蒙古林油田弱凝胶深部调驱体系室内评价

本文从聚合物分子在剪切与未剪切的条件下对蒙古林油田弱凝胶深部调驱体系进行评价。实验表明聚合物分子被剪切后，主要影响凝胶体系的成胶强度，未被剪切时的凝胶强度明显高于聚合物分子被剪切后的凝胶强度，而从长期稳定性的角度来讲，聚合物分子是否被剪切，对稳定性的影响不是很大。剪切条件下聚合物溶液浓度为800mg/L和1000mg/L的已成胶的凝胶体系最高强度分别为4619mPa.s和4319mPa.s，远远低于聚合物未被剪切时的最高成胶强度34293mPa.s和31393mPa.s； 剪切后的聚合物在其成胶后的稳定性较好，恒温192h后，聚合物溶液浓度为800mg/L和1000mg/L的凝胶体系粘度最终保留值分别为2224mPa.s和2999mPa.s，粘度下降率分别为51.85%和30.56%。蒙古林油田所用凝胶体系配方为聚合物浓度为800mg/L和1000mg/L，聚/交比为30:1。

Laboratory evaluation about weak gel deep tone drive system for Menggulin Oil Field

From the polymer molecules in the cut and did not shear conditions to Menggulin Oil Field for weak gel deep profile system evaluation in this paper. Experimental results showed that the main effect of the gel system is gelling strength if the polymer molecules are cut, the gel strength of polymer molecule not under shear is significantly higher than the shear, and from a long-term stability perspective, polymer molecules are cut or not, the effect on the stability of it is not very large. Under the condition of shear, the concentration of polymer solution for 800 mg/L and 1000 mg/L, the highest gelling strength are 4619 mPa. s and 4319mPa.S, far below the highest gelling strength of 34293 mPa.s and 31393 mPa.s under the polymer solution is not shear; the stability of polymer solution after gelling under shear is good, after 192 h in constant temperature, the viscosity reserves value that the concentration of polymer solution for 800 mg/L and 1000 mg/L, is 2224 mPa.s and 2999 mPa.s respectively, the decrease rate of viscosity is 51.85% and 30.56% respectively. The formula of gel system to Menggulin Oil Field is that the concentration of polymer is 800 mg/L and 1000 mg/L, polymer and the ratio of crosslinking agent for 30:1.