English to Russian Tech/Engineering Geology well-completion report

From 59 m to 1212 m samples were collected at 20’ (6.1 m) intervals. Sample quality through the cap rock was not especially good because of up-the-hole caving and combination of slow drilling and impurities in the barite. Below 1212 m, sample quality was poor as a result of iron shavings coming from abrasion of the 7” liner and 9 5/8” casing.