Application of Tieback outside Casing in Horizontal Wells Drilled on Semi-Submersible Platforms
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摘要: 南海西部海域某井在采用半潜式钻井平台进行钻井作业时，φ244.4 mm套管下至井深2 546.00 m时遇阻，距离设计井深还有35.00 m。通过多种技术手段处理后未能成功解卡，选择切割φ244.5 mm套管，使用套管外回接技术回接套管并实现套管挂坐挂及密封。在泥线以下40~60 m位置（单根套管中间位置）切割回收套管及套管挂；下入套管壁内外修整铣鞋磨铣修整套管割口0.2~0.5 m；下入套管外回接补贴工具，使原套管进入外回接补贴工具并进入延伸筒，直至套管挂坐挂到位，使套管外回接补贴工具与原套管连为一体；加压对套管外回接补贴工具密封进行测试；该井在井深203.02 m处成功切割回收了9根φ244.5 mm套管及套管挂，对套管割口磨铣0.24 m后，套管外回接补贴工具下至井深205.40 m进行回接，试压20.69 MPa合格，实现套管对接及密封。现场应用表明，套管外回接工艺不缩小现有管串内径，保障套管通径，密封寿命满足油田开发要求，能够解决半潜式平台套管未下到位的问题。Abstract: Pipe-sticking occurred in a well drilled on semi-submersible platform in Western South China Sea during running the φ244.5 mm casing at 2 546 m,35 m away from the designed depth 2 581 m.Multiple measures were tried but failed,then the casing had to be cut and casing external tieback technique was used to tieback casing so that the casing hanger could land on the subsea wellhead and besealed.The tie-back process included:cut and retrieved casing and casing hanger at 40-60 m below the mud line,dropped mill shoe to mill 0.2-0.6 m on casing scarfing,dropped the tool of external casing tieback patch and made the initial casing into casing external tieback patch until the casing hanger land on the subsea wellhead so that the outer casing tieback patch could connect with original casing;applied pressure in the casing external tieback patch tool and tested the seal;cut at 203.02 m and retrieve nine φ244.5 mm casing joints and casing hanger,milling 0.24 m on casing scarfing,running casing external tieback patch to 205.40 m,pressure test at 20.69 MPa,butted and sealed casing smoothly.Field application showed that casing external tieback would not reduce the inner diameter of the existing pipe string so ensured casing drift,the sealing life could meet the requirements of oilfield development.It was able to solve the semi-submersible platform casing problem when casing could not reach the designed position.
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Keywords:
- semi-submersible /
- drilling platform /
- casing external tie-back /
- South China Sea
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[1] 闫建聚, 王恩成, 王维星, 等.膨胀管补贴工艺在文留油田的应用[J].石油机械, 2010, 38(3):67-69. Yan Jianju, Wang Encheng, Wang Weixing, et al.Application of expandable tubular subsidy technology in Wenliu Oilfield[J].China Petroleum Machinery, 2010, 38(3):67-69. [2] 何增燕, 吴丽华, 雷利婧, 等.套损井研究及修复[J].特种油气藏, 2004, 11(4):70-73. He Zengyan, Wu Lihua, Lei Lijing, et al.Casing failure well study and repair[J].Special Oil Gas Reservoirs, 2004, 11(4):70-73. [3] 马勇, 姚坤全, 常洪渠, 等.提高高压气井套管回接固井质量的技术[J].天然气工业, 2009, 29(2):61-63. Ma Yong, Yao Kunquan, Chang Hongqu, et al.Cementing technology for "three highs" gas wells in Northeast Sichuan Basin[J].Natural Gas Industry, 2009, 29(2):61-63. [4] 邹阿七, 郑惠如.平湖油气田井口回接技术[J].石油钻探技术, 2000, 28(1):22-23. Zou A’qi, Zheng Huiru.Wellhead tieback techniques in Pinghu Oil Gas Field[J].Petroleum Drilling Techniques, 2000, 28(1):22-23. [5] 张新平, 余雄鹰.平湖油气田A5井水下井口重回接工艺的改进[J].中国海上油气, 2005, 17(4):265-267. Zhang Xinping, Yu Xiongying.Improvement of subsea wellhead tieback procedure for Well A5 in Pinghu Oil and Gas Field[J].China Offshore Oil and Gas, 2005, 17(4):265-267. [6] Kozicz John.Surface BOP:recent experience and future opportunities[R].SPE/IADC 103754, 2006.
[7] Brander G, Magne E, Newman T, et al.Drilling in Brazil in 2887m water depth using a surface BOP system and a DP vessel[R].SPE 87113, 2004.
[8] Avelar C S, Santos O L A, Ribeiro P R.Well control aspects regarding slender well drilling with surface and subsea BOP[R].SPE 94852, 2005.
[9] Simondin A, Macpherson D, Touboul N, et al.A deepwater well construction alternative:surface BOP drilling concept using environmental safe guard[R].SPE87108, 2004.
[10] Tarr B A, Taklo T, Hudson A, et al.Surface BOP sys-tem for subsea development offshore Brazil in 1, 900 m of water[R].SPE 112788, 2008.
[11] Recommended practice for de-sign selection operation and maintenance of marine drillingriser system[S].API RP16Q, 2001.
[12] 黄凯文, 段泽辉, 顾纯巍.吸力桩式水下钻井基盘安装技术研究[J].石油钻采工艺, 2007, 29(6):22-23. Huang Kaiwen, Duan Zehui, Gu Chunwei.Research on baseplate installation technology for suction pile type under-water drilling[J].Oil Drilling Production Technology, 2007, 29(6):22-23. [13] Azancot P, Magne E, Zhang J.Surface BOP-management system design guidelines[R].SPE74531, 2002.
[14] Shanks Earl, Schroeder Jim, Ambrose Bill, et al.Surface BOP for deepwater moderate environment drilling operations from a floating drilling unit[R].OTC 14265, 2002.
[15] Childers Mark.Surface BOP slim rise or conventional 21-inch riser:what is the best concept to use[R].SPE 92762, 2005.
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