窄条带状背斜油藏边部注水开发产能影响因素

doi:10.7657/XJPG20240507

新疆石油地质 ›› 2024, Vol. 45 ›› Issue (5): 560-566.doi: 10.7657/XJPG20240507

窄条带状背斜油藏边部注水开发产能影响因素

谢启超¹(), 田亚飞²(), 乐平³, 宋鹏¹, 刘新菊¹, 刘建¹, 刘万涛¹

1.中国石油长庆油田分公司勘探开发研究院，西安 710018
2.中国石油长庆油田分公司第二采油厂，甘肃庆阳 745600
3.西南石油大学油气藏地质及开发工程国家重点实验室，成都 610500

收稿日期:2024-01-17 修回日期:2024-03-02 出版日期:2024-10-01 发布日期:2024-10-09
通讯作者: 田亚飞（1996-），男，陕西宝鸡人，助理工程师，硕士，油藏工程及数值模拟，（Tel）18392785469（Email）tianyafei1223@163.com
作者简介:谢启超（1975-），男，重庆大足人，高级工程师，硕士，油气田开发，（Tel）13119162152（Email）xqc_cq@petrochina.com.cn
基金资助:
中国石油前瞻性基础性技术攻关项目(2021DJ3301);四川省重点研发计划(2020YFQ0034)

Factors Influencing Productivity of Edge Waterflood in Elongated Anticlinal Reservoirs

XIE Qichao¹(), TIAN Yafei²(), YUE Ping³, SONG Peng¹, LIU Xinju¹, LIU Jian¹, LIU Wantao¹

1. Research Institute of Exploration and Development, Changqing Oilfield Company, PetroChina, Xi’an, Shaanxi 710018, China
2. No.2 Oil Production Plant, Changqing Oilfield Company, PetroChina, Qingyang, Gansu 745600, China
3. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China

Received:2024-01-17 Revised:2024-03-02 Online:2024-10-01 Published:2024-10-09

摘要/Abstract

摘要：

JY油田Y油藏为典型窄条带状背斜油藏，其储集层注入水极易沿河道中心方向突进，导致油井快速水淹，产量递减快；由于对水体大小、构造幅度、储集层物性等产能影响因素认识不清，此类油藏开发难度较大。针对上述问题，建立了窄条带状背斜油藏精细数值模型，通过对比论证提出了“边部注水+逐步转注”开发，并在此基础上开展了水体大小、构造幅度、储集层物性等参数对产能的影响研究。结果表明：“边部注水+逐步转注”开发不仅可以增大边水能量，使得井网双向受效，还可以有效延缓构造高部位油井的见水时间，大幅度降低油井含水率。另一方面，在考虑油藏构造特征的前提下，量化了不同影响因素下的产能特征，明确了水体大小、构造幅度、垂向渗透率与水平渗透率之比等参数的合理界限，论证了不同储集层物性下油藏面积的适应性。可为同类型油藏改善注水开发效果提供借鉴。

关键词: 窄条带状背斜油藏, 边部注水, 产能影响因素, 稳油控水, 油井转注, 数值模拟

Abstract:

The Y reservoir in the JY oilfield is a typical elongated anticlinal structure, where the injected water readily advances along channel centerline, resulting in rapid water-flooding and rapid production decline in producers. Development of such reservoirs is challenging due to unclear factors influencing productivity, such as water body size, structural amplitude, and reservoir physical property. To address these issues, a fine numerical model was established for the elongated anticlinal reservoir, and an “edge waterflood + progressive producer-injector conversion” process was proposed. On this basis, the influences of water body size, structural amplitude, and reservoir physical property on productivity were analyzed. The results indicate that the “edge waterflood + progressive producer-injector conversion” process enhances the edge water energy to allow for bidirectional responses of well patterns, and also delays water breakthrough in producers at the structural high to significantly reduce the water cut of oil well. Furthermore, considering the structural characteristics of the reservoir, the production performance under different factors were quantified, reasonable limits for the parameters such as water body size, structural amplitude, and the ratio of vertical permeability to horizontal permeability were defined, and the adaptability of reservoir area under different reservoir physical properties was demonstrated. The study results provide valuable insights for improving waterflood effects in similar reservoirs.

Key words: elongated anticlinal reservoir, edge waterflood, factor influencing productivity, stabilizing oil production and controlling water cut, producer-injector conversion, numerical simulation

中图分类号:

TE341

谢启超, 田亚飞, 乐平, 宋鹏, 刘新菊, 刘建, 刘万涛. 窄条带状背斜油藏边部注水开发产能影响因素[J]. 新疆石油地质, 2024, 45(5): 560-566.

XIE Qichao, TIAN Yafei, YUE Ping, SONG Peng, LIU Xinju, LIU Jian, LIU Wantao. Factors Influencing Productivity of Edge Waterflood in Elongated Anticlinal Reservoirs[J]. Xinjiang Petroleum Geology, 2024, 45(5): 560-566.

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窄条带状背斜油藏边部注水开发产能影响因素

Factors Influencing Productivity of Edge Waterflood in Elongated Anticlinal Reservoirs

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