Kill Well for Workover (Multi-Lateral)

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Kill Well for Workover (Multi-Lateral)

27 May 2020

Dear professionals,

Does anyone have experience in temporarily killing the well of the highly-deviated gas-producing branch hole for the workover purpose?

We are planning the multi-lateral well to be completed with TAML level-2 and the branch hole has nearly 500m (1600ft) of the highly-deviated (70-80 degree) gas-bearing reservoir section (EMW 0.6~1.0 sg). For the future workover, we need to kill the hole temporarily, through the SSD (Sliding side door) installed near the junction at 4500m (15000ft) on the 3-1/2" single tubing string.

Our major concern with this way is that it would take a lot of time (or not possible) to kill the hole due to some relatively permeable area in the reservoir section which results in the lower gas replacement efficiency.

It’s highly appreciated if you could share your experiences and comments.

Thanks,
Gota