MOSCOW, Dec 19 (Reuters) - Black Sea CPC Blend oil

exports via the Caspian Pipeline Consortium (CPC) pipeline

system are set to stay at 1.43 million barrels per day (bpd) in

January, unchanged from the December plan, two sources familiar

with the matter told Reuters.

Meanwhile, CPC Blend oil loadings in December may be below

the planned 1.43 million bpd volume due to lower than planned

output from Kazakhstan's biggest oil field Tengiz, operated by

U.S. major Chevron ( CVX ), the sources said.

The CPC consortium doesn't comment on monthly loadings.

Output from Tengiz remained 20% below its scheduled plan on

average in December, helping Kazakhstan to comply with its OPEC+

output target, Reuters estimates based on Kazakh energy ministry

data and analysis service SAC TEK showed.