Device and method for measuring parallel core foam flooding gas-phase shunt volume

A technology of gas phase split flow and foam generating device, which is applied in the direction of measuring device, volume measuring instrument/method, measuring capacity, etc., and can solve the problem that the volume cannot be directly measured
CN102865898AActive Publication Date: 2013-01-09CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (EAST CHINA)
Publication Date
2013-01-09

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Abstract

The invention relates to a device for measuring parallel core foam flooding gas-phase shunt volume. The device mainly comprises a foam generating device, an intermediate container for containing formation water, an intermediate container for containing crude oil, a thermostat, core barrels and a data acquiring system, wherein weighing sensors are arranged at the bottom of produced liquid collectors, and are used for monitoring the weight of separated liquid of outlets of the core barrels; and wide-mouth bottles are connected with the produced liquid collectors through gas meters. By the device, the gas-phase shunt volume of parallel cores can be independently measured in real time in a parallel core foam flooding process. Produced liquid at outlet ends of the parallel cores is subjected to gas-liquid separation, and the gas-phase shunt volume of the outlet ends of the parallel cores is measured by using a specific device. Moreover, the device can also be used for measuring the weight of separated liquid of the outlets of the parallel cores, and profile control shunt conditions of foam on high and low permeable formations in the parallel cores under different injection rates can be analyzed by combing liquid injection quantity and change of pressure at two ends of each of the parallel cores.
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Description

technical field

[0001] The invention relates to a device and a method for measuring the fractional flow rate of the foam-driven gas phase of parallel rock cores, and belongs to the technical field of petrochemical industry. Background technique

[0002] Foam has a high apparent viscosity in the formation, defoams when it meets oil, is stable when it meets water, has selective sealing ability for oil and water, and has higher seepage resistance in parts with higher water saturation. The resistance factor increases with the permeability. Therefore, it can effectively block the medium and high permeability parts and improve the sweep coefficient. At the same time, the foaming agent is generally a surfactant with excellent performance, which can reduce the oil-water interfacial tension to a certain extent. Therefore, foam control and flooding can not only improve the sweep efficiency, but also increase the oil displacement efficiency, and it is a promising method for enhancing o...

Claims

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