Systems and methods for determining fluid rheological characteristics of a fluid used in a subsurface operation are provided. The methods include measuring temperature, pressure, and at least one of a flow rate and a flow velocity of the fluid in a first fluid circuit. A model is based on the temperature, the pressures, and the flow rate or flow velocity. The fluid rheological characteristic of the fluid in a second fluid circuit is determined by measuring a temperature and flow rate and/or flow velocity in the second fluid circuit. The rheological characteristic of the fluid is calculated based on the model employing the temperature and the flow rate/flow velocity of the second fluid circuit.

The present disclosure provides a method of measuring an extensional viscosity of a polymer melt and a capillary injection system. The method includes the operations of: based on a weighted GNF viscosity model, obtaining a viscosity profile of the polymer melt according to a transport equation, a Navier Stokes equation, and a Trouton function; measuring a pressure drop of the polymer melt; obtaining a general viscosity of the polymer melt from the viscosity profile according to the pressure drop, wherein the general viscosity comprises a shear viscosity of the polymer melt and the extensional viscosity of the polymer melt; and extracting the extensional viscosity from the general viscosity.

A method of measuring the viscosity of a resin in a bottom-up additive manufacturing apparatus, includes the steps of: (a) providing an additive manufacturing apparatus including a build platform and a light transmissive window, said build platform and said window defining a build region there between, with said window carrying a resin; (b) advancing said build platform and said window towards one another until said build platform contacts said resin; (c) detecting the force exerted on said build platform by said resin; and (d) generating in a processor a viscosity measure of said resin from said detected force.

The invention relates to an automatic measuring system and a use method thereof for drilling fluid parameters measurement under high temperature and high-pressure conditions. The system is composed of six parts: i. mud container, used both for test drilling fluid preparation and the tested samples collection; ii. heat jacket, which is arranged on the outer surface of the fluid tank and used to keep the drilling fluid in the tank warm by heating; iii. heat exchanger, receive the test drilling fluid from the tank and heat it to simulate the practical conditions; iv. plunger pump, which is used to pump the test drilling fluid to the flowing test device; v. moveable test device, used to simulate the flowing states of drilling fluid in the borehole annulus and drilling string, and also measure the pressure and flow rate of drilling fluid in the inlet and outlet of the test device; vi. control module, which can automatically measure rheological parameters and obtain the best rheological mode of the drilling fluid in the borehole annulus and drilling string based on the inversion of instantaneous pressure and flow rate. With the invention system, the accuracy of rheological parameters measurement can be significantly improved.

A method of measuring the viscosity of a resin in a bottom-up additive manufacturing apparatus, includes the steps of: (a) providing an additive manufacturing apparatus including a build platform and a light transmissive window, said build platform and said window defining a build region there between, with said window carrying a resin; (b) advancing said build platform and said window towards one another until said build platform contacts said resin; (c) detecting the force exerted on said build platform by said resin; and (d) generating in a processor a viscosity measure of said resin from said detected force.

A system for analyzing a fluid includes an in-line sensor configured to analyze a fluid flowing past the in-line sensor to determine at least one in-line value of a fluid parameter of the fluid across an event period, and a sample sensor configured to analyze a sample of fluid extracted from the flow of fluid during the event period, to determine sample value of the fluid parameter for the sample. At least one processor is provided, configured to determine a representative in-line value of the fluid parameter across the event period based at least in part on the at least one in-line value, and determine an overall representative value of the fluid parameter across the event period based on the representative in-line value, the sample value for the sample, and one or more of the in-line values corresponding to the time of extracting the sample, wherein determination of the overall representative value is based on an error correction value determined for the in-line sensor during the event period.

Disclosed herein are water monitoring systems comprising a water condition monitor and a controller in communication with a water heater system. The controller can be configured to receive baseline water data, which can be indicative of one or more water properties measured by the water condition monitor and determine a normal operating range for each of the one or more water properties based on the baseline water data. The controller can receive operational water data from the water condition monitor and compare the operational water data to the normal operating range to detect an anomaly. The anomaly can be indicative of a value of the one or more water properties being outside of the normal operating range. In response to detecting the anomaly, the controller can output instructions for performing one or more corrective actions to correct the anomaly.

Methods and systems for forming 3D articles by vat photopolymerization processes in which resin viscosities are determined both prior to the commencement of the build process and, optionally, during the build process by measuring the torque required to raise and lower a build plate within the resin in the vat. The resin may be heated, and its viscosity thereby altered, by heating the resin in the vat using a light engine employed for fabricating the 3D articles.

A device and a method for rapid detection of blood viscosity based on an ultrasonic guided wave of a micro-fine metal tube are provided. The device comprises a blood sampling unit and a blood sampling electrical circuit that are electrically connected with each other and a device shell; the sample feeding tube and the sample discharging tube are respectively arranged at two sides of the device shell, the inlet of the sampling tube is communicated with the outside of the device shell, the outlet of the sampling tube is communicated with the inlet of the blood micro-flow pump through the micro-fine metal tube, the outlet of the blood micro-flow pump is communicated with the inlet of the sample discharging tube, and the outlet of the sample discharging tube is communicated with the outside of the device shell; the magnetostrictive component is arranged outside the micro-fine metal tube.

The present invention provides a device and a method for measuring overburden of injected gas in cyclic gas injection development of condensate gas reservoir. The device comprises sand packed model and temperature control system. The temperature control system is nested outside the sand packed model. The sand packed model comprises sand pack cell, four gas inlets, four gas outlets, bracket, direction control component, rotating shaft, upper cover, lower cover, fixing bolts, two top pressuring inlets, pressure transmission rods, pressure transfer piston and multiple gas sampling ports. The sand pack cell can be filled with quartz sand of different particle size and composition, and the angle of the whole device is adjusted by the direction control component.