On August 24, the reporter learned from the Yuzhong Geological Survey Company of the Provincial Coalfield Geology Bureau that the company had just completed a group of coalbed methane “U-shaped†wells in Xiyang, Shanxi Province on the 23rd. The successful completion of the project marks a new breakthrough in the field of coalbed methane drilling technology in our province, which is expected to increase the gas production several times. The “U-shaped†well of coalbed methane is also called the remote docking horizontal well. It means that one well and the other well realize the remote docking in the depth of the stratum. Using the principle of water gravity, the fluid circulation is established to achieve the effect of drainage and pressure reduction and gas desorption. Increase gas production. The success of this technology can greatly reduce the occupation of engineering land. According to industry insiders, the “U-shaped†well is the most difficult to construct in the current drilling field, and only a few drilling companies in China have mastered it. This group of coalbed methane “U-shaped†wells, designed and independently developed by Yuzhong Company, has successfully adopted domestic advanced drilling fluid technology and wireless LWD real-time monitoring system to ensure remote docking. Once successful, and successfully broke through the difficult problem of coal seam orientation difficult, directional docking difficulty, logging risk, casing difficulties, cementing quality is difficult to guarantee and many other problems. The acceptance data shows that the drilling quality has completely reached the design standard, which also indicates that Yuzhong Company of our province has reached a new technical height in the field of high-difficult drilling of coalbed methane using its own drilling rig and its own technology.
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