CN109971053A - A kind of oil pumping machine well head airtight and watertight padding having polished rod repair ability - Google Patents
A kind of oil pumping machine well head airtight and watertight padding having polished rod repair ability Download PDFInfo
- Publication number
- CN109971053A CN109971053A CN201910178639.1A CN201910178639A CN109971053A CN 109971053 A CN109971053 A CN 109971053A CN 201910178639 A CN201910178639 A CN 201910178639A CN 109971053 A CN109971053 A CN 109971053A
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- China
- Prior art keywords
- polished rod
- well head
- pumping machine
- oil pumping
- repair ability
- Prior art date
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- Granted
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- 230000008439 repair process Effects 0.000 title claims abstract description 24
- 238000005086 pumping Methods 0.000 title claims abstract description 18
- 239000003921 oil Substances 0.000 claims abstract description 24
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229920001971 elastomer Polymers 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical group ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920006026 co-polymeric resin Polymers 0.000 claims abstract description 10
- 239000003822 epoxy resin Substances 0.000 claims abstract description 10
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 10
- 239000002199 base oil Substances 0.000 claims abstract description 9
- 239000004519 grease Substances 0.000 claims abstract description 7
- 239000004575 stone Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 239000004088 foaming agent Substances 0.000 claims abstract description 5
- 239000004014 plasticizer Substances 0.000 claims abstract description 5
- QWVMUSBBWGTKML-UHFFFAOYSA-N [Li].[Mo](=S)=S Chemical compound [Li].[Mo](=S)=S QWVMUSBBWGTKML-UHFFFAOYSA-N 0.000 claims abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 18
- 239000012188 paraffin wax Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 6
- YCZJVRCZIPDYHH-UHFFFAOYSA-N ditridecyl benzene-1,2-dicarboxylate Chemical group CCCCCCCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCCCCCCC YCZJVRCZIPDYHH-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000011496 polyurethane foam Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 239000012948 isocyanate Substances 0.000 claims description 2
- 150000002513 isocyanates Chemical group 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 2
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 claims 1
- 235000021180 meal component Nutrition 0.000 claims 1
- -1 phthalic acid Diester Chemical class 0.000 claims 1
- 239000000454 talc Substances 0.000 claims 1
- 229910052623 talc Inorganic materials 0.000 claims 1
- 235000012222 talc Nutrition 0.000 claims 1
- 229920001285 xanthan gum Polymers 0.000 claims 1
- 239000000945 filler Substances 0.000 abstract description 20
- 238000012856 packing Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 13
- 239000000084 colloidal system Substances 0.000 description 10
- 230000007423 decrease Effects 0.000 description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 208000013935 Electric injury Diseases 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- UHZZMRAGKVHANO-UHFFFAOYSA-M chlormequat chloride Chemical group [Cl-].C[N+](C)(C)CCCl UHZZMRAGKVHANO-UHFFFAOYSA-M 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000010920 waste tyre Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2321/00—Characterised by the use of unspecified rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use 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; Derivatives of such polymers
- C08J2427/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2427/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Emergency Medicine (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Material Composition (AREA)
Abstract
The present invention relates to a kind of oil pumping machine well head airtight and watertight paddings for having polished rod repair ability.Mainly solve the problems, such as that existing polished rod seriously affects packing padding sealing effect excessive wear caused by filler because of surface irregularity.This has the oil pumping machine well head airtight and watertight padding of polished rod repair ability, and component and proportion are as follows by mass percentage: rubber grain 25-50%；Epoxy resin 15-20%；Waxy stone 5-20%；SAP resin 5-10%；Chloroethylene copolymer resin 5-15%；Plasticizer 15-25%;Dehumidizer 3-5%；Foaming agent 1-2%；Curing agent 0.2-1.0%；Talcum powder 5-15%；Grease based on molybdenum disulfide lithium 5-10%；Base oil 3-5%.This has the oil pumping machine well head airtight and watertight padding of polished rod repair ability, the groove of polished rod surface defect can be made to be filled and led up and be hardened substantially, hot repair effect is reached, has reduced polished rod because surface irregularity is excessive wear caused by filler, extend the service life of packing padding.
Description
Technical field
The present invention relates to oil extraction in oil field field of engineering technology more particularly to a kind of rod-pumped wells for having polished rod repair ability
Mouth airtight and watertight padding.
Background technique
In recent years since the scale of tertiary oil production in oil field promotes, many factors cause the polished rod of rod-pumped well electrochemistry occur
The surface damage of the reasons such as burn into chemical attack, electric injury and mechanical scraping collision, the damage of polished rod also result in sternly packing padding
The abrasion of weight directly results in well head and the problems such as leakage is serious occurs, and replacement polished rod is time-consuming and laborious, brings greatly to oil field production
Trouble.
In response to the above problems, mainstream current in industry solution direction focuses mostly on promoting coated with wear-resisting alloy polished rod,
Such as patent No. CN200710118049.7 " a kind of anti-corrosion high-strength pumping-oil polish rod ", belong to a kind of surface Ni alloy powder thermal jet
Polished rod, higher cost are applied, and the secondary thermal spraying rehabilitation cost of the polished rod of surface damage is higher, lacks popularization economy.And patent
A kind of " New type blowout preventer box " of number CN203547646U description is then to do continuous scraping action to polished rod by packing box, is avoided
Polished rod damage, but its behavior itself is exactly the abrasion or damage of a kind of transition to polished rod.Similar invalid patent scheme further includes
CN2622382Y and CN2608678Y etc., at present there is no reliable inexpensive recovery techniques.
Summary of the invention
The invention reside in overcome existing polished rod present in background technique because surface irregularity or damage filler caused by
Excessive wear and the problem of seriously affect packing padding sealing effect, and provide a kind of rod-pumped well for having polished rod repair ability
Mouth airtight and watertight padding.This has the oil pumping machine well head airtight and watertight padding of polished rod repair ability, can be in a certain range to the polished rod of damage
It is repaired, reduces polished rod because surface irregularity or damage are excessive wear caused by filler, extend packing padding uses the longevity
Life.
The present invention solves the problems, such as that it can reach by following technical solution: this has the rod-pumped well of polished rod repair ability
Mouth airtight and watertight padding, component and proportion are as follows by mass percentage: rubber grain 25-50%；Epoxy resin 15-20%；
Waxy stone 5-20%；SAP resin 5-10%；Chloroethylene copolymer resin 5-15%；Plasticizer 15-25%;Dehumidizer 3-5%；Foaming agent
1-2%；Curing agent 0.2-1.0%；Talcum powder 5-15%；Grease based on molybdenum disulfide lithium 5-10%；Base oil 3-5%.
The effect for having the oil pumping machine well head airtight and watertight padding each component of polished rod repair ability is as follows:
The rubber grain is broken through multiple Mechanical Method using higher waste old raw materials of purity such as waste tire side wall, the useless inner tubes of a tyre
Broken mode obtains, and granularity differs for 1-10mm, and impurity < 30%.
The epoxy resin is propane type epoxy resin of di phenolic group pulvis.
The waxy stone be primary paraffin wax product or semi-refined paraffin wax any one；The semi-refined paraffin wax is 46-58# industry
Paraffin.
The SAP resin is polyacrylic high hydroscopic resin.
The chloroethylene copolymer resin is epoxy resin colloid tackifier.
The plasticizer is ditridecyl phthalate.
The dehumidizer is aluminium oxide.
The foaming agent is polyurethane foams.
The curing agent is isocyanates.
The talcum powder be wet-dry change attrition process >=the common talcum powder of 1000 purposes.
The base oil is paraffin base mineral oil.
The present invention also provides a kind of preparation methods of oil pumping machine well head airtight and watertight padding for having polished rod repair ability, including
Following steps:
(1) in proportion by the rubber grain of corresponding formula ratio, chloroethylene copolymer resin, aluminium oxide, ditridecyl phthalate, ring
Oxygen resin, talcum powder, SAP resin are heated up to 50-65 DEG C, are re-fed into blender continuously premixing stirring；
(2) it after waxy stone being heated to 80-90 DEG C of fusing, is added in running blender, is mixed with the raw material mixed and stirred in advance, continue
Stirring to fully absorb mix；
(3) after the temperature of charge in detection blender is reduced to 45 DEG C or less, investment polyurethane foams continues to stir 20min,
Molybdenum disulphide grease and base oil are added again, continue stirring to mixing；
(4) after mixed material is down to half solidification of room temperature, part talcum powder is poured into again and mixes discharging, is sealed.
The present invention can have the following beneficial effects: that this has the oil pumping of polished rod repair ability compared with above-mentioned background technique
Fragmentary granule materials state is presented using preceding in pumped well port airtight and watertight padding, can individually or disposable types are added in the other fillers of mixing
In wellhead packing box.Pressurization adjustment is carried out to filler according to conventional program after addition, filler with polished rod because rubbing under initial high pressure
Wiping can generate heat, melt the paraffin core in the filler in heat-affected zone, rubber grain, the chloroethene being wrapped in paraffin
The hot melt colloid composition that alkene copolymer resins, aluminium oxide, ditridecyl phthalate, epoxy resin, talcum powder are constituted is released,
Rapid spatial expansion, in packing box in reciprocatory movement, part holt melt colloidal materials occur to melt and are attached to light polished rod
Bar surface, redundance are taken out of by polished rod, packing padding and gland scrape effect clearly repeatedly under, colloid precipitate is by polished rod table
Surface damage position is filled and led up rapidly, and after temperature is down to filler fusing point or less, colloid surface realizes substantially dry, is filled out after 2-4 hours
The rapid curing molding of Material forms preliminary hardening, thus reduce polished rod because surface irregularity is excessive wear caused by filler,
Extend the service life of packing padding.Polished rod surface it is opposed flattened it is smooth after, the packing padding degree of wear decline, internal temperature with
Decline, colloid, which is precipitated, to be stopped, and packing padding is in normal sealing state.
The above-mentioned oil pumping machine well head airtight and watertight padding for having polished rod repair ability belongs to room temperature solid-state hot melt adhesive body material, in ring
Border temperature will heat after rising to preset 58 DEG C, and semi-fluid posture is presented, which has metal material
Preferable compatibility, can oil resistant it is alkali resistant, shape, trench and rough defect can be cheated to the contact surface of polished rod
Being filled property repairing, be down to 58 DEG C or less in temperature and reach colloid surface substantially dry, thus realize to damage polished rod
Line reparation.
Specific embodiment:
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1:
(1) first by rubber grain 25kg, chloroethylene copolymer resin 5kg, aluminium oxide 3kg, ditridecyl phthalate 15kg, epoxy
Resin pulvis 15kg, talcum powder 5kg, SAP resin 5kg oven are heated up to 50-65 DEG C, are re-fed into blender and are continuously pre-mixed
Stirring；
(2) it after 46-58# industrial paraffin 5kg being heated to 80-90 DEG C of fusing, is slowly added in running blender, and it is pre-
Mix and stir raw material mixing, continue stirring to fully absorb mix；
(3) after the temperature of charge in detection blender is reduced to 45 DEG C or less, investment polyurethane foams 1kg continues to stir
20min, then molybdenum disulphide grease 5kg and base oil 3kg is added, continue stirring to mixing；
(4) after mixed material is down to room temperature, part talcum powder 2.5kg is poured into again and mixes discharging, is sealed.
Embodiment 2:
(1) first by rubber grain 50kg, chloroethylene copolymer resin 15kg, aluminium oxide 5kg, ditridecyl phthalate 25kg, ring
Oxygen resin pulvis 20kg, talcum powder 10kg, SAP resin 10kg are heated up to 50-65 DEG C, are sent into continuously to be pre-mixed in blender and stir
It mixes；
(2) it after 46-58# industrial paraffin 20kg being heated to 80-90 DEG C of fusing, is added in running blender, and mixes and stirs in advance
Raw material mixing, continue stirring to fully absorb mix；
(3) after the temperature of charge in detection blender is reduced to 45 DEG C or less, investment polyurethane foams 2kg continues to stir
20min, then molybdenum disulphide grease 10kg and base oil 5kg is added, continue stirring to mixing；
(4) after mixed material is down to room temperature, part talcum powder 5kg is poured into again and mixes discharging, is sealed.
The oil pumping machine well head airtight and watertight padding for having polished rod repair ability of embodiment 1-2 preparation is presented fragmentary using preceding
Grain material state, can individually or the other fillers of mixing are added in the wellhead packing box of disposable type.According to conventional program after addition
Pressurization adjustment is carried out to filler, filler makes the filler in heat-affected zone because that can generate heat with polished rod friction under initial high pressure
In paraffin core melt, rubber grain, chloroethylene copolymer resin, aluminium oxide, the phthalic acid two being wrapped in paraffin
The hot melt colloid composition that ester, epoxy resin, talcum powder are constituted is released, rapid spatial expansion, and polished rod is past in packing box
In multiple motion process, part holt melt colloidal materials occur to melt and are attached to polished rod surface, and redundance is taken out of by polished rod, in disk
Root filler and gland are scraped under effect clearly repeatedly, and colloid precipitate fills and leads up rapidly polished rod surface damage position, is down in temperature
After below filler fusing point, colloid surface realizes that substantially dry, the rapid curing molding of filling body after 2-4 hours form preliminary hardening,
To reduce polished rod because surface irregularity is excessive wear caused by filler, extend the service life of packing padding.Polished rod table
Face it is opposed flattened it is smooth after, the decline of the packing padding degree of wear, internal temperature declines therewith, and colloid, which is precipitated, to be stopped, packing padding
In normal sealing state.By the above process as it can be seen that the position of polished rod surface irregularity is filled through vulcanizing for filler, heat is reached
The service life of repair efficiency, filler can extend to 20 times or more.
The oil pumping machine well head airtight and watertight padding for having polished rod repair ability is mainly used in polished rod and has damage, and filler is caused to wear
The excessive wellhead packing box easily revealed uses, and extends polished rod service life with cold operation mode by the hot repair to polished rod,
Delay to damage the polished rod replacement cycle, reduces running cost.
Claims (6)
1. a kind of oil pumping machine well head airtight and watertight padding for having polished rod repair ability, it is characterised in that: its component and proportion press quality
Percentages are as follows: rubber grain 25-50%；Epoxy resin 15-20%；Waxy stone 5-20%；SAP resin 5-10%；Vinyl chloride
Copolymer resins 5-15%；Plasticizer 15-25%;Dehumidizer 3-5%；Foaming agent 1-2%；Curing agent 0.2-1.0%；Talcum powder 5-
15%；Grease based on molybdenum disulfide lithium 5-10%；Base oil 3-5%.
2. a kind of oil pumping machine well head airtight and watertight padding for having polished rod repair ability according to claim 1, it is characterised in that:
Rubber grain partial size is the crushing rubber xanthan particles that 1-10mm is not waited, and impurity content is no more than 30%；Waxy stone is primary paraffin
Product or semi-refined paraffin wax any one；Talcum powder be wet-dry change attrition process >=the common talcum powder of 1000 purposes；Base oil
For paraffin base mineral oil.
3. a kind of oil pumping machine well head airtight and watertight padding for having polished rod repair ability according to claim 2, it is characterised in that:
Semi-refined paraffin wax is 46-58# industrial paraffin.
4. a kind of oil pumping machine well head airtight and watertight padding for having polished rod repair ability according to claim 1, it is characterised in that:
Dehumidizer is aluminium oxide；Curing agent is isocyanates；Plasticizer is ditridecyl phthalate；Foaming agent is polyurethane foams.
5. a kind of preparation method of the oil pumping machine well head airtight and watertight padding described in claim 1 for having polished rod repair ability, including
Following steps:
(1) in proportion by the rubber grain of corresponding formula ratio, chloroethylene copolymer resin, SAP resin, aluminium oxide, phthalic acid
Diester, epoxy resin particle, talcum meal component are heated up to 50-65 DEG C, are sent into blender continuously premixing stirring；
(2) it after waxy stone being heated to 80-90 DEG C of fusing, is added in running blender, is mixed with the raw material mixed and stirred in advance, after
It is continuous stirring to fully absorb mix；
(3) after the temperature of charge in detection blender is reduced to 45 DEG C or less, investment polyurethane foams continues to stir 20min,
Grease based on molybdenum disulfide lithium and base oil are added again, continue stirring to mixing；
(4) after mixed material is down to room temperature, part talcum powder is poured into again and mixes discharging, is sealed.
6. the preparation method of the oil pumping machine well head airtight and watertight padding according to claim 5 for having polished rod repair ability, special
Sign is: distinguishing 5-10% and 5% using the ratio of talcum powder in the step (1) and step (4).
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