四元共聚物压裂液稠化剂的制备与性能评价  

Preparation and Performance Evaluation of Tetra-polymer Thickener for Fracturing Fluid

作　　者：谢艳新[1] 陈可可[1] 苏君慧 王辉[1] 杨倩[1] XIE Yanxin;CHEN Keke;SU Junhui;WANG Hui;YANG Qian(College of Chemistry and Chemical Engineering,Xinxiang University,Xinxiang,tfenan 453003,P R of China;Research Institute of Petroleum Engineering,Zhon~uan Oilfield Braneh Company,Sinopec,Puyang,Henan 457000,P R of China)

机构地区：[1]新乡学院化学化工学院,河南新乡453003 [2]中国石化中原油田分公司石油工程技术研究院,河南濮阳457001

出　　处：《油田化学》2018年第2期214-219,共6页Oilfield Chemistry

基　　金：河南省高等学校重点科研项目"清洁聚合物压裂液研究与应用"(项目编号17A530010);新乡学院科技创新团队项目"空气净化与水污染防治"(项目编号XXUTD20170111)

摘　　要：为获得耐温性能优良的压裂液,以丙烯酰胺(AM)、丙烯酸(AA)为骨架单体,2-丙烯酰胺基-2-甲基丙磺酸(AMPS)和β-环糊精(β-CD)为功能单体制得四元共聚物压裂液稠化剂(MASD),通过红外光谱仪和核磁共振波谱仪表征了MASD的结构,评价了MASD的性能,研究了MASD和有机锆交联剂组成的压裂液的耐温抗剪切性和对岩心的伤害性。结果表明,在单体总加量23%、AM∶AA∶AMPS∶β-CD质量比7∶1∶1∶1、引发剂加量0.3%(以单体质量计)、溶液p H值为7、引发温度在40℃的条件下反应0.5 h后再在60℃下反应8 h制得的MASD在250℃下的化学结构稳定,具有良好的流变性和增黏能力,0.6%的MASD溶液室温下的黏度为72 m Pa·s,携砂性能较好,陶粒的沉降速率为1.78×10^(-4)m/min。0.6%MASD与0.5%有机锆交联剂组成的压裂液具有良好的耐温抗剪切能力,在120℃和140℃、170 s^(-1)下剪切90 min后的黏度约为170 m Pa·s;对岩心的伤害率低(14.27%),可用于中高温压裂施工。In order to obtain fracturing fluid with excellent temperature resistance, tetra-polymer thickener MASD for fracturing fluid was prepared using acrylamide （AM） and acrylic acid （AA） as backbone monomers and 2-acrylamide-2-methyl propane sulfonic acid （AMPS） and β-cyclodextrins （fl-CD） as functional monomers. The structure of MASD was characterized with FTIR spectrum and ^1H-NMR spectrum, and the major performance of MASD was evaluated. Furthermore, the temperature and shearing resistance, core damage property of the fracturing fluid, which was composed of MASD and organic zirconium crosslinking agent, were studied. The results showed that MASD had stable chemical structure at 250℃ , good rheological property and strong thickening ability, which synthesized on the condition of 23% total concentration of monomers, 7： 1 ： 1 ： 1 mass ratio of AM： AA： AMPS ：β-CD, 0.3% initiator dosage in terms of monomers mass, 7 pH value, initiating at 40℃ for 0.5 h and then continuing at 60℃ for 8 hrs. The viscosity of 0.6% MASD solution was 72 mPa. s at room temperature. The rate of sand sedimentation was 1.78× 10^-4m/ min, indicating good sand carrying capacity of MASD solution. The fracturing fluid containing 0.6% MASD and 0.5% organic zirconium crosslinking agent had good temperature and sheafing resistance. The final viscosity of fracturing fluid system was about 170 mPa. s after continuously sheafing for 90 rain at 120℃ or 140℃ and 170 s^-1. The core damage rate of fracturing fluid was low to 14.27%. The thickener MASD could be used for medium-high temperature fracturing construction.

关 键 词：压裂液 稠化剂 四元共聚物 制备 性能评价 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]