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微生物驱油技术在盘2 - 33 断块常规稠油油藏的应用

断块油气田

2004年 11卷第04期

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Title

Application of Microorganism Flooding Technology inPan2-33 Fault Block of Routine Heavy Oil Reservoir

作者

孙德宽　王勤田　王海峰等

Authors

Sun Dekuan, Wang Qintian, Wang Haifeng,et al

单位

胜利油田有限公司临盘采油厂

摘要

盘2 - 33 断块为常规稠油油藏,已进入高含水开发期,水驱稳产难度大,根据微生物生长、代谢的地层条件,该块适合微生物驱油。针对油藏地质特点,进行了微生物驱油室内试验研究,包括菌种筛选、菌种适应性、物理模拟菌液驱油及空气辅助试验。结果表明,细菌在地层中有较强的生长及繁殖能力,经优选的微生物作用后,原油被乳化,原油粘度降低,采收率大幅度提高。于是进行了现场施工设计,包括注入周期、注入量等,实施后效果明显,产油量上升,含水率下降,采收率提高6. 8 %。

Abstract

Pan2-33 fault block reservoir is a routine heavy oil

reservoir. It has been at the stage of high water cut already and it

is difficult to maintain steady oil production during water-flooding

stage. Microorganism flooding is available for this block because

stratum conditions in this block are suitable for the metabolism of

microorganism. As for the geological characteristic of oil

reservoir , the indoor experimental study of microorganism was

carried , including the screening of the bacterial , adaptability of

the bacterial , physical analogy fungus liquid flooding and

auxiliary experiments of air. The result indicates that the

bacterium in the stratums would be in a state of strong growth and

reproduction. Oil is emulsified , oil viscidity is reduced and oil

recovery is improved a lot. We have carried on the on-the-spot

detail design , including injecting cycle , injecting volume , etc.

The result is obvious after implements , daily oil production was

improved and water cut was reduced , oil recovery was raised by

6. 8 percentage points.

关键词：

常规稠油　微生物驱油　降粘　提高采收率;

Keywords:

Routine heavy oil , Microorganism flooding ,Viscosity reduction , Enhanced oil recovery

;

基金项目

DOI