Apache Corporation And Total S.A. Announce Significant Oil Discovery Offshore Suriname

• Maka Central-1 well confirms geologic model with 73 meters (240 feet) of oil pay and 50 meters (164 feet) of light oil and gas condensate pay; appraisal planning is underway.
• Drilling at the next well, Sapakara West-1, approximately 20 kilometers (12 miles) southeast of Maka Central-1, will test the same-aged upper Cretaceous intervals in a separate and distinct stratigraphic feature.

Houston, TX (GLOBE NEWSWIRE) - Apache Corporation (NYSE, Nasdaq: APA) and Total S.A. (NYSE: TOT) today announced a significant oil discovery at the Maka Central-1 well drilled offshore Suriname on Block 58. The well was drilled using the drillship Noble Sam Croft with Apache as operator holding a 50% working interest and Total holding a 50% working interest.

Maka Central-1 successfully tested for the presence of hydrocarbons in multiple stacked targets in the upper Cretaceous-aged Campanian and Santonian intervals and encountered both oil and gas condensate. The formation evaluation program included logging-while-drilling and wireline logs, formation pressures, and preliminary core and fluid analysis. Together with future appraisal wells, this data will be used to quantify the resource in the Campanian and Santonian formations.

The shallower Campanian interval contains 50 meters (164 feet) of net hydrocarbon-bearing reservoir. Preliminary fluid samples and test results indicate light oil and gas condensate with API gravities between 40 and 60 degrees.

The deeper Santonian interval contains 73 meters (240 feet) of net oil-bearing reservoir. Preliminary fluid samples and tests results indicate API oil gravities between 35 and 45 degrees.

The Maka Central-1 also targeted a third interval, the Turonian, a geologic analogue to oil discoveries offshore West Africa. Prior to reaching this interval, the well encountered significantly over-pressured, oil-bearing reservoirs in the lower Santonian, and the decision was made to conclude drilling at approximately 6,300 meters (20,670 feet). The pressures encountered in the lower Santonian are a positive sign for the Turonian and future drilling will test this interval.

“We are very pleased with results from Maka Central-1. The well proves a working hydrocarbon system in the first two play types within Block 58 and confirms our geologic model with oil and condensate in shallower zones and oil in deeper zones. Preliminary formation evaluation data indicates the potential for prolific oil wells. Additionally, the size of the stratigraphic feature, as defined by 3-D seismic imaging, suggests a substantial resource,” said John J. Christmann, Apache CEO and President.

“Block 58 comprises 1.4 million acres and offers significant potential beyond the discovery at Maka Central. We have identified at least seven distinct play types and more than 50 prospects within the thermally mature play fairway. In partnership with Total, we look forward to advancing both exploration and development of discoveries on the block,” Christmann said.

The Sam Croft will drill the next wells in Block 58, starting with the Sapakara West prospect. Sapakara West-1, located approximately 20 kilometers (12 miles) southeast of the Maka Central discovery, will test oil-prone upper Cretaceous targets in the Campanian and Santonian intervals.

About Apache
Apache Corporation is an oil and gas exploration and production company with operations in the United States, Egypt and the United Kingdom. Apache posts announcements, operational updates, investor information and copies of all press releases on its website, www.apachecorp.com.

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Cautionary note to investors
The SEC permits oil and gas companies, in their filings with the SEC, to disclose only proved, probable, and possible reserves that meet the SEC's definitions for such terms. Apache may use certain terms in this release, such as "resources," "potential resources," "resource potential," "estimated net reserves," "recoverable reserves," and other similar terms that the SEC guidelines strictly prohibit Apache from including in filings with the SEC. Such terms do not take into account the certainty of resource recovery, which is contingent on exploration success, technical improvements in drilling access, commerciality and other factors, and are therefore not indicative of expected future resource recovery and should not be relied upon. Investors are urged to consider carefully the disclosure in Apache's Annual Report on Form 10-K for the fiscal year ended Dec. 31, 2018, available from Apache at www.apachecorp.com or by writing Apache at: 2000 Post Oak Blvd., Suite 100, Houston, TX 77056 (Attn: Corporate Secretary). You can also obtain this report from the SEC by calling 1-800-SEC-0330 or from the SEC's website at www.sec.gov.

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