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Fracture interpretation method based on fracturing tracer flowback curve

A tracer and curve technology, which is applied in the fields of architecture, design optimization/simulation, and special data processing applications, etc., can solve the problems that cannot be quantitatively described, artificial crack analysis, etc., and achieve the effect of convenient application and small error

Pending Publication Date: 2022-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent can only qualitatively judge whether the fractures and caves in the formation are cracks or caves, and cannot describe them quantitatively. Moreover, it only divides natural fractures and does not analyze artificial fractures.

Method used

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  • Fracture interpretation method based on fracturing tracer flowback curve
  • Fracture interpretation method based on fracturing tracer flowback curve
  • Fracture interpretation method based on fracturing tracer flowback curve

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Embodiment Construction

[0064] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0065] It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations and / or combinations thereof.

[0066] Such as figure 1 as shown, figure 1 It is a flow chart of the fracture interpretation method based on the fracturing tracer flowback curve of the ...

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Abstract

The invention provides a fracture interpretation method based on a fracturing tracer flowback curve. The fracture interpretation method comprises the steps that 1, flowback curve characteristic theoretical interpretation under different fracture conditions is established; step 2, establishing a mathematical model representing a double-wing seam / composite seam, and establishing a one-to-one correspondence relationship between a flowback curve and a crack characteristic; 3, performing inversion fitting analysis by using the established double-wing seam / composite seam mathematical model and the actual flow-back curve to obtain crack parameters; and 4, establishing a fracture interpretation method based on the fracturing tracer flowback curve, and applying the fracture interpretation method to fracture analysis of an actual fracturing tracer flowback curve. According to the fracture interpretation method based on the fracturing tracer flowback curve, for tracer flowback concentration curves of different fractured wells, fracture forms, fracture parameters and the like can be obtained, errors are small, application is convenient, and the fracture interpretation method has an important guiding effect on follow-up fracturing work of similar well layers.

Description

technical field [0001] The invention relates to the field of exploration and development of oil and natural gas, in particular to a fracture interpretation method based on flowback curves of fracturing tracers. Background technique [0002] Multi-stage fracturing is widely used in the development of tight oil and gas and shale oil and gas. In field practice, the fine description of the fracture network formed after fracturing has become a difficult problem in the development of tight oil reservoirs and even other unconventional oil and gas resources. Effect evaluation after fracturing and the accuracy of predicting production behavior. [0003] In multi-stage fracturing operations, different tracers are usually injected into the fracturing fluid step by step to inject into different fracturing intervals, and the tracers enter the fractures together with the fracturing fluid to seep. After the fracturing construction is completed, the tracer will flow back along with the fra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20E21B47/11
CPCG06F30/20
Inventor 陈凯李晓倩张燎源张超宋李煜丁然杨峰黄波郁登朗陈培胜
Owner CHINA PETROLEUM & CHEM CORP
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