水平井地质导向技术在复杂河流相油田中的应用——以曹妃甸11-1油田为例
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摘要
水平井地质导向技术首先建立钻前地质导向模型,并根据评价井的测井资料,对随钻测井(LWD)曲线及可能钻遇的地层岩性进行预测。钻井过程中,在钻前地质导向模型基础上,根据钻井时LWD不同的测井响应和综合录井资料,实时验证构造和储集层信息,不断修正地质导向模型,对靶点深度进行实时预测,及时调整靶点,实现水平井的钻井目的。水平井导向包括2个关键步骤:水平井着陆的导向和水平段钻进过程中的导向。曹妃甸11-1油田开发大量采用了水平井,在水平井钻井过程中,根据目的层油藏类型和不同构造、储集层特征,确定了相应的水平井着陆和水平段钻进的导向原则,保证了水平井精确中靶并使水平段最大限度地穿越储集层,与传统导向技术相比,大幅度提高了水平井钻井成功率。图3参13
In the geo-steering technology,a reservoir navigation model is built,with which the anticipated formation lithology and LWD logging are simulated based on the appraisal wells data.While drilling,the modeled structure and reservoir are validated constantly from the real-time LWD and the compound logging.The model is updated repeatedly according to the penetrated information.The target depth is diagnosed and the target data is adjusted accordingly to make sure the horizontal well successful.The technology has two key steps: geo-steering to land the horizontal well and reservoir navigation to the horizontal section.Horizontal wells are applied in the development practice of the Caofeidian11-1 Oilfield.Different geo-steering rules are made for landing and horizontal section drilling based on different reservoir type,structure and container rock characteristics.They provide a powerful guarantee for perforating reservoirs and increase the success ratio of horizontal well drilling in comparison with the conventional technology.
In the geo-steering technology,a reservoir navigation model is built,with which the anticipated formation lithology and LWD logging are simulated based on the appraisal wells data.While drilling,the modeled structure and reservoir are validated constantly from the real-time LWD and the compound logging.The model is updated repeatedly according to the penetrated information.The target depth is diagnosed and the target data is adjusted accordingly to make sure the horizontal well successful.The technology has two key steps: geo-steering to land the horizontal well and reservoir navigation to the horizontal section.Horizontal wells are applied in the development practice of the Caofeidian11-1 Oilfield.Different geo-steering rules are made for landing and horizontal section drilling based on different reservoir type,structure and container rock characteristics.They provide a powerful guarantee for perforating reservoirs and increase the success ratio of horizontal well drilling in comparison with the conventional technology.
引文
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[13]杨子超,邵建中,邱永志.TK238H井旋转地质导向钻井技术[J].石油钻探技术,2005,32(2):60-61.(YANG Zi-chao,SHAO Jian-zhong,QIU Yong-zhi.Application of rotary geological steeringtechniques to TK238H well[J].Petroleum Drilling Techniques,2005,32(2):60-61.)
[2]李少华,张昌民,王振奇,等.三角洲前缘砂体骨架的随机模拟[J].石油勘探与开发,2004,31(1):67-69.(LI Shao-hua,ZHANG Chang-min,WANG Zhen-qi,et al.Stochastic modelingof sand framework of deltaic front[J].Petroleum Exploration andDevelopment,2004,31(1):67-69.)
[3]苏义脑.地质导向钻井技术概况及其在我国的研究进展[J].石油勘探与开发,2005,32(1):92-95.(SU Yi-nao.Geo-steeringdrilling technology and its development in China[J].PetroleumExploration and Development,2005,31(1):92-95.)
[4]熊敏,刘传鹏,邵运堂.水平井技术在临2块馆二段底水油藏开发调整中的应用[J].石油勘探与开发,2002,29(3):76-77.(XIONG Min,LIU Chuan-peng,SHAO Yun-tang.Applicationof horizontal well technology in the development adjustment ofbottom water oil reservoir in Ng2,Block Lin 2[J].PetroleumExploration and Development,2002,29(3):76-77.)
[5]高志清,陈红.地质导向技术在建平1井的应用[J].江汉石油科技,2002,12(4):24-26.(GAO Zhi-qing,CHEN Hong.Application of geosteering in Jian1 horizontal well[J].JianghanPetroleum Technology,2002,12(4):24-26.)
[6]汲生珍,刘震.波阻抗反演技术在层序地层与沉积分析中的应用[J].石油勘探与开发,2005,32(6):66-68.(JI Sheng-zhen,LIUZhen.Application of wave impedance inversion in sequencestratigraphy and sedimentary analyses[J].Petroleum Explorationand Development,2005,32(6):66-68.)
[7]王西文.精细地震解释技术在油田开发中后期的应用[J].石油勘探与开发,2004,31(6):58-61.(WANG Xi-wen.Technique andapplication of precise seismic interpretation in the laterdevelopment stage of oilfields[J].Petroleum Exploration andDevelopment,2004,31(6):58-61.)
[8]范哲清,梁慧兰,赵春段.黄骅坳陷大港滩海区复杂三维地震资料解释方法[J].石油勘探与开发,2004,31(6):62-65.(FAN Zhe-qing,LIANG Hui-lan,ZHAO Chun-duan.Intricate 3-D seismicinterpretation in shallow water area of Huanghua Sag,Dagangtransition zone[J].Petroleum Exploration and Development,2004,31(6):62-65.)
[9]周丽清,赵丽敏,赵国梁,等.高分辨率地震约束相建模[J].石油勘探与开发,2002,29(3):56-58.(ZHOU Li-qing,ZHAO Li-min,ZHAO Guo-liang,et al.Stochastic facies modelingconstrained by high-resolution seismic data[J].PetroleumExploration and Development,2002,29(3):56-58.)
[10]王青,吴晓东,刘根新.水平井开采底水油藏采水控锥方法研究[J].石油勘探与开发,2005,32(1):109-111.(WANG Qing,WUXiao-dong,LIU Gen-xin.Water extraction and cone control ofhorizontal well in exploitation of bottom water reservoir[J].Petroleum Exploration and Development,2005,32(1):109-111.)
[11]郭肖,杜志敏.非均质性对水平井产能的影响[J].石油勘探与开发,2004,31(1):91-93.(GUO Xiao,DU Zhi-min.Impacts ofpermeability heterogeneity on horizontal well productivity[J].Petroleum Exploration and Development,2004,31(1):91-93.)
[12]刘月田,张吉昌.各向异性油藏水平井网稳定渗流与产能分析[J].石油勘探与开发,2004,31(1):94-96.(LIU Yue-tian,ZHANG Ji-chang.Stable permeating flow and productivityanalysis for anisotropic reservoirs in horizontal well networks[J].Petroleum Exploration and Development,2004,31(1):94-96.)
[13]杨子超,邵建中,邱永志.TK238H井旋转地质导向钻井技术[J].石油钻探技术,2005,32(2):60-61.(YANG Zi-chao,SHAO Jian-zhong,QIU Yong-zhi.Application of rotary geological steeringtechniques to TK238H well[J].Petroleum Drilling Techniques,2005,32(2):60-61.)
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