CN206190255U - Fishing tool - Google Patents

Abstract

The utility model relates to an oil well drilling and production technology field especially relates to a fishing tool, including fishing head, sheath, spring and base, fishing head's middle part is hollow form, and encircle to have in week and collude the claw, the sheath passes through the spring with the base is connected, the middle part of base has the card post, and enhances practicability, ka tai with collude the claw cooperation. The simple operation of this device, safe and reliable can install on the well casing, and during the salvage, fishing head promotes the sheath and moves down, sheath pressure spring, during colluding the claw and collude the step on the base on fishing head, the sheath shifts up under the effect of spring force. The claw is colluded in the free accommodation, realizes salvaging and connects safe and reliable.

Description

Fishing tool

Technical field

The utility model is related to oilfield drilling and production technology field, more particularly to a kind of fishing tool.

Background technology

In the recovery process of oil, oil pipe will be linked together by box cupling one by one, so as to extend into oil well, this Sample oil pipe is hanging in oil well all the time, and because the length of oil pipe is long, the oil pipe in top will undertake the institute of bottom oil pipe There is weight, the manufacturing deficiency of box cupling, metal fatigue easily makes middle and upper reaches oil pipe thread off, bottom oil pipe is dropped in well, so as to make Accident in Cheng Jing.Because the situation in well is more complicated, customization fishing tool is also needed to carry out oil pipe salvaging sometimes, so as to cause to beat Drag for costly, salvage efficiency low.

Utility model content

The purpose of this utility model is to overcome the shortcomings of above-mentioned technology, and provides a kind of fishing tool, is easy to oil pipe to beat Drag for.

The utility model to achieve the above object, using following technical scheme：A kind of fishing tool, it is characterised in that：Bag Fishing head, sheath, spring and base are included, the middle part of the fishing head is hollow shape, is passed through with pawl, the sheath is hooked in ring week The spring is connected with the base, and the middle part of the base carries card column, carries chuck, the chuck in the ring week of the card column Coordinate with the hook pawl.

Preferably, the top of the card column is in coniform.

Preferably, it is provided with inclined seam in the ring week of the sheath.

The beneficial effects of the utility model are:Present apparatus simple operation, it is safe and reliable, may be mounted on well casing, salvage When, fishing head promotes sheath to move down, sheath holddown spring, when the hook pawl hooks on fishing head enter the step on base, shield Cover under spring force, upper shifting.Hook pawl is encased, realizes salvaging connection, it is safe and reliable.

Brief description of the drawings

Fig. 1 is the structural representation of fishing head in the utility model；

Fig. 2 is the structural representation of sheath in the utility model；

Fig. 3 is working state schematic representation of the present utility model.

Specific embodiment

Below in conjunction with the accompanying drawings and preferred embodiment describes specific embodiment of the present utility model in detail.In the utility model Description in, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertical ", " water It is flat ", " top ", " bottom " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only It is to be described with simplified for the ease of the description present invention, must be with specific rather than the device or element for indicating or imply meaning Orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.

As depicted in figs. 1 and 2, a kind of fishing tool, including fishing head 1, sheath 2, spring 3 and base 4, the salvaging The middle part of head is hollow shape, is connected with the base by the spring with pawl 11, the sheath is hooked in ring week, the base Middle part carries card column 41, coordinates with chuck 42, the chuck and the hook pawl in the ring week of the card column.The top of the card column In coniform.The ring week of the sheath is provided with inclined seam 21.

Present apparatus simple operation, it is safe and reliable, may be mounted on well casing, during salvaging, fishing head promotes sheath to moving down It is dynamic, sheath holddown spring, when the hook pawl hooks on fishing head enter the step on base, sheath under spring force, upper shifting. Hook pawl is encased, realizes salvaging connection, it is safe and reliable.

The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and Retouching also should be regarded as protection domain of the present utility model.

Claims (3)

1. a kind of fishing tool, it is characterised in that：Including fishing head, sheath, spring and base, the middle part of the fishing head is Hollow shape, ring week is connected by the spring with pawl, the sheath is hooked with the base, and the middle part of the base is with card Post, the ring week of the card column coordinates with chuck, the chuck and the hook pawl.

2. fishing tool according to claim 1, it is characterised in that：The top of the card column is in coniform.

3. fishing tool according to claim 1, it is characterised in that：The ring week of the sheath is provided with inclined seam.