A dynamic diagnosis method of fracturing effect based on microseismic monitoring

A diagnostic method and micro-seismic technology, applied in seismic signal processing, earth-moving drilling, wellbore/well components, etc., can solve the problems of no optimization measures, the problem of confidence level, and the inability to quantitatively evaluate the change of fracture parameters, so as to achieve diagnosis. The method is simple, the interpretation results are reasonable, and the use is convenient and feasible.

Active Publication Date: 2022-07-05
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0006] 1. In the first method, the main defect is that it can only evaluate the current fracture parameters, and cannot quantitatively evaluate the changes of fracture parameters, and cannot provide fine guidance for on-site measures, and there is a large lag in the interpretation of potential or electromagnetic monitoring;
[0007] 2. In Method 2, there is a serious lag in evaluating the fracturing effect by using the flowback data, and the flowback after fracturing is restricted by various factors. has uncertainty;
[0008] 3. In the third method, there is a problem of confidence level in the application of data analysis or the establishment of semi-empirical formulas to predict fracturing effects, and there are large differences in different blocks, which have no evaluation value for new areas
This technology does not describe the change characteristics of the fracture propagation process, cannot reflect the dynamic change rate of the fracture propagation geometry and the stimulated volume, does not carry out the judgment of the actual hydraulic fracture type, and does not involve further optimization measures

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  • A dynamic diagnosis method of fracturing effect based on microseismic monitoring
  • A dynamic diagnosis method of fracturing effect based on microseismic monitoring
  • A dynamic diagnosis method of fracturing effect based on microseismic monitoring

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Embodiment 1

[0042] As the most basic embodiment of the present invention, this example discloses a method for dynamic diagnosis of fracturing effect based on microseismic monitoring, which specifically includes the following steps:

[0043]The dynamic diagnosis method of fracturing effect based on microseismic monitoring specifically includes three key methods: real-time acquisition of on-site fracturing and microseismic monitoring data, establishment of interpretation and diagnosis model based on microseismic monitoring results, and corresponding optimization measures for different diagnosis results. The technical composition, the specific steps are as follows:

[0044] S1: Real-time acquisition method steps of field fracturing and microseismic monitoring data

[0045] Fracturing starts with (hh:mm:ss,Q,μ,C s ,M,V,L f ,W f ,H f ,SRV) data format for data acquisition, where displacement (Q), liquid viscosity (μ), sand concentration (C s ), the amount of temporary plugging (M), the am...

Embodiment 2

[0056] As the best embodiment of the present invention, its steps are:

[0057] The dynamic diagnosis method of fracturing effect based on microseismic monitoring specifically includes three key methods: real-time acquisition of on-site fracturing and microseismic monitoring data, establishment of interpretation and diagnosis model based on microseismic monitoring results, and corresponding optimization measures for different diagnosis results. Technical composition, its technical characteristics are as follows:

[0058] The method for real-time acquisition of on-site fracturing and micro-seismic monitoring data mainly includes the acquisition of micro-seismic on-site interpretation results and the acquisition of fracturing construction parameters. The microseismic field monitoring and interpretation results mainly refer to the length, width and height of the fracturing fracture network (L f , W f , H f ) and reservoir stimulation volume (SRV), the series of results are all...

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Abstract

The invention discloses a method for dynamic diagnosis of fracturing effect based on microseismic monitoring, which belongs to the technical field of stimulation and reconstruction of unconventional oil and gas reservoirs. Model establishment and corresponding optimization measures for different diagnosis results; the present invention fully considers engineering factors that affect fracturing effect, uses on-site microseismic monitoring and interpretation results to draw evaluation curves based on scale and transformation effect, and forms corresponding curves according to different curve shapes. By evaluating the diagnostic model, this method can dynamically describe and diagnose the effect of on-site fracturing, which provides effective means and technical support for guiding the fracturing optimization decision and improving the effect of stimulation.

Description

technical field [0001] The invention belongs to the technical field of stimulation and reconstruction of unconventional oil and gas reservoirs, and in particular relates to a dynamic diagnosis method of fracturing effect based on microseismic monitoring. [0002] technical background [0003] The effective development of unconventional oil and gas resources is inseparable from fracturing and stimulation operations. At present, the fracturing operation of tight gas in my country, especially shale gas, is the most important for the first fracturing. Due to the limited understanding of the reservoir before fracturing, Therefore, it is of great significance to effectively diagnose and evaluate the current fracturing state during the fracturing construction process, and take appropriate optimization measures to improve the fracturing effect to improve the benefits of shale gas development. [0004] At present, the methods for evaluating or monitoring the effect of fracturing stimul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28E21B43/26E21B49/00G01V1/30G06F30/20
CPCE21B43/26E21B49/00G01V1/28G01V1/30G06F30/20
Inventor 何封张庆李彦超邓才
Owner BC P INC CHINA NAT PETROLEUM CORP
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