FR2502236A1 - Tubular connection for drilling string - for introducing flexible line inside the borehole with reduced wear on the line - Google Patents

Tubular connection for drilling string - for introducing flexible line inside the borehole with reduced wear on the line Download PDF

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Publication number
FR2502236A1
FR2502236A1 FR8105307A FR8105307A FR2502236A1 FR 2502236 A1 FR2502236 A1 FR 2502236A1 FR 8105307 A FR8105307 A FR 8105307A FR 8105307 A FR8105307 A FR 8105307A FR 2502236 A1 FR2502236 A1 FR 2502236A1
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FR
France
Prior art keywords
flexible line
bore
sheath
cable
line
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.)
Granted
Application number
FR8105307A
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French (fr)
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FR2502236B1 (en
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IFP Energies Nouvelles IFPEN
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IFP Energies Nouvelles IFPEN
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Publication date
Application filed by IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Priority to FR8105307A priority Critical patent/FR2502236A1/en
Publication of FR2502236A1 publication Critical patent/FR2502236A1/en
Application granted granted Critical
Publication of FR2502236B1 publication Critical patent/FR2502236B1/fr
Granted legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/523—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases for use under water
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/023—Arrangements for connecting cables or wirelines to downhole devices
    • E21B17/025—Side entry subs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/06—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with laterally-arranged screws

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

Connection for a tubular column made from elements fixed end-to-end, permitting introduction of a flexible line, such as a tube for cable, inside the column, and consisting of a tubular body with ends which can be connected to the tubular column, has a hole pierced through its side wall, inclined to the junction axis for the flexible line to pass through and a sealing arrangement to ensure sealing during the passage of the flexible line through the hole. Specifically, the hole has a constant dia. and has a movable liner housed in sealed manner in the hole. Appts. for fixing the liner is provided. The flexible line passes through the liner, the central part of which has an ID equal to the OD of the flexible line. Devices for sealing and immobilisation of the flexible line are carried by the liner. Wear on the flexible line at the point of entry into the tubular column is prevented or at least greatly reduced.

Description

La présente invention concerne un raccord tubulaire pour colonne de forage, ce raccord permettant l'introduction d'une ligne flexible telle qu'un câble à l'intérieur de la colonne de forage. On désigne par ligne flexible aussi bien un câble qu'un tube. The present invention relates to a tubular connection for a drill string, this connection allowing the introduction of a flexible line such as a cable inside the drill string. The term flexible line denotes both a cable and a tube.

Au cours d'une opération de forage des sols, il est parfois nécessaire de disposer un câble à l'intérieur de la colonne de forage, par exemple pour relier à la surface un appareillage de mesure situé à l'extrémité de la colonne de forage, ou à son voisinage immédiat. During a soil drilling operation, it is sometimes necessary to have a cable inside the drill string, for example to connect to the surface a measuring device located at the end of the drill string , or in its immediate vicinity.

Lorsque la colonne de forage est constituée d'éléments vissés bout à bout, la présence d'un câble à l'intérieur de la colonne de forage complique considérablement les opérations d'assemblage ou de démontage des éléments. C'est pourquoi on a recours à un raccord spécial qui est interposé entre deux éléments de la colonne et qui assure le passage du câble de l'intérieur vers l'extérieur de la colonne de forage. When the drill string consists of elements screwed end to end, the presence of a cable inside the drill string considerably complicates the operations of assembling or dismantling the elements. This is why a special fitting is used which is interposed between two elements of the column and which ensures the passage of the cable from the inside to the outside of the drilling column.

Un tel raccord, connu de l'art antérieur, est par exemple décrit dans le brevet des Etats-Unis d'Amérique NO 4 062 551. Il comporte un corps tubulaire fileté à ses extrémités pour être interposé entre deux élements composant la colonne de forage. La paroi de ce corps tubulaire est percée selon une direction faiblement inclinée par rapport à l'axe du raccord. Un dispositif du genre presse-étoupe assure l'étanchéité autour du câble, tandis que des moyens de fixation assurent l'immobilisation du câble au niveau du raccord. Such a connection, known from the prior art, is for example described in US Patent No. 4,062,551. It comprises a tubular body threaded at its ends to be interposed between two elements making up the drill string . The wall of this tubular body is pierced in a direction slightly inclined relative to the axis of the fitting. A device of the cable gland type provides sealing around the cable, while fixing means ensure the immobilization of the cable at the connection.

L'inconvénient essentiel de ce raccord réside dans le fait qu'il apparait une usure rapide du câble au niveau du raccord. The essential drawback of this connector lies in the fact that rapid wear of the cable appears at the level of the connector.

Le but essentiel de la présente invention est donc de proposer un raccord du type décrit ci-dessus dans lequel la protection du câble est assurée au niveau du raccord pour réduire, sinon éliminer totalement, son usure. The essential object of the present invention is therefore to propose a connector of the type described above in which the protection of the cable is ensured at the connector to reduce, if not completely eliminate, its wear.

Le raccord selon l'invention comporte un fourreau amovible destiné à prendre place dans un logement incliné ménagé dans la paroi du corps tubulaire du raccord, ce fourreau étant traversé d'un perçage dont une portion a un diamètre sensiblement égal à celui du câble et dont la portion restante reçoit les moyens d'étanchéité. De plus, ce fcurreau est prolongé du câté intérieur du raccord par un organe assurant le guidage du câble à la sortie du fourreau, de façon à limiter le rayon de courbure du câble à une valeur acceptable par celui-ci. The connector according to the invention comprises a removable sheath intended to take place in an inclined housing formed in the wall of the tubular body of the connector, this sheath being traversed by a bore, a portion of which has a diameter substantially equal to that of the cable and of which the remaining portion receives the sealing means. In addition, this fcurreau is extended from the inner side of the connector by a member ensuring the guiding of the cable at the outlet of the sheath, so as to limit the radius of curvature of the cable to a value acceptable by the latter.

L'invention pourra être bien comprise et touts ses avantages apparaîtront ciairement à la lecture de la description qui suit illustrée par les figures annexées parmi lesquelles
- la figure 1 représente, en coupe, un raccord selon l'invention,
- la figure 2 est une vue en coupe selon la ligne Il-Il de la
figure 1 et
- la figure 3 est une vue en coupe partielle, selon la ligne III-ITI
de la figure 1.The invention can be well understood and all its advantages will become apparent on reading the description which follows, illustrated by the appended figures among which
FIG. 1 represents, in section, a connector according to the invention,
- Figure 2 is a sectional view along the line Il-Il of the
figure 1 and
- Figure 3 is a partial sectional view along the line III-ITI
of figure 1.

La figure 1 représente, en coupe, un raccord selon l'invention qui comporte un corps tubulaire 1 fileté à son txtréai té inférieure 2 et à-son extrémité supérieure 3 pour etre interposé entre deux éléments schématisés en 4 et 5 et composant une colorne de forage.  Figure 1 shows, in section, a connector according to the invention which comprises a tubular body 1 threaded at its lower txtréai t 2 and at its upper end 3 to be interposed between two elements shown schematically in 4 and 5 and forming a color of drilling.

La paroi du corps 1 est traversée par un perçage oblique 5 dont l'axe X'X fait avec l'axe du raccord un angle aigu onde valeur généralement comprise entre 100 et 150. The wall of the body 1 is crossed by an oblique bore 5, the axis X'X of which forms an acute wave angle with the axis of the fitting, generally between 100 and 150.

Le perçage 6 reçoit un fourreau 7 dont l'extrémité inférieure 7a débouche dans l'alésage du corps 1. Des éléments tels que des joints schématisés en 8, assurent l'étanchéité entre le perçage 6 et le fourreau 7. Un doigt 9 porté par le fourreau 7 coopère avec une rainure 10 usinée dans le corps 1 pour immobiliser axialement le fourreau 7. The bore 6 receives a sleeve 7, the lower end 7a of which opens into the bore of the body 1. Elements such as seals shown diagrammatically at 8, ensure the seal between the bore 6 and the sleeve 7. A finger 9 carried by the sheath 7 cooperates with a groove 10 machined in the body 1 to immobilize the sheath 7 axially.

Le câble 12 traverse le fourreau 7 qui, dans sa partie centrale 7b, a un alésage de diamètre interne pratiquement égal au diamètre du câble et présente dans sa partie supérieure 7c un diamètre notablement plus grand permettant de loger un organe 11 assurant l'etancheité autour
du câble 12. Cet organe est, par exemple, du type presse-étoupe compor
tant des bagues déformables Ila, une bague de compression llb et un
écrou llc. A sa partie inférieure 7a l'alésage du fourreau 7 a une forme
évasée qui limite le rayon de courbure du câble 12 à une valeur accep
table. Pendant l'utilisation du raccord, l'extrémité 7a du fourreau 7
assure également une protection du câble 12 contre l'écoulement du fluide
de forage que l'on peut être amené à faire circuler dans la colonne de
forage.The cable 12 passes through the sheath 7 which, in its central part 7b, has a bore with an internal diameter practically equal to the diameter of the cable and has, in its upper part 7c, a noticeably larger diameter making it possible to accommodate a member 11 ensuring sealing around
cable 12. This member is, for example, of the cable gland type
both Ila deformable rings, an llb compression ring and a
nut llc. At its lower part 7a the bore of the sleeve 7 has a shape
flared which limits the radius of curvature of cable 12 to an acceptable value
table. During the use of the fitting, the end 7a of the sleeve 7
also protects cable 12 against the flow of fluid
of drilling that we may have to circulate in the column of
drilling.

Des moyens 13 d'immobilisation du câble 12 sont également prévus ĕt, comme on peut le voir sur la figure 2 qui est une vue en coupe selon
la ligne II-II de la figure 1, ils comportent une pièce 14 de blocage du
câble 12 qui est maintenue dans un logement 15 ménagé dans la partie
centrale 7b du fourreau 7 et qui débouche dans l'alésage du fourreau.Means 13 for immobilizing the cable 12 are also provided ĕt, as can be seen in Figure 2 which is a sectional view along
line II-II of FIG. 1, they comprise a part 14 for blocking the
cable 12 which is held in a housing 15 formed in the part
central 7b of the sleeve 7 and which opens into the bore of the sleeve.

La pièce 14 est maintenue en place par des circlips ou des joncs 16
(fig. 1), et le serrage est réalisé par des vis à téton 17 équipées
d'éléments d'étanchéité 18.The part 14 is held in place by circlips or rods 16
(fig. 1), and tightening is carried out by nipple screws 17 fitted
sealing elements 18.

A la partie supérieure, le câble et l'extrémité du fourreau 7
sont protégés par un carter 19 (figs. 1 et 3) maintenu en place par ur
axe fileté 20.At the top, the cable and the end of the sheath 7
are protected by a casing 19 (figs. 1 and 3) held in place by ur
threaded pin 20.

A l'extrémité libre du câble 12 est généralement fixé un
organe 21 de raccordement du câble à un appareillage situé dans la colon
ne de forage. Pour faciliter les opérations d'introduction de cet organe
21 à travers le raccord 1, l'alésage 6 aura de préférence un diamètre
suffisant pour permettre le passage de l'organe 21.At the free end of the cable 12 is generally fixed a
member 21 for connecting the cable to an apparatus located in the colon
do drilling. To facilitate the operations of introduction of this organ
21 through the fitting 1, the bore 6 will preferably have a diameter
sufficient to allow passage of the member 21.

Il résulte de la description précédente que lors de la
traversée du raccord, le câble 12 est parfaitement maintenu et guidé
ce qui évite toute usure prématurée du câble à ce niveau.It follows from the preceding description that during the
through the fitting, the cable 12 is perfectly maintained and guided
which prevents any premature wear of the cable at this level.

De plus, pour des câbles de sections différentes, il est
possible de prévoir des fourreaux d'alésages différents qui viennent
prendre place dans l'alésage 6, ce qui permet d'utiliser le même corps
tubulaire. In addition, for cables of different sections, it is
possible to provide sheaths of different bores which come
take place in bore 6, which allows the same body to be used
tubular.

Claims (4)

REVENDICATIONS 1. - Raccord pour colonne tubulaire composée d'éléments fixés bout à bout, ce raccord permettant l'introduction d'une ligne flexible telle qu'un câble à l'intérieur de la colonne et comportant un corps tubu- laire (1) pourvu à ses extrémités (2-3) de moyens de raccordement à la colonne tubulaire, un perçage (6) incliné par rapport à l'axe du raccord et traversant de part en part la paroi du corps (1;; pour perret? le passage de la ligne flexible (12), des moyens d'étanchéité (Il) assurant l'étanchéité autour de la ligne flexible (12) lors de la traversée de la paroi du corps (1) et des moyens d'immobilisation de la ligne flexible (12) par rapport au corps(1), caractérisé en ce que le perçage (6) incliné a un diamètre sensiblement constant, en ce qu'il comporte un fourreau amovible (7) logé de façon étanche dans le perçage (6), des moyens (9-'o? d'immobilisation du fourreau dans le perçage incliné (6), la ligne flexible (12) traversant le fourreau dont la partie centrale a un diamètre interne égal au diamètre externe de la ligne flexible, les moyens d'étanchéité et d'immobilisation de la ligne flexible (12) étant portés par le fourreau (7). 1. - Fitting for tubular column composed of elements fixed end to end, this fitting allowing the introduction of a flexible line such as a cable inside the column and comprising a tubular body (1) provided at its ends (2-3) of means for connection to the tubular column, a bore (6) inclined with respect to the axis of the fitting and passing right through the wall of the body (1; for perret? the passage the flexible line (12), sealing means (II) sealing around the flexible line (12) when crossing the wall of the body (1) and means for immobilizing the flexible line (12) relative to the body (1), characterized in that the inclined bore (6) has a substantially constant diameter, in that it comprises a removable sheath (7) housed in a sealed manner in the bore (6), means (9-'o? for immobilizing the sheath in the inclined bore (6), the flexible line (12) passing through the sheath, the central part of which has a diameter internal equal to the external diameter of the flexible line, the sealing and immobilizing means of the flexible line (12) being carried by the sheath (7). 2. - Raccord selon la revendication 1, caractérisé en ce que le fourreau (7) pénètre à sa partie inférieure dans l'alésage du corps (1) et assure le guidage de la ligne flexible (12). 2. - A connector according to claim 1, characterized in that the sheath (7) penetrates at its lower part into the bore of the body (1) and guides the flexible line (12). 3. - Raccord selon la revendication 2, caractérisé en ce que l'alésage de la partie inférieure du fourreau a une forme évasée limitant le rayon de courbure de la ligne flexible à une valeur acceptable. 3. - A connector according to claim 2, characterized in that the bore of the lower part of the sleeve has a flared shape limiting the radius of curvature of the flexible line to an acceptable value. 4. - Raccord selon la revendication 3, caractérisé en ce qu'il comporte un carter (19) assurant la protection de la ligne flexible (12) au voisinage du fourreau (7) et à l'extérieur du corps (1).  4. - Fitting according to claim 3, characterized in that it comprises a casing (19) ensuring the protection of the flexible line (12) in the vicinity of the sleeve (7) and outside the body (1).
FR8105307A 1981-03-17 1981-03-17 Tubular connection for drilling string - for introducing flexible line inside the borehole with reduced wear on the line Granted FR2502236A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8105307A FR2502236A1 (en) 1981-03-17 1981-03-17 Tubular connection for drilling string - for introducing flexible line inside the borehole with reduced wear on the line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8105307A FR2502236A1 (en) 1981-03-17 1981-03-17 Tubular connection for drilling string - for introducing flexible line inside the borehole with reduced wear on the line

Publications (2)

Publication Number Publication Date
FR2502236A1 true FR2502236A1 (en) 1982-09-24
FR2502236B1 FR2502236B1 (en) 1984-08-17

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FR8105307A Granted FR2502236A1 (en) 1981-03-17 1981-03-17 Tubular connection for drilling string - for introducing flexible line inside the borehole with reduced wear on the line

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Country Link
FR (1) FR2502236A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2614933A1 (en) * 1987-05-07 1988-11-10 Inst Francais Du Petrole Member for the safety anchoring of a cable on a support
EP0294252A1 (en) * 1987-05-07 1988-12-07 Institut Français du Pétrole Equipment for a drill string with a side entry sub and method for its use
FR2617232A1 (en) * 1987-06-25 1988-12-30 Inst Francais Du Petrole SHUTTER FOR CONDUIT OR PASSAGE OF CABLE

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609639A (en) * 1969-06-30 1971-09-28 Us Elevator Corp Underwater electrical connector apparatus
FR2224893A1 (en) * 1973-04-09 1974-10-31 Norddeutsche Seekabelwerke Ag
US3980369A (en) * 1975-12-15 1976-09-14 International Telephone And Telegraph Corporation Submersible pump interconnection assembly
US4062551A (en) * 1975-12-05 1977-12-13 Jim Base Cable seal unit for earth-boring drill strings
FR2406062A1 (en) * 1977-05-23 1979-05-11 Shell Int Research PIPE TRUNK FOR DRILLING OPERATIONS AND PROCESS FOR ITS MANUFACTURING
US4200297A (en) * 1976-09-13 1980-04-29 Sperry-Sun, Inc. Side entry clamp and packoff

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609639A (en) * 1969-06-30 1971-09-28 Us Elevator Corp Underwater electrical connector apparatus
FR2224893A1 (en) * 1973-04-09 1974-10-31 Norddeutsche Seekabelwerke Ag
US4062551A (en) * 1975-12-05 1977-12-13 Jim Base Cable seal unit for earth-boring drill strings
US3980369A (en) * 1975-12-15 1976-09-14 International Telephone And Telegraph Corporation Submersible pump interconnection assembly
US4200297A (en) * 1976-09-13 1980-04-29 Sperry-Sun, Inc. Side entry clamp and packoff
FR2406062A1 (en) * 1977-05-23 1979-05-11 Shell Int Research PIPE TRUNK FOR DRILLING OPERATIONS AND PROCESS FOR ITS MANUFACTURING

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/65 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2614933A1 (en) * 1987-05-07 1988-11-10 Inst Francais Du Petrole Member for the safety anchoring of a cable on a support
EP0294252A1 (en) * 1987-05-07 1988-12-07 Institut Français du Pétrole Equipment for a drill string with a side entry sub and method for its use
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
EP0411260A2 (en) 1987-05-07 1991-02-06 Institut Français du Pétrole Equipment for a drill string with a side entry sub and emergency release
EP0411260A3 (en) * 1987-05-07 1993-01-13 Institut Francais Du Petrole Equipment for a drill string with a side entry sub and method for its use
FR2617232A1 (en) * 1987-06-25 1988-12-30 Inst Francais Du Petrole SHUTTER FOR CONDUIT OR PASSAGE OF CABLE

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Publication number Publication date
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