A Study on Tri-axial Design Coefficient Based on Seal Integrity of Premium Connection

doi:10.11885/j.issn.1674-5086.2020.05.19.01

Abstract

Abstract: Aiming at the sealing integrity problem of tubing string in high temperature and high pressure gas well completion, the research on the tri-axis design coefficient of string is carried out based on the integrity analysis of a premium connection of gas seal on the 88.90 mm×6.45 mm 110SS steel grade tubing. In this study, API RP 5C5-2017 international standard connection performance test evaluation method is used to evaluate the load sealing test of a series full envelope under high temperature and room temperature environment. The dangerous load point and variation laws of seal energy and seal energy multiple are analyzed after second-time full envelope load cycles with different full envelope load (VME95% and VME 90%) according to gas seal energy criterion. Results show the seal energy and seal energy multiple as well as its variation law have to be further analyzed under full envelope load cycle by FEA, by which the safety applicable envelope load range need to be determined, although the gas seal premium connection has been evaluated by API standard seal integrity test. Therefore, the serviceability analysis of sealing performance has been performed after second-time full envelope load cycles with three kinds of full envelope load based on the full envelope load test evaluation and finite element simulation, and the safety applicable envelope load range and reasonable tri-axial safety factor have been determined under high temperature and ambient temperature environment. The research results have been applied successfully in some HTHP gas well. The research method presented in this paper provides useful guidance for the determination of safety factor of tri-axial design of tubing string.

Key words: gas seal premium connection, envelope load, seal energy, seal energy multiple, sealing integrity, serviceability analysis

CLC Number:

TE375

WANG Jiandong, LIN Yuanhua, LI Yufei, XIE Nanxing, DENG Kuanhai. A Study on Tri-axial Design Coefficient Based on Seal Integrity of Premium Connection[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2022, 44(4): 165-173.

0
/ / Recommend

Add to citation manager EndNote|Ris|BibTeX

URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2020.05.19.01

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2022/V44/I4/165

References

[1] 冯耀荣, 付安庆, 王建东, 等.复杂工况油套管柱失效控制与完整性技术研究进展及展望[J].天然气工业, 2020, 40(2):106-114. doi:10.3787/j.issn.1000-0976.2020.02.012 FENG Yaorong, FU Anqing, WANG Jiandong, et al. Failure control and integrity technologies of tubing/casing string under complicated working conditions:Research progress and prospect[J]. Natural Gas Industry, 2020, 40(2):106-114. doi:10.3787/j.issn.1000-0976.2020.02.012
[2] 杨向同, 沈新普, 王克林, 等.完井作业油管柱失效的力学机理——以塔里木盆地某高温高压井为例[J].天然气工业, 2018, 38(7):86-92. doi:10.3787/j.issn.1000-0976.2018.07.012 YANG Xiangtong, SHEN Xinpu, WANG Kelin, et al. Mechanical mechanisms of tubing string failures in well completion operation:A case study from one HTHP well in the Tarim Basin[J]. Natural Gas Industry, 2018, 38(7):86-92. doi:10.3787/j.issn.1000-0976.2018.07.012
[3] 樊恒, 闫相祯, 冯耀荣, 等.基于分项系数法的套管实用可靠度设计方法[J].石油学报, 2016, 37(6):807-814. doi:10.7623/syxb201606012 FAN Heng, YAN Xiangzhen, FENG Yaorong, et al. Practical reliability design method of casing based on partial coefficient method[J]. Acta PetroleI Sinica, 2016, 37(6):807-814. doi:10.7623/syxb201606012
[4] 郭建华, 佘朝毅, 唐庚, 等.高温高压高酸性气井完井管柱优化设计[J].天然气工业, 2011, 31(5):70-72. doi:10.3787/j.issn.1000-0976.2011.05.018 GUO Jianhua, SHE Chaoyi, TANG Geng, et al. Optimal design and application of completion strings in a HTHP gas well[J]. Natural Gas Industry, 2011, 31(5):70-72. doi:10.3787/j.issn.1000-0976.2011.05.018
[5] 王建东, 林凯, 赵克枫, 等.低压低渗苏里格气田套管柱经济可靠性优化[J].天然气工业, 2007, 27(12):74-76. doi:10.3321/j.issn:1000-0976.2007.12.022 WANG Jiandong, LIN Kai, ZHAO Kefeng, et al. Reliability and economical optimization of casing string used in Sulige Gas Field with low pressure and low permeability reservoirs[J]. Natural Gas Industry, 2007, 27(12):74-76. doi:10.3321/j.issn:1000-0976.2007.12.022
[6] 冯广庆, 吕拴录, 王振彪, 等.套压异常升高现状调查研究及原因分析[J].油气井测试, 2012, 21(5):43-44. doi:10.3969/j.issn.1004-4388.2012.05.016 FENG Guangqing, LÜ Shuanlu, WANG Zhenbiao, et al. Investigation and analysis on abnormal increase of casing pressure[J]. Oil and Gas Well Test, 2012, 21(5):43-44. doi:10.3969/j.issn.1004-4388.2012.05.016
[7] API. Procedures for testing casing and tubing connections:API RP 5C5-2017[S]. American Petroleum Institute, 2017.
[8] 安文华, 骆发前, 吕拴录, 等.塔里木油田特殊螺纹接头油套管评价试验及应用研究[J].钻采工艺, 2010, 33(5):84-88. doi:10.3969/j.issn.1006-768X.2010.05.025 AN Wenhua, LUO Faqian, LÜ Shuanlu, et al. Evaluation test and application ofpremium connection tubing and casing for high temperature and high pressure gas well[J]. Drilling & Production Technology, 2010, 33(5):84-88. doi:10.3969/j.issn.1006-768X.2010.05.025
[9] PAYNE M L, SCHWIND B E. A new international standard for casing/tubing connection testing[C]. SPE 52846-MS, 1999. doi:10.2523/52846-MS
[10] VALIGURA G A, CERNOCKY P. Shell exploration and production company list of connections tested for well service pressures >8000 psi based on standardized API/ISO qualification testing procedures[C]. SPE 97605-MS, 2005. doi:10.2523/97605-MS
[11] VALIGURA G A, ANDREW T. Connections for HPHT well applications and connection leak probability[C]. SPE 97588-MS, 2005. doi:10.2523/97588-MS
[12] AKINFOLARIN A, SUNDAY A, DAVID O, et al. Production casing and tubing design for HPHT wells in the Niger Delta[C]. SPE 167580-MS, 2013. doi:10.2118/167580-MS
[13] GRIJALVA O, PEROZO N, HOLZMANN J, et al. Well integrity in the times of ISO 13679 and premium connections:Experiences and way forward[C]. SPE 187597-MS, 2017. doi:10.2118/187597-MS
[14] MEZA O G, BERDASCO J H, BAPTISTA N P, et al. Technological improvements in OCTG premium casing connections and advancements in design paradigms to address the challenges present during the exploitation of unconventional hydrocarbon resources:A critical review[C]. SPE 183199-MS, 2016. doi:10.2118/183199-MS
[15] 张建兵, 白松, 李双贵, 等. 《ISO 13679:石油天然气工业套管及油管螺纹连接试验程序》的仿真方法[J].天然气工业, 2017, 37(10):66-72. doi:10.3787/j.issn.1000-0976.2017.10.009 ZHANG Jianbing, BAI Song, LI Shuanggui, et al. A simulation evaluation method for testing casing and tubing connections based on ISO 13679 test procedures[J]. Natural Gas Industry, 2017, 37(10):66-72. doi:10.3787/j.issn.1000-0976.2017.10.009
[16] 王建东, 冯耀荣, 林凯, 等.特殊螺纹接头密封结构比对分析[J].中国石油大学学报(自然科学版), 2010, 34(5):126-130. doi:10.3969/j.issn.1673-5005.2010.05.023 WANG Jiandong, FENG Yaorong, LIN Kai, et al. Comparison analysis of premium connection's seal structure[J]. Journal of China University of Petroleum (Edition of Natural Science), 2010, 34(5):126-130. doi:10.3969/j.issn.1673-5005.2010.05.023
[17] International Organization for Standardization. Petroleum and natural gas industries-equations and calculations for the properties of casing, tubing, drill pipe and line pipe used as casing or tubing:ISO 10400-2007[S]. International Organization for Standardization, 2007.
[18] MURTAGIAN G R, FANELLI V, VILLASANTE J A, et al. Sealability of stationary metal-to-metal seals[J]. Journal of Tribology, 2004, 126(6):591-596. doi:10.1115/1.1715103
[19] XIE Jueren, MATTHEWS C. Experimental investigation of metal-to-metal seal behavior in premium casing connections for thermal wells[C]. SPE 184982-MS, 2017. doi:10.2118/184982-MS
[20] International Organization for Standardization. Qualification of casing connections for thermal wells:ISO/PAS 12835-2013[S]. International Organization for Standardization, 2013.
[21] XIE Jueren, XIE Junfeng. Enhancement of current methodologies used for tubular connection product line validation[C]. SPE 198701-MS, 2019. doi:10.2118/198701-MS