Representative project experience

Complex wells. Practical execution. Documented follow-through.

These anonymized profiles demonstrate the type of technical and field experience available through the Grindstone team. Client and well identifiers are intentionally omitted.

Project portfolio

Selected field projects.

A closer look at the field environments, equipment, and operating experience behind Grindstone’s engineering and project-delivery capabilities.

Service rig and field equipment during a seven-well plugging and abandonment operation

Illuminated service rig during a Cardium completion project in Central Alberta

Plugging & abandonment

Seven-well P&A operation

Western Canada

Field operations supporting a coordinated seven-well plugging and abandonment program. The work reflects the planning, equipment mobilization, field coordination, and disciplined execution required to advance a multi-well closure scope.

Project details are intentionally limited to protect client and site confidentiality.

Case 1 · Surface casing vent flow

High-rate vent-flow investigation and repair

Project challenge: A difficult well required equipment removal, diagnostic work, repeated cement remediation, and extended verification before closure readiness could be established.

Work performed

Removed interfering equipment and prepared the wellbore

Set a retainer and coordinated diagnostic logging

Completed thirteen cement squeezes

Finished with fresh water and long-term monitoring

Documented outcome

Recorded end-of-job vent flow was zero. Continued monitoring was included to preserve evidence of performance.

Case 2 · Prior-abandonment remediation

Locating and correcting earlier abandonment work

Project challenge: Existing rods, tubing, and a previous abandonment device prevented the new program from reaching and isolating the required intervals.

Work performed

Removed rods and tubing

Drilled out the previous abandonment device

Squeezed and abandoned multiple perforated intervals

Completed post-work noise-temperature and radial-bond logging

Documented outcome

The work restored access to the required intervals and produced updated verification evidence for closeout planning.

Case 3 · Difficult-well program

Repeated diagnostics and cement isolation

Project challenge: Multiple prior devices and a lost-circulation interval created a complex sequence requiring field decisions, repeated isolation work, and careful documentation.

Work performed

Drilled out three prior devices

Addressed the lost-circulation interval

Completed eight retainer squeezes

Placed five cement-capped bridge plugs

Documented outcome

Verification advanced the well toward final cut-and-cap readiness under the approved technical program.

Case 4 · Monitoring and verification

Vent-flow control and closure-readiness testing

Project challenge: The project required more than barrier placement; the team needed to demonstrate the resulting condition through circulation, pressure monitoring, and repeat testing.

Work performed

Completed cement remediation

Circulated to surface

Monitored pressure response

Performed repeat bubble testing and file review

Documented outcome

The combined field evidence supported confirmation of downhole abandonment readiness.

Qualification support

Additional records can be discussed during qualification.

References, supporting project records, safety documentation, insurance information, and equipment schedules may be available as appropriate. Confidential materials may require a mutual nondisclosure agreement.

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