Jay M Turner

US Patent:

8201628, Jun 19, 2012

Filed:

Apr 12, 2011

Appl. No.:

13/084841

Inventors:

James R. Lovorn - Tomball TX, US
Emad Bakri - Houston TX, US
Jay K. Turner - Humble TX, US
Ryan G. Ezell - Spring TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 21/00
E21B 21/08
E21B 33/13

US Classification:

166292, 166 53, 166285, 166290, 166294, 166387, 175 25, 175 72

Abstract:

A method of controlling pressure in a wellbore can include placing a barrier substance in the wellbore while a fluid is present in the wellbore, and flowing another fluid into the wellbore while the first fluid and the barrier substance are in the wellbore. The first and second fluids may have different densities. Another method can include circulating a fluid through a tubular string and an annulus formed between the tubular string and the wellbore, then partially withdrawing the tubular string from the wellbore, then placing a barrier substance in the wellbore, then partially withdrawing the tubular string from the wellbore and then flowing another fluid into the wellbore. A well system can include at least two fluids in a wellbore, the fluids having different densities, and a barrier substance separating the fluids.

US Patent:

8261826, Sep 11, 2012

Filed:

Apr 26, 2012

Appl. No.:

13/457108

Inventors:

James R. Lovorn - Tomball TX, US
Emad Bakri - Houston TX, US
Jay K. Turner - Humble TX, US
Ryan G. Ezell - Spring TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 21/00
E21B 21/08
E21B 33/13
E21B 44/00

US Classification:

166287, 166 53, 166285, 166290, 166292, 166386, 178 57, 178 72

Abstract:

A method of controlling pressure in a wellbore can include placing a barrier substance in the wellbore while a fluid is present in the wellbore, and flowing another fluid into the wellbore while the first fluid and the barrier substance are in the wellbore. The first and second fluids may have different densities. Another method can include circulating a fluid through a tubular string and an annulus formed between the tubular string and the wellbore, then partially withdrawing the tubular string from the wellbore, then placing a barrier substance in the wellbore, then partially withdrawing the tubular string from the wellbore and then flowing another fluid into the wellbore. A well system can include at least two fluids in a wellbore, the fluids having different densities, and a barrier substance separating the fluids.

US Patent:

20120103610, May 3, 2012

Filed:

Jan 6, 2012

Appl. No.:

13/345546

Inventors:

Jay Kirkwood TURNER - Humble TX, US
Randolph LOVORN - Tomball TX, US

Assignee:

HALLIBURTON ENERGY SERVICES, INC. - Houston TX

International Classification:

E21B 33/13
E21B 33/12

US Classification:

166290, 166192

Abstract:

A method of segregating flowable materials in conjunction with a subterranean well can include segregating flowable cement from a fluid by placing a flowable barrier substance between the cement and the fluid, and the barrier substance substantially preventing displacement of the cement by force of gravity through the barrier substance and into the fluid. Another method of segregating flowable materials can include flowing a barrier substance into a wellbore above a fluid already in the wellbore, and then flowing cement into the wellbore above the barrier substance. A system for use in conjunction with a subterranean well can include a flowable cement isolated from a fluid by a flowable barrier substance positioned between the cement and the fluid, whereby the barrier substance substantially prevents displacement of the cement by force of gravity through the barrier substance and into the fluid.