CAJ | 학술논문

压裂液的流变性是影响其压裂效果的重要因素之一。针对胜利油田滨661块研制的瓜胶与交联剂FYC-160形成的压裂液体系 GRJ-11,研究其流变性、耐温性和抗剪切性,并利用扫描电镜观测了其微观结构。结果表明,此压裂液体系具有良好的增黏能力和抗剪切效果,170 s-1、剪切40 min后,体系黏度仍在90 mPa·s 左右,且内部形成了稳定的三维交联网络结构。对此压裂液在滨661块沙四段12口井进行了整体压裂投产,平均每口井日产油5.53 t,平均含水率为39.74%,压裂后单井获得较高产能,满足于地层压裂的要求。
압렬액적류변성시영향기압렬효과적중요인소지일。침대성리유전빈661괴연제적과효여교련제FYC-160형성적압렬액체계 GRJ-11,연구기류변성、내온성화항전절성,병이용소묘전경관측료기미관결구。결과표명,차압렬액체계구유량호적증점능력화항전절효과,170 s-1、전절40 min후,체계점도잉재90 mPa·s 좌우,차내부형성료은정적삼유교련망락결구。대차압렬액재빈661괴사사단12구정진행료정체압렬투산,평균매구정일산유5.53 t,평균함수솔위39.74%,압렬후단정획득교고산능,만족우지층압렬적요구。
The rheology of fracturing fluid is one of the important factors that influence the fracturing effect.The rheology, heat resistance and shear resistance of fracturing fluid (GRJ-1 1 )were studied which was consisted with guar gum and crosslinking agent(FYC-160)in Shengli oilfield.Its microstructure was observed by scanning electron microscopy (SEM).The results of experimental tests showed that,the fracturing fluid system had higher property of viscosifying ability,shear resistance and more perfect three-dimensional cross-linked network structure.The viscosity of the fracturing fluid could keep about 90 mPa·s after shearing at 170 s-1 for 40 min.The guar gum fracturing fluid system was applied to the field successfully for 12 oil wells,and the average oil production was 5.53 t/d and the average water cut was 39.74% after dealing with 12 wells. The GRJ-1 1 system could match the need of the well with the low reservoir permeability of Es-4 of Bin 6 6 1 black.