Method for determining the size of tubular pipe to be...

Details Method for determining the size of tubular pipe to be... Method for determining the size of tubular pipe to be...

2011-03-15

2011-03-15

Gay, Jennifer H (Department: 3672)

Wells

Processes

With indicating, testing, measuring or locating

Reexamination Certificate

active

07905281

ABSTRACT:
A method for determining the size of tubular pipe to be inserted into an interval of cased or uncased borehole is disclosed. The position of the borehole wall or innermost casing surface in the interval is determined and a window length that is less than the length of the interval is defined. A series of windows along the interval is defined and for each window, the determined position of the borehole wall in that window is used to define a polygon, the edges of which are defined by the parts of the borehole wall closest to the borehole axis in that window. The maximum size of pipe diameter that will fit inside the polygon in each window without intersecting the edges is determined and the size of pipe to be inserted into the interval selected based on the maximum size of diameter pipe determined for each window.

REFERENCES:
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patent: 6044326 (2000-03-01), Huiszoon
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Wagg, B.T. and Matthews, C.M. 2000. Evaluating Casing Deformation. World Oil, Dec. 2000, p. 44-46.
C. Labat, S. Brady, M. Everett, D. Ellis, M. Doghmi, J.C. Tomlinson, G. Shehab: “3D Azimuthal LWD Caliper,” Society of Petroleum Engineers, vol. SPE, No. 77526, Sep. 29-Oct. 2, 2002, p. 1-17, XP002434221 San Antonio.

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