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08:31 Sep 16, 2007
English to Russian translations [PRO] Tech/Engineering - Petroleum Eng/Sci / drilling
English term or phrase:top job
The most relevant problems found in this formation were:
Severe Circulation Losses along the whole interval
105 ft, 115 ft, 120 ft, 123 ft, 125 ft, 210 ft: Circulation Losses (2000 bls) Nut plug - Rice hulls material were used to try to control.
80 ft: Casing did not pass below this depth because of a bridge caused by conglomerates, so it was necessary to use a hole opener.
As no cement returned to surface, a top job was necessary for the 20” casing.
After drilled to 1929 ft it was decided to run 16 ft casing but got stuck at 380 ft. Then the hole was enlarged to 18-3/4 ft to 1929 ft. A new attempt to run the 16" casing was again unsuccessful because it did not pass 380 ft.