控压钻井设备-哈里伯顿课件.ppt
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1、Managed Pressure Drilling(MPD)Technology Overview控压钻井技术GeoBalanceTM MANAGED PRESSURE DRILLING SYSTEMFeb 11 2009Presentation Outline MPD Introduction 控压钻井技术介绍 Job Design 控压作业 MPD Equipment 控压钻井工具 Communication 控压钻井团队 Rig Site Procedures 控压钻井操作程序 Case histories 控压钻井实例Importance of HSEIf it cant be don
2、e safely.It wont be doneGlobal Well Operator Issues Highly deviated well conditions Bore hole stability problems Well control while drilling Narrow drilling margins Depleted Reservoirs Risk of sticking,expensive fishing jobs and side tracks Shallow flow water sandsIntroduction to MPD Technology控压钻井技
3、术介绍Advantages of MPD 控压钻井技术应用效应 Improved ROP and reduced drilling time改善钻速和减少钻井时间 Improved success with drilling narrow pressure margins钻井狭窄压力窗口 Reduced wellbore breathing,influxes and lost circulation减少的井筒呼吸,成功应付井侵和失返 Improve reservoir productivity by decreasing amount of over balanced 保护油气层不受破坏 Im
4、proved wellbore quality by minimising wellbore collapse减少井口崩溃“Adaptive drilling process used to precisely control the annular pressure profile throughout the wellbore.The objectives are to ascertain the downhole pressure environment limits and to manage the annular hydraulic pressure profile accordi
5、ngly”.(IADC)Managed Pressure Drilling DefinitionManaged Pressure Drilling OperationsControlling pressure in the annulus 控制井口压力 Not a new concept Technique has been used for decades When used while drilling with conventionally with standard equipmentWell control event 井控情况下 Control BHP by applying ba
6、ck-pressure at surface 通过地面加回压控制井底压力 Closed-loop(BOP is closed)闭环(防喷器关闭)Circulation is through a choke 通过节流阀循环General Comparison of drilling methods钻井方法对比 Passive MPD(hydrostatic mud weight always above pore pressure)被动控压钻井(泥浆静液柱压力总是高于地层压力)MPD used as a safety system 控压钻井作为一种安全体系 Rotating Control De
7、vice(RCD)旋转控制设备 Manual Choke(Rig Choke for US land wells)手动节流设备(用于美国陆上井的节流设备)Active MPD(hydrostatic mud weight slightly above or sometimes below pore pressure)主动控压(泥浆静液柱稍高于或有时低于地层压力)MPD being used to walk the line 使用MPD“压线走”E.g.narrow pore pressure to frac pressure window 如地层压力和破裂压力之间的窗口很窄 RCD with
8、change out system like additional BOPs 增加旋转控制设备 Manual choke with continuous control or automated choke system 手动节流,连续控制或自动节流系统 Back pressure pump system for constant BHP 回压补偿泵,保持井底压力不变MPD Operations 控压作业 Mud-cap drilling(with under or overbalanced fluid)泥浆帽钻井(欠或过平衡)Usually use for fractured limesto
9、nes or granites 通常用于裂缝性灰岩或花岗岩 Drilling with lost returns 失返钻进 May have partial level in annulus 环空有部分液面MPD Operations 控压作业 RCDPLC Controlled DRILLINGCHOKEMANIFOLDDRILL CUTTINGSPROCESSINGMUD to PITSMud Pits PUMPECD equal to or slightly greater than pore pressureManaged Pressure Drilling Basic Overvie
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