Well RXY is located in Cairn’s Ravva offshore field in the Krishna-Godavari Basin in India. One goal for the field was significant crude production by means of a secondary reservoir section. This paper presents a case study concerning rigless remediation of microchannels in the cement packer (placed in the annulus of production tubing and casing to isolate the producing zone) and discusses laboratory development of a customized epoxy-resin system, simulations to estimate channel size, 3D displacement modeling, drillout after placement, and evaluation post-placement.
Introduction
The well is an injector, drilled in 1998, intersecting several oil sands. The well was completed selectively across the sands with permanent packers for zonal isolation.
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