113results about "Viscometer maintainance" patented technology

A couette viscometer used to determine the rheological properties of Newtonian or non-Newtonian solid-laden or non-solid-laden fluids used as completion or treatment fluids in oil and / or gas wells. The instrument is capable of measuring the properties of a heated, e.g., 600° F. / 316° C., and pressurized sample, e.g., 30,000 psig / 207 MPa, at a variety of temperatures, pressures, and shear rates. The pressure vessel is mounted in the chassis of the instrument and the vessel plug containing the viscometer components and sample may be removed as an assembly. This arrangement reduces the mass of the plug assembly, eliminating the need to transport the pressure vessel and assists in separating the sample from the pressurizing fluid. Ultimately, this arrangement improves the usability, convenience and maintenance associated with operating the instrument.

System and methods are described for dynamically controlling operation of a rheometer. A program is created on a programming interface for executing a test upon a sample in a rheometer by receiving user selections of a plurality of nodes and connections of each node to another node according to directional connection indicators. Nodes indicate steps for performing a test upon a sample or configuring a rheometer for performing a test upon a sample. Scripts are created for generating a sequence of instructions to the rheometer. The scripts include instructions for performing steps indicated by each of the selected nodes and in accordance with the directional connection indicators. Low-level instructions are downloaded from the scripts for execution in the rheometer, and drivers in the rheometer are instructed for performing the downloaded instructions.

The invention relates to a transformer device comprising a transformer housing (100), a pipe (10), a temperature sensor (71), and a temperature sensor (72). The pipe is arranged within a cavity of the transformer housing such that, between an inner surface (100+) of a wall of the transformer housing facing the cavity and a shell surface (10#) of a wall of the pipe facing the cavity, an intermediate chamber (100') is formed. Furthermore, the pipe is designed to conduct a fluid (FL1) in the lumen thereof such that an inner surface (10+) of the wall of the pipe facing said lumen contacts the fluid conducted in the lumen. Each of the temperature sensors (71; 72) is formed by a temperature sensor (711; 721) arranged within the intermediate chamber (100') and by a coupling element (712; 722) coupling the temperature sensor (711; 721) to the wall of the pipe in a thermally conductive manner and is additionally designed to detect a measurement point temperature ([theta]1; [theta]2), namely a temperature at a first or second temperature measurement point formed by the temperature sensor (711; 721) and to transform said temperature into a corresponding temperature measurement signal ([theta]1; [theta]2), namely an electrical measurement signal representing the measurement point temperature ([theta]1; [theta]2).

A pressure differential meter (13) measures and the volume flow rate of a liquid (6) and a Coriolis meter (14) monitors the density of the liquid (6). When the density as monitored by the Coriolis meter (14) indicates that density is reaching the range limit of the pressure differential meter (13), the pressure differential meter (13) is re-calibrated.

A method of determining rheological properties of a fluid. The method includes: providing an open-bore tube and defining within the bore a three dimensional grid (3DG) of voxels; defining at least an inlet cross section (ICS) and an outlet cross section (OCS); defining a volume of interest within the bore between the ICS and the OCS; obtaining rheological properties of the fluid; applying a pressure gradient to the bore between the ICS and the OCS; and nuclear magnetic resonance imaging the fluid within the volume of interest to determine various aspects of the fluid.

An apparatus for checking a need for maintenance of a viscometer measuring consistency of suspension comprises a rigid rod and an elongated cavity in a measuring arm of the viscometer. The rigid rod is matched with the cavity for the rod to be movable in the cavity. The cavity is configured to become mismatched with respect to the rod in response to a bending of the measuring arm, the mismatch indicating a need for maintenance of the viscometer.

The method comprising the steps of engaging the flow circuit of the detector with a reference fluid, accepting a sample in the flow circuit of the detector, sensing an attribute of the sample for determining a characteristic of the sample, changing the direction of the flow of the sample in the flow circuit, and purging the sample from the flow circuit such that the flow circuit is ready to accept another sample. Another method provides the steps of engaging the flow circuit of the detector with a reference fluid, inserting a sample in the flow circuit juxtaposed to the reference fluid, sensing an attribute of the sample for determining a characteristic of the sample, and deviating the direction of the flow of the sample from the flow circuit for purging the sample from the flow circuit such that the reference fluid is maintained in the flow circuit.The apparatus comprises a detector for analyzing a sample comprising a reference cell and a sample cell such that the detector is charged with a reference fluid, a switching valve in communication with the sample cell of the detector, and one or more delay volumes and the reference cell in communication with the switching valve. The sample is juxtaposed the reference fluid for engaging the sample cell for analysis, the analyzed sample engages the switching valve for alternately diverting the analyzed sample from the flow circuit and for maintaining the detector charged with the reference fluid.

A method is provided for monitoring a flow behavior of mixed components without requiring additional instrumentation or sampling. The method is carried out by determining ratios of the power required to rotate a mixing impeller at different rotational speeds and then comparing the ratios. Characteristics about the mixed components are determined based on differences between the ratios.

A rheometer and method of making rheological measurements is disclosed, in which a sample is supported between plates and an alternating movement is applied by a driver, support rod and plate. Force and displacement measurements are taken and the property determined from those measurements. The vibrating signal which is applied is in the form of a frequency sweep signal having a monotonic group delay function. The top plate is provided with a surface which causes a meniscus to form up a side edge of the plate to reduce the spring nature of the sample when the movement is supplied to the sample, and a supporting rod which supports the top plate is preferably formed from a material having a low coefficient of thermal expansion so that the gap between the plates is maintained substantially constant if the sample is heated to take measurements at different temperatures.