Christopher Daniel Dempsey

US Patent:

20200123896, Apr 23, 2020

Filed:

Oct 15, 2019

Appl. No.:

16/653277

Inventors:

- Houston TX, US
Alexander J. DARNLEY - Houston TX, US
Wei TIAN - Houston TX, US
Christopher DEMPSEY - The Woodlands TX, US
Brandon HAMILTON - Houston TX, US

International Classification:

E21B 47/10
G01F 1/704

Abstract:

A method for normalizing a chemical tracer response in a zone can include measuring a concentration of the tracer as produced from a proximal zone, measuring a concentration of a reference tracer as produced from the proximal zone, and applying a mathematical correction to a concentration of the tracer as produced from the zone. Another method can include normalizing a chemical tracer concentration to a reference tracer concentration, and then allocating flow to a zone corresponding to the tracer based on the normalized tracer concentration. Another method can include injecting a first chemical tracer into a first wellbore reference zone and into additional producing zones of the first wellbore, injecting a second chemical tracer into a second wellbore reference zone and into additional producing zones of the second wellbore, and injecting a third chemical tracer into each of the additional producing zones of the first and second wellbores.

US Patent:

20200124451, Apr 23, 2020

Filed:

Oct 15, 2019

Appl. No.:

16/653575

Inventors:

- Houston TX, US
Alexander J. DARNLEY - Houston TX, US
Mitchell C. SMITHSON - Pasadena TX, US
Christopher DEMPSEY - The Woodlands TX, US

International Classification:

G01F 1/704

Abstract:

A method to allocate single-phase fluid flow rate in a flowline system, the fluid flowing from multiple sources into a common collector. The method can include pulse injection of one or more tracers into the flowline system, and measurement of the tracer concentration downstream. The tracer concentration detection can be performed after the fluids from multiple sources commingle together. The mean transit time for each tracer can be calculated by applying the method of moments. The flow rate from each source can be further calculated by listing and solving all tracers' transport equations.

US Patent:

20190202866, Jul 4, 2019

Filed:

Dec 12, 2018

Appl. No.:

16/217284

Inventors:

- Houston TX, US
Nicole THADANI - Houston TX, US
Christopher DEMPSEY - Houston TX, US

Assignee:

WILLIAM MARSH RICE UNIVERSITY - Houston TX

International Classification:

C07K 14/005

Abstract:

Provided herein are recombinant viral nanoparticles (VNPs) which comprise truncated viral proteins. The VNPs may be mosaic VNPs which are activatable at desired levels. The VNPs may be used to administer therapeutic agents to target cells.