Make up torque. The casing joint must be tightened to a certain torque before it can be put into oil and gas wells. For API threaded joints, the size of the make-up torque is specified in API RP 5c2.
The main functions of oil casing are as follows: 1). Loose sealing, collapsing and leaking formation; 2). Sealing oil, gas and water layers to prevent collusion, thus forming oil and gas channels; 3). Installing wellhead to control oil and gas flow, so as to facilitate drilling and production.
API 5CT casing pipe is used to support the oil and gas pipe wall, and to ensure the drilling process and the post-completion wells normal operation. Each well depending on the depth of drilling and geological conditions, to use several layers of casing.
KPE offers a complete range of casing pipe for kinds of demands in oil exploration and production. Material includes carbon steel (for most common use), alloy, Chrome, and high alloy steels. API 5CT Grades covers J55/K55, N80-1 and N80Q, L80, C90, T95, P110, Q125, and with additional requirements of 13 Cr.
Casing pipe section shape is round, in big diameter pipe and put it into the oil well, fixed by the cement, to protect other equipment which mostly made of iron and steel. Casing shall be designed to bear the different strength of external power, as crush, explode, stress and chemical corruption.
API is short for the American Petroleum Institute, API certification sub-system API monogram certification and product certification. The casing pipe with API monogram certification is high quality.
Oil Casing is a large-diameter pipe, played the role of fixed oil and gas wells, or wellbore wall. Oil casing steel grade: H40, J55, K55, N80, L80, C90, T95, P110, Q125, V150 and so on. End of the tube processing forms: short round thread, long round thread, buttress thread, special deduction.
Oil casing pipe is a steel pipe that used to support the oil and gas well wall, to ensure that the drilling process and after the completion of the normal operation of the entire oil well.
Casing pipe has different standards.PSL-1 and PSL-2 are standards that have been put in place to help with the more strict requirements for each grade. These two basic specifications are in part recognized as different levels of physical and technical requirements.
In order to increase the resistance of steel casing pipe in corrosion environment, Octal offers different types of coating systems to protect against from the corrosive and abrasion break.