摘要
为改善特高含水期的油藏产能 ,应用储层精细描述等技术研究了濮城油田南区S2上 2 +3油藏的剩余油分布状况 ,并提出该油藏的 9个小层为今后开发的潜力层 ;推广注水井化学调剖新工艺 ,启动低产层 170m/ 81层 ,调剖对应井平均增油 2 .0 4t/d ;及时采取相应配套措施 ,如大修、补孔、下大泵等 ,累计增油 2 .7× 10 4 t;进一步完善注采井网、实施动态调配技术 ,较好地解决了平面、层间的注采关系。通过实施上述措施 ,濮城油田南区S2上 2 +3油藏的产量综合递减和自然递减分别从 16 .99%和 2 4.78%降至 0 .88%和 10 .5 3% ,可采储量增加 2 5 .2 9× 10 4 t,提高采收率1.5 9% ,创效益近 10 0 0× 10 4 元。因此 ,在油藏特高含水期进行剩余油分布和储层精细描述研究、适时地改进调剖剂、堵水剂和调剖工艺具有重要意义。
In order to improve reservoir productivity in extra high water cut period, the residual oil distribution of 2+3 reservoirs in upper Es 2 in southern area of Pucheng oil field was studied by using detailed description of reservoirs. 9 substrata of the reservoir are put forward to be future development object. Extending new chemical profile control technology of water injector started up 81 layers (170m), and increased oil production of corresponding well by 2.04t/d average low-productivity. Taking appropriate measures (such as workover, reperforating and using big pump) increased cumulative oil production by 2.7×10 4t. The relation between injection and production of plane and interlayer has been in balance after the flooding pattern was perfected further and dynamic allocation was carried out. After the measures above, general decline and natural decline in production of 2+3 reservoirs in southern area of Pucheng oil field decreased from 16.99% and 24.78% to 0.88% and 10.53%, the recoverable reserves increased to 25.29×10 4t, the oil recovery improved 1.59% and the benefit is nearly 1000×10 4 yuan. So it's much important to make researches on residual oil distribution and detailed description of reservoirs and timely improve profile control agent and profile control technology in super high water cut period of reservoirs.
关键词
断块油气田
特高含水期
剩余油分布
调剖
产能
fault block oil and gas field, extra high water cut period, residual oil distribution, chemical profile control, synthetic measures, Pucheng oil field
