Matches 1 - 25 out of 25


Match Document Document Title
7909095 Valve device and associated methods of selectively communicating between an interior and an exterior of a tubular string  
A valve device and associated methods of selectively communicating between an interior and an exterior of a tubular string. A valve device includes an openable and closable flowpath for...
7798217 Apparatus for separating a mixture of liquids of differing specific gravities in a wellbore  
An apparatus for separating a mixture of liquids of differing specific gravities in a wellbore is disclosed along with a method of installation and operation thereof. This device separates water...
6298916 Method and apparatus for controlling fluid flow in conduits  
A completion string for use in a wellbore includes a main conduit, such as a production tubing, and one or more alternate path conduits, such as shunt tubes, that extend generally in parallel with...
5404956 Hydraulic setting tool and method of use  
A hydraulic setting tool for setting a packer with a sliding valve therein in an operating position in a well bore. The setting tool comprises an outer housing portion slidably disposed with...
4903775 Well surging method and apparatus with mechanical actuating backup  
A well surging system having pressure actuated ball valves and a mechanical actuating backup for the upper of said ball valves. The apparatus comprises a valve assembly portion containing the...
4842074 Gas storage well safety system and method  
A well safety system with two surface controlled subsurface safety valves. The invention allows various alternatives for controlling injection into and production from a gas storage well. For...
3727691 METHOD AND APPARATUS FOR TREATING SUBTERRANEAN FORMATIONS  
Separate fluids are passed through separate conduits in a wellbore and commingled at a subsurface location to form a single stream which is then passed through a mechanical mixing device. The...
3509941 CONFLUENT PRODUCTION APPARATUS  
3353609 Drill stem testing apparatus  
3351135 Drill stem testing apparatus  
3314480 Bridge plug with compound by-pass valve  
3302721 Dual zone completion system with special valve  
3268004 Apparatus for improving the permeability of subterranean formations  
3223159 Liner cementing method  
3211230 Multiple zone selective cross-over apparatus  
3208527 Method and apparatus for controlling flow of well fluids  
3182726 Multiple zone selective flow control apparatus  
3066738 Well packer and setting device therefor  
3040812 Zone selector for wells  
3038541 Well packer  
3032111 Subsurface safety valve  
2970648 Crossover apparatus for oil and gas wells  
2943684 Selective hydrofracting apparatus  
2850100 By-pass and testing tool  
2836246 Method of removing liquid from well bore hole  

Matches 1 - 25 out of 25