Xclude

1 Review
2 Followers
0 Deploys

Reservoir Barrier Technology

Page last modified
February 22 2024

The fundamental objective of well abandonment is to isolate zones of flow potential, preventing fluids escaping to surface. Current practice requires a rig to place multiple pressure-retaining barriers in the wellbore, which at an average cost of £5M, leads to this stage being the single biggest decommissioning cost.

Xclude is a rigless, safe and cost-effective solution that creates a barrier in the formation by blocking the pore throats of the rock, removing the potential for flow. Xclude takes scale formation – a problem the North Sea has faced for over forty years – and uses it to form a permanent mineral barrier in the rock. Xclude’s specially formulated, environmentally friendly fluids are easily mixed and deployed using standard pumping equipment.

The solution can be pumped to various depths and is time-controlled to ensure that the scale forms where it is needed. By using this new approach, operators will significantly reduce the well management risk and overall P&A cost.

Pros & Limitations
1
Rigless – can be bullheaded from surface
1
Cost saving especially for difficult to access and Subsea wells
1
Significantly reduces well management risk
1
Easily mixed and deployed using standard pumping equipment
1
Uses safe and environmentally acceptable chemicals
1
Uses familiar and well understood mineral to create reservoir barrier
1
Does not require good annular cement to create barrier
0
Not suitable for zones with large fractures
Specification
Specification Title Specification Description
Areas of Application
Decommissioning of onshore and offshore, oil or gas producing and water injection wells, platform or subsea.
Capabilities
Reduces formation permeability by creating scale in pore throats. Creates barrier deep in formation.
Certifications / licences
CEFAS registered with good environmental profile.
Compliance
CEFAS registered, REACH compliant.
Cost
Significant cost reduction potential especially for subsea and “difficult to get on” wells.
Deployment
Easily deployed using simple standard pumping spreads.
Impact
Alternative approach to well decommissioning, reducing costs and risks.
Material
Barrier created from well understood material, known to industry.
Patents
Patent pending.

Reviews (1)

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Technology Readiness Level

[7/9]

Development Technology demonstration Mature / Proven
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Aubin Group is globally recognised as a leading developer and supplier of chemical solutions to the oil and gas industry with manufacturing, stocking and office locations in the UK and various regions in the Middle East. The company commits resources to developing effective and reliable products and delivering these promptly to clients around the world. Using chemistry in a number of ways, Aubin develops innovative and proprietary materials technology to solve industry problems.