The drilling of a well is one of the procedures to follow when involved in oil extraction. To secure the well, it needs to be cased and some items used in this process are the casing puller, the lift nubbin and the lifting cap. The well casing needs to be installed in order to prevent contaminating fluids or mud from getting into the oil as well as for preservation of the natural environment around the site.
To get to the oil, considerable amount of pressure is involved to drill beyond the lithosphere and other layers of earth and this must be factored in. The well may suffer collapse and cave in on itself, when it happens like that the oil stream is closed off, if the pressure is not constantly monitored. One way to strengthen the wall of the well is to insert big steel pipes into the bore of the well. This will in the long run prevent the well from caving in.
The pressure used in the extraction of the oil need to be watched constantly, so that the well does not collapse and cave in which will prevent the flow of oil. To sure up the walls of the well, a tube can be inserted into the drilled hole that will reduce any chance of the walls caving in.
The well's borehole can be drilled either vertically or diagonally and have steel pipes installed in it all the way to the base. The pipes are usually 40 feet long and are threaded in order to be able to be connected and form a chain or string. Each pair of pipes is then connected by what is called a collar.
The pipes are inserted into the well all the way to the reservoir and at this point a test pump is done. This is to check that the casing is functioning properly and there is no leakage, as well as to be able to remove any contaminants that might be there. To do this, the drill bit is put into the pipes together with drilling fluids. A large amount of drilling fluid is pumped in during the cleaning process.
A test pump is done after the pipes are positioned in the well all the way down to the reservoir. This is to make sure that the casing is working correctly with no leaks and also to remove any debris that could contaminate the oil. The drill bit is attached to the pipes alongside the drilling fluids. To clean the pipes, the fluid is pumped for a considerable period of time.
As tubulars are inserted after each stage of drilling and then cement added, it becomes clear that the drilling is done in stages, having the inserting and cementing of the pipes as part of its process. Also, at each stage, the size of the case is reduced, thus causing the newer one to be able to fit inside the previous one.
It will become apparent while drilling if an extra case is needed. This extra case is called intermediate casing and is normally installed in the area that shows signs of deterioration caused by drilling. The intermediate casing will strengthen and stabilize the area.
To get to the oil, considerable amount of pressure is involved to drill beyond the lithosphere and other layers of earth and this must be factored in. The well may suffer collapse and cave in on itself, when it happens like that the oil stream is closed off, if the pressure is not constantly monitored. One way to strengthen the wall of the well is to insert big steel pipes into the bore of the well. This will in the long run prevent the well from caving in.
The pressure used in the extraction of the oil need to be watched constantly, so that the well does not collapse and cave in which will prevent the flow of oil. To sure up the walls of the well, a tube can be inserted into the drilled hole that will reduce any chance of the walls caving in.
The well's borehole can be drilled either vertically or diagonally and have steel pipes installed in it all the way to the base. The pipes are usually 40 feet long and are threaded in order to be able to be connected and form a chain or string. Each pair of pipes is then connected by what is called a collar.
The pipes are inserted into the well all the way to the reservoir and at this point a test pump is done. This is to check that the casing is functioning properly and there is no leakage, as well as to be able to remove any contaminants that might be there. To do this, the drill bit is put into the pipes together with drilling fluids. A large amount of drilling fluid is pumped in during the cleaning process.
A test pump is done after the pipes are positioned in the well all the way down to the reservoir. This is to make sure that the casing is working correctly with no leaks and also to remove any debris that could contaminate the oil. The drill bit is attached to the pipes alongside the drilling fluids. To clean the pipes, the fluid is pumped for a considerable period of time.
As tubulars are inserted after each stage of drilling and then cement added, it becomes clear that the drilling is done in stages, having the inserting and cementing of the pipes as part of its process. Also, at each stage, the size of the case is reduced, thus causing the newer one to be able to fit inside the previous one.
It will become apparent while drilling if an extra case is needed. This extra case is called intermediate casing and is normally installed in the area that shows signs of deterioration caused by drilling. The intermediate casing will strengthen and stabilize the area.
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