Acidizing fracturing fluid performance testing device and its application
A technology of acid fracturing and testing equipment, which is applied in the direction of measuring equipment, soil material testing, flow characteristics, etc., and can solve the problems of inaccurate test results, inability to truly simulate the actual situation, and single crack angle.
Active Publication Date: 2017-10-17
PETROCHINA CO LTD
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Problems solved by technology
The problem is that the fracture angle used to simulate the formation is relatively single, which cannot truly simulate the actual situation, resulting in inaccurate test results
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[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0043] In the prior art, when testing the performance of acidified fracturing fluid, the usual method is to make the rock core to be tested into a flat plate, and then apply a closing pressure to two oppositely arranged, flat cores, and then introduce the acidized fracturing fluid into the Acid etching is carried out in the gap between two flat cores. The existing problem is: flat rock cores are set relative to each other, and the ...
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The embodiment of the present application provides a performance testing device for acidified fracturing fluid and its application, including: two semi-cylindrical core holders, the plane ends of the two core holders are arranged oppositely; The end is provided with a rotating part, and the rotating part is provided with a first groove; the two core holders can rotate around the first rotating shaft formed by the cooperation of the two rotating parts; The suitable concave part can rotate and cooperate with the curved surface end, and the pressure application housing can exert pressure on the two core holders so that the two planar ends fit together. This application provides that the rock core holder to be tested is prepared into a semi-cylindrical shape. When the rock core holder rotates around the rotation axis, the recessed part of the pressure-applying shell can always apply a closing pressure to the rock core through the curved surface end without changing The pressure application direction of the pressure application housing can realize the multi-angle change measurement of the rock core.
Description
technical field [0001] The invention belongs to the field of acidified fracturing fluid performance testing, in particular to a performance testing device for acidizing fracturing fluid and its application. Background technique [0002] Acid fracturing refers to squeezing acid liquid into the reservoir at a pressure higher than the fracture pressure of the reservoir or the closure pressure of natural fractures to form fractures in the reservoir, and at the same time the acid liquid reacts with the rock on the fracture wall to etch the fractures non-uniformly wall rock. The formed groove-like or uneven etched fractures are not completely closed after the construction, and finally form artificial fractures with a certain geometric size and conductivity, which improves the conductivity of oil and gas wells, thereby increasing the production of oil and gas wells . [0003] Normally, the way to test the conductivity of acidized fracturing fluid in the laboratory is to place two...
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IPC IPC(8): G01N11/00G01N33/00
CPCG01N33/24C09K8/72G01N11/00
Inventor 王海燕卢拥军管保山邱晓慧明华刘萍翟文
Owner PETROCHINA CO LTD