Global Patent Index - EP 3023575 A1

EP 3023575 A1 20160525 - DRILL STRING ROD WITH SHOULDER

Title (en)

DRILL STRING ROD WITH SHOULDER

Title (de)

BOHRSTRANGSTANGE MIT SCHULTER

Title (fr)

TIGE DE TRAIN DE TIGES AVEC ÉPAULEMENT

Publication

EP 3023575 A1 (EN)

Application

EP 14194246 A

Priority

EP 14194246 A

Abstract (en)

A drill string rod (100) and a drill string assembly that includes a drill rod (100) and a drill bit (112) in which the rod comprises a threaded male end (103) and a female end (102). An axially extending shoulder (110) is provided at the male end and comprises an axial length (L A ) being greater than an outside diameter (D A ) of the shoulder to provide a shoulder driven rod exhibiting enhanced guidance to achieve straighter holes and better collaring.

IPC 8 full level

E21B 17/042 (2006.01); E21B 1/00 (2006.01); E21B 17/00 (2006.01); E21B 17/04 (2006.01)

CPC (source: CN EP US)

E21B 1/00 (2013.01 - CN EP US); E21B 17/00 (2013.01 - CN EP); E21B 17/04 (2013.01 - EP); E21B 17/042 (2013.01 - US); E21B 17/0426 (2013.01 - CN EP); E21B 17/16 (2013.01 - US)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3023575 A1 20160525; AU 2015348706 A1 20170518; BR 112017010617 A2 20180214; CA 2965868 A1 20160526; CL 2017001287 A1 20171215; CN 107002467 A 20170801; MX 2017006589 A 20171214; PE 20171231 A1 20170824; RU 2017121599 A 20181221; RU 2017121599 A3 20190215; US 2017321496 A1 20171109; WO 2016079013 A1 20160526; ZA 201702931 B 20191030

DOCDB simple family (application)

EP 14194246 A 20141121; AU 2015348706 A 20151113; BR 112017010617 A 20151113; CA 2965868 A 20151113; CL 2017001287 A 20170518; CN 201580063020 A 20151113; EP 2015076502 W 20151113; MX 2017006589 A 20151113; PE 2017000842 A 20151113; RU 2017121599 A 20151113; US 201515527778 A 20151113; ZA 201702931 A 20170426