CN100496841C - Method for processing sieve tube composite seam - Google Patents
Method for processing sieve tube composite seam Download PDFInfo
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- CN100496841C CN100496841C CNB2007100161709A CN200710016170A CN100496841C CN 100496841 C CN100496841 C CN 100496841C CN B2007100161709 A CNB2007100161709 A CN B2007100161709A CN 200710016170 A CN200710016170 A CN 200710016170A CN 100496841 C CN100496841 C CN 100496841C
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- seam
- plasma
- sieve tube
- tube composite
- oil pipe
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- 238000000034 method Methods 0.000 title claims description 22
- 239000002131 composite material Substances 0.000 title claims description 14
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 8
- 238000003754 machining Methods 0.000 claims abstract description 7
- 238000003672 processing method Methods 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000002679 ablation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract 2
- 238000005530 etching Methods 0.000 abstract 1
- 239000003027 oil sand Substances 0.000 abstract 1
- 238000003698 laser cutting Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000011797 cavity material Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
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- Arc Welding In General (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention relates to oil sand control screen complex sealing. The sheet tool electrode and the oil pipe connect with the positive and negative side of the controllable plasma, using discharged micro fine plasma high temperature etching for machining. Through the controlling of plasma energy and strength and frequency of the oscillating electromagnetic field, allowing the energy changing based on the preset rules, two sides of the plasma post generating regular reciprocating oscillation to realize the sealing machining. It can cut complex seal with outside narrow and inside wide one, featuring in high machining precision and low in cost.
Description
Technical field
The invention belongs to field of machining, relate to a kind of sand-preventing petroleum sieve tube composite seam processing method of (finger outside managing) to managing the wide seam that increases by multistage linearity or non-linear relation of inseam.
Background technology
Cutting seam sieve tube is the most widely used a kind of sand preventing tool at present domestic and international oil field, it have simple in structure, with low cost, flow resistance is little, the intensity advantages of higher, can be used for the sand control of the oil well such as straight well, inclined shaft, Multilateral Wells, horizontal well, sidetracked hole of petroleum industry.
Screen casing processing method at present both at home and abroad commonly used has two kinds of machine cuts and laser cutting methods.The machine cuts method is mainly used in cutting slit width greater than the rectangular slits more than the 0.4mm (referring to outside managing to the seam of managing the wide unanimity of inseam), and the suface processing quality and the precision of seam are all relatively poor, and this The Application of Technology scope is reducing gradually.Laser cutting is a kind of cutting seam sieve tube processing method the most commonly used both at home and abroad at present, mainly cuts the rectangular slits cutting seam sieve tube.Screen casing is because relative volume is less, and area of dissipation is little, during laser cutting temperature rise very fast, thermal field complexity, cooling difficulty, be easy to dry slag; Because the speed of incision when cutting out is different with cutting speed, be easy to cut out than the wide bigger hole of seam at the seam two ends, promptly generation " match end " influences sand controlling result; There is heat affected layer in seam surface after the laser cutting, and the surface is more coarse; Also there are defectives such as equipment and processing charges costliness in laser cutting in addition.Adopt the trapezoidal seam of the outer narrow inner width of laser cutting very difficult, at first,, be difficult to reach the angle of trapezoidal seam requirement by adjusting technological parameters such as laser power, focal position, cutting speed, auxiliary tolerance; Stitch the removal difficulty of cavity material simultaneously, guarantee trapezoidal angle though the method for available two cuttves cuts out two inclined-planes of trapezoidal seam, the two ends of seam cavity material still link to each other with body, and must stay next end face is the not removal body of Δ; And light beam must incident from the joint-cutting of first cutter when cutting second cutter, and this moment, light beam irradiates was on the face that first cutter has cut out.Because of this tilts in the face of optical axis, so variation has taken place optical property, and the air pressure of assist gas loses symmetrically, and the gas major part flows to the below on inclined plane, is very different with the laser cutting of normality; Simultaneously, the slag of trapezoidal seam is stifled serious, and the section part of therefore following joint-cutting is falling trapezoidal position, and bigger funnel-shaped opening meeting gathers more slag in the seam chamber.Can not eradicate the problems referred to above fully even adopt multi-shaft interlocked laser cutting method to process trapezoidal seam, the cutting expense that the cutting expense of trapezoidal seam is met far above rectangle, and percent defective is also much higher than the rectangular slits cutting.
At present, do not see the bibliographical information of sieve tube composite seam process technology both at home and abroad as yet.
Summary of the invention
The object of the present invention is to provide a kind of processing method of sieve tube composite seam.
Process principle of the present invention is: add man-hour, the sheet tool-electrode links to each other with the positive and negative electrode of plasma power supply respectively with oil pipe or sleeve pipe, tool-electrode is done the feeding working motion to processed oil pipe or sleeve pipe under the control of auto-feed servo drive system, utilize the elevated temperature heat ablation effect of the fine plasma of discharge generation between tool-electrode and oil pipe or sleeve pipe to process.By controlling the energy of plasma on the different depths of cut and adding the intensity and the frequency of oscillating electromagnetic fields, the energy that makes plasma is by predefined rule relationship change, plasma column produces back and forth beat motion clocklike to the both sides of seam, thereby realize the processing of sieve tube composite seam, oil pipe or sleeve pipe are processed into the screen casing with compound seam.
The present invention compares with screen casing cutting processing technology commonly used has following advantage:
1. pass through the energy of the plasma on the different working depths of control, and the intensity and the frequency that add electromagnetic field, can process the unmanageable compound seam of narrow inner width outward of other processing method easily.
2. whole seam is to utilize with the sheet tool-electrode primary feed that stitches equal length to process, and there is not " match end " phenomenon in the two ends of seam, have improved the intensity and the sand controlling result of screen casing effectively.
3. by adjusting process parameter and tool-electrode, can process the accurate slit screen casing of various different sizes easily.
Description of drawings
Fig. 1 is the process principle schematic diagram according to the designed sieve tube composite seam processing method that goes out of the present invention, and processed oil pipe among Fig. 1 or sleeve pipe are the profile of A-A position among Fig. 2.
Fig. 2 is oil pipe or sleeve pipe contour structures schematic diagram after the sieve tube composite seam processing method processing, also is the vertical view of processed oil pipe or sleeve pipe among Fig. 1.
The specific embodiment
Referring to Fig. 1.In the process principle schematic diagram of sieve tube composite seam processing method of the present invention, the 1st, controlled plasma power supply, be mainly used in the plasma process electric energy that provides controlled, this electric energy can be regulated automatically according to the variation of processing request and working depth, in order to process the compound seam of outer narrow inner width, along with the increase of working depth, the electric energy that controlled plasma power supply is exported increases by predefined rule relation, makes the wide expansion on request of seam; The 2nd, the electromagnetic viscosimeter head, the both sides of seam are respectively placed one, are mainly used in the electromagnetic field that produces alternation, make plasma clocklike to the both sides beat of seam, enlarge the width of processed seam on request; The 3rd, the sheet tool-electrode, its material is a red copper, link to each other with the positive pole of controlled plasma power supply, under the control action of auto-feed servo drive system, do feed motion, make between the end of tool-electrode and oil pipe or sleeve pipe and keep suitable plasma discharge machining gap to processed oil pipe or sleeve pipe; The 4th, the controllable electromagnetic oscillation power, being mainly used in provides two needed electric energy of electromagnetic viscosimeter head, this electric energy can be regulated automatically according to the variation of processing request and working depth, in order to process the compound seam of outer narrow inner width, increase along with working depth, the intensity of controllable electromagnetic oscillation power output electric energy and frequency increase by predefined rule relation, make two electromagnetic viscosimeter heads alternately produce the electromagnetic field of intensity and changeable frequency, make plasma clocklike to the both sides beat of seam, it is wide to enlarge seam on request; The 5th, processed oil pipe or sleeve pipe link to each other with the negative pole of controlled plasma power supply, are installed on the NC dividing head, and can make axial feed motion under the drive of workbench, to realize the radial and axial processing to whole oil pipe or sleeve pipe.
Referring to Fig. 2.The axis projection figure of sieve tube composite seam screen casing that processing method is processed of the present invention, the seam of each little rectangular frame for having processed among the figure, rectangular of black is the projection of machining tool.Behind seam of every processing, processed oil pipe or sleeve pipe change an angle on request, process one the circle after, oil pipe or sleeve pipe are moved forward the distance of a regulation, process next circle by processing request again, so go down, just can be processed into screen casing to oil pipe or sleeve pipe with compound seam.
Claims (4)
1. the processing method of a sieve tube composite seam, it is characterized in that: utilize with the sheet tool-electrode that stitches equal length and oil pipe or sleeve pipe between the fine plasma of change energy that produces the effect of high temperature ablation and add the comprehensive function of electromagnetic field, primary feed processes compound seam on oil pipe or sleeve pipe.
2. the processing method of sieve tube composite seam as claimed in claim 1, it is characterized in that: the sheet tool-electrode links to each other with the positive and negative electrode of controlled plasma power supply respectively with oil pipe or sleeve pipe, utilizes the high temperature ablation effect of the plasma of discharge generation between sheet tool-electrode end and oil pipe or sleeve pipe to process.
3. the processing method of sieve tube composite seam as claimed in claim 2 is characterized in that: the machining energy that controlled plasma power supply provides is along with the processing dark increase of seam and increase.
4. the processing method of sieve tube composite seam as claimed in claim 1, it is characterized in that: placed two electromagnetic viscosimeter heads by the both sides of joint-cutting, two electromagnetic viscosimeter heads alternately generate an electromagnetic field under the control action in electromagnetic viscosimeter source, and the intensity and the frequency that are generated an electromagnetic field increase along with the increase of working depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100161709A CN100496841C (en) | 2007-07-02 | 2007-07-02 | Method for processing sieve tube composite seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100161709A CN100496841C (en) | 2007-07-02 | 2007-07-02 | Method for processing sieve tube composite seam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101085485A CN101085485A (en) | 2007-12-12 |
| CN100496841C true CN100496841C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100161709A Active CN100496841C (en) | 2007-07-02 | 2007-07-02 | Method for processing sieve tube composite seam |
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| CN (1) | CN100496841C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205465A (en) * | 2010-03-31 | 2011-10-05 | 杨贺来 | Method for processing trapezoidal slit sieve tube |
| CN101890582A (en) * | 2010-06-30 | 2010-11-24 | 北京宏诚拓业科技发展有限公司 | Laser processing method for steel sieve tube slit |
| CN103567580A (en) * | 2012-08-08 | 2014-02-12 | 东营市东营区和光科技有限责任公司 | Linear cutting machine for screen seams in casing |
| CN104668890A (en) * | 2013-11-29 | 2015-06-03 | 天津中杰科技发展有限公司 | Combined machining method for combined slotted screen pipe |
| CN104669352A (en) * | 2013-12-02 | 2015-06-03 | 天津中杰科技发展有限公司 | Gap squeezing tool for step gap screen tube |
| CN104668891B (en) * | 2013-12-02 | 2017-06-30 | 天津中杰科技发展有限公司 | Step slit screen pipes combined machining method |
| CN105583535A (en) * | 2014-10-22 | 2016-05-18 | 天津中杰科技发展有限公司 | Combined machining method of combined-seam screen pipe |
| CN116100101B (en) * | 2023-03-31 | 2024-06-11 | 中南大学 | Machining method for hierarchical microstructure on surface of workpiece |
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2007
- 2007-07-02 CN CNB2007100161709A patent/CN100496841C/en active Active
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| CN101085485A (en) | 2007-12-12 |
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Inventor after: Liu Yonghong Inventor after: Ji Renjie Inventor after: Xie Huihua Inventor after: Cao Zefu Inventor after: Tian Xiangyuan Inventor after: Li Qingyun Inventor after: Li Xiaopeng Inventor before: Liu Yonghong Inventor before: Xie Huihua Inventor before: Cao Zefu Inventor before: Tian Xiangyuan Inventor before: Li Qingyun Inventor before: Li Xiaopeng Inventor before: Ji Renjie |