WO2017074259A8 - System and method for engaging and disengaging drill bit or other device to downhole drive system - Google Patents

System and method for engaging and disengaging drill bit or other device to downhole drive system Download PDF

Info

Publication number
WO2017074259A8
WO2017074259A8 PCT/SG2016/050521 SG2016050521W WO2017074259A8 WO 2017074259 A8 WO2017074259 A8 WO 2017074259A8 SG 2016050521 W SG2016050521 W SG 2016050521W WO 2017074259 A8 WO2017074259 A8 WO 2017074259A8
Authority
WO
WIPO (PCT)
Prior art keywords
lower housing
housing
drive system
drill bit
castellations
Prior art date
Application number
PCT/SG2016/050521
Other languages
French (fr)
Other versions
WO2017074259A1 (en
Inventor
Andrew David MORIN
Peter James Lochore RAFFAN
Original Assignee
Turbodynamics Pte Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Turbodynamics Pte Ltd filed Critical Turbodynamics Pte Ltd
Publication of WO2017074259A1 publication Critical patent/WO2017074259A1/en
Publication of WO2017074259A8 publication Critical patent/WO2017074259A8/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)

Abstract

A drive system housing is provided with an engagement-disengagement mechanism that is advantageous to connect (make up) or disconnect (break out) drill bit or other device connection from the drive system housing. The drive system housing comprises: an upper housing and a lower housing connected thereto by a threaded connection provided at a first end of the lower housing, wherein the upper and the lower housing define an axis; and a plurality of castellations projecting substantially axially from a second end of the lower housing and circumferentially spaced around the axis, wherein at least partially unscrewing the threaded connection is configured to cause axial displacement of the lower housing towards a drive shaft which is coaxially positioned within the upper and the lower housing,and wherein the axial displacement of the lower housing towards the drive shaft is configured to compel the castellations of the lower housing into mating engagement with complementary castellations provided at the drive shaft.
PCT/SG2016/050521 2015-10-26 2016-10-25 System and method for engaging and disengaging drill bit or other device to downhole drive system WO2017074259A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG10201508821V 2015-10-26
SG10201508821V 2015-10-26

Publications (2)

Publication Number Publication Date
WO2017074259A1 WO2017074259A1 (en) 2017-05-04
WO2017074259A8 true WO2017074259A8 (en) 2017-11-09

Family

ID=58630982

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SG2016/050521 WO2017074259A1 (en) 2015-10-26 2016-10-25 System and method for engaging and disengaging drill bit or other device to downhole drive system

Country Status (1)

Country Link
WO (1) WO2017074259A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739842A (en) * 1984-05-12 1988-04-26 Eastman Christensen Company Apparatus for optional straight or directional drilling underground formations
CA2421227C (en) * 2001-07-30 2010-04-13 Smith International, Inc. Downhole motor lock-up tool
CA2898435C (en) * 2013-02-20 2016-06-07 Halliburton Energy Services, Inc. Downhole rotational lock mechanism
US9347269B2 (en) * 2013-03-05 2016-05-24 National Oilwell Varco, L.P. Adjustable bend assembly for a downhole motor
US9309721B2 (en) * 2013-03-12 2016-04-12 Mostar Directional Technologies Inc. Adjustable mud motor housing assembly

Also Published As

Publication number Publication date
WO2017074259A1 (en) 2017-05-04

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