43 results about "Porous media flow" patented technology

A fluid sample extraction device is disclosed comprising a housing defining an internal fluid passage having a distal open end and a proximal open end and a porous medium within the fluid passage, between the distal open end and proximal open end. The porous medium, which may be glass, is configured to allow fluid flow in the fluid passage to flow around the porous medium, toward the proximal open end of the housing, when fluid is drawn from the distal open end toward the proximal open end, and to allow fluid in the fluid passage to flow toward the distal open end of the housing, through the porous medium when the fluid is forced toward the distal open end. The porous medium is also configured to capture nucleic acids in the porous medium from the fluid when fluid is forced through the porous medium. Devices and kits are also disclosed.

A system for thermal cycling a material to be thermal cycled including a microfluidic heat exchanger; a porous medium in the microfluidic heat exchanger; a microfluidic thermal cycling chamber containing the material to be thermal cycled, the microfluidic thermal cycling chamber operatively connected to the microfluidic heat exchanger; a working fluid at first temperature; a first system for transmitting the working fluid at first temperature to the microfluidic heat exchanger; a working fluid at a second temperature, a second system for transmitting the working fluid at second temperature to the microfluidic heat exchanger; a pump for flowing the working fluid at the first temperature from the first system to the microfluidic heat exchanger and through the porous medium; and flowing the working fluid at the second temperature from the second system to the heat exchanger and through the porous medium.

A combined injection and production method includes establishing a production well and an injection well into a hydrocarbon-bearing formation; introducing a mixture of a surfactant, a co-surfactant and a carrier fluid into each of the production well and the injection well so that the mixture flows into porous media surrounding the production well and the injection well; holding the mixture in the porous media surrounding the production well in the presence of water for a period of time sufficient to form a water film on surfaces of the porous media surrounding the production well; and injecting an injection fluid into the injection well while producing from the production well, whereby hydrocarbons flow from the porous media around the injection well toward the production well.

The invention provides a test system and method of fluid non-linear percolation characteristics in a low-permeability porous media. The test system comprises a plurality of test branches, wherein, each test branch comprises a displacement pressure output unit for providing different pressures to transfer displacing fluid to a test core, a pressure measuring unit for the pressure of the displacingfluid output by the displacement pressure output unit, a flowing unit for accommodating the test core and providing ring crush to the test core, a flow measuring unit for measuring the flow of the displacing fluid flowing through the test core, and a thermostatically control unit for providing a constant ambient temperature for the flowing unit and the flow measuring unit. By adopting the thermostatically control unit, the influence of variation in temperature to the test results is eliminated, so that the test results are accurate.

The invention discloses a porous medium flow measurement device for nanoemulsions, which includes a sample preparation system, a sample introduction system and a measurement system; the sample preparation system includes a first sampling pump, a first water storage, a second sampling pump, a Two water reservoirs, the first intermediate container, the second intermediate container, the first mixing chamber, the second mixing chamber, the third sampling pump, the fourth sampling pump, the fourth water storage, the fourth intermediate container, and a mechanical mixer , electromagnetic heating stirrer and magnet; the sampling system includes the sixth sampling pump, the sixth water storage, the sixth intermediate container, the seventh intermediate container, valve one, valve two, fifth sampling pump and multi-way valve The measurement system includes a core holder, a core, a pressure acquisition system, a pressure gauge, an eighth sampling pump, an eighth water storage, a pressure gauge two, a valve three and a metering container. The present invention also provides a measurement method for the porous medium flow of the nanoemulsion by using the above-mentioned device. The invention improves the reproducibility, accuracy and usability of flow experiment data.