One of the steps in dealing with oil extraction is the drilling of a well. Once drilling has been done, there is the need to have the well cased and the casing of the well requires the casing puller, also termed lift nubbin or the lifting cap. The well needs to be cased to prevent the leaking of the oil into the soil during pumping and the contamination of the oil by fluids or mud from the sides of the well.
When a well has been drilled, a significant amount of pressure is used up in order to go beyond the layers of the earth, including the lithosphere, to reach the oil below. This pressure needs to be monitored constantly. Otherwise, the well could collapse and cave in on itself thus closing off the oil stream. The insertion of a tube into the bore of the well will strengthen the annulus and reduce the possibility of the walls 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.
Crude oil needs to be of the same consistent high quality as that which is in the earth's reservoir. You have to be careful that underground water does not find its way into the oil reservoir, and becomes mixed with the oils stream. To prevent this, as well as contact with any fluids and substances, the casing of the drilled hole needs to take place before you start extracting the oil. If the steel pipe is not installed in the borehole, the quality of oil extracted will be compromised.
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.
There is usually a small space between the steel pipes and the walls of the well. These pipes need to be stabilized so that they stay in position for a long period of time. To do this, cement is pumped into the cavity between the well and the pipes. The cement should be given enough time to dry.
After each stage of the drilling process casing is carried out. It therefore means that cement is also added and that the drilling is also done in stages in conjunction with the inserting and cementing of the steel. This results in having the casings uniformly matched to fit from one stage to the next.
While the drilling is being done, any need for an extra case will be spotted. The steel pipe installed in the borehole at this juncture is called intermediate casing. It is done at the first sign of any weakness in the original casing caused by the drilling. The intermediate casing is supposed to strengthen that area.
When a well has been drilled, a significant amount of pressure is used up in order to go beyond the layers of the earth, including the lithosphere, to reach the oil below. This pressure needs to be monitored constantly. Otherwise, the well could collapse and cave in on itself thus closing off the oil stream. The insertion of a tube into the bore of the well will strengthen the annulus and reduce the possibility of the walls 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.
Crude oil needs to be of the same consistent high quality as that which is in the earth's reservoir. You have to be careful that underground water does not find its way into the oil reservoir, and becomes mixed with the oils stream. To prevent this, as well as contact with any fluids and substances, the casing of the drilled hole needs to take place before you start extracting the oil. If the steel pipe is not installed in the borehole, the quality of oil extracted will be compromised.
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.
There is usually a small space between the steel pipes and the walls of the well. These pipes need to be stabilized so that they stay in position for a long period of time. To do this, cement is pumped into the cavity between the well and the pipes. The cement should be given enough time to dry.
After each stage of the drilling process casing is carried out. It therefore means that cement is also added and that the drilling is also done in stages in conjunction with the inserting and cementing of the steel. This results in having the casings uniformly matched to fit from one stage to the next.
While the drilling is being done, any need for an extra case will be spotted. The steel pipe installed in the borehole at this juncture is called intermediate casing. It is done at the first sign of any weakness in the original casing caused by the drilling. The intermediate casing is supposed to strengthen that area.
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