CHECK VALVE ASSEMBLY FOR WELL STIMULATION OPERATIONS

A CHECK VALVE ASSEMBLY (100) FOR WELL STIMULATION OPERATIONS. THE CHECK VALVE ASSEMBLY INCLUDES A VALVE BODY (102) HAVING AN AXIALLY EXTENDING PASSAGEWAY (104) INCLUDING AN INLET (106) AND A VALVE BODY SEAT (108). THE VALVE BODY HAS A DISCHARGE PORT EXTENDING LATERALLY FROM THE PASSAGEWAY. A VALVE C...

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1. Verfasser:	VEIT,JAN
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROLLING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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Zusammenfassung:	A CHECK VALVE ASSEMBLY (100) FOR WELL STIMULATION OPERATIONS. THE CHECK VALVE ASSEMBLY INCLUDES A VALVE BODY (102) HAVING AN AXIALLY EXTENDING PASSAGEWAY (104) INCLUDING AN INLET (106) AND A VALVE BODY SEAT (108). THE VALVE BODY HAS A DISCHARGE PORT EXTENDING LATERALLY FROM THE PASSAGEWAY. A VALVE CAP (116) SLIDABLY ENGAGES WITH THE VALVE BODY AND HAS AN OPENING (120) WITH A VALVE CAP SEAT (122). A PISTON (126) IS DISPOSED WITHIN THE PASSAGEWAY. IN A CLOSED POSITION, A FIRST SEALING SURFACE (128) OF THE PISTON ENGAGES THE VALVE BODY SEAT TO PREVENT FLUID COMMUNICATION BETWEEN THE INLET AND THE DISCHARGE PORT. IN AN OPEN POSITION, A SECOND SEALING SURFACE (130) OF THE PISTON ENGAGES THE VALVE CAP SEAT ALLOWING FLUID COMMUNICATION BETWEEN THE INLET AND THE DISCHARGE PORT. A SPRING (132) DISPOSED WITHIN THE PASSAGEWAY BETWEEN THE PISTON AND THE VALVE CAP BIASES THE PISTON TOWARD THE CLOSED POSITION. THE MOST ILLUSTRATIVE DRAWING IS