A drilling fluid tank for judging the thickness of debris accumulation

Abstract

The invention discloses a well drilling liquid tank capable of judging the detritus depositing thickness. The well drilling liquid tank comprises a main tank body with a liquid level sensor and further comprises an auxiliary tank body arranged side by side with the main tank body. N flow channels vertically distributed and directly facing the liquid level sensor are formed between the main tank body and the auxiliary tank body. A partition plate hanging on the top face is fixed inside each flow channel, and the height of each partition plate is half of that of the corresponding flow channel. A pressure sensor is arranged on the vertically distributed and side, facing the auxiliary tank body, of each partition plate. A transverse shaft is further arranged on the side wall of each flow channel, a rotating plate is rotatably connected on each transverse shaft, faces the direction of the main tank body and can rotate around the transverse shaft. The transverse shafts are located between the partition plates and the auxiliary tank body, and the transverse shafts are mounted in the position being one half of the flow channels in height. The distance between each transverse shaft and the corresponding pressure sensor is smaller than the distance between the end of each rotating plate and the corresponding transverse shaft. The problem that in the prior art, after detritus in a slurry tank is deposited, the returning liquid level height cannot be judged accurately is solved, and the probing height of the liquid level sensor in the slurry tank can be conveniently corrected.

Description

technical field [0001] The invention relates to the field of petroleum exploitation, in particular to a drilling fluid tank for judging the accumulation thickness of cuttings. Background technique [0002] Mud tank, also known as drilling fluid tank and backflow tank, is a tank that passes between the wellhead and the solid control equipment when the drilling fluid flows back from the wellhead to the sedimentation tank or mud tank during the drilling and completion of oil production. It is used to convey the mud with cuttings or formation sand returned from the well. The mud tank is the sampling place for drilling fluid logging, which is of great significance for mud logging. Liquid level sensors are installed in the mud tanks to monitor the amount of drilling fluid returned, so that it is convenient for engineers to judge whether there is overflow, lost circulation or kick, etc. at the first time. Therefore, the liquid level signal measured by the liquid level sensor in t...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a drilling fluid tank for judging the accumulation thickness of cuttings, to solve the problem in the prior art that the cuttings in the mud tank cannot be accurately judged after the deposition of the liquid level, and to realize the convenient inspection of the fluid level in the mud tank. The purpose of correcting the detection height of the liquid level sensor

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