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:
Aug. 20, 1985
Filed:
Nov. 09, 1983
Keith K Millheim, Terlton, OK (US);
Tom M Warren, Coweta, OK (US);
Standard Oil Co. (Indiana), Chicago, IL (US);
Abstract
A system for controlling the vertical movement of a drillstring and which is removably interconnected with a conventional drill rig. The system includes at least one fluidic cylinder and piston assembly removably connected at an upper end to a support, such as the rig's traveling block assembly, and at a lower end to the drillstring. A pump is operatively connected to the cylinder and piston assembly and a control valve device is provided to control the flow of the fluid to and from the cylinder and piston assembly. A computing device is in operative communication with a data measurement system and the control valve device and is used to automatically control the movement of the drillstring in response to data, such as WOB, received from the data measurement system.