E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
73/132
E21B 47/10 (2006.01) E21B 47/06 (2006.01) E21B 49/00 (2006.01) E21B 49/08 (2006.01)
Patent
CA 1277157
ABSTRACT OF THE DISCLOSURE The invention concerns a process for measuring the flow as a function of time of the several layers of a subterranean multilayer hydrocarbon-producing formation through which a well is drilled, and for determining the parameters of formation by comparison of trends in well behaviour shown by actual measurements with trends in behaviour established theoretically. The flow rate contributions of individual layers are determined from cumulative measurements made above successive layers by a flowmeter moved vertically within a wellbore. Experimental curves are derived that represent the relative variations in time of the flowrates of layers or groups of layers in the formation using flowrate measurement points obtained when a total flowrate variation has been imposed on the well at a given time between two given constant values. These experimental curves then compared to theoretical model curves established for various values of the characteristic parameters of a subterranean formation, to determine values of the parameters of the formation.
514443
Schlumberger Canada Limited
Smart & Biggar
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