WO2021040532A1 - Outil de coupe de tubage et procédé pour faire fonctionner l'outil de coupe de tubage - manchon de piston actionné par pression actionnant une soupape à bille - Google Patents

Outil de coupe de tubage et procédé pour faire fonctionner l'outil de coupe de tubage - manchon de piston actionné par pression actionnant une soupape à bille Download PDF

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Publication number
WO2021040532A1
WO2021040532A1 PCT/NO2020/050216 NO2020050216W WO2021040532A1 WO 2021040532 A1 WO2021040532 A1 WO 2021040532A1 NO 2020050216 W NO2020050216 W NO 2020050216W WO 2021040532 A1 WO2021040532 A1 WO 2021040532A1
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WO
WIPO (PCT)
Prior art keywords
piston sleeve
tool
pressure
casing
ball valve
Prior art date
Application number
PCT/NO2020/050216
Other languages
English (en)
Inventor
Andreas Fliss
Trond SKJEIE
Original Assignee
Archer Oiltools 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 Archer Oiltools As filed Critical Archer Oiltools As
Priority to GB2204331.9A priority Critical patent/GB2602754B/en
Publication of WO2021040532A1 publication Critical patent/WO2021040532A1/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
    • 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
    • E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
    • E21B29/005—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe with a radially-expansible cutter rotating inside the pipe, e.g. for cutting an annular window
    • 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
    • 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

  • Applicant Archer Oiltools AS, Sandnes, Norway.
  • the present invention relates to a casing cutter employed in the petroleum well industry.
  • Petroleum wells are provided with several casing pipes of progressively reduced diameter and increasing length, each casing extending from the surface and down to a casing shoe at their lower end. Casing pipes not extending from the surface are usually called liners.
  • a well is generally provided with a first casing pipe of larger diameter, say 18 1/2", extending to a first borehole depth where it is cemented to the surrounding rocks, and then the well is drilled further with a second diameter which is less than the first drilled section, and provided with a casing pipe of lesser diameter than the first one, say 14 " or 13 3/8 ", extending generally concentrically from the surface and past the first casing shoe and to near the bottom of the smaller diameter borehole, where it is cemented in its annulus to the smaller borehole wall.
  • the process may continue by drilling a further extension of a smaller diameter borehole section with an even smaller diameter casing pipe, say 103/4 " or 95/8 ", lining the third borehole section, also this third casing pipe extending from the surface.
  • an even smaller diameter casing pipe say 103/4 " or 95/8 "
  • This third casing one may drill a production section through a reservoir rock and provide it with a so-called production liner of diameter 7 5/8 " which is hung up in a so-called liner hanger fixed in the lower end of the third casing.
  • This production liner is perforated at the desired production zones, and provided with a completion with a petroleum production pipe, and the production pipe is extended to the surface, through a wellhead and provided with blow-out preventer valves, and extends via a production riser to production and control valves.
  • Casings are usually cut using a rotating casing cutter tool operated at the lower end of a rotating drill pipe string. We may wish to cement the remaining casing below the severed section after the cutter tool has cut through the casing wall, and such cementing of the remaining casing below the cut is usually done in a separate later ran, after the cutting tool is removed. Tripping out a cutting tool, running in a cementing stinger, cementing, and circulating out excess cement and tripping out the cementing stinger requires several hours or days of expensive rig time.
  • One casing cutting tool is described in McGarian WO2019016523, wherein is described a cylindrical main body with a through bore is provided with a return spring- loaded piston pipe which is arranged for moving longitudinally within the main body when blocked by a drop ball in the main bore, and provided with an array of circular grooves forming cogs which engage cogs of pivoting cutter arms which extend when the piston pipe moves.
  • the ball-blocked piston moves due to increased pressure in the drilling mud.
  • the drop ball blocks the main bore and requires drilling fluid or cement to pass only via bypass apertures back to the main bore of the moving piston. So if cementing of a plug in the casing bore shall be done, it must be done ahead of activating the cutter tool with the ball.
  • the dropping of the ball requires a separate ball drop apparatus with a fluid bypass and control valves is required, the ball drop apparatus integrated in the drill pipe string extending above deck.
  • the present invention requires no such ball drop apparatus and takes less space above the work deck.
  • GB2559353 A Ardyne Technologies Ltd. describes a cutter tool wherein a casing cutter is activated by pumping a ball, a sponge ball, through the toolstring and landing the sponge ball in a basket-like ball- catcher forming a bottom in the lower end of a piston sleeve.
  • the ball then covers the entire central bore and pressure may be built up through the drill pipe string to translate a sleeve to open bypass channels internally. Dropping one more ball will block the central bore once more and allow pressure buildup which will displace the piston sleeve which is linked to rotate and extend cutter arms.
  • a significant disadvantage of the McGarian and Ardyne cutter tools is that in order to land a ball in the tool in order to activate it, one must have circulation. If circulation is lost, it is not possible to circulate in a drop ball, thus not possible to activate the cutter tool. With the present invention it is possible to activate the cutter tool despite loss of circulation, as long as we are able to pressurize the drill pipe string.
  • the tool described in the cited document is arranged to divert part of the drilling fluid to a bypass from the main bore and out to the drill string annulus, in order to improve the carrying capacity of debris in a widened section about the drill pipe string, while allowing drilling mud to pass also downwardly through the main bore to the drill bit.
  • more drilling mud may be circulated than without the circulation sub, and there is a reduced risk of loss of carrying capacity for the debris, a reduced risk of getting stuck, and a reduced risk of inadvertently exceeding the rock's pressure capacity.
  • Flash cementing It may be possible to circulate in cement through a cutter tool If the cement is pumped through apertures in bypass channels past an otherwise piston-blocking ball in the knife-actuating piston sleeve. However, as such apertures in bypass channels inadvertently are of much smaller diameter than the full bore of the piston sleeve, there is a risk of local heating and flash setting of cement in such narrow throats as bypass channels, which would permanently prevent from cementing through the tool.
  • Fig. 1 illustrates an embodiment of the invention wherein a cutter tool provided with cutter arms with casing cutting knives are folded in into recesses of a rotatable cutter tool body.
  • a motor-controlled delimiter (14) controls the stroke of a piston sleeve (14) which upon abutment actuates a ball valve (6) in the main bore of the piston sleeve.
  • the ball valve (6) is open for passage of drilling fluid to pass axially.
  • control module deactive mode (sleeve inu. pos.), controls delimiter (14) which controls stroke length which actuates ball valve operation.
  • Fig. 2 illustrates the same embodiment of the invention wherein the pressure has been set in the drilling fluid from topsides, while the control module has activated the delimiter (14) to a retracted position by using a motor (11), thus allowing a pressure differential between the top and the bottom of the piston sleeve (11) to stroke so as for shutting the ball valve in the actuation piston sleeve, and the piston sleeve has moved to force out the cutter knife arms to their extended positions.
  • control module controls motor 11 to move delimiter 14 to allow sleeve stroke to shut ball valve to "extended knives” mode (with extended knives and sleeve in lower position)
  • Fig. 3 illustrates time series of pressure of the drilling fluid in the main bore of the apparatus of the present invention, rotational speed, and a logical parameter called "operational mode" for the tool of the invention.
  • the logical parameter may comprise three modes:
  • Fig. 4 illustrates an embodiment of the cutter tool arranged on a drill pipe string in a cased well, when the cutter tool is in the "listening mode” or the “ready to extend” mode.
  • control module is first in deactive mode "listen” mode.
  • control module commands motor 11 to control delimiter (14) to full stroke length of piston sleeve (4), increased pressure moves piston to full stroke to shut ball valve (3): "ready to extend” mode. (3): cutter knife arms in retracted pos.
  • Fig. 5 illustrates an embodiment of the cutter tool similar to Fig. 4, with the cutter tool set in the "extended knives” mode with the knives extended and forced against the casing inner wall utilizing the piston force generated by the drill pipe supplied fluid pressure, and rotatingly cutting away material from the casing wall. Swarf resulting from the cutting, and heat generated by the cutting and friction is transported away by the circulating fluid.
  • FIG. 6 is an illustration of a subsequent situation wherein a cut has been made at an above level in the well in addition to the present cut, and the ball valve has been opened, and wash fluid is flushed through the central bore of the tool to be released near the cut. This may wash out and force out annular baryte from behind the casing, aiding to free the casing and enabling it to yield to an axial force from a so-called spear tool to retrieve the severed casing section from the well.
  • the invention is a drill pipe string (10) - conveyed casing cutter tool.
  • the cutter tool comprises a cylindrical main body (0) provided with casing cutter knife arms (3).
  • the knife arms (3) are arranged rotatable on pivot axles (31) and provided with rotating cogs (32) in a first (inner) end of said knife arms (3). In their passive state, said knife arms (3) are pivotally rotated back and thus retracted into recesses (01) in said main body (0) by a return spring (2).
  • a piston sleeve (4) which is spring loaded by the return spring (2).
  • the piston sleeve has a central bore (40).
  • the piston sleeve (4) is axially arranged in said cylindrical main body (0).
  • the piston sleeve (4) is provided with seals (42) in two different bore diameters in the main body (0), the larger bore on top.
  • the piston sleeve may be moved if an axially directed force generated by a force differential between its top and bottom end overcomes the spring load.
  • the force differential AF is proportional to the difference between the axial force on the top of the piston which is
  • R 4 o is the radius of the piston sleeve bore (40)
  • R is the radius of the top of the piston
  • the rotating cogs (32) of the knife arms are engaged with a corresponding linear cog array (41) on said piston sleeve (4) and arranged for extending said knife arms (0) with a cutting edge (33) out from said recess (01).
  • a novel feature of the invention is that said piston sleeve (4) is provided with a ball valve (6), and further that said ball valve (6) is actuated by the piston sleeve (4) being subject to the differential pressure and thus stroked in the axial direction.
  • a motor (11) controlled by a control module (1) controls delimiter (14) to retract to allow the piston sleeve (4) to stroke to close the ball valve (6).
  • An advantage of setting the pressure through the drill pipe string is that the high pressure provided by mud pumps at the surface is high enough both to move the piston sleeve (4) and further to actuate closure of the ball valve (6) and increase the force to engage the cutting edges (33) with high enough force to sever the casing efficiently.
  • Such high forces required to extend the cutter arms would otherwise be generated through the use of a downhole motor that would require much energy and high torsional moment from such a motor, for which there is insufficient space.
  • the present invention is advantageous over McGarian' casing cutter which utilizes a separately, through the drill-pipe dropped ball to actuate a piston sleeve. Using that casing cutter, the operator cannot undo the presence of the ball in the main bore. Using the McGarian casing cutter requires any cementing to be done before the ball is dropped, and prevents cementing through the tool after the cutting process is finished. According to the present invention the main bore may be re-opened in its central bore for pumping cement through the main bore, after the cutting process has been conducted.
  • An advantage of the tool is that having a ball valve with an aperture of generally the same diameter as the bore of the piston sleeve, we may have a high circulation rate both before the cutting, and also after the cutting tool has severed the casing and when cleaning circulation is required for getting swarf and debris out of the well after cutting. High circulation cleaning through the main bore is not possible with a solid ball in the main bore according to the background art, except possibly allowing a small lateral flow through the tool's wall.
  • Another advantage of the tool with a full bore ball valve in the piston sleeve is that when cementing through the tool, there are no local narrow throats for the cement to pass, thus the risk of flash setting of the cement is reduced, and cementing may be conducted after cutting.
  • An advantage of the invention is the possibility to do more than one cut in one ran in the well. Further advantageously, the invention enables us to reduce the pressure and open up the ball valve, disable the cutters by setting the delimiter (14) to prevent stroke of the piston sleeve (14), increase pressure and fluid flow to flush to clean out swarf and debris after one cut before displacing the tool along the well to make another cut in the same run. This use of the ball valve enables us to flush with high cleaning fluid pressure and volume to do a full cleanup before the next cut.
  • the cutting tool of the invention has, due to utilizing the pump pressure from the surface, and by utilizing the piston sleeve translation - actuated ball valve in the main bore of the piston sleeve, sufficient force to, when the ball valve is rotated to further increase the pressure and force out the casing cutter knife arms with a sufficient radial force component to force the cutting edge towards the casing with a sufficient force to sever the casing efficiently.
  • the casing When the casing is severed, it may be retrieved to the surface using a so-called casing spear.
  • the time it takes to activate the tool according to the invention is no longer dependent on any drop ball travel time while being circulated in.
  • the activation time according to the invention is short, it almost only requires the time it takes to send a signal (13) to the controller (1) to activate the stroke delimiter (14) to allow displacement of the piston sleeve to eventually shut the ball valve (6).
  • the activation time according to an embodiment of the invention implies the predefined time of nearconstant rotation rate of e.g. 50 or 60 RPM +/- 1 RPM during e.g. 120 seconds, to activate the tool to enter "ready to extend [the knives]" mode.
  • bypass flow ports (5, 51) of the embodiment of the present invention are small compared to the main bore but sufficiently large to create a lubricating and cooling flow for the cutting process using our knives, but our bypass ports are not intended to produce a bypass flow for lifting out the large volume of debris associated with drilling, as we shall only transport swarf of relatively modest volume away from the cut in the casing, and cool and lubricate the knives.
  • an electronically controlled stroke length pressure-displaced piston which abuts at its ultimate stroke length (if allowed by the electronically controlled motor- activated delimiters), and eventually gets its ball valve closed, and a similar function for closing the ball valve of the present invention.
  • Another advantage of the present invention is the fact that when we pull the cutting tool out of the well, the drilling fluid is continuously allowed to drain via the full-bore open ball valve of the cutter tool, avoiding pulling the drill pipe string wet out of hole. This avoids unnecessary pouring of drilling fluid from the broken out drill pipe stands to the drilling deck, and reduces the loss of drilling fluid, and cleaner and better working conditions on deck.
  • Ball catchers require more length of the tool string and is undesirable. Ball catchers have limited capacity and sets thus a limit to the number of cuts in one run. With the invention allowing the ball valve to remain open during tripping or RIH, there occurs no swab of well bore when POOH because the drill pipe string fluid may be pumped in axially while the tool is retrieved upwardly.
  • said control module (1) is provided with a first sensor unit (12) arranged for detecting an activation signal (13) from surface.
  • the activation signal may comprise one or more of an acceleration signal and a pressure signal, please see Fig. 3. The details of the operation are given below:
  • said control module (1) is provided with an accelerometer sensor (122) which is at least arranged for measuring rotation related accelerations.
  • said activation signal (13) comprises an acceleration signal (132) generated upon sensing rotation of the accelerometer sensor with the tool in the Earth's gravity field, e.g. such as a stable predefined rotation rate of e.g. 50 or 60 RPM over a predefined period of time of e.g. 60 or 120 seconds, e.g.
  • This stable rotation signal may be combined with a pressure signal, the dashed P line in Fig. 3, to change the operating mode from "listening mode” to "ready to extend [knife arms]” mode, please also see below.
  • said first sensor unit (12) comprises a pressure sensor (121) and said activation signal (13) comprises a pressure signal (131) sent from surface and measured due to the pressure in the drill pipe string, the pressure generated e.g. by signalling using mud pumps.
  • the pressure signal (131) to contribute to activate the cutter tool may require simply that the pressure is increased above an initial minimum knife activation pressure threshold (PL).
  • said control module (1) When said control module (1) has registered the operation mode as "ready to extend [knife arms]", it may command said motor (11) to enable the delimiter (14) to release from its blocking position which prevents the piston sleeve (4) to stroke. Thus the increased pressure will move the piston sleeve (4) and a link mechanism may upon abutting a ball rotation mechanism rotate and close said ball valve (6) to intermittently block said central bore (40) of the tool, please see Fig. 4.
  • the operator When "ready to extend” mode with the ball valve closed, the operator increases the drill pipe string internal pressure P > PL to overcome spring initial force, to translate the piston sleeve axially and eventually extend the knife arms to the casing wall.
  • a pressure or force or a proximity sensor may sense when P > Pmax when there is mechanical resistance from the casing wall, and the control module changes to "extended knives” mode, please see Figs. 3 and 5.
  • the tool is arranged for being set under pressure in said central bore (40), and when said piston sleeve (4) is subject to a differential pressure between its top and bottom, to close said ball valve (6) as described above,, and the driller increases the pump pressure to above said predefined pressure threshold (PL) required to overcome the spring force of said return spring (2),
  • control module (1) pressure sensor (121) registers a pressure above said pressure threshold (PL)
  • control module (1) registers the operation mode as "extended knives” mode, please see Fig. 3.
  • the pressure used is according to the discretion of the operator in order to force the cutter knives (3) cutting edges towards the inner casing wall while rotating at a desired cutting speed.
  • the cutter knives will make a circular groove by cutting away material from the casing wall and produce swarf and heat, see Fig. 5, and eventually sever the casing pipe completely at the selected level. Swarf produced by the knives may be flushed out with circulating bypassed drilling mud, or flushed out using axial flow after the ball valve has been opened, please see below.
  • said control module (1) registers the pressure below said pressure threshold (PL) while in "ready to extend” mode, the reduced pressure on the piston sleeve will eventually shift it back to open said ball valve (6) and allow flow through said central bore (40), said control module (1) commands said motor (11) to disable the delimiter (14) thus disallowing displacement of the piston sleeve thus denying closure of the ball valve (6), and the control module may change the operation mode back to "listen mode".
  • the tool may now be conveyed further into the casing to start all over to make another cut, or being kept in the same position to flush out swarf and possibly flush out the casing annulus, or be retracted for a subsequent operation to start, such as engaging a spear in an upper part of the severed-off casing section in order to pull out the severed-off casing section from the well.
  • control module (1) registers a pressure below said pressure threshold (PL) while in “ready to extend” mode, for more than a second predefined duration, e.g. 120 s, please see Fig. 3. Said control module (1) then commands said motor (11) to disable said delimiter (14) thus not enabling closure of said ball valve (6).
  • PL pressure threshold
  • the tool is arranged to flush wash fluid such as drilling fluid through said ball valve (6) in said central bore (40) for one or more of:
  • Lateral flush ports may, according to an embodiment of the invention, be activated to divert drilling mud under high pressure out to the tool annulus to near the cutting knives when working, please see Fig. 5.
  • the knife extension mechanism may be kept clean, the knives are cooled and lubricated.
  • said piston sleeve (4) is provided with a lateral passage (51) arranged for aligning with a bypass port (5) in the main body (0) when said piston sleeve (4) is translated by the drill pipe string differential pressure into an actuating position and extending said knife arms (3), in order to divert drilling fluid out to the tool's annulus when cutting, and for closing said bypass flow ports (5) when said piston sleeve (4) is retracted from said actuating position, please see Figs. 1 and 2. Running procedure
  • the procedure for running the tool is in an embodiment as follows: i) Make up the tool at surface and perform a surface test of functionality. ii) Run-in-hole of the tool on a drill pipe string to the target cutting depth. iii) Apply the activation signal rotation rate for a predetermined time, to initiate and activate the control module (1) with the predefined input parameters (pressure above predefined level, rotation at predefined speed and duration, or string movement, etc.). iv) Apply rotation to the drill pipe string. v) Apply flow and pressure via the drill pipe string and inside the tool / borehole assembly BHA. vi) Build up pressure to shift down the activation sleeve as follows: a.
  • the piston sleeve (2) is moved axially by the pressure, the piston sleeve abuts a closing mechanism which closes the ball valve (6). b.
  • the moving piston sleeve (2) activates and extends the knives to the casing inner wall.
  • the piston sleeve (2) also compresses the return spring when moved.
  • the piston sleeve (2) lateral apertures (51) also aligns with flow ports (5) between the level of the knives and ball valve. vii) Let the rotating tool cut the casing until casing is completely severed around the entire circumference. The deviated fluid from flow ports (51) will cool and lubricate the knives. viii) Reduce the flow and pressure inside the borehole assembly.
  • a ball valve (6) arranged for closing or opening the central bore (40) of the piston sleeve (4) may be replaced by a flapper valve or other valve mechanism closing or opening the central bore (40), actuated by a mechanism similar to the mechanism of the present invention.

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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)
  • Shearing Machines (AREA)
  • Earth Drilling (AREA)
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Abstract

L'invention concerne un outil de coupe de tubage transporté sur un train de tiges de forage (10), comprenant - un corps principal cylindrique (0) pourvu de bras de couteau de coupe de tubage (3) rotatifs sur des axes de pivotement (31) et pourvus de pignons tournants (32) dans une première extrémité desdits bras de couteau (3), lesdits bras de couteau (3) étant rétractables dans des évidements (01) ménagés dans ledit corps principal (0), - un manchon de piston (4) chargé sur un ressort (2) comportant un alésage central (40) disposé axialement dans le corps principal (0), - lesdits pignons (32) étant en prise avec un réseau de dents linéaires (41) correspondant sur ledit manchon de piston (4) et agencés pour étendre lesdits bras de couteau (0) avec un bord de coupe (33) hors dudit évidement (01). - Le manchon de piston (4) est pourvue d'une soupape à bille (6) ,- ladite soupape à bille (6) est actionnée par une translation d'un manchon de piston (4) commandé par un module de commande (1) de manière à obturer ledit alésage central (40), - de manière à ce que, lorsque la pression est réglée à partir de la surface à travers ledit train de tiges de forage (10) et ladite soupape à bille est ainsi fermée, ledit piston se déplace et actionne lesdits bras de couteau (3) à une position de coupe, pour permettre la coupe en rotation d'une paroi interne d'un tubage lorsque ledit train de tiges de forage (10) est mis en rotation.
PCT/NO2020/050216 2019-08-27 2020-08-27 Outil de coupe de tubage et procédé pour faire fonctionner l'outil de coupe de tubage - manchon de piston actionné par pression actionnant une soupape à bille WO2021040532A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2204331.9A GB2602754B (en) 2019-08-27 2020-08-27 Casing cutter tool and method for operating the casing cutter - pressure actuated piston sleeve actuating ball valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20191033 2019-08-27
NO20191033A NO346087B1 (en) 2019-08-27 2019-08-27 Casing cutter tool and method for operating the casing cutter - pressure actuated piston sleeve actuating ball valve

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Publication Number Publication Date
WO2021040532A1 true WO2021040532A1 (fr) 2021-03-04

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GB (1) GB2602754B (fr)
NO (1) NO346087B1 (fr)
WO (1) WO2021040532A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
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CN113513268A (zh) * 2021-04-29 2021-10-19 中煤科工集团重庆研究院有限公司 一种投球式定点扩孔装置
WO2023018712A1 (fr) * 2021-08-10 2023-02-16 Baker Hughes Oilfield Operations Llc Système et procédé pour détecter une position d'une lame de coupe pour un coupe-tube

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO346525B1 (en) * 2021-03-02 2022-09-19 Archer Oiltools As Ball valve tool

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WO1999031351A1 (fr) * 1997-12-12 1999-06-24 Schlumberger Technology Corporation Systeme d'isolement d'un puits
US20100089583A1 (en) * 2008-05-05 2010-04-15 Wei Jake Xu Extendable cutting tools for use in a wellbore
WO2011153098A1 (fr) * 2010-06-01 2011-12-08 Smith International, Inc. Outil de déviation de fluide pour suspension de colonne perdue et procédés associés
GB2543847A (en) * 2015-11-02 2017-05-03 Schlumberger Technology Bv Rotary Milling Tool
GB2544136A (en) 2015-11-06 2017-05-10 Cutting & Wear Resistant Dev Ltd Circulation subassembly
CN107218007A (zh) * 2017-08-02 2017-09-29 西南石油大学 齿轮齿条传动实现连续切割不同直径套管的可变径水力割刀
GB2559353A (en) 2017-02-01 2018-08-08 Ardyne Tech Limited Improvements in or relating to well abandonment and slot recovery
WO2019016523A1 (fr) 2017-07-19 2019-01-24 Bruce Mcgarian Outil et procédé de coupe du tubage d'un trou de forage

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999031351A1 (fr) * 1997-12-12 1999-06-24 Schlumberger Technology Corporation Systeme d'isolement d'un puits
US20100089583A1 (en) * 2008-05-05 2010-04-15 Wei Jake Xu Extendable cutting tools for use in a wellbore
WO2011153098A1 (fr) * 2010-06-01 2011-12-08 Smith International, Inc. Outil de déviation de fluide pour suspension de colonne perdue et procédés associés
GB2543847A (en) * 2015-11-02 2017-05-03 Schlumberger Technology Bv Rotary Milling Tool
GB2544136A (en) 2015-11-06 2017-05-10 Cutting & Wear Resistant Dev Ltd Circulation subassembly
GB2559353A (en) 2017-02-01 2018-08-08 Ardyne Tech Limited Improvements in or relating to well abandonment and slot recovery
WO2019016523A1 (fr) 2017-07-19 2019-01-24 Bruce Mcgarian Outil et procédé de coupe du tubage d'un trou de forage
CN107218007A (zh) * 2017-08-02 2017-09-29 西南石油大学 齿轮齿条传动实现连续切割不同直径套管的可变径水力割刀

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* Cited by examiner, † Cited by third party
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CN113513268A (zh) * 2021-04-29 2021-10-19 中煤科工集团重庆研究院有限公司 一种投球式定点扩孔装置
WO2023018712A1 (fr) * 2021-08-10 2023-02-16 Baker Hughes Oilfield Operations Llc Système et procédé pour détecter une position d'une lame de coupe pour un coupe-tube

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NO346087B1 (en) 2022-02-07

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