CG Engineering Ltd. is a Calgary-based oil and gas consultancy specializing in upstream well engineering and midstream subsurface infrastructure. With 19+ years of experience across Western Canada and beyond, we deliver practical, cost-effective solutions for drilling, completions, workovers, and abandonments—on both conventional oil and gas wells and complex midstream assets like disposal, injection, and gas storage wells.

We take pride in pairing engineering precision with real-world execution. Our team brings decades of in-field experience to every job, ensuring programs are designed to succeed in the field—not just on paper. Whether it’s a multi-well re-entry program, a deep disposal project, or a high-profile abandonment involving SCVF or GM mitigation, we’ve been there.

We support clients across a wide range of project types and sizes—from routine single-well operations to $15MM+ capital programs—delivering results that align with safety, regulatory compliance, and bottom-line performance.

Our core strengths include:

Drilling, Completions, Re-Entries & Workovers

Routine & Complex Abandonments (including SCVF/GM mitigation)

Injection, Disposal & Gas Storage Well Programs

Cavern Well Engineering & Midstream Subsurface Projects

Field Supervision & Execution Support

Engineering, Optimization & Programming

Regulatory Strategy, Applications & Compliance

Project Management & Procurement Support

We’re certified with ISNetworld, ComplyWorks, and SECOR, and committed to upholding the highest safety and ethical standards. Our clients trust us to work collaboratively, respond quickly, and deliver solutions that are grounded in both technical rigour and field practicality.

From shallow gas wells in Alberta to Canada's first salt cavern wells in Nova Scotia—we’ve done it.

If you’re looking for smart, nimble engineering support for your next drilling, completions, workover, or abandonment program—reach out. We’re ready to go to work.

CG Engineering Ltd.

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CG Engineering Ltd.

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