Method of Stickling of Water Well Drill Pipe for Adhesion Stickling

Classification:

Industry dynamics

Release time:

2020-07-03

【Summary Description】 The drill pipe of water well may be unstuck by jarring method within 30 minutes after sticking. Pull up and then slam or rotate. If there is no effect after 30 minutes of activity, do not move again. If it is a straight well, press down 2/3 of the weight of the drill pipe above the stuck point to bend the drill string, reduce the contact area with the well wall, and prevent the stuck point from moving. If it is a horizontal well or an inclined well, it cannot be pressurized, because the lower drill string is all on the lower side of the well wall, and the more it is, the more dead it is.
water well drill pipeWithin 30 minutes of sticking, it is possible to release the sticking by shock. Pull up and then slam or rotate. If there is no effect after 30 minutes of activity, do not move again. If it is a straight well, press down 2/3 of the weight of the drill pipe above the stuck point to bend the drill string, reduce the contact area with the well wall, and prevent the stuck point from moving. If it is a horizontal well or an inclined well, it cannot be pressurized, because the lower drill string is all on the lower side of the well wall, and the more it is, the more dead it is.
水井钻杆
Dissolve the card with clean water: ① Precondition: the formation is stable and there is no high-pressure layer. ② Unblocking method: drain the original drilling fluid and replace it with clean water, circulate it with a large pump for 30 minutes, rest it for 30 minutes, and repeat it for 10 times.
Use caustic soda to solve the card: ① Use the pull-up method to measure the position of the quasi-card point. ② Requirements: The purity of caustic soda is ≥ 96%, and the dosage is 1 ton. ③ Method of card release: add 1 ton of caustic soda to 10m of clear water, flush with sewage pump for 10 minutes, pump into drill pipe, send replacement slurry after completion, and then soak in place. Usage of fast T for card release: add 3 tons of fast T to 10m clear water, flush evenly, send drill pipe, then send replacement slurry, and then soak statically.
Use brine to speed up T-card release: ① There is a high pressure layer and the drilling fluid has a high specific gravity; ② Method for card release: add potassium chloride and calcium chloride to 10m clear water to form brine with the same specific gravity as drilling fluid, then add 4 barrels of fast T, flush evenly and send itwater well drill pipe, then send replacement slurry, then static immersion; ③ Precautions: After the card is unstuck, all fast T liquid shall be drained.
water well drill pipeUsing AD dry powder decabator
① Preparation: Replace all the original slurry with clear water, and keep 10m ³ slurry outside the well;
② Add AD dry powder decabator according to the proportion of 5% of the total pulp volume, and then continuously circulate large displacement.
Use crude oil and diesel oil to solve the card.
① 6m ³ crude oil and 3m ³ diesel oil are mixed evenly and then sent to the drill pipe, then sent to replace the slurry, and then statically soaked;
② After the card is removed, all the acid king aqueous solution shall be drained;
Note: the acid king has a strong corrosive, do not splash on the human body.

Key words:

weilida drill