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摘要: 井漏不仅是最严重的储层损害方式,而且是钻井工程中长期悬而未决的重大理论和技术难题。诊断并有效控制井漏,要从根本上认识并准确描述井漏三要素:位置、类型及强度。漏失机理及类型诊断是制定科学合理的漏失控制技术的前提。综合利用钻前、随钻、钻后信息资料,描述和表征漏失层性质及参数,进行潜在漏失层预测。建立了钻井液漏失诊断技术系统框架,提出了漏失诊断具体方法,综合室内实验和数值模拟开展裂缝、孔洞的应力敏感性和裂缝传播机制研究,预测漏失通道变形程度和漏失强度,为优选堵漏材料提供理论依据;基于钻时、岩屑、钻井液等工程参数对井漏的异常特征响应来识别井漏,利用实时录井参数来监测并描述井漏状态,提前预测井漏发展趋势;建立了基于漏失发生机理的漏失压力模型,从漏失压力的角度诊断了漏失类型。针对井漏演化过程的认识,初步建立了井漏诊断技术框架,为漏失控制技术提供理论支持。Abstract: Lost circulation imposes the most serious damage to reservoir and is an arduous technological problem remained unsolved.To diagnose and control lost circulation, three elements to lost circulation, i.e., location in which mud is lost, type of lost circulation, and rate of mud loss, should be fundamentally understood.The mechanism and type of lost circulation are the prerequisite for selecting/making the reasonable lost circulation control technology.In lost circulation prediction, drilling data and geological data are the most important.Series of laboratory studies have been conducted to find a method for lost circulation diagnosis.Studies were conducted on the stress sensitivity of fractures and vugs, and the propagation mechanism of fractures.The deformation of channels into which mud is lost and the rate of mud loss can be predicted for the choice of best lost circulation materials.When lost circulation occurs, drilling parameters such as penetration rate and drill cuttings change correspondingly, and real-time mud logging data can be used to predict the status of lost circulation.In the diagnostic model developed, the type of lost circulation is diagnosed using circulating pressure when lost circulation occurs.Based on the understanding of the changing course of lost circulation, a preliminary diagnostic system for lost circulation is developed, providing theoretical support for lost circulation control.
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Shafer D M, Loeppke G E,Glowka D A,et al. An evaluation of flowmeters for the detection of kick and lost circulation during drilling[C]. IADC/SPE 23935. Beda G, Carugo C.Use of mud microloss analysis while drilling to improve the formation evaluation in fractured reservoirs[C]. SPE 71737. Dyke C G,Wu B, Milton-Tayler D. Advances in characterizing natural-fracture permeability from mud-log data[C]. SPE 25022. Oliver Lietard. Fracture width LWD and drilling mud/LCM selection guidelines[C]. SPE 36832. Majidi R,Miska S Z,Yu M.Quantitative analysis of mud losses in naturally fractured reservoirs:the effect of rheology[C]. SPE 114130. 金衍,卢运虎,李再钧. 一种井漏层位钻前风险预测新方法[J].石油钻采工艺,2008,30(3):24-28. Jin Yan, Lu Yunhu, Li Zaijun. A new method predicting pre-drilling risk in lost circulation formation[J]. Oil Drilling & Production Technology,2008,30(3):24-28. 李松, 康毅力, 刘修善, 等. 先兆漏失诊断——钻井液漏失控制的一个关键[J]. 钻井液与完井液, 2011, 28(2):80-83. Li Song, Kang Yili, Liu Xiushan, et al. Portent diagnostic of mud Loss-A key to mud loss controlling[J].Drilling Fluid & Completion Fluid,2011,28(2):80-83. 沈海超,胡晓庆,李桂芝.破碎性地层漏失力学机理及井漏诊断与处理思路[J]. 钻井液与完井液,2013,30(1):85-88. Shen Haichao, Hu Xiaoqing, Li Guizhi. Research on mechanical mechanism and treating method of mud loss in fragile formation[J]. Drilling Fluid & Completion Fluid, 2013,30(1):85-88. Li Song,Kang Yili,Li Daqi,et al.Modeling Herschel-Bulkely drilling fluid flow in a variable radial fracture[J]. Journal of Porous Media,2014,17(3):239-254. 康毅力,王海涛,游利军,等.基于层次分析法的地层钻井液漏失概率判定[J].西南石油大学学报(自然科学版)2013,35(4):180-186. Kang Yili, Wang Haitao, You Lijun, et al.Probability determination for loss circulation of drilling fluids based on analytic hierarchy process[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2013,35(4):180-186. 兰林,康毅力,陈一健,等.储层应力敏感性评价实验方法与评价指标探讨[J]. 钻井液与完井液,2005,22(3):1-4. Lan Lin,Kang Yili,Chen Yijian,et al.Discussion on evaluation methods for stress sensitivities of low permeability and tight sandstone reservoirs[J].Drilling Fluid & Completion Fluid,2005,22(3):1-4. 李松,康毅力,李大奇,等. 考虑孔洞沟通性的碳酸盐岩储层应力敏感性实验[J]. 重庆大学学报,2012,35(5):115-120. Li Song, Kang Yili, Li Daqi, et al. Laboratory investigation on stress sensitivity of carbonate reservoir considering vuggy connectivity[J].Journal of Chongqing University:Natural Science Edition,2012,35(5):115-120. Kang Yili,You Lijun,Xu Xinghua,et al.Prevention of formation damage induced by mud lost in deep fractured tight gas reservoir in western Sichuan Basin[J]. J Can Pet Technol. 2012,51(1):46-51. 雷鸣, 瞿佳, 康毅力, 等. 川东北裂缝性碳酸盐岩气层钻井完井保护技术[J]. 断块油气田, 2011, 18(6):783-786. Lei Ming, Qu Jia, Kang Yili,et al. Protection technology of drilling and well completion of fractured carbonate gas reservoir in northeastern Sichuan Basin[J].Fault-Block Oil & Gas Field, 2011,18(6):783-786. 闫丰明,康毅力,孙凯,等.裂缝-孔洞型碳酸盐岩储层暂堵性堵漏机理研究[J]. 石油钻探技术,2011,39(2):81-85. Yan Fengming,Kang Yili,Sun Kai,et al.Mechanism of temporary sealing for fractured-vuggy carbonate reservoir[J]. Petroleum Drilling Techniques,2011,39(2):81-85. 许成元,康毅力,游利军,等.裂缝性储层渗透率返排恢复率的影响因素[J]. 石油钻探技术,2012,40(6):17-21. Xu Chengyuan, Kang Yili, You Lijun, et al. Influential factors on permeability recovery during flow back of fractured reservoirs[J].Petroleum Drilling Techniques, 2012,40(6):17-21. 李大奇,康毅力,刘修善,等. 基于漏失机理的碳酸盐岩地层漏失压力模型[J]. 石油学报,2011,32(5):900-904. Li Daqi,Kang Yili,Liu Xiushan, et al.The lost circulation pressure of carbonate formations on the basis of leakage mechanisms[J].Acta Petrolei Sinica,2011,32(5):900-904. Li Song,Kang Yili,You Lijun,et al. Experimental and numerical investigation of multi-scale fracture deformation in fractured-vuggy carbonate reservoirs[J]. The Arabian Journal for Science and Engineering,2014,39(5):4241-4249. 李大奇,康毅力,曾义金,等.缝洞型储层缝宽动态变化及其对钻井液漏失的影响[J].中国石油大学学报(自然科学版),2011,35(5):76-81. Li Daqi,Kang Yili,Zeng Yijin, et al. Dynamic variation of fracture width and its effects on drilling fluid lost circulation in fractured vuggy reservoirs[J].Journal of China University of Petroleum(Edition of Natural Science), 2011,31(5):76-81. 刘向君,罗平亚.岩石力学与石油工程[M].北京:石油工业出版社,2004:118-122. Liu Xiangjun, Luo Pingya. Rock mechanics and petroleum engineering[M]. Beijing:Petroleum Industry Press, 2004:177-182. Lavrov,Johan Tronvoll.Modeling mud loss in fractured formations[C].SPE 88700. Bruel D,Cacas MC,Ledoux E,et al.Modeling storage behavior in a fractured rock mass[J].Journal of Hydrology, 1994,162:267-278.
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