This year's drilling engineering technology work in Tarim Oilfield, in accordance with the requirements of oilfield companies to “catch prominent contradictions, solve practical problems, enhance the pertinence, timeliness and effectiveness of technological breakthroughs, and escort the drilling speed and efficiency”, continue to technological innovation. Breakthroughs in multiple technologies have provided strong technical support for good and fast drilling. Up to now, the total footage of oilfield drilling has increased by nearly 10,000 meters compared with the same period of last year, the average drilling cycle has dropped by 9 days, and the overall aging time has decreased. This achievement is the result of a number of drilling engineering technology innovations.
Vertical drilling technology has become a more mature drilling technology. This technology has been widely used in the upper section of the piedmont well in Dabei, Dina, and Yangbei, and has already emerged from the high cost and low efficiency dilemma. It has opened up a way to avoid casing damage and improve the drilling speed of the upper section of the mountain front well. shortcut. This year, the average drilling cycle of the mountain front well decreased by 19.78 days, with a decrease of 8.22%, and the monthly speed of the rig increased by 107.64 meters, an increase of 21.32%. Dina 2-8 drilled to 5036 meters in 117 days, saving 72 days than the design cycle, becoming the shortest well in the Dina block to 5000 meters, and the fastest Dina 2-5 well in the Bidina block. It will be 35 days faster.

This year, the biggest highlight of oilfield engineering technology advancement is the major breakthrough in “light mud” technology. After the initial success of the technology in the Yangta 1-7 well, the technology was tested in the Yangta 3 well and achieved good speed-up results. The Yangta 3 well is a pre-exploration well deployed by the oilfield company in the Yangtaike area. The well was drilled from the drilling to the 4,009-meter section with “light mud” technology. The well wall of the whole test well was basically stable and there was no collapse. The entire test section saved 43 days over the design cycle, creating the fastest record of the mechanical drilling rate in the Yangtuck block. Practice has proved that the "light mud" technology has broad application prospects.

This year, the oilfield company increased the investment in engineering research funds, and the annual investment in drilling research was more than 50 million yuan.

In April of this year, the pressure-controlled drilling of three wells, Tazhong 722, Middle 2, and Lunan 633, was successful. In July, in response to the problem that the pressure of the third layer under the Dina 2 block was extremely sensitive and the drilling fluid was seriously lost, the drilling-drilling technology test was carried out in the Dina 2-4 well, and the test was carried out in the narrow pressure window of the target layer. Conduct and achieve initial results. In August, the Dabei 3 well was deepened by three times to drill a sidetrack, in the deep multi-layer composite salt layer engineering operation, ultra-deep well sidetracking, ultra-high-density high-temperature mud system application, ultra-high-pressure wellbore drilling under ultra-high pressure conditions. Be successful.

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