US1096740A - Well-drilling appliance. - Google Patents

Description

I. E. MONROE. WELL DRILLING APPLIANCE.

APPLICATION FILED MAY 28, 1913.

Patented May 12, 1914.

l vgimeooco ISAAC E. MONROE, 0F PLEASANTVILLE, PENNSYLVANIA.

WELL-DRILLING APPLIANCE.

Specification of Letters Patent.

Patented May 12, 1914.

Application filed May 28, 1913. Serial No. 770,468.

To all whom it may concern:

Be it known that I, ISAAC E. MONROE, a citizen of the United States of America, residing at Pleasantville, in the county of Venango and State of-Pennsylvania, have invented new and useful Improvements in \Vcll-Drilling Appliances, of which the following is a specification.

This invention relates to improvements in drilling apparatus and has particular application to an appliance for apparatus used in drilling oil, gas, Artesian and other deep wells.

In carrying out the present invention, it is my purpose to provide an appliance for use in deep well drilling apparatus and which will function not only as a drilling stem but will be constructed in such manner that it may be employed for jarring purposes in the event of the bit, spud or other drilling tool becoming stuck, thus eliminating the employment of auxiliary tools for jarring.

It is also my purpose to provide an appliance of the class described which will be constructed in such manner as to present, in effect, a rigid and integral structure and wherein the component parts thereof will be movable relatively to one another and held under tension so that a resilient connection between the cable and drilling tools will be established and whereby a jarring action may be set up when the drilling tool becomes stuck.

Furthermore, I aim to provide an appliance of the type set forth which will embrace the desired features of simplicity, efiiciency, durability and strength; one which may be manufactured and installed at a minimum expense and one which may be readily applied toany type of drillinga paratus without necessitatin elaborate cianges in the structure of such apparatus.

WVith the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter set forth in and falling within the scope of the claim.

In the accompanying drawing; Figure'l is a view in side elevation of an appliance constructed in accordance with the presentinvention. Fig. 2 is avertical sectional view through the same, parts being shown in elevation. Fig. 3 is a cross sectional view on the line 33 of Fig. 1.

Referring now to the accompanying drawing in detail, the numeral 1 designates :1

rope or cable socket designed to receive one end of the drilling cable, the latter being conn cted to the walking beam or other operating mechanism in any well known or preferred manner. This socket 1 has the lower end thereof enlarged to form a head 2 and surroundin such head and appropriately fastened t ereto is one extremity of an elongated tube or sleeve 3 depen ing from the head 2 and having threaded into the lower end thereof a nut 4 formed with a vertical bore or passage 5 alinin axially with the tube 3 and opening into tie latter. Fixed to the end of the nut 4 within the tube or sleeve 3 and extending upwardly within said sleeve or tube is a second relatively short sleeve or tube 6 having the upper open end thereof coaxial with the passage 5 in the nut l. Arranged centrally within the tube 3 and passed through the passage 5 in the nut L is a stem 8 having the upper extremity thereof terminating in proximity to the head 2 of the socket 1 and equipped with a cylindrical block 9, the lower extremity of the stem 8 being equipped with a core head 10 formed with the usual socket to receive the bit, spud or other drilling tool. Surrounding the stem 8 within the sleeves or tubes 8 and 6 is a coiled expansion spring 11 having one end thereof abutting the block 9 and the opposite extremity resting upon the nut 4 within the tube 6.

From the foregoing description taken in connection with the accompanying drawing, the construction, mode of operation and manner ofemploying my invention will be readily apparent. In the ordinary operation of drillin a pull on the cable fastened within the soc ct 1 will cause the nut 4 to place the spring 11 under tension thereby elevatin the stem 8 and the spud or bit con-- nected t iereto in a flexible manner. On the down stroke, when the nut 4 has reached its lowermost point, the weight or inertia of the drilling tools carried by the stem 8 will cause the block 9 to compress the spring 11 and so produce a resilient stroke. The action of the spring may be regulated by varying the rapidity of movement of the device and by lettin out or taking up the cable relatively to the bottom of the hole being drilled.

Should the spud or hit become stuck, taking up the cable will cause the nut t to compress the spring 11 in order that the upper extremity of the tube 6 Will strike the block 9 and thus produce an upward jar, the force of the blow thus delivered being determined by the tension of the cable or the speed of the evolutions of the walkin beam or kindred appliance. If it be deslred to effect a downward jar, the cable is let out so as to cause the nut 41: to slide downwardly along the stem 8 until the head 2 strikes the block 9.

It will be noted that the inner tube 6 eliminates the possibility of the coils of the compression spring 11 coming together suddenly and thereby mutilating the spring, the tube, owing to its length, striking the block 9 before the coils of the compression spring have engaged one another so as to completely close the spring.

While I have herein shown and. describedone preferred form of my invention by way of illustration, I wish it to be understood that I do not limit or confine myself to the precise details of construction herein described and delineated, as modification and variation may be made Within the scope of the claim without departing from the spirit of the invention.

I claim:

A drilling appliance comprising a rope socket, a tube depending from said socket, a nut threaded into the lower end of said tube, a second tube carried by said nut and disposed within the first-mentioned tube, a stem passed through said nut and tubes, at

block upon the inner end of said stem, an

expansion spring encircling said stem between said block and nut, and a core head carried by the lower end of said stem.

In testimony whereof I aI'IiX my signature in presence of two witnesses.

ISAAC E. MONROE. Witnesses:

R. L. MonRoE, C. E. HoovLER.

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