scholarly journals Reliability of In Situ Stress Due to Similarity of Crack Orientation in Hydraulic Fracturing Stress Measurement.

1996 ◽  
Vol 62 (603) ◽  
pp. 2561-2566 ◽  
Author(s):  
Kazuo HAYASHI ◽  
Akira SATO ◽  
Takatoshi ITO
Keyword(s):  
Hydraulic Fracturing ◽  
Stress Measurement ◽  
In Situ Stress ◽  
Crack Orientation

The Application of Hydraulic Fracturing in Storage Projects of Liquefied Petroleum Gas

2006 ◽  
Vol 306-308 ◽  
pp. 1509-1514 ◽  
Author(s):  
Jing Feng ◽  
Qian Sheng ◽  
Chao Wen Luo ◽  
Jing Zeng
Keyword(s):  
Rock Mass ◽  
Hydraulic Fracturing ◽  
Stress Measurement ◽  
Test Procedure ◽  
In Situ Stress ◽  
Test System ◽  
Petroleum Engineering ◽  
Liquefied Petroleum Gas

It is very important to study the pristine stress field in Civil, Mining, Petroleum engineering as well as in Geology, Geophysics, and Seismology. There are various methods of determination of in-situ stress in rock mass. However, hydraulic fracturing techniques is the most convenient method to determine and interpret the test results. Based on an hydraulic fracturing stress measurement campaign at an underground liquefied petroleum gas storage project which locates in ZhuHai, China, this paper briefly describes the various uses of stress measurement, details of hydraulic fracturing test system, test procedure adopted and the concept of hydraulic fracturing in arriving at the in-situ stresses of the rock mass.

Integrated Application of Three In Situ Stress Measurement Techniques

2011 ◽  
Vol 301-303 ◽  
pp. 949-953
Author(s):  
Yuan Li ◽  
Lan Qiao ◽  
Zhi Li Sui
Keyword(s):  
Acoustic Emission ◽  
Hydraulic Fracturing ◽  
Stress Measurement ◽  
Stress Relief ◽  
In Situ Stress ◽  
In Situ Stresses ◽  
In Situ Stress Measurement ◽  
Iron Mine ◽  
Acoustic Emission Test

The CSIRO overcoring stress relief and hydraulic fracturing methods are the most popular methods used for the measurement of in-situ stress at depth. One major advantage of the CSIRO overcoring stress relief method is that the three dimensional state of stress can be obtained, but the measurement must be done in an excavated tunnel[1]. Hydraulic fracturing method can be carried out on the ground surface, but it assumed that one of the principal stresses direction is vertical[2,3]. In terms of the disadvantages of the two methods, the techniques based on core orientation and acoustic emission behavior of rocks are incorporated in the in-situ stress measurement in order to obtain the in-situ stress conditions at depth in Shuichang Iron Mine. According to the comparison of the measurement data obtained from the acoustic emission test in the laboratory and CSIRO overcoring stress relief measurement in the field, effectiveness of the acoustic emission test is confirmed. In addition, the relationships between in-situ stresses and tectonic settings are analyzed. Finally, the distribution of in-situ stresses in Shuichang Iron Mine is given, which provides a meaningful guideline for the following mining and design.

A Seismic Evidence for the Reliability of the 3-D Stress Measurement by Hydraulic Fracturing

2014 ◽  
Vol 501-504 ◽  
pp. 307-311
Author(s):  
Jun Shan Xu
Keyword(s):  
Maximum Principle ◽  
Hydraulic Fracturing ◽  
Measurement Method ◽  
Stress Measurement ◽  
Three Dimensional ◽  
Wall Rock ◽  
In Situ Stress ◽  
Western China ◽  
The Maximum Principle

Determining the in-situ stress of wall rock is important for the underground cavern project. The three-dimensional (3-D) stress measurement, which is obtained by hydraulic fracturing stress measurement via measuring the stresses in boreholes with three different orientations, has been applied for the designation of cavern project. However, there are few examples that can demonstrate the reliability of 3-D stress measurement method. In this study, we showed one example of the 3-D stress results measured by hydraulic fracturing in Western China. The measured results, especially the dip angles of the maximum principle stress are consistent with those determined by focal mechanism of nearby earthquakes. This consistence indicates the reliability of the 3-D stress results by hydraulic fracturing and an expected application for regional geostress study.

Study on Hydraulic Fracturing Method for In Situ Stress Measurement in Deep Boreholes

2015 ◽  
Vol 741 ◽  
pp. 567-571
Author(s):  
Yan Xin Zhang ◽  
Chang Sheng Song ◽  
Jian Hui Zhao
Keyword(s):  
Stress Field ◽  
Hydraulic Fracturing ◽  
Stress Measurement ◽  
Stress Test ◽  
In Situ Stress ◽  
Time Curve ◽  
Pressure Time ◽  
Deep Boreholes ◽  
In Situ Stress Field

Information of in situ stress field is crucial for predicting the response of rock masses to the disturbance associated with underground constructions. Hydraulic fracturing is an efficient method for determining the stress field and is suitable at the early stages of projects when no underground access exists. For this, a series of new improved techniques and equipments are developed for the deep boreholes to increase the reliability of system. For a better understanding of the stress test, the ideal HF pressure-time curve is given and the fracturing procedure is analyzed. Based on the theory of HF stress calculation, two implicit inequations are deduced.

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