Device for monitoring fracturing effect of micro-earthquakes and monitoring method with device
A micro-seismic and equipment technology, applied in geophysical measurement, instruments, etc., can solve the problems of complex and variable geological conditions, inaccurate data acquisition, and unsatisfactory results, so as to improve monitoring effects, reduce measurement errors, Effect of reducing the influence of external noise
Active Publication Date: 2015-03-25
SICHUAN SHENGNUO OIL & GAS ENG TECH SERVICE CO LTD
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[0003] However, due to the complexity and variability of geological conditions, especially the ground noise and other noises have a greater impact on the monitored data, the equipment in the prior art cannot accurately obtain the data obtained from microseismic crack monitoring, and the effect is not ideal.
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[0023] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
[0024] Such as figure 1 As shown, a device for microseismic monitoring of fracturing effects, including a central control system 1 and a dynamic monitoring component connected to the central control system 1, a static monitoring component, a gamma tester 10 and a display screen 2, the dynamic monitoring The assembly includes a number of first geophones 3, a number of second geophones 4 and casing pipes 8 equal in number to the second geophones 4. Each first geophone 3 is uniformly arranged in the monitoring well 9 from top to bottom. Both detectors 4 are arranged above the bushing 8, and one second detector 4 corresponds to one bushing 8, the first detector 3...
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The invention relates to a device for monitoring the fracturing effect of micro-earthquakes. The device comprises a central control system, a dynamic monitoring assembly, a static monitoring assembly, a gamma testing instrument and a display screen. The dynamic monitoring assembly comprises a plurality of first detectors, a plurality of second detectors and casing pipes, wherein the number of the second detectors is equal to the number of the casing pipes. The static monitoring assembly comprises an ultrasonic transmitting device and an ultrasonic receiving device. A monitoring method with the device for monitoring the fracturing effect of the micro-earthquakes comprises the steps of model establishing, first gamma logging, dynamic monitoring, static monitoring, second gamma monitoring, data calculating and graph simulating. According to the device for monitoring the fracturing effect of micro-earthquakes and the monitoring method with the device, micro-earthquake events are monitored in a dynamic mode and a static mode, a gamma logging technology is combined, the three-component detectors are used for conducting component monitoring and calculating on micro-earthquake signals, measuring errors are reduced, the accuracy of data monitoring is improved, the monitoring effect is improved, and the device and the monitoring method are suitable for popularization.
Description
technical field [0001] The invention relates to the field of oil and gas field development, in particular to a device for microseismic monitoring of fracturing effects and a monitoring method thereof. Background technique [0002] The hydraulic fracturing fracture monitoring of shale gas wells commonly used abroad mainly includes direct near-wellbore fracture monitoring, downhole microseismic monitoring methods, inclinometer monitoring and distributed acoustic sensing fracture monitoring. The monitoring capabilities and adaptability of these fracture monitoring methods are compared and analyzed. Among these fracturing monitoring technologies, the near-wellbore fracture monitoring technology is only used as a supplementary technology. Downhole microseismic fracture monitoring is currently the most widely used and most accurate method. [0003] However, due to the complexity and variability of geological conditions, especially ground noise and other noises have a great influen...
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Inventor 王长春钟传蓉杨晨王秀宇李睿男王彦升李权刘天洋
Owner SICHUAN SHENGNUO OIL & GAS ENG TECH SERVICE CO LTD