Lifecycle Production Optimisation
Practical nodal analysis, flow-model tuning, and systematic debottlenecking to squeeze extra barrels from start-up through late-life decline.
Higher Production. Safer Wells.
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Services
Full-Scope Well Integrity
Envelope management, barrier verification, and ironclad compliance support that keep wells safe and regulators satisfied at every phase.
Decommissioning &
P&A Support
Well-kill modelling and barrier audits that de-risk P&A campaigns and lock in predictable final costs.
MCGx has commissioned ~5% of Australia’s gas production
~$350M
in Client Spend Saved
1.1BCF/d
in Gas Wells Commissioned
~$150M
in Accelerated Gas Capture
$8M+
in Projects Completed
Industry Experience
About Us
Well-focused precision, from first gas to final P&A.
Proudly Australian, MCGx delivers the technical precision that separates industry leaders from the pack—unlocking higher asset output today while ensuring regulator-ready decommissioning tomorrow.
Led and founded by Dusan Matejic, a production engineer with deep experience guiding tier-one assets, we combine battle-tested field expertise with state-of-the-art analytics to maximise production, guarantee barrier integrity, and eliminate costly P&A surprises.
Flat structure, no vendor bias, results you can measure.
Proven Impact, Measurable Results
ICV Innovation
Inflow Control Valve Innovation
Result
Saved the operator US$90 M with zero downtime.
Problem
Falling reservoir pressure and an energised hydraulic control line would soon drive the already-compromised ICV seals beyond their 10k-psi limit, setting the stage for a US$90 M workover.
MCGx Insight
The check valve inside the subsea control module could be repurposed. By venting the control line fluid through the DCV, the already-occurring loss of hydraulic fluid at the ICV seals created a control line vacuum at the check valve. This induced a “straw” effect, which prevented further reservoir gas ingress and loss of hydraulic fluid.
Proof
The control line was re-energised after one week, four weeks, and three months; each cycle confirmed zero gas ingress or hydraulic fluid loss. The solution has held for two years, keeping seals within limits and eliminating the planned intervention.
SCSSV Testing Optimisation
SCSSV Testing Optimisation
Result
Operator saves US$15 M annually, in perpetuity, while maintaining regulatory compliance and system integrity. High-risk equalisation cycles are halved, and multi-well downtime is eliminated.
Problem
Yearly oil-well SCSSV leak-off tests induced diesel or gas lift equalisation. These rapid pressure swings pushed ageing jumpers, XTs, and flowlines toward their integrity limits, which sidelined high-rate wells for up to five weeks.
MCGx Insight
A rigorous study combined industry data, well histories, and failure modelling. Quantitative fault trees proved the true probability of loss of containment remained ALARP at a 24-month test interval without eroding safety margins.
Proof
The statistical case, complete with confidence bands and sensitivity analyses, was submitted to the regulatory body and accepted in full.
Production Excellence
Production Excellence
Result
1.1 BCF/d of new capacity—about 5 % of Australia’s gas production—has been delivered through MCGx-led well commissioning.
Context / Challenge
Every start-up campaign faces critical risks—hydrate formation, lower-completion damage, inadvertent ICV closure, excessive solids, etc.—any one of which can delay first gas or throttle plateau rates.
MCGx Differentiators
- System-constraints mapping pinpoints bottlenecks before flow begins.
- Six-month planning window locks in procedures and contingency matrices.
- 24⁄7 live monitoring catches deviations early, keeping ramp-up smooth and safe.
- Seamless and comprehensive project close-out.
Impact
Standardised commissioning acceptance criteria now adopted by multiple tier-one operators and credited with US$150 M in accelerated gas revenue over field life.
xStack™ – One-click BOP Brain
Built in-house by MCGx well-control experts, xStack™ replaces spreadsheet shortcuts for NIST real-gas physics, instantly modelling accumulator behaviour during Autoshear, EDS, and Dead-Man sequences. In seconds it delivers 3-D pressure maps, compliance flags, and precise bottle counts—equipping you with audit-ready proof that your BOP stack will close when it matters most.
One call, Complete well solutions
Book your 15-minute call with MCGx now.
Phone
Address
Level 12, 197 St Georges Terrace, Perth WA 6000