文23地下储气库关键工程技术
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摘要
文23储气库是我国中东部地区最大储气库,工程建设过程中遇到固井难度大、井漏严重、井筒封闭性评价困难、注采管柱要求高和老井井况复杂等技术挑战,为此开展了盐膏层固井、超低压储层防漏及保护、盖层段井筒封闭性评价、注采完井管柱设计和老井封堵与评价等技术攻关,形成了文23储气库关键工程技术,解决了文23储气库建设中的技术难题。文23储气库关键技术在现场应用后,固井质量显著提高,钻井液漏失量降低52.3%,井筒封闭性评价提高了施工决策效率,保障了储气库工程建设的顺利施工。文23储气库示范工程的建设,为类似储气库建设提供了技术保障和示范。
The Wen 23 underground gas storage area is the largest one in the central and eastern China. It has faced several challenges in its construction phase, such as difficulty in cementing, serious leakage, difficulty in evaluating the wellbore sealing, high requirements on the injection/production pipe string and the complicated conditions of existing well. To optimize operations, technical studies were conducted on the aspects of salt formation cementing, ultra-low pressure reservoir leakage-prevention and protection, wellbore sealing evaluation, injection/production and completion string design, and existing wells plugging and evaluation, and major technical difficulties during the construction of Wen 23 gas storage reservoir are solved. The key engineering techniques applied in the Wen23 underground gas storage, the cementing quality has been significantly improved, the loss of drilling fluid has been reduced by 52.3%, and the wellbore sealing evaluation has improved the efficiency of construction decision-making.The construction of Wen 23 underground gas storage demonstration project provides technical supports and demonstration for the construction of similar projects.
The Wen 23 underground gas storage area is the largest one in the central and eastern China. It has faced several challenges in its construction phase, such as difficulty in cementing, serious leakage, difficulty in evaluating the wellbore sealing, high requirements on the injection/production pipe string and the complicated conditions of existing well. To optimize operations, technical studies were conducted on the aspects of salt formation cementing, ultra-low pressure reservoir leakage-prevention and protection, wellbore sealing evaluation, injection/production and completion string design, and existing wells plugging and evaluation, and major technical difficulties during the construction of Wen 23 gas storage reservoir are solved. The key engineering techniques applied in the Wen23 underground gas storage, the cementing quality has been significantly improved, the loss of drilling fluid has been reduced by 52.3%, and the wellbore sealing evaluation has improved the efficiency of construction decision-making.The construction of Wen 23 underground gas storage demonstration project provides technical supports and demonstration for the construction of similar projects.
引文
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[12]袁光杰,夏焱,金根泰,等.国内外地下储库现状及工程技术发展趋势[J].石油钻探技术,2017,45(4):8-14.YUAN Guangjie,XIA Yan,JIN Gentai,et al.Present state of underground storage and development trends in engineering technologies at home and abroad[J].Petroleum Drilling Techniques,2017,45(4):8-14.
[2]李朝霞,何爱国.砂岩储气库注采井完井工艺技术[J].石油钻探技术,2008,36(1):16-19.LI Zhaoxia,HE Aiguo.Injecting-producing well completion technique in gas-storing sandy reservoirs[J].Petroleum Drilling Techniques,2008,36(1):16-19.
[3]尹学源,张子桥.金坛盐穴地下储气库固井技术[J].石油钻探技术,2006,34(2):45-47.YIN Xueyuan,ZHANG Ziqiao.Cementing techniques for wells with salt caverns used for gas storage in Jintan[J].Petroleum Drilling Techniques,2006,34(2):45-47.
[4]刘鑫,赵楠,杨宪民,等.强吸水暂堵完井液在呼图壁储气库完井中的应用[J].石油钻探技术,2013,41(6):72-77.LIU Xin,ZHAO Nan,YANG Xianmin,et al.Application of strong water absorption temporary plugging technique in well completion of Hutubi Gas Storage[J].Petroleum Drilling Techniques,2013,41(6):72-77.
[5]杨明清,吴佼翰,卞玮,等.俄罗斯地下储气库现状及未来发展[J].石油钻采工艺,2018,40(5):671-676.YANG Mingqing,WU Jiaohan,BIAN Wei,et al.Present situation and future development of underground gas storage reservoirs in Russia[J].Oil Drilling&Production Technology,2018,40(5):671-676.
[6]鲁洪江,杨洪志,Moh’d M Amro,等.地下储气库注采循环过程中储层干化问题研究[J].石油钻探技术,2018,46(4):1-8.LU Hongjiang,YANG Hongzhi,Moh’d M Amro,et al.Drying process in underground gas storage reservoir[J].Petroleum Drilling Techniques,2018,46(4):1-8.
[7]李杰,杨健,马辉运.相国寺储气库钻采工艺技术[M].北京:石油工业出版社,2018:72-78.LI Jie,YANG Jian,MA Huiyun.Drilling and production technology of Xiangguosi Gas Storage[M].Beijing:Petroleum Industry Press,2018:72-78.
[8]郑得文,胥洪成,王皆明,等.气藏型储气库建库评价关键技术[J].石油勘探与开发,2017,44(5):794-801.ZHENG Dewen,XU Hongcheng,WANG Jieming,et al.Key evaluation techniques in the process of gas reservoir being converted into underground gas storage[J].Petroleum Exploration and Development,2017,44(5):794-801.
[9]万浩东,杨远光.储气库井弹性自愈合水泥浆体系及其性能评价[J].石油钻采工艺,2018,40(6):730-735.WAN Haodong,YANG Yuanguang.Elastic self-healing slurry system used for gas storage wells and its property evaluation[J].Oil Drilling&Production Technology,2018,40(6):730-735.
[10]范云鹏.地下储气库的作用及功能综述[J].石化技术,2015(7):267.FAN Yunpeng.Summarization of composition and function of underground gas repository[J].Petrochemical Technology,2015(7):267.
[11]杨伟,王雪亮,马成荣.国内外地下储气库现状及发展趋势[J].油气储运,2007,26(6):15-19.YANG Wei,WANG Xueliang,MA Chengrong.Underground gas storage:status quo and development worldwide[J].Oil&Gas Storage and Transportation,2007,26(6):15-19.
[12]袁光杰,夏焱,金根泰,等.国内外地下储库现状及工程技术发展趋势[J].石油钻探技术,2017,45(4):8-14.YUAN Guangjie,XIA Yan,JIN Gentai,et al.Present state of underground storage and development trends in engineering technologies at home and abroad[J].Petroleum Drilling Techniques,2017,45(4):8-14.