CN102585788A - Supersaturated sodium chloride cement slurry system for well cementation - Google Patents
Supersaturated sodium chloride cement slurry system for well cementation Download PDFInfo
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- CN102585788A CN102585788A CN2012100182689A CN201210018268A CN102585788A CN 102585788 A CN102585788 A CN 102585788A CN 2012100182689 A CN2012100182689 A CN 2012100182689A CN 201210018268 A CN201210018268 A CN 201210018268A CN 102585788 A CN102585788 A CN 102585788A
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- sodium
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- 239000004568 cement Substances 0.000 title abstract description 29
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title abstract description 18
- 239000002002 slurry Substances 0.000 title abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003469 silicate cement Substances 0.000 claims abstract description 13
- 239000013505 freshwater Substances 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 claims description 31
- 239000004570 mortar (masonry) Substances 0.000 claims description 20
- 230000008961 swelling Effects 0.000 claims description 18
- 238000013508 migration Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- 239000004575 stone Substances 0.000 claims description 12
- 239000005864 Sulphur Substances 0.000 claims description 11
- IRLPACMLTUPBCL-KQYNXXCUSA-N 5'-adenylyl sulfate Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP(O)(=O)OS(O)(=O)=O)[C@@H](O)[C@H]1O IRLPACMLTUPBCL-KQYNXXCUSA-N 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 8
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- 229920005601 base polymer Polymers 0.000 claims description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000002923 metal particle Substances 0.000 claims description 7
- 229960004418 trolamine Drugs 0.000 claims description 7
- 229910052595 hematite Inorganic materials 0.000 claims description 6
- 239000011019 hematite Substances 0.000 claims description 6
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 5
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 5
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical group CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 claims description 5
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 5
- 230000002708 enhancing effect Effects 0.000 claims description 5
- YKXCWZVUWWQSAV-BTVCFUMJSA-N (2r,3s,4r,5r)-2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O YKXCWZVUWWQSAV-BTVCFUMJSA-N 0.000 claims description 4
- QGJDXUIYIUGQGO-UHFFFAOYSA-N 1-[2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyl]pyrrolidine-2-carboxylic acid Chemical compound CC(C)(C)OC(=O)NC(C)C(=O)N1CCCC1C(O)=O QGJDXUIYIUGQGO-UHFFFAOYSA-N 0.000 claims description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 239000000292 calcium oxide Substances 0.000 claims description 4
- 235000012255 calcium oxide Nutrition 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 229960001866 silicon dioxide Drugs 0.000 claims description 4
- 235000011006 sodium potassium tartrate Nutrition 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 abstract description 11
- 239000011780 sodium chloride Substances 0.000 abstract description 11
- 230000008719 thickening Effects 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 abstract description 4
- 239000010440 gypsum Substances 0.000 abstract description 4
- 229910052602 gypsum Inorganic materials 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 3
- 230000005465 channeling Effects 0.000 abstract 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 238000011109 contamination Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000003755 preservative agent Substances 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 239000011440 grout Substances 0.000 description 23
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 208000034189 Sclerosis Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 235000019739 Dicalciumphosphate Nutrition 0.000 description 1
- 229910004283 SiO 4 Inorganic materials 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 description 1
- NEFBYIFKOOEVPA-UHFFFAOYSA-K dicalcium phosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])([O-])=O NEFBYIFKOOEVPA-UHFFFAOYSA-K 0.000 description 1
- 229940038472 dicalcium phosphate Drugs 0.000 description 1
- 229910000390 dicalcium phosphate Inorganic materials 0.000 description 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000011405 expansive cement Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- -1 hydroxyethyl amine Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910003455 mixed metal oxide Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000037048 polymerization activity Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
Abstract
The invention relates to a supersaturated sodium chloride cement slurry system for well cementation, and belongs to the technical field of cement slurry for well cementation in petroleum drilling. The supersaturated sodium chloride cement slurry system comprises highly sulfur-resisting grade G silicate cement, a weighting agent, a salt resistant water-loss control agent, a preserving agent, a setting retarder, fresh water, sodium chloride, an enhanced channeling preventing agent and an expanding agent. The highly sulfur-resisting grade G silicate cement is used as a base, the property instability and the metastable state property of the supersaturated solution are utilized, and other raw materials are added proportionally, so that the supersaturated sodium chloride cement slurry system has good salt stain resistance and calcium contamination resistance, is simple and convenient in on-site construction, has a good well cementation effect, can meet the well cementation requirements in complex conditions such as salt-gypsum layer, high pressure deep well salt-gypsum layer and super-thick salt-gypsum layer and the like, is convenient in cementing operation, and has a remarkable oil gas water channeling prevention effect, and the density of the supersaturated sodium chloride cement slurry system can be optionally regulated in a range of 1.90-2.40g/cm<3>. The supersaturated sodium chloride cement slurry system overcomes the defect that the thickening time of the supersaturated salt water cement slurry is difficult to control, and can meet the well cementation requirements in various complex conditions.
Description
Technical field
The present invention relates to a kind of supersaturation sodium-chlor well cementing mortar architecture, belong to the petroleum drilling well cementation and use the grout technical field.
Background technology
Adopting heavy casing+grout combination well cementation, is necessary, the conventional well cementation means of petroleum drilling.At saline bed when particularly complicated well sections such as deep-well saline bed, huge thick saline bed are carried out well cementing operation; Use conventional grout to have following problem: the first is in the cementing stage, because the concentration difference effect, the salt in the stratum is dissolved in the grout can make grout thickening or gelling; Simultaneously; The salt deposit dissolving can enlarge well, causes the borehole wall irregular, influences drilling operation; It two is in the grout sclerosis stage, and the lasting dissolving of stratum salt had both influenced the hardening rate of grout, influences the intensity after its sclerosis again, and between cement mantle and saline bed, also will form the solvability crack, possibly scurry for subterranean oil gas is waterborne passage is provided; It three is because the salt dissolution phenomena is what continue to take place; The cement strength that conventional grout forms is low; Second-rate with formation cementation can not effectively be resisted the outer crowded power that the creep because of the salt deposit stratum causes and cause the heavy casing distortion, can't carry out later borehole operation; Even heavy casing takes place by bad break or crowded ruining, shorten the work-ing life of oil gas well.It four is that the cement stone that conventional grout forms does not possess anti-corrosion capability; When the ion generation IX in ionogen in the local water and the cement stone; At first corrosive water mudstone, and then corrosion heavy casing, the heavy casing and the cement stone of bottom can be eroded fully when serious.
Summary of the invention
The objective of the invention is to, provide a kind of and have that excellent anti-salt is dirty invades ability with anticalcium, have higher-strength and bonding capacity, can effectively avoid erosion, prolongation oil gas well work-ing life heavy casing; Guarantee effective sealing on complicated saline bed well section sleeve pipe stratum, it is effective, easy to use to cement the well; Solve that conventional grout is not corrosion-resistant when the construction of complicated saline bed, bonding capacity is poor, gel strength slower development, early strength are low, can not effectively resist the supersaturation sodium-chlor well cementing mortar architecture that the outer crowded power that causes because of the salt deposit formation creep causes the heavy casing problem on deformation.
The present invention realizes above-mentioned purpose by the following technical solutions:
A kind of supersaturation sodium-chlor well cementing mortar architecture, it is characterized in that: it is made up of the raw material of following weight part:
100 parts of high anti-sulphur G level silicate cements
0～200 part of weighting agent
7～15 parts of anti-salt water retainings
6～15 parts of sanitass
0.5～2 part of retardant
38～60 parts of fresh water
38～40 parts in sodium-chlor
Strengthen 0.2～1 part of anti-migration agent
0.25～1 part of swelling agent.
Described anti-salt water retaining is: N; A kind of in N-DMAA (NNDMA), vinylformic acid/2-acrylic amide-2-methyl propane sulfonic acid (AA/AMPS base polymer), the acrylic amide/2-acrylic amide-2-methyl propane sulfonic acid (AM/AMPS base polymer), the relative molecular weight of polymkeric substance is 100,000～2,500,000.
Described weighting agent is a ground hematite, and its staple is Fe
2O
3, its particle size range is 1200 order to 200 orders, its density is 4.8～5.1 g/cm
3
Described sanitas is 200nm ultrafine high activity silicon-dioxide (SiO
2) particulate and water presses the suspension liquid that the mixed of 1:1 forms.
Described retardant is the glucose sodium saccharate, sodium glucoheptonate, Seignette salt, boric acid, a kind of in the organophosphate.
Described enhancing anti-migration agent is the mixture that a kind of and Repone K in trolamine, diethylolamine, the tri-isopropanolamine forms by 10 to 1 mixed.
Described swelling agent is one or more and ferrous metal or the aluminum metal particulate mixture in extra light calcined magnesia, quicklime, red stone, the zinc oxide, and ferrous metal particle or aluminum metal particulate mixed volume are all below 1%; Oxide compound can be that any two kinds of mixing also can be multiple mixing, and mixed ratio is regulated arbitrarily according to the expansion needs.
The present invention's beneficial effect compared with prior art is:
This supersaturation sodium-chlor well cementing mortar architecture is the basis with the anti-sulphur G of high level silicate cement; Utilize the unstable of supersaturated solution character and have the character of the steady state that is situated between; Add anti-salt water retaining, retardant, enhancing anti-migration agent, swelling agent, weighting agent, fresh water, sodium-chlor by proportioning, this supersaturation sodium-chlor well cementing mortar architecture had the following advantages:
(1) has good anti-salt dirt and anticalcium and invade ability;
(2) overcome the unmanageable shortcoming of supersaturated brine cement slurry thickening time, the thickening time can be regulated arbitrarily as required, and temperature variation is linear rule to the influence of thickening time and changes;
(3) controllable density of this supersaturation sodium-chlor well cementing mortar architecture is adjustable, can be at 1.90-2.40g/cm
3Regulate arbitrarily in the scope, and grout has good fluidity, WL is less, can satisfy complicated well saline bed well cementing operation requirement;
(4) 24 hours maintenance intensity of this supersaturation sodium-chlor well cementing mortar architecture is greater than 12 MPas, and the microdilatancy effect that itself has can be avoided the generation of micro-annulus, and the cement stone after guaranteeing to solidify and the bonding capacity on sleeve pipe, cement stone and stratum are good;
(5) grout has excellent nearly " right angle multiviscosisty " performance, for preventing that waterborne the scurrying of oil gas has significant effect in the stratum.
(6) the construction safety performance is prone to hold, and apparatus adaptability is better, does not need special equipment, and cement operations is convenient;
This supersaturation sodium-chlor well cementing mortar architecture technology is reliable; Site operation is simple and convenient, and it is effective to cement the well, and can satisfy saline bed; Cementing requirement under the complex conditions such as high pressure and deep well saline bed and huge thick saline bed has been filled up the blank of domestic supersaturation sodium-chlor well cementing mortar architecture.
Embodiment
Be described in detail in the face of embodiment of the present invention down:
Before the preparation supersaturation sodium-chlor well cementing mortar architecture, prepare material by each following raw material and umber:
100 parts of high anti-sulphur G level silicate cements
0～200 part of weighting agent
7～15 parts of anti-salt water retainings
6～15 parts of sanitass
0.5～2 part of retardant
38～60 parts of fresh water
38～40 parts in sodium-chlor
Strengthen 0.2～1 part of anti-migration agent
0.25～1 part of swelling agent.
The mineral constituent and the quality percentage composition of the anti-sulphur G of wherein said high level silicate cement are tricalcium silicate (Ca
3SiO
5) 48～65%, Dicalcium Phosphate (Feed Grade) (Ca
2SiO
4) 20～26%, tricalcium aluminate (Ca
3Al
2O
6) 1～3%, celite (Ca
4Al
2Fe
2O
10) 8～17%, Natural manganese dioxide of other components, gypsum, insolubles etc. accounts for 2-7%; This raw material is the commodity of selling on the market.
Described anti-salt water retaining is N; A kind of in N-DMAA (NNDMA), vinylformic acid/2-acrylic amide-2-methyl propane sulfonic acid (AA/AMPS base polymer), the acrylic amide/2-acrylic amide-2-methyl propane sulfonic acid (AM/AMPS base polymer), the relative molecular weight of polymkeric substance is 100,000～2,500,000.
Described weighting agent is a ground hematite, and its staple is Fe
2O
3, its particle size range is 1200 order to 200 orders, its density is 4.8～5.1 g/cm
3
Described sanitas is 200nm ultrafine high activity silicon-dioxide (SiO
2) particulate and water presses the suspension liquid that the mixed of 1:1 forms.
Described retardant is the glucose sodium saccharate, sodium glucoheptonate, Seignette salt, boric acid, a kind of in the organophosphate.
Described enhancing anti-migration agent is that a kind of and Repone K in trolamine, diethylolamine, the tri-isopropanolamine is by 10 to 1 mixtures that mix.
Described swelling agent is one or more and ferrous metal particle or the aluminum metal particulate mixture in extra light calcined magnesia, quicklime, red stone, the zinc oxide; Ferrous metal particle or aluminum metal particulate mixed volume are below 1%; Oxide compound can any two kinds of mixing also can be multiple mixing, and mixed ratio is regulated arbitrarily according to the expansion needs.
Described sodium-chlor is that salt is used in general industry.
Experimental technique:
Press oil gas well cementing operation grout touchstone ISO 10426-2003 standard fabrication grout, and measure the performance and the cement stone ultimate compression strength of grout, the swell test reference of grout: JC/T 313-2009 expansive cement swelling rate test method is carried out.
Specific embodiment 1:
100 parts of high anti-sulphur G level silicate cements, 38 parts of fresh water, 10 parts of anti-salt water retainings, 8 parts of sanitass strengthen 0.5 part of anti-migration agent, 15 parts in sodium-chlor, 0.5 part of swelling agent, 0.8 part of retardant.
Specific embodiment 2:
100 parts of high anti-sulphur G level silicate cements, 40 parts of fresh water, 13 parts of anti-salt water retainings, 10 parts of sanitass strengthen 0.5 part of anti-migration agent, 16 parts in sodium-chlor, 0.5 part of swelling agent, 0.8 part of retardant, 15 parts of weighting agents.
Specific embodiment 3:
100 parts of high anti-sulphur G level silicate cements, 45 parts of fresh water, 14 parts of anti-salt water retainings, 10 parts of sanitass strengthen 0.5 part of anti-migration agent, 18 parts in sodium-chlor, 0.5 part of swelling agent, 0.6 part of retardant, 52 parts of weighting agents.
Specific embodiment 4:
100 parts of high anti-sulphur G level silicate cements, 49 parts of fresh water, 15 parts of anti-salt water retainings, 12 parts of sanitass strengthen 0.5 part of anti-migration agent, 20 parts in sodium-chlor, 0.5 part of swelling agent, 0.6 part of retardant, 80 parts of weighting agents.
Specific embodiment 5:
100 parts of high anti-sulphur G level silicate cements, 52 parts of fresh water, 15 parts of anti-salt water retainings, 12 parts of sanitass strengthen 0.5 part of anti-migration agent, 21 parts in sodium-chlor, 0.5 part of swelling agent, 0.7 part of retardant, 118 parts of weighting agents.
Specific embodiment 6:
100 parts of high anti-sulphur G level silicate cements, 55 parts of fresh water, 15 parts of anti-salt water retainings, 12 parts of sanitass strengthen 0.5 part of anti-migration agent, 22 parts in sodium-chlor, 0.5 part of swelling agent, 0.8 part of retardant, 150 parts of weighting agents.
Experimental result is seen table 1.
Table 1 supersaturation sodium-chlor well cementing mortar architecture The performance test results
The weighting agent of this supersaturation sodium-chlor well cementing mortar architecture adopts ground hematite, and molecular formula is Fe
2O
3, ground hematite density is not less than 4.70g/cm3 at least.At the grout that increases the weight of just can obtain under the less situation of dosage the density that requires, help the mobile adjusting of grout, also help improving the early strength of cement stone.Ground hematite should pass through selected, to reduce its viscosity effect.
Anti-salt water retaining can adopt N; N-DMAA (NNDMA); A kind of in vinylformic acid/2-acrylic amide-2-methyl propane sulfonic acid (AA/AMPS base polymer), the acrylic amide/2-acrylic amide-2-methyl propane sulfonic acid (AM/AMPS base polymer), or several kinds used simultaneously.N, N-DMAA (NNDMA) has been introduced and has been difficult for hydrolysising group, and resistance to elevated temperatures obviously strengthens; AMPS heat-resistant salt-resistant ability is strong, and polymerization activity is high, uses increasingly extensive.The AMPS/AM/AA terpolymer has Heat stability is good, falls filtration capacity and the heat and salinity tolerance ability is strong, well the process various types grout.
Retardant adopts glucose sodium saccharate, sodium glucoheptonate, Seignette salt, boric acid; A kind of in the organophosphate, perhaps with several kinds use simultaneously all can, be mainly used in the thickening time of regulating grout; Under the comprehensive action of anti-salt water retaining, swelling agent, when hydration reaction acquires a certain degree, make grout carry out the transition to setting period rapidly; This moment, cement consistency rose rapidly, and the multiviscosisty curve is almost rectangular, reaches " right angle multiviscosisty " perfect condition of grout.
Strengthen anti-migration agent and be by a kind of and Repone K in trolamine, diethylolamine, the tri-isopropanolamine by 10 to 1 mixtures that mix.Trolamine has another name called Triethanolamine 99(TEA 99), is the organic setting accelerator of a kind of no chlorine, is alkalescence, the cement early strength agent of doing commonly used; Tri-isopropanolamine is mainly used in cement additive, and in order to improve grinding efficiency, to cut down the consumption of energy, increase strength of cement, its later strength is superior to trolamine.Diethylolamine has another name called double hydroxyethyl amine, mainly as acid gas absorbent.Appoint wherein a kind of use that mixes with Repone K, all have good enhancing anti-channeling performance.
In swelling agent employing Natural manganese dioxide, quicklime, red stone, the zinc oxide one or more and ferrous metal particle or aluminum metal particle mix.Metal-powder can produce volumetric expansion; Simultaneously mixed metal oxide uses, and this swelling agent can start hydration reaction when cement paste structure begins to form, when cement slurry has when hanging down gel strength when limited (); Expansion reaction speed reaches maximum, and speed of reaction reduces gradually subsequently; Be the hydration rate of swelling agent and the formation speed synchronization of cement paste structure.
Sanitas adopts by 200nm ultrafine high activity silicon-dioxide (SiO
2) particulate handles the back through special process and press the suspension liquid of the mixed formation of 1:1 with water.Utilize nanometer SiO
2Many meso-hole structures in surface and superpower adsorptive power and unusual physicochemical property mix and have good preservative effect in the grout, effectively reduce the corrosion to heavy casing, cement stone.
The above is the embodiment of this invention; Above-mentioned various not illustrating constitutes restriction to flesh and blood of the present invention; Under the those of ordinary skill of technical field after having read this specification sheets, can make an amendment or be out of shape above-mentioned embodiment, and do not deviate from essence of the present invention and scope.
Claims (7)
1. supersaturation sodium-chlor well cementing mortar architecture, it is characterized in that: its each component and part by weight are following:
100 parts of high anti-sulphur G level silicate cements
0～200 part of weighting agent
7～15 parts of anti-salt water retainings
6～15 parts of sanitass
0.5～2 part of retardant
38～60 parts of fresh water
38～40 parts in sodium-chlor
Strengthen 0.2～1 part of anti-migration agent
0.25～1 part of swelling agent.
2. a kind of supersaturation sodium-chlor well cementing mortar architecture according to claim 1; It is characterized in that: described anti-salt water retaining N; A kind of in N-DMAA (NNDMA), vinylformic acid/2-acrylic amide-2-methyl propane sulfonic acid (AA/AMPS base polymer), the acrylic amide/2-acrylic amide-2-methyl propane sulfonic acid (AM/AMPS base polymer), the relative molecular weight of polymkeric substance is 100,000～2,500,000.
3. a kind of supersaturation sodium-chlor well cementing mortar architecture according to claim 1, it is characterized in that: described weighting agent is a ground hematite, its staple is Fe
2O
3, its particle size range is 1200 order to 200 orders, its density is 4.8～5.1 g/cm
3
4. a kind of supersaturation sodium-chlor well cementing mortar architecture according to claim 1 is characterized in that: described sanitas is 200nm ultrafine high activity silicon-dioxide (SiO
2) particulate and water presses the suspension liquid that the mixed of 1:1 forms.
5. a kind of supersaturation sodium-chlor well cementing mortar architecture according to claim 1, it is characterized in that: described retardant is the glucose sodium saccharate, sodium glucoheptonate, Seignette salt, boric acid, a kind of in the organophosphate.
6. a kind of supersaturation sodium-chlor well cementing mortar architecture according to claim 1 is characterized in that: described enhancing anti-migration agent is the mixture that a kind of and Repone K in trolamine, diethylolamine, the tri-isopropanolamine forms by 10 to 1 mixed.
7. a kind of supersaturation sodium-chlor well cementing mortar architecture according to claim 1; It is characterized in that: described swelling agent is one or more and ferrous metal particle or the aluminum metal particulate mixture in extra light calcined magnesia, quicklime, red stone, the zinc oxide; Ferrous metal particle or aluminum metal particulate mixed volume are below 1%; Oxide compound can any two kinds of mixing also can be multiple mixing, and mixed ratio is regulated arbitrarily according to the expansion needs.
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| CN103059824A (en) * | 2013-01-16 | 2013-04-24 | 西南石油大学 | First boundary casing anti-corrosion cement slurry for well cementation and preparation method thereof |
| CN103320107A (en) * | 2013-06-19 | 2013-09-25 | 西南石油大学 | Tenacity anti-fluid-channeling cement slurry for solid expansion pipe fixed well |
| CN104099071A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Horizontal well-cementation expandable cement mortar and preparation method thereof |
| CN104610949A (en) * | 2015-02-02 | 2015-05-13 | 中国海洋石油总公司 | Supersaturated potassium chloride cement paste for well cementation |
| CN105255463A (en) * | 2015-11-04 | 2016-01-20 | 安东石油技术（集团）有限公司 | Elastic-plastic minimum inflation well cement slurry and preparation method thereof |
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| CN113700452A (en) * | 2021-05-27 | 2021-11-26 | 河南中源化学股份有限公司 | Alkali-resistant cement slurry plugging method |
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| CN1803695A (en) * | 2006-01-04 | 2006-07-19 | 大庆石油管理局 | CO2 corrosion-prevented cement system for oil well |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059824A (en) * | 2013-01-16 | 2013-04-24 | 西南石油大学 | First boundary casing anti-corrosion cement slurry for well cementation and preparation method thereof |
| CN104099071A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Horizontal well-cementation expandable cement mortar and preparation method thereof |
| CN103320107A (en) * | 2013-06-19 | 2013-09-25 | 西南石油大学 | Tenacity anti-fluid-channeling cement slurry for solid expansion pipe fixed well |
| CN104610949A (en) * | 2015-02-02 | 2015-05-13 | 中国海洋石油总公司 | Supersaturated potassium chloride cement paste for well cementation |
| CN105255463A (en) * | 2015-11-04 | 2016-01-20 | 安东石油技术（集团）有限公司 | Elastic-plastic minimum inflation well cement slurry and preparation method thereof |
| CN105255463B (en) * | 2015-11-04 | 2018-06-26 | 安东石油技术（集团）有限公司 | Elastoplasticity microdilatancy cementing slurry and preparation method thereof |
| CN109915049A (en) * | 2019-04-10 | 2019-06-21 | 中国石油大学胜利学院 | A kind of closed oil well washer |
| CN112920784A (en) * | 2021-02-01 | 2021-06-08 | 中石化石油工程技术服务有限公司 | Novel anti-pollution high-density white oil-based plugging cement slurry and preparation method thereof |
| CN113700452A (en) * | 2021-05-27 | 2021-11-26 | 河南中源化学股份有限公司 | Alkali-resistant cement slurry plugging method |
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| CN102585788B (en) | 2013-07-31 |
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