US1710653A - Oil-well device - Google Patents

Description

April 23, 1929.

A. c. BRAMMER 1,710,653

1 21, 2 Sheets-Sheet April 23, 1929 Q BRAMMER 1,710,653

OIL WELL DEVICE Filed July 21, 1927 2 ShGBLSShGi 2 rushed Apr. 23, 1929.

UNITED STATES PATIENT; OFFICE.

ANTHONY (LBRAKMER, OF WICHI'I'A, KANSAS, ASSIGNOR OF ONE-THIRD TO J. '1. MCINNES AND ONETHIRD TO 3'. J. FITZTATRIGK FOTH F TULSA, OKLAHOMA.

OIL-WELL DEVICE.

Application filed July 21, 1927. Serial No. 207,534.

This invention relates to oil well devices, and more particularly to a combined tubing support, packing and oil saving device.

V It is the common practice to lower a string of tubing into an oil'well until it reaches the bottom of the well, and then to elevate the tubing a desired distance and secure it in position, the well being ready to flow oil in the-tubing by its natural gas pressure or by applying outside pressure either in the tubing or 'well casing as desired. The devices ordinarily employed for securing the tubing against downward movement in the desired position are unsatisfactory and 1 numerous devices have been proposed for overcoming the usual difiiculties. Such devices, however, are open to several objec tions', namely, they are usually complicated and expensive to manufacture,and they do not properly seal the tube to prevent oil from leaking past the outside of the tube.

An important obj-ectof the present invention is to providea simple and inexpensive 7 device which is'adapted to effectually sup:

port the well. tubing in the desired position regardless of its length and weight, without danger ofbreaking the tubing.

A furtherobjectis to provide novel packing means surrounding the tubing to prevent 3o lcaka e past the tubing.

A f urtherobject is to-provide novel means for compressing the packing to prevent the leakage referred to.

A further object is to provide a novel form of packing member and associated elements whereby the efliciency of the packing is greatly increased.

A further object is to provide a pa1r of relatively movable members between which the packing element is arranged, and. to provide novel take-up means for moving the relatively movable members toward each other to compress the packing. A further object is to provide novel mounting means for the packing to prevent it from becoming displaced.

' Otherobjects and advantages of the invention will become a parent during the course of the following description.

bodiments of the invention. In this showusual manner.

In the drawings Ihave shown several era-- Figure 2 is a transverse line 2-2 of Figure 1, i Figure 8 is a plan view of the device showing the tubing in position, I

. Figure 4 is a detail sectional view of one form of packing element,

Figure 5 is a central vertical sectional view of the modified form of the device,

Figure 6 is a plan view of the same, the tubing being shown in section, and,

Figure 7 isa detail perspective of a packmg ring.

Referring to the drawings, the numeral 10 designates the body of the device WhlCh lS provided at its lower end with a base 11 adapted to be received in the ordinary cas- 7o ing head and to be secured thereto in thep The body '10 is provided with a vertically extending substantially tubular portion 12. which is externally threaded asat 13 for a purpose to be described. The upstanding portion 12 is provided with a plurality of recesses 14 having downwardly converging inner walls as clearly shown in Figure 1. The device may be provided with Y any desired number of the recesses 14, and soin the present instance I have illustrated four of these recesses. The u per endof the upstanding portion of the ody is provided'with an annul r recess 15 fora purpose to be described. The body 10 is provided throughout its length with an axial opening 16 through which the well tubing 17 extends, the tubing being materially smaller in diameter than the opening 16, as shown.

A housing 18 is arranged at the'up or end of the body and is provlded with a epending annular sleeve portion 19 the lower end of whichloosely receives the up er end of the body and is adapted to part e of vertical movement with respect thereto. The upper end of the housing is prdvided with a conical recess 20 which decreases in diameter toward its lower end. If desired, the hous ing may be provided with cut out portions 21v sectional view on 55 to lighten its weight. The lower end 22 of the conical portion of the housing is substantially equal in internal diameter to the diameter of the opening 16, and outwardly of this portion of the housing, the latter is rovided with an annular recess 23 arranged in vertical alinement with the recess 15;

' Slips 24 are arranged within the conical recess 20 as shown in Figure 1. I have i1 lustrated three of the slips in Figure 3 of the drawings, but it will be apparent that any desired number may be employed. The outer faces of the slips are conical and are adapted to engage the wall of the .conical recess Y20 and it will be apparent that downward movement of the slips causes them to move inwardly toward the well tubing. The inner surfaces of the slips are protided with teeth 26 adapted to engage the t bing to prevent downward movement thereof. Each slip is provided with an ear 27 to which is pivotally connected a handle 28. l

ings the numeral '29 designates a packing member which is preferably formed of an oil resisting rubber composition. The packing member is substantially cylindrical and is adapted to be mounted within the sleeve 19, as shown in Figure 1. The upper and lower ends of the packing member are provided with annular flanges 30 which are adaptedto be received in the recesses 15 and 23. The packing member is provided with an axial opening 31 which is substantially equal in diameter to the tubing, and annular grooves 32 communicate with this opening whereby each packing element comprises in effect a plurality of rings which are adapted to contact with the tubing 17 for a purpose to be described.

As previously stated, "the body 10 'and' housing 18 are adapted to partake of verti- A collar 34 is threaded on the upstanding portion 12 of the body-and theupper face of the collar is adapted toengage against the lower end of the sleeve 19. The collar 34may be provided with outstanding lugs- 35 adapted to be engaged bya spanner] wrench br similar tool whereby the collar may be'rotated.

In Figures 5, 6 and 7 01? the drawings I have shown a somewhat modified form of the device. Referring to these figures, the numeral 36 designates the body of the device rovided at itsilower end with an outstan ing base 37 which is adapted to be secured in the casin head as will-be apparent. The body of the evice is provided with an upstanding substantially cylindrical portion 38 the outer face of which is provided with a plurality of recesses 39 the inner walls of w ich conver e downwardly similar to the inner walls 0 the recesses 14. A housing 40 is arranged over the body of the device, the housing being provided with depending Referring to Figures 1 and 4 of the drawcal movement with respect to each other and ing. It

'to employ three of the slips 44, as shown in Figure 6. Y Handles '45 similar to the handles 7 28, are secured to the slips.

A split packing element 46, preferably formed of an oilresisting rubber composition is mounted within the sleeve 40 and has its lower face supported upon the upper end of the body of the device. A split metallic packing ring 47 rests upon the upper face of the packing element 46 and is provided with an upstanding annular flange 48 arranged in an annular recess 49 formed in the housing 40. I

The operation of the form of the device shown in Figures 1 to 4 inclusive is as follows: L

The tubing is lowered intothe well in the usual manner, and the slips are adapted to support the tubing when it is desired to attach additional tubing sections by means of .7 the usual sleeves. The slips 24 are lowered into position byv their handles 28 until the teeth 26 engage the well tubing. It will be obvious that the teeth will efficiently support the tubing and any tendency of the latter to slide downwardly causes the slips to move inwardly to tighten their grip upon the tubing, due to the contacting conical faces of the slips and the recess 20. If it is desired yatedand tension removed from the packing member, the tubing and the sleeve jointsv thereon may be lowered further into the well as additional tubin sections are attached. The resiliency provided by the annularrecesses 32 permits the connecting sleeves of the tubin readily to pass throu h the packas ,been found that t e arrange ment of the flanges 30 of the packing element in the annular recesses 15 and 23' causes the packing elementto be firmly held against dislodgment. After the packing element has been suitably compressed, the collar 34 .isrotated until 'it :firmly engages the lower end of the sleeve 19. ,Thiacbllar' then serves toprevent any relative movement, either vertically'or laterally, between the body of the device and the housing and accordingly it' be apparent that the ele- 18.0

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past the tubing while it is being lowered in position. After the tubing has reached the desired depth, however, the. packing 29 may be replaced with the packing and retaining ring shown in Figure 5, these elements serving as permanent packing for the tubing.

The operation of the form of the device illustrated in Figures 5, 6 and 7 is substantially the same as in the form of the device just described, except that the collar 34 and its functions are omitted. This form of the device may be manufactured more cheaply than the form previously described, but has been found to be efficient in operation in connection with wells which do not flow at the casing head. The rings 46 and 47 are omitted until the tubing is lowered to the desired depth, whereupon the rings referred to are placed in position. These rings are split as previously stated, and readily may be placed in position. After the elements are thus assembled the screws 42 are adapted to be moved inwardly to effect compression arranged within the recess 49, is adapted to secure the packing element" against dislodgment.

In either form of the device, the slips are adapted to firmly secure the string of tubing sections .in position regardlessv of their length and weight, without damaging the tubing or causing it to break. With the novel forms of packing elements described, it has been found that an eflicient seal is provided around the tubing to prevent the leakage of oil.

comprising a body portion having an up- 7 standing portion provided with downward converging walls, a housing arranged-over said body portion, packing means arran ed between said housing and said body portion, means carried by said housing and adapted to engage said inclined walls to move said housing and said body portion toward each other to compress said packing means, said upstanding threaded, and a co ar threaded thereon and adapted to engage the lower end of said housing.

2. A device of the character described comprising a body portion including an upstanding portion having an annular recess in its upper end, the outer face of said upstanding portion being provided with a plurality of recesses, the inner walls of which converge downwardly, a housing arranged over said body and provided with an annular recess arranged in alinement with said first named annular recess, said housing being further provided with a depending sleeve portion, a packing ring arranged between said housing and said body portion and provided with annular flanges arranged in said annular recesses, said ring hav'ng an axial opening therethrough, the walls of which are adapted to contract with a well tubing and are provided with annular grooves, a plurality of radial screws carried by the lower end of said sleeve and having their inner ends adapted to engage the converging walls of said second-named recesses, slips carried. by said housingand adapted to grip against the well tubing, said upstanding portion being externally threaded, and a collar threaded thereon and adapted to engage the lower end of said sleeve.

In testimony whereof I aflix my signature. ANTHONY C. BRAMMER.

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