特低渗透油藏开发综合配套技术
———濮城油田沙三中6～10 层系应用分析

Synthetic Development Technology of Special Low Permeability Pools in Zone 6～10 of Es3 in Pucheng Oilfields

赵爱武¹,孙明莉¹,解　晨¹,王相磊²

Zhao Aiwu, Sun Mingli, Xie Chen, et al

1. 中原油田分公司勘探开发科学研究院,2. 中原石油勘探局钻井二公司

Research Institute of Petroleum Exploration and Development , Zhongyuan Oilfield Company ,SINOPIC, Henan 457001 , P. R. China

濮城油田沙三中6～10 层系油藏开发设计时合理部署注采井网,应用双靶定向井钻井技术,采用高压增注技术,利用高效射孔技术和整体压裂等技术,改造油层,补充地层能量,避免了采油井暴性水淹。采用小泵深抽工艺,增大生产压差,保证油井具有较高的产能。沙三中6～10 层系特低渗透油藏的开发实践经验,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 with abnormal low permeability of 1. 9×10 - 3μm2 ,stable distribution ,good connection coming to more than 80 % under the control of 300 - 400 m 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 and etc , are applied to improve pay zone and to prevent production well form being flooded in design of development. Downhole pubping with small power is used to enlarge drawdown and increase off – take potential of production wells. The experierce in zones 6 - 10 of Es3 in Pucheng Oilfield can be used for reference in developing other oilfields with some characters.