CN109971052A - The sealing filler special of oil pumping machine well head under a kind of situation applied to high water cut produced fluid - Google Patents

The sealing filler special of oil pumping machine well head under a kind of situation applied to high water cut produced fluid Download PDF

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Publication number
CN109971052A
CN109971052A CN201910178722.9A CN201910178722A CN109971052A CN 109971052 A CN109971052 A CN 109971052A CN 201910178722 A CN201910178722 A CN 201910178722A CN 109971052 A CN109971052 A CN 109971052A
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CN
China
Prior art keywords
high water
well head
oil pumping
water cut
pumping machine
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.)
Granted
Application number
CN201910178722.9A
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Chinese (zh)
Other versions
CN109971052B (en
Inventor
汤凯
王洪亮
张文宇
申勇辉
李志波
杨海波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daqing Oilfield Co Ltd
China Petroleum and Natural Gas Co Ltd
Original Assignee
Daqing Oilfield Co Ltd
China Petroleum and Natural Gas Co Ltd
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Publication date
Application filed by Daqing Oilfield Co Ltd, China Petroleum and Natural Gas Co Ltd filed Critical Daqing Oilfield Co Ltd
Priority to CN201910178722.9A priority Critical patent/CN109971052B/en
Publication of CN109971052A publication Critical patent/CN109971052A/en
Application granted granted Critical
Publication of CN109971052B publication Critical patent/CN109971052B/en
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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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L17/00—Compositions of reclaimed rubber
    • 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
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • 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
    • 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
    • C08J2317/00—Characterised by the use of reclaimed rubber
    • 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
    • C08J2433/02—Homopolymers or copolymers of acids; Metal or ammonium salts 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/20—Recycled plastic
    • C08L2207/24—Recycled plastic recycling of old tyres and caoutchouc and addition of caoutchouc particles
    • 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
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2003/1034—Materials or components characterised by specific properties
    • C09K2003/1046—Water-absorbing materials

Abstract

The present invention relates to a kind of sealing filler specials of oil pumping machine well head under situation applied to high water cut produced fluid.Mainly solve the problems, such as oil pumping machine well head packing box poor sealing effect and serious leak under existing high water cut produced fluid situation.This is applied to the sealing filler special of oil pumping machine well head under high water cut produced fluid situation, and component and proportion are as follows by mass percentage: rubber grain 15-45%；Epoxy resin 2-5%；Waxy stone 5-15%；Bentonite 5-15%；SAP resin 5-15%；Chloroethylene copolymer resin 5-10%；Polyurethane foams 1-2%；Curing agent 0.2-1.0%；Talcum powder 5-15%.This is applied to the sealing filler special of oil pumping machine well head under high water cut produced fluid situation, the moisture of Produced Liquid leakage can be absorbed, the part of filler abrasion is continuously replenished or utilizes water to the generation of sluggish dielectric leakage, realize the abrasion of substitution filler and extends the purpose in packing service life.

Description

The sealing filler special of oil pumping machine well head under a kind of situation applied to high water cut produced fluid
Technical field
The present invention relates to oil extraction in oil field field of engineering technology, more particularly to one kind to be applied to take out under high water cut produced fluid situation The sealing filler special of oil machine well head.
Background technique
In oil field produced system, oil pumping well head packing_seal filler mostly uses the whole rubber or derivatives thereof to be Material, oil field middle and later periods water flooding recovery, three adopt the aggravation of process so that the aqueous rising oil-containing decline of Produced Liquid, Yi Jiduo in recent years The influence of kind of factor, the packing seal effect in wellhead packing box are deteriorated, and dielectric leakage problem is outstanding day by day, many rod-pumped wells One ground water of summer, winter, environmental protection pressure was very big at iceberg.In response to the above problems, mainstream current in industry solves direction Duo Ji In improved in the structure of packing box, but under the not big change of the performance of filler, resultant performance enhancements are limited.
Summary of the invention
The invention reside in overcome oil pumping machine well head packing box under high water cut produced fluid situation present in background technique to seal The problem of effect difference and serious leak.And it provides a kind of dedicated applied to oil pumping machine well head packing box under high water cut produced fluid situation Airtight and watertight padding.This is applied to the sealing filler special of oil pumping machine well head under high water cut produced fluid situation, to the material of packing padding It improves, the characteristics of using Produced Liquid High water cut, a large amount of water-absorbent materials is added in packing padding, leakage can be absorbed , the generation of sluggish dielectric leakage the part of filler abrasion is continuously replenished or is utilized water to water therein, is realized substantially Degree extends the packing padding service life.
The present invention can reach by following technical solution: should be applied to oil pumping machine well head under high water cut produced fluid situation Sealing filler special, component and proportion are as follows by mass percentage: rubber grain 15-45%；Epoxy resin 2-5%；Slightly Wax 5-15%；Bentonite 5-15%；SAP resin 5-15%；Chloroethylene copolymer resin 5-10%；Polyurethane foams 1-2%；Solidification Agent 0.2-1.0%；Talcum powder 5-15%.
The effect for being applied to the sealing filler special each component of oil pumping machine well head under high water cut produced fluid situation is as follows:
The rubber grain is using higher rubber raw materials of purity such as waste tire side wall, the useless inner tubes of a tyre through multiple Mechanical Crushing mode It obtains, granularity differs for 1-10mm, and impurity < 30%.
The epoxy resin is liquid propane type epoxy resin of di phenolic group.
The waxy stone be primary paraffin wax product or semi-refined paraffin wax any one.
The bentonite is the organobentonite for removing impurity and surface-modified processing, and smectite content is no less than 85%。
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 is the common talcum powder of wet-dry change attrition process.
The present invention also provides the sealing filler specials of oil pumping machine well head under a kind of situation applied to high water cut produced fluid Preparation method, comprising the following steps:
(1) rubber grain of corresponding formula ratio, bentonite, SAP resin component will be heated up to 45-50 in proportion in A blender DEG C, continuously premixing stirring is sent into blender；
(2) waxy stone additional heat is added in A blender, mix with the raw material mixed and stirred in advance to after 80-90 DEG C, continue to stir extremely Mixing is fully absorbed, while continued down is to 40-50 DEG C；
(3) chloroethylene copolymer resin, polyurethane foams, epoxy resin particle, curing agent are heated up to 45- in B blender 50 DEG C, 15-30min is stirred, talcum powder mixing is poured into and moves back to continuing in A blender to stir 30-60min；
(4) mixed material pours into the long groove shape mold of preset release agent, and solidification can be used substantially after 24 hours.
The present invention improves the material of packing padding, the ability for making it have self-expanding, is used to replace packing box people The characteristics of work blower operations are exactly exactly using Produced Liquid High water cut, is added a large amount of SAP water-absorbing resins in packing padding Material the part of filler abrasion is continuously replenished or utilizes water to sluggish Jie with water therein for absorbing the moisture of leakage The generation of matter leakage realizes the abrasion of substitution filler and extends the purpose in packing service life.
The present invention can have the following beneficial effects: that this is applied to high water cut produced fluid situation compared with above-mentioned background technique The sealing filler special of lower oil pumping machine well head can mix individually or with other fillers and make using preceding characterized by streak material With.Direct wound form is added in any specification packing box when addition, carries out first pressurization adjustment to filler according to conventional program.When After a period of use, the gap of polished rod and filler increases filler, and the moisture in Produced Liquid starts to leak, encounter bentonite and Affine water suction phenomenon occurs after SAP resin, pushes filler that self-expanding integrally occurs, so that the gap of polished rod and filler is reduced, Produced Liquid leakage weakens or terminates.The friction of the bentonite SAP resin structure expander and polished rod of subsequent rich water starts to occur, and produces Raw heat takes packing box out of by part water evaporation and by polished rod, and volume becomes smaller after expander dehydration, in the medium then leaked In water persistently supplement under, expander becomes larger again continues to lesser polished rod and filler space.
Specific embodiment:
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1:
(1) 15 kg of rubber grain, 5 kg, SAP resin of bentonite, 5 kg will be heated up to 45-50 DEG C in proportion in A blender, Continuously premixing stirring is sent into blender；
(2) 46-58# industrial paraffin 5kg additional heat is added in A blender to after 80-90 DEG C, it is mixed with the raw material that mixes and stirs in advance It closes, continues stirring and mix to fully absorbing, while continued down is to 40-50 DEG C；
(3) in B blender that 5 kg of chloroethylene copolymer resin, 1 kg of polyurethane foams, epoxy resin 2kg, curing agent is different Cyanate 0.5kg is heated up to 45-50 DEG C, stirs 15-30min, pours into talcum powder 5kg mixing and moves back to continuing to stir in A blender Mix 30-60min；
(4) said mixture material pours into the long groove shape mold of preset release agent, and solidification can be taken off making substantially after 24 hours With.
Embodiment 2:
(1) rubber grain 45kg, bentonite 15kg, SAP resin 15kg will be heated up to 45-50 DEG C in proportion in A blender, Continuously premixing stirring is sent into blender；
(2) 15 kg additional heat of 46-58# industrial paraffin is added in A blender, to after 80-90 DEG C with the raw material mixed and stirred in advance Mixing continues stirring and mixes to fully absorbing, while continued down is to 40-50 DEG C；
(3) in B blender that chloroethylene copolymer resin 10kg, 2 kg of polyurethane foams, epoxy resin 5kg, curing agent is different Cyanate 1kg is heated up to 45-50 DEG C, stirs 15-30min, pours into talcum powder 10kg mixing and moves back to continuing to stir in A blender 30-60min；
(4) mixed material pours into the long groove shape mold of preset release agent, and solidification can be used substantially after 24 hours.
The sealing filler special for being applied to oil pumping machine well head under high water cut produced fluid situation of embodiment 1-2 preparation, uses It is preceding characterized by streak material, can be used in mixed way individually or with other fillers.Any specification is added in direct wound form when addition In packing box, first pressurization adjustment is carried out to filler according to conventional program.When filler after a period of use, polished rod and filler Gap increases, and the moisture in Produced Liquid starts to leak, and affine water suction phenomenon occurs after encountering bentonite and SAP resin, promotion is filled out Material is whole to occur self-expanding, to reduce the gap of polished rod and filler, Produced Liquid leakage weakens or terminates.Then rich water is swollen The friction of profit soil SAP resin structure expander and polished rod starts to occur, and the heat of generation is taken part water evaporation and by polished rod Packing box, volume becomes smaller after expander dehydration, and in the case where the water in the medium then leaked persistently supplements, expander becomes larger continuation again Maintain lesser polished rod and filler space.In this cyclic process, main loss substance is water, is thus significantly extended The service life of packing padding, and sealing effect is splendid, has also achieved energy-efficient effect.
In face of the rod-pumped well of high water cut produced fluid, " water suction-can targetedly be taken using the synthetic filling of the present invention The process of expansion-water blockoff-friction evaporation-water suction-expansion ", realizes the self-adjusting of sealing state, reaches with the effect of water blocking water Fruit extends filler service life to reduce filler abrasion to greatest extent.
Sealing filler special of the present invention applied to oil pumping machine well head under high water cut produced fluid situation, in Daqing oil field Certain three exploiting field block High water cut rod-pumped well does the bulge test of more than 200 wells time, this filler blocks the leakage of aqueous medium, packing substantially The average replacement cycle extends to 91 days or more by 23 days before testing, and eliminates one ground water of well site summer, winter at iceberg feelings Condition solves the difficult problem of environmental protection, and has good economic benefit.

Claims (4)

1. the sealing filler special of oil pumping machine well head under a kind of situation applied to high water cut produced fluid, it is characterised in that: its component And proportion is as follows by mass percentage: rubber grain 15-45%；Epoxy resin 2-5%；Waxy stone 5-15%；Bentonite 5- 15%；SAP resin 5-15%；Chloroethylene copolymer resin 5-10%；Polyurethane foams 1-2%；Curing agent 0.2-1.0%；Talcum Powder 5-15%.
2. the Special seal of oil pumping machine well head is filled out under a kind of situation applied to high water cut produced fluid according to claim 1 Material, it is characterised in that: waxy stone is 46-58# industrial paraffin；Curing agent is isocyanates.
3. the Special seal of oil pumping machine well head is filled out under a kind of situation applied to high water cut produced fluid according to claim 1 Material, 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%.
4. a kind of system described in claim 1 applied to the sealing filler special of oil pumping machine well head under high water cut produced fluid situation Preparation Method, it is characterised in that: the following steps are included:
(1) rubber grain of corresponding formula ratio, bentonite, SAP resin component will be heated up to 45- in proportion in A blender 50 DEG C, continuously premixing stirring is sent into blender；
(2) waxy stone additional heat is added in A blender, mix with the raw material mixed and stirred in advance to after 80-90 DEG C, continue to stir extremely Mixing is fully absorbed, while continued down is to 40-50 DEG C；
(3) chloroethylene copolymer resin, polyurethane foams, epoxy resin particle, curing agent are heated up to 45- in B blender 50 DEG C, 15-30min is stirred, talcum powder mixing is poured into and moves back to continuing in A blender to stir 30-60min；
(4) mixed material pours into the long groove shape mold of preset release agent, and solidification can be used substantially after 24 hours.
CN201910178722.9A 2019-03-11 2019-03-11 Special sealing filler applied to wellhead of oil pumping unit under high-water-content produced liquid condition Active CN109971052B (en)

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CN201910178722.9A CN109971052B (en) 2019-03-11 2019-03-11 Special sealing filler applied to wellhead of oil pumping unit under high-water-content produced liquid condition

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CN109971052B CN109971052B (en) 2021-06-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111500082A (en) * 2020-04-29 2020-08-07 大庆油田有限责任公司 Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0360214A2 (en) * 1988-09-21 1990-03-28 Nitto Denko Corporation Spot-weldable sheet adhesive
CN106633818A (en) * 2015-11-03 2017-05-10 中国石油化工股份有限公司 Polymer with penetration network structure and used for grouting material, 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
CN108047520A (en) * 2018-01-19 2018-05-18 重庆中田化工有限公司 A kind of automobile using environment-friendly type damping expansion glue and preparation method thereof
CN109369997A (en) * 2018-09-29 2019-02-22 嘉科（无锡）密封技术有限公司 A kind of sealing metal rubber and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0360214A2 (en) * 1988-09-21 1990-03-28 Nitto Denko Corporation Spot-weldable sheet adhesive
CN106633818A (en) * 2015-11-03 2017-05-10 中国石油化工股份有限公司 Polymer with penetration network structure and used for grouting material, 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
CN108047520A (en) * 2018-01-19 2018-05-18 重庆中田化工有限公司 A kind of automobile using environment-friendly type damping expansion glue and preparation method thereof
CN109369997A (en) * 2018-09-29 2019-02-22 嘉科（无锡）密封技术有限公司 A kind of sealing metal rubber and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111500082A (en) * 2020-04-29 2020-08-07 大庆油田有限责任公司 Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof
CN111500082B (en) * 2020-04-29 2022-03-29 大庆油田有限责任公司 Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof

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