Squeeze cement method using coiled tubing

Wells – Processes – Cementing – plugging or consolidating

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

166291, 166293, 166297, E21B 3113

Patent

active

046274960

ABSTRACT:
A squeeze cementing method wherein the well tubing does not have to be pulled from the well so no workover rig is needed; a smaller volume of squeeze cement is required; the pressures involved in the squeeze operation can be precisely controlled with no risk of fracturing the formation; and there is no need for any drilling operations to remove hardened cement remaining in the well casing. More specifically, the present invention provides a squeeze cement operation that is carried out with a coiled tubing. The wellbore is isolated adjacent the perforations by flowing a packing fluid having a density greater than the cement through the coiled tubing to fill the lower part of the wellbore. An incompressible loading fluid is then flowed onto the packing liquid and this is followed by pumping the squeeze cement down the coiled tubing. After the cement is placed, a contaminating liquid is flowed down the coiled tubing to mix with the cement left in the casing and prevent it from setting. The contaminated cement and packing liquids are then removed from the casing which is then reperforated and returned to production.

REFERENCES:
patent: 2842205 (1958-07-01), Allen et al.
patent: 4445575 (1984-05-01), Perkins
patent: 4531583 (1985-07-01), Revett

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Squeeze cement method using coiled tubing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Squeeze cement method using coiled tubing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Squeeze cement method using coiled tubing will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1380796

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.