The Influence of Cement Sheath Loss on Multi-layer Casing Stress in High Temperature and High Pressure Wells

doi:10.11885/j.issn.1674-5086.2021.12.21.01

Abstract

Abstract: Due to the complex cementing conditions in high temperature and high-pressure wells, there will be a loss between casing and cement sheath, resulting in casing damage and major accidents, especially in the case of the multi-layer casing. Taking a high-temperature high pressure and high quantity gas well in the southern margin of Junggar Basin as the research object, Based on the finite element principle and method of nonlinear contact problem of the discontinuous medium, the axisymmetric finite element model of casing cement sheath loss casing cement sheath casing formation is established by using ANSYS finite element analysis software, In this model, the hydrostatic fluid element is used at the missing part of the cement sheath, the Extended Drucker Prager constitutive model is used for the rock and cement sheath, and the contact mechanics finite element model is used for all the interfaces. The research results show that: the newly established finite element of cement sheath loss can accurately analyze the stress of cement sheath loss casing under complex conditions, and solve the problems of fluid-solid coupling at the cement sheath loss where the previous model can not simulate; when there is the annular loss between Casing and cement sheath, The maximum stress occurs near the interface where the cement sheath is missing. The lack of cement sheath and the nature of the liquid have a great impact on the casing. In deep and ultra-deep wells, it is recommended to optimize the return height of the cement sheath so that the cement sheath does not return to the wellhead, reduce the length of cementing section, eliminate the problem of cement sheath loss and ensure its wellbore integrity. In addition, maintaining reasonable internal pressure during mining is also one of the effective measures to prevent and control cement sheath loss.

Key words: absence of cement sheath, casing damage, finite element, hydrostatic fluid element, cementing quality

CLC Number:

TE256

SONG Lin, SHU Zhenhui, WU Yanxian, LIAN Zhanghua, SHI Junlin. The Influence of Cement Sheath Loss on Multi-layer Casing Stress in High Temperature and High Pressure Wells[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2024, 46(1): 170-178.

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References

[1] 彭泉霖，何世明，章景城，等. 水泥环缺陷对套管强度影响研究现状及展望[J]. 钻采工艺， 2015， 38(4):35-37. doi:10.3969/J.ISSN.1006-768X.2015.04.10 PENG Quanlin, HE Shiming, ZHANG Jingcheng, et al. Research on the influence of defective cement ring on casing strength[J]. Drilling & Production Technology, 2015, 38(4): 35–37. doi: 10.3969/J.ISSN.1006-768X.2015.04.10
[2] 敬俊，单鸿斌，祝效华，等. 交变热载荷下水泥环缺陷对储气库井储层段套管的影响[J]. 断块油气田， 2023， 30(4):685-691， 697. doi:10.6056/dkyqt202304022 JING Jun, SHAN Hongbin, ZHU Xiaohua, et al. Impact of cement sheath defects on casing in the reservoir section of gas storage well under alternating thermal load[J]. FaultBlock Oil and Gas Field, 2023, 30(4): 685–691， 697. doi: 10.6056/dkyqt202304022
[3] 曹畅，周香玲，石立华. 固井水泥环缺陷与套管承载能力关系研究[J]. 混凝土与水泥制品， 2011(12):32-34. doi:10.3969/j.issn.1000-4637.2011.12.008 CAO Chang, ZHOU Xiangling, SHI Lihua. Research on relationship between sheath defect of well cementing and bearing capacity of casing[J]. China Concrete and Cement Products, 2011(12): 32–34. doi: 10.3969/j.issn.1000-4637.2011.12.008
[4] 黄祥峰，张光明，曹畅，等. 水泥环性质对套管强度影响的有限元分析[J]. 天然气与石油， 2012， 30(4):50-53. doi:10.3969/j.issn.1006-5539.2012.04.014 HUANG Xiangfeng, ZHANG Guangming, CAO Chang, et al. Finite element analysis on effect of cement sheath property on casing strength[J]. Natural Gas and Oil, 2012, 30(4): 50–53. doi: 10.3969/j.issn.1006-5539.2012.04.014
[5] 庞秉谦，杨松，窦益华，等. 套管磨损与水泥环缺陷位置对套管应力的影响[J]. 石油机械， 2009， 37(10):1-3. PANG Bingqian, YANG Song, DOU Yihua, et al. The effect of casing abrasion and cement sheath's defect position on casing stress[J]. China Petroleum Machinery, 2009, 37(10): 1–3.
[6] 邹阿七，牟哲林，刘刚. 水泥环对套管抗内压强度的影响研究[J]. 科学技术与工程，2012，12(34):9328-9332. doi:10.3969/j.issn.1671-1815.2012.34.042 ZOU Aqi, MOU Zhelin, LIU Gang. Study on influence of cement loop on casing internal pressure strength[J]. Science Technology and Engineering, 2012, 12(34): 9328-9332. doi: 10.3969/j.issn.1671-1815.2012.34.042
[7] 于浩，练章华，林铁军. 油田固井质量对套管损坏影响的数值仿真[J]. 计算机仿真， 2014， 31(9):161-164. doi:10.3969/j.issn.1006-9348.2014.09.035 YU Hao, LIAN Zhanghua, LIN Tiejun. Numerical simulation of influence of cementing quality on casing failure for oil field[J]. Computer Simulation, 2014, 31(9): 161–164. doi: 10.3969/j.issn.1006-9348.2014.09.035
[8] 崔明月，张颖，杨军征，等. 水泥环缺损时套管损坏有限元分析[J]. 石油矿场机械， 2016， 45(8):31-35. doi:10.3969/j.issn.1001-3482.2016.08.007 CUI Mingyue, ZHANG Ying, YANG Junzheng, et al. Finite element analysis of casing damage with defective cement sheath[J]. Oil Field Equipment, 2016, 45(8): 31–35. doi: 10.3969/j.issn.1001-3482.2016.08.007
[9] 练章华，罗泽利，步宏光，等. 水泥环环状缺失套损机理及防控措施[J]. 石油钻采工艺， 2017， 39(4):435-441. doi:10.13639/j.odpt.2017.04.008 LIAN Zhanghua, LUO Zeli, BU Hongguang, et al. Mechanical and control measures on casing damage due to annular absence of cement sheath[J]. Oil Drilling & Production Technology, 2017, 39(4): 435–441. doi: 10.13639/j.odpt.2017.04.008
[10] 宋烨炜，董泽训，李宽，等. 水泥环参数和套管形状参数对套管强度的影响[J]. 钻探工程， 2021， 48(2):70-77. doi:10.12143/j.ztgc.2021.02.010 SONG Yewei, DONG Zexun, LI Kuan, et al. The influencing of cement sheath parameters and casing shape parameters on casing strength[J]. Drilling Engineering, 2021, 48(2): 70–77. doi: 10.12143/j.ztgc.2021.02.010
[11] 杨雄文，巨亚锋. 固井水泥环缺陷对套管强度影响仿真分析[J]. 石油矿场机械， 2007， 36(9):49-52. doi:10.3969/j.issn.1001-3482.2007.09.014 YANG Xiongwen, JU Yafeng. Simulation analysis of influence about cement to casing stress[J]. Oil Field Equipment, 2007, 36(9): 49–52. doi: 10.3969/j.issn.1001-3482.2007.09.014
[12] 陈勇，练章华，陈敏，等. 水泥环周向缺失的热采井井筒热应力耦合分析[J]. 石油钻采工艺， 2008， 30(2):108-110. doi:10.3969/j.issn.1000-7393.2008.02.027 CHEN Yong, LIAN Zhanghua, CHEN Min, et al. Thermal-stress coupling analysis of thermal recovery wells with cement sheath circum ferential discontinuity[J]. Oil Drilling & Production Technology, 2008, 30(2): 108-110. doi: 10.3969/j.issn.1000-7393.2008.02.027
[13] 祝效华，刘少胡，童华，等. 高温热采井水泥环缺陷对套管安全性的影响分析[J]. 水动力学研究与进展A辑， 2012， 27(4):478-485. doi:10.3969/j.issn.1000-4874.2012.04.016 ZHU Xiaohua, LIU Shaohu, TONG Hua, et al. Casing safety analysis with defective cement ring in thermal recovery well[J]. Journal of Hydrodynamics, 2012, 27(4): 478–485. doi: 10.3969/j.issn.1000-4874.2012.04.016
[14] SALEHABADI M, JIN Min, YANG Jinhai, et al. Finite element modeling of casing in gas-hydrate-bearing sediments[C]. SPE 113819-PA, 2009. doi: 10.2118/113819-PA
[15] 赵鹏，赵志宝，刘乐华. 水泥环缺失对套管损坏的影响分析[J]. 油气田地面工程， 2009， 28(10):40-41. doi:10.3969/j.issn.1006-6896.2009.10.022 ZHAO Peng, ZHAO Zhibao, LIU Luehua. Impact analysis of cement sheath deletion on casing damage[J]. OilGasfield Surface Engineering, 2009, 28(10): 40–41. doi: 10.3969/j.issn.1006-6896.2009.10.022
[16] PATTILLO P D, KRISTIANSEN T G. Analysis of horizontal casing integrity in the valhall field[C]. SPE 78204-MS, 2002. doi: 10.2118/78204-MS
[17] 席岩，李军，柳贡慧，等. 瞬态力-热耦合作用下水泥环形态对套管应力的影响[J]. 断块油气田， 2017， 24(5):700-704. doi:10.6056/dkyqt201705023 XI Yan, LI Jun, LIU Gonghui, et al. Impact analysis of cement sheath shape on casing stress under transient mechanical-thermal coupling effect[J]. Fault-Block Oil & Gas Field, 2017, 24(5): 700–704. doi: 10.6056/dkyqt201705023
[18] 蒋可，李黔，陈远林，等. 页岩气水平井固井质量对套管损坏的影响[J]. 天然气工业， 2015， 35(12):77-82. doi:10.3787/j.issn.1000-0976.2015.12.012 JIANG Ke, LI Qian, CHEN Yuanlin, et al. Influence of cementing quality on casing failures in horizontal shale gas wells[J]. Natrual Gas Industry, 2015, 35(12): 77–82. doi: 10.3787/j.issn.1000-0976.2015.12.012
[19] 麦洋，莫丽，傅栋，等. 固井质量对页岩气井水平井段套管失效的影响[J]. 石油机械， 2019， 47(12):123-130. doi:10.16082/j.cnki.issn.1001-4578.2019.12.019 MAI Yang, MO Li, FU Dong, et al. Effect of cementing quality on casing failure in horizontal section of shale gas well[J]. China Petroleum Machinery, 2019, 47(12): 123–130. doi: 10.16082/j.cnki.issn.1001-4578.2019.12.019
[20] 窦益华，韦堃，罗敬兵，等. 水泥环缺失对水平井套管强度安全性影响分析[J]. 石油机械， 2019， 47(9):17-22. doi:10.16082/j.cnki.issn.1001-4578.2019.09.003 DOU Yihua, WEI Kun, LUO Jingbing, et al. Analysis of the influence of cement sheath absence on casing strength safety in horizontal well[J]. China Petroleum Machinery, 2019, 47(9): 17–22. doi: 10.16082/j.cnki.issn.1001-4578.2019.09.003
[21] ANSYS Inc. Ansys documentation theory reference release 2021 R2[M]. USA: ANSYS Academic Research, 2021.
[22] 陈勉，金衍，张广清. 石油工程岩石力学[M]. 北京:科学出版社， 2008. CHEN Mian, JIN Yan, ZHANG Guangqing. Rock mechanics in petroleum engineering[M]. Beijing: Science Press, 2008.
[23] 张辛，宋宏伟，闫晓. DP与EDP模型及其在隧道稳定分析中的应用[J]. 地下空间与工程学报， 2018， 14(6):1652-1657. ZHANG Xin, SONG Hongwei, YAN Xiao. Analysis of tunneling stability using classic and extended DruckerPrager model[J]. Chinese Journal of Underground Space and Engineering, 2018, 14(6): 1652–1657.