very interesting thread.
I have not used company calculation pads for over two decades now, as the trend in my industry (energy) has been towards digital calculations or documents that can be stored, signed and transmitted electronically.
I carry around an A4 lined or squared notepad for...
Indra,
By riser do you mean a riser attached to a platform or a drilling riser deployed from a floating vessel or jackup?
If its the latter then you will need to use dedicated FE software to accurately capture the combination of first order loads from waves and currents and the second order...
A couple of years I looked at the Zap-Lok system for a short onshore oil line, that project did not go ahead, but it may be a system that would be suitable for your application. Since I looked at it, the company has been bought by NOV...
I have seen cooking oil used in the outermost annuli of offshore wells. The annulus was exposed to the sea near mudline and this caused the water level in the annuli to rise and fall in time with tides and wave. As Compositepro mentions, corrosion is most likely in this oxygenated layer and the...
From my experience, the main FE packages used for offshore structures are SACS, SESAM and ANSYS (ASAS), they all have their own plus points and negatives.
As TezzaTwo has noted you will need to get someone experienced on board to run the software as its only too easy for a new user, no matter...
Fremgym,
I do not want to breach any rules on advertising on this forum, I work as the technical director of the company which designs and supplies Conductor Supported Platforms using the Sea Swift brand name, some quick searching on the internet will bring up our details if you wish to contact...
Attached files for referencehttp://files.engineering.com/getfile.aspx?folder=da35f519-f0ab-4004-a6a3-b6d296ab9036&file=A_study_on_effect_of_Drag_and_Toque_on_buckling_of_drillstring_in_horizontal_wells.pdf
Hobbs101,
Combined buckling and torque is an area that has seen significant research in the offshore industry, particularly for downhole drillpipes and other tubulars.
Some of the initial research was performed by Lubinski and recently Stefan Miska at the University of Tulsa. I would recommend...
Fremgym,
I think that you are on the correct track, you will need to build a deck extension off the side of the MOPU, you may be able to avoid bracing onto the hull but would need to react out onto the deck. From experience I would suspect that you will need to use a larger size of pipe than...
I would be extremely wary of welding directly onto a conductor that is also acting as a pile.
The weld class from a fatigue standpoint is likely to be very poor and you run a risk of any crack which initiates in the weld migrating to the main body of the conductor pipe with catastrophic...
