US266848A - Daniel l - Google Patents

Description

IINiTnn STATES PATENT Trice.

DANIEL L. LEWIS, OF BRADFORD, PA., ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO ISAAC LEVIS, OF JOHNSONSBURG, N. Y., AND L. C.

HALLOOK, OF ERIE, PA.

OIL-WELL PACKER.

SPECIFICATION forming part of Letters Patent No. 266,848, dated October 31, 1852 Application tiled October Q3, 1881. (No model.)

To all ywhom fit may concern Be it known that l, DANIEL L. Lnwrs, a citizen of the United States. and a residentofBradford, in the county of McKean and State of Pennsylvania, have invented new and useful Improvements in Oil-Vell Packers; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had tothe accompanying drawings and the let- Io ters or figures of reference marked thereon.

Myinvention relates to the construction of packers for oil or other deep-bored wells; and it consists in improvements in the form et' the pressing-flanges and their connection with the packing material, and incidentally in the form ofthe packing material.

My device is illustrated in the accompanying drawings, as follows:

Figure lis a perspective elevation of my dezo vice with a section cut out to show internal construction. Fig. 2 is avertical section ofthe saine shown as under pressure.

Previous to myinvention the packing material has been compressed between two ilat z5 ilanges, or by an expanding cone which enters the rubber annulus and wedges it out against the wall ofthe well. In either ease great difculty has been experienced in withdrawing the packer when found necessary so to do, for

3o the reason that the upper outer corner of the annulus has become adhered tothe wall of the well, and any attempt to raise it, even after all pressure is removed from it, tends to turn the annulus wrong side out, and ofcourse entirely prevents its removal until these corners are removed from the wallof the well. Whether the pressing-Ilanges be ilat or conical .the above ill effects are encountered.

It is the object of my present invention to 4o remedy this defect. To this end I have constructed the parts of the packer as follows:

A A represent the upper and lower sections of the well-tubing, respectively, the part A', or lower section, being sometimes called the 4 5 anchoa B is the small inner tubing forming the slipjoint7 and is in effect a part of the upper section.

D and D are the compressingilanges,7 so

called because the annulus or packing mate- 5o rial is compressed between them in packing the well.

E is the rubber annnlus or packing material, and is asolid block of rubber pierced longitudinally, so as totaround the tubing. The peculiar form of this annulus, as shown, as well as some of the other features shown in thc drawings, constitutes the suliject-matter ot' another application for a patent filed by me, and hence will not be described here.

It will be seen that the flanges D and D are provided with vertically-projecting annular llanges or rims d d, forming a ring or section of a cylinder between the ends ofthe annulus and the wall ofthe well. This is for the purpose of preventingthe ends of the annulus from bulging out toward or against the wall of the well when under pressure. The ends of the annulus may lie-narrowed down,forming necks, as shown ate c, leaving the thicker part-of the 7o annulus to extend outward under the edge of the ilange or ring d. A head or lip, d, may also be formed on the inside of theringor ilange t0 embed itself in the rubber and assist in holding the neck firmly within the cap-shaped ilange. This is of advantage when drawing out the tubing or lowering it into the well, as it insures the keepingof the packing material in place within the cap-shaped Ilange.

It will be seen that with a ilange constructed 8o in substantially the f'orm shown-t1 e., so as to encircle orem brace the end of the annulus-the said annulus is fully supported against outward pressure at the end when under longitudinal pressure, and hence the packing material will, when under said longitudinal pressure, bulge out in its intermediate surface, which is the most effective in packing the well and the easiest to disengage from the wall of the well. 9o

I am aware ofthe patent to F. Martin, September 12,1865,and I hereby disclaim as forming any part of my invention the subjectmatter therein shown.

I am aware that it is 01d to provide the rnb- 95 ber annulus of an oil-well packer with a ring or section of acylinder to prevent contact of the end of the annulus with the wall of the well, and to support the rubber against outward pressure, as such a construction is shown in patent to Robinson and Strong, No. 52,448, February 6, ISGG-Weli-packing--and to that I make no claim.

What I claim as new is- 1. In combination with the tubing of an oilwell, a cylindrical elastic block pierced with a central longitudinal opening, and provided with a neck at the end thereof, adapted, as shown, to t within a cap-shaped pressingiiange, for 'the purposes mentioned.

2. In an oil-well-packing device, a solid elastic annulus provided with a neck at the end, in combination with a flange for pressing the Same, which is provided with an annular rim for embracingl said neck, substantially as and for the purpose set forth.

3. In an oil-WelLpacking device, a solid elastio annulus provided With a neck at the end, in combination with a flange for pressing the same, which is provided with an annular ring or rim for embracing the said neck, which rim is provided on its inside with a lip 'or bead,

and the said necks embraced by the said annular rims on said ianges.

5. In an oil-well packer, a compressing-flange adapted, substantially as shown, to cap over or encircle the end of the rubber annulus, for the purposes mentioned.

In testimony that I claim the foregoing I have hereunto set my hand this 25th `day ot'- October, 1881;

DANIEL L '.LEWIS. Witnesses:

JN0. K. H'ALLocK, W. S. BROWN.

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