CN106634920A - Low-density foam resin sand preventing agent suitable for sand production horizontal well of unconsolidated sandstone reservoir and preparation method of low-density foam resin sand preventing agent - Google Patents
Low-density foam resin sand preventing agent suitable for sand production horizontal well of unconsolidated sandstone reservoir and preparation method of low-density foam resin sand preventing agent Download PDFInfo
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- CN106634920A CN106634920A CN201611208995.6A CN201611208995A CN106634920A CN 106634920 A CN106634920 A CN 106634920A CN 201611208995 A CN201611208995 A CN 201611208995A CN 106634920 A CN106634920 A CN 106634920A
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- sand
- agent
- density foam
- sand control
- foam resin
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- 239000004576 sand Substances 0.000 title claims abstract description 177
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 102
- 229920005989 resin Polymers 0.000 title claims abstract description 79
- 239000011347 resin Substances 0.000 title claims abstract description 79
- 239000004620 low density foam Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- 239000006260 foam Substances 0.000 claims abstract description 23
- 239000007822 coupling agent Substances 0.000 claims abstract description 19
- 239000000126 substance Substances 0.000 claims abstract description 19
- 239000004088 foaming agent Substances 0.000 claims abstract description 18
- 239000003381 stabilizer Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011435 rock Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 230000035699 permeability Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000001788 irregular Effects 0.000 claims abstract description 4
- 229920000877 Melamine resin Polymers 0.000 claims description 24
- 239000004640 Melamine resin Substances 0.000 claims description 23
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical group [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 16
- 239000003921 oil Substances 0.000 claims description 16
- 238000007596 consolidation process Methods 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 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
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 8
- 235000019270 ammonium chloride Nutrition 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 229910000077 silane Inorganic materials 0.000 claims description 8
- 238000007711 solidification Methods 0.000 claims description 8
- 230000008023 solidification Effects 0.000 claims description 8
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 7
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- -1 silicon Alkane Chemical class 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 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
- OOSUHIIJYDMCCW-UHFFFAOYSA-N cyanamide;formaldehyde Chemical compound O=C.NC#N OOSUHIIJYDMCCW-UHFFFAOYSA-N 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000005829 trimerization reaction Methods 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 133
- 239000000243 solution Substances 0.000 description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects 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
- 239000012530 fluid Substances 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000005516 engineering process Methods 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
- 230000002708 enhancing effect Effects 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
- 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
- 239000013065 commercial product Substances 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
- 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
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 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
- 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 invention relates to a low-density foam resin sand preventing agent suitable for a sand production horizontal well of an unconsolidated sandstone reservoir and a preparation method of the low-density foam resin sand preventing agent. The low-density foam resin sand preventing agent is prepared from the following raw material components in percentage by weight: 97.1 to 98.85 percent of cementing agent, 0.3 to 0.8 percent of foaming agent, 0.7 to 1.3 percent of foam stabilizer, 0.05 to 0.5 percent of curing agent and 0.1 to 0.3 percent of coupling agent. The apparent density of the low-density foam resin sand preventing agent disclosed by the invention is 0.558 to 0.634g/cm<3>, and the low-density foam resin sand preventing agent can be uniformly injected into a heterogeneity stratum; the compressive strength of a system solidified rock core is 5.2 to 7.7MPa, and the permeability of the system solidified rock core is 1.1 to 3.5mu m<2>, so the low-density foam resin sand preventing agent can be applied to sand prevention of an ordinary vertical well, chemical sand control of a horizontal well, a highly-deviated well and irregular boreholes as well as secondary sand prevention after mechanical sand control is failed; besides, the low-density foam resin sand preventing agent is simple in preparation and construction process and wide in industrial raw material source, and can be well and widely applied to the field of chemical sand control of an oil-water well.
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 technology
At present, the distribution of China's loose sand oil accumulation 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 buries oil reservoir or pit shaft sand plug, or even cause Oil/gas Well stopping production operation, both improve crude oil production into
This, increased field management difficulty again.As oil field sand prevention technology constantly tends to improving and ripe, gradually form chemical anti-
Sand and the big class of mechanical sand control two, wherein, chemical sand control is to clamp-on loose oil reservoir with organic or inorganic chemical agent or be prefilled with layer of sand,
Make to be cemented to the solid sand technique with some strength, the layer of sand of good penetrability between sand grains and sand grains.The advantage of chemical sand control is to apply
Without legacy in well after work, it is adaptable to which thin silt consolidates sand grains from more sheet, and can be used for the sand control of abnormal pressure well layer.
However, the chemical sand control system of routine is mainly chemical resin sand control, and it is big with density, easily deposit, it is impossible to be uniformly injected into stratum；
The problems such as larger to stratum permeability injury after chemical bond injection.
Chinese patent literature CN1168407A (application number：97105102.X) disclose a kind of high-temp foamed resin sand control to consolidate
Sand agent prescription technique, the sand-fixating agent is mixed by adding foaming agent aluminium powder, mutual solvent and curing agent with phenol-formaldehyde resin modified as base fluid
Close and be obtained, the foamed resin sand-fixating agent can solidify to form some strength under the conditions of 350 DEG C of high temperature, the foamed resin sand-fixating agent
Excellent performance at high temperature, but in 25 DEG C of normal temperature, density is 1.08-1.10g/cm3, easily deposit, it is impossible to be uniformly injected into ground
Layer, and complicated process of preparation, it is impossible to be widely used in oil field chemistry sand-proof.
Chinese patent literature CN103305201A (application number：201310184669.6) a kind of heavy crude heat extraction level is disclosed
Well resin sand control agent and preparation method and application.The chemical sand control agent with phenolic resin as main cementing agent, with other furans
Resin, organic siliconresin, heat resistance accessory and blender compounding is obtained.The chemical sand control agent consolidating stratum sand compression strength is
5MPa, 350 DEG C of heatproof after solidification, but, the system adopts the inflammable toxic solutions such as methyl alcohol, acetone and ethylbenzene as blender,
This undoubtedly increased the risk of site operation, limit its application in terms of oilfield construction.
Chinese patent literature 104449624A (application number：201410682947.5) a kind of new type of sand prevention agent is disclosed, 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 are constituted, and the weight proportion of each component is：30～60 parts of cementing component, 3～6 parts of curing agent, overlay film solvent 3～6
Part, 1～3 part of coupling agent；The cementing component is melamine resin modified bisphenol A type epoxy resin CYD-128, described
Curing agent is 2-Methyl-imidazole；The overlay film solvent is absolute ethyl alcohol, acetone；The coupling agent is coupling
Agent KH-550, KH-560 or KH-570.Sand control agent of the present invention has resistance to elevated temperatures good, resistance to compression, High anti bending strength, together
When there is excellent permeability, the strong advantage of acid and alkali-resistance salt medium performance, in disclosure satisfy that oil field steamHuff puff oil wells exploitation
The requirement of the mechanical strengths such as resistance to compression, rupture strength；The system be coated sand, will cementing agent be coated in sand surface, then note
Enter underground, there are problems that relatively costly solid sand, complicated construction technique and be not suitable for long well section.
The content of the invention
It is an object of the invention to provide a kind of low density foam resin suitable for sand producing in unconsolidated sandstone reservoir horizontal well
Sand control agent and preparation method thereof, the sand control agent overcomes 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 with watersoluble melamine formaldehyde resin as base fluid, low close so as to be formed
Degree foamed resin sand control system.The sand control agent is with low cost, preparation process is simple and construction safety；Not only can meet and improve
Thin layer, the sand control of Extra-fine sand interval require and effect that enhancing sand control intensity reduces 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；Additionally, 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 normal temperature
Apparent density is 0.558-0.634g/cm under (25 DEG C)3, its raw material components and its percentage by weight 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, described cementing agent is melamine resin powder and water (1～3) in mass ratio:5 mix
Close and melamine resin solution is obtained.
It is further preferred that described cementing agent is melamine resin powder and water in mass ratio 2:5 mixing systems
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).
It is currently preferred, the foam stabilizer be grade oil hydroxymethyl cellulose (CMC), purity>95%.
Currently preferred, the foam stabilizer is the high viscous hydroxymethyl cellulose (HV-CMC) of grade oil.For existing commercial product
Product, Renqiu City E-BANG Chemical Co., Ltd. is 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 scheme, it is adaptable to the low density foam resin of sand producing in unconsolidated sandstone reservoir horizontal well
Sand control agent, its raw material components and its percentage by weight constitute 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 scheme of the present invention, it is adaptable to the low density foam of sand producing in unconsolidated sandstone reservoir horizontal well
Resin sand control agent, its raw material components and its percentage by weight constitute 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 scheme of the present invention, it is adaptable to the low density foam of sand producing in unconsolidated sandstone reservoir horizontal well
Resin sand control agent, its raw material components and its percentage by weight constitute 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%.
Second object of the present invention is to provide a kind of low density foam 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
Step is as follows：
1) melamine resin powder is added in water, is sufficiently stirred for being uniformly dissolved, melamino-formaldehyde tree is obtained
Lipoprotein solution；
2) curing agent and coupling agent are added in melamine resin solution by proportioning, mixing and stirring；
3) it is last, foaming agent and foam stabilizer are added by proportioning, it is thoroughly mixed again uniformly, by the solution being well mixed
Foamed by foam maker according to 1: 1～2 ratio with air, low density foam resin sand control agent is obtained.
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
The solid sand of sandstone oil reservoir sand output well, it is 40～150 DEG C to adapt to formation temperature.
It is currently preferred, by sand liquid mass ratio 4:The sand grains of 1 cementing 20～120 mesh, after solidification 108h, consolidation rock core resists
Compressive Strength is 5.2～7.7MPa, and consolidation core permeability is 1.1～3.5 μm2。
The present invention solid sand be applied to common straight well sand control, horizontal well, high angle hole, the chemical sand control of irregular borehole or
Secondary sand control after mechanical sand control failure.
Sand in sand liquid mass ratio of the present invention refers to quartz sand, and liquid refers to foamed resin sand control system.
Gas of the present invention is nitrogen.
Water of the present invention is running 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, gained consolidation rock core tool with formation fluid
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 up of cementing agent, foaming agent, foam stabilizer, curing agent and coupling agent
The solid sand body system of foam has the advantages that at normal temperatures density is low, foaming properties are good and the big and solid sand effect of consolidation strength is good, can be cementing
Agent is directly injected into underground and carries out consolidation sand grains, and sand control agent is with low cost, preparation process is simple and construction safety；Not only can expire
Foot reduces formation damage with thin layer, the sand control requirement of Extra-fine sand interval and effect, enhancing sand control intensity is improved；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 because molecular structure contains, compared with linear structure urea-formaldehyde resin
There is higher consolidation strength and thermal stability.Melamine resin belongs to one kind of amino resins, because it has necessarily
Water solubility, by introducing water miscible foaming agent and foam stabilizer, formed and a kind of there is low-density foamed resin system.Trimerization
Cyanamide formaldehyde resin curing reaction occurs mainly in methylol (- CH2OH the contracting) and between methylol, methylol and reactive hydrogen etc.
Close.Wherein, the condensation between methylol is based on the ehter bond that generates.In resin curing process, due to fuel factor, the ether in resin
Key is decomposed.And the participation of faintly acid curing agent, the curing rate of resin not only can be accelerated, and improve consolidating for resin
Change degree.The present invention selects coupling agent for silane resin acceptor kh-550, i.e. r- amine propyl-triethoxysilicane, its media-resistant ability
By force, Applicable temperature scope is wide, and stable chemical nature can greatly enhance the solid sand effect of foamed resin system.It is anti-that it passes through hydrolysis
First silanol should be obtained, the poly- first silanol that final condensation dehydration is obtained plays significant coupling to sand-fixating agent and sand grains, it
Hydroxyl can form hydrogen bond, group in addition and sand-fixating agent and link together with sand grain surface hydroxyl, 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 sum, the solid sand body system of foam of the invention has at normal temperatures that density is low, foaming properties are good and consolidation strength
The advantages of big and solid sand effect is good.
The technical characterstic of the present invention：
1st, 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, is also adapted to secondary anti-after the failure of horizontal well, high angle hole, the chemical sand control of irregular borehole and mechanical sand control
Sand.
2nd, prepared by low density foam resin sand control agent of the invention and construction technology is simple, and industrial rank raw material sources are wide
It is general, can obtain in oil-water well chemical sand control field good and be widely applied.
Description of the drawings
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, specific embodiment is exemplified below, but institute's protection domain of the present invention is not limited only to this.
Furane resins, Lauxite, unsaturated-resin are prior art, and market is buied.
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 normal temperature
Apparent density is 0.558-0.634g/cm under (25 DEG C)3, its raw material components and its percentage by weight 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 for being uniformly dissolved, melamino-formaldehyde tree is obtained
Lipoprotein solution；
2) curing agent and coupling agent are added in melamine resin solution by proportioning, mixes 3min (rotating speeds
For 600r/min)；
3) it is last, foaming agent and foam stabilizer are added by proportioning, it is thoroughly mixed again uniformly, by the solution being well mixed
Foamed by foam maker, low density foam resin sand control agent is obtained.
Gained low density foam resin sand control agent apparent density test case：Under the conditions of normal temperature (25 DEG C), the foamed resin
Sand control agent apparent density is 0.558-0.634g/cm3, excellent foaming properties are presented, and have with formation fluid good
Compatibility.
Embodiment 2
With the low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well described in embodiment 1, no
It is with part：
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%.
Preparation method is with embodiment 1.
Embodiment 3
With the low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well described in embodiment 1, no
It is with part：
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%.
Preparation method is with embodiment 1.
Embodiment 4
With the low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well described in embodiment 1, no
It is with part：
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%.
Preparation method is with embodiment 1.
Experimental example 1
1st, solid sand test method：It is 100g to measure quartz sand quality, is insertedGlass tube in, inject water
Sand surface is soaked, it is then injected into the amino resins foam system of 1PV, glass tube is placed in into temperature 50 C, pressure 5MPa
Solidify 108h in closed container, take out glass tube and be cooled to room temperature, take out consolidation rock core and polish its end face, to the rock core for consolidating
Compression strength and permeability are measured.
By the solid grittiness energy comprehensive evaluation result of the low density foam resin sand control agent of embodiment 1：Such as table 1, by sand liquor ratio 4:1
The sand grains of cementing 20～120 mesh, consolidates rock core compression strength for 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.
Impact of the different sand grains particle diameters of table 1 to solid grittiness energy
| Sand footpath, 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 |
2nd, gained low density foam resin sand control agent solidification temperature test case：Compare 1 by sand:The sand of 4 cementing 40～60 mesh
Grain, 30～90 DEG C of solidification temperature scope solidifies 108h, and to investigate adaptability of the resin system to formation temperature, experimental result is shown in
Fig. 1.
As seen from Figure 1 when temperature is more than 40 DEG C, consolidation rock core compression strength tends towards stability, and compression strength is all higher than
5MPa.Foamed resin sand control system is applied to stratum of the formation temperature more than 40 DEG C, can solidify to form necessarily 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 normal 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, its consolidation rock core compression strength consolidated sand strength is less than 4Mpa, permeability
1.57～2.83 μm2；Furane resins sand control system, its consolidation rock core compression strength is more than 5Mpa, but permeability be only 0.7～
1.3μm2；Lauxite sand control system, its consolidation rock core compression strength is 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 normal temperature
Apparent density is 0.558-0.634g/cm under (25 DEG C)3, its raw material components and its percentage by weight 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%.
2. the low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well according to claim 1,
Characterized in that, described cementing agent is melamine resin powder and water (1～3) in mass ratio:5 are mixed to prepare trimerization
Cyanamide formaldehyde resin solution；Preferably, described cementing agent is melamine resin powder and water in mass ratio 2:5 mixing
Prepared melamine resin solution.
3. the low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well according to claim 1,
Characterized in that, the foaming agent is anionic surfactant；Preferably, the foaming agent is lauryl sodium sulfate
(SDS)。
4. the low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well according to claim 1,
Characterized in that, the foam stabilizer is grade oil hydroxymethyl cellulose (CMC), purity>95%；Preferably, the foam stabilizer is
The high viscous hydroxymethyl cellulose (HV-CMC) of grade oil.
5. the low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well according to claim 1,
Characterized in that, the curing agent is faintly acid curing agent；Preferably, the curing agent is ammonium chloride；The coupling agent is silicon
Alkane coupling agent KH-550.
6. the low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well according to claim 1,
Characterized in that, its raw material components and its percentage by weight 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%；Preferably, raw material components and its percentage by weight composition are as follows：
Cementing agent 98.25%, foaming agent 0.5%, foam stabilizer 1.0%, curing agent 0.05%, coupling agent 0.2%.
7. the low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well according to claim 1,
Characterized in that, its raw material components and its percentage by weight 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 suitable for sand producing in unconsolidated sandstone reservoir horizontal well described in claim 1
Method, including step is as follows：
1) melamine resin powder is added in water, is sufficiently stirred for being uniformly dissolved, melamine resin is obtained molten
Liquid；
2) curing agent and coupling agent are added in melamine resin solution by proportioning, mixing and stirring；
3) it is last, foaming agent and foam stabilizer are added by proportioning, it is thoroughly mixed again uniformly, by the solution being well mixed and sky
Gas is foamed according to 1: 1～2 ratio by foam maker, and low density foam resin sand control agent is obtained.
9. the low density foam resin sand control agent suitable for sand producing in unconsolidated sandstone reservoir horizontal well described in claim 1 should
With for the solid sand of sand producing in unconsolidated sandstone reservoir well, it is 40～150 DEG C to adapt to formation temperature.
10. application according to claim 9, it is characterised in that by sand liquid mass ratio 4:The sand grains of 1 cementing 20～120 mesh,
After solidification 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 applied to two after the failure of common straight well sand control, horizontal well, high angle hole, the chemical sand control of irregular borehole or mechanical sand control
Secondary sand control.
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| 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 |
| 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 |
| CN112920786A (en) * | 2021-02-01 | 2021-06-08 | 成都理工大学 | Composite sand control agent with high permeability retention rate |
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| 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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| CN111022011A (en) * | 2019-12-03 | 2020-04-17 | 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 |
| CN112920786A (en) * | 2021-02-01 | 2021-06-08 | 成都理工大学 | Composite sand control agent with high permeability retention rate |
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| 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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