78036201
Nov 21, 2000
WELL CONTROL APPARATUS FOR DOWN HOLE OIL, GAS OR INJECTION WELLS, NAMELY; DOWN HOLE COMPUTERIZED ELECTRICAL, AND HYDRAULIC CONTROLLERS, ELECTROMECHANICAL, ELECTRO HYDRAULIC AND OPTO-HYDRAULIC CONTROL FOR USE IN CONTROLLING THE FLUID FLOW IN AN OIL, GAS, OR INJECTION WELL; PRODUCTION WELL PRESSURE, TEMPERATURE, FLOW, AND CHEMICAL SENSORS; FIXED DOWN HOLE FORMATION EVALUATION SENSORS; ELECTRICAL INFLATION AND DEFLATION CONTROLLERS, NAMELY; VALVES TO OPERATE INFLATABLE PACKERS; REMOTE CONTROLLED AUTOMATIC METAL FLUID AND GAS FLOW CONTROL VALVES; REMOTE CONTROLLED VARIABLE AUTOMATIC CHOKE AND SHUT OFF VALVES; AUTOMATIC SAFETY VALVES; COMPUTER MONITORS FOR MEASURING VALVES PRESSURE; ELECTRICAL AND HYDRAULIC CONTROLLERS FOR FLUID FLOW CONTROL OF DOWN HOLE OIL, GAS AND INJECTION WELLS; AND ELECTRICAL AND HYDRAULIC POWER SUPPLIERS FOR FLUID FLOW CONTROL OF DOWN HOLE OIL, GAS AND INJECTION WELLS
Electrical and Scientific Apparatus