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水平井“工厂化”部署与设计优化——以四川威远页岩气藏为例
Deployment and optimization of "factory-like" horizontal well: a case study on Weiyuan shale gas reservoirs, Sichuan Basin
赵 国 英
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作者单位:中国石油集团长城钻探工程有限公司地质研究院
中文关键字:页岩气 水平井 工厂化 地质导向 四川盆地 威远区块
英文关键字:Shale gas; Horizontal well; Factory-like; Geo-steering; Sichuan Basin; Weiyuan block
中文摘要: 威远地区位于四川盆地边缘,其页岩气资源丰富,但有机碳含量和含气量偏低,且埋深较大(2 800 ~ 4 000 m),
地表条件复杂,开发难度较大。为实现四川威远页岩气规模化经济有效开发,通过精细地质研究,落实断层及裂缝分布特征,建
立三维地质模型,明确页岩储层的“甜点”区分布及水平井纵向有利靶体;采用平台丛式水平井“工厂化”布井模式,优化钻井
及压裂地质设计,现场实施精准地质导向技术进一步保障水平井目标箱体钻遇率。结果表明:水平井“工厂化”开发通过地质—
钻井—压裂一体化设计施工,实现了页岩气规模效益开发的目的。

DOI: 10.12055/gaskk.issn.1673-3177.2018.01.008



英文摘要:In Weiyuan block which is located at marginal Sichuan Basin and structurally complex, there are abundant shale gas resources
with low organic carbon content and gas content. Moreover, these resources are featured by deeper burial depth (2 800–4 000
m) and complex surface conditions, resulting in much challenge to their development. In order to develop them extensively, economically
and efficiently, the distribution characteristics of faults and fractures were ascertained by way of fine geologic research, and the
distribution of "sweet spots" in shale reservoirs and the favorable targets in the vertical direction of horizontal well were determined
by using a 3D geological model. Then, the "factory-like" deployment pattern of cluster horizontal well on pad was adopted to optimize
the geological design of drilling and fracturing, and the precise geo-steering technology was applied on site to ensure the target box
drilling ratio of horizontal wells. It is indicated that the "factory-like" pattern, by virtue of integrated geology-drilling-fracturing design
and construction, helps realize the large-scale beneficial development of shale gas reservoirs.
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国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
主管单位:中国石油西南油气田公司  主办单位:中国石油西南油气田公司勘探开发研究院
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