致密砂岩气田盖层封闭能力综合评价——以四川盆地广安气田为例

doi:10.11743/ogg20130305

Abstract

Abstract: In this paper,we chose several parameters that are closely related with sealing capacity of cap rock,such as cap rock thickness,displacement pressure,pressure coefficient,damage of fault to cap rock and vertical sealing ability.In combination with the concept of sealing effectiveness of cap rock,we proposed a comprehensive evaluation method of cap rock sealing capability.Based on statistics of reserve abundance and cap rock attributes of large tight sandstone gasfields in China,we took the lower limit of each cap rock evaluation parameter necessary for the formation of large gasfield with high reserve abundance as its homogenization standard value.Case study of the regional cap rock of the 5th Member of Xujiahe Formation in Guang'an gas field shows that the cap rock thickness is 30-200 m,displacement pressure is 5.5-9.5 MPa,the pressure coefficient is 1.05-1.50,the fault activity is strong,vertical sealing capacity of the fault is poor,and the sealing effectiveness of cap rock is good.Calculation with the comprehensive evaluation formula obtains a composite sealing capacity evaluation index in the range of 0.04-0.24,indicating that the cap rock of the 5th Member of Xujiahe Formation is capable of sealing gas in reservoirs with ultra-low reserve abundance.The index is high in the west but low in the east as a whole.The play fairways predicted by this method basically coincide with the present exploration results of the 5^th Member in the Xujiahe Formation.

Key words: sealing ability, cap rock, tight sandstone gasfield, Xujiahe Formation, Guang’an gasfield, Sichuan Basin

CLC Number:

TE121.1

Shi Jijian, Li Lili, Lü Yanfang, Yang Jun, Li Shouying. Comprehensive evaluation on the sealing capability of cap rocks in tight sandstone gasfield—a case study from Guang’an gasfield in the Sichuan Basin[J]. Oil & Gas Geology, 2013, 34(3): 307-314.

References

[1] 王晓梅,赵靖舟,刘新社,等.苏里格气田西区致密砂岩储层地层水分布特征[J].石油与天然气地质,2012,33(5):802-810. Wang Xiaomei,Zhao Jingzhou,Liu Xinshe,et al.Distribution of formation water in tight sandstone reservoirs of western Sulige gas field,Ordos Basin[J].Oil & Gas Geology,2012,33(5).802-810. [2] 吕延防,付广,高大岭,等.油气藏封盖研究[M].北京:石油工业出版社,1996:4-30. Lü Yanfang,Fu Guang,Gao Daling,et al.The sealing ability study of oil and gas reservoirs[M].Beijing:Petroleum Industry Press,1996:4-30. [3] 张林晔,包友书,刘庆,等.盖层物性封闭能力与油气流体物理性质关系探讨[J].中国科学:地球科学,2010,40(1):28-33. Zhang Linye,Bao Youshu,Liu Qing,et al.Effects of hydrocarbon physical properties on caprock's capillary sealing ability[J].Science China:Earth Science,2010,40(1):28-33. [4] 张蕾.盖层物性封闭力学机制新认识[J].天然气地球科学,2010,21(1):112-116. Zhang Lei.Reevaluation of caprock physical sealing mechanic[J].Natural Gas Geoscience,2010,21(1):112-116. [5] 张文旗,王志章,侯秀林,等.盖层封盖能力对天然气聚集的影响——以鄂尔多斯盆地大牛地气田大12井区为例[J].石油与天然气地质,2011,32(6):882-889. Zhang Wenqi,Wang Zhizhang,Hou Xiulin,et al.Influences of caprock sealing capacity on natural gas accumulation:an example from D-12 wellblock of Daniudi gas field in Ordos Basin[J].Oil & Gas Geology,2011,32(5):882-889. [6] 付广,胡明,于丹.火山岩盖层类型及封气能力——以松辽盆地徐家围子断陷为例[J].吉林大学学报(地球科学版),2010,40(2):237-244. Fu Guang,Hu Ming,Yu Dan.Volcanic cap rock type and evaluation of sealing gas ability:an example of Xujiaweizi Depression[J].Journal of Jilin University(Earth Science Edition),2010,40(2):237-244. [7] 吕延防,付广,于丹.中国大中型气田盖层封盖能力综合评价及其对成藏的贡献[J].石油与天然气地质,2005,26(6):742-745. Lü Yanfang,Fu Guang,Yu Dan.Comprehensive evaluation of sealing ability of cap rock in China's large and medium gas fields and their contribution to gas accumulation[J].Oil & Gas Geology,2005,26(6):742-745. [8] 史集建,吕延防,付广,等.松辽盆地徐家围子断陷火山岩盖层封气能力综合定量评价[J].石油学报,2011,32(3):424-431. Shi Jijian,Lü Yanfang,Fu Guang,et al.Synthetically and quantitatively assessing gas-sealing ability of volcanic cap rocks in the Xujiaweizi Sag of the Songliao Basin[J].Acta Petrolei Sinica,2011,32(3):424-431. [9] 史集建,付广,吕延防,等.歧口凹陷沙河街组一段中部区域盖层封气能力综合评价[J].石油与天然气地质,2011,32(5):671-681. Shi Jijian,Fu Guang,Lü Yanfang,et al.Comprehensive evaluation of regional seal in middle of the first member of Shahejie Fm in Qikou Sag[J].Oil & Gas Geology,2011,32 (5):671 -681. [10] 康竹林,傅诚德,崔淑芬,等.中国大中型气田概论[M].北京:石油工业出版社,2000. Kang Zhulin,Fu Chengde,Cui Shufen,et al.Generality of Chinese large and medium gas fields[M].Beijing:Petroleum Industry Press,2000. [11] 吕延防,沙子萱,付晓飞,等.断层垂向封闭性定量评价方法及其应用[J].石油学报,2007,28(5):34-38. Lü Yanfang,Sha Zixuan,Fu Xiaofei,et al.Quantitative evaluation method for fault vertical sealing ability and its application[J].Acta Petrolei Sinica,2007,28(5):34-38. [12] Yielding G,Freeman B.Quantitative fault seal prediction[J].AAPG Bulletin,1997,81(6):898-915. [13] 李吉君,崔会英,卢双舫,等.川中广安地区须家河组煤系烃源岩生气特征[J].吉林大学学报(地球科学版),2010,40(2):273-278. Li Jijun,Cui Huiying,Lu Shuangfang,et al.Generation characteristics of natural gas from the coal measures in Guang'an area of central Sichuan Basin[J].Journal of Jilin University(Earth Science Edition),2010,40(2):273-278. [14] 赵文智,王红军,徐春春,等.川中地区须家河组天然气藏大范围成藏机理与富集条件[J].石油勘探与开发,2010,37(2):146-157. Zhao Wenzhi,Wang Hongjun,Xu Chunchun,et al.Reservoir-forming mechanism and enrichment conditions of the extensive Xujiahe Formation gas reservoirs,central Sichuan Basin[J].Petroleum Exploration & Development,2010,37(2):146-157. [15] 卞从胜,王红军,尹平,等.广安气田须家河组天然气大面积成藏的条件[J].天然气工业,2009,9(6):19-22. Bian Congsheng,Wang Hongjun,Yin Ping,et al.Formation conditions of large-scale gas accumulation in the Xujiahe formation of Guang'an gas field[J].Natural Gas Industry,2009,29(6):19-22. [16] 郝国丽,柳广弟,谢增业,等.广安气田上三叠统须家河组致密砂岩储层气水分布特征[J].中国石油大学学报(自然科学版),2010,34(3):1-7. Hao Guoli,Liu Guangdi,Xie Zengye,et al.Distribution characteristics of gas and water of tight sandstone gas reservoir in upper Triassic Xujiahe Formation of Guang'an gas field[J].Journal of China University of Petroleum,2010,34(3):1-7. [17] 王亮,牛成民,杨波,等.莱州湾凹陷沙三段含油气系统与有利勘探方向[J].断块油气田,2011,18(5):545-548. Wang Liang,Niu Chengmin,Yang Bo,et al.Petroleum system and favorable exploration targets of the third member of Shahejie Formation in Laizhouwan Depression[J].Fault-Block Oil & Gas Field,2011,18(5):545-548. [18] 付广,王立志.源断裂在断陷盆地油运聚成藏中的作用研究[J].断块油气田,2011,18(6):686-690. Fu Guang,Wang Lizhi.Effect of source faults in oil migration and accumulation in fault basin[J].Fault-Block Oil & Gas Field,2011,18(6):686-690. [19] 袁亚娟,夏斌,吕宝凤.柴达木盆地断裂组合特征及油气成藏意义[J].断块油气田,2011,18(2):212-216. Yuan Yajuan,Xia Bin,Lv Baofeng.Assemblage characteristics of faults and its significance to hydrocarbon accumulation in Qaidam Basin[J].Fault-Block Oil & Gas Field,2011,18(2):212-216.

Comprehensive evaluation on the sealing capability of cap rocks in tight sandstone gasfield—a case study from Guang’an gasfield in the Sichuan Basin

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