CN106634920B - A kind of low density foam resin sand control agent and preparation method thereof suitable for sand producing in unconsolidated sandstone reservoir horizontal well - Google Patents
A kind of low density foam resin sand control agent and preparation method thereof suitable for sand producing in unconsolidated sandstone reservoir horizontal well Download PDFInfo
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- CN106634920B CN106634920B CN201611208995.6A CN201611208995A CN106634920B CN 106634920 B CN106634920 B CN 106634920B CN 201611208995 A CN201611208995 A CN 201611208995A CN 106634920 B CN106634920 B CN 106634920B
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- low density
- horizontal well
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- 239000004576 sand Substances 0.000 title claims abstract description 171
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 94
- 229920005989 resin Polymers 0.000 title claims abstract description 72
- 239000011347 resin Substances 0.000 title claims abstract description 72
- 239000004620 low density foam Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000006260 foam Substances 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims abstract description 19
- 239000004088 foaming agent Substances 0.000 claims abstract description 17
- 239000007822 coupling agent Substances 0.000 claims abstract description 16
- 239000003381 stabilizer Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 239000011435 rock Substances 0.000 claims abstract description 12
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 11
- 230000035699 permeability Effects 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 230000001788 irregular Effects 0.000 claims abstract description 4
- 229920000877 Melamine resin Polymers 0.000 claims description 25
- 239000004640 Melamine resin Substances 0.000 claims description 23
- 239000000243 solution Substances 0.000 claims description 20
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical group [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 16
- 238000007596 consolidation process Methods 0.000 claims description 16
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical class OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 9
- 229910000077 silane Inorganic materials 0.000 claims description 9
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical group OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 8
- 235000019270 ammonium chloride Nutrition 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 6
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 2
- 239000003945 anionic surfactant Substances 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 133
- 239000003921 oil Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000007711 solidification Methods 0.000 description 6
- 230000008023 solidification Effects 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- -1 hydroxylmethyl Chemical group 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- 102000004895 Lipoproteins Human genes 0.000 description 2
- 108090001030 Lipoproteins Proteins 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 2
- 229920003180 amino resin Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Substances O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 2
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical group CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- OOSUHIIJYDMCCW-UHFFFAOYSA-N cyanamide;formaldehyde Chemical compound O=C.NC#N OOSUHIIJYDMCCW-UHFFFAOYSA-N 0.000 description 1
- 229960000935 dehydrated alcohol Drugs 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical class C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005829 trimerization reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/56—Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof
- C09K8/57—Compositions based on water or polar solvents
- C09K8/575—Compositions based on water or polar solvents containing organic compounds
- C09K8/5751—Macromolecular compounds
- C09K8/5755—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/56—Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof
- C09K8/57—Compositions based on water or polar solvents
- C09K8/575—Compositions based on water or polar solvents containing organic compounds
- C09K8/5751—Macromolecular compounds
- C09K8/5758—Macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/025—Consolidation of loose sand or the like round the wells without excessively decreasing the permeability thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The low density foam resin sand control agent and preparation method thereof that the present invention relates to a kind of suitable for sand producing in unconsolidated sandstone reservoir horizontal well, raw material components and its weight percent composition are as follows: cementing agent 97.1~98.85%, foaming agent 0.3%~0.8%, foam stabilizer 0.7%~1.3%, curing agent 0.05%~0.5%, coupling agent 0.1%~0.3%.Low density foam resin sand control agent of the present invention apparent density at 25 DEG C of room temperature is 0.558-0.634g/cm3, inhomogeneous formation can be uniformly injected into；The system consolidate rock core compression strength be 5.2~7.7MPa, 1.1~3.5 μm of permeability2, that is, it is adaptable to ordinary straight well sand control, the secondary sand control after being also adapted to horizontal well, high angle hole, the chemical sand control of irregular borehole and mechanical sand control failure；In addition, its preparation and construction technology are simple, industrial rank raw material sources are extensive, available in oil-water well chemical sand control field to be well widely applied.
Description
Technical field
The present invention relates to a kind of low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well and its
Preparation method belongs to oil field chemistry sand-proof technical field.
Background technique
Currently, loose sand oil accumulation distribution in China's is wide, and rich reserves.Sand production of oil-gas wells is the main of this kind of oil reservoir exploitation
Contradiction frequently can lead to sand and bury oil reservoir or pit shaft sand plug, or even causes oil/gas well halt production operation, both improved crude oil production at
This, and increase field management difficulty.As oil field sand prevention technology constantly tends to be perfect and mature, gradually form chemical anti-
Sand and mechanical sand control two major classes, wherein chemical sand control is to squeeze into loose oil reservoir with organic or inorganic chemical agent or be prefilled with layer of sand,
Make to be cemented to have between sand grains and sand grains some strength, good penetrability layer of sand solid sand technique.The advantages of chemical sand control is to apply
Without residue in well after work, sand grains is consolidated from more sheet suitable for thin silt, and can be used for the sand control of abnormal high pressure well layer.
However, conventional chemical sand control system is mainly chemical resin sand control, have density big, easily deposits, stratum can not be uniformly injected into；
The problems such as larger to stratum permeability injury after chemical bond injection.
It is solid that Chinese patent literature CN1168407A (application number: 97105102.X) discloses a kind of high-temp foamed resin sand control
Sand agent prescription technique, the sand-fixating agent are mixed by addition foaming agent aluminium powder, mutual solvent and curing agent using phenol-formaldehyde resin modified as base fluid
It closes and is made, which can be formed by curing some strength under the conditions of 350 DEG C of high temperature, the foamed resin sand-fixating agent
It has excellent performance at high temperature, but density is 1.08-1.10g/cm at 25 DEG C of room temperature3, easily deposit, can not be uniformly injected into ground
Layer, and preparation process is complicated, cannot be widely applied to oil field chemistry sand-proof.
Chinese patent literature CN103305201A (it is horizontal 201310184669.6) application number: to disclose a kind of heavy crude heat extraction
Well resin sand control agent and the preparation method and application thereof.The chemical sand control agent with phenolic resin be main cementing agent, with other furans
Resin, organic siliconresin, heat resistance accessory and blender compounding are made.The chemical sand control agent consolidating stratum sand compression strength is
5MPa, 350 DEG C of heatproof after solidification, still, the system using the inflammable toxic solution such as methanol, acetone and ethylbenzene as blender,
This undoubtedly increases the risk of site operation, limits its application in terms of oilfield construction.
Chinese patent literature 104449624A (application number: 201410682947.5) discloses a kind of new type of sand prevention agent, especially
It is related to a kind of chemical sand control agent that well is adopted suitable for steam thermal recovery of heavy oil field.The sand control agent is molten by cementing component, curing agent, overlay film
Agent and coupling agent composition, the weight proportion of each component are as follows: 30~60 parts of cementing component, 3~6 parts of curing agent, overlay film solvent 3~6
Part, 1~3 part of coupling agent；Described cementing group is divided into melamine resin modified bisphenol A type epoxy resin CYD-128, described
Curing agent is 2-Methyl-imidazole；The overlay film solvent is dehydrated alcohol, acetone；The coupling agent is coupling
Agent KH-550, KH-560 or KH-570.Sand control agent of the present invention has high temperature resistance good, resistance to compression, High anti bending strength, together
When with excellent permeability, the strong advantage of acid and alkali-resistance salt medium performance can satisfy in the exploitation of oil field steamHuff puff oil wells
The requirement of the mechanical strengths such as resistance to compression, flexural strength；The system is coated sand, i.e., cementing agent is coated in sand surface, then infused
The problems such as entering underground, there are solid sand higher cost, complicated construction technique and not being suitable for long well section horizontal well.
Summary of the invention
The purpose of the present invention is to provide a kind of low density foam resins suitable for sand producing in unconsolidated sandstone reservoir horizontal well
Sand control agent and preparation method thereof, the sand control agent overcome that conventional chemical sand control system density is big, consolidation strength is low, solidification temperature is high
The problems such as.
The present invention is achieved through the following technical solutions:
Summary of the invention:
The present invention introduces foaming agent and foam stabilizer, to be formed low close using watersoluble melamine formaldehyde resin as base fluid
Spend foamed resin sand control system.The sand control agent is low in cost, preparation process is simple and construction safety；It not only can satisfy and improve
The sand control requirement and effect of thin layer, Extra-fine sand interval, enhance sand control intensity, reduce formation damage；Long well section water can also be met
The sand control demand of horizontal well, high angle hole and casing deformation well realizes deep, uniform, high intensity sand control；In addition, can be used for mechanical sand control
Secondary sand control afterwards, expands the scope of application of sand control, improves the effect and benefit of sand control.
Detailed description of the invention:
A kind of low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well, the sand control agent is in room temperature
Apparent density is 0.558-0.634g/cm under (25 DEG C)3, raw material components and its weight percent composition it is as follows:
Cementing agent 97.1~98.85%, foaming agent 0.3%~0.8%, foam stabilizer 0.7%~1.3%, curing agent
0.05%~0.5%, coupling agent 0.1%~0.3%.
Currently preferred, the cementing agent is melamine resin powder and water (1~3) in mass ratio: 5 is mixed
It closes and melamine resin solution is made.
It is further preferred that the cementing agent mixes system with water 2:5 in mass ratio for melamine resin powder
Obtain melamine resin solution.
Currently preferred, the foaming agent is anionic surfactant.
It is further preferred that the foaming agent is lauryl sodium sulfate (SDS).
Currently preferred, the foam stabilizer is grade oil hydroxymethyl cellulose (CMC), purity > 95%.
Currently preferred, the foam stabilizer is that grade oil height glues hydroxymethyl cellulose (HV-CMC).For existing commercially available production
Product, Renqiu City E-BANG Chemical Co., Ltd. are on sale.
Currently preferred, the curing agent is faintly acid curing agent.
It is further preferred that the curing agent is ammonium chloride.
Currently preferred, the coupling agent is silane resin acceptor kh-550.
A currently preferred technical solution, the low density foam resin suitable for sand producing in unconsolidated sandstone reservoir horizontal well
Sand control agent, raw material components and its weight percent composition are as follows:
Cementing agent 98.2~98.8%, foaming agent 0.3%~0.5%, foam stabilizer 0.7%~1.0%, curing agent 0.05%
~0.1%, coupling agent 0.1%~0.2%.
The highly preferred technical solution of the present invention, the low density foam suitable for sand producing in unconsolidated sandstone reservoir horizontal well
Resin sand control agent, raw material components and its weight percent composition are as follows:
Cementing agent 98.25%, foaming agent 0.5%, foam stabilizer 1.0%, curing agent 0.05%, coupling agent 0.2%.
The highly preferred technical solution of the present invention, the low density foam suitable for sand producing in unconsolidated sandstone reservoir horizontal well
Resin sand control agent, raw material components and its weight percent composition are as follows:
The melamine resin solution 98.25% of concentration 40%, lauryl sodium sulfate 0.5%, hydroxylmethyl cellulose
Element 1.0%, ammonium chloride 0.05%, silane resin acceptor kh-550 0.2%.
A second object of the present invention is to provide a kind of low density foams suitable for sand producing in unconsolidated sandstone reservoir horizontal well
The preparation method of resin sand control agent.
A kind of preparation method of the low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well, including
Steps are as follows:
1) melamine resin powder is added in water, is sufficiently stirred and is uniformly dissolved, melamino-formaldehyde tree is made
Lipoprotein solution；
2) curing agent and coupling agent are added in melamine resin solution according to the ratio, are mixed evenly；
3) it finally, foaming agent and foam stabilizer are added according to the ratio, is thoroughly mixed again uniformly, by uniformly mixed solution
It is foamed according to 1: 1~2 ratio by foam maker with air, low density foam resin sand control agent is made.
A kind of application of the low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well, for loose
Sandstone oil reservoir sand output well consolidates sand, and adapting to formation temperature is 40~150 DEG C.
Currently preferred, by the sand grains of cementing 20~120 mesh of sand liquid mass ratio 4:1, after solidifying 108h, consolidation rock core is anti-
Compressive Strength is 5.2~7.7MPa, and consolidation core permeability is 1.1~3.5 μm2。
Solid sand of the invention be suitable for common straight well sand control, horizontal well, high angle hole, irregular borehole chemical sand control or
Secondary sand control after mechanical sand control failure.
Sand in sand liquid mass ratio of the present invention refers to that quartz sand, liquid refer to foamed resin sand control system.
Gas of the present invention is nitrogen.
Water of the present invention is tap water or earth's surface clear water, can not be oilfield produced waste water.
Foamed resin sand control agent of the present invention has good compatibility with formation fluid, and gained consolidates rock core tool
There are good water-fast, oil resistant, alkaline-resisting, salt resistant character.
Inventors have surprisingly discovered that the bubble that the present invention is made of cementing agent, foaming agent, foam stabilizer, curing agent and coupling agent
Foam consolidates sand body system has the advantages that density is low, foaming properties are good and consolidation strength is big and solid sand effect is good at normal temperature, can be cementing
Agent is directly injected into underground and carries out consolidation sand grains, and sand control agent is low in cost, preparation process is simple and construction safety；Can not only it expire
Foot and the sand control requirement and effect for improving thin layer, Extra-fine sand interval, enhance sand control intensity, reduce formation damage；It can also meet
The sand control demand of long well section horizontal well, high angle hole and casing deformation well realizes deep, uniform, high intensity sand control.
The melamine resin triazine cyclic group stable since molecular structure contains, compared with linear structure urea-formaldehyde resin
There are higher consolidation strength and thermal stability.Melamine resin belongs to one kind of amino resins, because it has centainly
Water solubility form a kind of foamed resin system with low-density by introducing water-soluble foaming agent and foam stabilizer.Trimerization
Cyanamide formaldehyde resin curing reaction occurs mainly in methylol (- CH2OH) the contracting between methylol, methylol and reactive hydrogen etc.
It closes.Wherein, the condensation between methylol is based on the ehter bond that generates.Ether in resin curing process, due to fuel factor, in resin
Key is decomposed.And the participation of faintly acid curing agent, it can not only accelerate the curing rate of resin, but also improve consolidating for resin
Change degree.It is silane resin acceptor kh-550, i.e. r- amine propyl-triethoxysilicane, media-resistant ability that the present invention, which selects coupling agent,
By force, Applicable temperature range is wide, and chemical property is stablized, and can greatly enhance the solid sand effect of foamed resin system.It is anti-by hydrolysis
First silanol should be obtained, the poly- first silanol that final condensation dehydration obtains plays significant coupling to sand-fixating agent and sand grains, it
Hydroxyl can form hydrogen bond, group in addition and sand-fixating agent with sand grain surface hydroxyl and link together, and hydrolysis-condensation reaction skeleton symbol is such as
Under:
In above formula: R-alkyl, Y-amino, anilino-, glycidyl ethers base etc., R '-methyl or ethyl.
In conclusion foam of the invention consolidates sand body system has that density is low, foaming properties are good and consolidation strength at normal temperature
The advantages that big and solid sand effect is good.
Technical characterstic of the invention:
1, low density foam resin sand control agent of the invention, can be uniformly injected into inhomogeneous formation, both be adapted to straight
Well sand control, it is secondary anti-after being also adapted to horizontal well, high angle hole, the chemical sand control of irregular borehole and mechanical sand control failure
Sand.
2, low density foam resin sand control agent of the invention preparation and construction technology are simple, and industrial rank raw material sources are wide
It is general, it is available in oil-water well chemical sand control field to be well widely applied.
Detailed description of the invention
Fig. 1 is the determination of foamed resin sand-consolidating agent solidification temperature, and abscissa is solidification temperature, DEG C, ordinate is pressure resistance
Degree, MPa.
Specific embodiment
To further illustrate the present invention, it is exemplified below specific embodiment, but institute's protection scope of the present invention is not limited only to this.
Furane resins, Lauxite, unsaturated-resin are the prior art, and market is bought.
Embodiment 1
A kind of low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well, the sand control agent is in room temperature
Apparent density is 0.558-0.634g/cm under (25 DEG C)3, raw material components and its weight percent composition it is as follows:
The melamine resin solution 98.25% of concentration 40%, lauryl sodium sulfate 0.5%, hydroxylmethyl cellulose
Element 1.0%, ammonium chloride 0.05%, silane resin acceptor kh-550 0.2%.
Preparation method:
1) melamine resin powder is added in water, is sufficiently stirred and is uniformly dissolved, melamino-formaldehyde tree is made
Lipoprotein solution；
2) curing agent and coupling agent are added in melamine resin solution according to the ratio, 3min (revolving speed is mixed
For 600r/min)；
3) it finally, foaming agent and foam stabilizer are added according to the ratio, is thoroughly mixed again uniformly, by uniformly mixed solution
It is foamed by foam maker, low density foam resin sand control agent is made.
Gained low density foam resin sand control agent apparent density test case: under the conditions of room temperature (25 DEG C), the foamed resin
Sand control agent apparent density is 0.558-0.634g/cm3, excellent foaming properties are showed, and with formation fluid with good
Compatibility.
Embodiment 2
With the low density foam resin sand control agent described in embodiment 1 suitable for sand producing in unconsolidated sandstone reservoir horizontal well, no
It is with place:
The melamine resin solution 98.64% of concentration 40%, lauryl sodium sulfate 0.4%, hydroxylmethyl cellulose
Element 0.8%, ammonium chloride 0.06%, silane resin acceptor kh-550 0.1%.
The preparation method is the same as that of Example 1.
Embodiment 3
With the low density foam resin sand control agent described in embodiment 1 suitable for sand producing in unconsolidated sandstone reservoir horizontal well, no
It is with place:
The melamine resin solution 98.2% of concentration 40%, lauryl sodium sulfate 0.5%, hydroxymethyl cellulose
1.0%, ammonium chloride 0.1%, silane resin acceptor kh-550 0.2%.
The preparation method is the same as that of Example 1.
Embodiment 4
With the low density foam resin sand control agent described in embodiment 1 suitable for sand producing in unconsolidated sandstone reservoir horizontal well, no
It is with place:
The melamine resin solution 98.8% of concentration 40%, lauryl sodium sulfate 0.3%, hydroxymethyl cellulose
0.7%, ammonium chloride 0.05%, silane resin acceptor kh-550 0.15%.
The preparation method is the same as that of Example 1.
Experimental example 1
1, solid sand test method: measurement quartz sand quality is 100g, fillingGlass tube in, inject water
Sand surface is soaked, the amino resins foam system of 1PV is then injected into, glass tube is placed in temperature 50 C, pressure 5MPa
Solidify 108h in closed container, take out glass tube and be cooled to room temperature, takes out consolidation rock core and polish its end face, to the rock core of consolidation
Compression strength and permeability measure.
The low density foam resin sand control agent of embodiment 1 is consolidated into grittiness energy comprehensive evaluation result: such as table 1, by sand liquor ratio 4:1
The sand grains of cementing 20~120 mesh, consolidation rock core compression strength be 5.2~7.7MPa, 1.1~3.5 μm of permeability2, and competent rock
The heart has good water-fast, oil resistant, alkaline-resisting, salt resistant character.
Influence of the different sand grains partial sizes of table 1 to solid grittiness energy
| Sand diameter, mesh | 20-40 | 40-60 | 60-80 | 80-100 | 100-120 |
| Compression strength, MPa | 5.2 | 5.7 | 6.3 | 6.9 | 7.7 |
| Permeability, μm2 | 3.5 | 2.8 | 2.3 | 1.7 | 1.1 |
2, gained low density foam resin sand control agent solidification temperature test case: by the sand of cementing 40~60 mesh of sand ratio 1:4
Grain, solidifies 108h by 30~90 DEG C of solidification temperature range, to investigate resin system to the adaptability of formation temperature, experimental result is shown in
Fig. 1.
As seen from Figure 1 when temperature is greater than 40 DEG C, consolidation rock core compression strength tends towards stability, and compression strength is all larger than
5MPa.Foamed resin sand control system is suitable for the stratum that formation temperature is greater than 40 DEG C, can be formed by curing centainly in low temperature formation
Intensity.
Comparative example 1
Existing common resins chemical sand control agent, apparent density test case: at 20 DEG C of temperature, furane resins sand control system table
Sight density is 1.14-1.34g/cm3.Under the conditions of 25 DEG C of room temperature, Lauxite sand control system apparent density is 1.05-1.17g/
cm3；Unsaturated-resin emulsion resin sand control system apparent density is 0.86-0.95g/cm3；
Comparative example 2
Conventional water soluble resin chemical sand control agent, Gu grittiness energy test case:
Unsaturated-resin emulsion resin sand control system, consolidation rock core compression strength consolidated sand strength are less than 4Mpa, permeability
1.57~2.83 μm2；Furane resins sand control system, consolidation rock core compression strength are greater than 5Mpa, but permeability be only 0.7~
1.3μm2；Lauxite sand control system, consolidation rock core compression strength are not only smaller than 4MPa, and 0.1~1 μm of permeability2。
Claims (10)
1. a kind of low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well, the sand control agent is in room temperature
Apparent density is 0.558-0.634g/cm under (25 DEG C)3, raw material components and its weight percent composition it is as follows:
Cementing agent 97.1 ~ 98.85%, foaming agent 0.3% ~ 0.8%, foam stabilizer 0.7% ~ 1.3%, curing agent 0.05% ~ 0.5% are even
Join agent 0.1% ~ 0.3%；The cementing agent is melamine resin powder and water (1 ~ 3) in mass ratio: 5 are mixed to prepare
Melamine resin solution, the foaming agent are anionic surfactant, and the foam stabilizer is grade oil methylol
Cellulose, purity > 95%, the curing agent are faintly acid curing agent.
2. the low density foam resin sand control agent according to claim 1 suitable for sand producing in unconsolidated sandstone reservoir horizontal well,
It is characterized in that, the cementing agent is that melamine resin powder and water 2:5 in mass ratio are mixed to prepare melamine
Formaldehyde resin solution.
3. the low density foam resin sand control agent according to claim 1 suitable for sand producing in unconsolidated sandstone reservoir horizontal well,
It is characterized in that, the foaming agent is lauryl sodium sulfate (SDS).
4. the low density foam resin sand control agent according to claim 1 suitable for sand producing in unconsolidated sandstone reservoir horizontal well,
It is characterized in that, the foam stabilizer is that grade oil height glues hydroxymethyl cellulose.
5. the low density foam resin sand control agent according to claim 1 suitable for sand producing in unconsolidated sandstone reservoir horizontal well,
It is characterized in that, the curing agent is ammonium chloride；The coupling agent is silane resin acceptor kh-550.
6. the low density foam resin sand control agent according to claim 1 suitable for sand producing in unconsolidated sandstone reservoir horizontal well,
It is characterized in that, its raw material components and its weight percent composition are as follows:
Cementing agent 98.2 ~ 98.8%, foaming agent 0.3% ~ 0.5%, foam stabilizer 0.7% ~ 1.0%, curing agent 0.05% ~ 0.1%, coupling
Agent 0.1% ~ 0.2%.
7. the low density foam resin sand control agent according to claim 1 suitable for sand producing in unconsolidated sandstone reservoir horizontal well,
It is characterized in that, its raw material components and its weight percent composition are as follows:
The melamine resin solution 98.25% of concentration 40%, lauryl sodium sulfate 0.5%, hydroxymethyl cellulose 1.0%,
Ammonium chloride 0.05%, silane resin acceptor kh-550 0.2%.
8. the preparation of the low density foam resin sand control agent described in claim 1 suitable for sand producing in unconsolidated sandstone reservoir horizontal well
Method comprises the following steps that
1) melamine resin powder is added in water, is sufficiently stirred and is uniformly dissolved, it is molten that melamine resin is made
Liquid；
2) curing agent and coupling agent are added in melamine resin solution according to the ratio, are mixed evenly；
3) it finally, foaming agent and foam stabilizer are added according to the ratio, is thoroughly mixed again uniformly, by uniformly mixed solution and sky
Gas is foamed according to 1: 1~2 ratio by foam maker, and low density foam resin sand control agent is made.
9. the low density foam resin sand control agent described in claim 1 suitable for sand producing in unconsolidated sandstone reservoir horizontal well is answered
With consolidate sand for sand producing in unconsolidated sandstone reservoir well, adapting to formation temperature is 40 ~ 150 DEG C.
10. application according to claim 9, which is characterized in that the sand grains of cementing 20 ~ 120 mesh of sand liquid mass ratio 4:1 is pressed,
After solidifying 108h, consolidation rock core compression strength is 5.2 ~ 7.7MPa, and consolidation core permeability is 1.1~3.5 μm2；Described consolidates
Sand is suitable for two after common straight well sand control, horizontal well, high angle hole, the chemical sand control of irregular borehole or mechanical sand control failure
Secondary sand control.
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| CN110454120B (en) * | 2019-08-13 | 2021-10-01 | 青岛大地新能源技术研究院 | Construction method for self-gathering sand prevention of oil-water well |
| CN111022011B (en) * | 2019-12-03 | 2022-03-18 | 中国石油化工股份有限公司 | Construction method of foamable resin sand consolidation agent for argillaceous fine silt oil reservoir |
| CN112521926A (en) * | 2020-05-06 | 2021-03-19 | 中国石油天然气股份有限公司 | Water-based compound type foam resin sand prevention system, preparation method and application thereof |
| CN111732944A (en) * | 2020-05-27 | 2020-10-02 | 东营东方化学工业有限公司 | Sand consolidation agent composition for oil field and manufacturing method thereof |
| CN112920786B (en) * | 2021-02-01 | 2022-07-19 | 成都理工大学 | Composite sand control agent with high permeability retention rate |
| CN117551440B (en) * | 2024-01-10 | 2024-03-26 | 东营煜煌能源技术有限公司 | Foamed resin sand-fixing agent and preparation method thereof |
| CN117844464A (en) * | 2024-03-07 | 2024-04-09 | 东营区四通化工有限责任公司 | High-permeability resin sand-fixing agent for fracturing and manufacturing method thereof |
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