深水浊积油藏高含水油井堵水技术界限及策略研究
Study on technical limits and strategies for water shut-off in high water cut wells of deep-water turbidite reservoirs
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- 引用格式:
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杨依依,王旭东,齐明明,张宇,王涛,刘欢.深水浊积油藏高含水油井堵水技术界限及策略研究[J].天然气与石油,2025,43(4):100-107.doi:10.3969/j.issn.1006-5539.2025.04.014
YANG Yiyi, WANG Xudong, QI Mingming, ZHANG Yu, WANG Tao, LIU Huan.Study on technical limits and strategies for water shut-off in high water cut wells of deep-water turbidite reservoirs[J].Natural Gas and Oil,2025,43(4):100-107.doi:10.3969/j.issn.1006-5539.2025.04.014
- DOI:
- 10.3969/j.issn.1006-5539.2025.04.014
- 作者:
- 杨依依1 王旭东1 齐明明1 张宇2,3 王涛2,3 刘欢2,3
YANG Yiyi1, WANG Xudong1, QI Mingming1, ZHANG Yu2,3, WANG Tao2,3, LIU Huan2,3
- 作者单位:
- 1. 中国海洋石油国际有限公司, 北京 100028; 2. 中海油田服务股份有限公司, 天津 300459; 3. 海洋油气高效开发全国重点实验室, 北京 102209
1. CNOOC International Limited, Beijing, 100028, China; 2. China Oilfield Services Limited, Tianjin, 300459, China; 3. National Key Laboratory of Offshore Oil and Gas Exploitation, Beijing, 102209, China
- 关键词:
- 深水浊积;含水变化规律;技术界限;堵水策略
Deep-water turbidite; Water cut changing pattern; Technical limits; Water shut-off strategy
- 摘要:
- 为了实现深水浊积油藏“双高”阶段稳油控水措施经济有效实施,以英国北海X油田为例,研究油井含水率上升规律,建立凸型、直线型及凹型油井含水率的上升模型,研究不同油价下3类油井的堵水增油界限、堵水潜力界限、堵水隔夹层界限及堵水含水率界限。研究表明:明确不同油价下机械堵水增油界限为1.2×104~2.3×104桶,化学堵水增油界限为2.6×104~5.1×104桶;以堵水增油界限为基础,进一步明确不同油价下机械堵水潜力界限,即可采储量采出程度为79.2%~81.3%,化学堵水潜力界限为76.4%~78.7%;综合地质隔夹层研究成果和历年产出剖面测试(Production Logging Tool,PLT)监测资料分析,明确钙质夹层厚度界限≥0.76 m;根据盈亏平衡原理,明确油井堵水时机,建立3类油井堵水含水率界限图版。基于成果认识,形成一套适用于X油田深水浊积砂岩储层堵水策略,对深水浊积油藏“双高”阶段的堵水措施挖潜具有借鉴意义。
To realize the economically effective implementation with stabilized oil production and controlled water cut at the “double high” stage(high water cut and high recovery factor) of deep-water turbidite reservoirs, this study investigated water cut increase patterns in the British North Sea X oilfield. Three types of water cut increase models(convex, linear and concave) were developed, and limits for incremental oil after water shut-off, recovery potential limits, interlayer thickness limit, and water cut limits under different oil prices scenarios were analyzed. The research shows that: The incremental oil limits for mechanical water shut-off under different oil prices range from 12 000 to 23 000 barrels(1.2×104~2.3×104 barrels), while those for chemical water shut-off range from 26 000 to 51 000 barrels(2.6×104~5.1×104 barrels); based on these incremental oil limits, the recovery factor limits for mechanical water shut-off under different oil prices were determined to be 79.2%~81.3%, and the chemical water shut-off potential limits were 76.4%~78.7%; by integrating geological interlayer study results with historical Production Logging Tool(PLT) monitoring data, the calcareous interlayer thickness limit was established as ≥0.76 m; according to the break-even principle, optimal timing for water shut-off operations was determined, and the water cut limit charts for the three types of oil wells were developed. Based on the above results, a water shut-off strategy applicable to deep-water turbidite sandstone reservoirs in X oilfield was formulated, which is of great significance for enhancing production performance in deep-water turbidite reservoirs at the “double high” stage.
