The 40002 drilling team of the North China Drilling and Drilling Company II North Shaanxi Project Department recently drilled a clustered directional well with a design depth of 3,744 meters in the Suligesu 11 block. This year, the same type of directional well type construction drilling cycle and construction of this block was created this year. The shortest well cycle (14 days and 19 days respectively), the average rate of mechanical drilling and the fastest monthly rate (21.88 m / h and 6,345.55 m / month respectively) were the highest indicators of production aging.
The 1180ï½ž2751m section of the Mesozoic in the Su 11 block is a mixture of deep gray mudstone and red glutenite. The rock formation is loose, and well leakage, well collapse and stuck drilling accidents are likely to occur during drilling. Entering the Paleozoic section of 3035ï½ž3744 meters, it encounters the lithologically hard gray sandstone and the black coal seam, and the well track is difficult to control.
The drilling team applies composite directional drilling technology, selects a personalized Diamond Drill Bit, determines the optimal slanting point, and uses the monitoring while drilling to ensure the scientific compatibility of the drilling tool combination, drilling technical parameters, water horsepower parameters and mud performance system, ensuring that the drill bit reaches the bottom of the well. Hit the bull's eye.
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