塔中1号气田碳酸盐岩储层酸蚀裂缝导流能力的研究

Acid Etched Fracture Flow Conductivity of Carbonate Reservoir of TaZhong 1 Gas Field

塔中1号气田主要为碳酸盐岩储层,酸化压裂是碳酸盐岩油气藏提高单井产量的常用增产工艺措施之一,酸压的导流能力则是评价酸化压裂施工有效性的主要指标。针对塔中1号气田碳酸盐岩储层,采用自行研制的改进API型酸蚀裂缝导流能力试验仪,综合研究了不同缝宽、不同流量、不同温度、不同用酸量等工艺参数对酸蚀裂缝导流能力的影响,为以后塔中其它地区的酸压储层改造提供了实验依据,对同类型地区的酸压改造具有非常重要的参考和指导意义。

Tazhong 1 gas field is carbonate reservoir;acid fracturing is the important way of EOR on the carbonate oil and gas field;the flow conductivity is the leading indicator of evaluating the validity of the acid fracturing.In view of the reservoir,the effects of different fracture width,flow velocity,temperature and acid volume on the flow conductivity were researched by using API acid etched fracture flow conductivity test instrument which was manufactured independently.The experimental evidence was offered for the acid fracturing reforming of the other area of Tazhong carbonate reservoir,which plays an important role in the reforming of congener regions.