CAJ | 학술논문

由于弱凝胶调驱体系抗剪切性能弱而限制了其在油藏中的应用，以共聚物丙烯酰胺/丙烯酸/N-乙烯基吡咯烷酮为主剂，加入甲醛-苯酚复合交联剂和高温稳定剂，制备了调驱性能较好的弱凝胶体系。考察了聚合物质量浓度、稳定剂质量浓度、交联剂/聚合物质量比、交联剂配制摩尔比、温度、pH值以及矿化度对成胶性能的影响。确定了弱凝胶体系的最佳使用条件：聚合物AM/AA/NVP质量浓度2000 mg/L，交联剂/聚合物质量比2/1000，交联剂（甲醛/苯酚）摩尔比4∶1，稳定剂（硫脲）质量浓度100 mg/L，pH值为7，温度60℃。室内调驱性能评价表明，该体系具有良好的抗剪切性能，黏度保留率达到91.38%，同时封堵率在99%以上，突破压力大于7 MPa，并且还具有一定的选择封堵能力，剖面改善率达到80%以上。
유우약응효조구체계항전절성능약이한제료기재유장중적응용，이공취물병희선알/병희산/N-을희기필각완동위주제，가입갑철-분분복합교련제화고온은정제，제비료조구성능교호적약응효체계。고찰료취합물질량농도、은정제질량농도、교련제/취합물질량비、교련제배제마이비、온도、pH치이급광화도대성효성능적영향。학정료약응효체계적최가사용조건：취합물AM/AA/NVP질량농도2000 mg/L，교련제/취합물질량비2/1000，교련제（갑철/분분）마이비4∶1，은정제（류뇨）질량농도100 mg/L，pH치위7，온도60℃。실내조구성능평개표명，해체계구유량호적항전절성능，점도보류솔체도91.38%，동시봉도솔재99%이상，돌파압력대우7 MPa，병차환구유일정적선택봉도능력，부면개선솔체도80%이상。
The weak shear resistance of weak gel proifle controlling and lfooding system limits its application in reservoirs, we prepared a weak gel system with favorable proifle controlling and lfooding performance with AM/AA/NVP as the main agent and added Phenol-formaldehyde as cross-linking agent and temperature stabilizer. We studied the effects of polymer concentration, stabilizer con-centration, crosslinker/polymer proportion, crosslinker concentration, temperature, pH and salinity on the gelling property. The optimum conditions for preparing the weak gel system were identiifed as follows:concentration of polymer (AM/AA/NVP):2 000 mg/L;mass ratio of crosslinker/polymer:2/1 000;proportion of crosslinker (formaldehyde/phenol):4∶1;concentration of stabilizer:100 mg/L;pH of the system:7;and suitable temperature 60℃. The in-house evaluation on proifle controlling and lfooding performance shows that the system has good shear resistance, its viscosity retention rate is up to 91.38%, and its plugging rate is above 99%, its breakthrough pres-sure is greater than 7 MPa and has certain selective plugging capability, and the sectional improvement rate is over 80%.