US1587715A - Deflector for slip actuating weights - Google Patents

Description

June 8 1926.

c. E. FRAZIER DEFLECTOR FOR SLIP AGTUATING WEIGHTS Fill'A il ,-.i5, 1925 gnve'ntov Patented June 8, 1926.

UNITED STATES PATENT OFFICE.

CHARLES E. FRAZIEB, OF DALLAS, TEXAS ASSIGNOR TO THE GUIBERSON CORPORA- TION', OF DALLAS, TEXAS, A CORPORATION O]? DELAWARE.

DEFLECTOR FOR SLIP ACTUATING WEIGHTS.

Application filed April 13, 1925.

This invention relates to new and useful improvements in deflectors for slip actuating weights. f

The object of the invent-ion is to provide a deflector for slip actuating weights for tubing catchers, casing spears and the like.

A particular object of the invention is to provide a deflector held in fixed relation to the lower end of a slip actuating weight for preventing unintentional upward dis placement of the weight, due to impact or pressure resistance when lowering the device into the well. 7

A further object is to apply such deflector to the device without enclosing the weightsu'st-aining spring and thereby avoiding a sand trap;

A particular object of the invention is to support the deflect-or in close relation to the bottom of the weight from a point below the collar.

A construction designed to carry out the invention will be hereinafter described to gether with other features of the invention. v The invention will be more readily understood from a reading of the following spec-ification and by reference to the accompanying drawings in which an example of the invention is shown. and wherein:

Fig. 1 is a partial elevation of a tubing catcher showing the slip actuating weight and a deflector constructed in accordance with my invention,

Fig. 2 is a plan view of deflector detached from the catcher,

. Fig. 3 is a cross-section on the line 33 of Fig. 1, and

Fig. 4c is an underside view of the couw pling and deflector.

In the drawings the numeral 10 designates the tubing section or mandrel of an ordinary tubing catcher such as is now in common use and of the type shown in Letters Patent No. 1,218,549 issued to S. A. Guiberson, J12, March 6th, 1917; and while I have chosen such a device with which to illustrate my invention, it is to be understood that it may be applied to any tool or device of this character or in which a slip actuating weight is used. I have only shown a part of the tubing catcher and this is deemed sufiicient to explain the invention.

The slip actuating weight 11 is mounted to slide freely on the section and is con nected at its upper end with the gripper Serial No. 22,720.

slips (not shown). This weight is sup ported on the upper end of a coiled compression spring 12 which surrounds the tub ing section and in turn rests upon a coupling 13 screwed onto the lower end of the section. The coupling receives the tubing 14: below the catcher.

Itwill be seen that in lowering the catcher into a. well easing, an impact sustained by the lower end of the weight 1]., such as a sudden contact with a bodyof oil or the resistance offered by the upward flow of a heavy gas pressure, would force the weight upwardly and raise and spread the slip, thus causing the catcher to unintentionally grip the casing and interfere with its downward passage.

In order to prevent unintentional or accidental displacement of the weight I provide a deflector comprising an annular collar 15 having a bore 16 sufficiently large to permit the spring 20 to slide freely therethrough. The collar 15 has an outwardly flared flange 17 at its upper end and is dished to receive the lower bevelled end of the weight 11.

In order to support the collar in fixed relation to the weight a plurality of upright standards or bars 18 have their lower ends countersunk in radial bosses 19 on the coupling 13. The upper ends of the bars are countersunk in the collar 15 below the flange 17. The bars are fastened by screws 20 or other suitable means. The bars pass outside the spring 12,but do not enclose the same, thus sand is not trapped about the spring. The flange 17 of the collar is greaterin diameter than the weight and presents a rounded surface to an upward flowing fluid. The deflector collar thus acts to deflect a fluid from the bottom as well as the sides of the weight.

It will be seen that the weight 11 and spring 12 are free to operate without in terference from the deflector. The collar is set close enough to the bottom of the weight to protect the same, but sufficient space is left therebetwecn to afford a free drainage through the bore 16 of the collar. If the weight 11 should compress the spring 12 to such an extent that the lower end of said weight came into contact with the collar 15, the latter could be lowered by removing the screws 20 in the bosses 19 and utilizing the extra holes 21 in the bars 18.

Various changes in the size and shape of the different parts, as well as modifications and alterations may be made within the scope of the appended claims.

lVhat I claim is 1. The combination with a slip actuating weight, of a deflector collar having its upper 7 collar having its upper end dished to receive the lower end ot' the weight, and an upright support at the upper end of which the collar is mounted.

4. A fluid deflector for a slip actuating weight comprising, a fixed deflector collar having an outwardly extending rounded flange'and dished to receive the lower end of the weight, and upright supporting bars depending from the collar.

5. The combination with a coupling and slip actuating weight spaced above the coupling, of stationary supports carried by the coupling, and a fluid deflecting collar mounted at the upper ends of the supports immediately under the weight and in immovable relation thereto.

6. The combination with a coupling and slip actuating weight spaced above the coupling, of stationary supports carried by the coupling, and a fluid deflecting collar mounted at the upper ends of the supports immediately under the weight and in immovable relation thereto, said collar being larger in diameter than the weight.

the the 7 weight.

7. The combination with a coupling, a. tubing section extending upwardly from the coupling, a compression surrounding the tubing section, and a slip actuating weight mounted to slide on the tubing section and supported by the spring, of supporting bars extending upwardly from the coupling longitudinally of the spring, and an annular deflector collar immovably mounted on the upper ends of the bars immediately under the weight and surrounding the upper end of the springs. i

8. A deflector for a tubing catcher comprising a collar, and means for holding the collar immovable at the lower end or" a slip actuating weight, the collar being open around its upper edge.

9. The combination with an exposed-sh) actuating weight, of an annular deflector co lar having its upper outer margin free from enclosures, whereby the weight is exposed, and a support for said collar.

10. The combination with the slip actuating weight of a tubing catcher, of an annular deflecting collar immovably supported just under the lower end of said weight, the upper end oi the collar being open to permit a lateral passage of fluid and sand between the collar and the weight.

1].. The combination with the slip actuating weight of a tubing catcher, ogt' adeflecting collar immovably sup-ported just under wei ht, the weight being exposed above collar. l2. Thecombination with the slip actuatingwei ht of a tubing catcher, of an annular deflecting collar, and a plurality of upright spaced. supportsv for supporting the collar contiguous to the lower end of the In testimony whereof I affix my signature.

CHARLES E. FRAZIER.

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