CN105252055A - Internal slitting device of petroleum casing pipe - Google Patents
Internal slitting device of petroleum casing pipe Download PDFInfo
- Publication number
- CN105252055A CN105252055A CN201510834246.3A CN201510834246A CN105252055A CN 105252055 A CN105252055 A CN 105252055A CN 201510834246 A CN201510834246 A CN 201510834246A CN 105252055 A CN105252055 A CN 105252055A
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- casing pipe
- support frame
- petroleum casing
- radial
- bracing frame
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Abstract
The invention provides an internal slitting device of a petroleum casing pipe. The device comprises a body support frame, an inner wall support component and a cutting mechanism, wherein the body support frame is fixed in the petroleum casing pipe through the inner wall support component; the cutting mechanism comprises a milling blade, a cutting power component and a radial feeding component; the radial feeding component comprises an outer support frame and a radial power piece; the outer support frame and the inner support frame are slidingly connected; a radial slide way is formed in the outer support frame; the radial power piece supplies power for the inner support piece to slide along the radial slide way; and the displacement direction of the inner support frame is parallel to the diameter direction of the petroleum casing pipe. The device can achieve the purpose of slitting in the petroleum casing pipe, and can guarantee quick slitting efficiency under the condition of not considering the milling blade; and meanwhile, because of the machining mode, the radial jumping condition of the milling blade in external machining is prevented, and the loss of the milling blade is reduced.
Description
Technical field
The invention belongs to oil servicing unit field, especially relates to the inner slotting device of a kind of petroleum casing pipe.
Background technology
In the drilling operation of oil, cutting seam sieve tube is important equipment, is usually used in completion or oil extraction sand prevention in advance.Cutting seam sieve tube with its good rigidly, anti-scratch mill, gap is even, recovery ratio is high and the advantage such as better than other mode sand controlling results is widely used.
Cutting seam sieve tube is generally cut out 7,000 to 10 on steel alloy petroleum casing pipe, and more than 000 intermittently and for the narrow slit of filter sand.
And the traditional section seam type of cutting seam sieve tube is divided into rectangular slits and trapezoidal seam.
Rectangular slits (also known as vertical masonry joint) the i.e. inside and outside wall gap of pipe is equally wide, and the tube wall strength after processing is high, but oil be mingled with fine sand in the inflow pipe of gap time easily block, oil recovery efficiency is low, can cause the accidents such as well of collapsing when blocking serious.
Trapezoidal seam section is narrow and wide at interior wall opening at tube outer wall opening, and shape is isosceles trapezoid.Trapezoidal sewer has stronger " self-cleaning " effect, and gravel is easy to be washed away by fluid, not easily forms sand plug after entering seam chamber, so the inside and outside pressure drop of pipe is little, tar productivity is high, and sand controlling result is good.
But domestic and international processing cutting seam sieve tube has two kinds at present: Laser Processing, milling cutter processing, these two kinds of methods are processes from petroleum casing pipe outside, thus can cause a lot of realistic problem.
The shortcoming of Laser Processing is: laser belongs to hot-working, and after processing, the surface roughness value of seam is high, and surface quality is poorer than machined, easily causes liquid flowing resistance; Affect the many factors of suface processing quality, easily cause tube surfaces blast hole, burn the defect such as seam, cross sectional shape irregularity, inner dross; Due to the restriction of laser beam foucing position, be easy to occur that body out-seam width dimensions is larger than inseam, during use, easily cause sand plug.And the shortcoming of milling cutter processing is: cutting axis is cantilevered axle, and during cutting, circular runout easily causes breaks down, and blade life is short, and working (machining) efficiency is low; The rotation of blade can not meet and exceed the inner wall surface of pipe, so joint-cutting out-seam is longer than inseam, leaves arc steps, easily forms sand plug when screen casing uses.
Summary of the invention
In view of this, the invention is intended to propose the inner slotting device of a kind of petroleum casing pipe, to solve the problem that working (machining) efficiency is low and service wear is high.
For achieving the above object, the technical scheme of the invention is achieved in that
The inner slotting device of a kind of petroleum casing pipe, it comprises main bracing frame, inwall supporting component and cutting mechanism;
It is inner that described main bracing frame is fixed on described petroleum casing pipe by inwall supporting component;
Described cutting mechanism comprises cutter blade, cutting power assembly and radial feed assembly;
Described cutting power assembly comprises the cutting gear, inner support frame and the rotational power part that are connected with cutter blade, described inner support frame supports described cutting gear and rotates around himself axis, and described rotational power part provides the power rotated around himself axis, the tangent line of the cutting track of described cutter blade and the axis being parallel of described petroleum casing pipe for cutting gear;
Described radial feed assembly comprises outer support frame and radial force piece, described outer support frame and inner support frame are slidably connected, described inner support frame has radial slideway, described radial force piece for described inner support frame provide radially slideway offer direction slide power and the direction of displacement of this inner support frame is parallel with the diametric(al) of described petroleum casing pipe, described outer support frame is also slidably connected with described main bracing frame, and the axis being parallel of this glide direction and described petroleum casing pipe.
Further, described inwall supporting component comprises clamping brace block and hydraulic cylinder, described main bracing frame has connecting hole, described clamping brace block is connected to the outside of described main bracing frame, and described hydraulic cylinder is placed in the inside of this main bracing frame and the piston rod of this hydraulic cylinder is connected with described clamping brace block by connecting hole.
Further, the axis bilateral symmetry of described main bracing frame sets up multiple connecting hole.
Further, described main bracing frame is arc frame body, and opening part and the cutter blade of this main bracing frame set up position corresponding.
Further, described rotational power part comprises the supporting worm gear set up and worm screw, described worm gear and described cutting gears meshing.
Further, the feed screw nut that described radial force piece comprises radial feed screw mandrel and is mated, described feed screw nut and described radial slideway are slidably connected, and the axis angle offering direction and described radial feed screw mandrel of this radial slideway is acute angle.
Further, described outer support frame is U-shaped support body and is placed on the outside of described inner support frame.
Further, the outside of described outer support frame has support chute, the madial wall of described main bracing frame is provided with axial slider, and described axial slider to be placed in described support chute and to be slidably connected with it.
Further, the longitudinal section of the blade of described cutter blade is trapezoidal faces and the upper base of this trapezoidal faces and petroleum casing pipe inwall vicinity.
Further, the blade of described cutter blade comprises sharp blade and side edge portion, and the both sides of described sharp blade are arranged with side blade, and described sharp blade is the end face of this cutter blade, and described side edge portion is the side of cutter blade.
Further, described cutter blade is superposed by the blade that multiple diameter is different and forms.
Relative to prior art, the inner slotting device of a kind of petroleum casing pipe described in the invention has following advantage:
(1) matching design of the main bracing frame described in the invention, inwall supporting component and cutting mechanism can reach the object at petroleum casing pipe inside processing slot, when cutter blade need not be considered, also the efficiency in fly-cutting gap can be ensured, simultaneously because of this kind of cooked mode, avoid the circular runout situation of cutter blade when external process, and then reduce the loss of cutter blade.
(2) structural design of the cutter blade described in the invention makes the slot processed be trapezoidal shape, and the opening of external wall of oil pipe box is narrow and wide at interior wall opening, thus avoid the formation of sand plug, because trapezoidal sewer has stronger " self-cleaning " effect, gravel is easy to be washed away by fluid after entering seam chamber, so the interior external pressure of sleeve pipe reduces, tar productivity is high, and sand controlling result is good;
The slot that the cutter blade using a blade to form cuts out is then rectangular slits, but is cut from inside to outside due to it, so also can not form sand plug.
(3) the inner slotting device overall structure of the petroleum casing pipe described in the invention scale of construction is little, saves production cost, so improve the value of overall input-output ratio.
Accompanying drawing explanation
The accompanying drawing of the part of formation the invention is used to provide the further understanding to the invention, and the schematic description and description of the invention, for explaining the invention, does not form the improper restriction to the invention.In the accompanying drawings:
Fig. 1 is a kind of petroleum casing pipe inner slotting device overall structure schematic diagram described in the invention embodiment;
Fig. 2 is the radial force piece structural representation described in the invention embodiment;
Fig. 3 is the cutter blade structural representation described in the invention embodiment.
Description of reference numerals:
1-worm gear; 2-worm screw; 3-cuts gear; 4-cutter blade; 41-point blade; 42-side edge portion; 5-inner support frame; 6-outer support frame; The radial slideway of 51-; 7-clamping brace block; 8-radial feed screw mandrel; 9-hydraulic cylinder; 10-main bracing frame; 11-screw shifting block; 12-axial slider.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the invention and the feature in embodiment can combine mutually.
In the description of the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the restriction to the invention can not be interpreted as.In addition, term " first ", " second " etc. only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, one or more these features can be expressed or impliedly be comprised to the feature being limited with " first ", " second " etc.In the description of the invention, except as otherwise noted, the implication of " multiple " is two or more.
In the description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the invention can be understood by concrete condition.
Below with reference to the accompanying drawings and describe the invention in detail in conjunction with the embodiments.
As illustrated in fig. 1 and 2, the inner slotting device of a kind of petroleum casing pipe, it comprises main bracing frame 10, inwall supporting component and cutting mechanism;
It is inner that described main bracing frame 10 is fixed on described petroleum casing pipe by inwall supporting component;
Here said main bracing frame 10 can select various shape, but the shape coordinated with sleeve pipe is best, so can select to be designed to arc frame, and particularly major arc shape;
And described inwall supporting component comprises clamping brace block 7 and hydraulic cylinder 9, described main bracing frame 10 has connecting hole, described connecting hole can with the arc core of the main bracing frame 10 of arc for round dot, around the uniform multiple connecting hole of this round dot and with the axle center of main bracing frame 10 for bound pair claims to set up, generally four or eight enough ensure that the stability of single unit system, if but offer a connecting hole in the bottom of main bracing frame more than between two connecting holes, then play a supporting role to single unit system, make overall structure more firm;
Described clamping brace block 7 is connected to the outside of described main bracing frame 10, and described hydraulic cylinder 9 is placed in the inside of this main bracing frame 10 and the piston rod of this hydraulic cylinder 9 is connected with described clamping brace block 7 by connecting hole;
When hydraulic cylinder 7 opening movement time, clamping brace block 7 will move thereupon together, and till the inwall abutting to petroleum casing pipe, now single unit system will metastablely be fixed in petroleum casing pipe.
Described cutting mechanism comprises cutter blade 4, cutting power assembly and radial feed assembly;
Described cutter blade 4 sets up position corresponding with the aperture position of main bracing frame 10;
Described cutting power assembly comprises the cutting gear 3, inner support frame 5 and the rotational power part that are connected with cutter blade 4, described inner support frame 5 supports described cutting gear 3 and rotates around himself axis, and described rotational power part provides the power rotated around himself axis, the tangent line of the cutting track of described cutter blade 4 and the axis being parallel of described petroleum casing pipe for cutting gear 3;
Concrete rotational power part can have various ways, wherein a kind ofly comprise the supporting worm gear 1 set up and worm screw 2, described worm gear 1 engages with described cutting gear 3, is now stirred by cutting gear 3 by the rotation of worm screw 2, and so cutter blade 4 has also just moved thereupon together;
Another kind of situation can be provide the power rotated, such as a micro-machine etc. directly to cutting gear 3.
Described radial feed assembly comprises outer support frame 6 and radial force piece, described outer support frame 6 is slidably connected with inner support frame 5, described inner support frame 5 has radial slideway 51, described radial force piece for described inner support frame 5 provide radially slideway 51 offer direction slide power and the direction of displacement of this inner support frame 5 is parallel with the diametric(al) of described petroleum casing pipe;
Above-mentioned radial force piece can select various ways, such as:
The feed screw nut that described radial force piece comprises radial feed screw mandrel 8 and is mated, described feed screw nut and described radial slideway 51 are slidably connected by screw shifting block 11, the axis angle offering direction and described radial feed screw mandrel 8 of this radial slideway 51 is acute angle, when screw mandrel rotates time, feed screw nut moves along the axis direction of this screw mandrel, can force simultaneously inner support frame 5 radially slideway 51 offer direction and be subjected to displacement, thus improve the position of whole cutting mechanism.
Also has a kind of form, described radial force piece comprises radial feed oil cylinder, described outer support frame 6 offers radial slideway, the axes normal offering direction and petroleum casing pipe of radial slideway now and parallel with the diametric(al) of petroleum casing pipe, the piston rod of described radial feed oil cylinder is connected with described inner support frame 5 and provides the power of radially slideway movement for this inner support frame 5.
The version of described outer support frame 6 is also varied, can be tabular, U-shaped shape or V-type shape etc., and described inner support frame 5 is placed in outer support frame 6 inside and is slidably connected corresponding thereto;
The outside of described outer support frame 6 has support chute, and the madial wall of described main bracing frame 1 is provided with axial slider 12, and described axial slider 12 to be placed in described support chute and to be slidably connected with it, and the axis being parallel of this glide direction and described petroleum casing pipe.
As shown in Figure 3, the longitudinal section of the blade of the cutter blade 4 in this device is trapezoidal faces and the upper base of this trapezoidal faces and petroleum casing pipe inwall vicinity, namely the blade of described cutter blade comprises sharp blade 41 and side edge portion 42, the both sides of described sharp blade 41 are arranged with side blade 42, described sharp blade 41 is the upper bottom surface of this cutter blade 4, and described side edge portion 42 is the side of cutter blade 4.
And the edge structure form of cutter blade 4 can be directly made by the blade of customization, also can be formed by the superposition of common blade, as long as select the blade of different-diameter, common blade can also be used.
And the benefit of cutter blade 4 that superposition supports is, described sharp blade 41 is that the proportion of goods damageds are the highest when cutting, so when loss to a certain extent time, as long as change the blade as sharp blade 41, save production budget, raising input produces ratio.
The inner slotting device of multiple above-mentioned petroleum casing pipe can be distributed with in a petroleum casing pipe, and arrange according to the required distance between adjacent slot, thus realize many and stitch the job requirement of simultaneously processing, the size that this device also can be different according to the caliber difference change of petroleum casing pipe simultaneously.
The course of work of the present embodiment:
First by auxiliary support assemblies, main bracing frame 10 and cutting mechanism are placed in the axis place of petroleum casing pipe;
It is identical with inwall supporting component that auxiliary support assemblies described here is structure, but set up position to be positioned at the bottom of main bracing frame 10;
Then, by inwall supporting component, main bracing frame 10 and cutting mechanism are fixed in petroleum casing pipe, now starting radial force piece makes cutter blade 4 abut on petroleum casing pipe inwall, now open rotational power part, so cutter blade 4 starts circumgyration incision, enable the power that cylinder promotes along petroleum casing pipe axis direction to outer support frame 6 one, so cutter blade 4 will be given and petroleum casing pipe wall cut out an elongated gap, and the longitudinal section in this gap is trapezoidal, the opening diameter be on petroleum casing pipe outer wall is less than the opening diameter on petroleum casing pipe inwall.
The foregoing is only the preferred embodiment of the invention; not in order to limit the invention; within all spirit in the invention and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in the invention.
Claims (10)
1. the inner slotting device of petroleum casing pipe, is characterized in that: comprise main bracing frame (10), inwall supporting component and cutting mechanism;
It is inner that described main bracing frame (10) is fixed on described petroleum casing pipe by inwall supporting component;
Described cutting mechanism comprises cutter blade (4), cutting power assembly and radial feed assembly;
Described cutting power assembly comprises the cutting gear (3), inner support frame (5) and the rotational power part that are connected with cutter blade (4), described inner support frame (5) supports described cutting gear (3) and rotates around himself axis, and described rotational power part is cut gear (3) to provide the power rotated around himself axis, the tangent line of the cutting track of described cutter blade (4) and the axis being parallel of described petroleum casing pipe;
Described radial feed assembly comprises outer support frame (6) and radial force piece, described outer support frame (6) and inner support frame (5) are slidably connected, described inner support frame (5) has radial slideway (51), described radial force piece be described inner support frame (5) provide radially slideway (51) offer direction slide power and the direction of displacement of this inner support frame (5) is parallel with the diametric(al) of described petroleum casing pipe, described outer support frame (6) is also slidably connected with described main bracing frame (10), and the axis being parallel of this glide direction and described petroleum casing pipe.
2. the inner slotting device of a kind of petroleum casing pipe according to claim 1, it is characterized in that: described inwall supporting component comprises clamping brace block (7) and hydraulic cylinder (9), (10) have connecting hole to described main bracing frame, described clamping brace block (7) is connected to the outside of described main bracing frame (10), and described hydraulic cylinder (9) is placed in the inside of this main bracing frame (10) and the piston rod of this hydraulic cylinder (9) is connected with described clamping brace block (7) by connecting hole.
3. the inner slotting device of a kind of petroleum casing pipe according to claim 1 and 2, is characterized in that: the axis bilateral symmetry of described main bracing frame (10) sets up multiple connecting hole.
4. the inner slotting device of a kind of petroleum casing pipe according to claim 1, it is characterized in that: described main bracing frame (10) is arc frame body, the opening part of this main bracing frame (10) sets up position corresponding with cutter blade (4).
5. the inner slotting device of a kind of petroleum casing pipe according to claim 1, it is characterized in that: described rotational power part comprises the supporting worm gear (1) set up and worm screw (2), and described worm gear (1) engages with described cutting gear (3).
6. the inner slotting device of a kind of petroleum casing pipe according to claim 1, it is characterized in that: the feed screw nut that described radial force piece comprises radial feed screw mandrel (8) and is mated, described feed screw nut and described radial slideway (51) are slidably connected, and the axis angle offering direction and described radial feed screw mandrel (8) of this radial slideway (51) is acute angle.
7. the inner slotting device of a kind of petroleum casing pipe according to claim 1 or 6, is characterized in that: described outer support frame (6) is for U-shaped support body and be placed on the outside of described inner support frame (5).
8. the inner slotting device of a kind of petroleum casing pipe according to claim 1, it is characterized in that: the outside of described outer support frame (6) has support chute, the madial wall of described main bracing frame (1) is provided with axial slider (12), and described axial slider (12) to be placed in described support chute and to be slidably connected with it.
9. the inner slotting device of a kind of petroleum casing pipe according to claim 1, is characterized in that: the longitudinal section of the blade of described cutter blade (4) is trapezoidal faces and the upper base of this trapezoidal faces and petroleum casing pipe inwall vicinity.
10. the inner slotting device of a kind of petroleum casing pipe according to claim 9, is characterized in that: described cutter blade (4) is superposed by the blade that multiple diameter is different and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510834246.3A CN105252055A (en) | 2015-11-25 | 2015-11-25 | Internal slitting device of petroleum casing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510834246.3A CN105252055A (en) | 2015-11-25 | 2015-11-25 | Internal slitting device of petroleum casing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105252055A true CN105252055A (en) | 2016-01-20 |
Family
ID=55092149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510834246.3A Pending CN105252055A (en) | 2015-11-25 | 2015-11-25 | Internal slitting device of petroleum casing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105252055A (en) |
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2015
- 2015-11-25 CN CN201510834246.3A patent/CN105252055A/en active Pending
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160120 |
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| WD01 | Invention patent application deemed withdrawn after publication |