塔中82井区优质储集层的控制因素  

Controlling Factors of Premium Reservoir Rock in Tazhong Wellblock-82

作　　者：罗春树[1] 杨海军[2] 蔡振忠[1] 邬光辉[2] 董立胜[2] 

机构地区：[1]北京大学地球与空间科学学院,北京100086 [2]中国石油塔里木油田分公司勘探开发研究院

出　　处：《新疆石油地质》2007年第5期589-591,共3页Xinjiang Petroleum Geology

摘　　要：塔中82井位于塔里木盆地塔中Ⅰ号断裂坡折带中段,是上奥陶统台缘礁滩体内侧低能相带中取得重大突破的千吨井,但是在其西侧部署的3口井均未获得工业油气流。通过分析岩心、薄片、测井资料并结合地震资料的分析认为,塔中82井东西两侧溶蚀孔洞发育,但裂缝发育程度差异较大,塔中82井以东多期构造缝极其发育,裂缝不仅改造礁滩体储集层,而且使储集层渗透性更好,油气产量高,说明裂缝和次级断裂控制着本区储集层的发育、控制着本区的油气成藏,这对研究礁滩体储集层和井位部署有重要的指导意义。Well Tazhong-82 is located in the middle segment of Tazhong No. 1 slope break belt in Tarim basin, which is a one-thousandton well, a major breakthrough in low-energy zone inside the shelf-edged composite of reefs and banks of Upper Ordovician in 2005. But none of commercial oil-gas flow has been found from other 3 wells in west of Well Tachong-82. The analyses of core, thin section, well log data and seismic information indicate that corrosive caverns are developed in east and west sides of Well Tazhong-82, but the development of fracture differs from place to place. There exist very developed multistage structural fractures in east of Well Tazhong-82, which not only change the reservoir quality of reefs and banks, but also allow this reservoir permeability to be better, obtaining higher oilgas production. It suggests that it is fracture or secondary fault that controls the development of the reservoir rocks and hydrocarbon accumulation in this area. This paper can be as a guide for studying the reservoir rock and the well location in this area.

关 键 词：塔里木盆地 塔中Ⅰ号断裂 坡折带 礁滩体 走滑断裂 岩溶储集层 

分 类 号：TE112.221[石油与天然气工程—油气勘探]