EP2818627A1 - Joint de réparation de cuvelage et outil de pose - Google Patents

Joint de réparation de cuvelage et outil de pose Download PDF

Info

Publication number
EP2818627A1
EP2818627A1 EP13173981.5A EP13173981A EP2818627A1 EP 2818627 A1 EP2818627 A1 EP 2818627A1 EP 13173981 A EP13173981 A EP 13173981A EP 2818627 A1 EP2818627 A1 EP 2818627A1
Authority
EP
European Patent Office
Prior art keywords
patch
intermediate part
tool
setting tool
end parts
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP13173981.5A
Other languages
German (de)
English (en)
Inventor
Lars Staehr
Hans Plessing
Ricardo Reves Vasques
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Welltec AS
Original Assignee
Welltec AS
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 Welltec AS filed Critical Welltec AS
Priority to EP13173981.5A priority Critical patent/EP2818627A1/fr
Priority to PCT/EP2014/063482 priority patent/WO2014207086A1/fr
Priority to PCT/EP2014/063478 priority patent/WO2014207085A1/fr
Publication of EP2818627A1 publication Critical patent/EP2818627A1/fr
Withdrawn legal-status Critical Current

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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
    • E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/10—Reconditioning of well casings, e.g. straightening

Definitions

  • the present invention relates to a tubular patch adapted to surround a part of a tool body downhole and to a patch setting tool for sealing off an opening in a weak part of a casing in a well. Furthermore, the invention relates to a downhole patch setting system and a patch setting method.
  • a tubular patch adapted to surround a part of a tool body downhole comprising
  • the intermediate part may have an inner diameter being larger than that of the first and second end parts.
  • the intermediate part may have a thickness being less than 60% of the thickness of the first and second end parts, preferably less than 50% of the thickness of the first and second end parts.
  • the intermediate part may be made mainly of metal.
  • the intermediate part may be made of a material different from that of the first and second end parts.
  • the second end part may have an indentation.
  • the intermediate part may have an outer face, and a patch sealing element may be arranged on the outer face.
  • first and second end parts may taper towards the intermediate part.
  • the intermediate part may be connected to the first and second end parts by means of friction welding.
  • the intermediate part may be made of a material being more elastic than a material of the first and second parts.
  • first and second end parts may be made of material which is acid-dissolvable.
  • the material of the first and second end parts may be aluminium.
  • the material of the first and second end parts may be composite steel, plastic, reinforced plastic, fiber glass and/or carbon.
  • the present invention furthermore relates to a patch setting tool for sealing off an opening in a weak part of a casing in a well, comprising:
  • the patch setting tool may further comprise a pump for pressurising a fluid.
  • the patch setting tool may further comprise sealing elements arranged between the first and second end parts and the tool body.
  • the patch setting tool may further comprising a holding means for holding the patch on the tool body.
  • the holding means may comprise a stop for preventing the patch from moving axially in one direction, wherein and the holding means further comprises a retractable retainer unit.
  • the retainer unit may comprise a cylinder and a piston dividing the cylinder into a first chamber part and a second chamber part, wherein the first chamber part is fluidly connected with the fluid channel and the piston has a projection part engaging an indentation in the patch.
  • a spring may be arranged in the first chamber part.
  • the retainer unit may comprise a breakable element arranged in the second chamber part for maintaining the projection part in engagement with the indentation.
  • a valve may be arranged in the fluid channel upstream of the first chamber part.
  • valve may be activated at a certain differential pressure.
  • sealing elements may comprise a split ring-shaped retaining element.
  • the stop may be retractable.
  • the stop may be axially movable in relation to the tool body.
  • the patch setting tool may further comprise a milling bit and an anchoring section having projectable anchors.
  • the milling bit may be axially movable and rotatable in relation to the tool body.
  • the tool may further comprise a driving unit, such as a downhole tractor, for propelling the tool forward in the well.
  • a driving unit such as a downhole tractor
  • the tool may comprise a plurality of patches.
  • the present invention furthermore relates to a downhole patch setting system comprising a patch setting tool as described above and a casing having an opening or a weak part.
  • the present invention relates to a patch setting method for setting a tubular patch as described above, using a patch setting tool as described above, the method comprising the steps of:
  • Fig. 1 shows a patch setting tool 1 for sealing off an opening 2 in or weak part of a casing 3 in a well 4.
  • the tool comprises a tool body 5 having a fluid channel 11 extending within the tool body and ending in an aperture 10 in an outer face 30 of the tool body.
  • the tool 1 has a tubular patch 6 surrounding part of the tool body 5.
  • the patch 6 has a first end part 7, a second end part 8 and an intermediate part 9 intermediate the first and second end parts.
  • the intermediate part 9 has a thickness t i being smaller than a thickness t e of the first and second end parts 7, 8.
  • the aperture 10 of the fluid channel 11 faces the intermediate part 9, meaning that when pressurised fluid is forced out of the aperture, the intermediate part is expanded as the pressurised fluid fills up a space 32 between the intermediate part and the outer face 30 of the tool body 5.
  • the space 32 increases as the intermediate part 9 is expanded.
  • the intermediate part 9 has an inner diameter ID i being larger than an inner diameter ID e of the first and second end parts 7, 8. Sealing elements 14 are arranged between the first and second end parts 7, 8 of the patch 6 and the tool body 5 so that the space 32 is sealed off and can be pressurised.
  • the intermediate part 9 is fastened to the first and second end parts 7, 8, and as the pressurised fluid pressurise the patch 6 from within, only the intermediate part of the patch is expanded, as shown in Fig. 2 .
  • the first and second end parts 7, 8 have a substantial thickness compared to the intermediate part 9 to ensure that only the intermediate part is expanded and that the end parts are able to maintain the seals provided by the sealing elements 14.
  • the intermediate part 9 may have a thickness being less than 60% of the thickness of the first and second end parts, preferably less than 50% of the thickness of the first and second end parts.
  • the patch setting tool 1 comprises a pump 12 for pressurising the fluid in order to expand part of the patch 6.
  • the pump 12 may also be arranged at the surface to pressurise the casing 3 from within and further into the tool body 5.
  • the patch 6 is maintained around the tool body 5 as the tool 1 is submerged into the well 4 by means of a holding means 15 for holding the patch on the tool body.
  • the holding means 15 comprises a stop 16 for preventing the patch from moving axially in a first direction, and in the other end of patch, the holding means further comprises a retractable retainer unit 17 retaining the patch in a direction opposite the first direction.
  • the holding means 15 releases the patch, as shown in Fig. 3 , and then, the tool 1 can be retracted from the patch, leaving the patch in the well opposite the openings 2 to be sealed off, as shown Fig. 4 . Subsequently, the first and second end parts 7, 8 of the patch are removed, either by milling, as shown in Fig. 5 , or by acid, leaving the intermediate part as the final patch, as shown in Fig. 6 .
  • the retractable retainer unit 17 comprises a cylinder 18 and a piston 19 movable within the cylinder and dividing the cylinder into a first chamber part 20 and second chamber part 21.
  • the first chamber part 20 is fluidly connected with the fluid channel 11 so that the pressurised fluid can enter the first chamber part.
  • the piston 19 has a projection part 22 engaging an indentation 23 in the second part of the patch 6 for holding the patch in the axial direction.
  • the patch 6 is slid onto the tool body 5 over the projection part 22, and as the patch reaches the stop 16, the projection part engages the indentation 23, thereby preventing the patch from moving axially along the tool body as the tool 1 is submerged into the well 4 and also during expansion of the intermediate part 9.
  • a spring 24 is arranged in the first chamber part 20, forcing the piston 19 and the projection part 22 out of engagement with the indentation 23, thus helping the fluid move the piston to release the patch 6 from the tool body 5, as shown in Fig. 3 .
  • the retractable retainer unit 17 comprises a breakable element 36, such as a shear pin, arranged in the second chamber part 21 for maintaining the projection part 22 in engagement with the indentation 23, as shown in Figs. 1 and 2 .
  • a valve 31 may be arranged in the fluid channel 11 upstream of the first chamber part 20. The valve 31 is activated at a certain differential pressure occurring when the space 32 has been pressurised and the intermediate part 9 has been expanded. Then, the pressure is built up even further and the valve 31 opens and lets the fluid into the first chamber part 20.
  • the sealing elements 14 may be any kind of seal and may comprise a split ring-shaped retaining element arranged in a groove in the tool body 5 between first and second circumferential edges, and the split ring-shaped retaining element has several windings so that when the patch 6 is expanded, the split ring-shaped retaining element partly unwinds. In this way, the sealing elements 14 are able to compensate for a slight movement of the first and second end parts 7, 8, should such movements occur.
  • the stop 16 is fixed, however, in another embodiment, the stop is retractable into the tool body 5 so that the tool body can pass a set patch 6 and move further into the casing 3.
  • the patch setting tool may be reused for setting several patches in one run, as shown in Fig. 7 , and the milling bits 33 shown in Fig. 5 may also be moved to remove the first and second end parts 7, 8 in the same run.
  • the patch setting tool further comprises an anchoring section 34 having projectable anchors 35.
  • the milling bits 33 are axially movable and rotatable in relation to the tool body to be able to remove the end parts.
  • the intermediate part 9 has an outer face 26, and a patch sealing element 25 is arranged on the outer face 26 of the patch.
  • a patch sealing element 25 is arranged on the outer face 26 of the patch.
  • the intermediate part 9 being connected to the first and second end parts may be performed by means of frictional welding.
  • the ends of the parts are forced to abut each other, and the parts are rotated in relation to each other.
  • a rotating pin between the parts may also be used.
  • the intermediate part 9 may be made of a material being more elastic than a material of the first and second parts.
  • the first and second end parts may be made of material which is acid-dissolvable, i.e. almost any metal, and preferably aluminium.
  • the first and second end parts may also be made of stainless steel, composite steel, plastic, reinforced plastic, fiber glass and/or carbon.
  • the intermediate part 9 may be made of a material different from that of the first and second end parts.
  • the material of the intermediate part may be more elastic.
  • the invention further relates to a downhole patch setting system 100 comprising the patch setting tool 1 and a casing 3 having an opening 2 or a weak part.
  • the patch is set by inserting the patch setting tool into the casing in a well, and the intermediate part 9 of the patch is positioned opposite the aperture to be sealed or opposite the weak part. Then, the fluid is pressurised, and the pressurised fluid is let through the aperture to expand the intermediate part by means of the pressurised fluid so that the intermediate part abuts the casing for sealing off the opening 2 or the weak part. Subsequently, the tool is moved away from the patch, and the first and second end parts of the patch are removed, either by milling the ends out or by injecting acid into the casing.
  • a first intermediate part of the patch first set extends in a straight line, and the second intermediate part of a second patch partly rests upon the first patch so that the sealing elements of the patch seal on the inner face of the first set patch.
  • the third intermediate part of a third patch rests against the second patch and seals to the inner face of the second patch. In this way, a larger region in the axial extension of the casing 3 can be sealed off, which is especially useful when sealing off a longer perforation zone.
  • the invention furthermore relates to a patch setting method for setting the tubular patch, using the patch setting tool.
  • the method comprises the steps of inserting the patch setting tool into a casing in a well and positioning the intermediate part of the patch opposite the aperture to be sealed off or opposite a weak part. Then fluid is pressurised and let through the aperture to expand the intermediate part by means of the pressurised fluid so that the intermediate part abuts the casing and seals off the opening or weak part. Subsequently, the tool is moved away from the patch and the first and second end parts of the patch are removed.
  • fluid or well fluid any kind of fluid that may be present in oil or gas wells downhole, such as natural gas, oil, oil mud, crude oil, water, etc.
  • gas is meant any kind of gas composition present in a well, completion, or open hole
  • oil is meant any kind of oil composition, such as crude oil, an oil-containing fluid, etc.
  • Gas, oil, and water fluids may thus all comprise other elements or substances than gas, oil, and/or water, respectively.
  • a casing any kind of pipe, tubing, tubular, liner, string etc. used downhole in relation to oil or natural gas production.
  • a driving unit such as a downhole tractor can be used to push the tool all the way into position in the well.
  • the downhole tractor may have projectable arms having wheels, wherein the wheels contact the inner surface of the casing for propelling the tractor and the tool forward in the casing.
  • a downhole tractor is any kind of driving tool capable of pushing or pulling tools in a well downhole, such as a Well Tractor®.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
EP13173981.5A 2013-06-27 2013-06-27 Joint de réparation de cuvelage et outil de pose Withdrawn EP2818627A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP13173981.5A EP2818627A1 (fr) 2013-06-27 2013-06-27 Joint de réparation de cuvelage et outil de pose
PCT/EP2014/063482 WO2014207086A1 (fr) 2013-06-27 2014-06-26 Structure de base annulaire de fond
PCT/EP2014/063478 WO2014207085A1 (fr) 2013-06-27 2014-06-26 Outil de fixation de pièce

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13173981.5A EP2818627A1 (fr) 2013-06-27 2013-06-27 Joint de réparation de cuvelage et outil de pose

Publications (1)

Publication Number Publication Date
EP2818627A1 true EP2818627A1 (fr) 2014-12-31

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EP13173981.5A Withdrawn EP2818627A1 (fr) 2013-06-27 2013-06-27 Joint de réparation de cuvelage et outil de pose

Country Status (1)

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EP (1) EP2818627A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU169386U1 (ru) * 2016-12-19 2017-03-16 Талгат Раисович Камалетдинов Устройство для перекрытия зон поглощения технической жидкости в буровых скважинах
WO2021012289A1 (fr) * 2019-07-24 2021-01-28 屈波 Dispositif composite de revêtement pour pipeline
CN117552738A (zh) * 2024-01-09 2024-02-13 易盘达石油科技有限公司 一种油井套管补贴管柱及施工方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120205124A1 (en) * 2009-04-24 2012-08-16 Lev Ring System and method to expand tubulars below restrictions
WO2012127229A2 (fr) * 2011-03-21 2012-09-27 Read Well Services Limited Appareil et procédé permettant de fixer et de fermer hermétiquement une partie tubulaire sur un autre élément tubulaire
US20130048308A1 (en) * 2011-08-23 2013-02-28 Baker Hughes Incorporated Integrated Continuous Liner Expansion Method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120205124A1 (en) * 2009-04-24 2012-08-16 Lev Ring System and method to expand tubulars below restrictions
WO2012127229A2 (fr) * 2011-03-21 2012-09-27 Read Well Services Limited Appareil et procédé permettant de fixer et de fermer hermétiquement une partie tubulaire sur un autre élément tubulaire
US20130048308A1 (en) * 2011-08-23 2013-02-28 Baker Hughes Incorporated Integrated Continuous Liner Expansion Method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU169386U1 (ru) * 2016-12-19 2017-03-16 Талгат Раисович Камалетдинов Устройство для перекрытия зон поглощения технической жидкости в буровых скважинах
WO2021012289A1 (fr) * 2019-07-24 2021-01-28 屈波 Dispositif composite de revêtement pour pipeline
CN117552738A (zh) * 2024-01-09 2024-02-13 易盘达石油科技有限公司 一种油井套管补贴管柱及施工方法
CN117552738B (zh) * 2024-01-09 2024-03-12 易盘达石油科技有限公司 一种油井套管补贴管柱及施工方法

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