Derek L Carter

US Patent:

20130133876, May 30, 2013

Filed:

Nov 14, 2012

Appl. No.:

13/676238

Inventors:

UTEX Industries, Inc. - Houston TX, US
Derek L. Carter - Houston TX, US
Wesley P. Michalcik - Hallettsville TX, US

Assignee:

UTEX Industries, Inc. - Houston TX

International Classification:

E21B 43/16

US Classification:

166101, 166373

Abstract:

A fracture plug seat assembly used in well stimulation for engaging and creating a seal when a plug, such as a ball, is dropped into a wellbore and landed on the fracture plug seat assembly for isolating fracture zones in a well. The fracture plug seat assembly has a fracture plug seat that includes elastomeric material and reinforcing material.

US Patent:

20130299199, Nov 14, 2013

Filed:

May 6, 2013

Appl. No.:

13/887779

Inventors:

Derek L. CARTER - Houston TX, US

International Classification:

E21B 43/14

US Classification:

166386, 166 53

Abstract:

A specially designed rotary indexing system and associated operational methods are incorporated in a downhole control device, representatively a sliding sleeve valve, having an outer tubular member in which an annular plug seat is coaxially disposed. The plug seat is resiliently expandable between a first diameter and a larger second diameter and is illustratively of a circumferentially segmented construction. The rotary indexing system is operative to detect the number of plug members that pass through and diametrically expand the plug seat, and responsively preclude passage of further plug members therethrough when such number reaches a predetermined magnitude. Such predetermined magnitude is correlated to the total rotation of an indexing system counter ring portion rotationally driven by axial camming forces transmitted to the rotary indexing system by successive plug member passage-generated diametrical expansions of the plug seat.

US Patent:

20150191998, Jul 9, 2015

Filed:

Mar 24, 2015

Appl. No.:

14/666977

Inventors:

- Houston TX, US
Derek L. Carter - Houston TX, US

International Classification:

E21B 34/12

Abstract:

A specially designed rotary indexing system and associated operational methods are incorporated in a downhole control device, representatively a sliding sleeve valve, having an outer tubular member in which an annular plug seat is coaxially disposed. The plug seat is resiliently expandable between a first diameter and a larger second diameter and is illustratively of a circumferentially segmented construction. The rotary indexing system is operative to detect the number of plug members that pass through and diametrically expand the plug seat, and responsively preclude passage of further plug members therethrough when such number reaches a predetermined magnitude. Such predetermined magnitude is correlated to the total rotation of an indexing system counter ring portion rotationally driven by axial camming forces transmitted to the rotary indexing system by successive plug member passage-generated diametrical expansions of the plug seat.