The liner lap is the critical point. Cement must reach the top of the liner and seal the overlap, or the liner top packer must do it, and the result must be pressure tested. A liner top that leaks is a direct path from the open hole into the previous casing annulus, and remediating it later is awkward and expensive.

Cementing a liner is harder than cementing casing. The annulus is narrow, the clearance between liner and hole is small, equivalent circulating density is higher, and the string is suspended inside the previous casing rather than landed at surface. Losses during the job are common, rotation while cementing is often the difference between success and failure, and the volumes involved leave little margin for error.

Running problems are the other risk. A liner that will not reach bottom, a hanger that sets prematurely, a running tool that will not release, or a liner that becomes stuck part way, each turns a routine operation into a fishing job inside a string that must then be repaired or sidetracked. This course covers the design and the operational practice that prevent them.

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

• Explain liner applications and the reasons for running liners.
• Design liner size, length, overlap and setting depth.
• Select liner hanger types and setting mechanisms for the application.
• Specify running tools and plan setting and release procedures.
• Select liner top packers and polished bore receptacles.
• Design cement slurries and volumes for liner cementing.
• Design displacement for narrow annuli, including rotation and reciprocation.
• Specify plug and displacement systems for liners.
• Plan liner top isolation, clean-out and pressure testing.
• Plan tie-back strings and diagnose common liner problems and failures.

The course is instructor-led. Liner systems are covered with cutaway drawings, tool specifications and running procedures, and participants plan complete liner running and cementing operations for given wells. Field cases include liner top failures, stuck liners and running tool problems, with their causes. Participants are encouraged to bring their own liner operations for discussion.

Organisations sending participants to this training will:

• Improve liner running and cementing success rates.
• Reduce liner top leaks and the remedial work they cause.
• Reduce stuck liner and running tool incidents.
• Improve technical oversight of liner service providers.
• Support well integrity with properly sealed and tested liner laps.

Participants will:

• Understand liner systems and hanger mechanisms.
• Be able to design a liner and its cement job.
• Be able to plan and supervise liner running operations.
• Be able to plan liner top isolation and testing.
• Be able to diagnose and respond to liner problems.

• Drilling and well engineers
• Completion engineers
• Rig site supervisors and company representatives
• Liner and cementing service company staff
• Well integrity engineers
• Graduate engineers in well engineering

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.