Ultra-High Expansion M-Bubble Plug

 

 UHX technology offers operators market leading downhole expansion rates of up to 300%, with the strength and durability required for high-pressure sealing.

PROJECT

 

The UHX M-Bubble Plug was successfully deployed for a major operating company in a water shut off application, in a free-flowing, oil producing well in Kazakhstan.
 
The project was the first in a multi-well plugging campaign, planned to include at least eight onshore wells. Following the success of the first deployment, the operator has placed further orders with DTI for additional UHX Plugs.
 
20/03/23 ETA: The campaign is continuing and the UHX plug has now been successfully deployed in three wells.

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RESULTS

The compact, 2.125” outer diameter (OD) M-Bubble Plug was successfully deployed on slickline through narrow tubing with a 2.2” inner diameter. It then set a permanent plug in a 5.5” liner, with a 4.95” inner diameter. This represents a market leading expansion rate of 245%.

An industry standard electric setting tool was deployed with DTI’s Hydromechanical Setting Assembly (HMSA) to provide the required stroke and force for the operation. Upon reaching the correct depth, the HMSA activated the M-Bubble’s ultra-high expansion slips. Pressurised fluid was then injected into the elastomer encased metal element, causing the element to unfold and contact the liner, creating a stable, high-pressure seal, with a differential pressure rating of 3,500 psi. Once the plug was set, the HMSA automatically released the plug and the tool string was pulled out of the well to prepare for the next plugging operation.

FEATURES AND BENEFITS

The core expandable technology uses additive manufacturing techniques to impart lightweight strength and durability. It is also suited to a range of packers, patches and straddles, to service a wide variety of onshore and offshore applications across the lifecycle of the well, including completion, recompletion, development, production optimisation and P&A.

There are also valuable applications for this technology in the repurposing of oil and gas wells for the carbon sequestration sector.

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