Domestic impregnated diamond drill bits set new record

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Abstract On May 10th, good news came from the Yuanlu 30 well in northeastern Sichuan. The diamond-inlaid diamond drill bit developed by Shengli Oilfield Drilling Institute created two new domestically produced drill bits in the well with a single footage of 259.99 meters and a total footage of 418.55 meters. recording. Pregnancy diamond drill bit is a victory
On May 10, a good news came from the Yuanlu 30 well in northeastern Sichuan. The impregnated diamond drill bit developed by Shengli Oilfield Drilling Institute created a new record of two domestic impregnated drill bits in the well with a single footage of 259.99 meters and a total footage of 418.55 meters. .

The impregnated diamond drill bit is a new type of drill developed by Shengli Oilfield Drilling Institute for the poor drillability of rock in northeastern Sichuan, the difficulty of drill bit and slow drilling speed. The working layer of the drill bit is composed of diamond and carcass material, which is fundamentally different from the diamond-inlaid diamond bit. The cutting teeth of the impregnated drill bit are not edged, but are embedded in the carcass material. The rock breaking mechanism approximates the grinding of the grinding wheel. The principle is that the rock is broken by grinding at high speed for drilling.

The impregnated diamond drill bit used in the Yuanlu 30 well entered the well on March 30. On April 7th, it was drilled into the formation, drilling 3818.5 meters to 3977.06 meters, the footage was 158.56 meters, and the average mechanical drilling rate was 1.22 meters per hour. . On April 26, the drill bit entered the well again. On May 10, it drilled to the gas layer and waited for the acceptance of the party. The drilling was drilled into the formation of 4,089.17 meters to 4,349.16 meters, the footage was 259.99 meters, and the mechanical drilling rate was 1.06 meters per hour. The well has a total length of 120.5 meters for the two cone bits before the application of the impregnated diamond drill bit. The total pure drilling time is 183 hours, and the average mechanical drilling speed is only 0.66 meters per hour.

The application of impregnated diamond drill bit has greatly improved the drilling speed in the northeastern Sichuan region, and solved the problems of less roller scale and slower drilling speed in the northeastern Sichuan.

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