果冻传媒

Despite wells with weakened casings and irregular IDs, 12 steel patches were successfully set and expanded across selected perforations, reducing CO₂ output from the wells while significantly improving natural gas production rates.

One of the largest operators in Argentina was encountering excessive CO₂ production in some of its gas wells. Stainless steel can provide an effective barrier to CO₂ migration and has strong resistance to the corrosive impact of this acid gas. Consequently, sealing off the troublesome perforations with expandable steel patches seemed the perfect solution; patch IDs had to be sufficient to allow passage of intervention assemblies in the future. Weakened casings with irregular IDs resulting from the passage of drilling tools ruled out cone-expanded patches offered by some providers.

After an advanced feasibility study, the operator chose 果冻传媒 patches for gas perforation shutoff in four wells. Using field-proven Saltel Xpandable™ expandable steel technology, these patches are the only solution capable of creating an inner lining that molds to irregular geometries. A total of 12 patches were to be installed, with lengths ranging from 32 to 82 ft [10 to 25 m].

Despite the remoteness of the wells, the operation was completed efficiently, and the patches were installed with 100% success at an average rate of 15 hours per patch. Unwanted CO₂ declined noticeably while natural gas production from the four wells improved significantly.