裂缝型油藏水窜特征与封堵体系研制
Water channeling characteristics of fractured reservoir and development of plugging system
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- 引用格式:
-
魏开鹏,邓学峰,方群,斯容.裂缝型油藏水窜特征与封堵体系研制[J].天然气与石油,2022,40(6):75-80.doi:10.3969/j.issn.1006-5539.2022.05.011
WEI Kaipeng, DENG Xuefeng, FANG Qun, SI Rong.Water channeling characteristics of fractured reservoir and development of plugging system[J].Natural Gas and Oil,2022,40(6):75-80.doi:10.3969/j.issn.1006-5539.2022.05.011
- DOI:
- 10.3969/j.issn.1006-5539.2022.05.011
- 作者:
- 魏开鹏 邓学峰 方群 斯容
WEI Kaipeng, DENG Xuefeng, FANG Qun, SI Rong
- 作者单位:
- 中国石油化工股份有限公司华北油气分公司石油工程技术研究院, 河南 郑州 450006
SINOPEC Research Institute of Petroleum Engineering in Northern China, Zhengzhou, Henan, 450006, China
- 关键词:
- 裂缝型;水窜;封堵体系;性能
Fractured; Water channeling; Plugging system; Performance
- 摘要:
针对红河油田长8油藏储层致密、裂缝发育导致水窜严重的问题,通过分析裂缝特征和水窜特征,研制了适合裂缝型油藏的高强度封堵体系,成胶时间5~20 h可调,耐盐10×104 mg/L,突破压力梯度可达5 MPa/m,大于基质启动压力梯度0.082~0.125 MPa/m。现场试验封堵有效率100%,调剖后注水压力提高10.2 MPa,阶段增油260.9 t,有效解决了裂缝型油藏注水开发的水窜问题,对裂缝型油藏的开发具有重要意义。
Aiming at the issue of serious water channeling caused by tight reservoir and developed fractures in Chang-8 reservoir of Honghe Oilfield, a high-strength plugging system suitable for fractured reservoirs was developed by analyzing the characteristics of fractures and water channeling. The gelling time was adjustable for 5~20 hours, the salt tolerance was 10×104 mg/L, and the breakthrough pressure gradient was 5 MPa/m, which was 0.082~0.125 MPa/m higher than the starting pressure gradient of matrix. The field plugging efficiency is 100%, the water injection pressure is increased by 10.2 MPa after profile control, and the oil production is increased by 260.9 t in stages, which effectively solves the issue of water channeling during water injection development in fractured reservoirs.
