WO2015152860A1 - Compositions et procédés pour la complétion de puits - Google Patents

Compositions et procédés pour la complétion de puits Download PDF

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Publication number
WO2015152860A1
WO2015152860A1 PCT/US2014/032310 US2014032310W WO2015152860A1 WO 2015152860 A1 WO2015152860 A1 WO 2015152860A1 US 2014032310 W US2014032310 W US 2014032310W WO 2015152860 A1 WO2015152860 A1 WO 2015152860A1
Authority
WO
WIPO (PCT)
Prior art keywords
silicate
cement
composition
combinations
hydraulic cement
Prior art date
Application number
PCT/US2014/032310
Other languages
English (en)
Inventor
Anthony Loiseau
Original Assignee
Schlumberger Canada Limited
Services Petroliers Schlumberger
Schlumberger Holdings Limited
Schlumberger Technology B.V.
Prad Research And Development Limited
Schlumberger Technology Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schlumberger Canada Limited, Services Petroliers Schlumberger, Schlumberger Holdings Limited, Schlumberger Technology B.V., Prad Research And Development Limited, Schlumberger Technology Corporation filed Critical Schlumberger Canada Limited
Priority to PCT/US2014/032310 priority Critical patent/WO2015152860A1/fr
Publication of WO2015152860A1 publication Critical patent/WO2015152860A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like

Definitions

  • compositions and methods for treating subterranean formations in particular, compositions and methods for cementing and completing wells in which the set cement may be exposed to carbon dioxide or sulfates.
  • the tubular body may comprise drillpipe, casing, liner, coiled tubing or combinations thereof.
  • the purpose of the tubular body is to act as a conduit through which desirable fluids from the well may travel and be collected.
  • the tubular body is normally secured in the well by a cement sheath.
  • the cement sheath provides mechanical support and hydraulic isolation between the zones or layers that the well penetrates. The latter function is important because it prevents hydraulic communication between zones that may result in contamination. For example, the cement sheath blocks fluids from oil or gas zones from entering the water table and polluting drinking water.
  • the cement sheath achieves hydraulic isolation because of its low permeability.
  • intimate bonding between the cement sheath and both the tubular body and borehole is necessary to prevent leaks.
  • the cement sheath can deteriorate and become permeable.
  • the bonding between the cement sheath and the tubular body or borehole may become compromised. Principal causes of deterioration and debonding include physical stresses associated with tectonic movements, temperature changes and chemical deterioration of the cement.
  • cement-sheath deterioration There have been several proposals to deal with the problems of cement-sheath deterioration.
  • One approach is to design the cement sheath to mechanically survive physical stresses that may be encountered during its lifetime.
  • Another approach is to employ additives that improve the physical properties of the set cement.
  • Amorphous metal fibers may be added to cements to improve the strength and impact resistance.
  • Addition of flexible materials may confer a degree of flexibility to the cement sheath.
  • Cement compositions may also be formulated to be less sensitive to temperature fluctuations during the setting process.
  • self-healing cement systems have been developed that are tailored to the mixing, pumping and curing conditions associated with cementing subterranean wells.
  • superabsorbent polymers may be added and may be encapsulated. If the permeability of the cement matrix rises, or the bonding between the cement sheath and the tubular body or borehole wall is disrupted, the superabsorbent polymer becomes exposed to formation fluids. Most formation fluids contain some water, and the polymer swells upon water contact. The swelling fills voids in the cement sheath, restoring the low cement-matrix permeability.
  • the polymer will swell and restore isolation. Rubber particles that swell when exposed to liquid hydrocarbons may also be incorporated in cements. Like the superabsorbent polymers, the swelling of the rubber particles restores and maintains zonal isolation.
  • Carbon sequestration is a geo-engineering technique for the long-term storage of carbon dioxide or other forms of carbon, for various purposes such as the mitigation of "global warming".
  • Carbon dioxide may be captured as a pure byproduct in processes related to petroleum refining or from the flue gases from power plants that employ fossil fuels. The gas is then usually injected into subsurface saline aquifers or depleted oil and gas reservoirs.
  • One of the challenges is to trap the carbon dioxide and prevent leakage back to the surface; maintaining a competent and impermeable cement sheath is a critical requirement.
  • the present disclosure describes improvements by providing cement systems that are resistant to carbon dioxide and sulfate waters encountered in a subterranean well.
  • compositions comprising water, a hydraulic cement and a silicate.
  • the silicate is encapsulated by a coating that isolates the silicate from the water and cement.
  • the encapsulated silicate is in the form of particles.
  • embodiments relate to methods for maintaining zonal isolation in a subterranean well having a borehole wall, at least one tubular body and a cement sheath occupying an annular space between the tubular body and the borehole wall.
  • a well cementing composition is prepared that comprises water, a hydraulic cement and a silicate.
  • the silicate is encapsulated by a coating that isolates the silicate from the water and cement.
  • the encapsulated silicate is in the form of particles.
  • the composition is placed in the annular space, then allowed to set and establish zonal isolation. Should zonal isolation become compromised, the coating is allowed to deteriorate, thereby releasing the silicate.
  • the silicate is allowed to react with calcium hydroxide in the set composition, thereby forming calcium silicate hydrate and reestablishing zonal isolation.
  • a concentration range listed or described as being useful, suitable, or the like is intended that any and every concentration within the range, including the end points, is to be considered as having been stated.
  • a range of from 1 to 10 is to be read as indicating each and every possible number along the continuum between about 1 and about 10.
  • Crystalline calcium hydroxide Ca(OH) 2 reacts with carbonic acid to form calcium carbonate, CaC0 3 .
  • the C-S-H gel also reacts to produce amorphous silica gel.
  • Sulfate attack is also a common form of cement deterioration. This attack occurs when cement is in contact with water containing S0 4 .
  • the attack is due to two principal reactions: the reaction of sodium sulfate (Na 2 S0 4 ) or magnesium sulfate (MgS0 4 ) with calcium hydroxide Ca(OH) 2 to form gypsum (Eqs. 5 and 6) and the reaction of the formed gypsum with calcium aluminate hydrates to form ettringite (Eq. 7).
  • Expansion due to ettringite formation causes tensile stresses to develop in the cement. If these stresses become greater than the cement tensile strength, the cement can crack. This failure by expansion is often observed in the civil engineering applications.
  • compositions and methods by which the calcium hydroxide content in set cement may be reduced before attack by C0 2 or S0 4 , but after the cement has set.
  • aqueous sodium silicate Na 2 Si0 3
  • Ca(OH) 2 is available for attack; moreover, formation of C-S-H is a beneficial result as C-S-H gel is a binding material natural to concrete.
  • the silicate may be encapsulated.
  • the capsules may be added during the preparation of the cement slurry, promoting even dispersion throughout the slurry.
  • An advantage of having the reaction occur after the curing of the cement is that the reactive material will be used only for the purpose of calcium hydroxide consumption.
  • C-S-H gel comprises roughly 65 wt% of fully hydrated Portland cement.
  • concentration of Ca(OH) 2 usually varies between 15 wt% and 20 wt%.
  • the silicate concentration may also be between 2.0 moles and 2.7 moles of set cement to achieve full consumption Ca(OH) 2 .
  • Other hydraulic cement blends of the disclosure represent a wider range of Ca(OH)2 concentrations.
  • the silicate concentration may be between 0.5 and 3.0 moles per kg of hydraulic cement, or between 2.0 and 2.7 moles per kg of hydraulic cement.
  • compositions comprising water, a hydraulic cement and a silicate.
  • the silicate is encapsulated by a coating that isolates the silicate from the water and cement.
  • the encapsulated silicate is in the form of particles.
  • embodiments relate to methods for maintaining zonal isolation in a subterranean well having a borehole wall, at least one tubular body and a cement sheath occupying an annular space between the tubular body and the borehole wall.
  • a well cementing composition is prepared that comprises water, a hydraulic cement and a silicate.
  • the silicate is encapsulated by a coating that isolates the silicate from the water and cement.
  • the encapsulated silicate is in the form of particles.
  • the composition is placed in the annular space, then allowed to set and establish zonal isolation. Should zonal isolation become compromised, the coating is allowed to deteriorate, thereby releasing the silicate.
  • the silicate is allowed to react with calcium hydroxide in the set composition, thereby forming calcium silicate hydrate and reestablishing zonal isolation.
  • Zonal isolation may be compromised by fracturing of the cement sheath, exposure to carbon dioxide, or exposure to sulfates or combinations thereof. Coating deterioration may result from mechanical stress, exposure to heat, dissolution, swelling or degradation or combinations thereof.
  • the hydraulic cement may comprise portland cement, lime-silica blends, lime-fly ash blends, lime-blast furnace slag blends or zeolites or combinations thereof.
  • the silicate may comprise one or more alkali silicates, one or more alkaline-earth silicates or methyl silicate or combinations thereof.
  • the coating may comprise an epoxy resin, a phenolic resin, a furan resin, a cellulosic polymer, polyvinylidene chloride, poly(methyl methacrylate), polylactic acid, polyglycolic acid, polyvinylalcohol, urea-formaldehyde polymers, silicones, gelatins, lipids, styrene acrylic resins, or waxes or combinations thereof.
  • the encapsulated particles may have diameters between 1 micron and 1000 microns.
  • compositions may further comprise accelerators, retarders, extenders, weighting agents, dispersants, fluid-loss control agents, lost- circulation control agents, antifoam agents, gas-generating agents or fibers or combinations thereof.
  • the viscosity of the composition during placement in the well may be lower than 1000 cP at a shear rate of 100 s -1 .

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

L'invention concerne des compositions de ciment comprenant de l'eau, un ciment hydraulique et un silicate encapsulé. Le silicate peut être libéré des capsules par une exposition à une contrainte mécanique, la chaleur, une dissolution, un gonflement ou une dégradation de revêtement. Lors de la libération, le silicate réagit avec de l'hydroxyde de calcium dans la matrice de ciment pour former un hydrate de silicate de calcium. La consommation d'hydroxyde de calcium rend le ciment durci plus résistant à la détérioration lors d'une exposition à du dioxyde de carbone, à des sulfates ou aux deux.
PCT/US2014/032310 2014-03-31 2014-03-31 Compositions et procédés pour la complétion de puits WO2015152860A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2014/032310 WO2015152860A1 (fr) 2014-03-31 2014-03-31 Compositions et procédés pour la complétion de puits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2014/032310 WO2015152860A1 (fr) 2014-03-31 2014-03-31 Compositions et procédés pour la complétion de puits

Publications (1)

Publication Number Publication Date
WO2015152860A1 true WO2015152860A1 (fr) 2015-10-08

Family

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Application Number Title Priority Date Filing Date
PCT/US2014/032310 WO2015152860A1 (fr) 2014-03-31 2014-03-31 Compositions et procédés pour la complétion de puits

Country Status (1)

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WO (1) WO2015152860A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018156114A1 (fr) * 2017-02-22 2018-08-30 Halliburton Energy Services, Inc. Ciments à base de silice et de chaux à faible teneur en ciment portland
CN113811518A (zh) * 2019-04-02 2021-12-17 含氧低碳投资有限责任公司 涉及使用二氧化碳作为反应物的水泥的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036301A (en) * 1974-10-29 1977-07-19 Standard Oil Company (Indiana) Process and composition for cementing casing in a well
US7353870B2 (en) * 2005-09-09 2008-04-08 Halliburton Energy Services, Inc. Methods of using settable compositions comprising cement kiln dust and additive(s)
US7493968B2 (en) * 2004-07-02 2009-02-24 Halliburton Energy Services, Inc. Compositions comprising melt-processed inorganic fibers and methods of using such compositions
US7789146B2 (en) * 2007-07-25 2010-09-07 Schlumberger Technology Corporation System and method for low damage gravel packing
US20100270016A1 (en) * 2009-04-27 2010-10-28 Clara Carelli Compositions and Methods for Servicing Subterranean Wells

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036301A (en) * 1974-10-29 1977-07-19 Standard Oil Company (Indiana) Process and composition for cementing casing in a well
US7493968B2 (en) * 2004-07-02 2009-02-24 Halliburton Energy Services, Inc. Compositions comprising melt-processed inorganic fibers and methods of using such compositions
US7353870B2 (en) * 2005-09-09 2008-04-08 Halliburton Energy Services, Inc. Methods of using settable compositions comprising cement kiln dust and additive(s)
US7789146B2 (en) * 2007-07-25 2010-09-07 Schlumberger Technology Corporation System and method for low damage gravel packing
US20100270016A1 (en) * 2009-04-27 2010-10-28 Clara Carelli Compositions and Methods for Servicing Subterranean Wells

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018156114A1 (fr) * 2017-02-22 2018-08-30 Halliburton Energy Services, Inc. Ciments à base de silice et de chaux à faible teneur en ciment portland
CN110192003A (zh) * 2017-02-22 2019-08-30 哈里伯顿能源服务公司 低波特兰二氧化硅-石灰水泥
GB2573892A (en) * 2017-02-22 2019-11-20 Halliburton Energy Services Inc Low portland silica-lime cements
GB2573892B (en) * 2017-02-22 2022-03-02 Halliburton Energy Services Inc Low portland silica-lime cements
US11434746B2 (en) 2017-02-22 2022-09-06 Halliburton Energy Services, Inc. Low Portland silica-lime cements
US11828159B2 (en) 2017-02-22 2023-11-28 Halliburton Energy Services, Inc. Low portland silica-lime cements
CN113811518A (zh) * 2019-04-02 2021-12-17 含氧低碳投资有限责任公司 涉及使用二氧化碳作为反应物的水泥的方法

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