Treater separator meter assembly

Claim 1

A TREATER SEPARATOR METER ASSEMBLY FOR TREATING PETROLEUM WELL STREAM SEPERATING GAS, WATER AND OIL AND METERING THE WATER AND OIL PRODUCING COMPRISING A WELL STREAM TREATING VESSEL HAVING SIDE, A TOP AND BOTTOM WELLS, A HORIZONTAL PARTITION IN THE UPPER PORTION OF THE VESSEL SPACED FROM THE TOP WALL AND DEFINING A GAS SEPARATION CHAMBER, A VERTICAL WALL EXTENDING DOWNWARDLY FROM SAID PARTITION AND DEFINING WITH A MINOR PORTION OF THE VESSEL SIDE WALL A FLOW SPACE EXTENDING FROM SAID GAS SEPARATING CHAMBER TO ADJACENT THE BOTTOM WALL OF SAID SEPARATING CHAMBER TO ADJACENT THE BOTTOM WALL OF FIRST-NAMED PARTITION AND DEFINING WITH THE VERTICAL WALL AND THE MAJOR PORTION OF THE VESSEL SIDE WALL A HEATING ZONE, AND AN OIL OUTLET ZONE, SAID OIL OUTLET ZONE BEING ADJACENT TO AND BELOW THE GAS SEPARATION CHAMBER, CONDUCTION MEANS CONDUCTING THE WELL STREAM TO THE GAS SEPERATION CHAMBER WITH LIQUID THEREOF COLLECTING ON SAID FIRST-NAMED PARTITION AND FLOWING DOWNWARDLY IN THE FLOW SPACE, HEATING MEANS IN THE HEATING ZONE, MEANS INCLUDING A DISTRIBUTOR COMMUNICATING THE FLOW SPACE WITH THE HEATING ZONE BELOW THE HEATING MEANS FOR FLOW OF SAID WELL STREAM LIQUID TO THE HEATING ZONE AND DISTRIBUTION THEREIN TO BE HEATED THEREIN WITH FREE WATER COLLECTING IN THE LOWER PORTION OF THE TREATING VESSEL AND OIL RISING UPWARDLY IN THE HEATING ZONE TOWARD THE OIL OUTLET ZONE, AN OIL METERING APPARATUS AND A WATER METERING APPARATUS EACH HAVING A METERING VESSEL IN SAID TREATING VESSEL IN THE LOWER PORTION THEREOF, SAID METERING VESSELS BEING SPACED APART WITH EACH HAVING A CENTRAL PORTION WITH REDUCED VOLUME SECTIONS FORMING UPPER AND LOWER PORTIONS, SAID METERING VESSELS BEING DEFINED BY OUTER WALLS SPACED INWARDLY FROM ALL WALLS OF THE TREATING VESSEL WHEREBY SAID METERING VESSELS ARE SUBSTANTIALLY SURROUNDING BY LIQUIDS IN SAID TREATING VESSEL, A DUCT FOR EACH OF SAID METERING VESSELS COMMUNICATING THE TOP PORTIONS THEREOF WITH THE UPPER PORTION OF THE TREATING VESSEL FOR PRESSURE EQUALIZATION, AN OIL OVERFLOW LINE COMMUNICATING WITH THE OIL OUTLET ZONE TO MAINTAIN AN OIL LEVEL THEREIN, SAID OIL OVERFLOW LINE EXTENDING DOWNWARDLY AND COMMUNICATING WITH THE LOWER PORTION OF THE OIL METER VESSEL, A WATER SIPHON ASSEMBLY HAVING AN INLET IN THE LOWER PORTION OF THE TREATING VESSEL AND AN OUTLET DISPOSED TO MAINTAIN AN OIL-WATER INTERFACE IN THE UPPER PORTION OF THE HEATING ZONE, THE WATER SIPHON OUTLET DUCT COMMUNICATING WITH