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Oil Drilling Problems.docx

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Oil Drilling Problems The oil drilling is not easy. The fact that the holes can exceed six kilometers and can be made in the most inhospitable places on earth, always involves some danger. In the article presented below will be announced the most frequent problems during the drilling. The onslaught It is known to attack to a situation where the drilling fluid has a lower than other fluids found in the drilled strata pressure. These fluids may
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  Oil Drilling Problems   The oil drilling is not easy.   The fact that the holes can exceed six kilometers and can be made in the most inhospitable places on earth, always involves   some danger.   In the article presented below will be announced the most frequent problems during the drilling.   The onslaught   It is known to attack to a situation where the drilling fluid has a lower than other fluids found in the drilled strata pressure.   These fluids may be the same oil or gas or water bags which are in the path of the bit.   In these cases, a column of fluid pushes up the drilling fluid making up the annular space.   This can be seen on the surface due to the increase of volume and pressure experienced by the tank drilling mud separation.   To prevent thrusts is important to maintain the column pressure of drilling fluid exerted on the shaft.   In the case of a drop in plant and failure of the fluid pump may produce a thrust.    Another case in which this occurs is the lack of filling pressure while the drill pipe is removed.   During this time, if not properly fill the fluid well, a dash may occur because the string exerts a high pressure on the walls of the hole.   The processes to stop increase thrust based on the pressure of the drilling fluid to be able to leave the drill bit and perform their usual function.   The attack is the most dangerous gas because of its high speed, flammability and hydrogen sulfide content;   which can be extremely corrosive to the strings.   The basic control equipment onslaught is called Stack or Stacking  Arrangement.   This system is able to seal the well and control the fluid flow preventing these uncontrollably out and allowing secure movement of the pipe string.   The system consists of a set of seals, valves and pipes placed in the wellhead.   The blowout   The outbreak is a blowout after the attack phase and occurs when it is completely out of control.   If we can not restore the pressure of the drilling fluid during a well thrust eject the oil, gas or water;   until the parameter is reset.   Notably, the blowout can last for days, even months, with security issues, environmental and economic entails.   For  the reader an idea of the magnitude of the situation is in this picture an oil well blowout state.   Fire   The fire danger is closely linked to the tasks of exploitation and transportation of petroleum products.   The most common cases of fire in oil drilling occur after a blowout.   Hydrocarbon column expelled by the reservoir, when in contact with oxygen in the air, form an explosive atmosphere.   In situations of bursting sparks possible stresses due to the high forces to which the installation undergoes crude.   Note that in an installation of this type, the fire systems meet the highest standards even for the simple drop a metal piece a spark that ignites the mixture may occur.   Binding   The binding and unscrew are problems with the drill string.   In the case that one of the strings or other elements getting stuck unscrewing or extract becomes a complex operation commonly known as fishing.   The string can even split due to the efforts must support and, if so;   usually does it for one of their meetings.   This requires, if possible, to remove all of the string and through hooks, strings and extracting the deadening element baskets.   There are situations that the string of pipe is completely stuck and can not be removed which leads to the abandonment of the hole.   In other cases clogging may opt to divert drilling.   The collapse   Due to the efforts and vibrations transmitted to the geological strata the hole may assign moving large masses of rocks and disabling the well.   In order to prevent the collapse of the foundation work that well, covering the well with cement performed, endow stiffness.   The string of pipe and the drilling fluid also contribute, because they support efforts to stop landslides.  

pxc3895702.pdf

Jul 22, 2017
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