US1837839A - Polish rod guide - Google Patents

Description

Dec. 22', 1931 B. wv SHANKLAND ET AL 1,837,839

POL]: SH ROD GUIDE Filed July 25, 1925 IhVen Z0215.

Patented Dec. 22, 1931 UNITED STATES PATENT. OFFICE BEAL W. SEAN KLAN D, O]? SHREVEPORT, AND ALLEN T. DUNCAN ,OF TREES, LOUISIANA, ASSIGNORS TO STANDARD OIL DEVELOPMENT COMPANY, A CORPORATION OF DELA- WARE Application filed July 25,

This invention relates to guides for polish rods, pistons and pump rods operated by power applied in directions varying from the directions of the lengths of the pistons or rods.

The invention and the operation thereof will be clear from'the accompanying drawing and description in which the figure is a diagrammatic vertical section showing the preferred embodiment of the invention as applied to polish rod guides for pumping 011 wells.

A pump rod or polish rod 1 extends downward into well casing 2 for pumping, operating tools and for other purposes requiring the rod to travel up and down or back and forth in the direction of its length. A beam 3 is the usual walking beam or in lieu thereof other means of applying power to the rod 1 may be used. A link 4 forms the connection between the beam 3 and a head or triangular framework 5 attached rigidly at one corner to the top of rod 1 and may be rigid as a piece of pipe, iron or wood, or if the rod 1 or head 5 be sufliciently weighted, then the link 4 may be flexible as a piece of rope, cable or wire and may be suitably reinforced by other means if desired.

The head 5 is attached to the top of the polish rod 1 and between the link 4 and the head 5 there is a swing joint 5 which forms a suitable, movable connection between the link 4 and one corner of the head 5 on the rod 1 to permit the head 5 to be pulled and pushed back and forth in the direction of the length of rod 1 by means of the link 4 moving up and down by power applied through the beam 3. If the head 5 or rod 1 is sufficiently weighted it will of course move downward by its own weight. The beam 3 is supported by the usual center irons (not shown) at about the m1ddle thereof and the end (not shown) of the beam 3 is attached to the usual band wheel (not shown) or other means of transmitting power from an engine or other source of power, thus forcing the end of beam 3 shown in the drawing to move alternately up and down.

The downward motion of beam 3 is some- 50 times controlled by a wooden headache post 6 1925. Serial No. 46,141.

against the top of which beam 3 strikes, thus preventing beam 3 from going down too far and jamming the pump plunger or tools in the casing. As shown a guide 7 is attached to the post 6 on the side nearest the rod 1; an

independent support or that of the walking beam may be used as a post for the support of the guide 7. The guide 7 as shown is preferably a bar of iron or a pipe curved or otherwise suitably shaped so that the ends and intervening portions thereof may be attached to and supported against the post 6.

7 If desired an additional guide 7 may be used and may be similarly formed and placed so as. to supplement the guide 7. A roller 8 supported by a suitable frame work 9 at tached to the head 5 is located so as to move up and down against the guide 7 as the rod 1 moves up and down; and if the guide 7 is used the roller 8 will move up and down between the guides 7 and 7 Any desired sliding or rolling device may be used instead of the type shown of roller 8.

.In operation the power applied as indicated to the beam 3' causes the rod 1, unless guided in some manner, to bend or oscillate back and forth toward and away from the fulcrum on which the beam 3 rests, so'that as beam 3 rises and falls as up and down motion of the stantially vertical line thereby eliminating much of the friction and wear. The guide 7 prevents the oscillation of the head 5 and the rod 1 toward the fulcrum or center irons or walking beam support; and, if used, the guide 7 prevents this oscillation away from the fulcrum, center irons or walking beam support. The use of this inyention transfers the friction and wear from the rod 1 and the stuffing box at the top of the well casing 2 to the guides 7 and 7 which are rigid and accessible for easy lubrication and replacement.

The joint between the link 4 and the head 5 is suitably arranged in any convenient manner to conform to the types of tools and power transmission in use.

In those cases where power is applied for pumping by means of jacks, cables or engines instead of walking beams, this invention may be conveniently used by erecting a suitable post corresponding to post 6 adjacent to rod 1 and in the vertical plane of the oscillation of rod 1 and the side of this post 6 nearest rod 1 attaching the guide 7, and

if desired, the guide 7, with the necessary frame work 9'and the head 5 of suitable'size attached to the rod 1. 7

I 'This invention is susceptible of various other forms of application and the device is suitable for use with rods or pistons of any kind operating vertically, horizontally or otherwise by means of power applied thereto. in a direction different from the direction of the length o-fthe rod or piston.

Various modifications and alternative arrangements may be made within the scope of the appended claims in which it is our intention to claim all novelty inherent in the invention as broadly as the state of the art permits. a I a What we claim is: v

1. In a rigid vertical guide device to prevent oscillation of pump or polish rods used in pumping oil wells by means of power transmitted to a link connected to a walking beam, the improvement which comprises a fixed guide, a triangular framework adapted to be attached rigidly at one corner to the upper part of the rod and extending to the guide, the opposite corner of the framework being adapted to be connected by swing connection with the link, and a slidable member on the framework adjusted to slide. on the guide as the framework moves up and down with the rod, thereby preventing oscillation of the rod. Y

2. The device according to claim 1 in which the fixed guide consists of supports of parallel bars, andthe slidable member being adapted to move up and down between the parallel bars. 7

BEAL' W. SHANKLAND;

ALLEN T. DUN CAN

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