Use the active leak
The same connected pathway carrying gas provides access for water-like treatment fluids.
Case study 056 · DeWitt County, Texas
Eagle Ford
abandonment.
BioSqueeze was deployed on a previously plugged well that continued leaking gas to surface—a difficult abandonment problem where the original barrier had not isolated the connected pathway.
ChallengeGas to surface
Well conditionPreviously plugged
LocationDeWitt County, TX
ObjectiveRestore containment
The challenge
A plugged well was still leaking.
Gas reaching surface after plugging indicates that one or more connected pathways remain open around or through the existing abandonment barriers. Reworking these wells can become expensive when the pathway is small, remote from the wellbore or distributed through damaged cement.
BioSqueeze was selected to access the active pathway with low-viscosity treatment fluids and form a mineral seal in place without relying on bulk cement placement alone.
The treatment
Follow the pathway instead of guessing its geometry.
Self-divert
Treatment preferentially enters the most conductive channel and moves outward as permeability falls.
Form mineral in place
Calcium carbonate precipitates within the leakage network rather than bridging at its entrance.
Restore the barrier
The objective is a permanent gas-tight mineral seal that complements the existing plug system.
The result
Abandonment integrity depends on sealing the pathway.
An existing plug can be present while a separate connected leakage pathway remains open.
This case illustrates a recurring asset-retirement problem: a barrier may remain incomplete even after conventional plugging material has been placed.
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