WO2008138957A2 - Système de forage d'un trou de forage - Google Patents

Système de forage d'un trou de forage Download PDF

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Publication number
WO2008138957A2
WO2008138957A2 PCT/EP2008/055930 EP2008055930W WO2008138957A2 WO 2008138957 A2 WO2008138957 A2 WO 2008138957A2 EP 2008055930 W EP2008055930 W EP 2008055930W WO 2008138957 A2 WO2008138957 A2 WO 2008138957A2
Authority
WO
WIPO (PCT)
Prior art keywords
casing
oil
drill string
lubricating compound
compound includes
Prior art date
Application number
PCT/EP2008/055930
Other languages
English (en)
Other versions
WO2008138957A3 (fr
Inventor
Bernardus Johannes Henricus Van Den Brekel
Grigoriy Grinberg
Matthew Martin Shade
Mark Michael Shuster
Antonius Leonardus Maria Wubben
Djurre Hans Zijsling
Original Assignee
Shell Internationale Research Maatschappij 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
Application filed by Shell Internationale Research Maatschappij B.V. filed Critical Shell Internationale Research Maatschappij B.V.
Priority to US12/599,818 priority Critical patent/US20110272139A1/en
Priority to CN200880018535A priority patent/CN101680278A/zh
Priority to GB0919530.6A priority patent/GB2461471B/en
Priority to AU2008250002A priority patent/AU2008250002A1/en
Priority to CA002686386A priority patent/CA2686386A1/fr
Priority to BRPI0811595-8A2A priority patent/BRPI0811595A2/pt
Publication of WO2008138957A2 publication Critical patent/WO2008138957A2/fr
Publication of WO2008138957A3 publication Critical patent/WO2008138957A3/fr

Links

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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1007—Wear protectors; Centralising devices, e.g. stabilisers for the internal surface of a pipe, e.g. wear bushings for underwater well-heads
    • 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
    • C09K8/08—Clay-free compositions containing natural organic compounds, e.g. polysaccharides, or derivatives thereof
    • 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
    • C09K8/02—Well-drilling compositions
    • C09K8/04—Aqueous well-drilling compositions
    • C09K8/14—Clay-containing compositions
    • C09K8/18—Clay-containing compositions characterised by the organic compounds
    • C09K8/20—Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives
    • 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
    • C09K8/14—Clay-containing compositions
    • C09K8/18—Clay-containing compositions characterised by the organic compounds
    • C09K8/22—Synthetic organic compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1085—Wear protectors; Blast joints; Hard facing
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/085—Phosphorus oxides, acids or salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/2805—Esters used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/40—Fatty vegetable or animal oils
    • C10M2207/401—Fatty vegetable or animal oils used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
    • C10M2219/024—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of esters, e.g. fats
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure

Definitions

  • the present invention relates to a system for drilling a borehole into an earth formation, comprising a casing arranged in the borehole, and a drill string extending through the interior of the casing to a lower end portion of the borehole, the casing having an inner surface susceptible of wear due to contact with an outer surface of the drill string during drilling of the borehole with the drill string.
  • the drill string is rotated from surface by a rotary table at the drilling rig to deepen the wellbore, whereby the rotating drill string normally is in frictional contact with the inner surface of the casing and the wellbore wall.
  • the accumulated friction force between drill string and casing/wellbore wall increases with increasing depth, tortuosity and inclination of the borehole, thus leading to increased torque at the rotary table.
  • the frictional contact between the drill string and the casing potentially leads to wear of both the drill string and the casing.
  • casing are installed at selected depth intervals of the wellbore, whereby generally the fracture pressure and the pore pressure of the surrounding formation are the determining factors for the length of each such depth interval.
  • each casing is lowered through a previously installed casing and extends from surface to near the lower end of the newly drilled depth interval.
  • subsequent casings necessarily are of stepwise decreasing diameter.
  • the resulting nested casing arrangement implies that each casing normally is in frictional contact with the rotating drill string only for the duration of drilling the next depth interval. Therefore, for such applications, casing wear is normally not a significant problem.
  • EP-1044316-B1 discloses a wellbore system whereby subsequent casings do not extend to surface. Instead, each new wellbore interval is provided with a casing that extends from the lower end of the previous casing to near the newly drilled wellbore interval. Furthermore, each casing is radially expanded in the wellbore after having been lowered to the desired depth so that the wellbore can be drilled at a substantially uniform diameter along the length thereof . It is a problem of the known wellbore system that each casing is exposed to wear due to frictional contact with the rotating drill string, for prolonged periods of time. The present invention therefore sets out to provide an improved system for drilling a wellbore, which overcomes the problems of the prior art.
  • a system for drilling a borehole into an earth formation comprising a casing arranged in the borehole, a drill string extending through the interior of the casing to a lower end portion of the borehole, and a body of drilling fluid extending into the casing, the casing having an inner surface susceptible of wear due to frictional contact with an outer surface of the drill string during drilling of the borehole with the drill string, wherein the system further comprises means for reducing wear of said inner surface of the casing, said means including at least one of a hardened layer at the inner surface of the casing, a friction-reducing layer at the outer surface of the drill string, and a lubricating compound contained in the body of drilling fluid.
  • each said means are effective to protect the inner surface of the casing against wear, whereby the hardened inner layer of the casing protects the casing against the abrasive action of small particles contained in the drilling fluid, and the friction-reducing layer of the drill string and the lubricating compound in the drilling fluid protect the casing against high friction forces from direct contact with the drill string.
  • the system comprises each of the three wear reducing means, i.e. a hardened layer at the inner surface of the casing, a friction-reducing layer at the outer surface of the drill string, and a lubricating compound contained in the body of drilling fluid.
  • the hardened layer at the inner surface of the casing has a first hardness and the outer surface of the drill string has a second hardness, and wherein said first hardness is larger than said second hardness.
  • the ratio of the first hardness to the second hardness is between 1 and 5.
  • the first hardness has a value of between 150 Hv and 600 Hv.
  • the friction-reducing layer of the drill string comprises poly-tetra-fluor-ethene (PTFE).
  • PTFE poly-tetra-fluor-ethene
  • the friction-reducing layer can be provided in the form of a coating applied to the outer surface of the drill string.
  • the lubricating compound includes between 64.25-90.89 wt% base oil, such as a natural triglyceride oil, fish oil, animal oil, vegetable triglyceride oil, sunflower seed oil, soybean oil, rapeseed oil canola oil, palm nut oil, palm oil, olive oil, rapeseed oil, canola oil, linseed oil, ground nut oil, soybean oil, cottonseed oil, sunflower seed oil, pumpkin seed oil, coconut oil, corn oil, castor oil, walnut oil, natural or synthetic oil, or an ester.
  • base oil such as a natural triglyceride oil, fish oil, animal oil, vegetable triglyceride oil, sunflower seed oil, soybean oil, rapeseed oil canola oil, palm nut oil, palm oil, olive oil, rapeseed oil, canola oil, linseed oil, ground nut oil, soybean oil, cottonseed oil, sunflower seed oil, pumpkin seed oil, coconut oil, corn oil, castor oil, walnut
  • the lubricating compound includes between 0.02-0.05 wt% metal deactivator, for example Triazol or benzotriazol derivatives, such as tolytriazol.
  • metal deactivator for example Triazol or benzotriazol derivatives, such as tolytriazol.
  • the lubricating compound includes between 0.5-3.0 wt% antioxidant, for example aromatic amine antioxidant and/or hindered phenolic antioxidants antioxidants, such as for example, 2,6-bis (tert butyl-4- methylphenol, BHT) .
  • antioxidant for example aromatic amine antioxidant and/or hindered phenolic antioxidants antioxidants, such as for example, 2,6-bis (tert butyl-4- methylphenol, BHT) .
  • Example commercially available products are: Octylated, Butylated Diphenylamine Antioxidant from Ciba-Geigy Corp (lrganox L 57); 2,6-bis (1, I-dimethylethyl) -4-methyl-Phenol, from PMC, Inc (BHT); and Benzenepropanoic acid, 3,5-bis ( 1, 1-demethylethyl ) -4- hydroxy-, thiodi-2, 1-ethanediyl ester, from Ciba-Geigy Corp (lrganox 1035) .
  • the lubricating compound preferably includes between 4-12 wt% sulfurized natural oils like sulfurized vegetable or animal fatty oils, with natural oils sulfur content 9%-21%, such as for example 13.5%-17.5%.
  • Example commercially available products are: Sulfurized vegetable oils from Rhein Chemie Corporation (Additin RC-2515); and Sulfurized Lard Oil from Ferro Corporation (HSL) .
  • the lubricating compound can include between 4-
  • phosphate ester such as phosphoric acid esters with ethoxylated fatty ester (C]_2 ⁇ C 15) alcohols, preferably mixture of phosphoric acid ester with ethoxylated lauryl alcohol and phosphoric acid ester with ethoxylated tridecyl alcohol.
  • Example commercially available products are: Phosphoric acid ester with ethoxylated lauryl alcohol and phosphoric acid ester with ethoxylated tridecyl alcohol from Houghton International (Houghton 5653) .
  • the lubricating compound can include between 0.4- 1.5 wt% phosphoric acid, for example phosphoric acid esters with ethoxylated fatty ester (C]_2 ⁇ C 15) alcohols, preferably mixture of phosphoric acid ester with ethoxylated lauryl alcohol and phosphoric acid ester with ethoxylated tridecyl alcohol.
  • phosphoric acid esters with ethoxylated fatty ester (C]_2 ⁇ C 15) alcohols preferably mixture of phosphoric acid ester with ethoxylated lauryl alcohol and phosphoric acid ester with ethoxylated tridecyl alcohol.
  • Example commercially available products are: Phosphoric acid ester with ethoxylated lauryl alcohol and phosphoric acid ester with ethoxylated tridecyl alcohol from Houghton International (Houghton 5653) .
  • the lubricating compound suitably includes between 0.08-1.5 wt% viscosity modifier, such as polyacrylates, polymethacrylates, modifier inylpyrrolidone/methacrylate- copolymers, polyvinylpyrrolidones, polybutanes, olefin- copolymers, styrene/-acrylate-copolymers, polyethers, such as for example, styrene or butadiene-styrene polymer.
  • An example commercially available product is Styrene Hydrocarbon Polymer from Lubrizol Corporation (Lubrizol® 7440S) .
  • the lubricating compound suitably includes between 0.1-0.5 wt% pour-point depressant, for example polymethacrylates, alkylated naphthalene depressant derivatives, such as alkyl ester copolymers.
  • pour-point depressant for example polymethacrylates, alkylated naphthalene depressant derivatives, such as alkyl ester copolymers.
  • alkyl ester copolymers such as Lubrizol 6662.
  • the lubricating compound suitably includes between 0.01-0.2 wt% defoamer, such as silicon based antifoam agent.
  • defoamer such as silicon based antifoam agent.
  • An example commercially available product is
  • the lubricating compound can include between 0-5 wt% carboxylic acid soaps, for example alkali, alkanolamine, alkyl amine or alkoxylated acid soaps amine salts of mono-or dibasic fatty acids, or mixture thereof.
  • carboxylic acid soaps for example alkali, alkanolamine, alkyl amine or alkoxylated acid soaps amine salts of mono-or dibasic fatty acids, or mixture thereof.
  • An example commercially available product is Soap formed in situ as a product of reaction between Tall Oil Fatty Acids (Sylvatal ® D3OLR from Arizona Chemical Co.) and triethanol amine (TEA 99 from Huntsman Corporation).
  • a number of drilling fluids were tested to determine the effect of various lubricating compounds on drill string wear, casing wear, and friction coefficient between drill string and casing.
  • the tested drilling fluids were: fluid 1: water based drilling fluid containing 3 wt% bentonite; fluid 2: water based drilling fluid containing 3 wt% barite; fluid 3: water based drilling fluid containing 3 wt%
  • the tested drill string coatings were: coating 1: Victrex coat manufactured by Victrex Peek Coating (Houston TX, USA) ; coating 2: Ruby Red manufactured by Kersten Kunststoffofcoating (Netherlands); coating 3: MC coat manufactured by Metal Coating Corp. (Coating (Houston TX, USA); coating 4: Ceram coat manufactured by Freecom INC.
  • Coating Houston TX, USA
  • coating 5 Green coat manufactured by Endura Coating (Warren MI, USA)
  • coating 6 H329 coat manufactured by Hitemco Southwest (Coating (Houston TX, USA)
  • coating 7 T15 coat manufactured by Hitemco Southwest (Coating (Houston TX, USA)
  • coating 8 T90 green manufactured by Hitemco Southwest (Coating (Houston TX, USA) .
  • the drill string was made of VM 50 steel, and the casing was made of VM 50 steel.
  • the drilling fluid was water based and included Bentonite and barite as friction reducing compounds .
  • Fig. 1 schematically shows a wellbore drilled with an embodiment of the drilling system of the invention
  • Fig. 2 schematically shows the wellbore of Fig. 1 during continued drilling of the wellbore
  • FIG. 3 schematically shows the wellbore of Figs. 1 and 2 after drilling is completed.
  • a wellbore 1 formed into an earth formation 2 during drilling thereof using a drill string 4 provided with a drill bit 5.
  • the drill string 4 extends from a drilling rig 6 at the earth surface 8 to the bottom 10 of the wellbore 1, and is provided with a flow passage (not shown) for pumping drilling fluid from the drilling rig 6 via the flow passage to the drill bit 5, and from there into the wellbore 1.
  • An upper portion 12 of the wellbore 1 is provided with a first steel casing 14 having a lower end part 15 of increased diameter to receive a second casing (referred to hereinafter) therein.
  • the first casing 14 is radially expandable and has a hardened inner surface 16, with hardness larger than the hardness of the outer surface of the drill string 4.
  • the drill string 4 is provided with an outer layer in the form of a poly-tetra-fluor-ethene (PTFE) coating 18.
  • PTFE poly-tetra-fluor-ethene
  • the PTFE coating 18 comprises Ruby Red Teflon marketed as Teflon® PFA Coating by Kersten Kunststoffofcoating (Netherlands).
  • Fig. 2 is shown the wellbore 1 after drilling of a further section thereof, whereby a second steel casing 20 is arranged below the first casing 14 in the wellbore 1.
  • the second casing 20 extends a short distance into the lower end part 15 of the first casing 14 to provide a sealed connection between the two casings 14, 20.
  • the second casing 20 is radially expandable and has a hardened inner surface 22, with hardness larger than the hardness of the outer surface of the drill string 4.
  • the second casing 20 has a lower end part 24 of increased diameter to receive a third casing (referred to hereinafter) therein .
  • a third casing referred to hereinafter
  • a third casing 28 is arranged below the second casing 20 in the wellbore 1.
  • the third casing 28 extends a short distance into the lower end part 24 of the second casing 20 to provide a sealed connection between the two casings 20, 28.
  • the third casing 28 is radially expandable and has a hardened inner surface 30, with hardness larger than the hardness of the outer surface of the drill string 4.
  • the drill string is rotated by a rotary table (not shown) at the drilling rig 6 to drill an upper portion of the wellbore 1, whereafter the drill string is retrieved and the first casing 14 is installed in the upper wellbore portion.
  • the wellbore is drilled deeper whereby the drill string 4 passes through the first casing 14, and into the new wellbore portion being drilled.
  • a drilling fluid is simultaneously pumped through the flow passage of the drill string 4 into the lower portion of the wellbore 1.
  • the drilling fluid returns to surface through the annular space 32 formed between the wellbore wall and the casing 14 on one hand, and the drill string 4 on the other hand.
  • the drilling fluid is provided with a lubricating compound in the form of vegetable oil to reduce frictional forces between the rotating drill string 4, and the casing 14 and wellbore wall.
  • the drill string 4 is retrieved to surface and the second casing 20 is installed in the newly drilled wellbore portion.
  • the second casing 20 extends a short distance into the lower end part 15 of - li ⁇
  • a further wellbore portion is drilled whereby the drill string 4 passes through the first casing 14, the second casing 20, and into the further wellbore portion being drilled.
  • Drilling fluid is simultaneously circulated downwardly through the drill string 4, and upwardly through the annular space 32 between the drill string 4 on one hand, and the wellbore wall and the casings 14, 20 on the other hand.
  • the drilling fluid is provided with said vegetable oil to reduce frictional forces between the rotating drill string 4, and the casings 14, 20 and wellbore wall.
  • the drill string 4 is retrieved to surface and the third casing 28 is installed below the second casing 20 in the wellbore 1.
  • the third casing 28 extends a short distance into the lower end part 24 of the second casing 20 to provide a sealed connection between the two casings 20, 28.
  • a drill string can be used that is transformed into a casing after a selected wellbore portion has been drilled.
  • Such method is generally referred to as "casing drilling” or “liner drilling”.
  • the drill string can be formed as an expandable tubular element that is radially expanded in the newly drilled wellbore portion to form a casing therein.
  • the method of the invention is of particular interest for these "casing drilling” or “liner drilling” applications since the drill string (which is to be transformed into casing) has no radial upsets like in a conventional drill string, which otherwise can be designed to minimise friction between the drill string and the borehole wall/casing, and wear of the casing. Furthermore, it is envisaged that friction reduction between drill string and borehole wall/casing is particularly important for "casing drilling” or “liner drilling” applications because it helps to reduce the rotational torque increase due to the relatively large diameter of the rotating "casing” or “ liner” relative to the borehole diameter.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Earth Drilling (AREA)

Abstract

La présente invention concerne un système de forage d'un trou de forage dans une formation géologique, comportant un tubage installé dans le trou de forage, un train de tiges s'étendant à travers l'intérieur du tubage jusqu'à une partie d'extrémité inférieure du trou de forage, e tun corps de fluide de forage s'étendant dans le tubage, le tubage présentant une surface interne susceptible d'usure due au contact de frottement avec une surface externe du train de tiges de forage lors du forage du trou de forage avec le train de tiges de forage. Le système comporte également un moyen permettant la réduction d'usure de ladite surface interne du tubage, ledit moyen comprenant au moins une couche durcie à la surface interne du tubage, une couche de réduction de frottement à la surface externe du train de tiges de forage, et un composé lubrifiant contenu dans le corps du fluide de forage.
PCT/EP2008/055930 2007-05-15 2008-05-15 Système de forage d'un trou de forage WO2008138957A2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US12/599,818 US20110272139A1 (en) 2007-05-15 2008-05-15 System for drilling a wellbore
CN200880018535A CN101680278A (zh) 2007-05-15 2008-05-15 用于钻探井孔的***
GB0919530.6A GB2461471B (en) 2007-05-15 2008-05-15 System for drilling a wellbore
AU2008250002A AU2008250002A1 (en) 2007-05-15 2008-05-15 System for drilling a wellbore
CA002686386A CA2686386A1 (fr) 2007-05-15 2008-05-15 Systeme de forage d'un trou de forage
BRPI0811595-8A2A BRPI0811595A2 (pt) 2007-05-15 2008-05-15 Sistema para perfurar um furo de poço em uma formação terrestre.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07108250.7 2007-05-15
EP07108250 2007-05-15

Publications (2)

Publication Number Publication Date
WO2008138957A2 true WO2008138957A2 (fr) 2008-11-20
WO2008138957A3 WO2008138957A3 (fr) 2009-01-15

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PCT/EP2008/055930 WO2008138957A2 (fr) 2007-05-15 2008-05-15 Système de forage d'un trou de forage

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WO2012116036A2 (fr) 2011-02-22 2012-08-30 Exxonmobil Research And Engineering Company Dispositifs de production de puits de pétrole et de gaz cheminés et revêtus
WO2012122337A2 (fr) 2011-03-08 2012-09-13 Exxonmobil Research And Engineering Company Revêtements à coefficient de frottement très faible pour trains de tiges de forage
WO2012134953A1 (fr) * 2011-03-30 2012-10-04 Coil Chem, L.L.C Fluide de complétion avec réduction du frottement
WO2012135306A2 (fr) 2011-03-30 2012-10-04 Exxonmobil Research And Engineering Company Dispositifs revêtus de production de puits de pétrole et de gaz
US8286715B2 (en) 2008-08-20 2012-10-16 Exxonmobil Research And Engineering Company Coated sleeved oil and gas well production devices
WO2013082134A1 (fr) * 2011-11-28 2013-06-06 Schlumberger Canada Limited Équipement pétrolier à coefficient de frottement réduit
EP3055484A4 (fr) * 2013-11-21 2017-06-07 Halliburton Energy Services, Inc. Réduction de frottement et d'usure de tubulaires de fond de trou en utilisant du graphène

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CN105694827A (zh) * 2016-03-14 2016-06-22 中国石油集团渤海钻探工程有限公司 一种适用于有机盐钻井液的润滑剂及其制备方法
US10502010B2 (en) 2017-03-13 2019-12-10 Wen J Whan Vacuum assisted aerated drilling
CN108659927A (zh) * 2018-05-08 2018-10-16 成都创巨油气工程技术有限公司 一种油气田金属管柱施工用环保型润滑液
US20240093623A1 (en) * 2021-06-16 2024-03-21 Radjet Services Us, Inc. Method and system for reducing friction in radial drilling and jet drilling operations

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8286715B2 (en) 2008-08-20 2012-10-16 Exxonmobil Research And Engineering Company Coated sleeved oil and gas well production devices
CN102311722A (zh) * 2010-06-29 2012-01-11 哈尔滨杰力沃石油科技有限公司 石油钻井液用脂肪酸润滑剂
WO2012116036A2 (fr) 2011-02-22 2012-08-30 Exxonmobil Research And Engineering Company Dispositifs de production de puits de pétrole et de gaz cheminés et revêtus
WO2012122337A2 (fr) 2011-03-08 2012-09-13 Exxonmobil Research And Engineering Company Revêtements à coefficient de frottement très faible pour trains de tiges de forage
WO2012134953A1 (fr) * 2011-03-30 2012-10-04 Coil Chem, L.L.C Fluide de complétion avec réduction du frottement
WO2012135306A2 (fr) 2011-03-30 2012-10-04 Exxonmobil Research And Engineering Company Dispositifs revêtus de production de puits de pétrole et de gaz
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WO2013082134A1 (fr) * 2011-11-28 2013-06-06 Schlumberger Canada Limited Équipement pétrolier à coefficient de frottement réduit
EP3055484A4 (fr) * 2013-11-21 2017-06-07 Halliburton Energy Services, Inc. Réduction de frottement et d'usure de tubulaires de fond de trou en utilisant du graphène

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GB0919530D0 (en) 2009-12-23
GB2461471A (en) 2010-01-06
US20110272139A1 (en) 2011-11-10
AU2008250002A1 (en) 2008-11-20
BRPI0811595A2 (pt) 2014-12-16
WO2008138957A3 (fr) 2009-01-15
CN101680278A (zh) 2010-03-24
CA2686386A1 (fr) 2008-11-20

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