US766313A - Apparatus for freeing oil-wells from oleaginous obstructions. - Google Patents

Description

PATENTED AUG 2, 1904.

J. YOAST. APPARATUS FOR PREEING OIL WELLS FROM OLBAGINOUS OBSTRUGTIONS.

APPLIGATION FILED NOV.2,1BOZ.

10 MODEL.

Patented August 9, 1904.

PATENT OFFICE.

JAMES YOAST, OF LIMA, OHIO.

APPARATUSFOR FREEING OIL-WELLS FROM OLEAGINOUS OBSTRUCTIONS.

SPECIFICATION forming part of Letters Patent No. 766,313, dated August 2, 1904.

Application filed November 2, 1903. Serial No. 179,531- (No model.)

To all whom it may concern:

Be it known that I, J AMES YOAST, a citizen of the United States, residing at Lima, in the county of Allen and State of Ohio, have invented certain new and useful Improvements in Apparatus for Freeing Oil-IVells from Oleaginous Obstructions, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification.

My invention relates to what are commonly called oil-well cookers, which are adapted to be inserted into oil-wells and lowered therein to the point in the well where the obstruction, generally in the form of paraffin, is located, and then by the use of an electric current producing heat to melt such obstruction and to permit the oil to flow freely in the well; and it has for its object the improvement and simplification of the construction of such heaters, which renders them more efficient in action and less liable to get out of order.

The novelty of my invention will be hereinafter more fully set forth, and specifically pointed out in the claims.

In the accompanying drawing, which is a central sectional elevation of my preferred form of construction, A represents a suitable casing composed of metal and provided in its lower end with a stopper or closure B, which is preferably made of cement or some other slightly absorbent material to absorb any water of condensation which might accumulate within the heater.

Centrally embedded in the stopper B is a rod O, preferably of iron, which has its axis parallel with the axis of the casing A. Surrounding this rod O is a cement or other insulatingcylinder D, which extends from nearly the top of the rod to nearly the bottom thereof, as will be seen in the drawing.

Inclosing the insulating-cylinder D is a resistance-cylinder E, which is preferably composed of compressed graphite. The resistancecylinder E is divided at its middle for the purpose of facilitating its manufacture, as the cylinder is long and would be difiicult to handle, as shown, and the two parts are suitably clamped together by a copper clampingring E, which serves also as a binding-post for one of the electric wires.

Embracing the lower end of the insulatingcylinder D and the resistance-cylinder E and making electrical connection between the resistance-cylinder E and the rod O is a metal disk G, which is secured in any suitable manner to the rod O near the stopper B, as is clearly shown, and which serves to support.

the cylinders D E in their proper places. The upper end of the cylinder E is insulated from the rod O at H, and a pair of metal washers I serve as binders for the electric wire which is connected to the ring F.

The insulator H and binding-washers I are suitably clamped in position by a nut J, screwed upon the upper end of the rod C, as will be readily understood.

Any suitable plug K is secured in the upper end of the casing A, and a metal cap L is slipped over the same and soldered in place to prevent any moisture or other substance from entering theheater, and the electric feedwires M and N pass through both the cap L and plug K and are insulated therein. The electrical current passes down the wire N and is communicated through the binding-washers I to the upper end of the resistance-cylinder E and is also communicated to the central portion of this cylinderE through the medium of the ring F, thence passing downward through the resistance-cylinder E and is communicated to the washer G, through which it passes to the rod O, thence upward through said rod to the electric wire M, thus completing the circuit, and the passage of the current through said resistance-cylinder E produces the heat necessary to clear the oil-well from its obstructions, as will be readily understood.

The method of operating my device is to first raise the pumping-pipe from the oil-well, then insert the heater, and after the well has been thoroughly cooked the heater is withdrawn and the pump-pipe reinserted in the well.

Having thus fully described my invention, I claim 1. In an oil-well heater, the combination with an air-tight casing adapted to be introtrical connections between said rod and one end of said resistance material, electrical connections between the other end of said resistance material and one terminal of the source of electrical supply, and electrical connections between said supporting-rod and the other terminal of the source of electrical supply, substantially as described.

JAMES YOAST.

Witnesses:

EDWARD PEOK, CHAs. M. PECK.

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