大庆油田注聚井解堵增注措施研究
发布时间：2019-05-29 03:35
【摘要】：大庆油田先后进行了聚合物驱油技术的试验和应用,随着聚合物注入井的连续注入,达到预期的驱油效果,提高了油井的产量,但是注聚井由于注入物性质的变化以及油层的情况而出现了堵塞的现象,导致注入压力上升、地层的吸液指数下降,影响到聚驱的效果。注聚井堵塞问题突显出来,必须加以解决,才能保证聚合物驱油的效果。为了解除注聚井的堵塞情况,必须研究有效的解堵剂。本文针对大庆油田聚合物注入井的生产情况,分析堵塞物的成分,对堵塞的成因进行研究,提出必要的技术措施,有效地解决堵塞的问题。通过各种室内的化学试验,研究高效的解堵剂体系,并经过现场的确认,达到最佳的解堵效果。而且在解堵体系实施后,应用油层保护剂,解决油层的污染问题,能够延长注聚井的服役年限。对于大庆油田注聚井的堵塞情况的分析,现场采油厂的生产实践检验,取得了较好的解堵效果。
[Abstract]:Daqing Oilfield has carried out the test and application of polymer flooding technology one after another. With the continuous injection of polymer injection wells, the expected oil displacement effect has been achieved and the production of oil wells has been increased. However, due to the change of injection properties and the situation of reservoir, the polymer injection well has the phenomenon of blockage, which leads to the increase of injection pressure and the decrease of liquid absorption index of formation, which affects the effect of polymer flooding. The problem of polymer injection well blockage is highlighted and must be solved in order to ensure the effect of polymer flooding. In order to remove the blockage of polymer injection wells, effective plugging removers must be studied. In this paper, according to the production situation of polymer injection well in Daqing Oilfield, the composition of blockage is analyzed, the cause of blockage is studied, and the necessary technical measures are put forward to effectively solve the problem of blockage. Through various laboratory chemical experiments, the efficient plugging removal agent system was studied, and the best plugging removal effect was achieved by field confirmation. Moreover, after the implementation of the plug removal system, the application of reservoir protectants to solve the problem of reservoir pollution can prolong the service life of polymer injection wells. For the analysis of the blockage of polymer injection wells in Daqing Oilfield, the production practice of field oil production plants has been tested, and good plugging removal effect has been obtained.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE358;TE357.46
，
本文编号：2487606
[Abstract]:Daqing Oilfield has carried out the test and application of polymer flooding technology one after another. With the continuous injection of polymer injection wells, the expected oil displacement effect has been achieved and the production of oil wells has been increased. However, due to the change of injection properties and the situation of reservoir, the polymer injection well has the phenomenon of blockage, which leads to the increase of injection pressure and the decrease of liquid absorption index of formation, which affects the effect of polymer flooding. The problem of polymer injection well blockage is highlighted and must be solved in order to ensure the effect of polymer flooding. In order to remove the blockage of polymer injection wells, effective plugging removers must be studied. In this paper, according to the production situation of polymer injection well in Daqing Oilfield, the composition of blockage is analyzed, the cause of blockage is studied, and the necessary technical measures are put forward to effectively solve the problem of blockage. Through various laboratory chemical experiments, the efficient plugging removal agent system was studied, and the best plugging removal effect was achieved by field confirmation. Moreover, after the implementation of the plug removal system, the application of reservoir protectants to solve the problem of reservoir pollution can prolong the service life of polymer injection wells. For the analysis of the blockage of polymer injection wells in Daqing Oilfield, the production practice of field oil production plants has been tested, and good plugging removal effect has been obtained.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE358;TE357.46
，
本文编号：2487606
本文链接：https://www.wllwen.com/kejilunwen/shiyounenyuanlunwen/2487606.html
