CN110029959B - Customized sealing filler applied to wellhead of oil pumping unit under polished rod eccentric condition - Google Patents
Customized sealing filler applied to wellhead of oil pumping unit under polished rod eccentric condition Download PDFInfo
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- CN110029959B CN110029959B CN201910178638.7A CN201910178638A CN110029959B CN 110029959 B CN110029959 B CN 110029959B CN 201910178638 A CN201910178638 A CN 201910178638A CN 110029959 B CN110029959 B CN 110029959B
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- polished rod
- wellhead
- pumping unit
- eccentric
- filler
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- 239000000945 filler Substances 0.000 title claims abstract description 46
- 238000007789 sealing Methods 0.000 title claims abstract description 35
- 238000005086 pumping Methods 0.000 title claims abstract description 18
- 238000012856 packing Methods 0.000 claims abstract description 35
- 239000003822 epoxy resin Substances 0.000 claims abstract description 16
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 16
- 239000000440 bentonite Substances 0.000 claims abstract description 15
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 15
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical group ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920006026 co-polymeric resin Polymers 0.000 claims abstract description 12
- 229920001971 elastomer Polymers 0.000 claims abstract description 12
- 239000004088 foaming agent Substances 0.000 claims abstract description 11
- 239000002199 base oil Substances 0.000 claims abstract description 10
- 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 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 239000004519 grease Substances 0.000 claims abstract description 8
- 230000001050 lubricating effect Effects 0.000 claims abstract description 8
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000012188 paraffin wax Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 12
- 239000001993 wax Substances 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000004814 polyurethane Substances 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 4
- 239000002480 mineral oil Substances 0.000 claims description 4
- 235000010446 mineral oil Nutrition 0.000 claims description 4
- 239000001294 propane Substances 0.000 claims description 4
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 3
- 239000004584 polyacrylic acid Substances 0.000 claims description 3
- XKZQKPRCPNGNFR-UHFFFAOYSA-N 2-(3-hydroxyphenyl)phenol Chemical compound OC1=CC=CC(C=2C(=CC=CC=2)O)=C1 XKZQKPRCPNGNFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 15
- 238000012360 testing method Methods 0.000 description 4
- 229930185605 Bisphenol Natural products 0.000 description 2
- QWVMUSBBWGTKML-UHFFFAOYSA-N [Li].[Mo](=S)=S Chemical compound [Li].[Mo](=S)=S QWVMUSBBWGTKML-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000010920 waste tyre 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention relates to a customized sealing filler applied to a wellhead of an oil pumping unit under the condition of polished rod eccentricity. The customized sealing filler body applied to the wellhead of the oil pumping unit under the eccentric condition of the polished rod mainly solves the problems of uneven packing density condition caused by the eccentricity of the polished rod and the non-sealing of the eccentric polished rod caused by the eccentric wear of the packing, and comprises the following components in percentage by mass: 35-60% of rubber particles; 2-5% of epoxy resin; 5-20% of crude wax; 5-15% of bentonite; 5-15% of SAP resin; 5-10% of chloroethylene copolymer resin; 1-2% of foaming agent; 0.2 to 1.0 percent of curing agent; 5-15% of talcum powder; 5-10% of molybdenum disulfide lubricating grease; 3-5% of base oil. This sealing filler is scattered granular mixture before the use, in the well head packing box that has the eccentric problem of direct addition, along with pressurization and the intensification thermochemical reaction adjustment to the filler, has formed a complete packing and has filled wholly, becomes the special packing filler massive body of a well customization to solve the sealing problem of eccentric polished rod.
Description
Technical Field
The invention relates to the technical field of oil extraction engineering of oil fields, in particular to a customized sealing filler applied to a wellhead of an oil pumping unit under the condition of polished rod eccentricity.
Background
In recent years, due to the deterioration of the mechanical production condition of the oil field, the wellhead and the polished rod are not centered or are extremely eccentric due to various factors. The packing unbalance caused by the eccentricity of the polished rod can not be compensated in the process of adding the conventional packing into the packing box, the eccentric of the polished rod can cause the eccentric wear of the packing, the pressure balance between the packing and the polished rod is damaged, the medium leakage is caused, meanwhile, the polished rod is seriously damaged, and the vicious circle is formed. For the above problems, the current mainstream solution direction in the industry is mostly focused on the research and development of a wellhead deviation adjusting device, the medium leakage problem is solved by adjusting the eccentric phenomenon of a polished rod, but the solution period is long and the cost is extremely high.
Disclosure of Invention
The invention provides a customized sealing filler body applied to a wellhead of an oil pumping unit under the eccentric condition of a polished rod, aiming at overcoming the problems of uneven filler density caused by the eccentric of the polished rod and unsealed eccentric polished rod caused by eccentric wear of the filler in the background technology. The matched packing box customized sealing packing body applied to the eccentric condition of the polished rod is directly added into a wellhead packing box with the eccentric problem by scattered granular mixtures, and the granular packing forms a complete and matched asymmetric packing whole along with the pressurization and temperature rise thermochemical reaction adjustment of the packing, so that the sealing problem of the eccentric polished rod is solved.
The invention can solve the problems by the following technical scheme: the customized sealing filler applied to the wellhead of the oil pumping unit under the polished rod eccentric condition comprises the following components in percentage by mass: 35-60% of rubber particles; 2-5% of epoxy resin; 5-20% of crude wax; 5-15% of bentonite; 5-15% of SAP resin; 5-10% of chloroethylene copolymer resin; 1-2% of polyurethane foaming agent; 0.2 to 1.0 percent of curing agent; 5-15% of talcum powder; 5-10% of molybdenum disulfide lithium-based lubricating grease; 3-5% of base oil.
The customized sealing filler applied to the wellhead of the oil pumping unit under the polished rod eccentric condition has the following functions:
the rubber particles are obtained by mechanically crushing rubber raw materials with higher purity, such as waste tire side walls, waste inner tubes and the like for multiple times, the granularity is 1-10mm, and the impurity content is not more than 30%.
The epoxy resin is diphenol propane epoxy resin.
The crude wax is one of a high-oil-content primary paraffin product or semi-refined paraffin of any model.
The bentonite is organic bentonite which is subjected to impurity removal and surface modification treatment, and the content of montmorillonite is not less than 85%.
The SAP resin is polyacrylic acid series super absorbent resin.
The chloroethylene copolymer resin is an epoxy resin colloid tackifier.
The foaming agent is a polyurethane foaming agent.
The curing agent is isocyanate.
The talcum powder is common talcum powder ground by a dry method and a wet method.
The lithium molybdenum disulfide-based lubricating grease is prepared by adding additives such as molybdenum disulfide and the like into hydroxy fatty acid lithium soap thickened mineral oil.
The base oil is paraffin-based mineral oil.
The invention also provides a preparation method of the customized sealing filler applied to the wellhead of the oil pumping unit under the polished rod eccentric condition, which comprises the following steps:
(1) heating rubber particle glue, bentonite, SAP resin, vinyl chloride copolymer resin, polyurethane foaming agent and epoxy resin according to the corresponding formula amount to 45-50 ℃, and feeding into a stirrer for continuous premixing and stirring;
(2) heating the crude wax to 80-90 ℃ to melt, adding the molten crude wax into a running stirrer, mixing the molten crude wax with the pre-stirred raw materials, and continuously stirring until the raw materials are completely absorbed and uniformly mixed;
(3) detecting that the temperature of the materials in the stirrer is reduced to below 45 ℃, adding molybdenum disulfide lubricating grease and base oil, and continuously stirring until the materials are uniformly mixed;
(4) cooling the mixed material to normal temperature, pouring talcum powder, mixing uniformly, discharging, sealing and storing.
The invention is applied to the customized sealing filler of the oil pumping unit well mouth under the eccentric condition of the polished rod, the scattered granular mixture is directly added into a well mouth packing box with the eccentric problem before use, and a complete packing filler whole is formed along with the pressurization and temperature rise thermochemical reaction adjustment of the filler, so that the customized sealing filler block becomes a special packing filler block for one well, thereby solving the sealing problem of the eccentric polished rod.
Compared with the background technology, the invention has the following beneficial effects: the customized sealing filler applied to the wellhead of the oil pumping unit under the condition of the eccentric polished rod is characterized by scattered particle materials before use, can be directly added into a wellhead packing box with any specification, the filler is pressurized and adjusted according to the conventional procedure, the filler generates heat under the initial high pressure due to the friction with a polished rod, so that paraffin in the filler in a heat affected zone is melted and thermally conducted, bisphenol propane type epoxy resin, vinyl chloride copolymer resin and a polyurethane foaming agent begin to soften and adhere after being heated, rubber particles and bentonite in the filler are pushed to creep, simultaneously a small amount of paraffin is separated out and is brought out of the stuffing box by the polish rod, the pressure in the stuffing box is gradually reduced, the paraffin begins to solidify when the corresponding stuffing temperature is reduced, the secondary forming adjustment of the packing is completed, an irregular eccentric packing body is formed in the eccentric (not concentric with the polish rod) packing box, namely the scattered granular packing is changed into seamless non-standard integral packing. The problem of uniform allocation of the filler under the eccentric condition is solved, the eccentric wear of the polished rod is avoided, and the service life of the polished rod and the filler of the eccentric wellhead is prolonged.
The specific implementation mode is as follows:
the invention will be further illustrated with reference to specific examples:
example 1:
(1) heating 35kg of high-rubber particles, 5kg of bentonite, 5kg of SAP resin, 5kg of vinyl chloride copolymer resin, 1kg of polyurethane foaming agent and 2kg of epoxy resin according to the corresponding formula amount to 45-50 ℃, and feeding the mixture into a stirrer for continuous premixing and stirring;
(2) heating 5kg of 46-62# semi-refined paraffin to 80-90 ℃ for melting, adding into a running stirrer, mixing with the pre-stirred raw materials, and continuously stirring until the raw materials are completely absorbed and uniformly mixed;
(3) detecting that the temperature of the materials in the stirrer is reduced to below 45 ℃, adding 5kg of curing agent isocyanate, 5kg of molybdenum disulfide lubricating grease and 3kg of base oil, and continuously stirring until the materials are uniformly mixed;
(4) and cooling the mixed materials to normal temperature, pouring 10kg of talcum powder, mixing uniformly, discharging, and sealing for storage.
Example 2:
(1) 60kg of high rubber particles with the particle size of 1-10mm, 15kg of bentonite, 15kg of SAP resin, 10kg of vinyl chloride copolymer resin, 2kg of polyurethane foaming agent and 5kg of epoxy resin particles are heated to 45-50 ℃ according to the corresponding formula amount and sent into a stirrer for continuous premixing and stirring;
(2) heating 20kg of 46-62# semi-refined paraffin to 80-90 ℃ for melting, adding into a running stirrer, mixing with the pre-stirred raw materials, and continuously stirring until the raw materials are completely absorbed and uniformly mixed;
(3) detecting that the temperature of the materials in the stirrer is reduced to below 45 ℃, adding 10kg of curing agent isocyanate, 10kg of molybdenum disulfide lubricating grease and 5kg of base oil, and continuously stirring until the materials are uniformly mixed;
(4) and cooling the mixed materials to normal temperature, pouring 5kg of talcum powder, mixing uniformly, discharging, and sealing for storage.
In example 1-2, the bentonite is organic bentonite which is subjected to impurity removal and surface modification treatment, and the content of montmorillonite is not less than 85%; the SAP resin is polyacrylic acid series super absorbent resin; the chloroethylene copolymer resin is an epoxy resin colloid tackifier; the base oil is paraffin-based mineral oil.
The customized sealing filler prepared in the embodiment 1-2 and applied to the wellhead of the pumping unit under the eccentric condition of the polish rod is characterized in that the prepared customized sealing filler is made of scattered particle materials before use, the customized sealing filler can be directly added into any wellhead packing box, the filler is pressurized and adjusted according to a conventional procedure, the filler generates heat due to friction with the polish rod at the initial high pressure, paraffin in the filler in a heat affected area is melted and conducted, bisphenol-based propane epoxy resin, vinyl chloride copolymer resin and polyurethane foaming agent are heated to begin to soften and adhere, rubber particles and bentonite in the filler are pushed to creep, meanwhile, a small amount of paraffin is separated out and is taken out of the packing box by the polish rod, the pressure in the packing box is gradually reduced, the paraffin begins to solidify when the temperature of the corresponding filler is reduced, the secondary molding adjustment of the filler is completed, and an irregular eccentric filler body is formed in the eccentric packing box (which is not concentric with the polish rod), namely, the scattered granular packing is changed into seamless non-standard integral packing. Therefore, the uniform configuration of the filler under the eccentric condition is realized, and the problem of eccentric wear of the polish rod is solved.
The customized sealing filler selects more than 30 serious eccentric wells for testing in Daqing oil fields, and has extremely high deviation rectifying operation cost if being carried out according to a conventional mode. The eccentric degree of the polished rod of the test well reaches 93 percent at most, the minimum eccentric degree of the polished rod of the test well reaches 64 percent, conventional fillers cannot be smoothly added into a packing box at all, and even if the conventional fillers are added forcibly, eccentric wear and medium leakage of the polished rod can be caused. The customized sealing filler applied to the wellhead of the oil pumping unit under the condition of the eccentricity of the polished rod can not be limited by the eccentricity degree of the polished rod, and continuous tracking tests for 1 year prove that the filler has good sealing performance, no obvious leakage condition is found, and the effective sealing period is 2-3 times longer than that of the conventional sealing filler. The service life of the polished rod and the filler of the eccentric wellhead is greatly prolonged, and the equipment operation cost is greatly saved.
Claims (5)
1. The utility model provides a be applied to customization sealing filler of beam-pumping unit well head under polished rod eccentric situation which characterized in that: the components and the mixture ratio are as follows by mass percent: 35-60% of rubber particles; 2-5% of epoxy resin; 5-20% of crude wax; 5-15% of bentonite; 5-15% of SAP resin; 5-10% of chloroethylene copolymer resin; 1-2% of polyurethane foaming agent; 0.2 to 1.0 percent of curing agent; 5-15% of talcum powder; 5-10% of molybdenum disulfide lubricating grease; 3-5% of base oil.
2. The customized sealing packing applied to the wellhead of the pumping unit under the polished rod eccentric condition according to claim 1, is characterized in that: the granularity of the rubber particles is 1-10mm, and the content of impurities is not more than 30%; the epoxy resin is diphenol propane epoxy resin; the crude wax is one of a high-oil-content primary paraffin product or semi-refined paraffin of any model; the bentonite is organic bentonite which is subjected to impurity removal and surface modification treatment, and the content of montmorillonite is not less than 85%; the SAP resin is polyacrylic acid series super absorbent resin; the chloroethylene copolymer resin is an epoxy resin colloid tackifier; the base oil is paraffin-based mineral oil.
3. The customized sealing packing applied to the wellhead of the pumping unit under the polished rod eccentric condition according to claim 2, is characterized in that: the semi-refined paraffin is 46-62# semi-refined paraffin or 52# 62# semi-refined paraffin.
4. The customized sealing packing applied to the wellhead of the pumping unit under the polished rod eccentric condition according to claim 1, is characterized in that: the curing agent is isocyanate.
5. The method for preparing the customized sealing filler applied to the wellhead of the pumping unit under the polished rod eccentric condition in claim 1 is characterized in that: the method comprises the following steps:
(1) heating rubber particle glue, bentonite, SAP resin, vinyl chloride copolymer resin, foaming agent and epoxy resin according to the corresponding formula amount to 45-50 ℃, and feeding into a stirrer for continuous premixing and stirring;
(2) heating the crude wax to 80-90 ℃ to melt, adding the molten crude wax into a running stirrer, mixing the molten crude wax with the pre-stirred raw materials, and continuously stirring until the raw materials are completely absorbed and uniformly mixed;
(3) detecting that the temperature of the materials in the stirrer is reduced to below 45 ℃, adding a curing agent, molybdenum disulfide lubricating grease and base oil, and continuously stirring until the materials are uniformly mixed;
(4) cooling the mixed material to normal temperature, pouring talcum powder, mixing uniformly, discharging, sealing and storing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910178638.7A CN110029959B (en) | 2019-03-11 | 2019-03-11 | Customized sealing filler applied to wellhead of oil pumping unit under polished rod eccentric condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910178638.7A CN110029959B (en) | 2019-03-11 | 2019-03-11 | Customized sealing filler applied to wellhead of oil pumping unit under polished rod eccentric condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110029959A CN110029959A (en) | 2019-07-19 |
| CN110029959B true CN110029959B (en) | 2021-10-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910178638.7A Active CN110029959B (en) | 2019-03-11 | 2019-03-11 | Customized sealing filler applied to wellhead of oil pumping unit under polished rod eccentric condition |
Country Status (1)
| Country | Link |
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| CN (1) | CN110029959B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246128A (en) * | 2016-07-28 | 2016-12-21 | 尹国庆 | Pumping unit well mouth polish rod seals pouring-in filler |
| CN107345072A (en) * | 2016-05-06 | 2017-11-14 | 抚顺市红连石化密封材料有限公司 | A kind of flexible solid rotary seal filler and preparation method thereof |
| CN107345011A (en) * | 2017-08-09 | 2017-11-14 | 盐城市宝光车用材料有限公司 | A kind of high-foaming expansion glue |
| CN107523234A (en) * | 2017-08-09 | 2017-12-29 | 盐城市宝光车用材料有限公司 | A kind of expansion type spot welding glue |
| CN107868375A (en) * | 2017-11-13 | 2018-04-03 | 常州蓝旗亚纺织品有限公司 | A kind of bentonite base composite water-stop bar |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170088696A1 (en) * | 2015-09-29 | 2017-03-30 | Baker Hughes Incorporated | Rubber reinforced with fillers dispersed in functionalized silsesquioxanes |
-
2019
- 2019-03-11 CN CN201910178638.7A patent/CN110029959B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345072A (en) * | 2016-05-06 | 2017-11-14 | 抚顺市红连石化密封材料有限公司 | A kind of flexible solid rotary seal filler and preparation method thereof |
| CN106246128A (en) * | 2016-07-28 | 2016-12-21 | 尹国庆 | Pumping unit well mouth polish rod seals pouring-in filler |
| CN107345011A (en) * | 2017-08-09 | 2017-11-14 | 盐城市宝光车用材料有限公司 | A kind of high-foaming expansion glue |
| CN107523234A (en) * | 2017-08-09 | 2017-12-29 | 盐城市宝光车用材料有限公司 | A kind of expansion type spot welding glue |
| CN107868375A (en) * | 2017-11-13 | 2018-04-03 | 常州蓝旗亚纺织品有限公司 | A kind of bentonite base composite water-stop bar |
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| Publication number | Publication date |
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| CN110029959A (en) | 2019-07-19 |
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