A self-cleaning instrument for evaluating the thickening performance of drilling plugging materials

Abstract

The invention discloses an auto-cleaning device for evaluating the thickening performance of drilling and leakage plugging materials, which relates to the field of drilling and exploration. The upper and lower ends of the kettle body are both open, the kettle body is arranged in the inner ring of the third bearing, the outer ring of the third bearing is connected with the first limb arm, and the first limb arm is used to limit the position of the kettle body; the kettle body and the thickening The motor is detachably connected and driven by the thickening motor to rotate. This thickening performance evaluation instrument can realize electric heating and air pressurization to simulate the underground environment, and the kettle body can be completely sealed, so that the obtained thickening time is closer to the actual thickening time, and it is convenient for relevant personnel to understand the actual performance parameters of the thickening object At the same time, the thickening performance evaluation instrument can be automatically cleaned after the test is completed, which can effectively prevent the thickening object from solidifying in the kettle body, and is convenient for subsequent use.

Description

technical field [0001] The invention relates to the field of drilling exploration, in particular to an automatic cleaning instrument for evaluating the thickening performance of drilling plugging materials. Background technique [0002] Lost circulation is one of the most troublesome drilling problems. Some well control problems may also result from increased economic costs due to the loss of expensive drilling fluids into the formation. The incidence of lost circulation in the world accounts for about 20% to 25% of the total number of wells, so lost circulation has always been a concern at home and abroad. Through scientific research, plugging materials represented by bridging, high water loss, and solidification have been developed at home and abroad, and a series of drilling fluid pressure plugging technologies have been formed. Compared with conventional plugging materials, curable plugging materials have higher pressure-bearing plugging capacity, easy control of curin...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a self-cleaning drilling plugging material thickening performance evaluation instrument that solves the problem of the thickening time obtained by the existing thickening performance evaluation instrument and the thickening time in the actual environment. There are large discrepancies, and the problem of inconvenient cleaning after the test

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