CN108678684B - Impact-resistant composite sucker rod - Google Patents

Impact-resistant composite sucker rod Download PDF

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Publication number
CN108678684B
CN108678684B CN201810700206.3A CN201810700206A CN108678684B CN 108678684 B CN108678684 B CN 108678684B CN 201810700206 A CN201810700206 A CN 201810700206A CN 108678684 B CN108678684 B CN 108678684B
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resistant
fiber
impact
resin
layer
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CN108678684A (en
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朱波
曹伟伟
乔琨
王永伟
赵新刚
张贵贤
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Petrochina Jilin Petrochemical Co ltd
Shandong University
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Petrochina Jilin Petrochemical Co ltd
Shandong University
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention provides an impact-resistant composite sucker rod. The sucker rod adopts a flat belt rod-shaped structure; the impact-resistant composite sucker rod is composed of a central high-rigidity composite core layer, a middle impact-resistant hybrid fiber composite layer and a surface heat-resistant layer from inside to outside in sequence. The high-rigidity composite material core layer is composed of a plurality of carbon fiber hybrid reinforced thermosetting resins, the middle impact-resistant hybrid fiber composite material layer is composed of high-toughness fiber hybrid reinforced thermoplastic resins, and the surface heat-resistant layer is composed of a high-performance thermosetting resin matrix in a hybrid high-temperature-resistant inorganic fiber mode. The sucker rod body structure is formed by mixing various high-strength high-modulus fibers, various special resins are used as a matrix, the comprehensive advantages of various composite materials are utilized, the tolerance to the impact environment of underground work is improved, and the service life of the sucker rod is effectively prolonged.

Description

Impact-resistant composite sucker rod
Technical Field
The invention belongs to the technical field of oil extraction engineering, and particularly relates to an impact-resistant composite material sucker rod.
Background
With the continuous development of oil exploitation technology and the improvement of oil exploitation quantity, the depth of an oil well and the complexity of an underground environment are improved, so that the oil exploitation technology is suitable for various technical problems in the oil exploitation industry, and various researches on sucker rod structures coping with the complicated underground environment and the development of novel multifunctional sucker rods are more and more. The sucker rod is characterized in that in the sucker rod reciprocating motion process, the sucker rod inevitably encounters impact and impact of various broken stones or stones in underground geology, surface damage of a rod body inevitably occurs, and particularly, most of sucker rods made of composite materials are used in the sucker rod process, if the sucker rod is impacted in the working process, damage of an integral structure and even rod breakage occur, and the damage and failure of an oil well are seriously caused.
In order to reduce the occurrence of the problem as much as possible, the prior art reports that a sucker rod prepared by adopting a composite material, such as CN 101396874A discloses an anti-eccentric wear sucker rod, which is prepared by combining a pultrusion process and a winding process, preparing a composite sucker rod body by using a pultrusion curing process after impregnating a resin matrix with fibers, continuously winding wear-resistant fibers impregnated with a resin matrix glue solution on the surface of the molded rod body, and curing the wear-resistant fibers to prepare the sucker rod body with a spiral rib-shaped anti-eccentric wear layer on the surface; however, the sucker rod method is complex in preparation process, more in control parameters in the preparation process, and poor in impact resistance effect although having good eccentric wear prevention characteristic, and the phenomenon of damage and even breakage of the whole structure of the sucker rod is easy to occur in a complex and changeable underground environment. It is therefore desirable to provide a sucker rod that is highly resistant to the impact environment of downhole operations, thereby effectively increasing the useful life of the sucker rod.
Disclosure of Invention
In order to overcome the defects in the prior art, the inventor provides an impact-resistant composite sucker rod through long-term technical and practical exploration. The sucker rod is composed of an inner high-rigidity composite material core layer, a middle impact-resistant hybrid fiber composite material layer and a surface heat-resistant layer from inside to outside in sequence. The comprehensive characteristics of various fibers are effectively exerted by reasonably adopting various fiber hybrid combinations, wherein the hybrid carbon fibers of the core provide high strength and high rigidity for the whole rod body; the middle layer is used as a core with impact resistance and is formed by mixing various high-toughness fibers; the inorganic fiber on the surface provides the integral high-temperature resistant characteristic guarantee. The composite structure of the thermosetting and thermoplastic fibers is adopted, so that the integral rigidity is ensured, the impact resistance performance is improved, meanwhile, the integral temperature resistance performance is effectively improved due to the use of the surface heat-resistant phenolic resin, and the sucker rod body made of the multi-layer composite material is suitable for underground complex environments, and meanwhile, the service life of underground work of the rod body is prolonged.
One of the purposes of the present invention is to provide an impact resistant composite sucker rod.
It is a second object of the present invention to provide the use of the sucker rod described above.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect of the invention, there is provided an impact-resistant composite sucker rod, the sucker rod having a ribbon-and-rod-like structure; the impact-resistant composite sucker rod is composed of a central high-rigidity composite core layer, a middle impact-resistant hybrid fiber composite layer and a surface heat-resistant layer from inside to outside in sequence;
the central high-rigidity composite material core layer is composed of carbon fiber hybrid reinforced thermosetting resin; the content of the resin matrix is controlled within the range of 30-50%, wherein the thickness of the high-rigidity composite material core is controlled between 1-5mm according to the use requirement;
further, the carbon fiber is formed by mixing high-strength carbon fiber and/or high-modulus carbon fiber, wherein the high-strength carbon fiber is selected from any one or more of T300, T700, T800 and T1000, the high-modulus carbon fiber is selected from any one or more of M40, M40J, M55, M60 and M60J, and the mixing proportion of the high-strength and high-modulus carbon fiber is flexibly adjusted according to the use requirement;
the thermosetting resin comprises any one of epoxy resin, unsaturated polyester resin, organic silicon resin and thermosetting polyurethane resin, or a thermoplastic modified body of the thermosetting resin is selected;
the middle impact-resistant hybrid fiber composite layer is composed of high-toughness fiber hybrid reinforced thermoplastic resin; the content of the resin matrix is controlled within the range of 30-40%, wherein the thickness of the middle impact-resistant hybrid fiber composite material layer is controlled within the range of 2-4 mm;
further, the high-toughness fiber is any one or a combination of more than one of aramid fiber, high-strength glass fiber, UHMWPE fiber and PBO fiber;
the thermoplastic resin includes, but is not limited to, any one of thermoplastic polyurethane resin, polyphenylene sulfide resin, polyethylene, polypropylene, polystyrene, polycarbonate;
the surface heat-resistant layer is formed by reinforcing hybrid high-temperature-resistant inorganic fibers by adopting a high-performance thermosetting resin matrix; the content of the resin matrix is controlled within the range of 40-60%, wherein the thickness of the surface heat-resistant layer is controlled within the range of 1-3 mm;
further, the hybrid high-temperature-resistant inorganic fiber is selected from any one or a combination of a plurality of silicon carbide fibers, boron nitride fibers, aluminum oxide fibers, quartz fibers, boron carbide fibers and basalt fibers, and the types and the proportions of the hybrid fibers are flexibly adjusted according to the requirements of the heat-resistant environment;
the high-performance thermosetting resin is selected from phenolic resin or modified phenolic resin, wherein the modified phenolic resin comprises polyurethane modified phenolic resin and styrene-butadiene rubber modified phenolic resin; thereby improving the heat resistance and toughness thereof.
In a second aspect, the invention provides the application of the impact-resistant composite sucker rod in oil extraction in petroleum industry.
The invention has the beneficial effects that:
the invention adopts a composite material flat belt structure sucker rod body formed by combining various composite material structures, wherein various fibers are mixed and combined, the comprehensive characteristics of various fibers are effectively exerted, and the mixed carbon fibers of the core part provide high strength and high rigidity for the whole body of the sucker rod body; the middle layer is used as a core with impact resistance and is formed by mixing various high-toughness fibers; the inorganic fiber on the surface provides the integral high-temperature resistant characteristic guarantee. The composite structure of the thermosetting and thermoplastic fibers is adopted, so that the integral rigidity is ensured, the impact resistance performance is improved, meanwhile, the integral temperature resistance performance is effectively improved due to the use of the surface heat-resistant phenolic resin, and the sucker rod body made of the multi-layer composite material is suitable for underground complex environments, and meanwhile, the service life of underground work of the rod body is prolonged.
Drawings
FIG. 1 is a schematic view of a composite ribbon sucker rod having impact resistance according to the present invention, the sucker rod comprising: the composite material comprises a central high-rigidity composite material core layer 1, a middle impact-resistant hybrid fiber composite material layer 2 and a surface heat-resistant layer 3.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As mentioned above, the sucker rod made of the composite material is impacted in the working process, so that the damage of the whole structure and even the rod breakage phenomenon can easily occur, and the scrapping failure of the oil well can be seriously caused.
In view of the above, in one embodiment of the present invention, an impact-resistant composite sucker rod is provided, wherein the sucker rod adopts a flat belt rod-shaped structure; the impact-resistant composite sucker rod is composed of a central high-rigidity composite core layer, a middle impact-resistant hybrid fiber composite layer and a surface heat-resistant layer from inside to outside in sequence;
in yet another embodiment of the present invention, the central high stiffness composite core layer is comprised of carbon fiber hybrid reinforced thermosetting resin; the content of the resin matrix is controlled within the range of 30-50%, wherein the thickness of the high-rigidity composite material core is controlled between 1-5mm according to the use requirement;
in another specific embodiment of the invention, the carbon fiber is formed by mixing high-strength carbon fiber and/or high-modulus carbon fiber, wherein the high-strength carbon fiber is selected from any one or more of T300, T700, T800 and T1000, the high-modulus carbon fiber is selected from any one or more of M40, M40J, M, M60 and M60J, and the mixing proportion of the high-strength and high-modulus carbon fiber is flexibly adjusted according to the use requirement;
in yet another embodiment of the present invention, the thermosetting resin comprises any one of epoxy resin, unsaturated polyester resin, silicone resin, thermosetting polyurethane resin, or thermoplastic modified body of the foregoing thermosetting resin;
in yet another embodiment of the present invention, the intermediate impact resistant hybrid fiber composite layer is comprised of a high tenacity fiber hybrid reinforced thermoplastic resin; the content of the resin matrix is controlled within the range of 30-40%; regarding the thickness of the middle impact-resistant hybrid fiber composite layer, a larger thickness is often better for impact, but too large a thickness of the impact-resistant hybrid fiber composite layer can cause the rigidity of the whole sucker rod to be poor; the thickness of the intermediate impact-resistant hybrid fiber composite layer is thus controlled within the range of 2-4mm in order to balance impact resistance and rigidity;
in yet another embodiment of the present invention, the high tenacity fibers are any one or a combination of more of aramid fibers, high strength glass fibers, UHMWPE fibers, PBO fibers;
in yet another embodiment of the present invention, the thermoplastic resin includes, but is not limited to, any one of thermoplastic polyurethane resin, polyphenylene sulfide resin, polyethylene, polypropylene, polystyrene, polycarbonate;
in another specific embodiment of the invention, the surface heat-resistant layer is formed by adopting high-performance thermosetting resin matrix reinforced hybrid high-temperature-resistant inorganic fibers; the content of the resin matrix is controlled within the range of 40-60%, wherein the thickness of the surface heat-resistant layer is controlled within the range of 1-3 mm;
in a further specific embodiment of the invention, the hybrid high-temperature-resistant inorganic fiber is selected from any one or more of silicon carbide fiber, boron nitride fiber, aluminum oxide fiber, quartz fiber, boron carbide fiber and basalt fiber, and the type and proportion of the hybrid fiber are flexibly adjusted according to the requirements of the heat-resistant environment;
in yet another embodiment of the present invention, the high performance thermosetting resin is selected from phenolic resin or modified phenolic resin, including but not limited to polyurethane modified phenolic resin, styrene butadiene rubber modified phenolic resin; thereby improving the heat resistance and toughness thereof.
In yet another embodiment of the present invention, there is provided the use of the impact resistant composite sucker rod described above in oil recovery in the petroleum industry.
The invention will be further illustrated with reference to specific examples, which are given for the purpose of illustration only and are not to be construed as limiting the invention. If experimental details are not specified in the examples, it is usually the case that the conditions are conventional or recommended by the sales company; the present invention is not particularly limited and can be commercially available.
Example 1
A composite material flat-strip sucker rod with impact resistance comprises three parts of structures: firstly, a reinforced fiber structure with high-strength T300 carbon fiber mixed with high modulus M60 carbon fiber as a core is adopted, wherein the mixing ratio of the T300 carbon fiber to the M60 carbon fiber is 1:1, the whole reinforced structure adopts unidirectional arrangement, and epoxy resin with 30% content is adopted as a matrix to compound and form a high-rigidity core layer with the thickness of 3 mm.
And then, the middle impact-resistant composite material layer takes Kvlar aramid fiber mixed PBO fiber of K29 as a reinforcing structure, wherein the mixing ratio of the K29 aramid fiber to the PBO fiber is 2:1, the whole reinforcing mixed fabric adopts a unidirectional arrangement structure, and the middle impact-resistant layer with the thickness of 2mm is prepared on the surface of the high-rigidity core layer by taking polyphenylene sulfide resin with the content of 40% as a matrix for composite molding.
Finally, the surface heat-resistant layer is formed by a unidirectional fiber reinforced structure of silicon carbide fibers and aluminum oxide fibers in a mixing ratio of 1:1, and the surface heat-resistant layer with the thickness of 1mm is prepared by taking polyurethane elastomer modified phenolic resin with the content of 40% as a matrix.
Example 2
A composite material flat-strip sucker rod with impact resistance comprises three parts of structures: firstly, a reinforced fiber structure with high-strength T700 carbon fiber mixed with high-modulus M40 carbon fiber as a core is adopted, wherein the mixing ratio of the T700 carbon fiber to the M40 carbon fiber is 3:1, the whole reinforced structure adopts unidirectional arrangement, and epoxy resin with the content of 45% is adopted as a matrix to compound and form a high-rigidity core layer with the thickness of 4 mm.
And then, the middle impact-resistant composite material layer takes K129 Kevlar aramid fiber and UHMWPE fiber as a reinforcing structure, wherein the mixing ratio of the K129 aramid fiber and the UHMWPE fiber is 3:2, the whole reinforcing hybrid fabric adopts a plain weave fabric arrangement structure, polyurethane resin with the content of 35% is used as a matrix for composite molding, and the middle impact-resistant layer with the thickness of 2.5mm is prepared on the surface of the high-rigidity core layer.
Finally, the surface heat-resistant layer is formed by a unidirectional fiber reinforced structure of silicon carbide fibers and glass fibers in a mixing ratio of 2:1, and the surface heat-resistant layer with the thickness of 1.5mm is prepared by taking polyurethane elastomer modified phenolic resin with the content of 44% as a matrix.
Example 3
A composite material flat-strip sucker rod with impact resistance comprises three parts of structures: firstly, a reinforcing fiber structure with high-strength T800 carbon fiber mixed with high modulus M55 carbon fiber as a core is adopted, wherein the mixing ratio of the T800 carbon fiber to the M55 carbon fiber is 1:5, the whole reinforcing structure adopts unidirectional arrangement, and the epoxy resin with the content of 33% is used as a matrix to compound and form a high-rigidity core layer with the thickness of 3.5 mm.
And then, the middle impact-resistant composite material layer takes K129 aramid fiber mixed with K49 Kevlar aramid fiber as a reinforcing structure, wherein the mixing ratio of the K49 aramid fiber and the K129 aramid fiber is 2:3, the whole reinforcing mixed fabric adopts a unidirectional arrangement structure, and the middle impact-resistant layer with the thickness of 3mm is prepared on the surface of the high-rigidity core layer by taking polyphenylene sulfide resin with the content of 38% as a matrix for composite molding.
Finally, the surface heat-resistant layer is formed by a unidirectional fiber reinforced structure of alumina fibers and boron carbide fibers in a mixing ratio of 4:1, and the surface heat-resistant layer with the thickness of 1.4mm is prepared by taking 55% styrene-butadiene rubber modified phenolic resin as a matrix.
Example 4
A composite material flat-strip sucker rod with impact resistance comprises three parts of structures: the method comprises the steps of firstly adopting a reinforced fiber structure with high-strength T700 carbon fiber mixed with high-modulus M60J carbon fiber as a core, wherein the mixing ratio of the T700 carbon fiber to the M60J carbon fiber is 1:3, adopting unidirectional arrangement for the whole reinforced structure, and taking 34% epoxy resin as a matrix to compound and form a high-rigidity core layer with the thickness of 3.6 mm.
And then, the middle impact-resistant composite material layer takes Kvlar aramid fiber mixed PBO fiber of K49 as a reinforcing structure, wherein the mixing ratio of the K49 aramid fiber to the PBO fiber is 5:1, the whole reinforcing mixed fabric adopts a plane twill fabric arrangement structure, and the middle impact-resistant layer with the thickness of 2.5mm is prepared on the surface of the high-rigidity core layer by taking 36% of polycarbonate resin as a matrix for composite molding.
Finally, the surface heat-resistant layer is formed by a unidirectional fiber reinforced structure of boron nitride fibers and basalt fibers in a mixing ratio of 4:1, and the surface heat-resistant layer with the thickness of 1.5mm is prepared by taking 58% polyurethane elastomer modified phenolic resin as a matrix.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (2)

1. The impact-resistant composite sucker rod is characterized in that the sucker rod adopts a flat-belt rod-shaped structure; the impact-resistant composite sucker rod is composed of a central high-rigidity composite core layer, a middle impact-resistant hybrid fiber composite layer and a surface heat-resistant layer from inside to outside in sequence;
the central high-rigidity composite material core layer is composed of carbon fiber hybrid reinforced thermosetting resin;
the middle impact-resistant hybrid fiber composite layer is composed of high-toughness fiber hybrid reinforced thermoplastic resin;
the surface heat-resistant layer is formed by reinforcing hybrid high-temperature-resistant inorganic fibers by adopting a high-performance thermosetting resin matrix; the content of the resin matrix is controlled within the range of 40-60%, wherein the thickness of the surface heat-resistant layer is controlled within the range of 1-3 mm;
the hybrid high-temperature-resistant inorganic fiber is selected from any one or a combination of a plurality of silicon carbide fibers, boron nitride fibers, aluminum oxide fibers, quartz fibers, boron carbide fibers and basalt fibers;
the high-performance thermosetting resin is selected from phenolic resin or modified phenolic resin, wherein the modified phenolic resin comprises polyurethane modified phenolic resin and styrene-butadiene rubber modified phenolic resin;
the content of the resin matrix adopted by the central high-rigidity composite material core layer is controlled within the range of 30-50%, wherein the thickness of the high-rigidity composite material core is controlled between 1-5mm according to the use requirement;
the carbon fiber adopted by the central high-rigidity composite material core layer is formed by mixing high-strength carbon fiber and/or high-modulus carbon fiber, wherein the high-strength carbon fiber is selected from any one or more of T300, T700, T800 and T1000, and the high-modulus carbon fiber is selected from any one or more of M40, M40J, M, M60 and M60J;
the thermosetting resin adopted by the central high-rigidity composite material core layer comprises any one of epoxy resin, unsaturated polyester resin, organic silicon resin and thermosetting polyurethane resin, or a thermoplastic modified body of the thermosetting resin is selected;
the resin matrix content adopted by the middle impact-resistant hybrid fiber composite material layer is controlled within the range of 30-40%, wherein the thickness of the middle impact-resistant hybrid fiber composite material layer is controlled within the range of 2-4 mm;
the high-toughness fiber adopted by the middle impact-resistant hybrid fiber composite material layer is any one or a combination of more of aramid fiber, high-strength glass fiber, UHMWPE fiber and PBO fiber;
the thermoplastic resin used for the intermediate impact-resistant hybrid fiber composite layer includes, but is not limited to, any one of thermoplastic polyurethane resin, polyphenylene sulfide resin, polyethylene, polypropylene, polystyrene, and polycarbonate.
2. The use of the impact-resistant composite sucker rod of claim 1 in oil recovery in the petroleum industry.
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CN207268162U (en) * 2017-10-24 2018-04-24 山东大学 A kind of pulley structure composite material oil pumping rod centering device
CN108081692A (en) * 2018-01-22 2018-05-29 山东大学 3 D weaving plate of resistance to ablative composite material and preparation method thereof

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