Pre-set diamond drill bit to create the shortest time record of turbine drilling

Abstract Recently, from the Chuanxi Zangshang Pre-Occupation Front Line, the Good News was reported. The Dushen-1 well, which was constructed by the Sichuan Drilling Company 70139XN well team, used turbine drilling technology in the highly abrasive Duan 2,530-10,777-meter section, 23.4 days. Construction 467 meters, Chuangchuan West area...
Recently, from the Chuanxi Zangshang, the pre-war battle line was re-transmitted, and the Dushen-1 well, which was constructed by the Sichuan Drilling Company 70139XN well team, used turbine drilling technology in the highly abrasive Duan 2,530-1,777-meter section, 23.4 days of construction. At 467 meters, the shortest turbine drilling time in the Shoudi Formation in the western Sichuan area was recorded.

The Dushen 1 well is a pre-exploration vertical well deployed in the structure of the Chengdu sag in the western Sichuan depression. It is designed for the formation of the Middle Triassic Leikoupo Formation and the Upper Triassic Maantang Formation. The designed well depth is 6,350 meters. Open the deep structure of the well.

Before the construction, the team reserved enough drilling materials according to the drilling design, and developed drilling technical measures and emergency plans in a targeted manner, and carried out detailed technical disclosure. During the construction, attention is paid to the optimization and maintenance of mud performance, the drilling parameters are preferred, and the drilling operation procedures are strictly implemented to ensure the construction quality of the turbine drilling. The use of the "pregnancy diamond drill + turbine" drilling technology in the Shoudi Formation has achieved the shortest drilling time of the formation turbine. At the same time, the high-pressure fractured gas layer was drilled in the Xiaotangzi Formation, and the oil and gas display data was obtained for the first time in the western Sichuan area.

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