US1470329A - Well-drilling rig - Google Patents

Description

Oct. 9

R. H. RAMSEY WELL DRILLING RIG Filed June 5, 1922 lllll 1 Patented theft. 5%, i923.

RALPH. HAMILTON RAMSEY, .FkR-DldOBE, OKLAHOlViA.

VJELL-DRILLING RIG.

Application filed June 5,

1 0 all 012710772 61 may concern:

Be it known that I, RALPH H. citizen of the United States, residing at Ardmore, in the county of Carter and State of Oklahoma, have invented certain new and useful Improvements in Well-Drilling Rigs; and l. do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in well-drilling rigs and has as an object to provide improved means for vertically reciprocating casing pipe.

More particularly the invention aims to improve upon certain features of the well drilling rig disclosed in my application filed September 8, 1920, Serial No. 408,961.

The invention consists in the provision of an improved casingsustaining member which may be readily coupled to the casing, said member having sheaves disposed on opposite faces to receive the cables for elevating the casing. The invention further consists in the method of vertically reciproeating the casing.

The novel features of the invention will appear from the detailed description taken in connection with the accompanying drawing forming part of this specification.

Referring to the drawings,

Figure 1 is a diagrammatic plan view of Fig. 2, showing the application of the invention and the cable system for vertically reciprocating the well casing;

Fig. 2 is a side elevation of Fig. 1, only sufiicient portions of the well rig being; shown to illustrate the application of the invention Fig. 3 is a perspective view of the improved casing-sustaining member or elevator; and

Fig. 4 is an elevation of a collared wellcasingshowing the elevator partly in elevation and partly in section and in open position.

lln the drawings, 10 and 10 designate the corner supporting columns of a well rig; 11 the framing of the derrick proper; and 12 the cross beams of the training. 13 indicates the legs and 14 is cross beams of a stand on which parts oi the casing elevating means are located. 14 is the well casing, 15 the pipe coupling or collar thereon; 16 the Ramsey, a

1922. Serial no. 5653562.

hose through which compressed fluid is passed into the casing, and 17 the fluid tight cap screwed onto or into the collar 15. The boring-tool supporting-cable is shown at 18.

Surrounding; the well-casing 14 is, below the collar 15, what for the descriptive purposes, will be termed, an elevator 20. The elevator comprises two complementary, separable parts or sections a and Z) defining between them a bore of slightly larger diameter than the casing 14 to allow free relative rotation therebetween. Each section is provided with a pair or" sheaves 21 preferably arranged one above the other on separate axles. It will now be understood that the elevator is planed around the casing, the collar on the latter preventing upward displacement.

Cooperating with the elevator is a cable system for elevating the casing. Secured to the supports 10' is one end of a cable 22. This is rove below the lower sheave on the elevator then around a pulley 23 attached to the framing or support 10, then below the upper sheave on the elevator and finally over a pulley 24 on the stand 13, 14, the free end of the cable being connected to a slidable block 25. A pair of cables 22 is provided, one for each section of the elevator.

l have shown the elevator sections as hinged along one longitudinal edge, but this is not absolutely necessary, but is primarily for the purpose of preventing the sections from becoming misplaced when not in use. Inasmuch as a pair of cables 22 is provided, one in cooperative relation with either side of the elevator and the loops of the cables are arranged in close proximity, the sections of the elevator will be maintained in operative engagement with the casing pipe without the necessity of means for locking the sections in place about the casing. It will, therefore, be appreciated that considerable time is saved when it is necessary to remove the elevator from the casing pipe as when a new section of casing is to be added.

It may also be pointed out that by looping the cable and passing two leads of the same under the two sheaves carried by the elevator sections, that less power is required to elevate the casing" than would be the case where single lead of cable is employed. It may be pointedout that the casing is given a rotary movement as well as a vertically reciprocating movement, the means for imparting this rotary movement not being shown.

What I claim is:

1. In combination with a casing pipe having a collar thereon, of a multiple section elevator removably secured about the casing below the collar, means maintaining the elevator sections in place about the casing comprising a pair of parallel cables passing one on each side of the casing and through the opposed sections.

2. The combination with a casing having an abutment, of a two-part elevator placed around the casing below the abutment, a pair of sheaves carried by each said part, and means maintaining the elevator in closed position about the casing comprising at each side of the casing a cable passing through said sections and maintained in given position above the elevator.

The combination in a well rig, of means for moving a casing comprising an elevator mounted loose on the casing, means preventing separation of the casing and elevator con'iprising a cable double on itself, the loop of the cable passing over a pulley secured to the Well rig frame and both cable sections passing under sheaves carried by the elevator, one end of said cable secured to the said frame and the other end to a movable block, a second cable similarly arranged on the opposite side of the casing, cables being maintained in parallel relation adjattein he elevator.

In testimony whereof I ailix my signature.

RALPH HABHLTON RAMSEY.

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