罗家寨气田飞仙关组储层特征及分类评价  

Reservoir characteristics and classification evaluation of Feixianguan Formation in Luojiazhai gas field

作　　者：张强[1] 贾长青 曾文 余杨康 徐昌海 陶佳丽 ZHANG Qiang;JIA Changqing;ZENG Wen;YU Yangkang;XU Changhai;TAO Jiali(Northeast Sichuan Operation Branch of Southwest Oil and Gas Field Company,PetroChina,Chengdu,Sichuan 610011,China;Chengdu Chuangyuan Oil&Gas Technology Development Co.,Ltd.,Chengdu,Sichuan 610500,China;Exploration&Development Research Institute of Southwest Oil and Gas Field Company,PetroChina,Chengdu,Sichuan 610095,China)

机构地区：[1]中国石油西南油气田公司川东北作业分公司,四川成都610011 [2]成都创源油气开发技术有限公司,四川成都610500 [3]中国石油西南油气田公司勘探开发研究院,四川成都610095

出　　处：《石油地质与工程》2023年第1期16-20,25,共6页Petroleum Geology and Engineering

摘　　要：四川盆地罗家寨气田飞仙关组是川东北地区发现的大型高含硫整装气田,但飞仙关组储层相对较高、储集性能差异大、储层分类不明确,制约了气藏的开发。综合利用钻井、测井、岩心以及分析化验等资料,对罗家寨气田飞仙关组气藏储层岩石学特征、储集空间类型、物性特征进行分析,最终对储层进行分类评价。结果表明:①罗家寨气田飞仙关组储集性能较好,具有储集性的岩类包括鲕粒溶孔云岩、砂屑溶孔云岩、细粉晶云岩以及部分鲕粒灰岩;②储集空间以各类溶蚀孔洞为主,裂缝发育较差;③储层平均孔隙度8.8%,平均渗透率59.85×10^(-3)μm^(2),平均排驱压力0.130 MPa,平均中值压力0.442 MPa,平均束缚水饱和度8.91%,属于高孔隙度、中高渗透率、低排驱压力、低束缚水储层;④罗家寨气田飞仙关组储层以Ⅱ+Ⅲ类为主,占比达82.25%。Feixianguan Formation of Luojiazhai gas field in Sichuan Basin is a large high sulfur gas field discovered in northeast Sichuan,but the gas reservoir development is restricted by its higher shale content,big difference on reservoir performance and unclear reservoir classification of.Based on drilling,logging,core and analytical data,the studies on its petrological characteristics,reservoir space types and physical properties have been carried out,and then the reservoirs have been classified and evaluated.The results show that:①The reservoir property is pood,and the rocks with reservoir ability include oolitic dissolved pore dolomite,arenaceous dissolved pore dolomite,fine silty dolomite and some oolitic limestone;②The reservoir space is dominated by various kinds of corrosion pores,and the fractures are poorly developed;③The average porosity,permeability,displacement pressure,median pressure,and irreducible water saturation are 8.8%,59.85×10^(-3)μm^(2),0.130 MPa,0.442 MPa and 8.91%respectively,belonging to a high porosity,medium-high permeability,low displacement pressure,low irreducible water reservoir;④The reservoirs are mainly of Type II+III,accounting for 82.25%.

关 键 词：罗家寨气田 飞仙关组 储集性能 物性特征 分类评价 

分 类 号：TE112.23[石油与天然气工程—油气勘探]