US1816991A - Fishing tool - Google Patents

Description

Aug. 4, 1931. c. VAN AMBURGH ET AL 1,816,991

FISHING TOOL Filed 001:. 31, 1927 f 37 INVENTORSf Z9 Char/es L. M01 Ambu7/1;

nmes R. Ru se Y 9% ATT( RNEYS.

Patented Aug. 4, 1931 UNITED STATES,

PATENT OFFICE CHARLES L. VAN AMBURGH AND JAMES R. RUSSELL, OI? LONG BEACH, CALIFORNIA,

SAID VAN AMBUR-GH ASSIGNOR T FRANK I. KAUFFMAN, OF LONG BEACH, CALI- FORNIA FISHING TOOL Application filed October 31, 1927. Serial No. 229,991.

Our invention relates to fishing tools adapted for use in connection with the drilling of oil wells or the like, and it refers particula'rly-to a tool which is adapted to close over a part so as to form a receptacle there for in order that the part may besuccessfully fished out of a well hole.

.One object of the invention is to provide a tool of this character with a pipe adapted to penetrate rockor other material, andv operatively to connect with the pipe, so as to be raised or lowered therein, a basket, which is normally open at its bottom, and also to provide the tool with means. for closing the bottom of the basket, so that, when the basket is lifted out of the well hole, the required part is fished out therewith. I

Another object of the invention is to construct atool of this character so that, in the process of placing the tool over the part to be fished out of a well hole, unnecessary strains are eliminated and the tool cannot be damaged, thus insuring a successful operation of the tool.

A further object of the invention is to construct a tool of this character so that the tool may be operated quickly and easily.

A still further object of the invention is to construct a tool of this character so that it may be easily assembled or disassembled and that the tool may be manufactured at a low cost;

Other objects will be understood from the following detailed description,having reference to the accompanying drawings, in which Figure 1 is a sectional view of a portion of ground and aview of a casing, shown in longitudinal mid-section as sunk into the well hole in the ground, and an elevation, partly broken and partly in longitudinal midsection of a preferred embodiment of the fishing tool of our invention, the view showing the basket in the process of penetrating the ground material within the wash-over pipe but as not yet having reached the annular incline formed in the shoe of the wash-over pipe, and also certain parts carried on top of the ground material forced upward by the, drilling operation of the shoe and being in position to be fished out of the well hole;

Figure 2 is a View, similar to Figure 1, but showing the teeth in the bottom of the basket as being engaged by the annular incline in the shoe of the wash-over pipe, thereby closing the bottom of the basket preparatory to the lifting of the basket from the well hole;

Figure 3 is a sectional view of a portion of the wash-over pipe, a portion of the drill pipe and a portion of the basket, and shows modified forms of the heads, respectively connected with the drill pipe and the basket;

Figure 4 is an elevation of portions of the wash-over pipe, a portion of the drill pipe and portions of the basket, the view being partly broken and partly in section and showing the basket directly connected with the drill pipe; I

Figure 5 is an enlarged sectional view of a portion of the wash-over pipe, a portion of the drill pipe, the heads, a portion of the basket, and the connecting means between the heads, as shown in Figure 1, the view clearly illustrating the circulation means through the heads; and

Figure 6 is an enlarged plan of the basket, with the teeth thereof in their closed positions, and of the shoe for the wash-over pipe, the view being taken in a plane indicated by the line 6-6 of Figure 2.

The tool of our invention is in the drawings indicated as a whole by the numeral 1. This tool comprises a core forming bit including wash-over pipe 2, which is adapted to operate freely within a casing 3 and has at its lower end a shoe 4, provided with cutting teeth 5, so that, when the washover pipe is rotated, the shoe of the latter may penetrate rock or other 'material 6, in the well hole 7 of which the casing has been sunk. In connection with the wash portion of the wash-over pipe and'ls re-' movably "attached thereto in any suitable manner so as to be virtually integral therewith, and a suitable packing '10 serves to prevent liquid from flowing between the drill pipe and the tubular member while at the same time it allowsthe drill pipe to move freely within the tubular member.- The drill pipeis in its wall provided with akey 11, which is adapted to slide in a slot 12, which is formed longitudinally in the wall of the tubular member and is widened and offset at its upper end, as shown at 13, so that, when the keyrests inthe offset portion, as shown in Figure 1, the drill pipe is held in a raised position relative to the wash-over pipe.

The drill pipe 9 has fixed thereto a drivinghead 14 by any suitable means. For example, the lower end of the drill pipe may be screwed into the driving head,.as is clearly shown in Figure 5 at 15. In the driving head is centrally formed an opening 16, adapted to receive therein a pipe 17 which also extends through an opening 18 formed centrally in a driven head 19, and any suitable stop means, which, in this instance, are shown as collars 20 and'21 and are respectively secured to the ends of the pipe. Openings 22 are provided for the purpose of-allowing circulation through the driving head, and an annular space 23 is for the same purpose provided between the basket 8 and.the wash-over pipe 2. On its underside the driving provided with ratchet t eeth 2 l, which are adapted to engage ratchet teeth 25 formed on the upper side of the driven head, so-

that, when the ratchet teeth of the driving head engage the ratchetteeth of the driven head and when the-drill pipe is rotated in a clockwise direction, as viewed from the top of the wash-over pipe, the driven head may also be rotated in the same direction,

but, when the drill pipe is rotated in the opposite direction, the driven head is irresponsive to the rotative movement of the drill pipe.

In the preferred form of our invention, the basket 8 is at its upper end suitably head is secured to the driven head 19, for instance, by a thread connection 26, so that, when the driven head is rotated in the aforementioned clockwise direction, the basket is also rotated in the same direction. At its lower end or bottom,the basket is provided with teeth 27, each of: which, as viewed relative to the rotative movement. of the basket, preferably has its forward edge inclined from the base of the tooth, as shown at 28. An annular incline. 29, which is adapted to engage the teeth 27 is formed on the inside of the shoe 4 of the wash-over pipe near to the bottom thereof, so that thereby a means for closing the basket is provided.

In order to lower thefishing tool 1 tu the required depth in a well hole 7, the

drill pipe is connected with thenecessary lengths of similar pipe by the usual tool joints and with a suitable drilling rig in the usual manner, but, since such connections are well known in the art and are not parts of our invention, an illustration thereof is omitted as superfluous.

Although the fishing tool 1, illustrated in Figures 1, 2 and 5, is especially adapted for use in connection with drilling rigs of the rotary-type, it should be understood that our invention is not' limited thereto, but may also be used in connection with drilling rigs of the cable type. In connection with the latter type of drilling rigs, however, the driving headand the driven head are preferably slightly-modified, as shown in Figure 3. The arrangement of the drill pipe 9 within the tubular member 10, which lines the inside of the top portion of the wash-over pipe 2, and the arrangement of the pipe 17, with the stop collars 20' and 21 thereon,,are in this instance the same as already described in regard to Figures 1, 2 and 5, with the exception that the driving head 30 has no teeth' on its under side 14, the .drivinghead 30 has circulation open- I ings 34 therein, while an annular space 35, j

corresponding with the'sjpace 23, is formed pipe 2.

ing tool so" that the basket'8 is loosely conbetween the basket 8 and the wash-over nected with the drill pipe v9 through the" pipe 17 which has the stop collars 20 and 21 thereon, and to operate the basket'by means of the action of a driving head upon a driven head, we may in someinstances modify the construction so as to connect the basket directly with the drill pipe. Sucha construction is shown in Figure 4, in which the basket is at its upper end screwed upon the lower end of a coupling has therein the annular incline 29 and the cutting teeth at its bottom.

When it is desired to fish lost parts or objects, indicated at 38 in Figures 1 and'2, out of the well hole 7, the fishing tool 1 is assembled, as shown, with the key 11 in ofiset portion 13 of the slot 12, as shown in Figure 1, and connected with the necessary lengths of pipe so that, when the tool is lowered in the casing 3, the offset portion carries the weight of the pipes and that thus the teeth 5 on the shoe 4 of the wash-over pipe may be adapted to cut into the formation of rock or other material 6. The drilling rig is then operated so that the washover pipe penetrates the material 6 and causes the core of the material to rise within the wash-over pipe and to enter the open bottom of the basket. With the teeth 27 of the basket only a short distance from the "annular incline 29, the drill pipe is thereafter rotated until the key 11 registers with the main portion of the slot 12. In the preferred form of fishing tool, the drill pipe is then lowered until the ratchet teeth 24: on the driving head 14 contact the ratchet teeth 25 on the driven head 19, as shown in Figure 2, and a sufficient Weight is applied in order to cause the teeth 27, when they come into engagement with the annular incline 29, to be bent inward and thus to close the bottom of the basket, as shown in Figures 2 and 6. If it is found that the formation of the material 6 is sufficiently hard to withstand the weight of the basket, so that the teeth 27 do not readily penetrate the material and reach the incline 29, the

basket may be closed by lifting the drill pipe at little and then allowing it to drop so as to cause the driving head to strike the driven head, or, preferably, a sufiicient weight is applied and the drill pipe is rotated backward, so that the ratchet teeth 24 slide upon the ratchet teeth 25 and thus first cause the driving head to rise and then allow it to drop suddenly upon the driven head, thereby producing a jar or hammer action, which will effect the penetration of the material and result in the closing of the basket without causing damage to the washover shoe. The closing of the basket may be hastened, if the drill pipe is rotated back and forth, as such action particularly prevents clogging of the material between the teeth and thus efficiently aids in the penetrating process and also as, during the forward rotation of the basket, the inclined edges 28 of the teeth 27 serve as means for assisting the annular incline 29 in bending the teeth inward. As soon as the basket is closed, the fishing tool is lifted out of the casing, and the parts or objects 38, which are carried with the material 6 in the basket, are thus recovered.

It is understood that a suitable pumping means, not shown, is employed in connection with the operation of the fishing tool in order to force water through and around the drill pipe, through the pipe connection 17, the respective openings 22 and 23 in the heads, the wash-over pipe and the casing and around the latter to the top of the well hole 7, whence the water is led in the usual manner to the sump hole and carries with it some of the cuttings from the material 6 to any suitable collecting means.

The operation of the fishing tool shown in Figure 3 is similar to the operation of the fishing tool already described, with the difference that the drill pipe must be lifted independently of any rotary movement thereof in order that the driving head 30 .may deliver the necessary hammer stroke upon the driven head 33, since in this instance the driving head cannot be caused to rise above the driven head by any rotary movement of the drill pipe.

With reference to the construction shown in Figure 4, it should be noted that since the basket is connected directly with the .drill pipe, the combined weight of the pipe and the basket, aided by the rotative movement of the latter, is particularly adapted to enable the teeth 27 quickly to penetrate the formation of the material 6, so that the teeth may speedily reach the incline 29 and that thus the bottom of the basket may be closed in a minimum of time.

It is clear from the foregoing that the shoe 4 on the washover pipe 2, during .the drilling operation in the casing 3 prepares the formation of the material 6 for the approach of the basket to the tools, or other objects 38, or parts thereof, which have been lost in the well hole 7 and that the construction of our fishing tool 1 otherwise is such that the tool may be quickly and efficiently operated in order to facilitate the recovery of the lost objects, while at the same time the wash-over pipe and the shoe amply protect the basket from injury during the fishing operation.

We claim as our invention:

1. In a tool of the character described, a pipeadapted to penetrate rock or other material'; a basket normally open at its bottom and adapted to be operatively connected with the pipe and to be raised or lowered therein; a drill pipe operatively connected with the basket and having a key thereon; means in the first-mentioned pipe .for engaging the key so as to hold the basket in a raised position within said pipe; means for allowing the key to slide in the first-mentioned pipe so that the basket may be raised or lowered therein; and means for closing the bottom of the basket when the pipe adapted to penetrate rock or other material and provided in its wall with a longitudinal slot which is widened and offset at its upper end; a basket normally open at its bottom and adapted to be operatively connected with the pipe and to be raised or lowered therein; a drill pipe operatively connected with the basket and having thereon a key which is adapted to slide in the longitudinal slot, so as to allow the basket to be raised or lowered in the first-mentioned pipe, or adapted to rest in, the offset of the slot so as to hold the basket in a raised position within said pipe; and means for closing the bottom of the basket when the first-mentioned pipe'has penetrated the material to a predetermined depth and when the basket is lowered in the material, as, and for the purpose, set forth.

3. In a tool of the character described, a pipe adapted to penetrate rock or other material; a basket movably mounted in the pipe, the basket being normally open at its bottom and provided at its top with a driven head; a drill pipe'movably eiztending into the first-mentioned pipe; a driving head secured to the drill pipe so as to be movable therewith above the driven head in the firstmentioned pipe; means for connecting the heads in a movable relation to each other so that by the operation of the drill pipe the ered in the material, as, and for the purpose, set forth. I

4. In a tool of the character escribed, a pipe adapted to p'enetraterock or other material; a basket movably mounted in the pipe and being normally open at its bottom; a drivenhead secured at the top of. the basket and provided with circulation means therethrough; a drill pipe movably extending into the first-mentioned pipe; a

mentioned pipe; stop means for limiting.

the movement of the heads from each other and for allowing the basket to be lifted by the drill pipe, the head-connecting means and sto means being constructed so as to allow clrculation therethrough; and means for closing the bottoln of the basket when the first-mentioned pipe has penetrated the material to a predetermined depth and when the basket is lowered in the material; as, and for the purpose, set forth.

5. In a tool of the character described, a pipe adapted to penetrate rock or other material; a basket movably mounted in the pipe and being normally open at its bottom and provided at its top with a driven head; a drill pipe movably extending into the firstmentioned pipe; a driving head secured to thedrill pipe so as to be movable therewith above the driven head in the first-mentioned pipe and to be adapted to contact the driven head, the heads being so formed as to cause a downward motion of the driven head when the driving head contacts therewith; means for connecting the heads in a movable relation to each other, so that, when the driven head is moved downward, the basket is adapted to penetrate the material in the first-mentioned pipe; stop means for limiting the movement of the heads from each other and for allowing the basket to be lifted by the drill pipe; and means for closing the bottomof the basket when the first-mentioned pipe has penetrated thema- .terial to a predetermined depth and when the basket is lowered in the material, as, and for the purpose, set-forth.

6. In a tool of the character described, a pipe adapted to penetrate rock or other material; a basket movably mounted in the pipe and being normally open at its bottom and provided at its top with a driven head; a drill pipe movably extending into the first mentioned pipe; a driving head secured to the drill pipe so as to be movable therewith above the driven head in the first-mentioned pipe'and to be adapted to contact the driven head, the headsbeing so formed as to cause the driven head to move downward and to rotate in one direction when the driving head contacts therewith and is rotated in the same direction, but not to cause rotation of the driven head when the driving 7 head is rotated in the opposite direction;

means for connecting the heads in a mov able relation to each other, so that, when the driven head is moved downward and is rotated in the first-mentioned direction, the basket is adapted to penetrate the material in the first-mentioned pipe; stop means for limiting the movement of the heads from each other and for allowing the basket to be lifted by the drill pipe; and means for closing the bottom of the basket when the first-mentioned pipe has penetrated the material to a predetermined depth and when the basket is lowered in the material, as, and for the purpose, set forth.

7. In a tool of the character described, a core forming bit, a normally open basket mounted in the bit, means for producing a hammering action upon the basket in re- 'sponse to rotation of a drill pipe, to force the basket downwardly into the core formed by the bit, and means for closing the basket when the latter has penetrated the core. I 8. In a tool of the'character described, a core forming bit, a normally open basket mounted in the bit, having cutting means f thereon, means for rotating the basket to cause the cutting means to penetrate the core formed by the bit, or to drive the basket downwardly to force the cutting means thereof into the core according as a drill pipe is rotated in one direction or the other, and means forclosing the basket when the latter has penetrated the core.

9. In a tool of the character described, a core forming bit, a normally open basket mounted in the-bit, having cutting means nection to a drill pipe, a driven head connected to the basket, means on said head coacting to rotate the basket and cause the cutting means thereon to penetrate the core formed by the bit, or to produce a hammering action upon the basket to drive the cutting means thereof into the core according as the drill pipe is rotated in one direction or the other, and means for closing the basket when the latter has penetrated the core.

10. In a tool of the character described, a core forming bit, a normally open basket mounted in the bit, having cutting means thereon, means for rotating the basket to cause the cutting means to penetrate the core formed by the bit, or to drive the basket downwardly to force the cutting means thereof into the core according as a drill pipe is rotated in one direction or the other, means for closing the basket when the latter has penetrated the core, and means for operatively connecting said bit to the drill pipe for rotation by the latter, yet rendering the basket capable of being rotated independently of said bit.

11. In a tool of the character described, a. core forming bit, a normally open basket thereon, a driving head adapted for conmounted in the bit, having cutting means

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