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Method and system for monitoring fracturing cracks based sound waves

A fracturing and sonic technology, applied in the direction of earthwork drilling, wellbore/well components, production fluid, etc.

Active Publication Date: 2020-02-07
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, at present, the monitoring of fractures in the fracturing site has problems such as accuracy, real-time and cost control.

Method used

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  • Method and system for monitoring fracturing cracks based sound waves
  • Method and system for monitoring fracturing cracks based sound waves
  • Method and system for monitoring fracturing cracks based sound waves

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Embodiment Construction

[0032] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the embodiments of the present invention in detail with reference to the accompanying drawings.

[0033] During the fracturing construction process, it is necessary to judge the initiation and extension of underground cracks, and direct on-site operations. A correct understanding of the initiation and extension of fracturing fractures is of great significance for evaluating fracturing effects, improving fracturing stimulation effects, increasing single well productivity and ultimate recovery.

[0034] There are currently three types of fracture monitoring methods used: the first type: indirect fracture monitoring, including fracturing net pressure analysis (fracture model), well test analysis and other methods; the second type: direct near-wellbore fracture monitoring, including radioactive tracers , Temperature logging, production logging an...

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Abstract

The invention provides a method for monitoring fracturing cracks based sound waves. The method comprises the following steps of in the fracturing work process, acquiring a sound wave signal which is carried by fracturing liquid and is generated by stratum cracking and crack extension; converting the sound wave signal into an electric signal and transmitting the electric signal to an industrial control computer; and receiving the electric signal, performing acoustic analysis on the electric signal and monitoring the change condition of the fracturing cracks in real time based on the analysis result. According to the invention, the strong sound waves which are generated in the fracturing liquid during stratum cracking and crack extension in the fracturing process is utilized, the sound wavesignal is acquired and is converted into the electric signal, acoustic analysis is conducted, acoustic feature parameters are extracted, and the crack cracking and extension conditions are monitored in real time, so that the cracks can be monitored in real time in the fracturing process.

Description

Technical field [0001] The invention relates to the field of petroleum engineering, in particular to a method and system for monitoring fracturing fractures based on acoustic waves. Background technique [0002] In the process of fracturing construction in the field of oil and gas engineering, it is necessary to judge the initiation and extension of underground cracks and direct on-site operations. A correct understanding of the initiation and extension of fracturing fractures is of great significance for evaluating fracturing effects, improving fracturing stimulation effects, increasing single well productivity and ultimate recovery. However, the current fracturing site monitoring of fractures has problems such as accuracy, real-time and cost control. [0003] Therefore, the present invention provides a method and system for monitoring fractures based on acoustic waves. Summary of the invention [0004] In order to solve the above problems, the present invention provides a method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00E21B43/26
CPCE21B49/00E21B43/26
Inventor 张好林何江杨传书肖莉孙旭
Owner CHINA PETROLEUM & CHEM CORP
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