Method and system used for predicting initial productivity after shale formation fracturing

A post-fracturing and formation fracturing technology, applied in prediction, data processing applications, instruments, etc., can solve problems such as high cost, inability to quickly and effectively determine shale gas production capacity, and low development efficiency, so as to improve development efficiency and reduce exploration costs. Development costs, simplification affect the effect of parameters

Active Publication Date: 2017-12-08
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0005] However, the above productivity evaluation methods are high in cost, low in development efficiency, and cannot quickly and effectively determine shale gas productivity

Method used

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  • Method and system used for predicting initial productivity after shale formation fracturing
  • Method and system used for predicting initial productivity after shale formation fracturing
  • Method and system used for predicting initial productivity after shale formation fracturing

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Embodiment Construction

[0048] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples, so as to fully understand and implement the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects. It should be noted that, as long as there is no conflict, each embodiment of the present invention and each feature of each embodiment can be combined with each other, and the formed technical solutions all fall within the protection scope of the present invention.

[0049] like figure 1 Shown is a flow chart of a method for predicting the initial production capacity of a shale formation after fracturing according to an embodiment of the present invention, the following reference is made to figure 1 The present invention will be described in detail.

[0050] The first step is to establish a productivity model in step S110, establishing an initial productivity mod...

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Abstract

The invention discloses a method and a system used for predicting initial productivity after shale formation fracturing. The method includes: a productivity model establishment step, wherein a model of the initial productivity after shale formation fracturing is established according to geological sweet-spot parameters and engineering sweet-spot parameters; and an initial-productivity determination step, wherein the initial productivity after shale formation fracturing is determined according to the model of the initial productivity. According to the method, quickly predicting the initial production productivity of a shale gas well after fracturing is completed is facilitated, influence parameters of the initial productivity after shale formation fracturing are simplified, exploration and development costs of a shale gas formation are reduced, and development efficiency of the shale formation is improved.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploration and development, and in particular relates to a method and a system for predicting the initial productivity of shale formation after fracturing. Background technique [0002] Shale formations are usually ultra-low porosity and ultra-low permeability formations. The initial productivity after fracturing is not only affected by the geological conditions of the formation, such as physical properties, gas content and kerogen, but also by the scale of fracturing and the formation after fracturing. The effects of property changes, such as the total fluid volume pumped into the formation during fracturing, proppant properties, and formation brittleness. [0003] At present, the evaluation methods of shale gas productivity include empirical method, analytical method and numerical simulation method. Based on the three-porosity and double-permeability medium model of shale gas reservoirs (the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 廖东良刘双莲李永杰张元春刘江涛
Owner CHINA PETROLEUM & CHEM CORP
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