SLIDING SLEEVE HAVING CONTRACTING, SEGMENTED BALL SEAT

SLIDING SLEEVE HAVING CONTRACTING, SEGMENTED BALL SEAT

A sliding sleeve (100) opens with a deployed ball (B). The sleeve has a seat (150) disposed in the housing (120), and the seat has segments (152) biased outward from one another with a C-ring or other biasing element (154). Initially, the seat has an expanded state in the sliding sleeve so that the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LARISEY, MICHAEL SHANE, WARD, DAVID, WILKIN, JAMES F, GREENAN, IAIN M, RICHEY, LUKE, CAST, MICHAEL W, SHAFFER, RAYMOND, WILLIAMSON, SCOTT, GARCIA, CESAR G, ZIMMERMAN, PATRICK J, CROWLEY, SCOTT
Format: Patent
Sprache:eng ; fre
Schlagworte:
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
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Beschreibung
Zusammenfassung:A sliding sleeve (100) opens with a deployed ball (B). The sleeve has a seat (150) disposed in the housing (120), and the seat has segments (152) biased outward from one another with a C-ring or other biasing element (154). Initially, the seat has an expanded state in the sliding sleeve so that the seats segments expand outward against the housing's bore. When an appropriately sized ball is deployed downhole, the ball engages the expanded seat. Fluid pressure applied against the seated ball moves the seat into the inner sleeve's bore. As this occurs, the seat contracts, which increases the engagement area of the seat with the ball. Eventually, the seat reaches the shoulder (137) in the inner sleeve so that pressure applied against the seated ball now moves the inner sleeve in the housing to open the sliding sleeve's flow port (126).