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Tubular String Characterization in High Temperature High by Jiuping Xu

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By Jiuping Xu

The ebook discusses the characters of tubular strings in HTHP(High Temperature - excessive strain) oil and fuel wells. those characters comprise the mechanical habit of tubular strings, the temperature and strain edition of tubular strings in numerous stipulations. for various stipulations, the publication establishes mathematical versions, and discusses resolution life and strong point of a few versions, offers algorithms comparable to the various versions. The booklet presents numerical experiments to ensure the validity of versions and the feasibility of algorithms, and in addition mentioned the influence of the parameters of versions for oil and fuel wells.
This booklet is written for researchers and technicians in petroleum and gasoline checking out and creation engineering. it's also meant to function a reference booklet for faculty academics and students.

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Extra resources for Tubular String Characterization in High Temperature High Pressure

Sample text

2) Hydraulic packer re-opening process (i) When the tubing is put on, the centre tube body moves up, and the support agencies return to a contracted state; (ii) The packer rubber tube automatically shrinks without compression or internal support, so the packer is re-opened; (iii) Continuous pressure is put on the string, so the packer’s slip automatically shrinks due to the spring tension, thus the tubing is re-opened. (3) Intubation packer re-opening process (i) When the tubing is put on, the intubation tube is pulled out from the sealed tube of the packer; (ii) Using specific tools, the packer is re-opened, and the lower tubing is pulled out.

The most generally accepted method for the analysis of buckling, tubular movement, and packer selection is the method developed by Lubinski and Althouse (1962), which considered only the vertical well with no friction. The analyses conducted following the basic approach of Lubinski and Althouse focused on developing methods for more complicated tubing configurations, such as tapered strings (Hammerlindl, 1977), (Hammerlindl, 1980). Henry Woods, in the appendix to Lubinski and Althouse (1962), developed a mechanical model for well buckling behavior that was able to predict the buckled configuration as a function of the well loads.

System, because of the greater production pressure, the tubing has a large deformation, resulting in a damaged tubular, therefore the maximum allowable deformation for the corresponding production pressure needs to be calculated. 8, when the wellhead is shut-in because the formation pressure is greater than the bottom pressure of the well-bore, the formation fluid continues to flow into the wellbore, and as the well-bore is a confined space, the well-bore pressure gradually increases until the bottom fluid pressure of the well-bore equals that of the formation pressure, at which point the formation fluid stops flowing into the well-bore.

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