A Drilling Fluid Dynamic Damage Evaluation Instrument Based on Glass Core
A drilling fluid and core technology, applied in the field of drilling fluid dynamic damage evaluation instrument, can solve the problems of inability to evaluate drilling fluid damage, achieve the effects of improving the accuracy of damage evaluation, increasing the flexibility of selection, and improving the accuracy of acquisition
Active Publication Date: 2021-03-30
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
[0005] Aiming at the above-mentioned deficiencies in the prior art, a glass core-based drilling fluid dynamic damage evaluation instrument provided by the present invention solves the problem that the existing evaluation instrument cannot accurately evaluate the drilling fluid damage
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[0038] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0039] Such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5As shown, the drilling fluid dynamic damage evaluation instrument based on the glass core includes a controller 10 and a support 1, the support 1 is provided with a kettle body 2, the inside of the kettle body 2 is provided with a well 4 for placing drilling fluid, and the kettle body 2 The upper end is provided with a manhole cover 6, and the side ...
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The invention discloses a drilling fluid dynamic damage evaluation instrument based on a glass core, which belongs to the field of drilling exploration, and includes a controller and a bracket. A kettle is arranged on the bracket, and a well for placing drilling fluid is arranged inside the kettle. The upper end of the body is provided with a well cover, the side of the kettle body is provided with a core holding assembly connected to the well, and the other end of the core holding assembly is movably provided with a metering assembly; the inside of the well is provided with an agitator for stirring the drilling fluid, and the outside of the kettle is provided with a useful The power part is used to drive the agitator; the well cover is provided with a data detection hole for installing a temperature and pressure sensor, and a pressure hole for installing a pressure device. The present invention can prevent the drilling fluid from staying in the diversion chamber, and can also count the drilling fluid filled in the glass core, which can greatly improve the acquisition accuracy of the drilling fluid fluid loss, and further improve the drilling fluid damage evaluation accuracy.
Description
technical field [0001] The invention relates to the field of drilling exploration, in particular to a glass core-based drilling fluid dynamic damage evaluation instrument. 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. [0003] Filtration refers to the penetration of free water in the drilling fluid into the cracks or pores of the well wall rock under the action of pressure difference. During the filtration process, some solid particles in the drilling fluid will adhere to the well wall to form a mud cake. After the mud cake is formed on the well wall, it will prevent or slow down the further intrusion of water in the ...
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IPC IPC(8): G01N15/08
CPCG01N15/08G01N1/38G01N33/2823
Inventor 佘继平李阳韩凯倪建军张浩
Owner CHENGDU UNIVERSITY OF TECHNOLOGY