控压钻井井底气侵停止与否实时判别方法研究

何淼; 柳贡慧; 李军; 张涛; 李梦博; 郭庆丰

doi:10.3879/j.issn.1000-0887.2015.08.008

控压钻井井底气侵停止与否实时判别方法研究

doi: 10.3879/j.issn.1000-0887.2015.08.008

何淼¹,
柳贡慧^1,2,
李军¹,
张涛²,
李梦博³,
郭庆丰⁴

¹中国石油大学石油工程学院,北京 102249;²北京信息科技大学,北京 100192;³中海油研究总院,北京 100027;⁴中国石油勘探开发研究院,北京 100083

基金项目: 国家自然科学基金（重点项目）（51334003）；国家自然科学基金（面上项目）（51274221；51274045；51374223）

详细信息

作者简介:
何淼（1989—），男，湖北荆门人，博士生(通讯作者. E-mail: 18810459934@163.com).

中图分类号: TE21
计量
- 文章访问数: 1085
- HTML全文浏览量: 63
- PDF下载量: 852
- 被引次数: 0
出版历程
- 收稿日期: 2015-02-02
- 修回日期: 2015-06-24
- 刊出日期: 2015-08-15

A Real-Time Identification Method for the Bottomhole Gas Invasion State in Managed Pressure Drilling

¹School of Petroleum Engineering, China University of Petroleum,Beijing 102249, P.R.China;²Beijing Information Science & Technology University, Beijing 100192, P.R.China;³CNOOC Research Institute, Beijing 100027, P.R.China;⁴Research Institute of Petroleum Exploration & Development, Beijing 100083, P.R.China

Funds: The National Natural Science Foundation of China（Key Program）（51334003）;The National Natural Science Foundation of China（General Program）（51274221;51274045;51374223）

摘要

摘要: 实时判别井底气侵停止与否是控压钻井井控方法的关键，直接关系到基于立压控制法循环排气或常规关井等后续作业的选取.综合考虑气体运移膨胀和气体溶解的因素，指出出入口流量一致并不等同于井底气侵停止，两者存在时间先后关系.基于快速施加井口回压控制方法，建立了控压钻井井筒与地层耦合的多相变质量流动模型，采用有限差分法迭代求解，模型计算值与实验测量值吻合较好.模拟结果表明，出口流量有无明显拐点是区分出入口流量一致和井底气侵停止时间先后的标志.一旦井底气侵停止，立管压力的二阶导数会迅速降至0点附近且趋于稳定.根据上述参数变化特征，提出了基于出入口流量和立管压力实时监测的井底气侵停止与否实时判别方法.该研究对于完善控压钻井井控理论具有重要的指导意义.
- 控压钻井 /
- 出入口流量 /
- 井口回压 /
- 立管压力 /
- 二阶导数
Abstract: Real-time identification of the bottomhole gas invasion state is the key to well control during managed pressure drilling (MPD), which is directly related to the selection of follow-up operations involving the gas circulation exhaust based on standpipe pressure control or the conventional shut-in procedure. In view of the factors of gas migration expansion and dissolution, it is pointed out here that the equilibrium between outlet flow and inlet flow does not directly mean the stop of bottomhole gas invasion, and there is a precedence relationship between them. Based on the rapidly increasing wellhead back pressure control method, an MPD wellbore-formation coupling model for multiphase variable-mass flow was established, and the finite difference method was used to iteratively solve this model. The calculated results agreed well with the experimental measured ones. The simulation results show that the obvious inflexion point of the outlet flow is a sign for distinguishing the precedence relationship between the outlet-inlet flow equilibrium and the bottomhole gas invasion stop. Once the bottomhole gas invasion stops, the 2nd derivative of the standpipe pressure will quickly drop to near zero and keep stable thereafter. According to the above parameter variation characteristics, a real-time identification method for the bottomhole gas invasion state based on the outlet and inlet flow as well as the real-time monitored standpipe pressure was proposed. This study has guiding significance for the improvement of the MPD well control theory.
- managed pressure drilling /
- outlet and inlet flow /
- wellhead back pressure /
- standpipe pressure /
- 2nd derivative

HTML全文

参考文献(17)

[1]	Syltoy S, Eide S E, Berg P C, Torvund S, Larsen T, Fjeldberg H, Bjorkevoll K S, McCaskill J W, Prebensen O I, Low E. Highly advanced multitechnical MPD concept extends achievable HPHT targets in the north sea[C]// SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition.Abu Dhabi, UAE, 2008.
[2]	徐朝阳, 孟英峰, 魏纳, 李皋, 万里平. 一维气液两相漂移模型的AUSMV算法研究[J]. 应用数学和力学, 2014,35(12): 1373-1382.(XU Chao-yang, MENG Ying-feng, WEI Na, LI Gao,WAN Li-ping. Research on the AUSMV scheme for 1D gas-liquid two-phase flow drift flux models[J]. Applied Mathematics and Mechanics,2014,35(12): 1373-1382.（in Chinese））
[3]	梅凤翔. 变质量完整力学系统的Lie对称与守恒量[J]. 应用数学和力学, 1999,20(6): 592-596.（MEI Feng-xiang. Lie symmetries and conserved quantities of holonomic variable mass systems[J]. Applied Mathematics and Mechanics,1999,20(6): 592-596.（in Chinese））
[4]	孔祥伟, 林元华, 邱伊婕, 袁继明. 气侵钻井过程中井底衡压的节流阀开度控制研究[J]. 应用数学和力学, 2014,35(5): 572-580.（KONG Xiang-wei, LIN Yuan-hua, QIU Yi-jie, YUAN Ji-ming. Research on the throttle valve opening degree control to keep bottomhole pressure in balance when gas influx occurs during drilling operations[J]. Applied Mathematics and Mechanics,2014,35(5): 572-580.（in Chinese））
[5]	Santos H M, Reid P I, Jones J L, McCaskill J. Developing the micro-flux control method—part 1: system development, field test preparation, and results[C]//SPE/IADC Middle East Drilling Technology Conference and Exhibition.Dubai, UAE, 2005.
[6]	Das A K, Smith J R, Frink P J. Simulations comparing different initial responses to kicks taken during managed pressure drilling[C]//IADC/SPE Drilling Conference.Orlando, Florida, USA, 2008.
[7]	Guner H. Simulation study of emerging well control methods for influxes caused by bottomhole pressure fluctuations during managed pressure drilling[D]. Master Thesis. Louisiana State University, 2009.
[8]	Davoudi M, Smith J R, Patel B, Chirinos J E. Evaluation of alternative initial responses to kicks taken during managed pressure drilling[C]//IADC/SPE Drilling Conference and Exhibition.New Orleans, Louisiana, USA, 2010.
[9]	Bacon W, Tong A Y, Gabaldon O R, Sugden C, Suryanarayana P V. An improved dynamic well control response to a gas influx in managed pressure drilling operations[C]//IADC/SPE Drilling Conference and Exhibition.San Diego, California, USA, 2012.
[10]	Hasan A R, Kabir C S. A study of multiphase flow behavior in vertical wells[J]. SPE Production Engineering,1988,3(2): 263-272.
[11]	Perez-Tellez C, Smith J R, Edwards J K. A new comprehensive, mechanistic model for underbalanced drilling improves wellbore pressure predictions[J].SPE Drilling and Completion,2003,18(3): 199-208.
[12]	YU Meng-jiao, Vajargah A K, Miska S Z, Majidi R, Ozbayoglu M E. Taking the proper action to gas influx during constant bottomhole pressure technique of managed pressure drilling[C]//Offshore Technology Conference.Houston, Texas, USA, 2013.
[13]	何淼, 柳贡慧, 李军, 李梦博, 王宏民. 气侵期间岩屑运移规律研究[J]. 科学技术与工程, 2014,14(16): 27-31.（HE Miao, LIU Gong-hui, LI Jun, LI Meng-bo, WANG Hong-min. The research of cuttings migration during gas invasion[J].Science Technology and Engineering,2014,14(16): 27-31.（in Chinese））
[14]	DUAN Zhen-hao, MAO Shi-de. A thermodynamic model for calculating methane solubility, density and gas phase composition of methane-bearing aqueous fluids from 273 to 523 K and from 1 to 2000 bar[J]. Geochimica et Cosmochimica Acta,2006,70(13): 3369-3386.
[15]	李士伦. 天然气工程[M]. 北京: 石油工业出版社, 2008.（LI Shi-lun. Gas Engineering [M]. Beijing: Petroleum Industry Press, 2008.（in Chinese））
[16]	Nas S. Kick detection and well control in a closed wellbore[C]//IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition.Denver, Colorado, USA, 2011.
[17]	Lopes C A. Feasibility study on the reduction of hydrostatic pressure in a deep water riser using a gas-lift method[D]. PhD Thesis. Baton Rouge, LA, USA: Louisiana State University, 2003.