CN202047799U - Foam metal composite sand prevention structure and liquid extraction pipe - Google Patents
Foam metal composite sand prevention structure and liquid extraction pipe Download PDFInfo
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- CN202047799U CN202047799U CN2011201579649U CN201120157964U CN202047799U CN 202047799 U CN202047799 U CN 202047799U CN 2011201579649 U CN2011201579649 U CN 2011201579649U CN 201120157964 U CN201120157964 U CN 201120157964U CN 202047799 U CN202047799 U CN 202047799U
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- foam metal
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- prevention structure
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Abstract
The utility model provides a foam metal composite sand prevention structure and a liquid extraction pipe. The foam metal composite sand prevention structure is sleeved at the external of a base pipe, the foam metal composite sand prevention structure at least comprises: a foam metal sand prevention layer made of foam metal. The liquid extraction pipe comprises a base pipe and the foam metal composite sand prevention structure, and the foam metal composite sand prevention structure is sleeved at the external of the base pipe. The sand prevention structure is advantaged by sand prevention effect of gravel feeling, structure strength of wire winding metal net, strong capability of sand receiving, small flow resistance, better protection effect for sand grains with grain size of more than 60 micrometers, and capability of cleaning well without moving pipe column when cooperated for well cleaning technology, further improving sand prevention effect.
Description
Technical field
The utility model relates to a kind of oil well or well sand preventing tool, is compounded in the outer Liquid extracting pipe that forms a kind of foam metal composite sand prevention structure and have this structure of parent tube in particular to foam metal.
Background technology
During oil recovery, usually need be by the purpose that various anti-layers of sand reach sand control is set outside parent tube.At present, conventional machinery sand-preventing process in oil field has gravel filling sand prevention process, wire-wrapped screen sand-preventing process, screen sand control technology, metal sintering poromerics sand-preventing process and metallic fiber porous piece sand-preventing process etc.Its cobblestone fill process is loose owing to gravel, arrange reasons such as loose, and it is short to exist useful life, and construction is complicated, can't backwash etc. shortcoming.Wrapping wire pipe sand-preventing process and screen sand control technology exist anti-flour sand weak effect, and slit or hole are easily by shortcomings such as oil reservoir fine sand obstructions.Adopt metal sintering poromerics sand-preventing process and metallic fiber porous piece sand-preventing process on intensity, degree of porosity, processing and fabricating, liquid communication effect and sand controlling result, shortcoming to be arranged also.
For example, U.S. Pat 5909773A discloses the filter in a kind of oil well, this filter mainly uses metal powder sintered metal micro-holes material that forms (being metal sintering poromerics or sintered microporous metal) or metallic fiber, and wherein sintered microporous metal is the metalwork that has hole that directly metal dust is produced through processes such as compacting sinterings.Because metal micro-holes material or metallic fiber mainly play two-dimentional filtration, the liquid through performance is relatively poor.
Is example with the metal micro-holes material as filtration beds, as shown in Figure 1, comprise a plurality of micropores unit E in the filtration beds that the metal micro-holes material forms, the sidewall of micropore unit E is a metal, stop liquid to flow out, the two ends of micropore unit E are the access way in hole, liquid flows to from an end of micropore, flow out from the other end, promptly flow to, flow out from the C direction, for a micropore E from the B direction, liquid flows to and the direction that flows out is limited, have only a direction, for the whole filtration beds that is formed by the metal micro-holes material, the arragement direction of each micropore is regular, liquid flows to and the direction that flows out also is regular, promptly is straight line, two dimension, single flow direction.Even arranging of each micropore is rambling, liquid flows to and the direction that flows out also is two-dimentional, single flow direction, and only route is more tortuous, and the liquid through performance is poorer.Because liquid flows to and the direction that flows out is two-dimentional, single flow direction, the restricted in flow of liquid has influenced the permeability and the flowability of liquid.For the filtration beds that metallic fiber is done, the linearity of metallic fiber, directionality are more obvious, liquid flow to and the direction that flows out especially two dimension, single.So at present, the through performance of the filtration beds that metal material is made is relatively poor.
In addition, this United States Patent (USP) adopts right angle wire lath (single grid is the wire lath that rectangle is formed by connecting) as the water conservancy diversion net, this right angle wire lath can only make liquid pass through along the hole direction of grid, liquid is passed through from the direction that the hole with grid is other angles, it covers on the parent tube can only produce horizontal circulation area, do not have the longitudinal stream kinetic force, the water conservancy diversion effect is bad.
The utility model content
The utility model provides a kind of foam metal composite sand prevention structure, to solve the problem of sand control.On this basis, the utility model also solves relatively poor problem, the bad problem of water conservancy diversion effect of through performance of the filtration beds that existing metal material makes.
For this reason, the utility model proposes a kind of foam metal composite sand prevention structure, described foam metal composite sand prevention structure is set in outside the parent tube, and described foam metal composite sand prevention structure comprises at least: the foam metal that foam metal is made is prevented layer of sand.
Further, described foam metal composite sand prevention structure also comprises the water conservancy diversion net, and described water conservancy diversion net is located at outside the described parent tube, and the anti-layer of sand of described foam metal is set in outside the described water conservancy diversion net.
Further, described foam metal composite sand prevention structure also comprises seat type net, and described seat type network folder is located between described water conservancy diversion net and the anti-layer of sand of described foam metal.
Further, described foam metal composite sand prevention structure also comprises: be set in the stationary pipes of the outer anti-layer of sand of fastening described foam metal of the anti-layer of sand of described foam metal, the tube wall of described stationary pipes is provided with the liquid communication passage.
Further, described stationary pipes is the welded tube with punching.
Further, the anti-layer of sand of described foam metal is a single layer structure.
Further, the anti-layer of sand of described foam metal is a sandwich construction, and the anti-layer of sand of described foam metal comprises: first order filter sand layer is arranged on the outside away from described parent tube; Second level filter sand layer is sheathed in the described first order filter sand layer.
Further, the anti-layer of sand of described foam metal also comprises: third level filter sand layer is sheathed in the filter sand layer of the described second level.
Further, described third level filter sand layer is set in outside the described water conservancy diversion net, and described stationary pipes is set in outside the described first order filter sand layer.
Further, the outer wall of described parent tube is provided with welding base, and the anti-layer of sand of described stationary pipes and described foam metal is welded on the described welding base.
Further, described foam metal density is more than or equal to 1.6g/cm
3, degree of porosity is smaller or equal to 80%.
Further, the thickness of described third level filter sand layer and described second level filter sand layer is more than or equal to 1mm, and the thickness of described first order filter sand layer is smaller or equal to 1mm.
Further, the manufacturing process of the anti-layer of sand of described foam metal comprises: with the polyurethane sponge conductionization of different aperture degree, deposit metal in sponge muscle surface by electro-deposition.
Further, described water conservancy diversion net is stamped to form by metal sheet, and along pressing direction, described metal plate shape is in depression, and described depression has along the passage of the direction vertical with described pressing direction.
The utility model also provides a kind of Liquid extracting pipe, and the Liquid extracting pipe comprises parent tube and foam metal composite sand prevention structure as previously described, and described foam metal composite sand prevention structure is set in outside the parent tube.
The anti-layer of sand of the foam metal that the utility model adopts foam metal to make, the anti-layer of sand of foam metal can play good sand controlling result, simultaneously, and with respect to sintered microporous metal or metallic fiber, foam metal prevents that layer of sand appearance sand ability is strong, it is little to cross flow resistance, and the liquid permeability is good.Because it is strong to hold the sand ability, for the liquid that contains same sand grains concentration, the anti-layer of sand of foam metal can hold more sand grains and be unlikely to stop up, therefore can see through more liquid (for example oil), that is to say, for the liquid of gathering same capability, foam metal is prevented that the frequency of layer of sand long service life, replacing is few, is reduced duration of well flushing, and the anti-layer of sand of foam metal cooperates the technology for washing well can the fixed tubular column well-flushing, further improves sand controlling result and production efficiency, reduces repair density.
In addition, the anti-layer of sand of foam metal is three-dimensional sand control structure, and liquid can be not limited to the pass-through mode on plane, almost can flow out arbitrarily from all angles in space, like this, has increased the permeability of liquid, has increased the output flow of liquid.
Description of drawings
Fig. 1 is the partial structurtes schematic diagram of existing sintered microporous metal;
Fig. 2 is the longitudinal profile schematic diagram according to the foam metal composite sand prevention structure of the utility model embodiment;
Fig. 3 is the schematic diagram of the part section structure at A-A place among Fig. 2;
Fig. 4 is the partial structurtes schematic diagram of foam metal of the present utility model.
The drawing reference numeral explanation:
1-parent tube 2-stationary pipes 3-first order filter sand layer 4-second level filter sand layer
5-third level filter sand layer 6-seat type net 7-water conservancy diversion net 8-welding base
The outer pod apertures 10-internal channel A-foam summit of 9-AA-foam seamed edge
B-liquid inflow direction C-liquid flows out direction E-micropore cells D-foam cell
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.
As shown in Figures 2 and 3, the utility model proposes a kind of foam metal composite sand prevention structure, described foam metal composite sand prevention structure is set in outside the parent tube 1, and described foam metal composite sand prevention structure comprises at least: the foam metal that foam metal is made is prevented layer of sand.
The manufacturing process of the anti-layer of sand of described foam metal comprises: the polyurethane sponge conductionization processing with the different aperture degree deposits metal on the sponge high temperature sintering reinforcement electrodeposited coating and with the sponge burn off by electro-deposition.The manufacturing process of foam metal has been prior art, does not repeat them here.The foam metal of Xing Chenging is different from sintered microporous metal or metallic fiber like this, in technology, and the physical and mechanical properties of material, or even all obviously different on the outward appearance, feel.
As shown in Figure 4, among the foam cell D, foam seamed edge AA is formed at sponge muscle surface, when high temperature sintering strengthen electrodeposited coating and with the sponge burn off after, foam seamed edge AA is for electroplating and through the metal material of oversintering, foam seamed edge AA intersects at foam summit A, outside the foam-expelling seamed edge AA, other places are cavity or space among the foam cell D, and foam cell D is equivalent to the space framework that surrounded by foam seamed edge AA, sand grains is blocked and can not see through by foam seamed edge AA, thereby foam seamed edge AA plays the sand control effect; Liquid flows into from the B direction, outside foam-expelling seamed edge AA among the foam cell D, other places are cavity or space, thereby the outflow direction C of liquid can be all directions, like this, when playing the sand control effect, the anti-layer of sand of foam metal can have better permeability, and promptly the anti-layer of sand of foam metal has three-dimensional sand control and the three-dimensional performance that sees through.
With respect to sintered microporous metal or metallic fiber, foam metal prevents that layer of sand appearance sand ability is strong, it is little to cross flow resistance, and the liquid permeability is good.Because it is strong to hold the sand ability, for the liquid that contains same sand grains concentration, the anti-layer of sand of foam metal can hold more sand grains and be unlikely to stop up, and therefore can see through more liquid, that is to say, for the liquid of gathering same capability, foam metal is prevented that the frequency of layer of sand long service life, replacing is few, is reduced duration of well flushing, and the anti-layer of sand of foam metal cooperates the technology for washing well can the fixed tubular column well-flushing, and well-flushing is simple, further improve sand controlling result and production efficiency, reduce repair density.
Further, as shown in Figures 2 and 3, described foam metal composite sand prevention structure also comprises water conservancy diversion net 7, and described water conservancy diversion net 7 is set in outside the described parent tube 1, and the anti-layer of sand of described foam metal is set in outside the described water conservancy diversion net 7.Process water conservancy diversion net 7 carried out water conservancy diversion again, current-sharing enters in the parent tube 1 after liquid (oil) filtered through the anti-layer of sand of foam metal.
Further, as shown in Figures 2 and 3, described water conservancy diversion net 7 is stamped to form by metal sheet, and along pressing direction, described metal plate shape is in depression, and described depression has along the passage of the direction vertical with described pressing direction.For example, a metal sheet horizontal positioned, pressing direction is a vertical direction, the part that is stamped is not thrust during punching press, be i.e. do not form vertical through hole during punching press, but make the part that is stamped still keep certain being connected with metal sheet, from vertical direction, punching press place is depression rather than through hole just, but from level angle, punching press place is communicated with, form passage, because the flow direction at the level angle passage can have multiple choices, therefore, liquid enters depression from vertical direction, flow out from a plurality of direction levels, such water conservancy diversion net not only has horizontal negotiability, has more the longitudinal stream kinetic force, the water conservancy diversion better effects if.
Further, as shown in Figures 2 and 3, described foam metal composite sand prevention structure also comprises seat type net 6, and described seat type net 6 is folded between described water conservancy diversion net 7 and the anti-layer of sand of described foam metal.The structural strength that can have like this, the wrapping wire wire lath.
Further, as shown in Figures 2 and 3, described foam metal composite sand prevention structure also comprises: be set in the stationary pipes 2 of the outer anti-layer of sand of fastening described foam metal of the anti-layer of sand of described foam metal, the tube wall of described stationary pipes 2 is provided with the liquid communication passage.The anti-layer of sand of foam metal is fixed on outside the parent tube 1 by stationary pipes 2, and is fixing more stable.Further, described stationary pipes 2 is for having the welded tube of punching, for example the steel pipe that forms by spiral welding and go out punching.
The anti-layer of sand of described foam metal can be single layer structure, also can be sandwich construction.For ground condition complexity, environment that the sand control difficulty is big, adopt sandwich construction usually, promptly adopt a plurality of anti-layers of sand, wherein at least two anti-layer of sand degree of porosity differences.
Preferably, as shown in Figures 2 and 3, when the anti-layer of sand of described foam metal was sandwich construction, the anti-layer of sand of described foam metal comprises: first order filter sand layer 3 was arranged on the outside away from described parent tube 1; Second level filter sand layer 4 is sheathed in the described first order filter sand layer 3.First order filter sand layer 3 is generally made by high strength macrovoid foam metal, plays flow rate of liquid that reduces output and the effect of filtering coarse sand, and second level filter sand layer 4 carries out secondary filter.
Further, as shown in Figures 2 and 3, the anti-layer of sand of described foam metal also comprises: third level filter sand layer 5 is sheathed in the described second level filter sand layer 4.Third level filter sand layer 5 and second level filter sand layer 4 utilize complex technique to make by the high-density foam metal of different aperture degree, and the minor diameter sand grains is deposited in to form in third level filter sand layer 5 and the second level filter sand layer 4 stablizes three-dimensional filter sand structure, and it is strong to hold the sand ability.Liquid enters output ground in the parent tube 1 through the internal channel 10 of parent tube 1 sidewall.The sandwich construction of the anti-layer of sand of foam metal can be by adjusting foam metal itself aperture and composite mode adapt to the sand control needs of different working conditions.
Further, the thickness of described third level filter sand layer 5 and described second level filter sand layer 4 is more than or equal to 1mm, and the thickness of described first order filter sand layer 3 is smaller or equal to 1mm.Can form desirable three-dimensional filter sand structure like this, can hold more minor diameter sand grains in third level filter sand layer 5 and the second level filter sand layer 4, it is stronger to hold the sand ability.In addition, this three layers of sand control structure all have protection effect preferably to the above grains of sand of particle diameter 60 μ.
Further, as shown in Figures 2 and 3, described third level filter sand layer 5 is set in outside the described water conservancy diversion net 7, and described stationary pipes 2 is set in outside the described first order filter sand layer 3.Be that the anti-layer of sand of foam metal is fixed up fixing-stable by stationary pipes 2 and water conservancy diversion net 7.
Further, as shown in Figure 2, the outer wall of described parent tube 1 is provided with welding base 8, and described stationary pipes 2 is welded on the described welding base 8 with the anti-layer of sand of described foam metal.Anti-layer of sand of foam metal and seat type the net mode by melting welding respectively are compounded in parent tube 1 skin and use as sand prevention material.
Further, described foam metal density is more than or equal to 1.6g/cm
3, degree of porosity is smaller or equal to 80%.This foam metal density is greater than general foam metal, and degree of porosity is less than general foam metal, and such foam metal degree of porosity is more even, and the through-hole rate height is fit to filter.Preferably, foam metal density is 2g/cm
3
As shown in Figure 2, the utility model also provides a kind of Liquid extracting pipe, and the Liquid extracting pipe comprises parent tube and foam metal composite sand prevention structure as previously described, and described foam metal composite sand prevention structure is set in outside the parent tube.This Liquid extracting pipe for example is an oil pipe, also can be the well casing as sink wells.
Sand control structure of the present utility model has the sand controlling result that gravel is filled, and has the structural strength of wrapping wire wire lath again; Appearance sand ability is strong, flow resistance is little excessively, and the above grains of sand of particle diameter 60 μ are all had protection effect preferably; Cooperate the technology for washing well can the fixed tubular column well-flushing, further improve sand controlling result.
Introduce operating principle of the present utility model below: the anti-layer of sand (comprising filter sand layers at different levels) of water conservancy diversion net 7, seat type net 6 and foam metal, stationary pipes 2 are welded on the welding base of parent tube 1, the internal channel 10 that through hole or the passage of liquid (for example oil) by above-mentioned each layer enters into parent tube 1 enters output ground in the parent tube 1.Foam metal prevents that layer of sand appearance sand ability is strong, it is little to cross flow resistance, and the liquid permeability is good.After long-time the use, the anti-layer of sand of foam metal will produce situations such as hole obstruction, therefore need the cooperation technology for washing well from interior by outer flushing.Get rid of and stop up sand grains.With respect to other sand prevention materials, foam metal is prevented that the frequency of layer of sand long service life, replacing is few, is reduced duration of well flushing.
The above only is the schematic specific embodiment of the utility model, is not in order to limit scope of the present utility model.For each ingredient of the present utility model can make up under the condition of not conflicting mutually; any those skilled in the art; equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (13)
1. a foam metal composite sand prevention structure is characterized in that, described foam metal composite sand prevention structure is set in outside the parent tube, and described foam metal composite sand prevention structure comprises at least: the foam metal that foam metal is made is prevented layer of sand.
2. foam metal composite sand prevention structure as claimed in claim 1 is characterized in that, described foam metal composite sand prevention structure also comprises the water conservancy diversion net, and described water conservancy diversion net is located at outside the described parent tube, and the anti-layer of sand of described foam metal is set in outside the described water conservancy diversion net.
3. foam metal composite sand prevention structure as claimed in claim 2 is characterized in that, described foam metal composite sand prevention structure also comprises seat type net, and described seat type network folder is located between described water conservancy diversion net and the anti-layer of sand of described foam metal.
4. foam metal composite sand prevention structure as claimed in claim 2, it is characterized in that, described foam metal composite sand prevention structure also comprises: be set in the stationary pipes of the outer anti-layer of sand of fastening described foam metal of the anti-layer of sand of described foam metal, the tube wall of described stationary pipes is provided with the liquid communication passage.
5. foam metal composite sand prevention structure as claimed in claim 4 is characterized in that described stationary pipes is the welded tube with punching.
6. foam metal composite sand prevention structure as claimed in claim 1 is characterized in that, the anti-layer of sand of described foam metal is a single layer structure.
7. foam metal composite sand prevention structure as claimed in claim 1 is characterized in that, the anti-layer of sand of described foam metal is a sandwich construction, and the anti-layer of sand of described foam metal comprises: first order filter sand layer is arranged on the outside away from described parent tube; Second level filter sand layer is sheathed in the described first order filter sand layer.
8. foam metal composite sand prevention structure as claimed in claim 7 is characterized in that, the anti-layer of sand of described foam metal also comprises: third level filter sand layer is sheathed in the filter sand layer of the described second level.
9. foam metal composite sand prevention structure as claimed in claim 8 is characterized in that, described third level filter sand layer is set in outside the described water conservancy diversion net, and described stationary pipes is set in outside the described first order filter sand layer.
10. foam metal composite sand prevention structure as claimed in claim 4 is characterized in that the outer wall of described parent tube is provided with welding base, and the anti-layer of sand of described stationary pipes and described foam metal is welded on the described welding base.
11. foam metal composite sand prevention structure as claimed in claim 1 is characterized in that described foam metal density is more than or equal to 1.6g/cm
3, degree of porosity is smaller or equal to 80%.
12. foam metal composite sand prevention structure as claimed in claim 2 is characterized in that described water conservancy diversion net is stamped to form by metal sheet, along pressing direction, described metal plate shape is in depression, and described depression has along the passage vertical with described pressing direction.
13. a Liquid extracting pipe is characterized in that, comprises parent tube and as each described foam metal composite sand prevention structure in the claim 1 to 12, described foam metal composite sand prevention structure is set in outside the parent tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201579649U CN202047799U (en) | 2011-05-17 | 2011-05-17 | Foam metal composite sand prevention structure and liquid extraction pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201579649U CN202047799U (en) | 2011-05-17 | 2011-05-17 | Foam metal composite sand prevention structure and liquid extraction pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202047799U true CN202047799U (en) | 2011-11-23 |
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ID=44988110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201579649U Expired - Lifetime CN202047799U (en) | 2011-05-17 | 2011-05-17 | Foam metal composite sand prevention structure and liquid extraction pipe |
Country Status (1)
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|---|---|
| CN (1) | CN202047799U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220857A (en) * | 2011-05-17 | 2011-10-19 | 中国石油天然气股份有限公司 | Foam metal composite sand prevention structure and liquid extracting pipe |
| WO2017193501A1 (en) * | 2016-05-11 | 2017-11-16 | 四川行之智汇知识产权运营有限公司 | Sand control screen pipe for horizontal well completion |
| CN112502674A (en) * | 2021-02-08 | 2021-03-16 | 东营市海天自动化工程有限责任公司 | Filling tool for oil field operation |
-
2011
- 2011-05-17 CN CN2011201579649U patent/CN202047799U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220857A (en) * | 2011-05-17 | 2011-10-19 | 中国石油天然气股份有限公司 | Foam metal composite sand prevention structure and liquid extracting pipe |
| WO2017193501A1 (en) * | 2016-05-11 | 2017-11-16 | 四川行之智汇知识产权运营有限公司 | Sand control screen pipe for horizontal well completion |
| CN112502674A (en) * | 2021-02-08 | 2021-03-16 | 东营市海天自动化工程有限责任公司 | Filling tool for oil field operation |
| CN112502674B (en) * | 2021-02-08 | 2021-06-11 | 胜利油田东方实业投资集团有限责任公司 | Filling tool for oil field operation |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20111123 |
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