姬塬油田耿43井区聚合物微球调驱工艺优化

发布时间：2019-01-03 13:06

【摘要】：姬塬油田耿43区长4+5储层非均质性强,开发过程中注采矛盾较突出,主要表现为:“单井产能低,油井见水早且呈多向性,含水上升快,裂缝见水明显”的特征。聚合物微球调驱技术是近年来发展起来的一种有效调整层内层间矛盾、改善注水油田开发效果的工艺技术,姬塬油田耿43区前期开展过现场微球调驱实验,也取得了一定的效果,但在工艺参数优化方面做的很少,因此本论文围绕室内微球调驱工艺优化实验,通过不同含水时期的微球粒径匹配实验,微球注入浓度、注入量以及段塞组合的优化实验,得出:低含水时期,选用微球粒径为5微米,微球溶液的注入浓度为7000mg/L,注入量为0.3PV,段塞组合选用微球+表活剂;中含水时期,选用微球粒径为5微米,微球溶液的注入浓度为5000mg/L,注入量为0.5PV,段塞组合选用微球+微球+表活剂;高含水时期,选用微球粒径为10微米,微球溶液的注入浓度为5000mg/L,注入量为0.5PV,段塞组合选用微球+微球+表活剂。室内模拟现场单注和配水间合注结果显示单注明显优于合注,且合注5微米微球的提采效果优于合注10微米微球,但封堵效果较差。通过分析姬塬耿43区长4+5现场六个井组调驱资料,可知三个井组见效性较好,另外三个井组见效性较差,通过室内实验结论和其现场动静态资料反馈,建议三口见效性较差的井组应使用较小粒径的微球进行调驱。
[Abstract]:The reservoir heterogeneity of Chang45 reservoir in Geng43 area of Jiyuan Oilfield is strong, and the contradiction between injection and production is obvious during the development process. The main features are as follows: low productivity of single well, early and multidirectional water breakthrough, rapid rise of water cut and obvious water discovery in fractures. Polymer microsphere flooding technology is a kind of technology developed in recent years to effectively adjust the inner layer contradiction and improve the development effect of water injection oilfields. Field microsphere flooding experiments were carried out in Geng 43 area of Jiyuan Oilfield in the early stage. Some results have been achieved, but very little has been done on the optimization of process parameters. Therefore, in this paper, the concentration of microspheres is obtained by the particle size matching experiment of different water cut periods, and the optimization experiment of microsphere flooding is carried out in this paper. The optimized experiment of injection volume and slug combination shows that: in low water cut period, the microsphere size is 5 渭 m, the injection concentration of microsphere solution is 7 000 mg / L, the injection amount is 0.3 PV. the slug combination is composed of microsphere surface active agent; In the middle water cut period, the size of the microspheres was 5 渭 m, the injection concentration of the microsphere solution was 5 000 mg / L, the injection amount was 0.5 PV.The slug combination was composed of the microsphere surface active agent. In the period of high water cut, the size of microspheres is 10 渭 m, the injection concentration of microsphere solution is 5 000 mg / L, the injection amount is 0.5 PV.The slug combination is composed of microsphere surface active agent. The results of laboratory simulation show that the single injection is better than the combined injection, and the extraction effect of the combined injection 5 micron microsphere is better than that of the combined injection 10 micron microsphere, but the plugging effect is poor. By analyzing the data of six well groups in Chang45 of Jiyuan Geng 43 area, we know that three well groups have better effect, the other three well groups have poor effect, and feedback through laboratory experiment conclusion and its field dynamic and static data, It is suggested that the smaller particle size microspheres should be used in the three well groups with poor effectiveness.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE357.46

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