GB2179017A - Umbilical communication between two bodies - Google Patents
Umbilical communication between two bodies Download PDFInfo
- Publication number
- GB2179017A GB2179017A GB08518226A GB8518226A GB2179017A GB 2179017 A GB2179017 A GB 2179017A GB 08518226 A GB08518226 A GB 08518226A GB 8518226 A GB8518226 A GB 8518226A GB 2179017 A GB2179017 A GB 2179017A
- Authority
- GB
- United Kingdom
- Prior art keywords
- umbilical
- jumper
- reel
- length
- umbilical member
- 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.)
- Withdrawn
Links
- 238000004891 communication Methods 0.000 title claims abstract description 78
- 230000008878 coupling Effects 0.000 claims abstract description 34
- 238000010168 coupling process Methods 0.000 claims abstract description 34
- 238000005859 coupling reaction Methods 0.000 claims abstract description 34
- 238000003860 storage Methods 0.000 claims abstract description 28
- 238000000151 deposition Methods 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
- H02G1/10—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle in or under water
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
An umbilical communication system between two bodies 21, 22 includes a flexible umbilical member 23 connected a tone end 24 to body 21. The other end of the umbilical member 23 is joined by coupling means 28 and a more flexible jumper umbilical to the body 22 providing umbilical connection between communication channels on the two bodies. A preset length of the composite umbilical member and jumper umbilical, including the coupling means 28, is wound on a rotatable support reel 27. A portion 29' of the jumper umbilical is wound in the opposite rotational sense to the umiblical member (or same rotational sense (Figure 3)) and passes to the body by way of a storage region 35. The support reel 27 is rotatable by motor 33 to charge the length of umbilical member on the reel without breaking umbilical connection by depositing into, or with drawing from, the storage region 35, which may simply be a cleared area of deck, a corresponding length of the more flexible jumper umbilical. The coupling means may be attached to the reel to provide an anchor point for both umbilicals and to prevent tension being transmitted to the jumper umbilical which is designed for flexibility rather than strength. <IMAGE>
Description
SPECIFICATION
Umbilical communication between two bodies
This invention relates to the communication between two bodies each including a plurality of communication channels by way of a connecting umbilical member having a corresponding number of communication channels therein. In particular the invention relates to varying the length of umbilical member deployed between the bodies whilst maintaining connection between the communication channels.
The bodies with which the present invention is particularly, but not exclusively, concerned are components of an off-shore oil or gas installation such as a surface vessel and a sub-sea control structure to which power and control signals are fed by way of a flexible umbilical member. The communication channels of such an installation include electrical cables for the provision of electrical power or transmission of control signals, possibly optical cables for the transmission of control signals, and hydraulic and/or pneumatic hoses for the transmission of pressurised power or control fluids.
The term communication channel is used for convenience for any such channel irrespective of its character or function.
Where there is relative movement between the two bodies. it is necessary for the length of umbilical deployed to vary with, or exceed, the separation between them and it is often desirable at some point in operation to take up an excess length of deployed umbilical member. which excess length is usually small in comparison with the nominal separation.
One example of a communication system between two bodies is shown in the accompanying Figure 1.
The bodies are provided by a sub-sea control structure 10 and a surface vessel 11 stationed above it but subject to relative reciprocating displacement with wave motion, principally heave, in the direction indicated by arrowed line 12.
A control umbilical 13 is suspended from deployment means 14 of the vessel and extends to the control structure connecting communication channels in which the vessel and structure. To permit connection to be maintained at high heave amplitudes the umbilical 13 is freely deployed, that is, a deployed length, in excess of the separation along a straight line separation axis 15 between deployment means and structure, hangs from a a fixed "high amplitude" support 16 and the vessel motion is accommodated by tautening and slacking of the deployed umbilical member by vessel movement. The excess deployment length occupies an ill-defined deployment envelope indicated by broken lines 17 which by its lateral extent inhibits the lowering of devices or other equipment from the vessel to the control station in low amplitude heave conditions in a so-called work-over operation.
To permit such work-over operation the deployment means 14 also includes low amplitude support means 18 which supports the unbilical at a point 19 along its length between the high amplitude support and the structure. The low amplitude support includes a constant tension device which raises and lowers the support point to compensate for vessel motion and maintains a substantially constant tension in the umbilical member which is deployed as shown by the dotted line 13', with little excess length and constrained by the tension therein to define a much smaller tensioned-umbilical deployment envelope indicated by chain-dotted lines 20, making it possible to lower lines from the vessel to the structure without them entering the tensioned-umbilical deployment envelope and risking entanglement with the umbilical member.
To change between the high and low-amplitude operating modes it is necessary to withdraw or deploy the excess length of umbilical member between the support point 19 and high amplitude support 16 without breaking the communication channels it provides.
A further complication which exists in this and many other installations in which an umbilical member is deployed between two bodies is that the freely deployed length may be of the order of 200 metres and the high amplitude support means must take the tension therein imposed by relative body movements and as in this case by the weight of umbilical member itself. Furthermore the umbilical member, to withstand such tensions and other forces acting thereon may require structural reinforcement and constraints as to the minimum radius of any curvature that may be imposed upon it.
A convenient deployment handling/storage arrangement for elongate members having similar physical constraints is a rotatable winch reel but there are difficulties in reconciling the rotational motion of the reel and therefore the umbilial member with connection of the umbilical communications channels to the relatively stationary body.
Where a communication channel comprises a simple electrical conductor then a slip ring arrangement may be employed but such arrangements become impracticable when dealing with the transfer of large power currents or low power control signals susceptible to corruption by noise.
Similarly, where a communication channel comprises a single pressurised fluid hose then an axial rotary coupling may be employed but this also becomes impracticable or at least very expensive to engineer where more than one such rotary coupling is required and the fluids contained are at high pressure.
Bearing in mind the exemplary nature of the installation described and, the generality of a communication system between two bodies it is an object of the present invention to provide such a communication system, and a method of connecting communication channels between two bodies, which in a simple and inexpensive manner mitigates at least some of the disadvantages of known umbilical communication systems.
According to one aspect of the present invention a communication system between two bodies includes a flexible umbilical member, having a plurality of communication channels, connected at one end thereof to communication channels of one body and extending to the other body, deployment means, carried by the other body, including support means for the other end of the umbilical member, coupling means for the communication channels thereof, a jumper umbilical, having a corresponding number of communication channels and greater flexibility than the umbilical member, connected at one end thereof to the communication channels of said other body and at the other end thereof to the umbilical member by way of the coupling means, a rotatable reel forming the support means and on which a preset length of the umbilical member and jumper, including the coupling means, is wound, excess jumper umbilical between the body connection and support reel being accumulated in a storage region, and drive means operable to rotate the support reel and change the length of umbilical member on the reel, and, by a corresponding amount the length of jumper umbilical accumulated in the storage region.
According to another aspect of the present invention a method of connecting communication channels of two bodies to each other by way of a flexible umbilical member containing corresponding communication channels, comprises connecting one end of the umbilical member to the communication channels of one of the bodies, supporting the other end of the umbilical member at deployment means carried by the other body and terminating said other end of the umbilical member at coupling means, connecting the coupling means to communication channels of said other body by way of a jumper umbilical having greater flexibility than the umbilical member, passing a length of the coupled umbilical member and jumper umbilical, including the coupling means, around a rotatable support reel, collecting excess jumper umbilical between the support reel and the connection with said other body in a storage region, and controlling the length of umbilical member deployed between the bodies by winding the umbilical member onto and off the support reel, and depositing in, or withdrawing from, said storage region a corresponding length of the more flexible jumper umbilical unwound from or wound onto the support reel.
An embodiment of the invention will now be described by way of example with reference to the accompanying drawings, in which:
Figure 1 is an elevation view of an off-shore oil production installation illustrating umbilical connection between a sub-sea structure and vessel floating above it, the deployment of the umbilical member between them being described above hereinbefore,
Figure 2 is a schematic view of one form of a communication system according to the present invention, and
Figure 3 is a schematic view of another form of communication system according to the present invention.
Referring to Figure 2 a communication system between two bodies 21 and 22 includes a flexible umbilical member 23 having a plurality of communication channels, connected at one end 24 thereof to communication channels (not shown) of one body 21 and extends to the other body 22.
The umbilical member is formed by a bundle of discrete communication channel elements, such as electrical conductors and fluid hoses, contained within a single surrounding sheath, which sheath may include metallic reinforcement element to protect the umbilical member from impact damage and tension forces therein.
The other body 22 carries deployment means 25, which deployment means includes support means for the other end 26 of the umbilical member 23 in the form of a support reel 27 and coupling means 28 providing terminations of the individual communication channels of the umbilical member.
The deployment means 25 also includes a jumper umbilical 29 comprising a corresponding number of communication channels and greater flexibility than the umbilical member 23, the channels of the jumper umbilical being connected at one end 30 to corresponding channels of the structure 22 and at the other end 31 the communication channels are terminated at the coupling means 28 which joins corresponding channels with those of the umbilical member.
The support reel 27 is rotatably mounted on an axle 32 and a drive motor 33 provides drive means. The axle also carries braking means 34 which can hold the support reel fixed in any rotational position.
A length of the umbilical member 23 and jumper umbilical 29, including the coupling means 28, is wound on the support reel in a plurality of turns. At least a portion 29' of the jumper umbilical is wound on the support reel in the opposite rotational sense to the umbilical member, that is, when the reel is viewed from one end, and if the umbilical member is wound on in a clockwise direction terminating at the coupling means then said portion of jumper umbilical when viewed from the same end is wound in an anti-ciockwise sense. The length of the jumper umbilical is such that excess jumper umbilical between the capstan reel and the termination point 30 is accummulated in a storage region 35. The storage region may conveniently comprise a clear area of the body 22 in which the flexible jumper is allowed to pile.The support reel has a constant radius of curvature which extends for the length of the reel, said radius of curvature being equal to, or greater than a minimum radius of curvature tolerable by the umbilical member to avoid damage thereto.
The jumper umbilical 29, which is only ever located in the deployment means and not deployed into a more hostile environment, may be made significantly more flexible than the umbilical member 23 by omitting protective features such as metallic reinforcement and even a single surrounding sheath, the discrete umbilical channel elements being loosely bundled together so that the flexibility of the jumper umbilical is substantially that of the stiffest communication channel element.
The system thus far described will be seen to provide an umbilical connection between communication channels of the two bodies 21 and 22. The length of umbilical member 23 deployed between the two bodies, that is, between body 21 and deployment means 25, can be lessened by driving the support reel in such a sense as to wind some of the umbilical member onto the reel and the difference in winding direction of the jumper umbilical causes a corresponding length of the jumper umbilical member 29 which is deposited in the storage region 29, to be withdrawn therefrom and wound on the reel.
Conversely, the deployed length of umbilical member is increased by driving the support reel in the opposite rotational sense, the umbilical member being unwound from the support reel and deployed between the deployment means and the body 21, the reel rotation causing a corresponding length of the jumper umbilical to be unwound from the support reel and deposited in the storage region 35.
In some situations of deployed umbilical, for instance, the arrangement outlined above with reference to Figure 1, it may be seen that for a large proportion of operating time the deployed umbilical length is a minimum and only has to be increased to accommodate exceptional conditions. In such circumstances the above outlined configuration of support reel and winding directions means that not only is the undeployed length of umbilical stored conveniently on the support reel but so also the majority of the jumper umbilical instead of lying in the storage region. Only on the occasions when it is necessary to deploy a further length of umbilical is the corresponding length of jumper umbilical deposited in the storage region.
Where the operational requirements are such that the length of umbilical deployed is normally a maximum, except for occasions when some of the deployed length is reeled onto the support reel to lessen it, then it may be preferable to wind the jumper umbilical on the support reel in the same rotational sense as the umbilical, as shown in Figure 3.
In this arrangement it will be seen that as the length of deployed umbilical is lessened by winding a portion of it onto the support reel a corresponding length of jumper is unwound from the support reel and deposited in the storage region. Conversely, as the deployed length of umbilical is increased a corresponding length of jumper is drawn from the storage region onto the support reel.
Although it may be seen that one or other of the above winding direction relationships may be considered preferential for certain operating circumstances it will be appreciated that if desired either relationship may be employed for any operating circumstances.
The above description includes the essential features of the invention necessary for understanding its operation and the underlying principle of avoiding rotary couplings etc. by the use of a simple very flexible and readily stowed jumper umbilical.
However further consideration may be given to specific constructional aspects of the system as they are influenced by operational conditions.
For instance, with the winding direction configuration shown in Figure 3 when tensions imposed upon the deployed umbilical are relatively low the preset length of umbilical member/jumper umbilical may be wound on the reel with only frictional contact therebetween in the manner of a capstan. in such circumstances the preset length must be chosen so that the tension is dissipated by frictional contact between the wound length and the reel. In the case of oppositely wound umbilical and jumper as shown in
Figure 2 if the wound length becomes less than the minimum the whole umbilical/jumper combination will slip from the reel whereas with the arrangement shown in Figure 3 the jumper umbilical will be drawn onto the reel and tension set up in it at the termination 30.
Preferably, the coupling means 28 is attached to the reel 27 so that any tension in the umbilical member 23 not absorbed by frictional contact between the umbilical member and reel acts on the attached coupling means and is not transmitted to the jumper umbilical.
This not only obviates the problem of maintaining minimum umbilical and jumper lengths to avoid slippage on the reel but also enables the jumper umbilical to be constructed in accordance with the desired flexibility properties for storage rather than resisting tensile loading.
The coupling means may be attached to the reel by releasable means, such as frangible connections or a reel-position-responsive latch, which responds to a tension in the end of the umbilical member, greater than a predetermined safe working level and acting on the coupling means, to detach it from the reel and/or uncouple the umbilical member from the jumper umbilical, permitting the umbilical member to be pulled by the tension-causing force clear of the capstan reel and deployment means.
The communication system of the present invention described above with reference to Figures 2 and 3 may be implemented with any bodies, particularly where one undertakes limited movements with respect to the other, such as land, air or marine vehicles which manoeuvre with respect to a control station or vehicle.
Depending on the tension appearing on the umbilical member, the umbilical structural characteristics and the responsiveness of the support reel driving means, the system may include means for measuring the actual tension in the deployed umbilical member and comprise means for maintaining the tension therein constant by continuously varying the length of umbilical member deployed.
The system of the present invention is particularly useful in the installation described hereinbefore with reference to Figure 1, the one body 21 (of Figure 2) comprising the sub-sea structure 10 and the other body 22 comprising the floating vessel. The high amplitude support 16 is provided by the capstan reel 27 from which the freely deployed umbilical member is hung, connection to the vessel being by way of a more flexible jumper umbilical. In changing from the free deployment mode to constant tension mode of that installation the capstan reel is driven to wind in and store the excess deployed length of umbilical member, correspondingly varying the length of the jumper umbilical on the support reel, until the attachment point 19 is at a position at which it can be attached to the constant tension device 18.
Conversely, in changing from low amplitude to high amplitude operation the attachment point 19 is released from the constant tension device and the support reel driven to increase the deployed length.
As will be appreciated from the above description, the support reel provides a convenient storage means for the relatively inflexible reinforced umbilical member whilst the relatively more flexible jumper umbilical when displaced from the reel is allowed to accumulate on the vessel deck or is readily stowed manually, particularly as reel operations associated with deployment mode changes are not expected frequently.
Claims (10)
1. A communication system between two bodies including a flexible umbilical member, having a plurality of communication channels, connected at one end thereof to communication channels of one body and extending to the other body, and deployment means, carried by the other body, including support means for the other end of the umbilical member, coupling means for the communication channels thereof, a jumper umbilical, having a corresponding number of communication channels and greater flexibility than the umbilical member, connected at one end thereof to the communication channels of said other body and at the other end thereof to the umbilical member by way of the coupling means, a rotatable reel forming the support means and on which a preset length of the umbilical member and jumper, including the coupling means, is wound, excess jumper umbilical between the body connection and support reel being accumulated in a storage region and drive means operable to rotate the support reel and change the length of umbilical member on the reel, and, by a corresponding amount the length of jumper umbilical accumulated in the storage region.
2. A communication system as claimed in claim 1 in which at least a portion of the jumper umbilical is wound on the support reel in the opposite rotational sense to the umbilical member such that rotation of the support reel in one sense to lessen the length of umbilical member deployed draws said corresponding length of jumper umbilical from the storage region to be wound on the support reel and rotation of the support reel in the opposite sense, increasing the length of umbilical member deployed, causes said corresponding length of jumper umbilical to be wound off the support reel and deposited in the storage region.
3. A communication system as claimed in claim 1 or claim 2 in which the umbilical member comprises a plurality of discrete communication channel elements contained within a single surrounding sheath.
4. A communication system as claimed in claim 3 in which the surrounding sheath includes metallic reinforcement elements.
5. A communication system as claimed in any one of claims 1 to 4 in which the support reel has a constant radius extending for the length of the reel on which is wound said preset length of umbilical member and jumper umbilical.
6. A communication system as claimed in claim 5 in which the radius of curvature of the reel is equal to the minimum radius of curvature tolerable by the umbilical member.
7. A communication system as claimed in any one of the preceding claims in which the jumper umbilical comprises a loosely collected bundle of individual communication channel elements, the flexibility of the jumper being substantially equal to the flexibility of the stiffest communication channel element.
8. A communication system as claimed in any one of the preceding claims in which the coupling means between the umbilical member and jumper umbilical is attached to the reel.
9. A communication system as claimed in claim 8 in which the coupling means is responsibe to a tension in the end of the umbilical member, greater than a predetermined safe working level, to detach from the reel and uncouple the umbilical member from the jumper umbilical.
10. A method of connecting communication channels of two bodies to each other by way of an umbilical member of limited flexibility containing corresponding communication channels, comprising connecting one end of the umbilical member to the communication channels of one of the bodies, supporting the other end of the umbilical member at deployment means carried by the other body and terminating said other end of the umbilical member at coupling means, connecting the coupling means to communication channels of said other body by way of a jumper umbilical having greater flexibility than the umbilical member, passing a length of the coupled umbilical member and jumper umbilical, including the coupling means, around a rotatable support reel, collecting excess jumper umbilical between the support reel and the connection with said other body in a storage region, and controlling the length of umbilical member deployed between the bodies by winding the umbilical member onto and off the support reel, and depositing in, or withdrawing from, said storage region a corresponding length of the more flexible jumper umbilical unwound from or wound onto the support reel.
10. A communication system between two bodies substantially as herein described with reference to, and as shown in, Figure 2 or Figure 3 of the accompanying drawings.
11. A method of connecting communication channels of two bodies to each other by way of a flexible umbilical member containing corresponding communication channels, comprising connecting one end of the umbilical member to the communication channels of one of the bodies, supporting the other end of the umbilical member at depoyment means carried by the other body and terminating said other end of the umbilical member at coupling means, connecting the coupling means to communication channels of said other body by way of a jumper umbilical having greater flexibility than the umbilical member, passing a length of the coupled umbilical member and jumper umbilical, including the coupling means, around a rotatable support reel, collecting excess jumper umbilical between the support reel and the connection with said other body in a storage region, and controlling the length of umbilical member deployed between the bodies by winding the umbilical member onto and off the support reel, and depositing in, or withdrawing from, said storage region a corresponding length of the more flexible jumper umbilical unwound from or wound onto the support reel.
12. A method of connecting communication channels as claimed in claim 11 comprising winding at least a portion of the jumper umbilical in the opposite rotational sense to the umnilical member so that as the length of umbilical member deployed is increased by winding the umbilical member off the support reel a corresponding length of the jumper umbilical is wound from the support reel and deposited in thew storage region
13. A method of connecting communication channels of bodies to each other, by way of a flexible umbilical member containing corresponding communication channels, substantially as herein described with reference to, and as shown in, Figure 2 or Figure 3 of the accompanying drawings.
Amendments to the claims have been filed, and have the following effect: "(a) Claims 1, 5,6, 11 above have been deleted or
textually amended.
"(b) New or textually amended claims have been filed
as follows:
Claims 1,5,10 "(c) Claims 7-10, 12 & 13 above have been re
numbered as 6-9, 11 & 12 and their
appendancies corrected.
1. A communication system between two bodies including an umbilical member of limited flexibility, having a plurality of communication channels, connected at one end thereof to communication channels of one body and extending to the other body, and deployment means, carried by the other body, including support means for the other end of the umbilical member disposed at a fixed location on the body, coupling means for the communication channels thereof, a jumper umbilical, having a corresponding number of communication channels and greater flexibility than the umbilical member, connected at one end thereof to the communication channels of said other body and at the other end thereof to the umbilical member by way of the coupling means, a rotatable reel forming the support means and on which is wound and supported a length of the umbilical member in excess of the deployed length, the coupling means and a length of the jumper, excess jumper umbilical between the body connection and support reel being accumulated in a storage region, and drive means operable to rotate the support reel and change the length of umbilical member stored on the reel, and, by a corresponding amount the length of jumper umbilical accumulated in the storage region.
5. A communication system as claimed in any one of claims 1 to 4 in which the support reel has a constant radius of curvature equal to the minimum radius of curvature tolerable by the umbilical member extending for the length of the reel on which is wound said lengths of umbilical member and jumper umbilical.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08518226A GB2179017A (en) | 1985-07-19 | 1985-07-19 | Umbilical communication between two bodies |
| NO862894A NO862894L (en) | 1985-07-19 | 1986-07-17 | BUILDING RELATIONSHIP BETWEEN TWO BODIES. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08518226A GB2179017A (en) | 1985-07-19 | 1985-07-19 | Umbilical communication between two bodies |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8518226D0 GB8518226D0 (en) | 1985-08-29 |
| GB2179017A true GB2179017A (en) | 1987-02-25 |
Family
ID=10582516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08518226A Withdrawn GB2179017A (en) | 1985-07-19 | 1985-07-19 | Umbilical communication between two bodies |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2179017A (en) |
| NO (1) | NO862894L (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2537089A (en) * | 2015-01-19 | 2016-10-12 | Magma Global Ltd | Riser system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB714492A (en) * | 1950-12-29 | 1954-09-01 | David Rushworth | Improvements in the method of supplying power to a reciprocating carriage |
| GB755991A (en) * | 1954-04-08 | 1956-08-29 | David Rushworth | Improvements in apparatus for supplying power to a carriage reciprocating along a rectilinear track |
| GB1160724A (en) * | 1966-11-07 | 1969-08-06 | Leonard Adlington | Improvements in Cable Reeling Drums |
| GB2046693A (en) * | 1979-04-06 | 1980-11-19 | Elkem Spigerverket As | System for mooring a vessel |
-
1985
- 1985-07-19 GB GB08518226A patent/GB2179017A/en not_active Withdrawn
-
1986
- 1986-07-17 NO NO862894A patent/NO862894L/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB714492A (en) * | 1950-12-29 | 1954-09-01 | David Rushworth | Improvements in the method of supplying power to a reciprocating carriage |
| GB755991A (en) * | 1954-04-08 | 1956-08-29 | David Rushworth | Improvements in apparatus for supplying power to a carriage reciprocating along a rectilinear track |
| GB1160724A (en) * | 1966-11-07 | 1969-08-06 | Leonard Adlington | Improvements in Cable Reeling Drums |
| GB2046693A (en) * | 1979-04-06 | 1980-11-19 | Elkem Spigerverket As | System for mooring a vessel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2537089A (en) * | 2015-01-19 | 2016-10-12 | Magma Global Ltd | Riser system |
| US10053920B2 (en) | 2015-01-19 | 2018-08-21 | Magma Global Limited | Riser system |
| GB2537089B (en) * | 2015-01-19 | 2020-11-25 | Magma Global Ltd | Riser system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8518226D0 (en) | 1985-08-29 |
| NO862894D0 (en) | 1986-07-17 |
| NO862894L (en) | 1987-01-20 |
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