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1 PETROLEUM EXPLORATION AND DEVELOPMENT Vol.41 No.2 文章编号 : (2014) DOI: /PED 深水钻井表层导管静置时间窗口设计周波 1, 杨进 1, 刘正礼 2, 罗俊峰 2, 叶吉华 2, 陈彬 2, 刘书杰 3, 周建良 3 (1. 中国石油大学 ( 北京 ) 石油工程学院 ;2. 中海石油 ( 中国 ) 有限公司深圳分公司 ;3. 中海油研究总院 ) 基金项目 : 国家自然科学基金项目深水钻井表层导管喷射钻进机理研究 ( ); 国家科技重大专项深水钻完井及其救援井应用技术研究 (2011ZX ) 摘要 : 为了降低深水钻井作业风险缩短钻井周期, 提出了深水钻井表层导管静置时间窗口设计方法, 并通过现场石油勘探与开发应用对其进行了验证根据现场试验数据得出了表层导管与周围海底土间摩擦力随静置时间的变化关系, 并建立了表层导管实时承载力计算模型针对表层导管喷射到位至解脱送入工具阶段和二开套管坐挂井口固井阶段这两个相对危险的阶段对表层导管进行了力学分析, 并以南中国海某深水井表层导管为例确定了喷射到位至解脱送入工具阶段和二开套管固井阶段的表层导管静置时间现场应用结果表明 : 运用提出的表层导管静置时间窗口设计方法既能保证作业安全又能缩短作业时间, 表层导管喷射到位至解脱送入工具阶段平均每口井节约作业时间超过 12 h, 二开套管固井阶段平均每口井节约作业时间超过 24 h 图 6 表 2 参 17 关键词 : 深水钻井 ; 表层导管 ; 喷射法 ; 静置时间 ; 导管承载力中图分类号 :TE21 文献标识码 :A Design of structure casing soaking time in deepwater drilling Zhou Bo 1, Yang Jin 1, Liu Zhengli 2, Luo Junfeng 2, Ye Jihua 2, Chen Bin 2, Liu Shujie 3, Zhou Jianliang 3 (1. College of Petroleum Engineering, China University of Petroleum, Beijing , China; 2. Shenzhen Company of CNOOC, Shenzhen , China; 3. Research Institute of CNOOC, Beijing , China) Abstract: To decrease the risk in deep water drilling and shorten the drilling period, a structure casing soaking time design method for deep-water jetting was provided and verified by oil field application. Based on the field simulation experiment of soil-pile interaction, the relationship between soaking time and bearing capacity was achieved, and a real-time bearing capacity calculation model of structure casing was established. The mechanical properties of structure casing in two conditions were analyzed, including Cam Activated Drilling Ahead (CADA) tool releasing stage and surface casing cementing stage, and the soaking time windows of the two stages were designed. Field application results show that: This method can ensure the safety in deep water drilling, optimize driving depth of structure casing, and also improve the drilling efficiency. More than 12 hours per well on average in CADA tool releasing stage and 24 hours per well on average in surface casing cementing stage were saved. Key words: deepwater drilling; structure casing; jetting; soaking time; bearing capacity 0 1 [1-2] h 4 h 6 h 12 h 24 h 48 h

2 表 1 现场试验数据 2 / /h /m /m /m kn [3-6] 4 [7-11] 石油勘探与开发图 1 表层导管与周围土体间摩擦力随静置时间变化关系 K = α ln t+ β 1 r 1 2 图 3 深水钻井表层导管喷射下入关键受力阶段图 2 不同水深处表层导管承载力恢复系数与静置时间关系 ut u0 r u ( α ln β ) Q = Q K = πdls t 表层导管喷射到位至解脱送入工具阶段力学分析

3 236 Vol. 41 No.2 Gr = Wc + WLPWH + Wm + WCADA 3 Wc = λkbl Fr Gr 石油勘探与开发二开套管坐挂井口固井阶段力学分析 [12-17] Gc = Wc + Ww + Wm + k( Wca + Wcs + Wce + Wmr ) 5 图 4 南中国海某深水井外径 mm 表层导管实时承载力 3 Fc Gc λkl b + W LPWH+ Wm + WCADA β ln tr α πdlsu α λkl b + Ww + Wm + kw ( ca + Wcs + Wce + Wmr) β ln tc α πdlsu α mm mm 36 in 图 5 南中国海某深水井外径 mm 表层导管喷射到位至解脱送入工具阶段静置时间设计图版

4 h 24 h 石油勘探与开发符号注释 : K r α 0.04 t h β 0.02~0.03 图 6 南中国海某深水井外径 mm 表层导管喷射到位 Q ut N Q u0 至二开套管固井阶段静置时间设计图版 N D m L mm 65 m m S u MPa G r N W c N W 3 h LPWH N W m N W CADA N λ N/m k b F r 120 h 2 12 h 24 h N F c N G c N k W w N W ca N W cs N W ce N W mr N t r h t c h 参考文献 : [1] Beck R D, Jackson C W, Hamilton T K. Reliable deepwater structural 表 2 深水钻井表层导管静置时间窗口设计方法现场应用情况 casing installation using controlled jetting[r]. SPE 22542, [2] Yang Jin, Liu Shujie, Zhou Jianliang, et al. Research of conductor setting depth using jetting in the surface of deepwater[r]. SPE /h /h /h /h , NH NH [3] Jeanjean P. Innovative design method for deepwater surface Ceiba W casings[r]. SPE 77357, Ceiba G [4] Quiros G W, Little R L. Deepwater soil properties and their impact CG on the geotechnical program[r]. OTC 15262, CG [5],,,. [J]., 2013, 40(3): Yang Jin, Yan De, Tian Ruirui, et al. Bit stick-out calculation for the 5 deepwater conductor jetting technique[j]. Petroleum Exploration and Development, 2013, 40(3): [6],,,. [J]., 2012, 39(1): Ju Shaodong, Chang Yuanjiang, Chen Guoming, et al. Envelopes for

5 238 Vol. 41 No.2 connected operation of the deepwater drilling riser[j]. Petroleum Exploration and Development, 2012, 39(1): [14] China Sea[J]. Journal of Oil and Gas Technology, 2011, 33(3): ,,. [7] Eaton L F, Actis S C, Williamson R N, et al. Deepwater batchset operations through the Magnolia shallow water flow sand[r]. SPE 92289, [J]., 2008, 32(4): Su Kanhua, Guan Zhichuan, Su Yi nao. Determination method of [8] Akers T J. Improving hole quality and casing-running performance in riser less top holes: Deepwater Angola[R]. SPE , conductor setting depth using jetting drilling in deepwater[j]. Journal of China University of Petroleum, 2008, 32(4): [9],. [J]., 2006, 28(5): Ma Fei, Song Zhihui. Dynamic property and breaking soil mechanism of water jet[j]. Journal of University of Science and Technology Beijing, 2006, 28(5): [15] [16],,,. [J], 2011, 32(3): Qu Hai, Li Gensheng, Huang Zhongwei, et al. Sealing mechanism of the hydrajet stepwise fracturing[j]. 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1.0 % 0.25 % 85μm % U416 Sulfate expansion deformation law and mechanism of cement stabilized macadam base of saline areas in Xinjiang Song

1.0 % 0.25 % 85μm % U416 Sulfate expansion deformation law and mechanism of cement stabilized macadam base of saline areas in Xinjiang Song 1.0 % 0.25 % 85μm 0.97 0.136 % U416 Sulfate expansion deformation law and mechanism of cement stabilized macadam base of saline areas in Xinjiang Song Liang 1,2 Wang Xuan-cang 1 1 School of Highway, Chang