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史深100 低渗透油田钻完井工程油层保护技术

断块油气田

2004年 11卷第06期

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Title

Oil-bearing Formation Protecting Series during Drilling and Completing in Low Permeable Oilf ield of Shishen 100

作者

封永利

Authors

Feng Yongli

单位

胜利油田有限公司现河采油厂

摘要

史深100 低渗透油田主力含油层系为沙三中,由于其特殊的地层性质,在钻井过程中更容易受到污染而降低采收率。实验结果表明,铵盐钻井液对粘土的抑制作用有利于保护史深100 水敏性油层;在入井液中添加防膨剂、缓蚀剂、破乳剂、助排剂,可得到性能良好的新井入井液;单向屏蔽暂堵剂和降滤失剂的使用,油管传输负压射孔均可减少对地层的伤害。因此,在钻完井过程中采取各种有效的油层保护技术,降低污染危害,是关系到此类低渗透油田开发效益的关键。

Abstract

The Middle Es₃ , the main oil2bearing series of Shishen

100 ,is easy to be polluted during drilling due to its special

formation properties , which also cause low recovery

efficiency.The experiments show that the inhibitation of

ammonium salt drilling mud can protect water-sensitive

formations better in Shishen 100 ; inflows with good

performance can be made by adding clay stabilizer ,corrosion

inhibitor , demulsifying agent and cleanup additive ; besides ,

the use of one-way temporary blocking agent and fluid loss

additive also lessen damages on formations as well as negative

pressure perforating through tubing1So , using all effective

techniques during drilling and completing to reduce formation

pollutions is the key affecting the benefit of developing low

permeable oilfields.

关键词：

低渗透油田　敏感性　油层保护　油田开发　污染;

Keywords:

Low permeable oilfield , Sensitivity , Formation protection , Oilfield development , Formation pollution.

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基金项目

DOI