CAJ | 학술논문

采用两步法合成了无水压裂液交联剂烷基磷酸酯,其最佳合成条件为：磷酸三乙酯和P2 O5、混合醇的投料摩尔比为1∶1∶4,在80℃时反应5 h,产物二烷基磷酸酯的产率高达71.3%。采用络合铁水溶液作为活化剂,其配方为：柠檬酸钠30%,乙二醇10%,硫酸铁30%,去离子水30%。利用正己烷为基液,烷基磷酸酯PA-2为交联剂,络合铁水溶液FC-1为活化剂,制备出低碳烃无水压裂液,并探究了交联剂与活化剂的添加量对压裂液性能的影响。结果表明,随着交联剂PA-2用量的增加,成胶时间显著缩短,粘度逐渐增大。当交联剂PA-2用量为2．5%,活化剂FC-1用量为4%时,成胶时间为116 s,压裂液的粘度高达440.5 mPa·s。在80℃、剪切速率170 s-1的条件下剪切1 h,该压裂液粘度仍在100 mPa·s以上,表明该压裂液的耐温耐剪切性能良好。
채용량보법합성료무수압렬액교련제완기린산지,기최가합성조건위：린산삼을지화P2 O5、혼합순적투료마이비위1∶1∶4,재80℃시반응5 h,산물이완기린산지적산솔고체71.3%。채용락합철수용액작위활화제,기배방위：저몽산납30%,을이순10%,류산철30%,거리자수30%。이용정기완위기액,완기린산지PA-2위교련제,락합철수용액FC-1위활화제,제비출저탄경무수압렬액,병탐구료교련제여활화제적첨가량대압렬액성능적영향。결과표명,수착교련제PA-2용량적증가,성효시간현저축단,점도축점증대。당교련제PA-2용량위2．5%,활화제FC-1용량위4%시,성효시간위116 s,압렬액적점도고체440.5 mPa·s。재80℃、전절속솔170 s-1적조건하전절1 h,해압렬액점도잉재100 mPa·s이상,표명해압렬액적내온내전절성능량호。
The alkyl phosphate ester as fracturing fluid crosslinking agent was compounded with two-steps. And the optimum reaction condition was obtained. Triethylphosphate,phosphorus pentoxide and mixed alco-hol reacted for 5 h at 80 ℃,with the mole ratio of 1∶1∶4. The yield of target product,two alkyl phosphate, was 71. 3%. Then activating agent,complexing iron solution was prepared,including 30% trisodiun citrate, 10% ethanediol,30% ferric sulfate and 30% deionized water. Finally the alkyl phosphate ester (PA-2) as crosslinking agent and the activating agent (FC-1) were added in to the n-hexane to obtain waterless frac-turing fluid with low carbon. It was concluded that the gelation time shortened obviously and the viscosity improved gradually as the increasing amount of crosslinking agent(PA-2). When the amount of crosslinking agent(PA-2) and activating agent (FC-1) was 2. 5% and 4% respectively, the gelation time was 116 sec-onds and viscosity was 440. 5 mPa·s at room temperature. Shearing for 1 h at the shear rate of 170 s-1 ,the viscosity of the fracturing fluid was still over 100 mPa·s as temperature increased from 40℃ to 80℃. This was showed that the heat and shear tolerance of the fracturing fluid were good.