VAM-TOP special gas seal thread
VAM-TOP is a special gas seal thread developed by Mannesmann in Vallourec, France. VAM has been authorized to process the technology in our oil market. Authorized companies: Dezhou Drilling Research Institute, Petroleum Exploration and Development [...]
Premium threaded tubing overview
Premium Connection tubing refers to tubing connected with Premium Connection joints. This type of tubing breaks through the framework of traditional API (American Petroleum Institute) joints in design and manufacturing to meet the higher requirements [...]
The problem of viscosity resistance is solved by the premium connection type petroleum casing
The anti-viscosity of oil casing depends on thread parameters to a great extent. Reasonable control of thread parameters can improve the anti-viscosity of oil casing. The research shows that the single parameter of API thread [...]
Selection of premium connection for high temperature and high pressure well
High temperature and high pressure wells put forward higher requirements for the premium connection. The manufacturer of the premium connection should not only pay attention to the preparatory work, screw joint design and quality assurance procedures in the early planning stage, but also run through all links of product processing, transportation and well pad.
Premium connection with double sealing surface
The casing with API standard thread connection is difficult to meet the production demand in many cases. In addition to meeting the joint performance, premium connection also needs to have good sealing performance under extreme environment and composite load.
Processing program of premium connection
The processing technology of the premium connection thread is realized by the processing program. CNC machine tools, the systems used and the specific processing procedures are different. The following common problems should be paid attention to when programming:
Processing characteristics and difficulties of premium connection
Premium connection includes thread, sealing surface and shoulder. The processing technology is complex. For example, when the coupling is processed, the distance between the thread and the sealing surface is relatively close, and a special undercut is generally designed at the end of the thread.
Direct connection premium connection
The feature of the direct connection type premium connection is that the tubing and casing are not connected by coupling, and the internal and external threads are directly processed at the end of the tubing and casing.
Selection of main sealing structure of premium connection
The sealing performance of the premium connection depends on the design of its main sealing structure. At the same time, the bonding of the premium connection mainly occurs on the main sealing surface.
The basic method of optimizing the sealing structure of premium connection
The sealing performance of premium connection mainly depends on the form of main sealing structure, the size of sealing interference and the sealing effect of auxiliary sealing structure.