Tester for bearing plugging
A technology of leak tester and pressure-bearing cylinder, which is applied in construction and other directions, can solve the problems of single function of plugging material tester and inaccurate test data, and achieve the effect of true and accurate data, convenient use, reasonable and compact structure
Inactive Publication Date: 2012-04-04
CNPC XIBU DRILLING ENG
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Problems solved by technology
[0003]The present invention provides a pressure-bearing plugging tester, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of the single function of the plugging material tester and the difficulty in testing The problem of inaccurate data
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[0012] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.
[0013] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is based on the description attached to the description. figure 1 For example, the positional relationship of top, bottom, left, right, etc. is determined according to the layout direction of the drawings in the specification.
[0014] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:
[0015] as attached figure 1 As shown, the pressure-bearing plugging tester includes a pressure-bearing device, a crack simulation device, a buffer drainage device 1 and a recovery device 2; connected. The buffer drainage device 1 and the recovery device 2 are existing well...
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The invention relates to the technical field of a testing device for the plugging effect of drilling fluid in a shaft, in particular to a tester for bearing plugging. The tester comprises a bearing device, a fracture simulating device, a buffer drainage device and a recovery device which are fixedly connected together in sequence and are communicated, wherein the fracture simulating device comprises a bearing outer barrel, a plastic sleeve, an oil pressure meter, a hydraulic source joint and a switch valve; the plastic sleeve is sheathed in the bearing outer barrel; and the outer side of the bearing outer barrel is provided with the oil pressure meter and the hydraulic source joint communicated with the inner part of the plastic sleeve. In the tester, the structure is reasonable and compact, and the use is convenient; not only can the fracturing process of a rock core be simulated, but also the plugging effect can be judged by the volume change condition of the plugging slurry flowing out from the recovery device, and the use functions are diversified; and simultaneously the fracture simulating device leads the fracturing process of the rock core to be closer to the underground condition, so that the tested data is more true and accurate.
Description
technical field [0001] The invention relates to the technical field of a drilling fluid plugging effect testing device in a wellbore, and relates to a pressure-bearing plugging tester. Background technique [0002] During the drilling construction process, the drilling fluid loss increases the drilling cost, the drilling operation cannot be carried out smoothly, and may also lead to downhole complexity; the leakage caused by deep formation fractures is difficult to plug, and it is also required to have a high pressure bearing capacity to facilitate subsequent construction ; At present, the cracks simulated by the plugging material experimental instrument used in China are sealed with steel plates, which are quite different from rock cracks in the formation. Their functions are relatively single, and the test data is inaccurate. . Contents of the invention [0003] The invention provides a pressure-bearing plugging tester, which overcomes the above-mentioned deficiencies i...
Claims
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Inventor 周双君唐玉科周显东张璐王海涛
Owner CNPC XIBU DRILLING ENG