CN215889980U - Prevent top and bore plummet device - Google Patents

Abstract

The utility model relates to the technical field of paraffin removal of a self-blowing well for oil extraction in an oil field, in particular to a top drilling prevention plumb bob device. The device's plummet body upper end is equipped with the go-between, and it has the water conservancy diversion channel to open axially on the plummet body outer wall, and the axial is equipped with bellied resistance line body on the plummet body outer wall, and the design of plummet body bottom has the plummet base cone. The utility model realizes strong wax removal capability, prevents top drilling and achieves safe and rapid wax removal maintenance operation of the self-blowing well. The defects that the existing plumb bob is poor in paraffin removal capability and top drilling is easy to cause well blockage are overcome.

Description

Prevent top and bore plummet device

The technical field is as follows:

the utility model relates to the technical field of paraffin removal of a self-blowing well for oil extraction in an oil field, in particular to a top drilling prevention plumb bob device.

Background art:

in the production process of the self-blowing well, manual and mechanical paraffin removal is required periodically, and in order to remove paraffin precipitated in an oil pipe, paraffin removal by adopting a paraffin scraper is one of practical and effective methods.

At present, the mechanical paraffin removal uses the matching of a paraffin scraping sheet and a plumb bob, the paraffin scraping sheet and the plumb bob are connected through a steel wire and are put into a well, and the aim of scraping off hard paraffin attached to the inner wall of an oil pipe is achieved by the dead weight of the plumb bob. The existing plumb bob is a solid cylinder, once paraffin blocking occurs during paraffin removal, the bottom hole pressure rises suddenly, the plumb bob can be jacked, a top drill is generated to clamp a paraffin scraping sheet and a steel wire and cannot be lifted, the paraffin removal quality is difficult to guarantee, the paraffin scraping sheet is stressed, extruded and deformed to cause well blocking, and the difficulty is increased for production management work of a self-injection well.

The utility model has the following contents:

the utility model aims to solve the technical problem of providing a top drilling prevention plumb bob device which realizes strong paraffin removal capacity and top drilling prevention and achieves safe and rapid paraffin removal maintenance operation of a self-blowing well. The defects that the existing plumb bob is poor in paraffin removal capability and top drilling is easy to cause well blockage are overcome.

The technical scheme adopted by the utility model is as follows: a top drilling prevention plumb bob device comprises a plumb bob body; the lead hammer body upper end is equipped with the go-between, and it has the water conservancy diversion channel to open axially on the lead hammer body outer wall, and the axial is equipped with bellied resistance line body on the lead hammer body outer wall, and the design of lead hammer body bottom has the lead hammer base cone.

The resistance line body is arranged on the plumb body at the back of the diversion channel.

The utility model has the beneficial effects that:

1. the de-waxing capacity is strong: the flow guide channel is designed, the flow area is increased, the wax scraping resistance is reduced, and wax chips can be discharged and taken away from the flow guide channel and the annular space, so that the full wax removal effect is achieved;

2. top drilling prevention: the top drill prevention plumb bob device adopts an eccentric diversion channel which is of an asymmetric structure, one side of the top drill prevention plumb bob device is stressed greatly when the top drill prevention plumb bob device is lifted, the top drill prevention plumb bob device is enabled to be deviated to one side, and meanwhile, under the resistance action of a resistance line body, the top drill prevention plumb bob device can slowly move upwards, and the top drill cannot be suddenly pushed up too fast to cause top drill and is not easy to clamp.

Description of the drawings:

the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

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

Fig. 2 is a schematic structural diagram of a resistance wire body.

The specific implementation mode is as follows:

as shown in fig. 1 and 2, a top-drilling prevention plumb bob device includes a plumb bob body 2; the plumb bob body 2 is made of lead and needs to be small in size and heavy as a balance weight, so that the purpose of drawing the wax scraping sheet to descend is achieved. The upper end of the plumb bob body 2 is provided with a connecting ring 1, and the connecting ring 1 is movably connected with a wax scraping sheet arranged on the upper part. The axial is opened on 2 outer walls of plumb bob bodies has water conservancy diversion channel 3, and water conservancy diversion channel 3 increases the area of overflowing, reduces and scrapes the wax resistance, and the wax bits can be taken away from water conservancy diversion channel 3 and annular space discharge, plays abundant wax removal effect. The outer wall of the plumb bob body 2 is axially provided with a convex resistance line body 5, the resistance line body 5 is in a convex linear structure, the contact area of the resistance line body 5 and the pipe wall is enlarged, once wax blockage occurs, the plumb bob slowly ascends under the resistance of the resistance line body 5, and sudden top drilling and hard clamping are avoided. The design of 2 bottom ends of plummet bodies has plummet base cone 4, and plummet base cone 4 plays the purpose of guide plummet wax scraping and descends.

The resistance line body 5 is arranged on the plumb body 2 at the back of the diversion channel 3.

When the wax scraping plate is used, the wax scraping plate is connected with the connecting ring 1, or when the wax is heavy and cannot go down, the wax scraping plate can be disconnected, and the connecting ring 1 is directly connected with a steel wire joint of a steel wire rope.

When paraffin removal operation is carried out, once paraffin blockage occurs, the bottom hole pressure rises suddenly and moves upwards instantly, the top drilling prevention plumb bob device can be extruded to one side of the pipe wall under the action of the diversion channel 3, the top drilling prevention plumb bob device slowly moves upwards under the resistance of the resistance wire body 5, and sudden top drilling hard clamping is avoided. The resistance line body 5 increases the contact area with the pipe wall, increases the wax scraping upward resistance, slowly opens, and plays a role in smoothly removing wax.

In the paraffin removal process, the plummet with different diameters is selected to be replaced according to the paraffin precipitation degree, the paraffin precipitation depth and the pressure, so that the aim of effectively removing the paraffin is fulfilled.

It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the utility model.

Claims (2)

1. A top drilling prevention plumb bob device comprises a plumb bob body (2); the method is characterized in that: a connecting ring (1) is arranged at the upper end of the plumb body (2), a flow guide channel (3) is axially formed in the outer wall of the plumb body (2), a raised resistance line body (5) is axially arranged on the outer wall of the plumb body (2), and a plumb bottom cone (4) is designed at the bottom end of the plumb body (2).

2. The anti-jackdrill plumb device of claim 1, wherein: the resistance line body (5) is arranged on the plumb body (2) at the back of the diversion channel (3).

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