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Unconventional Yearbook 2018

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60 | January 2018 | hartenergy.com 2018 UNCONVENTIONAL YEARBOOK | DOWNSPACING downspacing programs. Results in the Midconti- nent Stack and Scoop are encouraging. Continental's Compton unit tested the over- pressured oil window of Stack. The 10-well density pilot included five new wells in the Upper Meramec and four new wells and one parent well in the Lower Meramec. Laterals averaged 10,200 ft per well. The 10 wells flowed at a combined peak 24-hour rate of 22,032 boe (75% oil) or 2,203 boe/d per well. Aver- age completed well cost for the nine new Comp- ton wells was approximately $9.2 million, down approximately 28% from the cost of the parent well. Spacing was about 1,000 ft. Other pilots include the Sympson unit, a 2-mile long, dual-zone, 10-well pattern program with 14 wells. Two 1-mile parent wells and 12 children wells filled in a 1,280-acre unit pattern. This resulted in the equivalent of five wells in the Upper Woodford and five wells in the Lower Woodford. The 12 new wells produced at an average 24-hour peak produc- tion rate of 3,145 boe per day (11% oil) per well. The company's Celesta unit is in the Scoop Springer, a six-well ongoing test that adds infor- mation learned from earlier programs. One limit on spacing would seem to be produc- tion interference, but some interference is desired, and thick reservoirs require multiple layers of development. "If you don't see production interference at all, then your wells aren't close enough, and reserves in the unit are left behind," Gould said. "As far as layers go, we believe that thick geologic formations with over 250 ft of thickness, such as a large part of the Woodford in our Scoop acreage, will require developing two or more layers of wells in order to maximize the value of the units." Tulsa-based WPX Energy's current oil production is approximately 75,000 bbl/d, a new company record. Downspacing is contributing to that total, and con- verting the company's balance to more oil than gas. In the Delaware Basin, WPX's six-well Lindsay 10-15 pad scored big from the Wolfcamp A Forma- tion, with three of the five 1.5-mile laterals hitting 24-hour highs exceeding 4,000 boe/d (52% oil). The strongest of the three tagged 4,221 boe/d. The five long laterals on the Lindsay pad had 30-day production averaging nearly 3,100 Boe/d (54% oil) per well. The sixth well was a 1-mile lateral that had 30-day production averaging 1,593 Boe/d (53% oil). Using the visual term "wine-rack" for its downspacing programs, WPX planned to continue WPX Energy deploys three rigs on a nine-well spacing test in the Delaware Basin. WPX is using the results of the pilot test to help determine optimal methods for developing the Upper and Lower Wolfcamp A landing zones. (Photo by Jim Blecha, courtesy of WPX)

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