CN111500082B - Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof - Google Patents
Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof Download PDFInfo
- Publication number
- CN111500082B CN111500082B CN202010353852.4A CN202010353852A CN111500082B CN 111500082 B CN111500082 B CN 111500082B CN 202010353852 A CN202010353852 A CN 202010353852A CN 111500082 B CN111500082 B CN 111500082B
- Authority
- CN
- China
- Prior art keywords
- special
- injection well
- water injection
- sealing filler
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- C08J9/04—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
-
- 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
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/12—Materials for stopping leaks, e.g. in radiators, in tanks
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
-
- 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
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/12—Polymers characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
-
- 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
- C08J2421/00—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
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
-
- 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
Abstract
The utility model relates to a synthetic sealing filler special for a water injection well test lubricator. The problem that the existing measures such as developing a packing sealing box chamber device are adopted to improve the sealing enhancement effect is poor is mainly solved. The special synthetic sealing filler for the water injection well test lubricator comprises the following components in percentage by mass: 15-20% of high-rubber powder; 3-5% of industrial paraffin; 10-15% of bentonite; 25-35% of SAP resin; 5-10% of chloroethylene copolymer resin; 1-2% of polyurethane foaming agent; 1.0 to 1.5 percent of curing agent; 1.5 to 50 percent of special diluent; 5-15% of talcum powder; the preparation process comprises the following steps: feeding high-rubber powder, industrial paraffin, bentonite and SAP resin into a stirrer for stirring; then putting the chloroethylene copolymer resin, the polyurethane foaming agent and the curing agent into a stirrer in sequence, and putting a special diluent until the materials are in a uniform cluster shape; adding talcum powder in batches and mixing evenly. The special synthetic sealing filler takes an aqueous medium as a supplementary power source to enhance the water-seeing self-expansion capability of the material so as to improve the sealing effect of the filler.
Description
Technical Field
The utility model relates to the technical field of oil field oil extraction engineering, in particular to a synthetic sealing filler special for a water injection well testing lubricator.
Background
In the well testing process, a blowout prevention pipe is required to be installed at the top of a well mouth of the well, an instrument is put into the well through a traction steel wire, and a packing type sealer is installed on the blowout prevention pipe and used for sealing the traction steel wire and preventing splashing and water leakage. However, due to the fact that underground pressure is too high, the problem of splashing and water leakage is very common in the moving process of the traction steel wire, the problem of serious ground environment pollution is caused, and a certain sealing effect can be maintained only by manually and continuously fastening the rubber packing of the existing packing type sealer at present.
Aiming at the problems, the following technical measures are adopted in the industry to solve the problems:
1. the blowout prevention pipe plug assembly disclosed in patent No. CN201720900422 comprises a blowout prevention pipe joint and a pipe plug, wherein the interior of the blowout prevention pipe joint is hollow and filled with lubricating oil, when a test instrument is lowered into a water injection well or lifted out of the water injection well, the outer layer of a test cable can be wrapped with lubricating oil, and through the lubricating effect of the lubricating oil, the friction between the test cable and a first sealing ring or a second sealing ring is reduced, and the service lives of the test cable and the sealing rings are prolonged.
2. CN203066926U oil field test blowout preventer discloses an oil field test blowout preventer, including the lubricator, the lubricator upper end is installed and is prevented spouting the end cap, and the lower part side-mounting of lubricator has emptying devices, the middle part position of lubricator be provided with the water catch bowl, the water catch bowl upper portion position of lubricator is equipped with the outlet, the water catch bowl downside is provided with the drain valve who connects the honeycomb duct. The utility model has the beneficial effects that: can collect the water conservancy diversion to the assigned position through the water catch bowl with the water that leaks, neither can cause the pollution of water injection well surrounding environment, also practiced thrift a large amount of water resources.
3. The siphon type blowout control pressure cap for the CN202788731 water injection well test is arranged in a plug of a blowout control pipe. The leakage of reinjection water in the water injection well is prevented, and the pollution of a well mouth and a well site is avoided. This prevent spouting pressure cap is equipped with the packing and goes up the pressure cap including pressing the cap body, pressing the cap body in, is equipped with the pressure chamber of unloading in the pressure cap body of packing below, and the drainage mouth communicates with the pressure chamber of unloading, circle connection shutoff jackscrew in the lower extreme of pressing the cap body, is equipped with the steel wire on its shutoff jackscrew and passes the hole. The drainage port is connected with a hose, and the reinjection water drained from the drainage device arranged at a high position is led to the sewage tank. The problem that reinjection water among the prior art leaks, can't be solved is solved. The method is simple and convenient, greatly facilitates construction, and solves all troubles caused by leakage of the reinjection water.
4. CN200968214Y prevents spouting plug relates to a prevent spouting plug, especially relates to a prevent spouting plug of the high pressure test of water injection well in oil field development field. The technical scheme is as follows: the device mainly comprises four parts, namely a screw plug, a setting core, a water seal ring and a filler pressing cap, wherein the setting core is arranged in the screw plug for screwing and sealing, a lower sealing filler, the water seal ring, an upper sealing filler and the filler pressing cap are sequentially added, and a plurality of working chambers and a concentric reducing communicating hole which can enable a test steel wire to penetrate through are formed inside the lower sealing filler, the water seal ring, the upper sealing filler and the filler pressing cap; the N end of the test steel wire is a movable end and penetrates through the packing pressing cap to be connected with a test instrument; the M end of the test steel wire is a fixed end and is fixed on the test winch drum. The beneficial effects are that: a plurality of throttling, pressure reducing and sealing cavities are arranged in the pipe plug and connected in series, so that high-pressure liquid fleed from the well is reduced in pressure step by step, and is collected in the collecting cavity and then drained to the sewage pool from the side through the liquid drainage hole.
In conclusion, measures such as development of packing sealing chamber devices and the like are adopted in the industry to improve the sealing effect, but the use effect is poor, and the conditions of water spraying and leakage in the testing process cannot be effectively solved.
Disclosure of Invention
The utility model aims to solve the problem that the prior art adopts measures such as developing a packing sealing chamber device to improve the sealing effect but has poor use effect. And provides a synthetic sealing filler special for a water injection well test lubricator. The synthetic sealing filler special for the water injection well test blowout prevention pipe adopts a self-expandable composite material to replace a rubber sealing material, and strengthens the water-meeting self-expansion capability of the material by taking an aqueous medium as a supplementary power source so as to improve the sealing effect of the filler. The utility model also provides a preparation method of the special synthetic sealing filler for the water injection well test lubricator.
The utility model can be achieved by the following technical scheme: the special synthetic sealing filler for the water injection well test lubricator comprises the following components in percentage by mass: 15-20% of high-rubber powder; 3-5% of industrial paraffin (crude wax powder); 10-15% of bentonite; 25-35% of SAP resin; 5-10% of chloroethylene copolymer resin; 1-2% of polyurethane foaming agent; 1.0 to 1.5 percent of curing agent; 1.5 to 50 percent of special diluent; 5-15% of talcum powder.
The high-rubber powder is 80-100 meshes; the curing agent is isocyanate.
The special diluent comprises the following components in percentage by mass: 3-10% of cyclohexanone, 2-5% of butyl acetate, 25-35% of anhydrous xylene and 50-65% of No. 200 solvent oil.
The utility model also provides a preparation method of the special synthetic sealing filler for the water injection well test lubricator, which comprises the following steps:
(1) heating high rubber powder, industrial paraffin powder, bentonite and SAP resin to 45-50 deg.C, and continuously premixing and stirring in a stirrer for 20 min;
(2) then putting the chloroethylene copolymer resin, the polyurethane foaming agent and the curing agent into a stirrer in sequence, gradually putting the special diluent, and continuously heating to 55-60 ℃ until the materials in the stirrer become uniform clusters;
(3) adding talcum powder in batches, mixing uniformly and stirring for 15-30min until the surfaces of the materials are not adhered, pouring the materials into an annular mold with a preset release agent, and basically solidifying and cutting the materials into sections after 24 hours.
Under the conventional condition, the pressure of an injection well is extremely high, and in the process of ascending and descending of a steel wire, the influence of the steel wire on the abrasion of rubber packing is extremely large, which is also a key factor that the leakage water spray is gradually intensified, and the abrasion can be only responded by a gland which frequently compresses a packing box. Therefore, the utility model adopts the self-expandable composite material to replace the rubber sealing material, and the water medium is used as a supplementary power source to enhance the water-meeting self-expansion capability of the material so as to improve the sealing effect of the filler.
The special synthetic sealing filler for the water injection well test lubricator has the characteristics that:
(1) when in use, the 1-2 sections of the filling section are directly arranged in a sealer of the test lubricator;
(2) after the sealing filler is relaxed and meets water, the sealing filler can absorb water and generate expansion capacity of 250-600%, so that the sealing state of the filler is recovered, and the filler can be dehydrated after being heated, so that the volume is automatically adjusted, and the abrasion is reduced.
(3) The test steel wire can directly pass through the shaft hole in the sealer without additional holes.
(5) The packing is suitable for being matched with a common rubber sealing section.
Compared with the background technology, the utility model has the following beneficial effects: the synthetic sealing filler special for the water injection well test lubricator is combined with a common rubber sealing ring for use, and the filler absorbs water in use to rapidly expand through water swelling, so that the purpose of blocking water by water is achieved, and the splashing condition existing in the uplink and downlink process of a steel wire can be avoided.
The synthetic sealing filler has the advantages of low cost and high reliability, can effectively solve the splash splashing phenomenon in the water well testing process, eliminates environmental pollution, and has wide application prospect in the oil field testing industry.
Drawings
FIG. 1 is a schematic structural diagram of a stuffing filling device in a stuffing box of a test lubricator according to an embodiment of the utility model.
In the figure: 1-steel wire; 2-pressing the cover; 3-stuffing box; 4-rubber sealing ring; 5-rubber composite filler; 6-steel wire hole.
The specific implementation mode is as follows:
the utility model will be further illustrated with reference to specific examples:
as shown in the attached drawing 1, the filling device for the lubricator stuffing box for the test comprises a test lubricator stuffing box 3, wherein high-hardness rubber sealing rings 4 and rubber composite fillers 5 are filled in the stuffing box 3 at intervals until the stuffing box is filled, a gland 2 is used for pressing the stuffing box, and a steel wire 1 is directly inserted into a steel wire hole 7 of the stuffing box to complete assembly.
Because the structural strength of the rubber composite material is poor, the rubber composite material cannot bear higher water injection pressure, cannot be used alone in a stuffing box of a test lubricator and needs to be matched with a high-hardness rubber packing for combined use. The rubber composite filler is combined with a common rubber sealing ring for use, and the filler absorbs water to rapidly expand in use through water swelling, so that the purpose of blocking water by water is achieved, and the splashing condition of water in the up-and-down process of the steel wire can be avoided.
Example 1:
(1) preparing a special diluent: putting 3kg of cyclohexanone, 3kg of butyl acetate, 25kg of anhydrous dimethylbenzene and 50kg of No. 200 solvent oil into a stirrer, and continuously stirring for 10min to obtain the product;
(2) heating 15kg of high-rubber powder, 3kg of industrial paraffin powder, 10kg of bentonite and 25kg of SAP resin to 45-50 ℃ according to a proportion, and feeding the mixture into a stirrer for continuous premixing and stirring for 20 min;
(3) then, sequentially putting 5kg of vinyl chloride copolymer resin, 1kg of polyurethane foaming agent and 1.0kg of curing agent isocyanate into a stirrer, gradually putting 1.5kg of special diluent, and continuously heating to 55-60 ℃ until the materials in the stirrer are in a uniform cluster shape;
(4) adding 5kg of talcum powder in batches, uniformly mixing and stirring for 15-30min until the surfaces of the materials are not adhered, pouring the materials into an annular mold with a preset release agent, and basically solidifying and cutting the materials into sections after 24 hours.
Example 2:
(1) preparing a special diluent: putting 10kg of cyclohexanone, 5kg of butyl acetate, 35kg of anhydrous dimethylbenzene and 65kg of No. 200 solvent oil into a stirrer, and continuously stirring for 10min to obtain the cyclohexanone-containing aqueous solution;
(2) heating 20 kg of high-rubber powder, 5kg of industrial paraffin powder, 15kg of bentonite and 35kg of SAP resin to 45-50 ℃ according to a proportion, and feeding the mixture into a stirrer for continuous premixing and stirring for 20 min;
(3) then, sequentially putting 10kg of vinyl chloride copolymer resin, 2kg of polyurethane foaming agent and 1.5kg of curing agent isocyanate into a stirrer, gradually adding 50kg of special diluent, and continuously heating to 55-60 ℃ until the materials in the stirrer are in a uniform cluster shape;
(4) adding 15kg of talcum powder in batches, uniformly mixing and stirring for 15-30min until the surfaces of the materials are not adhered, pouring the materials into an annular mold with a preset release agent, and basically solidifying and cutting the materials into sections after 24 hours.
As shown in FIG. 1, the synthetic rubber composite filler segments of the present invention prepared in examples 1 and 2 were used:
(1) according to the depth of the stuffing box of the blowout prevention pipe, the rubber composite stuffing 5 and the rubber sealing ring 4 are compacted at intervals and directly loaded into the stuffing box 3, and the gland 2 is loaded;
(2) after the rubber composite filler 5 is soaked in water, the rubber composite filler can absorb water and generate expansion capacity of 250-600 percent, so that the pressure of the filler box 3 is increased,
(3) the test steel wire 1 can directly penetrate through the stuffing box steel wire hole 6, and then the test steel wire is connected with a test instrument and is provided with a blowout prevention pipe.
The technical indexes of the special synthetic sealing filler for the water injection well test lubricator prepared in the embodiment 1-2 are as follows:
(1) packing density: 1.18-2.49;
(2) expansion capacity: 250-600% (depending on the amount absorbed);
(3) material state: 25 × 20mm ± 10% of the strip material.
The synthetic sealing filler special for the water injection well testing lubricator can effectively solve the splash splashing phenomenon in the water well testing process, eliminate the environmental pollution and have wide application prospect in the oil field testing industry. The technology is applied to the first oil-mine testing team of the four oil extraction plants in Daqing oil fields for more than 400 times, and a good application effect is achieved.
Claims (3)
1. The special synthetic sealing filler for the test lubricator of the water injection well is characterized in that: the components and the mixture ratio are as follows by mass percent: 15-20% of high-rubber powder; 3-5% of industrial paraffin; 10-15% of bentonite; 25-35% of SAP resin; 5-10% of chloroethylene copolymer resin; 1-2% of polyurethane foaming agent; 1.0 to 1.5 percent of curing agent; 1.5 to 50 percent of special diluent; 5-15% of talcum powder; the sum of the percentage contents of all the components is equal to 100 percent; the special diluent comprises the following components in percentage by mass: 3-10% of cyclohexanone, 2-5% of butyl acetate, 25-35% of anhydrous xylene and 50-65% of No. 200 solvent oil.
2. The synthetic sealing filler special for the water injection well testing lubricator according to claim 1, wherein the synthetic sealing filler is characterized in that: the high-rubber powder is 80-100 meshes; the curing agent is isocyanate.
3. The preparation method of the synthetic sealing filler special for the water injection well testing lubricator according to claim 1 is characterized by comprising the following steps of: the method comprises the following steps:
(1) heating high rubber powder, industrial paraffin powder, bentonite and SAP resin to 45-50 deg.C, and continuously premixing and stirring in a stirrer for 20 min;
(2) then putting the chloroethylene copolymer resin, the polyurethane foaming agent and the curing agent into a stirrer in sequence, gradually putting the special diluent, and continuously heating to 55-60 ℃ until the materials in the stirrer become uniform clusters;
(3) adding talcum powder in batches, mixing uniformly and stirring for 15-30min until the surfaces of the materials are not adhered, pouring the materials into an annular mold with a preset release agent, and basically solidifying and cutting the materials into sections after 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010353852.4A CN111500082B (en) | 2020-04-29 | 2020-04-29 | Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010353852.4A CN111500082B (en) | 2020-04-29 | 2020-04-29 | Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111500082A CN111500082A (en) | 2020-08-07 |
| CN111500082B true CN111500082B (en) | 2022-03-29 |
Family
ID=71866651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010353852.4A Active CN111500082B (en) | 2020-04-29 | 2020-04-29 | Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111500082B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083845A (en) * | 1993-10-07 | 1994-03-16 | 天津大学 | Reinforced sealing packing for pipe memory joining |
| US6016870A (en) * | 1998-06-11 | 2000-01-25 | Halliburton Energy Services, Inc. | Compositions and methods for consolidating unconsolidated subterranean zones |
| KR20110124121A (en) * | 2010-12-15 | 2011-11-16 | 주식회사 패턴크리트 | Paving method using overlay |
| CN203064685U (en) * | 2012-11-12 | 2013-07-17 | 北京中天金谷粮油工程技术有限公司 | Sealed screw conveyer dedicated to extractor |
| CN104633117A (en) * | 2014-12-31 | 2015-05-20 | 浙江国泰密封材料股份有限公司 | Preparation method for graphite filling modification PTFE fiber braided packing |
| CN105221747A (en) * | 2015-09-25 | 2016-01-06 | 宝钢不锈钢有限公司 | A kind of mechanical seal asbestos packing and preparation method thereof |
| CN108003622A (en) * | 2017-12-07 | 2018-05-08 | 齐齐哈尔市庆荣橡胶制品有限公司 | A kind of oil well dedicated elas-tic rubber packing and preparation method thereof |
| CN109608981A (en) * | 2018-11-19 | 2019-04-12 | 中国石油天然气集团有限公司 | A kind of water injection well resistance to 110 celsius temperature graphene modified epoxy resin mortar and preparation method |
| CN109942924A (en) * | 2019-03-11 | 2019-06-28 | 中国石油天然气股份有限公司 | A kind of oil pumping machine well head airtight and watertight padding having sustained release self-lubricating function |
| CN109971052A (en) * | 2019-03-11 | 2019-07-05 | 中国石油天然气股份有限公司 | The sealing filler special of oil pumping machine well head under a kind of situation applied to high water cut produced fluid |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109971053B (en) * | 2019-03-11 | 2021-06-15 | 中国石油天然气股份有限公司 | Pumping unit wellhead sealing filler with polished rod repairing capability |
-
2020
- 2020-04-29 CN CN202010353852.4A patent/CN111500082B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083845A (en) * | 1993-10-07 | 1994-03-16 | 天津大学 | Reinforced sealing packing for pipe memory joining |
| US6016870A (en) * | 1998-06-11 | 2000-01-25 | Halliburton Energy Services, Inc. | Compositions and methods for consolidating unconsolidated subterranean zones |
| KR20110124121A (en) * | 2010-12-15 | 2011-11-16 | 주식회사 패턴크리트 | Paving method using overlay |
| CN203064685U (en) * | 2012-11-12 | 2013-07-17 | 北京中天金谷粮油工程技术有限公司 | Sealed screw conveyer dedicated to extractor |
| CN104633117A (en) * | 2014-12-31 | 2015-05-20 | 浙江国泰密封材料股份有限公司 | Preparation method for graphite filling modification PTFE fiber braided packing |
| CN105221747A (en) * | 2015-09-25 | 2016-01-06 | 宝钢不锈钢有限公司 | A kind of mechanical seal asbestos packing and preparation method thereof |
| CN108003622A (en) * | 2017-12-07 | 2018-05-08 | 齐齐哈尔市庆荣橡胶制品有限公司 | A kind of oil well dedicated elas-tic rubber packing and preparation method thereof |
| CN109608981A (en) * | 2018-11-19 | 2019-04-12 | 中国石油天然气集团有限公司 | A kind of water injection well resistance to 110 celsius temperature graphene modified epoxy resin mortar and preparation method |
| CN109942924A (en) * | 2019-03-11 | 2019-06-28 | 中国石油天然气股份有限公司 | A kind of oil pumping machine well head airtight and watertight padding having sustained release self-lubricating function |
| CN109971052A (en) * | 2019-03-11 | 2019-07-05 | 中国石油天然气股份有限公司 | The sealing filler special of oil pumping machine well head under a kind of situation applied to high water cut produced fluid |
Non-Patent Citations (2)
| Title |
|---|
| 石墨填充改性PTFE纤维编织盘根的研制;王仕江 等;《液压气动与密封》;20121231;第32卷(第10期);第82-83页 * |
| 聚四氟乙烯盘根的研制及应用;李书文;《中氮肥》;19951231(第6期);第29-31页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111500082A (en) | 2020-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202580323U (en) | Two-side flexible waterproof sleeve pipe | |
| CN210395361U (en) | Pile-first method straight pile jacket type jacket underwater grouting construction system | |
| CN111500082B (en) | Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof | |
| CN102337859B (en) | Coal field drill hole leak blocking system | |
| CN114135249A (en) | Reusable and automatic pressure supplementing gas extraction drilling and sealing system and working method thereof | |
| CN210858602U (en) | Novel pressure-bearing sleeve for water detecting and draining orifice | |
| CN212225159U (en) | Horizontal MJS construction method pile orifice blowout-stopping sealing device | |
| CN204530669U (en) | Self-sealing packer | |
| CN215258170U (en) | Water stop ring with rubber ring air bag | |
| CN2837493Y (en) | Well cementing casing device capable of quick setting of cement slurry | |
| CN214741211U (en) | Leak stopping tool for drilling | |
| CN212359711U (en) | Pipe diameter taper sealing water stop valve | |
| CN115030230A (en) | Pile-first type slurry filling sealing packer and sealing method | |
| CN113152466A (en) | Large-depth full-section type high polymer anti-seepage curtain grouting device and method | |
| CN201126063Y (en) | Flexible water string | |
| CN220768140U (en) | High pressure drop well plugging device | |
| CN208870567U (en) | Blowout hookup is sealed between well head oil skill casing | |
| CN203927102U (en) | Polyester concrete Pressure pipe and assembly thereof | |
| CN210623554U (en) | Polypropylene flash distillation cauldron shaft seal device | |
| CN206928311U (en) | A kind of bottom plate water draw-off | |
| CN215564690U (en) | Device for seepage-proofing and leakage-stopping of covering layer | |
| CN216479346U (en) | Water stop ring with integrated hinge rubber ring | |
| CN217896571U (en) | Water delivery pressure pipeline exhaust valve well | |
| CN205806506U (en) | A kind of lift hydrant | |
| CN216381321U (en) | Reusable and automatic pressure supplementing gas extraction drilling and sealing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |