초록 ▼

An apparatus for measuring the quantity and flow rate of liquids in a flowing fluid stream containing liquids and gases such as found in oil well production, with an optional controller for oil well pumps to control the pumping period or speed based on pump displacement. Total number of tank fill ev

An apparatus for measuring the quantity and flow rate of liquids in a flowing fluid stream containing liquids and gases such as found in oil well production, with an optional controller for oil well pumps to control the pumping period or speed based on pump displacement. Total number of tank fill events provide a precise measurement of total volume. Volumes are accumulated on a time base to determine flow rate and on the basis of strokes to determine pump displacement. Liquid measurement is accomplished without restriction to the flowing stream, even in the event of a valve failure. The filling of each tank with oil of low or high viscosity can be measured by level, hydrostatic pressure, or weight sensors. Measurement of total produced volumes are accumulated with the accuracy and repeatability needed when correlating producing wells with injection wells, and when diagnosing well problems. Flow rate or subsurface pump displacement is used to provide a means for pump-off control without the adjustment and calibration problems inherent in load sensing pump-off control systems. Combined pump-off and production measurements permit routine adjustment of idle-time when pumping period is controlled while flow and pump rates permit pump displacement measurements which are fundamental to effective speed control.

대표청구항 ▼

A liquid measurement apparatus for measuring liquid quantities in a fluid flow stream containing both liquids and gases and comprising two containers each of which has an inlet and outlet line for the flowing fluids and a connecting conduit between the two containers to allow any gases contained in

A liquid measurement apparatus for measuring liquid quantities in a fluid flow stream containing both liquids and gases and comprising two containers each of which has an inlet and outlet line for the flowing fluids and a connecting conduit between the two containers to allow any gases contained in said fluid flow stream to separate in either of said two containers to pass to the other while accumulating liquids in one of said two containers and a mechanism on the said inlet and outlet lines of the said two containers to alternately divert said flowing fluids to and from the said two containers such that fluid is flowing into one of said two containers while simultaneously discharging from the other and a sensing means located in each of the said two containers to detect when a quantity of liquids accumulate in the one of said two containers into which fluids are flowing and to provide a signal when said quantity of liquids has accumulated and a control and recording means to accept said signals alternately from both said sensing means to record said liquid quantity signals when liquids alternately accumulate in each of said two containers to divert said flowing fluids to and from the opposite of the said two containers when said control and recording means receives a signal from said sensing means from either of said two containers.