CN1061732C - Sand filter of metallic fibres - Google Patents
Sand filter of metallic fibres Download PDFInfo
- Publication number
- CN1061732C CN1061732C CN97104339A CN97104339A CN1061732C CN 1061732 C CN1061732 C CN 1061732C CN 97104339 A CN97104339 A CN 97104339A CN 97104339 A CN97104339 A CN 97104339A CN 1061732 C CN1061732 C CN 1061732C
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- metallic fiber
- filter element
- fiber filter
- parent tube
- sand
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Abstract
The present invention relates to a sand filter of metallic fibers, which is suitable for processes of the oil exploitation in industrial scale and the oil sand separation under a wall. The present invention comprises a base pipe, a pipe hole and a filtering element. The present invention is characterized in that the filtering element is a metal fiber porous block body prepared by a fiber metallurgy method; the average pore size of the filtering element can be controlled within a range of 50 to 200 micrometres; the filtering element is arranged in the pipe hole of the base pipe; a steel ring is added on the pipe hole; the steel ring is integrally welded with the base pipe for fixing the filtering element. The metal fiber filtering element comprises a manufacture technique of preparation, shearing, cleaning, annealing, felting, moulding, sintering and mechanical forming for metal fiber. The present invention has the advantages of high precision of filtering sand, high temperature resistance, high intensity, etc.
Description
The invention belongs to fibre metallurgy porous filter material sand control installation, be mainly used in downhole oil sand separation process in the exploitation of commercial scale stone stain.
Though various supporting machinery oil sand separation methods are arranged at present both at home and abroad, but what practical application was more is that cutting seam sieve tube sand control, gravel are filled sand control and metal silk flosssilk wadding sand control, yet, above-mentioned anti-sand method shows some deadly defects in actual applications separately: slot wrapping wire structure filtering accuracy is poor, be easy to damage fracture of wire in layer process going into the well and transfer, cause global failure and cost too high; Gravel is filled and metal silk flosssilk wadding sieve itself is not an overall structure, so intensity is low, easily comes off, and filtering accuracy can't be regenerated after can't guaranteeing, losing efficacy etc.For example its metal silk flosssilk wadding sieves of the described oil-sand eliminator of ZL94228501.8 itself is not an overall structure just, and filtering accuracy can't guarantee.
The object of the present invention is to provide a kind of filtering accuracy height, permeability is strong, and the intensity height does not come off, and can enlarge the sand filter of metallic fibres and the manufacture method of seepage area.
Based on above-mentioned purpose, metal sand filter of the present invention, comprise a parent tube, equally distributed pore and metallic fiber filter element on described parent tube, its characteristics are that the metallic fiber filter element with identical shaped interference fit is fitted in the pore on the parent tube tube wall, described metallic fiber filter element is the metal porous filtration block that the fibre metallurgy method is produced, outside at described metallic fiber filter element is contained in a steel loop in the described pore, the edge of steel loop and parent tube weldering are one, the average pore size of this metallic fiber filter element is 50～200 microns, the shape of metallic fiber filter element can be a lath-shaped, garden sheet or garden column, the material of metallic fiber filter element can be selected stainless steel for use, iron or carbon steel, copper or nickel, the diameter of selecting metallic fiber for use is 50～800 microns, and length is 3～20 millimeters.
The manufacture method of above-mentioned sand filter of metallic fibres comprises the preparation of parent tube and pore, the preparation of metallic fiber filter element, and the assembling of metallic fiber filter element and parent tube, concrete steps are as follows:
(1) metallic fiber is produced: generally adopt hubbing, extrusion is produced metallic fiber, and material can be stainless steel, iron or carbon steel, copper, nickel material, 50～800 microns of diameter phi.Along with the aperture and the permeability of the ascending variation of diameter, filtering material also increases step by step.
(2) shear: mechanical means is sheared, 3～20 millimeters of fibre lengths; Under the constant situation of other condition, fiber is longer; Its permeance property better.
(3) sieve and clean: by 40 orders～60 order vibrosieves, screen out metal oxide in small, broken bits and other impurity, and carry out ultrasonic wave through gasoline or organic solvent and clean, mainly remove greasy dirt.The oven dry of cleaning final vacuum;
(4) annealing:, eliminate metallic fiber work hardening and oxide on surface through 600～1000 ℃ of hydrogen or vacuum annealing 2 hours;
(5) batch mixing felt: in solution,, make it to be easy to moulding through fully mixing and the sedimentation felt;
The advance of (6) compression molding: molding apparatus--forcing press mainly shows production efficiency, rigidity, processing performance, automatic and mechanical degree aspect.The present invention adopts efficient mo(u)ldenpress compression molding, and briquetting pressure is 0.5 ton/centimetre 2～5 tons/centimetre 2;
(7) vacuum-sintering: under vacuum condition, carry out sintering, 1100 ℃～1350 ℃ of 1200 ℃～1390 ℃ iron of stainless steel fibre sintering temperature or carbon steel fiber sintering temperature.Vacuum is 10-1～10-5mmHg post, and the goods behind the sintering become the porous body of complete metallurgical binding.
(8) mechanical integer: goods carry out the secondary punching press in precision die.
As follows ready-made metallic fiber filter element of above-mentioned system and parent tube assembling: as at first on parent tube, evenly to beat several through holes, via bottoms is stayed a boss, hole shape can be garden shape, ellipse garden type or slab, metallic fiber filter block with identical shaped interference fit is fitted in the plurality of tube holes of parent tube then, in the outside of filter element is packed a steel loop into described pore, the edge and the parent tube of steel loop are welded together, make its one-tenth as a whole, the pore of whole parent tube can be according to the shape of metallic fiber filter element, size changes, therefore the seepage area of whole Zhi Jiguan can according to the metallic fiber filtering bodies in size, shape, arrangement mode is regulated and control.
The technical performance of strainer of the present invention is through actual measurement, and adopting stainless steel with metallic fiber is example.Relative coefficient of permeability K=1 * the 10-2 of metallic fiber filter element～1 * 10-5 liter/minute .Pacm2, degree of porosity 40～60%, tensile strength is 5～20 kilograms/millimeter 2, can bear maximum operating temperature: 500～550 ℃, actual work temperature: 350 ℃.
Compared with prior art, the invention has the advantages that:
(1) strainer is an overall structure, and promptly parent tube and metallic fiber filter element organic assembling are one, and filter sand precision height can change according to the layer of sand grit size, and respective design goes out to guarantee sand control, can reach the sand filter of maximum permeability energy again.
(2) vacuum-sintering fibre, after excessive temperature was handled, filter element became the porous body of complete metallurgical binding, so the intensity height, does not come off, high temperature resistant (500～550 ℃ of operating temperatures), the comparable similar structures screen casing of seepage area is big 1/5～1 times.
(3), thereby transfer layer and the difficulty of the back workover that lost efficacy after having alleviated the oil recovery sand control owing to have the described advantage in (1) (2).
(4) the present invention can make the reality that is designed to of big latus rectum sandpipe post.Solved the danger that sand washing is difficult and the sandpipe post is broken by card often in other anti-sand method screen casing.
(5) also for filter element after a period of time that brings in stops up, condition had been created in de-plugging to big latus rectum sand control pipe when production capacity descended, thereby had guaranteed that oil well keeps higher production capacity and long period of validity behind the sand control.
(6) by field operation practice, sand control technique easy construction provided by the present invention, the duration is short, success rate is high, alleviated operating personnel's labour intensity, greatly reduces cost simultaneously.
(7) wide with scope thoroughly, can be used for various oil, water straight well, also can be used for inclined shaft, horizontal well, sidetracked hole.To conventional recovery well, steam-stimulated well, vapour drive and etc. also all can be competent at.
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is the structural representation of sand filter of metallic fibres of the present invention.
Fig. 2 crosses A-A generalized section among sand filter Fig. 1 for metallic fiber of the present invention.
Fig. 3 is a metallic fiber filter element schematic diagram of the present invention.
Fig. 4 is a steel loop.
1 is parent tube among Fig. 1, Fig. 2, and 2 is the metallic fiber filter element, and 3 is steel loop, and 4 is steel loop and the objective solder joint of base.
Embodiment
Adopt technology of the present invention produce three batches of stainless steel metal fibre filter elements (external diameter φ=20 millimeter, high h 〉=7 millimeter) process system and mechanical property as follows:
Claims (7)
1, a kind of sand filter of metallic fibres, comprise a parent tube, equally distributed pore and metallic fiber filter element on described parent tube, it is characterized in that metallic fiber filter element with identical shaped interference fit is fitted in the pore on the parent tube tube wall, described metallic fiber filter element is metal porous that produces with the fibre metallurgy method, outside at described metallic fiber filter element is contained in a steel loop in the described pore, the edge of steel loop and parent tube weldering are one, and the average pore size of this metallic fiber filter element is 50～200 microns.
2, strainer according to claim 1 is characterized in that described metallic fiber is a stainless steel.
3, strainer according to claim 1 is characterized in that described metallic fiber is iron or carbon steel.
4, strainer according to claim 1 is characterized in that described metallic fiber is copper or nickel.
5, strainer according to claim 1, the diameter that it is characterized in that described metallic fiber is 50～800 microns, length is 3～20 millimeters.
6, strainer according to claim 1, the shape that it is characterized in that the metallic fiber filter element can be a lath-shaped, garden sheet or garden column.
7, a kind of method of making the described sand filter of metallic fibres of claim 1 comprises the preparation of parent tube and pore, the preparation of metallic fiber filter element, and the assembling of metallic fiber filter element and parent tube is characterized in that:
(1) metallic fiber is produced: adopt hubbing, extrusion is produced metallic fiber, and material can be stainless steel, iron or carbon steel, copper, nickel material, 50～800 microns of diameter phi.
(2) shear: metallic fiber is cut into 3～20 millimeters of length with mechanical means;
(3) sieve and clean: by 40 orders～60 order vibrosieves, screen out metal oxide in small, broken bits and impurity, and carry out ultrasonic wave through gasoline or organic solvent and clean, clean the final vacuum oven dry;
(4) annealing:, eliminate metallic fiber work hardening and oxide on surface through 600～1000 ℃ of hydrogen or vacuum annealing 2 hours;
(5) batch mixing felt: in solution,, make it to be easy to moulding through fully mixing the sedimentation felt;
(6) compression molding: adopt the mo(u)ldenpress compression molding, briquetting pressure is 0.5 ton/centimetre 2～5 tons/centimetre 2;
(7) vacuum-sintering: sintering under vacuum condition, vacuum is 10-1～10-5mmHg post, wherein adopting the stainless steel fibre sintering temperature is 1200 ℃～1390 ℃, and iron or carbon steel fiber sintering temperature are 1100～1350 ℃, and the goods behind the sintering become the porous body of complete metallurgical binding;
(8) mechanical integer: goods carry out the secondary punching press in precision die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97104339A CN1061732C (en) | 1997-05-23 | 1997-05-23 | Sand filter of metallic fibres |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97104339A CN1061732C (en) | 1997-05-23 | 1997-05-23 | Sand filter of metallic fibres |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1171484A CN1171484A (en) | 1998-01-28 |
| CN1061732C true CN1061732C (en) | 2001-02-07 |
Family
ID=5167278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97104339A Expired - Fee Related CN1061732C (en) | 1997-05-23 | 1997-05-23 | Sand filter of metallic fibres |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1061732C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070202001A1 (en) * | 2004-04-15 | 2007-08-30 | Nv Bekaert Sa | Method Of Manufacturing Of A Sintered Metal Fiber Medium |
| US7708076B2 (en) * | 2007-08-28 | 2010-05-04 | Baker Hughes Incorporated | Method of using a drill in sand control liner |
| CN101607157B (en) * | 2009-04-17 | 2012-02-08 | 河北小蜜蜂工具集团有限公司 | Method for manufacturing iron-chromium-aluminum metal fiber filter material |
| CN103692149B (en) * | 2012-09-27 | 2015-12-02 | 江苏威鹰机械有限公司 | Filter housings finish forge plastic forming production technology |
| CN103978216B (en) * | 2014-04-28 | 2016-07-27 | 苏州海普过滤分离科技有限公司 | A kind of method of continuous production sintered metal fiber filtering material and equipment thereof |
| CN103990321B (en) * | 2014-04-28 | 2015-10-28 | 苏州海普过滤分离科技有限公司 | A kind of wet preparation method of metallic fiber filter material and device thereof |
| CN105863580B (en) * | 2016-06-27 | 2018-04-10 | 东营市三和石油装备有限公司 | A kind of prefabrication type sand screen for having skeleton |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2057210U (en) * | 1989-11-10 | 1990-05-16 | 中原石油勘探局采油三厂 | Microporous ceramic sand filter |
| CN2082760U (en) * | 1991-04-03 | 1991-08-14 | 国营540厂 | Well head fine filter filtering element of water injection well |
| CN2207444Y (en) * | 1994-05-06 | 1995-09-13 | 李万夫 | Refractory and high pressure oil sand separator |
-
1997
- 1997-05-23 CN CN97104339A patent/CN1061732C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2057210U (en) * | 1989-11-10 | 1990-05-16 | 中原石油勘探局采油三厂 | Microporous ceramic sand filter |
| CN2082760U (en) * | 1991-04-03 | 1991-08-14 | 国营540厂 | Well head fine filter filtering element of water injection well |
| CN2207444Y (en) * | 1994-05-06 | 1995-09-13 | 李万夫 | Refractory and high pressure oil sand separator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1171484A (en) | 1998-01-28 |
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