海上油田开发后期调整对初期钻修井机具选择的影响分析

Analysis on the influence of later adjustment of offshore oilfield development on the initial selection of drilling and workover rig

海上油田开发初期钻井方式、中后期修井和钻调整井方式直接影响海上平台的数量和形式,同时开发后期调整井作业又制约着前期总体开发方案机具选择。以渤海A油田开发实例,计算分析了油田开发后期钻调整井的时间和工作量对前期研究时钻修井机具选择的影响。研究结果表明,后期调整井作业影响油田新建时钻修井机具的选择,该认识可为海上油田开发初期钻修井机具选择提供参考。

Initial drilling, middle-later workover and adjustment well drilling methods directly affect the number and general layout of offshore oilfield devel opment platform, meanwhile the later adjustment restricts previous rig selection in overall development plan. Taking the development of Bohai A oilfield as example, we calculated and analyzed the influence of later adjustment well drilling time and workload on the selection of drilling and workover rig in the early study. The results show that later adjustment affects the initial selection of drilling and workover rig in early oilfield development, which could provide ref- erence to initial selection of drilling and workover rig for offshore oilfield development.