Abstract: A vibrating wire viscometer and cartridge for the same are provided. The cartridge includes a body member with a flowline for passing fluid, an electrically conductive wire disposed in the flowline, first and second electrically conductive posts, and a connector having first and second electrically conductive terminals. The first and second posts are mechanically coupled to the body member to hold the wire in tension within the flowline. The first and second terminals are connected to the first and second posts for applying an alternating electric current to the wire, respectively.

Abstract: A vibrating wire viscometer and cartridge for the same are provided. The cartridge includes a body member with a flowline for passing fluid, an electrically conductive wire disposed in the flowline, first and second electrically conductive posts, and a connector having first and second electrically conductive terminals. The first and second posts are mechanically coupled to the body member to hold the wire in tension within the flowline. The first and second terminals are connected to the first and second posts for applying an alternating electric current to the wire, respectively.

Abstract: A method of acquiring viscosity of a downhole fluid is provided. The downhole fluid is in a downhole tool positionable in a wellbore penetrating a subterranean formation. The method involves obtaining a viscosity signal of the downhole fluid using a vibrating wire viscometer of the downhole tool, and acquiring viscosity parameters of the viscosity signal. The acquiring involves adjusting the viscosity signal by removing offsets from the viscosity signal, generating a complex signal from the adjusted viscosity signal, obtaining a low frequency component of the complex signal by filtering the complex signal into a high frequency component and the low frequency component and removing the high frequency component, and determining the viscosity parameters from the low frequency component.

Abstract: Methods and systems for acoustically determining reservoir parameters of subterranean formations. A tool comprising a plurality of acoustic sources and configured for acoustic measurements is deployed within a wellhole. Acquired acoustic data are processed and utilized for deriving key parameters for the formations. The plurality of acoustic sources include a plurality of hammer sources, where at least one of the hammer sources includes an actuator that is adapted to strike a surface to generate acoustic energy.

Abstract: Methods and systems of measuring in-situ time variant temperature for subsurface formations utilizing an active heating and/or cooling device and temperature sensors for purposes of characterizing hydrocarbon-bearing formations by deriving formation thermal properties.

Abstract: Methods and systems for acoustically determining reservoir parameters of subterranean formations. A tool comprising a plurality of acoustic sources and configured for acoustic measurements is deployed within a wellhole. Acquired acoustic data are processed and utilized for deriving key parameters for the formations.

Abstract: A method for in-situ calibrating acoustic receivers while the tool is in an open or cased borehole or during a logging run in a borehole. The method and system facilitate calibrating the acoustic receivers while they are mounted to a downhole acoustic tool. Calibrating the acoustic receivers in situ provides more accurate results than previously available. The method and system provide separate compensation factors for the acoustic receivers at different frequencies and for different transmission sources. The separate compensation factors facilitate more accurate signal acquisition over a wider range of conditions.

Abstract: A method and system for calibrating acoustic receivers. The method and system facilitate calibrating the acoustic receivers while they are mounted to a downhole acoustic tool. Calibrating the acoustic receivers in situ provides more accurate results than previously available. The method and system provide separate compensation factors for the acoustic receivers at different frequencies and for different transmission sources. The separate compensation factors facilitate more accurate signal acquisition over a wider range of conditions.

Abstract: Methods and systems of measuring in-situ time variant temperature for subsurface formations utilizing an active heating and/or cooling device and temperature sensors for purposes of characterizing hydrocarbon-bearing formations by deriving formation thermal properties.