RECOVERY OF GAS FROM DRILLING FLUID RETURNS IN UNDERBALANCED DRILLING

摘要

The drilling fluid returns from underbalanced drilling are introduced into a separator and a separate gas stream is recovered. The gas stream is cleane d at the well site to remove entrained liquid and particulate solids, to produce gas suitable to be fed to a compressor. The cleaned gas is compressed to re-injection pressu re and recycled to the well.