Exhibit 99.1

NEWS RELEASE

C&J Energy Services Announces Second Quarter 2015 Results

HAMILTON, BERMUDA August 5, 2015 – C&J Energy Services Ltd. (NYSE: CJES) today reported net loss of ($65.1 million), or ($0.56) per diluted share, on revenue of $511.2 million for the second quarter of 2015, and Adjusted Net Loss⁽¹⁾ of ($53.8 million), or ($0.46) per diluted share⁽¹⁾. Adjusted Net Loss excludes a $5.4 million, or $0.05 per diluted share, after-tax charge related to costs associated with the March 2015 combination (the “Transaction”) of C&J Energy Services, Inc. (“Legacy C&J”) with the completion and production services business (the “C&P Business”) of Nabors Industries Ltd.; as well as severance costs of $1.2 million, or $0.01 per diluted share; customer settlement/bad debt write-off charges of $2.9 million, or $0.02 per diluted share; and an inventory write-down of $1.8 million, or $0.02 per diluted share. Adjusted EBITDA⁽¹⁾ was $20.3 million for the second quarter of 2015.

Our 2015 second quarter results compare with net loss of ($30.7 million), or ($0.51) per diluted share, on revenue of $401.2 million for the first quarter of 2015, and Adjusted Net Loss⁽¹⁾ of ($7.3 million), or ($0.12) per diluted share⁽¹⁾, after excluding a $23.3 million, or $0.39 per diluted share, after-tax charge related to costs associated with the Transaction. For the second quarter of 2014, net income was $11.1 million, or $0.20 per diluted share, on revenue of $367.9 million, and Adjusted Net Income⁽¹⁾ was $15.7 million, or $0.28 per diluted share⁽¹⁾, after excluding a $4.6 million, or $0.08 per diluted share, after-tax charge related to costs associated primarily with the Transaction. Adjusted EBITDA⁽¹⁾ was $31.8 million for the first quarter of 2015 and $52.8 million for the second quarter of 2014. On a pro forma basis⁽²⁾, our first quarter 2015 results include a net loss of ($55.3 million), or ($0.47) per diluted share, on revenue of $766.6 million with Adjusted EBITDA of $36.7 million, and Adjusted Net Loss⁽¹⁾ of ($43.4 million), or ($0.37) per diluted share⁽¹⁾, after excluding an $11.9 million, or $0.10 per diluted

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share, after-tax charge related to severance and other out-of-period costs. Unless otherwise indicated, results for the first quarter of 2015 include the financial and operating results of Legacy C&J for the entire period and the C&P Business for the eight-day period following the closing of the Transaction through March 31, 2015, and results for periods prior to the first quarter of 2015 reflect the financial and operating results of Legacy C&J exclusively.

Founder, Chairman and Chief Executive Officer Josh Comstock commented, “The second quarter marked our first full quarter as an operationally integrated company following the March 24th combination of C&J with Nabors Industries’ completion and production services business. I am proud of how we managed our business and advanced our integration initiatives despite the persistently difficult market environment. We successfully fought through the headwinds facing all of us in the oil and gas industry, and did so with the additional challenge of integrating an organization several times larger than Legacy C&J with diverse service lines. We achieved an immediate and relatively seamless integration of our operations, implementing C&J’s operating philosophy and high efficiency culture across our expanded operations without a loss in service quality or efficiency. We have also made significant progress toward integrating our corporate and administrative structures. Our goal is to be fully integrated and to have completed the transition services with Nabors by August 31, 2015, which we believe is an incredible accomplishment in only five months. These achievements are a testament to the strength of our management team and further prove our ability to successfully integrate as we grow through acquisitions, big or small.

“Second quarter results suffered from continued weakness in demand for our services, with reductions in customer budgets and drilling and completion activity driving severe utilization declines and pricing pressure. Activity levels across our operations dropped in March and then fell further in April, remaining depressed throughout the second quarter. We executed well in a tough market by pursuing utilization through the strategic deployment of equipment and crews while working with customers on pricing and implementing wide-spread cost reductions. Despite lower pricing and its deteriorating impact on revenue, through operational efficiency and aggressive cost management, enhanced by increasing synergy realizations, we limited the severity of the impact on margins.

“In response to market conditions, and also as part of our integration plan, late in the first quarter we began to scale back our operations and align our cost structure with activity levels. We stacked idle equipment, reduced headcount, implemented strict cost control measures and negotiated substantial price reductions with suppliers to lower our operating costs. Following closing of the Transaction, we doubled-down on our efforts to streamline our combined company and further improve our cost structure, determined to optimize synergies at an accelerated pace. Among other measures to control expenses and drive cost savings, the elimination of duplicative personnel and facilities and right-sizing of our business has also provided SG&A synergy savings. We have also achieved significant procurement synergy savings from applying the better pricing on key consumables, such as proppant, trucking and chemicals, that we obtained earlier in the year to our expanded Completion Services operations. We are continuing to work through our supply chain for additional opportunities to reduce input costs, leveraging our greater scale. Additionally, several of our research and technology initiatives are driving cost savings and also helping to generate revenue, which is central to our overall strategy of proactively managing our costs to maximize our returns.

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“While the market remains difficult and the duration of this downturn remains uncertain, we are confident in our ability to successfully manage through this cycle, and we are maintaining a long-term perspective. The actions we have taken to manage what we can control are working, and we will make adjustments as necessary to effectively respond to the market. We will continue to focus on managing our costs, protecting market share and positioning C&J to maximize the benefits and synergy potential of our greater scale both in this environment and as the market improves.”

Results for the Three Months Ended June 30, 2015

Completion Services

Second quarter 2015 revenue from our Completion Services segment was $332.5 million, with Adjusted EBITDA⁽¹⁾ of $24.5 million, compared to revenue of $371.0 million and Adjusted EBITDA⁽¹⁾ of $49.8 million for the first quarter of 2015, and revenue of $362.4 million and Adjusted EBITDA⁽¹⁾ of $78.2 million for the second quarter of 2014. On a pro forma basis⁽²⁾, first quarter 2015 revenue was $546.7 million, with Adjusted EBITDA⁽¹⁾ of $31.9 million.

Revenue decreased quarter over quarter due to significantly lower utilization and pricing levels across our service lines resulting from the extremely competitive market environment caused by the continued decline in U.S. onshore drilling and completion activity. Revenue from our hydraulic fracturing services was also negatively impacted by certain highly active customers electing to provide their own sand, and also chemicals in some cases, during the quarter, although we do not believe this is indicative of an industry trend.

Activity fell in March, followed by a subsequent severe drop in April, with continued weakness throughout the second quarter, accompanied by persistent pricing pressure. To support utilization and protect market share, substantial pricing concessions were necessary in all of our service lines, particularly in our hydraulic fracturing operations. The pressure pumping market continues to experience the most intense competition, and we have encountered varying degrees of irrational efforts by certain of our competitors who are willing to work at a loss to maintain utilization. We have maintained a long-term perspective and stayed true to our value-driven operating philosophy, electing to stack equipment where pricing was unsustainable and supporting utilization of deployed assets by focusing on the quality and efficiency of our service execution while collaborating with our customers on pricing.

In response to deteriorating conditions, we worked with our supply chain to adjust costs to reflect current market conditions, implemented aggressive cost control measures and aligned our assets with industry demand. The increasing effects of reductions in input costs that we obtained earlier in the year facilitated our ability to work with our customers on pricing. Our efforts to improve our cost structure and streamline our business were augmented by our greater scale and the rapid implementation of our integration program, which delivered consolidation and restructuring opportunities and increasing synergy savings. We also benefitted from the growing effects of cost savings attributable to our research and technology initiatives.

Moving into the third quarter, our Completion Services segment continues to face significant challenges. As commodity prices have remained weak and recently dipped, we have seen some customers pause to re-evaluate their activity levels. We are keeping a sharp focus on managing our operations and controlling costs, including

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reducing resources where the market is not sustainable, repositioning assets where activity and pricing are strongest and ensuring a strategic presence in key operating areas to protect market share and establish a competitive position to capitalize on viable opportunities. We believe our greater scale combined with our research and technology initiatives provide us with a platform to further improve our cost structure and increase efficiency, which gives us a unique ability to defend and capture market share across all of our Completion Services division.

Well Support Services

Second quarter 2015 revenue from our Well Support Services segment was $153.1 million with Adjusted EBITDA⁽¹⁾ of $22.2 million. These results were delivered by the C&P Business’ well servicing operations, which contributed $16.1 million of revenue and $4.3 million of Adjusted EBITDA for the first quarter of 2015 during the eight-day period following the closing of the Transaction through March 31, 2015. On a pro forma basis⁽²⁾, first quarter 2015 revenue was $188.2 million, with Adjusted EBITDA⁽¹⁾ of $23.2 million.

As with our Completion Services segment, results from our Well Support Services segment were negatively impacted by lower utilization and pricing to varying degrees across all services lines and operating markets. We supported utilization and protected market share through pricing concessions, while repositioning resources in line with market conditions and customer demand. Immediately following the March 2015 acquisition of this business, we focused on restructuring the organization to maximize utilization, lower input costs and optimize operational efficiencies, including through organizational upgrades and adjustments in headcount, facilities and asset base. The steps we have taken are already benefitting our Well Support Services segment and we are continuing to pursue operational improvement to ensure that we are performing at the highest level both in this environment and when the market recovers.

Market conditions have remained depressed entering the third quarter. Our customers continue to focus on lowering their costs due to the continued weakness in commodity prices, and we will continue to work with them to sustain utilization and capitalize on strategic opportunities.

Other Services

Our Other Services segment includes Legacy C&J’s smaller service lines and divisions, including directional drilling, equipment manufacturing and repair, specialty chemicals sales and research and technology, as well as the C&P Business’ cementing operations. In addition, the Other Services segment includes costs associated with general corporate activities and intersegment eliminations.

Second quarter 2015 revenue from our Other Services segment was $25.6 million with Adjusted EBITDA⁽¹⁾ of ($26.3 million), compared to $14.1 million of revenue with Adjusted EBITDA⁽¹⁾ of ($22.3 million) for the first quarter of 2015, and $5.5 million of revenue with Adjusted EBITDA⁽¹⁾ of ($25.4 million) for the second quarter of 2014. The first quarter 2015 results included the C&P Business’ cementing operations for the eight-day period following the closing of the Transaction through March 31, 2015. On a pro forma basis⁽²⁾, first quarter 2015 revenue from our Other Services segment was $31.7 million with Adjusted EBITDA⁽¹⁾ of ($18.5 million).

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Other Financial Information

Our selling, general and administrative expense (“SG&A”) for the second quarter of 2015 was $55.5 million, compared to $39.2 million for the first quarter of 2015 and $39.5 million for the second quarter of 2014, in each instance exclusive of costs associated primarily with the Transaction and severance cost. On a pro forma basis⁽²⁾, and exclusive of severance and other employee-related costs, SG&A for the first quarter of 2015 was $62.2 million. The decrease in SG&A for the second quarter of 2015 compared to pro forma SG&A for the first quarter of 2015 was driven by the implementation of our integration program and cost control initiatives, including reductions in headcount and facilities.

We incurred $4.3 million in research and development expense (“R&D”) for the second quarter of 2015, compared to $4.1 million for the first quarter of 2015 and $3.6 million for the second quarter of 2014. Several of our research and technology initiatives are generating cost savings, which provides a meaningful advantage in this highly competitive environment. Even as we seek to reduce costs, we remain committed to investing in technologies that lower our cost base for key inputs, enhance synergy savings and improve our operational capabilities and efficiencies.

Depreciation and amortization expense (“D&A”) in the second quarter of 2015 was $81.5 million, compared to $37.4 million for the first quarter of 2015. D&A was $25.4 million in the second quarter of 2014.

Liquidity

As of June 30, 2015, we had $94.0 million in borrowings outstanding under our revolving credit facility, along with $12.6 million of outstanding letters of credit, leaving $493.4 million available for additional borrowing. We also had $1.06 billion outstanding under a term loan B facility, comprised of a $573.6 million term loan B-1 and a $483.8 million term loan B-2. We financed the cash portion of the Transaction and repaid our previously outstanding revolver debt with the term loan B facility and borrowings under our revolving credit facility. Long-term capital lease obligations were $33.4 million as of June 30, 2015. Our long-term debt balance is net of $56.5 million of original issue discount on the term loan B facility.

Capital expenditures totaled $68.7 million during the second quarter of 2015, decreasing from $92.0 million for the first quarter of 2015 on a pro forma basis⁽²⁾. The majority of our capital expenditures during the first half of the year consisted of construction costs for previously ordered equipment, as well as maintenance of our existing equipment and other activity to extend the useful life. Capital expenditures for the second half of 2015 are expected to decline significantly, with our remaining 2015 capital expenditures currently expected to range from $50.0 million to $60.0 million primarily for maintenance of our existing equipment.

Results for the Six Months Ended June 30, 2015

For the six months ended June 30, 2015, we reported net loss of ($95.8 million), or ($1.08) per diluted share, on revenue of $912.4 million, compared to net income of $22.7 million, or $0.40 per diluted share, on revenue of $684.5 million for the six months ended June 30, 2014.

Adjusted Net Loss⁽¹⁾ for the six months ended June 30, 2015 was ($60.7 million), or ($0.69) per diluted share⁽¹⁾. Adjusted Net Loss excludes: a $28.7 million, or $0.32 per diluted share, after-tax charge related to costs

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associated with the Transaction; severance costs of $1.3 million, or $0.01 per diluted share; customer settlement/bad debt write-off charges of $3.2 million, or $0.04 per diluted share; and an inventory write-down of $2.0 million, or $0.02 per diluted share. For the six months ended June 30, 2014, we reported Adjusted Net Income⁽¹⁾ of $27.2 million, or $0.48 per diluted share⁽¹⁾, after excluding a $4.5 million, or $0.08 per diluted share, after-tax charge related to costs associated primarily with the Transaction.

For the six months ended June 30, 2015, we reported Adjusted EBITDA⁽¹⁾ of $52.1 million, compared to Adjusted EBITDA⁽¹⁾ of $95.7 million for the six months ended June 30, 2014.

Conference Call Information

We will host a conference call on Thursday, August 6, 2015 at 10:00 a.m. Eastern / 9:00 a.m. Central Time to discuss our second quarter 2015 financial and operating results. Interested parties may listen to the conference call via a live webcast accessible on our website at www.cjenergy.com or by calling U.S. (Toll Free): 1-877-870-4263 or International: 1-412-317-0790 and asking for the “C&J Energy Services Earnings Call.” Please dial-in a few minutes before the scheduled call time. An archive of the webcast will be available shortly after the call on our website at www.cjenergy.com for 12 months following the call. A replay of the call will also be available for one week by calling U.S. (Toll Free): 1-877-344-7529 or International: 1-412-317-0088, using the access code: 10069973.

About C&J Energy Services

C&J Energy Services is a leading provider of well construction, well completions, well support and other complementary oilfield services to oil and gas exploration and production companies. As one of the largest completion and production services companies in North America, C&J offers a full, vertically integrated suite of services involved in the entire life cycle of the well, including directional drilling, cementing, hydraulic fracturing, cased-hole wireline, coiled tubing, rig services, fluids management services and other special well site services. C&J operates in most of the major oil and natural gas producing regions of the continental United States and Western Canada. The Company also has an office in Dubai and is working to establish an operational presence in key countries in the Middle East. For additional information about C&J, please visit www.cjenergy.com.

C&J Energy Services Investor Contact:

investors@cjenergy.com

713-260-9986

Forward-Looking Statements and Cautionary Statements

This news release (and any oral statements made regarding the subjects of this release, including on the conference call announced herein) contains certain statements and information that may constitute “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements, other than statements of historical facts, that address activities, events or developments that we expect, believe or anticipate will or may occur in the future are forward-looking statements. The words “anticipate,” “believe,” “ensure,” “expect,” “if,” “intend,” “plan,” “estimate,” “project,” “forecasts,” “predict,” “outlook,” “aim,” “will,” “could,” “should,” “potential,” “would,” “may,” “probable,” “likely,” and similar expressions, and the negative thereof, are intended to

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identify forward-looking statements. Without limiting the generality of the foregoing, forward-looking statements contained in this press release specifically include statements, estimates and projections regarding the effects of the Transaction, our business outlook and plans, future financial position, liquidity and capital resources, operations, performance, acquisitions, returns, capital expenditure budgets, costs and other guidance regarding future developments. For example, statements regarding future financial performance, future competitive positioning and business synergies, future acquisition cost savings, future accretion to earnings per share, future market demand, future benefits to stockholders, and future economic and industry conditions are forward-looking statements within the meaning of federal securities laws.

Forward-looking statements are not assurances of future performance. These forward-looking statements are based on management’s current expectations and beliefs, forecasts for our existing operations, experience, and perception of historical trends, current conditions, anticipated future developments and their effect on us, and other factors believed to be appropriate. Although management believes that the expectations and assumptions reflected in these forward-looking statements are reasonable as and when made, no assurance can be given that these assumptions are accurate or that any of these expectations will be achieved (in full or at all). Moreover, our forward-looking statements are subject to significant risks and uncertainties, many of which are beyond our control, which may cause actual results to differ materially from our historical experience and our present expectations or projections which are implied or expressed by the forward-looking statements. Important factors that could cause actual results to differ materially from those in the forward-looking statements include, but are not limited to: potential adverse reactions or changes to business relationships resulting from the Transaction and competitive responses to the Transaction; costs and difficulties related to the integration of C&J’s business and operations with the C&P Business’s business and operations; the inability to obtain or delay in obtaining cost savings and synergies from the Transaction; unexpected costs, the outcome of pending or potential litigation; the inability to retain key personnel; any changes in general economic and/or industry specific conditions; risks relating to economic conditions; volatility of crude oil and natural gas commodity prices; delays in or failure of delivery of current or future orders of specialized equipment; the loss of or interruption in operations of one or more key suppliers or customers; oil and gas market conditions; the effects of government regulation, permitting and other legal requirements, including new legislation or regulation of hydraulic fracturing; operating risks; the adequacy of our capital resources and liquidity; weather; litigation; competition in the oil and natural gas industry; and costs and availability of resources.

C&J cautions that the foregoing list of factors is not exclusive. For additional information regarding known material factors that could cause our actual results to differ from our present expectations and projected results, please see our filings with the U.S. Securities and Exchange Commission (“SEC”), including our Current Reports on Form 8-K that we file from time to time, Quarterly Reports on Form 10-Q and Annual Report on Form 10-K. Readers are cautioned not to place undue reliance on any forward-looking statement which speaks only as of the date on which such statement is made. We undertake no obligation to correct, revise or update any forward-looking statement after the date such statement is made, whether as a result of new information, future events or otherwise, except as required by applicable law.

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C&J Energy Services Ltd.

Consolidated Statements of Operations

(In thousands, except per share data)

(Unaudited)

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C&J Energy Services Ltd.

Consolidated Balance Sheets

(In thousands, except share data)

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C&J Energy Services Ltd.

Consolidated Statements of Cash Flows

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(Unaudited)

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C&J Energy Services Ltd.

Reconciliation of Adjusted Net Income (Loss) to Net Income (Loss)

(In thousands)

(Unaudited)

C&J Energy Services Ltd.

Reconciliation of Adjusted EBITDA to Net Income (Loss)

(In thousands)

(Unaudited)

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C&J Energy Services Ltd.

Reconciliation of Adjusted EBITDA to Net Loss

(In thousands)

(Unaudited)

C&J Energy Services Ltd.

Reconciliation of Adjusted EBITDA to Net Loss

(In thousands)

(Unaudited)

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C&J Energy Services Ltd.

Reconciliation of Adjusted EBITDA to Net Loss

(In thousands)

(Unaudited)

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Pro Forma Financial Information

The following pro forma financial information gives effect to the Transaction as if it were consummated on January 1, 2014, the beginning of the comparable prior reporting period (in thousands, unaudited):

C&J Energy Services Ltd.

Pro Forma Financial Information

C&J Energy Services Ltd.

Reconciliation of Pro Forma Adjusted EBITDA to Pro Forma Net Loss

(In thousands)

(Unaudited)

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C&J Energy Services Ltd.

Reconciliation of Adjusted Pro Forma Net Loss to Pro Forma Net Loss

(In thousands)

(Unaudited)

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