水平井环空预设多级井底控锥增油实验

doi:10.3969/j.issn.1006-6535.2020.05.022

特种油气藏 ›› 2020, Vol. 27 ›› Issue (5): 145-150.DOI: 10.3969/j.issn.1006-6535.2020.05.022

水平井环空预设多级井底控锥增油实验

王海栋¹, 刘义坤², 孟文波³, 张崇³

1.辽宁石油化工大学,辽宁抚顺 113001;
2.东北石油大学,黑龙江大庆 163318;
3.中海石油有限公司湛江分公司,广东湛江 524051

收稿日期:2019-09-12 修回日期:2020-07-10 出版日期:2020-10-25 发布日期:2022-02-18
作者简介:王海栋(1991—),男,讲师,2014年毕业于哈尔滨石油学院石油工程专业,2020年毕业于东北石油大学石油与天然气工程专业,获博士学位,现主要从事油气田稳油控水开发工作。
基金资助:
中国海洋石油集团有限公司“十三五”科技重大项目“深水开发井钻完井关键技术研究”(CCL2018ZJFN0462);国家科技重大专项“特高含水后期薄差油层剩余油分布及动用界限研究”(2016ZX05010002-004)

Experiment on Controlling Cone and Increasing Oil with Preset Multi-stage Bottoms in Horizontal Well Annulus

Wang Haidong¹, Liu Yikun², Meng Wenbo³, Zhang Chong³

1. Liaoning Shihua University, Fushun, Liaoning 113001, China;
2. Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
3. Zhanjiang Branch of China National Offshore Oil Corporation, Zhanjiang, Guangdong 524051, China

Received:2019-09-12 Revised:2020-07-10 Online:2020-10-25 Published:2022-02-18

摘要/Abstract

摘要： 为了降低水平井底水锥进和趾跟效应的影响,提出水平井环空预设多级井底的控锥技术,采用3D大型底水油藏模拟开发设备,分别对常规水平井、中心管水平井和多井底水平井开展了水脊形态和驱油效果实验,从而验证环通多级井底控锥技术的有效性。结果表明,采用多井底水平井比常规水平井以及中心管水平井开发优势明显,多级井底系统使井筒沿程的压力剖面更均衡,能削弱趾跟效应,延迟底水突破时间,增大波及体积,其开发效果比常规水平井、中心管水平井采收率分别提高9.98、5.95个百分点。对水平井环通预设多级人造井底稳油控锥技术的矿场转化应用进行工艺论证表明,环空预设多级人造井底结构复杂,但操作简单方便,具有矿场应用潜力。该研究可为底水油气藏控水高效开发提供技术借鉴与支撑。

关键词: 底水油藏, 水平井, 多级井底, 趾跟效应, 底水控锥

Abstract: For horizontal wells, in order to reduce the impact of bottom water coning and toe end effect, coning controlling technology with preset multi-stage bottoms in horizontal well annulus was proposed. Simulate development equipment in 3D large-scale bottom water reservoirs. And the experiment on water cresting shape and oil displacement effect was carried out in conventional horizontal wells, horizontal wells with central tube and horizontal wells with multiple bottoms, respectively. Through the experiment, the effectiveness of coning controlling technology with multiple bottoms in annulus was verified. The results show that horizontal wells with multiple bottoms have obvious advantages over conventional horizontal wells and horizontal wells with central tube. The multi-bottom system makes the pressure profile along borehole more balanced, weakens the toe end effect, delays the bottom water breakthrough time, and increases swept volume, whose development effect is 9.98 and 5.95 percentage points higher than that of conventional horizontal wells and horizontal wells with central tube, respectively. The field application of coning controlling and oil stabilizing technology with multiple man-made bottoms in horizontal well annulus shows that the structure of preset multi-stage man-made bottoms in annulus is complicated, while the operation is simple, which has application potential on field. This research can provide technical reference and support for the efficient water controlling development in bottom water reservoirs.

Key words: bottom water reservoir, horizontal well, multi-stage well bottoms, toe end effect, coning control of bottom water

中图分类号:

TE355.6

王海栋, 刘义坤, 孟文波, 张崇. 水平井环空预设多级井底控锥增油实验[J]. 特种油气藏, 2020, 27(5): 145-150.

Wang Haidong, Liu Yikun, Meng Wenbo, Zhang Chong. Experiment on Controlling Cone and Increasing Oil with Preset Multi-stage Bottoms in Horizontal Well Annulus[J]. Special Oil & Gas Reservoirs, 2020, 27(5): 145-150.

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水平井环空预设多级井底控锥增油实验

Experiment on Controlling Cone and Increasing Oil with Preset Multi-stage Bottoms in Horizontal Well Annulus

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