马朗凹陷二叠系芦草沟组页岩气储层特征及评价  

Characteristics and Evaluation of Permian Lucaogou Shale Gas Reservoir in Malang Sag

作　　者：杜世飞 田继军[1] 杨曙光 李乐[3] 来鹏 

机构地区：[1]新疆大学地质与矿业工程学院,新疆乌鲁木齐830047 [2]新疆煤田地质局,新疆乌鲁木齐830001 [3]贵州省煤田地质局实验室,贵州贵阳550008

出　　处：《新疆地质》2016年第4期546-551,共6页Xinjiang Geology

基　　金：新疆维吾尔自治区科技支撑项目新疆页岩气形成机理与富集规律(201333108)资助

摘　　要：据马朗凹陷近几年钻井、测井、岩心及镜下图像资料，以北美及国内最新页岩气储层评价标准为依据，从泥页岩层的埋深、单层厚度、有机质类型、丰度、成熟度及测井等方面对该区烃源岩特征进行评价。马朗凹陷二叠系芦草沟组烃源岩层埋深约2500m，单层厚1—100m，裂隙较发育。有机质类型以Ⅱ～Ⅰ2为主，丰度平均值4．4％，有机质成熟度最高1．16％，处于低成熟-成熟阶段。测井曲线在烃源岩层段呈高自然伽马、高声波时差、高电阻率、低密度特征，即“三高一低”。马朗凹陷二叠系芦草沟组泥页岩层特征与北美页岩气产量较高的Barnett和Lewis页岩，及中国四川盆地的筇竹寺组和龙马溪组页岩特征极相似，是未来页岩气勘探优选勘探区。Malang sag utilization of drilling in the oil sector in recent years, well logging, core and microscopic image data to the North American and domestic new shale gas reservoir evaluation criteria, from mud shale depth, single thickness, organic matter type, abundance, maturity and other aspects of the logging in the region resource potential source rocks were analyzed and evaluated. Malang depression Lucaogou Permian source rocks at depth of about 2 500 m, layer thickness of 1 to more than 100 meters, more developed fissures; organic type to Ⅱ - Ⅰ 2 mainly abundance with an average of 4.4 percent, organic maturation the highest was 1.16%, in the low maturitymaturity; logs in the hydrocarbon source rock section presents a high natural gamma, high acoustic travel time, high resistivity, density characteristics, namely the ＂three high and one low.＂ Malang depression above the Permian Lucaogou mud shale characteristics and higher shale gas production in North America and Lewis Barnett Shale, as well as China and the Sichuan Basin Qiongzhusi group Longmaxi they seem extremely shale characteristics, is the future of shale gas exploration workers preferred favorable exploration area should pay attention to the land.

关 键 词：马朗凹陷 二叠系芦草沟组 页岩气 烃源岩 三高一低 

分 类 号：P618.13[天文地球—矿床学]