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A monitoring method using a microseismic monitoring system for oil layer fire flooding front

A technology for fire-flooding front and microseismic monitoring, which is applied to seismology, seismology, and measuring devices for logging records, can solve the problems of difficulty in acquiring microseismic wave velocity spectrum, large attenuation of microseismic signal transmission, and signal processing technology. It can reduce blindness, improve signal recognition, and reduce the effect of transmission attenuation.

Active Publication Date: 2019-06-21
克拉玛依市海晟达石油科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problems to be solved by the present invention are: the existing microseismic monitoring system has a simple layout, low density of geophones, great influence by the environment, difficulty in obtaining effective microseismic wave velocity spectrum, poor signal processing technology, large attenuation of microseismic signal transmission, etc. Seriously affect the monitoring effect

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  • A monitoring method using a microseismic monitoring system for oil layer fire flooding front
  • A monitoring method using a microseismic monitoring system for oil layer fire flooding front
  • A monitoring method using a microseismic monitoring system for oil layer fire flooding front

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Embodiment 1

[0023] Such as figure 1 As shown in the present invention, a kind of megaseismic monitoring system for oil layer fire flooding front, the monitoring system includes: downhole detection module, shallow surface detection module, ground detection module, central processing module; described downhole detection module, shallow surface detection module The detection module and the ground detection module are respectively connected to the central processing module; preferably, the ground detection module includes: a ground data collection station, a detector, and a GPS signal receiving antenna; the detector is connected to the ground data collection station; the ground data collection station It is connected with the central processing module; the GPS signal receiving antenna receives the GPS clock signal returned by the downhole detection module.

[0024] The downhole detection module is used to detect the microseismic signals that occur in the process of gas injection and fire floo...

Embodiment 2

[0038] Such as figure 2 As shown, the present invention also relates to a method for microseismic monitoring of an oil reservoir fire flooding front, the method comprising the steps of:

[0039] S1, the three modules of ground detection module, shallow surface detection module and downhole detection module simultaneously monitor the microseismic signal, and transmit the microseismic signal data to the ground data acquisition station;

[0040] S2, the central processing module receives all the micro-seismic signal data in the ground data acquisition station, and processes all the micro-seismic signal data;

[0041] S3. According to the average velocity and propagation distance of the seismic wave obtained by the downhole geophone, the velocity model is output by forward modeling, and the P wave velocity model is further established according to the drilling acoustic wave time difference logging data in the monitoring area, and the two are combined and corrected to establish th...

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Abstract

The invention relates to an oil layer fireflood front end micro-seismic monitoring system and an oil layer fireflood front end micro-seismic monitoring method. The monitoring system comprises an underground detection module, a shallow surface detection module, and a ground detection module, which are respectively connected with a central processing module. The invention further relates to a method. The method comprises the following steps: the ground / shallow surface / underground detection modules monitor micro-seismic signals at the same time and transmit micro-seismic signal data to a ground data collection station; and the central processing module receives all micro-seismic signal data in the ground data collection station and processes all micro-seismic signal data to obtain a micro-seismic distribution range and a generation time. By adoption of the oil layer fireflood front end micro-seismic monitoring system and method provided by the invention, monitoring areas can be reasonably designed, the micro-seismic signals are accurately monitored, in addition, the system is convenient to implement, high in monitoring precision, good in use effect, and is able to perform long-term effective monitoring and perform comparison and analysis by using monitoring data before and after micro-seismic.

Description

technical field [0001] The invention relates to the technical field of microseismic monitoring in the thermal recovery of heavy oil, in particular to a monitoring method using a microseismic monitoring system for an oil layer fire flooding front. Background technique [0002] There is no effective monitoring system for the existing monitoring of burning oil layers, and most of them use observation well temperature / pressure testing or tracer testing for monitoring. Some oil fields have also carried out microseismic monitoring tests. Microseismic detection technology is the development and application of signal processing technology and digital technology in the exploration and development of oil and gas fields. Experimental research has been carried out in university laboratories and mineral deposit laboratories in the United States, Canada, Australia, the United Kingdom, Poland and other countries, and certain results have been achieved. . Domestic research began in the la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/20G01V1/22G01V1/50
CPCG01V1/20G01V1/226G01V1/50G01V2210/614G01V2210/6169
Inventor 崔海鹰
Owner 克拉玛依市海晟达石油科技有限公司
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