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Volume fracturing horizontal well pressure dynamic analyzing method and device

A technology of volume fracturing and analysis methods, which is applied in the fields of fluid production, earthwork drilling, wellbore/well components, etc., can solve the problems of inaccurate dynamic analysis of volume fracturing horizontal well pressure, large amount of calculation, etc., to reduce the calculation quantity, and the effect of improving accuracy

Active Publication Date: 2018-04-20
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

However, this method requires a large amount of calculation, and requires a solid theoretical foundation and a large amount of practical experience to be basically realized.
Moreover, this method needs to obtain accurate fracture distribution information of volume fracturing horizontal wells. However, in the prior art, the microseismic monitoring information with the highest resolution is usually difficult to provide high-precision fracture system distribution information, which will lead to volume fracturing. Inaccurate pressure dynamic analysis of fractured horizontal wells

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  • Volume fracturing horizontal well pressure dynamic analyzing method and device
  • Volume fracturing horizontal well pressure dynamic analyzing method and device
  • Volume fracturing horizontal well pressure dynamic analyzing method and device

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Embodiment Construction

[0056] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described The embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of this application.

[0057] The formulas in the various embodiments provided in this application are only one embodiment, and the various formulas can also be modified or transformed as needed, and this application does not make specific limitations.

[0058] figure 1 It is a schematic diagram of the method flow of an embodiment of a volume fracturing horizontal well pressur...

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Abstract

The invention provides a volume fracturing horizontal well pressure dynamic analyzing method and device. The volume fracturing horizontal well pressure dynamic analyzing method comprises the steps that a double-medium model corresponding to a to-be-analyzed well section is built through a fractal theory; according to the double-medium model, a pressure dynamic model of the to-be-analyzed well section is built through a fractional order calculus method; and according to the pressure dynamic model, pressure dynamic analysis is conducted on the to-be-analyzed well section. By utilizing all embodiments in the invention, through the fractal theory and the fractional order calculus method, the pressure dynamic model of the to-be-analyzed well section is built, the to-be-analyzed well section canbe solved through a semi analytical method, the solution of the pressure dynamic model can be rapidly and accurately obtained, and the accurate data foundation is provided for subsequent pressure dynamic analysis of the to-be-analyzed well section. The accuracy of the analyzed results is improved while the calculated amount of horizontal well pressure dynamic analysis is reduced.

Description

Technical field [0001] The application belongs to the technical field of oil and gas well testing, and in particular relates to a pressure dynamic analysis method and device for volumetric fractured horizontal wells. Background technique [0002] As one of the three major unconventional natural gas, tight gas has abundant resources and great development potential. It will become an important resource for the rapid and stable development of my country's natural gas industry. Tight gas generally occurs in tight reservoirs under special conditions such as low porosity, low permeability and low pressure. The natural production capacity of gas wells is low. The development of only horizontal wells and conventional fracturing technology often does not have industrial production value, so it must be studied Adopt new large-scale fracturing technology. The volumetric fracturing technology has formed vertical and horizontal "network fractures" with main fractures as the backbone, increas...

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Application Information

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IPC IPC(8): E21B43/26G06F17/50
CPCE21B43/26G06F30/20
Inventor 田冷高星星顾岱鸿董俊林朱贤峰
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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