Normal Injection, Reverse Squeeze and Intermediate Diversion: A Technology for Cementing the Complex Well **1-H*
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摘要: **1-H*井二开穿越新近系库车组N2k、康村组N1-2k及吉迪克组N1j上段泥岩、砂泥岩和砂砾岩互层及吉迪克组N 1j层下段泥岩、砂岩、膏泥岩互层，于古近系E2-3s泥岩顶完钻固井，为三开低压层钻进创造条件。该开次5065～5360.53 m井段有多套高压盐水层，钻井液密度为1.51 g/cm3，静止状态出现水侵溢流，5318～5324.51 m井段为漏失层，开泵出现失返性漏失，井底仅有2.47 m泥岩隔板层，溢流层与漏层共存，形成又漏又溢的井下复杂状况，在不断压井、堵漏中完成钻进和电测作业，中途完钻井深为5363 m，下入φ244.5 mm套管。采用抗侵防窜、防漏、高韧性、三凝双密度抗盐水泥浆体系和“正注、反挤、中间分流”的注水泥技术完成固井作业，封固质量合格。Abstract: The second interval of the well **1-H* penetrated the Neogene N2k, N1-2k, the upper N1j (claystone, interbeds of sand shale and sandy conglomerate) and the lower N1j (claystone, sandstone and interbeds of gypsum and claystone), and was drilled to the top of the Paleogene E2-3s formation (claystone), providing conditions for drilling the third interval. Several high pressure water zones are found between 5065 m and 5360.53 m of the second interval, with overflow of well at static condition when mud weight was 1.51 g/cm3. Mud loss was encountered at pumping between 5318 m and 532,51 m, and there was only 2.47 m of claystone worked as a baffle layer. The drilling process of this interval and wireline logging were accompanied by the continual well killing and mud loss control because of the coexistence of mud loss and overflow in the same interval. This interval was drilled to 5363 m and was cased with φ244.5 mm casing string. A cement slurry with anti-channeling agents for invasion resistance, LCM, enhanced toughness, three setting points, double densities and salt resistance was used in the well cementing job. Normal injection, reverse squeeze and intermediate diversion were taken to ensure the success of the well cementing job. The quality of the well cementing job met the designed requirements.
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[1] 刘振通, 党冬红, 杨喆, 等. 抗冲击韧性水泥浆体系在印尼Klari-2st井中的应用[J]. 石油钻采工艺, 2014, 35(2):34-36.LIU Zhentong, DANG Donghong, YANG Zhe, et al. Application of shock-resistant high tenacity cement slurry system to well Klari-2st in Indonesia[J].Oil Drilling & Production Technology, 2014, 35(2):34-36. [2] 钟福海, 宋元洪, 费中明, 等. 缅甸D区块窄密度窗口防漏防窜固井技术探讨[J]. 钻井液与完井液, 2010, 27(5):61-64.ZHONG Fuhai, SONG Yuanhong, FEI Zhongming, et al. Cementing technology on prevention of leaking and channeling with narrow density window in block D in Burma[J]. Drilling Fluid & Completion Fluid, 2010, 27(5):61-64. [3] 郭文猛, 宋元洪, 刘振通, 等. 正、反注固井工艺在塔中油田的应用[J]. 内蒙古石油化工, 2013(4):10-11. GUO Wenmeng, SONG Yuanhong, LIU Zhentong, et al.Application of positive reverse injection cementing technology in Tazhong oilfield[J].Inner Mongolia Petrochemical Industry, 2013(4):10-11. [4] DANG Donghong, GAO Fei, HE Jianyong, et al. Research and application of cement plugging techniques in evaporite bed of Piedmont Tectonic Belt of the Tarim Basin[J]. Advanced Materials Research, 2013(1616):2634-2638. [5] 刘振通, 吴红波, 宋元洪, 等.Thingdong-1复杂高压气井大尺寸套管固井技术[J]. 钻井液与完井液, 2011, 28(4):57-59.LIU Zhentong, WU Hongbo, SONG Yuanhong, et al. Cementing technology in large casings of hign pressure gas well Thingadong-1[J]. Drilling Fluid & Completion Fluid, 2011, 28(4):57-59. [6] 吴宗国. 又喷又漏的固井技术[J]. 钻采工艺, 1999, 22(5):84-86.WU Zongguo. Kick and leakage of cementing technology[J]. Drilling and Production Technology, 1999, 22(5):84-86. [7] 吴洪波, 刘振通, 周坚, 等. 缅甸PATOLON-2复杂气井固井技术[J]. 石油钻采工艺, 2012, 34(1):43-45.WU Hongbo, LIU Zhentong, ZHOU Jian, et al. Cementing techiniques for gas well PATOLON-2 in Myanmar[J]. Oil Drilling & Production Technology, 2012, 34(1):43-45. -
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