Krishna K Panthi

RESUME

Krishna K Panthi

Research Associate

Office Address: 200 E. Dean Keeton St., Stop C0300, Austin, TX 78712-1585

Office: CPE 4.128

Email address: kpanthi@austin.utexas.edu

Office Phone Number: 512-471-9352

Mobile Phone Number: 419-377-2661

LinkedIn URL: https://www.linkedin.com/in/krishnapanthi12/

JPG of Photo (Mug Shot):

 

Research Highlight: SP Surfactant Formulation for Carbonate Reservoir at Harsh Condition

The research work I have been doing now is targeting a carbonate reservoir at 100C. The reservoir is of low permeability of the order of about 50-100 mD. By injecting water the oil recovery obtained was less than 50% OOIP. My goal is to use surfactant formulation which forms ultralow interfacial tension between water and oil so that the trapped oil in the matrix can be mobilized and the oil recovery will boost up more than 98% OOIP in lab scale. As the surfactant I have been working are environmental friendly, there would not be and safety and environmental concern with the use of these chemicals.

Current Research Project Summaries:

Project A: SP formulation for highly viscous oil sandstone reservoir

This research work I have been working is an unconsolidated sandstone reservoir with the permeability of about 5 Darcy at 70C. The oil viscosity is 10,000cP at room temperature and 370cP at the reservoir temperature. By injecting water the oil recovery obtained was less than 50% OOIP. The goal is to use very simple commercially available surfactant formulation which forms low interfacial tension or ultralow interfacial tension between water and oil so that the trapped oil in the matrix can be mobilized and the oil recovery would be achieved more than 98% OOIP in lab scale. Our target was to use one surfactant SP formulation which gives low IFT but not necessarily ultralow IFT to get out all the oil from the reservoir. The surfactant we designed were very simple co-solvent type of surfactants which recovered all of the oil out in lab scale from a sand pack of about 7 Darcy or higher. As the surfactant I have been working are environmental friendly, there would not be and safety and environmental concern with the use of these chemicals.

Project B: SP and ASP formulations for carbonate reservoir of 116C at harsh condition

This reservoir is very similar carbonate reservoir to the reservoir I discussed earlier but the temperature is further higher. The oil is very difficult to work with and the oil has lot of wax. The research work I have been doing now is targeting a carbonate reservoir at 116C. The reservoir is of low permeability of the order of about 50 mD. By injecting water the oil recovery obtained was about 50% OOIP. My goal is to use surfactant formulations which forms ultralow interfacial between water and oil so that the trapped oil in the matrix can be mobilized and the oil recovery will increase more than 98% OOIP in lab scale. Our target is to use the surfactants that are environmental friendly, so that there would not be and safety and environmental concern with the use of such surfactants.

Project C: Surfactant partitioning in to the oil

In general, our goal is to work with non-ionic surfactants to find ultralow IFT or low IFT with oil. The surfactant adsorption of non-ionic surfactants is relatively higher than that of ionic surfactants. I want to find out exact surfactant adsorption in a rock. For this we need to know the surfactant partition in to the oil. If surfactant partition more in to the oil, we will get higher surfactant retention value. I want to study the factors that determine the higher retention value for non-ionic surfactants by studying surfactant partitioning in to the oil, static and dynamic surfactant adsorption so that we can best estimate the surfactant adsorption in a rock.

Other research areas I had/have been working with:

·         Phase behavior study for ultralow IFT between oil and water

·         Synthesis of surfactants such as anionic surfactants and  Gemini surfactants

·         Polymer composites of sand

·         Polymeric nanoparticles

·         Polymer composite of magnetic nanoparticles

·         Gas flood, WAG, and PWAG

·         Preformed particle gel

·         Delay of acid release

·         Delay of particles release

·         Viscoelastic surfactants i.e.; wormlike surfactants

·         Acid diverting systems