Method for increasing fracture stimulated reservoir volume of shale gas
A technology for transforming volume and shale gas. It is applied in the fields of fluid production, earth-moving drilling, wellbore/well components, etc. It can solve the problems of low fracture complexity, difficulty in generating network fractures or volumetric fractures, etc., and improve fracture conductivity. flow capacity, the effect of increasing the volume
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[0023] The present invention will be further described below.
[0024] In order to solve the problem that it is difficult to generate network fractures or volume fractures after shale gas fracturing, the present invention provides a method for increasing the volume of fracture stimulation in shale gas, which effectively solves the difficulty of crack initiation, single fracture shape, and the complexity of fractures. low level problems. The present invention effectively solves the above-mentioned problems by finely analyzing and evaluating the brittleness index of shale, selecting reasonable perforation parameters, conducting induction test fracturing for each section of the horizontal well, controlling the net pressure of the main fracture and adding diverting agent in the fracture. . Specific steps are as follows:
[0025] (1) Fine analysis and evaluation of shale brittleness index
[0026] The mineral composition of shale is mainly divided into three types: silicate rock...
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