Evaluation method and device for artificial fracture wall compaction damage caused by proppant embedding
A technology of artificial fracture and evaluation method, applied in the field of oil and gas exploration, to achieve the effect of reliable testing principle
Active Publication Date: 2020-06-09
PETROCHINA CO LTD
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[0005] The invention provides a method and device for evaluating the compaction damage of artificial fracture wall surface caused by proppant embedding, to characterize the impact of proppant embedding on fracture surface permeability caused by rock compaction
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[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0039] figure 1 It is a schematic flow chart of the evaluation method of the artificial fracture wall compaction damage caused by proppant embedding according to an embodiment of the present invention. Such as figure 1 As shown, the evaluation method of the artificial fracture wall compaction damage caused by the proppant embedding of the embodiment of the present invention may include steps:
[0040] S110: Under the set gas permeability testing conditions, measure the initial gas permeability of the core column;
[0041] S120: using the core column and proppant to...
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Abstract
The invention provides an evaluation method and device for man-made fracture wall surface compaction damage caused by proppant embedment. The method comprises the steps that under set gas log permeability test conditions, initial gas log permeability of a rock core column is determined; the rock core column and a proppant are utilized for making a rock and proppant interaction rock sample; a triaxial test is carried out on the rock and proppant interaction rock sample; under the set gas log permeability test conditions, the gas log permeability after compaction damage of the rock core column in the rock and proppant interaction rock sample obtained after the triaxial test is tested; according to the initial gas log permeability and the gas log permeability after compaction damage, the permeability loss rate of the rock core column is calculated to evaluate the degree of man-made fracture wall surface compaction damage caused by proppant embedment of the rock core column. Through the evaluation method and device, man-made fracture wall surface compaction damage caused by proppant embedment can be truly evaluated.
Description
technical field [0001] The invention relates to the technical field of oil and gas exploration, in particular to a method and device for evaluating compaction damage on artificial fracture walls caused by proppant embedding. Background technique [0002] Reservoir stimulation technology, as a key technology to stabilize and increase single well production, and as a necessary means for the exploitation of unconventional oil and gas resources such as shale gas and tight oil, has reached the level of "Wanfang liquid, Qianfang sand" in shale gas volume stimulation. "Construction scale. After fracturing, the interaction between fracturing fluid, proppant and formation, such as diagenesis, sedimentation, proppant fragmentation and embedding, will cause serious damage to formation and fractures, resulting in a skin factor. On the one hand, the embedding of proppant reduces the effective width of propped fractures, and on the other hand, it makes the formation minerals extruded and...
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IPC IPC(8): G01N15/08G01N3/10
CPCG01N3/10G01N15/082G01N2203/0003G01N2203/0017G01N2203/0044G01N2203/0062G01N2203/0256G01N2203/0641
Inventor 何春明才博段贵府修乃岭许江文窦晶晶承宁王佳高跃宾陈进姜伟李帅
Owner PETROCHINA CO LTD