水力喷射微小井眼水平井流动耦合模型及影响规律

doi:10.7623/syxb201808010

石油学报 ›› 2018, Vol. 39 ›› Issue (8): 947-954.DOI: 10.7623/syxb201808010

水力喷射微小井眼水平井流动耦合模型及影响规律

迟焕鹏¹, 单衍胜¹, 李奎², 胡志方¹, 毕彩芹¹

1. 中国地质调查局油气资源调查中心北京 100083;
2. 中国石化石油工程技术服务有限公司江汉石油工程有限公司钻井一公司湖北潜江 433121

收稿日期:2017-11-07 修回日期:2018-06-02 出版日期:2018-08-25 发布日期:2018-09-04
通讯作者: 迟焕鹏,男,1989年1月生,2010年获中国石油大学(华东)学士学位,2015年获中国石油大学(北京)博士学位,现为中国地质调查局油气资源调查中心工程师,主要从事微小井眼钻井工程及煤层气勘探开发研究工作。Email:chp2121@126.com
作者简介:迟焕鹏,男,1989年1月生,2010年获中国石油大学(华东)学士学位,2015年获中国石油大学(北京)博士学位,现为中国地质调查局油气资源调查中心工程师,主要从事微小井眼钻井工程及煤层气勘探开发研究工作。Email:chp2121@126.com

Coupled flow model and influence rule of hydra-jet micro-hole horizontal well

Chi Huanpeng¹, Shan Yansheng¹, Li Kui², Hu Zhifang¹, Bi Caiqin¹

1. Oil and Gas Survey Center, China Geological Survey, Beijing 100083, China;
2. No.1 Drilling Company, Sinopec Jianghan Petroleum Engineering Ltd., Hubei Qianjiang 433121, China

Received:2017-11-07 Revised:2018-06-02 Online:2018-08-25 Published:2018-09-04

摘要/Abstract

摘要：

水力喷射微小井眼水平井可以在储层中快速建立起几十米的流动通道，从而实现"一井多层，一层多眼"开采，被认为是可提高单井产量、降低成本和有效保护油气层的潜力技术。针对微小井眼参数设计的问题，建立了油藏入流和井眼流动耦合的多微小水平井眼产能计算模型，研究了井眼参数对产能的影响规律，并应用正交试验法评价了各参数的敏感性。结果表明，微小井眼水平井产量受井眼参数影响的敏感性强弱顺序依次为分支数目、井眼长度、井眼直径、分支夹角，最主要的影响因素为分支数目和井眼长度。微小井眼水平井井眼参数设计的一般原则是分支夹角不小于90°，各井眼在垂直于主井筒的平面内均布，钻井工艺水平允许的前提下尽量增加分支数目、井眼长度和直径。

关键词: 微小井眼, 产能计算模型, 井眼参数, 敏感性分析, 设计原则

Abstract:

The water-jet radial horizontal well can rapidly create the flow channels tens of meters long, so as to realize the exploitation of "one well with multiple layers and one layer with multiple holes". It is considered as a potential technology to increase the single well output, reduce cost and protect hydrocarbon reservoirs effectively. Aiming at the wellbore parameter design of radial horizontal well, the productivity calculation model of radial horizontal well has been established by coupling reservoir inflow and wellbore flow. The influence rules of wellbore parameters on the productivity of radial horizontal well have been analyzed in this study, and orthogonal test is applied to evaluate the sensitivity of each parameter. The results show that the wellbore parameters influencing the output of radial horizontal well are sequenced according to their sensitivity degrees as below:branch number, wellbore length, wellbore diameter and branch angle, of which branch number and wellbore length are the two most important parameters. The general principles for the wellbore parameter design of radial horizontal well are that the branch angle is not less than 90°, the wellbores are distributed uniformly on the plane perpendicular to the main shaft, and the branch number, wellbore length and diameter should be increased to the utmost based on the current drilling process.

Key words: micro hole, productivity calculation model, wellbore parameter, sensitivity analysis, design principles

中图分类号:

TE355.6

迟焕鹏, 单衍胜, 李奎, 胡志方, 毕彩芹. 水力喷射微小井眼水平井流动耦合模型及影响规律[J]. 石油学报, 2018, 39(8): 947-954.

Chi Huanpeng, Shan Yansheng, Li Kui, Hu Zhifang, Bi Caiqin. Coupled flow model and influence rule of hydra-jet micro-hole horizontal well[J]. Acta Petrolei Sinica, 2018, 39(8): 947-954.

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水力喷射微小井眼水平井流动耦合模型及影响规律

Coupled flow model and influence rule of hydra-jet micro-hole horizontal well

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