US535334A

US535334A - Anchor well-packer

Info

Publication number: US535334A
Authority: US
Publication date: 1895-03-05
Anticipated expiration: 1912-03-05

Description

V... E L D A 0 H N. L

ANCHOR WELL PAGKBR.

No. 535,334. Patented Mar. 5, 1895'.

llNrTnn STATES FaTnNT @Terreno ISAAC N. HOADLEY, OF BRADFORD, PENNSYLVANIA.

ANCHOR WELLPACKER.

SPECIFICATION forming part of Letters Patent No. 535,334, dated March 5, 1895.

Application filed July 9, 1894. Serial No. 516,989. (No model.)

To all whom it' may concern.:

Beit known that I, ISAAC N. HOADLEY, acitizen of the United States, residing at Bradford, in the county of McKean and State of Pennsylvania, have invented certain new and useful Improvements in Anchor Well-Packers; and I do hereby declare the following to be a full, clear, and exact description of the in vention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in anchor packers for use in oil or gas wells, and it consists of certain novel features herein described and claimed.

Reference is had to the accompanying drawing, which represents a central longitudinal section through the well packer and the lengths of piping connected thereto.

A represents apipe coupling which is screwthreaded as at a and a', and provided with a iange d2 at the lower edge thereof. In the lower portion of the screw thread o. a disk B of friable material is secured. This disk is preferably made of brittle metal, Babbitt metal for instance, which is strong venough to sustain the upward pressure of gas in the well, and yet which may be broken when the packer is in place, by dropping a weight thereon from the top ofthe well. Into the upper portions of the threads a the screw-threaded end of the pipe above, not shown, is screwed. Into the screw thread a', the lupper end of the cylindrical telescopic piece C is screwed, and the screw-thread on the upper end of the said telescopic piece is carried far enough down to receive the screw-threaded portion d of the ring D which ring is provided with holding lips d and d2 engaging in the upper end of the rubber annulus E. The lower end of this rubber annulus fits over the tapering gland F which is screw-threaded at its lower end to engage in the screw-threads h of the ring H. This gland F is tapered as at f to bear on the rubber ring L, and the said rubber ring, gland and ring H form a stuffing box which prevents the gas or oil from getting in between the cylinder C, and the annulus E and pressing the same against the walls of the well. The ring H is also provided with a sloping face h so that the rubber L may be wedged tight against the cylinder C.

The lower portion of the ring H is screwthreaded as at h2 to receive the screw-threaded end of the coupling M, the upper face m of which bears against a shoulder on the ring H.

The upward motion of the cylinder C in the stufng box is limited by the nut K screwed on the threads c on the lower end of the said cylinder C.

P represents one of the lengths of piping, which is screw-threaded as at p to engage in the threads m of the coupling piece lvl.

The operation of the device is as follows:- rIhe well-packer with piping attached, is lowered into the well, until the lower end strikes bottom, when the weight of the upper portion of the piping will force the cylinder C downward in its stuffing box, causing the rubber annulus E to expand outward, and to completely iill the annular space between the tube C and the walls of the well, and preventing any escape of gas around the sides of the well packer. When the piping and well-packer are in position, a weight is dropped down the tubing, on the friable cap B, breaking the said cap and allowing the gas or oil to iiow out of the top of the well. To remove the packer and piping from the well, simply draw up on the line of piping, from the surface, when the telescopic tube G will be drawn up through its stuffing-box, and at the same time the lips d and d2 of the ring D will draw up the upper end ofthe annulus E straightening out the same, and allowing the well packer to be drawn freely up through the well.

It will be evident that the rubber annulus will be elongated vertically by the weight of the parts beneath the same, while the packer is being raised out of the well; but that it will be caused to bulge outward by the weight of the superimposed parts, when the line of pip ing strikes the bottom of the well.

The stuffing box arrangement herein described not only protects the annulus E from gas or oil getting beneath the same, but it also renders it possible to pump through the well should that be desired. These and the various other advantages of the herein described construction, will readily suggest themselves to any one skilled in the art.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

l. In an anchor well packer for oil or gas wells, the combination with a line of piping extending downward into the well, of a pipe coupling A screw-threaded at d and flanged at a2, a hollow cylinder C 4exteriorly screwthreaded at both its ends and engaging at its upper end in the threads a', the ring D provided with lips d and cl2, bearing against the said flange d2 and having screw threads d engaging in those at the upper end of the cylinder C; the rubber annulus E exterior to said cylinder C and engaging in said lips CZ and d2, a gas-tight stuffing box near the lower end of said tube C, below said annulus E, and adapted to allow said cylinder C to slide downward therein, and a stop secured to the lower end of said cylinder C and limiting the upward motion of said cylinder in said stufling box, substantially as and for the purposes described.

2. In an anchor well packer for oil or gas wells, the combination with a line of piping extending downward into the well, of a pipe coupling A screw-threaded at a and lianged at a2, a friable disk B secured in said pipe coupling A and held therein against the upward pressure of the gas or oil, a hollow cylinder C exteriorly screwthreaded at both its ends and engaging at its upper end in the threads a', the ring D provided with lips d and d2, bearing against the said liange 0,2 and and having screw threads d engaging in those at the upper end of the cylinder C; the rubber annulus E exterior to said cylinder C and engaging in said lips 0l and d2, a gas-tight stuiiing box near the lower end of said tube C, below said annulus E, and adapted to allow said cylinder C to slide downward therein and a stop secured to the lower end of said cylinder C and limiting the upward motion of said cylinder in said stuffing box, substantially as and for the purposes described.

In testimony whereof I affix my signature in presence of two witnesses.

l. N. HOADLEY. Witnesses:

J. C. MATTHEWS, J. C. WICK.