July 12 (Reuters) - Royal Dutch Shell Plc RDSa.L :
* Through Shell Overseas Holdings reached agreement with Canada Pension Plan Investment Board unit to sell shares in Shell E&P Ireland
* Deal to sell shares in Shell E&P Ireland Limited, that holds 45% interest in Corrib Gas Venture for up to $1.23 billion
* Transaction includes initial consideration of $947m and additional payments of up to $285m between 2018-2025, subject to gas price and production
* Deal , which represents Shell's exit from upstream business in Ireland, is expected to complete in Q2 2018
* CPPIB will be the new Corrib Gas JV partner and Vermilion will become the new operator of the Corrib Gas venture
* Deal to result in an impairment charge of around US$350m, which will be taken in Q2, 2017
* At completion, a negative non-cash cumulative currency translation difference of around US$400m will be released
* Shell will retain presence in Ireland through Aviation JV, Shell and Topaz Aviation Ireland Limited based near Dublin airport Further company coverage: RDSa.L