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  • Users: jmcgrath
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  1. jmcgrath

    Ra 226 Shielding

    Dear All, I am going to be working with some Ra 226 and I need to put some shielding in place. Does anyone have a figure for the thickness of 4140 steel needed to half the counts? Thanks, John
  2. jmcgrath

    Definations of Zone 1,2, safe

    Can anyone point me in the direction of a clear and concise definition of what the difference is between zone 0,1,2 and safe in terms of distance from the well head and other variables? Thanks, John
  3. jmcgrath

    Hydrofluoric Acid

    Dear All, Does anyone know if Hydrofluoric Acid is used in any well bore treatments such as acidising, or is there any way that it can be naturally occurring in a well bore? Regards, John McGrath
  4. jmcgrath

    Hydrofloric Acid

    Dear All, I am testing out new materials for a project that I am working on and I have just been asked it they will stand up to attack by Hydrofloric Acid. From what I can tell there is very little that can stand up to this acid, but I need to know more about it first. Where does it naturally...
  5. jmcgrath

    Explosive Decompression on a Composite Rod

    Dear All, Does anyone have any experience in how a composite rod (aramide or carbon with a poly or epoxy resin) of about 4-6mm diameter will behave when exposed to explosive decompression. And when I say explosive decompression I mean from 10K psi to atmospheric in well under a second. It...
  6. jmcgrath

    Software Advice

    Hi All, I have recently changed companies and I no longer have access to MS Project to plan my projects. It is a small company with short term projects and they don’t have, or want to purchase, MS Project. Does anyone have any details of other (cheaper) software packages that I could use...
  7. jmcgrath

    Explosive Decompression on a Composite Wire

    I am looking for some feed back on explosive decompression on glass fibre, aramide and carbon fiber wires. I have several different types of wires made up of the above materials all around 4mm diameter. I have to test them for explosive decompression from 10,000 psi in a gas and I was...
  8. jmcgrath

    Material to Bond To Carbon Steel

    Dear All, I am looking for a material that will bond to carbon steal to create a coating what will be very resistant to abrasion and will insulate the metal electrically. Does anyone have any suggestions? Thanks, John McGrath
  9. jmcgrath

    Coating for Carbon Steel?

    Dear All, I am looking for a material that will bond to carbon steal to create a coating what will be very resistant to abrasion and will insulate the metal electrically. Does anyone have any suggestions? Thanks, John McGrath
  10. jmcgrath

    Material to Bond To Carbon Steel

    Dear All, I am looking for a material that will bond to carbon steal to create a coating what will be very resistant to abrasion and will insulate the metal electrically. Does anyone have any suggestions? Thanks, John McGrath
  11. jmcgrath

    Wellhead Zoning Rules

    Dear All, Does anyone know where I can find information on the differences between Zone I, Zone II and Safe Zone as applied to well heads? Thanks in advance, John McGrath
  12. jmcgrath

    Wire Fall Back Calculations

    Hi All, I am trying to compile some charts for wire fall back in an oil well for different wire sizes and casing sizes. Does anyone have any equations or charts that I can use? Any help would be appreciated. John McGrath
  13. jmcgrath

    Wire Fall Back Calculations

    Hi All, I am trying to compile some charts for wire fall back in a well for different wire sizes and casing sizes. Does anyone have any equations or charts that I can use? Any help would be appreciated. John McGrath
  14. jmcgrath

    Baker Tech Facts

    Hi All, Does anyone out there know where I can get an electronic copy of the baker Tech Facts book? I have tried Bakers web site and general searches on various sites all with no luck. Any help would be appreciated. John McGrath

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