CN113105877A - Modified natural cellulose fiber, preparation method thereof and water invasion resistant well cementation cement slurry - Google Patents
Modified natural cellulose fiber, preparation method thereof and water invasion resistant well cementation cement slurry Download PDFInfo
- Publication number
- CN113105877A CN113105877A CN202110401187.6A CN202110401187A CN113105877A CN 113105877 A CN113105877 A CN 113105877A CN 202110401187 A CN202110401187 A CN 202110401187A CN 113105877 A CN113105877 A CN 113105877A
- Authority
- CN
- China
- Prior art keywords
- cellulose fibers
- water
- natural cellulose
- cement slurry
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 239000004568 cement Substances 0.000 title claims abstract description 85
- 229920003043 Cellulose fiber Polymers 0.000 title claims abstract description 84
- 239000002002 slurry Substances 0.000 title claims abstract description 55
- 230000009545 invasion Effects 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 33
- 239000006185 dispersion Substances 0.000 claims abstract description 15
- 238000000498 ball milling Methods 0.000 claims abstract description 12
- 239000003129 oil well Substances 0.000 claims abstract description 12
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 19
- 239000012153 distilled water Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 5
- 239000010431 corundum Substances 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000011324 bead Substances 0.000 claims description 2
- 238000007580 dry-mixing Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000010881 fly ash Substances 0.000 claims description 2
- YIBPLYRWHCQZEB-UHFFFAOYSA-N formaldehyde;propan-2-one Chemical group O=C.CC(C)=O YIBPLYRWHCQZEB-UHFFFAOYSA-N 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000011863 silicon-based powder Substances 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical group CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 2
- 238000003828 vacuum filtration Methods 0.000 claims description 2
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims 1
- 229920006322 acrylamide copolymer Polymers 0.000 claims 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims 1
- 239000013530 defoamer Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000008719 thickening Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000005465 channeling Effects 0.000 description 3
- 239000008398 formation water Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002715 modification method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229920000536 2-Acrylamido-2-methylpropane sulfonic acid Polymers 0.000 description 1
- XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- YIKJVGZVJVPVPA-JSDYAFQMSA-N OC(=O)\C=C/C(=O)OS(=O)(=O)C=CC1=CC=CC=C1 Chemical compound OC(=O)\C=C/C(=O)OS(=O)(=O)C=CC1=CC=CC=C1 YIKJVGZVJVPVPA-JSDYAFQMSA-N 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 description 1
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 description 1
- FSAJWMJJORKPKS-UHFFFAOYSA-N octadecyl prop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C=C FSAJWMJJORKPKS-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011158 quantitative evaluation Methods 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Images
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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a modified natural cellulose fiber, a preparation method thereof and water invasion resistant well cementing cement slurry. A method of modifying natural cellulose fibers comprising: the method comprises the steps of pretreating natural cellulose fibers by using a sodium hydroxide solution, combining a planetary ball mill with a vertical corundum-alumina ball milling tank, and ball milling the pretreated natural cellulose fibers, wherein the natural cellulose fibers comprise 100 parts by mass of total high-sulfate-resistance G-grade oil well cement and an admixture, 1.0-5.0 parts by mass of a fluid loss additive, 0.2-2.0 parts by mass of a dispersing agent, 0-1.0 part by mass of a retarder, 0.1-0.5 part by mass of modified cellulose fibers, 0.05-0.1 part by mass of a defoaming agent and 40-50 parts by mass of water. The well cementation cement slurry system has the advantages of cleanness, environmental protection, low cost, no dispersion in water, good water invasion resistance, high early compressive strength, adjustable thickening time and the like.
Description
Technical Field
The invention belongs to the field of oil and gas well cementing materials, and particularly relates to a modified natural cellulose fiber, a preparation method thereof and water invasion resistant well cementing cement slurry.
Background
The old oil field in China enters the middle and later development stages successively, and due to long-term water injection development, the old oil field faces the outstanding problems of disordered landing layer pressure systems, high formation water content, low crude oil recovery rate and the like. In order to stabilize the yield of the old oil field, the current common and effective mode is to drill a new encryption adjusting well in the old oil field to optimize the injection-production mode of the old oil field. However, in well cementing engineering of a regulation well, due to geological characteristics such as disorder of a pressure system, high formation water content and the like and the weight loss behavior of the cementing slurry in the solidification process, formation water is easy to invade into the annular cement slurry, so that the performance of the cement slurry is deteriorated, and the cementing quality of a second interface between the cement slurry and formation rock is reduced. Therefore, in recent years, industry researchers have conducted a great deal of research on how to improve the water invasion resistance of the cement slurry system for well cementing.
For example, Zhangguo et al established a quantitative evaluation method of the water invasion resistance of well cementation cement slurry by a method of washing the cement slurry with water flow and testing the conductivity of the water flow (Zhangguo, Kingjinshan, Kingjinxing, etc.. evaluation device and method of the water invasion resistance of well cementation cement slurry in the process of waiting to set [ P ]. CN107167499A, 2017); ruhaichuan and the like prepare a water channeling preventing material for well cementation (ruhaichuan, liu courage, zhang weibin and the like) by mixing inorganic materials such as sepiolite and the like and copolymers such as styrene sulfonic acid-maleic anhydride and the like, a water channeling preventing material for well cementation and a preparation method [ P ]. CN106701048A, 2017); liu Jing Li et al, by using N, N dimethylacrylamide monomer, acrylamide monomer, 2-acrylamido-2-methylpropanesulfonic acid and acrylic acid monomer to prepare water invasion resisting regulator, and using the regulator to prepare a temperature-resistant water invasion resisting gel cement slurry system (Liu Jing Li Chang, Lily Chang, Liqiang, temperature-resistant water invasion resisting gel cement slurry [ P ]. CN107352862A, 2017); an oil well cement anti-dispersion flocculant is synthesized by Wangjian Yao and the like in a free radical polymerization way, and can meet the requirements that cement paste is not isolated and not dispersed under the action of water scouring at 80 ℃ (Wangjian Yao, formerly Jian, Sun Fu, and the like, an oil well cement anti-dispersion flocculant [ J ] a drilling fluid and a completion fluid, 2018,35(2): 90-93); licheng and the like synthesize a water-soluble hydrophobic association polymer for well cementing cement slurry by using 2-acrylamide-2-methylpropanesulfonic acid, acrylamide, maleic anhydride and octadecyl acrylate as monomers, and the water-soluble hydrophobic association polymer can obviously improve the water invasion resistance of the well cementing cement slurry (Licheng, Zhaojian, Liuhuan. the synthesis and performance of a hydrophobic association polymer channeling inhibitor for dynamic pressure well cementing [ J ] synthetic chemistry 2020,28(8): 722) 727.). The comparative analysis of the research results shows that in the well cementation cement slurry, the anti-dispersion flocculant and the hydrophobic association polymer are adsorbed on the surfaces of cement particles to enable the cement slurry to form a flocculation structure, so that the water invasion resistance of the cement slurry is improved, but the introduction of the polymers can slow down the hydration rate of the well cementation cement, so that the early mechanical property of the well cementation cement is reduced; meanwhile, the synthesis process of the materials is complex, and the cost of the well cementation cement slurry is increased to a certain extent. Therefore, the development of a low-cost water invasion resistant treating agent which can enhance the water invasion resistance of well cementation cement slurry and improve the early mechanical property of the well cementation cement slurry is urgently needed to improve the cementing quality of a second interface of well cementation of an old oil field adjusting well and guarantee the packing quality of a cement ring layer and the development benefit of the oil field.
The natural cellulose fiber is universally existed in various plants, has the advantages of reproducibility, cleanness, low cost and the like, contains a large amount of hydroxyl in the molecular structure, and can enable the cellulose fiber and cement particles to generate adsorption action through modes of polyvalent metal ion bridging, hydrogen bonds and the like; meanwhile, the physical bridging effect of the fibers in the cement paste can promote the cement paste to form a flocculation structure, and the cement paste has great potential for improving the water invasion resistance of the well cementation cement paste. However, natural cellulose fibers tend to agglomerate in cement slurries and are not easily dispersed due to their large length and diameter. Therefore, the invention establishes a natural cellulose fiber modification method suitable for well cementation cement slurry, and prepares a water invasion resistant cement slurry system which is non-dispersible in water, strong in water invasion resistance and good in mechanical property based on the modified cellulose fiber.
Disclosure of Invention
The invention aims to prepare modified natural cellulose fiber suitable for oil-gas well cementing cement slurry by a modification method, and prepare a water-invasion-resistant well cementing cement slurry system with good water-invasion resistance and early mechanical property by using the agent.
The preparation method of the modified natural cellulose fiber comprises the following steps:
(1) preparing 0.1mol/L sodium hydroxide solution, heating the solution to 60 ℃, and adding a part of untreated natural cellulose fibers into the sodium hydroxide solution, wherein the mass ratio of the solution to the natural cellulose fibers is 20: 1. Stirring for 5 minutes at the rotating speed of 4000r/min by using a constant-speed stirrer manufactured by Shenyang aerospace university application technology research; utilizing a circulating water type multipurpose vacuum pump to be matched with quick filter paper, filtering the stirred natural cellulose fiber, soaking the natural cellulose fiber by utilizing distilled water, and performing vacuum filtration twice to obtain the pretreated natural cellulose fiber;
(2) placing the pretreated natural cellulose fibers in a beaker, adding a certain amount of distilled water, wherein the mass ratio of the distilled water to the pretreated natural cellulose fibers is 20:1, and stirring with a glass rod to completely disperse the pretreated natural cellulose fibers in the distilled water;
(3) pouring distilled water containing natural cellulose fibers into a vertical corundum-alumina ball milling tank, putting corundum milling balls into the ball milling tank, ball milling the pretreated natural cellulose fibers at a set rotating speed for a set time, and adjusting the rotating speed and the ball milling time of a planetary ball mill according to the size of the required cellulose fibers;
(4) pouring out the ball-milled natural cellulose fibers, separating the grinding balls from the natural cellulose fiber solution, filtering the matched medium-speed filter paper by using a water-circulating multi-purpose vacuum pump, filtering the ball-milled natural cellulose fibers, and collecting the filtered natural cellulose fibers to obtain the modified natural cellulose fibers.
The modified natural cellulose fiber obtained above is used to prepare water invasion resistant well cementation cement slurry, which comprises the following components in parts by weight: 100 parts of high sulfate-resistant G-grade oil well cement and admixture, 1.0-5.0 parts of fluid loss additive, 0.2-2.0 parts of dispersant, 0-1.0 part of retarder, 0.1-0.5 part of modified cellulose fiber, 0.05-0.1 part of defoaming agent and 40-50 parts of water.
Further, the admixture is one or a mixture of any two of slag, fly ash, micro-silicon, quartz sand, silicon powder and glass beads.
Further, the fluid loss agent is a copolymer of 2-acrylamide-2-methylpropanesulfonic acid, acrylamide and acrylic acid, and is purchased from Weiliang chemical Co., Ltd;
further, the dispersant is an acetone-formaldehyde polycondensate purchased from Weihui chemical Co., Ltd;
further, the retarder is a blend of polyhydroxycarboxylic acid and sulfonate;
further, the defoaming agent is tributyl phosphate, purchased from urban Congon chemical Co., Ltd;
the preparation method of the water invasion resistant well cementation cement slurry comprises the following steps:
weighing 100 parts by weight of high sulfate-resistant G-grade oil well cement and an admixture, 1.0-5.0 parts by weight of a fluid loss agent, 0.2-2.0 parts by weight of a dispersant, 0-1.0 part by weight of a retarder and 0.1-0.5 part by weight of modified cellulose fibers, and dry-mixing the solid powder into a dry mixture;
weighing 0.05-0.1 part by weight of defoaming agent, mixing the defoaming agent with 40-50 parts by weight of water, pouring the aqueous solution into a constant speed stirrer (provided by Shenyang aerospace university application and technology research institute), stirring at the rotating speed of 4000 +/-200 r/min, and pouring the dry mixture into the constant speed stirrer within 15 seconds; and then the rotating speed of the constant speed stirrer is increased to 12000 +/-500 r/min, and stirring is continued for 35 seconds, so that the water-invasion-resistant cement paste system is obtained.
The technical scheme provided by the invention is that from the viewpoint of oil well cement paste, in order to improve the water invasion resistance of a high-water-content stratum well cementation cement paste system, the water invasion resistance well cementation cement paste is developed by modifying natural renewable cellulose fibers, and has the advantages of environmental friendliness, low cost, no dispersion in water, strong water invasion resistance, excellent mechanical properties, capability of adjusting the cement paste thickening time according to construction requirements and the like.
Drawings
FIG. 1 shows the water dispersion state of a control cement slurry system;
FIG. 2 example 1 aqueous dispersion of a cement slurry system containing 1.2g of modified cellulose fibers;
FIG. 3 example 2 the water dispersion of a cement slurry system containing 1.2g of modified cellulose fibers.
Detailed Description
The technical solution of the present invention is described in detail below with reference to examples.
Control group
A cement paste system: 540G of high sulfate-resistant G-grade oil well cement, 60G of micro-silicon, 12G of fluid loss additive, 3G of dispersing agent, 0.5G of defoaming agent and 264G of water.
TABLE 1 comparative group Cement mortar System Performance test results
FIG. 1 shows the water dispersion state of the cement slurry system of the control group.
At normal temperature, 5mL of newly-prepared control group cement slurry is injected into a beaker containing 150mL of clear water by using an injector, the cement slurry is dispersed in the beaker water, and the beaker is turbid by using the clear water.
Example 1
Modification of natural cellulose fiber:
preparing 800ml of 0.1mol/L sodium hydroxide solution, heating to 60 ℃, weighing 40g of natural cellulose fibers, placing the natural cellulose fibers in the sodium hydroxide solution, and stirring for 5 minutes at the rotating speed of 4000r/min by using a constant-speed stirrer; fast filter paper is matched with a water-circulating type multipurpose vacuum pump to filter a sodium hydroxide solution; and soaking and cleaning the natural cellulose fibers twice by using distilled water, and then putting the pretreated natural cellulose fibers into the distilled water (the mass ratio of the distilled water to the natural cellulose fibers is 20: 1). Then, a planetary ball mill is matched with a vertical corundum ball milling tank, and the pretreated natural cellulose fiber solution is ball milled for 60 minutes at the rotating speed of 300 r/min; and then filtering the ball-milled natural cellulose fiber by using a circulating water type multipurpose vacuum pump matched with medium-speed filter paper to obtain the modified natural cellulose fiber.
Water intrusion resistant cement slurry system 1:
540G of high-sulfate-resistance G-grade oil well cement, 60G of micro-silicon, 12G of fluid loss additive, 3G of dispersing agent, 0.5G of defoaming agent and 264G of water, wherein the mass is the modified natural cellulose fiber in the table 2.
Table 2 example 1 performance test results for water intrusion resistant cement slurry system 1
FIG. 2 is a graph of the water dispersion of example 2 with a modified cellulose fiber cement slurry system containing 1.2 g.
At normal temperature, 5mL of a newly-prepared water-invasion-resistant cement paste system 1 (containing 1.2g of modified natural cellulose fibers) is injected into a beaker containing 150mL of clear water by using an injector, the water-invasion-resistant cement paste system 1 (containing 1.2g of modified natural cellulose fibers) has no obvious dispersion phenomenon in the water, and the clear water in the beaker is transparent.
Example 2
Modification of natural cellulose fiber:
preparing 800ml of 0.1mol/L sodium hydroxide solution, heating to 60 ℃, weighing 40g of natural cellulose fibers, placing the natural cellulose fibers in the sodium hydroxide solution, and stirring for 5 minutes at the rotating speed of 4000r/min by using a constant-speed stirrer; fast filter paper is matched with a water-circulating type multipurpose vacuum pump to filter a sodium hydroxide solution; and soaking and cleaning the natural cellulose fibers twice by using distilled water, and then putting the pretreated natural cellulose fibers into the distilled water (the mass ratio of the distilled water to the natural cellulose fibers is 20: 1). Then, a planetary ball mill is matched with a vertical corundum ball milling tank, and the pretreated natural cellulose fiber solution is ball milled for 60 minutes at the rotating speed of 400 r/min; and then filtering the ball-milled natural cellulose fiber by using a circulating water type multipurpose vacuum pump matched with medium-speed filter paper to obtain the modified natural cellulose fiber.
Water intrusion resistant cement slurry system 2:
540G of high-sulfate-resistance G-grade oil well cement, 60G of micro-silicon, 12G of fluid loss additive, 3G of dispersing agent, 0.5G of defoaming agent and 264G of water, wherein the mass is the modified natural cellulose fiber in the table 3.
Table 3 example 2 water intrusion resistant cement slurry system 2 performance test results
FIG. 3 is a graph of the water dispersion of example 2 with a modified cellulose fiber cement slurry system containing 1.2 g.
At normal temperature, 5mL of a newly-prepared water-invasion-resistant cement paste system 2 (containing 1.2g of modified natural cellulose fibers) is injected into a beaker containing 150mL of clear water by using an injector, the water-invasion-resistant cement paste system 2 (containing 1.2g of modified natural cellulose fibers) has no obvious dispersion phenomenon in the water, and the clear water in the beaker is transparent. Therefore, the natural cellulose fiber can better inhibit the dispersion phenomenon of cement slurry in water after ball milling modification, and the water invasion resistance of the well cementation cement slurry can be improved by utilizing the modified natural cellulose fiber.
Example 3
Water intrusion resistant cement slurry system 3: to verify the effect of the retarder on the water invasion resistant cement slurry system, the following experiments were performed.
540G of high-sulfate-resistance G-grade oil well cement, 60G of micro-silicon, 12G of fluid loss additive, 3G of dispersing agent, 1.2G (300r/min) of modified natural cellulose fiber, 0.5G of retarder, 0.5G of defoaming agent and 264G of water, wherein the mass is shown in the table 4.
Table 4 example 3 water intrusion resistant cement slurry system 3 performance test results
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The preparation method of the modified natural cellulose fiber is characterized by comprising the following steps:
1) preparing 0.1mol/L sodium hydroxide solution, heating the solution to 60 ℃, adding a part of untreated natural cellulose fibers into the sodium hydroxide solution, wherein the mass ratio of the solution to the natural cellulose fibers is 20: 1; stirring for 5 minutes at the rotating speed of 4000 r/minute by using a constant-speed stirrer; utilizing a circulating water type multipurpose vacuum pump to be matched with quick filter paper, filtering the stirred cellulose fibers, soaking the cellulose fibers in distilled water, and performing vacuum filtration twice to obtain pretreated natural cellulose fibers;
2) placing the pretreated natural cellulose fibers in a container, adding distilled water, stirring the distilled water and the fibers at a mass ratio of 20:1, and completely dispersing the treated natural cellulose fibers in the distilled water;
3) pouring the dispersion liquid into a vertical corundum alumina ball milling tank, putting corundum milling balls into the ball milling tank, and carrying out ball milling on pretreated cellulose fibers;
4) pouring out the ball-milled natural cellulose fiber solution, separating the grinding ball and the cellulose fibers, filtering the ball-milled natural cellulose fibers by using a circulating water type multipurpose vacuum pump matched with medium-speed filter paper, and collecting the cellulose fibers to obtain the modified natural cellulose fibers.
2. A modified natural cellulose fiber obtained by the production method according to claim 1.
3. The water invasion resistant well cementation cement slurry is characterized by comprising the following components in parts by weight: 100 parts of high sulfate-resistant G-grade oil well cement and admixture, 1.0-5.0 parts of fluid loss additive, 0.2-2.0 parts of dispersant, 0-1.0 part of retarder, 0.1-0.5 part of modified cellulose fiber according to claim 2, 0.05-0.1 part of defoamer and 40-50 parts of water.
4. The cement slurry for resisting water invasion and cementing according to claim 3, wherein the admixture is one or more of slag, fly ash, micro-silicon, quartz sand, silicon powder and glass beads.
5. The cement slurry for resisting water invasion according to claim 3, wherein the fluid loss agent is one or more of 2-acrylamide-2-methylpropanesulfonic acid, acrylamide and acrylic acid copolymer.
6. The cement slurry for resisting water invasion and cementing according to claim 3, wherein the dispersant is acetone-formaldehyde polycondensate.
7. The cement slurry for resisting water invasion according to claim 3, wherein the retarder is a blend of polyhydroxy carboxylic acid and sulfonate.
8. The cement slurry for resisting water invasion and cementing according to claim 3, wherein the defoaming agent is tributyl phosphate.
9. The method for preparing a cement slurry for cementing wells resistant to water invasion as claimed in any one of claims 3 to 8, comprising the following steps:
weighing high sulfate-resistant G-grade oil well cement, an admixture, a fluid loss agent, 0.2-2.0 parts by weight of a dispersant, a retarder and modified cellulose fibers according to parts by weight, and dry-mixing the solid powder into a dry mixture;
then mixing the defoaming agent into water, pouring the aqueous solution into a constant speed stirrer, stirring at the rotating speed of 4000 +/-200 r/min, and pouring the dry mixture into the constant speed stirrer within 15 seconds; and then the rotating speed of the constant speed stirrer is increased to 12000 +/-500 r/min for continuously stirring for 35 seconds, and the water invasion resistant well cementation cement slurry is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110401187.6A CN113105877A (en) | 2021-04-14 | 2021-04-14 | Modified natural cellulose fiber, preparation method thereof and water invasion resistant well cementation cement slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110401187.6A CN113105877A (en) | 2021-04-14 | 2021-04-14 | Modified natural cellulose fiber, preparation method thereof and water invasion resistant well cementation cement slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113105877A true CN113105877A (en) | 2021-07-13 |
Family
ID=76717625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110401187.6A Pending CN113105877A (en) | 2021-04-14 | 2021-04-14 | Modified natural cellulose fiber, preparation method thereof and water invasion resistant well cementation cement slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113105877A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112592118A (en) * | 2020-12-31 | 2021-04-02 | 陈海涛 | High-strength anti-settling cement paste |
| CN114516737A (en) * | 2022-03-25 | 2022-05-20 | 西南石油大学 | Water-invasion-resistant cement slurry for cementing water-bearing stratum and preparation method thereof |
| CN116409965A (en) * | 2021-12-31 | 2023-07-11 | 中国石油天然气集团有限公司 | Cement paste and related products and application thereof in well cementation of oil and gas well |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294309A (en) * | 2008-05-26 | 2008-10-29 | 东华大学 | Process for producing sisal fiber |
| CN101857800A (en) * | 2010-06-28 | 2010-10-13 | 西南石油大学 | Leaking stoppage cement slurry for well cementation and preparation method thereof |
| CN103045214A (en) * | 2013-01-16 | 2013-04-17 | 西南石油大学 | Plugging thixotropic cement paste for oil-gas well and preparation method for same |
| CN104105827A (en) * | 2012-02-10 | 2014-10-15 | 芬欧汇川集团 | Method for pretreating cellulose pulp |
| CN104136681A (en) * | 2012-02-13 | 2014-11-05 | 芬欧汇川集团 | Method and apparatus for processing fibril cellulose and fibril cellulose product |
| CN104419987A (en) * | 2013-09-06 | 2015-03-18 | 青岛三秀新科技复合面料有限公司 | Jute fiber degumming process |
| CN109837074A (en) * | 2019-03-27 | 2019-06-04 | 中国石油大学(华东) | Fluid loss additive composition and its application, water-base drilling fluid and its application |
| CN111606616A (en) * | 2020-05-20 | 2020-09-01 | 中铁二局第二工程有限公司 | Filling type plant fiber, preparation method and high-strength plastic wave-absorbing concrete |
| CN112142407A (en) * | 2020-09-27 | 2020-12-29 | 嘉华特种水泥股份有限公司 | Fiber toughness well cementing material |
| CN112174568A (en) * | 2020-09-27 | 2021-01-05 | 嘉华特种水泥股份有限公司 | Modified toughening material for well cementation |
| CN114751681A (en) * | 2022-03-18 | 2022-07-15 | 中意世兴实业(武汉)有限公司 | Permeable concrete for sidewalks and preparation method thereof |
-
2021
- 2021-04-14 CN CN202110401187.6A patent/CN113105877A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294309A (en) * | 2008-05-26 | 2008-10-29 | 东华大学 | Process for producing sisal fiber |
| CN101857800A (en) * | 2010-06-28 | 2010-10-13 | 西南石油大学 | Leaking stoppage cement slurry for well cementation and preparation method thereof |
| CN104105827A (en) * | 2012-02-10 | 2014-10-15 | 芬欧汇川集团 | Method for pretreating cellulose pulp |
| US20140374045A1 (en) * | 2012-02-10 | 2014-12-25 | Upm-Kymmene Corporation | Method for pretreating cellulose pulp |
| CN104136681A (en) * | 2012-02-13 | 2014-11-05 | 芬欧汇川集团 | Method and apparatus for processing fibril cellulose and fibril cellulose product |
| CN103045214A (en) * | 2013-01-16 | 2013-04-17 | 西南石油大学 | Plugging thixotropic cement paste for oil-gas well and preparation method for same |
| CN104419987A (en) * | 2013-09-06 | 2015-03-18 | 青岛三秀新科技复合面料有限公司 | Jute fiber degumming process |
| CN109837074A (en) * | 2019-03-27 | 2019-06-04 | 中国石油大学(华东) | Fluid loss additive composition and its application, water-base drilling fluid and its application |
| CN111606616A (en) * | 2020-05-20 | 2020-09-01 | 中铁二局第二工程有限公司 | Filling type plant fiber, preparation method and high-strength plastic wave-absorbing concrete |
| CN112142407A (en) * | 2020-09-27 | 2020-12-29 | 嘉华特种水泥股份有限公司 | Fiber toughness well cementing material |
| CN112174568A (en) * | 2020-09-27 | 2021-01-05 | 嘉华特种水泥股份有限公司 | Modified toughening material for well cementation |
| CN114751681A (en) * | 2022-03-18 | 2022-07-15 | 中意世兴实业(武汉)有限公司 | Permeable concrete for sidewalks and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| M.S. SREEKALA 等: "Water sorption in oil palm fiber reinforced phenol formaldehyde composites", 《APPLIED SCIENCE AND MANUFATURING》 * |
| 张智峰: "纤维素改性研究进展", 《化工进展》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112592118A (en) * | 2020-12-31 | 2021-04-02 | 陈海涛 | High-strength anti-settling cement paste |
| CN116409965A (en) * | 2021-12-31 | 2023-07-11 | 中国石油天然气集团有限公司 | Cement paste and related products and application thereof in well cementation of oil and gas well |
| CN114516737A (en) * | 2022-03-25 | 2022-05-20 | 西南石油大学 | Water-invasion-resistant cement slurry for cementing water-bearing stratum and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113105877A (en) | Modified natural cellulose fiber, preparation method thereof and water invasion resistant well cementation cement slurry | |
| US4036660A (en) | Methods of using cementing compositions having improved flow properties, containing sulfonated copolymers of styrene-maleic anhydride | |
| CN112011315B (en) | Inorganic/polymer composite material plugging agent for ultrahigh-temperature-resistant oil-based drilling fluid and preparation method and application thereof | |
| CA1050256A (en) | Well cementing composition having improved flow properties and method of use | |
| US4011909A (en) | Method of using cementing composition having improved flow properties | |
| US3952805A (en) | Well cementing method using a composition having improved flow properties, containing sulfonated copolymers of styrene-maleic anhydride | |
| Ma et al. | Preparation and performance of a lignosulfonate–AMPS–itaconic acid graft copolymer as retarder for modified phosphoaluminate cement | |
| NO305238B1 (en) | Burn cement mixture with improved properties and method for cementing an underground zone | |
| CN114591718B (en) | High-temperature-resistant chemical wall-fixing agent for stabilizing gravel layer well wall drilling fluid and preparation method and application thereof | |
| CN109824302B (en) | Water plugging composition, water plugging agent and preparation method thereof | |
| CN111908848A (en) | Cement slurry for well cementation and preparation method and application thereof | |
| Nehdi et al. | Statistical modelling of the microfiller effect on the rheology of composite cement pastes | |
| US3943083A (en) | Well cementing composition containing polymaleic anhydride and having improved flow properties | |
| CN103589409A (en) | Oil well cement lightening agent, and preparation method and applications thereof | |
| CN112625665A (en) | Fly ash suspension stable plugging profile control agent and preparation method thereof | |
| Qiao et al. | Effects of Adsorption Group and Molecular Weight of Viscosity-Modifying Admixtures on the Properties of Cement Paste | |
| CN117326825A (en) | Modified well cementation cement paste and preparation method and application thereof | |
| CN113429163B (en) | Cement composition for well cementation operation, cement slurry system and preparation method thereof | |
| CA3226592A1 (en) | Dry grinding of mineral materials, ground mineral materials, and their use in construction materials | |
| CN112031722A (en) | Dispersed oil sludge profile control system and preparation method thereof | |
| CN107555861B (en) | Well cementation oil absorption type cement slurry and preparation method thereof | |
| CN110761738A (en) | Method for improving cementing strength of well cementation interface by solidifying oil-based drilling fluid filter cake | |
| CN115353330B (en) | Ultra-high temperature resistant well cementation cement system with excellent pumping performance and preparation method thereof | |
| Zeng et al. | A new type of low density cement slurry suitable for sandstone formation | |
| CN112390659A (en) | Cement paste system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210713 |
|
| RJ01 | Rejection of invention patent application after publication |