W-k-m Wellhead Systems, Inc.

Frederic D Wells, Jr

William L Godare

Robert J Diehl

A geothermal wellhead assembly (22) has a casing head (26). An inner casing (12) within the casing head has a restrained lower end portion and an unrestrained upper end portion extending above the casing head. An expansion spool (28) is mounted on the upper end of the casing head and receives the upper end portion of the inner casing. An expansion sleeve (92) fits within the expansion spool. The outer surface (94) of the expansion sleeve is adjacent the inner surface (60) of the expansion spool and an annular space (98) is defined by the inner surface (96) of the expansion sleeve and the outer surface (76) of the inner casing. A packing assembly (108) is mounted within the annular space and extends in sealing relation between the inner casing and the expansion sleeve. The packing assembly is movable with the upper end portion of the inner casing as the inner casing moves longitudinally in response to temperature changes within the wellhead.

Geothermal wellhead packing assembly

A packing support assembly (10) adapted to be sleeved about a well casing ('C'), or the like, and secured thereto without the need for piercing the casing wall or welding thereto. The support assembly (10) comprises an anchor ring (11) which is sleeved about the casing ('C') and secured thereto by a first fastening means in the form of a plurality of circumferentially located fastening means such as radial bores (22) and set screws (31). The anchor ring (11) is provided with flexible fingers (61) having ridged surfaces (16) which are also adapted to rip the external wall of the casing ('C'). The flexible fingers (61) are wedged inwardly to grip the casing ('C') by means of a retainer ring (71) which is threaded onto the exterior of the anchor ring (11) and provided with an internal wedging surface (75) which is slidably engageable with cooperating wedging surfaces (52) on the exterior of the flexible fingers (61) of the anchor ring (11 ). The gripping force is adjustable as determined by the degree of turning of the set screws (31) and the amount of rotation and threaded connection of the retainer ring (71) on the anchor ring (11). The upper annular edge (81) of the retainer ring is configured to support and retain an annular packing, or the like, thereon.

Packing support for mounting a well casing packing

A steam separator (10) has a generally horizontal baffle plate (18) which separates the separator vessel (12) into an upper steam chamber (20) and a lower water chamber (22). The baffle plate (18) has a central opeing (51) which provides a flow passage to permit steam from the water chamber (22) to rise into the steam chamber (20). A steam outlet (28, 100) is connected to the vessel (12) for discharging steam from the steam chamber (20). The baffle plate (18) has a plurality of openings (62) at the periphery thereof, and each opening (62) has a scoop (60) associated therewith. Each scoop (60) extends over its respective opening (62) and faces in substantial opposition to the direction of motion of the swirling fluid to receive and direct the swirling fluid into the water chamber (22). Each scoop (60) has an upper portion (68) which extends upwardly from the baffle (18), a lower portion ( 70) extending downwardly from the baffle (18) and associated opening (62), and a side plate (74) extending along the inner side of the scoop (60).

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Shreveport, LA, United States of America

Frederic D Wells, Jr