Natural gas, liquefied or in the gaseous state

1. Scope and Applicability

This PCR covers extracted natural gas after declared separation and conditioning, supplied in one specified gaseous or liquefied state at a metered gate. Distinguish an integrated field/LNG route from a standalone processing or liquefaction site receiving burden-bearing raw gas. Include actual compression, acid-gas removal, dehydration, mercury removal, liquefaction and boil-off recovery only where operated. A separately declared regasification terminal includes vaporization and cold/heat exchanges through its gaseous delivery gate. Transmission or shipping is included only if inside the disclosed gate boundary. Offshore field production needs its own evidence; onshore guidance cannot establish offshore operations. ifc-onshore-2007, ifc-lng-2017

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.ores-and-minerals-electricity-gas-and-water.crude-petroleum-and-natural-gas.natural-gas-liquefied-or-in-the-gaseous-state
classification_refs	CPC 3.0:12020
covered_products	Fossil natural gas at a fixed gas or LNG gate and state
excluded_products	Manufactured coal gas; petroleum gas mixtures as separate products; standalone hydrogen; customer combustion; undisclosed transmission
representative_product	Natural gas at the declared gate
production_route	Field recovery and separation; Gas conditioning and compression; Liquefaction and tank-vapor control; Regasification and delivery; Product metering and dispatch
market_state	Metered processed gas or LNG at one declared supply gate

3. Reference Flow

Field	Value
What	Supply composition-qualified natural gas as feedstock or fuel, without claiming useful-heat equivalence
How much	1 kg
How well	field/site and year; starting state; gas or LNG phase; composition and water; pressure; temperature; density measurement; net calorific value and basis; gas recovery and own use; gate; transport scope; refrigerant composition; allocation; offshore scope; measured sulfur/mercury where relevant; gas-volume reference conditions and compressibility; terminal heating route; water intake and return
How long or cycle	One gate supply within a declared production period
reference_flow_link	final_product

Field	Value
Reference amount	1
Reference product flow	Natural gas at the declared gate
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	field/site and year; starting state; gas or LNG phase; composition and water; pressure; temperature; density measurement; net calorific value and basis; gas recovery and own use; gate; transport scope; refrigerant composition; allocation; offshore scope; measured sulfur/mercury where relevant; gas-volume reference conditions and compressibility; terminal heating route; water intake and return

Declare all qualifiers in dataset metadata or reference-flow comments. The representative identity is usable only for its confirmed product state, geography and property; resolve a distinct flow for incompatible variants. It does not impose a default product composition.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_basis	final_product	Mass	kg	D is the positive accepted net gate-output total in kg. Exclude packaging and cancelled internal transfers. cp_output records D; every card uses per 1 kg reference flow.
conversion	utility and material rows	Declared row property	kg; m3; MJ	Retain raw readings. Electricity: 1 kWh = 3.6 MJ. Mass/volume conversion requires measured density, temperature and applicable pressure; retain water content and active chemical fraction.
category_balance	production	Mass	kg	Reconcile resource/purchased feed, gas product, condensate, separated CO2, water, own-use combustion, flare, vents, stock change and measured shrinkage. Convert gas-volume meters to mass using matching measured composition, temperature, absolute pressure and compressibility; use measured LNG mass or density at loading conditions. Do not equate gas and LNG volumes. Recycled boil-off and fuel gas are internal observations, not additional product credits.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Reservoir gas for integrated production, or purchased raw/processed natural gas for a standalone site
starting_condition_role	Resource or supplied feed; declare which
product_classification_scope	Fossil natural gas at a fixed gas or LNG gate and state
recursive_input_rule	Purchased same-category material carries a distinct supplier dataset; internal recycling is a balance observation, not a new external input or credit.
upstream_dataset_requirement	Link feed, electricity, fuels, chemicals, infrastructure and waste-management burdens; disclose any missing coverage.
disclosure	field/site and year; starting state; gas or LNG phase; composition and water; pressure; temperature; density measurement; net calorific value and basis; gas recovery and own use; gate; transport scope; refrigerant composition; allocation; offshore scope; measured sulfur/mercury where relevant; gas-volume reference conditions and compressibility; terminal heating route; water intake and return

rule_id	Applies to	Rule	source_ids
boundary_operations	site	This PCR covers extracted natural gas after declared separation and conditioning, supplied in one specified gaseous or liquefied state at a metered gate. Distinguish an integrated field/LNG route from a standalone processing or liquefaction site receiving burden-bearing raw gas. Include actual compression, acid-gas removal, dehydration, mercury removal, liquefaction and boil-off recovery only where operated. A separately declared regasification terminal includes vaporization and cold/heat exchanges through its gaseous delivery gate. Transmission or shipping is included only if inside the disclosed gate boundary. Offshore field production needs its own evidence; onshore guidance cannot establish offshore operations.	ifc-onshore-2007, ifc-lng-2017
boundary_partition	all exchanges	Include actual conditioning, storage, handling and pollution controls through the declared gate. Account for attributable construction and closure with a disclosed lifetime-output basis or justified exclusion and sensitivity. Separate purchased fuel supply from foreground combustion and purchased treatment from site releases.
boundary_completeness	inventory	Cards define individual likely exchanges and route conditions, not an exhaustive site audit. Add each actual absent chemical, waste, resource, land transformation and pollutant as its own row. Absence, measured zero and unknown must be distinguished.

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
recovery	Field recovery and separation	conditional	Integrated primary field production	Foreground production	per 1 kg reference flow
conditioning	Gas conditioning and compression	conditional	Actual on-site conditioning/compression; standalone regasification excludes upstream processing	Foreground production	per 1 kg reference flow
liquefaction	Liquefaction and tank-vapor control	conditional	LNG route	Foreground production	per 1 kg reference flow
terminal	Regasification and delivery	conditional	Declared regasification terminal	Foreground production	per 1 kg reference flow
dispatch	Product metering and dispatch	required	All declared sites	Foreground production	per 1 kg reference flow

Process: Field recovery and separation (recovery)

Inputs

Product flows

Field diesel (field_diesel)

Only diesel-driven drilling, pumps or site equipment; attributable development includes lifetime output basis.

• Selected flow: Diesel fuel 9d258d75-6792-4f1c-9856-81602ed8f816
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_field_diesel; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_field_diesel
• Sources: ifc-onshore-2007, ifc-lng-2017

Elementary flows

Natural gas withdrawn from reservoir (gas_resource)

Integrated recovery only; measure extracted dry/wet gas before removal losses and retain composition.

• Selected flow: Natural gas withdrawn from reservoir
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_gas_resource; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_gas_resource
• Sources: ifc-onshore-2007, ifc-lng-2017

Outputs

Waste flows

Saline produced water transferred for treatment (produced_water)

Only treatment transfers; reinjection and final receiving-water discharges require separate site balances and species.

• Selected flow: Saline produced water transferred for treatment
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_produced_water; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_produced_water
• Sources: ifc-onshore-2007, ifc-lng-2017

Process: Gas conditioning and compression (conditioning)

Inputs

Product flows

Supplied raw natural gas (raw_gas_feed)

Standalone processing only; supplier dataset includes extraction and specified transport. Cancel integrated internal feed.

• Selected flow: Supplied raw natural gas
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_raw_gas_feed; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_raw_gas_feed
• Sources: ifc-onshore-2007, ifc-lng-2017

Processing electricity (site_power)

This purchased electricity exchange requires independently confirmed actual supplier, consumption or production interface, geography, voltage, generation attributes and energy property/unit; its UUID remains unresolved until a compatible direct-read identity is confirmed. A waste-incineration generation flow must not represent arbitrary site power.

Purchased utility for processing/compression; allocate shared meters once.

• Selected flow: Electricity
• Flow property / unit: Net calorific value / MJ
• Amount rule: Collect the attributable reporting-period quantity under cp_site_power; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_site_power
• Sources: ifc-onshore-2007, ifc-lng-2017

Monoethanolamine solvent make-up (mea_makeup)

Only an actual MEA acid-gas removal unit; other solvents require their own cards and purity records.

• Selected flow: Monoethanolamine solvent make-up
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_mea_makeup; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_mea_makeup
• Sources: ifc-onshore-2007, ifc-lng-2017

Triethylene-glycol make-up (teg_makeup)

Only TEG dehydration; circulating solvent is not repeated fresh supply.

• Selected flow: Triethylene-glycol make-up
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_teg_makeup; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_teg_makeup
• Sources: ifc-onshore-2007, ifc-lng-2017

Imported process steam (imported_steam)

Only purchased steam for actual solvent regeneration; record delivered enthalpy and condensate-return condition. On-site generation needs its fuel and combustion inventory.

• Selected flow: Imported process steam
• Flow property / unit: Energy / MJ
• Amount rule: Collect the attributable reporting-period quantity under cp_imported_steam; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_imported_steam
• Sources: ifc-onshore-2007, ifc-lng-2017

Outputs

Product flows

Stabilized natural-gas condensate (condensate)

Only an exported saleable co-product; measure its own mass and allocation.

• Selected flow: Stabilized natural-gas condensate
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_condensate; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_condensate
• Sources: ifc-onshore-2007, ifc-lng-2017

Waste flows

Spent mercury-removal sorbent (spent_mercury_sorbent)

Only an actual mercury-removal system; record mercury content and management fate.

• Selected flow: Spent mercury-removal sorbent
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_spent_mercury_sorbent; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_spent_mercury_sorbent
• Sources: ifc-onshore-2007, ifc-lng-2017

Elementary flows

Fossil methane to outdoor air (methane_air)

Include direct leaks and vented methane after recovery; flare conversion is separately measured, not assumed complete.

• Selected flow: methane (fossil) 08a91e70-3ddc-11dd-9610-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_methane_air; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_methane_air
• Sources: ifc-onshore-2007, ifc-lng-2017

Fossil carbon dioxide to outdoor air (co2_air)

Separate removed reservoir CO2 from on-site combustion and flare CO2 in collection records; exclude captured/exported CO2.

• Selected flow: carbon dioxide (fossil) 08a91e70-3ddc-11dd-923d-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_co2_air; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_co2_air
• Sources: ifc-onshore-2007, ifc-lng-2017

Process: Liquefaction and tank-vapor control (liquefaction)

Inputs

Product flows

Liquefaction electricity (lng_power)

This purchased electricity exchange requires independently confirmed actual supplier, consumption or production interface, geography, voltage, generation attributes and energy property/unit; its UUID remains unresolved until a compatible direct-read identity is confirmed. A waste-incineration generation flow must not represent arbitrary site power.

Only electrically driven refrigeration; exclude processing-power duplication and internal recovered power.

• Selected flow: Electricity
• Flow property / unit: Net calorific value / MJ
• Amount rule: Collect the attributable reporting-period quantity under cp_lng_power; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_lng_power
• Sources: ifc-onshore-2007, ifc-lng-2017

Refrigerant propane make-up (propane_makeup)

Only actual propane-loop make-up; each other mixed-refrigerant component requires a distinct card.

• Selected flow: Refrigerant propane make-up
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_propane_makeup; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_propane_makeup
• Sources: ifc-onshore-2007, ifc-lng-2017

Supplied cooling make-up water (cooling_water)

Only purchased fresh make-up; circulating water is an internal balance. Direct withdrawal requires its own resource card and basin.

• Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_cooling_water; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_cooling_water
• Sources: ifc-onshore-2007, ifc-lng-2017

Outputs

Elementary flows

Propane to outdoor air (propane_air)

Only direct unrecovered propane leakage; do not represent the entire mixture by methane.

• Selected flow: Propane to outdoor air
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_propane_air; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_propane_air
• Sources: ifc-onshore-2007, ifc-lng-2017

Process: Regasification and delivery (terminal)

Inputs

Product flows

Regasification electricity (regas_power)

This purchased electricity exchange requires independently confirmed actual supplier, consumption or production interface, geography, voltage, generation attributes and energy property/unit; its UUID remains unresolved until a compatible direct-read identity is confirmed. A waste-incineration generation flow must not represent arbitrary site power.

Declared terminal pumps and vaporizer auxiliaries only.

• Selected flow: Electricity
• Flow property / unit: Net calorific value / MJ
• Amount rule: Collect the attributable reporting-period quantity under cp_regas_power; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_regas_power
• Sources: ifc-onshore-2007, ifc-lng-2017

Imported regasification heat (imported_heat)

Only purchased heat; direct-fired vaporizer fuel and combustion require separate actual rows instead.

• Selected flow: Imported regasification heat
• Flow property / unit: Energy / MJ
• Amount rule: Collect the attributable reporting-period quantity under cp_imported_heat; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_imported_heat
• Sources: ifc-onshore-2007, ifc-lng-2017

Supplied LNG for regasification (terminal_lng_feed)

Only a standalone receiving terminal; supplier inventory covers upstream production, liquefaction and disclosed shipping. Cancel this internal transfer for an integrated chain.

• Selected flow: Supplied LNG for regasification
• Flow property / unit: Mass / kg
• Amount rule: Collect the attributable reporting-period quantity under cp_terminal_lng_feed; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_terminal_lng_feed
• Sources: ifc-onshore-2007, ifc-lng-2017

Elementary flows

Seawater withdrawal for open-rack vaporization (vaporizer_seawater)

Only an actual seawater-heated vaporizer; measure intake and returned water, temperatures and any biocide separately.

• Selected flow: Seawater withdrawal for open-rack vaporization
• Flow property / unit: Volume / m3
• Amount rule: Collect the attributable reporting-period quantity under cp_vaporizer_seawater; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_vaporizer_seawater
• Sources: ifc-onshore-2007, ifc-lng-2017

Outputs

Elementary flows

Seawater returned to the same marine receiving water (returned_seawater)

Only returned cooling water; intake minus measured return is not automatically all water consumption. Record changed temperature and each discharged pollutant as separate exchanges.

• Selected flow: Seawater returned to the same marine receiving water
• Flow property / unit: Volume / m3
• Amount rule: Collect the attributable reporting-period quantity under cp_returned_seawater; divide by D after stock, transfer and allocation reconciliation.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_returned_seawater
• Sources: ifc-onshore-2007, ifc-lng-2017

Process: Product metering and dispatch (dispatch)

Outputs

Product flows

Natural gas at the declared gate (final_product)

Fix one phase and actual product composition; net mass excludes separated liquids and internally burned or flared gas.

• Selected flow: Natural gas at the declared gate
• Flow property / unit: Mass / kg
• Amount rule: 1 kg
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_output
• Sources: ifc-onshore-2007, ifc-lng-2017

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_hierarchy	joint production	Prefer process subdivision or defensible system expansion; otherwise use demonstrated physical causality. Use economic allocation only with consistent period, price, currency and sensitivity when physical causality is unavailable. Retain the unallocated inventory.	ef-allocation-2021
allocation_product	reference and co-products	Separate extraction, processing, liquefaction and terminal meters before assigning joint oil/gas/NGL burdens. Condensate is a distinct actual co-product with measured mass and composition. Own-use gas and recovered boil-off reduce net available supply but receive no avoided-fuel credit.
allocation_waste	waste and recycling	Classify each output by physical state and actual fate. A sale does not automatically make a residue a co-product; internal recycling receives no avoided-product credit. Apply treatment burdens once.

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_gas_resource	recovery	gas_resource	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Measure the net matched-period gas mass by calibrated mass meter or composition-qualified gas volume with measured temperature, absolute pressure and compressibility. LNG uses loading mass or measured density at loading temperature. Reconcile stocks, separated liquids and internal transfers; retain conversion equations and uncertainty. cp_output independently records positive accepted gate mass D.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_field_diesel	recovery	field_diesel	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_produced_water	recovery	produced_water	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_raw_gas_feed	conditioning	raw_gas_feed	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Measure the net matched-period gas mass by calibrated mass meter or composition-qualified gas volume with measured temperature, absolute pressure and compressibility. LNG uses loading mass or measured density at loading temperature. Reconcile stocks, separated liquids and internal transfers; retain conversion equations and uncertainty. cp_output independently records positive accepted gate mass D.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_site_power	conditioning	site_power	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	MJ	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_mea_makeup	conditioning	mea_makeup	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_teg_makeup	conditioning	teg_makeup	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_condensate	conditioning	condensate	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_spent_mercury_sorbent	conditioning	spent_mercury_sorbent	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_methane_air	conditioning	methane_air	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Integrate calibrated gas flow and measured species concentration over operating duration, with temperature/pressure and compartment. If modelling is necessary, retain source-specific measured activity, carbon/species balance, factor provenance and uncertainty. No generic factor assumed.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_co2_air	conditioning	co2_air	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Integrate calibrated gas flow and measured species concentration over operating duration, with temperature/pressure and compartment. If modelling is necessary, retain source-specific measured activity, carbon/species balance, factor provenance and uncertainty. No generic factor assumed.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_lng_power	liquefaction	lng_power	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	MJ	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_propane_makeup	liquefaction	propane_makeup	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_propane_air	liquefaction	propane_air	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Integrate calibrated gas flow and measured species concentration over operating duration, with temperature/pressure and compartment. If modelling is necessary, retain source-specific measured activity, carbon/species balance, factor provenance and uncertainty. No generic factor assumed.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_regas_power	terminal	regas_power	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	MJ	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_imported_heat	terminal	imported_heat	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	MJ	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_output	dispatch	final_product	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Measure the net matched-period gas mass by calibrated mass meter or composition-qualified gas volume with measured temperature, absolute pressure and compressibility. LNG uses loading mass or measured density at loading temperature. Reconcile stocks, separated liquids and internal transfers; retain conversion equations and uncertainty. cp_output independently records positive accepted gate mass D.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_terminal_lng_feed	terminal	terminal_lng_feed	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Measure the net matched-period gas mass by calibrated mass meter or composition-qualified gas volume with measured temperature, absolute pressure and compressibility. LNG uses loading mass or measured density at loading temperature. Reconcile stocks, separated liquids and internal transfers; retain conversion equations and uncertainty. cp_output independently records positive accepted gate mass D.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_cooling_water	liquefaction	cooling_water	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	kg	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_imported_steam	conditioning	imported_steam	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	MJ	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_vaporizer_seawater	terminal	vaporizer_seawater	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	m3	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty
cp_returned_seawater	terminal	returned_seawater	measurement_record	period; site; amount; original unit; uncertainty; stock changes; route condition; allocation; D; product qualifiers	Calibrated weighing, metering or traceable transfer records; reconcile period, opening/closing stock, actual grade and boundary.	m3	Each meter interval or shipment; monthly reconciliation	Complete year or justified representative production campaign	Metered processed gas or LNG at one declared supply gate	per 1 kg reference flow	Calibration; original records; assay; balance residuals; uncertainty

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
normalization	all cards	Exchange = attributable period quantity / D. Reconcile inventories and cancel internal transfers before aggregation.	cp_output; row-specific cp records	per 1 kg reference flow
physical_balance	production	Reconcile resource/purchased feed, gas product, condensate, separated CO2, water, own-use combustion, flare, vents, stock change and measured shrinkage. Convert gas-volume meters to mass using matching measured composition, temperature, absolute pressure and compressibility; use measured LNG mass or density at loading conditions. Do not equate gas and LNG volumes. Recycled boil-off and fuel gas are internal observations, not additional product credits.	Matched mass, volume, composition and stock measurements	Balance residual and uncertainty

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
representativeness	dataset	Use matching production and exchange periods, actual technology, geography and supplier state. Record startup, shutdown, seasonal variation and substitutions.	collection records
identity_and_ranges	all cards	Unresolved identities and missing independent range evidence remain explicit. Do not replace measurement by a guessed industry range or by missing-as-zero.	manifest review metadata

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_reference	final_product	Verify 1 kg, positive D, product state, property/unit and every required qualifier. Each dataset fixes one product and route.
validate_balance	site	Reconcile resource/purchased feed, gas product, condensate, separated CO2, water, own-use combustion, flare, vents, stock change and measured shrinkage. Convert gas-volume meters to mass using matching measured composition, temperature, absolute pressure and compressibility; use measured LNG mass or density at loading conditions. Do not equate gas and LNG volumes. Recycled boil-off and fuel gas are internal observations, not additional product credits.
validate_coverage	handoff	Verify each applicable exchange, its provider or environmental compartment and final waste fate; identify skipped checks, unresolved identities, missing measurements and upstream gaps. Errors or unassessed mandatory coverage cannot be labelled complete.

10. Published Dataset Profile

Field	Value
dataset_role	foreground_dataset
downstream_use	secondary_dataset; background_dataset
allowed_use	Supply composition-qualified natural gas as feedstock or fuel, without claiming useful-heat equivalence
excluded_use	Manufactured coal gas; petroleum gas mixtures as separate products; standalone hydrogen; customer combustion; undisclosed transmission
required_metadata	field/site and year; starting state; gas or LNG phase; composition and water; pressure; temperature; density measurement; net calorific value and basis; gas recovery and own use; gate; transport scope; refrigerant composition; allocation; offshore scope; measured sulfur/mercury where relevant; gas-volume reference conditions and compressibility; terminal heating route; water intake and return
required_quality_disclosure	Identity and measurement gaps; boundary coverage; uncertainty; allocation; temporal and geographical representativeness
update_trigger	Changed product, route, yield, supply, waste fate, site or representative period

11. Data Sources

Source id	Type	Reference	Used for
ifc-onshore-2007	official_guidance	IFC, Environmental Health and Safety Guidelines for Onshore Oil and Gas Development, 30 April 2007, air and produced-water sections and Annex A, p.27. https://www.ifc.org/content/dam/ifc/doc/2000/2007-onshore-oil-gas-development-ehs-guidelines-en.pdf	Formation-fluid separation, gas impurity removal, direct air sources and produced-water management; onshore scope only.
ifc-lng-2017	official_guidance	IFC, Environmental Health and Safety Guidelines for Liquefied Natural Gas Facilities, 11 April 2017, Annex A pp.21–22 and air-emissions section. https://www.ifc.org/content/dam/ifc/doc/mgrt/20170406-final-lng-ehs-guideline-april-2017.pdf	Pretreatment, liquefaction, refrigerant systems and boil-off handling; no default consumption range.
cpc3-notes-2025	official_guidance	UNSD, CPC Version 3.0 Explanatory Notes, 30 June 2025. https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Exp_Notes_30Jun2025.pdf	Classification scope only; no process quantities.
ef-allocation-2021	official_guidance	Commission Recommendation (EU) 2021/2279, Annex I section 4.5, consolidated 30 December 2021. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02021H2279-20211230	Multifunctionality hierarchy; not a claim of complete PEF conformity.