CN207905752U

CN207905752U - A kind of pipeline internal cutting device

Info

Publication number: CN207905752U
Application number: CN201820013355.8U
Authority: CN
Inventors: 吕文捷
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-01-04
Filing date: 2018-01-04
Publication date: 2018-09-25
Anticipated expiration: 2028-01-04

Abstract

A kind of pipeline internal cutting device,Including tool housing,Anchoring device is provided on the outside of tool housing,Longitudinal axis one end of tool housing is equipped with the tool heads that can be stretched in longitudinal axis direction,Tool heads are internally provided with the cutting pedestal that can be stretched,It is provided with cutting element on cutting pedestal,Cutter device is hung in by after Casing-Cutting predetermined depth,Extending tool is being arranged under the independent driving effect of tool interior and tightly against by the inner wall of Casing-Cutting in anchoring device,After anchoring device effect,Tool heads one are under separate machine driving,The relative distance so as to adjust cutting element to anchoring device is moved in longitudinal axis direction,Second is that being rotated around longitudinal axis,To drive single-point cutter to be cut,After ready,Pedestal is cut under the drive of independent driving mechanism by cutting element,The time of cutting is greatly shortened and to the holding time of wellbore to improve working efficiency in the utility model.

Description

A kind of pipeline internal cutting device

Technical field

The utility model is related to oil drilling technology field, more particularly to a kind of pipeline internal cutting device.

Background technology

In certain stages of drilling well and exploitation, need the metal tube in wellbore carrying out cutting operation, or need Remove certain underground device such as packers etc..To realize this operation, need to stretch into cutting tool in pipeline, and by remote Journey operation is cut.

The pipe cutting tool for having a quasi-tradition, is normally mounted at drilling rod, coiled tubing or other pipe ends, water The cutting tool or punching tool of power or machinery.This kind of equipment is typically more heavy, purchase, installation and the cost operated It is higher；This kind of equipment is operated, generally requires to be completed by the bench drill machine consumption a few days.And it is thinner in the pipeline for needing to cut When, it will not generally use this kind of equipment.

This kind of equipment is generally equipped with several pieces large-scale blades, and these blades can be dug into pipeline.It digs into pipeline, that is, exists It drills on duct wall, rather than carries out fine cut, this operation needs to consume mass energy.Such cutting also tends to make The pipe end obtained after being cut is irregular, and this perhaps can influence the subsequent operation to pipeline.

In addition, this kind of equipment usually requires to realize the anchoring in inside pipe casing by hydraulic pressure or pneumatic mode.It uses Hydraulic pressure and/or pneumatic mode mean that needs mostly with hawser or pipeline, this is unfavorable for equipment and is used in casing.For example, In the oil well of gas bearing petroleum, to carry out the cutting of depths, need to increase capping and vent plug mechanism.

In addition widely used to also have the high pressure annular shock wave generated using explosive blasting to realize the cutting of pipeline.So And it is readily appreciated that the depth of cut of this method and depends on the geometric parameter of explosive payload and explosion.It is in most cases The cutting for ensureing pipeline, can all be packed into excessive explosive, therefore can be used only in by the field without any device outside cutting pipeline It closes.

Invention content

In order to overcome the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of pipeline internal cutting dresses It sets, the machine cuts to pipeline, perforating and cut-out control line can be realized on the basis of only using light downhole cable Equal work, notch is clean and tidy, and depth of cut is controllable, light-weight and no longer need to other additional hydraulics or driving device, significantly Shorten the time of cutting and to the holding time of wellbore to improve working efficiency.

In order to achieve the above object, the technical solution adopted in the utility model is：

A kind of pipeline internal cutting device, including tool housing 1 are provided with anchoring device 2, work in the outside of tool housing 1 Has longitudinal axis one end of shell 1 equipped with the tool heads 3 that can be stretched in longitudinal axis direction, the tool heads 3 are internally provided with can be with Flexible cutting pedestal 4 is provided with cutting element on the cutting pedestal 4.

The cutting element is divided into single-point cutter 5, and multiple spot cuts disk 6 and tension devices 7.

The tool heads 3 stretch in longitudinal axis direction or are regular length.

The anchoring device 2 is provided with one group or one group or more, every group of separate configuration on same sagittal plane Three or three or more spuds.

The utility model has the beneficial effects that：

Whole device may be implemented by the fixation in cutting pipeline, without other additional fixation devices in anchoring device 2.Work Tool head 3 drives cutting pedestal 4 and single-point cutter 5 to carry out cutting circular motion after rotating, and then cutter base 4 can be stretched Go out cutter and realizes the action of pipeline internal cutting.Disk 6 or tension devices 7 are cut to finger equipped with multiple spot alternatively, being driven by tool heads 3 After determining direction, multiple spot cutting element or tension devices carry out cutting circular motion under the drive of driving device, then cutter base Seat 4 just stretches out cutter realization and is acted to the directional cutting of pipeline.Telescopic tool heads 3 may be implemented to carry out after anchoring multiple Accurate cutting.These characteristics so that cutter device is compact-sized, and deployment is quick, and the mode type of cutting is more, flexible and depth side To controllable.

Description of the drawings

FIG. 1 is a schematic structural view of the utility model.

Fig. 2 is schematic diagram of three kinds of different cutting elements on cutting pedestal.

Fig. 3 is the schematic diagram of cutting element adjustable angle.

Fig. 4 is the schematic diagram that single-point cutter implement casing-pipe cutting in off-axis.

Fig. 5 is the schematic diagram that multiple spot cuts disk Casing-Cutting.

Specific implementation mode

Narration in detail is made to the structural principle of the utility model and operation principle below in conjunction with the accompanying drawings.

As shown in Figure 1：Including tool housing 1, anchoring device 2 is installed on tool housing, in the longitudinal axis of tool housing 1 One end is internally provided with the cutting pedestal 4 that can be stretched equipped with the tool heads 3 that can be stretched in longitudinal axis direction, tool heads 3, cuts base Three kinds of different cutting elements can be separately installed on seat.

As shown in Figure 2：The cutting element is divided into single-point cutter 5, and multiple spot cuts disk 6 and tension devices 7.

The anchoring device 2 is vertically disposed with two groups, three of every group of 120 degree of separate configuration on same sagittal plane Spud.

Utility model works principle：

Cutter device is hung in by after Casing-Cutting predetermined depth, and the independence driving in tool interior is being arranged in anchoring device 2 The lower extending tool of effect and tightly against by the inner wall of Casing-Cutting, with realize cutter device with by the relatively solid of Casing-Cutting It is fixed.In most cases, the longitudinal axis of cutting tool with by the longitudinal axes parallel of Casing-Cutting and overlap, but in special circumstances may be used With by controlling the length difference of each anchoring device stretching to the eccentric anchoring of implementation tool, the i.e. longitudinal direction of cutting tool Axis with by the longitudinal axes parallel of Casing-Cutting but misaligned, to realize to by the deviation cutting of Casing-Cutting, such as Fig. 4.

It is worth noting that anchoring device 2 is typically designed as two groups, every group of 120 degree of separate configuration on same sagittal plane Three spuds.Any spud can set the length stretched out by internal drive, and work is adapted to this Tool just needs the case where different tube diameters intersection uses.According to load-bearing needs, such as when using dragger, Ke Yishe Be calculated as it is more than two with increase be anchored after supporting force so that cutting machine will not move in tube wall and cause cutting operation during cutting Failure.

After the effect of anchoring device 2, tool heads 3 play two：When under separate machine driving, in longitudinal axis direction The relative distance to anchoring device so as to adjust cutting element is moved, such as Fig. 3 (b) and Fig. 3 (c)；Second is that around longitudinal direction Axis is rotated, and to drive single-point cutter 5 to be cut, is either adjusted using multiple spot cutting disk 6 or tension devices 7 Direction (cutting azimuth).

After cutting element and 2 relative position of anchoring device and azimuth all determine, the feed (stretching) of cutting element is inclined Angle can also be adjusted as needed, and chamfering can be cut off with this.As shown in Fig. 3 (a) and Fig. 3 (b).

After ready, cutting pedestal 4, by cutting element, such as single-point cutter, stretches out under the drive of independent driving mechanism Tool heads carry out cutting operation to casing, such as shown in Fig. 1.Pay attention to thering is one for multiple spot cuts disk and tension devices It covers individual accessory mechanisms and completes to cut to drive disk or tension devices.

Fig. 5 then illustrates the process that the cutting pedestal 4 stretched out drives multiple spot cutting disk to cut casing.

Claims

1. a kind of pipeline internal cutting device, which is characterized in that including tool housing (1), be provided on the outside of tool housing (1) Anchoring device (2), longitudinal axis one end of tool housing (1) are equipped with tool heads (3), and the tool heads (3) are internally provided with can be with Flexible cutting pedestal (4) is provided with cutting element on the cutting pedestal (4).

2. a kind of pipeline internal cutting device according to claim 1, which is characterized in that the cutting element is divided into single-point Cutter (5), multiple spot cut disk (6) and tension devices (7).

3. a kind of pipeline internal cutting device according to claim 1, which is characterized in that the tool heads (3) are in longitudinal direction Axis direction is flexible or is regular length.

4. a kind of pipeline internal cutting device according to claim 1, which is characterized in that anchoring device (2) setting There is one group or one group or more, three or three or more spuds of every group of separate configuration on same sagittal plane.