Ebano油田裂缝发育模式及水平井开发优化研究

doi:10.3969/j.issn.1006-6535.2021.03.010

特种油气藏 ›› 2021, Vol. 28 ›› Issue (3): 69-75.DOI: 10.3969/j.issn.1006-6535.2021.03.010

Ebano油田裂缝发育模式及水平井开发优化研究

王希贤

中国石化国际石油工程公司,北京 100728

收稿日期:2020-10-06 修回日期:2021-03-30 出版日期:2021-06-25 发布日期:2022-02-16
作者简介:王希贤(1966—),男,高级工程师,1990年毕业于中山大学地质学专业,现从事油气田地质研究与开发管理方面的工作。
基金资助:
国家科技重大专项“超深层稠油有效开发技术研究与试验”(2016ZX05012-004)

Study on Fracture Development Mode and Horizontal Well Development Optimization in Ebano Oilfield

Wang Xixian

SINOPEC International Petroleum Service Corporation, Beijing 100728, China

Received:2020-10-06 Revised:2021-03-30 Online:2021-06-25 Published:2022-02-16

摘要/Abstract

摘要： 针对Ebano油田Ksf和Kan层裂缝连通性认识不清的问题,运用岩心分析、PLT测试、成像测井资料、油藏数值模拟及地震相干属性技术,对裂缝在纵向和平面上的连通性进行了研究。研究表明:Ebano油田以半开启缝为主,裂缝分为近南北向的高角度构造缝和近东西向的水平层理缝,高角度裂缝和水平缝构成复杂的网状系统裂缝;Ksf和Kan层裂缝连通性可划分为上下连通且连通性好、上下连通且连通性一般及上下不连通3类;裂缝和原油黏度是决定油井产能的主控因素,水平段长度对产能影响小。将研究成果应用于Ebano油田东南部,开展短水平段开发试验,取得了较好的开发效果,2020年单井初期平均日产油是2012至2014年单井初期平均日产油的141%。研究成果对不同类型裂缝开发方式具有借鉴意义。

关键词: 裂缝发育规律, 水平井, 数值模拟, 优化设计, 墨西哥Ebano油田

Abstract: To address the poor understanding of fracture connectivity in the Ksf and Kan formations in the Ebano Oilfield, the fracture connectivity in the longitudinal and planar directions was studied with core analysis, PLT testing, imaging logging data, reservoir numerical simulation and seismic coherent attribute technologies. It was found in the study that the Ebano Oilfield was dominated by semi-open fractures which included high-angle tectonic fractures in the near north-south direction and horizontal bedding fractures in the near east-west direction, and the high-angle fractures and horizontal fractures formed a complex network system of fractures; the fracture connectivity of the Ksf and Kan formations was divided into three types: excellent top-bottom connectivity, normal top-bottom connectivity, and top-bottom disconnection; fracture and crude oil viscosity were the main controlling factors to determine the productivity of oil wells, and the length of the horizontal interval had little effect on productivity. The study results were applied to short horizontal section development tests in the southeastern of Ebano Oilfield, and achieved better development results. The average initial daily oil production of a single well in 2020 was 141% of the average initial daily oil production of a single well from 2012 to 2014. There is much for reference of the results of the study to different types of fracture development.

Key words: fracture development pattern, horizontal well, numerical simulation, optimal design, Ebano Oilfield, Mexico

中图分类号:

TE344

王希贤. Ebano油田裂缝发育模式及水平井开发优化研究[J]. 特种油气藏, 2021, 28(3): 69-75.

Wang Xixian. Study on Fracture Development Mode and Horizontal Well Development Optimization in Ebano Oilfield[J]. Special Oil & Gas Reservoirs, 2021, 28(3): 69-75.

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Ebano油田裂缝发育模式及水平井开发优化研究

Study on Fracture Development Mode and Horizontal Well Development Optimization in Ebano Oilfield

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