Shale oil productivity prediction method and device considering bedding development
A shale oil and shale technology, which is applied in the field of shale oil production capacity prediction considering the development of bedding, can solve the problems of insufficient research and achieve the effect of accurate production capacity prediction
Pending Publication Date: 2022-01-25
CHINA PETROLEUM & CHEM CORP
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Problems solved by technology
Although vertical heterogeneity and channeling issues have been extensively studied, analytical / semi-analytical methods that consider both vertical bedding heterogeneity and lateral reservoir stimulated volume heterogeneity have not been studied. insufficient
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[0071] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the The specific implementation manners described are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.
[0072] figure 1 A schematic flowchart of a method for predicting shale oil production capacity considering bedding development according to an embodiment of the present application is schematically shown. Such as fi...
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The embodiment of the invention provides a shale oil productivity prediction method and device considering bedding development. The method comprises the steps: obtaining prediction parameters used for predicting the productivity of the shale oil horizontal well; determining the transverse fracture density of the shale reservoir, the permeability and porosity of a fracture network and a vertical bedding fluid channeling coefficient so as to construct a corresponding oil reservoir fracturing horizontal well seepage model; obtaining a seepage model, and solving seepage equations corresponding to all areas of shale, so that a productivity curve of the shale oil fractured horizontal well representing bedding vertical flow is obtained, wherein the areas comprise an external reservoir, an internal reservoir matrix, internal reservoir fractures and hydraulic fracturing fractures; and determining the productivity of the shale oil according to the prediction parameters and the productivity curve. According to the technical scheme, a brand-new semi-analytical model is constructed to describe the heterogeneity of the reservoir transformation volume in the vertical and horizontal directions after shale oil horizontal well volume fracturing, and prediction of the shale oil horizontal well productivity is accurately achieved.
Description
technical field [0001] This application relates to the technical fields of petroleum engineering and oil and gas field development engineering, and specifically relates to a method and device for predicting shale oil production capacity considering bedding development. Background technique [0002] In scientific research in the field of petroleum engineering and oil and gas field development engineering technology, due to the extremely low permeability and porosity of shale formations, it is difficult for shale oil to flow. The development of hydraulic fracturing technology, which effectively connects natural fractures and hydraulic fractures, has made the commercial development of shale oil possible. After hydraulic fracturing, layered fractures, bedding fractures, and interlayer fractures interweave to form a spatially heterogeneous fracture network. Mathematical modeling and characterization of bedding development is extremely difficult. There is currently no model that...
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Login to View More IPC IPC(8): G06Q10/04G06Q50/02
CPCG06Q10/04G06Q50/02
Inventor 王文东李萌孙庆豪杨勇曹小朋刘祖鹏苏玉亮郝永卯李蕾
Owner CHINA PETROLEUM & CHEM CORP