Long-period long-duration seismic events during hydraulic fracturing: Implications for tensile fracture development

被引：17

作者：

Hu, Hongru ^{[1
]}

Li, Aibing ^{[1
]}

Zavala-Torres, Ricardo ^{[2
]}

机构：

[1] Univ Houston, Dept Earth & Atmospher Sci, Houston, TX USA

[2] Pemex Explorat & Prod, Mexico City, DF, Mexico

来源：

GEOPHYSICAL RESEARCH LETTERS | 2017年 / 44卷 / 10期

关键词：

TIGHT-GAS RESERVOIRS; FLUID-DRIVEN CRACK; SOURCE MECHANISM; VOLCANIC TREMOR; STIMULATION; SUBDUCTION; RESONANCE; ERUPTION; SHALE;

D O I：

10.1002/2017GL073582

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Long-period long-duration (LPLD) seismic events are observed from a microseismic data set acquired by surface receivers in the Eagle Ford Shale. These events are characterized by low frequencies of 10-60 Hz and long durations of 30-60 s. The seismograms are dominated with P waves, and the frequency spectra have peaks at several isolated frequencies, similar to volcanic tremors. The LPLD events are located close to the horizontal hydraulic treatment well and migrate away from the well with time. These observations suggest that the LPLD events are related to hydraulic fracturing and are possibly caused by the jerky opening and resonance of fluid-filled cracks. Imaging this type of LPLD events can potentially map fluid flow and tensile fracture development during hydraulic fracturing.

引用

页码：4814 / 4819

页数：6

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