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 crude oil which is extracted for the earth needs to be of a consistently high quality. This may not happen if underground water is allowed to flow into the oil reservoir and get mixed in with the oil. The casing of the well from the very beginning will prevent this from happening and you will be able to vouch for the quality of the oil. The pipe will prevent any contact with other materials and mixing with any liquids.
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.
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 crude oil which is extracted for the earth needs to be of a consistently high quality. This may not happen if underground water is allowed to flow into the oil reservoir and get mixed in with the oil. The casing of the well from the very beginning will prevent this from happening and you will be able to vouch for the quality of the oil. The pipe will prevent any contact with other materials and mixing with any liquids.
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.
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.
