CN101747880A - Deep-water low-temperature low-density early-strength cementing slurry for well cementation - Google Patents
Deep-water low-temperature low-density early-strength cementing slurry for well cementation Download PDFInfo
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Abstract
The invention relates to deep-water low-temperature low-density early-strength cementing slurry for well cementation in petroleum drilling engineering, which contains 100 parts of low-temperature early-strength cement, 10 to 30 parts of low-temperature reinforcing material, 10 to 80 parts of low-density light-weight material, 0.5 to 4 parts of drag reducer, 2.5 to 8 parts of fluid loss additive, 0.1 to 5 parts of retarder, 0.15 to 1.2 parts of defoamer, 2.5 to 8 parts of early strength agent and 57 to 95 parts of water, and slurry with the density of 1.2g/cm3 to 1.7g/cm3 can be prepared. The slurry system at least has the following advantages that: the maximum early strength (24 hours) can reach 14.7MPa, the long-term strength stability is good, the static gelling transition time is short, and the system is stable. The invention provides technical support for the quality of deep-water well cementation.
Description
Technical field
The present invention is the used a kind of deep-water low-temperature low-density early-strength cementing slurry for well cementation in a kind of petroleum drilling engineering field, particularly cementing technology, is used for the deep-water low-temperature well cementation.
Background technology
World ocean reserves of oil amount is about more than 1,000 hundred million tons, more than 380 hundred million tons of proven reserve; The ocean natural gas reserves are about 140 tcms, and explored reserves are about 40 tcms.The ocean mean depth is 3730 meters, and the marine site of 3000 meters～6000 meters depth of waters has accounted for 73.83% of the ocean total area.But 80% of present explored marine oil reserves still concentrate on 500 meters depth of waters with interior zone, nearly national fishing shelf, and the hydrocarbon rich resource of not exploratory development is also being contained in this explanation in the seabed of deep water (500 meters-1500 meters) even super deep water (more than 1500 meters).All there are a large amount of operations, the highest depth of water degree of depth to reach nearly 3000 meters above the ocean deepwater drilling more than 300 meters is annual all over the world at present.
Deep water cementing is precondition and the important leverage that the deep water hydrocarbon resources exploration effectively carries out, but deep water cementing especially its topographical condition of deep water top layer section well cementing operation relative land operation is complicated more, the stratum, seabed is soft, and formation-parting pressure is low, and is easy to generate fluid and moves.Deep water cementing seabed formation temperature is low, suppresses the hydration process of oil well cement, and the average daily expense costliness of deepwater work, and the day of ship unit is taken generally between 22～300,000 dollars.The submarine temperature is very low generally speaking, has only about 4 ℃, has delayed the aquation of cement, has influenced the development of strength of cement, can not effectively resist fluidic and invade and guarantee carrying out smoothly of subsequent job." window " is narrow between top layer formation pore pressure and the parting pressure, and easily press leakage on the stratum, requires to use low-density cement mortar when well cementation, and density is at 1.32～1.56g/cm
3Between, this gives the demands for higher performance of grout.Be rich in villaumite and multiple high-valency metal example in the seawater, can produce corrosion, destroy its long-term behaviour cementing concrete.Therefore, require cementing concrete to have higher weather resistance and good comprehensive performances.
The deep-water low-temperature well cementation to the Essential Performance Requirements of grout is: 1. cement slurry density is low; 2. low temperature is down than short transit time and good ultimate compression strength; 3. good grout integrity; 4. long-term performance such as the sealing on grout and sleeve pipe and stratum and gluing is good; 5. displacement efficiency height.
At present, domestic just the beginning studied deepwater well cementing mortar, external deepwater well cementing mortar mainly contains: 1. gas-charged water mud technology, as EP1123907,2. high-alumina cement slurry system, as US6244343, US6060535,3. PSD grout technology, it is tightly packed to adopt conventional G level oil well cement and ultra-fine grain material-mix to form, as the US6656265 of Schlunberger.
The subject matter that exists: the high-alumina cement system is having superiority aspect the ultimate compression strength development, but strong to temperature sensitivity, and to the pollutent sensitivity, hydration heat is too fast; Gas-charged water mud technical sophistication, the cost height; Strength development is slow at low temperatures to adopt G level oil well cement, and quiet gelling development is slow, influences the anti-channeling ability of grout, influences the deep water cementing quality, and the deep water cementing quality influence the life-span of deep water hydrocarbon well, even jeopardizes the security of oil-gas mining and platform.
Summary of the invention
The objective of the invention is: a kind of deep-water low-temperature low-density early-strength cementing slurry for well cementation is provided, finishes deep water cementing, improve the adaptability of cementing slurry, improve cementing quality in low temperature, shallow-layer stream, Absorption Wells.Carry out the research of the strong grout of low-temperature low-density early, develop in the deep-water low-temperature condition and have the strong mortar architecture of good over-all properties low-temperature low-density early.
The technical solution used in the present invention: according to various components hydration activity difference at low temperatures, in cement, suitably improve the high component of reactive behavior under the low temperature, form low-temperature high-early strength cement, and cooperate other extra material and admixture, make low close short-term strength cement slurry.Deep-water low-temperature low-density early-strength cementing slurry for well cementation of the present invention is characterized in that: each constituent mass part is:
100 parts of low-temperature high-early strength cement
10～30 parts of low temperature strongtheners
10～80 parts of low density lightening materials
2.5～8 parts of hardening accelerator
0.5～4 part of flow improver
2.5～8 parts of water retainings
0.1～5 part of retardant
0.15～1.2 part of defoamer
57～95 parts in water
In the above-mentioned deep-water low-temperature low-density early-strength cementing slurry for well cementation:
Described low-temperature high-early strength cement is that mineral content and weight part are in the 100 weight part low-temperature high-early strength cement: SiO
2, 3～13 parts; Al
2O
3, 30～38 parts; Fe
2O
3, 1～3 part; CaO, 38～45 parts; SO
3, 8～15 parts.
Described low temperature strongthener is the ultrafine powder slag, contains following ingredients and weight part: SiO in the 100 weight part ultrafine powder slags
2, 32～40 parts; Al
2O
3, 8～16 parts; Fe
2O
3, 1～3 part; CaO, 34～45 parts; MgO, 3～10 parts.This material can aquation in water be formed with the material of intensity, and the scoriaceous granularity of ultrafine powder is that particle size range is between 1～100 micron.
The low density lightening material is hollow glass micropearl or synthetic sodium boron microballon (production of 3M company).Synthetic sodium boron microballon has lower density and is generally 0.38g/cm
3Higher withstand voltage properties is arranged, reach as high as 18000psi; And granularity thin (10-80 μ m), and its material composition and some constituent class of cement are seemingly.
Described hardening accelerator is the short hardening accelerator that coagulates of the CA903S of anhydrous sodium metasilicate or Tianjin Cnpc Boxing Engineering Technology Co., Ltd..The molecular formula Na of anhydrous sodium metasilicate
2SiO
3, pH value is about 12.4.
Water retaining is polyacrylamide, polyvinyl alcohol, modified-cellulose or 2-acrylamido-2-methyl propane sulfonic acid (AMPS multipolymer).Polyacrylamide adopts negatively charged ion, positively charged ion or non-ionic polyacrylamide all can.Modified-cellulose is methylcellulose gum, ethyl cellulose or carboxymethyl cellulose.
Flow improver is the polycondensate (FDN) or the metal carboxylate of formaldehyde and acetone, and metal carboxylate comprises vinylformic acid-acrylate-co-polymer of sulfonate or vinylformic acid-maleic acid
Retardant is citric acid, organic phosphate, and organic phosphate is hydroxy ethylene diphosphonic acid sodium or hydroxy ethylene diphosphonic acid potassium or ethylenediamine tetramethylene phosphonic acid salt.
Defoamer is polyglycol ether or sec-n-octyl alcohol or tributyl phosphate.
In order to improve the shock resistance of deep-water low-temperature low-density early-strength cementing slurry for well cementation, wherein can also add oil well cement toughner.Described oil well cement toughner is filamentary material or organic polymer latex.Organic polymer latex is polyvinyl acetate (PVA), polystyrene or styrene-butadiene copolymer, and filamentary material is carbon fiber or nylon fiber.Nylon fiber also claims tynex.
The preparation of deep-water low-temperature low-density early-strength cementing slurry for well cementation and using method: at first be prepared into to do and mix material and the mixed material of liquid.With 100 parts of low-temperature high-early strength cement, 10～30 parts of low temperature strongtheners, 10～80 parts of low density lightening materials, 2.5～8 parts of hardening accelerator and 0.5～4 part of mixing and stirring of flow improver, become to do and mix material.With 57～95 parts in water, 2.5～8 parts of water retainings, 0.1～5 part of retardant and 0.15～1.2 part of mixing and stirring of defoamer, become liquid and mix material.To do the mixed material of mixed material and liquid then and puddle evenly, being configured to density is 1.2～1.7g/cm
3Deep-water low-temperature low-density early-strength cementing slurry for well cementation.On-the-spot in well cementation, at first that the mixed mixing of materials of liquid is even, the dried mixing of materials of mixing of adding is even then, makes deep-water low-temperature low-density early-strength cementing slurry for well cementation.Advantages such as deep-water low-temperature low-density early-strength cementing slurry for well cementation has the early strength height, and the intensity permanent stability are good, and quiet gelling is short transit time, and system is stable.
The present invention's beneficial effect compared with prior art:
1, strength development is fast at low temperatures for deep-water low-temperature low-density early-strength cementing slurry for well cementation of the present invention, can reach 14.7MPa in 24 hours, even still have higher early strength in the time of 4 ℃.
2, deep-water low-temperature low-density early-strength cementing slurry for well cementation of the present invention has overcome the problem of the poor stability of common low-density cement mortar, has good suspension stability, and the difference of densities of cement stone is less than 0.05g/cm
3
3. deep-water low-temperature low-density early-strength cementing slurry for well cementation of the present invention adopts tightly packed design concept, and rate of permeation is low, and cement stone permanent stability are good, and quiet gel strength development is fast, has good anti-gas channeling ability.
4, deep-water low-temperature low-density early-strength cementing slurry for well cementation of the present invention has that rheological is good, dehydration is little, the thickening time is easy to regulate, and makes things convenient for site operation.
Deep-water low-temperature low-density early-strength cementing slurry for well cementation of the present invention has solved the cryogenic cementing technology difficult problem in deep water top layer, saves the oilwell drilling time, helps improving cementing quality, for the deep water hydrocarbon exploitation provides technical support.
Embodiment:
Embodiment 1: density is 1.7g/cm
3Deep-water low-temperature low-density early-strength cementing slurry for well cementation: each component is by weight.
100 parts of low-temperature high-early strength cement.Mineral content and weight part are in the low-temperature high-early strength cement of 100 weight parts: SiO
2, 10 parts; Al
2O
3, 35 parts; Fe
2O
3, 2 parts; CaO, 43 parts; SO
3, 10 parts.
20 parts of low temperature strongtheners.The low temperature strongthener is the ultrafine powder slag, contains following ingredients and weight part: SiO in the ultrafine powder slag of 100 weight parts
2, 38 parts; Al
2O
3, 12 parts; Fe
2O
3, 2.5 parts; CaO, 42.5 parts; MgO, 5 parts.The scoriaceous particle size range of ultrafine powder is 45 microns.
10 parts of low density lightening materials.What the low density lightening material adopted is hollow glass micropearl.
2.5 parts of hardening accelerator.What hardening accelerator adopted is the short hardening accelerator that coagulates of CA903S that Tianjin Cnpc Boxing Engineering Technology Co., Ltd. produces.
0.5 part of flow improver.What flow improver adopted is formaldehyde and acetone polycondensate (FDN).
2.5 parts of water retainings.What water retaining adopted is polyvinyl alcohol.
1.2 parts of retardant.What retardant adopted is citric acid.
Defoamer, 0.15 part.What defoamer adopted is sec-n-octyl alcohol or tributyl phosphate.
Seawater, 57 parts.
Embodiment 2: density is 1.5g/cm
3Deep-water low-temperature low-density early-strength cementing slurry for well cementation: each component is by weight.
100 parts of low-temperature high-early strength cement.Mineral content and weight part are in the low-temperature high-early strength cement of 100 weight parts: SiO
2, 8 parts; Al
2O
3, 37 parts; Fe
2O
3, 2 parts; CaO, 38 parts; SO
3, 15 parts.
25 parts of low temperature strongtheners.The low temperature strongthener is the ultrafine powder slag, contains following ingredients and weight part: SiO in the ultrafine powder slag of 100 weight parts
2, 35 parts; Al
2O
3, 14 parts; Fe
2O
3, 1.5 parts; CaO, 40 parts; MgO, 9.5 parts.The scoriaceous particle size range of ultrafine powder is between 45～90 microns.
25 parts of low density lightening materials; What the low density lightening material adopted is synthetic sodium boron microballon, and granularity is between 10-80 μ m, and synthetic sodium boron microballon is produced by 3M company.
4 parts of hardening accelerator.The anhydrous sodium metasilicate that hardening accelerator adopts.
1.5 parts of flow improvers.What flow improver adopted is vinylformic acid-maleic acid.
5 parts of water retainings.What water retaining adopted is 2-acrylamido-2-methyl propane sulfonic acid (AMPS multipolymer).
1.2 parts of retardant.What retardant adopted is citric acid.
Defoamer, 0.2 part.What defoamer adopted is polyglycol ether.
Fresh water, 67 parts.
Embodiment 3: density is 1.4g/cm
3Deep-water low-temperature low-density early-strength cementing slurry for well cementation: each component is by weight.
100 parts of low-temperature high-early strength cement, mineral content and weight part are in the low-temperature high-early strength cement of 100 weight parts: SiO
2, 5 parts; Al
2O
3, 34 parts; Fe
2O
3, 3 parts; CaO, 44 parts; SO
3, 14 parts.
25 parts of low temperature strongtheners; The low temperature strongthener is the ultrafine powder slag, contains following ingredients and weight part: SiO in the ultrafine powder slag of 100 weight parts
2, 33 parts; Al
2O
3, 15 parts; Fe
2O
3, 3 parts; CaO, 42 parts; MgO, 7 parts.The scoriaceous particle size range of ultrafine powder is between 45～90 microns.
35 parts of low density lightening materials.What the low density lightening material adopted is hollow glass micropearl.
3 parts of hardening accelerator.It is the short hardening accelerator that coagulates of CA903S that Tianjin Cnpc Boxing Engineering Technology Co., Ltd. produces that hardening accelerator adopts.
2.5 parts of flow improvers.What flow improver adopted is vinylformic acid-acrylate-co-polymer of sulfonate.
6 parts of water retainings.What water retaining adopted is polyacrylamide.
1 part of retardant.What retardant adopted is hydroxy ethylene diphosphonic acid sodium.
0.2 part of defoamer.What defoamer adopted is polyglycol ether.
Seawater, 75 parts.
Embodiment 4: density is 1.2g/cm
3Deep-water low-temperature low-density early-strength cementing slurry for well cementation: each component is by weight.
100 parts of low-temperature high-early strength cement.Mineral content and weight part are in the low-temperature high-early strength cement of 100 weight parts: SiO
2, 6 parts; Al
2O
3, 36 parts; Fe
2O
3, 1.5 parts; CaO, 43 parts; SO
3, 13.5 parts.
10 parts of low temperature strongtheners; The low temperature strongthener is the ultrafine powder slag, contains following ingredients and weight part: SiO in the ultrafine powder slag of 100 weight parts
2, 39 parts; Al
2O
3, 10 parts; Fe
2O
3, 2 parts; CaO, 40 parts; MgO, 9 parts.The scoriaceous particle size range of ultrafine powder is between 60～90 microns.
65 parts of low density lightening materials.What the low density lightening material adopted is hollow glass micropearl.
3 parts of hardening accelerator.What hardening accelerator adopted is anhydrous sodium metasilicate.
3 parts of flow improvers.What flow improver adopted is vinylformic acid-maleic acid.
3 parts of water retainings.What water retaining adopted is ethyl cellulose.
0.8 part of retardant.What retardant adopted is hydroxy ethylene diphosphonic acid potassium.
Defoamer, 0.2 part.What defoamer adopted is sec-n-octyl alcohol or tributyl phosphate.
Seawater, 95 parts.
Embodiment 5: density is 1.7g/cm
3Deep-water low-temperature low-density early-strength cementing slurry for well cementation: each component is by weight.
100 parts of low-temperature high-early strength cement.Mineral content and weight part are in the low-temperature high-early strength cement of 100 weight parts: SiO
2, 3 parts; Al
2O
3, 34 parts; Fe
2O
3, 3 parts; CaO, 45 parts; SO
3, 15 parts.
20 parts of low temperature strongtheners.The low temperature strongthener is the ultrafine powder slag, contains following ingredients and weight part: SiO in the ultrafine powder slag of 100 weight parts
2, 32 parts; Al
2O
3, 16 parts; Fe
2O
3, 1 part; CaO, 45 parts; MgO, 6 parts.The scoriaceous particle size range of ultrafine powder is 45 microns.
10 parts of low density lightening materials.What the low density lightening material adopted is hollow glass micropearl.
2.5 parts of anhydrous sodium metasilicates of hardening accelerator.
1.5 parts of flow improvers.What flow improver adopted is olefin(e) acid-maleic acid.
2 parts of water retainings.What water retaining adopted is carboxymethyl cellulose.
1.2 parts of retardant.What retardant adopted is ethylenediamine tetramethylene phosphonic acid salt.
Defoamer, 0.15 part.What defoamer adopted is sec-n-octyl alcohol or tributyl phosphate.
2 parts of toughner.What toughner adopted is polyvinyl acetate (PVA).
Seawater, 57 parts.
Embodiment 6: density is 1.5g/cm
3Deep-water low-temperature low-density early-strength cementing slurry for well cementation: each component is by weight.
100 parts of low-temperature high-early strength cement.Mineral content and weight part are in the low-temperature high-early strength cement of 100 weight parts: SiO
2, 9 parts; Al
2O
3, 32 parts; Fe
2O
3, 2 parts; CaO, 43 parts; SO
3, 14 parts.
30 parts of low temperature strongtheners.The low temperature strongthener is the ultrafine powder slag, contains following ingredients and weight part: SiO in the ultrafine powder slag of 100 weight parts
2, 38 parts; Al
2O
3, 10 parts; Fe
2O
3, 3 parts; CaO, 45 parts; MgO, 4 parts.The scoriaceous particle size range of ultrafine powder is between 1～100 micron.
27 parts of low density lightening materials; What the low density lightening material adopted is synthetic sodium boron microballon, and granularity is between 10-80 μ m, and synthetic sodium boron microballon is produced by 3M company.
4 parts of hardening accelerator.What hardening accelerator adopted is the short hardening accelerator that coagulates of CA903S that Tianjin Cnpc Boxing Engineering Technology Co., Ltd. produces.
1.5 parts of flow improvers.What flow improver adopted is the polycondensate (FDN) of formaldehyde and acetone.
5 parts of water retainings.What water retaining adopted is 2-acrylamido-2-methyl propane sulfonic acid (AMPS multipolymer).
1.2 parts of retardant.What retardant adopted is citric acid.
Defoamer, 0.2 part.What defoamer adopted is polyglycol ether.
5 parts of toughner.What toughner adopted is styrene-butadiene copolymer.
Fresh water, 67 parts.
Embodiment 7: density is 1.4g/cm
3Deep-water low-temperature low-density early-strength cementing slurry for well cementation: each component is by weight.
100 parts of low-temperature high-early strength cement, mineral content and weight part are in the low-temperature high-early strength cement of 100 weight parts: SiO
2, 8 parts; Al
2O
3, 36 parts; Fe
2O
3, 2 parts; CaO, 41 parts; SO
3, 13 parts.
15 parts of low temperature strongtheners; The low temperature strongthener is the ultrafine powder slag, contains following ingredients and weight part: SiO in the ultrafine powder slag of 100 weight parts
2, 37 parts; Al
2O
3, 9 parts; Fe
2O
3, 1 part; CaO, 43 parts; MgO, 10 parts.The scoriaceous particle size range of ultrafine powder is between 5～80 microns.
30 parts of low density lightening materials.What the low density lightening material adopted is synthetic sodium boron microballon, and granularity is between 10-80 μ m, and synthetic sodium boron microballon is produced by 3M company.
2 parts of hardening accelerator.What hardening accelerator adopted is anhydrous sodium metasilicate.
2.5 parts of flow improvers.What flow improver adopted is vinylformic acid-maleic acid.
2 parts of water retainings.What water retaining adopted is polyvinyl alcohol.
1 part of retardant.What retardant adopted is citric acid.
0.2 part of defoamer.What defoamer adopted is polyglycol ether.
3 parts of toughner.What toughner adopted is carbon fiber.
Fresh water, 75 parts.
Embodiment 8: density is 1.2g/cm
3Deep-water low-temperature low-density early-strength cementing slurry for well cementation: each component is by weight.
100 parts of low-temperature high-early strength cement.Mineral content and weight part are in the low-temperature high-early strength cement of 100 weight parts: SiO
2, 6 parts; Al
2O
3, 36 parts; Fe
2O
3, 1.5 parts; CaO, 43 parts; SO
3, 13.5 parts.
10 parts of low temperature strongtheners; The low temperature strongthener is the ultrafine powder slag, contains following ingredients and weight part: SiO in the ultrafine powder slag of 100 weight parts
2, 39 parts; Al
2O
3, 10 parts; Fe
2O
3, 2 parts; CaO, 40 parts; MgO, 9 parts.The scoriaceous particle size range of ultrafine powder is between 60～90 microns.
65 parts of low density lightening materials.What the low density lightening material adopted is hollow glass micropearl.
2 parts of hardening accelerator.What hardening accelerator adopted is anhydrous sodium metasilicate.
3 parts of flow improvers.What flow improver adopted is vinylformic acid-maleic acid.
4 parts of water retainings.What water retaining adopted is 2-acrylamido-2-methyl propane sulfonic acid (AMPS multipolymer).
0.8 part of retardant.What retardant adopted is hydroxy ethylene diphosphonic acid potassium.
3 parts of toughner.What toughner adopted is nylon fiber.
0.2 part of defoamer.What defoamer adopted is sec-n-octyl alcohol or tributyl phosphate.
Seawater, 95 parts.
The The performance test results tabulation of the deep-water low-temperature low-density early-strength cementing slurry for well cementation of eight embodiment:
| Sequence number | Density g/cm 3 | Flow/cm | API dehydration/ml | Thickening time/min | Initial consistency/Bc | Stability | Free liquid/ml | 4 ℃, 16h ultimate compression strength/MPa | 4 ℃, 72h ultimate compression strength/MPa |
| ??1 | ??1.7 | ??23 | ??39 | ??264 | ??17 | Stable | ??0 | ??14.5 | ??18.2 |
| ??2 | ??1.5 | ??22 | ??41 | ??250 | ??20 | Stable | ??0 | ??9.8 | ??15.6 |
| ??3 | ??1.4 | ??21 | ??32 | ??211 | ??22 | Stable | ??0 | ??7.2 | ??14.3 |
| ??4 | ??1.2 | ??22.5 | ??35 | ??309 | ??21 | Stable | ??0 | ??5.2 | ??12.1 |
| ??5 | ??1.7 | ??21.5 | ??62 | ??212 | ??18 | Stable | ??0 | ??13.8 | ??18.3 |
| ??6 | ??1.5 | ??21 | ??55 | ??254 | ??16 | Stable | ??0 | ??10.1 | ??16.2 |
| ??7 | ??1.4 | ??20.5 | ??42 | ??202 | ??20 | Stable | ??0 | ??6.7 | ??15.1 |
| ??8 | ??1.2 | ??22 | ??46 | ??183 | ??22 | Stable | ??0 | ??5.5 | ??11.7 |
The test conditions of test is: 4 ℃ of temperature, pressure 30MPa.
Claims (11)
1. deep-water low-temperature low-density early-strength cementing slurry for well cementation, it is characterized in that: each ingredients weight parts is:
100 parts of low-temperature high-early strength cement;
10～30 parts of low temperature strongtheners;
10～80 parts of low density lightening materials;
2.5～8 parts of hardening accelerator;
0.5～4 part of flow improver;
2.5～8 parts of water retainings;
0.1～5 part of retardant;
0.15～1.2 part of defoamer;
57～95 parts in water.
2. deep-water low-temperature low-density early-strength cementing slurry for well cementation according to claim 1 is characterized in that: described low-temperature high-early strength cement is that mineral content and weight part are in the 100 weight part low-temperature high-early strength cement: SiO
2, 3～13 parts; Al
2O
3, 30～38 parts; Fe
2O
3, 1～3 part; CaO, 38～45 parts; SO
3, 8～15 parts.
3. deep-water low-temperature low-density early-strength cementing slurry for well cementation according to claim 1 is characterized in that: described low temperature strongthener is the ultrafine powder slag, contains following ingredients and weight part: SiO in the ultrafine powder slag of 100 weight parts
2, 32～40 parts; Al
2O
3, 8～16 parts; Fe
2O
3, 1～3 part; CaO, 34～45 parts; MgO, 3～10 parts, the scoriaceous particle size range of ultrafine powder is between 1～100 micron.
4. according to claim 1,2 or 3 described deep-water low-temperature low-density early-strength cementing slurry for well cementation, it is characterized in that: described low density lightening material is hollow glass micropearl or synthetic sodium boron microballon.
5. according to claim 1,2 or 3 described deep-water low-temperature low-density early-strength cementing slurry for well cementation, it is characterized in that: described hardening accelerator is the short hardening accelerator that coagulates of anhydrous sodium metasilicate or CA903S.
6. according to claim 1,2 or 3 described deep-water low-temperature low-density early-strength cementing slurry for well cementation, it is characterized in that: described water retaining is polyacrylamide, polyvinyl alcohol, modified-cellulose or 2-acrylamido-2-methyl propane sulfonic acid (AMPS multipolymer); Modified-cellulose is methylcellulose gum, ethyl cellulose or carboxymethyl cellulose.
7. according to claim 1,2 or 3 described deep-water low-temperature low-density early-strength cementing slurry for well cementation, it is characterized in that: described flow improver is the polycondensate (FDN) or the metal carboxylate of formaldehyde and acetone, and metal carboxylate comprises vinylformic acid-acrylate-co-polymer of sulfonate or vinylformic acid-maleic acid.
8. according to claim 1,2 or 3 described deep-water low-temperature low-density early-strength cementing slurry for well cementation, it is characterized in that: wherein said retardant is citric acid or organic phosphate, and organic phosphate is hydroxy ethylene diphosphonic acid sodium, hydroxy ethylene diphosphonic acid potassium or ethylenediamine tetramethylene phosphonic acid salt.
9. according to claim 1,2 or 3 described deep-water low-temperature low-density early-strength cementing slurry for well cementation, it is characterized in that: described defoamer is polyglycol ether or sec-n-octyl alcohol or tributyl phosphate.
10. according to claim 1,2 or 3 described deep-water low-temperature low-density early-strength cementing slurry for well cementation, it is characterized in that: the oil well cement toughner that adds 1.5～6 weight parts, described oil well cement toughner is filamentary material or organic polymer latex, organic polymer latex is polyvinyl acetate (PVA), polystyrene, styrene-butadiene copolymer, and filamentary material is carbon fiber or nylon fiber.
11. deep-water low-temperature low-density early-strength cementing slurry for well cementation according to claim 10 is characterized in that: described nylon fiber fiber bundle diameters is 0.005～0.05mm, and length is 3～9mm, and the average tensile strength of fiber is 540～760MPa.
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| CN101747880B CN101747880B (en) | 2013-12-04 |
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| 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 |
| CN104293332A (en) * | 2014-09-11 | 2015-01-21 | 长江大学 | Drilling plug liquid for unconventional horizontal well multi-section drilling plug |
| CN104559981A (en) * | 2015-02-02 | 2015-04-29 | 中国海洋石油总公司 | Low-heat cement slurry capable of preventing gas hydrate from decomposition |
| CN104610948A (en) * | 2015-02-02 | 2015-05-13 | 中国海洋石油总公司 | Phosphoaluminate cement paste for deep sea cementing and shallow flow disaster prevention |
| CN104650829A (en) * | 2015-02-11 | 2015-05-27 | 中国石油大学(北京) | Reservoir protection agent composition and drilling fluid for medium-permeability reservoir and application of drilling fluid |
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| CN104946220A (en) * | 2015-06-12 | 2015-09-30 | 天津中油渤星工程科技有限公司 | Early strength foam cement slurry for well cementation |
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| CN105238385A (en) * | 2015-10-14 | 2016-01-13 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Antifoaming agent for acid fracturing returned liquid |
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| CN106396509A (en) * | 2016-08-06 | 2017-02-15 | 中国石油集团长城钻探工程有限公司固井公司 | A low-density high-strength cement mortar system wide in application range |
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| CN107286916A (en) * | 2016-04-12 | 2017-10-24 | 中国石油化工集团公司 | A kind of oil-gas field fracturing liquid containing PVA, PVA fiber, oil gas field well cementation agent and oil-gas field fracturing diverting agent |
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| CN102732237A (en) * | 2012-05-23 | 2012-10-17 | 成都欧美科石油科技股份有限公司 | Dry wellbore well cementation cement slurry |
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| 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 |
| CN103224772A (en) * | 2013-04-08 | 2013-07-31 | 中国石油天然气股份有限公司 | Cement slurry and preparation method and application thereof |
| CN103525386A (en) * | 2013-09-27 | 2014-01-22 | 廊坊古莱特石油技术有限公司 | Toughening agent for well-cementation cement slurry |
| CN104293332A (en) * | 2014-09-11 | 2015-01-21 | 长江大学 | Drilling plug liquid for unconventional horizontal well multi-section drilling plug |
| CN104293332B (en) * | 2014-09-11 | 2018-03-20 | 长江大学 | Unconventional horizontal well multistage bores plug brill plug liquid |
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| CN104610948A (en) * | 2015-02-02 | 2015-05-13 | 中国海洋石油总公司 | Phosphoaluminate cement paste for deep sea cementing and shallow flow disaster prevention |
| CN104650829A (en) * | 2015-02-11 | 2015-05-27 | 中国石油大学(北京) | Reservoir protection agent composition and drilling fluid for medium-permeability reservoir and application of drilling fluid |
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| CN105238385B (en) * | 2015-10-14 | 2018-07-20 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of acid fracturing returns drain antifoaming agent |
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