WO2006018598A2 - Stable and biodegradable foamed cement slurries, additives and methods - Google Patents

Stable and biodegradable foamed cement slurries, additives and methods Download PDF

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Publication number
WO2006018598A2
WO2006018598A2 PCT/GB2005/002974 GB2005002974W WO2006018598A2 WO 2006018598 A2 WO2006018598 A2 WO 2006018598A2 GB 2005002974 W GB2005002974 W GB 2005002974W WO 2006018598 A2 WO2006018598 A2 WO 2006018598A2
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WO
WIPO (PCT)
Prior art keywords
slurry
cement
capryl
foaming
foamed
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Application number
PCT/GB2005/002974
Other languages
French (fr)
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WO2006018598A3 (en
Inventor
Jiten Chatterji
Darrell Chad Brenneis
Bobby J. King
Original Assignee
Halliburton Energy Services, Inc.
Wain, Christopher, Paul
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Application filed by Halliburton Energy Services, Inc., Wain, Christopher, Paul filed Critical Halliburton Energy Services, Inc.
Priority to CA2576927A priority Critical patent/CA2576927C/en
Publication of WO2006018598A2 publication Critical patent/WO2006018598A2/en
Publication of WO2006018598A3 publication Critical patent/WO2006018598A3/en

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Classifications

    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
    • 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
    • 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
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
    • C04B2103/0072—Biodegradable materials
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
    • C04B2103/0074—Anti-static agents
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/40—Surface-active agents, dispersants
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/48—Foam stabilisers

Definitions

  • the present invention relates to foamed cement slurries and additives as well as methods of cementing utilizing the foamed cement slurries and additives.
  • Foamed hydraulic cement slurries are commonly utilized in forming structures above and below ground. In forming the structures, the foamed hydraulic cement composition is placed into a form or other location to be cemented and allowed to set therein.
  • foamed cement slurries have included foaming and stabilizing additives which are not biodegradable and which do not stabilize foamed cement compositions at high temperatures.
  • foamed hydraulic cement slurries which include biodegradable foaming and stabilizing additives that remain stable at high temperatures.
  • foamed hydraulic cement slurries are often pumped into locations in the wells to be cemented and allowed to set therein.
  • foamed cement slurries are often utilized. That is, the foamed cement slurries are pumped into the annular spaces between the walls of the well bores and the exterior surfaces of pipe strings disposed therein.
  • the foamed cement slurries are compressible which prevents the inflow of undesirable fluids into the annular spaces and the foamed cement slurries set therein whereby annular sheaths of hardened cement are formed therein.
  • the annular cement sheaths physically support and position the pipe strings in the well bores and bond the exterior surfaces of the pipe strings to the walls of the well bores whereby the undesirable migration of fluids between zones or formations penetrated by the well bores is prevented.
  • a stable foamed cement slurry of the present invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a biodegradable foaming and stabilizing additive comprising a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant.
  • the present invention provides stable and biodegradable foamed cement slurries, biodegradable additives for foaming and stabilizing cement slurries, methods of cementing using biodegradable foamed cement slurries and placing the foamed cement slurries in locations to be cemented and methods of cementing with biodegradable foamed cement slurries and placing the foamed cement slurries in subterranean zones penetrated by well bores.
  • a preferred method of this invention comprises the steps of: preparing or providing a foamed cement slurry comprising a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a biodegradable foaming and stabilizing additive comprising a mixture of capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant; placing the foamed cement slurry in a location to be cemented; and allowing the cement slurry to set.
  • the biodegradable foaming and stabilizing additive comprising a mixture of 95% by weight capryl/capramido propyl betaine surfactant and 5% by weight capryl/capramido propyl dimethyl amine oxide surfactant was evaluated in cement slurries comprising Class H cement in 40% by weight fresh water, salt water containing 37% sodium chloride and seawater.
  • the cement slurries containing the biodegradable foaming and stabilizing additive were foamed to lower densities and cured at 14O 0 F for 72 hours.
  • the resulting cured foamed cements were tested for compressive strength and for densities after setting at the top, middle and bottom sections of the set foamed cements. These tests are set forth in Table I below.
  • Table II shows that the biodegradable foaming and stabilizing additive of this invention functions well in MicroMatrix cement slurries, calcium aluminous cement slurries, slag cement slurries and Class F fly ash and hydrated lime cement slurries.
  • Foamed cement slurries are extensively used in off-shore operations.
  • a cement slurry comprising fresh water and Class H cement having a density of 16.49 lb/gal was foamed to a density of 10.77 lb/gal.
  • the foamed cement was conditioned for 1 hour at 5O 0 F and then cured for 72 hours at 55 0 F.
  • the 72 hour compressive strength was only 88.5 and the top, middle and bottom densities after set were 10.20/11.54/12.34 indicating that the foamed slurry was not stable.
  • a cement slurry comprising fresh water, Class H cement and amorphous silica in an amount of 5% by weight of the cement was prepared having a 16.33 lb/gal density.
  • the slurry was foamed to 10.7 lb/gal at 8O 0 F 3 conditioned at 5O 0 F for 1 hour and cured for 72 hours at 55 0 F.
  • the cured sample was stable and had an average weight of 11.36 lb/gal.
  • a cement slurry was prepared comprising fresh water, Class H cement, crystalline silica present in an amount of 35% by weight of the cement, amorphous silica present in an amount of 15% by weight of the cement and a cement retarder present in an amount of 0.6% by weight of cement.
  • the slurry had a density of 16.29 lb/gal and it was foamed to a density of 11.5 lb/gal.
  • the slurry was heated to 200 0 F at 1000 psi using a Mini-MACS Analyzer to generate foam under field conditions.
  • the Mmi-MACS Analyzer was modified to prepare the foam cement under pressure.
  • the modifications consisted of a special tapered slurry cup with a special seal system, high speed rotation of the paddle inside the slurry cup and a nitrogen pressure source.
  • the unfoamed slurry was placed into the special slurry cup and sealed.
  • the slurry weight is the amount that will provide the desired slurry density for the volume of the cup.
  • the slurry cup was placed into the modified Mini-MACS Analyzer and stirred at 1000 rpm and 10 minutes with 1000 psi nitrogen pressure applied. The speed was then reduced to 150 rpm (standard API stirred speed) and the temperature increased to a bottom hole circulating temperature of 200 0 F.
  • the stirring was stopped and the temperature was increased to 25O 0 F, the bottom hole static temperature at the end of 4 hours from the start of the test.
  • the Mini-MACS Analyzer was cooled to room temperature to allow inspection of the set foamed slurry. The nitrogen pressure was released very slowly, normally over a 2 to 4 hour period of time. After the Mini-MACS Analyzer was cooled and pressure was released, the slurry cup was removed, opened, and the slurry was pressed from the slurry cup. The set foamed slurry was then used to determine the slurry density.

Abstract

The present invention relates to stable and biodegradable foamed cement slurries, additives and methods. A foamed cement slurry of the invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a biodegradable foaming and stabilizing additive comprising a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant.

Description

STABLE AND BIODEGRADABLE FOAMED CEMENT SLURRIES, ADDITIVES AND METHODS
BACKGROUND OF THE INVENTION
1. FIELD OF THE INVENTION
The present invention relates to foamed cement slurries and additives as well as methods of cementing utilizing the foamed cement slurries and additives.
2. DESCRIPTION OF THE PRIOR ART
Foamed hydraulic cement slurries are commonly utilized in forming structures above and below ground. In forming the structures, the foamed hydraulic cement composition is placed into a form or other location to be cemented and allowed to set therein. Heretofore, foamed cement slurries have included foaming and stabilizing additives which are not biodegradable and which do not stabilize foamed cement compositions at high temperatures. Thus, there is a need for foamed hydraulic cement slurries which include biodegradable foaming and stabilizing additives that remain stable at high temperatures.
In the construction and repair of wells such as oil and gas wells, foamed hydraulic cement slurries are often pumped into locations in the wells to be cemented and allowed to set therein. In primary cementing, foamed cement slurries are often utilized. That is, the foamed cement slurries are pumped into the annular spaces between the walls of the well bores and the exterior surfaces of pipe strings disposed therein. The foamed cement slurries are compressible which prevents the inflow of undesirable fluids into the annular spaces and the foamed cement slurries set therein whereby annular sheaths of hardened cement are formed therein. The annular cement sheaths physically support and position the pipe strings in the well bores and bond the exterior surfaces of the pipe strings to the walls of the well bores whereby the undesirable migration of fluids between zones or formations penetrated by the well bores is prevented.
SUMMARY OF THE INVENTION
The present invention provides highly stable biodegradable foamed cement slurries, additives and methods of cementing which meet the needs described above and overcome the deficiencies of the prior art. A stable foamed cement slurry of the present invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a biodegradable foaming and stabilizing additive comprising a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant.
A biodegradable additive for foaming and stabilizing a cement slurry of this invention comprises a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant.
A method of cementing of this invention comprises the steps of preparing or providing a foamed cement slurry comprising a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a biodegradable foaming and stabilizing additive comprising a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant. The foamed cement slurry is placed in a location to be cemented and allowed to set therein.
A method of cementing a subterranean zone penetrated by a well bore of this invention comprises providing or preparing a foamed cement slurry comprising a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a biodegradable foaming and stabilizing additive comprising a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant. The foamed cement slurry is placed in the subterranean zone to be cemented by way of the well bore and then allowed to set into a hard impermeable mass.
The objects, features and advantages of the present invention will be readily apparent to those skilled in the art upon a reading of the description of preferred embodiments which follows.
DESCRIPTION OF PREFERRED EMBODIMENTS
The present invention provides stable and biodegradable foamed cement slurries, biodegradable additives for foaming and stabilizing cement slurries, methods of cementing using biodegradable foamed cement slurries and placing the foamed cement slurries in locations to be cemented and methods of cementing with biodegradable foamed cement slurries and placing the foamed cement slurries in subterranean zones penetrated by well bores.
A stable and biodegradable foamed cement slurry of this invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam, and a biodegradable foaming and stabilizing additive. The additive comprises a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant.
A variety of hydraulic cements can be utilized in accordance with the present invention including, but not limited to, Portland cements, slag cements, silica cements, pozzolana cements and aluminous cements. Of these, Portland cements are generally preferred. Portland cements of the types defined and described in API Specification for Materials and Testing for Well Cements, API Specification 1OB, 22nd Edition, dated December 1, 1997 of the American Petroleum Institute are particularly suitable. Preferred API Portland cements include Classes A, B, C, G, and H with API Classes G and H being more preferred and Class H being the most preferred.
The water in the foamed cement slurry can be fresh water, unsaturated salt solution or saturated salt solutions. Generally, the water in the foamed cement slurry is present in an amount in the range of from about 35% to about 100% by weight of the hydraulic cement therein.
The gas utilized to foam the cement slurry can be air or nitrogen with nitrogen being preferred. Generally, the gas is present in the foamed cement slurry in an amount in the range of from about 10% to about 80% by volume of the slurry.
The biodegradable foaming and stabilizing additive is a mixture of 95% by weight capryl/capramido propyl betaine surfactant and 5% by weight capryl/capramido propyl dimethyl amine oxide surfactant. The biodegradable foaming and stabilizing additive is generally present in an amount in the range of from about 0.8% to about 10% by volume of the water therein.
The biodegradable foaming and stabilizing additive of this invention facilitates the foaming of the cement slurry and stabilizes the foamed cement slurry, i.e., prevents the foam from dissipating, at temperatures in the range of from about 5O0F to about 4000F.
A preferred stable foamed cement slurry of this invention comprises: a hydraulic cement; sufficient water to form a slurry; sufficient gas to form a foam; and a biodegradable foaming and stabilizing additive comprising a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant. A preferred biodegradable additive of this invention for foaming and stabilizing a cement slurry comprises a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant.
A preferred method of this invention comprises the steps of: preparing or providing a foamed cement slurry comprising a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a biodegradable foaming and stabilizing additive comprising a mixture of capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant; placing the foamed cement slurry in a location to be cemented; and allowing the cement slurry to set.
Another preferred method of cementing a subterranean zone penetrated by a well bore comprises the steps of: preparing or providing a foamed cement slurry comprising a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a biodegradable foaming and stabilizing additive comprising a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant; placing the foamed cement slurry in the subterranean zone by way of the well bore; and allowing the foamed cement slurry to set into a hard impermeable mass.
In order to further illustrate the stable foamed cement slurries of this invention and the biodegradable additive for foaming and stabilizing the cement slurries, the following examples are given.
EXAMPLE l
The biodegradable foaming and stabilizing additive comprising a mixture of 95% by weight capryl/capramido propyl betaine surfactant and 5% by weight capryl/capramido propyl dimethyl amine oxide surfactant was evaluated in cement slurries comprising Class H cement in 40% by weight fresh water, salt water containing 37% sodium chloride and seawater. The cement slurries containing the biodegradable foaming and stabilizing additive were foamed to lower densities and cured at 14O0F for 72 hours. The resulting cured foamed cements were tested for compressive strength and for densities after setting at the top, middle and bottom sections of the set foamed cements. These tests are set forth in Table I below. TABLE I
Figure imgf000006_0001
Mixture of 95% by weight capryl/capramido propyl betaine surfactant and 5% by weight capryl/capramido propyl dimethyl amine oxide surfactant.
From Table I, it can be seen that the cement slurries containing fresh water, saturated salt water and seawater had good compressive strengths and top, middle and bottom densities showing good stability.
EXAMPLE 2
Various cement slurries mixed with fresh water and the biodegradable foaming and stabilizing additive of this invention having various densities were foamed, cured at 14O0F for 72 hours and tested for compressive strength and top, middle and bottom densities after set. The results of these tests are set forth in Table II below.
TABLE II
Figure imgf000007_0001
Mixture of 95% by weight capryl/capramido propyl betaine surfactant and 5% by weight capryl/capramido propyl dimethyl amine oxide surfactant.
Table II shows that the biodegradable foaming and stabilizing additive of this invention functions well in MicroMatrix cement slurries, calcium aluminous cement slurries, slag cement slurries and Class F fly ash and hydrated lime cement slurries.
EXAMPLE 3
Foamed cement slurries are extensively used in off-shore operations. In order to evaluate the extent of retardation properties of the biodegradable foaming and stabilizing additive of this invention, a cement slurry comprising fresh water and Class H cement having a density of 16.49 lb/gal was foamed to a density of 10.77 lb/gal. The foamed cement was conditioned for 1 hour at 5O0F and then cured for 72 hours at 550F. The 72 hour compressive strength was only 88.5 and the top, middle and bottom densities after set were 10.20/11.54/12.34 indicating that the foamed slurry was not stable. EXAMPLE 4
A cement slurry comprising fresh water, Class H cement and amorphous silica in an amount of 5% by weight of the cement was prepared having a 16.33 lb/gal density. The slurry was foamed to 10.7 lb/gal at 8O0F3 conditioned at 5O0F for 1 hour and cured for 72 hours at 550F. The cured sample was stable and had an average weight of 11.36 lb/gal.
EXAMPLE 5
A cement slurry was prepared comprising fresh water, Class H cement, crystalline silica present in an amount of 35% by weight of the cement, amorphous silica present in an amount of 15% by weight of the cement and a cement retarder present in an amount of 0.6% by weight of cement. The slurry had a density of 16.29 lb/gal and it was foamed to a density of 11.5 lb/gal. The slurry was heated to 2000F at 1000 psi using a Mini-MACS Analyzer to generate foam under field conditions. The Mmi-MACS Analyzer was modified to prepare the foam cement under pressure. The modifications consisted of a special tapered slurry cup with a special seal system, high speed rotation of the paddle inside the slurry cup and a nitrogen pressure source. The unfoamed slurry was placed into the special slurry cup and sealed. The slurry weight is the amount that will provide the desired slurry density for the volume of the cup. The slurry cup was placed into the modified Mini-MACS Analyzer and stirred at 1000 rpm and 10 minutes with 1000 psi nitrogen pressure applied. The speed was then reduced to 150 rpm (standard API stirred speed) and the temperature increased to a bottom hole circulating temperature of 2000F. Upon reaching BHCT (time for the cement slurry to reach the bottom hole conditions), the stirring was stopped and the temperature was increased to 25O0F, the bottom hole static temperature at the end of 4 hours from the start of the test. After curing for 72 hours, the Mini-MACS Analyzer was cooled to room temperature to allow inspection of the set foamed slurry. The nitrogen pressure was released very slowly, normally over a 2 to 4 hour period of time. After the Mini-MACS Analyzer was cooled and pressure was released, the slurry cup was removed, opened, and the slurry was pressed from the slurry cup. The set foamed slurry was then used to determine the slurry density. This was done by taking sections from top, middle and bottom of the set slurry and measuring the densities. The densities of the set foamed cement at the top, middle and bottom were 9.94 lb/gal, 10.65 lb/gal and 11 lb/gal showing that the cement slurry was stable.
Thus, the present invention is well adapted to carry out the objects and attain the ends and advantages mentioned as well as those inherent therein. While numerous changes may be made by those skilled in the art, such changes are encompassed within the spirit of this invention as defined by the appended claims.

Claims

What is claimed is:
1. A foamed cement slurry comprising:
a hydraulic cement;
sufficient water to form a slurry;
sufficient gas to form a foam; and
a foaming and stabilizing additive comprising a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant.
2. The foamed cement slurry of claim 1 wherein the hydraulic cement comprises Portland cement, slag cement, silica cement, pozzolana cement or aluminous cement.
3. The foamed cement slurry of claim 1 wherein the water comprises fresh water, unsaturated salt solutions or saturated salt solutions.
4. The foamed cement slurry of claim 1 wherein the water is present in an amount in the range of from about 35% to about 100% by weight of hydraulic cement therein.
5. The foamed cement slurry of claim 1 wherein the gas comprises air or nitrogen.
6. The foamed cement slurry of claim 1 wherein the gas is present in an amount in the range of from about 10% to about 80% by volume of the cement slurry.
7. The foamed cement slurry of claim 1 wherein the foaming and stabilizing additive is a mixture of 95% by weight capryl/capramido propyl betaine surfactant and 5% by weight capryl/capramido propyl dimethyl amine oxide surfactant.
8. The foamed cement slurry of claim 1 wherein the foaming and stabilizing additive is present in an amount in the range of from about 0.8% to about 10% by volume of the water therein.
9. The foamed cement slurry of claim 1 wherein the foaming and stabilizing additive stabilizes the slurry at temperatures in the range of from about 50°F to about 4000F.
10. The foamed cement slurry of claim 1 wherein the foaming and stabilizing additive is biodegradable.
11. An additive for foaming and stabilizing a cement slurry comprising a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant.
12. The additive of claim 11 wherein the capryl/capramido propyl betaine surfactant is present in the mixture in an amount of about 95% by weight and the capryl/capramido propyl dimethyl amine oxide surfactant is present in an amount of about 5% by weight.
13. The additive of claim 11 wherein the mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant stabilizes a foamed cement slurry at temperatures in the range of from about 5O0F to about 4000F.
14. The additive of claim 11 wherein the additive is biodegradable.
15. A method of cementing comprising the steps of:
preparing or providing a foamed cement slurry comprising a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a foaming and stabilizing additive comprising a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant;
placing the foamed cement slurry in a location to be cemented; and
allowing the cement slurry to set.
16. The method of claim 15 wherein the hydraulic cement in the slurry comprises Portland cement, slag cement, silica cement, pozzolana cement or aluminous cement.
17. The method of claim 15 wherein the water in the slurry comprises fresh water, unsaturated salt solutions or saturated salt solutions.
18. The method of claim 15 wherein the water in the slurry is present in an amount in the range of from about 35% to about 100% by weight of hydraulic cement therein.
19. The method of claim 15 wherein the gas in the slurry comprises air or nitrogen.
20. The method of claim 15 wherein the gas in the slurry is present in an amount in the range of from about 10% to about 80% by volume of the cement slurry.
21. The method of claim 15 wherein the foaming and stabilizing additive in the slurry is a mixture of 95% by weight capryl/capramido propyl betaine surfactant and 5% by weight capryl/capramido propyl dimethyl amine oxide surfactant.
22. The method of claim 15 wherein the foaming and stabilizing additive in the slurry is present in an amount in the range of from about 0.8% to about 10% by volume of the water therein.
23. The method of claim 15 wherein the foaming and stabilizing additive stabilizes the slurry at temperatures in the range of from about 5O0F to about 4000F.
24. The method of claim 15 wherein the foaming and stabilizing additive is biodegradable.
25. The method of claim 15 wherein the foamed cement slurry is placed in a subterranean formation.
26. A method of cementing a subterranean zone penetrated by a well bore comprising the steps of:
preparing or providing a foamed cement slurry comprising a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a biodegradable foaming and stabilizing additive comprising a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant;
placing the foamed cement slurry in the subterranean zone by way of the well bore; and
allowing the foamed cement slurry to set.
27. The method of claim 26 wherein the hydraulic cement in the slurry comprises Portland cement, slag cement, silica cement, pozzolana cement or aluminous cement.
28. The method of claim 26 wherein the water in the slurry comprises fresh water, unsaturated salt solutions or saturated salt solutions.
29. The method of claim 26 wherein the water in the slurry is present in an amount in the range of from about 35% to about 100% by weight of hydraulic cement therein.
30. The method of claim 26 wherein the gas in the slurry comprises air or nitrogen.
31. The method of claim 26 wherein the gas in the slurry is present in an amount in the range of from about 10% to about 80% by volume of the cement slurry.
32. The method of claim 26 wherein the biodegradable foaming and stabilizing additive in the slurry is a mixture of 95% by weight capryl/capramido propyl betaine surfactant and 5% by weight capryl/capramido propyl dimethyl amine oxide surfactant.
33. The method of claim 26 wherein the biodegradable foaming and stabilizing additive in the slurry is present in an amount in the range of from about 0.8% to about 10% by volume of the water therein.
34. The method of claim 26 wherein the biodegradable foaming and stabilizing additive stabilizes the slurry at temperatures in the range of from about 5O0F to about 4000F.
PCT/GB2005/002974 2004-08-19 2005-07-29 Stable and biodegradable foamed cement slurries, additives and methods WO2006018598A2 (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7413014B2 (en) * 2003-12-19 2008-08-19 Halliburton Energy Services, Inc. Foamed fly ash cement compositions and methods of cementing
US7694738B2 (en) * 2005-12-01 2010-04-13 Halliburton Energy Services, Inc. Methods of using wellbore sealant compositions containing cationic latexes
US7687440B2 (en) * 2005-12-01 2010-03-30 Halliburton Energy Services, Inc. Wellbore sealant compositions containing cationic latexes
US8287640B2 (en) 2008-09-29 2012-10-16 Clearwater International, Llc Stable foamed cement slurry compositions and methods for making and using same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5679150A (en) * 1996-08-16 1997-10-21 Kerkar; Awdhoot Vasant Drying shrinkage cement admixture
US6063738A (en) * 1999-04-19 2000-05-16 Halliburton Energy Services, Inc. Foamed well cement slurries, additives and methods
US6668927B1 (en) * 2003-03-21 2003-12-30 Halliburton Energy Services, Inc. Well completion foamed spacer fluids and methods

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5275654A (en) * 1989-02-24 1994-01-04 Shell Oil Corporation Cement sealing
US5147565A (en) 1990-12-12 1992-09-15 Halliburton Company Foamed well cementing compositions and methods
US5133409A (en) 1990-12-12 1992-07-28 Halliburton Company Foamed well cementing compositions and methods
US5314022A (en) * 1992-10-22 1994-05-24 Shell Oil Company Dilution of drilling fluid in forming cement slurries
US5322124A (en) * 1992-10-22 1994-06-21 Shell Oil Company Squeeze cementing
US5379843A (en) * 1992-10-22 1995-01-10 Shell Oil Company Side-tracking cement plug
US5588489A (en) 1995-10-31 1996-12-31 Halliburton Company Lightweight well cement compositions and methods
US5696059A (en) 1996-01-31 1997-12-09 Halliburton Company Methods of preventing well cement stress failure
US5897699A (en) 1997-07-23 1999-04-27 Halliburton Energy Services, Inc. Foamed well cement compositions, additives and methods
AU738096B2 (en) 1997-08-15 2001-09-06 Halliburton Energy Services, Inc. Light weight high temperature well cement compositions and methods
US6336505B1 (en) 1999-07-15 2002-01-08 Halliburton Energy Services, Inc. Cementing casing strings in deep water offshore wells
US6454004B2 (en) 1999-07-15 2002-09-24 Halliburton Energy Services, Inc. Cementing casing strings in deep water offshore wells
US6273191B1 (en) 1999-07-15 2001-08-14 Halliburton Energy Services, Inc. Cementing casing strings in deep water offshore wells
US6478868B1 (en) 1999-08-26 2002-11-12 Halliburton Energy Services, Inc. Early-enhanced strength cement compositions and methods
US6210476B1 (en) 1999-09-07 2001-04-03 Halliburton Energy Services, Inc. Foamed cement compositions and methods
US6244343B1 (en) 2000-03-09 2001-06-12 Halliburton Energy Services, Inc. Cementing in deep water offshore wells
US6227294B1 (en) 2000-05-12 2001-05-08 Halliburton Energy Services, Inc. Methods of cementing subterranean zones
US6390195B1 (en) 2000-07-28 2002-05-21 Halliburton Energy Service,S Inc. Methods and compositions for forming permeable cement sand screens in well bores
US6202751B1 (en) 2000-07-28 2001-03-20 Halliburton Energy Sevices, Inc. Methods and compositions for forming permeable cement sand screens in well bores
US6457524B1 (en) 2000-09-15 2002-10-01 Halliburton Energy Services, Inc. Well cementing compositions and methods
US6220354B1 (en) 2000-10-24 2001-04-24 Halliburton Energy Services, Inc. High strength foamed well cement compositions and methods
US6367550B1 (en) 2000-10-25 2002-04-09 Halliburton Energy Service, Inc. Foamed well cement slurries, additives and methods
CA2443390C (en) * 2001-04-16 2009-12-15 Halliburton Energy Services, Inc. Methods of treating subterranean zones penetrated by well bores
US6662873B1 (en) 2001-12-11 2003-12-16 Halliburton Energy Services, Inc. Methods and compositions for forming permeable cement sand screens in wells
US6698519B2 (en) 2002-01-18 2004-03-02 Halliburton Energy Services, Inc. Methods of forming permeable sand screens in well bores
US6555505B1 (en) 2002-03-08 2003-04-29 Halliburton Energy Services, Inc. Foamed acidizing fluids, additives and methods of acidizing subterranean zones
US6715553B2 (en) 2002-05-31 2004-04-06 Halliburton Energy Services, Inc. Methods of generating gas in well fluids
US6722434B2 (en) 2002-05-31 2004-04-20 Halliburton Energy Services, Inc. Methods of generating gas in well treating fluids
US6858566B1 (en) * 2002-05-31 2005-02-22 Halliburton Energy Services, Inc. Methods of generating gas in and foaming well cement compositions
US6722433B2 (en) 2002-06-21 2004-04-20 Halliburton Energy Services, Inc. Methods of sealing expandable pipe in well bores and sealing compositions
US6516883B1 (en) 2002-07-25 2003-02-11 Halliburton Energy Services, Inc. Methods of cementing pipe in well bores and low density cement compositions therefor
US6619399B1 (en) 2003-03-12 2003-09-16 Halliburton Energy Services, Inc. Foamed compositions and methods of use in subterranean zones
US6689208B1 (en) 2003-06-04 2004-02-10 Halliburton Energy Services, Inc. Lightweight cement compositions and methods of cementing in subterranean formations
US6739806B1 (en) 2003-06-13 2004-05-25 Halliburton Energy Services, Inc. Cement compositions with improved fluid loss characteristics and methods of cementing in subterranean formations

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5679150A (en) * 1996-08-16 1997-10-21 Kerkar; Awdhoot Vasant Drying shrinkage cement admixture
US6063738A (en) * 1999-04-19 2000-05-16 Halliburton Energy Services, Inc. Foamed well cement slurries, additives and methods
US6668927B1 (en) * 2003-03-21 2003-12-30 Halliburton Energy Services, Inc. Well completion foamed spacer fluids and methods

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US6953505B1 (en) 2005-10-11
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CA2576927A1 (en) 2006-02-23

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