THE FEATURES OF THE CARBONATE RESERVOIR OF QIULITAGE GROUP BETWEEN UPPER CAMBRIAN AND LOWER ORDOVICIAN IN BACHU AREA
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摘要: 巴楚地区上寒武-下奥陶统丘里塔格群碳酸盐岩储层是区内主要储层段,为一套局限台地沉积,其中"云岩、灰岩互层段"、"白云岩段"为有利储层层位。受沉积相、成岩作用和构造作用影响,储集空间类型主要是次生孔隙、溶洞和裂缝,尤其是溶蚀作用与断裂改造作用,使丘里塔格群碳酸盐岩形成优质储层。分布在南部康塔库木-玛扎塔格构造带已获得高产工业气流。Abstract: The carbonate reservoir of Qiulitage Group between Upper Cambrian and Lower Ordovician is the main reservoir member in this area.It is a suit of local platform sediment.The horizon of the vantage reservoir situated in the member consists of cross bedding of dolomite and limestone and the dolomite member. Because of the influence of sedimentary facies,diagenesis and tectonism, induced porosity,dissolved cavern and fracture are the dominant types of the reservoir space.Especially because of the influence of the action of dissolution and the reconstruct of faults,the carbonate rock of Qiulitage Group had become highclass reservoirs.They are distributed in the south of the Kangtakumu-mazhata structural zone and high yield commercial gas had been achieved in them.
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Key words:
- dolomite /
- reservoir space /
- vantage reservoir /
- dissolution /
- fracture
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