Apparatus for downhole injection and mixing of fluids into a cem

Wells – Pistons – fluid driven into well

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

166165, 166169, 1663331, E21B 2702

Patent

active

055335705

ABSTRACT:
An apparatus for downhole injection and mixing of fluids into a cement slurry. The apparatus includes embodiments which either carry a fluid to the proper injection point in a wellbore or maintain it at the proper injection point until activated. In a first embodiment, the apparatus is characterized as a cementing plug having a fluid holding chamber therein. When the plug is pumped downwardly in the wellbore, the fluid in the chamber is flowed out of the chamber and mixed with the cement slurry by a venturi effect. In a second embodiment, the apparatus is characterized by a casing portion having a fluid holding chamber therein. A solenoid valve controls communication of the chamber with the well annulus, and fluid flow through the well annulus causes the fluid in the chamber to be flowed outwardly by a venturi effect. The second embodiment includes a casing shoe disposed below the fluid holding chamber. A third embodiment is disclosed which is substantially the same as the second embodiment except that it utilizes a casing cementing valve rather than a casing shoe. Methods of utilizing the apparatus to cement a well casing and mix a fluid, such as an accelerant, with the cement slurry are also disclosed.

REFERENCES:
patent: 2642139 (1953-06-01), Bedford
patent: 2852080 (1958-09-01), Roach
patent: 2859827 (1958-11-01), Elkins et al.
patent: 3004604 (1961-10-01), Limbocker, Jr.
patent: 3020961 (1962-02-01), Orr
patent: 3104715 (1963-09-01), Robinson, Jr. et al.
patent: 3199596 (1965-08-01), Wood
patent: 3259192 (1966-07-01), Hyde
patent: 4361187 (1982-11-01), Luers
patent: 4421166 (1983-12-01), Cain
patent: 4499951 (1985-02-01), Vann
patent: 4771635 (1988-09-01), Trevillion
patent: 4786805 (1988-11-01), Priest
patent: 4809776 (1989-03-01), Bradley
patent: 4809778 (1989-03-01), Johnson
patent: 4846279 (1989-07-01), Bruce
patent: 5002127 (1991-03-01), Dalrymple et al.
Halliburton Services Sales & Service Catalog 43, pp. 2423-2451 (1985).

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

Apparatus for downhole injection and mixing of fluids into a cem does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for downhole injection and mixing of fluids into a cem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for downhole injection and mixing of fluids into a cem will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1861157

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