CN101148979B - Novel method for preparing resin coating sand - Google Patents
Novel method for preparing resin coating sand Download PDFInfo
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- CN101148979B CN101148979B CN2006101273976A CN200610127397A CN101148979B CN 101148979 B CN101148979 B CN 101148979B CN 2006101273976 A CN2006101273976 A CN 2006101273976A CN 200610127397 A CN200610127397 A CN 200610127397A CN 101148979 B CN101148979 B CN 101148979B
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- coated sand
- sand
- fine powder
- resin
- component
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- 239000004576 sand Substances 0.000 title claims abstract description 48
- 229920005989 resin Polymers 0.000 title claims abstract description 24
- 239000011347 resin Substances 0.000 title claims abstract description 24
- 239000011248 coating agent Substances 0.000 title claims abstract description 15
- 238000000576 coating method Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- 239000003822 epoxy resin Substances 0.000 claims description 11
- 229920000647 polyepoxide Polymers 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 208000034189 Sclerosis Diseases 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 5
- 229920003169 water-soluble polymer Polymers 0.000 abstract description 4
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 abstract description 3
- 239000003129 oil well Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract 1
- 239000002861 polymer material Substances 0.000 abstract 1
- 229920001568 phenolic resin Polymers 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 239000005011 phenolic resin Substances 0.000 description 8
- 238000001914 filtration Methods 0.000 description 6
- -1 flexibilizer Substances 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical class OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 4
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 2
- 150000001412 amines Chemical class 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
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- CTKINSOISVBQLD-UHFFFAOYSA-N Glycidol Chemical compound OCC1CO1 CTKINSOISVBQLD-UHFFFAOYSA-N 0.000 description 1
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- KVBYPTUGEKVEIJ-UHFFFAOYSA-N benzene-1,3-diol;formaldehyde Chemical compound O=C.OC1=CC=CC(O)=C1 KVBYPTUGEKVEIJ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 210000001951 dura mater Anatomy 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- WJRBRSLFGCUECM-UHFFFAOYSA-N hydantoin Chemical compound O=C1CNC(=O)N1 WJRBRSLFGCUECM-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001021 polysulfide Chemical class 0.000 description 1
- 239000005077 polysulfide Chemical class 0.000 description 1
- 150000008117 polysulfides Chemical class 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
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- Mold Materials And Core Materials (AREA)
- Epoxy Resins (AREA)
Abstract
The new process of preparing resin coated sand includes the following steps: dividing sand into two components, coating one component with liquid epoxy resin and the other component with liquid curing agent, dispersing two components with fine powder one water soluble polymer material as the dispersant, and fluidizing and suspending separately in a vibrated fluidizing bed with the first introduced wet air to film the fine powder and the subsequently introduced dry air to dewater and harden the film, so as to obtain coated sand with solidified film. The resin coated sand is injected into oil well, and in well fluid, the water soluble polymer film is dissolved and the liquid epoxy resin and the curing agent are contacted to cure and cross link. The resin coated sand may have different recipes for different uses.
Description
Technical field
In the exploitation of oil natural gas, resin coated sand is used as the filtering agent of fracturing propping agents, sand output well, the backfill agent in nearly well cavity.The present invention provides a kind of new method of making resin coated sand, belongs to resin coated sand manufacturing technology field.
Background technology
At present, the resin coated sand technology that extensively adopt in the oil field is with A rank phenolic resins and sand Hybrid Heating, makes resin polymerization to the B rank, becomes blocks of solid after the cooling, rolls fragmentation, sieves, and obtains finished product.During use, inject the stratum to resin coated sand with slurries, under the formation temperature effect, resin continues to be aggregated to the C rank, is formed with the filtration beds of certain intensity and permeability, realizes the purpose of support, filtration, backfill.
But the phenolic resins coated sand finds that in use its performance can not satisfy the needs of storing and multiple underground working condition, and this mainly is:
1, phenolic resins reaches C rank final state by temperature in the stratum, and for most of middle and advanced stage oil wells, the temperature of payzone has been fallen very lowly, can not in the time that can wait for, be polymerized to the C rank, also just can not be formed with the filtration beds of intensity.Equally, for the pressure break of shallow-layer, also be because temperature is crossed low and can not be used.
2, the intensity of phenolic resins and toughness all are not so good as epoxy resin.
3, the polymerization of phenolic resins just can slowly be carried out at normal temperatures, so the storage period of phenolic resins coated sand is shorter.Especially in summer, storage period is shorter, in storing, often is bonded to the out of use situation of piece.
In order to break through phenolic resins coated sand limitation in use, people begin with epoxy resin as applying agent.The various assembly of epoxy resin and curing compound can be satisfied the requirement of basic, normal, high temperature and underwater curing condition, also can satisfy from-20 ℃ to 350 ℃ the requirement of service condition in the temperature range.But; Resin coated sand construction technology and equipment requirements coated sand must be to stop state admittedly; It must be loose each other, the not sticking state that does not connect; Only in this way, could be by slurries to downhole transmitted, and existing solid epoxy resin and solid-state curing compound in do not have enough chemisms in the low hot-well liquid.This has gone out a difficult problem just for development person.Someone as applying agent, processes coated sand to solid epoxy resin, when slurries are sent into the down-hole to this coated sand, utilizes slurries also to send into the down-hole to LCM again, and cross linking of epoxy resin is solidified, and is formed with the filtration beds of intensity.Regrettably, this product and construction technology are difficult to accepted by the oil field, and its reason is: 1, curing compound will be reached the required concentration of resin solidification by the dilution of well liquid, just must strengthen the curing compound injection rate, causes soaring of cost.2, a large amount of unnecessary curing compound can pollute the mining area water environment, and this is that Law on Environmental Protection is unallowed.
Certainly, also have directly to the down-hole and inject resin, that belongs to " artificial borehole wall " anti-sand method, no longer is the resin coated sand category.With regard to resin coated sand, the performance of existing product can not satisfy the requirement in market, oil field.
Summary of the invention
The present invention finds a kind of new method, new technology of making resin coated sand.Adopting said method and technology can produce the resin coated sand of various performances easily, break through the use limitation of existing phenolic resins coated sand, fully satisfy the demand of market, oil field aspect proppant, filtering agent and backfill agent.
New method of the present invention, new technology are:
1, be divided into A, B two parts to industry standard sand, A partly adds the coating agent becomes the A component, and B partly adds the coating agent becomes the B component.
2, the coating agent in the A component is made up of liquid-state epoxy resin, flexibilizer, coupling agent, reinforcing agent etc.Wherein, epoxy resin can and be taken into account cost and in following type, select assembly according to customer requirements: bisphenol A-type, methylol bisphenol A-type; The resorcinol type, resorcinol formaldehyde type, glycidyl ester type; Glycidol ammonia type, phenolic aldehyde epoxy type, mixed type and glycolylurea resin etc.Alternative type is many, explains that the present invention can satisfy multiple performance requirement.
3, the coating agent in the B component is made up of LCM and accelerator.According to customer requirements and cost, the curing compound of available assembly and accelerator type have: Versamid, phenol-formaldehyde resin modified, phenol aldehyde modified amine, polysulfide rubber, tertiary amines accelerator etc.
4, the fine powder of selecting water-soluble high-molecular material for use is sneaked into respectively in A component and the B component as dispersing agent (being later on film forming agent), stirs.Coated sand disperses mutual adhesion at following grain of dispersing agent effect, and every coated sand surface all sticks the water-soluble high-molecular material fine powder.See accompanying drawing 1.
5, in vibrated fluidized bed, make dispersing agent film forming (see figure 2).
Respectively A component and B component are put into vibrated fluidized bed, alternately feed humid air and dry air.Because the effect of vibration and air-flow, coated sand is in the fluidized suspension state in air-flow.When feeding humid air, the fine powder on coated sand surface is formed coating by the dissolving of the moisture in the humid air on the surface; When feeding dry air, the coating dehydration is solidified.Forming the surface is solid-state finished product coated sand.See accompanying drawing 3.
6, with the packaging bag of good seal performance respectively with A component, B component packaging seal, can put desiccant in the bag.
When 7, using, on-the-spot dismounting is poured A component and B component into the auger hopper simultaneously.Coating is dissolving gradually in well liquid, and the curing compound in the epoxy resin in the A component and the B component can fully contact after coated sand arrives the stratum, and the speed of curing and degree just only are decided by to have filled a prescription.
Description of drawings
Fig. 1 is the coated sand view of sneaking into dispersing agent;
Fig. 2 is coated sand coating sketch map in vibrated fluidized bed;
Fig. 3 is a finished product coated sand structural representation.
Among the figure: 1 be bonded in coated sand surface the solid-state coating that just forming by water soluble polymer of water soluble polymer fine powder, 2 liquid epoxy resin or liquid curing compound, 3 sand grains, 4 bodies, 5 at the coated sand of coating, 6 sieve plates, 7 vibrating motors, 8 springs, 9 bases, 10.
The specific embodiment
Use the fracturing sand of granularity as 0.4-1.0mm, be divided into A, B two parts, the coating agent of A part is by the E-51 bisphenol a resin, and methylol bisphenol a resin and resorcinol type epoxy resin are formed, and the coating agent of B part is formed with the phenol aldehyde modified amine of D31 by 2636.
Throw in dispersing agent sodium cellulose glycolate fine powder to A component and B component respectively, fully stir, after sand to be coated fully disperses; Pour into respectively in the vibrated fluidized bed, feed earlier humid air, can observe the one-tenth membrane stage after the wetted dissolving of fine powder; At last; Feed dry air, treat water evaporates after, form dura mater on the coated sand surface.
Claims (2)
1. method of making resin coated sand; It is characterized in that; Sand is divided into A, B two components, applies with liquid-state epoxy resin and LCM respectively, the fine powder with water-soluble high-molecular material makes it become apparent solid-state coated sand as dispersing agent, film forming agent again.
2. a kind of method of making resin coated sand according to claim 1 is characterized in that its water-soluble high-molecular material fine powder carries out in vibrated fluidized bed at the coated sand surface filming; Feed humid air earlier; Fine powder feeds dry air more just at surface filming, coating dehydration sclerosis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101273976A CN101148979B (en) | 2006-09-18 | 2006-09-18 | Novel method for preparing resin coating sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101273976A CN101148979B (en) | 2006-09-18 | 2006-09-18 | Novel method for preparing resin coating sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101148979A CN101148979A (en) | 2008-03-26 |
| CN101148979B true CN101148979B (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101273976A Expired - Fee Related CN101148979B (en) | 2006-09-18 | 2006-09-18 | Novel method for preparing resin coating sand |
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| Country | Link |
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| CN (1) | CN101148979B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570685B (en) * | 2009-05-27 | 2011-07-27 | 中国石化股份胜利油田分公司孤岛采油厂工艺研究所 | Quick curing agent for coating sand |
| CN104946235A (en) * | 2014-03-28 | 2015-09-30 | 北京仁创科技集团有限公司 | Preparation method of self-suspension proppant and prepared proppant |
| CN105542739B (en) * | 2016-01-21 | 2017-03-08 | 林川丰 | A kind of sand control coated sand and preparation method thereof |
| CN106244136B (en) * | 2016-08-27 | 2019-04-26 | 新密市万力实业发展有限公司 | A kind of curable sand control proppant and preparation method thereof |
| CN106967410A (en) * | 2017-01-20 | 2017-07-21 | 北京清水兰德油田技术服务有限公司 | A kind of resin suspension agent composition and its application |
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| US5916933A (en) * | 1995-03-28 | 1999-06-29 | Borden Chemical, Inc. | Bisphenol-containing resin coating articles and methods of using same |
| US5955144A (en) * | 1994-07-21 | 1999-09-21 | Sanatrol, Inc. | Well treatment fluid compatible self-consolidation particles |
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2006
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| Publication number | Publication date |
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| CN101148979A (en) | 2008-03-26 |
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