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渤海P油田油井高压注水解堵效果评价及影响因素研究 |
Study on High Pressure Pulse Evaluation and Influencing Factors of Production Wells in P Oilfield |
投稿时间:2019-07-05 修订日期:2019-07-05 |
DOI: |
中文关键词: 高压注水、油井解堵,效果评价,影响因素 |
英文关键词: high pressure water injection, oil well unblocking, effect evaluation, influencing factors |
基金项目:国家科技重大专项“大型油气田及煤层气开发”(2016ZX05058-003);中国海洋石油总公司科研项目“海上高效采油新技术”(CNOOC-KJ 135 ZDXM 23 LTD)。 |
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中文摘要: |
渤海P油田油井主要为压裂砾石充填完井,近些年来部分压裂充填井的生产表现未能遵循无因次采油采液指数曲线的特征,而是类似裸眼井出现产液量递减的现象。本文通过文献调研、动静态数据分析整理并结合解堵力学计算,分析出P油田的堵塞机理,创新性提出高压注水解堵措施并对该措施从措施效果评价,影响效果因素分析入手,找出主力层厚度占比、主力层压力及亏空情况、含水、污染程度以及注水压差等是决定措施效果好坏的决定性因素,总结改善措施效果的方法并提出措施的选井原则,为下一步高压注水解堵选井和实施提供指导。 |
英文摘要: |
The Bohai P oilfield oil well is mainly filled with FP, In recent years,these wells has failed to follow the characteristics of the dimensionless oil recovery index curve, but the phenomenon of diminishing production of liquid in similar openholes. This paper analyzes the plugging mechanism of P oilfield through literature research, dynamic and static data analysis and combined with the mechanical calculation of plugging. Innovatively put forward the high-pressure injection hydrolysis blocking measures and the measures from the evaluation of the effect of the measures, the analysis of the effect factors, to find out the thickness of the main layer, the pressure of the main layer and the deficit, water, pollution and water pressure difference are the decision measures Decisive factor of good or bad effect, Summarize the method of improving the effect of the measures and propose the well-chouring principle of the measures, and provide guidance for the next step of high-pressure injection hydrolyzing plugging and implementation. |
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