Aug 28 (Reuters) - U.S. pipeline operator ONEOK ( OKE )

said on Wednesday that it struck two deals worth $5.9 billion

with infrastructure investor GIP to boost its presence in the

Permian Basin as well as mid-continent, North Texas and

Louisiana regions.

ONEOK ( OKE ) said it would buy GIP's 43% stake in EnLink Midstream ( ENLC )

for $14.90 per unit and GIP's full interest in EnLink's

managing member for a total of about $3.3 billion in cash.

The price per unit is a 12.8% premium to EnLink's closing

market price on Aug. 27.

ONEOK ( OKE ) said it would also buy from GIP its equity interests

in Medallion Midstream, a crude gathering and transportation

system in the Permian's Midland Basin, for $2.6 billion in cash.

ONEOK ( OKE ) said it expects the deals to immediately add to its

earnings and free cash flow, bolstering its ability to execute

its planned $2 billion share repurchase program.

It expects synergies between $250 million and $450 million

over the next three years as a result of these acquisitions, it

said in a statement.

ONEOK ( OKE ) said it has secured financing commitments worth up to

$6 billion from JPMorgan Chase and Goldman Sachs to fund the

deals.