志丹油田3175井区分区块分层系综合治理

Divisional and layered comprehensive treatment of Zhidan Oilfield 3175 Wellblock

志丹油田3175井区区块静态上注采不对应问题突出,导致动态上注水有效驱替没有建立,储层动用程度低,油井低产低效,注水开发效果没有得到有效提升,注水开发矛盾突出。急需针对该区目前开发矛盾,提出一套切实可行、科学合理的注水调整方案。本文综合储量动用、注采对应和注水见效情况多种因素,从完善注采井网、提高小层储层动用程度、完善注采对应关系和优化配注量4个方面,对研究区采用分区块分层位综合治理,改善区块开发效果,实现区块高效开发,同时为国内同类油藏的注水开发综合治理提供参考。

In the 3175 well block of Zhidan Oilfield,the problem of non-correspondence between static injection and production in the block is prominent,resulting in the failure to establish effective dynamic water injection displacement,low production level of reservoirs,low production and low efficiency of oil wells,ineffective improvement of water injection development effects,and contradictions in water injection development. It is urgent to put forward a set of feasible,scientific and reasonable water injection adjustment schemes according to the current development contradiction in this area. In this paper,many factors,such as reserve production,injection production correspondence and water injection efficiency,are considered,and in order to improve the development effect of the block and realize the high-efficiency development of the block,the comprehensive treatment of the block and layer position is adopted in the study area from four aspects:improving the injection production well pattern,increasing the production of small reservoir by zone production wells,improving the corresponding relationship between injection and production by injection wells and optimizing the injection allocation. The research provides a reference for the comprehensive treatment of similar reservoirs in China.