塔河油田性质和塔里木碳酸盐岩油气勘探方向

THE CHARACTERISTICS OF TAHE OILFIELD AND THE OIL GAS EXPLORATION DIRECTION IN THE CARBONATES OF TARIM BASIN

塔河油田奥陶系油藏发育岩溶缝洞网络型储集体 ,可获高产稳产 ,但具有明显的不规则状和内部不均一性。在具有优越烃源岩情况下古隆起上岩溶形成的储存空间是其成藏的基本条件。塔里木盆地内部的勘探方向为 :明确海相碳酸盐岩为主攻目标 ,逼近烃源岩 ;立足长期发育的古隆起和古斜坡 ,首先是全方位探索阿库勒凸起 ;借鉴塔河油田成藏中的有利条件 ,但不为其所限 ,扩大探索的视野 ;

The Ordovician reservoirs develop the networks consisting of karst cracks and hole in the Tarim Oil Field,in which the high and stable production can be attained with obvious irregularity and inner heterogeneity.Under the conditions with good hydrocarbon resource rocks,the storing space formed in the karst of palaeohighs,is the basic condition for the reservoir formation.The exploration direction in the inner part of Tarim Basin is as followed:The first is to clarify the marine carbonates as the main target and to approach the hydrocarbon resource rocks;the second is,with the basis of long developed palaeohighs and palaeoslopes,to explore the Akule high comprehensively;the third is,using as the reference the favorable conditions of reservoir formation in the Tarim oil field without its limitation,to expand the exploring field of vision with attention to the hydrocarbon bearing dolomites.