CN219262316U

CN219262316U - Sand washing pen point

Info

Publication number: CN219262316U
Application number: CN202221534414.9U
Authority: CN
Inventors: 杨录福; 张栋; 戈素青; 路娟; 安小平
Original assignee: Tianjin Fumin Petroleum Machinery Equipment Technology Co ltd
Current assignee: Tianjin Fumin Petroleum Machinery Equipment Technology Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2023-06-27
Anticipated expiration: 2032-06-17

Abstract

The utility model relates to the technical field of oil extraction engineering, in particular to a sand washing nib, which comprises a sand washing nib body, wherein the sand washing nib body is cylindrical, two ends of the sand washing nib body are respectively provided with a joint end and a nib end, the joint end is connected with a pipe column, the nib shape of the pen is conical with an inclined truncated top, and a plurality of spiral grooves are uniformly formed from the lower part of the joint end to the nib end along the inner wall of the sand washing nib body; the spiral grooves are of bending shapes with included angles, and each spiral groove is connected with one another and is fully distributed on the inner wall of the sand washing pen point, so that the inner wall and the outer surface of the sand washing pen point are provided with bending structures with included angles. The beneficial effects of the utility model are as follows: the sand washing liquid spirally flows in the sand washing pen point along the bent shape, and forms vortex type water flow after gathering at the pen point end, so as to impact and drill between sand stones, roll the sand stones, and ensure the sand washing to be clean.

Description

Sand washing pen point

Technical Field

The utility model relates to the technical field of oil extraction engineering, in particular to a sand washing pen point.

Background

In oil-water well production operation, sand in the stratum falls into the shaft along with stratum liquid, and accumulated sand falls into the shaft bottom more and more along with time, so that contact between the shaft and the stratum is easily blocked, production of the oil-water well is hindered, and the sand at the shaft bottom needs to be removed. The conventional technical method is that sand washing treatment is carried out, sand washing liquid is pumped into the ground, a sand washing pen point is connected to the lower part of a sand washing pipe column, a sand washing channel is opened by the sand washing pen point going into a well, and sand can be carried out when the sand washing liquid returns out of the ground, so that sand washing operation is completed.

In the prior art, patent application number: CN201821847010.9 discloses a sand washing nib of an anti-blocking oil-water well, which comprises: the sand washing device comprises a connector, an outer nib, a spring, a hanging communication connector, a limiting communication ring and an inner nib, wherein the inner nib can retract into the outer nib under the action of the spring after the inner nib is blocked and cannot move downwards in operation, sand washing liquid is washed by the outer nib downwards through a communication groove and a communication hole, and the inner nib stretches out to perform normal sand washing operation after sand washing.

The prior art has the following problems: the sand washing liquid of the outer pen point and the inner pen point is direct current sand washing, and in the sand washing process, the direct current sand washing is incomplete and the sand washing is not clean due to insufficient impact force due to long sand depositing time and heavy weight.

How to solve the problem that the direct current sand washing liquid sand washing force is insufficient in the prior art is a urgent need of the technicians in the field.

Disclosure of Invention

The utility model aims to provide a sand washing pen point which is used for solving the technical problems in the background technology.

The technical scheme of the utility model is as follows: the sand washing pen point comprises a sand washing pen point body, wherein the sand washing pen point body is cylindrical, two ends of the sand washing pen point body are respectively provided with a joint end and a pen point end, the joint end is connected with a pipe column, the shape of the pen point is a conical shape with an inclined truncated top, and a plurality of spiral grooves are uniformly formed from the lower part of the joint end to the pen point end along the inner wall of the sand washing pen point body;

the spiral grooves are of bending shapes with included angles, and each spiral groove is connected with one another and is fully distributed on the inner wall of the sand washing pen point, so that the inner wall and the outer surface of the sand washing pen point are provided with bending structures with included angles.

Further, the number of the spiral grooves is four to six.

Further, the joint end can be connected with the pipe column in a buckling or threaded mode.

Further, the height of the sand washing pen point is 600-800mm.

Further, there is an inwardly bent annular structure at the bottom of the pen tip.

The utility model has the advantages and positive effects that: the inner wall of the sand washing pen point is provided with a spiral groove, so that the inner wall of the sand washing pen point is provided with a spiral bending structure with an included angle; after sand washing liquid enters the sand washing pen point from the pipe column, the spiral groove in the sand washing pen point changes the flowing direction of the sand washing liquid, so that the sand washing liquid spirally flows along the bent shape of the spiral groove, the sand washing liquid is collected at the pen point end after flowing along the changed shape, the spiral sand washing liquid is gathered through the inclined truncated cone shape of the pen point, vortex water flow is formed to impact between sand and stones in a well after the annular reinforcement gathering of the inward bending of the pen point end, when the well depth is 2000-3000m, the pressure of the well washing liquid is enough to form a cyclone effect, sand and stones are rolled up, and sand washing work is completed.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic cross-sectional view of a spiral groove of the present utility model.

In the figure:

1. joint end 2, nib end 3, and surface of sand-washing nib

4. Spiral groove

Detailed Description

An embodiment of the present utility model is described in detail below, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

The sand washing pen point comprises a sand washing pen point body, wherein the sand washing pen point body is cylindrical, two ends of the sand washing pen point body are respectively provided with a joint end 1 and a pen point end 2, the joint end 1 can be connected with a pipe column through a pipe buckle, the pen point end 2 is conical with an inclined truncated top, and six spiral grooves 4 are uniformly formed from the lower part of the joint end 1 to the pen point 2 along the inner wall of the sand washing pen point body;

the spiral grooves 4 are in bending shapes with included angles, and the inner walls of the sand washing pen points are fully distributed among the spiral grooves 4 in a connecting mode, so that the inner walls of the sand washing pen points and the surface 3 of the sand washing pen points are provided with bending structures with included angles.

When the sand washing operation is carried out on an oil well with the depth of 2500 m, a sand washing nib with the height of 700mm is connected to a pipe column through a pipe buckle, sand washing liquid is injected into an inner pore canal of the pipe column, the sand washing liquid flows downwards to the sand washing nib through the pipe column, the flowing direction of the sand washing liquid is changed along with the spiral groove shape of the inner wall of the sand washing nib, at the moment, the liquid in the sand washing nib is in a more dispersed spiral shape, along with the sand washing liquid which downwards goes to the pen nib 2, the liquid starts to gather under the action of the pen nib 2, the gathering is enhanced at the annular structure of the bottom of the pen nib 2, vortex type water flow is formed to impact between drilling sand stones, the cyclone effect is formed to roll the sand stones, and the sand washing liquid carries the sand stones to the ground through the outer part of the pipe column, so that the well washing sand washing operation is completed.

Claims

1. A sand washing nib, characterized in that: the pen comprises a sand washing pen point body, wherein the sand washing pen point body is cylindrical, two ends of the sand washing pen point body are respectively provided with a joint end and a pen point end, the joint end is connected with a pipe column, the shape of the pen point is a conical shape with an inclined truncated top, and a plurality of spiral grooves are uniformly formed from the lower part of the joint end to the pen point end along the inner wall of the sand washing pen point body;

2. A sand washing nib as claimed in claim 1, wherein: the number of the spiral grooves is four to six.

3. A sand washing nib as claimed in claim 1, wherein: the joint end can be connected with the pipe column in a buckling or threaded mode.

4. A sand washing nib as claimed in claim 1, wherein: the height of the sand washing pen point is 600-800mm.

5. A sand washing nib as claimed in claim 1, wherein: at the bottom of the pen tip there is an inwardly bent annular structure.