The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2003
Filed:
Feb. 22, 2000
Daniel G. Purkis, Cruden Bay, GB;
Brett W. Bouldin, Spring, TX (US);
Halliburton Energy Services, Inc., Dallas, TX (US);
Abstract
A well control system and associated method of controlling well tools provides downhole well tool control without requiring the use of electricity or complex pressure pulse decoding mechanisms. In a described embodiment, a digital hydraulic well control system includes multiple well tool assemblies, with each assembly including a well tool, an actuator and an addressable actuation control device. Multiple hydraulic lines are interconnected to each control device. The hydraulic lines transmit addresses or codes to respective selected ones of the control devices, thereby selecting corresponding respective ones of the well tools for actuation thereof. Hydraulic lines are also used to actuate the selected well tools.