دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a variation of squeeze cementing for wells with two producing zones in which (1) the upper fluid sand is perforated;(2) tubing is run with a packer, and the packer is set between the two perforated intervals;(3) water is circulated between the two zones to remove as much mud as possible from the channel;(4) cement is pumped through the channel and circulated;(5) the packer is released and picked up above the upper perforation, a low squeeze pressure is applied, and the excess cement is circulated out. The process is applicable where there is communication behind the pipe between the two producing zones because of channelling of the primary cement or where there is essentially no cement in the annulus.

a secondary or repair cement method using upper and lower perforations and a packer set between. Circulation is established with water and mud remover chemicals to clean the channel. Cement is circulated with a set volume pumped, then the packer is releas