裂缝性礁灰岩过饱和充填控水影响因素分析

doi:10.3969/j.issn.1006-6535.2022.02.024

特种油气藏 ›› 2022, Vol. 29 ›› Issue (2): 164-169.DOI: 10.3969/j.issn.1006-6535.2022.02.024

裂缝性礁灰岩过饱和充填控水影响因素分析

张伟¹, 戴宗¹, 龚斌², 王亚会¹, 张晓林¹, 石欣²

1.中海石油(中国)有限公司深圳分公司,广东深圳 518054;
2.南京特雷西能源科技有限公司,江苏南京 210000

收稿日期:2021-04-25 修回日期:2021-11-09 出版日期:2022-04-25 发布日期:2023-01-10
作者简介:张伟(1973—),男,高级工程师,1995年毕业于西南石油学院石油工程专业,2008年毕业于英国赫里欧·瓦特大学石油工程专业,获硕士学位,现主要从事海洋油气田开发研究及管理工作。
基金资助:
中海石油科技重大专项“南海东部油田上产2000万吨关键技术研究”子课题“礁灰岩油田高效开发技术研究”(CNOOC-KJ 135 ZDXM 37 SZ 04 SZ)

Analysis on Factors Affecting Water Control by Supersaturated Filling of Fractured Reef Limestone

Zhang Wei¹, Dai Zong¹, Gong Bin², Wang Yahui¹, Zhang Xiaolin¹, Shi Xin²

1. CNOOC Shenzhen Branch, Shenzhen, Guangdong 518054, China;
2. Nanjing Tracy Energy Technology Co., Ltd., Nanjing, Jiangsu 210000, China

Received:2021-04-25 Revised:2021-11-09 Online:2022-04-25 Published:2023-01-10

摘要/Abstract

摘要： 为厘清连续封隔体充填控堵水机理及充填主控因素,通过建立裂缝充填数学模型,模拟充填施工过程中天然裂缝开度、裂缝走向、导流能力、充填程度、充填量随压力的变化,分析了影响充填施工过程的主要因素,并结合油田实际,总结了见效特点及原因。研究表明:裂缝初始开度、裂缝走向是影响控水施工过程的主要地质因素;充填过程中,特别是初期的泵注压力能否达到有效充填压力门槛,对裂缝封堵效果影响明显。该研究为措施井优选和效果评价提供了借鉴,为过饱和裂缝充填控水定量研究奠定基础。

关键词: 控堵水, 过饱和充填, 连续封隔体, 裂缝, 礁灰岩, 南海

Abstract: In order to clear up the mechanism of water control and shutoff by continuous packer filling and the main controlling factors of filling, a mathematical model of fracture filling was established to simulate the changes in natural fracture opening, conductivity, filling degree, and filling volume with pressure in the filling process, the main factors affecting the filling process were analyzed, and the effectiveness characteristics and reasons were summarized in conjunction with the actual oilfield conditions. Research shows that the initial fracture opening and fracture direction are the main geological factors that affect the water control construction process; whether the pumping pressure in the filling process, especially in the initial stage, reach the threshold of effective filling pressure has a significant impact on the fracture plugging effect. This study provides a reference for the optimization and effect evaluation of measure wells, and lays a foundation for the quantitative study of water control by supersaturated fracture filling.

Key words: water control and shutoff, supersaturated filling, continuous packer, fracture, reef limestone, South China Sea

中图分类号:

TE357

张伟, 戴宗, 龚斌, 王亚会, 张晓林, 石欣. 裂缝性礁灰岩过饱和充填控水影响因素分析[J]. 特种油气藏, 2022, 29(2): 164-169.

Zhang Wei, Dai Zong, Gong Bin, Wang Yahui, Zhang Xiaolin, Shi Xin. Analysis on Factors Affecting Water Control by Supersaturated Filling of Fractured Reef Limestone[J]. Special Oil & Gas Reservoirs, 2022, 29(2): 164-169.

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裂缝性礁灰岩过饱和充填控水影响因素分析

Analysis on Factors Affecting Water Control by Supersaturated Filling of Fractured Reef Limestone

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