EP 0298828 B1 19901003 - APPARATUS FOR REMOTELY CONTROLLING THE RELATIVE ORIENTATION OF TWO PIECES OF A PIPE STRING
Title (en)
APPARATUS FOR REMOTELY CONTROLLING THE RELATIVE ORIENTATION OF TWO PIECES OF A PIPE STRING
Publication
Application
Priority
FR 8709230 A 19870630
Abstract (en)
[origin: US4836303A] The device comprises a variable-angle elbow coupling (14) interposed between the ends (12, 13) of two successive sections of a column. The coupling (14) comprises a first rectilinear tubular element (14a) and a second rectilinear tubular element (14b) connected to the element (14a) and mounted to be rotatable relative to the element (14a) about an axis (16). The axis of the tubular element (14) makes a non-zero angle with the axis (18) of the first section of the column. The end portions of the elements (14a, 14b) are radially offset relative to the axis (18) of the column and connected to the first section (12) and the second section (13) respectively by detachable rigid tubular elbow couplings (15a, 15b). The device of the invention is applicable to a drilling column.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
E21B 7/067 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB IT NL
DOCDB simple family (publication)
EP 0298828 A1 19890111; EP 0298828 B1 19901003; CA 1294604 C 19920121; DE 3860741 D1 19901108; FR 2617533 A1 19890106; FR 2617533 B1 19940211; NO 302428 B1 19980302; NO 882909 D0 19880629; NO 882909 L 19890102; US 4836303 A 19890606
DOCDB simple family (application)
EP 88401619 A 19880624; CA 570603 A 19880628; DE 3860741 T 19880624; FR 8709230 A 19870630; NO 882909 A 19880629; US 21308888 A 19880629