工程科学学报，第38卷，增刊1：224-231,2016年6月 Chinese Journal of Engineering,Vol.38,Suppl.1:224-231,June 2016 DOI:10.13374/j.issn2095-9389.2016.s1.037:http://journals.ustb.edu.cn 盐津-珙县地区五峰组-龙马溪组页岩气富集成藏 条件 梁萍萍，王红岩23》，赵群》，张琴2》，王南2》，肖前华) 1)中国科学院大学渗流流体力学研究所，廊坊0650072)中石油勘探开发研究院廊坊分院，廊坊065007 3)国家能源页岩气研发（实验）中心，廊坊0650074)重庆科技学院石油与天然气工程学院，重庆401331 ☒通信作者，E-mail:296074368@q4.com 摘要利用野外观察及实验数据资料，对盐津一珙县地区五峰组一龙马溪组页岩气形成条件进行分析，并探讨其富集成藏 的主控因素.研究结果表明盐津一珙县地区五峰组一龙马溪组下部黑色页岩是深水陆棚沉积产物，该区页岩气“甜点段”五峰 组一段一四段和龙马溪组一段一五段发育完整，有机碳质量分数在2.7%~6.0%之间，主要为中高一高有机碳含量，富有机 质黑色页岩厚度分布在30~50m.在高含气层位，纳米级有机质孔和黄铁矿晶间孔大量发育，平均孔隙度为2.28%~ 3.48%,为吸附气和游离气提供良好的储集空间.研究区内构造强度较弱，通天断层少，具有良好的顶底板条件，压力系数平 均大于1.0，因而保存条件良好.分析表明，高有机碳含量、纳米级孔隙发育、高脆性矿物含量、高压力系数是盐津一珙县地区 页岩气富集成藏的主控因素. 关键词盐津一珙县地区：五峰组一龙马溪组：成藏条件：主控因素 分类号TE122 Accumulation condition for Wufeng-Longmaxi Formation shale gas of Yanjin-Gongxian area LIANG Ping ping,WANG Hong-yan,ZHAO Qun,ZHANG Qin,WANG Nan,XIAO Qian-hua 1)Institute of Porous Flow and Fluid Mechanic,China Academy of Science,Langfang 065007,China 2)Langfang Branch Research Institute of Petroleum Exploration and Development,Langfang065007,China 3)National Energy Shale Gas Research and Development Center,Langfang065007,China 4)School of Oil and Gas Engineering,Chongqing 401331,China Corresponding author,E-mail:296074368@qq.com ABSTRACT The formation conditions of shale gas in Wufeng-Longmaxi Formation of Yanjin-Gongxian area were analyzed on the basis of field observation and experimental data,and then the main factors for shale gas accumulation were discussed.Results show that black shale at the bottom of Wufeng-Longmaxi Formation is a deep-water shelf deposit product.The dessert shale gas from the first stage of Wufeng to the fourth stage of Longmaxi was complete.The organic carbon content is between 2.7%-6.0%.Mainly for the high organic carbon content,the thickness of black shale rich in organic matter is 30-50m.In the high gas horizon,nanometer organic pores and pyrite intracrystalline pores are abundant,and the average rate of porosity is 2.28%-3.48%,providing a good reservoir space for the adsorbed gas and free gas.Structural strength in the research area is weak and large faults are less.There are good condi- tions of roof and floor.The pressure coefficient is more than 1,which reflects the suitable preservation condition.The main factors for shale gas accumulation are as follows:deep shelf sedimentary environment,high organic carbon content,abundant nanometer pores, 收稿日期：201601-16 基金项目：国家重点基础研究发展计划(973)项目“中国南方海相页岩气高效开发的基础研究”(2013CB228000):国家“十二五”重大专项“页 岩气勘探开发关键技术”项目(2011ZX05018).工程科学学报，第 38 卷，增刊 1: 224--231，2016 年 6 月 Chinese Journal of Engineering，Vol． 38，Suppl． 1: 224--231，June 2016 DOI: 10． 13374 /j． issn2095--9389． 2016． s1． 037; http: / /journals． ustb． edu． cn 盐津--珙县地区五峰组--龙马溪组页岩气富集成藏 条件 梁萍萍1) ，王红岩2，3) ，赵 群2，3) ，张 琴2，3) ，王 南2，3) ，肖前华4) 1) 中国科学院大学渗流流体力学研究所，廊坊 065007 2) 中石油勘探开发研究院廊坊分院，廊坊 065007 3) 国家能源页岩气研发( 实验) 中心，廊坊 065007 4) 重庆科技学院石油与天然气工程学院，重庆 401331  通信作者，E-mail: 296074368@ qq． com 摘 要 利用野外观察及实验数据资料，对盐津--珙县地区五峰组--龙马溪组页岩气形成条件进行分析，并探讨其富集成藏 的主控因素． 研究结果表明盐津--珙县地区五峰组--龙马溪组下部黑色页岩是深水陆棚沉积产物，该区页岩气“甜点段”五峰 组—段—四段和龙马溪组一段—五段发育完整，有机碳质量分数在 2. 7% ～ 6. 0% 之间，主要为中高--高有机碳含量，富有机 质黑色页岩厚度分布在 30 ～ 50 m． 在高含气层位，纳米级有机质孔和黄铁矿晶间孔大量发育，平均孔隙度为 2. 28% ～ 3. 48% ，为吸附气和游离气提供良好的储集空间． 研究区内构造强度较弱，通天断层少，具有良好的顶底板条件，压力系数平 均大于 1. 0，因而保存条件良好． 分析表明，高有机碳含量、纳米级孔隙发育、高脆性矿物含量、高压力系数是盐津--珙县地区 页岩气富集成藏的主控因素． 关键词 盐津--珙县地区; 五峰组--龙马溪组; 成藏条件; 主控因素 分类号 TE122 收稿日期: 2016--01--16 基金项目: 国家重点基础研究发展计划( 973) 项目“中国南方海相页岩气高效开发的基础研究”( 2013CB228000) ; 国家“十二五”重大专项“页 岩气勘探开发关键技术”项目( 2011ZX05018) ． Accumulation condition for Wufeng-Longmaxi Formation shale gas of Yanjin-Gongxian area LIANG Ping-ping1)  ，WANG Hong-yan2，3) ，ZHAO Qun2，3) ，ZHANG Qin2，3) ，WANG Nan2，3) ，XIAO Qian-hua4) 1) Institute of Porous Flow and Fluid Mechanic，China Academy of Science，Langfang 065007，China 2) Langfang Branch Ｒesearch Institute of Petroleum Exploration and Development，Langfang 065007，China 3) National Energy Shale Gas Ｒesearch and Development Center，Langfang 065007，China 4) School of Oil and Gas Engineering，Chongqing 401331，China  Corresponding author，E-mail: 296074368@ qq． com ABSTＲACT The formation conditions of shale gas in Wufeng-Longmaxi Formation of Yanjin-Gongxian area were analyzed on the basis of field observation and experimental data，and then the main factors for shale gas accumulation were discussed． Ｒesults show that black shale at the bottom of Wufeng-Longmaxi Formation is a deep-water shelf deposit product． The dessert shale gas from the first stage of Wufeng to the fourth stage of Longmaxi was complete． The organic carbon content is between 2. 7% --6. 0% ． Mainly for the high organic carbon content，the thickness of black shale rich in organic matter is 30--50 m． In the high gas horizon，nanometer organic pores and pyrite intracrystalline pores are abundant，and the average rate of porosity is 2. 28% --3. 48% ，providing a good reservoir space for the adsorbed gas and free gas． Structural strength in the research area is weak and large faults are less． There are good condi￾tions of roof and floor． The pressure coefficient is more than 1，which reflects the suitable preservation condition． The main factors for shale gas accumulation are as follows: deep shelf sedimentary environment，high organic carbon content，abundant nanometer pores