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Recent content by jjwamp

  1. jjwamp

    Failure analysis of drilling equipment like Top sub , float sub

    There is some good information on drilling & fishing tools. Not really failure related but perhaps useful. www.tangohire.com.au or http://tangohire.com.au/fishing-tools/
  2. jjwamp

    Subsea production equipment cost (Very rough estimate needed)

    All, I am giving a presentation on subsea equipment and wanted to get a very rough estimate of the cost range of individual components. While I recognize it will depend on the specification, number of wells, gas lift/injection etc at a very rough level do these numbers make sense. Lets just...
  3. jjwamp

    The percentage of service company fee among total exploration fee?

    Worktolove, 1) You need to get your service companies involved. Large service company expeditures (with suggested multinational companies) will be: Wireline (Schlumberger, Halliburton, Western Atlas) Cementing (Schlumberger, Halliburton, BJ) Mud (MI - Schlumberger, Baroid - Halliburton, Baker)...
  4. jjwamp

    Help settle a debate

    Most deepwater wells will have some sort of smart system where downhole temperature and pressue along with temperature and pressure at the tree can be measured. This seems like an easy debate to solve by just going to any operator and asking for the data during shut in as jlseagull mentioned. So...
  5. jjwamp

    Drilling acronyms

    I think Goma is looking for common abbreviations used on IADC or morning workover and drilling reports. There are no rules or IADC accepted acronims that I know of. It is just going to take time. R/U - Rig up RIH/TIH - Run in hole/Trip in Hole PU - pick up MU - make up NU - Nipple up (ie BOPs)...
  6. jjwamp

    Difference between threads????

    ih8wk For drillpipe connections IF FH Reg Get with smith drilco. They should be able to give you a thread gauge that you can carry around with you. Also they have a real good drill collar/drill pipe inspection book. If you work for the drilling contractor ask you company man to get you one...
  7. jjwamp

    Calc req to confirm N2 will push slurry down 6"

    By the way .052 is a conversion factor is all. john1964 posted in another thread the proof below if you want to know where it comes from: Normal formation pressure is equal to the hydrostatic pressure of the fluid extending from the surface to the subsurface formation. Add surface pressure if...
  8. jjwamp

    Compute pressure from Depth of fluidn level

    Thanks john1964 for the proof. .052 is just a conversion factor. For David Simpson, For drilling engineers hydrostatic pressure is often estimated by the equation: .052 * MW (lbs/gal) * TVD (ft) Weight of fresh water is 8.33 lbs/gal 8.33 * .052 = .433 psi/ft which is also the number you...
  9. jjwamp

    Calc req to confirm N2 will push slurry down 6"

    62.4 is lbs/ft^3 of water * SG = density of fluid you are dealing with. I am not sure the exact configuration but my guess is basically you have a pipeline full of seawater or some other fluid that you wish to remove from the pipeline to do some work on it. I generally work in english notation...
  10. jjwamp

    use of API gravity

    At different temperatures (or pressures) the oil expands/contracts as does any fluid. As such you need a reference temperature and pressure. API gravity is a density measurement. Absolute API gravity should not change however the density will change depending on temperature. Oil's value alot...
  11. jjwamp

    WELL OPERATION

    Could be many reasons. Most likely as dcasto was eluding to you have a gas bubble migrating through the tubing. As it reaches near surface it expands rapidly unloading the fluid above it in a "surge".
  12. jjwamp

    Compute pressure from Depth of fluidn level

    If you want a generic guesstimate of reservoir pressure (and as you have fluid above pump I am guessing it is rodded up) Shut in the well until surface pressure stabilizes. If it is on rod pump my guess is the pressure will be low and although the gas on the backside has some weight it is...
  13. jjwamp

    Well completion design for high temperature and high pressure wells

    Sorry this is late. Check out http://www.lonestarsteel.com/pdf/OU_Casing_Design_Pres_March_2005.pdf It is a quick and dirty guide to casing design. If you need something else there are programs available.
  14. jjwamp

    Annulus Gas Pressure

    I looked the the Basil Compressors for installation in the old shell field in michigan, even talking to Basil himself. Problem up there is the cold weather causing freezing. We were afraid that ice or salt may form and cause problems. Anyone had problems with this?
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