A positive displacement motor is a progressing cavity pump run in reverse. Mud forced through the power section turns the rotor inside an elastomer stator, and the number of lobes determines the trade-off between speed and torque: fewer lobes give higher speed and lower torque, more lobes give the opposite. Matching that to the bit and formation is the core selection decision.

Differential pressure is the control parameter. The pressure drop across the motor is proportional to the torque it is producing, and the driller manages weight on bit by watching that differential. Exceed the motor's rating and the rotor stalls, which damages the stator and can destroy the power section in minutes.

Elastomer condition sets the life. Stators swell in oil-based mud, degrade at high temperature and are damaged by stalling and by solids. Motors returned with chunked stators usually tell a story about temperature, fluid or operating practice, and reading that story is how run life gets better.

By the end of this training, participants will be able to:

• Describe positive displacement motor construction and operation.
• Explain power section geometry and lobe configuration effects.
• Interpret motor performance curves and operating envelopes.
• Match motors to bits, formations and drilling objectives.
• Explain bent housing design and steerable motor operation.
• Describe turbodrill construction, performance and applications.
• Select motors for given well conditions.
• Apply operating practice and manage differential pressure.
• Assess elastomer, temperature and fluid compatibility limits.
• Diagnose motor failures and evaluate motor performance.

The course is instructor-led. Motor construction is covered with cutaway drawings and component photographs, including failed power sections and bearing assemblies. Performance is taught through curves and real run data, with participants selecting motors and predicting performance for given wells. Participants are encouraged to bring their own motor run records for discussion.

Organisations sending participants to this training will:

• Select motors correctly for the application and formation.
• Improve motor run life and reduce failure trips.
• Improve drilling performance through better motor and bit matching.
• Reduce stator damage caused by operating practice.
• Strengthen technical oversight of motor service providers.

Participants will:

• Understand how downhole motors work.
• Be able to read and use motor performance curves.
• Be able to select and match motors to bits and formations.
• Understand differential pressure management and operating limits.
• Be able to diagnose motor failures from returned equipment and run data.

• Drilling engineers
• Directional drilling staff
• Rig site supervisors
• Drillers and senior rig crew
• Service company motor engineers
• Drilling performance engineers

Upon successful completion of this training course, delegates will be awarded an official Certificate of Completion issued by the Petroleum Engineers Association (PEA), an ISO 9001:2015 certified training organization. The certificate carries 10 Credits and formally records the total learning hours completed.

Each certificate is signed by the Course Facilitator and the CEO of the Petroleum Engineers Association, and serves as verifiable proof of professional training that delegates can present to employers and professional bodies worldwide.