WO2014126481A2 - Bande de stabilisation et de résistance à l'usure pour raccords de tige et d'outil d'équipement de forage rotatif - Google Patents

Bande de stabilisation et de résistance à l'usure pour raccords de tige et d'outil d'équipement de forage rotatif Download PDF

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Publication number
WO2014126481A2
WO2014126481A2 PCT/NZ2014/000014 NZ2014000014W WO2014126481A2 WO 2014126481 A2 WO2014126481 A2 WO 2014126481A2 NZ 2014000014 W NZ2014000014 W NZ 2014000014W WO 2014126481 A2 WO2014126481 A2 WO 2014126481A2
Authority
WO
WIPO (PCT)
Prior art keywords
stabiliser
wear resisting
resisting band
base material
mould
Prior art date
Application number
PCT/NZ2014/000014
Other languages
English (en)
Other versions
WO2014126481A3 (fr
Inventor
Geoffrey Neil Murray
Gregory Douglas TROWBRIDGE
Steven Jeoffrey HOLLAND
Original Assignee
Geoffrey Neil Murray
Trowbridge Gregory Douglas
Holland Steven Jeoffrey
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 Geoffrey Neil Murray, Trowbridge Gregory Douglas, Holland Steven Jeoffrey filed Critical Geoffrey Neil Murray
Publication of WO2014126481A2 publication Critical patent/WO2014126481A2/fr
Publication of WO2014126481A3 publication Critical patent/WO2014126481A3/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
    • E21B17/1042—Elastomer protector or centering means
    • 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
    • E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
    • 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

Definitions

  • the present invention relates to a drilling and completion stabilisation and wear banding system for stabilising drilling and completion tubulars and equipment in a well bore for oil, gas, geothermal and other types of wells. More particularly, the present invention relates to a drilling and completion tubular stabilisation and wear banding system for reducing casing or tool joint wear or annular drilling and cementing fluid friction pressure.
  • problems When drilling a well bore for oil, gas, geothermal or similar, there may be numerous problems.
  • the types of problem encountered depend largely on the well geometry and the type of drilling fluid used. Examples of problems that may be encountered include, but are not limited to: high torque, high drag, casing wear, drill pipe body and drill pipe tool joint wear and heat checking, vibration, rotational stick-slip related high strain rate deformation and excessive annular drilling fluid friction pressure.
  • Non-rotating type drill pipe protectors are also used and are effective at reducing torque plus casing and drill pipe wear however they all impair hydraulic performance and tend to increase axial drag.
  • a process known as hardbanding can also be used to combat tool joint wear while reducing casing wear.
  • hardbanding involves continuously depositing a metal alloy around the circumference of a tool.
  • metal alloy helps to overcome the disadvantages of using a softer material such as rubber, this application process generates significant heating of the tool joint area which can damage the internal plastic coating of the drill pipe or adversely affect its mechanical properties.
  • a common component in the material used for hardbanding is tungsten carbide.
  • the use of tungsten carbide in hardbanding generally increases casing wear.
  • Another product that can be used is Enhanced Performance Drill Pipe. This has an external appearance somewhat like a metal Archimedes screw pump mounted on drill pipe. Although this product has generally better all-round performance, and particularly in regard to improving hydraulic performance, it is extremely expensive and is therefore not commonly used.
  • the invention may broadly be said to consist in a stabiliser or wear resisting band for drilling or casing drilling or running casing tubulars, comprising a cylindrical body formed in-situ by moulding around a pipe or tool joint, the body of the tool formed from a base material that can be one of an elastomer, semi-crystalline or amorphous polymer, a thermoset material, or a cross-linked material.
  • the selected base material may be any one of Nitrile Rubber, Silicon Rubber, Polyurethane, Polyethylene including high and ultra-high Molecular Weight Polyethylenes, Polyamides (Nylon) or a PEEK type material.
  • specialty fibres or powders are mixed with the base material before the in-situ forming.
  • the specialist fibres or powders are any one of Kevlar, glass or carbon fibre.
  • the specialist fibres or powders are nano-diamond and/or tourmaline and/or molybdenum disulfide.
  • the base material contains additives of the type that aid with the dissipation of static electricity.
  • the base material is coloured by the addition of a coloured dye.
  • the stabiliser or wear resisting band has an outside diameter greater than the outside diameter of the connections between items in the string.
  • the stabiliser or wear resisting band is a stabiliser with a plurality of standoff ribs arranged around and extending radially outwards from the cylindrical body.
  • the ribs are aligned lengthways.
  • the stand-off ribs taper down to merge with the diameter of the cylindrical body at each end.
  • the ribs are spiralled around the body.
  • the stabiliser or wear resisting band is a wear resisting band with a plurality of stand-off ribs arranged around and extending radially outwards from the cylindrical body.
  • the ribs run circumferentially around the outside of the wear resisting band.
  • the ribs are located so as to improve the strength of a weld line on the stabiliser.
  • the stabiliser or wear resisting band has visual wear indicators.
  • the invention may broadly be said to consist in a method of forming a stabiliser or wear resisting band comprising the steps of:
  • the method comprises the additional initial step of ensuring that the mould is adequately vented before heating the mould and delivering the moulding base material.
  • the method comprises the additional step during delivery of the moulding base material of applying a vacuum to a vent or vents in the mould to aid the flow and placement of the stabiliser material.
  • the method comprises the additional initial step of choosing the base material from any one of Nitrile Rubber, Silicon Rubber, Polyurethane, Polyethylene including high and ultra-high Molecular Weight Polyethylenes, Polyamides (Nylon) or a PEEK type material.
  • the method comprises the additional initial step of mixing specialist fibres chosen from any one of Kevlar, glass or carbon fibre with the base material before the in-situ forming.
  • the method comprises the additional initial step of mixing specialist powders chosen from nano-diamond and/or molybdenum disulfide with the base material before the in-situ forming.
  • the method comprises the additional initial step of adding additives of the type that aid with the dissipation of static electricity to the base material.
  • the method comprises the additional initial step of adding coloured dye to the base material.
  • the temperature of the mould and the base material is chosen such that the integrity of the internal plastic coating of the tubular is not affected.
  • the mould is chosen to have an internal profile such that the formed stabiliser or wear resisting band will have a plurality of stand-off ribs arranged around and extending radially outwards from the body of the stabiliser or wear resisting band.
  • the mould is chosen to have an internal profile such that the ribs are aligned lengthways.
  • the mould is chosen to have an internal profile such that the ribs taper down to merge with the body of stabiliser or wear resisting band at each end.
  • the mould is chosen to have an internal profile such that the ribs are spiralled around the body.
  • the mould is chosen to have an internal profile such that the ribs run circumferentially around the outside of the wear resisting band.
  • the mould is chosen to have an internal profile such that the ribs are located so as to improve the strength of a weld line on the stabiliser.
  • the mould is chosen to have an internal profile and is positioned such that the weld line is opposite the injection point.
  • the invention may broadly be said to consist in a method of repairing or restoring a stabiliser or wear resisting band comprising the steps of:
  • the method comprises the additional initial step of ensuring that the mould is adequately vented before heating the mould and delivering the moulding base material.
  • the method comprises the additional step during delivery of the moulding base material of applying a vacuum to a vent or vents in the mould to aid the flow and placement of the stabiliser material.
  • the method comprises the additional initial step of choosing the base material from any one of Nitrile Rubber, Silicon Rubber, Polyurethane, Polyethylene including high and ultra-high Molecular Weight Po!yethylenes, Polyamides (Nylon) or a PEEK type material.
  • the method comprises the additional initial step of mixing specialist fibres chosen from any one of Kevlar, glass or carbon fibre with the base material before the in-situ forming.
  • the method comprises the additional initial step of mixing specialist powders chosen from nano-diamond and/or tourmaline and/or molybdenum disulfide with the base material before the in-situ forming.
  • the method comprises the additional initial step of adding additives of the type that aid with the dissipation of static electricity to the base material.
  • the method comprises the additional initial step of adding coloured dye to the base material.
  • the temperature of the mould and the base material is chosen such that the integrity of the internal plastic coating of the tubular is not affected.
  • the invention may broadly be said to consist in a method of forming a number of stabilisers or wear resisting bands on a drill pipe tool joint(s), drill pipe(s), or casing(s) to alter the first natural frequency, comprising the steps of: choosing the desired number of points of support;
  • moulding base material to the mould or moulds via a screw and/or ram arrangement, and a heated barrel or barrels, and/or an insulated line or lines.
  • the stabilisers or wear resisting bands are positioned at irregular intervals.
  • Figure 1 shows a side elevation of the stabiliser of the present invention, attached to a drill well tubular
  • Figure 2 shows an end cross-sectional view of the stabiliser and tubular of figure 1 ;
  • Figure 3 shows a perspective view of the stabiliser of the present invention;
  • Figure 4a shows a side elevation of a drill pipe tool joint with a first embodiment of wear band moulded in position on the tool joint
  • Figure 4b shows a side elevation of a drill pipe tool joint with a second embodiment of wear band moulded in position on the tool joint
  • Figure 5 shows an exploded perspective view of the wear band of figure 4 and a split mould for moulding the wear band onto the tool joint, the two halves of the split mould clamping together around the tool joint in use.
  • the present invention uses specifically formulated engineering polymers as an alternative to hardbanding using metal alloys. These polymers generally exhibit lower wear rates while also significantly reducing friction, torque and drag. The use of engineering polymers also significantly reduces the potential for casing wear.
  • the engineering polymers are applied to the pipes and tubulars using an in-situ application process. This process generates significantly less heat than hardbanding, and therefore damage to the drill pipe's internal plastic lining is minimised or totally eliminated. Moulding a wear band in-situ around a tubular or tool joint replaces the need to apply a welded metal hardband.
  • the present invention has two preferred embodiments: a stabiliser, primarily for use on drilling tubulars, and a wear band, primarily for use at or close to tool joints for drill pipe, heavy weight drill pipe, drill collars and associated drilling tools.
  • a stabiliser primarily for use on drilling tubulars
  • a wear band primarily for use at or close to tool joints for drill pipe, heavy weight drill pipe, drill collars and associated drilling tools.
  • the present invention is applicable to both new and used tubulars.
  • the stabiliser and wear band are described below.
  • the stabiliser 1 has a generally cylindrical body, with a plurality of stand-off ribs or lubrication channels 3 arranged around the periphery and extending radially from the cylindrical body.
  • the ribs are aligned to run lengthways along the body.
  • the ribs 3 are slightly spiralled around the body as best shown in figure
  • the standoff ribs taper down to merge with the diameter of the cylindrical body at each end.
  • the stabiliser 1 shown in figures 1 and 2 is moulded in-situ around a drilling tubular
  • the stabiliser 1 is moulded onto a pre-prepared surface at any selected position along the length of the tubular 2.
  • the tubular may be a casing material rather than drill pipe.
  • the standoff blades are spiralled around the cylindrical body of the stabiliser 1.
  • a different pitch or tightness of the spiral may be more suitable for different applications. For example, if a particular application or drilling situation requires a particular annular drilling velocity, (e.g. to enable some degree of pumping at typical drilling rotational speeds), then a stabiliser having suitably pitched blades can be created.
  • the number of stabilisers installed per joint of pipe may also be altered to achieve the desired number of points of support wherein the more closely the pipe is supported, the higher will be the first natural frequency. Additionally, the stabilisers may be positioned at irregular spacings in order to halt the development of a various harmonics that may otherwise propagate in the drill string. Wear band
  • wear band 7 Two embodiments of drill pipe wear band are shown in figures 4a, 4b, and 5.
  • the wear band is generally referred to as wear band 7 (7a in figure 4a, and 7b in figure 4b).
  • Wear band 7 is preferably moulded in-situ around a tubular tool joint 6 on a drill pipe 5.
  • the position at which the wear band 7 is to be moulded is prepared and machined to an appropriate uniform dimension below the tool joint surface and is of an appropriate uniform width.
  • the wear band may be in situ moulded directly onto the upset portion of the drill pipe as shown in figure 6.
  • the wear band can have a uniform outer circumferential surface, as shown in figure 4a, or it can be profiled, as shown in the embodiment of figure 4b.
  • the outer surface has two stand-off ribs 9 arranged around and extending radially outwards from the cylindrical body. These ribs run circumferentially around the outside of the body, substantially perpendicular to the axis of the body, and the drill pipe when installed on the drill pipe.
  • the mould is profiled to create the ribs 9, and this profiling assists with directing the fibre reinforced melt flow in order to improve the strength of the weld line opposite the injection point.
  • the stabilisers and wear bands will preferably be capable of being safely and efficiently installed on the drill site using self-contained equipment. This process is described below.
  • the outside diameter of the standoff blades and tool joint protection wear bands is preferably formed so that their outside diameters are larger than the outside diameter of the connections between tubulars in the string, in order to provide positive stand-off and to enable washing over with wash-pipe should the tubular unintentionally be cemented in the wellbore.
  • the outside diameter will preferably be greater than the connection diameter in order to provide adequate standoff for cementing purposes.
  • the stabilisers and wear bands are formed in-situ by moulding around the pipe or tool joint using an in-situ mould 8.
  • the mould is preferably of a low-pressure split type which clamps tightly to the drill pipe tool joint, drill pipe or casing.
  • the moulds are split into two halves (8a and 8b) to enable installation around the pipe or tool joint.
  • the moulds are heated to ensure that the moulded stabiliser material will flow properly and without risk of cold-shut.
  • the mould and stabilizer material heating means may be electric induction, radio frequency, microwave, fluid gallery or other means.
  • the moulding material is processed in a high temperature melter such as to deliver the stabiliser material in a highly fluid state to the casting mold via a screw arrangement or a ram arrangement, or both, and a heated barrel or barrels, or insulated lines or both.
  • the mould is adequately vented and a vacuum may be pulled on the vent(s) to aid the flow and placement of the stabiliser material.
  • the base material the stabiliser and wear band are moulded from may be an Elastomer or Semi-crystalline or Amorphous Polymer.
  • the selected base material may, depending on the application, be any one of Nitrile Rubber, Silicon Rubber, Polyurethane, Polyethylene including high and ultra-high Molecular Weight Polyethylenes, Polyamides (Nylon) or a PEEK type material.
  • thermoset, cross-linked or other products may however be used. Surprisingly and counter-intuitively, it has been found that the use of these polymers provides a stabiliser or wear band that can withstand the conditions necessary for both drill pipe and casing application. The use of a polymer also provides a product that has improved performance over regular DP hard-banding.
  • the moulding material may be reinforced with a suitable type of fibre such as Kevlar, Glass or Carbon Fibre or similar.
  • a suitable type of fibre such as Kevlar, Glass or Carbon Fibre or similar.
  • specialist materials such as nano-diamond, molybdenum disulfide, tourmaline or other powders may be added.
  • the base material may contain additives to aid with the dissipation of static electricity, thereby reducing the risk of sparks and reducing the build-up of magnetism in well or drilling tubulars.
  • the stabiliser and wear band stabilise the drilling or completion tubulars. They also serve to reduce torque, drag, rotational and axial stick/slip and associated vibration. This is achieved primarily through the use of materials (as listed above) that have a low coefficient of friction.
  • Various iterations of the device may replace tool joint hardbanding and enhance drilling tubular life.
  • the preferred form of stabiliser as described above has spiraled ribs, which helps to reduce annular pressure drop, thereby reducing cuttings hold-down pressure and thereby improving rate of penetration.
  • the device also reduces casing and/or drill pipe wear, open hole key- seating, differential sticking while lifting cuttings and thereby improving hole cleaning. The devices allow closer spaced points of drilling tubular support.
  • the drillable (Polymer) positive stand-off also ensures that a drilling tubular can be washed over should it inadvertently become cemented into the wellbore.
  • the standoff ribs or tool joint wear band will wear such that they are no longer effective.
  • the option may exist to over-mold the standoff ribs with new material although preferably the Polymer will be totally removed and replaced.
  • the old material will be removed and the surface buffed before the new material is applied.
  • stabilisers on drill pipe can be used in conjunction with the applied wear bands or alternatively these can be used independently of each other.
  • the stabiliser and wear resisting bands can be coloured to enable rapid and effective identification, thereby also making it easier to rotate drilling tubulars.
  • the invention as described above is effective in reducing all of the drilling problems listed in the prior art section above. It is also cost effective to use. Furthermore, should a piece of stabiliser fall off, it will not compromise the well as has been the case with other rotating and non-rotating equipment.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Lubricants (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

La présente invention se rapporte à une bande de stabilisation ou de résistance à l'usure pour éléments tubulaires de forage ou de forage tubant ou de mise en place de tubage, comprenant un corps cylindrique formé sur place par moulage autour d'un raccord de tige ou d'outil, le corps de l'outil étant constitué d'un matériau de base qui peut être un polymère élastomère, semi-cristallin ou amorphe, un matériau thermodurci ou un matériau réticulé. L'invention se rapporte aussi à un procédé de formation d'une bande de stabilisation ou de résistance à l'usure comprenant les étapes consistant à placer un moule autour d'un raccord d'outil de tige de forage, d'une tige de forage ou d'un tubage, à chauffer le moule, à traiter le matériau de base de moulage dans un appareil de fusion à température élevée et à apporter le matériau de base de moulage au moule par le biais d'un aménagement à vis et/ou vérin, et d'un ou de plusieurs cylindres chauffés, et/ou d'une ou de plusieurs conduites isolées.
PCT/NZ2014/000014 2013-02-15 2014-02-14 Bande de stabilisation et de résistance à l'usure pour raccords de tige et d'outil d'équipement de forage rotatif WO2014126481A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ60712913 2013-02-15
NZ607129 2013-02-15

Publications (2)

Publication Number Publication Date
WO2014126481A2 true WO2014126481A2 (fr) 2014-08-21
WO2014126481A3 WO2014126481A3 (fr) 2015-03-19

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PCT/NZ2014/000014 WO2014126481A2 (fr) 2013-02-15 2014-02-14 Bande de stabilisation et de résistance à l'usure pour raccords de tige et d'outil d'équipement de forage rotatif

Country Status (1)

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WO (1) WO2014126481A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104907383A (zh) * 2015-06-25 2015-09-16 王海燕 一种等壁厚螺杆泵定子管制造方法
WO2021079096A1 (fr) * 2019-10-21 2021-04-29 Mako Offshore Ltd Ensemble conducteur et procédés
US20220098936A1 (en) * 2019-01-28 2022-03-31 Russel Moore Circumferential wear bands for oilfield tubulars
WO2023281251A1 (fr) * 2021-07-04 2023-01-12 Neil Andrew Abercrombie Simpson Agitateur de déblais de forage
US12024957B2 (en) 2019-10-21 2024-07-02 Mako Offshore Ltd. Conductor assembly and methods

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9724194D0 (en) * 1997-11-15 1998-01-14 Brunel Oilfield Serv Uk Ltd Improvements in or relating to downhole tools
AU2002341386A1 (en) * 2002-08-12 2004-02-25 Eni S.P.A. Integral centraliser
GB0504365D0 (en) * 2005-03-03 2005-04-06 Probond International Ltd Superstructures for elongate members and methods of forming such superstructures
GB2490924B (en) * 2011-05-18 2013-07-10 Volnay Engineering Services Ltd Improvements in and relating to downhole tools

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104907383A (zh) * 2015-06-25 2015-09-16 王海燕 一种等壁厚螺杆泵定子管制造方法
US20220098936A1 (en) * 2019-01-28 2022-03-31 Russel Moore Circumferential wear bands for oilfield tubulars
WO2021079096A1 (fr) * 2019-10-21 2021-04-29 Mako Offshore Ltd Ensemble conducteur et procédés
GB2604469A (en) * 2019-10-21 2022-09-07 Mako Offshore Ltd Conductor assembly and methods
GB2604469B (en) * 2019-10-21 2024-02-28 Mako Offshore Ltd Conductor assembly and methods
US12024957B2 (en) 2019-10-21 2024-07-02 Mako Offshore Ltd. Conductor assembly and methods
WO2023281251A1 (fr) * 2021-07-04 2023-01-12 Neil Andrew Abercrombie Simpson Agitateur de déblais de forage

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