Shulou(Shulou.com)11/24 Report--

Thanks to CTOnews.com netizen grass Luo Yuzi for the clue delivery! CTOnews.com, March 12, according to the official news of PetroChina, on March 9, the Gole 3C well in the Fuman oilfield in the hinterland of the Taklimakan Desert was successfully drilled, setting a new record for the deepest horizontal well in Asia with a depth of 9396 meters, marking that the ultra-deep oil and gas drilling capacity of the Tarim Oilfield has officially entered a new stage of 9000 meters, with the conditions for marching to a depth of 10,000 meters.

According to reports, the Gole 3C well is an ultra-deep sidetracking horizontal well deployed in Fuman Oilfield, which is drilled by the BHZ90005 drilling team of PetroChina's Bohai Sea drilling team. the well is located in the inaccessible desert, the underground geological structure is extremely complex, and the buried depth of the reservoir is generally more than 8000 meters. It is extremely difficult to understand and identify the reservoir, and has the characteristics of ultra-deep, ultra-high temperature and ultra-high pressure rarely seen in the world.

Zhou Bo, deputy director of the Oil and Gas Engineering Research Institute of Tarim Oilfield, said: "this has brought a huge test to our drilling engineering technology and domestic technology and equipment, which is equivalent to directional target shooting across an underground Mount Qomolangma, which is no less difficult than 'piercing needles' 100 meters away, and the difficulty of exploration and development is' rare in the world and only in China.'"

Shen Biao, manager of the production capacity construction department of oil and gas fields in Tarim Oilfield and deputy secretary of the party committee, said: "the successful drilling of this well proves that China's deep oil and gas geological theory and drilling engineering technology have stepped into the forefront of the world. It has effectively promoted the development and progress of domestic technology, equipment and industry in the deep field, and provided an important technical reserve for the Tarim Oilfield to enter the ultra-deep layer of 10,000 meters."

CTOnews.com popular science "horizontal well": different from the traditional vertical well passing through the reservoir vertically, after the horizontal well reaches the reservoir vertically or obliquely, the control bit will continue to drill along the direction parallel to the reservoir and maintain a certain length of horizontal section in the target layer. Horizontal well has the advantages of long distance through oil layer, large oil discharge area and high economic benefits, which can control more reservoirs, improve reservoir production efficiency, save land resources, and realize the efficient development of low-grade oil and gas resources.

In recent years, major breakthroughs have been made in the ultra-deep layers of the Tarim Oilfield. Last year, the average drilling depth exceeded the 7000-meter mark for the first time, and 72 wells, including Wheel 1 and Dabei 4, were successfully drilled to exceed 8000 meters of "underground Everest". More than 1600 wells with a depth of more than 6000 meters have been drilled, accounting for more than 80 per cent of the number of ultra-deep wells in the country.

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