CN105275418A - Internal cutting machine in oil casing - Google Patents
Internal cutting machine in oil casing Download PDFInfo
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- CN105275418A CN105275418A CN201510837192.6A CN201510837192A CN105275418A CN 105275418 A CN105275418 A CN 105275418A CN 201510837192 A CN201510837192 A CN 201510837192A CN 105275418 A CN105275418 A CN 105275418A
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- support frame
- casing pipe
- petroleum casing
- cutting
- cutting machine
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Abstract
The invention provides an internal cutting machine in an oil casing. The internal cutting machine in the oil casing comprises a main body supporting frame and a cutting mechanism, wherein the cutting mechanism is arranged in the main body supporting frame and comprises a milling blade, a cutting power assembly and a radial feeding assembly, the radial feeding assembly comprises an external supporting frame and a radial feeding oil cylinder, the external supporting frame is sleeved outside an internal supporting frame and is in sliding connection with the internal supporting frame, the external supporting frame is provided with a radial slideway, the radial feeding oil cylinder is connected with the internal supporting frame through the radial slideway and provides radial sliding power along the radial slideway, and the displacement direction of the internal supporting frame is in parallel with a diameter direction of the oil sleeve. Through the internal cutting machine, seam cutting processing can be carried out in the oil casing, without considering the milling blade, seam cutting efficiency can be guaranteed, through the processing mode, radial bounce of the milling blade during external processing can be avoided, and loss of the milling blade can be reduced.
Description
Technical field
The invention belongs to oil servicing unit field, especially relates to the inner cutting machine 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 alloy steel 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 machine, 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 cutting machine 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 cutting machine of petroleum casing pipe, it comprises main bracing frame and cutting mechanism;
Described cutting mechanism is placed in described main bracing frame, and it 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 feed oil cylinder, described outer support frame is placed on described inner support frame outside and is slidably connected with inner support frame, described outer support frame has radial slideway, described radial feed oil cylinder to be connected with described inner support frame by radial slideway and the power providing radially slideway to slide for this inner support frame, 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, also comprise inwall bearing assembly, it is inner that described main bracing frame is fixed on described petroleum casing pipe by inwall supporting component.
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, described rotational power part comprises motor gear, transition gear and hydraulic motor, described hydraulic motor provides the power rotated around himself axis for described motor gear, described cutting gear engage with described transition gear and described motor gear by transition gear for this cutting gear provides rotational power.
Further, it is outside and be connected with described inner support frame by tray that described radial feed oil cylinder is fixed on described outer support frame, this tray put with described radial slideway in and be slidably connected with it.
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 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 inside 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, and also can be made up of a blade simultaneously.
Further, two cutting gears clamp described cutter blade and are fixed in described inner support frame.
Relative to prior art, the inner cutting machine of the 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) the employing composite blade described in the invention and the structure design of the cutter blade formed 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 the overall structure schematic diagram of the inner cutting machine of the petroleum casing pipe described in the invention embodiment;
Fig. 2 is the cutter blade structural representation described in the invention embodiment.
Description of reference numerals:
1-transition gear; 2-motor gear; 3-cuts gear; 4-cutter blade; 41-point blade; 42-side edge portion; 5-inner support frame; 6-outer support frame; 7-clamping brace block; 8-radial feed oil cylinder; 9-hydraulic cylinder; 10-main bracing frame; 11-hydraulic motor; 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 shown in Figure 1, 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, generally four 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 comprise motor gear 2, transition gear 1 and hydraulic motor 11, described hydraulic motor 11 provides the power rotated around himself axis for described motor gear 2, described cutting gear 3 engage with described transition gear 1 and described motor gear 2 by transition gear 1 for this cutting gear 3 provides rotational power.
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 61, described radial force piece for described inner support frame 5 provide radially slideway 61 start 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 61 are slidably connected by screw shifting block 11, the axis angle offering direction and described radial feed screw mandrel 8 of this radial slideway 61 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 61 offer direction and be subjected to displacement, thus improve the position of whole cutting mechanism.
Also has a kind of form, described radial feed assembly comprises outer support frame 6 and radial feed oil cylinder 8, described outer support frame 6 is placed on described inner support frame 5 outside and is slidably connected with inner support frame 5, described outer support frame 6 has radial slideway, described radial feed oil cylinder 8 to be connected with described inner support frame 5 by radial slideway and the power providing radially slideway to slide for this inner support frame 5, and the direction of displacement of this inner support frame 5 is parallel with the diametric(al) of described petroleum casing pipe.
The form of structure 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 inside 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 2, 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 cutting machine of petroleum casing pipe, is characterized in that: comprise main bracing frame (10) and cutting mechanism;
Described cutting mechanism is placed in described main bracing frame (10), and it 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 feed oil cylinder (8), described outer support frame (6) is placed on described inner support frame (5) outside and is slidably connected with inner support frame (5), (6) have radial slideway to described outer support frame, described radial feed oil cylinder (8) to be connected with described inner support frame (5) by radial slideway and the power providing radially slideway to slide for this inner support frame (5), 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 cutting machine of petroleum casing pipe according to claim 1, is characterized in that: also comprise inwall bearing assembly, and it is inner that described main bracing frame (10) is fixed on described petroleum casing pipe by inwall supporting component.
3. the inner cutting machine of petroleum casing pipe according to claim 2, 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.
4. the inner cutting machine of petroleum casing pipe according to claim 1, it is characterized in that: described rotational power part comprises motor gear (2), transition gear (1) and hydraulic motor (11), described hydraulic motor (11) provides the power rotated around himself axis for described motor gear (2), described cutting gear (3) engage with described transition gear (1) and described motor gear (2) by transition gear (1) for this cutting gear (3) provides rotational power.
5. the inner cutting machine of petroleum casing pipe according to claim 1, it is characterized in that: it is outside and be connected with described inner support frame (5) by tray that described radial feed oil cylinder (8) is fixed on described outer support frame (6), this tray put with described radial slideway in and be slidably connected with it.
6. the inner cutting machine 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).
7. the inner cutting machine 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 inside wall of described main bracing frame (10) 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.
8. the inner cutting machine 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.
9. the inner cutting machine of the petroleum casing pipe according to claim 1 or 8, is characterized in that: described cutter blade (4) is superposed by the blade that multiple diameter is different and forms.
10. the inner cutting machine of petroleum casing pipe according to claim 1, is characterized in that: two cuttings gear (3) clamp described cutter blade (4) and are fixed in described inner support frame (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510837192.6A CN105275418A (en) | 2015-11-25 | 2015-11-25 | Internal cutting machine in oil casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510837192.6A CN105275418A (en) | 2015-11-25 | 2015-11-25 | Internal cutting machine in oil casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105275418A true CN105275418A (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510837192.6A Pending CN105275418A (en) | 2015-11-25 | 2015-11-25 | Internal cutting machine in oil casing |
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| CN (1) | CN105275418A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443286A (en) * | 2019-09-04 | 2021-03-05 | 中国石油化工股份有限公司 | Plasma cutting device and method for underground oil casing |
-
2015
- 2015-11-25 CN CN201510837192.6A patent/CN105275418A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443286A (en) * | 2019-09-04 | 2021-03-05 | 中国石油化工股份有限公司 | Plasma cutting device and method for underground oil casing |
| CN112443286B (en) * | 2019-09-04 | 2023-12-29 | 中国石油化工股份有限公司 | Underground oil casing plasma cutting device and method |
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Application publication date: 20160127 |