WO2015044151A2 - Method of sealing a well - Google Patents

Method of sealing a well Download PDF

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Publication number
WO2015044151A2
WO2015044151A2 PCT/EP2014/070279 EP2014070279W WO2015044151A2 WO 2015044151 A2 WO2015044151 A2 WO 2015044151A2 EP 2014070279 W EP2014070279 W EP 2014070279W WO 2015044151 A2 WO2015044151 A2 WO 2015044151A2
Authority
WO
WIPO (PCT)
Prior art keywords
stinger
well
location
tubing
seal
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.)
Ceased
Application number
PCT/EP2014/070279
Other languages
French (fr)
Other versions
WO2015044151A3 (en
Inventor
Pål Viggo HEMMINGSEN
Gjermund GRIMSBO
Alastair Buchanan
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.)
Equinor Energy AS
Original Assignee
Statoil Petroleum ASA
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 Statoil Petroleum ASA filed Critical Statoil Petroleum ASA
Priority to MX2016003818A priority Critical patent/MX381404B/en
Priority to BR112016006432-1A priority patent/BR112016006432B1/en
Priority to CA2925405A priority patent/CA2925405C/en
Priority to US15/024,268 priority patent/US10190387B2/en
Publication of WO2015044151A2 publication Critical patent/WO2015044151A2/en
Publication of WO2015044151A3 publication Critical patent/WO2015044151A3/en
Anticipated expiration legal-status Critical
Priority to NO20160620A priority patent/NO346176B1/en
Priority to US16/231,798 priority patent/US10480279B2/en
Ceased legal-status Critical Current

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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • 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
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/134—Bridging plugs
    • 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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells

Definitions

  • the present invention relates to a method of sealing a well.
  • the method comprises installing a permanent fluid-tight barrier for well abandonment.
  • a method of sealing a well comprising:
  • Embodiments of the invention therefore provide a method for sealing a well which does not require the entire production tubing and control cables to be removed prior to forming a seal in the well.
  • the method employs a wireline-conveyed stinger provided inside the tubing and arranged to extend over the interval provided with openings so that the sealant may flow out of the bottom end of the stinger and through the openings to seal the A-annulus between the tubing and adjacent casing.
  • each step in the method may be performed using wireline and the method may be carried out whether or not control lines are originally present in the location for the well seal.
  • the method may further comprise removing any adjacent control lines in the location for the well seal.
  • a stinger is normally a piece of tubular which is provided on a lowermost section of a tubing string to sting into another section of tubular (or a fluid or a seal) in order to perform a task such as sealing, pumping, verifying a location or opening valves etc.
  • a small diameter tubing may be inserted along the entire length of the tubing. It is therefore an advantage of the present invention that the stinger is located only in the area of interest using wireline, thereby reducing the time and cost for the operation.
  • the stinger may have a fixed length or may be extendable. The length of the stinger may depend upon on the lubrication length available and/or the length of the interval to be sealed off.
  • the stinger may be telescopic.
  • a mechanism e.g. shear screws, latches, detent rings, etc.
  • Seals e.g. O-rings or the like
  • joins are fluid-tight.
  • the telescopic stinger may comprise a valve across an end which is lowermost when the stinger is extended.
  • the valve may be configured to adopt a closed position when fluid is pumped down into the stinger to apply pressure to the release mechanism to open each telescopic section. Once the stinger is suitably (e.g. fully) expanded, a greater pressure may be applied (e.g. above hat required to release the mechanism) in order to open the valve for pumping sealant into the tubing and casing.
  • the one or more openings may be formed by removing a relatively large section of the tubing (e.g. by milling). Alternatively, the one or more openings may be formed by slicing or perforating one or more holes in a section of the tubing.
  • the method may further comprise the use of a high viscous pill deployed through the stinger to clean the location before forming the seal.
  • the seal may be provided over an interval of approximately 50m. Accordingly, the one or more openings may be provided over a similar length of interval and the stinger may also be of a similar length (when extended).
  • the step of setting the stinger in the location for the seal may comprise use of a packing element and slips to hang the stinger off the tubing at a position above the one or more openings.
  • the step of forming the seal may comprise forming a temporary or permanent plug in the well.
  • the sealant may therefore comprise cement.
  • the method may further comprise providing a transverse support ledge in the tubing below the one or more openings so as to ensure that the sealant is retained within the location for the well seal (e.g. if the well pressure alone is not sufficient for this purpose).
  • a wireline-deployed stinger for use in the method according to the first aspect of the invention.
  • a telescopic stinger for use in the method according to the first aspect of the invention.
  • Figure 1 shows a cross-sectional view of a portion of an inner casing and production tubing installed in a wellbore
  • Figure 2A shows the apparatus of Figure 1 after a section of the tubing has been removed, in a location for a well seal, in accordance with a first embodiment of the invention
  • Figure 2B shows the apparatus of Figure 1 after a plurality of openings have been sliced in the tubing, in a location for a well seal, in accordance with a second embodiment of the invention
  • Figure 2C shows the apparatus of Figure 1 after a plurality of openings have been perforated or punched in the tubing, in a location for a well seal, in accordance with a third embodiment of the invention
  • Figure 3 shows a wireline-conveyed stinger being set across the location for the well seal in the tubing of Figure 2A;
  • Figure 4 shows the injection of a sealant through the stinger of Figure 3;
  • Figure 5 shows the seal set in place in the wellbore
  • Figure 6A shows a cross-sectional view of a telescopic stinger being located in a wellbore using wireline, in accordance with an embodiment of the invention
  • Figure 6B shows the telescopic stinger of Figure 6A after its uppermost section has been set in the tubing and the innermost section has been expanded downwardly
  • Figure 6C shows the telescopic stinger of Figure 6B after a second innermost section has been expanded downwardly
  • Figure 6D shows the telescopic stinger of Figure 6C after a third innermost section has been expanded downwardly so as to fully expand the stinger in the tubing.
  • FIGS. 1 to 5 illustrate various methods for sealing a well in accordance with embodiments of the present invention.
  • a wellbore 10 is provided with a production tubing 12 extending through a casing 14 to form a so-called A-annulus there-between.
  • One or more openings is created in the tubing 12, in a location X for a well seal, as illustrated in the alternative Figures 2A, 2B and 2C.
  • Figure 2A illustrates the case where a relatively large section of the tubing 12 has been removed to create a single opening 16 extending over the entire location X for the well seal, in accordance with one embodiment of the invention.
  • Figure 2B illustrates the case where a plurality of openings 18 have been sliced in the tubing 12, in the location X for the well seal, in accordance with another embodiment of the invention.
  • Figure 2C illustrates the case where a plurality of openings 20 have been perforated or punched in the tubing 12, in the location X for the well seal, in accordance with a further embodiment of the invention.
  • Figure 3 shows a wireline-conveyed stinger 22 being set across the location X for the well seal, in the tubing 12 of Figure 2A.
  • the stinger 22 is hung from the tubing 12 above the opening 16 and extends downwardly over substantially the entire length of the opening 16.
  • the stinger 22 is installed in the tubing 12 using a wireline 24 and wireline attachment tool 26.
  • the stinger 22 is then set in place using packing elements and slips 28 so that the wireline 24 and wireline attachment tool 26 can be removed from the wellbore 10.
  • a sealant material 30 e.g. cement
  • a sealant material 30 is then injected into the uppermost portion of tubing 12 and through the stinger 22.
  • the sealant 30 flows upwardly around the stinger 22 and, due to the presence of the opening 16 also flows outwardly to fill the diameter of the casing 14.
  • Figure 5 shows the sealant 30 after it has set in the location X to form a well seal 32 in the wellbore 10. It will be noted that the seal 32 forms a transverse plug across the wellbore 10 and completely fills the space both within the stinger 22 and surrounding the stinger 22 so as to encapsulate the stinger 22 in the plug in the location X.
  • FIGs 6A through 6D show a telescopic stinger 40 which can be employed instead of the stinger 22 in Figures 3 to 6.
  • the telescopic stinger 40 comprises four telescopic sections 42 which are initially held in a compacted configuration by shear screws 44.
  • the shear screws 44 are configured to break when a pre-determined pressure is applied, thus causing the telescopic sections 42 to extend one after the other as illustrated.
  • Seals 46 are provided at the base of each telescopic section 42 to ensure the join with the telescopic section 42 below is fluid-tight when the stinger 40 is expanded.
  • a valve 48 is provided across an end which is lowermost when the stinger 40 is extended.
  • the valve 48 is configured to adopt a closed position when fluid is pumped down into the stinger 40 so as to apply pressure to the shear screws 44 to open each telescopic section 42. Once the stinger 40 is fully expanded, a greater pressure is applied to open the valve 48 for pumping sealant 30 into the tubing 12 and casing 14 as per Figures 4 and 5.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Glass Compositions (AREA)
  • Sealing Material Composition (AREA)
  • Sealing Devices (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)

Abstract

A method of sealing a well comprises creating one or more openings in a tubing installed in a wellbore, in a location for a well seal; using a wireline to locate a stinger in that location; setting the stinger in that location; and forming a seal in the well in that location, by injecting sealant through said stinger.

Description

Method of Sealing a Well
Field of the Invention
The present invention relates to a method of sealing a well. In particular embodiments, the method comprises installing a permanent fluid-tight barrier for well abandonment.
Background to the Invention
Traditional plug and abandonment operations require that the entire production tubing and associated cabling is pulled from the wellbore prior to installation of a cement plug. However, the removal of the tubing is a costly and time-consuming exercise as it requires a drill rig on site. There also associated safety risks.
It is therefore an aim of the present invention to provide an alternative method of sealing a well which helps to address the afore-mentioned problems.
Summary of the Invention
In accordance with a first aspect of the present invention there is provided a method of sealing a well comprising:
creating one or more openings in a tubing installed in a wellbore, in a location for a well seal;
using a wireline to locate a stinger in said location;
setting the stinger in said location; and
forming a seal in the well in said location, by injecting sealant through said stinger.
Embodiments of the invention therefore provide a method for sealing a well which does not require the entire production tubing and control cables to be removed prior to forming a seal in the well. The method employs a wireline-conveyed stinger provided inside the tubing and arranged to extend over the interval provided with openings so that the sealant may flow out of the bottom end of the stinger and through the openings to seal the A-annulus between the tubing and adjacent casing. Conveniently, each step in the method may be performed using wireline and the method may be carried out whether or not control lines are originally present in the location for the well seal. In certain embodiments, the method may further comprise removing any adjacent control lines in the location for the well seal.
It will be understood that, in practice, there will be heavy fluid in the A-annulus and in the tubing below the stinger and this will create a pressure differential causing the sealant which is pumped down an upper portion of tubing and through the stinger to flow upwards on exiting the stinger. If the method was employed without a stinger across the open section, the sealant would only flow through the upper openings due to the pressure from below. The provision of a stinger therefore ensures that the sealant is placed across the entire section of open tubing.
It will be understood that a stinger is normally a piece of tubular which is provided on a lowermost section of a tubing string to sting into another section of tubular (or a fluid or a seal) in order to perform a task such as sealing, pumping, verifying a location or opening valves etc. Alternatively, a small diameter tubing may be inserted along the entire length of the tubing. It is therefore an advantage of the present invention that the stinger is located only in the area of interest using wireline, thereby reducing the time and cost for the operation. The stinger may have a fixed length or may be extendable. The length of the stinger may depend upon on the lubrication length available and/or the length of the interval to be sealed off.
In certain embodiments, the stinger may be telescopic. In which case, a plurality of telescopic sections may be held in a compacted configuration by a mechanism (e.g. shear screws, latches, detent rings, etc.) configured to release when a pre-determined pressure is applied, thus causing the telescopic sections to extend. Seals (e.g. O-rings or the like) may be provided between each telescopic section to ensure the joins are fluid-tight.
The telescopic stinger may comprise a valve across an end which is lowermost when the stinger is extended. The valve may be configured to adopt a closed position when fluid is pumped down into the stinger to apply pressure to the release mechanism to open each telescopic section. Once the stinger is suitably (e.g. fully) expanded, a greater pressure may be applied (e.g. above hat required to release the mechanism) in order to open the valve for pumping sealant into the tubing and casing.
The one or more openings may be formed by removing a relatively large section of the tubing (e.g. by milling). Alternatively, the one or more openings may be formed by slicing or perforating one or more holes in a section of the tubing.
The method may further comprise the use of a high viscous pill deployed through the stinger to clean the location before forming the seal.
Typically, the seal may be provided over an interval of approximately 50m. Accordingly, the one or more openings may be provided over a similar length of interval and the stinger may also be of a similar length (when extended). The step of setting the stinger in the location for the seal may comprise use of a packing element and slips to hang the stinger off the tubing at a position above the one or more openings.
The step of forming the seal may comprise forming a temporary or permanent plug in the well. The sealant may therefore comprise cement.
The method may further comprise providing a transverse support ledge in the tubing below the one or more openings so as to ensure that the sealant is retained within the location for the well seal (e.g. if the well pressure alone is not sufficient for this purpose).
According to a second aspect of the invention, there is provided a wireline-deployed stinger for use in the method according to the first aspect of the invention. According to a third aspect of the invention, there is provided a telescopic stinger for use in the method according to the first aspect of the invention.
Brief Description of the Drawings
Specific embodiments of the present invention will now be described with reference to the accompanying drawings, in which: Figure 1 shows a cross-sectional view of a portion of an inner casing and production tubing installed in a wellbore;
Figure 2A shows the apparatus of Figure 1 after a section of the tubing has been removed, in a location for a well seal, in accordance with a first embodiment of the invention;
Figure 2B shows the apparatus of Figure 1 after a plurality of openings have been sliced in the tubing, in a location for a well seal, in accordance with a second embodiment of the invention;
Figure 2C shows the apparatus of Figure 1 after a plurality of openings have been perforated or punched in the tubing, in a location for a well seal, in accordance with a third embodiment of the invention;
Figure 3 shows a wireline-conveyed stinger being set across the location for the well seal in the tubing of Figure 2A;
Figure 4 shows the injection of a sealant through the stinger of Figure 3;
Figure 5 shows the seal set in place in the wellbore;
Figure 6A shows a cross-sectional view of a telescopic stinger being located in a wellbore using wireline, in accordance with an embodiment of the invention;
Figure 6B shows the telescopic stinger of Figure 6A after its uppermost section has been set in the tubing and the innermost section has been expanded downwardly; Figure 6C shows the telescopic stinger of Figure 6B after a second innermost section has been expanded downwardly; and
Figure 6D shows the telescopic stinger of Figure 6C after a third innermost section has been expanded downwardly so as to fully expand the stinger in the tubing. Detailed Description of Certain Embodiments
Figures 1 to 5 illustrate various methods for sealing a well in accordance with embodiments of the present invention.
As shown in Figure 1 , a wellbore 10 is provided with a production tubing 12 extending through a casing 14 to form a so-called A-annulus there-between. One or more openings is created in the tubing 12, in a location X for a well seal, as illustrated in the alternative Figures 2A, 2B and 2C. Figure 2A illustrates the case where a relatively large section of the tubing 12 has been removed to create a single opening 16 extending over the entire location X for the well seal, in accordance with one embodiment of the invention. Figure 2B illustrates the case where a plurality of openings 18 have been sliced in the tubing 12, in the location X for the well seal, in accordance with another embodiment of the invention.
Figure 2C illustrates the case where a plurality of openings 20 have been perforated or punched in the tubing 12, in the location X for the well seal, in accordance with a further embodiment of the invention.
Figure 3 shows a wireline-conveyed stinger 22 being set across the location X for the well seal, in the tubing 12 of Figure 2A. Thus, the stinger 22 is hung from the tubing 12 above the opening 16 and extends downwardly over substantially the entire length of the opening 16. As shown in Figure 3, the stinger 22 is installed in the tubing 12 using a wireline 24 and wireline attachment tool 26. The stinger 22 is then set in place using packing elements and slips 28 so that the wireline 24 and wireline attachment tool 26 can be removed from the wellbore 10.
As shown in Figure 4, a sealant material 30 (e.g. cement) is then injected into the uppermost portion of tubing 12 and through the stinger 22. As explained above, due to typical well pressures in the tubing 12 and A-annulus, on exiting the lowermost end of the stinger 22, the sealant 30 flows upwardly around the stinger 22 and, due to the presence of the opening 16 also flows outwardly to fill the diameter of the casing 14.
Figure 5 shows the sealant 30 after it has set in the location X to form a well seal 32 in the wellbore 10. It will be noted that the seal 32 forms a transverse plug across the wellbore 10 and completely fills the space both within the stinger 22 and surrounding the stinger 22 so as to encapsulate the stinger 22 in the plug in the location X.
Figures 6A through 6D show a telescopic stinger 40 which can be employed instead of the stinger 22 in Figures 3 to 6. As shown in Figure 6A, the telescopic stinger 40 comprises four telescopic sections 42 which are initially held in a compacted configuration by shear screws 44. The shear screws 44 are configured to break when a pre-determined pressure is applied, thus causing the telescopic sections 42 to extend one after the other as illustrated. Seals 46 are provided at the base of each telescopic section 42 to ensure the join with the telescopic section 42 below is fluid-tight when the stinger 40 is expanded.
A valve 48 is provided across an end which is lowermost when the stinger 40 is extended. The valve 48 is configured to adopt a closed position when fluid is pumped down into the stinger 40 so as to apply pressure to the shear screws 44 to open each telescopic section 42. Once the stinger 40 is fully expanded, a greater pressure is applied to open the valve 48 for pumping sealant 30 into the tubing 12 and casing 14 as per Figures 4 and 5.
It will be appreciated by persons skilled in the art that various modifications may be made to the above-described embodiments without departing from the scope of the present invention, as defined by the claims. It will also be appreciated that features described in relation to one embodiment may be mixed and matched with features of another embodiment.

Claims

CLAIMS:
A method of sealing a well comprising:
creating one or more openings in a tubing installed in a wellbore, in a location for a well seal;
using a wireline to locate a stinger in said location;
setting the stinger in said location; and
forming a seal in the well in said location, by injecting sealant through said stinger.
The method according to claim 1 wherein the stinger is extendable.
3. The method according to claim 2 wherein the stinger is telescopic.
The method according to claim 3 wherein a plurality of telescopic sections are held in a compacted configuration by a mechanism configured to release when a pre-determined pressure is applied, thus causing the telescopic sections to extend.
The method according to claim 3 or 4 wherein the stinger comprises a valve across an end which is lowermost when the stinger is extended.
The method according to claim 5, when dependent on claim 4, wherein valve is configured to adopt a closed position when fluid is pumped down into the stinger to apply pressure to the release mechanism to open each telescopic section.
The method according to claim 6 wherein, once the stinger is expanded, a pressure above that required to release the mechanism is applied in order to open the valve for pumping sealant out of the end of the stinger.
8. The method according to any preceding claim wherein the one or more openings is formed by removing a section of the tubing.
9. The method according to any one of claims 1 to 7 wherein the one or more openings is formed by slicing or perforating one or more holes in a section of the tubing. 10. The method according to any preceding claim further comprising the use of a high viscous pill deployed through the stinger to clean the location before forming the seal.
1 1 . The method according to any preceding claim wherein the step of forming the seal comprises forming a permanent plug in the well.
12. The method according to any preceding claim further comprising providing a transverse support ledge in the tubing below the one or more openings so as to ensure that the sealant is retained within the location for the well seal.
13. A wireline-deployed stinger for use in the method according to any preceding claim.
14. A telescopic stinger for use in the method according to any one of claims 1 to 12.
15. A method of sealing a well substantially as described herein with reference to the accompanying drawings. 16. A wireline-deployed stinger substantially as described herein with reference to the accompanying drawings.
17. A telescopic stinger substantially as described herein with reference to the accompanying drawings.
PCT/EP2014/070279 2013-09-25 2014-09-23 Method of sealing a well Ceased WO2015044151A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
MX2016003818A MX381404B (en) 2013-09-25 2014-09-23 METHOD FOR SEALING A WELL.
BR112016006432-1A BR112016006432B1 (en) 2013-09-25 2014-09-23 Method for sealing a well
CA2925405A CA2925405C (en) 2013-09-25 2014-09-23 Method of sealing a well
US15/024,268 US10190387B2 (en) 2013-09-25 2014-09-23 Method of sealing a well
NO20160620A NO346176B1 (en) 2013-09-25 2016-04-14 Method of Sealing a Well
US16/231,798 US10480279B2 (en) 2013-09-25 2018-12-24 Method of sealing a well

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1317000.6 2013-09-25
GB1317000.6A GB2518612B (en) 2013-09-25 2013-09-25 Method of sealing a well

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US15/024,268 A-371-Of-International US10190387B2 (en) 2013-09-25 2014-09-23 Method of sealing a well
US16/231,798 Continuation US10480279B2 (en) 2013-09-25 2018-12-24 Method of sealing a well

Publications (2)

Publication Number Publication Date
WO2015044151A2 true WO2015044151A2 (en) 2015-04-02
WO2015044151A3 WO2015044151A3 (en) 2015-06-18

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PCT/EP2014/070279 Ceased WO2015044151A2 (en) 2013-09-25 2014-09-23 Method of sealing a well

Country Status (7)

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US (2) US10190387B2 (en)
BR (1) BR112016006432B1 (en)
CA (1) CA2925405C (en)
GB (1) GB2518612B (en)
MX (1) MX381404B (en)
NO (1) NO346176B1 (en)
WO (1) WO2015044151A2 (en)

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NO335153B1 (en) * 2011-02-03 2014-10-06 Tco As Tool and method for shutting down a well
US10018011B2 (en) * 2012-10-16 2018-07-10 Maersk Olie Og Gas A/S Sealing apparatus and method
NO342616B1 (en) * 2015-09-11 2018-06-18 Wellguard As A plugging tool, and method of plugging a well

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110168191A (en) * 2016-11-07 2019-08-23 艾奎诺能源公司 Methods of plugging and pressure testing wells
US11274515B2 (en) 2016-11-07 2022-03-15 Equinor Energy As Method of plugging and pressure testing a well
US11680454B2 (en) 2016-11-07 2023-06-20 Equinor Energy As Method of plugging and pressure testing a well
US10392885B2 (en) 2016-11-24 2019-08-27 Statoil Petroleum As Method and apparatus for plugging a well

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NO346176B1 (en) 2022-04-04
CA2925405A1 (en) 2015-04-02
MX381404B (en) 2025-03-11
BR112016006432B1 (en) 2022-05-17
MX2016003818A (en) 2016-08-04
US20190178050A1 (en) 2019-06-13
GB201317000D0 (en) 2013-11-06
CA2925405C (en) 2021-04-13
GB2518612A (en) 2015-04-01
US10480279B2 (en) 2019-11-19
GB2518612B (en) 2020-07-15
BR112016006432A2 (en) 2017-08-01
WO2015044151A3 (en) 2015-06-18
US20160230499A1 (en) 2016-08-11
NO20160620A1 (en) 2016-04-14
US10190387B2 (en) 2019-01-29

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