摘要
嘉二段是川东北地区嘉陵江组主要储层发育段和含气层段。区内嘉二段主要为各类云岩储层,其发育受沉积相及成岩作用双重影响;储层低孔、低渗,以Ⅲ类储层为主,储集类型主要为裂缝—孔隙型。嘉二储层具有层多、层薄、纵横向变化大的特点,纵向上主要包括嘉二2和嘉二1两套储层,横向上温泉井—罗家寨和铁山—亭子铺地区是川东北地区嘉二储层发育区,也是寻找嘉二气藏的有利区块。
Jialingjiang 2 Member is the major reservoir-developed and gas-bearing interval in Jialingjiang Formation, northeastern Sichuan Basin. All types of dolomites are dominated in the member and its development is influenced by both sedimentary facies and diagenesis. Most reservoir characterized by low porosity and low permeability belongs to Type III. Reservoir is fractured-porous type. Reservoir in the member is characterized by multi-layer and thin layer as well as variable cross. Longitudinally both member 22 and 21 of Jialingjiang Formation are included; laterally Wenquanjing-Luojiazhai and Tieshan-Tingzipo are reservoir-developed areas in northeastern Sichuan Basin, which is a favorable block to find Jialingjiang 2 Reservoir.
出处
《天然气勘探与开发》
2008年第3期1-5,共5页
Natural Gas Exploration and Development
关键词
四川盆地
川东北
嘉陵江组
嘉二段
储层特征
Sichuan Basin, Northeastern Sichuan Basin, Jialingjiang Formation, Jialingjiang 2 member, reservoir characteristics
