塔里木盆地牙哈—英买力地区寒武系—奥陶系碳酸盐岩储层成因类型、特征及油气勘探潜力  

Genesis Classification and Characteristics of Cambrian-Ordovician Carbonate Reservoirs and Petroleum Exploration Potential in Yaka-Yengimahalla Area,Tarim Basin

作　　者：沈安江[1] 王招明[2] 郑兴平[1] 贺晓苏[1] 郑多明[2] 

机构地区：[1]中国石油勘探开发研究院杭州地质研究所 [2]中国石油塔里木油田分公司

出　　处：《海相油气地质》2007年第2期23-32,共10页Marine Origin Petroleum Geology

摘　　要：牙哈—英买力地区是塔北隆起上的主要油气富集区,古潜山风化壳型储层的观点一直主导着该地区寒武系—奥陶系碳酸盐岩油气勘探的思路。但储层精细描述揭示了牙哈—英买力地区除古潜山风化壳型储层外,还发育有暴露浅滩型、层间古岩溶型、白云岩型储层。其中位于古潜山面之下经风化作用改造的白云岩型储层是最有勘探价值的,勘探成功率高。其次是暴露浅滩型储层,油藏类型有早成藏残留型和晚成藏型。暴露浅滩型、层间古岩溶型和白云岩型储层也是很有勘探价值的储层类型。早成藏型原生油气藏,位于寒武系—奥陶系与志留系呈假整合接触的地区,与古潜山无关。古潜山风化壳型储层可以形成晚成藏型油气藏,但目前试油结果均为水层,值得进一步探索。Oil and gas are concentrated in Yaka-Yengimahalla Area in Tabei Uplift, where the Cambdan-Ordovician carbonate reservoirs have been before taken for weathering crust of buried paleohill in exploration attempt. Recent fine description of reservoirs reveals that there are other types of reservoirs such as exposed shoal, interbedded paleo-karst and dolostone reservoirs. The weathering-reformed dolostone reservoir beneath buried paleohill surface is best expectant to exploration success, and the exposed shoal reservoir is next. The exposed shoal reservoir can be classified into the remnant one of early hydrocarbon accumulation and the one of late hydrocarbon accumulation. The primary reservoir of early hydrocarbon accumulation is irrelative with the buried paleohill in this area. The weathering crust reservoir of buried paleohill may be late accumulated but the producing test shows it is an aquifer.

关 键 词：塔里木盆地 寒武纪 奥陶纪 碳酸盐岩 储集层 储集层特征 油气勘探潜力 

分 类 号：TE112.2[石油与天然气工程—油气勘探]