ANALYSIS ON OPEN HOLE STABILITY OF A DEEP GAS WELL WITH HIGH PRESSURE DURING TESTING

CHEN Jun-hai; CHEN Mian; JIN Yan

Volume 18 Issue 4

Dec. 2012

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CHEN Jun-hai, CHEN Mian, JIN Yan, 2012. ANALYSIS ON OPEN HOLE STABILITY OF A DEEP GAS WELL WITH HIGH PRESSURE DURING TESTING. Journal of Geomechanics, 18 (4): 433-439.

Citation:

CHEN Jun-hai, CHEN Mian, JIN Yan, 2012. ANALYSIS ON OPEN HOLE STABILITY OF A DEEP GAS WELL WITH HIGH PRESSURE DURING TESTING. Journal of Geomechanics, 18 (4): 433-439.

Citation:

CHEN Jun-hai, CHEN Mian, JIN Yan, 2012. ANALYSIS ON OPEN HOLE STABILITY OF A DEEP GAS WELL WITH HIGH PRESSURE DURING TESTING. Journal of Geomechanics, 18 (4): 433-439.

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ANALYSIS ON OPEN HOLE STABILITY OF A DEEP GAS WELL WITH HIGH PRESSURE DURING TESTING

1.
Sinopec Research Institute of Petroleum Engineering and Technology, Beijing 100101, China
2.
College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China

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Received: 2012-07-03
Published: 2012-12-01

Abstract

Abstract

During testing of the open hole of high pressure and deep gas well, borehole collapse may occur in open-hole sections, because borehole fluid pressure was too low to support the borehole wall. Based on stress distribution near wellbore area under non-uniform tectonic stresses, seepage stress field caused by high-pressure fluid flow through porous medium and thermal stress field due to temperature changes, and combined with the Mohr-Coulomb criterion, we can determine the well equivalent flow pressure which can prevent collapsing. In addition, it may guide density and height of fluid cushion and well control fluid, which will ensure work smoothly.
- high pressure gas well,
- non-uniform tectonic stress,
- seepage stress field,
- thermal stress field,
- testing differential pressure,
- borehole collapsing

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References(13)

References

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