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渤海油田分层注水工艺技术现状与发展趋势

2016-01-17程心平,王良杰,薛德栋

海洋石油 2015年2期

渤海油田分层注水工艺技术现状与发展趋势

程心平,王良杰,薛德栋

(中海油能源发展股份有限公司工程技术分公司,天津 300457)

摘 要:渤海油田注水井具有防砂完井条件下分段层数多(2~6层)、井斜较大(30~60°)、单层配注量大(300~700 m3/d)等特点。总结了自20世纪90年代以来我国渤海油田注水技术的发展历程,介绍了“一投三分”注水、多管分层注水、空心集成分层注水工艺等在渤海油田的技术现状,并分述其特点及存在问题。根据渤海油田注水开发的需求,对今后开展超大斜度井和水平井分注、井下增压注水和细分注水等方面研究进行了展望。

关键词:渤海油田;注水井;分层注水;分层测试;分层调配

中图分类号:TE357.6

文献标识码:A

DOI:10.3969/j.issn.1008-2336.2015.02.061

文章编号:1008-2336(2015)02-0061-05

基金项目:国家“十二五”重大专项“大斜度定向井可洗井分层注水工艺技术”(2011ZX05024-002-011)。

收稿日期:2014-03-22;

作者简介:第一程心平,男,1968年生,高级工程师,1990年毕业于西安石油学院矿机专业,长期从事采油工艺和井下工具开发研究。E-mail:chengxp@cnooc.com.cn。

改回日期:2015-01-09

Current Situation and Development Tendency of Separated Water Injection Technology in Bohai Offshore Oilfield

CHENG Xinping, WANG Liangjie, XUE Dedong

(CNOOC EnerTech-Drilling & Production Co., Tianjin 300457, China)

Abstract:The injection wells with sand control completion are characterized by multi-layer separation(two to six layers), high borehole deviation(30 to 60°)and high injection distribution volume for single layer(300 to 700 m3/d). In this paper, the development history of separated water injection technologies has been summarized for Bohai Offshore Oilfield since 1990s. In addition, the application of separated water injection technology, such as one trip for three layers technology, multi-pipe injection technology and hollow integrated zonal injection technology, etc. are also introduced in this paper, and the problems are discussed. Finally, according to the requirements for water flooding in Bohai oilfield, some new water injection technology are discussed, such as zonal injection technology for super high deviation or horizontal wells, downhole pressure boosting technology and subdivisional water injection technology, etc.

Keywords:Bohai oilfield; injection well; separated water injection; zonal testing; zonal distribution

油田注水具有保持开采层压力的作用,采用分层注水方式是实现渤海海域油田合理有效注水、稳产高产的主要手段。渤海油田具有构造破碎、断裂发育、油藏复杂等特点,岩性以疏松砂岩油藏为主,地层易出砂,油层薄、层数多[1]。注水井或转注井采用分层注水工艺。

海上注水井与陆地注水井井况存在差异,同时有限的平台生产作业空间使得陆地成熟的分层注水技术不能直接用于海上注水井。因此,海上油田分层注水技术开发与应用均根据其自身油藏地质及井况特点,在前期防砂完井或套管完井的井筒基础上开展工作。……

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