Universal rotating stripper adapter

Abstract

A stripper adapter mounted on a coiled tubing injector head unit includes a swivel ring secured between an upper thrust washer and a lower thrust washer, wherein the swivel ring is rotatable 360 degrees about a longitudinal axis.

Claims

1. A stripper adapter mounted on a coiled tubing injector head unit, the adapter comprising: a swivel ring located between a lower surface of the stripper adapter and a lower plate attached below the lower surface; a thrust washer located between a portion of the swivel ring and the lower surface, and a thrust washer located between a portion of the swivel ring and the lower plate, wherein the swivel ring is rotatable 360 degrees about a longitudinal axis, wherein the swivel ring comprises one or more locations for attaching a stripper rubber to the swivel ring.

2. The stripper adapter of claim 1, further comprising a support mount for attaching the stripper adapter to the coiled tubing injector head unit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention is illustrated in the accompanying drawings wherein,

(2) FIG. 1 illustrates generally a coiled tubing setup.

(3) FIG. 2 illustrates a prior stripper mount.

(4) FIG. 3 illustrates a perspective view of an embodiment of a universal rotating stripper adapter.

(5) FIG. 4 illustrates a section view of an embodiment of a universal rotating stripper adapter.

DETAILED DESCRIPTION

(6) A universal rotating stripper adapter is disclosed. The universal rotating stripper adapter is configured to be mounted onto coiled tubing injector units and is adaptable to fit with any mounting pattern or tubing size without the need for changing stripper mounts or sacrificing equipment wear and performance. Having a replaceable swivel plate allows for less expensive replacement, less space required for crews to carry spare parts, and the reduced downtime, which also results in savings of crew time.

(7) FIG. 3 illustrates an embodiment of a universal rotating stripper adapter 200. The adapter 200 may be mounted on a coiled tubing injector (not shown) with any type of fastener, for example, locking rods 201. The adapter 200 includes a lower plate 202 attached to a lower surface of the adapter 200 by bolts at mounting holes 204. The adapter 200 further includes a swivel ring 206 mounted between the lower surface of the adapter and the lower plate 202. The swivel ring 206 is generally cylindrical about a longitudinal axis and has a hole through the middle.

(8) Thrust washers 203 are mounted above and below the swivel ring 206 to allow 360 degree rotation of the swivel ring 206. A stripper (not shown) may be attached to the swivel ring 206 at mounting holes 205. FIG. 4 shows a section view of an embodiment of the universal rotating stripper adapter. The swivel plate 206 is able to rotate 360 degrees due to sitting between thrust washers 203 positioned above and below the swivel plate 206. Rotation of the swivel plate 206 is a significant achievement in that the injector does not need to be turned at a slight angle or repositioned to fit the needs of a bolt pattern on a wellhead or wellhead equipment. The swivel plate allows for easy 360 degree rotation for positioning and effortless connection. The location and sizing of the two thrust washers 203 allows the mount assembly to swivel when the injector head unit exhibits either an upward force from the BOP or wellhead, or the downwards force from a injector unit.

(9) To replace the swivel ring 206, or the stripper packing, outer mount bolts and nuts may be removed from mounting holes 204, to allow the swivel ring 206 to be removed from the mount 202, and then re-positioned to secure the swivel plate 206 and thrust washers 203.

(10) The claimed subject matter is not to be limited in scope by the specific embodiments described herein. Indeed, various modifications of the invention in addition to those described herein will become apparent to those skilled in the art from the foregoing description. Such modifications are intended to fall within the scope of the appended claims.