GB2283035A - Coiled tubing with signal transmitting passageway - Google Patents
Coiled tubing with signal transmitting passageway Download PDFInfo
- Publication number
- GB2283035A GB2283035A GB9419587A GB9419587A GB2283035A GB 2283035 A GB2283035 A GB 2283035A GB 9419587 A GB9419587 A GB 9419587A GB 9419587 A GB9419587 A GB 9419587A GB 2283035 A GB2283035 A GB 2283035A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coiled tubing
- wall
- signal transmitting
- passageway
- signal
- 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
Links
- 239000000835 fiber Substances 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 101150073426 Ctsj gene Proteins 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229920013632 Ryton Polymers 0.000 description 1
- 239000004736 Ryton® Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4416—Heterogeneous cables
-
- 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
- E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
- E21B17/206—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables with conductors, e.g. electrical, optical
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4427—Pressure resistant cables, e.g. undersea cables
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Earth Drilling (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Communication Cables (AREA)
Abstract
Coiled tubing 12a includes a signal transmitting passageway 36 or 38 for transmitting and/or receiving signals to well tools positioned in the coiled tubing. The signal transmitting passageway may transmit and receive hydraulic, electrical or light signals and the signals may be used for transmitting power signals for actuating well tools, control signals for controlling well tools, and/or data signals for transmitting or receiving information. The signal transmitting passageway is either built into the wall of the coil tubing as shown, located in the annular space between concentric coil tubes, or encapsulated in a resin surrounding the tubing. <IMAGE>
Description
COILED TUBING WITH SIGNAL TRANSMITTING PASSAGEWAY
Cross-Reference to Related Applications
The present invention is a continuation in part of Application Serial
No. 08/142,637, filed October 25, 1993, entitled Coiled Tubing With
Control Conduit and Manufacture Thereof.
Background of the Invention
The present invention is directed to the combination of a coiled tubing and a signal transmitting passageway for transmitting and/or receiving signals to well tools positioned in the coiled tubing. The signal transmitting passageway may transmit and receive hydraulic, electrical, or light signals and the signals may be used for transmitting power signals for actuating well tools, control signals for controlling well tools, and/or data signals for transmitting and/or receiving information.The signal transmitting passageway is positioned adjacent the wall of the coiled tubing and out of the center of the bore of the coiled tubing for avoiding interference with passage of equipment through the coiled tubing, and in addition, the signal transmitting passageway does not create any protuberances on the exterior of the coiled tubing which would interfere with its passage through wellhead injectors.
Coiled tubing is utilized in oil and/or gas wells by being reeled into and out of a production tubing string for performing many types of operations. In addition, using various types of well tools in a coiled tubing requires a signal transmitting signal passageway, conduit or line, to be utilized either outside or inside of the coiled tubing, such as disclosed in
United States Patent Nos. 4,844,166 and 5,285,851. However, such a coiled tubing and signal transmitting passageway must be flexible so as to be spoolable on a coiled tubing reel and is also important that the bore of the coiled tubing be clear to allow the passage of required wireline tools therethrough such as bottom hole survey or temperature tools.
However, prior outside signal transmitting passageways, such as hydraulic lines, are undesirable and subject to being damaged on being injected through wellhead equipment. Prior inside positioned signal transmitting passageways, such as hydraulic and electrical lines, are free flowing and coiled for specific lengths to accommodate expansion and contraction and therefore interfere with the passage of other well tools therethrough. These problems increase in those spoolable well completions wherein it is desired to run more than one signal transmitting passageway in combination with coiled tubing.
The present invention is directed to various embodiments of a combination of coiled tubing and signal transmitting passageway which will maintain the passageway out of the center of the bore of the coiled tubing thereby allowing free passage of other well tools through the bore, but still providing a flexible and spoolable combination which will readily pass through wellhead injectors by providing a smooth exterior on the coiled tubing and may be capable of transmitting various types of signals such as hydraulic, electrical, and optical.
Summary
One object of the present invention is the provision of a combination of a coiled tubing and a signal transmitting passageway for transmitting and/or receiving signals to well tools positioned in the coiled tubing. The flexible coiled tubing includes an outer wall, an inner wall, and a bore therethrough and is adapted to support at least one signal actuated well tool therein. The coiled tubing includes at least one signal transmitting passageway positioned in the coiled tubing between the inner wall and the outer wall. In one embodiment, at least two separate signal transmitting passageways are positioned between the inner wall and the outer wall. The signal transmitting passageway may be adapted to conduct hydraulic fluid, electrical signals, or light signals.
Yet a further object of the present invention is wherein the signal transmitting passageway is positioned approximately midway between the inner wall and the outer wall.
In another embodiment, the signal transmitting passageway is positioned against the outer wall of the coiled tubing. In one embodiment the signal transmitting means is bonded in the passageway.
A still further object of the present invention is wherein the signal transmitting passageway extends from the outer wall towards the inner wall and the cross-sectional area at the outer wall is less than the crosssectional area of the passageway whereby the signal transmitting means may be securely held in the passageway.
Still a further object of the present invention is the provision of one or more protective ribs extending transversely to the outer wall between adjacent signal passageways for protection of the passageways.
A still further object of the present invention is the provision of a combination of a coiled tubing and a signal transmitting passageway for transmitting and/or receiving signals to well tools positioned in the coiled tubing in which a flexible coiled tubing having an outer wall, an inner wall, and a bore therethrough is adapted to support at least one signal actuated well tool having a bore in communication with the bore of the coiled tubing. An annular signal transmitting passageway is formed between the inner wall and the outside of a concentric tube coaxially positioned in the inside of the coiled tubing. In one embodiment the signal transmitting annular passageway is formed to conduct hydraulic fluid.
Yet a further object of the present invention is the provision of a combination of a coiled tubing and a signal transmitting passageway for transmitting and/or receiving signals to well tools positioned in the coiled tubing. A flexible coiled tubing having an outer wall, an inner wall, and a bore therethrough is adapted to support at least one signal actuated well tool having a bore in communication with the bore of the coiled tubing.
A signal transmitting passageway is formed by circularly wrapping a conduit around the outside of the outer wall of the coiled tubing and encapsulated with a coating providing a smooth outer circumference. In one embodiment, more than one conduit is circularly wrapped around the exterior of the outer wall of the coiled tubing.
Other and further objects, features and advantages will be apparent from the following description of presently preferred embodiments, given for the purpose of disclosure, and taken in conjunction with the accompanying drawings where like character references designate like parts throughout the several views.
Brief Description of the Drawings
Fig. 1 is an elevational view, in cross section, of a portion of a spoolable well completion system utilizing the combination of a coiled tubing and a signal transmitting passageway, here shown as a hydraulic control passageway, of the present invention,
Fig. 2 is a cross-sectional view taken along the line 2-2 of Fig. 1,
Fig. 3 is an elevational view of a flat metal plate showing the first step in the manufacture of the combination coiled tubing and signal transmitting passageway of Fig. 1,
Fig. 4 is a cross-sectional view similar to Fig. 2 illustrating the use of a combination of hydraulic signal passageways, electrical signal passageway, and a fiber optic signal passageway in the wall of a coiled tubing,
Fig. 4A is an enlarged cross-sectional view of one of the signal transmitting passageways of Fig. 4,
Fig. 4B is an enlarged cross-sectional view of another of the signal transmitting passageways of Fig. 4,
Fig. 5 is an enlarged fragmentary cross-sectional view of another embodiment of a signal transmitting passageway in the wall of a coiled tubing,
Fig. 6 is an enlarged fragmentary cross-sectional view of another embodiment of a signal transmitting passageway in the wall of a coiled tubing,
Fig. 7 is a fragmentary cross-sectional view of still a further embodiment of the placement of a plurality of signal transmitting passageways within the wall of a coiled tubing,
Fig. 8 is a fragmentary cross-sectional view of a further embodiment of a signal transmitting passageway in the wall of a coiled tubing,
Fig. 9 is a fragmentary cross-sectional view of yet a further placement of a signal transmitting means in the wall of a coiled tubing,
Fig. 10 is an elevational view, in cross section, of another embodiment of the combination of a coiled tubing and a signal transmitting passageway,
Fig. 11 is a cross-sectional view taken along the line 11-11 of Fig.
10,
Fig. 12 is an elevational view, in cross section, of still a further embodiment of the present invention, and
Fig. 13 is a cross-sectional view, taken along the line 13-13, of Fig.
12.
Description of the Preferred Embodiments
Referring now to the drawings, and particularly to Figs. 1 and 2, the reference numeral 10 generally indicates a portion of a spoolable well completion system and generally includes coiled tubing 12 having one or more signal transmitting passageways such as hydraulic control conduits, passageways, or lines 14 and 14a (Fig. 2) for hydraulically controlling one or more well tools positioned in the coiled tubing, such as a hydraulically actuated well tool 16. The hydraulically actuated well tool 16 may be any suitable well tool, such as Camco Model CTSP hydraulically actuated well safety valve. The coiled tubing 12 includes a wall 15 having an inner wall 17, an outer wall 19, and a coaxial bore 13 therethrough.The completion system 10 may include various other types of well tools, such as sliding sleeves, gas lift valves, and other tools (not shown).
As previously discussed, the use of hydraulic or electrical control lines for actuating electrical or hydraulically operated well tools have been provided by utilizing separate electrical or hydraulic lines on either the outside of the coiled tubing 12 or on the inside of the coiled tubing 12.
Signal transmitting passageways, conduits or lines on the outside of the coiled tubing 12 present problems in sealing against the outer wall 19 of the coiled tubing 12 while inserting the coiled tubing 12 into a well through conventional wellhead equipment, such as an injector head.
Placing the signal transmitting signal line inside the coiled tubing creates a free floating and coiled line allowing for expansion and contraction, but which interferes with the open bore 13 in the coiled tubing 12. That is, it is desirable to pass other well tools, such as bottom hole survey or temperature tools, downwardly through the bore 13 of the coiled tubing 12, such as on wireline systems. In such an event, it is desired that the coaxial longitudinal bore 13, particularly along the longitudinal axis be free of obstructions.The hydraulic control lines 14 and/or 14a in the embodiment of Figs. 1 and 2 provide a hydraulic signal transmitting passageway or lines within the wall 15 of the coiled tubing between the inner wall 17 and the outer wall 19 which is particularly advantageous as it does not interfere with the spoolability of the coiled tubing 12, does not create any upsets or protuberances on the outside for outer wall 19 of the coiled tubing 12, nor does it interfere with the passage of wireline tools through the coaxial bore 13 of the coiled tubing 12. As illustrated, the hydraulic signal passageway 14 is utilized to provide hydraulic control fluid to the well safety valve 16 for opening and closing the safety valve.
The second hydraulic signal passageway 14a (Fig. 2) may be run longitudinally downwardly within the wall 15 and through the coiled tubing 12 to operate other types of well tools (not shown).
Referring now to Fig. 3, one method of manufacturing the coiled tubing 12 along with the signal transmitting passageways 14 and 14a of
Figs. 1A-1C and 2, is best seen in Fig. 3, in which a flat elongate metal plate 20 having an end 22 and first and second edges 24 and 26 is shown in end view. A single groove 30 or an additional groove 30a, providing one passageway or two passageways, may be provided in the edges 24 and 26, respectively. The plate 20 is then rolled in the form of a circle around its longitudinal axis, and, as best seen in Fig. 2, a longitudinal weld 28 is used to weld the edges 24 and 26 together. The weld 28 provides a barrier between the grooves 30 and 30a thereby forming passageways 14 and 14a.
Of course, the lengths of the passageways 14 and 14a may be of any desired length and may be different from each other as required for the particular well completion system 10. The top of the passageways 14 and 14a thus extend into a wellhead (not shown) for supplying the desired hydraulic control fluid to the passageways 14 and 14a.
Other and further embodiments may be provided as hereinafter described were like parts to those shown in Figs. lA-lC and 2 will be similarly numbered with the addition of the suffix "a", 'b", "c", "d", "e", "f', "g" and "h".
Referring now to Figs. 4, 4A and 4B, a plurality of different signal transmittingpassageways are provided within the wall of the coiled tubing 12a between the inner wall 17a and the outer wall 19a. Hydraulic passageways 32 and 34 are provided, a fiber optic passageway 36 is provided and an electrical signal transmitting passageway 38 is provided.
As best seen in Fig. 4A, the fiber optic cable 36 consists of a plurality of fiber optic lines 40 enclosed within a suitable insulation 42. As best seen in Fig. 4B, the electrical line may include a flat ribbon wire 44 enclosed with a suitable insulation 46. Thus, various data and power transmitting signals may be conducted through the wall 15a of the coiled tubing 12a to various downhole well tools (not shown).
Referring to Fig. 5, another embodiment is shown in which a signal transmitting passageway 14b is formed between the inner wall 17b and the outer wall 19b of a coiled tubing 12b by cutting a portion of the outer wall 19b longitudinally out of the exterior of the coiled tubing 12b. The passageway 14b is then formed by placing a closure plate 50 therein such as by welds 52 extending along the edges of the closure plate 50. While, of course, the passageway 14b may be left empty for conducting hydraulic fluid therethrough other types of signal transmitting means may be inserted in the passageway 14b, such as means 54 in which the signal transmitting elements 56 may be fiber optic cables or multiple strands of electrical wire.
In Fig. 6, a closure plate 50c is welded into the outer wall 19c of a coiled tubing 12c enclosing a fiber optic bundle 58.
Referring to Fig. 7, a closure plate 50d encloses a plurality of passageways 14d which are separated from each other by protective ribs 60. Various types of signal transmitting means 58d may be provided in the individual passageways 14d, such as single electrical wires or fiber optic lines.
Referring now to Fig. 8, the signal transmitting passageways 14e are positioned against the outer wall 19e of the coiled tubing 12e and extend from the outer wall 19e inwardly. In the event that a plurality of passageways 14e are desired a protective rib 60e is provided between adjacent passageways 14e for protecting the signal transmitting means 58e. The transmitting means 58e are preferably enclosed by a suitable rubber filler 62 which is bonded and holds the transmitting means 58e in place in the passages 14e by being bonded therein.
Referring to Fig. 9, a signal transmitting passageway 14f extends from the outer wall 19f towards the inner wall 17f of the coiled tubing 12f.
The cross-sectional area 64 at the outer wall 19f is less than other crosssectional areas of the passageway 14f whereby the signal transmitting means 58f may be held in the passageway 14f. The signal transmitting means 58f may include any suitable signal means, such as electrical lines or fiber optic lines which are covered by a plastic cover 68. The shape of the passageway 14f allows the signal transmitting means 58f to be inexpensively snapped into place in the passageway 14f and securely held therein.
Referring now to Figs. 10 and 11, a spoolable well completion system 10g is shown having a coiled tubing 12g, a hydraulic signal transmitting passageway conduit or line 70 for supplying hydraulic fluid to a hydraulically actuated well tool, such as safety valve 16g. The signal transmitting passageway 70 is a concentric annulus which is provided between the inside diameter of wall 17g of the coiled tubing 12g and the outside diameter 72 of a tubular member 74 which is concentrically positioned inside of the coiled tubing 12g. Again, the concentric annulus hydraulic signal passageway 70 meets the desired criteria of not being outside of the wall 15g and not interfering with the coaxial passage of well tools through the bore 13g which is in communication with the bore 76 of the well tool 16g.
Referring to another embodiment, as best seen in Figs. 12 and 13, a coiled tubing 12h is provided having a slightly reduced internal diameter 17h which provides for an open bore 13h therethrough. In this embodiment, one or more hydraulic signal transmitting passageways, conduits or lines 80 and 80a are helically wound around the outside diameter 19h of the coiled tubing 12h. The circular wrapping of the hydraulic passageways 80 and 82 provides added strength to the structure.
The circular wrapped controlled lines 80 and 82 are then encapsulated with an outer cover 84 made out of a suitable strength providing plastic cover made of any suitable material, such as PEEK fiber composite or
Ryton "PPS" (polyphenylene sulfide), long fiber reinforced composite, the cover 84 provides a smooth exterior with a non-upset circumference which will readily pass through an injector in a wellhead and at the same time will protect the control lines 80 and 82 from damage while also providing the necessary strength for gripping by hanging means for supporting the coiled tubing 12h.
The present invention, therefore, is well adapted to carry out the objects and attain the ends and advantages mentioned as well as others inherent therein. While presently preferred embodiments ofthe invention have been given for the purpose of disclosure, numerous changes in the details of construction and arrangement of parts, will readily suggest themselves to those skilled in the art, and which are encompassed within the spirit of the invention and the scope of the appended claims.
What is claimed is:
Claims (15)
1. A combination of a coiled tubing and a signal transmitting passageway for transmitting and/or receiving signals to well tools positioned in the coiled tubing comprising,
a flexible coiled tubing having an outer wall, an inner
wall, and a bore therethrough and adapted to support at
least one signal actuated well tool therein, and
said coiled tubing having at least one signal
transmitting passageway positioned in the coiled tubing
between the inner wall and the outer wall.
2. The apparatus of claim 2 wherein at least two separate signal transmitting passageways are positioned between the inner wall and the outer wall.
3. The apparatus of claim 2 including,
a protective rib extending transversely relative to the
outer wall between adjacent passageways for protection of
the passageways.
4. The apparatus of claim 1 wherein the signal transmitting passageways is formed to conduct hydraulic fluid.
5. The apparatus of claim 1 wherein the signal transmitting passageway includes an electrical wire.
6. The apparatus of claim 1 wherein the signal transmitting passageway includes a fiber optic cable.
7. The apparatus of claim 1 wherein the signal transmitting passageway is positioned approximately midway between the inner wall and the outer wall.
8. The apparatus of claim 1 wherein the signal transmitting passageway is positioned against the outer wall of the coiled tubing.
9. The apparatus of claim 8 wherein signal transmitting means is bonded in the passageway.
10. The apparatus of claim 8 wherein the signal transmitting passageway extends from the outer wall toward the inner wall and the cross-sectional area at the outer wall is less than other cross-sectional areas of the passageway whereby signal transmitting means may be held in the passageway.
11. A combination of a coiled tubing, and a signal transmitting passageway for transmitting and/or receiving signals to well tools positioned in the coiled tubing comprising,
a flexible coiled tubing having an outer wall, an inner
wall, and a bore therethrough and adapted to support at
least one signal actuated well tool having a bore in
communication with the bore of the coiled tubing, and
an annular signal transmitting passageway formed
between the inner wall and the outside of a concentric tube
coaxially positioned in the inside of the coiled tubing.
12. The apparatus of claim 11 wherein the signal transmitting passageway is formed to conduct hydraulic fluid for actuating said well tool.
13. A combination of a coiled tubing, and a signal transmitting passageway for transmitting and/or receiving signals to well tools positioned in the coiled tubing comprising,
a flexible coiled tubing having an outer wall, an inner
wall, and a bore therethrough and adapted to support at
least one signal actuated well tool having a bore in
communication with the bore of the coiled tubing, and
a signal transmitting passageway formed by circularly
wrapping a conduit around the outside of the outer wall of
the coiled tubing and encapsulated with a coating providing
a smooth outer circumference.
14. The apparatus of claim 13 including more than one conduit circularly wrapped around the outside of the outer wall of the coiled tubing.
15. Apparatus substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/142,733 US5373898A (en) | 1992-10-20 | 1993-10-25 | Rotary piston well tool |
| US30076194A | 1994-09-08 | 1994-09-08 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9419587D0 GB9419587D0 (en) | 1994-11-16 |
| GB2283035A true GB2283035A (en) | 1995-04-26 |
| GB2283035B GB2283035B (en) | 1997-08-06 |
Family
ID=26840380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9419587A Expired - Fee Related GB2283035B (en) | 1993-10-25 | 1994-09-29 | Coiled tubing with signal transmitting passageway |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2283035B (en) |
| NO (1) | NO312854B1 (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996009561A1 (en) * | 1994-09-21 | 1996-03-28 | Sensor Dynamics Limited | Apparatus for sensor location |
| GB2314363B (en) * | 1995-02-27 | 1999-03-31 | Camco Int | Metal coiled tubing with signal transmitting passageway |
| GB2354782A (en) * | 1999-08-17 | 2001-04-04 | Baker Hughes Inc | Fibre optic monitoring of sand control equipment |
| GB2355740A (en) * | 1999-09-23 | 2001-05-02 | Baker Hughes Inc | A downhole fibre optic protection system |
| EP1143104A1 (en) * | 2000-04-03 | 2001-10-10 | Airborne Development B.V. | A composite tube with embedded power conductors |
| GB2421748A (en) * | 1999-01-04 | 2006-07-05 | Weatherford Lamb | A method and apparatus for conveying and operating tools into a wellbore. |
| WO2008075238A1 (en) * | 2006-12-18 | 2008-06-26 | Schlumberger Canada Limited | System and method for sensing a parameter in a wellbore |
| WO2018052699A1 (en) * | 2016-08-31 | 2018-03-22 | Saudi Arabian Oil Company | Fiber reinforced and powered coil tubing |
| US11371326B2 (en) | 2020-06-01 | 2022-06-28 | Saudi Arabian Oil Company | Downhole pump with switched reluctance motor |
| US11499563B2 (en) | 2020-08-24 | 2022-11-15 | Saudi Arabian Oil Company | Self-balancing thrust disk |
| US11591899B2 (en) | 2021-04-05 | 2023-02-28 | Saudi Arabian Oil Company | Wellbore density meter using a rotor and diffuser |
| US11644351B2 (en) | 2021-03-19 | 2023-05-09 | Saudi Arabian Oil Company | Multiphase flow and salinity meter with dual opposite handed helical resonators |
| US11913464B2 (en) | 2021-04-15 | 2024-02-27 | Saudi Arabian Oil Company | Lubricating an electric submersible pump |
| US11920469B2 (en) | 2020-09-08 | 2024-03-05 | Saudi Arabian Oil Company | Determining fluid parameters |
| US11994016B2 (en) | 2021-12-09 | 2024-05-28 | Saudi Arabian Oil Company | Downhole phase separation in deviated wells |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463814A (en) * | 1982-11-26 | 1984-08-07 | Advanced Drilling Corporation | Down-hole drilling apparatus |
| US5184682A (en) * | 1988-05-20 | 1993-02-09 | Jacques Delacour | Device allowing measurements or interventions to be carried out in a well, method using the device and applications of the device |
| US5285204A (en) * | 1992-07-23 | 1994-02-08 | Conoco Inc. | Coil tubing string and downhole generator |
-
1994
- 1994-09-29 GB GB9419587A patent/GB2283035B/en not_active Expired - Fee Related
- 1994-10-24 NO NO19944043A patent/NO312854B1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463814A (en) * | 1982-11-26 | 1984-08-07 | Advanced Drilling Corporation | Down-hole drilling apparatus |
| US5184682A (en) * | 1988-05-20 | 1993-02-09 | Jacques Delacour | Device allowing measurements or interventions to be carried out in a well, method using the device and applications of the device |
| US5285204A (en) * | 1992-07-23 | 1994-02-08 | Conoco Inc. | Coil tubing string and downhole generator |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996009561A1 (en) * | 1994-09-21 | 1996-03-28 | Sensor Dynamics Limited | Apparatus for sensor location |
| GB2314363B (en) * | 1995-02-27 | 1999-03-31 | Camco Int | Metal coiled tubing with signal transmitting passageway |
| GB2421748A (en) * | 1999-01-04 | 2006-07-05 | Weatherford Lamb | A method and apparatus for conveying and operating tools into a wellbore. |
| GB2354782A (en) * | 1999-08-17 | 2001-04-04 | Baker Hughes Inc | Fibre optic monitoring of sand control equipment |
| GB2355740B (en) * | 1999-09-23 | 2004-04-07 | Baker Hughes Inc | Protector system for fiber optic system components in subsurface applications |
| GB2355740A (en) * | 1999-09-23 | 2001-05-02 | Baker Hughes Inc | A downhole fibre optic protection system |
| US6571046B1 (en) | 1999-09-23 | 2003-05-27 | Baker Hughes Incorporated | Protector system for fiber optic system components in subsurface applications |
| EP1143104A1 (en) * | 2000-04-03 | 2001-10-10 | Airborne Development B.V. | A composite tube with embedded power conductors |
| WO2001075263A1 (en) * | 2000-04-03 | 2001-10-11 | Airborne Development B.V. | A composite tube with embedded power conductors |
| WO2008075238A1 (en) * | 2006-12-18 | 2008-06-26 | Schlumberger Canada Limited | System and method for sensing a parameter in a wellbore |
| WO2018052699A1 (en) * | 2016-08-31 | 2018-03-22 | Saudi Arabian Oil Company | Fiber reinforced and powered coil tubing |
| US10844673B2 (en) | 2016-08-31 | 2020-11-24 | Saudi Arabian Oil Company | Fiber reinforced and powered coil tubing |
| US11371326B2 (en) | 2020-06-01 | 2022-06-28 | Saudi Arabian Oil Company | Downhole pump with switched reluctance motor |
| US11499563B2 (en) | 2020-08-24 | 2022-11-15 | Saudi Arabian Oil Company | Self-balancing thrust disk |
| US11920469B2 (en) | 2020-09-08 | 2024-03-05 | Saudi Arabian Oil Company | Determining fluid parameters |
| US11644351B2 (en) | 2021-03-19 | 2023-05-09 | Saudi Arabian Oil Company | Multiphase flow and salinity meter with dual opposite handed helical resonators |
| US11591899B2 (en) | 2021-04-05 | 2023-02-28 | Saudi Arabian Oil Company | Wellbore density meter using a rotor and diffuser |
| US11913464B2 (en) | 2021-04-15 | 2024-02-27 | Saudi Arabian Oil Company | Lubricating an electric submersible pump |
| US11994016B2 (en) | 2021-12-09 | 2024-05-28 | Saudi Arabian Oil Company | Downhole phase separation in deviated wells |
Also Published As
| Publication number | Publication date |
|---|---|
| NO312854B1 (en) | 2002-07-08 |
| NO944043L (en) | 1995-04-26 |
| NO944043D0 (en) | 1994-10-24 |
| GB2283035B (en) | 1997-08-06 |
| GB9419587D0 (en) | 1994-11-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20030929 |