The present disclosure provides a device and method for measuring viscosity of acid natural gas with high precision and a wide temperature range. The device is based on the theoretical basis of gas measurement of double-capillary method. Ground conditions (low temperature and low pressure) or formation conditions (high temperature and high pressure) can be simulated by presetting different temperatures and pressures. The viscosity change of acid gas with changes in temperature and pressure is measured. The device has fewer measuring steps, is easy to operate and has high precision, and can provide valid reference data for actual projects or experiments.

A method for measuring fluid flow including disposing a measurement device within a fluidic channel, the measurement device including a hydrodynamic central body, a plurality of arms coupled with and operable to extend from and retract to the hydrodynamic central body, and a plurality of sensors disposed within the hydrodynamic central body and distributed along the length of each of the plurality of arms; triggering, via an actuator, the plurality of arms to expand from the hydrodynamic central body until a portion of each of the plurality of arms abut a sidewall of the fluidic channel; collecting, via the plurality of sensors, measurements relating to one or more fluid flow parameters within the fluidic channel; triggering, via the actuator, the plurality of arms to contract inwards to the hydrodynamic central body; and retracting the measurement device from the fluidic channel.

A method for measuring fluid flow including disposing a measurement device within a fluidic channel, the measurement device including a hydrodynamic central body, a plurality of arms coupled with and operable to extend from and retract to the hydrodynamic central body, and a plurality of sensors disposed within the hydrodynamic central body and distributed along the length of each of the plurality of arms; triggering, via an actuator, the plurality of arms to expand from the hydrodynamic central body until a portion of each of the plurality of arms abut a sidewall of the fluidic channel; collecting, via the plurality of sensors, measurements relating to one or more fluid flow parameters within the fluidic channel; triggering, via the actuator, the plurality of arms to contract inwards to the hydrodynamic central body; and retracting the measurement device from the fluidic channel.

The present disclosure describes methods and systems for analyzing drilling fluid rheology at a drilling site. One method includes obtaining, from a wellbore drilling system implementing a wellbore drilling operation at a wellbore drilling site, a sample of a drilling fluid being used in the wellbore drilling operation at the wellbore drilling site; flowing the sample through an elongated tubular member at a plurality of different flow rates, the elongated tubular member installed at the wellbore drilling site; measuring, at the wellbore drilling site and at each flow rate, a stress-strain response of the sample in response to each flow rate; generating a plurality of stress-strain responses for the sample at the corresponding plurality of different flow rates, the plurality of stress-strain responses including each stress-strain response of the sample measured at each flow rate; and returning the sample to the wellbore drilling operation.

The present disclosure describes methods and systems for analyzing drilling fluid rheology at a drilling site. One method includes obtaining, from a wellbore drilling system implementing a wellbore drilling operation at a wellbore drilling site, a sample of a drilling fluid being used in the wellbore drilling operation at the wellbore drilling site; flowing the sample through an elongated tubular member at a plurality of different flow rates, the elongated tubular member installed at the wellbore drilling site; measuring, at the wellbore drilling site and at each flow rate, a stress-strain response of the sample in response to each flow rate; generating a plurality of stress-strain responses for the sample at the corresponding plurality of different flow rates, the plurality of stress-strain responses including each stress-strain response of the sample measured at each flow rate; and returning the sample to the wellbore drilling operation.

A grease property measurement device includes a flow pipe having a first end that communicates with an inside of a rolling bearing such that grease discharged from the rolling bearing flows through the flow pipe; a reservoir unit including an inlet port to which a second end of the flow pipe is connected such that the grease is introduced from the flow pipe through the inlet port, a reservoir chamber which stores the grease introduced through the inlet port, and a discharge port through which the grease is discharged from the reservoir chamber; an extrusion mechanism configured to push the grease in the reservoir chamber so as to discharge the grease through the discharge port; and a measuring unit configured to measure flow resistance at a time when the extrusion mechanism pushes the grease in the reservoir chamber.

A system for performing inline measurements of flow rate, density, and rheology of a flowing fluid is disclosed, comprising: (a) a rheology measurement subsystem comprising: a horizontal tube of internal radius r.sub.H; means for measuring a velocity profile of a test fluid flowing through said horizontal tube at a distance x.sub.0 from its upstream end; and means for determining wall shear stress at a boundary between said flowing fluid and an inner surface of said horizontal tube; (b) a density measurement subsystem comprising: a vertical tube of internal radius r.sub.V in fluid connection with said horizontal tube; a pressure sensor for measuring the pressure of said test fluid within said vertical tube at a location y.sub.1; and, (c) a pressure sensor for measuring the pressure of said test fluid within said vertical tube at a location y.sub.2 downstream from y.sub.1 and displaced vertically from y.sub.1 by a distance h.

A system for performing inline measurements of flow rate, density, and rheology of a flowing fluid is disclosed, comprising: (a) a rheology measurement subsystem comprising: a horizontal tube of internal radius r.sub.H; means for measuring a velocity profile of a test fluid flowing through said horizontal tube at a distance x.sub.0 from its upstream end; and means for determining wall shear stress at a boundary between said flowing fluid and an inner surface of said horizontal tube; (b) a density measurement subsystem comprising: a vertical tube of internal radius r.sub.V in fluid connection with said horizontal tube; a pressure sensor for measuring the pressure of said test fluid within said vertical tube at a location y.sub.1; and, (c) a pressure sensor for measuring the pressure of said test fluid within said vertical tube at a location y.sub.2 downstream from y.sub.1 and displaced vertically from y.sub.1 by a distance h.

The present invention relates to the field of liquid viscosity measurement using a capillary tube. The invention pertains to novel methods that use surface tension driven flow for the measurement of viscosity of a liquid over a range of shear rates.

The present invention relates to the field of liquid viscosity measurement using a capillary tube. The invention pertains to novel methods that use surface tension driven flow for the measurement of viscosity of a liquid over a range of shear rates.