Revenue Recognition

Disaggregation of revenues

Revenues associated with contracts with customers for crude oil, natural gas and natural gas liquids (“NGL”) sales were as follows for the three months ended March 31, 2019 and 2018:



Exploration and Production Revenues
	Three Months Ended March 31,
	2019		2018
	(In thousands)
Crude oil revenues	$	318,120	$	326,310
Purchased crude oil sales	147,136		67,660
Natural gas revenues	27,452		26,962
Purchased natural gas sales	1,335		49
NGL revenues	23,210		13,323
Total exploration and production revenues	$	517,253	$	434,304

Revenues associated with contracts with customers for midstream services under fee-based arrangements and midstream product sales from purchase arrangements were as follows for the three months ended March 31, 2019 and 2018:



Midstream Revenues⁽¹⁾
	Three Months Ended March 31,
	2019		2018
	(In thousands)
Midstream service revenues
Crude oil and natural gas revenues	$	24,664	$	18,029
Produced and flowback water revenues	9,033		8,876
Total midstream service revenues	$	33,697	$	26,905
Midstream product revenues
Natural gas and NGL revenues	$	12,797	$	—
Freshwater revenues	1,527		1,017
Total midstream product revenues	$	14,324	$	1,017
Total midstream revenues	$	48,021	$	27,922

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(1)	Represents midstream revenues, excluding all intercompany revenues for work performed by the midstream services business segment for the Company’s ownership interests that are eliminated in consolidation and are therefore not included in consolidated midstream services revenues.

Revenues associated with contracts with customers for well services were as follows for the three months ended March 31, 2019 and 2018:



Well Services Revenues⁽¹⁾
	Three Months Ended March 31,
	2019		2018
	(In thousands)
Hydraulic fracturing revenues	$	9,775	$	10,426
Equipment rental revenues	683		1,160
Total well services revenues	$	10,458	$	11,586

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(1)	Represents well services revenues, excluding all intercompany revenues for work performed by the well services business segment for the Company’s ownership interests that are eliminated in consolidation and are therefore not included in consolidated well services revenues.

Prior period performance obligations

For sales of commodities, the Company records revenue in the month production is delivered to the purchaser. However, settlement statements and payment may not be received for 30 to 90 days after the date production is delivered, and as a result, the Company is required to estimate the amount of production that was delivered to the purchaser and the price that will be received for the sale of the product. The Company records the differences between estimates and the actual amounts received for product sales once payment is received from the purchaser. Such differences have historically not been significant. The Company uses knowledge of its properties, its properties’ historical performance, spot market prices and other factors as the basis for these estimates. For the three months ended March 31, 2019 and 2018, revenue recognized related to performance obligations satisfied in prior reporting periods was not material.

Contract balances

Contract balances are the result of timing differences between revenue recognition, billings and cash collections. Contract liabilities are recorded for consideration received from customers related to temporary deficiency quantities under minimum volume commitments, which are expected to be made up in a future period. This consideration is subsequently recognized as revenue when the customer makes up the volumes or the deficiency makeup period expires. The Company does not recognize contract assets or contract liabilities under its customer contracts for which invoicing occurs once the Company’s performance obligations have been satisfied and payment is unconditional. No contract balances were recorded in the condensed consolidated financial statements at March 31, 2019 or December 31, 2018.

Remaining performance obligations

The following table presents estimated revenue allocated to remaining performance obligations for contracted revenues that are unsatisfied (or partially satisfied) as of March 31, 2019:



	(In thousands)
2019 (excluding the three months ended March 31, 2019)	$	20,430
2020	26,905
2021	25,656
2022	19,263
2023	12,642
Thereafter	14,642
Total	$	119,538

The partially and wholly unsatisfied performance obligations presented in the table above are generally limited to customer contracts which have fixed pricing and fixed volume terms and conditions, which generally include customer contracts with minimum volume commitment payment obligations.

The Company has elected practical expedients, pursuant to ASC 606, to exclude from the presentation of remaining performance obligations: (i) contracts with index-based pricing or variable volume attributes in which such variable consideration is allocated entirely to a wholly unsatisfied performance obligation or to a wholly unsatisfied promise to transfer a distinct service that forms part of a series of distinct services; (ii) contracts with an original expected duration of one year or less; and (iii) contracts for which the Company recognizes revenue under the right to invoice practical expedient.