断块油田特低渗层系综合开发工艺探讨

The disccussion of Synthetic Development Technology in Special Low Permeability Pools Oilfields

李长林 申涛 耿淑亚 武德宁

LI Chang-lin SHEN Tao GENG Shu-ya WU De-ning

中原油田分公司 采油二厂, 河南 范县 457532

Zhongyuan Petroteum Exploration Bureau, Fanxian Henan 457532

针对濮城油田特低渗的具体情况,通过双靶定向井,油层保护,注采井网部署等八个方面,介绍了沙三中6-10层系的成功开采方法及取得之效果。这些综合工艺的实施对同类油藏的开发具有一定的借鉴意义。

The zones 6-10 of Es3 in Pucheng Oilfield is characterized by abnormal low permeability of 1.9×10-3 μm2, stable distribution, good connection coming to more than 80% under the control of 300-400m well spacing. Technologies such as reasonable layout of pattern type, dual targeted orientational drilling, high pressure injection increase, early waterflood for complement energy, high efficient perforation and bullhead fracturing etc, are applied to improve pay zone and to prevent production well from being flooded in design of development. Downhole pumping with small power is used to enlarge drawdown and increase off-take potential of production wells. The experience in zones 6-10 of Es3 in Pucheng oilfield can be used for reference in developing other oilfields with characters alike.