MICRO-EARTHQUAKES IN THE SHIZIGOU OILFIELD, QINGHAI, AND THEIR GEOLOGICAL SIGNIFICANCE

FENG Mei; AN Mei-jian; WANG Xiao-feng; MA Yin-sheng; JIANG Rong-bao; LI Li

2007 Vol. 13, No. 2

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FENG Mei, AN Mei-jian, WANG Xiao-feng, MA Yin-sheng, JIANG Rong-bao, LI Li. MICRO-EARTHQUAKES IN THE SHIZIGOU OILFIELD, QINGHAI, AND THEIR GEOLOGICAL SIGNIFICANCE[J]. Journal of Geomechanics, 2007, 13(2): 173-178, 172.

Citation:

FENG Mei, AN Mei-jian, WANG Xiao-feng, MA Yin-sheng, JIANG Rong-bao, LI Li. MICRO-EARTHQUAKES IN THE SHIZIGOU OILFIELD, QINGHAI, AND THEIR GEOLOGICAL SIGNIFICANCE[J]. Journal of Geomechanics, 2007, 13(2): 173-178, 172.

MICRO-EARTHQUAKES IN THE SHIZIGOU OILFIELD, QINGHAI, AND THEIR GEOLOGICAL SIGNIFICANCE

Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China

Received Date: 23 November 2006

Publish Date: 25 June 2007

Abstract

Abstract

A large number of high-quality seismic data are recorded in the Shizigou oilfield of the western Qaidam basin by monitoring micro-earthquakes for more than one year.After processing and analyzing these data, the authors find that micro-earthquakes occur relatively frequently in the study area and are mainly concentrated at ~2 km depth on the NE side of the NW-trending Huatugou fault in the basinmountain transition zone of the area.Analyses of the relation between earthquakes and oil well distribution and the slope b in the linear relation between log frequency and magnitude show that microearthquakes in the study area are mainly related to the Huatugou fault and its secondary structures though fluid injection through the wells has a certain microearthquake-inducing effect in the area.
- micro-earthquake /
- fault activity /
- Shizigou oilfield /
- western Qaidam basin

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References

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