水平井地质导向技术在苏里格气田苏53区块的应用
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摘要
与常规直井相比,水平井在提高单产、迅速建产和老区挖潜方面优势巨大,同时水平井地质跟踪技术的迅速发展,使水平井大幅度提高储层钻遇率和整体开发油气田已成为可能。针对苏里格河流相致密砂岩气藏,砂体叠置、相变快的特点,应用先进的地质跟踪软件将三维地质建模与传统地质跟踪技术相结合,充分应用随钻实时数据,提出了"精雕模型、实时对比、把握着陆、随钻录井、更新模型、修正认识、及时调整"的地质跟踪思路,并以HW井实钻为例加以说明。研究区采用地质跟踪技术,平均砂岩钻遇率为87%,有效储层钻遇率达65%,并结合后期的压裂改造等技术措施,取得了显著的开发效果,对同类型气藏的钻探开发具有较高的借鉴和应用价值。
Compared to common vertical wells,horizontal wells have great advantage in improving individual well producing rate,rapidly establishing productivity and excavating the potential of the old producing area.The rapid development of geologic steering technique of horizontal well make it possible to greatly improve the reservoir drilling rate and overall develop oil and gas fields.In view of the tight sandstone gas reservoirs which have characteristics of fast transformation of fluvial facies,overlapped sandbody,this paper applies advanced geological tracking software,combining the 3D geological modeling and traditional geological tracking technology,and makes fully use of LWD real-time data,from the design,landing into the target to horizontal drilling,and puts forward the relatively perfect thought of geologic steering:carve model,real-time contrast,grasp the landing point;update model,correction of understanding,timely adjustment.And then,it takes the real drilling of HW well for example.With this technique,it obtained average sandstone drilling of 90% and effective reservoir drilling rate of 64%,and makes great production effects combined with the late hydraulic fracturing,which has high reference and application value to the same type of gas reservoir exploration and exploitation.
Compared to common vertical wells,horizontal wells have great advantage in improving individual well producing rate,rapidly establishing productivity and excavating the potential of the old producing area.The rapid development of geologic steering technique of horizontal well make it possible to greatly improve the reservoir drilling rate and overall develop oil and gas fields.In view of the tight sandstone gas reservoirs which have characteristics of fast transformation of fluvial facies,overlapped sandbody,this paper applies advanced geological tracking software,combining the 3D geological modeling and traditional geological tracking technology,and makes fully use of LWD real-time data,from the design,landing into the target to horizontal drilling,and puts forward the relatively perfect thought of geologic steering:carve model,real-time contrast,grasp the landing point;update model,correction of understanding,timely adjustment.And then,it takes the real drilling of HW well for example.With this technique,it obtained average sandstone drilling of 90% and effective reservoir drilling rate of 64%,and makes great production effects combined with the late hydraulic fracturing,which has high reference and application value to the same type of gas reservoir exploration and exploitation.
引文
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[11]Yin Yanshu,Wu Shenghe.Improve the precision of fluvial reser-voir modeling of channel center line constraint method[J].Daqing Petroleum Geology and Development,2007,26(6):78-81.[尹艳树,吴胜和.提高河流相储层建模精度的河道中线约束方法[J].大庆石油地质与开发,2007,26(6):78-81.]
[12]Niu Xiangyu.Low permeability reservoir geological design op-timization of horizontal well technology[J].Journal of Natu-ral Gas Chemistry,2009,31(2):120-122.[牛祥玉.低渗透油藏压裂水平井地质优化设计技术[J].石油天然气学报,2009,31(2):120-122.]
[13]Li Chunlan,Yang Min,Jiang Jing.Fracture optimization for horizontal wells in low permeability reservoir[J].Oil Drilling and Recovery Technology,2008,30(4):50-52.[李春兰,杨敏,姜晶.低渗透油藏压裂水平井裂缝优化研究[J].石油钻采工艺,2008,30(4):50-52.]
[2]Zhang Ji,Chen Fengxi,Lu Tao,et al.Horizontal well geos-teering technology and its application in development of Jing-bian Gasfield[J].Natural Gas Geoscience,2008,19(1):137-140.[张吉,陈凤喜,卢涛,等.靖边气田水平井地质导向方法与应用[J].天然气地球科学,2008,19(1):137-140.]
[3]Li Jijun,Yu Hang,Yan Jianian,et al.The application of geos-teering technology for horizontal well in the N1—N 2 1 reservoir of Gas-Oil Field[J].Natural Gas Geoscience,2012,23(5):960-966.[李吉军,于航,严嘉年,等.水平井地质导向技术在尕斯库勒油田N 1—N 2 1油藏应用研究[J].天然气地球科学,2012,23(5):960-966.]
[4]Nan Shan,Yin Kai.Application of geological reservoir drilling technology in Bohai branch horizontal well drilling[J].China Offshore Oil and Gas,2004,16(5):332-336.[南山,殷凯.地质油藏随钻技术在渤海水平分支井钻进中的应用[J].中国海上油气,2004,16(5):332-336.]
[5]Zhang Wenxin.Aonan Oilfield horizontal well geosteering method[J].Science and Technology Forum,2010,(2):55.[张文新.敖南油田水平井地质导向方法探讨[J].科技论坛,2010,(2):55.]
[6]Qin Zongchao,Liu Yinggui,Xing Weiqi,et al.Application of horizontal well geosteering technique in complex fluvial oil-field:Taking Caofeidian11-1Oilfield as an example[J].Petro-leum Exploration and Development,2006,33(3):378-382.[秦宗超,刘迎贵,邢维奇,等.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[J].石油勘探与开发,2006,33(3):378-382.]
[7]Hao Yufen,Zhao Hongyan,Zhang Haiyong.Geosteering qual-ity control countermeasures and measures of cutting logging in horizontal well[J].Jianghan Petroleum Science and Tech-nology,2009,19(2):27-31.[郝玉芬,赵红燕,章海勇.岩屑录井水平井地质导向质量控制对策与措施[J].江汉石油科技,2009,19(2):27-31.]
[8]Zhou Xianwen.Research in Low Permeability Thin Horizontal Well Development[D].Beijing:China University of Geosciences(Beijing)Oil and Gas Field Development,2009.[周贤文.低渗透薄层水平井开发研究[D].北京:中国地质大学(北京)油气田开发系,2009.]
[9]Zhang Mingzhen,Yin Xingyao,Yang Changchun,et al.Seismic de-scription for the meandering river facies[J].Petroleum Geophys-ics,2007,5(1):39-42.[张明振,印兴耀,杨长春,等.曲流河沉积微相的三维地震描述[J].油气地球物理,2007,5(1):39-42.]
[10]Yu Xinghe,Li Shengli,Zhao Shu.Fluvial petroleum reservoir combined with seismic stochastic modeling constraint method[J].Earth Science Frontiers,2008,15(4):33-41.[于兴河,李胜利,赵舒.河流相油气储层的井震结合相控随机建模约束方法[J].地学前缘,2008,15(4):33-41.]
[11]Yin Yanshu,Wu Shenghe.Improve the precision of fluvial reser-voir modeling of channel center line constraint method[J].Daqing Petroleum Geology and Development,2007,26(6):78-81.[尹艳树,吴胜和.提高河流相储层建模精度的河道中线约束方法[J].大庆石油地质与开发,2007,26(6):78-81.]
[12]Niu Xiangyu.Low permeability reservoir geological design op-timization of horizontal well technology[J].Journal of Natu-ral Gas Chemistry,2009,31(2):120-122.[牛祥玉.低渗透油藏压裂水平井地质优化设计技术[J].石油天然气学报,2009,31(2):120-122.]
[13]Li Chunlan,Yang Min,Jiang Jing.Fracture optimization for horizontal wells in low permeability reservoir[J].Oil Drilling and Recovery Technology,2008,30(4):50-52.[李春兰,杨敏,姜晶.低渗透油藏压裂水平井裂缝优化研究[J].石油钻采工艺,2008,30(4):50-52.]
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