CN101318799B - High-strength low-freedom water low-density oil well cement paste - Google Patents

High-strength low-freedom water low-density oil well cement paste Download PDF

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CN101318799B
CN101318799B CN2008101159965A CN200810115996A CN101318799B CN 101318799 B CN101318799 B CN 101318799B CN 2008101159965 A CN2008101159965 A CN 2008101159965A CN 200810115996 A CN200810115996 A CN 200810115996A CN 101318799 B CN101318799 B CN 101318799B
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grout
density
water
cement
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CN101318799A (en
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王云庆
蔡久能
韩冰
袁梅
陈俊生
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Blue Ocean Boda Technology Co.,Ltd.
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China Oilfield Services Ltd
China National Offshore Oil Corp CNOOC
COSL Chemicals Tianjin Co Ltd
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    • 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
    • C04B28/02—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 containing hydraulic cements other than calcium sulfates
    • C04B28/026—Oil shale cements
    • 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
    • C09K8/473—Density reducing additives, e.g. for obtaining foamed cement compositions
    • 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
    • C09K8/487—Fluid loss control additives; Additives for reducing or preventing circulation loss
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses a high intensity low free water low density cement paste. The compositions by weight percentage of the cement paste are: 29 to 36 percent of Bohai seawater, 61.7 to 68.6 percent of solid low density cement material, and 2.3 to 2.4 percent of fluid additive. Compared with the conventional low temperature low density cement paste, the well cementation low temperature high intensity low free water low density well cementation cement paste has low free water, high intensity, easily controlled thickening time, and simpler operation routine. The density of the cement paste is between 1.48 and 1.52g/cm<3>; the intensity (24h, constant pressure and 50 DEG C) is more than or equal to 15MPa; the mobility is more than or equal to 24 centimeters; the free water is smaller than or equal to 1 ml; the suitable temperature is between 27 and 60 DEG C; and the thickening time is adjusted between 100 and 400 minutes.

Description

High-strength low-freedom water low-density oil well cement paste
Technical field
The present invention relates to the directly well cementation high-strength low-freedom water low-density grout of configuration of a kind of seawater.
Background technology
At present, the conventional low weight cement slurry of Bohai Sea Area is primarily aimed at the following problem that runs in the well cementing operation process and designs:
1, temperature is low, and hydrated cementitious is slow;
2, formation-parting pressure is low, and grout is easy to leakage;
3, shallow streamlined existence, it is out of control to be easy to that pressure takes place;
4, the existence of gas hydrate, the release that in the well cementing operation process, possibly produce hydrate.
Succeeding in developing of conventional low-temperature low-density grout well solved the demand of Bohai Sea Area to well cementation, but also there are some defectives in this grout in application process, as: the phenomenon that free water is higher, intensity is on the low side.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of cementing low-temperature high-strength low-freedom water low-density grout, the deficiency of having avoided conventional low-temperature low-density grout to exist, and controllability is good, and operational procedure is simple.
A kind of high-strength low-freedom water low-density grout provided by the invention comprises following component: seawater 29～36%, solid low density water mud material 61.7～68.6%, liquid additive 2.3～2.4%; The component of wherein said solid low density water mud material is: oil well cement 65%, lightening material 14～18%, superfine cement 10～8.5%, ultrafine slag 9.5～7%, water retaining 1.5%; The component of wherein said water retaining is: Z 150PH 60～90%, linking agent 1～30%, dispersion agent 1～10%, AM (2-acrylamido-2-methyl propane sulfonic acid/acrylic amide/sodium acrylate) polymkeric substance 10～20%; The component of wherein said liquid additive is: dispersion agent 41～84.2%, retardant 0～17.4%, and hardening accelerator 0～51.3%, skimmer 7.7～15.8%, said per-cent is weight percentage.
Preferably, said oil well cement is the G class g cement.
Preferably, said lightening material is a hollow float bead.
Cementing low-temperature high-strength low-freedom water low-density cementing slurry of the present invention is compared with conventional low-temperature low-density grout, and free water is little, intensity is high; Its thickening time is more easy to control, and operational procedure is more simple.Cement slurry density of the present invention is at 1.50 ± 0.02g/cm 3Between, intensity (24h, normal pressure, 50 ℃)>=15mpa; Degree of mobilization>=24cm; Free water≤1ml; 27～60 ℃ of Applicable temperatures; Thickening time, 100～400min was adjustable.
Embodiment
Embodiment 1 1.52g/cm 3Grout
At first prepare water retaining, according to Z 150PH 70g, AM (2-acrylamido-2-methyl propane sulfonic acid/acrylic amide/sodium acrylate) polymkeric substance 10.0g, linking agent 15g, dispersion agent 5g take by weighing each component.Preparation process is following: Z 150PH is poured in the 200ml beaker, again with AM (2-acrylamido-2-methyl propane sulfonic acid/acrylic amide/sodium acrylate) polymkeric substance, linking agent, dispersion agent be poured in the beaker successively; Stir then and puddled in 20 minutes evenly.Prepared mixture is a water retaining.
Secondly; Preparation grout: measure seawater 290g with the grout jar; Retardant 2g, dispersion agent 10g, skimmer 1.5g are made into mixing water; Be placed on watt woods whisking appliance 4000 rev/mins of constant speed and add solid low density water mud material 615g (wherein G level oil well cement 400g, lightening material 100g, superfine cement 60g, ultrafine slag 46g, preparation water retaining 9g) while stirring successively, be made into grout.
Above-mentioned dispersion agent can be selected aldehyde-ketone condensate etc., and retardant can be selected xylogen carbohydrate, organic acid, carbohydrate derivative etc., and lightening material is a hollow float bead.
The test result such as the following table 1 of present embodiment low-temperature high-strength low-freedom water low-density grout.
Table 1 density 1.52g/cm 3Grout
Figure GSB00000719488500021
Figure GSB00000719488500031
Embodiment 2 1.50g/cm 3Grout
At first prepare water retaining, according to Z 150PH 70g, AM (2-acrylamido-2-methyl propane sulfonic acid/acrylic amide/sodium acrylate) polymkeric substance 10.0g, linking agent 15g, dispersion agent 5g take by weighing each component.Preparation process is following: Z 150PH is poured in the 200ml beaker, again with AM (2-acrylamido-2-methyl propane sulfonic acid/acrylic amide/sodium acrylate) polymkeric substance, linking agent, dispersion agent be poured in the beaker successively; Stir then and puddled in 20 minutes evenly.Prepared mixture is a water retaining.
Next, according to: G level oil well cement 400g, seawater 320g, retardant 2g, skimmer 1.5g, water retaining 9g, dispersion agent 8g, lightening material 100g, superfine cement 60g, ultrafine slag 46g take by weighing each component, and all the other embodiments are with embodiment 1.
The test result such as the following table 2 of the cementing low-temperature high intensity low density cementing slurry of present embodiment.
Table 2 density 1.50g/cm 3Grout
Figure GSB00000719488500032
Embodiment 3 1.48g/cm 3Grout
At first prepare water retaining, according to Z 150PH 70g, AM (2-acrylamido-2-methyl propane sulfonic acid/acrylic amide/sodium acrylate) polymkeric substance 10.0g, linking agent 15g, dispersion agent 5g take by weighing each component.Preparation process is following: Z 150PH is poured in the 200ml beaker, again with AM (2-acrylamido-2-methyl propane sulfonic acid/acrylic amide/sodium acrylate) polymkeric substance, linking agent, dispersion agent be poured in the beaker successively; Stir then and puddled in 20 minutes evenly.Prepared mixture is a water retaining.
Next, according to: G level oil well cement 400g, seawater 340g, retardant 2g, skimmer 1.5g, water retaining 9g, dispersion agent 8g, lightening material 100g, superfine cement 60g, ultrafine slag 46g take by weighing each component, and all the other embodiments are with embodiment 1.
The test result such as the following table 3 of the cementing low-temperature high intensity low density cementing slurry of present embodiment.
Table 3 density 1.48g/cm 3Grout
Figure GSB00000719488500041
Can know from last table; The same density low-density cement mortar thickening time reduces along with the rising of temperature, same temperature increases along with the reduction of density; Same density intensity raises and raises along with temperature; Same temperature reduces along with the reduction of density, so the application of this cover system closely links to each other with on-the-spot, and the dosage of its fluid additive is by the scene conditional decision of cementing the well.
Concrete scheme: following embodiment chosen sg=1.50 three density sections; Each density section has been chosen three representative temperature sections, and (hole condition is decided with reference to Bohai Sea block characteristics; Bohai Sea low-density well cementing well depth generally between 1000 meters～2000 meters, requires the thickening time all above 200min, and circulating temperature is below 30 degree; Because intensity and thickening time condition restriction, fluid additive only adds hardening accelerator, dispersion agent, skimmer to regulate its performance; Circulating temperature needs the adding retardant adjusting thickening time not add hardening accelerator more than 30 degree); Below the water retaining preparation method all carries out with reference to method in the embodiment 1 in the experiment.
Embodiment 4 1.52g/cm 3Grout (27 ℃)
Preparation grout: measure seawater 290g, hardening accelerator 6g, dispersion agent 10g, skimmer 1.5g with the grout jar and be made into mixing water; Be placed on that constant speed adds solid low density water mud material 615g (wherein oil well cement 400g, lightening material 100g, superfine cement 60g, ultrafine slag 46g, water retaining 9g (with embodiment 1)) for 4000 rev/mins while stirring successively on watt woods whisking appliance, be made into grout.
Embodiment 5 1.52g/cm 3Grout (35 ℃)
Preparation grout: measure seawater 290g, retardant 2g, dispersion agent 10g, skimmer 1.5g with the grout jar and be made into mixing water; Be placed on that constant speed adds solid low density water mud material 615g (wherein oil well cement 400g, lightening material 100g, superfine cement 60g, ultrafine slag 46g, water retaining 9g (with embodiment 1)) for 4000 rev/mins while stirring successively on watt woods whisking appliance, be made into grout.
Embodiment 6 1.52g/cm 3Grout (60 ℃)
Preparation grout: measure seawater 290g with the grout jar; Retardant 6g, dispersion agent 10g, skimmer 1.5g are made into mixing water; Be placed on watt woods whisking appliance 4000 rev/mins of constant speed and add solid low density water mud material 615g (wherein oil well cement 400g, lightening material 100g, superfine cement 60g, ultrafine slag 46g, preparation water retaining 9g) while stirring successively, be made into grout.
The test result such as the following table 4 of above embodiment 4,5,6 low-temperature high-strength low-freedom water low-density grouts.
Table 4 density 1.52g/cm 3Grout
Figure GSB00000719488500051
Figure GSB00000719488500061
Embodiment 7 1.50g/cm 3Grout (27 ℃)
Preparation grout: measure seawater 320g with the grout jar; Hardening accelerator 8g, dispersion agent 10g, skimmer 1.5g are made into mixing water; Be placed on that constant speed adds solid low density water mud material 615g (wherein oil well cement 400g, lightening material 100g, superfine cement 60g, ultrafine slag 46g, water retaining 9g (with embodiment 1)) for 4000 rev/mins while stirring successively on watt woods whisking appliance, be made into grout.
Embodiment 8 1.50g/cm 3Grout (35 ℃)
Preparation grout: measure seawater 320g with the grout jar; Retardant 2g, dispersion agent 10g, skimmer 1.5g are made into mixing water; Be placed on that constant speed adds solid low density water mud material 615g (wherein oil well cement 400g, lightening material 100g, superfine cement 60g, ultrafine slag 46g, water retaining 9g (with embodiment 1)) for 4000 rev/mins while stirring successively on watt woods whisking appliance, be made into grout.
Embodiment 9 1.50g/cm 3Grout (60 ℃)
Preparation grout: measure seawater 320g with the grout jar; Retardant 6g, dispersion agent 8g, skimmer 1.5g are made into mixing water; Be placed on that constant speed adds solid low density water mud material 615g (wherein oil well cement 400g, lightening material 100g, superfine cement 60g, ultrafine slag 46g, water retaining 9g (with embodiment 1)) for 4000 rev/mins while stirring successively on watt woods whisking appliance, be made into grout.
The test result such as the following table 5 of above embodiment 7,8,9 low-temperature high-strength low-freedom water low-density grouts.
Table 5 density 1.50g/cm 3Grout
Figure GSB00000719488500062
Figure GSB00000719488500071
Embodiment 10 1.48g/cm 3Grout (27 ℃)
Preparation grout: measure seawater 340g with the grout jar; Hardening accelerator 10g, dispersion agent 10g, skimmer 1.5g are made into mixing water; Be placed on that constant speed adds solid low density water mud material 615g (wherein oil well cement 400g, lightening material 100g, superfine cement 60g, ultrafine slag 46g, water retaining 9g (with embodiment 1)) for 4000 rev/mins while stirring successively on watt woods whisking appliance, be made into grout.
Embodiment 11 1.48g/cm 3Grout (35 ℃)
Preparation grout: measure seawater 340g with the grout jar; Retardant 2g, dispersion agent 10g, skimmer 1.5g are made into mixing water; Be placed on that constant speed adds solid low density water mud material 615g (wherein oil well cement 400g, lightening material 100g, superfine cement 60g, ultrafine slag 46g, water retaining 9g (with embodiment 1)) for 4000 rev/mins while stirring successively on watt woods whisking appliance, be made into grout.
Embodiment 12 1.48g/cm 3Grout (60 ℃)
Preparation grout: measure seawater 340g with the grout jar; Retardant 5g, dispersion agent 8g, skimmer 1.5g are made into mixing water; Be placed on that constant speed adds solid low density water mud material 615g (wherein oil well cement 400g, lightening material 100g, superfine cement 60g, ultrafine slag 46g, water retaining 9g (with embodiment 1)) for 4000 rev/mins while stirring successively on watt woods whisking appliance, be made into grout.
The test result such as the following table 6 of above embodiment 10,11,12 low-temperature high-strength low-freedom water low-density grouts.
Table 6 density 1.48g/cm 3Grout
Figure GSB00000719488500072
Figure GSB00000719488500081
This grout not only has higher low temperature intensity, and free water is all very little, and cementing job do not need specific installation, and conventional cementing equipment can fulfil assignment; Its thickening time can be regulated according to job requirements, and is more easy to control, and operational procedure is more simple.
In sum; More than be merely preferred embodiment of the present invention; Be not to be used to limit protection scope of the present invention therefore, all any modifications of within spirit of the present invention and principle, being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (3)

1. a high-strength low-freedom water low-density grout is characterized in that, comprises following component: seawater 29～36%, solid low density water mud material 61.7～68.6%, liquid additive 2.3～2.4%; The component of wherein said solid low density water mud material is: oil well cement 65%, lightening material 14～18%, superfine cement 10～8.5%, ultrafine slag 9.5～7%, water retaining 1.5%; Wherein, the component of said water retaining is: Z 150PH 60～90%, AM polymkeric substance 10～20%, linking agent 1～30%, dispersion agent 1～10%; The component of said liquid additive is: dispersion agent 41～84.2%, retardant 0～17.4%, hardening accelerator 0～51.3%, skimmer 7.7～15.8%; Said per-cent is weight percentage.
2. high-strength low-freedom water low-density grout as claimed in claim 1 is characterized in that, said oil well cement is the G class g cement.
3. high-strength low-freedom water low-density grout as claimed in claim 1 is characterized in that, said lightening material is a hollow float bead.
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CN101747880B (en) * 2009-12-29 2013-12-04 中国石油天然气集团公司 Deep-water low-temperature low-density early-strength cementing slurry for well cementation
CN103951320B (en) * 2014-04-16 2015-09-09 长安大学 A kind of mixing proportion design method of sea-water mud of retaining wall stable performance
CN105254226A (en) * 2015-10-01 2016-01-20 中国石油集团西部钻探工程有限公司 Elastic cement paste and preparation method thereof
CN106543994A (en) * 2016-09-30 2017-03-29 中国石油集团川庆钻探工程有限公司长庆固井公司 A kind of film-forming type oil-well cement filtrate reducer and preparation method thereof
CN110590251A (en) * 2019-09-11 2019-12-20 中国石油集团渤海钻探工程有限公司 Low-density high-strength cement paste
CN110526637A (en) * 2019-09-25 2019-12-03 嘉华特种水泥股份有限公司 A kind of ocean deepwater well cementation low-temperature high-early strength mortar architecture

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