WO2003042494A1 - Procede et appareil pour la stabilisation d'un puits de forage - Google Patents

Procede et appareil pour la stabilisation d'un puits de forage Download PDF

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Publication number
WO2003042494A1
WO2003042494A1 PCT/EP2002/012719 EP0212719W WO03042494A1 WO 2003042494 A1 WO2003042494 A1 WO 2003042494A1 EP 0212719 W EP0212719 W EP 0212719W WO 03042494 A1 WO03042494 A1 WO 03042494A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
ofthe
borehole
pipe
fluid
Prior art date
Application number
PCT/EP2002/012719
Other languages
English (en)
Inventor
Gérard DACCORD
Benoit Vidick
Jean-Philippe Bedel
Marc Thiercelin
Original Assignee
Services Petroliers Schlumberger
Schlumberger Technology B.V.
Schlumberger Holdings Limited
Sofitech N.V.
Schlumberger Canada Limited
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 Services Petroliers Schlumberger, Schlumberger Technology B.V., Schlumberger Holdings Limited, Sofitech N.V., Schlumberger Canada Limited filed Critical Services Petroliers Schlumberger
Publication of WO2003042494A1 publication Critical patent/WO2003042494A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/003—Means for stopping loss of drilling fluid
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/025—Consolidation of loose sand or the like round the wells without excessively decreasing the permeability thereof
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock

Definitions

  • the present invention relates to the stabilisation or treatment of boreholes, in particular oil, gas, water or geothermal wells or the like.
  • the methods and apparatus according to the invention utilise a sleeve around a delivery tube to confine a treatment fluid in a zone to be stabilised or isolated.
  • stabilisation is used to include isolation, treatment and stabilisation of the formation or of the annulus inside the borehole.
  • Stabilisation of boreholes can take several forms. In zonal isolation, the stabilisation takes the form of a seal placed over a zone of the borehole to prevent fluids flowing into or out of the zone. This is typically achieved by placing a tubular casing inside the borehole and filling the annulus between the casing and the borehole wall with impermeable cement. Often the zone to be isolated is of relatively limited axial extent, but the only way to ensure that the cement sheath extends over the zone of interest is to cement a relatively long part of the well from below the zone to above it. It is often difficult to ensure that small volumes of cement are set in the proper place.
  • Other forms of stabilisation or treatment include squeeze cementing for consolidation, gravel packing and other such treatments.
  • Similar processes can also be used where the borehole passes through weak or unconsolidated formations that can be easily eroded during drilling or production from the well.
  • the drilling fluid being used to drill the well is often lost into the formation. This situation is known as lost circulation and can lead to significant increase in cost of the drilling operation due to the loss of the drilling fluid and the difficulty in controlling the drilling process.
  • it is possible to remedy lost circulation by adding materials to the drilling fluid which plug the formation around the borehole and reduce or prevent further fluid loss.
  • a current approach is to set a cement plug in the borehole and then drill though the cement plug, the remaining cement acting as an impermeable barrier to further fluid loss in the zone in question.
  • ECP's external casing packers
  • ECP's are rubber sleeves that are placed around casings or liners that are not otherwise cemented into the borehole.
  • One typical case of this is found in the use of slotted liners, where it is not possible to create the cement sheath because the slots in the liner allow fluid communication between the annulus and the inside of the liner over substantially all of its surface.
  • ECP's are placed around the liners at various positions in the well and can be inflated by pumping cement into them so as to cause them to seal against the formation.
  • ECP This blocks the annulus and forces fluid flow to pass inside the liner, at which point other well interventions can take place to control the flow or production.
  • ECP's are also not particularly effective, either because they are often damaged during placement in the well, or because they fail to inflate and seal properly.
  • a first aspect of the invention provides apparatus for stabilising a borehole, comprising: a delivery pipe for delivering a treatment fluid to a zone of the borehole to be stabilised, the pipe having an opening such that a treatment fluid can flow from the pipe into the zone; and a flexible, expandable sleeve secured on the outside of the pipe around the opening such that fluid flowing from the pipe through the opening flows into the sleeve; characterised in that the sleeve is formed from a permeable material.
  • the permeable material can allow at least a portion of the fluid to pass therethrough into contact with the zone of the borehole.
  • the portion of the treatment fluid passing through the sleeve can be a predominantly liquid component of the fluid so as to form an enriched layer of solids near the sleeve.
  • Such solids can include fibres or other materials included in the fluid to form a filter cake inside the sleeve.
  • the delivery pipe preferably comprises a tube formed from aluminium or fibre reinforced plastics material or other such material.
  • the delivery pipe typically has a diameter that is smaller than the diameter of the borehole in the zone to be stabilised and smaller than the diameter of any casing above this zone.
  • the stinger can connected to the remaining part of the delivery pipe by means of a releasable connector which is operable such that the remaining part of the delivery pipe can be disconnected from the stinger and withdrawn from the borehole after the treatment fluid has been placed.
  • Openings in the delivery pipe are preferably in the sidewall of the delivery pipe, the sleeve being connected to the outside of the pipe above and below the openings.
  • the sleeve preferably has a mesh-like structure that can be formed, for example, by weaving or knitting fibres. Suitable fibre materials are steel, glass fibre, carbon fibre, Kevlar and other such materials, and combinations thereof.
  • the mesh is typically sufficiently loose to allow expansion of the sleeve when filled with treatment fluid without losing its ability to retain at least part of the fluid. This expansion can be up to 50% of the unexpanded diameter of the sleeve, although even greater expansion can be achieved according to the design of the mesh and the degree of filtering required.
  • the unexpanded diameter of the sleeve can typically be 3 - 4 times the diameter of the delivery pipe.
  • a second aspect of the invention provides a method of stabilising a borehole, comprising: positioning a pipe in the borehole to deliver a treatment fluid to a zone to be stabilised, the pipe having an opening such that the fluid can flow from the pipe into the zone; securing a sleeve on the outside of the pipe around the opening such that fluid flowing from the pipe through the opening flows into the sleeve; and flowing the treatment fluid through the pipe opening into the sleeve; characterised in that the sleeve is formed from a permeable material, the method further comprising flowing the treatment fluid into the sleeve such that at least that at least a portion of the fluid passes therethrough into contact with the zone of the borehole.
  • treatment fluid is placed in the sleeve so as to expand the sleeve until it fills substantially all of the annulus in the zone to be stabilised.
  • the annulus is very large or irregular, it may be desirable to fill the sleeve until a predetermined pressure of fluid is reached.
  • One suitable treatment fluid is preferably a cement slurry comprising liquid and solid components.
  • the effect of the sleeve is to concentrate the solid component of the slurry near the borehole wall leading to improved physical properties in this region.
  • suitable plugging materials such as fibres, in the slurry.
  • the plugging materials chosen, typically fibres, are selected according to the mesh size of the sleeve.
  • a cement slurry with an optimised particle size distribution of solid materials to obtain a high packing volume fraction.
  • Other treatment fluids may also be useful in the present invention, for example dispersed gels or polymers that can concentrate at the borehole wall, or materials for sand control, gravel packs or the like.
  • Figure 1 shows one embodiment of the invention
  • Figure 2 shows the embodiment of Figure 1 in use
  • Figure 3 shows a later phase of the use of the embodiment of Figure l
  • Figure 4 shows a borehole that has been stabilised after under-reaming.
  • Figure 1 shows a borehole 10 which has been drilled into a highly fractured and permeable formation 12 that has a relatively low formation pressure. Consequently, drilling fluid is lost to the formation because the hydrostatic pressure of the fluid at this depth exceeds the formation pressure and the highly fractured nature of the formation 12 means that it is not possible to build a mud cake on the wall of the borehole to prevent fluid loss. Drilling is stopped and the drill string withdrawn from the borehole.
  • An apparatus 14 according to one embodiment of the invention is connected to drill pipe 16 as shown in Figure 1 and lowered into the borehole to the level of the zone to be stabilised 12.
  • the apparatus 14 comprises a drillable stinger 18 formed from an aluminium tube (other drillable materials such as fibre reinforced composites can also be used) which is connected to the lower end of the drill pipe 16 by means of a pressure operated disconnect 20.
  • the length and diameter of the stinger will be selected according to operational requirements, e.g. length of zone to be stabilised, hole diameter, thickness of cement required.
  • the disconnect is operable by pumping a dart or ball down the inside of the drill pipe 16 to sit in a seat and cause sufficient pressure to build to break shear pins (not shown) in the conventional manner.
  • Ports 22 are provided in the stinger 18 near its lower end 24 which is otherwise closed.
  • Pressure relief ports 26 are provided near the upper end 28 of the stinger 18.
  • a permeable sleeve 30 is secured around the outside of the stinger below the ports 22 and pressure relief ports 26 so as to extend along the outer surface of the stinger 18 in the stabilisation zone 12.
  • the sleeve 30 can be formed from a woven carbon fibre or Kevlar material such as the preformed tubular materials available from A&P Technology under reference RA3827SPAR and RF1345 (it will be appreciated that other materials can also be used). For a nominal 8 inch borehole, an 8 inch sleeve (unexpanded) is proposed.
  • the sleeve 30 is attached to the stinger 18 by means of clamps 32 that are made from a drillable material such as epoxy resin materials, aluminium, etc..
  • cement slurry is pumped down the drill pipe 16 from mixing equipment at the surface (not shown) into the stinger 18 and from there into the sleeve 30 through the ports 22.
  • the cement fills the sleeve 30 and causes it to expand until it comes into contact with the formation 12.
  • a typical expansion might be up to 50% of the starting diameter of the sleeve 30 in its unexpanded form although the exact expansion might be greater or less than this according to requirements. Because of the permeable nature of the sleeve 30, part of the slurry passes through the sleeve and contacts the formation 12.
  • the drill pipe 16 is reintroduced with a drill bit 40 attached and drilling recommences, drilling through the stinger 18 and cement inside the sleeve 30 to leave the remaining part of the sleeve 30' and a sheath of cement 36 around the borehole 10 in the zone 12 (see Figure 3).
  • This acts as an impermeable barrier between the borehole 10 and the formation 12 that can sustain the hydrostatic pressure of the drilling fluid and so avoid the fluid loss problem.
  • the presence of the cement cap on top of the sleeve and stinger assists in effective resumption of drilling and removal of the stinger.
  • the design of the cement slurry used in this operation will be determined according to the particular requirements of the cement sheath. It is preferred that the cement utilises an optimised particle size distribution for the solid components of the slurry such as is described in EP 0 621 247.
  • Fibre material is mixed with the base slurry to provide structure to the mass.
  • Such fibres can be metallic (see, for example, WO 99/58467) or polymeric (see, for example, PCT/EP02/07899).
  • Two suitable fibre materials and a proposed level of use in the cement slurries are given in Table 3 below:
  • the strength of the sleeve material and the cement are important parameters in designing an operation in accordance with the invention.
  • One of the most severe conditions lies in the case of the absence of support from the formation, for example when plugging caverns or highly unconsolidated formations.
  • r b and r a represent respectively the outside diameter and the inside diameter of the solid annulus.
  • a height of cement of 100 feet (30.48 m) might be appropriate.
  • the borehole fluid is taken to be water and with a water level at approximately 950 feet (291.39 m), and a total loss situation is assumed.
  • the differential pressure through the mesh is therefore 36 psi (0.25 x 10 6 N/m 2 ).
  • the cement, in the hardened state, must support in that part ofthe borehole a pressure of 1320 psi (9J x 10 6 N/m 2 ) if the borehole fluid is water (0.44 psi/foot (9.9 x 10 3 N/m 3 ) with a column height of 3000 feet (914 m)).
  • the strength ofthe mesh forming the sleeve is an important parameter. For example, assuming an 8 x 8 hard drawn, high carbon content steel cable mesh with a nominal yield strength of 300,000 psi (2068.4 x 10 6 N/m 2 ), having a mesh diameter of 0.71 mm, an opening of 2.47 mm (a 5 mm steel fibre is not capable of passing through such an opening), the average tangential force over the volume occupied by the mesh is approximately 250 times the differential pressure, that is to say approximately 9000 psi (62 x 10 6 N/m 2 ) (using equation 2 above) and an outside diameter ofthe mesh of 355.6 mm.
  • the average stress applied to the volume ofthe mesh is redistributed over the volume ofthe fibres.
  • This simplified approach suggests that the mesh selected is capable of supporting and withstanding approximately 7 times the differential pressure of 36 psi (0.25 x 10 6 N/m 2 ) before beginning to yield.
  • the actual tensile strength ofthe mesh itself will depend in fact on many other parameters such as the orientation ofthe steel cables, the material used, etc..
  • a carbon fibre mesh has a tensile strength of approximately 640,000 psi (4414 x 10 6 N/m 2 ). It appears at the present time that the mesh can provide appreciable support for the cement. It is also possible to envisage the use of a cement of lower density.
  • the mesh In order to increase the reliability ofthe system, the mesh must be sufficiently strong to support the cement.
  • the use of a cement with lower density or application to a shorter length ofthe stabilisation zone will reduce the strength requirement ofthe mesh during the placing ofthe cement.
  • the outside diameter can also be increased in order to reduce the tensile stress on the cement sheath.
  • the sleeve is preferably highly flexible in order to adapt to the dimensions and shape ofthe borehole whilst retaining good mechanical strength. Therefore carbon fibre, Kevlar or steel can be used.
  • An appropriate material has a high tensile strength under downhole conditions and is not excessively degraded by fluids present in the well, at least until a permanent casing is installed.
  • the structure ofthe mesh affords the required flexibility.
  • the method can be used to provide zonal isolation over a limited vertical extent. If, during drilling, a zone of higher pressure, or significant water or gas flow is encountered, which can disrupt the drilling process, it may be possible to set a cement sheath following under reaming (see Figure 4 above) across the zone in question and continue to drill, without the need to set intermediate casing with the consequent cost and reduction in diameter ofthe borehole. In such a case, a strong, tough reinforced cement might be used to withstand the high stresses of drilling, such as is disclosed in WO 99/58467.
  • the invention allows control ofthe axial extent ofthe application ofthe treatment fluid and control ofthe permeability ofthe treatment.
  • the object is typically to form a low permeability layer over a zone.
  • the invention can also be used to set a gravel pack, a relatively high permeability treatment. In this latter case, the axial extent of the sleeve might be relatively large compared to that used in a lost circulation problem.
  • the invention may also be used in place of a conventional ECP.
  • the sleeve is provided on the outside of casing rather than drill pipe or coiled tubing.
  • the casing might be slotted liner.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Mechanical Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

Un appareil pour stabiliser un puits de forage, comprend un tube de distribution (16) conçu pour envoyer un fluide de traitement dans une zone du puits de forage à stabiliser, tube comprenant une ouverture (22) permettant l'écoulement du fluide du tube dans la zone ; et un manchon souple extensible (30) fixé sur l'extérieur du tube (16) autour de l'ouverture (22), de sorte que le fluide s'écoulant du tuyau par l'ouverture s'écoule dans le manchon (30), lequel est constitué de matière perméable permettant à au moins une partie du fluide de la traverser et de venir en contact avec la zone du puits de forage.
PCT/EP2002/012719 2001-11-15 2002-11-13 Procede et appareil pour la stabilisation d'un puits de forage WO2003042494A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR01/14959 2001-11-15
FR0114959 2001-11-15

Publications (1)

Publication Number Publication Date
WO2003042494A1 true WO2003042494A1 (fr) 2003-05-22

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Family Applications (2)

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PCT/EP2002/012729 WO2003042495A1 (fr) 2001-11-15 2002-11-13 Appareil et procede de reglage de bouchon
PCT/EP2002/012719 WO2003042494A1 (fr) 2001-11-15 2002-11-13 Procede et appareil pour la stabilisation d'un puits de forage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/012729 WO2003042495A1 (fr) 2001-11-15 2002-11-13 Appareil et procede de reglage de bouchon

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Publication number Priority date Publication date Assignee Title
WO2004022500A2 (fr) * 2002-09-05 2004-03-18 Services Petroliers Schlumberger Coulis de cimentation de puits a base de fibres
WO2006063986A1 (fr) * 2004-12-15 2006-06-22 Shell Internationale Research Maatschappij B.V. Procede d'etancheification d'un espace annulaire dans un puits de forage
EP1840324A1 (fr) * 2006-03-31 2007-10-03 Services Pétroliers Schlumberger Méthode et appareil de traitement sélectif d'un tubage perforé
US20190249515A1 (en) * 2018-02-14 2019-08-15 Saudi Arabian Oil Company Curing a lost circulation zone in a wellbore
US11118417B1 (en) 2020-03-11 2021-09-14 Saudi Arabian Oil Company Lost circulation balloon
US11125046B2 (en) 2019-12-10 2021-09-21 Saudi Arabian Oil Company Deploying wellbore patch for mitigating lost circulation
WO2021252013A1 (fr) * 2020-06-10 2021-12-16 Saudi Arabian Oil Company Tissu de perte de circulation, procédé, et systèmes de déploiement
WO2021252012A1 (fr) * 2020-06-10 2021-12-16 Saudi Arabian Oil Company Tissu à perte de circulation, procédé et systèmes de déploiement
WO2021252011A1 (fr) * 2020-06-10 2021-12-16 Saudi Arabian Oil Company Tissu de perte de circulation, procédé et systèmes de déploiement
US11261678B2 (en) 2019-12-10 2022-03-01 Saudi Arabian Oil Company Deploying wellbore patch for mitigating lost circulation
US11286733B2 (en) 2020-03-26 2022-03-29 Saudi Arabian Oil Company Deploying material to limit losses of drilling fluid in a wellbore
US11454071B2 (en) 2020-03-26 2022-09-27 Saudi Arabian Oil Company Deploying material to limit losses of drilling fluid in a wellbore
US11624265B1 (en) 2021-11-12 2023-04-11 Saudi Arabian Oil Company Cutting pipes in wellbores using downhole autonomous jet cutting tools
US11643878B2 (en) 2020-03-26 2023-05-09 Saudi Arabian Oil Company Deploying material to limit losses of drilling fluid in a wellbore
US11668143B2 (en) 2019-12-10 2023-06-06 Saudi Arabian Oil Company Deploying wellbore patch for mitigating lost circulation
US11727555B2 (en) 2021-02-25 2023-08-15 Saudi Arabian Oil Company Rig power system efficiency optimization through image processing
US11867012B2 (en) 2021-12-06 2024-01-09 Saudi Arabian Oil Company Gauge cutter and sampler apparatus

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EP1757770A1 (fr) 2005-08-25 2007-02-28 Services Petroliers Schlumberger (Sps) Procédé et dispositif pour la pose d'un bouchon dans un trou de forage
EP2305450A1 (fr) * 2009-10-02 2011-04-06 Services Pétroliers Schlumberger Dispositifs et procédés pour la préparation de fibres recourbées
CN103221631A (zh) * 2010-09-15 2013-07-24 莱斯矿业发展控股有限公司 钻孔塞
GB2511068B (en) * 2013-02-21 2017-11-01 Alice Isaksen Inger Apparatus and method for setting a cementitious material plug
WO2019236059A1 (fr) * 2018-06-05 2019-12-12 Halliburton Energy Services, Inc. Procédé de production d'un bouchon de fond de trou stable au moyen de fluide magnétorhéologique et de ciment
AU2020366323B2 (en) * 2019-10-18 2024-05-30 J. Ray Mcdermott, S.A. A stinger for a pipe laying operation
US11867010B2 (en) 2021-11-29 2024-01-09 Saudi Arabian Oil Company Deploying a liner in a wellbore

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US3130787A (en) * 1960-09-12 1964-04-28 James C Mason Well bridging tool
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WO2004022500A3 (fr) * 2002-09-05 2004-06-24 Schlumberger Services Petrol Coulis de cimentation de puits a base de fibres
US7267173B2 (en) 2002-09-05 2007-09-11 Schlumberger Technology Corporation Well cementing slurries containing fibers
WO2004022500A2 (fr) * 2002-09-05 2004-03-18 Services Petroliers Schlumberger Coulis de cimentation de puits a base de fibres
EA009321B1 (ru) * 2004-12-15 2007-12-28 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Способ уплотнения кольцевого пространства в скважине
WO2006063986A1 (fr) * 2004-12-15 2006-06-22 Shell Internationale Research Maatschappij B.V. Procede d'etancheification d'un espace annulaire dans un puits de forage
GB2435176A (en) * 2004-12-15 2007-08-15 Shell Int Research Method of sealing an annular space in a wellbore
US8312921B2 (en) 2006-03-31 2012-11-20 Schlumberger Technology Corporation Method and apparatus for selective treatment of a perforated casing
WO2007112810A1 (fr) * 2006-03-31 2007-10-11 Services Petroliers Schlumberger Procédé et appareil de traitement sélectif d'un tubage perforé
US8474523B2 (en) 2006-03-31 2013-07-02 Schlumberger Technology Corporation Method and apparatus for treatment of a perforated casing
EP1840324A1 (fr) * 2006-03-31 2007-10-03 Services Pétroliers Schlumberger Méthode et appareil de traitement sélectif d'un tubage perforé
US11236581B2 (en) 2018-02-14 2022-02-01 Saudi Arabian Oil Company Curing a lost circulation zone in a wellbore
US20190249515A1 (en) * 2018-02-14 2019-08-15 Saudi Arabian Oil Company Curing a lost circulation zone in a wellbore
WO2019158985A1 (fr) * 2018-02-14 2019-08-22 Saudi Arabian Oil Company Durcissement d'une zone de perte de circulation dans un puits de forage
US10822916B2 (en) 2018-02-14 2020-11-03 Saudi Arabian Oil Company Curing a lost circulation zone in a wellbore
CN112004986A (zh) * 2018-02-14 2020-11-27 沙特阿拉伯石油公司 修复井眼中的循环漏失区
US11125046B2 (en) 2019-12-10 2021-09-21 Saudi Arabian Oil Company Deploying wellbore patch for mitigating lost circulation
US11668143B2 (en) 2019-12-10 2023-06-06 Saudi Arabian Oil Company Deploying wellbore patch for mitigating lost circulation
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