CN104563858A - Screw drill stator made of PTFE (Polytetrafluoroethylene) and PTFE applied to stator - Google Patents
Screw drill stator made of PTFE (Polytetrafluoroethylene) and PTFE applied to stator Download PDFInfo
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- CN104563858A CN104563858A CN201410705531.0A CN201410705531A CN104563858A CN 104563858 A CN104563858 A CN 104563858A CN 201410705531 A CN201410705531 A CN 201410705531A CN 104563858 A CN104563858 A CN 104563858A
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- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 88
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 85
- -1 Polytetrafluoroethylene Polymers 0.000 title abstract 2
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 57
- 239000010439 graphite Substances 0.000 claims abstract description 57
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000005553 drilling Methods 0.000 claims abstract description 44
- 239000003365 glass fiber Substances 0.000 claims abstract description 44
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 38
- 239000004917 carbon fiber Substances 0.000 claims abstract description 38
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000000843 powder Substances 0.000 claims abstract description 37
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 27
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 27
- 239000000654 additive Substances 0.000 claims abstract description 18
- 230000000996 additive effect Effects 0.000 claims abstract description 18
- 239000013047 polymeric layer Substances 0.000 claims description 39
- 239000002245 particle Substances 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000012423 maintenance Methods 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 5
- 239000002253 acid Substances 0.000 abstract description 4
- 229920000642 polymer Polymers 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 2
- 150000007513 acids Chemical class 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 25
- 239000002184 metal Substances 0.000 description 12
- 229920001971 elastomer Polymers 0.000 description 7
- 239000002131 composite material Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000004512 die casting Methods 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000005453 pelletization Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 241000168254 Siro Species 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006168 hydrated nitrile rubber Polymers 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229920000295 expanded polytetrafluoroethylene Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C2/00—Rotary-piston engines
- F03C2/08—Rotary-piston engines of intermeshing-engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a screw drill stator made of PTFE (Polytetrafluoroethylene) and the PTFE applied to the stator. The stator mainly comprises a stator shell and a polymer layer in sequence from outside to inside, wherein the polymer layer is made of the PTFE. The PTFE applied to the drill screw stator comprises PTFE powder and an additive, wherein the additive comprises the following components: 1-10 percent of polyether-ether-ketone powder, 0.5-10 percent of carbon fiber, 0.5-20 percent of glass fiber and 0.5-10 percent of graphite, and the balance is the PTFE powder. The screw drill stator made of the PTFE with reasonable compatibility has favorable toughness at about 170 DEG C, and can withstand long-term corrosion of drilling fluid as well as strong acids and strong alkali, the service life is prolonged to over 250h, the maintenance period is prolonged, and further, the production cost and the maintenance cost of equipment are reduced.
Description
Technical field
The present invention relates to a kind of screw drilling tool stator using PTFE to make, and be applied to the PTFE of this stator.
Background technique
The performances such as teflon (PTFE) resin has excellent high-low temperature resistant, corrosion-resistant, ageing-resistant, height insulate, glutinous, but due to its poor dimensional stability, heat-conducting property is poor, creep is large, hardness is low, especially under loads easy to wear, make it be restricted in the application in the fields such as machinery carrying, fretting wear and seal lubrication.Therefore in order to expand the application of PTFE, needing it filling-modified, namely utilizing the advantages such as particle filled composite hardness is large, wear-resisting, dimensionally stable, thermal conductivity are good to improve the defect of PTFE.
And helicoid hydraulic motor be a kind of is power with drilling fluid, fluid pressure can be transferred to the positive displacement mud motor of mechanical energy.It is generally made up of a few part of bypass valve, screw motor, universal joint, bearing and live axle, and its core is screw motor.And screw motor is made up of stators and rotators.In prior art, as shown in Figure 1, stator comprises the housing 100 of cast and mates the rubber bushing 201 be close-coupled in inner walls, the inwall of shown cast housing 100 is provided with the thread groove of indent, described thread groove is provided with at least 3 and is disposed in parallel in inner walls 100, the Hand of spiral of described thread groove is all consistent and with stator center axle for its Hand of spiral stretching, extension axle, described rubber bushing 201 by high-pressure injection, is mated in shape of threads and with housing 100 and is connected on the inwall of housing 100.
Owing to the tubular outer casing inwall of stator in prior art being provided with the thread groove of indent, therefore, tubular outer casing processing technique difficulty is high, complex forming technology, and produces more processing clout, greatly increases processing cost.In addition, rubber bushing is by high-pressure injection on the inwall of housing, and moulding process is also very complicated, and processing cost is high, and efficiency is low.And the rubber bushing material of helicoid hydraulic motor is generally NBR and HNBR in prior art, wherein, the limiting temperature (static state) of HNBR is 176 DEG C, but the long-term temperature of high temperature well is close to 170 DEG C, according to the performance characteristic of helicoid hydraulic motor, temperature is easy to the part concentrating on rubber bushing and rotor contact, the dynamic heat build up mutually extrude between stator and rotor, reversed.When temperature is higher and concentrate on above region for a long time, then rubber bushing will be caused aging, thus cause rubber failure.So the helicoid hydraulic motor of high temperature well is shorter for working life in prior art, generally only have more than 100 hour, life cycle is short, and maintenance requirement is high, has had a strong impact on the efficiency of drilling well work and has carried out progress, increases drilling cost.
In order to solve the problems referred to above that in prior art, helicoid hydraulic motor exists, step up resistance to wear resistant to elevated temperatures elastic material and the reliable bearing arrangement of manufacture and exploit for the manufacture of stator, thus the operating life of screw drill is significantly improved, develop low-speed big screw rod to be applicable to the key breakthrough direction that drilling deep hole and superdeep holes are also related domains simultaneously.
Summary of the invention
The object of the invention is for the above-mentioned problems in the prior art, a kind of long service life is proposed, cost of production and maintenance cost low, the screw drilling tool stator that the high use PTFE of drilling efficiency makes, and propose that a kind of cost of production is low, the PTFE being applied to screw drilling tool stator of long service life.
Object of the present invention realizes by following technical proposal: a kind of screw drilling tool stator using PTFE to make, is mainly stator metal outer pipe, polymeric layer from outside to inside successively, and described polymeric layer adopts PTFE to make.
The present invention utilize there is excellent chemical stability, polymeric layer that PTFE that corrosion resistance, sealing, height lubricate not viscosity, electrical insulating property and good anti-aging endurance prepares stator, use in screw drilling tool stator breakthroughly, thus make screw drilling tool stator have good tough elasticity at about 170 DEG C, the long-term corrosion of ability drilling fluid, strong alkali-acid resistance, dimensional stability is fabulous, working life can bring up to more than 250h, and extend maintenance period, and then reduce the maintenance cost of production and equipment.
As preferably, described polymeric layer inwall or outer wall are provided with the thread groove of indent, described thread groove is provided with at least 1 and is arranged on side by side on the wall of polymeric layer, and the Hand of spiral of described thread groove is all consistent and with stator center axle for its Hand of spiral stretching, extension axle.The present invention can arrange thread groove structure on the inwall of stator or on outer wall or on inwall and outer wall, can match identical with the corresponding thread groove arranged on stator metal outer pipe inwall by the thread groove structure that outer wall is arranged, play and fix more stable effect with stator metal outer pipe, stator structure stability can be improved, increase the service life, simultaneously according to the needs of production and application, the quantity of setting thread groove, be uniformly distributed on wall or uneven distribution or be closely adjacent to arrange on wall partly, the structure of stator is made to have larger flexibility, stator can according to rotor power, the parameter of the aspects such as torque comes arrangement and the design of actual selection thread groove.
As preferably, described thread groove is adjacent to be arranged on whole polymeric layer inwall or outer wall side by side.In the present invention, thread groove is arranged on the inwall of whole polymeric layer or the surface of outer wall with the mode spiral of or arranged side by side many, thus make stator to the torque power more stable and uniform of rotor, avoid in manufacturing operation process, because of unbalance stress, equipment is caused damage, thus can working life of extension device, reduce cost of production.
Another object of the present invention is also to provide a kind of PTFE being applied to screw drilling tool stator, comprise PTFE and additive, described additive comprises polyether-ether-ketone powder, carbon fiber, glass fibre and graphite, described each component composition (by percentage to the quality) is: polyether-ether-ketone powder: 1-10%, carbon fiber: 0.5-10%, glass fibre: 0.5-20%, graphite: 0.5-10%, surplus is polytetrafluorethylepowder powder.
Polyether-ether-ketone (PEEK) has excellent mechanical property and heat-resisting and chemicals-resistant erosion performance, add part PEEK, and compatibility adds carbon fiber, glass fibre, graphite etc. in PTFE, improves the combination property of PTFE.On the one hand, glass fibre and the fragility of carbon fiber own are comparatively large, and poor with basal body binding force, and in PTFE after filled glass fiber, graphite and carbon fiber, the impact strength of PTFE material can decline.And adding the impact of PTFE material impact strength of graphite is very not large, less than the impact of filling equivalent glass fibre.And when adding glass fibre and graphite modified PTFE material friction and wear behavior, the ratio of glass fibre and graphite is not easily too large.When considering that adding glass fibre, graphite and carbon fiber improves PTFE material friction and wear behavior, will consider that added filling-modified material is on the impact of PTFE impact property, one side toughness of material declines too large, causes the combination property of composite material to decline simultaneously.On the other hand, the toughness of pure PTFE is fine, and the glass fibre added is inorfil, the interchain slippage of PTFE macromolecular chain can be hindered, the stress that too much glass fibre can become composite material concentrates thing, and microscopic crack is more easily sprouted, thus causes tensile strength to reduce.Find to fill graphite, carbon fiber, glass fiber reinforcement PTFE material through experiment, its elongation at break and the simple filled glass fiber of modular ratio or simple graphite of filling will improve many.But when content of glass fiber is too much, modified ptfe is converted into brittle material, and its processibility worsens, and working life shortens.And carbon fiber price is higher.Therefore synthesise various reason, the present invention is by the carbon fiber of 0.5-10%, and the glass fibre of 0.5-20%, the graphite of 0.5-10% adds in the PTFE containing PEEK, obtains the modified ptfe material of better performances.
As preferably, be applied in the PTFE of screw drilling tool stator above-mentioned, the particle diameter of described 40-60% graphite is the particle diameter of 60-80 μm, 40-60% graphite is 30-50nm.Nano-graphite or micron graphite add the hardness that all can improve PTFE material, composite interpolation nanometer and micron graphite more can significantly improve the hardness of PTFE material, because graphite particle is distributed in body material, the macromolecular motion of PTFE can be stoped to a certain extent, improve the plastic deformation of body material, more graphite serves the effect of bearing load in PTFE material, and the hardness of PTFE material is increased to some extent.Nano-graphite can disperse in the base more equably, forms stronger combination interface with polymeric matrix, improves the performance of PTFE material.Therefore, the size controlling of the 40-60% of the graphite added in modified ptfe is 30-50nm at the particle diameter of 60-80 μm, 40-60% graphite by the present invention, by the acting in conjunction of nanometer and micron graphite, more effectively improves the hardness of material.
As preferably, be applied in the PTFE of screw drilling tool stator above-mentioned, the diameter of described carbon fiber, glass fibre is 10-20 μm, and slenderness ratio is (100-200): 1.
The stator of the helicoid hydraulic motor of application PTFE disclosed by the invention, the stator metal outer pipe comprising cast and the polymeric layer mated on compact siro spinning technology stator metal outer pipe inwall, polymeric layer and stator metal outer pipe are coaxially arranged, polymeric layer wall is provided with the thread groove of indent, thread groove is provided with at least 3 and is arranged on side by side on the wall of polymeric layer, and the Hand of spiral of thread groove is all consistent and with stator center axle for its Hand of spiral stretching, extension axle.
As preferably, thread groove is adjacent to be arranged on whole polymeric layer inwall side by side.Simultaneously stator outer wall can not have thread groove, to reduce difficulty of processing, can thread groove be set yet, be engaged ability to improve between stator with stator metal outer pipe, improve the steadiness of stator.
Compared with prior art, the present invention has following advantage:
1, the PTFE material compatibility being applied to screw drilling tool stator disclosed by the invention is reasonable, PEEK is added in PTFE, and the graphite etc. that composite interpolation carbon fiber, glass fibre, micron and nanometer are composite, improve heat resistance and the wear resistance of PTFE material, reduce frictional wear amount, reduce friction factor and linear expansion coeffcient, improve the hardness under high temperature, intensity.
2, the stator of helicoid hydraulic motor of the present invention adopts the rational PTFE material of compatibility to obtain, and stator material has good toughness at about 170 DEG C, strong alkali-acid resistance, the long-term corrosion of ability drilling fluid, and dimensional stability is fabulous, and working life brings up to more than 250h.
3, the present invention can extend the working life of stator effectively, extends maintenance period, and then reduces the maintenance cost of production and equipment.
Accompanying drawing explanation
The structural representation of a kind of embodiment of Fig. 1, stator disclosed by the invention;
The plan view (polymeric layer is uniform thickness not) of a kind of embodiment of Fig. 2, stator disclosed by the invention;
The plan view (polymeric layer uniform thickness) of the another kind of embodiment of Fig. 3, stator disclosed by the invention.
Reference numerals list:
1, stator metal outer pipe; 2, polymeric layer; 3, rotor.
Embodiment
Be below specific embodiments of the invention, and accompanying drawings is further described technological scheme of the present invention, but the present invention is not limited to these embodiments.
The screw drilling tool stator that use PTFE disclosed by the invention makes, be mainly stator metal outer pipe, polymeric layer successively from outside to inside, it is characterized in that, described polymeric layer adopts PTFE to make.
As preferably, described polymeric layer inwall or outer wall are provided with the thread groove of indent, described thread groove is provided with at least 1 and is arranged on side by side on the wall of polymeric layer, and the Hand of spiral of described thread groove is all consistent and with stator center axle for its Hand of spiral stretching, extension axle.
As preferably, described thread groove is adjacent to be arranged on whole polymeric layer inwall or outer wall side by side.
The PTFE being applied to screw drilling tool stator disclosed by the invention, comprise PTFE and additive, described additive comprises polyether-ether-ketone powder, carbon fiber, glass fibre and graphite, described each component composition (by percentage to the quality) is: polyether-ether-ketone powder: 1-10%, carbon fiber: 0.5-10%, glass fibre: 0.5-20%, graphite: 0.5-10%, surplus is polytetrafluorethylepowder powder.
As preferably, the particle diameter of described 40-60% graphite is the particle diameter of 60-80 μm, 40-60% graphite is 30-50nm.
As preferably, the diameter of described carbon fiber and glass fibre is 10-20 μm, and slenderness ratio is (100-200): 1.
Embodiment 1
A kind of PTFE being applied to screw drilling tool stator, comprise PTFE and additive, described additive comprises polyether-ether-ketone powder, carbon fiber, glass fibre and graphite, wherein, described each component composition (by percentage to the quality) is: polyether-ether-ketone powder: 5%, carbon fiber: 5%, glass fibre: 10%, graphite: 8%, surplus is polytetrafluorethylepowder powder.The particle diameter of described 50% graphite is 70 μm, and the particle diameter of 50% graphite is 40nm.The diameter of described carbon fiber and glass fibre is 15 μm, and slenderness ratio is 150:1.
When using above-mentioned PTFE to make screw drilling tool stator, PTFE, polyether-ether-ketone powder, carbon fiber, glass fibre and graphite are after high speed muller mixes, again through melting extruding pelletization be powder, then by extrude or the mode such as injection moulding or die casting is shaping obtains wherein a kind of application structure screw drilling tool stator as Figure 1-3.
Embodiment 2
A kind of PTFE being applied to screw drilling tool stator, comprise PTFE and additive, described additive comprises polyether-ether-ketone powder, carbon fiber, glass fibre and graphite, wherein, described each component composition (by percentage to the quality) is: polyether-ether-ketone powder: 8%, carbon fiber: 8%, glass fibre: 15%, graphite: 8%, surplus is polytetrafluorethylepowder powder.The particle diameter of described 45% graphite is 75 μm, and the particle diameter of 55% graphite is 35nm.The diameter of described carbon fiber and glass fibre is 12 μm, and slenderness ratio is 180:1.
When using above-mentioned PTFE to make screw drilling tool stator, PTFE, polyether-ether-ketone powder, carbon fiber, glass fibre and graphite are after high speed muller mixes, again through melting extruding pelletization be powder, then by extrude or the mode such as injection moulding or die casting is shaping obtains wherein a kind of application structure screw drilling tool stator as Figure 1-3.
Embodiment 3
A kind of PTFE being applied to screw drilling tool stator, comprise PTFE and additive, described additive comprises polyether-ether-ketone powder, carbon fiber, glass fibre and graphite, wherein, described each component composition (by percentage to the quality) is: polyether-ether-ketone powder: 6%, carbon fiber: 8%, glass fibre: 12%, graphite: 5%, surplus is polytetrafluorethylepowder powder.The particle diameter of described 55% graphite is 65 μm, and the particle diameter of 45% graphite is 45nm.The diameter of described carbon fiber and glass fibre is 18 μm, and slenderness ratio is 120:1.
When using above-mentioned PTFE to make screw drilling tool stator, PTFE, polyether-ether-ketone powder, carbon fiber, glass fibre and graphite are after high speed muller mixes, again through melting extruding pelletization be powder, then by extrude or the mode such as injection moulding or die casting is shaping obtains wherein a kind of application structure screw drilling tool stator as Figure 1-3.
Embodiment 4
A kind of PTFE being applied to screw drilling tool stator, comprise PTFE and additive, described additive comprises polyether-ether-ketone powder, carbon fiber, glass fibre and graphite, wherein, described each component composition (by percentage to the quality) is: polyether-ether-ketone powder: 5%, carbon fiber: 10%, glass fibre: 0.5%, graphite: 10%, surplus is polytetrafluorethylepowder powder.The particle diameter of described 40% graphite is 80 μm, and the particle diameter of 60% graphite is 30nm.The diameter of described carbon fiber and glass fibre is 10 μm, and slenderness ratio is 200:1.
When using above-mentioned PTFE to make screw drilling tool stator, PTFE, polyether-ether-ketone powder, carbon fiber, glass fibre and graphite are after high speed muller mixes, again through melting extruding pelletization be powder, then by extrude or the mode such as injection moulding or die casting is shaping obtains wherein a kind of application structure screw drilling tool stator as Figure 1-3.
Embodiment 5
A kind of PTFE being applied to screw drilling tool stator, comprise PTFE and additive, described additive comprises polyether-ether-ketone powder, carbon fiber, glass fibre and graphite, wherein, described each component composition (by percentage to the quality) is: polyether-ether-ketone powder: 10%, carbon fiber: 2%, glass fibre: 20%, graphite: 1%, surplus is polytetrafluorethylepowder powder.The particle diameter of described 60% graphite is 60 μm, and the particle diameter of 40% graphite is 50nm.The diameter of described carbon fiber and glass fibre is 20 μm, and slenderness ratio is 100:1.
When using above-mentioned PTFE to make screw drilling tool stator, PTFE, polyether-ether-ketone powder, carbon fiber, glass fibre and graphite are after high speed muller mixes, again through melting extruding pelletization be powder, then by extrude or the mode such as injection moulding or die casting is shaping obtains wherein a kind of application structure screw drilling tool stator as Figure 1-3.
As Figure 1-3, the stator of the helicoid hydraulic motor of application PTFE disclosed by the invention, the stator metal outer pipe 1 comprising cast and the polymeric layer 2 mated on compact siro spinning technology stator metal outer pipe 1 inwall, polymeric layer 2 and stator metal outer pipe 1 are coaxially arranged, the thread groove that only can be provided with indent on polymeric layer 2 inwall (forms the polymeric layer 2 not waiting wall thickness, see Fig. 2), also thread groove (the polymeric layer 2 of the wall thickness such as formation of indent can be provided with on polymeric layer 2 inner and outer wall, see Fig. 3), the thread groove that also only can be provided with indent when some is special on polymeric layer 2 outer wall forms the polymeric layer 2 not waiting wall thickness, thread groove is provided with at least 3 and is arranged on polymeric layer 2 inwall side by side, the Hand of spiral of thread groove is all consistent and with polymeric layer 2 central shaft for its Hand of spiral stretching, extension axle, polymeric layer 2 material all utilizes aforementioned PTFE, but this material is not limited to this application.
Preferred as one, thread groove is adjacent to be arranged on whole polymeric layer 2 inwall side by side, and namely between the peak valley of adjacent two thread grooves and peak base, seamless close apposition is arranged.Polymeric layer 2 outer wall can not have thread groove, to reduce difficulty of processing yet simultaneously.
Operationally, rotor 3 is drilled along spiral chute precession under pressure-driven in polymeric layer 2, realizes normal working.
Comparative example 1: the stator of the helicoid hydraulic motor that structure common material is common in prior art.
Comparative example 2: the stator of the helicoid hydraulic motor that non-modified PTFE obtains in prior art.
Stator in the stator of embodiment of the present invention 1-5 and comparative example is carried out testing property, and test result is as shown in table 1.
Table 1: the stator the performance test results of the embodiment of the present invention and comparative example
As known from Table 1, the present invention uses the rational PTFE of compatibility to make screw drilling tool stator, stator of the present invention in every respect performance is all better than the stator in comparative example, and stator of the present invention has good heat resistance and wear resistance, reduces frictional wear amount, improve the hardness under high temperature, intensity, the long-term corrosion of ability drilling fluid, strong alkali-acid resistance, working life brings up to more than 250h, extend maintenance period, and then reduce the maintenance cost of production and equipment.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although made a detailed description the present invention and quoted some specific embodiments as proof, to those skilled in the art, only otherwise it is obvious for leaving that the spirit and scope of the present invention can make various changes or revise.
Claims (6)
1. use the screw drilling tool stator that PTFE makes, be mainly stator case, polymeric layer successively from outside to inside, it is characterized in that, described polymeric layer adopts PTFE to make.
2. the screw drilling tool stator of use PTFE according to claim 1 making, it is characterized in that, described polymeric layer inwall or outer wall are provided with the thread groove of indent, described thread groove is provided with at least 1 and is arranged on side by side on the wall of polymeric layer, and the Hand of spiral of described thread groove is all consistent and with stator center axle for its Hand of spiral stretching, extension axle.
3. the screw drilling tool stator of use PTFE according to claim 1 making, it is characterized in that, described thread groove is adjacent to be arranged on whole polymeric layer inwall or outer wall side by side.
4. one kind is applied to the PTFE of screw drilling tool stator, it is characterized in that, comprise PTFE and additive, described additive comprises polyether-ether-ketone powder, carbon fiber, glass fibre and graphite, described each component composition (by percentage to the quality) is: polyether-ether-ketone powder: 1-10%, carbon fiber: 0.5-10%, glass fibre: 0.5-20%, graphite: 0.5-10%, surplus is polytetrafluorethylepowder powder.
5. the PTFE being applied to screw drilling tool stator according to claim 4, is characterized in that, the particle diameter of described 40-60% graphite is the particle diameter of 60-80 μm, 40-60% graphite is 30-50nm.
6. the PTFE being applied to screw drilling tool stator according to claim 4, is characterized in that, the diameter of described carbon fiber and glass fibre is 10-20 μm, and slenderness ratio is (100-200): 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410705531.0A CN104563858B (en) | 2014-11-28 | 2014-11-28 | A kind of screw drilling tool stator made using PTFE and the PTFE applied to the stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410705531.0A CN104563858B (en) | 2014-11-28 | 2014-11-28 | A kind of screw drilling tool stator made using PTFE and the PTFE applied to the stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104563858A true CN104563858A (en) | 2015-04-29 |
| CN104563858B CN104563858B (en) | 2018-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410705531.0A Active CN104563858B (en) | 2014-11-28 | 2014-11-28 | A kind of screw drilling tool stator made using PTFE and the PTFE applied to the stator |
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| Country | Link |
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| CN (1) | CN104563858B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023136839A1 (en) * | 2022-01-14 | 2023-07-20 | Halliburton Energy Services, Inc. | Positive displacement motor with a thermoplastic stator that can be replaceable |
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|---|---|---|---|---|
| CN1421613A (en) * | 2002-12-22 | 2003-06-04 | 崔乃林 | Screw pump made of polymer material and ceramic and its manufacture |
| CN101377213A (en) * | 2007-08-31 | 2009-03-04 | 日本电产株式会社 | Method of manufacturing thrust plate, bearing device, method of manufacturing bearing device, and spindle motor |
| CN101440693A (en) * | 2008-12-15 | 2009-05-27 | 淮安市井神钻采机具有限公司 | High temperature deep well screw drilling tool |
| US20090169404A1 (en) * | 2007-12-31 | 2009-07-02 | Olivier Sindt | High temperature progressive cavity motor or pump component and method of fabrication |
| WO2013126546A1 (en) * | 2012-02-21 | 2013-08-29 | Smith International, Inc. | Fiber reinforced elastomeric stator |
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- 2014-11-28 CN CN201410705531.0A patent/CN104563858B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1421613A (en) * | 2002-12-22 | 2003-06-04 | 崔乃林 | Screw pump made of polymer material and ceramic and its manufacture |
| CN101377213A (en) * | 2007-08-31 | 2009-03-04 | 日本电产株式会社 | Method of manufacturing thrust plate, bearing device, method of manufacturing bearing device, and spindle motor |
| US20090169404A1 (en) * | 2007-12-31 | 2009-07-02 | Olivier Sindt | High temperature progressive cavity motor or pump component and method of fabrication |
| CN101440693A (en) * | 2008-12-15 | 2009-05-27 | 淮安市井神钻采机具有限公司 | High temperature deep well screw drilling tool |
| WO2013126546A1 (en) * | 2012-02-21 | 2013-08-29 | Smith International, Inc. | Fiber reinforced elastomeric stator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023136839A1 (en) * | 2022-01-14 | 2023-07-20 | Halliburton Energy Services, Inc. | Positive displacement motor with a thermoplastic stator that can be replaceable |
| US11795761B2 (en) | 2022-01-14 | 2023-10-24 | Halliburton Energy Services, Inc. | Positive displacement motor with a thermoplastic stator that can be replaceable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104563858B (en) | 2018-07-10 |
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