WO2015069230A1 - Composition fluide pour le nettoyage de puits de forage et de conduite et son procédé d'utilisation - Google Patents

Composition fluide pour le nettoyage de puits de forage et de conduite et son procédé d'utilisation Download PDF

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Publication number
WO2015069230A1
WO2015069230A1 PCT/US2013/068632 US2013068632W WO2015069230A1 WO 2015069230 A1 WO2015069230 A1 WO 2015069230A1 US 2013068632 W US2013068632 W US 2013068632W WO 2015069230 A1 WO2015069230 A1 WO 2015069230A1
Authority
WO
WIPO (PCT)
Prior art keywords
effective amount
composition
wellbore
parts per
per million
Prior art date
Application number
PCT/US2013/068632
Other languages
English (en)
Inventor
Nathan R. HUTCHINGS
Stewart A. SIMPSON
Original Assignee
Bear Creek Services, Llc
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 Bear Creek Services, Llc filed Critical Bear Creek Services, Llc
Priority to PCT/US2013/068632 priority Critical patent/WO2015069230A1/fr
Publication of WO2015069230A1 publication Critical patent/WO2015069230A1/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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
    • 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
    • C09K8/02—Well-drilling compositions
    • C09K8/04—Aqueous well-drilling compositions
    • C09K8/06—Clay-free compositions
    • C09K8/12—Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
    • 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
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/62—Compositions for forming crevices or fractures
    • C09K8/66—Compositions based on water or polar solvents
    • C09K8/68—Compositions based on water or polar solvents containing organic compounds
    • 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
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/84—Compositions based on water or polar solvents
    • C09K8/86—Compositions based on water or polar solvents containing organic compounds
    • C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
    • 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
    • C09K2208/28—Friction or drag reducing additives

Definitions

  • This disclosure relates generally to the field of fluids used in subsurface wellbore, or pipeline cleaning. More specifically, the disclosure relates to the use of amphiphilic blends and friction reducers to enhance removal of sand and cuttings from wellbores, particularly after multi-zone fracturing operations.
  • Wellbores drilled through subsurface formations include vertical and "horizontal" wells, i.e., those that are highly inclined from vertical up to and exceeding 90 degrees from vertical.
  • the objective of drilling such wells is to penetrate a large area of a subsurface formation or formations that exist in layers having approximately the same orientation with respect to vertical, that is, the formations are highly inclined with respect to vertical.
  • Some such formations include naturally or mechanically fractured zones, that is, zones where the formation has enhanced hydraulic permeability and conductivity due to tectonic stresses.
  • Some fractured zones contain hydrocarbons in the form of oil and/or gas.
  • a horizontal wellbore with fractured formation enhances the hydraulic interconnection of a large surface area of the formation to a single conduit, thereby making it economically feasible to produce the hydrocarbons.
  • Hydraulic fracturing may further enable hydraulic connection of the formation located at a substantial lateral distance from the wellbore, thus enhancing the productivity of the wellbore further.
  • Hydraulic fracturing includes pumping a liquid suspension of "proppant", which is a granular material whose grains are suitable to hold open a fracture created by the pressure of pumping the suspension into the formation after the pumping pressure is relieved.
  • Hydraulic fracturing may be performed in some wellbores in a plurality of individual zones isolated by seal elements disposed in the wellbore after the individual zone has been hydraulically fractured. It may be necessary to remove the mechanical obstructions, excess cuttings and other debris from the wellbore in order to gain access to the entire horizontal wellbore for fracturing. It may also be necessary to remove excess fracture proppant, other debris and to remove the seal elements from the wellbore after hydraulic fracturing operations are finished in order to produce hydrocarbons commercially from the wellbore.
  • the removal of debris, seals, and excess proppant from horizontal wellbores is typically facilitated through the use of a coil-tubing rig or work- over rig equipped with a bottom-hole tool assembly designed for milling debris into small particles and/or flushing the obstructions up the wellbore annulus to the surface.
  • fluid system additives can be used to enhance well-bore cleaning operations.
  • friction reducers such as high molecular weight polymers of acrylates, acrylamides, and derivatives thereof can be added to the fluid system to reduce pressure pumping requirements and build viscosity in the fluid.
  • sand and debris removal from horizontal wellbores may be performed with intermittently pumped high viscosity "pills" of gel disposed in a high viscosity, concentrated water solution.
  • the gel is a xanthan, guar, polyacrylamide (or derivative thereof), cellulostic polymer (or derivative thereof), or other polymeric material, which may be the same as used to suspend the proppant in the hydraulic fracturing operation.
  • One aspect is a fluid composition for cleanout of wellbores drilled through subsurface formations that includes an effective amount of an amphiphilic chemical combined with an effective amount of a friction reducer in an aqueous solution of a base liquid. A remainder of the composition includes the base liquid.
  • FIG. 1 is a cross section of a horizontal well after hydraulic fracturing.
  • FIG. 2 shows cleaning out the wellbore of FIG. 1 using a coiled tubing system.
  • FIG. 1 is a cross section of an example wellbore 10 drilled through subsurface formations by a drilling rig 12 or similar device well known in the art disposed at the Earth's surface 11.
  • a drilling rig 12 or similar device well known in the art disposed at the Earth's surface 11.
  • the wellbore 10 may be initially drilled vertically or near vertically, and when approaching a target formation 14, directional drilling equipment (not shown) may be used to change the trajectory of the wellbore at 10A so that it ultimately follows the trajectory at 10B of the target formation 14.
  • the target formation 14 may be hydraulically fractured 20. Portions of the wellbore at 10B may be hydraulically isolated from each other using plugs 30 or similar mechanical seal devices to enable subsequent selective treatment, e.g., hydraulic fracturing of individual portions of the wellbore at 10B. [0014] After each such selective treatment, it may be required to clean out the excess fracturing proppant (e.g., sand) and to remove one or more of the plugs 30. Referring to FIG. 2, one example of such removal and cleaning operation may use a conduit contained on a coiled tubing unit 32 of types well known in the art to insert and withdraw a coiled tubing 32 from the wellbore 10B.
  • fracturing proppant e.g., sand
  • a distal end of the coiled tubing 34 may include an orienting device 36, sensors 38 of various types known in the art, an hydraulic motor 40 such as a positive displacement motor or a turbine motor operated by flow of fluid through the coiled tubing 34 and a bit or mill 42 at the distal end. Additional tools may be included in the bottom-hole assembly to facilitate the clean out including but not limited to agitators, reverse jet annular velocity enhancers, and mechanical tractors.
  • fluid is pumped into the coiled tubing 34 such as by using a fluid pump 44, the motor 40 causes the bit or mill 42 to rotate, and cuttings and excess fracture proppant are lifted to the surface as the fluid exits the bit 42 and flows up an annular space between the coiled tubing 34 and the wall of the wellbore 10B.
  • FIG. 2 is not meant to limit the types of conduit or conveyance apparatus that may be used in cleaning out a wellbore.
  • Other types of conduit may include jointed tubing and drill pipe, and drilling rigs as in FIG. 1 or workover rigs may be used in such cleanout operations with equal effect.
  • the fluid may include an effective amount of an amphiphilic chemical blended with an effective amount of a friction reducer in an aqueous solution.
  • the amphiphilic chemical may be a single compound or a mixture of compounds.
  • Two non-limiting examples of the amphiphilic chemical may include 2-butoxyethanol at a concentration of 2.4 to 24 parts per million in the aqueous solution combined with acetic acid at concentrations of 6 to 24 parts per million in the aqueous solution.
  • Another example of the amphiphilic chemical may be polydimethylsiloxane copolymer at a concentration of about 100 to 300 parts per million in the aqueous solution.
  • a friction reducer may include polyacrylamide, or an AMPS acrylamide polymer at a concentration of 70 to 150 parts per million in the aqueous solution.
  • aqueous solution may be used to mean water or completion brine as the base liquid, or any other base liquid that is essentially non-reactive with the amphphilic chemical and the friction reducer.
  • Effective amount with reference to the amphiphilic chemical and the friction reducer may mean an amount which optimizes the pressure pumping, flow rates, and removal of sand, debris and other particulate contaminants from the wellbore as a result of fluid flow out of the wellbore in the annular space between a conduit and the wall of the wellbore (explained below with reference to FIG. 2).

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Lubricants (AREA)

Abstract

L'invention concerne une composition fluide pour le nettoyage de puits de forage et de systèmes de tuyaux comprenant une quantité efficace d'une substance chimique amphiphile combinée avec une quantité efficace d'un réducteur de frottement dans une solution aqueuse d'un liquide de base. Un reste de la composition comprend le liquide de base. La présente invention concerne généralement le domaine des fluides utilisés dans le nettoyage de puits de forage subsurface, ou de conduites. Plus spécifiquement, l'invention concerne l'utilisation de mélanges amphiphiles et de réducteurs de frottement pour améliorer l'élimination du sable et des déblais de puits de forage, en particulier après des opérations de fracturation multizones.
PCT/US2013/068632 2013-11-06 2013-11-06 Composition fluide pour le nettoyage de puits de forage et de conduite et son procédé d'utilisation WO2015069230A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2013/068632 WO2015069230A1 (fr) 2013-11-06 2013-11-06 Composition fluide pour le nettoyage de puits de forage et de conduite et son procédé d'utilisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2013/068632 WO2015069230A1 (fr) 2013-11-06 2013-11-06 Composition fluide pour le nettoyage de puits de forage et de conduite et son procédé d'utilisation

Publications (1)

Publication Number Publication Date
WO2015069230A1 true WO2015069230A1 (fr) 2015-05-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018038726A1 (fr) * 2016-08-24 2018-03-01 Halliburton Energy Services, Inc. Fluide de nettoyage de tube d'intervention enroulé

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6631764B2 (en) * 2000-02-17 2003-10-14 Schlumberger Technology Corporation Filter cake cleanup and gravel pack methods for oil based or water based drilling fluids
US7781380B2 (en) * 2005-01-24 2010-08-24 Schlumberger Technology Corporation Methods of treating subterranean formations with heteropolysaccharides based fluids
US7897547B1 (en) * 2009-12-21 2011-03-01 Schlumberger Technology Corporation Viscoelastic surfactant rheology modifier
US7950459B2 (en) * 2009-01-15 2011-05-31 Schlumberger Technology Corporation Using a biphasic solution as a recyclable coiled tubing cleanout fluid
US8186438B2 (en) * 2009-07-24 2012-05-29 Schlumberger Technology Corporation Wellbore debris cleanout with coiled tubing using degradable fibers
US20120175108A1 (en) * 2011-01-07 2012-07-12 Weatherford/Lamb, Inc. Test packer and method for use
US20120214714A1 (en) * 2011-02-18 2012-08-23 Snf Holding Company Process for achieving improved friction reduction in hydraulic fracturing and coiled tubing applications in high salinity conditions

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6631764B2 (en) * 2000-02-17 2003-10-14 Schlumberger Technology Corporation Filter cake cleanup and gravel pack methods for oil based or water based drilling fluids
US7781380B2 (en) * 2005-01-24 2010-08-24 Schlumberger Technology Corporation Methods of treating subterranean formations with heteropolysaccharides based fluids
US7950459B2 (en) * 2009-01-15 2011-05-31 Schlumberger Technology Corporation Using a biphasic solution as a recyclable coiled tubing cleanout fluid
US8186438B2 (en) * 2009-07-24 2012-05-29 Schlumberger Technology Corporation Wellbore debris cleanout with coiled tubing using degradable fibers
US7897547B1 (en) * 2009-12-21 2011-03-01 Schlumberger Technology Corporation Viscoelastic surfactant rheology modifier
US20120175108A1 (en) * 2011-01-07 2012-07-12 Weatherford/Lamb, Inc. Test packer and method for use
US20120214714A1 (en) * 2011-02-18 2012-08-23 Snf Holding Company Process for achieving improved friction reduction in hydraulic fracturing and coiled tubing applications in high salinity conditions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018038726A1 (fr) * 2016-08-24 2018-03-01 Halliburton Energy Services, Inc. Fluide de nettoyage de tube d'intervention enroulé
US11060011B2 (en) 2016-08-24 2021-07-13 Halliburton Energy Services, Inc. Coil tubing cleanout fluid

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