海上Q油田低产低效井成因及治理技术研究

油田开发过程中存在低产低效井,其治理的好坏直接影响油田的经济效益。根据Q油田低产低效形成原因,将低产低效井分为地质低效、油藏低效和工艺低效三类,并针对每一类低产低效井形成原因,制定出相应的治理措施,包括地质油藏做精做细,逐层挖潜,剩余油精细研究;完善注采井网,优化注水系统;优化工作制度等措施。现场应用结果表明,Q油田2017年完成低产低效井治理43口,日产量增加1 032.9 m3,为油田的可持续发展提供了一定保障。

Cause of formation and treatment technology of low production and low efficiency wells in offshore Q oilfield

There are low production and low efficiency wells in the process of oilfield development, and the quality of their treatment directly affects the economic benefits of the oilfield. According to the causes of low production and low efficiency in Q oilfield, the low production and low efficiency wells are divided into three categories: geological low efficiency, reservoir low efficiency and process low efficiency. According to the causes of formation of each type of low production and low efficiency wells, corresponding control measures are formulated, including fine geological reservoir, layer by layer tapping potential, fine residual oil research, perfection of injection and production well pattern, optimization of water injection, balance between injection and production, optimization of the working system and other measures. Field application results show that 43 low production and low efficiency wells have been treated in Q oilfield in 2017, and daily production has increased by 1 032.9 m3, which provides a certain guarantee for the sustainable development of the oilfield.