WO2017087263A1 - Compositions et procédés pour l'entretien de puits souterrains - Google Patents

Compositions et procédés pour l'entretien de puits souterrains Download PDF

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Publication number
WO2017087263A1
WO2017087263A1 PCT/US2016/061469 US2016061469W WO2017087263A1 WO 2017087263 A1 WO2017087263 A1 WO 2017087263A1 US 2016061469 W US2016061469 W US 2016061469W WO 2017087263 A1 WO2017087263 A1 WO 2017087263A1
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WO
WIPO (PCT)
Prior art keywords
fibers
fluid
vinyl
wellbore
surfactants
Prior art date
Application number
PCT/US2016/061469
Other languages
English (en)
Inventor
Diankui Fu
Bipin Jain
Soo Hui Goh
Original Assignee
Schlumberger Technology Corporation
Schlumberger Canada Limited
Services Petroliers Schlumberger
Schlumberger Technology B.V.
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
Priority claimed from US14/943,633 external-priority patent/US20160122620A1/en
Application filed by Schlumberger Technology Corporation, Schlumberger Canada Limited, Services Petroliers Schlumberger, Schlumberger Technology B.V. filed Critical Schlumberger Technology Corporation
Publication of WO2017087263A1 publication Critical patent/WO2017087263A1/fr

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Classifications

    • 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
    • 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
    • C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • 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
    • C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • C09K8/536—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning characterised by their form or by the form of their components, e.g. encapsulated material
    • 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
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/08—Fiber-containing well treatment fluids

Definitions

  • compositions and methods for removing NAFs from a subterranean wellbore relate to compositions and methods for removing NAFs from a subterranean wellbore.
  • 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 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 contacting drinking water.
  • cement sheath achieves hydraulic isolation because of its low permeability.
  • intimate bonding between the cement sheath and both the tubular body and borehole may prevent leaks.
  • the cement sheath may be placed in the annular region between the outside of the tubular body and the subterranean borehole wall by pumping the cement slurry down the interior of the tubular body, which in turn exits the bottom of the tubular body and travels up into the annulus.
  • the cement slurry may also be placed by the "reverse cementing" method, whereby the slurry is pumped directly down into the annular space.
  • the cement slurry is frequently preceded by a spacer fluid or chemical wash to prevent commingling with drilling fluid in the wellbore. These fluids also help clean the tubular-body and formation surfaces, promoting better cement bonding and zonal isolation.
  • the cement slurry may also be followed by a displacement fluid such as water, a brine or drilling fluid.
  • a displacement fluid such as water, a brine or drilling fluid.
  • This fluid may reside inside the tubular body after the cementing process is complete.
  • FIG. 1A-1D Most primary cementing operations employ a two-plug cement placement method (see Figs. 1A-1D).
  • the drillpipe After drilling through an interval to a desired depth, the drillpipe is removed, leaving the borehole 101 filled with drilling fluid 102.
  • a casing string 103 is lowered to the bottom of the borehole, forming an annulus 104 between the casing string and the borehole (Fig. 1 A).
  • the bottom end of the casing string is protected by a guide shoe or float shoe 105. Both shoes are tapered, commonly bullet- nosed devices that guide the casing toward the center of the hole to minimize contact with rough edges or washouts during installation.
  • the guide shoe differs from the float shoe in that the former lacks a check valve.
  • the check valve can prevent reverse flow, or U- tubing, of fluids from the annulus into the casing.
  • Centralizers 106 are placed along casing sections to help prevent the casing from sticking while it is lowered into the well. In addition, centralizers keep the casing in the center of the borehole to help ensure placement of a uniform cement sheath in the annulus between the casing and the borehole wall.
  • the casing interior may fill with drilling fluid 102.
  • the objectives of the primary cementing operation are to remove drilling fluid from the casing interior and borehole, place a cement slurry in the annulus and fill the casing interior with a displacement fluid such as drilling fluid, brine or water.
  • Cement slurries and drilling fluids are often chemically incompatible. Commingling these fluids may result in a thickened or gelled mass at the interface that would be difficult to remove from the wellbore, possibly preventing placement of a uniform cement sheath throughout the annulus. Therefore, a chemical and physical means may be employed to maintain fluid separation. Chemical washes 107 and spacer fluids 108 may be pumped after the drilling fluid and before the cement slurry 109 (Fig. IB). These fluids have the added benefit of cleaning the casing and formation surfaces, which helps achieve good cement bonding. [0009] Wiper plugs are elastomeric devices that provide a physical barrier between fluids pumped inside the casing.
  • a bottom plug 110 separates the cement slurry from the drilling fluid
  • a top plug 111 separates the cement slurry from a displacement fluid 112 (Fig. 1C).
  • the bottom plug has a membrane 113 that ruptures when it lands at the bottom of the casing string, creating a pathway through which the cement slurry may flow into the annulus.
  • the top plug 111 does not have a membrane; therefore, when it lands on top of the bottom plug, hydraulic communication is severed between the casing interior and the annulus (Fig. ID).
  • WOC waiting on cement
  • Another purpose of a bottom plug is to scrape stationary drilling fluid or drilling fluid solids from the casing interior, leaving a clean casing interior surface and pushing the drilling fluid material out of the casing and into the annulus.
  • NAFs may be oil-base muds or water-in-oil emulsions.
  • operators employ water-base spacer fluids or chemical washes comprising surfactants that render the fluids compatible with NAFs.
  • fluids are compatible when no negative rheological effects such as gelation occur upon their commingling. Such effects may hinder proper fluid displacement, leaving gelled fluid in the wellbore and reducing the likelihood of achieving proper zonal isolation.
  • the spacer fluid, chemical wash or both will completely remove the NAF and leave casing and formation surfaces in the annulus water wet. Water-wet surfaces may promote intimate bonding between the cement sheath and casing and formation surfaces.
  • Aqueous fluids including spacer fluids, sacrificial spacer fluids, chemical washes, drilling fluids and cement slurries are provided that are compatible with NAFs and have the ability to remove them from a wellbore during a cementing treatment.
  • a sacrificial spacer fluid is defined as a spacer fluid that is left in the well after a cementing operation. Such a condition may occur when the well operator wishes to remove the NAF from the well and leave a portion of the casing/wellbore annulus uncemented.
  • compositions comprise water, an inorganic cement, one or more surfactants and hydrophobic solids.
  • embodiments relate to methods for cleaning a wellbore in a subterranean well whose surfaces are coated with a non-aqueous fluid (NAF).
  • NAF non-aqueous fluid
  • An aqueous treatment fluid is provided that comprises water, one or more surfactants and hydrophobic solids.
  • the treatment fluid is circulated in the wellbore, then removed from the wellbore.
  • a NAF has been employed as a drilling fluid.
  • embodiments relate to methods for cementing a subterreanean well having a wellbore that has been drilled with a NAF.
  • a casing string is placed inside the wellbore, thereby forming an annulus between an outer surface of the casing string and a wellbore wall.
  • An aqueous treatment fluid is provided that comprises water, one or more surfactants and hydrophobic solids.
  • the treatment fluid is pumped into and through an interior of the casing string, wherein the treatment fluid is not preceded by a bottom plug.
  • the treatment fluid is then removed from the interior of the casing string.
  • a cement slurry is then provided and placed in the annulus between the outer surface of the casing string and the wellbore wall.
  • Figs. 1A-1D depict the sequence of events that take place during a primary cementing operation that employs the two-plug method.
  • Figure 2 shows a diagram illustrating the ability of hydrophobic fibers and surfactants to remove NAFs from casing and formation surfaces in a wellbore.
  • Embodiments relate to compositions and methods for cleaning surfaces coated with a NAF.
  • Such surfaces include a borehole in a subterranean well whose surfaces are coated with a NAF.
  • compositions comprise water, an inorganic cement, one or more surfactants and hydrophobic solids.
  • the water may be fresh water, produced water, connate water, sea water or brines.
  • the inorganic cement may comprise portland cement, calcium aluminate cement, lime/silica blends, fly ash, blast furnace slag, zeolites, cement kiln dust, geopolymers or chemically bonded phosphate ceramics or combinations thereof.
  • the cement slurry may further comprise additives comprising accelerators, retarders, extenders, weighting agents, fluid- loss additives, dispersants, nitrogen, air, gas generating agents, antifoam agents or lost circulation agents or combinations thereof.
  • embodiments relate to methods for cleaning a wellbore in a subterranean well whose surfaces are coated with a NAF.
  • the surfaces in the wellbore include both the casing surfaces and the formation rock surfaces.
  • An aqueous treatment fluid is provided that comprises water, one or more surfactants and hydrophobic solids.
  • the treatment fluid is circulated in the wellbore, then removed from the wellbore.
  • the surfaces may comprise the borehole wall, tubular body surfaces or both.
  • the circulation of the treatment fluid may remove the NAF, filter cake or both from the tubular body and borehole-wall surfaces, and could also leave them water wet.
  • the tubular body may be drill pipe, casing or tubing or combinations thereof.
  • a NAF has been employed as a drilling fluid.
  • embodiments relate to methods for cementing a subterreanean well having a wellbore that has been drilled with a NAF.
  • a casing string is placed inside the wellbore, thereby forming an annulus between an outer surface of the casing string and a wellbore wall.
  • An aqueous treatment fluid is provided that comprises water, one or more surfactants and hydrophobic solids.
  • the treatment fluid is pumped into and through an interior of the casing string, wherein the treatment fluid is not preceded by a bottom plug.
  • the treatment fluid is then removed from the interior of the casing string.
  • a cement slurry is then provided and placed in the annulus between the outer surface of the casing string and the wellbore wall.
  • the aqueous treatment fluid volume may be at least one casing volume. Or, the volume may also be adjusted such that the contact time (i.e., the period of time that a point in the casing or wellbore is exposed to the treatment fluid) is at least 15 minutes.
  • the surfaces may comprise the borehole wall, tubular body surfaces or both.
  • the circulation of the treatment fluid may remove the NAF, filter cake or both from the tubular body and borehole-wall surfaces, and may render leaving them water wet.
  • the tubular body may be drill pipe, casing or tubing or combinations thereof.
  • the cement slurry may comprise portland cement, calcium aluminate cement, lime/silica mixtures, fly ash, blast furnace slag, zeolites, geopolymers or chemically bonded phosphate ceramics or combinations thereof.
  • the cement slurry may further comprise additives comprising accelerators, retarders, extenders, weighting agents, fluid-loss additives, dispersants, nitrogen, air, gas generating agents, antifoam agents or lost circulation agents or combinations thereof.
  • the hydrophobic solids may comprise polyester fibers, polyalkene fibers, acrylic fibers, amide fibers, imide fibers, carbonate fibers, diene fibers, ester fibers, ether fibers, fluorocarbon fibers, olefin fibers, styrene fibers, vinyl acetal fibers, vinyl chloride fibers, vinylidene chloride fibers, vinyl ester fibers, vinyl ether fibers, vinyl ketone fibers, vinylpyridine fibers, vinylpyrrolidone fibers or polyamide fibers or combinations thereof.
  • the polyester fibers may be derived from polylactic acid.
  • the polyester fibers may comprise polyglycolide or polyglycolic acid (PGA), polylactic acid (PLA), polycaprolactone (PCL), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), polyethylene adipate (PEA), polybutylene succinate (PBS), poly(3- hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT) or Polyethylene naphthalate (PEN) or combinations thereof.
  • the polyester fibers may comprise Short Cut PLA Staple, available from Fiber Innovation Technology, Johnson City, Tennessee, USA.
  • the polyamide fibers may comprise NYLON - 6, NYLON - 11, NYLON - 12, NYLON - 6,6, NYLON - 4, 10, NYLON - 5, 10, PA6/66 DuPont ZYTEL [21]), PA6/6T BASF ULTRAMID T [22]), PA6I/6T DuPont SELAR PA [23], PA66/6T DuPont ZYTEL HTN or PA4T DSM Four Tii or combinations thereof.
  • the fibers may have a diameter larger than 1 micron but smaller than 50 microns, or smaller than 40 microns, or smaller than 30 microns. Specifically, the fibers may have a diameter between 1 micron and 50 microns, or 5 microns and 30 microns or 10 microns and 15 microns.
  • the fibers may have a length longer than 1mm but shorter than 30 mm, or 20 mm, or 10 mm. Specifically, the fibers may have a length between 2 mm and 20 mm, or 4 mm and 12 mm or 6 mm and 8 mm.
  • the fibers may be present at a concentration between 0.6 kg/m 3 and 14 kg/m 3 , or 1.2 kg/m 3 and 10 kg/m 3 or 2 kg/m 3 and 8 kg/m 3 .
  • the fibers may be crimped.
  • crimps are defined as undulations, waves or a succession of bends, curls and waves in a fiber strand.
  • the crimps may occur naturally, mechanically or chemically.
  • Crimp has many characteristics, among which are its amplitude, frequency, index and type.
  • crimp is characterized by a change in the directional rotation of a line tangent to the fiber as the point of tangent progresses along the fiber. Two changes in rotation constitute one unit of crimp.
  • Crimp frequency is the number of crimps or waves per unit length of extended or straightened fiber. Another parameter is the crimping ratio, Kl (Eq.
  • Lk is the length of the crimped fiber in the relaxed, released state; and Lv is the length of the same fiber in the stretched state (i.e., the fiber is practically rectilinear without any bends).
  • the fibers may have a crimp frequency between 1/cm and 6/cm, or 1/cm and 5/cm or 1/cm and 4/cm.
  • the Kl value may be between 2 and 15, or between 2 and 10 or between 2 and 6.
  • the surfactants may comprise anionic surfactants, cationic surfactants, nonionic surfactants or zwitterionic surfactants or combinations thereof.
  • the anionic surfactants may comprise sulfates, sulfonates, phosphates or carboxylates or combinations thereof.
  • the anionic surfactants may comprise ammonium lauryl sulfate, sodium lauryl sulfate, sodium laureth sulfate, sodium myreth sulfate, dioctyl sodium sulfosuccinate, perfluorooctane sulfoantes, perfluorobutanesulfonates, alkylbenzene sulfonates, alkyl-aryl ether phosphates, alkyl ether phosphates, alkyl carboxylates, sarcosinates, perfluorononanoates, or perfluorooctanoates or combinations thereof.
  • the cationic surfactants may comprise primary, secondary or tertiary amines, or quaternary ammonium salts or combinations thereof.
  • the nonionic surfactants may comprise long chain alcohols, ethoxylated alcohols, polyoxyethylene glycol alkyl ethers, polyoxypropylene glycol alkyl ethers, glucoside alkyl ethers, polyoxyethylene glycol octylphenol ethers, polyoxyethylene glycol alklyphenol ethers, glycerol alkyl esters, polyoxyethylene glycol sorbitan alkyl esters, sorbitan alkyl esters, cocamide DEA, cocamide MEA, dodecyldimethylamine oxide, block copolymers of polyethylene glycol or polypropylene glycol, or polyethoxylated tallow amine or combinations thereof.
  • the zwitterionic surfactants may comprise sultaines or betaines or combinations thereof.
  • the surfactants may be present at a concentration between about 0.1 vol% and 50 vol%, or between 0.5 vol% and 30 vol%, or between 1 vol% and 10 vol%.
  • the aqueous fluid may comprise a drilling fluid, a spacer fluid, a sacrificial spacer fluid, a chemical wash or a cement slurry or a combination thereof. If the aqueous treatment fluid is a drilling fluid, it may be the drilling fluid that was used to drill the wellbore, or a second drilling fluid with different chemical or physical properties.
  • FIG. 2 One non-limiting example of the method is illustrated in Fig. 2.
  • Casing 101 is present in the wellbore, and a non-aqueous coating 104 is deposited on its surface.
  • a non-aqueous coating 104 also is attached to the formation wall 102.
  • the treatment fluid comprising surfactants and hydrophobic fibers 105 is flowing upward 103 in the annular space. The hydrophobic nature of the fibers and the presence of the surfactants cause the non-aqueous coating to be removed from the casing and formation surfaces as the treatment fluid travels up the annulus.
  • a rotor test was conducted to evaluate the ability of treatment-fluid compositions to remove NAF from casing surfaces.
  • the test equipment was a Chan 35TM rotational rheometer, available from Chandler Engineering, Tulsa, OK, USA.
  • the rheometer was equipped with two cups— one with an 85-mm diameter for tests conducted at 25°C and 55°C, and one with a 50-mm diameter for tests conducted at 85°C.
  • the NAF was an 80/20 oil/water emulsion obtained from a field location.
  • the NAF density was 1420 kg/m 3 (11.8 lbm/gal).
  • the surfactant was EZEFLOTM Surfactant, a blend of ethoxylated alcohols available from Schlumberger, Houston, Texas, USA.
  • the fiber was Short Cut PLA Staple, available from Fiber Innovation Technology, Johnson City, Tennessee, USA.
  • the NAF was sheared at 6000 RPM in a Silverson mixer for 30 minutes. The NAF was then transferred to one of the Chan 35TM rheometer cups. A test rotor was weighted (wo) and then lowered into the NAF to a depth of 50 mm.
  • the rotor was then rotated within the NAF for one minute at 100 RPM and then left to soak in the NAF for 10 minutes. Next, the rotor was removed from the NAF and left to drain for two minutes. The bottom of the rotor was wiped clean and then weighed (wi). The rotor was then remounted on the rheometer and immersed in a cup containing the treatment fluid such that the NAF layer was just covered by the treatment fluid. The rotor was rotated for 10 minutes at 60 RPM. The rotor was then removed from the treatment fluid and left to drain for two minutes. The bottom of the rotor was wiped clean and weighed (wi). The NAF removal efficiency R was then determined by Eq. 2. w —w
  • EXAMPLE 2 [0042] Experiments were performed to evaluate the fiber geometry (i.e., straight or crimped) on cleaning efficiency.
  • the EZEFLOTM surfactant was present at a concentration of 23.8 vol% (1 gal/bbl).
  • the fiber length was 6 mm, and the fiber concentration in the treatment fluid was 3.6 kg/m 3 (1.25 lbm/bbl). The results are presented in Table 2.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structural Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Des fluides contenant des tensioactifs et des particules hydrophobes sont des milieux efficaces d'évacuation de fluides non aqueux (NAF) hors d'un puits de forage souterrain. Les fibres et les tensioactifs sont de préférence ajoutés à un fluide de forage, un fluide tampon, un fluide tampon sacrificiel, un lavage chimique, un laitier de ciment ou des combinaisons de ceux-ci. Les NAF, tels qu'une boue à base d'huile ou une boue d'émulsion eau-dans-huile, sont attirés vers les fibres lorsque le fluide de traitement circule dans le puits de forage.
PCT/US2016/061469 2015-11-17 2016-11-11 Compositions et procédés pour l'entretien de puits souterrains WO2017087263A1 (fr)

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Application Number Priority Date Filing Date Title
US14/943,633 US20160122620A1 (en) 2014-11-05 2015-11-17 Compositions and Methods for Servicing Subterranean Wells
US14/943,633 2015-11-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020264288A1 (fr) * 2019-06-28 2020-12-30 Schlumberger Technology Corporation Compositions de ciment et procédés
US11898415B2 (en) 2018-07-02 2024-02-13 Schlumberger Technology Corporation Cement compositions and methods

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999037884A1 (fr) * 1998-01-21 1999-07-29 Deep South Chemical, Inc. Procede de nettoyage d'un trou de forage avant la cimentation
US6016872A (en) * 1997-03-17 2000-01-25 Forta Corporation Method for removing debris from a well-bore
US20060258545A1 (en) * 2003-03-21 2006-11-16 Jiten Chatterji Well completion spacer fluids containing fibers
US20060254770A1 (en) * 2005-05-10 2006-11-16 Wangqi Hou Method and composition for cleaning a well bore prior to cementing
US20130048285A1 (en) * 2011-08-31 2013-02-28 Stephane Boulard 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
US6016872A (en) * 1997-03-17 2000-01-25 Forta Corporation Method for removing debris from a well-bore
WO1999037884A1 (fr) * 1998-01-21 1999-07-29 Deep South Chemical, Inc. Procede de nettoyage d'un trou de forage avant la cimentation
US20060258545A1 (en) * 2003-03-21 2006-11-16 Jiten Chatterji Well completion spacer fluids containing fibers
US20060254770A1 (en) * 2005-05-10 2006-11-16 Wangqi Hou Method and composition for cleaning a well bore prior to cementing
US20130048285A1 (en) * 2011-08-31 2013-02-28 Stephane Boulard Compositions and Methods for Servicing Subterranean Wells

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11898415B2 (en) 2018-07-02 2024-02-13 Schlumberger Technology Corporation Cement compositions and methods
WO2020264288A1 (fr) * 2019-06-28 2020-12-30 Schlumberger Technology Corporation Compositions de ciment et procédés
US11898088B2 (en) 2019-06-28 2024-02-13 Schlumberger Technology Corporation Cement compositions and methods

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