overshot drilling tool quotation

This drilling tool is an Over shot fishing tool. To construct this part it we manufacture in a similar fashion to the fishing spear. The over shot is precision CNC machined from hardened high alloy steel. And has a sharp internal thread profile. This fishing tool latches to the outside diameter of the broken down hole drilling tool. The hard sharpened threads are designed to latch and thread into the part.

Overshots are a key component of wireline coring systems. To retrieve the core sample, the overshot is lowered into the hole on a wire cable until it comes in contact with the spearhead point on the head assembly. Positive latching lifting dogs securely attach, and the inner tube assembly is pulled from the hole to retrieve the core. V-lock Overshots Hole Products" V-lock overshots are safe, reliable, fast, and easy to use. The automatic safety feature is designed to reduce the chance of an accidental release. When the inner tube assembly is attached and lifted, the lifting dogs automatically retract into position. No extra manual steps are required to activate the safety feature, thus reducing the potential for human error. Standard Overshots Hole Products" standard overshots feature a manual safety lock pin. Once the core filled inner tube is hoisted above the top of the drill rods the safety lock pin can be inserted through the overshot head and under the spearhead point. This will allow the operator to hoist and remove the core sample from the inner tube.

The Mills Machine Overshot is a rugged, external catch, fishing tool that is economical and simple to use. Overshots are manufactured like taper taps except they go over the O.D. of the fish. Like taper taps, overshots are stocked in a variety of sizes and standard connections so we are able to get something to you rapidly. To build an overshot from scratch takes four to six days due to the heat treat process necessary to harden the teeth. It is speedier to build a sub to fit a stocked overshot and match your needs than to build the entire product. We can build the overshot with oversize guides to more easily catch the fish or with a wall hook to snag behind a fish leaning against the drill hole wall. Your Mills sales representative will work with you to get the fastest solution to your problem at the lowest cost. The carbonized threads on overshots are extremely hard and brittle. Be extra careful to avoid impact. In use, slowly lower the tool down the hole until the fish is engaged. Then slowly rotate the tool while applying some down pressure. Mark the drill rod to tell how far into the fish you have penetrated. Overshots can be reworked by annealing, re-threading the overshot and then re-heat treating the re-threaded area. We will quote you pricing as necessary.

A wide variety of overshot fishing tool options are available to you, such as swivel, fishing plier and spool.You can also choose from ocean boat fishing, lake and river overshot fishing tool,

A wide variety of overshot fishing tools options are available to you, such as swivel, fishing plier and spool.You can also choose from ocean boat fishing, lake and river overshot fishing tools,

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Tianhe Oil Group Co. Ltd. is a global group. We are specialized in the production of drilling tools, including R&D, production, selling, leasing, maintenance and services. Tianhe has 5 main businesses spread across the globe in more than 50 countries in the world.

You are viewing Bowen or Logan Overshots for sale by Pickett Oilfield, LLC. We have an extensive range of good used or rebuilt Overshots along with the accessories. Call us for your fishing tool needs. For more information contact us by phone at sales@pickettoilfield.com.

PickettOilfield.com offers prospective buyers an extensive selection of quality new, used, and refurbished Oilfield Equipment at competitive prices, including Overshots.

Overshots are a tool used on the downhole process during the fishing operations. It engages the tube or tool on the outside surface. A Grapple or other piece of equipment that is similar attaches onto the overshot and grabs the fish.

The slip overshot is an unreleased tool designed to externally engage a fish .It not only can engage every kinds of oil tube, drill pipe, weight rod, long plumb but also can reverse the stuck pipe string by giving torque to the stuck pipe string

Drilling equipment that is lost or malfunctions downhole causes costly time delays. Thankfully, quality fishing tools often allow for a successful and speedy recovery of equipment. The type of fishing tool also has an effect on the future usability of the stuck or lost equipment. But the nature of the job is that fishing tools get beat up. With every effort to preserve your drilling equipment investment, Hardy Fabrication re-fabricates and also manufacturers fishing tools for every type of retrieval process:

Inside grappling devices (spears) made or re-made by Hardy have a precisely-threaded shaft for accurate attachment to the missing tool to reel it back to the surface.

Outside grappling devices (overshots) surround the drilling tool with minimal invasion to preserve the tool during retrieval. They are also equipped with devices to remove surrounding material that may be restricting the tool in the wellbore.

We specialize in carbide for mills, shoes, & wipstock components helping you meet your goal of preservation and timely retrieval of tools. Working with Hardy Fabrication saves you time and money for successful completion of the project.

David L. Farley ATTORNEY United Statesv Patent O RELEASING OVERSHOT David L. Farley, Duncan, Okla., assigner to Halliburton Company, a corporation of Delaware Filed Mar. 14, 1958, Ser. No. 721,500

1 Claim. (Cl. 294-4102) This invention relates to an oil well device and more particularly to what is known as an overshot for removing objects Ifrom oil wells in a fishing operation.

Overshots are well-known devices for retrieving objects from oil wells. Ordinarily, such overshots are lowered into an oil well on either a wire line or on tubing or drill pipe and surround and latch on to the object or fish to be removed, the grapple having spring fingers of some sort to assist in making the coupling.

The overshot `of the present invention has similar mechanisms, but it is especially designed to release from the fish when desired, as in the case where the fish is stuck and cannot be removed and it is necessary to remove the overshot fro-rn the well without pulling the fish.

The overshot of the present invention is composed basically of a locking spring and a releasing mechanism. The locking spring consists of a cylindrical part split into several sections which act as fingers. When the fingers are spread over the neck of the fish, the inner shoulders of the fingers normally hook below the top of the fishing neck so that when upward force is exerted on the overshot, this force is transferred to the fish. The overshot can be released by jarring downwardly upon the locking spring and the housing which contains it. Within the housing there is la releasing sleeve held in inactive position `during normal operation of the tool, and provided with a snap ring and two shear pins. Downward jarring shears these pinsso that the housing can then slide downwardly and cause the snap ring to secure the releasing sleeve in -a higher position in the housing. Then, when an upward yforce is exerted on the overshot, the releasing sleeve comes in contact with the lower end of the locking spring, thus, spreadingy the fingers and allo-wing the overshot to pull off from the fishing neck.

It will -thus be seen that an object of the invention is to provide a releasing overshot which can be lowered into a .well in such a condition that it will serve as a grapple and impart upward pull or upward jarring action upon a fish but which may be caused to releasefrom the fish upon downward jar being delivered to it.

Figure 2 is a view in vertical quarter cross section of the releasing overshot of Figure l, the view illustrating the position of the parts when the overshot is first brought into grapple posit-ion with a fish; v

Figure 4 is a view in vertical `cross section of the retrievable overshot similarto that of Figures 2 and 3 but illustrating the position of the parts after a downward ICC jarring blow has been delivered to shear the pins but before the fingers of the locking spring have been disengaged from the leek of the fish; and

Figure 5 is a view of the releasing overshot in vertical quarter cross section similar to Figures 2, 3, and 4 but illustrating the positionvof `the parts after the overshot is released from the neck of the fish.

Referring to the drawing in detail and first to the general assembly of Figure 1it will be seen that a cable 10 is there illustrated as supporting a conventional twoway jar 11 which is, in turn, connected to a releasing overshot 12 connected to a fishing neck L13 of a fish 14.

The novelty of the present invention resides in the general assembly illustrated and more particularly in the details of construction of the releasing overshot which is contained within the housing 12.

Figures 2, 3, 4, and 5 are all similar and illustrate the sequence of operation of the releasing overshot as well as the details of construction of the various parts.

There are two shear pins 19 employed in the overshot, these "being fitted into suitable sockets in the housing 12, as illustrated in Figures 2 and 3, and arranged 180 degrees apart. For purposes of assembly, the sockets for the pins 19 may be provided with externally removable caps, -but these have not been illustrated in the drawing for reasons of clarity.

There is also provided in the overshot assembly a split snap ring 20. This is mounted in a groove on the releasing sleeve 26 and serves to lock the sleeve in its upper position in the housing 12, as described hereinafter, once the pins 19 have sheared. As shown in Figures 2 and 3, this snap ring 20 is held compressed by the lower portion of the housing 12. When it is raised sufiiciently within the housing 12, it snaps outwardly into the groove 18, as illustrated in Figures 4 and 5.

For normal operation in making connection with the head 21, there is a locking spring consisting of a cylinder of spring steel having a ring portion 23 and depending fingers 24 terminating at the lower end in catches 25. Thus, when the overshot "is lowered into the well, the

The important -feature of the invention resides in the provision of mechanism for spreading the fingers 24 outwardly and holding them in an outwardly or expanded position should it be desired to release the overshot from the fish. To this end a releasing sleeve 26 is mounted in the lower portion of the housing 12 and held in place therein by the shear pins 19. So long as the pins 19 are not sheared, the releasing sleeve is held stationary with respect to the sleeve 12 and occupies the inactive posit-ionv shown in Figures 2 and3 with respect thereto. When the "pins 19 are sheared,.the sleeve 26 can then move upwardly with respect to the housing 12 and occupy thepositions of Figures 4 and 5, the split ring 2t) serving to limit the amount of travel of the sleeve 26 with respect to the housing 12 as the ring 20 enters the groove 1S.

With the above mechanism, it will be clear that the overshot mechanism, consisting of the housing 12 and the parts mounted in it, may be lowered into a well until the locking spring engages and grapples a suitable shing neck, such as illustrated in Figure 2. In normal operation an upward pull may then be taken on housing 12, and the upward pull may be transmitted by the land 15 to the locking ring and iish. Any number of upward jar blows can then be delivered by the jar 11 to the fish through the spring lingers 24 and catches 25.

Assume, however, that the fish cannot be moved or that for any other reason it is desired to release the overshot from the fish, the upward pull is discontinued and a downward jar blow is delivered b v the jar 11 to the housing 12. Such downward blow will cause the parts to take the position shown in Figure 4. 1n this position, the sleeve 26 is resting upon the sh and the downward stress of the jar blows has been taken by the jar pins 19 so that they have sheared. As soon as the pins 19 shear, there can be relative movement between the housing 12 and the sleeve 26 so that the ring 2G snaps into the groove 18 and holds the sleeve 26 in its upper position in the housing 12. After this has happened, upward pull upon the overshot will cause the cam surface 27 to engage the catches and spread the spring iingers 25a outwardly so that the catches 25 can be moved upwardly past the head 21 and the overshot removed from the ,well without engagement with the tish 13.

A releasing overshot for use in removing a fish from a well or the like, comprising a cylindrical housing, a locking spring within said housing and having a sh engaging catch depending therefrom, a releasing sleeve Within said housing beneath said catch, said catch and said releasing sleeve having opposed surfaces eifective to positively cam said catch to a fish releasing position upon movement of said releasing sleeve relatively toward said catch, releasable retaining means for holding said releasing sleeve in a lower inoperative position in said housing and out ot" engagement with said catch, said retaining means being releasable upon forcible downward movement of said housing relative to said releasing sleeve to position said releasing sleeve in an upper operative position in said housing, and a latch between said releasing sleeve and said housing for holding said releasing sleeve in said upper position in said housing after said forcible upward movement therein, said opposed surfaces engaging in said upper position of said releasing sleeve to positively cam said catch to a sh releasing position whereby the overshot maybe removed from the well without the tish.