Micromotion Gmbh

Frederick Scott Schollenberger

Joel Weinstein

Martin Andrew Schlosser

Mark James Bell

David John Shepherd

A mode splitter () for a balance bar () of a Coriolis flow meter () is disclosed. The mode splitter () comprises a mass portion (), and a first coupling portion () coupled to the mass portion (). The first coupling portion () has a first stiffness in a drive direction (Y) and a second stiffness direction in an orthogonal direction (Z), and the orthogonal direction (Z) is orthogonal to both the drive direction (Y) and a longitudinal direction of the balance bar (). The second stiffness is different than the first stiffness.

Mode splitting resonator for coriolis flowmeter balance bar

Coriolis direct wellhead measurement devices and methods are provided. The devices and methods allow for continuous monitoring, more frequent data, and greater accuracy in quantitative and qualitative measurements of well performance. In an embodiment: an entrained gas severity of a wellhead is determined based on a determined drive gain threshold, at least one variable is output based on the determined entrained gas severity, and a respective confidence indicator correlating to the at least one variable is output. One mode of operation includes continually averaging the at least one variable over a predetermined time interval and outputting a respective single averaged data value. Another mode of operation includes outputting at least one instantaneous variable at predetermined and uniform time intervals. Diagnostic information and user alerts are also output to provide reliable decision making information to an operator.

Coriolis direct wellhead measurement devices and methods

A vibratory meter () including a multi-channel flow tube () is provided. The vibratory meter () includes a meter electronics () and a meter assembly () communicatively coupled to the meter electronics (). The meter assembly () includes the multi-channel flow tube () comprising two or more fluid channels () surrounded by a tube wall (). The two or more fluid channels () and tube wall () comprise a single integral structure. A driver () is coupled to the multi-channel flow tube (). The driver () is configured to vibrate the multi-channel flow tube (). The two or more fluid channels () and tube wall () are configured to deform in the same direction as the single integral structure in response to a drive signal applied to the driver ().

Multi-channel flow tube

A method for operating a vibratory flowmeter () is provided. The method includes placing a process fluid in the vibratory meter () and measuring entrained gas in the process fluid. A measurement confidence level is determined for at least one operating variable.

Flowmeter measurement confidence determination devices and methods

A meter electronics () for a flowmeter () configured to receive a process fluid is provided. The meter electronics () includes an interface () configured to communicate with a flowmeter assembly of the flowmeter () and to receive a vibrational response. The meter electronics () comprises a drive gain threshold determination routine () configured to determine a first predetermined drive gain threshold (), monitor a drive gain signal over a predetermined time period, and determine lowest points in the drive gain signal over the predetermined time period. A second drive gain threshold is determined based upon reaching a predetermined number of instances of low points of the drive gain signal.

Coriolis threshold determination devices and methods

A flowmeter is provides that includes a sensor assembly and meter electronics. The flowmeter comprises one or more rigid flow tubes, a driver coupled to the flow tubes that is oriented to induce a drive mode vibration in the flow tubes. Two or more strain gages are coupled to the one or more rigid flow tubes and oriented to sense tension and compression of the flow tubes. One or more bridge circuits is in electrical communication with the two or more strain gages, wherein outputs of the bridge circuits are proportional to a strain detected by at least one of the strain gages.

Vibrating flowmeter and related methods

A method for determining fluid characteristics of a multicomponent fluid is provided. The method includes a step of measuring a first density, &#x3c1;, of a multicomponent fluid comprising one or more incompressible components and one or more compressible components at a first density state. The method further includes a step of adjusting the multicomponent fluid from the first density state to a second density state. A second density, &#x3c1;, of the multicomponent fluid is then measured at the second density state and one or more fluid characteristics of at least one of the compressible components or the incompressible components are determined.

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Boulder, CO, United States of America

Frederick Scott Schollenberger