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

CHEN Jun-hai; CHEN Mian; JIN Yan

2012 Vol. 18, No. 4

Article Contents

Article navigation > Journal of Geomechanics > 2012 > 18(4): 433-439

Next Article Previous Article

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

Citation:

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

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

Received Date: 03 July 2012

Publish Date: 25 December 2012

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

FullText(HTML)

References

[1]	程远方, 黄荣樽.钻井工程中泥页岩井壁稳定的力学分析[J].中国石油大学学报:自然科学版, 1993, 17(4):35~39. Google Scholar CHENG Yuan-fang, HUANG Rong-zun. Mechanical analysis of borehole stability in shale formation in drilling[J]. Journal of the University of Petroleum, China:Edition of Natural Science, 1993, 17(4):35~39. Google Scholar
[2]	刘玉石.地层坍塌压力及井壁稳定对策研究[J].岩石力学与工程学报, 2004, 23(14):2421~2423. doi: 10.3321/j.issn:1000-6915.2004.14.023 CrossRef Google Scholar LIU Yu-shi. Collapse pressure and precautions for stability of wellbore wall[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(14):2421~2423. doi: 10.3321/j.issn:1000-6915.2004.14.023 CrossRef Google Scholar
[3]	陈勉, 金衍.深井井壁稳定技术研究进展与发展趋势[J].石油钻探技术, 2005, 33(5):28~33. Google Scholar CHEN Mian, JIN Yan. Advances and developmental trend of the wall stability technique[J]. Petroleum Drilling Techniques, 2005, 33(5):28~33. Google Scholar
[4]	金衍, 陈勉, 柳贡慧, 等.大位移井的井壁稳定力学分析[J].地质力学学报, 1999, 5(1):4~11. Google Scholar JIN Yan, CHEN Mian, LIU Gong-hui, et al. Well bore stability analysis of extended reach wells[J].Journal of Geomechanics, 1999, 5(1):4~11 Google Scholar
[5]	陈勉, 金衍, 张广清.石油工程岩石力学[M].北京:科学出版社, 2008:56~58. Google Scholar CHEN Mian, JIN Yan, ZHANG Guang-qing. Rock mechanics in petroleum engineering[M]. Beijing:Science Press, 2008:56~58. Google Scholar
[6]	李志明, 殷有泉.油水井套管外挤力计算及其力学基础[M].北京:石油工业出版社, 2006:97~100. Google Scholar LI Zhi-ming, YIN You-quan. Oil and water well casing external collapse load calculation and mechanics[M]. Beijing:Petroleum Industry Press, 2006:97~100. Google Scholar
[7]	刘玉石, 周煜辉, 黄克累.井眼温度变化对井壁稳定的影响[J].石油钻采工艺, 1996, 18(4):1~4. Google Scholar LIU Yu-shi, ZHOU Yu-hui, HUANG Ke-lei. The temperature influence on borehole stability[J]. Oil Drilling & Production Technology, 1996, 18(4):1~4. Google Scholar
[8]	何湘清, 刘向君, 罗平亚.温度扰动对井壁稳定和油田开发的影响[J].天然气工业, 2003, 23(1):39~41. Google Scholar HE Xiang-qing, LIU Xiang-jun, LUO Ping-ya. Influence of temperature perturbation on borehole wall stabilization and oil field development[J]. Natural Gas Industry, 2003, 23(1):39~41. Google Scholar
[9]	蔚宝华, 王炳印, 曲从锋, 等.高温高压储层安全钻井液密度窗口确定技术[J].石油钻采工艺, 2005, 27(3):31~37. Google Scholar YU Bao-hua, WANG Bing-yin, QU Cong-feng, et al. Mud density determination of HT/HP reservoir formation[J]. Oil Drilling & Production Technology, 2005, 27(3):31~37. Google Scholar
[10]	杨秀夫, 刘希圣.地层孔隙压力对井壁附近应力分布的影响[J].中国石油大学学报:自然科学版, 1997, 21(5):27~29, 34, 115. Google Scholar YANG Xiu-fu, LIU Xi-sheng. Influence of pore pressure on stresses distribution around a borehole[J]. Journal of the University of Petroleum, China:Natural Science Edition, 1997, 21(5):27~29, 34, 115. Google Scholar
[11]	Fjaer E, Holt R M, Sorsrud P, et al. Petroleum related rock mechanics[M]. 2^nd Edition. Amsterdam:Elsevier Science Publishing Company Inc., 1992:109~120. Google Scholar
[12]	吴家龙.弹性力学[M].北京:高等教育出版社, 2004:152~153. Google Scholar WU Jia-long. Elasticity[M]. Beijing:Higher Education Press, 2004:152~153. Google Scholar
[13]	Wu B, Tan C P. Sand production prediction of gas field-methodology and field application[C]//Society of Petroleum Engineers. Papers of SPE/ISRM Rock Mechanics Conference. Perth:Society of Petroleum Engineers Inc., 2002:78234~MS. Google Scholar