CN101481452A - Polyurethane self-sealing rubber core for well drilling and production process - Google Patents
Polyurethane self-sealing rubber core for well drilling and production process Download PDFInfo
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- CN101481452A CN101481452A CNA2009100139511A CN200910013951A CN101481452A CN 101481452 A CN101481452 A CN 101481452A CN A2009100139511 A CNA2009100139511 A CN A2009100139511A CN 200910013951 A CN200910013951 A CN 200910013951A CN 101481452 A CN101481452 A CN 101481452A
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Abstract
The invention discloses a well-drilling polyurethane self-sealing rubber core and a production process thereof, relating to a formulation design of a well-drilling polyurethane self-sealing rubber core and a preparation process thereof. The invention is characterized in that the formulation contains a component 1 and a component 2, and the ratio of component 1 to component 2 is 100:6 to 100:600 by mass ratio; the component 1 contains 0-76.4% of component A and 23.6-100% of component B in terms of mass percentage, while the component 2 contains 0-90% of component A and 10-100% of component C terms of mass percentage; and the component A contains polyalcohol, benzoyl chloride, phosphoric acid or hydrochloric acid, the component B is polyisocyanate, and the component C contains trimethylolpropane, glycol or ethylene glycol, inorganic filler, energy auxiliary agent and anti-foaming agent, benzoyl chloride, phosphoric acid or hydrochloric acid, and catalyst. The production process decreases the operation temperature in the production process, and reduces chemical gas emission, the power consumption and the harm to operators.
Description
Technical field
The invention belongs to organic synthesis thing field, be specifically related to a kind of formulating of recipe and manufacture craft thereof of polyurethane self-sealing rubber core for well drilling.
Background technology
Domestic existing drilling well based on rubber, also constantly had polyurethane material to occur with the self-sealing rubber core material in recent years.The making processes of the two all is the High Temperature High Pressure moulding, during easily the generation personnel scalded and mould by pressure such as is damaged at phenomenon.Wherein traditional rubber self-sealing rubber core, because the physical and mechanical properties of rubber own is relatively poor, wear resisting property is not good etc., causes self-sealing rubber core not long work-ing life.Though and common polyurethane self-sealing rubber core wear resisting property is improved, but under particular surroundings, especially under high water temperature of strong acid and strong base and situation about running up, the molecular chain of urethane is destroyed, the physical and mechanical properties of urethane itself descends significantly, finally cause the work-ing life of self-sealing rubber core also not long, limited the use of urethane aspect the drilling well self-sealing rubber core.
Summary of the invention
At above-mentioned existing technical deficiency, main purpose of the present invention is to provide a kind of polyurethane self-sealing rubber core, can strong alkali-acid resistance, anti-high water temperature, antifatigue, oil resistant, performance such as wear-resisting, reduce the Nei Shengre of polyurethane material.
The present invention solves the problems of the technologies described above the scheme that is adopted: research and develop a kind of polyurethane self-sealing rubber core for well drilling, it is characterized in that comprising first component and second component, first component and second component by quality ratio: first component: second component=100:6-100:600; The first component comprises the A component that accounts for 0-76.4% by percentage to the quality and the B component of 23.6-100%, and the second component comprises the A component that accounts for 0-90% by percentage to the quality and 10-100% C component; The A component comprises polyvalent alcohol, Benzoyl chloride or phosphoric acid or hydrochloric acid, and the B component adopts polyisocyanates, and the C component comprises TriMethylolPropane(TMP), glycol or ethylene glycol, mineral filler, energy auxiliary agent, defoamer, Benzoyl chloride or phosphoric acid or hydrochloric acid, catalyzer, each raw material in the C component is by percentage to the quality:
Alcohol or ethylene glycol+TriMethylolPropane(TMP) 50%-100%,
Mineral filler 0-50%,
Energy auxiliary agent 0-1%,
Defoamer 0-1.5%,
Benzoyl chloride or phosphoric acid or hydrochloric acid 0-0.5%,
Catalyzer 0-0.5%.
Polyvalent alcohol among the present invention adopts polycarbonate polyol, polycaprolactone polyol, and the polytetrahydrofuran ethoxylated polyhydric alcohol, by percentage to the quality: total content 〉=99.9% of polycarbonate polyol, polycaprolactone polyol, polytetrahydrofuran ethoxylated polyhydric alcohol.The B component adopts vulcabond.First component and second component are mixed and made into polyurethane self-sealing rubber core for well drilling.
The primitive reaction mechanism of preparation polyurethane self-sealing rubber core for well drilling is:
The first step generates isocyanate-terminated polyurethane prepolymer by polyvalent alcohol and polyisocyanates reaction earlier;
(n+1)NCO-R1-NCO+nOH-R2-0H-------nNCO-R3-NCO
Second step was expanded the refining crosslinking reaction by polyurethane prepolymer and small molecules polyvalent alcohol again.
NNCO-R3-NCO+nOH-R4-0H---------polyurethane high molecule material
Among the present invention, mineral filler can be adopted a kind of in white carbon black, zeolite, talcum powder, lime carbonate, the silica powder.Catalyzer can adopt a kind of in stannous octoate, dibutyl tin two lauric acid, the organo-bismuth.
In order to make polyurethane self-sealing rubber core for well drilling simple and safely, the production technique that the present invention adopts is characterized in that carrying out successively as follows:
(1) steel die that will be coated with polytetrafluorethylecoatings coatings assembles, and opens loam cake, is placed on the vulcanizing press;
First and second liang of components that (2) will prepare are carried out vacuum defoamation;
(3) first and second liang of components after the vacuum defoamation are proportionally carried out vacuum defoamation behind the thorough mixing once more;
(4) mixture after the deaeration is taken out, slowly pour into, build extrusion forming on the lithographic plate vulcanizer behind the loam cake along mould inner wall;
(5) polyurethane self-sealing rubber core after the moulding is taken out from mould, repair the corner, carry out surface treatment;
(6) polyurethane self-sealing rubber core that trims being put into baking oven carries out making polyurethane self-sealing rubber core after the sulfidizing.
The beneficial effect that the present invention had is:
1. the present invention adopts the polyurethane elastomer that PPDI obtains as isocyanate component, and its physical and mechanical properties is good, and rebound resilience, wear resistance, fatigue resistance, thermotolerance and wet fastness are good, and dynamic properties is good.
2. the present invention adopts polycarbonate polyol, polycaprolactone polyol, the urethane bullet wear resistance that the polytetrahydrofuran ethoxylated polyhydric alcohol obtains as the polyol component in the invention system, the over-all properties of its rebound resilience, compression set and the anti-chemical-resistant resistance of heatproof etc. is more excellent.
3. the present invention has added the mineral filler through Treatment with activating agent in the second component, has introduced the complexing particle.Mineral filler and polyvalent alcohol etc. be through fully mixed, and the complexing particle is just unordered is distributed in that each is intermolecular, has formed new chemical bond, has at first played to strengthen and has mended tough effect, has improved the mechanical property of polyurethane self-sealing rubber core.Secondly, because inorganic particle filled molecule space in a large number, increased the space damping, thus when other media are entering between polyurethane molecular at first with complexing particle generation physical exchange, slowed down of the influence of other media to a certain extent to polyurethane self-sealing rubber core.In addition, add the contraction that mineral filler can also reduce polyurethane self-sealing rubber core.Reduce the cost of polyurethane self-sealing rubber core.
4. the present invention adopts the small molecules polyvalent alcohol as the chain extension-crosslinking agent, is different from the Ammonia chain extension-crosslinking agent that conventional polyurethanes is used, and is in use safer, more environmental protection.
5. the polyurethane products that reaction system of the present invention obtains all improve a lot, and have reduced the Nei Shengre of polyurethane material at strong alkali-acid resistance, anti-high water temperature, antifatigue, oil resistant, aspect such as wear-resisting.The polyurethane self-sealing rubber core of the present invention's preparation is compared the work-ing life of rubber self-sealing rubber core and has been improved more than the twice, and improved more than three times the work-ing life of more common polyurethane self-sealing rubber core.
The beneficial effect of the present invention on manufacturing process concentrates on the following aspects:
1. temperature operation during the present invention adopts on the manufacture craft of polyurethane self-sealing rubber core, middle temperature reaction, middle temperature moulding.The mixing temperature of the general raw material of operation of conventional polyurethanes goods is more than 80 ℃, and die temperature and lithographic plate vulcanizer are more than 100 ℃.The mixing temperature of the first and second two components of the present invention, die temperature and lithographic plate vulcanizer all about 60 ℃, greatly reduce the service temperature in the production process, have reduced distributing of chemical gases, have reduced electric use, have reduced operator's harm.
2. the mould of the present invention's use is the steel die that is coated with polytetrafluorethylecoatings coatings.Be different from the ordinary steel molding jig, the steel die that is coated with polytetrafluorethylecoatings coatings does not need to smear releasing agent in process of production and just polyurethane product can be taken out smoothly, reduce operation steps, reduced the pollution of goods, reduced the cost of manufacture of goods.
Embodiment
Embodiment 1
One, the preparation of polyurethane self-sealing rubber core prescription.
1. the first step, selected raw-material first time hybrid reaction:
(1) preparation of A component:
Weighing polycaprolactone polyol (1000Mw) 1000g in having the encloses container of agitator, with the mixture of 1g Benzoyl chloride or phosphoric acid or hydrochloric acid after stirring 2 hours under 110 ℃ the environment, mixture begins cooling, can use after 80 ℃.
(2) preparation B component adopts phenylene diisocyanate;
(3) preparation of C component:
Weighing butyleneglycol 84.6g in having the encloses container of agitator, Benzoyl chloride 0.1g, organic zinc 0.02g, after stirring 2 hours under the environment under 110 ℃ the environment, mixture begins cooling, can use after 80 ℃ with mixture.
2. second step, selected raw-material second time hybrid reaction
(1) preparation of first component:
Weighing A component 1000g in having the encloses container of agitator, vacuum hydro-extraction is 2.5 hours under 115 ± 5 ℃ environment, and dehydration vacuum tightness is between-0.095-0.001mpa.The material temperature of the mixture after the dehydration is reduced to below 80 ℃, adds the B component of 320g, slowly be heated to 80 ± 5 ℃, be incubated 2.5 hours, be the performed polymer that makes.Analyze the NCO percentage composition of performed polymer, room temperature is placed after 24 hours and can be used.
(2) preparation of second component:
Weighing butyleneglycol 84.6g in having the encloses container of agitator, Benzoyl chloride 0.1g, organic zinc 0.02g under 110 ℃ environment, stirs mixture greater than after 0.5 hour, mixture begins cooling, less than 80 ℃ after can use.
(3) with first component and second component hybrid reaction, first component and second component are counted with mass ratio:
First component: second component=100:6
(4) first component and second component hybrid reaction are made polyurethane self-sealing rubber core for well drilling.
Two, the manufacturing process of polyurethane self-sealing rubber core
1. the steel die that will be coated with polytetrafluorethylecoatings coatings assembles, and opens loam cake, is placed on the vulcanizing press.The vulcanizer temperature remains between 55 ℃.
2. first and second liang of components that will prepare are carried out vacuum defoamation.First and second liang of component material temperature remain between 20-80 ℃, the vacuum tightness of deaeration remains on-0.095-0.001mpa between.First and second liang of component material temperature are 60 ± 5 ℃.
3. first and second liang of components after the vacuum defoamation are proportionally carried out vacuum defoamation behind the thorough mixing once more.The mixing temperature of first and second liang of components remains between 55-65 ℃, the vacuum tightness of deaeration remains on-0.095-0.001mpa between.
4. the mixture after the deaeration is taken out, slowly pour into, build extrusion forming on the lithographic plate vulcanizer behind the loam cake along mould inner wall.Between the temperature of mould remains between 55-65 ℃ during pressurization.
5. the polyurethane self-sealing rubber core after the moulding is taken out from mould, repair the corner, carry out surface treatment.
6. the polyurethane self-sealing rubber core that trims being put into baking oven vulcanizes.Oven temperature remains between 110 ℃, is 16-20 hour during sulfuration.
7. with the polyurethane self-sealing rubber core warehouse-in that vulcanizates.
Embodiment 2
One, the preparation of polyurethane self-sealing rubber core prescription.
1. the first step, selected raw-material first time hybrid reaction:
(1) preparation of A component:
Weighing polycaprolactone polyol (1000Mw) 300g in having the encloses container of agitator, polytetrahydrofuran ethoxylated polyhydric alcohol (1000Mw) 700g, with the mixture of 1g Benzoyl chloride or phosphoric acid or hydrochloric acid after stirring 2 hours under 110 ℃ the environment, mixture begins cooling, can use after 80 ℃.
(2) preparation B component adopts phenylene diisocyanate;
(3) preparation of C component:
Weighing butyleneglycol 84.6g in having the encloses container of agitator, Benzoyl chloride 0.1g, organic zinc 0.02g, after stirring 2 hours under the environment under 110 ℃ the environment, mixture begins cooling, can use after 80 ℃ with mixture.
2. second step, selected raw-material second time hybrid reaction
(1) preparation of first component:
Weighing A component 1000g in having the encloses container of agitator, vacuum hydro-extraction is 2.5 hours under 115 ± 5 ℃ environment, and dehydration vacuum tightness is between-0.095-0.001mpa.The material temperature of the mixture after the dehydration is reduced to below 80 ℃, adds the B component of 320g, slowly be heated to 80 ± 5 ℃, be incubated 2.5 hours, be the performed polymer that makes.Analyze the NCO percentage composition of performed polymer, room temperature is placed after 24 hours and can be used.
(2) preparation of second component:
Weighing butyleneglycol 84.6g in having the encloses container of agitator, Benzoyl chloride 0.1g, organic zinc 0.02g under 110 ℃ environment, stirs mixture greater than after 0.5 hour, mixture begins cooling, less than 80 ℃ after can use.
(3) with first component and second component hybrid reaction, first component and second component are counted with mass ratio:
First component: second component=100:6.4
(4) first component and second component hybrid reaction are made polyurethane self-sealing rubber core for well drilling.
Two, the manufacturing process of polyurethane self-sealing rubber core
1. the steel die that will be coated with polytetrafluorethylecoatings coatings assembles, and opens loam cake, is placed on the vulcanizing press.The vulcanizer temperature remains between 60 ℃.
2. first and second liang of components that will prepare are carried out vacuum defoamation.First and second liang of component material temperature remain between 20-80 ℃, the vacuum tightness of deaeration remains on-0.095-0.001mpa between.First and second liang of component material temperature are 60 ± 5 ℃.
3. first and second liang of components after the vacuum defoamation are proportionally carried out vacuum defoamation behind the thorough mixing once more.The mixing temperature of first and second liang of components remains between 55-65 ℃, the vacuum tightness of deaeration remains on-0.095-0.001mpa between.
4. the mixture after the deaeration is taken out, slowly pour into, build extrusion forming on the lithographic plate vulcanizer behind the loam cake along mould inner wall.Between the temperature of mould remains between 55-65 ℃ during pressurization.
5. the polyurethane self-sealing rubber core after the moulding is taken out from mould, repair the corner, carry out surface treatment.
6. the polyurethane self-sealing rubber core that trims being put into baking oven vulcanizes.Oven temperature remains between 115 ℃, is 16-20 hour during sulfuration.
7. with the polyurethane self-sealing rubber core warehouse-in that vulcanizates.
Embodiment 3
One, the preparation of polyurethane self-sealing rubber core prescription.
1. the first step, selected raw-material first time hybrid reaction:
(1) preparation of A component:
Weighing polycaprolactone polyol (1000Mw) 300g in having the encloses container of agitator, polytetrahydrofuran ethoxylated polyhydric alcohol (1000Mw) 700g, with the mixture of 1g Benzoyl chloride or phosphoric acid or hydrochloric acid after stirring 2 hours under 110 ℃ the environment, mixture begins cooling, can use after 80 ℃.
(2) preparation B component adopts phenylene diisocyanate;
(3) preparation of C component:
Weighing butyleneglycol 84.6g in having the encloses container of agitator, Benzoyl chloride 0.1g, organic zinc 0.02g, after stirring 2 hours under the environment under 110 ℃ the environment, mixture begins cooling, can use after 80 ℃ with mixture.
2. second step, selected raw-material second time hybrid reaction
(1) preparation of first component:
Weighing A component 500g in having the encloses container of agitator, vacuum hydro-extraction is 2.5 hours under 115 ± 5 ℃ environment, and dehydration vacuum tightness is between-0.095-0.001mpa.The material temperature of the mixture after the dehydration is reduced to below 80 ℃, adds the B component of 320g, slowly be heated to 80 ± 5 ℃, be incubated 2.5 hours, be the performed polymer that makes.Analyze the NCO percentage composition of performed polymer, room temperature is placed after 24 hours and can be used.
(2) preparation of second component:
Weighing A component 500g in having the encloses container of agitator under 110 ℃ environment, stirs mixture greater than after 0.5 hour, and mixture begins cooling, less than 80 ℃ after can use.
(3) with first component and second component hybrid reaction, first component and second component are counted with mass ratio:
First component: second component=100:64.
(4) first component and second component hybrid reaction are made polyurethane self-sealing rubber core for well drilling.
Two, the manufacturing process of polyurethane self-sealing rubber core
1. the steel die that will be coated with polytetrafluorethylecoatings coatings assembles, and opens loam cake, is placed on the vulcanizing press.The vulcanizer temperature remains between 65 ℃.
2. first and second liang of components that will prepare are carried out vacuum defoamation.First and second liang of component material temperature remain between 20-80 ℃, the vacuum tightness of deaeration remains on-0.095-0.001mpa between.First and second liang of component material temperature are 60 ± 5 ℃.
3. first and second liang of components after the vacuum defoamation are proportionally carried out vacuum defoamation behind the thorough mixing once more.The mixing temperature of first and second liang of components remains between 55-65 ℃, the vacuum tightness of deaeration remains on-0.095-0.001mpa between.
4. the mixture after the deaeration is taken out, slowly pour into, build extrusion forming on the lithographic plate vulcanizer behind the loam cake along mould inner wall.Between the temperature of mould remains between 55-65 ℃ during pressurization.
5. the polyurethane self-sealing rubber core after the moulding is taken out from mould, repair the corner, carry out surface treatment.
6. the polyurethane self-sealing rubber core that trims being put into baking oven vulcanizes.Oven temperature remains between 120 ℃, and curing time is 16-20 hour.
7. with the polyurethane self-sealing rubber core warehouse-in that vulcanizates.
Embodiment 4
One, the preparation of polyurethane self-sealing rubber core prescription.
1. the first step, selected raw-material first time hybrid reaction:
(1) preparation of A component:
Weighing polycaprolactone polyol (1000Mw) 300g in having the encloses container of agitator, polytetrahydrofuran ethoxylated polyhydric alcohol (1000Mw) 700g, with the mixture of 1g Benzoyl chloride or phosphoric acid or hydrochloric acid after stirring 2 hours under 110 ℃ the environment, mixture begins cooling, can use after 80 ℃.
(2) preparation B component adopts phenylene diisocyanate;
(3) preparation of C component:
Weighing butyleneglycol 84.6g in having the encloses container of agitator, Benzoyl chloride 0.1g, organic zinc 0.02g, after stirring 2 hours under the environment under 110 ℃ the environment, mixture begins cooling, can use after 80 ℃ with mixture.
2. second step, selected raw-material second time hybrid reaction
(1) preparation of first component:
The first component all adopts the B component,
(2) preparation of second component:
Weighing A component 1000g stirs mixture under 110 ℃ environment in having the encloses container of agitator, mixture begin the cooling, less than 80 ℃ after can use.
(3) with first component and second component hybrid reaction, first component and second component are counted with mass ratio:
First component: second component=100:304.
(4) first component and second component hybrid reaction are made polyurethane self-sealing rubber core for well drilling.
The manufacturing process of polyurethane self-sealing rubber core is identical with embodiment 1, repeats no more.
Embodiment 5
One, the preparation of polyurethane self-sealing rubber core prescription.
1. the first step, selected raw-material first time hybrid reaction:
(1) preparation of A component:
Weighing butyleneglycol 60 in having the encloses container of agitator, TriMethylolPropane(TMP) 24.6g, white carbon black 40g, functional agent 0.1g, defoamer 1g, Benzoyl chloride 0.1g, dibutyl tin two lauric acid 0.1g, mix the back after stirring 2 hours under 110 ℃ the environment, mixture begins cooling, can use after 80 ℃.
(2) preparation B component adopts phenylene diisocyanate;
(3) preparation of C component:
Weighing butyleneglycol 60g in having the encloses container of agitator, TriMethylolPropane(TMP) 24.6g, white carbon black 40g, functional agent 0.1g, defoamer 1g, Benzoyl chloride 0.1g, dibutyl tin two lauric acid 0.1g, mixture is after stirring 2 hours under the environment under 110 ℃ the environment, and mixture begins cooling, can use after 80 ℃.
2. second step, selected raw-material second time hybrid reaction
(1) preparation of first component:
The first component all is the B material
(2) preparation of second component:
Weighing A component 500g in having the encloses container of agitator, B component 125g stirs mixture under 110 ℃ environment, mixture begin the cooling, less than 80 ℃ after can use.
(3) with first component and second component hybrid reaction, first component and second component are counted with mass ratio:
First component: second component=100:600
(4) first component and second component hybrid reaction are made polyurethane self-sealing rubber core for well drilling.
The manufacturing process of polyurethane self-sealing rubber core is identical with embodiment 2, repeats no more.
Claims (8)
1. a polyurethane self-sealing rubber core for well drilling is characterized in that comprising first component and second component, first component and second component by quality ratio: first component: second component=100:6-100:600; The first component comprises the A component that accounts for 0-76.4% by percentage to the quality and the B component of 23.6-100%, and the second component comprises the A component that accounts for 0-90% by percentage to the quality and 10-100% C component; The A component comprises polyvalent alcohol, Benzoyl chloride or phosphoric acid or hydrochloric acid, and the B component adopts polyisocyanates, and the C component comprises TriMethylolPropane(TMP), glycol or ethylene glycol, mineral filler, energy auxiliary agent, defoamer, Benzoyl chloride or phosphoric acid or hydrochloric acid, catalyzer, each raw material in the C component is by percentage to the quality:
Alcohol or ethylene glycol+TriMethylolPropane(TMP) 50%-100%,
Mineral filler 0-50%,
Energy auxiliary agent 0-1%,
Defoamer 0-1.5%,
Benzoyl chloride or phosphoric acid or hydrochloric acid 0-0.5%,
Catalyzer 0-0.5%.
2. a kind of polyurethane self-sealing rubber core for well drilling according to claim 1, it is characterized in that polyvalent alcohol adopts polycarbonate polyol, polycaprolactone polyol, the polytetrahydrofuran ethoxylated polyhydric alcohol, by percentage to the quality: total content 〉=99.9% of polycarbonate polyol, polycaprolactone polyol, polytetrahydrofuran ethoxylated polyhydric alcohol.
3. a kind of polyurethane self-sealing rubber core for well drilling according to claim 1 and 2 is characterized in that the B component adopts vulcabond.
4. a kind of polyurethane self-sealing rubber core for well drilling according to claim 1 and 2 is characterized in that mineral filler adopts white carbon black or zeolite or talcum powder or lime carbonate or silica powder.
5. a kind of polyurethane self-sealing rubber core for well drilling according to claim 1 and 2 is characterized in that catalyzer adopts stannous octoate or dibutyl tin two lauric acid or organo-bismuth.
6. the production technique of a kind of polyurethane self-sealing rubber core for well drilling according to claim 1 is characterized in that carrying out successively as follows:
(1) steel die that will be coated with polytetrafluorethylecoatings coatings assembles, and opens loam cake, is placed on the vulcanizing press;
First and second liang of components that (2) will prepare are carried out vacuum defoamation;
(3) first and second liang of components after the vacuum defoamation are proportionally carried out vacuum defoamation behind the thorough mixing once more;
(4) mixture after the deaeration is taken out, slowly pour into, build extrusion forming on the lithographic plate vulcanizer behind the loam cake along mould inner wall;
(5) polyurethane self-sealing rubber core after the moulding is taken out from mould, repair the corner, carry out surface treatment;
(6) polyurethane self-sealing rubber core that trims being put into baking oven carries out making polyurethane self-sealing rubber core after the sulfidizing.
7. the production technique of a kind of polyurethane self-sealing rubber core for well drilling according to claim 6 is characterized in that the vulcanizer temperature remains between 55-65 ℃.
8. the production technique of a kind of polyurethane self-sealing rubber core for well drilling according to claim 6 is characterized in that oven temperature remains between 110-120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100139511A CN101481452A (en) | 2009-01-22 | 2009-01-22 | Polyurethane self-sealing rubber core for well drilling and production process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100139511A CN101481452A (en) | 2009-01-22 | 2009-01-22 | Polyurethane self-sealing rubber core for well drilling and production process |
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| CN101481452A true CN101481452A (en) | 2009-07-15 |
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| CNA2009100139511A Pending CN101481452A (en) | 2009-01-22 | 2009-01-22 | Polyurethane self-sealing rubber core for well drilling and production process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619593A (en) * | 2013-06-28 | 2018-01-23 | 株式会社吴羽 | A kind of rubber component of boring bar tool, and boring bar tool, and the recovery method of petroleum resources |
| CN110552652A (en) * | 2019-08-05 | 2019-12-10 | 大庆市普庆密封材料配件有限公司 | carbon silica gel self-sealing core for well drilling |
-
2009
- 2009-01-22 CN CNA2009100139511A patent/CN101481452A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619593A (en) * | 2013-06-28 | 2018-01-23 | 株式会社吴羽 | A kind of rubber component of boring bar tool, and boring bar tool, and the recovery method of petroleum resources |
| CN107619593B (en) * | 2013-06-28 | 2021-09-07 | 株式会社吴羽 | Rubber member for drilling tool, and method for recovering oil and gas resources |
| CN110552652A (en) * | 2019-08-05 | 2019-12-10 | 大庆市普庆密封材料配件有限公司 | carbon silica gel self-sealing core for well drilling |
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Application publication date: 20090715 |