G - Physics – 05 – B
Patent
G - Physics
05
B
354/7
G05B 17/02 (2006.01)
Patent
CA 1117656
ABSTRACT OF THE DISCLOSURE An apparatus for simulating the circulating of a fluid in the circulation system of an oil well extending from the surface of the earth to a point intersecting an underground formation, and used in conjunction with a programmable digital calculator programmed to calculate fluid pressure at a plurality of points in the circulation system, wherein the apparatus includes, manually adjustable means for indicating the pump rate of a pump in the circulation system; manually adjustable means for indicating the density of the fluid being pumped: manually adjustable means for indicating the relative opening of a choke in the circulation system: manually adjustable means for indicating the opened and closed positions of a blowout preventer in the circulation system; manually adjustable means for indicating the opened and closed positions of a valve con- trolling fluid communication between the choke and the oil well annulus in the circulation system; and, display means for displaying a plurality of fluid pressures calculated by the programmable calculator in response to the indicated pump rate, density of the fluid being pumped, the relative opening of the choke, the position of the blowout preventer, and the position of the valve, wherein the display includes at least the fluid pressure in a standpipe and the fluid pressure in an oil well casing in the circulation system, the improvement comprising: first circuit means, responsive to changes in the manually ad- justable pump rate indicating means, for providing to the digital programmable calculator at least periodically a digital representation of the pump rate and a digital representation of a sum of pumping strokes for the pump in the circulation system; and, second circuit means, responsive to changes in the manually adjustable relative choke opening indicating means, for providing to the digital programmable calculator at least periodically a digital representation of the choke opening. The invention also discloses a method of simulating the circulation of fluids through a circulation system of an oil well utilizing apparatus as for example described above.
354407
Gau Gerald S.
Zamora Mario
Company Halliburton
Swabey Ogilvy Renault
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