Three unconventional oil and gas reservoirs of well control in Tuha Oilfield
China Petroleum Network News bit as long as the eyes of pangolin, in the 1102 meters horizontal, 2 meters thick reservoir in stealth, smooth find oil and gas. At present, this kind of precise control well trajectory has become the commonly used speed increasing technique in Tuha oilfield.
The Turpan Hami oil field has three unconventional reservoirs, including tight oil, volcanic rocks and ultra deep heavy oil. It is a world-class development problem. Since the beginning of this year, Turpan Hami oilfield drilling speed in deep exploration research about the deep volcanic rocks in Santanghu basin three Ukraine, Lucaogou Formation of tight oil, Tuha basin Lukeqin deep heavy oil and other key areas of exploration, test in 5 wells. Among them, the 33 well tests the new PDC bit, the drilling speed of the same well section increases by 138.5%; the west 2 well uses the card design, the PDC bit and the strong inhibition drilling fluid system, the drilling speed increases by 172.5% near the well.
Turpan Hami oilfield has carried out the drilling speed demonstration well project in block 6 of Yu Jing, optimized the well structure and well trajectory, and mainly attacked 7 wells. Among them, 5 directional wells, compared with 2016, drilling speed increased by 1/5, two horizontal wells, compared with 2016, drilling rate doubled.
At the same time, on the basis of weak gel drilling fluid system, new technology research and development and production of independent lubricant application, effectively improve the lubricating property of drilling fluid, ensure the directional and horizontal section safety and fast drilling. Lake Ping 17-20 well developed and produced WR-1 new drilling fluid lubricant, drilling cycle shortened by 1/3.
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