US58468A - Improvement in packings for deep-well tub es - Google Patents

Description

PATENT OFFICE.

J. J. rnnxnmor MARIETTA, oHIo.

IMPROVEMENTIN PACKINGS FOR DEEP-WELL TUBiES.

Specification forming part of Letters Patent No. 58,468, dated October 2, 1866.

To all whom it 'may concern:

Be it known that I, J. J. PARKER, of Marietta, Ohio, have invented a new and useful Packing for Oil-Wells; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making part of this specification, in Which- Fignre l is a longitudinal vertical section; Fig. 2, a side view; and Fig. 3, a longitudinal vertical section of a part of the machine.

The nature of this invention consists in closing the space between the sides of a deep well and the tubing thereof by means of a bag consisting of double concentric tubing, fitted in the aforesaid space and made to expand to the required degree by hydraulic pressure.

This adjustable hydraulic packing is made as follows: I take two pieces of gum, leather, or other flexible tubing of the same length, but of different diameters, so that one may be placed within the other. The diameter of the exterior of these flexible tubes is nearly equal to that of the well to be packed, and that of the interior one is slightly greater than the diameter of the pump-tubing over which it is placed. The arrangement of all these tubes is seen at A B, Fig. l.

.C is a leather band, inserted at each end between the two bags or iexible tubes, holding them slightly apart. Inside the inner bag, at each end, is inserted a metallic ring about two inches in width,'and large enough toslip easily7 over the joints of the pump-tubing. The ends of the flexible tubes are securely tied or wired over the exterior of said rings, and thus a cylindrical bag is made, perfectly watertight under heavy pressure.

D is a circular sheet of metal, perforated with holes and placed between the flexible tubes, extending from one of the leather'bands above mentioned to the other, for the purpose of keeping the flexible tubes upright while being adjusted, and to prevent them from be- Y coming lodged in the well.

E is a piece of tubing inserted between the upper ends of the bags, extending inside just below the leather band C, and outside about four or five inches. A shoulder, la, is formed upon this tube, just above the top of the packin g-bag, to serve as a seat for a sleeve, F, slipped over it, which sleeve has a pin, g, running through it, working in a slot, m, in the tube E, so that the sleeve can be lifted up an inch or more, for a purpose hereinafter described. A spiral spring holds the said sleeve rmly upon its seat. In the sleeve, at the top of the inner tube, E, small holes a are made, and covered with an elastic band, H, which acts as a safety-valve for preventing too much pressure being exerted upon the packing-bag.

The operation ofthe machine is as follows: The packing-bag is placed upon the pumptubing and let down by means of a supplypipe attached to the sleeve and extending to the top of the well. Water is introduced into the packing-bag by means of the aforesaid supply-pipe, and the pressure thereof in the bag is regulated by the safety-valve H, as above described. By this pressure the outer tube is forced tightly against the sides of the well, and the inner one is forced as firmly against theoutside of the well-tubing, and the passage of water below the packing is thus entirely prevented. The pressure is removed from the interior of the packingbag by lifting the supply-pipe and sleeve F, and opening a passage for the water through the slot m. i

A similarl packing-bag may be placed below the valve-chamber of the pump, upon a pro-` longation of the pump-tubing, closed at its lower end and perforated at the upper end, be

By this method of packing deep wells every4 foot of the interior surface thereof lmay be sub-v jected to a suction powerful enough to thoroughly test them. The amount of tubing in the well may also be increased or diminished at pleasure without taking it all out, a thing which is necessary to be done when the presest general mode of seed-bagging is adopted.

By this device, also, the necessity of ream- 2 smzs ing out wells is done away with, as it can beV C, and the inner metallic sheet D, in combinareadily adjusted to the sides of the Well, no tion With the tube E,i11 the manner and for matter how rough they may be. the purpose described.

What I claim as my invention, and desire This specification signed and witnessed this to secure by-Letters Patent, is-

1. The sleeve F, pin g, and slot m, in combination with the safety-band H, in the man- Witnesses: ner described.

2. The outer and inner tubes, A B, the bands 29th day of February, 1866.

J. J. PARKER.

FRANK A. BROWN, MELVILLE BROWN.

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