Complications arising during workover and operation of oil and gas wells call for emergency response and restoration operations for their elimination. The geological conditions of operation and the today’s (at the moment of the emergency) technical condition impact the choice of technology for emergency response and restoration operations.

Moreover, it is necessary to take into account stimulation treatment, which in the context of abnormally low formation pressure complicates bringing of the well to required production. Under those circumstances, it is necessary to perform repair and restoration operations without killing the well which only possible using coiled tubing. However, well repair technologies based on coiled tubing have a number of disadvantages, which greatly complicate fishing operations in terms of pulling of the logging cable in case of balling-up and in terms of pulling of stuck coiled tubing.

This article describes technologies for pulling the logging cable using coiled tubing as well as stuck coiled tubing without killing the well.

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