公开(公告)号：US3684872A

公开(公告)日：1972-08-15

申请号：US3684872D

申请日：1970-10-30

Applicant: TEXACO INC

Inventor： CLAUSET ALVIN O JR ,  HOYT DONALD L ,  HALL RUSSELL W JR

IPC: G06G7/42 ,  G06G7/57 ,  G06G7/48

CPC classification number: G06G7/57 ,  G06G7/42

Abstract: WHERE Vrx and Vry are the X and Y components, respectively, of the velocity of flow in the reservoir at a point r, Q is the rate of a forcing fluid entering the reservoir, i is the total current in the electrolytic solution, Phi is the effective porosity of the medium containing the reservoirs, Sv and Sh are the vertical and horizontal scale factors, respectively, of the reservoir to the model and ARE VOLTAGE GRADIENTS IN THE X and Y directions, respectively, at a point in the model corresponding to the point r in the reservoir. the velocities are used to compute the interface positions of the petroleum or gas and the fluid in the reservoir by determining each incremental change in distance Delta s for a point, commonly referred to as a trace point of the interface between the fluid and the petroleum or gas, in accordance with the following equation:
An insulated grid, having four electrode probes at each intersection, overlays an analog model, using an electrolytic solution, of a petroleum or gas reservoir so that some or all of the probes are immersed in the electrolytic solution. Electrodes representing an injection well and a withdrawal well in the reservoir introduce an alternating current in the electrolytic solution corresponding to the injection rate of a fluid in the injection well. Alternating current voltages present at the probes, resulting from the alternating current in the electrolytic solution, are processed to provide digital signals. The digital signals are applied to a digital computer which determines the fluid velocity at a point r of the reservoir in accordance with the following vector equations:

Abstract translation: 在每个交点处具有四个电极探针的绝缘栅格覆盖石油或气体储存器的电解溶液的模拟模型，使得一些或全部探针浸入电解溶液中。 在储存器中表示注入井和抽出井的电极在电解溶液中引入与注入井中的流体注入速率相对应的交流电。 由电解液中的交流产生的探针上存在的交流电压被处理以提供数字信号。 数字信号被施加到数字计算机，该数字计算机根据以下矢量方程确定储层的点r处的流体速度：

公开(公告)号：US3580335A

公开(公告)日：1971-05-25

申请号：US3580335D

申请日：1969-12-19

Applicant: TEXACO INC

Inventor： ALLEN JOSEPH C ,  BEDNARSKI VALERY N ,  HALL RUSSELL W JR

IPC: E21B43/16 ,  E21B43/22

CPC classification number: E21B43/16

Abstract: Improved oil recovery from an oil-bearing reservoir is obtained by a combination of solution gas drive and water flooding whereby the reservoir is produced by solution gas drive until the pressure of the reservoir is reduced below the bubble point pressure and a critical gas saturation is established, and thereafter the reservoir is produced by a water flood until the rate of oil production reaches a predetermined value or termination point, whereafter the cycle is repeated.