Method of cementing a casing in a borehole

Details Method of cementing a casing in a borehole Method of cementing a casing in a borehole

1986-07-15

1987-06-09

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

166285, E21B 3314, E21B 3316

Patent

active

046713573

ABSTRACT:
A method for cementing a casing into a borehole. The borehole is drilled to the desired depth in the usual manner. Before removing the drill string and without substantially interrupting the flow of fluids in the borehole, the mud therein is displaced with a fluid substantially free of undissolved solids from the portion of the borehole into which it is desired to cement the casing. When the solids-free fluid is in place, the drill string is removed, the casing suspended in the borehole, and a cement slurry placed in the annulus where it is allowed to set. Preferably, the solids-free fluid is more viscous and dense than the mud, and less viscous and dense than the cement slurry. Optionally, mutually compatible spacer fluids or cementing plugs are used to separate the mud from the solids-free fluid and the solids-free fluid from the cement slurry.

REFERENCES:
patent: 2776112 (1957-01-01), Ilfrey et al.
patent: 3411580 (1968-11-01), McKinney et al.
patent: 3653441 (1972-04-01), Tuttle
patent: 3749173 (1973-07-01), Hill et al.
patent: 3863718 (1975-02-01), Bruist
patent: 3878895 (1975-04-01), Wieland et al.
patent: 3884302 (1975-05-01), Messenger
patent: 4190110 (1980-02-01), Beirute

Affiliated with

Also associated with

Rating

Method of cementing a casing in a borehole does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of cementing a casing in a borehole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of cementing a casing in a borehole will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1823310