US1538093A

US1538093A - Sucker rod

Info

Publication number: US1538093A
Application number: US641862A
Authority: US
Inventors: Dudley R Dale
Original assignee: S M JONES Co
Current assignee: S M JONES Co
Priority date: 1923-05-28
Filing date: 1923-05-28
Publication date: 1925-05-19
Anticipated expiration: 1942-05-19

Description

May 19,1925; 1,538,093

' D.R.DALE

x SUCKER ROD Filed Max 9 3 .1, ENTER f PQ Patented May 19, 1925.

UNITED STATES 1,538,093 PATENT OFFICEQ' DUDLEY R. DALE, 0F TOLEDO, OHIO, ASSIGNOR TO THE S. M. JONES COMPANT', OF TOLEDO, OHIO, A CORPORATION OF OHIO.

SUCKER ROD.

Application filed May 28,

To all whom it may concern:

Be it known that I, DUDLEY R. DALE, a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have made an Invention Appertaining to a Sucker Rod, which invention is fully set forth in the following specification.

My invention has for its object to provide a means for protecting relatively reciprocating metal parts from wear caused by'the reciprocatory movements. The invention is of special advantage when embodied in a construction wherein there is considerable loose lateral play between the reciprocatory parts. The invention particularly has for its object to provide a means for protecting the metal tubing of oil wells from thewearing action of the reciprocating sucker rod. The sucker rods are formed of joined sections having connecting parts of larger diameter than the body of the sucker rod for joining the sections of the sucker rod together. In oil wells of considerable depth the Variation of the strata through which the well extends causes considerable deviation from the vertical, with the result that when the sucker rod is placed in posit-ion and reciprocated to pump the oil from the well the parts of the sucker rod are pressed with considerable pressure against the tubing that forms the wall of the well. Continual reciprocation of the sucker rod causes wear and'in a very'short time causes leakage and loss. A variety of protective devices have been suggested in the art, but I have found that by forming the connecting parts of a softer metal than that of which the tubing is formed, the wear and tear is quite completely eliminated. The metal of the connectors being different from that of which the tubing is formed, the friction between the parts is greatly reduced. The connecting parts, moreover, are considerably larger than the body of the sucker rod so that the bearing points as between the reciprocating sucker rod and the tubing will be on the connectors, notwithstanding the deformation of the oil well produced in the drilling of the well.

Furthermore, as the connectors wear they may be readily renewed or replaced and thus save the expense of new forgings forming the ends of the sections of the sucker rods. Also connectors of different sizes may be used for connecting sucker rods of the same 1923. Serial No. 641,862.

as a rule a certain relative size to thediam eter of the tubing. By my invention, the same sized rod may be used with connectors of varying sizes and thus may be used in tubing of different diameters. The size of the connector used will be such as to maintain the proper relation between the size of the connector to the diameter of the tubing. Anjembodiment of the invention is. illustrated in th accompanying drawings wherein is shown an oil' well sucker rod that is described in detail, hereinafter.

Referring to-the drawings, Fig. 1 illustrates a side view of one form of connector located at the joints of the sections of the sucker rod. Fig. 2 illustrates a broken View of one ofthe sections. Fig. 3 illustrates a modified form of connector. Fig. 4 illustrates a broken View of the sucker rod havingthe connecting means shown in Fig. 3. Fig. 5 illustrates a side view of the connector shown in section in Fig. 3.

I11 Figs. 1 and 2, 1 indicates sections of a sucker rod. The ends of the sucker rod have threaded portions 4 which are known as pins. A relatively long sleeve issecured to the lower end of eachsection of a sucker rod. Enlarged portions or'shou'lders 5 are located at the basesof the threaded pins 4. The sleeves 2 are provided with thinor feathered edges 6. The sleeves 2 are thre aded onto the lower endsi until the'edge portions 6 extend over'the shoulders5 and the sleeves abut against the shoulders 5. The thin edges 6 of the sleeves 2 are then bent or crimped down over the shoulders 5 so as to the lower ends of the'sucker rod is pre" vented notwithstanding the continual reciprocatory movement of the sucker rod in the operation of the pump. If desired, the flanges 6, after they have been bent down over the shoulders 5, may be spot-welded and thus further secured.

The upper end of each section of the I sucker rod is provided with a relatively short sleeve or collar 8 through which the upper pin 4 of each joint of the sucker rod protrudes. The sleeve 8 is also provided with a thin edge portion 6 of a form like unto that of the sleeve 2, while the upper end of each section of the sucker rod is also provided with a shoulder 5 over which the thin edge portion 6 of the sleeve 8 is bent and secured in the same manner that the thin edgeportion of the sleeve '2 is secured to the sucker rod.

The sections of the sucker rod are joined together by tightly screwing the sleeve 2 of each consecutive section of the sucker rod onto the pin 4 of each preceding section of the sucker rod as the sections thus united are lowered into the tubing of the well. The sleeves 2 and the collars 8 have the same diameter, and moreover, the ends slope toward the aXis of the sucker rod. Consequently a smooth cylindrical surface having a diameter considerably larger than any of the other parts of the'sucker'rods is presented to the surface of the tubing, with the result that bearing or rubbing points of the sucker rod and the vibration and pounding that is caused by the reciprocatory movements of the sucker rods is sustained on the sleeves that surround the ends of the sections of the sucker rod. The sleeves 2 and 8 formsoft steel boxes that take the wear and thus prevent the wear of the reciprocatory and vibratory movements on the tubing.

The boxes are formed of low carbon steel 'bent over the shoulders 5. A sleeve coupler 9 is threaded onto the lower pin of each section of the sucker rod until it abuts with the sleeve 8 located on that end of the sucker rod. The connector 9 is threaded onto the upper pin 4 of the uppermost section of the sucker rod in the top of the well as the sucker rod is being formed and lowered, section by section, until it abuts the sleeve 8 located on the upper end of that section. The connector 9 is provided with flattened portions located on opposite sides, as at 10, whereby a wrench grip may be readily ob t ained and a secure coupling as between the sections of the sucker rod may be produced. This form or type of sucker rod will also protect the casing since the sleeves 8 and the couplings 9 located at the joints of the sections have a diameter larger than any other part of the sucker rod and are formed 'of soft low carbon steel, and consequently of a metal different from that of which the tubing is formed.

I claim:

1. In an oil well jointed sucker rod, each section of the sucker rod having threaded pins, and enlarged portions forming shoulders, sleeves surrounding the base of the pins and having feathered edges crimped down over the shoulders to prevent rotation of the sleeves relative to the pins, means for connecting the sections together, the said sleeves having a diameter greater than the other parts of the sucker rod and forming bearing parts for the sucker rod.

2. In an oil well jointed sucker rod, each section of the sucker rod having threaded pins, and enlarged portions forming shoulders, sleeves surrounding the base of the pins and having feathered edges crimped down over the shoulders and spot-welded thereto to prevent rotation of the sleeves relative to the pins, means for connecting the sections together, the said sleeves having a diameter greater than the other parts of the sucker rod and forming bearing parts for the sucker rod.

In testimony whereof, I have hereunto signed my name to this specification.

DUDLEY R. DALE.