Mining area hydrofracture crack microseism monitoring application method

A technology of hydraulic fracturing and application method, applied in seismology, geophysical measurement, seismic signal processing, etc., can solve problems such as inability to accurately describe the length, width and reference height of fracture contour, inconvenient analysis of overall fracturing effect, etc. , to achieve the effect of optimizing the fracturing plan

Inactive Publication Date: 2020-03-27
SHANDONG PROVINCIAL COAL GEOLOGICAL PLANNING EXPLORATION & RES INST
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  • Application Information

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Problems solved by technology

At present, many hydraulic fracturing fracture monitoring methods in mining areas cannot accurately describe the length, width and reference height of the fracture profile, and the overall fracturing effect analysis is inconvenient.

Method used

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  • Mining area hydrofracture crack microseism monitoring application method
  • Mining area hydrofracture crack microseism monitoring application method
  • Mining area hydrofracture crack microseism monitoring application method

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0020] Refer to the attached Figure 1-5 Describe the application method of microseismic monitoring of hydraulic fracturing fractures in mining areas according to an embodiment of the present invention, including the following steps: S1: arranging monitoring equipment; figure 1 As shown, the monitoring equipment is a three-component microseismic monitoring and acquisition instrument. The equipment layout adopts the wellhead as the center, and the five-star layout and the two-ring layout are combined to arrange the monitoring stations. The five-star layout is to set the monitoring equipment at the wellhead. And along the five lines radially radiating outward from the ...

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Abstract

The invention belongs to the technical field of mining area microseism monitoring, and particularly relates to a mining area hydrofracture crack microseism monitoring application method. The method comprises the following steps: arranging amonitoring equipment; monitoring equipment being WTADC-3 three-component microseism monitoring acquisition instrument, and the equipment being arranged in a five-star and two-ring mode with a wellhead as the center, and arranging a monitoring station. According to the invention, high-sensitivity seismic sensors are distributed in shallow wells around a fractured well to carry out micro-seismic monitoring. Three-component data of the microseism is used. Seismic source space positioning is carried out according to the microseism travel time. The energy distribution conditions of a one-dimensional time domain and a three-dimensional space are obtained, a microseism event top view, a microseism event side view and a microseism event front view are drawn,crack imaging characteristics of a fracturing area are obtained, the length, the width and the reference height of a crack contour can be accurately described, the overall fracturing effect can be evaluated, and a fracturing scheme can be optimized and perfected.

Description

technical field [0001] The invention relates to the technical field of microseismic monitoring in mining areas, in particular to an application method for microseismic monitoring of hydraulic fracturing fractures in mining areas. Background technique [0002] Hydraulic fracturing is the main means of increasing production of coalbed methane wells at home and abroad. Microseismic fracture monitoring, as a key supporting technology for coalbed methane reservoir fracturing, plays a vital role in optimizing and adjusting fracturing schemes, avoiding fracturing risks, and guiding later-stage mining. important role. As the most accurate and abundant information, microseismic fracture monitoring technology is superior to conventional monitoring technology. Previous studies have focused on source fracture characteristics, fracturing effect evaluation, reservoir evaluation, mathematical models, fracture imaging methods, and downhole monitoring of segmental pressure in horizontal well...

Claims

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Application Information

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IPC IPC(8): G01V1/28
CPCG01V1/288
Inventor 邵玉宝朱裕振沈立军李强崔凯孙超张心彬高志军刘雪
Owner SHANDONG PROVINCIAL COAL GEOLOGICAL PLANNING EXPLORATION & RES INST
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