Volga Gas said that in May 2017 its average gas processing capacity was reduced, as expected, in order to permit full industrial testing of the new gas sweetening process.
Group average production in May 2017 was 5420 barrels of oil equivalent per day, or about 28% lower than April 2017.
"This is expected to continue through June 2017, but thereafter plant capacity is expected to be fully available enabling Group production to return progressively to over 8,000 boe per day," it said.
"The implementation of the new Redox processing is expected to reduce processing costs materially and since Redox is regenerative, will substantially eliminate the requirement to dispose of spent chemicals.
"At the Uzen oil field, with road conditions restored after a wet period in April, oil trucking and production was restored to normal operating levels."
At 8:09am: (LON:VGAS) Volga Gas PLC share price was 0p at 61p