Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

65 results about "Co presence" patented technology

What is Co-presence. 1. The practice of people engaging in real-time face-to-face social activities and being engrossed in the here and now of that social activity, but also being virtually present and via texting or mobile messaging with dual occupation of real and virtual space.

Method for judging wettability of reservoir rock

The invention provides a method for judging the wettability of a reservoir rock. The method comprises the following steps of: measuring free relaxation time of oil and water respectively; measuring transverse relaxation time of the oil and the water in saturated states respectively; measuring a nuclear magnetic resonance signal of the reservoir rock in the co-presence of an oil phase and a water phase by using nuclear magnetic resonance technology and recording an oil saturation value and a water saturation value in the co-presence of the oil phase and the water phase; dipping the rock core of the reservoir rock in the co-presence of the oil phase and the water phase in more than or equal to 20,000 ppm paramagnetic solution, waiting for at least 48 hours and separating the nuclear magnetic resonance signal of the reservoir rock in the co-presence of the oil phase and the water phase to obtain the transverse relaxation time of the oil and the water reflecting the size of an oil wet area and a water wet area; and calculating a wettability index in the co-presence of the oil phase and the water phase according to the free relaxation time of the oil and the water, the transverse relaxation time of the oil and the water in the saturated states, the transverse relaxation time of the oil and the water, the oil saturation value and the water saturation value so as to judge the wettability of the reservoir rock.
Owner:PETROCHINA CO LTD

Suspension liquid-state iron-containing composite reagent as well as preparation method thereof and method for efficiently removing selenate in water

The invention discloses a suspension liquid-state iron-containing composite reagent as well as a preparation method thereof and a method for efficiently removing selenate in water and belongs to the technical field of water treatment. The method for efficiently removing selenate in water comprises the following three steps: step one, preparing the suspension liquid-state iron-containing composite reagent from zero-valence iron powder, water, hydrogen peroxide and hydrochloric acid; step two, removing selenate by using the suspension liquid-state iron-containing composite reagent, and integrally adding the prepared suspension liquid-state iron-containing composite reagent containing a solid phase, a colloidal phase and a liquid phase into selenate-containing water to be treated; and step three, carrying out solid-liquid separation. The suspension liquid-state iron-containing composite reagent has the advantages that the iron-containing composite reagent is simple to prepare and low in cost of raw materials, the iron-containing composite reagent contains a plurality of reduction active components, the removal of selenic acid through a reduction method is facilitated, and the iron-containing composite reagent is rich in colloidal phase and high in efficiency of transferring mass with solution, has both adsorption and flocculation effects, is capable of efficiently removing selenate, can still efficiently operate in the co-presence of anions such as high-concentration sulfate radicals and the like, is especially applicable to high-salt selenium-containing wastewater, is environmental-friendly, and is free of secondary pollution.
Owner:NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products