超低渗透油藏体积压裂技术研究与试验

随着低渗、超低渗油藏的开发,由于受到储层条件、注采井网、压裂工艺等多重限制,单一增加缝长来提高超低渗油藏产量效果不明显,常规压裂工艺改造难以实现该类油藏的有效开发。混合水体积压裂技术通过"大液量、高排量、低砂比"增加缝内净压力,有效扩大储层改造体积,从而提高措施增油能力,为有效提高单井产量提供了新思路、新方法。

Research and Test of Volume Fracturing Technology for Ultra Low Permeability Reservoirs

With the development of low permeability and ultra low permeability reservoirs, due to multiple constraints of reservoir conditions, injection production well pattern, fracturing process and so on, to only increase the fracture length to improve the yield of low permeability reservoirs has not obvious effect, it is difficult to transform the conventional fracturing process to achieve the effective development of this type of reservoirs. Mixed water volume fracturing technique with the ＂great liquid quantity, high output, and low sand ratio＂ can increase the net pressure in the fractures to effectively expand the reservoir volume, thereby it can improve the oil stimulation capacity.