A method for calculating unstable water invasion amount of a fracture-cavity reservoir by utilizing an instantaneous equation

The invention discloses a method for calculating unstable water invasion amount of a fracture-cavity reservoir by utilizing an instantaneous equation. The method comprises the following steps: firstly, obtaining relevant parameters according to daily measurement data of an oil and gas field; Solving...

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Bibliographic Details
Main Authors WANG XIAO, SUN JIANFANG, XIAO FENGYING, ZHU GUILIANG, LI MINQI, PAN LIN
Format Patent
LanguageChinese
English
Published 21.06.2019
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The invention discloses a method for calculating unstable water invasion amount of a fracture-cavity reservoir by utilizing an instantaneous equation. The method comprises the following steps: firstly, obtaining relevant parameters according to daily measurement data of an oil and gas field; Solving the liquid collecting speed by utilizing a formula; Calculating a water invasion coefficient according to the initial formation pressure and the formation pressure at any mining time by utilizing a formula; And finally, calculating the water invasion amount according to the annular water layer function, the dimensionless time, the oil layer outer radius, the porosity, the comprehensive compression coefficient and the water viscosity by utilizing a formula. The invention provides the method forcalculating the unstable water invasion amount of the fracture-cavity type oil reservoir by establishing the instantaneous equation, the method can solve the problem of quantitative water invasion amount of the fracture-cavit
Bibliography:Application Number: CN201910161366