EP0411260B1 - Equipment for a drill string with a side entry sub and emergency release - Google Patents

Equipment for a drill string with a side entry sub and emergency release Download PDF

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Publication number
EP0411260B1
EP0411260B1 EP90109715A EP90109715A EP0411260B1 EP 0411260 B1 EP0411260 B1 EP 0411260B1 EP 90109715 A EP90109715 A EP 90109715A EP 90109715 A EP90109715 A EP 90109715A EP 0411260 B1 EP0411260 B1 EP 0411260B1
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EP
European Patent Office
Prior art keywords
anchoring member
cable
passage
safety
section
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.)
Expired - Lifetime
Application number
EP90109715A
Other languages
German (de)
French (fr)
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EP0411260A3 (en
EP0411260A2 (en
Inventor
Christian Wittrisch
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IFP Energies Nouvelles IFPEN
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IFP Energies Nouvelles IFPEN
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Filing date
Publication date
Priority claimed from FR8706542A external-priority patent/FR2614932B1/en
Priority claimed from FR8706543A external-priority patent/FR2614933B1/en
Application filed by IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Publication of EP0411260A2 publication Critical patent/EP0411260A2/en
Publication of EP0411260A3 publication Critical patent/EP0411260A3/en
Application granted granted Critical
Publication of EP0411260B1 publication Critical patent/EP0411260B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/06—Releasing-joints, e.g. safety joints
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/023—Arrangements for connecting cables or wirelines to downhole devices
    • E21B17/025—Side entry subs
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/01—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for anchoring the tools or the like
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/14—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for displacing a cable or cable-operated tool, e.g. for logging or perforating operations in deviated wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/068—Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells
    • E21B33/072—Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells for cable-operated tools

Definitions

  • the present application is a division of the initial application EP-A-0.294.252.
  • the present invention relates to equipment for a drill string, such as a drill string, comprising a side window connection for the passage of a cable from the inside to the outside of the rods, with hydraulic sealing around the cable.
  • the body can be adapted to move the clamping element during the translation of the body.
  • the means for immobilizing the anchoring member and the cable can be released by remote control.
  • the release of the immobilization means may be obtained under the action of a traction exerted by the cable from the surface.
  • the immobilization means may include a shearable pin beyond a certain stress threshold.
  • the surface of the anchoring element may be crenellated and include at least one notch and the stop may be adapted to penetrate into the notch when the translation is carried out.
  • the reference 1 represents the connection with side window screwed by its upper 1a and lower 1b ends respectively to an upper element 2 and a lower element 3 of the drill string.
  • This connector has a side window 5 allowing the passage of an electric cable 4 from the outside to the inside of the rods, by relying on two guide rollers 6a and 6b.
  • This cable is, for example, of a type used for logs or interventions carried out according to the technique described in patent FR-A-2,501,777 and its aforementioned additions.
  • the upper end 1a may include a plug allowing the upper element 2 to be closed.
  • the member 8 seals around the cable 4 between a zone 9 inside the fitting 1 and the outside of the fitting.
  • the inner zone 9 opens into the lower part of the drill string, through the lower element 3.
  • This inner zone 9 is in communication with a lateral opening 10 located in the connector and which can be connected to an installation of pumping adapted in particular to produce a circulation of fluid with a view to displacing tools and measuring or intervention instruments connected or not connected to the cable 4.
  • One of these instruments may be a load bar comprising an electrical connector adapted to cooperate with another complementary electrical connector.
  • the member 8 also ensures the anchoring of the cable 4 to said connector 1.
  • the means of the connector 1 specifically intended for sealing and carried by the member 8 comprise two complementary parts (8a, 8b) assembled by screws 7 and adapted to be placed around the cable (4) and to be watertight at the passage of fluid from the inside to the outside and vice versa.
  • the interior of these two parts is bored so as to be able to place deformable rings 16 and a compression ring 17 therein and to keep these rings locked in a direction. All these rings, or some of them only, are split so that they can be put in place once the cable passes through the fitting 1.
  • a nut 18, comprising a lateral opening for its introduction around the cable 4 and on the member 8, makes it possible to compress the deformable washers 16 so as to produce a seal.
  • the assembly suitable for producing the internal sealing means and comprising the two complementary parts 8a, 8b, the deformable washers 16, the compression washer 17 with half-moon and, the nut 18 corresponds to the cable gland generally retained for this usage.
  • the external sealing means comprise the two complementary parts or body 8a, 8b cooperating with one or more external seals 14, such as an O-ring, and the internal wall of fitting 1.
  • the anchoring member specifically intended for immobilizing the cable 4 relative to the connector 1 and carried by the member 8 comprises the two complementary parts or body 8a, 8b, and a clamping element 8c actuated by clamping screws 12.
  • One 8b of the complementary parts or body 8a, 8b has a flared recess opening onto the cable 4 and in which the clamping element 8c is positioned which, under the action of the stud screws 12, prevents the cable 4 from move.
  • These screws 12 include sealing means preventing any passage of fluid between their body and the holes in which they are housed.
  • the sealing and anchoring member 8 further comprises a lug 19 cooperating with a groove 20 located in the connector 1, both adapted to allow relative movement when the cable is detached.
  • the member 8 is immobilized relative to the connector 1 by a shearable pin 11 which allows, by its shearing, to release the member 8 in translation when a traction is exerted on the cable 4.
  • the equipment is implemented as follows, while the side entry fitting is accessible, for example when it is close to the surface.
  • the clamping screws act as adjustable stops, but fixed stops could also be used.
  • the cable can be clamped by wedging the anchoring member, or more precisely the clamping member, inside the connector, by axial pressure on said member. , or by self-pinching the cable once the jamming has started.
  • the cable runs freely inside the member 8 and the connector 1, until the cable can be completely removed and thus be able to perform operations, such as unlocking the column, which the presence of the cable would prevent.
  • the clearance surfaces 13 shown in FIGS. 1A and 1B have a slope whose inclination is adapted to increase the clearance between the anchoring element 8c and the pins of the screws 12 when the member 8 follows the movement of the cable printed by a pull on it.
  • the angle alpha between the oriented axes of the translation OT and of the inclined part is an acute angle.
  • the top of this acute angle is oriented towards the bottom of the well, that is to say in the opposite direction to that in which the traction intended to release the cable will be exerted.
  • FIG. 3 represents a second embodiment of the clamping element, in which the release surfaces comprise a part without inclination 13a on which the stud of one of the screws 12 is supported, followed by a part 13b , such that the clearance between the stud and the anchoring element 8c increases suddenly.
  • the surface therefore assumes a notched shape 13a, 13b, where the vertices 13a correspond to the clamping positions of the clamping element 8c, and where the notches 13b correspond to the cable release positions.
  • the inclined release surfaces allow both the release of the cable after a slight displacement of the member 8 and greater precision in the tensile threshold to be exerted to shear the pin 11.
  • the axes of the screws 12 can be substantially perpendicular to the clearance surfaces 13.
  • the surface area of the studs in contact with the inclined parts of the clearance surface 13, or in contact with the parts 13a according to the second embodiment, will be as large as possible.
  • This reduction in diameter allows a cable to run along the upper elements of the drill string to the upper end of the well, especially when the lower and upper elements of the drill string are offset.
  • An advantageous offset can be obtained when the lower and upper elements have a substantially common generator.
  • Hoods can be used to apply the cable to these upper parts of the drill string.

Description

La présente demande est une division de la demande initiale EP-A-0.294.252.The present application is a division of the initial application EP-A-0.294.252.

La présente invention concerne un équipement pour train de tiges, tel qu'un train de tiges de forage, comprenant un raccord à fenêtre latérale pour le passage d'un câble de l'intérieur vers l'extérieur des tiges, avec étanchéité hydraulique autour du câble.The present invention relates to equipment for a drill string, such as a drill string, comprising a side window connection for the passage of a cable from the inside to the outside of the rods, with hydraulic sealing around the cable.

Les raccords à fenêtre latérale (souvent désignés par "Side entry subs" dans l'industrie pétrolière) sont bien connus des spécialistes des forages pétroliers. Un tel dispositif est, par exemple, décrit dans le brevet britannique 2.135.719.Side window fittings (often referred to as "Side entry subs" in the petroleum industry) are well known to petroleum drilling specialists. Such a device is, for example, described in British patent 2,135,719.

On connaît le document FR-A-2.502.236 qui concerne un raccord à fenêtre latérale selon la première partie de la revendication 1, mais ce document ne décrit pas d'ancrage du câble dans le raccord qui permet le désancrage par translation d'un corps. la présente invention vise à indiquer une solution technique permettant le désancrage du câble.Document FR-A-2.502.236 is known which relates to a side window connector according to the first part of claim 1, but this document does not describe anchoring of the cable in the connector which allows the disengagement by translation of a body. the present invention aims to indicate a technical solution allowing the anchoring of the cable.

Ce but est atteint par les caractéristiques techniques de la partie caractérisante de la revendication 1.This object is achieved by the technical characteristics of the characterizing part of claim 1.

Le corps pourra être adapté à déplacer l'élément de serrage au cours de la translation du corps.The body can be adapted to move the clamping element during the translation of the body.

La libération des moyens d'immobilisation de l'organe d'ancrage et du câble pourra être réalisée par une commande à distance.The means for immobilizing the anchoring member and the cable can be released by remote control.

La libération des moyens d'immobilisation pourra être obtenue sous l'action d'une traction exercée par le câble depuis la surface.The release of the immobilization means may be obtained under the action of a traction exerted by the cable from the surface.

Les moyens d'immobilisation pourront comporter une goupille cisaillable au-delà d'un certain seuil de contrainte.The immobilization means may include a shearable pin beyond a certain stress threshold.

La surface de l'élément d'ancrage pourra être crénelée et comporter au moins une échancrure et la butée pourra être adaptée à pénétrer dans l'échancrure lorsque l'on effectuera la translation.The surface of the anchoring element may be crenellated and include at least one notch and the stop may be adapted to penetrate into the notch when the translation is carried out.

L'organe d'ancrage pourra être adapté à une introduction latérale du câble dans le passage.

  • les figures 1A et 1B représentent des coupes sensiblement adjacentes d'un raccord selon l'invention, avec en détail les moyens d'étanchéité et l'organe d'ancrage,
  • la figure 2 est une section de détail de l'organe d'ancrage, et
  • la figure 3 est une section d'un deuxième mode de réalisation de l'organe d'ancrage.
The anchoring member can be adapted to a lateral introduction of the cable into the passage.
  • FIGS. 1A and 1B represent substantially adjacent sections of a connector according to the invention, with details of the sealing means and the anchoring member,
  • FIG. 2 is a detailed section of the anchoring member, and
  • Figure 3 is a section of a second embodiment of the anchor member.

La référence 1 représente le raccord à fenêtre latérale vissé par ses extrémités supérieure 1a et inférieure 1b respectivement à un élément supérieur 2 et un élément inférieur 3 du train de tiges.The reference 1 represents the connection with side window screwed by its upper 1a and lower 1b ends respectively to an upper element 2 and a lower element 3 of the drill string.

Ce raccord comporte une fenêtre latérale 5 permettant le passage d'un câble électrique 4 de l'extérieur vers l'intérieur des tiges, en s'appuyant sur deux galets de guidage 6a et 6b. Ce câble est, par exemple, d'un type utilisé pour des diagraphies ou interventions réalisées selon la technique décrite dans le brevet FR-A-2.501.777 et ses additions précitées.This connector has a side window 5 allowing the passage of an electric cable 4 from the outside to the inside of the rods, by relying on two guide rollers 6a and 6b. This cable is, for example, of a type used for logs or interventions carried out according to the technique described in patent FR-A-2,501,777 and its aforementioned additions.

L'extrémité supérieure 1a peut comporter un bouchon permettant l'obturation de l'élément supérieur 2.The upper end 1a may include a plug allowing the upper element 2 to be closed.

L'organe 8 assure l'étanchéité autour du câble 4 entre une zone 9 intérieure au raccord 1 et l'extérieur du raccord.The member 8 seals around the cable 4 between a zone 9 inside the fitting 1 and the outside of the fitting.

La zone intérieure 9 débouche dans la partie inférieure du train de tiges, au travers de l'élément inférieur 3. Cette zone intérieure 9 est en communication avec une ouverture latérale 10 située dans le raccord et que l'on peut raccorder à une installation de pompage adaptée à produire notamment une circulation de fluide en vue des déplacements d'outils et d'instruments de mesure ou d'intervention reliés ou non au câble 4. Un de ces instruments peut être une barre de charge comportant un connecteur électrique adapté à coopérer avec un autre connecteur électrique complémentaire.The inner zone 9 opens into the lower part of the drill string, through the lower element 3. This inner zone 9 is in communication with a lateral opening 10 located in the connector and which can be connected to an installation of pumping adapted in particular to produce a circulation of fluid with a view to displacing tools and measuring or intervention instruments connected or not connected to the cable 4. One of these instruments may be a load bar comprising an electrical connector adapted to cooperate with another complementary electrical connector.

L'organe 8 assure de plus l'ancrage du câble 4 audit raccord 1.The member 8 also ensures the anchoring of the cable 4 to said connector 1.

Les moyens du raccord 1 spécifiquement destinés à l'étanchéité et portés par l'organe 8 comportent deux pièces complémentaires (8a, 8b) assemblées par des vis 7 et adaptées à être placées autour du câble (4) et à être étanches au passage de fluide de l'intérieur vers l'extérieur et réciproquement. L'intérieur de ces deux pièces est alésé de manière à pouvoir y placer des bagues déformables 16 et une bague de compression 17 et à maintenir bloquées ces bagues suivant une direction. Toutes ces bagues, ou certaines d'entre elles seulement, sont fendues de manière à pouvoir être mises en place une fois que le câble traverse le raccord 1.The means of the connector 1 specifically intended for sealing and carried by the member 8 comprise two complementary parts (8a, 8b) assembled by screws 7 and adapted to be placed around the cable (4) and to be watertight at the passage of fluid from the inside to the outside and vice versa. The interior of these two parts is bored so as to be able to place deformable rings 16 and a compression ring 17 therein and to keep these rings locked in a direction. All these rings, or some of them only, are split so that they can be put in place once the cable passes through the fitting 1.

Un écrou 18, comportant une ouverture latérale pour son introduction autour du câble 4 et sur l'organe 8, permet de mettre en compression des rondelles déformables 16 de manière à réaliser une étanchéité. L'ensemble propre à réaliser les moyens interne d'étanchéité et comportant les deux pièces complémentaires 8a, 8b, les rondelles déformables 16, la rondelle de compression 17 à demi-lune et, l'écrou 18 correspond au presse-étoupe généralement retenu pour cet usage.A nut 18, comprising a lateral opening for its introduction around the cable 4 and on the member 8, makes it possible to compress the deformable washers 16 so as to produce a seal. The assembly suitable for producing the internal sealing means and comprising the two complementary parts 8a, 8b, the deformable washers 16, the compression washer 17 with half-moon and, the nut 18 corresponds to the cable gland generally retained for this usage.

Les moyens d'étanchéité externes comportent les deux pièces complémentaires ou corps 8a, 8b coopérant avec un ou plusieurs joints d'étanchéité externes 14, tels un joint torique, et la paroi interne du raccord 1.The external sealing means comprise the two complementary parts or body 8a, 8b cooperating with one or more external seals 14, such as an O-ring, and the internal wall of fitting 1.

L'organe d'ancrage spécifiquement destiné à l'immobilisation du câble 4 par rapport au raccord 1 et porté par l'organe 8 comporte les deux pièces complémentaires ou corps 8a, 8b, et un élément de serrage 8c actionné par des vis de serrage 12.The anchoring member specifically intended for immobilizing the cable 4 relative to the connector 1 and carried by the member 8 comprises the two complementary parts or body 8a, 8b, and a clamping element 8c actuated by clamping screws 12.

L'une 8b des pièces complémentaires ou corps 8a, 8b comporte un évidement évasé débouchant sur le câble 4 et dans lequel se positionne l'élément de serrage 8c qui, sous l'action des vis à tétons 12, empêche le câble 4 de se déplacer.One 8b of the complementary parts or body 8a, 8b has a flared recess opening onto the cable 4 and in which the clamping element 8c is positioned which, under the action of the stud screws 12, prevents the cable 4 from move.

Ces vis 12 comportent des moyens d'étanchéité interdisant tout passage de fluide entre leur corps et les trous dans lesquelles elles sont logées.These screws 12 include sealing means preventing any passage of fluid between their body and the holes in which they are housed.

Les tétons de ces vis 12 agissent sur l'élément de serrage 8c par l'intermédiaire de surfaces de dégagement 13.The pins of these screws 12 act on the tightening element 8c by means of clearance surfaces 13.

L'organe 8 d'étanchéité et d'ancrage comporte en outre un ergot 19 coopérant avec une rainure 20 située dans le raccord 1, tous deux adaptés à permettre un déplacement relatif lors du désancrage du câble.The sealing and anchoring member 8 further comprises a lug 19 cooperating with a groove 20 located in the connector 1, both adapted to allow relative movement when the cable is detached.

L'organe 8 est immobilisé relativement au raccord 1 par une goupille cisaillable 11 qui permet par son cisaillement de libérer l'organe 8 en translation lorsqu'une traction est exercée sur le câble 4.The member 8 is immobilized relative to the connector 1 by a shearable pin 11 which allows, by its shearing, to release the member 8 in translation when a traction is exerted on the cable 4.

La mise en oeuvre de l'équipement s'effectue comme suit, alors que le raccord à entrée latérale est accessible, par exemple lorsqu'il est proche de la surface.The equipment is implemented as follows, while the side entry fitting is accessible, for example when it is close to the surface.

Après avoir été l'organe 8 et le galet de guidage,

  • on introduit par la fenêtre 5 une extrémité du câble,
  • on place ensuite l'organe 8 autour du câble 4, puis
  • on positionne l'organe 8 dans le raccord 1 avant de mettre dans la rainure 20 l'ergot 19 qu'il comporte et avant d'immobiliser l'organe 8 par la goupille cisaillable 11.
  • on s'assure que l'étanchéité 12a des vis à tétons 12 est active.
  • on relie la zone intérieure 9 du raccord à l'installation de pompage grâce à l'ouverture latérale 10 et l'on effectue la circulation de fluide.
After having been the member 8 and the guide roller,
  • one end of the cable is introduced through window 5,
  • the member 8 is then placed around the cable 4, then
  • the member 8 is positioned in the connector 1 before putting the lug 19 which it comprises in the groove 20 and before immobilizing the member 8 by the shearable pin 11.
  • it is ensured that the sealing 12a of the nipple screws 12 is active.
  • the inner zone 9 of the connector is connected to the pumping installation through the lateral opening 10 and the circulation of fluid is carried out.

Lorsque l'on désire ancrer le câble 4 au raccord on serre les vis 12 de manière que l'élément de serrage 8c coopérant avec les deux pièces complémentaires 8a, 8b coopérant avec cet élément, solidarise le câble 4.When it is desired to anchor the cable 4 to the connector, the screws 12 are tightened so that the clamping element 8c cooperating with the two complementary parts 8a, 8b cooperating with this element, secures the cable 4.

Les vis de serrage jouent le rôle de butées ajustables, mais on pourrait aussi utiliser des butées fixes. Ainsi, lorsque les surfaces de dégagement sont inclinées, on peut réaliser le serrage du câble par coincement de l'organe d'ancrage, ou plus précisément de l'élément de serrage, à l'intérieur du raccord, par pression axiale sur ledit organe, ou par autocoincement du câble une fois que le coincement est entamé.The clamping screws act as adjustable stops, but fixed stops could also be used. Thus, when the clearance surfaces are inclined, the cable can be clamped by wedging the anchoring member, or more precisely the clamping member, inside the connector, by axial pressure on said member. , or by self-pinching the cable once the jamming has started.

Pour retirer le câble 4 du train de tiges 3 il suffit d'effectuer les opérations précédentes dans le sens inverse.To remove the cable 4 from the drill string 3, it suffices to carry out the preceding operations in reverse.

Cependant, si pour une autre raison on ne pouvait ou si l'on ne voulait pas retirer le câble par cette procédure, comme ce peut être le cas lors d'un blocage de la colonne dans le puits, il est possible d'exercer une traction suffisante sur le câble de manière à cisailler la goupille 11 et ainsi déplacer l'organe 8 relativement au raccord 1 sur une distance suffisante pour que les tétons des vis 12 n'agissent plus sur les surfaces de dégagement 13.However, if for another reason we could not or if we did not want to remove the cable by this procedure, as may be the case when blocking the column in the well, it is possible to exercise a sufficient traction on the cable so as to shear the pin 11 and thus move the member 8 relative to the connector 1 over a sufficient distance so that the studs of the screws 12 no longer act on the release surfaces 13.

Lorsque les vis 12 libérent l'élément de serrage 8c, le câble défile librement à l'intérieur de l'organe 8 et du raccord 1, jusqu'à ce qu'on puisse complètement retirer le câble et ainsi pouvoir réaliser des opérations, telles le déblocage de la colonne, que la présence du câble empêcherait.When the screws 12 release the clamping element 8c, the cable runs freely inside the member 8 and the connector 1, until the cable can be completely removed and thus be able to perform operations, such as unlocking the column, which the presence of the cable would prevent.

Les surfaces de dégagement 13 représentées aux figures 1A et 1B comportent une pente dont l'inclinaison est adaptée à augmenter le jeu entre l'élément d'ancrage 8c et les tétons des vis 12 lorsque l'organe 8 suit le mouvement du câble imprimé par une traction sur celui-ci. Ainsi, si l'on oriente la partie inclinée de la surface de dégagement 13 dans la direction OS s'écartant du passage, l'angle alpha entre les axes orientés de la translation OT et de la partie inclinée est un angle aigu. Ainsi, le sommet de cet angle aigu est orienté vers le bas du puits, c'est-à-dire dans le sens opposé à celui dans lequel sera exercée la traction destinée à libérer le câble.The clearance surfaces 13 shown in FIGS. 1A and 1B have a slope whose inclination is adapted to increase the clearance between the anchoring element 8c and the pins of the screws 12 when the member 8 follows the movement of the cable printed by a pull on it. Thus, if the inclined part of the clearance surface 13 is oriented in the direction OS deviating from the passage, the angle alpha between the oriented axes of the translation OT and of the inclined part is an acute angle. Thus, the top of this acute angle is oriented towards the bottom of the well, that is to say in the opposite direction to that in which the traction intended to release the cable will be exerted.

La figure 3 représente un deuxième mode de réalisation de l'élément de serrage, dans lequel les surfaces de dégagement comportent une partie sans inclinaison 13a sur laquelle vient s'appuyer le téton de l'une des vis 12, suivie d'une partie 13b, telle que le jeu entre téton et élément d'ancrage 8c s'accroisse brutalement. La surface revêt donc une forme crénelée 13a, 13b, où les sommets 13a correspondent aux positions de serrage de l'élément de serrage 8c, et où les échancrures 13b correspondent aux positions de dégagement du câble.FIG. 3 represents a second embodiment of the clamping element, in which the release surfaces comprise a part without inclination 13a on which the stud of one of the screws 12 is supported, followed by a part 13b , such that the clearance between the stud and the anchoring element 8c increases suddenly. The surface therefore assumes a notched shape 13a, 13b, where the vertices 13a correspond to the clamping positions of the clamping element 8c, and where the notches 13b correspond to the cable release positions.

Toutefois, les surfaces de dégagement inclinés permettent à la fois la libération du câble après un faible déplacement de l'organe 8 et une plus grande précision dans le seuil de traction à exercer pour cisailler la goupille 11.However, the inclined release surfaces allow both the release of the cable after a slight displacement of the member 8 and greater precision in the tensile threshold to be exerted to shear the pin 11.

De préférence selon la présente invention, les axes des vis 12 pourront être sensiblement perpendiculaires aux surfaces de dégagement 13. Ainsi, l'aire des surfaces des tétons en contact avec les parties inclinées de la surface de dégagement 13, ou en contact avec les parties 13a selon le deuxième mode de réalisation, sera la plus grande possible.Preferably according to the present invention, the axes of the screws 12 can be substantially perpendicular to the clearance surfaces 13. Thus, the surface area of the studs in contact with the inclined parts of the clearance surface 13, or in contact with the parts 13a according to the second embodiment, will be as large as possible.

Avec le raccord selon l'invention, on peut par exemple être raccordé avec des éléments inférieurs de train de tiges de 2 pouces 7/8 VAM et des éléments supérieurs de 2 pouces 3/8 VAM, ce qui correspond respectivement à des diamètres extérieurs de 85 mm et 73 mm.With the connector according to the invention, it is for example possible to be connected with lower elements of drill string of 2 inches 7/8 VAM and upper elements of 2 inches 3/8 VAM, which correspond respectively to outside diameters of 85 mm and 73 mm.

Cette réduction de diamètre permet à un câble de longer les éléments supérieurs du train de tiges jusqu'à l'extrémité supérieure du puits, notamment lorsque les éléments inférieurs et supérieurs du train de tiges sont désaxés. Un désaxement avantageux peut être obtenu lorsque les éléments inférieurs et supérieurs ont une génératrice sensiblement commune.This reduction in diameter allows a cable to run along the upper elements of the drill string to the upper end of the well, especially when the lower and upper elements of the drill string are offset. An advantageous offset can be obtained when the lower and upper elements have a substantially common generator.

Des capots peuvent être utilisés pour appliquer le câble sur ces éléments supérieurs du train de tiges.Hoods can be used to apply the cable to these upper parts of the drill string.

Claims (8)

  1. Safety anchoring member (8) for a cable (4) on a support (1), the said anchoring member (8) comprising a body (8a, 8b) and a clamping element (8c) defining a passage for the cable (4), the said passage having a section that is variable over at least one portion of the length of the passage, characterised in that the said anchoring member (8) is retained inside said support (1) by releasable locking means, the body (8a, 8b) co-operating with this clamping element (8c) to reduce the section of passage of said cable (4) in order to clamp the cable (4) and in that said anchoring member (8) has at least one stop (12) designed to modify this section by displacing the clamping element (8c) relative to the body (8a, 8b) and moving to bear on this support (1) and on a surface (13) of the element, and said surface (13) having a shape that is designed to increase the section of this passage and release the cable when the locking means release the anchoring member and when sufficient translation of the body relative to this support is imparted, and said surface (13) of the anchoring member (8) has at least one section inclined at a certain angle relative to the oriented axis of translation (OT) of the anchoring member (8), this inclined portion being oriented in the direction (OS) away from the passage, and in that this angle of inclination (alpha) between the oriented axes of translation and the inclined section is an acute angle.
  2. Safety anchoring member as claimed in claim 1, characterised in that said body is designed to displace the said clamping element during translation of this body.
  3. Safety anchoring member as claimed in one of claims 1 or 2, characterised in that release of the locking means of said anchoring member and said cable is actuated by a remote control.
  4. Safety anchoring member as claimed in claim 3, characterised in that said locking means are released under the action of a tractive force exerted by the cable.
  5. Safety anchoring member as claimed in one of claims 2 to 4, characterised in that said locking means comprise a pin that is shearable beyond a certain stress threshold.
  6. Safety anchoring member as claimed in one of claims 2 to 5, characterised in that said surface of the anchoring member is crenellated (13a, 13b) and has at least one indentation (13b) and in that the said stop (12) is designed to penetrate into this indentation when the translational movement is effected.
  7. Safety anchoring member as claimed in one of claims 2 to 6, characterised in that it is designed so that the cable (4) can be introduced into the passage from the side.
  8. Safety anchoring member as claimed in one of claims 2 to 7, characterised in that it has means (14, 16, 17, 18) forming a seal with the interior of this support around the cable.
EP90109715A 1987-05-07 1988-05-05 Equipment for a drill string with a side entry sub and emergency release Expired - Lifetime EP0411260B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR8706542A FR2614932B1 (en) 1987-05-07 1987-05-07 EQUIPMENT FOR A DRILL ROD TRAIN HAVING A SIDE WINDOW CONNECTION
FR8706543A FR2614933B1 (en) 1987-05-07 1987-05-07 SECURITY ANCHOR FOR A CABLE ON A SUPPORT
FR8706543 1987-05-07
FR8706542 1987-05-07
EP88401093A EP0294252B1 (en) 1987-05-07 1988-05-05 Equipment for a drill string with a side entry sub and method for its use

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP88401093.5 Division 1988-05-05

Publications (3)

Publication Number Publication Date
EP0411260A2 EP0411260A2 (en) 1991-02-06
EP0411260A3 EP0411260A3 (en) 1993-01-13
EP0411260B1 true EP0411260B1 (en) 1995-11-22

Family

ID=26225969

Family Applications (2)

Application Number Title Priority Date Filing Date
EP90109715A Expired - Lifetime EP0411260B1 (en) 1987-05-07 1988-05-05 Equipment for a drill string with a side entry sub and emergency release
EP88401093A Expired - Lifetime EP0294252B1 (en) 1987-05-07 1988-05-05 Equipment for a drill string with a side entry sub and method for its use

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP88401093A Expired - Lifetime EP0294252B1 (en) 1987-05-07 1988-05-05 Equipment for a drill string with a side entry sub and method for its use

Country Status (5)

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US (1) US4913227A (en)
EP (2) EP0411260B1 (en)
CA (1) CA1330935C (en)
DE (2) DE3854719T2 (en)
NO (1) NO302429B1 (en)

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* Cited by examiner, † Cited by third party
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US4913227A (en) 1987-05-07 1990-04-03 Institut Francais Du Petrole Equipment for a drill pipe string including a side entry sub, a safety member for anchoring a cable on a support, and a method of using the equipment
FR2652857B1 (en) * 1989-10-11 1993-06-04 Inst Francais Du Petrole LOCKING DEVICE FOR A CABLE THROUGH THE WALL OF A TUBE SUCH AS A SIDE WINDOW CONNECTION.
AU2535095A (en) * 1994-05-28 1995-12-21 Kenneth Mackintosh A well entry tool
US6202764B1 (en) * 1998-09-01 2001-03-20 Muriel Wayne Ables Straight line, pump through entry sub
US6315044B1 (en) 1998-11-12 2001-11-13 Donald W. Tinker Pre-milled window for drill casing
WO2000060212A1 (en) 1999-04-01 2000-10-12 Baker Hughes Incorporated Pipe conveyed logging system and method
US6269879B1 (en) * 2000-03-20 2001-08-07 Harper Boyd Sleeve liner for wireline entry sub assembly
US7096961B2 (en) 2003-04-29 2006-08-29 Schlumberger Technology Corporation Method and apparatus for performing diagnostics in a wellbore operation
US7264060B2 (en) * 2003-12-17 2007-09-04 Baker Hughes Incorporated Side entry sub hydraulic wireline cutter and method
US7721798B2 (en) * 2005-07-19 2010-05-25 Tesco Corporation Wireline entry sub
JP5517446B2 (en) * 2008-12-19 2014-06-11 東洋製罐株式会社 Pouch manufacturing method and pouch
BR112013009240A2 (en) * 2010-10-05 2016-07-26 Packers Plus Energy Serv Inc cable-driven pole hole fluid treatment apparatus
CN106089137A (en) * 2016-08-16 2016-11-09 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 A kind of coiled tubing throttling traction apparatus and application thereof

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FR2522059B2 (en) 1981-03-13 1987-02-13 Inst Francais Du Petrole METHOD AND DEVICE FOR PERFORMING OPERATIONS SUCH AS MEASUREMENTS, SUCH AS MEASUREMENTS, IN WELL PORTIONS INCLUDING VERTICAL OR HORIZONTAL WELLS
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Also Published As

Publication number Publication date
EP0294252B1 (en) 1992-04-22
US4913227A (en) 1990-04-03
NO302429B1 (en) 1998-03-02
DE3854719D1 (en) 1996-01-04
EP0411260A3 (en) 1993-01-13
DE3870313D1 (en) 1992-05-27
DE3854719T2 (en) 1996-07-25
NO881959D0 (en) 1988-05-05
NO881959L (en) 1988-11-08
EP0294252A1 (en) 1988-12-07
CA1330935C (en) 1994-07-26
EP0411260A2 (en) 1991-02-06

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