E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/17
E21B 33/14 (2006.01) E21B 33/16 (2006.01) E21B 34/14 (2006.01)
Patent
CA 1186617
A B S T R A C T A cement staging apparatus for wells end including well casing, comprising an open ended hollow body having a number of spaced ports therethrough; a first hollow member slideably associated with said body and having a first ports closed position and a second ports open position; first pressure means associated with said first member for displacing said first member and opening said ports thereby; a second hollow member slide- ably associated with said body and having a first ports open position and a second ports closed position and including shifting pressure relieving means associated with said body; second pressure means associated with said second member for displacing said second member and closing said ports thereby; said second member spaced a distance from said first member said body, said first member and said first pressure means defining a canister having an open end for receipt of a supply of pressurized cement and adapted for distributing said cement through said ports; and said body, said first and said second pressure means and said second member defining a closed canister for preventing the distribution of an additional supply of cement whereby closing of said canister by said second pressure means causes said pressure relieving means to shift thereby and relieve said canister pressure.
419729
Dunsmuir George H.
Jani William
LandOfFree
Cement staging apparatus for wells does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cement staging apparatus for wells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cement staging apparatus for wells will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1336821