CN212147757U - Fatigue-resistant composite material continuous sucker rod and preparation device - Google Patents
Fatigue-resistant composite material continuous sucker rod and preparation device Download PDFInfo
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- CN212147757U CN212147757U CN201922140493.XU CN201922140493U CN212147757U CN 212147757 U CN212147757 U CN 212147757U CN 201922140493 U CN201922140493 U CN 201922140493U CN 212147757 U CN212147757 U CN 212147757U
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Abstract
The utility model provides a fatigue-resistant composite material sucker rod and preparation facilities, fatigue-resistant composite material sucker rod, its cross section structure combine transition layer, glass fiber reinforcement layer, glass fiber cloth layer from inside to outside for carbon fiber reinforcement layer, layer in proper order. The interlayer bonding transition layer is formed by mixing carbon fibers and glass fibers. The carbon fibers in the carbon fiber reinforced layer are arranged in the axial direction of the rod body of the continuous sucker rod; the glass fiber in the glass fiber reinforced layer is arranged in the axial direction of the rod body of the continuous sucker rod. The utility model discloses with corrosion and eccentric wear problem, the super deep well oil recovery problem of deep well in solving the oil field oil recovery production as the main objective, prepare out the sucker rod that bonding strength is high between the layer, fatigue-resistant, operation convenient to use.
Description
Technical Field
The utility model belongs to the technical field of the oil field oil production equipment and specifically relates to a fatigue-resistant combined material sucker rod in succession and preparation facilities.
Background
With the development of more and more complex oil reservoir types, the problems of corrosion and eccentric wear become problems to be solved urgently in the oil field oil extraction process due to the continuous increase of well depths and the continuous deterioration of well and mine environments. The composite material sucker rod has the advantages of light weight, high strength, corrosion resistance and the like, and has begun to gradually replace the traditional metal sucker rod.
The composite sucker rod adopted at present mainly comprises a glass fiber reinforced plastic sucker rod and a carbon fiber reinforced composite continuous sucker rod. The glass fiber reinforced plastic sucker rod is prepared by one-step molding of a pultrusion process of glass fiber reinforced thermosetting resin, is widely applied, but the glass fiber reinforced plastic sucker rod cannot meet the requirements along with the continuous improvement of the reliability requirement of modern oil extraction, and mainly has the following problems: the eccentric wear resistance is not good, the fatigue strength is not enough, and the glass fiber reinforced plastic sucker rod has a fixed length, and both ends are respectively provided with a metal joint, so the processing difficulty is high, and the price is high. In addition, the problems of serious eccentric wear of the coupling and the oil pipe due to the fact that the number of joints is large, the breaking probability is high, the piston effect is obvious and the problem is not solved. The carbon fiber reinforced composite material continuous sucker rod is researched for decades, and is developed from a rectangular-section pure carbon fiber reinforced strip-shaped structure to a round-section multilayer cladding rod body structure.
Chinese patent CN1461870 discloses a carbon fiber reinforced composite continuous sucker rod and its preparation method, which adopts carbon fiber as the reinforcing material, and is composed of transversely arranged aramid fiber or ultra-high molecular weight polyethylene fiber bundle and longitudinal glass fiber to form an integral cladding composite, mainly solving the problem of reinforcing the shearing strength between transverse layers of the sucker rod, thereby avoiding the longitudinal splitting of the sucker rod in the oil well, and simultaneously improving the eccentric wear resistance and strength of the rod body. However, the sucker rod adopts a one-time integral processing method of pultrusion and coating (comprising the working procedures of filament discharge, resin glue soaking, coating, preforming, curing and coiling), the coating layer is fiber fabric reinforced thermosetting resin, the material cost is increased, and the eccentric wear resistance of the fiber fabric coating layer is not ideal. In addition, because the cross section of the continuous sucker rod made of the carbon fiber reinforced composite material is rectangular or oval, and the thickness of the continuous sucker rod is only 3-5 mm, when special equipment is applied for well tripping operation, the material of the clamping part can not be selected almost, and only two-piece type clamping can be adopted, the left direction and the right direction can not be limited, and the phenomenon that the rod body deviates from the clamping part can be easily caused. Therefore, the clamping part of the special downhole operation equipment has larger structure and material development difficulty, becomes a technical bottleneck in the application of the carbon fiber reinforced composite continuous sucker rod, and limits the large-scale popularization and application of the product.
The invention patent CN200910272324.X discloses a continuous sucker rod, a method for pultrusion and coating a thermoplastic wear-resistant layer by using unidirectional reinforced fibers, and the process is complex and can not solve the problems of interlayer bonding strength and fatigue.
Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, to the utility model discloses more technical characteristics and the technical problem and the beneficial effect that will solve all do not have the technological inspiration in the above technical document that discloses.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model is to provide a fatigue-resistant composite material continuous sucker rod; the second purpose is to provide a device for preparing the fatigue-resistant multi-layer gradient composite continuous sucker rod, which is mainly used for solving the problems of corrosion and eccentric wear in oil extraction production of an oil field and the problem of deep well and ultra-deep well oil extraction and is used for preparing the sucker rod with high interlayer bonding strength, fatigue resistance and convenient operation and use.
One of the purposes of the utility model can be realized by the following technical measures:
the cross section structure of the fatigue-resistant composite material continuous sucker rod sequentially comprises a carbon fiber reinforced layer, an interlayer combination transition layer, a glass fiber reinforced layer and a glass fiber cloth layer from inside to outside.
One of the purposes of the utility model can be realized by the following technical measures:
the interlayer bonding transition layer is formed by mixing carbon fibers and glass fibers.
The carbon fibers in the carbon fiber reinforced layer are arranged in the axial direction of the rod body of the continuous sucker rod; the glass fiber in the glass fiber reinforced layer is arranged in the axial direction of the rod body of the continuous sucker rod.
The modulus of carbon fiber used in the carbon fiber reinforced layer and the interlayer bonding transition layer is more than 220GPa, the modulus of glass fiber used in the interlayer bonding transition layer and the glass fiber reinforced layer is more than 90GPa, and the glass fiber cloth used in the glass fiber cloth layer is +/-35 DEG biaxialCloth is oriented or triaxial cloth with the angle of +45 DEG/0 DEG/45 DEG, and the gram weight is 150-600 g/m2。
The interlayer bonding transition layer is prepared by mixing carbon fibers and glass fibers and then performing intermediate holes of a pre-forming yarn splitting plate.
The glass fiber reinforced layer is made of a glass fiber layer through outer layer holes of a preformed yarn separating plate.
The glass fiber cloth layer is prepared by the steps of enabling outer glass fiber cloth to pass through a cloth spreading plate, completely coating the outer glass fiber cloth, infiltrating resin into the outer glass fiber cloth layer through a high-pressure glue injection box, and then heating and curing the outer glass fiber cloth layer through an outer mold.
The second purpose of the utility model can be realized by the following technical measures:
this preparation facilities of continuous sucker rod of antifatigue multilayer gradual change combined material includes from preceding carbon fiber glue groove, carbon fiber mould, preforming dividing yarn board, exhibition cloth board, high-pressure injecting glue box, automatic compounding injecting glue machine, the outer solidification mould that sets gradually after to, its characterized in that, carbon fiber glue groove, carbon fiber mould, preforming dividing yarn board, exhibition cloth board, high-pressure injecting glue box, automatic compounding injecting glue machine, outer solidification mould, the centre bore of above-mentioned part is on a straight line, exhibition cloth board upper portion is the arc structure, and the round hole is seted up to the lower part.
Compared with the prior art, the utility model following beneficial technological effect has:
the utility model provides a continuous sucker rod to this sucker rod structural design goes out one set of complete processing equipment and process flow. The utility model can produce a fatigue-resistant composite material continuous sucker rod, reduces the interface stress difference by adding the transition layer between the carbon fiber layer and the glass fiber layer, improves the interlayer bonding strength, reduces the bending diameter, and has the advantages of light weight, high strength, fatigue resistance, strong bending resistance and the like; meanwhile, the high-modulus glass fiber endows the sucker rod with excellent tensile property, and only two joints are arranged at two ends of the continuous rod, so that the number of joints is greatly reduced, and the breaking probability and the piston effect are reduced. The Tg value of the continuous sucker rod is 120-240 ℃, the continuous length of the manufactured rod body is 300-5000 m, the diameter of the rod body is 12-28 mm, the maximum long-term use temperature is 80-160 ℃, and the tensile fatigue life is more than 1000 ten thousand times.
Equipment technology easy operation, production efficiency is high, has realized the continuous automated production of combined material sucker rod in succession.
The utility model is applied to lifting of deep wells, ultra-deep wells and corrosion wells, and can achieve remarkable effects in the aspects of deep extraction, load reduction, energy conservation, corrosion prevention, service life prolongation and the like.
Drawings
FIG. 1 is a schematic cross-sectional structure of an embodiment of the present invention;
FIG. 2 is a detail view of an interlayer bonding transition layer;
FIG. 3 is a schematic structural view of a manufacturing apparatus of the present invention;
FIG. 4 is a front view of the span plate;
FIG. 5 is a top view of FIG. 4;
fig. 6 is a view taken along direction a of fig. 4.
In the figure: a is a carbon fiber reinforced layer along the axial direction of the rod body, B is an interlayer combination transition layer formed by hybrid reinforcement of carbon fibers and glass fibers, B-1 is glass fibers, B-2 is carbon fibers, C is a glass fiber reinforced layer along the axial direction of the rod body, and D is glass fiber cloth;
carbon fiber glue groove 1, carbon fiber mould 2, carbon fiber and glass fiber mix 3, glass fiber 4, preforming yarn dividing plate 5, exhibition spreader 6, high-pressure injecting glue box 7, automatic compounding injecting glue machine 8, outer solidification mould 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a technical solution:
a fatigue-resistant composite material continuous sucker rod is characterized in that the cross section structure of the sucker rod sequentially comprises a carbon fiber reinforced layer A, an interlayer combination transition layer B, a glass fiber reinforced layer C and a glass fiber cloth layer D from inside to outside.
The interlayer bonding transition layer is formed by mixing carbon fibers and glass fibers.
The carbon fibers in the carbon fiber reinforced layer are arranged in the axial direction of the rod body of the continuous sucker rod; the glass fiber in the glass fiber reinforced layer is arranged in the axial direction of the rod body of the continuous sucker rod.
The modulus of carbon fibers used in the carbon fiber reinforced layer and the interlayer bonding transition layer is more than 220GPa, the modulus of glass fibers used in the interlayer bonding transition layer and the glass fiber reinforced layer is more than 90GPa, the glass fiber cloth used in the glass fiber cloth layer is +/-35 DEG biaxial cloth or +45 DEG/0 DEG/45 DEG triaxial cloth, and the gram weight is 150-600 g/m2。
According to fig. 3, a preparation facilities of continuous sucker rod of tired resistant multilayer gradual change combined material, include carbon fiber glue groove 1, carbon fiber mould 2, preforming yarn separating plate 5, exhibition cloth plate 6, high-pressure injecting glue box 7, automatic compounding injecting glue machine 8, the outer solidification mould 9 that set gradually from front to back, carbon fiber glue groove, carbon fiber mould, preforming yarn separating plate, exhibition cloth plate, high-pressure injecting glue box, automatic compounding injecting glue machine, outer solidification mould, the centre bore of above-mentioned part is on a straight line, exhibition cloth plate upper portion is the arc structure, and the round hole is seted up to the lower part. Circular complete coating can be realized.
The components involved in the preparation device, the resin used, the curing agent and other materials belong to the conventional technology in the field and can be directly applied.
Example 1:
soaking 190 bundles of T300-12K carbon fibers in epoxy resin in a carbon fiber glue tank (1), wherein the glue solution is prepared by heating resin and curing agent at a ratio of 100:120 in a carbon fiber mould (2) at a heating temperature of 120 ℃, the length of the mould is 500mm, a mixed layer of 30 bundles of T300-12K carbon fibers and 20 bundles of WS3000-2400tex glass fibers passes through a middle hole of a preformed yarn separating plate (5), and 80 bundles of WS3000-240The 0tex glass fiber layer passes through the outer layer holes of the preformed yarn separating plate (5), and the outer layer is 400g/m2After being completely coated by a cloth spreading plate (6), glass fiber cloth is soaked in resin by a high-pressure glue injection box (7), an automatic material mixing and glue injection machine (8) automatically mixes resin and a curing agent according to the ratio of 100:120, then the mixture is injected into the high-pressure glue injection box (7) under the pressure of 2MPa, and then the mixture is heated and cured by an outer layer mold (9) at the temperature of 150 ℃ or 195 ℃ and the speed of 0.25m/min to form the fatigue-resistant multilayer gradient composite continuous sucker rod with the diameter of 19mm and the Tg of 220 ℃.
Example 2:
according to the embodiment 1, the epoxy resin is used, the ratio of the resin to the curing agent is 100:100, the production speed is 20cm/min, the temperature of the carbon fiber mould is 100 ℃, the temperature of the outer layer mould (9) is heated and cured at 130 ℃ or 165 ℃, and the fatigue-resistant multilayer gradient composite material continuous sucker rod is formed, the diameter is 19mm, and the Tg is 125 ℃.
The Tg value refers to the glass transition temperature, which can be understood as the material softening temperature. Furthermore, the resin and the curing mould in the field need the curing agent which is a common material, belongs to the known technology, and belongs to the same resin and curing agent when preparing similar composite materials.
All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.
In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a fatigue-resistant combined material continuous sucker rod which characterized in that, its cross section structure is carbon fiber enhancement layer, interlayer combination transition layer, glass fiber enhancement layer, glass fiber cloth layer from inside to outside in proper order.
2. The continuous sucker rod of claim 1, wherein the interlayer bonding transition layer is formed by mixing carbon fibers and glass fibers.
3. The fatigue-resistant composite material continuous sucker rod of claim 1 or 2, wherein the carbon fibers in the carbon fiber reinforced layer are arranged in the axial direction of the rod body of the continuous sucker rod; the glass fiber in the glass fiber reinforced layer is arranged in the axial direction of the rod body of the continuous sucker rod.
4. The continuous sucker rod of claim 3, wherein the carbon fiber reinforced layer and the interlayer bonding transition layer have a carbon fiber modulus of 220GPa or more, the glass fiber reinforced layer and the glass fiber reinforced layer have a glass fiber modulus of 90GPa or more, the glass fiber cloth layer has a + -35 ° biaxial cloth or a +45 °/0 °/45 ° triaxial cloth, and a gram weight of 150-600 g/m2。
5. The continuous sucker rod of claim 1, wherein the interlayer bonding transition layer is made of carbon fiber and glass fiber mixed and then passes through the middle hole of the preformed yarn dividing plate.
6. The fatigue-resistant composite continuous sucker rod of claim 1, wherein the glass fiber reinforced layer is made of glass fiber layer passing through the outer hole of the preformed yarn separating plate.
7. The continuous sucker rod of claim 1, wherein the glass fiber cloth layer is prepared by coating an outer layer of glass fiber cloth with a cloth spreading plate, impregnating the outer layer of glass fiber cloth with resin through a high-pressure glue injection box, and heating and curing the outer layer of glass fiber cloth layer through an outer layer mold.
8. The utility model provides a preparation facilities of fatigue-resistant combined material sucker rod in succession, includes from preceding carbon fiber glue groove, carbon fiber mould, preforming yarn dividing plate, exhibition cloth board, high-pressure glue injection box, automatic compounding injecting glue machine, the outer solidification mould that sets gradually after to, its characterized in that, carbon fiber glue groove, carbon fiber mould, preforming yarn dividing plate, exhibition cloth board, high-pressure glue injection box, automatic compounding injecting glue machine, outer solidification mould, the centre bore of above-mentioned part is on a straight line, exhibition cloth board upper portion is the arc structure, and the round hole is seted up to the lower part.
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| CN112976698A (en) * | 2019-12-02 | 2021-06-18 | 中国石油化工股份有限公司 | Fatigue-resistant composite material continuous sucker rod and preparation device and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112976698A (en) * | 2019-12-02 | 2021-06-18 | 中国石油化工股份有限公司 | Fatigue-resistant composite material continuous sucker rod and preparation device and preparation method thereof |
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