TAILIEUCHUNG - Lecture Well control

Lecture Well control present the content: well control principles, warning signs of kicks, secondary control, primary control, lost circulation, solids removal, excessive dilution of the mud (due to watering-back), gas cutting of the mud, reduced height of mud column, primary indicators of a kick, secondary indicators, . | WELL CONTROL Trình bày ĐỖ QUANG KHÁNH Bộ môn Khoan Khai thác Dầu khí Khoa Kỹ thuật Địa chất và Dầu khí Đại học Bách Khoa TP. HCM Email dqkhanh@ CONTENT 1. INTRODUCTION 2. WELL CONTROL PRINCIPLES 3. WARNING SIGNS OF KICKS 4. SECONDARY CONTROL Well Control 2 GEOPET CONTENT 5. WELL KILLING PROCEDURES 6. BOP EQUIPMENT 7. BOP STACK ARRANGEMENTS 8. EXERCISES Well Control 3 GEOPET 1. INTRODUCTION Well Control 4 GEOPET Well Control 5 GEOPET INTRODUCTION Ensure that fluid oil gas or water does not flow in an uncontrolled way from the formations being drilled into the borehole and eventually to surface. This flow will occur if the pressure in the pore space of the formations being drilled pf gt the hydrostatic pressure exerted by the column of mud in the wellbore pbh . It is essential that pf due to the column of fluid exceeds the formation pressure at all times during drilling. Well Control 6 GEOPET Well Control 7 GEOPET INTRODUCTION If for some reason pf gt pbh an influx of fluid into the borehole known as a kick will occur. If no action is taken to stop the influx of fluid once it begins then all of the drilling mud will be pushed out of the borehole and the formation fluids will be flowing in an uncontrolled manner at surface. This would be known as a Blowout. This flow of the formation fluid to surface is prevented by the secondary control system. Secondary control is achieved by closing off the well at surface with valves known as Blowout Preventers BOPs. Well Control 8 GEOPET Well Control 9 GEOPET Well Control 10 GEOPET INTRODUCTION The control of the formation pressure either by ensuring that the borehole pressure is greater than the formation pressure known as Primary Control or by closing off the BOP valves at surface known as Secondary Control is generally referred to as keeping the pressures in the well under control or simply well control. Well Control 11 GEOPET INTRODUCTION When pressure control over the well is lost swift action must be taken to .

• Hoá dầu
• Well control
• Khoan Khai thác dầu khí
• Well control principles
• Warning signs of kicks
• Primary Control (PC)
• Secondary Control (SC)
• Lecture Well Drilling Engineering
• Well Drilling Engineering
• Bài giảng Kỹ thuật khoan giếng
• Kicks and Well control
• Kick control
• Dynamic kick control
• Kick containment
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• Bài giảng Kỹ thuật khoan
• Basic well control
• Secondary control
• Well killing procedures
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• Deepwater special considerations
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