CN212671638U

CN212671638U - Trial production fishing tool

Info

Publication number: CN212671638U
Application number: CN202021408953.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhengxian Technology Co ltd
Current assignee: HUAYUN LONGTENG MACHINERY MANUFACTURING CO.,LTD.
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-03-09
Anticipated expiration: 2030-07-16

Abstract

The utility model provides a pilot production fishing tool. Relates to the technical field of oil field trial production tools. The upper joint lower part is fixedly connected with a sleeve milling barrel, the bottom of the sleeve milling barrel is provided with a sawtooth structure, an upper joint inner hole is fixedly connected with a filter screen, the lower part of the filter screen is provided with a strong magnetic ring, the lower part of the strong magnetic ring is provided with an elastic ring, the lower part of the filter screen is of a conical pointed structure, and the pipe wall of the sleeve milling barrel is provided with sand discharge holes. The utility model discloses following beneficial effect has: set up the sawtooth structure and be used for the cover to mill the grit, make the junk exposes, and the strong magnetic ring is with the magnetic adsorption junk, sets up the elastic ring, does not have magnetic attraction at the junk, and the elastic ring keeps off the junk in a milling sleeve, and the backwash gets into the sand grain of a milling sleeve and mills a section of thick bamboo outside through the hole discharge sand discharge cover, has reduced filter screen blocking's possibility to plug up the endless passageway of backwash well, can guarantee to salvage the effect, and the surface sintering of sawtooth has tungsten carbide coating to improve the surface hardness and the wearability of sawtooth, improves life.

Description

Trial production fishing tool

The technical field is as follows:

the utility model relates to an oil field trial production instrument technical field, concretely relates to trial production fishing tool.

Background art:

the existing common tools for salvaging small-sized fallen objects in the underground trial production operation of the oil field are multi-purpose strong magnetic salvaging devices, one grab or reverse circulation salvaging baskets, for sandstone oil fields, most wells have sand production phenomena, if the serious condition of sand burying occurs during salvaging, the fallen objects cannot be effectively fished out by the tools, and the main reason is that the fallen objects are buried by sand and stones, so that the tools cannot directly contact the fallen objects and cannot be salvaged.

The utility model has the following contents:

in order to solve the problem, the utility model aims at providing a pilot production fishing tool.

The technical scheme of the utility model is that: the utility model provides a pilot production fishing tool, includes the top connection, and top connection lower part fixed connection milling barrel, milling barrel bottom have the sawtooth structure, and top connection hole fixed connection has the filter screen, and it has the annular to open on the milling barrel inner wall of filter screen lower part, and it has strong magnetic ring to inlay in the annular.

The inner hole of the milling sleeve at the lower part of the strong magnetic ring is provided with an annular groove, the elastic ring is fixedly connected in the annular groove and is of a conical thin-wall structure, a plurality of uniformly distributed strip-shaped notches are formed in the circumferential direction of the elastic ring, the small diameter surface of the cone is of an intermittent opening structure, the large diameter part of the cone is fixedly connected in the annular groove formed in the inner hole of the milling sleeve, the outer side of the small diameter of the cone is provided with a groove, and an annular spring is arranged in the groove.

The lower part of the filter screen is in a conical pointed structure, the upper part of the filter screen is cylindrical with the connecting part of the upper joint, and a plurality of uniformly distributed sand discharge holes are formed in the outer side of the cylindrical part of the filter screen and the pipe wall of the milling sleeve.

The bottom of the milling barrel is provided with a sawtooth structure, and the outer surface of the sawtooth is sintered with a tungsten carbide coating.

The utility model discloses following beneficial effect has: set up the sawtooth structure and be used for the cover to mill the grit makes the junk exposes, and strong magnetic ring keeps off the junk with the magnetic adsorption for the magnetic ring, sets up the elastic ring, does not have the magnetic attraction at the junk, and when strong magnetic ring lost effect, the elastic ring was in a cover milling section of thick bamboo with the junk, and the backwash gets into the sand grain of a cover milling section of thick bamboo and passes through the grit discharge hole and discharge the cover milling section of thick bamboo outside, has reduced filter screen blocking's possibility to block up the passageway of backwash well circulation, can guarantee the salvage effect, the surface sintering of sawtooth has tungsten carbide coating to improve the surface hardness and the wearability of sawtooth, improves life.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

fig. 2 is a structural diagram of the elastic ring of the present invention.

In the figure, 1-upper joint, 2-sand discharge hole, 3-filter screen, 4-conical tip, 5-strong magnetic ring, 6-milling sleeve, 7-annular spring, 8-elastic ring, 9-sawtooth and 10-strip-shaped notch.

The specific implementation mode is as follows:

the present invention will be further explained with reference to the accompanying drawings:

combine fig. 2 by fig. 1 to show, a pilot production fishing tool, including top connection 1 be used for connecting the rotary equipment, 1 lower part fixed connection shell milling section of thick bamboo 6 of top connection, shell milling section of thick bamboo 6 bottom has a sawtooth 9 structure when the junk is buried by the grit, it is rotatory a shell milling section of thick bamboo 6, sawtooth 9 structure is used for the shell milling to fall the grit makes the junk exposes, 1 hole fixedly connected with filter screen 3 of top connection for filter along with backwash well circulation extremely granule debris in the shell milling section of thick bamboo, in order to avoid plugging up the endless passageway of backwash well, it has the annular to open on the 6 inner walls of shell milling section of thick bamboo of filter screen 3 lower part, has inlayed strong magnetic ring 5 and uses the magnetic adsorption junk in the annular.

An annular groove is arranged on an inner hole of a milling sleeve 6 at the lower part of a strong magnetic ring 5, an elastic ring 8 is fixedly connected in the annular groove, the elastic ring 8 is of a conical thin-wall structure, a plurality of strip-shaped notches 10 which are uniformly distributed are arranged along the circumferential direction of the elastic ring 8, the small diameter surface of the cone is of an interrupted opening structure, the large diameter part of the cone is fixedly connected in the annular groove arranged on the inner hole of the milling sleeve 6, the small diameter outer side of the cone is provided with a groove, an annular spring 7 is arranged in the groove, the elastic ring is arranged at the lower part of the strong magnetic ring 5, when falling objects are circularly flushed into the milling sleeve 6 by a backwash well, the falling objects flush the elastic ring 8, so that the small diameter opening of the elastic ring 8 is opened, the falling objects enter the milling sleeve 6, under the contraction action of the annular spring 7, the small diameter opening of the elastic ring 8 is closed, the falling objects are blocked in the milling sleeve 6 to avoid falling objects to fall off again, the structure does not have magnetic attraction, can ensure the fishing effect.

Filter screen 3, the lower part of filter screen 3 is conical tip 4 shape structure, upper portion and top connection 1's connecting portion are cylindricly, the drum portion outside of filter screen 3, it has the sand discharge hole 2 of a plurality of equipartitions to open on the pipe wall of a milling sleeve 6, conical tip 4's structure makes the sand grain in the liquid that flows through along with conical tip 4 outwards flows, mill a 6 outsides of section of thick bamboo through the sand discharge hole 2 discharge, the possibility of filter screen jam has been reduced to stop up the circulating passageway of backwash well, improve the salvage effect.

The bottom of the milling sleeve 6 is provided with a sawtooth 9 structure, the outer surface of the sawtooth 9 is sintered with a tungsten carbide coating, and the tungsten carbide coating can improve the surface hardness and the wear resistance of the sawtooth and prolong the service life.

Claims

1. The utility model provides a try on and adopt fishing tool, includes top connection (1), its characterized in that: the lower part of the upper joint (1) is fixedly connected with a milling barrel (6), the bottom of the milling barrel (6) is provided with a sawtooth (9) structure, the inner hole of the upper joint (1) is fixedly connected with a filter screen (3), the inner wall of the milling barrel (6) at the lower part of the filter screen (3) is provided with an annular groove, and a strong magnetic ring (5) is embedded in the annular groove.

2. A pilot production fishing tool as claimed in claim 1, wherein: open on a milling sleeve (6) hole of strong magnetic ring (5) lower part has the annular, annular internal fixation connects elastic ring (8), elastic ring (8) are a conical thin wall structure, open a plurality of bar breach (10) that have the equipartition along elastic ring (8) circumferencial direction, the little diametric plane of circular cone is intermittent open structure, the circular groove of opening on milling sleeve (6) hole is gone up to the partial fixed connection of circular cone major diameter, the minor diameter outside of circular cone is opened flutedly, be equipped with ring spring (7) in this recess.

3. A pilot production fishing tool as claimed in claim 1, wherein: the lower part of the filter screen (3) is of a conical pointed end (4) shaped structure, the upper part of the filter screen is cylindrical with the connecting part of the upper joint (1), and a plurality of uniformly distributed sand discharge holes (2) are formed in the outer side of the cylindrical part of the filter screen (3) and the pipe wall of the milling sleeve (6).

4. A pilot production fishing tool as claimed in claim 1, wherein: the bottom of the milling sleeve (6) is provided with a sawtooth (9) structure, and the outer surface of the sawtooth (9) is sintered with a tungsten carbide coating.