06868906 is referenced by 90 patents and cites 354 patents.

A closed-loop system is used to perform a variety of well services. The well services include well completion services, production and maintenance services, and enhanced recovery services. A closed-loop system to complete an oil and gas well is an automated system under computer control that executes a sequence of programmed steps, but those steps depend in part upon information obtained from at least one downhole sensor that is communicated to the surface to optimize and/or change the steps executed by the computer to complete the well. A tractor conveyor with a Retrieval Sub is a tractor deployer that may be used to deploy completion devices and other devices within the wellbore to perform well services. The tractor deployer may be operated from a wireline, or from an umbilical. The umbilical may be made from composite materials and it may be a neutrally buoyant in any well fluids present. The umbilical provides power and data communications downhole. The umbilical may also be coiled tubing possessing electrical conductors. Other conveyance systems are provided to deploy completion devices and other devices within the wellbore to perform well services. The closed-loop system may also be used to monitor and control production of hydrocarbons from the wellbore.

Title
Closed-loop conveyance systems for well servicing
Application Number
10/162302
Publication Number
6868906 (B1)
Application Date
June 4, 2002
Publication Date
March 22, 2005
Inventor
James E Chitwood
Houston
TX, US
William Banning Vail III
Bothell
WA, US
Agent
Moser Patterson & Sheridan L
Assignee
Weatherford Lamb
TX, US
IPC
E21B 047/01
G05B 019/418
G05B 019/4068
E21B 007/20
E21B 007/20
E21B 010/32
E21B 010/60
E21B 023/00
E21B 023/00
E21B 007/20
E21B 019/00
E21B 019/00
E21B 010/66
E21B 043/10
E21B 007/06
E21B 019/16
E21B 019/16
E21B 019/16
E21B 019/16
E21B 023/00
E21B 023/00
E21B 004/18
E21B 017/14
E21B 033/14
E21B 007/06
E21B 007/20
E21B 007/20
E21B 007/20
E21B 007/18
E21B 007/06
E21B 043/00
E21B 044/06
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