the term or results  when drilling for oil "OIL BASED MUD" what does that mean?
367269
The "mud" used while drilling keeps the hole under pressure so it doesn't blow out. In the early days, they blew out often because Mud wasn't used then. The Mud is heavier than salt water, so it exerts more pressure at the bottom of the hole, and it suspends the cuttings better than water, for removal. \n\nWhen drilling several thousand feet deep, several different types of rock are encountered: shale, sandstone, limestone, etc.\n\nSome of these rock type swell when flushed with water, and causes problems with the drilling. So oil or deisel is substituted in place of water to mix the mud in.
823588
Firstly, it's not just an Australian expression...it's worldwide.\n\nClear as mud means simply means you didn't understand even after it was explained.  Someone will explain or describe something but it still does not make sense.  Using the phrase "clear as mud" is kind of a sarcasm as mud is not clear and neither was what they just said.
43324
What takes the place of the oil depends on the drilling methods used.  Since the 1950's, secondary recovery processes such as hydraulic fracturing or waterflooding have been used to force fluids -into- the underground reseroirs of oil, forcing the oil -out- of the ground.  Thus, the fluids take the place of the oil. These secondary extraction processes allow drillers to extract much more oil from a well than was previously possible.\n\nIt's possible that a connection exists between hydrocarbon extraction and earthquakes (called "induced seismicity"), but there is no scientific concensus or proven "cause and effect" correlation between anthropogenic activity and earthquakes.\n\nI hope you can sleep easier now :)
715851
well it depends on what sort of a career your looking for.  since they do a lot of work on oil rigs im guessing you are mechanical or civil engineering.  so something like To obtain a full time position in (insert major) with Schlumberger.  Otherwise dont worry about putting an objective.  they generally know your objective is to get a job.
793490
Drill, and pray you find either water or oil.
11368
Once the drill is removed and the pressure allowed to escape, the void is usually crushed due to the weight of the rock around it.  However, if the drill is removed and the void is still active, it is possible for water and/or oil to fill up the void fast enough to minimize the impact of the collapse; but in the end, even with an active void, the area collapses and fills with rock.  \n\nIn general this isn't a problem, as oil companies tend never to pump an entire void dry, allowing it fill naturally again for further drilling.  So, the geographical affects are negligable.
24274
Yes, actually it will. well, not really run out of oil but obtainable oil.  It is estimated that drillable oil reserves could be extinguished within 50 years given present usage and the estimation of future usage.
582651
Water flooding as a secondary recovery method is a common technology. After primary recovery is complete there is a great deal of oil still coating the reservoir rock and by pushing water through the pores of the rock, some of this  oil is recovered.
527053
well the oil is under pressure, so when we drill all we are doing is releasing the pressure. Then when the pressure is gone there is still some oil left. sometimes to get out the oil we have to pump water down to force the oil up.\nSo it is not like you are left with any empty space if that is what you are thinking.\n\nthere are no consequences that I am aware of.
592739
This site will give you that information and more.\n\nhttp://www.livescience.com/technology/050407_earth_drill.html
283982
The answer to how oil is drilled can be found here:
679297
Not necessarily.  Oil that spills on the ground or into the water and is *never* recovered is a waste, but there's still plenty of energy inherent to the oil to make it worthwhile -- if the price is right.\n\nThe fact that the oil gushes out of the ground is because the drilling process has punctured a "bubble" (for lack of a better term) of petroleum that is under high pressure underground.  The puncture releases that pressure and forces the oil to the surface.  Now the trick is to control that flow without wasting any.\n\nOnce we control the flow of oil, it is then processed to make the petroleum products we have come to rely on so heavily -- motor oils, gasoline, aircraft fuels, kerosene, diesel, etc.\n\nA few years back, I was on the island of Aruba.  We visited one of the largest petroleum refineries in the world there -- produced something like 70% of the aviation fuel used by the Allies during the Second World War.  All the waste products they didn't need were dumped in a giant slag heap on one end of the island.\n\nForty years later, when oil prices had risen significantly, it became economically feasible to recycle that petroleum slag heap to produce more useful fuels from it.  So it didn't go to waste, it just wasn't the time.
636156
They are tiny little spaces found in the rock. These rocks are often referred to as porous permeable rock which means they have tiny interconnected spaces which allows the oil to reside.\n\nOil is usually sitting on top of water. That is how it is naturally found. When it is pumped out, the residual water fills up the spaces.\n\nRemember there are no big voids or holes made in the ground during this process. Oil doesn't sit in large underground cavarns or holes.
1160115
Lubri gel and Ez Gel are trade names for a class of additives used to condition the well bore in oil and gas drilling operations.\nDrilling mud has several properties  DENSITY or Mud Weight being one..FLUID a mixture of water and mud are pumped down to the drill bit to cool the drill bit, clear cuttings from the hole and to help  seal and condition the well bore. Water alone has a weight of 1000kg (m3 cubic meter)  as you go deeper into the earth more fluid weight(hydrostatic pressure) is needed to keep the pressure coming up from below in balance..You add BENTONITE GEL a type of clay to your mixing hopper and send it  to your mudtanks to increase your fluid density and then pump it down hole  it also helps seal thesmall gaps in the bore of your hole to help you retain fluid in the bore..and maintain hydrostatic balance on the gases or fluids downhole. Weight on Weight as opposed to an UNDERBALANCED DRILLING program.\nThere are many different types of additives that are used down hole ranging from INVERT a type of Diesel used in areas where a water based drilling fluid would damage your formation down hole..to SAWDUST  Cellophane and golfballs in extreme cases.\nLubri Gel & EZ Gel are trade names for a Bentonite Clay based drilling mud. Hope this helps
1108094
The National Assessment of United States Oil and Gas Resources prepared by the U.S. Geological Survey (USGS) provides estimates of quantities of technically recoverable oil and natural gas that could be added to our already proved reserves in the onshore and State offshore areas of the United States.\n\nit is table format so you should go to this link to look \n\nhttp://pubs.usgs.gov/fs/fs024-98/table1.htm
992008
empiracally ?? [[ignore spelling]]\n\ncompared against earlier well-drillings?\n\n(this would work ... "real-world" data is not elegant but it's very "real")
1136335
http://www.ioga.com/Special/crudeoil_Hist.htm\nThat should help.