LNS地区须家河组须二段致密砂岩气藏有利区预测
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摘要
LNS须家河组二段致密砂岩气藏具有岩性致密、低孔低渗、非均质性强的特点。其砂岩含气储层与页岩夹层的声波传播速度特征相似,常规方法难以有效识别该类含气储层并刻画其平面展布。通过构造及小断层的精细解释确定有利的裂缝发育区,然后在拟声波反演滤除须二段泥质部分的基础上,利用低频增量属性对储层含气性进行检测以降低地震的多解性,在考虑构造裂缝发育程度、流体检测等因素的基础上,确定了研究区须二段有利勘探区域,并建立了有效的储层预测模式,为下一步勘探及井位部署工作提供支持。
The favourable fracture development area is determined through the fine interpretation of structure and faults. Then,after filtering the mud through pseudo-acoustic inversion,the gas potential of the reservoir of the 2nd member of Xujiahe formation in LNS area is detected using low frequency increment to decrease the seismic multiplicity. The favourable exploration targets in the 2nd member of Xujiahe formation are determined under considering structure,fracture development and fluid detection result. An effective reservoir prediction mode including fracture prediction and gas detection is established,which provides a technical support for further exploration and well deployment of the studied area.
The favourable fracture development area is determined through the fine interpretation of structure and faults. Then,after filtering the mud through pseudo-acoustic inversion,the gas potential of the reservoir of the 2nd member of Xujiahe formation in LNS area is detected using low frequency increment to decrease the seismic multiplicity. The favourable exploration targets in the 2nd member of Xujiahe formation are determined under considering structure,fracture development and fluid detection result. An effective reservoir prediction mode including fracture prediction and gas detection is established,which provides a technical support for further exploration and well deployment of the studied area.
引文
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[2]赵靖舟.非常规油气有关概念、分类及资源潜力[J].天然气地质科学,2012,23(3):393-406.ZHAO Jing-zhou.Conception,classification and resource potential of unconventional hydrocarbons[J].Natural Gas Geoscience,2012,23(3):393-406.
[3]张国生,赵文智,杨涛,等.我国致密砂岩气资源潜力、分布与未来发展地位[J].中国工程科学,2012,14(6):87-93.ZHANG Guo-sheng,ZHAO Wen-zhi,YANG Tao,et al.Resource evaluation,position and distribution of tight sandstone gas in China[J].Engineering Science,2012,14(6):87-93.
[4]陈会年,张卫东,谢麟元,等.世界非常规天然气的储量及开采现状[J].断块油气田,2010,17(4):439-442.CHEN Hui-nian,ZHANG Wei-dong,XIE Lin-yuan,et al.Reserves and development status of global unconventional natural gas[J].Fault-block Oil and Gas Field,2010,17(4):439-442.
[5]李建忠,郭彬程,郑民,等.中国致密砂岩气主要类型、地质特征与资源潜力[J].天然气地球科学,2012,23(4):607-615.LI Jian-zhong,GUO Bin-cheng,ZHENG Ming,et al.Main types,geological features and resource potential of tight sandstone gas in China[J].Natural Gas Geoscience,2012,23(4):607-615.
[6]杨威,谢增业,金惠,等.四川盆地上三叠统须家河组储层评价及天然气成藏机理[J].天然气工业,2010,30(12):11-15.YANG Wei,XIE Zeng-ye,JIN Hui,et al.Reservoir evaluation and pooling mechanism of the Xujiahe Formation in the Sichuan basin[J].Natural Gas Industry,2010,30(12):11-15.
[7]袁海锋,倪根生,邓小江.龙女寺构造须家河组天然气成藏主控因素[J].西南石油大学学报:自然科学版,2012,34(1):6-12.YUAN Hai-feng,NI Gen-sheng,DENG Xiao-jiang.Control factor of natural gas accumulation in Xujiahe Formation,Longnüsi structure,Sichuan basin[J].Journal of Southwest Petroleum University:Seience&Technology Edition,2012,34(1):6-12.
[8]童崇光.四川盆地构造演化与油气聚集[M].北京:地质出版社,1985.
[9]郑荣才,戴朝成,朱如凯,等.四川类前陆盆地须家河组层序一岩相古地理特征[J].地质论评,2009,55(4):484-495.ZHENG Rong-cai,DAI Chao-cheng,ZHU Ru-kai,et al.Sequence-based lithofacies and paleogeographic characteristics of Upper Triassic Xujiahe Formation in Sichuan basin[J].Geological Review,2009,55(4):484-495.
[10]张健,李国辉,谢继容,等.四川盆地上三叠统划分对比研究[J].天然气工业,2006,26(1):12-15.ZHANG Jian,LI Guo-hui,XIE Ji-rong,et al.Stratigraphic division and correlation of Upper Triassic in Sichuan basin[J].Natural Gas Industry,2006,26(1):12-15.
[11]Nagy P B,Adler L,Bonner B P.Slow wave propagation in air-filled porous materials and natural rocks[J].Appl Phys Lett,1990,56(25):2504-2506.
[12]Boyle F A,Chotiros H P.Experimental detection of a slow acoustic wave in sediment atshallow grazing angles[J].J Acoust Soc Am,1991,89(4B):1982-1982.
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