Nov 13 (Reuters) - Oil giant ExxonMobil ( XOM ) said on

Wednesday it had reached 500 million barrels of oil produced

from Guyana's offshore Stabroek block since beginning output in

2019.

The Exxon-led consortium, which includes Hess and

CNOOC Ltd, is responsible for all production in the

South American nation.

They aim to lift production capacity to more than 1.3

million barrels of oil per day by the end of 2027 once six

approved offshore projects are online.

The first three - Liza Phase 1, Liza Phase 2 and Payara -

are pumping an average of more than 650,000 barrels per day,

Exxon said in a statement.

The Stabroek block is a point of contention in Chevron's ( CVX )

$53 billion deal for Hess. Both Exxon and CNOOC are

challenging the deal, claiming a contractual first right to buy

Hess's stake in the field, a matter to be decided by a

three-person arbitration panel in May next year.

Last year, the consortium's agreement with Guyana generated

$6.33 billion for the partners, government data showed, with

Exxon netting $2.9 billion, Hess earning $1.88 billion and CNOOC

taking home $1.52 billion from Stabroek.