US1290127A - Fishing-tool. - Google Patents

Description

.S. S DRAKE.

FISHING TOOL.

APPLICAIION FILED MAYQ. ma.-

1,290,127, Patented, Jan. 7,1919.

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for grasping the part of nnrrnn sriarnsrarnnr orricn SAMUEL S. DRAKE, OF BOISE, IDAHO, ASSIGNOROF ONE-HALF TO RICHARD JOHNSON,

I OF BOISE, IDAHO.

risiimd roon.

Patented Jan. '7, 1919.

Application filed May 9, 1918. Serial N 0. 233,563.

To all whom it may concern:

Be it known that I, SAMUEL S. DRAKE, a citizen of the United States, residing at Boise, in the county of Ada and'State of 5 Idaho, have invented certain new and useful Improvements in Fishing-Tools, of which the following is a specification.

My invention relates to improvements'in fishingdevices and more particularly to devices used for removing broken or lost tools from oil, gas or water wells.

In drilling wells it sometimes happens 3 that the drilling string breaks or" becomes disconnected somewhere betweenthe bit head and upper end of the rope, and when this occurs it is necessary to remove the tools or parts left in the well before proceeding with the drilling.

Various devices have been proposed-for these'devicesusually comprise special tools, which are loweredin the well,'and' the construction of-which is particularly adapted ing string only. Inother words, if the joint -at one point in the string becomes disconnected, then one form of fishing tool is used the joint,-which remains in the well, while if the string breaks at the jars, for instance, then another form of fishing tool must be used.

Therefore, it has been the custom heretofore to use tools particularly designed-for catching the string at one pointonly, and as the string is liable to break -or disconnect at various places, a multiplicity of fishing tools must be-kept onhand, in order to recoventhe lost parts of the string.

' The present invention was designed with a view of eliminatingthe necessity of employing tools, which would grasp the well string atone point only, and with the idea of avoiding the expense incident to the purchase of said tools.

5 The primary object of my invention is to provide. a single tool having aset of detachable parts, which areinterchangeable,

, so thata common tool can be"used with parts particularly designed to'engage the string at various points.

. Another object of my invention is to provide such a tool with means for adapting thesame to wells of difierent diameters. j

j further object" of the invention is tofurnish a tool having intefizhangezible removing the lost parts from the well and 1 portion of any for grasping or cutting one part of the drillscrew-threaded into contact with of the spring are grasping mechanism, which the lost parts guided by means of interchangeable hooks, carried by the tool.

l/Vi'th the foregoing objects outlined and w1th other objects in view, the invention consists'in the novel features hereinafter described-, in connection with the accompany- "ingdrawingyand the said invention is fully disclosed in' the following description and claims.

Referring to the: drawing:

Figure 1 is a perspective view of myimproved'tool showing an eccentric attached thereto, and especially designed for engaging a broken'rope.

Fig. 2 is' a bottom plan view of the same.

Fig. 3 is a sideview of a different form of rope gripping eccentric."

Fig. lis a perspective view of an eccentric to be used with the tool, whenit is desiredto grasp a bit, sinker rod, or a threaded of the drilling tool parts.

a latch, which is used with is desired to grasp or catch Fig. 5 shows thetool when it one of thejars.

Fig. 6 is a perspective view of a rope-cutting attachment.

Fig. 7 is a perspective view of a modified form of tool having a Hat shank, which is" especially useful in drilling wells of small diameter, as the stock does not have to be so heavy. y

In Figs. 1 to 6 of the drawing, 1 designates the shank of my improved fishing tool, which is provided at its upper end with a part 2 adapted to be screwed into a threaded socket '(not shown) carried by av cable that is lowered into the well. The shank is provided at its lower end with arms 3 and 4, which extend at right angles to the shank, and the arm 4 has a post 5 extending substantially parallel to the arm 3. A hook 6, which may be made in different lengths and of various curvatures to accommodate 1 wells of various diameters, is secured tofthe arm '3 by a mortise afnd'tenon joint 7 and a removable pin 8. Different parts or attachments, hereinafter described, are adaptj of the rope eccentrics 9 (shown in Figs. 1

, carrying the cured. by means of any suitable fastening means, such as a cotter pin 10. The eccentric shown in Figs. 1 and 2 has an extend- 6 into contact with the shank 1. Then if the tool is lifted, the rope will swing the eccentric 9 about its pivot or post 5 until the teeth firmly bite into the rope. When this occurs, the fishing tool maybe raised and will carry the lost parts with it.

Should the string break at the bit, sinker -rods, or joints, then the eccentric 14: shown in Fig. 4 is used with the tool. This eccentric is provided with peripheral teeth 15, which extend across the circumference of the eccentric, and are adapted when the tool is lowered to engage the broken part and grasp the same when the fishing tool rope is elevated.

The attachment 16 shown in Fig. 5 is used when-thestring breaks at the jars, and in use it is placed on the post 5 and its free end 17 rests on the upper surface of the arm 3. When the tool is lowered, the arm .is raised by contacting with the upper end of the lost jar and remains in this position until the tool is lowered sulficiently to permit the latch 16 to fall through the slot of the jar. Then as the tool'is raised the latch 16 will engage the upper wall of the ar slot and raise the jar and its connected parts.

In Fig. 6, I have shown a rope-cutting attachment 18, which may be attached to the .string rope near the drilling tools, so that ,the upper end of the tools may be grasped post 5, when it is desired to cut the drilling by the eccentric 14 in a manner similar to .that described in connection with Figs. 1,

2 and 3. The part 18 has a curved cutting edge 19, which, when the tool has engaged the drilling rope at the proper point, will cut through said rope.

. In the modified form ottool, shown in Fig. 7, I have provided a flat shank 1 having a threaded portion 2; an arm 3) for hook 6 and a post 5 which extends parallel to the arm 3 All of the parts shown in Figs. 1 t 6 inclusive, are attachable t this form of tool in a manner s milar to that described in connection with Figs. 1 and 2, and need not be repeated. As

before stated, however, the tool. shown in Fig. '7 is particularly adaptable for-use in fishing for lost tools in wells f small diameter.

In practical use mv fishing tool is attached to the well drillino: cable at the end of the string of too s wh ch are added to secure the we ght. The cable is first twisted to the left several turns just above the place where the lost tools are situated, and so held with wrenches or tongs or twisters until they reach the place where you wish to take hold, and then released. When the twist comes out the hook will naturally go behind the lost tool and the curve in the hook will throw the fishing tool to its proper place. The upward pull causes the eccentric to revolve until it has the proper hold. The stronger the upward pull, the tighter it holds. It can be released at any time by lowering or jarring down with the fishing 7 string and twisting back until released and so held until raised above the lost tool. This is important because in some few instances it may happen that the lost tools are so tightly wedged that sufficient power on the surface'is not available to hoist them.

While I have shown and described the preferred embodiments of my invention, it is nevertheless to be understood that various forms, modifications and arrangements of the parts maybe made without departing from the spirit of the invention or sacrificmg any of its advantages.

What I' claim and desire to secure by Letters Patent is: v V

1. A fishing tool comprising a shank provided at its upper end with means for attaching the same to the extreme lower end of a hoisting cable, a hook carried byv the shank and extending at an angle thereto for guiding a well string into contact with the shank when said shank is turned, a post carried by the shank, and a member pivotally mounted on said post and cooperating with said hook for automatically operating on the well string when said shank is raised,

said member being connected only to said post and being automatically operative independent of any other part of the tool.

2. A fishingtool comprising a shank provided at its upper end with means for attaching the same to the extreme lower, end of a hoisting cable, a hook carried by the shank and extending at anangle thereto for guiding a well string into contact with the shank when said shank is turned, a post carried by the shank, and a member pivotally and detachably mounted on said post and cooperating with said hook for automatically operating on the well string when said shank is raised, said member being connectedonly to said post and being automatically operative independent of any other. part of the tool.

3. A fishing tool comprising a shank provided at its upper end with means for attach ng the same to ahoisting cable, a hook earned by the shank and extending at an angle'thereto for guiding a well string into contact with the shank, a post carried by the shank,- and an eccentric. pivotally mounted on said post and automatically cooperating' with the hook for grasping the Well string when the hoisting cable is raised, said eccentric being connected only to said post and being operative independent of any other part of the tool.

4:. A fishing tool comprising a shank provided at its upper end with means for attaching the same to a hoistingcable, a hook carried by the shank and extending at an angle thereto, a post extending at an angle to the shank and parallel to a portion of the hook, an eccentric pivotally mounted on said post and cooperating with said hook for automatically grasping a Well string when the hoisting cable is raised, said eccentric being connected only to said post and being automatically operative independent of any other part of the tool, and means for detachably securing the eccentric on the post.

5. A fishing tool comprising a shank provided at its upper end with a screw threaded member for attaching the same to a hoisting cable, arms carried by the lower end of said shank and extending at right angles to the shank and to each other, a hook detachably connected to one of said arms for guiding a well string into contact with said shank, a post carried by the other arm and extending parallel to the first arm, and an eccentric pivotally and detachably mounted on said post andadapted to automatically grasp the well string when the tool is raised, said eccentric being connected only to said post and being operative independent of any other part of the tool.

6. A fishing tool comprising a shank provided with a hook for guiding a Well string into contact with the shank and a pivotally mounted eccentric adapted to automaticallyclamp the Well string between the hook and eccentric when the tool is raised.

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

SAMUEL S. DRAKE.

Witnesses:

KATHRYN M. JoNEs, B. S. HOWE.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0."

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