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Permian Basin 2017

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PERMIAN BASIN: TECHNOLOGY 54 | November 2017 | hartenergy.com "In the past, the directional drilling work flow was largely inside the head of the directional driller," Hildebrand said. "As a result, you would get a hole in ground, and static survey points every few feet," she said. "It was a very coarse level of information. Now we have a computer that is looking at real-time data, figuring out what really did happen. It grades every slide on the direction it went. It looks at how accurately you have been able to hold that tool- face. It provides consistent feedback so can you can intervene and make a fine-course adjustment when there has been a slight deviation, before it turns into a bigger deviation. Hildebrand noted that in something as complex as constructing a well, many people and companies are involved. "One company provides the bit, another the MWD, another the mud, another the instrumenta- tion," she said. "You may get best-in-class individ- ual pieces. But it becomes difficult to put all these pieces together so you have a best-in-class well, with no surprises." Hildebrand said the philosophy of the cognitive drilling rig is to move past siloed operations and data at the well site, and the discrete technical solu- tions that, no matter how good, are aimed at only part of the process. The technology is designed to be open so that it provides integration and auto- mation on other drilling contractors' rigs as well as Schlumberger rigs. "Through our Rig Power and Controls group, previously known as Omron Oilfield & Marine, we have the technical means and abilities to integrate and deploy automation capabilities on modern rigs with various drilling contractors," she said. "The organizing theme around all of this is changing how wells are planned and executed," Hildebrand noted. The key is an executable digital well plan. "Today, we have a paper well plan," she said. "Everybody refers to this piece of paper to interpret what it means to them, what they should do next. With something of a digital nature, you can streamline this overall system, and orchestrate it in a way we never could do. It is a holistic approach." Acing chemistry and physics Russell Padalecki, a principal technical professional for Halliburton in Midland, looks to customized chemistry as a key to unlocking more Permian Basin production. "It is important everywhere, but especially in the Permian because of the variability in our geology," Padalecki said. "We've introduced microemulsion technology in the form of the Transcend Permea- bility Enhancer package. This expands the reservoir contact area and improves fluid flow." A case study on a Midland Basin project notes a Howard County operator first used Halliburton's RockPerm testing to confirm rock and fluid char- acteristics, then followed with the Transcend pack- age to optimize fluid recovery after the fracture. The fracture treatments resulted in improved load recovery and a 61% increase in barrels of oil equiv- alent when compared to equivalent direct offset wells using conventional surfactants. Compared to those offset wells, in the first three months of initial production, incremental revenue exceeded $1.7 million. Geology enters the picture at this point, as Halliburton customizes chemistry based on for- mation characteristics. "The Wolfcamp in the Midland Basin doesn't nec- essarily equal the Wolfcamp in the Delaware," Padal- ecki said. "In fact, Reeves County Wolfcamp is not even necessarily equal to Ward County Wolfcamp. There is a specific chemistry, county to county. We continue to gain experience through our testing." Water volumes are drastically increasing for both frack jobs and flowbacks. Frack service com- panies are in the discussions about recycling pro - duced water, using municipal water or blending brackish and freshwater. "Water quality affects things quite a bit, espe- cially the type of chemistry we apply on the frack itself," Padalecki said. "A design might work well in freshwater, but with lower-quality water, some of those chemistries don't work. So we move on to others. We have a full line of friction reducers and other types of chemistry to apply." Operators and service providers have found yes- terday's recommended water standards are out the window.

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