Oil & Gas and Petroleum
Under-Balance Drilling Technology
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Under-Balance Drilling Technology Course
Introduction:
This course provides a comprehensive and practical knowledge of non-conventional techniques used in advanced drilling and completion processes to enhance drilling performance and oil recovery.
Course Objectives:
Upon completion of the course, participants will be able to:
- Deal with issues of narrow pore/fracture pressure gradient windows, lost circulation, abnormal pressures, kick/loss situations,
- Drill wells in depleted reservoirs,
- Acquire basic concepts of managed and underbalanced pressure drilling,
- Review various managed pressure drilling methods and equipment,
- Identify typical situations calling for managed pressure drilling and assess potential benefit,
- Review typical applications, equipment, and operation of underbalanced drilling.
Who Should Attend?
Drilling and mud engineers, superintendents and supervisors, and all professionals involved in well planning and operation.
Course Outlines:
BASIC PRINCIPLES OF MANAGED PRESSURE DRILLING
- History, objectives, and definitions.
- Occurrence and implications of narrow pore and fracture pressures windows on well design and well control.
- Dynamic factors affecting bottom hole pressure.
- Mathematics and examples.
MUD CAP DRILLING
- History of mud cap drilling.
- Pressurized and floating mud cap.
- Mud cap operation.
MANAGED PRESSURE DRILLING EQUIPMENT
- Rotating control devices.
- Chokes.
- Drill pipe non-return valves and downhole annular valves.
- ECD reduction tools.
- Coriolis flowmeter, friction pump.
MANAGED PRESSURE DRILLING USING PRESSURE AS PRIMARY CONTROL
- Introduction, open and closed back pressure systems.
- Automated back pressure system technology.
- Continuous circulating system technology.
MANAGED PRESSURE DRILLING USING FLOW AS PRIMARY CONTROL
- Process description.
- Equipment and technology.
- Applications.
UNDERBALANCED DRILLING
- Underbalanced drilling objectives and applications.
- Underbalanced drilling equipment and operations.
CONCLUSION
- Advantages of managed and underbalanced drilling.
- Potential and limitations.
- Typical applications.
