CN204022720U - A kind of high-temperature resistant inner lining oil pick-up tube - Google Patents
A kind of high-temperature resistant inner lining oil pick-up tube Download PDFInfo
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- CN204022720U CN204022720U CN201420426833.XU CN201420426833U CN204022720U CN 204022720 U CN204022720 U CN 204022720U CN 201420426833 U CN201420426833 U CN 201420426833U CN 204022720 U CN204022720 U CN 204022720U
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Abstract
The utility model discloses a kind of high-temperature resistant inner lining oil pick-up tube, described high-temperature resistant inner lining oil pick-up tube comprises described base tube (2) and high-temperature resistant inner lining tubing (3), and described high-temperature resistant inner lining tubing (3) is arranged on the inner side of described base tube (2).Described high-temperature resistant inner lining oil pick-up tube liner tubing has advantage that is high temperature resistant, wear-resisting, anticorrosion, Wax proofing, can use for a long time in the well on the beam under the temperature condition more than 150 DEG C.
Description
Technical field
The utility model relates to oil field technical field of petroleum machinery, particularly one high temperature resistant graft crosslinking polymeric amide internal lining pipe, for steel oil pick-up tube compound, realize the functions such as eccentric abrasion prevention, anticorrosion, Wax proofing in high-temperature oil well oil recovery field.
Background technology
Liner oil pipe adopts technical skill liner one deck special plastic wear-resistant tubing in steel plain tubing, and bushing pipe and oil pipe are close together, and forms " tube-in-tube " structure.Compared with metal pipe material, liner oil pipe has the advantages such as quality is light, corrosion-resistant, wear-resistant, non-corrosive, thermal conductivity are low, frictional coefficient is low, good insulation preformance, self-cleaning are strong, fluid resistance is little.This technology does not need to change existing oil production technology and operation technique, does not need special power tool, reliably simple and easy.The internal lining pipe material that current oil field at home uses is mainly HDPE/EXPE and UHMWPE bis-kinds: HDPE bushing pipe and adapts to oil temperature 75 ~ 80 DEG C, and EXPE bushing pipe is on HDPE basis, and add the additive improving heat resistance and make, its heat resistance increases; UHMWPE bushing pipe adapts to oil temperature 110 DEG C, meets general oil well needs, and the over-all properties such as wear-resisting is better than HDPE/EXPE bushing pipe, and toughness is better, and intensity is higher, and it both can use new oil pipe, also can use the old oil pipe after reparation.
All polyethylene bushing pipes, epoxy resin bushing pipe in the market, its heat resisting temperature is all significantly less than 150 DEG C, and under 150 DEG C of conditions, use properties rapid ageing reduces, and product produces fragment plugging oil pump later; Epoxy resin as high-abrasive material, its wear resistance and heat resistance poorer relative to ultrahigh molecular weight polyethylene(UHMWPE) because it is thermoset brittle resin, in use easily to strip down from oil pipe, cause oil well pump to block.
CN201110436316.1 discloses ultrahigh molecular weight polyethylene abrasion-proof tube extrusion molding technique and adopts 87%-91% molecular weight to be that ultrahigh molecular weight polyethylene tubing prepared by the raw materials such as the ultrahigh molecular weight polyethylene(UHMWPE) powder of 250-300 ten thousand.CN201310021909.0 ultrahigh molecular weight polyethylene(UHMWPE)/carbon nanotube oil pipe lining tubing and preparation method thereof, disclose a kind of modified ultra-high molecular weight polyethylene tubing and preparation method, its Vicat softening point is less than 135 DEG C, life-time service temperature is less than 100 DEG C, can be used for the oil well that the degree of depth is less than 2000m.CN201210513970.2 discloses a kind of recover the oil anticorrosion, Wax proofing, refractory polyethylene tubing and preparation method thereof, poly resistance toheat is suitably improved by adding bismaleimides, its Vicat softening point reaches 135 DEG C, use temperature reaches 130 DEG C, can be used for the oil well that the degree of depth is less than 2000m.CN201120120414.X and CN1401933A discloses self-lubricating corrosion-resistant and wear-and corrosion-resistant coating composite oil pumping pipe and coating method thereof, and material of main part is epoxy resin, and the wear resisting property of this material is poor.
All heat-drawn wire is the highest is only 130 DEG C for production liner tubing disclosed in above-mentioned patent application, and life-time service temperature is at 80 DEG C ~ about 100 DEG C.But along with the increase of oil well depth, the temperature of underground increases gradually, and when being more than 2000m to 3000m to the degree of depth, temperature can reach 150 DEG C, existing production liner tubing can not under the environment of 150 DEG C life-time service, can not meet the service requirements of deep well pipe.
Utility model content
In order to solve the problem that modified plastics oil pick-up tube liner tubing in prior art can only work under lower than the condition below 130 DEG C of temperature, the utility model provides a kind of high-temperature resistant inner lining oil pick-up tube liner tubing, it has advantage that is high temperature resistant, wear-resisting, anticorrosion, Wax proofing, can use for a long time in the well on the beam under the temperature condition more than 150 DEG C.
The utility model additionally provides the preparation method of high-temperature resistant inner lining oil pick-up tube liner tubing.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
A kind of high-temperature resistant inner lining oil pick-up tube liner tubing, described high-temperature resistant inner lining oil pick-up tube liner tubing is prepared from by the component of following weight parts:
Polyhexamethylene adipamide: 20-25 weight part;
Terpolymer EP rubber: 1-10 weight part;
Grafted polyolefin olefin elastomer: 1-10 weight part;
N, N ' between penylene bismaleimides: 5-15 weight part;
Oxidation inhibitor: 1-5 weight part;
Anti-aging agent: 1-5 weight part;
Linking agent: 0.1-0.8 weight part;
Grafting catalysts: 0.015-0.05 weight part.
The number-average molecular weight of described polyhexamethylene adipamide is 30,000-5 ten thousand.
Between described terpolymer EP rubber mooney viscosity 75 to 100.
Described grafted polyolefin olefin elastomer number-average molecular weight is 50,000-10 ten thousand.
Described grafted polyolefin olefin elastomer is maleic anhydride graft high density polyethylene(HDPE) (EPDM-g-MAH).
Described bismaleimides is N, N '-4,4 '-diphenyl methane dimaleimide.
Described oxidation inhibitor is antioxidant 1010 (four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, antioxidant 300 (4,4 '-thiobis (the 6-tertiary butyl-3-methylphenol)), one in antioxidant BHT (2,6 ditertiary butyl p cresol).
Described anti-aging agent is the one in anti-aging agent RD, antioxidant D, antioxidant 4010.
Linking agent is DCP (dicumyl peroxide), BPO (benzoyl peroxide) or isopropyl benzene hydroperoxide.
Described grafting catalysts is three oxidation two rubidiums.
Prepare a preparation method for described high-temperature resistant inner lining oil pick-up tube liner tubing, it is characterized in that, comprise the steps:
Step 1: mixing is dried
Polyhexamethylene adipamide, terpolymer EP rubber, grafted polyolefin olefin elastomer, bismaleimides, oxidation inhibitor, anti-aging agent, linking agent, grafting catalysts are mixed in high-speed mixer, dries 10 hours under keeping 100 DEG C of temperature condition in an oven.Step 2: extrusion moulding granulation
Step 2: extrusion moulding PP Pipe Compound granulation
Polyhexamethylene adipamide, terpolymer EP rubber, grafted polyolefin olefin elastomer, bismaleimides, oxidation inhibitor, anti-aging agent, linking agent, grafting catalysts are extruded by twin screw extruder or three-screw extruder the product that footpath is 5mm, cool in the sink, the dicing machine granulation of being installed by tank end becomes diameter 5mm, the particle of length 5 ~ 10mm;
Step 3: tube forming
Particle step 2 prepared is dried 10 hours under 100 DEG C of temperature condition, and the amount specified according to proportioning adds moisture trapping agent, mixes, and adopts single screw extrusion machine extrusion moulding high-temperature resistant inner lining oil pick-up tube liner tubing.Described moisture trapping agent is 1 ‰-5 ‰ of above-mentioned particle gross weight.
The temperature of described twin screw extruder or each heating zone of three-screw extruder machine barrel is: a district: 170 ~ 185 DEG C, 2nd district: 240 ~ 290 DEG C, 3rd district: 260 ~ 300 DEG C, 4th district: 240 ~ 290 DEG C, 5th district: 240 ~ 290 DEG C, 6th district: 230 ~ 280 DEG C, head temperature: 170 ~ 185 DEG C, engine speed 30 ~ 60 turns/min, head pressure: 15 ~ 20MPa.
The temperature of each heating zone of described extruder cylinder of single screw extruder is: a district: 220 ± 20 DEG C, 2nd district: 240 ± 20 DEG C, 3rd district: 248 ± 20 DEG C, 4th district: 255 ± 20 DEG C, 5th district: 255 ± 20 DEG C, 6th district: 255 ± 20 DEG C, head temperature: 170 ~ 185 DEG C, engine speed 30 ~ 60 turns/min, head pressure: 15 ~ 20MPa.
A kind of high-temperature resistant inner lining oil pick-up tube, described high-temperature resistant inner lining oil pick-up tube is that described base tube 2 and described high-temperature resistant inner lining tubing 3 compound are prepared from.
Described internal lining pipe 3 two ends are equipped with towards the flange 4 of described base tube 2, and the end of described base tube 2 is positioned at 4 forming regions of flange described in two, and the two ends bottom of thread of base tube 2 keeps concordant with the outer side that flange described in two 4 is formed respectively.
Described high-temperature resistant inner lining oil pick-up tube also comprises the box cupling 1 for being connected in series oil pick-up tube described in two, described box cupling 1 is provided with internal thread, base tube 2 both ends in described oil pick-up tube are provided with outside screw, being matched by screw thread in the end of described box cupling 1 and base tube 2, by box cupling, many oil pick-up tube is connected to oil well depth.
It is 4-10cm that described box cupling (1) and described oil pick-up tube 11 are socketed length.
The beneficial effect that the technical scheme that the utility model provides is brought is:
(1) high-temperature resistant inner lining oil pick-up tube liner tubing of the present utility model is by selecting three oxidation two rubidiums to be grafting catalysts, graft N on polyhexamethylene adipamide molecule, penylene bismaleimides between N ', by two benzene ring structures of bismaleimides, improve the resistance toheat of polyhexamethylene adipamide, by high viscosity terpolymer EP rubber and the elastomeric use of maleic anhydride stem grafting polyolefin, improve the viscosity under the molten state of material, improve the one-tenth pipe characteristic of material, amido reaction simultaneously on maleic anhydride and polyhexamethylene adipamide molecule generates amide group, improve the acid resistance of material, by the use of oxidation inhibitor and anti-aging agent, improve the stability under material at high temperature condition, reduce the degraded possibility of shaping process in which materials, by the use of linking agent, make the active group contained in material produce crosslinking reaction, thus improve the heat resistance of tubing further.
(2) its material of liner tubing that high-temperature resistant inner lining oil pick-up tube of the present utility model is used has advantage that is high temperature resistant, anticorrosion, wear-resisting, Wax proofing, can use for a long time in the well on the beam under 150 DEG C of geotemperature conditions.Experiment shows that high-temperature resistant inner lining oil pick-up tube liner tubing prepared by the application can use for 2 years under 150 DEG C of geotemperature conditions.Tubing Vicat softening point prepared by the utility model is greater than 200 DEG C, and life-time service temperature, more than 150 DEG C, may be used for the eccentric abrasion prevention of 3000m and above dark oil well oil-pumping tubing, has the advantages such as resistance to elevated temperatures is good, wear-resisting, anticorrosion, Wax proofing, acid resistance are good.
(3) the utility model employs moisture trapping agent for the preparation of during high-temperature resistant inner lining oil pick-up tube liner tubing, in material, the moisture of trace forms water vapour when high-temperature molding, easily in tubing, form bubble, moisture trapping agent and water react and form hydrate, can not decompose at one-tenth pipe temperature, the pipe workpiece quality formed is good, and pore-free, can increase substantially liner tubing qualification rate.
(4) internal lining pipe two ends of the present utility model are equipped with towards the flange of described base tube, make described internal lining pipe and described base tube compound tightr.
Accompanying drawing explanation
Fig. 1 is high-temperature resistant inner lining tubular construction schematic diagram;
Fig. 2 is high-temperature resistant inner lining tubular construction enlarged view;
Fig. 3 is die geometry schematic diagram in extruding pipe material;
Fig. 4 is the outer die geometry schematic diagram of extruding pipe material;
Fig. 5 is collar extension die combination structural representation in extruding pipe material;
Wherein: 1-box cupling; 2-base tube; 3-is high temperature resistant bushing pipe; 4-flange; 5-internal orifice mould; 6-internal orifice mould screw thread; 7-internal orifice mould through hole; 8-collar extension mould; 9-collar extension mould screw thread; 10-outer mold through hole; Screw thread in 12-steel oil pick-up tube.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
The manufacturer of the twin screw extruder in the embodiment of the application is Sichuan Zhongzhuang Technology Co., Ltd., and model is T6-65.
The manufacturer of single screw extrusion machine is Shandong Tong Jia Machinery Co., Ltd., and model is TJ-90.
Polyhexamethylene adipamide: (Zytel42 of du pont company, Bayer A.G A30S)
Terpolymer EP rubber: (Korea S brocade lake KEP1030F, Dow Chemical 4785, Jilin J-3080)
Maleic anhydride stem grafting polyolefin elastomerics: (du pont company POE8999, Exxon Mobil POE5371)
Embodiment 1
A kind of high-temperature resistant inner lining oil pick-up tube liner tubing, described liner tubing is prepared from grains dedicated material by the component of following kg, by particulate material extrusion moulding tubing:
Number-average molecular weight is the polyhexamethylene adipamide of 30,000-5 ten thousand: 25kg;
Terpolymer EP rubber: 1kg;
Molecular weight is the grafted polyolefin olefin elastomer of 50,000-10 ten thousand: 5kg;
N, N '-4,4 '-diphenyl methane dimaleimide: 10kg;
Antioxidant 1010: 4kg;
Anti-aging agent RD: 3kg;
Crosslink agent DCP: 0.1kg;
Grafting catalysts three is oxidized two rubidiums: 0.05kg.
A kind of preparation method preparing described high-temperature resistant inner lining oil pick-up tube liner tubing, comprise the steps: polyhexamethylene adipamide, terpolymer EP rubber, grafted polyolefin olefin elastomer, bismaleimides, oxidation inhibitor, anti-aging agent, linking agent, grafting catalysts adopt high-speed mixer mix and under 100 DEG C of conditions dry 10 hours for subsequent use, material is sucked with suction system in the barrel of twin screw extruder, the parameter of adjustment twin screw extruder a: district: 170 DEG C, 2nd district: 240 DEG C, 3rd district: 260 DEG C, 4th district: 290 DEG C, 5th district: 280 DEG C, 6th district: 250 DEG C, head temperature: 185 DEG C, engine speed 45 turns/min, head pressure: 20MPa.Adopt twin screw extruder to extrude the product that diameter is 5mm, cool in the sink, adopt the granulator granulation of tank end, forming length is the particle of 5 ~ 10mm.
Grains dedicated material after granulation is dried 10 hours under 100 DEG C of temperature condition, add the moisture trapping agent of Nanjing DSM company, every 1000kg particulate material consumption is 1kg, mix with the special material for tube of drying, adopt single screw extrusion machine extrusion moulding high-temperature resistant inner lining oil pick-up tube liner tubing, the temperature of each heating zone of extruder barrel is: a district: 220 DEG C, 2nd district: 240 DEG C, 3rd district: 248 DEG C, 4th district: 255 DEG C, 5th district: 255 DEG C, 6th district: 255 DEG C, head temperature: 170 ~ 185 DEG C, engine speed 45 turns/min, head pressure: 15 ~ 20MPa.
The molten materials being heated to specified temperature in machine barrel, extrude pipe with the pressure specified and speed between mouth mould and plug; Described die head mouth mould and plug adopt the short structure of cone, and as shown in Figure 2, Figure 3, Figure 4, the tapering of internal orifice mould 5 and collar extension mould 8 is 60 °, and length is 10 ~ 13 times (the present embodiment selects 30mm) of products thickness; Described internal orifice mould 5 is provided with internal orifice mould screw thread 6 and internal orifice mould through hole 7, and described collar extension mould 8 is provided with the collar extension mould screw thread 9 matched with described internal orifice mould screw thread 6, the outer mold through hole 10 adapted with described internal orifice mould through hole 7.Material is flowed out by the gap between interior collar extension mould, and forming viscous state thickness is 3mm pipe, and pipe is through vacuum sizing room under the traction of tractor, and sizing limit, limit cold water cools, and vacuum degree control is at-0.7MPa.
The test result of high-temperature resistant inner lining oil pick-up tube prepared by the present embodiment is in table 1.
The performance index that table 1 high-temperature resistant inner lining oil pick-up tube liner tubing reaches
Embodiment 2
A kind of high-temperature resistant inner lining oil pick-up tube liner tubing, described liner tubing is prepared from grains dedicated material by the component of following kg, by particulate material extrusion moulding tubing:
Number-average molecular weight is the polyhexamethylene adipamide of 30,000-5 ten thousand: 20kg;
Terpolymer EP rubber: 5kg;
Number-average molecular weight is the grafted polyolefin olefin elastomer of 50,000-10 ten thousand: 10kg;
N, N '-4,4 '-diphenyl methane dimaleimide: 15kg;
Antioxidant 300: 1kg;
Antioxidant D: 5kg;
Linking agent PBO:0.8kg;
Grafting catalysts three is oxidized two rubidiums: 0.015kg;
A kind of preparation method preparing described high-temperature resistant inner lining oil pick-up tube liner tubing, its step is with embodiment 1, the wherein parameter of twin screw extruder a: district: 185 DEG C, 2nd district: 290 DEG C, 3rd district: 280 DEG C, 4th district: 240 DEG C, 5th district: 290 DEG C, 6th district: 280 DEG C, head temperature: 170 DEG C, engine speed 45 turns/min, head pressure: 15MPa.Adopt twin screw extruder to extrude the product that diameter is 5mm, it is the particle of 5 ~ 10mm that cooling granulation forms length.Dry moisture content in particulate material according to the mode of embodiment 1, add the moisture trapping agent of Nanjing DSM company, every 1000kg particulate material consumption is 2kg, mix with the special material for tube of drying, setting single screw extrusion machine parameter a: district: 200 DEG C, 2nd district: 220 DEG C, 3rd district: 258 DEG C, 4th district: 255 DEG C, 5th district: 245 DEG C, 6th district: 235 DEG C, head temperature: 175 DEG C, engine speed 30 turns/min, head pressure: 15 ~ 20MPa.
The molten materials being heated to specified temperature in machine barrel, extrude pipe with the pressure specified and speed between mouth mould and plug; Described die head mouth mould and plug adopt the short structure of cone, and as shown in schematic diagram 2, schematic diagram 3, schematic diagram 4, the tapering of interior external mold is 55 °, and length is 40mm; Material is flowed out by the gap between interior collar extension mould, and forming viscous state thickness is 2.5mm pipe, and pipe through cooling through sizing limit, limit, vacuum sizing room cold water under the traction of tractor, and vacuum degree control is at-0.75MPa.
The test result of high-temperature resistant inner lining oil pick-up tube liner tubing prepared by the present embodiment is in table 2.
The performance index that table 2 high-temperature resistant inner lining oil pick-up tube liner tubing reaches
Embodiment 3
A kind of high-temperature resistant inner lining oil pick-up tube liner tubing, described liner tubing is prepared from grains dedicated material by the component of following kg, by particulate material extrusion moulding tubing:
Number-average molecular weight is the polyhexamethylene adipamide of 30,000-5 ten thousand: 23kg;
Terpolymer EP rubber: 10kg;
Number-average molecular weight is the grafted polyolefin olefin elastomer of 50,000-10 ten thousand: 1kg;
N, N '-4,4 '-diphenyl methane dimaleimide: 5kg;
Antioxidant BHT: 5kg;
Antioxidant 4010: 1kg;
Linking agent dicumyl peroxide: 0.4kg;
Grafting catalysts three is oxidized two rubidiums: 0.04kg.
A kind of preparation method preparing described high-temperature resistant inner lining oil pick-up tube liner tubing, step is with embodiment 1, the wherein parameter of twin screw extruder a: district: 180 DEG C, 2nd district: 260 DEG C, 3rd district: 300 DEG C, 4th district: 280 DEG C, 5th district: 240 DEG C, 6th district: 230 DEG C, head temperature: 180 DEG C, engine speed 45 turns/min, head pressure: 18MPa.Dry moisture content in particulate material according to the mode of embodiment 1, add the moisture trapping agent of Nanjing DSM company, every 1000kg particulate material consumption is 3kg, mix with the special material for tube of drying, the parameter of setting single screw extrusion machine a: district: 230 DEG C, 2nd district: 250 DEG C, 3rd district: 258 DEG C, 4th district: 265 DEG C, 5th district: 265 DEG C, 6th district: 265 DEG C, head temperature: 180 DEG C, engine speed 55 turns/min, head pressure: 15 ~ 20MPa.
The molten materials being heated to specified temperature in machine barrel, extrude pipe with the pressure specified and speed between mouth mould and plug; Described die head mouth mould and plug adopt the short structure of cone, and as shown in schematic diagram 2, schematic diagram 3, schematic diagram 4, the tapering of interior external mold is 60 °, and length is 30mm; Material is flowed out by the gap between interior collar extension mould, and forming viscous state thickness is 4mm pipe, and pipe through cooling through sizing limit, limit, vacuum sizing room cold water under the traction of tractor, and vacuum degree control is at-0.7MPa.
The test result of high-temperature resistant inner lining oil pick-up tube liner tubing prepared by the present embodiment is in table 3.
The performance index that table 3 high-temperature resistant inner lining oil pick-up tube liner tubing reaches
Embodiment 4
A kind of high-temperature resistant inner lining oil pick-up tube liner tubing, described bushing pipe tubing is prepared from grains dedicated material by the component of following kg, by particulate material extrusion moulding tubing:
Molecular weight is the polyhexamethylene adipamide of 30,000-5 ten thousand: 24kg;
Terpolymer EP rubber: 8kg;
Molecular weight is the grafted polyolefin olefin elastomer of 50,000-10 ten thousand: 2kg;
N, N '-4,4 '-diphenyl methane dimaleimide: 12kg;
Antioxidant 1010: 4kg;
Anti-aging agent RD: 2kg;
Linking agent dicumyl peroxide: 0.5kg;
Grafting catalysts three is oxidized two rubidiums: 0.025kg.
A kind of preparation method preparing described high-temperature resistant inner lining oil pick-up tube liner tubing, comprise the steps: polyhexamethylene adipamide, terpolymer EP rubber, grafted polyolefin olefin elastomer, bismaleimides, oxidation inhibitor, anti-aging agent, linking agent, grafting catalysts adopts high-speed mixer to mix for subsequent use, material is sucked with suction system in the barrel of single screw extrusion machine, the parameter of adjustment twin screw extruder a: district: 180 DEG C, 2nd district: 260 DEG C, 3rd district: 300 DEG C, 4th district: 280 DEG C, 5th district: 240 DEG C, 6th district: 230 DEG C, head temperature: 180 DEG C, engine speed 45 turns/min, head pressure: 18MPa.Dry moisture content in particulate material according to the mode of embodiment 1, add the moisture trapping agent of Nanjing DSM company, every 1000kg particulate material consumption is 4kg, mix with the special material for tube of drying, the parameter of setting single screw extrusion machine a: district: 225 DEG C, 2nd district: 245 DEG C, 3rd district: 255 DEG C, 4th district: 260 DEG C, 5th district: 260 DEG C, 6th district: 260 DEG C, head temperature: 175 DEG C, engine speed 40 turns/min, head pressure: 15 ~ 20MPa.
The molten materials being heated to specified temperature in machine barrel, extrude pipe with the pressure specified and speed between mouth mould and plug; Described die head mouth mould and plug adopt the short structure of cone, and as shown in schematic diagram 2, schematic diagram 3, schematic diagram 4, the tapering of interior external mold is 45 °, and length is 60mm; Material is flowed out by the gap between interior collar extension mould, and forming viscous state thickness is 3mm pipe, and pipe through cooling through sizing limit, limit, vacuum sizing room cold water under the traction of tractor, and vacuum degree control is at-0.7MPa.The test result of high-temperature resistant inner lining oil pick-up tube liner tubing prepared by the present embodiment is in table 4.
The performance index that table 4 high-temperature resistant inner lining oil pick-up tube liner tubing reaches
Embodiment 5
A kind of high-temperature resistant inner lining oil pick-up tube liner tubing, described liner tubing is prepared from grains dedicated material by the component of following kg, by particulate material extrusion moulding tubing:
Number-average molecular weight is the polyhexamethylene adipamide of 30,000-5 ten thousand: 21kg;
Terpolymer EP rubber: 4kg;
Number-average molecular weight is the grafted polyolefin olefin elastomer of 50,000-10 ten thousand: 7kg;
N, N '-4,4 '-diphenyl methane dimaleimide: 8kg;
Antioxidant 300: 4kg;
Anti-aging agent 1010:2kg;
Linking agent PBO:0.3kg;
Grafting catalysts three is oxidized two rubidiums: 0.025kg.
A kind of preparation method preparing described high-temperature resistant inner lining oil pick-up tube liner tubing, its processing step is with embodiment 4, the parameter of described twin screw extruder a: district: 180 DEG C, 2nd district: 260 DEG C, 3rd district: 300 DEG C, 4th district: 280 DEG C, 5th district: 240 DEG C, 6th district: 230 DEG C, head temperature: 180 DEG C, engine speed 45 turns/min, head pressure: 18MPa.Dry moisture content in particulate material according to the mode of embodiment 1, add the moisture trapping agent of Nanjing DSM company, every 1000kg particulate material consumption is 5kg, mix with the special material for tube of drying, the parameter of setting single screw extrusion machine a: district: 240 DEG C, 2nd district: 250 DEG C, 3rd district: 268 DEG C, 4th district: 265 DEG C, 5th district: 275 DEG C, 6th district: 275 DEG C, head temperature: 185 DEG C, engine speed 60 turns/min, head pressure: 15 ~ 20MPa.
The molten materials being heated to specified temperature in machine barrel, extrude pipe with the pressure specified and speed between mouth mould and plug; Described die head mouth mould and plug adopt the short structure of cone, and as shown in schematic diagram 2, schematic diagram 3, schematic diagram 4, the tapering of interior external mold is 50 °, and length is 50mm; Material is flowed out by the gap between interior collar extension mould, and forming viscous state thickness is 5mm pipe, and pipe through cooling through sizing limit, limit, vacuum sizing room cold water under the traction of tractor, and vacuum degree control is at-0.8MPa.
The test result of high-temperature resistant inner lining oil pick-up tube liner tubing prepared by the present embodiment is in table 5.
The performance index that table 5 high-temperature resistant inner lining oil pick-up tube liner tubing reaches
A kind of high-temperature resistant inner lining oil pick-up tube, comprises base tube 2, and is provided with the internal lining pipe 3 described in embodiment 1-5 inside described base tube 2.The two ends of described internal lining pipe 3 are equipped with towards the flange 4 of described base tube 2, and base tube 2 is positioned at two flange, 4 forming regions, and the two ends bottom of thread of base tube 2 keeps concordant with the outer side that two flange 4 are formed respectively.High-temperature resistant inner lining oil pick-up tube also comprises the box cupling 1 for being connected in series two oil pick-up tube, as depicted in figs. 1 and 2, box cupling 1 is provided with internal thread, screw thread 12 in steel oil pick-up tube is outside screw (i.e. base tube 2 end thread), being matched by screw thread in the end of box cupling 1 and base tube 2, by box cupling, many oil pick-up tube is connected to oil well depth.It is 4-10cm that box cupling 1 and high-temperature resistant inner lining oil pick-up tube are socketed length.
Socket length described herein refers to the length of described box cupling 1 and described oil pick-up tube socket overlapping region.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a high-temperature resistant inner lining oil pick-up tube, it is characterized in that, described high-temperature resistant inner lining oil pick-up tube comprises described base tube (2) and high-temperature resistant inner lining tubing (3), and described high-temperature resistant inner lining tubing (3) is arranged on the inner side of described base tube (2).
2. a kind of high-temperature resistant inner lining oil pick-up tube according to claim 1, it is characterized in that, described internal lining pipe (3) two ends are equipped with towards the flange of described base tube (2) (4), the end of described base tube (2) is positioned at flange described in two (4) institute forming region, and the two ends bottom of thread of base tube (2) keeps concordant with the outer side that flange described in two (4) is formed respectively.
3. a kind of high-temperature resistant inner lining oil pick-up tube according to claim 1 and 2, it is characterized in that, described high-temperature resistant inner lining oil pick-up tube also comprises the box cupling (1) for being connected in series oil pick-up tube described in two, described box cupling (1) is provided with internal thread, base tube (2) both ends in described oil pick-up tube are provided with outside screw, being matched by screw thread in the end of described box cupling (1) and base tube (2), by box cupling, many oil pick-up tube is connected to oil well depth.
4. a kind of high-temperature resistant inner lining oil pick-up tube according to claim 3, is characterized in that, it is 4-10cm that described box cupling (1) and described oil pick-up tube (11) are socketed length.
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| CN (1) | CN204022720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468158A (en) * | 2015-08-14 | 2017-03-01 | 中国石油化工股份有限公司 | A kind of realize the matching method that the wear-resistant anti-corrosion energy-conservation of rod-pumped well is taken out deeply |
| CN110273653A (en) * | 2019-07-17 | 2019-09-24 | 山东墨龙石油机械股份有限公司 | Bimetallic is anti-corrosion tubing and casing and its attachment device |
-
2014
- 2014-07-30 CN CN201420426833.XU patent/CN204022720U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468158A (en) * | 2015-08-14 | 2017-03-01 | 中国石油化工股份有限公司 | A kind of realize the matching method that the wear-resistant anti-corrosion energy-conservation of rod-pumped well is taken out deeply |
| CN110273653A (en) * | 2019-07-17 | 2019-09-24 | 山东墨龙石油机械股份有限公司 | Bimetallic is anti-corrosion tubing and casing and its attachment device |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20190730 |