粉细砂岩油藏防砂井堵塞规律研究及充填参优化

doi:10.11885/j.issn.1674-5086.2020.08.04.01

西南石油大学学报(自然科学版) ›› 2023, Vol. 45 ›› Issue (1): 136-144.DOI: 10.11885/j.issn.1674-5086.2020.08.04.01

粉细砂岩油藏防砂井堵塞规律研究及充填参优化

贾培锋^1,2, 崔传智¹, 赵益忠², 吴忠维³, 张雨晨²

1. 中国石油大学(华东)石油工程学院, 山东青岛 266580;
2. 中国石化胜利油田石油工程技术研究院, 山东东营 257015;
3. 长江大学石油工程学院, 湖北武汉 43000

收稿日期:2020-08-04 发布日期:2023-02-24
通讯作者: 崔传智,E-mail:ccz2008@126.com
作者简介:贾培锋,1989年生,男,汉族,山东东营人,工程师,博士研究生,主要从事油气渗流理论、采油工艺技术研究。E-mail:jiapeifeng.slyt@sinopec.com
崔传智,1970年生,男,汉族,山东青州人,教授,博士,主要从事特高含水期油藏提高采收率理论、致密油渗流理论与开发技术、CO₂驱油与埋存技术等方面的研究工作。E-mail:ccz2008@126.com
赵益忠,1980年生,男,汉族,山东青州人,高级工程师,博士,主要从事油田防砂、地应力理论等方面的研究工作。E-mail:zhaoyizhong.slyt@sinopec.com
吴忠维,1990年生,男,汉族,湖北荆州人,副教授,博士,主要从事非常规储层改造技术和高含水期油藏高效开发技术研究工作。E-mail:wuzw2020@126.com
张雨晨,1993年生,女,汉族,山东东营人,工程师,硕士,主要从事油田防砂技术和采油工艺技术方面的研究工作。E-mail:zhangyuchen.slyt@sinopec.com
基金资助:
国家自然科学基金面上项目（51974343）；中国博士后科学基金（2021M703588）；中国石化股份公司科技攻关项目（P21021，P21044）

Sand Blocking Mechanisms and Sand Control Parameters Optimization Design in Fine Siltstone Reservoirs

JIA Peifeng^1,2, CUI Chuanzhi¹, ZHAO Yizhong², WU Zhongwei³, ZHANG Yuchen²

1. College of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580, China;
2. Petroleum Engineering Institute, Shengli Oilfield Company, SINOPEC, Dongying, Shandong 257015;
3. School of Petroleum Engineering, Yangtze University, Wuhan, Hubei 43000, China

Received:2020-08-04 Published:2023-02-24

摘要/Abstract

摘要： 粉细砂岩油藏的纵向层系较多，层间矛盾严重，出砂堵塞影响提液生产效果。在现有斜直井产能模型的基础上，对筛管、环空充填层、挤压充填层和储层的渗透率细化描述，改进了机械防砂表皮系数公式。通过室内实验分析了防砂体系堵塞规律，认为随着驱替注入量和驱替流量提高，防砂体系堵塞加剧，渗透率最大下降40%。储层颗粒进入套管内，堵塞环空砾石与防砂筛管，导致表皮系数急剧上升，产能下降超过80%。扩大挤压充填半径能够将微粒阻挡在远离井眼的位置，有助于保持油井产能。对分层防砂井充填半径进行优化分析，发现在中低渗透扩大充填半径能够改善层间动用效果。对盘二沙三下区块的防砂井充填参数优化，对渗透率较低的S4层扩大充填半径，措施后油井液量保持稳定，日产油提高9.56 t。

关键词: 粉细砂油藏, 堵塞规律, 产能分析, 分层防砂, 充填半径优化, 层间矛盾

Abstract: The siltstone reservoir has many vertical small layers. Well productivity is affected by sand blocking. Based on the existing productivity model of inclined vertical well, the permeability of screen pipe, annulus filling layer, squeeze filling layer and reservoir are described in detail, and the formula of skin coefficient of mechanical sand control is improved. The blocking law of sand control system is analyzed through laboratory experiments. It is considered that with the increase of displacement volume number and displacement flow, the plugging of sand control system intensifies and the maximum permeability decreases by 40%. Reservoir particles enter the casing and block the annulus gravel and sand control screen, resulting in a sharp increase in skin factor and a decrease in production capacity of more than 80%. Expanding the squeeze packing radius can block particles away from the wellbore and help to maintain oil well productivity. Through the optimization analysis of the filling radius of layered sand control wells, it is found that expanding the filling radius in medium and low permeability can improve the interlayer production effect. The filling parameters of sand control wells in typical blocks are optimized, and the filling radius of S4 layer with low permeability is expanded. With the measures, the oil well fluid volume remains stable, and the daily oil production increases by 9.56 t.

Key words: fine siltstone reservoir, blockage rules, productivity analy, layered sand control, optimized filling radius, interlayer contradiction

中图分类号:

TE343

贾培锋, 崔传智, 赵益忠, 吴忠维, 张雨晨. 粉细砂岩油藏防砂井堵塞规律研究及充填参优化[J]. 西南石油大学学报(自然科学版), 2023, 45(1): 136-144.

JIA Peifeng, CUI Chuanzhi, ZHAO Yizhong, WU Zhongwei, ZHANG Yuchen. Sand Blocking Mechanisms and Sand Control Parameters Optimization Design in Fine Siltstone Reservoirs[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2023, 45(1): 136-144.

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粉细砂岩油藏防砂井堵塞规律研究及充填参优化

Sand Blocking Mechanisms and Sand Control Parameters Optimization Design in Fine Siltstone Reservoirs

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