CA2203690A1 - Internal coiled tubing connector - Google Patents
Internal coiled tubing connectorInfo
- Publication number
- CA2203690A1 CA2203690A1 CA 2203690 CA2203690A CA2203690A1 CA 2203690 A1 CA2203690 A1 CA 2203690A1 CA 2203690 CA2203690 CA 2203690 CA 2203690 A CA2203690 A CA 2203690A CA 2203690 A1 CA2203690 A1 CA 2203690A1
- Authority
- CA
- Canada
- Prior art keywords
- coiled tubing
- length
- cylindrical body
- opening
- internal
- 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.)
- Abandoned
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Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
An internal coiled tubing connector for connecting a first length (10) of coiled tubing to a second length (14) of coiled tubing includes a cylindrical body (18) having a longitudinal bore (20) therethrough and adapted to be inserted into the first length (10) and the second length (14) of coiled tubing; a by-pass passageway (34) extending from a first opening (32) in a longitudinal outer surface of the cylindrical body (18) to a second opening (32) in the longitudinal outer surface of the cylindrical body (18); and elastomeric seals (28) mounted to the longitudinal outer surface of the cylindrical body (18) adjacent the first opening (32) and the second opening (32). When the first opening (32) is placed in communication with a passageway (16) whithin the wall of the first length (10) of coiled tubing and when the second opening (32) is placed in communication with a passageway (16) within a wall of the second length (14) of coiled tubing a communication by-pass is established across the connection of the first (10) and the second (14) length of coiled tubing.
Description
INTERNAL COILED TUBING CONNECTOR
The present invention relates to an intern~l coiled tubing co,~eclol and, more particularly, to a comle~;lor that provides co,-"",l..ication for intçrn~l passageways across a 15 connection b~lweell lengths of coiled tubing.
Coiled tubing is used to provide a fluid passage within a wellbore, as well as to convey tools and e4uip~ lll into and from a wellbore. Lengths of coiled tubing need to be joined in a manner wherein the external ~i~m~ter remains constant to accommodate the 20 spooling of the coiled tubing lengths on reels and passage of through the injector mech~ni~mc. Examples of internal coiled tubing connectors are disclosed in U.S. Patents 5,238,273 and 5,306,050 which are commonly assigned hereto.
Oftentimes downhole tools and equipmént conveyed by coiled tubing require electrical 25 and/or hydraulic control lines that are either disposed within the internal bore of the coiled tubing or are ~ rh.ocl to the outer surface of the coiled tubing. The control lines within the coiled tubing render it ~liffir~llt to impossible to perform wireline operations through the coiled tubing because the wireline tool can become tangled with the control lines. The control lines on the outside of the coiled tubing can become darnaged when the coiled tubing 30 is inserted into and withdrawn from the wellbore. Further. control lines on the outside of the SUBSTITUTE SHEET (RULE 26) ` CA 02203690 1997-04-24 WO g6/18063 r~ ).,3sllssls
The present invention relates to an intern~l coiled tubing co,~eclol and, more particularly, to a comle~;lor that provides co,-"",l..ication for intçrn~l passageways across a 15 connection b~lweell lengths of coiled tubing.
Coiled tubing is used to provide a fluid passage within a wellbore, as well as to convey tools and e4uip~ lll into and from a wellbore. Lengths of coiled tubing need to be joined in a manner wherein the external ~i~m~ter remains constant to accommodate the 20 spooling of the coiled tubing lengths on reels and passage of through the injector mech~ni~mc. Examples of internal coiled tubing connectors are disclosed in U.S. Patents 5,238,273 and 5,306,050 which are commonly assigned hereto.
Oftentimes downhole tools and equipmént conveyed by coiled tubing require electrical 25 and/or hydraulic control lines that are either disposed within the internal bore of the coiled tubing or are ~ rh.ocl to the outer surface of the coiled tubing. The control lines within the coiled tubing render it ~liffir~llt to impossible to perform wireline operations through the coiled tubing because the wireline tool can become tangled with the control lines. The control lines on the outside of the coiled tubing can become darnaged when the coiled tubing 30 is inserted into and withdrawn from the wellbore. Further. control lines on the outside of the SUBSTITUTE SHEET (RULE 26) ` CA 02203690 1997-04-24 WO g6/18063 r~ ).,3sllssls
-2-coiled tubing hinder the packing off or sealing of the wellbore. To overcome these deficiencies, coiled tubing with an internal passageways within the wall of the coiled tubing has been developed. Such coiled tubing is disclosed within copending U.S. PatentApplication 08/142,637, which is commonly ~c~ignlocl hereto.
There is a need for an internal coiled tubing connector that can provide for co....,.~..;ralion for the passageways within the wall of the coiled tubing across the collnecLion between the lengths of such coiled tubing.
The present illv~ ion has been cr .. ~ t~ to ov~ Icol-le the Çc~l. goirlg defit~ip-nr-içs and meet the above described needs. Specifically, the present invention is an internal coiled tubing comleclor for col-.-P~l;..~ a first length of coiled tubing, which has at least one passage in the wall thereof, to a second length of similar coiled tubing. The internal coiled tubing co-~neclor includes a cylind~ical body having a longi~ n~l bore thelc~ ugh and adapted to5 be inserted into the first length and the second length of coiled tubing; a by-pass passagew ay g from a first openillg in a lon~ihl(lin~l outer surface of the cylindrical body to a second opening in the longit l-lin~l outer surface of the cylindrical body; and elas~oll~iic seals mounted to the lon~itll~in~l outer surface of the cylindrical body adjacent the first opening and the second opening. When the first opening is placed in co,.",.,..-ic~tion with a 20 passageway within a wall of the first length of coiled tubing and when the second opening is placed in co.. l.lir~tion with a passageway within a wall of the second len~th of coiled tubing a communic~tion by-pass is established across the connection of the first length and the second length of coiled tubing.
Figure 1 is side elevational view in cross-section of one preferred embodiment of an internal coiled tubing connector welded within coiled tubing having a sin_le internal passageway.
Figure 2 is a view taken along line A-A of Figure 1.
There is a need for an internal coiled tubing connector that can provide for co....,.~..;ralion for the passageways within the wall of the coiled tubing across the collnecLion between the lengths of such coiled tubing.
The present illv~ ion has been cr .. ~ t~ to ov~ Icol-le the Çc~l. goirlg defit~ip-nr-içs and meet the above described needs. Specifically, the present invention is an internal coiled tubing comleclor for col-.-P~l;..~ a first length of coiled tubing, which has at least one passage in the wall thereof, to a second length of similar coiled tubing. The internal coiled tubing co-~neclor includes a cylind~ical body having a longi~ n~l bore thelc~ ugh and adapted to5 be inserted into the first length and the second length of coiled tubing; a by-pass passagew ay g from a first openillg in a lon~ihl(lin~l outer surface of the cylindrical body to a second opening in the longit l-lin~l outer surface of the cylindrical body; and elas~oll~iic seals mounted to the lon~itll~in~l outer surface of the cylindrical body adjacent the first opening and the second opening. When the first opening is placed in co,.",.,..-ic~tion with a 20 passageway within a wall of the first length of coiled tubing and when the second opening is placed in co.. l.lir~tion with a passageway within a wall of the second len~th of coiled tubing a communic~tion by-pass is established across the connection of the first length and the second length of coiled tubing.
Figure 1 is side elevational view in cross-section of one preferred embodiment of an internal coiled tubing connector welded within coiled tubing having a sin_le internal passageway.
Figure 2 is a view taken along line A-A of Figure 1.
3(~
SUBSTITUTE SHEET (RULE 26) WO g6/18063 ~ 9sll58l8 Figure 3 is side elevational view in cross-section of an ~ltPrn~te plef~ d embodiment of an internal coiled tubing connector welded within coiled tubing having a plurality of internal passageways.
S Figure 4 is a view taken along line A-A of Figure 3.
Figure 5 is side elevational view in cross-section of an alternate p.e~ d embodiment of an int~rn~l coiled tubing col~nector welded within coiled tubing having a plurality of internal passageways.
Figure 6 is a view taken along line A-A of Figure 5.
Figure 7 is a view taken along line B-B of Figure 5.
Figure 8 is side elevational view in cross-section of an alternate p.~,~.. ed embodiment of an internal coiled tubing con-le~;lor mollnte~ using wedge and slip m~ch~nicmc within coiled tubing having a single internal passageway.
Figure 9 is a view taken along line A-A of Figure 8.
Figure 10 is side elevational view in cross-section of an alternate pleÇ~ d embodiment of an internal coiled tubing connector mounted using wedge and slip m.och~ni~m~
within coiled tubing having a plurality of internal passageways.
Figure 11 is a view taken along line A-A of Figure 10.
Figure 12 is side elevational view in cross-section of an alternate plcfell~d embodiment of an internal coiled tubing col~lec~ol formed from two separate bodies welded within coiled tubing having at least one internal passageway.
3(~
SUBSTITUTE SHEET (RULE 26) W Og6/18063 1~~ /15818
SUBSTITUTE SHEET (RULE 26) WO g6/18063 ~ 9sll58l8 Figure 3 is side elevational view in cross-section of an ~ltPrn~te plef~ d embodiment of an internal coiled tubing connector welded within coiled tubing having a plurality of internal passageways.
S Figure 4 is a view taken along line A-A of Figure 3.
Figure 5 is side elevational view in cross-section of an alternate p.e~ d embodiment of an int~rn~l coiled tubing col~nector welded within coiled tubing having a plurality of internal passageways.
Figure 6 is a view taken along line A-A of Figure 5.
Figure 7 is a view taken along line B-B of Figure 5.
Figure 8 is side elevational view in cross-section of an alternate p.~,~.. ed embodiment of an internal coiled tubing con-le~;lor mollnte~ using wedge and slip m~ch~nicmc within coiled tubing having a single internal passageway.
Figure 9 is a view taken along line A-A of Figure 8.
Figure 10 is side elevational view in cross-section of an alternate pleÇ~ d embodiment of an internal coiled tubing connector mounted using wedge and slip m.och~ni~m~
within coiled tubing having a plurality of internal passageways.
Figure 11 is a view taken along line A-A of Figure 10.
Figure 12 is side elevational view in cross-section of an alternate plcfell~d embodiment of an internal coiled tubing col~lec~ol formed from two separate bodies welded within coiled tubing having at least one internal passageway.
3(~
SUBSTITUTE SHEET (RULE 26) W Og6/18063 1~~ /15818
-4-Figure 13 is a view taken along line A-A of Figure 12.
Figure 14 is ~ view taken along line B-B of Figure 12.
Figure 15 is side elevational view in cross-section of an alternate pl~r~ ,d embodiment of an int~ l coiled tubing coi-l-kctol formed from two separate bodies mounted using wedge and slip ...~c~u.~ within coiled tubing having at least one internal p~SSa~,~ay.
As has been briefly deserihe(l above, the present invention is an int~rn~l coiled tubing co.~.-ectQr for providing internal passageway c~ l;on across a col~leclion between a first length and a second length of coiled tubing. One ~l. Çe~l~d embodiment of the present invention includes a ~;ylill~ical body having a longitll-lin~l bore tllelt~ ough and adapted to be inserted into the first length and the second length of coiled tubing; a by-pass passageway ~Yt~n(ling from a first opening in a longi~l-lin~l outer surface of the cylindrical body to a second opening in the lon~it~ in~l outer surface of the cylindrical body; and elastomeric seals mounted to the longit ltlin~l outer surface of the cylindrical body adjacent the first opening and the second opening. When the first opening is placed in co~ nic~tion with a passageway within a wall of the first length of coiled tubing and when the second opening is placed in cornmunication with a passageway within a wall of the second length of coiled tubing a communication by-pass is established across the connection of the first length and the second length of coiled tubing.
The present invention can be used to provide a by-pass passageway for fluids andcontrol lines, electrical control lines and/or fiber optics across a connection of a first length of coiled tubing to a second length of coiled tubing. These fluid passageways, electrical control lines and/or fiber optics can be strung within the internal bore of the coiled tubing; however, the present invention is particularly adapted to provide the by-pass passageway for coiled tubing that has at least one internal passageway within the wall of the coiled tubing. Such SUBSTITUTE SHEET (RULE 26) W O96/180G3 l~ 9~/15818 S~
coiled tubing is disclosed within copending U.S. Patent Application 08/142,637, which is c~ monly acsi~n~ hereto and which is incorporated herein by lef~lellce.
As used herein the term "C~m~ r~tionn means the ability to pass hydraulic control
Figure 14 is ~ view taken along line B-B of Figure 12.
Figure 15 is side elevational view in cross-section of an alternate pl~r~ ,d embodiment of an int~ l coiled tubing coi-l-kctol formed from two separate bodies mounted using wedge and slip ...~c~u.~ within coiled tubing having at least one internal p~SSa~,~ay.
As has been briefly deserihe(l above, the present invention is an int~rn~l coiled tubing co.~.-ectQr for providing internal passageway c~ l;on across a col~leclion between a first length and a second length of coiled tubing. One ~l. Çe~l~d embodiment of the present invention includes a ~;ylill~ical body having a longitll-lin~l bore tllelt~ ough and adapted to be inserted into the first length and the second length of coiled tubing; a by-pass passageway ~Yt~n(ling from a first opening in a longi~l-lin~l outer surface of the cylindrical body to a second opening in the lon~it~ in~l outer surface of the cylindrical body; and elastomeric seals mounted to the longit ltlin~l outer surface of the cylindrical body adjacent the first opening and the second opening. When the first opening is placed in co~ nic~tion with a passageway within a wall of the first length of coiled tubing and when the second opening is placed in cornmunication with a passageway within a wall of the second length of coiled tubing a communication by-pass is established across the connection of the first length and the second length of coiled tubing.
The present invention can be used to provide a by-pass passageway for fluids andcontrol lines, electrical control lines and/or fiber optics across a connection of a first length of coiled tubing to a second length of coiled tubing. These fluid passageways, electrical control lines and/or fiber optics can be strung within the internal bore of the coiled tubing; however, the present invention is particularly adapted to provide the by-pass passageway for coiled tubing that has at least one internal passageway within the wall of the coiled tubing. Such SUBSTITUTE SHEET (RULE 26) W O96/180G3 l~ 9~/15818 S~
coiled tubing is disclosed within copending U.S. Patent Application 08/142,637, which is c~ monly acsi~n~ hereto and which is incorporated herein by lef~lellce.
As used herein the term "C~m~ r~tionn means the ability to pass hydraulic control
5 and actuation fluids, even at elevated pl~:SSUl~S, as well as the provision of a route for electrical wires and/or fiber optics within an el~rppslll~t~d and protected en~/irù~
In Figure 1 a first length 10 of coiled tubing is shown co~n~cte~ by a welded joint 12 to a second leng~ 14 of coiled tubing. At least one intern~l passageway 16 is provided within a wall 18 of the coiled tubing 10 and 14. As can be seen in Figure 1, the welded joint 12 extends across and thereby will block the internal passageways 16 at the col~le;~
Th. leru.e, the present invention is provided to by-pass the welded joint 12 and thereby ensure co~ tion through the internal passageways 16 in the coiled tubing 10 and 14.
One p~relled embo~im~nt of the present invention is shown in Figure 1 wherein a generally 15 ;ylilldlical body 18 includes a lon~ in~l bore 20 e~ g thelellllough. The outer m~ter of the cylindrical body 18 is less than the internal tli~m~oter of the coiled tubing 10 and 14. The edges of the cylindrical body 18 adjacent the bore 20 are shown with flats or bevels 22, which are ~leÇellcd to assist wireline e~luip~ent and fluids to freely pass through the bore 20, but the bevels 22 are not n~cecs~ry to establish co.lllll~ ic~tion across the connector.
An outer lon~ lin~l surface 24 of the cylindrical body 18 includes an annular recess 26 ~djacent a first end and adjacent a second end thereof, and an annular elastomeric seal 28 is mounted within each recess 26. The seals 28 can be O-rings formed from any suitable 25 elastomeric material, and are preferably formed from Aflas, Viton or nitrile rubber. The seals 28 provide a fluidic seal across the longitntlin~l outer surface 24 of the cylindrical body 18 when the seals 28 engage an inner surface of the longitl~lin~l bore 30 within the coiled tubing 10 and 14.
SUBSTITUTE SHEET (RULE 26) W O96/18063 ~ /15818
In Figure 1 a first length 10 of coiled tubing is shown co~n~cte~ by a welded joint 12 to a second leng~ 14 of coiled tubing. At least one intern~l passageway 16 is provided within a wall 18 of the coiled tubing 10 and 14. As can be seen in Figure 1, the welded joint 12 extends across and thereby will block the internal passageways 16 at the col~le;~
Th. leru.e, the present invention is provided to by-pass the welded joint 12 and thereby ensure co~ tion through the internal passageways 16 in the coiled tubing 10 and 14.
One p~relled embo~im~nt of the present invention is shown in Figure 1 wherein a generally 15 ;ylilldlical body 18 includes a lon~ in~l bore 20 e~ g thelellllough. The outer m~ter of the cylindrical body 18 is less than the internal tli~m~oter of the coiled tubing 10 and 14. The edges of the cylindrical body 18 adjacent the bore 20 are shown with flats or bevels 22, which are ~leÇellcd to assist wireline e~luip~ent and fluids to freely pass through the bore 20, but the bevels 22 are not n~cecs~ry to establish co.lllll~ ic~tion across the connector.
An outer lon~ lin~l surface 24 of the cylindrical body 18 includes an annular recess 26 ~djacent a first end and adjacent a second end thereof, and an annular elastomeric seal 28 is mounted within each recess 26. The seals 28 can be O-rings formed from any suitable 25 elastomeric material, and are preferably formed from Aflas, Viton or nitrile rubber. The seals 28 provide a fluidic seal across the longitntlin~l outer surface 24 of the cylindrical body 18 when the seals 28 engage an inner surface of the longitl~lin~l bore 30 within the coiled tubing 10 and 14.
SUBSTITUTE SHEET (RULE 26) W O96/18063 ~ /15818
-6-As shown in Figures 1 and 2, at least two spaced bores 32 extend from the outer surface 24 of the cylindrical body 18 partially thereinto to intersect a lon~ in~l bore 34 ~Yt~n~1in~ partially through the cylindrical body 18. If the longih-~in~l bore 34 is formed by drilling, then a plug 36 of suitable mPt~llic m~tf ri~l seals an open end of the lon~itll~lin~l bore 34. The outer surface 24 is provided with a counter bore at the il~L~l~e~;~ion of the bores 32 with the outer surface 24 of the cylindrical body 18. Preferably, the outer surface 24 inr.hldes annular recesses 38 through which the bores 32 extend into the cylindrical body 18.
The bores 32 and the longit~ in~l bore 34 define a by-pass passageway that provides a means for ~)f.llli~ ir~tion belwee-- the intPrn~l passageways 16 of the coiled tubing 10 and 14 across the welded joint 12.
When the internal coiled tubing co~ clor of the present invention is to be used, the internal passageways 16 within the coiled tubing 10 and 14 are cut, milled or drilled to create o~e-~illgs 40 ~ rent the ends of the coiled tubing 10 and 14 to provide a passageway for co~ ;ratinn into and from the bore 30 of the coiled tubing 10 and 14. The cylilldlical body 18 is inserted into the first length of coiled tubing 10 so that one of the bores 32 is spaced adjacent and in comml-nir~tion with opening 40 in the passageway 16 of the coiled tubing 10. Likewise, the second length 14 of coiled tubing is brought into surrounding engagemeM with an opposite end of the cylindrical body 18 with the other bore 32 spaced adjacent and in co~ ication with the opening 40 in the passageway 16 of the second length 14 of coiled tubing. To help ensure that the cylindrical body 18 is centered at the point of connection of the coiled tubing, an annular ridge 42 is provided at approximately the center line of the outer surface 24 of the cylindrical body 18, which is preferably the midway point between the bores 32. The outer diameter of the ridge 42 being greater than the internal diameter of the bore 30 in the coiled tubing 10 and 14 so that the cylindrical body 18 cannot move within the bore 30 of the coiled tubing 10 and 14. The annular ridge 42 fits within a bevel 44 formed on an inner edge of the ends of the coiled tubing 10 and 14. The ends of the coiled tubing 10 and 14 are then welded, as is well known to those skilled in the art to create the welded joint 12. As shown in Figure 1, the molten material generated SUBSTITUTE SHEET (RULE 26) -Wog6/18063 r~ sn5818
The bores 32 and the longit~ in~l bore 34 define a by-pass passageway that provides a means for ~)f.llli~ ir~tion belwee-- the intPrn~l passageways 16 of the coiled tubing 10 and 14 across the welded joint 12.
When the internal coiled tubing co~ clor of the present invention is to be used, the internal passageways 16 within the coiled tubing 10 and 14 are cut, milled or drilled to create o~e-~illgs 40 ~ rent the ends of the coiled tubing 10 and 14 to provide a passageway for co~ ;ratinn into and from the bore 30 of the coiled tubing 10 and 14. The cylilldlical body 18 is inserted into the first length of coiled tubing 10 so that one of the bores 32 is spaced adjacent and in comml-nir~tion with opening 40 in the passageway 16 of the coiled tubing 10. Likewise, the second length 14 of coiled tubing is brought into surrounding engagemeM with an opposite end of the cylindrical body 18 with the other bore 32 spaced adjacent and in co~ ication with the opening 40 in the passageway 16 of the second length 14 of coiled tubing. To help ensure that the cylindrical body 18 is centered at the point of connection of the coiled tubing, an annular ridge 42 is provided at approximately the center line of the outer surface 24 of the cylindrical body 18, which is preferably the midway point between the bores 32. The outer diameter of the ridge 42 being greater than the internal diameter of the bore 30 in the coiled tubing 10 and 14 so that the cylindrical body 18 cannot move within the bore 30 of the coiled tubing 10 and 14. The annular ridge 42 fits within a bevel 44 formed on an inner edge of the ends of the coiled tubing 10 and 14. The ends of the coiled tubing 10 and 14 are then welded, as is well known to those skilled in the art to create the welded joint 12. As shown in Figure 1, the molten material generated SUBSTITUTE SHEET (RULE 26) -Wog6/18063 r~ sn5818
-7-during the welding process extends partly into the cylindrical body 18 so securely mount the cylindrical body 18 within the coiled tubing 10 and 14 at the point of col~ne ;lion.
Hydraulic fluid, electrical control lines and/or fiber optics are passed through the passageway 16 of the first length 10 of coiled tubing, through the bore 32, through the bore 34, through the other bore 32, and then into the passageway 16 of the second length 14 of coiled tubing. The use of the internal coiled tubing co~ e~;~ol of the preseM invention permits lengths of coiled tubing to be co.~ d and permit internal passageway Co....~ that has not been available hel.,t~ful~.
An ~ltçrn~t~ pl~Çell~d embo~lim~nt of the internal coiled tubing co~ ctor of thepresent invention is shown in Figures 3 and 4 wllc~ill the coiled tubing 10 and 14 include a plurality of passageways 16 with each radially spaced around the wall of the coiled tubing 10 and 14. To permit sep~le co--""l~ AIion across the cormection of the coiled tubing 10 and 14, a plurality of longi~-~in~l bores 34 are spaced radially around ~e cylindrical body 18.
Each such lon~itll-lin~l bore 34 is illlel~e~ d by its own lesl,eeli~e set of bores 32 longi~ in~11y spaced along the outer surface 24 of the cylindrical body 18. To prevent fluid c-)mmllnication bel~e~n the le~e~ e sets of bores 32, the outer surface 24 is provided with a plurality of recesses 26 with elastomeric annular seals 28 mounted therein. The in~t~ tion and the operation of this piel~lled embodimem of an internal coiled tubing connector of the presem invention is essemially the same as for the embodiment described above in reference to Figures 1 and 2.
An alternate pler~ d embodirnent of the internal coiled tubing cormector of the present invention is shown in Figures 5. 6 and 7 wherein the coiled tubing lO and 14 include a plurality of passageways 16 with each radially spaced around the wall of the coiled tubing 10 and 14. To permit separate comm--niration across the connection of the coiled tubing 10 and 14, a plurality of longitl--lin~l bores 34 are spaced radially around the cylindrical body 18. Fach such longin-din~l bore 34 is intersected by its own respective set of bores 32 radially spaced, and not longitudinally spaced as in Figures 3 and 4~ around the outer surface SUBSTITUTE SH EET (RULE 26) wo 96/18063 Pcr/uss5/1s818
Hydraulic fluid, electrical control lines and/or fiber optics are passed through the passageway 16 of the first length 10 of coiled tubing, through the bore 32, through the bore 34, through the other bore 32, and then into the passageway 16 of the second length 14 of coiled tubing. The use of the internal coiled tubing co~ e~;~ol of the preseM invention permits lengths of coiled tubing to be co.~ d and permit internal passageway Co....~ that has not been available hel.,t~ful~.
An ~ltçrn~t~ pl~Çell~d embo~lim~nt of the internal coiled tubing co~ ctor of thepresent invention is shown in Figures 3 and 4 wllc~ill the coiled tubing 10 and 14 include a plurality of passageways 16 with each radially spaced around the wall of the coiled tubing 10 and 14. To permit sep~le co--""l~ AIion across the cormection of the coiled tubing 10 and 14, a plurality of longi~-~in~l bores 34 are spaced radially around ~e cylindrical body 18.
Each such lon~itll-lin~l bore 34 is illlel~e~ d by its own lesl,eeli~e set of bores 32 longi~ in~11y spaced along the outer surface 24 of the cylindrical body 18. To prevent fluid c-)mmllnication bel~e~n the le~e~ e sets of bores 32, the outer surface 24 is provided with a plurality of recesses 26 with elastomeric annular seals 28 mounted therein. The in~t~ tion and the operation of this piel~lled embodimem of an internal coiled tubing connector of the presem invention is essemially the same as for the embodiment described above in reference to Figures 1 and 2.
An alternate pler~ d embodirnent of the internal coiled tubing cormector of the present invention is shown in Figures 5. 6 and 7 wherein the coiled tubing lO and 14 include a plurality of passageways 16 with each radially spaced around the wall of the coiled tubing 10 and 14. To permit separate comm--niration across the connection of the coiled tubing 10 and 14, a plurality of longitl--lin~l bores 34 are spaced radially around the cylindrical body 18. Fach such longin-din~l bore 34 is intersected by its own respective set of bores 32 radially spaced, and not longitudinally spaced as in Figures 3 and 4~ around the outer surface SUBSTITUTE SH EET (RULE 26) wo 96/18063 Pcr/uss5/1s818
-8-24 of the cylindrical body 18. To prevent fluid c~."",.~ ion belw~el1 the .c;~e~ e sets of bores 32, the outer surface 24 is not provided with annular recesses 26, annular O-ring seals 28 and recesses 38 (as shown in Figures 3 and 4), but is provided with a generally oval c~ o",~-lic seal 46 mounted within a respective oval recess 48 formed within the outer surface 24 of the cylindrical body 18. An oval seal 46 su~ mds each of the bores 32 to prevent any fluid leakage into and beLw~en the bores 32. Since the bores 32 with the individual oval seals 46 are spaced radially around the cylindrical body 18, this ~lt~orn~t~
plerell~d embodi nent of the coiled tubing coMector of the present invention can be made shorter in length than the embodiment shown in Figures 3 and 4. Again, the in.ct~ tion and operation of this embodiment of internal coiled tubing comleclor of the present invention is ec~nti~lly the same as that described above.
In the event that a welded conn~ction is not desired, an ~lt~rn~te plc~ cd embodiment of an internal coiled tubing coMector of the present invention can be used. As 15 shown in Figures 8 and 9, an internal coiled tubing connector 50 is comprised of a generally cylindrical sleeve 52 mounted within an annular recess 54 within an opposed pair of wedge mandrels 56. Within a beveled recess 58 in each of the wedge mandrels 56 is disposed a slip 60 adapted to contact an internal surface of the coiled tubing 10 and 14. On an inner surface of the sleeve 52 an annular rat~h~ted recess 62 is provided adjacent each end thereof, 20 cooperative with corresponding ratcheted surfaces 64 on the wedge mandrels 56. The configuration and operation of the mech~ni~m~ to connect the coiled tubing 10 and 14 can be adapted from any commercially available internai coiled tubing connector; however, it is l)lef~lled that wedge and slip mech~ni~m~ be used and most preferably of the type shown and described in U.S. Patents 5,238,273 and 5,306,050, which are commonly assigned hereto 25 and which are incorporated herein by lcfel~nce.
The sleeve 52 includes at least two spaced bores 66 extend from an outer surface 68 of the sleeve 52 partially thereinto to intersect a longit~l-lin~l bore 70 extending partially through the sleeve 52. If the longih~rlin~l bore 70 is formed by drilling, then a plug 72 of 30 suitable metallic material seals an open end of the longitudinal bore 70. The outer surface 68 SUBSTITUTE SHEET (RULE 26) ~VOg6/18063 rCTnUSgSrl5818 _9_ is provided with a counter bore at the .nte,~ecLion of the bores 66 with the outer surface 68 of the sleeve 52. Preferably, the outer surface 68 inrllldes annular recesses 74 through which the bores 66 extend into the sleeve 52. The bores 66 and the longitll~lin~l bore 70 define a by-pass passageway that provides a means for ~ c~.,....~inir~liQn belw~ell the internal passageways 16 of the coiled tubing 10 and 14 across the conn~ction The outer surface 68 of the sleeve 52 includes an annular recess 76 ~ rent a first end and ~ rent a second end thereof, and an annular e~ o",~ lic seal 68 is mounted within each recess 76. The seals 78 can be O-rings formed from any suitable el~lu",~,ic m~t~ri~l, and are preferably formed from Aflas, Viton or nitrile rubber. The seals 78 provide a fluidic seal across the outer surface 78 of the sleeve 52 when the seals 78 engage an internal surface of the lon~itll-lin~l bore within the coiled tubing 10 and 14.
When this prer~lled embodiment of internal coiled tubing comlec~or of the present invention is to be used, the internal passageways 16 within the coiled tubing 10 and 14 are cut, milled or drilled to create o~)el~illgs 80 a lj~rent the ends of the coiled tubing 10 and 14 to provide a passageway for c~"""~ r~tion into and from the internal bore of the coiled tubing 10 and 14. The first wedge and slip ~"~ch~ m 56 and 60 is inserted into the first length of coiled tubing 10 so that one of the bores 66 is spaced adjacent and in co~ llllnir~tion with opening 80 in the passageway 16 of the coiled tubing 10. Likewise, the second length 14 of coiled tubing is brought into surrounding engagement with an opposite wedge and slip m.och~ni~m 56 and 60 with the other bore 66 spaced adjacent and in commllnir~tion with the opening 80 in the passageway 16 of the second length 14 of coiled tubing.
To help ensure that the coiled tubing connector 50 is centered at the point of connection of the coiled tubing, an annular ring 82 is provided at approximately the center - line of the outer surface 68 of the sleeve 52, which is preferably the rnidway point between the tWQ longitlldin~lly spaced bores 66. The outer diameter of the ring 82 is approximately the same as the outer diameter of the coiled tubing 10 and 14 so that the sleeve 52 cannot 3(~ move withln ~e imernal bore of the coiled ~ubing 10 and 14. The ends of the coiled tubing SUBSTITUTE SH EET (RULE 26) WO g6/18063 PCI/US95/lS818 10 and 14 are then forced under com~l~ssion and then tension alternately to cause the slips 60 to be rat~h~te~i along the wedge mandrels 56 to securely grip the internal surface of the coiled tubing 10 and 14, as is described fully in U.S. Patents 5,238,273 and 5,306,050. The operation of this alternate ~r~r~ d embodiment of an internal coiled tubing col"~eclor of the present invention is essçnti~lly the same as the lJlcr~llcd embodiment described above in cr~lel-ce to Figures 1 and 2.
An ~lt~rn~te p~f~ d embodiment of the internal coiled tubing co~ e~;lor of the present invention is shown in Figures 10 and 11 wlRlein the coiled tubing 10 and 14 include a plurality of passageways 16 with each radially spaced around the wall of the coiled tubing 10 and 14. To permit se~ ale co~ n across the col~l~e~;lion of the coiled tubing 10 and 14, a plurality of lon~ihltlin~l bores 70 are spaced radially around the sleeve 52. Each such longihltlin~l bore 70 is ~ e~led by its own l~s~e~ e set of bores 66 lon~ibl~lin~lly spaced along the outer surface 68 of the sleeve 52. To prevent fluid con"ll~ ir~tion b~ween the respective sets of bores 66, the outer surface 68 is provided with a plurality of recesses 76 with elastomeric annular seals 78 mounted therein. The in~t~ tion and the operation of this ~Ç~rled embodiment of an internal coiled tubing connector of the present invention is essentially the same as for the embodiment described above in reference to Figures 1 and 2.
An alternate preferred embodiment of the internal coiled tubing connector of thepresent invention is shown in Figures 12~ 13 and 14 wherein the coiled tubing connector is comprised of two or more separate bodies with a by-pass conduit extending therebetween to provide the necessary by-pass communication. This embodiment is useful when the coiled tubing is to be bent around a relatively sharp radius that the previous internal coiled tubing conneclors would not permit. In this embodiment, the coiled tubing lO and 14 includes one or more passageways 16, and if there are more than one such passageway 16 then such passageways 16 are radially spaced around the wall of the coiled tubing 10 and 14. To permit communication across the connection of the coiled tubing 10 and 14, longitudinal bores 88 extend partially through the first and the second cylindrical bodies 84 and 86. Each such longitudinal bore 88 is intersected by a bores 90 either radially around and/or longitudinally along the ouler surface 24 of the first and the second c~ lindrical bodies 84 and 86. To prevem SUBSTITUTE SHEET (RUEE 26) W O 96/18063 ~ 35/15818 fluid communication between the bore(s) 90, the outer surface 24 of each of the first cylindrical body 84 and the second cylindrical body 86 is provided with annular recesses and annular O-ring seals, or preferably with a generally oval elastomeric seal 92 mounted within a respective oval recess 94 formed within the outer surface 24 of the first and the second cylindrical bodies 84 and 86. An oval seal 92 surrounds each of the bores 90 to prevent any fluid leakage into and between the bores 90.
A by-pass conduit 96, formed by metallic hydraulic control line or from aircraft-style hose and fitting~, is inserted into the re;,~e~Li~re longitudinal bores 88 of the first and the second cylin-lrie~l bodies 84 and 88, and is sealed therein by means of one or more ela~lo,l,c,ic annular seals 98. The gap between the first and the second spaced cylindrical bodies 84 and 86 is det~ cl by the length of the by-pass conduit 96 and a length of coiled tubing 100 that is mounted within annular notches 102 within opposed ends of the first and the second cylindrical bodies 84 and 86. The first and second cylindrical bodies 84 and 86 are welded in place as described above in reference to the embodiments shown in Figures 1 and 2 and Figures 5, 6 and 7. Additionally and preferably the coiled tubing 100 is welded to the first and the second bodies 84 and 86. Again, the operation of this alternate ~lefelled embodiments of the intçrn~l coiled tubing connector of the present invention is essentially the same as that described above in reference to Figures 1 and 2 and Figures 5, 6 and 7.
Figure 15 shows an alternate preferred embodiment of the internal coiled tubing connector of the present invention described in relation to Figures 12~ 13 and l ~. but that this embodiment uses internal wedge and slip mech~ni~m~ in place of welding, as previously described in relation to Figures 8 and 9 and Figures 10 and 11.
Whereas the present invention has been described in relation to the drawings attached hereto, it should be understood that other and further modifications, apart from those shown - or suggested herein, may be made within the scope and the spirit of the present invention.
SUBSTITUTE SHEET (RULE 26)
plerell~d embodi nent of the coiled tubing coMector of the present invention can be made shorter in length than the embodiment shown in Figures 3 and 4. Again, the in.ct~ tion and operation of this embodiment of internal coiled tubing comleclor of the present invention is ec~nti~lly the same as that described above.
In the event that a welded conn~ction is not desired, an ~lt~rn~te plc~ cd embodiment of an internal coiled tubing coMector of the present invention can be used. As 15 shown in Figures 8 and 9, an internal coiled tubing connector 50 is comprised of a generally cylindrical sleeve 52 mounted within an annular recess 54 within an opposed pair of wedge mandrels 56. Within a beveled recess 58 in each of the wedge mandrels 56 is disposed a slip 60 adapted to contact an internal surface of the coiled tubing 10 and 14. On an inner surface of the sleeve 52 an annular rat~h~ted recess 62 is provided adjacent each end thereof, 20 cooperative with corresponding ratcheted surfaces 64 on the wedge mandrels 56. The configuration and operation of the mech~ni~m~ to connect the coiled tubing 10 and 14 can be adapted from any commercially available internai coiled tubing connector; however, it is l)lef~lled that wedge and slip mech~ni~m~ be used and most preferably of the type shown and described in U.S. Patents 5,238,273 and 5,306,050, which are commonly assigned hereto 25 and which are incorporated herein by lcfel~nce.
The sleeve 52 includes at least two spaced bores 66 extend from an outer surface 68 of the sleeve 52 partially thereinto to intersect a longit~l-lin~l bore 70 extending partially through the sleeve 52. If the longih~rlin~l bore 70 is formed by drilling, then a plug 72 of 30 suitable metallic material seals an open end of the longitudinal bore 70. The outer surface 68 SUBSTITUTE SHEET (RULE 26) ~VOg6/18063 rCTnUSgSrl5818 _9_ is provided with a counter bore at the .nte,~ecLion of the bores 66 with the outer surface 68 of the sleeve 52. Preferably, the outer surface 68 inrllldes annular recesses 74 through which the bores 66 extend into the sleeve 52. The bores 66 and the longitll~lin~l bore 70 define a by-pass passageway that provides a means for ~ c~.,....~inir~liQn belw~ell the internal passageways 16 of the coiled tubing 10 and 14 across the conn~ction The outer surface 68 of the sleeve 52 includes an annular recess 76 ~ rent a first end and ~ rent a second end thereof, and an annular e~ o",~ lic seal 68 is mounted within each recess 76. The seals 78 can be O-rings formed from any suitable el~lu",~,ic m~t~ri~l, and are preferably formed from Aflas, Viton or nitrile rubber. The seals 78 provide a fluidic seal across the outer surface 78 of the sleeve 52 when the seals 78 engage an internal surface of the lon~itll-lin~l bore within the coiled tubing 10 and 14.
When this prer~lled embodiment of internal coiled tubing comlec~or of the present invention is to be used, the internal passageways 16 within the coiled tubing 10 and 14 are cut, milled or drilled to create o~)el~illgs 80 a lj~rent the ends of the coiled tubing 10 and 14 to provide a passageway for c~"""~ r~tion into and from the internal bore of the coiled tubing 10 and 14. The first wedge and slip ~"~ch~ m 56 and 60 is inserted into the first length of coiled tubing 10 so that one of the bores 66 is spaced adjacent and in co~ llllnir~tion with opening 80 in the passageway 16 of the coiled tubing 10. Likewise, the second length 14 of coiled tubing is brought into surrounding engagement with an opposite wedge and slip m.och~ni~m 56 and 60 with the other bore 66 spaced adjacent and in commllnir~tion with the opening 80 in the passageway 16 of the second length 14 of coiled tubing.
To help ensure that the coiled tubing connector 50 is centered at the point of connection of the coiled tubing, an annular ring 82 is provided at approximately the center - line of the outer surface 68 of the sleeve 52, which is preferably the rnidway point between the tWQ longitlldin~lly spaced bores 66. The outer diameter of the ring 82 is approximately the same as the outer diameter of the coiled tubing 10 and 14 so that the sleeve 52 cannot 3(~ move withln ~e imernal bore of the coiled ~ubing 10 and 14. The ends of the coiled tubing SUBSTITUTE SH EET (RULE 26) WO g6/18063 PCI/US95/lS818 10 and 14 are then forced under com~l~ssion and then tension alternately to cause the slips 60 to be rat~h~te~i along the wedge mandrels 56 to securely grip the internal surface of the coiled tubing 10 and 14, as is described fully in U.S. Patents 5,238,273 and 5,306,050. The operation of this alternate ~r~r~ d embodiment of an internal coiled tubing col"~eclor of the present invention is essçnti~lly the same as the lJlcr~llcd embodiment described above in cr~lel-ce to Figures 1 and 2.
An ~lt~rn~te p~f~ d embodiment of the internal coiled tubing co~ e~;lor of the present invention is shown in Figures 10 and 11 wlRlein the coiled tubing 10 and 14 include a plurality of passageways 16 with each radially spaced around the wall of the coiled tubing 10 and 14. To permit se~ ale co~ n across the col~l~e~;lion of the coiled tubing 10 and 14, a plurality of lon~ihltlin~l bores 70 are spaced radially around the sleeve 52. Each such longihltlin~l bore 70 is ~ e~led by its own l~s~e~ e set of bores 66 lon~ibl~lin~lly spaced along the outer surface 68 of the sleeve 52. To prevent fluid con"ll~ ir~tion b~ween the respective sets of bores 66, the outer surface 68 is provided with a plurality of recesses 76 with elastomeric annular seals 78 mounted therein. The in~t~ tion and the operation of this ~Ç~rled embodiment of an internal coiled tubing connector of the present invention is essentially the same as for the embodiment described above in reference to Figures 1 and 2.
An alternate preferred embodiment of the internal coiled tubing connector of thepresent invention is shown in Figures 12~ 13 and 14 wherein the coiled tubing connector is comprised of two or more separate bodies with a by-pass conduit extending therebetween to provide the necessary by-pass communication. This embodiment is useful when the coiled tubing is to be bent around a relatively sharp radius that the previous internal coiled tubing conneclors would not permit. In this embodiment, the coiled tubing lO and 14 includes one or more passageways 16, and if there are more than one such passageway 16 then such passageways 16 are radially spaced around the wall of the coiled tubing 10 and 14. To permit communication across the connection of the coiled tubing 10 and 14, longitudinal bores 88 extend partially through the first and the second cylindrical bodies 84 and 86. Each such longitudinal bore 88 is intersected by a bores 90 either radially around and/or longitudinally along the ouler surface 24 of the first and the second c~ lindrical bodies 84 and 86. To prevem SUBSTITUTE SHEET (RUEE 26) W O 96/18063 ~ 35/15818 fluid communication between the bore(s) 90, the outer surface 24 of each of the first cylindrical body 84 and the second cylindrical body 86 is provided with annular recesses and annular O-ring seals, or preferably with a generally oval elastomeric seal 92 mounted within a respective oval recess 94 formed within the outer surface 24 of the first and the second cylindrical bodies 84 and 86. An oval seal 92 surrounds each of the bores 90 to prevent any fluid leakage into and between the bores 90.
A by-pass conduit 96, formed by metallic hydraulic control line or from aircraft-style hose and fitting~, is inserted into the re;,~e~Li~re longitudinal bores 88 of the first and the second cylin-lrie~l bodies 84 and 88, and is sealed therein by means of one or more ela~lo,l,c,ic annular seals 98. The gap between the first and the second spaced cylindrical bodies 84 and 86 is det~ cl by the length of the by-pass conduit 96 and a length of coiled tubing 100 that is mounted within annular notches 102 within opposed ends of the first and the second cylindrical bodies 84 and 86. The first and second cylindrical bodies 84 and 86 are welded in place as described above in reference to the embodiments shown in Figures 1 and 2 and Figures 5, 6 and 7. Additionally and preferably the coiled tubing 100 is welded to the first and the second bodies 84 and 86. Again, the operation of this alternate ~lefelled embodiments of the intçrn~l coiled tubing connector of the present invention is essentially the same as that described above in reference to Figures 1 and 2 and Figures 5, 6 and 7.
Figure 15 shows an alternate preferred embodiment of the internal coiled tubing connector of the present invention described in relation to Figures 12~ 13 and l ~. but that this embodiment uses internal wedge and slip mech~ni~m~ in place of welding, as previously described in relation to Figures 8 and 9 and Figures 10 and 11.
Whereas the present invention has been described in relation to the drawings attached hereto, it should be understood that other and further modifications, apart from those shown - or suggested herein, may be made within the scope and the spirit of the present invention.
SUBSTITUTE SHEET (RULE 26)
Claims (15)
1. An internal coiled tubing connector for connecting a first length of coiled tubing having a passageway within its wall to a second length of coiled tubing having a passageway within its wall, comprising:
a cylindrical body having a longitudinal bore therethrough and adapted to be inserted into the first length and the second length of coiled tubing;
a by-pass passageway extending from a first opening in a longitudinal outer surface of the cylindrical body to a second opening in the longitudinal outer surface of the cylindrical body; and elastomeric seals mounted to the longitudinal outer surface of the cylindrical body adjacent the first opening and the second opening;
wherein when the first opening is placed in communication with a passageway within a wall of the first length of coiled tubing and when the second opening is placed in communication with a passageway within a wall of the second length of coiled tubing a communication by-pass is established across the connection of the first length and the second length of coiled tubing.
a cylindrical body having a longitudinal bore therethrough and adapted to be inserted into the first length and the second length of coiled tubing;
a by-pass passageway extending from a first opening in a longitudinal outer surface of the cylindrical body to a second opening in the longitudinal outer surface of the cylindrical body; and elastomeric seals mounted to the longitudinal outer surface of the cylindrical body adjacent the first opening and the second opening;
wherein when the first opening is placed in communication with a passageway within a wall of the first length of coiled tubing and when the second opening is placed in communication with a passageway within a wall of the second length of coiled tubing a communication by-pass is established across the connection of the first length and the second length of coiled tubing.
2. An internal coiled tubing connection of Claim 1 wherein the by-pass passageway is formed within the wall of the cylindrical body.
3. An internal coiled tubing connector of Claim 2 wherein the by-pass passagewaycomprises a longitudinal bore within a wall of the cylindrical body, with lateral bores aetending through the wall of the cylindrical body from the first opening to the longitudinal bore and from the second opening to the longitudinal bore.
4. An internal coiled tubing connector of Claim 1 wherein the longitudinal outer surface of the cylindrical body includes an annular ridge midway between the first opening and the second opening, the annular ridge having an outer diameter greater than an internal diameter of the first length and the second length of coiled tubing.
5. An internal coiled tubing connector of Claim 1 wherein the elastomeric seals are received within annular recesses within the longitudinal outer surface of the cylindrical body.
6. An internal coiled tubing connector of Claim 1 wherein the coiled tubing connector is adapted to be welded in position at the connection of the first length and the second length of coiled tubing.
7. An internal coiled tubing connector of Claim 1 and further comprising a plurality of separate by-pass passageways extending from separate first openings in the cylindrical body to separate second openings in the cylindrical body, each such by-pass passageway to establish communication by-passes with corresponding separate passageways within the walls of the first length and the second length of coiled tubing.
8. An internal coiled tubing connector of Claim 7 wherein the plurality of separate first openings and second openings are radially spaced around the cylindrical body.
9. An internal coiled tubing connector of Claim 8 wherein the plurality of separate first openings and second openings are longitudinally spaced along and radially spaced around the cylindrical body.
10. An internal coiled tubing connector of claim 9 wherein elastomeric seals surround each of the first openings and each of the second openings.
11. An internal coiled tubing connector of Claim 1 and further comprising a first wedge and slip mechanism mounted adjacent a first end of the cylindrical body and a second wedge and slip mechanism mounted adjacent a second end of the cylindrical body, the first and the second wedge and slip mechanisms adapted to connect the first length and the second length of coiled tubing.
12. An internal coiled tubing connector of Claim 11 wherein the first and the second wedge and slip mechanisms each include a ratchet means for ratcheting the wedges into wedging engagement with the slips upon alternate application of tension and compression to grip an internal surface of the first length and the second length of coiled tubing.
13. An internal coiled tubing connector for connecting a first length of coiled tubing having a passageway within its wall to a second length of coiled tubing having a passageway within its wall, comprising:
a cylindrical body having a longitudinal bore therethrough and adapted to be inserted into the first length and the second length of coiled tubing, a first wedge and slip mechanism mounted adjacent a first end of the cylindrical body and a second wedge and slip mechanism mounted adjacent a second end of the cylindrical body, the first and the second wedge and slip mechanisms adapted to connect the first length and the second length of coiled tubing;
a by-pass passageway extending from a first opening in a longitudinal outer surface of the cylindrical body to a second opening in the longitudinal outer surface of the cylindrical body; and elastomeric seals mounted to the longitudinal outer surface of the cylindrical body adjacent the first opening and the second opening;
wherein when the first opening is placed in communication with a passageway within a wall of the first length of coiled tubing and when the second opening is placed in communication with a passageway within a wall of the second length of coiled tubing a communication by-pass is established across the connection of the first length and the second length of coiled tubing.
a cylindrical body having a longitudinal bore therethrough and adapted to be inserted into the first length and the second length of coiled tubing, a first wedge and slip mechanism mounted adjacent a first end of the cylindrical body and a second wedge and slip mechanism mounted adjacent a second end of the cylindrical body, the first and the second wedge and slip mechanisms adapted to connect the first length and the second length of coiled tubing;
a by-pass passageway extending from a first opening in a longitudinal outer surface of the cylindrical body to a second opening in the longitudinal outer surface of the cylindrical body; and elastomeric seals mounted to the longitudinal outer surface of the cylindrical body adjacent the first opening and the second opening;
wherein when the first opening is placed in communication with a passageway within a wall of the first length of coiled tubing and when the second opening is placed in communication with a passageway within a wall of the second length of coiled tubing a communication by-pass is established across the connection of the first length and the second length of coiled tubing.
14. An internal coiled tubing connector for connecting a first length of coiled tubing having a passageway within its wall to a second length of coiled tubing having a passageway within its wall, comprising:
a first cylindrical body having a longitudinal bore therethrough and adapted to be inserted into the first length of coiled tubing, a second cylindrical body having a longitudinal bore therethrough and adapted to be inserted into the second length of coiled tubing;
a by-pass passageway extending from a first opening in a longitudinal outer surface of the first cylindrical body to a second opening in the longitudinal outer surfaceof the second cylindrical body; and elastomeric seals mounted to the longitudinal outer surface of the first and the second cylindrical bodies on opposite side of the first opening and the second opening;
wherein when the first opening is placed in communication with a passageway within a wall of the first length of coiled tubing and when the second opening is placed in communication with a passageway within a wall of the second length of coiled tubing a communication by-pass is established across the connection of the first length and the second length of coiled tubing.
a first cylindrical body having a longitudinal bore therethrough and adapted to be inserted into the first length of coiled tubing, a second cylindrical body having a longitudinal bore therethrough and adapted to be inserted into the second length of coiled tubing;
a by-pass passageway extending from a first opening in a longitudinal outer surface of the first cylindrical body to a second opening in the longitudinal outer surfaceof the second cylindrical body; and elastomeric seals mounted to the longitudinal outer surface of the first and the second cylindrical bodies on opposite side of the first opening and the second opening;
wherein when the first opening is placed in communication with a passageway within a wall of the first length of coiled tubing and when the second opening is placed in communication with a passageway within a wall of the second length of coiled tubing a communication by-pass is established across the connection of the first length and the second length of coiled tubing.
15. An internal coiled tubing connector of Claim 14 and further comprising a first wedge and slip mechanism mounted adjacent a first end of the first cylindrical body and a second wedge and slip mechanism mounted adjacent a second end of the second cylindrical body, the first and second wedge and slip mechanisms adapted to connect the first length and the second length of coiled tubing.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/349,913 | 1994-12-06 | ||
| US08/349,913 US5524937A (en) | 1994-12-06 | 1994-12-06 | Internal coiled tubing connector |
| PCT/US1995/015818 WO1996018063A1 (en) | 1994-12-06 | 1995-12-06 | Internal coiled tubing connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2203690A1 true CA2203690A1 (en) | 1996-06-13 |
Family
ID=29405900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2203690 Abandoned CA2203690A1 (en) | 1994-12-06 | 1995-12-06 | Internal coiled tubing connector |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2203690A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429205A (en) * | 2018-03-29 | 2018-08-21 | 威海纳川管材有限公司 | A kind of Intelligent Composite flexible pipe joint end protective cover |
-
1995
- 1995-12-06 CA CA 2203690 patent/CA2203690A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429205A (en) * | 2018-03-29 | 2018-08-21 | 威海纳川管材有限公司 | A kind of Intelligent Composite flexible pipe joint end protective cover |
| CN108429205B (en) * | 2018-03-29 | 2024-01-23 | 威海纳川管材有限公司 | Intelligent composite flexible pipe joint sheath |
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