Research on Integrated Technology of Injection-Production Separation for Thermal Production Wells in Bohai Oilfield

doi:10.3969/J. ISSN.1006-768X.2020.01.15

Drilling & Production Technology ›› 2020, Vol. 43 ›› Issue (1): 49-52.DOI: 10.3969/J. ISSN.1006-768X.2020.01.15

• PRODUCTION TECHNOLOGY • Previous Articles Next Articles

Research on Integrated Technology of Injection-Production Separation for Thermal Production Wells in Bohai Oilfield

SI Nianting¹ , WANG Xudong², FENG Shuo¹ , LI Hui², GUO Wenlin¹ and WANG Man²

1 . CNOOC ( China) Co. ,Ltd. Tianjin Branch, Tianjin, 300450, China; 2. CNOOC EnerTech-Drilling & Production Co, Tianjin 30045, China

Online:2020-01-25 Published:2020-01-25
Supported by:

渤海油田热采井注采分离一体化技术研究

司念亭¹, 王旭东², 冯硕¹, 李辉², 郭雯霖¹, 王曼²

1 中海石油(中国) 有限公司天津分公司 2 中海油能源发展股份有限公司工程技术分公司

作者简介:司念亭( 1974 - ) , 高级工程师, 1998 年毕业于西南石油大学, 现任渤海石油管理局工程技术作业中心副总经理, 主要从事海洋石油井下技术、井筒工艺的研究及管理工作。地址: ( 300450) 天津市滨海新区海川路 2121 号 C 座, 电话:022 - 66502176, E - mail: sint@ cnooc.com. cn
基金资助:
企业生产开发专项“ 同井同层注热采油分离技术可行性研究”(编号: CNOOC-TJ SCXM2012017)。

Abstract

Abstract: The integrated technology of injection-production separation of thermal recovery wells is studied and the key supporting tools are developed in order to solve the problems caused by no effective separation measures for injection section and production section during thermal recovery wells in Bohai Oilfield, including the unbalanced utilization level of reservoirs, sand jam and sand burial during multi cycles of huff and puff, etc. The technology optimizes the injection-production parameters and the length of horizontal injection-production section by numerical simulation software, and achieves rational configuration of injection-production resources and fine injection-production by reasonably arranging the high temperature insertion seals, high temperature injection valves and production valves. This technology not only realizes uniform steam injection in horizontal section and improves the utilization level of horizontal section, but also effectively reduces the risk of sand production in wellbore by secondary sand filtration, prolongs the life of thermal recovery wells and increases the economic benefits of thermal recovery. At present, this technology has been successfully applied in thermal recovery wells of heavy oil in Bohai Oilfield. The cumulative oil production in this cycle is 6515 tons, which is 1520 tons more than that in the previous cycle, and good results have been achieved. The integrated technology of injection-production separation provides a new technical means for fine and efficient production and sand control of thermal recovery wells in Bohai Oilfield.

Key words: , Bohai Oilfield, thermal well, multi cycle of huff and puff, injection-production separation, integration

摘要： 针对目前渤海油田热采井注入段和采出段未采取有效的分隔措施，造成储层动用程度不均衡，多轮次吞吐过程中易出现砂卡、砂埋等问题，开展了热采井注采分离一体化技术研究，并研制了关键配套工具。该技术通过数值模拟软件优化注采参数及水平段注采段长度，合理布置高温插入密封器、高温注入阀及采出阀，达到合理配置注采资源，实现精细化注采。该工艺技术不仅能实现水平段分段均匀注汽、提高水平段动用程度，而且能有效降低井筒出砂的风险，二次滤砂延长热采井寿命，提高热采经济效益。目前该技术已成功在渤海油田稠油热采井中应用，周期产油6 515 t，与上周期相比增油1 520 t，取得了良好的效果。注采分离一体化技术为渤海油田热采井精细、高效开采，防砂、治砂提供了新的技术手段。

关键词: , 渤海油田, 热采井, 多轮次吞吐, 注采分离, 一体化

CLC Number:

SI Nianting, WANG Xudong, FENG Shuo, LI Hui, GUO Wenlin, WANG Man. Research on Integrated Technology of Injection-Production Separation for Thermal Production Wells in Bohai Oilfield[J]. Drilling & Production Technology, 2020, 43(1): 49-52.

司念亭, 王旭东, 冯硕, 李辉, 郭雯霖, 王曼. 渤海油田热采井注采分离一体化技术研究[J]. 钻采工艺, 2020, 43(1): 49-52.

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Research on Integrated Technology of Injection-Production Separation for Thermal Production Wells in Bohai Oilfield

渤海油田热采井注采分离一体化技术研究

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