耐高温海水基压裂液稠化剂性能评价
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十三五国家科技重大专项“深层高温压裂液及配套技术”(项目编号2016ZX05027003)


Performance Evaluation of Thickener for Seawater-based Fracturing Fluid with High Temperature
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    摘要:

    为满足耐温180℃海水基压裂液的需求,以丙烯酰胺、丙烯酸、2-丙烯酰胺基-2-甲基丙磺酸钠、N-乙烯基吡咯烷酮、顺丁烯二酸单十二烷基酯钠盐、N-十六烷基丙烯酰胺为原料,以亚硫酸氢钠-过硫酸铵为引发剂,制得缔合型聚合物稠化剂SWF-T180,评价了SWF-T180的增黏、抗盐、溶胀、耐温性能及其配制海水基压裂液的性能。研究结果表明,稠化剂SWF-T180增黏效果显著,加量超过0.6%时溶液黏度快速增加;SWF-T180具有良好的抗盐抗钙镁能力和速溶性能,在海水中溶胀 8 min 后的溶液黏度达到最终黏度的 84.3%,耐温达 180℃;由 1%SWF-T180和0.6%交联剂配制的海水基压裂液在180℃下剪切90 min的黏度为60~70 mPa·s,具有良好的剪切恢复性能,满足海上180℃储层压裂施工的要求。

    Abstract:

    In order to meet the demands for seawater-based fracturing fluid under the temperature of 180℃,a thickener SWF-T180 of associated polymer was synthesized with acrylamide, acrylic acid, 2-acrylamido-2-methyl-propanesulfon-icacid, N-vinylpyrrolidone, dodecanol maleic anhydride sodium and N-hexadecylacrylamide as raw material, and ammonium persulfate-sodium sulfite as initiator. The increasing viscosity,salt-tolerance,swelling,temperature-resistance of SWF-T180 and the performance of seawater-based fracturing fluid prepared by SWF-T180 were evaluated. The results showed that SWF-T180 had an obvious viscosity enhancement effect. When the dosage of SWF-T180 was greater than 0.6%,the viscosity of the fluid increased rapidly. SWF-T180 had good resistance to salt,calcium and magnesium with large dissolving capacity. The viscosity of SWF-T180 after dissolving in seawater for 8 minutes reached 84.3% of its ultimate viscosity. The temperature resistance of SWF-T180 was up to 180℃. The viscosity of seawater-based fracturing fluid composed of 1% SWF-T180 and 0.6% crosslinking agent was 60—70 mPa·s under the condition of 180℃ and 90 minutes shearing time. SWF-T180 had a good shear recovery feature,which met the requirement of offshore reservoir fracturing operation at 180℃.

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陈 磊,鲍文辉,郭布民,王杏尊,李 梦,孙厚台.耐高温海水基压裂液稠化剂性能评价[J].油田化学,2020,37(1):17-21.
CHEN Lei, BAO Wenhui, GUO Bumin, WANG Xinzun, LI Meng, SUN Houtai. Performance Evaluation of Thickener for Seawater-based Fracturing Fluid with High Temperature[J]. OILFIELD CHEMISTRY,2020,37(1):17-21.

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  • 在线发布日期: 2020-04-27
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