深水钻井井筒环空气体上升速度研究

doi:10.3976/j.issn.1002-4026.2022.04.010

山东科学 ›› 2022, Vol. 35 ›› Issue (4): 77-83.doi: 10.3976/j.issn.1002-4026.2022.04.010

深水钻井井筒环空气体上升速度研究

王晓慧(), 蒋海军

中国石油化工股份有限公司石油工程技术研究院战略规划研究所,北京 100101

收稿日期:2021-09-08 出版日期:2022-08-20 发布日期:2022-07-25
作者简介:王晓慧(1992—),博士,助理研究员,研究方向为石油工程战略研究和规划编制以及石油工程项目攻关及前沿技术。Tel:18518095693,E-mail: wangxh.sripe@sinopec.com
基金资助:
中国石化石油工程技术研究院创新基金(SYGCY-CX-04)

Increasing the velocity of annular gas in deepwater drilling

WANG Xiao-hui(), JIANG Hai-jun

Strategic Planning Institute,SINOPEC Research Institute of Petroleum Science, Beijing 100101, China

Received:2021-09-08 Online:2022-08-20 Published:2022-07-25

摘要/Abstract

摘要：

在深水钻井的过程中,及早准确地监测到气侵的发生对于钻井安全至关重要。在哈格多恩和布朗方法的基础上建立了深水钻井气侵发生后气体上升速度模型,针对井斜角对气体流型划分原则的影响及气体滑脱速度的改变进行了修正,结合气侵后井筒气液流动规律,实现了气侵发生后气体到达海底井口时间的实时计算,所得结果能够有效反映深水斜井钻遇气侵后井筒环空的流动规律,对于气侵及井控的监测具有重要意义。

关键词: 深水, 井筒环空, 气侵, 上升速度, 计算模型

Abstract:

In the process of deepwater drilling, early and accurate monitoring of gas invasion is crucial for drilling safety. Based on Hagdorn and Brown’s method, this study establishes a model for increasing gas velocity after gas invasion in deepwater drilling, optimizes the influence of well deviation angle on the division principle of gas-flow pattern and gas slippage velocity in deviated wells, and realizes the real-time calculation of the time when the gas reaches subsea wellhead in accordance with the gas-liquid flow law in the wellbore after gas invasion. The results can effectively reflect the flow law of wellbore annulus after the gas invasion in deepwater-deviated well drilling and are of great significance for gas-invasion monitoring and well control.

Key words: deepwater, wellbore annulus, gas invasion, increasing velocity, numerical model

中图分类号:

TE52

王晓慧, 蒋海军. 深水钻井井筒环空气体上升速度研究[J]. 山东科学, 2022, 35(4): 77-83.

WANG Xiao-hui, JIANG Hai-jun. Increasing the velocity of annular gas in deepwater drilling[J]. Shandong Science, 2022, 35(4): 77-83.

图/表 4

参考文献 19

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项目	密度/(g·m^-3)	等压比热/(J·kg^-1·℃^-1)	导热系数/(W·m^-1·℃^-1)	温度/℃
钻井液	1.45	1 675	1.73	22
海水	1.02	4 182	0.6	23

井段	井眼尺寸/mm	套管外径/mm	井段实际顶深/m	井段实际底深/m
一开	914.40	762.000	110.0	177.10
二开	660.40	508.000	177.1	992.57
三开	444.50	314.325	998.0	1 700.29
四开	311.15	裸眼	2 885.0	2 500.12

深水钻井井筒环空气体上升速度研究

Increasing the velocity of annular gas in deepwater drilling

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