Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. jfduroch

    is GOM a more complex geology than other location in the world

    Thank you DrillerNic. You provide some technical insight with regards to Salt formation in the GOM and I understand reading in between the line that although tricky it is no more tricky that in other regions. That is a valuable answer. Apparently I progressed a bit on my side on this...
  2. jfduroch

    is GOM a more complex geology than other location in the world

    zdas, I would like to clarify slightly my point. I am not a driller, I am not a geologist but I am a mechanical engineer with more than 10 years experience in the offshore construction field and I did a bit of reservoir engineering. My question was certainly naive but had no political...
  3. jfduroch

    is GOM a more complex geology than other location in the world

    hello, I have been told that drilling in the Gulf of Mexico may be more challenging than other locations in the world. I would like to have professional opinion on such a statement. Can someone point me out towards the reasons (briefly) why the Gulf of mexico geological structure would be more...
  4. jfduroch

    Vessel motions during pipelaying

    Vessel motion are of critical importance in pipelay and month of engineering are dedicated to such analysis particularly with regards to fatigue. the oldest software package is called OFFPIPE more recent and also 3D models can be designed now with either Orcaflex as mentionned in previous...
  5. jfduroch

    pipeline anode temp

    You may have to perform qualification testing of your anode material to guaranty a minimum efficiency or to revisit potentially the metallurgy or deviate from the standard code curves. The alternative proposed above using a insulation sheath is also possible but there again you will have to...
  6. jfduroch

    Anchor Protection for Buried Pipeline

    GNicholson, I believe that you have got your response in the previous answers. I won t be adding anything else except that when the pipeline will be built, trenched and backfilled you may need to be able to locate it properly for your as-built survey and subsequent maintenance surveys. Pay...
  7. jfduroch

    pipeline internal corrosion

    Thank you all for your response which I did find absolutely satisfactory. We are definitely in the situation that gr2vessels describes. Repair is going to take place we are taking about a WI injection line the line will be flushed pigged and tested with treated seawater as it is plugged for the...
  8. jfduroch

    pipeline internal corrosion

    A pipeline has been partially filled with seawater following its accidental rupture it is simple Carbon Steel X65. Let admit that there is 1mm corrosion allowance. How long would it take for seawater to degrade the line internally knowing that the line has been sealed plugged just after its rupture.
  9. jfduroch

    structural welding directly on pipeline forbidden

    According to the ASME it is not allowed to make longitudinal welding directly on a pipeline wall. I have seldom seen any circonferential welding directly on the external wall of a pipeline. Standard practice I have seen were to limit to butt welds only. I could not find any standard that would...
  10. jfduroch

    Friction Coefficient between track tensioner + PP coated pipeline

    I would suggest that you contact coating suppliers I believe that poeple like - Bredero Price (or) SocoRil / Socotherm have performed some test for various clients Alternatively you should contact equipment manufacturer such as WestTech Gear US, Hydralift or Huisman Holland who may give you...
  11. jfduroch

    Pipeline Expansion Analyses

    As far as I am concerned Regardless of the fact whether the pipe is empty of filled, the pressure components of the axial force Shall be accounted in the calculation for expansion. Please refer to DnV OS F101 that will provide you with the fully constraint axial force formula for your pipe. As...
  12. jfduroch

    design of rock cover on pipelines

    Mike The first point is to define the reason for your rock cover: - pipeline protection from dropped object, vessel grounting, anchor impacts etc... - additional submerged weight wrt upheaval buckling in the case your pipe is hot or high pressure. Then you need to determine the height of cover...
  13. jfduroch

    I am trying to export an range of e

    I am trying to export an range of excel cells into word via a VBA macro and I would like to paste the cells in word as a picture. I have tried the following which doesnt work as I get an error message on the paste command -runtime error 4605-command is not available - this concerns the paste as...
  14. jfduroch

    Ducts, pipes : Influence of soil thermal characteristics

    I suggest that you have a look at the recent OMAE (Offshore MEchanics and Actic Engineering Conference) 2002-2003 and OTC 2002-2003 (offshore technology conference). I remember that Solt Offshore have carried out a research program on the thermal preformance on buried pipeline and reported some...
  15. jfduroch

    End cap effect calculation?

    The End Cap Force is an force introduced in pipelines formulation for the effective axial force. It derives from the fact that the pipeline is immersed in pressure fields. You have to recall the Archimede law. In the Archimede law you can replace the integration of the pressure field on an...
  16. jfduroch

    incolloy 825

    It is unlikely that someone will provide you with an example as all contractors have their own knowhow on the subject. try contacting infill material suppliers such as SAF, lincoln or Buler Tiesen
  17. jfduroch

    Wave forces on side of barge

    There is a book written by Dr Faltinsen that review wave theory and hydrodynamic loadings on structures. I don t know a university that doesn t have this book as it is very well known. For detailed hydrodynamics and large body behaviours you will be to consult a naval architect who is going to...
  18. jfduroch

    Mathcad - Smartsketch

    New software installed - New problem. The installation of mathcad2000i has jammed the smartscketch "macro" tool for automatic scketch generation. The origin of the problem is unkown at the moment
  19. jfduroch

    New Mathcad 2000i version : bug

    The Problem has been resolved with the Mathsoft support team and was partly due to the fact that parameters are no longer initialised to zero by default in the new version. Loop programming was unable to proceed as a result. As a matter of fact it took quite a lot of time to solve. In the...
  20. jfduroch

    New Mathcad 2000i version : bug

    We have recently installed the latest Mathcad version 2000i and have identified a very important problem with it. We have discovered that it is no longer possible to call functions within user defined functions. This is for both user defined or library function ex: F(x,Q) is no longer possible...

Part and Inventory Search

Back
Top