US509394A - Packer for artesian wells - Google Patents

Description

UNITED STATES PATENT OFFICEG GEORGE PALM, OF BUTLER, PENNSYLVANIA.

PACKER FOR ARTESIAN WELLS.

SPECIFICATION forming part of Letters Patent' No. 5095394, dated November 28, 1893.

Application filed December 1 7, 1892. Serial No. &55,472. (No model.)

To all whom 't may concern: i

Be it known that I, GEORGE PALM, a resident of Butler, in the county of Butler and State of Pennsylvania, have invented a new and useful Improvement in Packers for Artesian Wells; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to oil well packing devices, and that class of oil well packers in which the expansible arms are adapted to engage with the sides of the hole and to afiord resistance to the packer so as to compress the annulus of the rubber or like packing material and so pack the well at that point.

The invention rela-tes especially to the means for supporting the expansible arms and a freeing the same at the point where the well is to be packed, and it consists essentially in providing the expansible arms with a horizontally extending hook which engages with a pin or lug upon the outer face of the casing and supports the expansible arms around the same, and which may be disengaged by turning the casing so that whenthe tubing drops through the expansible arms they will be wedged or forced against the sides of the well and hold the packer so that it is compressed by the weight of the casing. i

To enable others skilled in the art to make and use my invention, I will describe the same more fully, referring to the accompanying drawings, in which- Figure l is a longitudinal section of an oil well packer enbodying my invention. Figs. 2 and 3 are outside Views of the same, showing the position of the parts when the hook is disengaged from the pin and when the well is packed respectively.

Like letters indicate like parts in each of the Views.

I will not describe more than the general packer with which my invention is illustrated, as such packer is, generally speaking, old, the casing a carrying an enlarged portion b which presses upon the annular rubber packer c, such packer being supported below the same by the sleeve d which carries at its lower end the annular wedge e. The expansible or gripping arms f extend up from the ring g with which they are formed, the arms extending upwardly so that when held in proper place with relation to the packer, they maybe forced down into the well, scraping or contacting with the sides thereof as the packer is forced into the well, but not biting into the sides to any extent, because the arms and their supporting ring g are carried by the casing. At the lower face of the ring g is the hook 77,

which has the horizontally extending portion which fits close to the body of the casing a, and the casing a has the lug or pin Z formed thereon with which the hook h engages, the pin Z fitting into the longitudinal slot or seat m, so that the expansible or gripping arms 6 5 are carried by the tubing. When so employed, as the packer is forced down into the well, it carries with it the gripping arms f through the connection of the hook h with the pin Z and it may in this Way be forced down 70 arns, and as the casing and the cage carrying the arms are thus disengaged, the casing will descend within the cage until the wedge portione of the slecve d fits within the expausible arms f and forces them tightly against the walls of the well, the arms being thus cansed to grip the wall of the well first by their own expansive or resilient action, and then by the entrance of the wedge within the arms, and the sleeve d being then supported so that the collar or enlargement b carried by the casing will press upon the packer c and force it into close contact with the walls of the well, so as to pack the joint with the well.

In packers of this general class heretofore employed, the difiiculty has been to provide an easy and positive disengagement of the expansible arms from the casing, and yet a positive means for carrying the expansible arms when the packer is being lowered to place. By this simple device above described, oo

When the point at 75 however, these parts are provided, and a simple and 'effioient packing deviee form-ed'.

What I claim as my invention, and desre to secure by Letters Patent, is-

In oil Well packers, the combination with the casing provided with a pin, of a. cage formed of a ring carrying expansiblearms'extending up therefrom and fitting around the casing, and having at the` base of the ring a o horizontally extending look adapted to engage with the pin 011 the casing'and hold the part s together, substantiany as and for the purposes set forth.

In testimony whereof I, the said GEORGE PA M, have hereunto set my hand.

GEORGE PALM.

VVi tnesses:

WM. J. MARTIN, J. N. CooKE.

Images