Carpatsky Petroleum Inc., Calgary, is bringing on gas and condensate production in Rudovsko-Chervonozavodskoye field in Ukraine's Dnieper-Donets basin.
The field, known as R-Ch, is Ukraine's largest partly developed gas condensate field, having produced 42 bcf of gas and 1.5 million bbl of condensate since discovery in 1987.
Carpatsky signed a joint activity agreement in 1995 with Poltavanaftagaz (PNG), a subsidiary of the joint stock company OAO Ukrnafta, to develop the field.
The development plan calls for the drilling of about six wells/year during the term of the five year term of the exploitation license by the joint venture company, UkrCarpatoil. The license permits a further 20 year extension.
The companies recently reported progress on the first six wells. R-Ch field, formerly known by its Russian name, Krasnozavodskoye field, is in the Poltava District of eastern Ukraine about 250 km east of Kiev. It consists of 10 independent sandstone reservoirs of Lower and Upper Carboniferous age at 13,776-18,696 ft.
PNG plans plan to perforate the T-3 sandstone reservoir at Well 102, TD 18,998 ft, when guns and charges arrive from the U.S. in October. Logs indicate T-3 is well developed, and the most prospective section, containing 124.6 ft of pay, is to be opened. T-3, the field's deepest gas reservoir, is not fully explored and thus far has no production history.
The adjacent 2R well flowed 38.8 MMcfd of dry gas from a 10 ft section but was completed in a shallower sand due to hole conditions.
PNG set 51/2 in. slotted production casing through the B-22H reservoir in Well 109, TD 16,876 ft. It will be tied back from 8,200 ft to surface after delivery of 65/8 in. casing, and flow tests will follow.
Well 104, at TD 19,080 ft the field's deepest, was awaiting arrival of 5 in. casing from Romania.
Well 111 was drilling near its planned TD of 17,000 ft, and Well 100K was drilling toward planned TD of 18,044 ft below 7 in. intermediate casing set at 12,497 ft. It is to be completed in first quarter 1999.
R-Ch field gas contains no hydrogen sulfide and has only small percentages of carbon dioxide and nitrogen.
Marketing strategy is to sell gas to creditworthy customers, initially industrial buyers in Poltava, and eventually elsewhere in Ukraine.
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