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Risk Management Activities (Tables) | 3 Months Ended
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Mar. 31, 2020
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value | The following table sets forth the amounts and classification of EOG's outstanding financial derivative instruments at March 31, 2020 and December 31, 2019. Certain amounts may be presented on a net basis on the Condensed Consolidated Financial Statements when such amounts are with the same counterparty and subject to a master netting arrangement (in thousands):
|  |  |  | Fair Value at
Description |  | Location on Balance Sheet |  | March 31, 2020 |  | December 31, 2019
Asset Derivatives |  |  |  |  |  |
Crude oil, NGLs and natural gas derivative contracts - |  |  |  |  |  |
Current portion |  | Assets from Price Risk Management Activities (1) |  | $ | 932,928 |  |  | $ | 1,299 |
Liability Derivatives |  |  |  |  |  |
Crude oil, NGLs and natural gas derivative contracts - |  |  |  |  |  |
Current portion |  | Liabilities from Price Risk Management Activities (2) |  | $ | — |  |  | $ | 20,194 |
(1) | The current portion of Assets from Price Risk Management Activities consists of gross assets of $941 million, partially offset by gross liabilities of $8 million at March 31, 2020. The current portion of Assets from Price Risk Management Activities consists of gross assets of $3 million, partially offset by gross liabilities of $2 million, at December 31, 2019.
(2) The current portion of Liabilities from Price Risk Management Activities consists of gross liabilities of $23 million, partially offset by gross assets of $3 million, at December 31, 2019.
Crude Oil | ICE Brent Differential Basis Swap [Member] |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Prices received by EOG for its crude oil production generally vary from U.S. New York Mercantile Exchange (NYMEX) West Texas Intermediate (WTI) prices due to adjustments for delivery location (basis) and other factors. EOG has entered into crude oil basis swap contracts in order to fix the differential between Intercontinental Exchange (ICE) Brent pricing and pricing in Cushing, Oklahoma (ICE Brent Differential). Presented below is a comprehensive summary of EOG's ICE Brent Differential basis swap contracts as of March 31, 2020. The weighted average price differential expressed in dollars per barrel ($/Bbl) represents the amount of addition to Cushing, Oklahoma, prices for the notional volumes expressed in barrels per day (Bbld) covered by the basis swap contracts.
| ICE Brent Differential Basis Swap Contracts
|  |  | Volume (Bbld) |  | Weighted Average Price Differential ($/Bbl)
| 2020 |  |  |  |
| May 2020 |  | 10,000 |  |  | $ | 4.92 |
Crude Oil | Price Swaps |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Presented below is a comprehensive summary of EOG's crude oil NYMEX WTI price swap contracts as of March 31, 2020, with notional volumes expressed in Bbld and prices expressed in $/Bbl.
| Crude Oil NYMEX WTI Price Swap Contracts
|  |  | Volume (Bbld) |  | Weighted Average Price ($/Bbl)
| 2020 |  |  |  |
| January 1, 2020 through March 31, 2020 (closed) |  | 200,000 |  |  | $ | 59.33 |
| April 1, 2020 through June 30, 2020 |  | 265,000 |  |  | 51.36 |
| July 2020 |  | 207,000 |  |  | 44.94 |
| August 1, 2020 through September 30, 2020 |  | 107,000 |  |  | 58.94 |
Crude Oil | Houston Differential Basis Swap [Member] |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | EOG has also entered into crude oil basis swap contracts in order to fix the differential between pricing in Houston, Texas, and Cushing, Oklahoma (Houston Differential). Presented below is a comprehensive summary of EOG's Houston Differential basis swap contracts as of March 31, 2020. The weighted average price differential expressed in $/Bbl represents the amount of addition to Cushing, Oklahoma, prices for the notional volumes expressed in Bbld covered by the basis swap contracts.
| Houston Differential Basis Swap Contracts
|  |  | Volume (Bbld) |  | Weighted Average Price Differential ($/Bbl)
| 2020 |  |  |  |
| May 2020 |  | 10,000 |  |  | $ | 1.55 |
Crude Oil | Roll Differential Swap |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | EOG has also entered into crude oil swaps to fix the differential in pricing between the NYMEX calendar month average and the physical crude oil delivery month (Roll Differential). Presented below is a comprehensive summary of EOG's Roll Differential swap contracts as of March 31, 2020. The weighted average price differential expressed in $/Bbl represents the amount of net addition (reduction) to delivery month prices for the notional volumes expressed in Bbld covered by the swap contracts.
| Roll Differential Swap Contracts
|  |  | Volume (Bbld) |  | Weighted Average Price Differential ($/Bbl)
| 2020 |  |  |  |
| February 1, 2020 through April 30, 2020 (closed) |  | 10,000 |  |  | $ | 0.70 |
| May 1, 2020 through December 31, 2020 |  | 10,000 |  |  | 0.70 |
Natural Gas | Rockies Differential Basis Swap |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Prices received by EOG for its natural gas production generally vary from NYMEX Henry Hub prices due to adjustments for delivery location (basis) and other factors. EOG has entered into natural gas basis swap contracts in order to fix the differential between pricing in the Rocky Mountain area and NYMEX Henry Hub prices (Rockies Differential). Presented below is a comprehensive summary of EOG's Rockies Differential basis swap contracts as of March 31, 2020. The weighted average price differential expressed in $/MMBtu represents the amount of reduction to NYMEX Henry Hub prices for the notional volumes expressed in MMBtud covered by the basis swap contracts.
| Rockies Differential Basis Swap Contracts
|  |  | Volume (MMBtud) |  | Weighted Average Price Differential ($/MMBtu)
| 2020 |  |  |  |
| January 1, 2020 through March 31 2020 (closed) |  | 30,000 |  |  | $ | 0.55 |
| April 1, 2020 through December 31, 2020 |  | 30,000 |  |  | 0.55 |
Natural Gas | Collars |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | EOG has entered into natural gas collar contracts, which establish ceiling and floor prices for the sale of notional volumes of natural gas as specified in the collar contracts. The collars require that EOG pay the difference between the ceiling price and the NYMEX Henry Hub natural gas price for the contract month (Henry Hub Index Price) in the event the Henry Hub Index Price is above the ceiling price. The collars grant EOG the right to receive the difference between the floor price and the Henry Hub Index Price in the event the Henry Hub Index Price is below the floor price. On March 24, 2020, EOG executed the early termination provision granting EOG the right to terminate certain 2020 natural gas collar contracts with notional volumes of 250,000 million British thermal units (MMBtu) per day (MMBtud) at a weighted average ceiling price of $2.50 per MMBtu and a weighted average floor price of $2.00 per MMBtu for the period April 1, 2020 through July 31, 2020. The net cash EOG received for settling these contracts was $7.8 million. Presented below is a comprehensive summary of EOG's natural gas collar contracts as of March 31, 2020, with notional volumes expressed in MMBtud and prices expressed in dollars per MMBtu ($/MMBtu).
| Natural Gas Collar Contracts
|  |  |  |  | Weighted Average Price ($/MMBtu)
|  |  | Volume (MMBtud) |  | Ceiling Price |  | Floor Price
| 2020 |  |  |  |  |  |
| April 1, 2020 through July 31, 2020 (closed) |  | 250,000 |  |  | $ | 2.50 |  |  | $ | 2.00 |
| August 1, 2020 through October 31, 2020 |  | 250,000 |  |  | 2.50 |  |  | 2.00 |
Natural Gas | HSC Differential Basis Swaps [Member] |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | EOG has also entered into natural gas basis swap contracts in order to fix the differential between pricing at the Houston Ship Channel (HSC) and NYMEX Henry Hub prices (HSC Differential). On March 27, 2020, EOG executed the early termination provision granting EOG the right to terminate certain 2020 HSC Differential basis swaps with notional volumes of 60,000 MMBtud at a weighted average price differential of $0.05 per MMBtu for the period April 1, 2020 through December 31, 2020. The net cash EOG paid for settling these contracts was $0.4 million. Presented below is a comprehensive summary of EOG's HSC Differential basis swap contracts as of March 31, 2020. The weighted average price differential expressed in $/MMBtu represents the amount of reduction to NYMEX Henry Hub prices for the notional volumes expressed in MMBtud covered by the basis swap contracts.
| HSC Differential Basis Swap Contracts
|  |  | Volume (MMBtud) |  | Weighted Average Price Differential ($/MMBtu)
| 2020 |  |  |  |
| January 1, 2020 through December 31, 2020 (closed) |  | 60,000 |  |  | $ | 0.05 |
Natural Gas | Waha Differential Basis Swaps [Member] |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | EOG has also entered into natural gas basis swap contracts in order to fix the differential between pricing at the Waha Hub in West Texas and NYMEX Henry Hub prices (Waha Differential). Presented below is a comprehensive summary of EOG's Waha Differential basis swap contracts as of March 31, 2020. The weighted average price differential expressed in $/MMBtu represents the amount of reduction to NYMEX Henry Hub prices for the notional volumes expressed in MMBtud covered by the basis swap contracts.
| Waha Differential Basis Swap Contracts
|  |  | Volume (MMBtud) |  | Weighted Average Price Differential ($/MMBtu)
| 2020 |  |  |  |
| January 1, 2020 through March 31, 2020 (closed) |  | 50,000 |  |  | $ | 1.40 |
| April 1, 2020 through December 31, 2020 |  | 50,000 |  |  | 1.40 |
Natural Gas Liquids | Price Swaps |
Derivatives, Fair Value [Line Items] |
Schedule of Derivative Instruments | Presented below is a comprehensive summary of EOG's Mont Belvieu propane (non-TET) financial price swap contracts (Mont Belvieu Propane Price Swap Contracts) as of March 31, 2020, with notional volumes expressed in Bbld and prices expressed in $/Bbl.
| Mont Belvieu Propane Price Swap Contracts
|  |  | Volume (Bbld) |  | Weighted Average Price ($/Bbl)
| 2020 |  |  |  |
| January 1, 2020 through February 29, 2020 (closed) |  | 4,000 |  |  | $ | 21.34 |
| March 2020 (closed) |  | 25,000 |  |  | 17.92 |
| April 1, 2020 through December 31, 2020 |  | 25,000 |  |  | 17.92 |

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