Apparatus for discharging liquids from wells

Claim 1

AN APPARATUS FOR REMOVING LIQUDI FROM A WELL THROUGH A TUBING SUSPENDED THEREIN, SAID TUBING HAVING AN INLET NEEAR THE BOTTOM OF SAID WELL AND AN OUTLET AT THE HEAD OF SAID TUBING, THE COMBINATION COMPRISING; A VENT IN SAID TUBING NEAR SAID OUTLET, A VALVE IN SAID TUBING OUTLET, A GAS-OPERATED VALVE MOTOR FOR CONTROLLING SAID VALVE IN SAID TUBING OUTLET, MEANS FOR SUPPLYING OPERATING IGAS TO SAID VALVE MOTOR IN RESPONSE TO THE PRESSURE DROP IN SAID TUBING AS A LIQUID COLUMN ACCUMULATES IN SIAID TUBIING WHILE GAS EXHAUSTS THROUGH SAID VENT, SAID MEANS INCLUDING A DIFFERENTIAL PRESSURE RESPONSIVE VALVE AND TWO PRESSURE LINES LEADING TO SAID DIFFERENTIAL PRESSURE RESPONSIVE VALVE, ONE LINE LEADING FROM THE INSIDE OF THE WELL TUBBING AND THE OTHER LEADING FROM THE WELL OUTSIDE AND TUBING, A BLOCK VALVE ARRANGED TO CONTROL THE SUPPLY OF OPERATING GAS FROM SAID MEANS TO SAID VALVE MOTOR, A TIMING DEVVICE IN OPERATIVE CONNECTION WITH SAID BLOCK VALVE, SAID TIMING DEVICE INCLUDING A HOUSING WITH A PARTITION THEREIN FORMING A PAIR OF CHAMBERS A FLUIDD CONDUIT BETWEEN SAID CHAMBERS, A THROTTLE VALVE IN SAID FLUID CONDUIT, MEANS TO ADMIT OPERATING GAS TO SAID TIMING DEVICE WHEREBY A FLUID IN ONE OF SAID CHAMBERS IS DISPLACED THROUGH SAID THROTTLE VALVE INTO THE OTHER OF SAID CHAMBERS, THE OTHER OF SAID CHAMBERS BEING AN EXPANSIBLE CHAMBER OPERATIVELY CONNECTED TO SAID BLOCK VALVE WHEREBY THE TRANSFER OF FLUID TO SAID OTHER CHAMBER CLOSES SAID BLOCK VALVE, AND MEANS TO EXHAUST OPERATING GAS FROM SAID VALVE MOTOR.

Claim 2

AN APPARATUS FOR REMOVING LIQUDI FROM A WELL THROUGH A TUBING SUSPENDED THEREIN, SAID TUBING HAVING AN INLET NEEAR THE BOTTOM OF SAID WELL AND AN OUTLET AT THE HEAD OF SAID TUBING, THE COMBINATION COMPRISING; A VENT IN SAID TUBING NEAR SAID OUTLET, A VALVE IN SAID TUBING OUTLET, A GAS-OPERATED VALVE MOTOR FOR CONTROLLING SAID VALVE IN SAID TUBING OUTLET, MEANS FOR SUPPLYING OPERATING IGAS TO SAID VALVE MOTOR IN RESPONSE TO THE PRESSURE DROP IN SAID TUBING AS A LIQUID COLUMN ACCUMULATES IN SIAID TUBIING WHILE GAS EXHAUSTS THROUGH SAID VENT, SAID MEANS INCLUDING A DIFFERENTIAL PRESSURE RESPONSIVE VALVE AND TWO PRESSURE LINES LEADING TO SAID DIFFERENTIAL PRESSURE RESPONSIVE VALVE, ONE LINE LEADING FROM THE INSIDE OF THE WELL TUBBING AND THE OTHER LEADING FROM THE WELL OUTSIDE AND TUBING, A BLOCK VALVE ARRANGED TO CONTROL THE SUPPLY OF OPERATING GAS FROM SAID MEANS TO SAID VALVE MOTOR, A TIMING DEVVICE IN OPERATIVE CONNECTION WITH SAID BLOCK VALVE, SAID TIMING DEVICE INCLUDING A HOUSING WITH A PARTITION THEREIN FORMING A PAIR OF CHAMBERS A FLUIDD CONDUIT BETWEEN SAID CHAMBERS, A THROTTLE VALVE IN SAID FLUID CONDUIT, MEANS TO ADMIT OPERATING GAS TO SAID TIMING DEVICE WHEREBY A FLUID IN ONE OF SAID CHAMBERS IS DISPLACED THROUGH SAID THROTTLE VALVE INTO THE OTHER OF SAID CHAMBERS, THE OTHER OF SAID CHAMBERS BEING AN EXPANSIBLE CHAMBER OPERATIVELY CONNECTED TO SAID BLOCK VALVE WHEREBY THE TRANSFER OF FLUID TO SAID OTHER CHAMBER CLOSES SAID BLOCK VALVE, AND MEANS TO EXHAUST OPERATING GAS FROM SAID VALVE MOTOR.