特色构造解释及储层预测技术在川西北双鱼石地区的应用
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摘要
川西北双鱼石地区下二叠统栖霞组发育台缘滩相沉积的白云岩储层,形成构造—岩性复合圈闭气藏。研究区位于龙门山前冲断带,断层发育,落实难度较大。由于目的层埋深较大、储层厚度较薄,导致储层识别难度较大。为此,运用GeoEast解释系统的构造导向滤波技术、基于特征结构的相干技术识别断层,开展精细构造解释,采用古地貌分析技术指导栖霞组台缘相带刻画,最后采用属性敏感分析技术及地震反演技术开展储层定性和定量预测,优选储层发育有利区,为该地区后续勘探开发提供有力的技术支撑。
A group of carbonate rock dolomite reservoirs of Lower Permian Qixia Formation in the Beiyushi Area,Northwest Sichuan Basin are lithologic tectonic-lithologic composite-trap gas reservoirs.The reservoirs are jointly controlled by sedimentary facies and dolomite.Our study area is located in the front of the Longmen Mountain fault zones,which is characterized by well-developed faults,thin beds,deeply buried targets,and unclear seismic responses.It is very difficult to identify this kind of reservoirs.To overcome the problems,we conduct the research with interpretation tools provided by GeoEast System.Faults are identified with structure-oriented filtering and coherence attribute.The Qixia group platform-marginal facies is characterized with the paleo-geomorphology analysis.The qualitative and quantitative reservoir predictions are carried out with attribute sensitivity analysis and seismic inversion,which will provide favorable zones for the subsequent exploration and development in the area.
A group of carbonate rock dolomite reservoirs of Lower Permian Qixia Formation in the Beiyushi Area,Northwest Sichuan Basin are lithologic tectonic-lithologic composite-trap gas reservoirs.The reservoirs are jointly controlled by sedimentary facies and dolomite.Our study area is located in the front of the Longmen Mountain fault zones,which is characterized by well-developed faults,thin beds,deeply buried targets,and unclear seismic responses.It is very difficult to identify this kind of reservoirs.To overcome the problems,we conduct the research with interpretation tools provided by GeoEast System.Faults are identified with structure-oriented filtering and coherence attribute.The Qixia group platform-marginal facies is characterized with the paleo-geomorphology analysis.The qualitative and quantitative reservoir predictions are carried out with attribute sensitivity analysis and seismic inversion,which will provide favorable zones for the subsequent exploration and development in the area.
引文
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[15] 王桂英,白雪莲,李咏梅,等.应用GeoEast系统预测煤层分布和厚度[J].石油地球物理勘探,2014,49(增刊1):184-191.WANG Guiying,BAI Xuelian,LI Yongmei,et al.Coal bed distribution and thickness prediction with GeoEast[J].Oil Geophysical Prospecting,2014,49(S1):184-191.
[16] Dai Hengchang.Parallel processing of prestack Kirchhoff time migration on a PC cluster[J].Computers & Geosciences,2005,31(7):891-899.
[17] Yao Liankai,Ji Xiaohui,Liu Shuai,et al.Parallel implementation and performance comparison of BiCGStab for massive sparse linear system of equations on GPU libraries[C].UIC-ATC-ScalCom-CBDCom-IoP,2015,603-608.
[18] Panetta J,Teixeira T,de Souza Filho P R P,et al.Accelerating time and depth seismic migration by CPU and GPU cooperation[J].International Journal of Parallel Programming,2012,40(3):290-312.
[19] Shi Xiaohua,Li Chuang,Wang Shihu.Computing prestack Kirchhoff time migration on general purpose[J].Computers & Geosciences,2011,37(10):1702-1710.
[20] Rahmad M H,Meng S S,Karuppiah E,et al.Compa-rision of CPU and GPU implementation of computing absolute difference[C].International Conference on Control System,Computing and Engineering(ICCSCE),IEEE,Penang,Malaysia,2011,132-137.
[2] 张荫本.四川盆地二叠系中的白云岩化[J].石油学报,1982,3(1):29-33.ZHANG Yinben.Dolomitization in Permian rocks in Sichuan Basin[J].Acta Petrolei Sinica,1982,3(1):29-33.
[3] 沈平,张健,宋家荣,等.四川盆地中二叠统天然气勘探新突破的意义及有利勘探方向[J].天然气工业,2015,35(7):1-9.SHEN Ping,ZHANG Jian,SONG Jiarong,et al.Significance of new breakthrough in and favorable targets of gas exploration in the Middle Permian system,Sichuan Basin[J].Natural Gas Industry,2015,35(7):1-9.
[4] 杨光,汪华,沈浩,等.四川盆地中二叠统储层特征与勘探方向[J].天然气工业,2015,35(7):10-16.YANG Guang,WANG Hua,SHEN Hao,et al.Cha-racteristics and exploration prospects of Middle Permian reservoirs in the Sichuan Basin[J].Natural Gas Industry,2015,35(7):10-16.
[5] 陈宗清.论四川盆地中二叠统栖霞组天然气勘探[J].天然气地球科学,2009,20(3):325-334.CHEN Zongqing.Discussion on gas exploration of Middle Permian Qixia Formation,Sichuan Basin[J].Natural Gas Geoscience,2009,20(3):325-334.
[6] 黄先平,杨天泉,张红梅.四川盆地下二叠统沉积相及其勘探潜力区研究[J].天然气工业,2004,24(1):10-12.HUANG Xianping,YANG Tianquan,ZHANG Hongmei.Research on the sedimentary facies and exploration potential areas of Lower Permian in Sichuan Basin[J].Natural Gas Industry,2004,24(1):10-12.
[7] 陈宗清.四川盆地中二叠统茅口组天然气勘探[J].中国石油勘探,2007,12(5):1-11.CHEN Zongqing.Exploration for natural gas in Middle Permian Maokou Formation of Sichuan Basin[J].China Petroleum Exploration,2007,12(5):1-11.
[8] 赵明章,范雪辉,刘春芳,等.利用构造导向滤波技术识别复杂断块圈闭[J].石油地球物理勘探,2011,46(增刊1):128-133.ZHAO Mingzhang,FAN Xuehui,LIU Chunfang,et al.Complex fault-block traps identifiction with structure-oriented filter[J].Oil Geophysical Prospecting,2011,46(S1):128-133.
[9] 刘传虎.地震相干分析技术在裂缝油气藏预测中的应用[J].石油地球物理勘探,2011,36(2):238-244.LIU Chuanhu.Appplication of seismic coherent analysis technology to prediction of fractured reservoir[J].Oil Geophysical Prospecting,2001,36(2):238-244.
[10] 刘国萍,游瑜春,冯琼,等.元坝长兴组生物礁储层精细雕刻技术[J].石油地球物理勘探,2017,52(3):583-590.LIU Guoping,You Yuchun,Feng Qiong,et al.Fine depict of reef reservoirs in Changxing Formation,Yuanba area[J].Oil Geophysical Prospecting,2017,52(3):583-590.
[11] 朱广生.地震资料储层预测方法[M].北京:石油工业出版社,1995,224-236.
[12] 邢成智,胡正舟,蔡义峰,等.GeoeEast 解释系统在滴南凸起中段储层预测中的应用[J].石油地球物理勘探,2014,49(增刊1):120-125.XING Chengzhi,HU Zhengzhou,CAI Yifeng,et al.Reservoir prediction with GeoEast in the middle of Dinan uplift[J].Oil Geophysical Prospecting,2014,49(S1):120-125.
[13] 赵小辉,王晓辉,于宝利,等.GeoEast特色解释技术在玛湖1井区的应用[J].石油地球物理勘探,2014,49(增刊1):179-183.ZHAO Xiaohui,WANG Xiaohui,YU Baoli,et al.GeoEast special interpretation techniques used in the area of Well Mahu1[J].Oil Geophysical Prospecting,2014,49(S1):179-183.
[14] 张繁昌,刘汉卿,钮学民,等.褶积神经网络高分辨率地震反演[J].石油地球物理勘探,2014,49(6):1165-1169.ZHANG Fanchang,LIU Hanqing,NIU Xuemin,et al.Hight resolution seismic inversion by convolutional neural network[J].Oil Geophysical Prospecting,2014,49(6):1165-1169.
[15] 王桂英,白雪莲,李咏梅,等.应用GeoEast系统预测煤层分布和厚度[J].石油地球物理勘探,2014,49(增刊1):184-191.WANG Guiying,BAI Xuelian,LI Yongmei,et al.Coal bed distribution and thickness prediction with GeoEast[J].Oil Geophysical Prospecting,2014,49(S1):184-191.
[16] Dai Hengchang.Parallel processing of prestack Kirchhoff time migration on a PC cluster[J].Computers & Geosciences,2005,31(7):891-899.
[17] Yao Liankai,Ji Xiaohui,Liu Shuai,et al.Parallel implementation and performance comparison of BiCGStab for massive sparse linear system of equations on GPU libraries[C].UIC-ATC-ScalCom-CBDCom-IoP,2015,603-608.
[18] Panetta J,Teixeira T,de Souza Filho P R P,et al.Accelerating time and depth seismic migration by CPU and GPU cooperation[J].International Journal of Parallel Programming,2012,40(3):290-312.
[19] Shi Xiaohua,Li Chuang,Wang Shihu.Computing prestack Kirchhoff time migration on general purpose[J].Computers & Geosciences,2011,37(10):1702-1710.
[20] Rahmad M H,Meng S S,Karuppiah E,et al.Compa-rision of CPU and GPU implementation of computing absolute difference[C].International Conference on Control System,Computing and Engineering(ICCSCE),IEEE,Penang,Malaysia,2011,132-137.