A rheology device comprises an elongated body having a flow path defined therein, first and second pressure lines in communication with the first and second ends of the flow path, respectively, and a differential pressure sensor for measuring a difference in pressure between the first and second pressure lines. In embodiments, the pressure lines are filled with a spacer fluid different from the fluid in the flow path. Based on at least three measurements of difference in pressure and corresponding flow rates, a yield point, a consistency factor, and a power factor can be calculated, and a rheology model of the fluid can be generated. Related methods are described which allow fluid rheology models to be determined and updated frequently. The device and methods herein may be useful in oil and gas operations, for example for rheology and hydraulic modeling in drilling operations.

Provided is a method for determining whether a post-consumer recycled (PCR) resin is an easily extrudable PCR resin by adding the PCR resin to a capillary rheometer and quantifying a volume value measured when a pressure is increased to a certain level, which is a method for providing determination information of the easily extrudable PCR resin.

Provided is a method for determining whether a post-consumer recycled (PCR) resin is an easily extrudable PCR resin by adding the PCR resin to a capillary rheometer and quantifying a volume value measured when a pressure is increased to a certain level, which is a method for providing determination information of the easily extrudable PCR resin.

A method of determining viscosity can include connecting a bypass flow passage in parallel with a main flow passage, connecting a mass flowmeter and a variable flow restrictor in the bypass flow passage, and connecting at least one viscometer to the bypass flow passage. A rheology measurement apparatus can include a bypass flow passage connected in parallel with a main flow passage, a mass flowmeter connected in the bypass flow passage, and a pipe viscometer connected in the bypass flow passage. Another bypass flow passage may be connected in parallel with the main flow passage, with another mass flowmeter connected in the second bypass flow passage.

A method of determining viscosity can include connecting a bypass flow passage in parallel with a main flow passage, connecting a mass flowmeter and a variable flow restrictor in the bypass flow passage, and connecting at least one viscometer to the bypass flow passage. A rheology measurement apparatus can include a bypass flow passage connected in parallel with a main flow passage, a mass flowmeter connected in the bypass flow passage, and a pipe viscometer connected in the bypass flow passage. Another bypass flow passage may be connected in parallel with the main flow passage, with another mass flowmeter connected in the second bypass flow passage.

A methodology and system determine properties of a sample substance, such as a liquid/foam used to control sweep homogeneity problems in an earth formation. The methodology and system utilize a core of formation simulation material placed in a container. An injection system is coupled to the container and enables placement of both the sample substance and an injection fluid into the container. The injection fluid is injected under pressure and moves the sample substance through the core. A data acquisition system is employed to measure parameters such as pressure differentials along the core as the sample substance propagates through the formation simulation material. The pressure differentials may be evaluated over time by the data acquisition system to determine fluid breakthrough properties of the sample substance.

A method and device for ascertaining at least one variable regarding a state of a brake fluid in a brake system of a vehicle includes a device determining a volume flow variable regarding a volume flow, which flows via a simulator separation valve into a simulator by taking into account at least one displacement speed variable regarding a displacement speed of a brake pedal/rod piston; determining a simulator internal pressure variable regarding a simulator internal pressure by taking into account at least one pedal travel variable regarding a pedal travel; determining a pressure difference variable regarding a pressure difference at the simulator separation valve by taking into account the simulator internal pressure variable and an admission pressure variable regarding an admission pressure; and determining at least one variable by taking into account the at least one determined volume flow variable and the at least one determined pressure difference variable.

A viscometer cell attachment device which greatly improves efficiency, accuracy, precision, and safety when testing viscosity of a substance with a viscometer. The viscometer cell attachment device generally allows dangerous, high pressure, potentially explosive/flammable methane/fluids in a viscometer cell to be partially removed and contained safely, sheared by a constriction member, generally comprised of a length of OD tubing, which generates foams/emulsions, and then put back in the viscometer cell. The invention can be attached to some types of viscometers. It can handle methane safely and can be used to produce homogeneous methane/fluids foams/emulsions by repeating the process.

A viscometer cell attachment device which greatly improves efficiency, accuracy, precision, and safety when testing viscosity of a substance with a viscometer. The viscometer cell attachment device generally allows dangerous, high pressure, potentially explosive/flammable methane/fluids in a viscometer cell to be partially removed and contained safely, sheared by a constriction member, generally comprised of a length of OD tubing, which generates foams/emulsions, and then put back in the viscometer cell. The invention can be attached to some types of viscometers. It can handle methane safely and can be used to produce homogeneous methane/fluids foams/emulsions by repeating the process.

A method for verifying a density and/or viscosity measuring device in a measuring station of a process installation during ongoing operation, in which a medium flows through a main channel of the process installation, comprising steps: providing a side channel, which is connected as a bypass of the main channel, wherein the side channel is fluidically connected to the main channel via two regions of the main channel with mutually differing diameters; providing a MEMS-based master or control density measuring device in the side channel such that the MEMS-based master or control density measuring device is flowed through by the medium; performing at least one verification measurement with the MEMS-based master or control density measuring device; and verifying the density and/or viscosity measuring device based on the at least one verification measurement performed by the MEMS-based master or control density measuring device.