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The Yubei area is located in the northwestern part of the Maigeti slope in the southwestern depression of the Tarim Basin. The Yubei 1 well is over 30 tons of oil in the middle of the Ordovician Yingshan Formation. The subsequent deployment of Yubei 6A and Yubei 8 Many wells such as Yudong 4 and other wells in the Yingshan Formation encountered good oil and gas display, showing good prospects for exploration in the Yubei area, and it is one of the key exploration areas of the Northwest Oilfield in recent years.
However, due to the multi-stage tectonic movement and the superposition and reconstruction of the fault activity, the geological features of the Yubei area are complex, and the Paleozoic stratum rock can be drilled poorly. In the early Paleozoic Permian and Carboniferous strata, the average drilling rate was only 1.6 m/h, and the average drilling time was 99 days, accounting for 56.7% of the total well drilling time, which greatly affected the Yubei. The drilling speed of the area has become a stumbling block in the exploration and development process. Therefore, it is of great significance to accelerate the exploration and development of the Yubei area by carrying out engineering pilot test research and supporting the formation of deep formation rapid drilling technology.
The two pilot projects of this acceptance are closely combined with the characteristics of the strata. Based on the research on the selection of drill bits, the new layered rapid drilling technology such as torsion impactor and turbine is preferred, and the test application is carried out on site to actively promote scientific research results. Conversion. In the Paleozoic Shajingzi group, the “PDC+torque impactor†drilling process was applied in 5 wells, and the mechanical drilling rate increased by 176.85% year-on-year, and the comprehensive cost decreased by 28.68%. In the Zelek group and the Kupukuz full group The application of "pregnancy diamond bit + turbine" drilling process field test 2 well times, the mechanical drilling rate increased by 98%-140%, and the results of speed increase and efficiency improvement were remarkable. Effectively solved the "difficult problem" of slow drilling speed in the three-open well section, laid a solid foundation for engineering technology support, and became the "new engine" for drilling speed increase in Yubei area, which effectively promoted the northwest oil field. "The implementation of strategic deployment.
Abstract On April 23, a good news came from Chengdu, Sichuan Province: the application of the Torque Impactor in the Shajingzi Formation in the Yubei area and the application of the Turbine in the Paleozoic strata in the Yubei area. Engineering technology pilot test and promotion application project successfully passed Zhongshi...
On April 23, a good news came from Chengdu, Sichuan: the application of the Torque Impactor in the Shajingzi Formation in the Yubei area and the application of the Turbine in the Paleozoic strata in the Yubei area. The technology pilot test and promotion application project passed the acceptance of Sinopec Petroleum Engineering Company.