Well drilling plugging material thickening performance evaluation instrument capable of automatically cleaning

Abstract

The invention discloses a well drilling plugging material thickening performance evaluation instrument capable of automatically cleaning, and relates to the field of well drilling exploration. The instrument comprises a cleaning device, a kettle body, a thickening motor, a heating part, a test ending part, a top cover and a bottom cover; the upper end and the lower end of the kettle body are open, the kettle body is arranged in the inner ring of a third bearing, the outer ring of the third bearing is connected with a first limb, and the first limb is used for limiting the position of the kettle body; and the kettle body is detachably connected with the thickening motor and is driven by the thickening motor to rotate. According to the thickening performance evaluation instrument, the underground environment can be simulated through electric heating and air pressurization, and the kettle body can be completely sealed, so that the obtained thickening time is closer to the actual thickening time, and relevant personnel can conveniently know the actual performance parameters of a thickened object; meanwhile, the thickening performance evaluation instrument can be automatically cleaned after the test is finished, so that a thickened object is effectively prevented from being solidified in the kettle body, and subsequent use is facilitated.

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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