Recovering Damaged Straddle Packer

Our ability to quickly provide e-line solutions was put to the test when a simple replacement of straddle packers turned complicated. Combining the Well Stroker and Well Cleaner, we efficiently removed a damaged straddle through the DHSV and recovered all the elements left downhole by the damaged straddle.

The straddle packers were set across an area of parted tubing but after three months they had begun to leak. As part of the original, planned operation, a Well Stroker was applied to pull the first straddle packer which turned out to be missing a metal spring. When trying to pull the next straddle, it got stuck several places in the well. It was finally recovered but the Well Stroker had to be used through the downhole safety valve and side pocket mandrel. At surface, it was concluded that the lower section of the straddle was missing the entire rubber element.

In order to quickly amend the situation, a Well Cleaner PST was rushed to the rig for recovery of the lost elements at 17,303 ft (5,274 m) MD. The Well Cleaner PST made several runs where it recovered the rubber elements and the steel spring from the upper straddle packer along with several, unidentified items. These unidentified items were found to be the “arms” that keep the rubber element of the lower HEX straddle together.

The Well Cleaner PST also recovered several broken elements from the well, implying that the HEX straddle had gotten damaged and the loose parts had been produced through the higher placed straddles. With all the elements safely recovered and accounted for at surface the client was assured that the well was clean of debris down to the top straddle.

Welltec’s solution delivered vital information that allowed the client to plan the next step of the workover and return the well to production.

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