GB218774A - Improvements in underreamers - Google Patents

Improvements in underreamers

Info

Publication number
GB218774A
GB218774A GB11109/23A GB1110923A GB218774A GB 218774 A GB218774 A GB 218774A GB 11109/23 A GB11109/23 A GB 11109/23A GB 1110923 A GB1110923 A GB 1110923A GB 218774 A GB218774 A GB 218774A
Authority
GB
United Kingdom
Prior art keywords
head
cutters
bridles
spring
reamer
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB11109/23A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB11109/23A priority Critical patent/GB218774A/en
Publication of GB218774A publication Critical patent/GB218774A/en
Expired legal-status Critical Current

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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/325—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools the cutter being shifted by a spring mechanism

Abstract

218,774. Arbon, P. April 24, 1923. Bore - hole apparatus. - An under - reamer for drilling wells has a removable c o r e 31 located within body 1, the core receiving the lateral thrust of cutters 14 and being reversible when worn. The body is connected by bridles 2 to a sleeve 3, and the cutters slidably engage ribs on the upper parts of the bridles, and are retained in position by a head 19, having lugs 18 engaging shoulders 17. The head is forced upwards by a spring 37 acting upon a nut 26, which is adjustable on a draw bar 27 connected to the head. The cutters can slide downwards between the bridles till the shoulders 17 clear the tapered end of the core 31, whereupon they can swing inwards to allow of the passage of the reamer through the well casing. The spring returns the cutters to their operative position when they have passed below the end of the casing and may be aided by another spring located below the head 19. The sleeve 3 serves as a cage to catch a cutter should it break, and thereby obviates the neccessity of fishing operations. A liey 9 can be screwed into the end of the drawbar 27 so that the latter can be pulled downwards when the cutters are to be removed for sharpening or renewal, the head being rotated so that the lugs 18 engage recesses in the bridles and prevent the return of the head to its normal position.
GB11109/23A 1923-04-24 1923-04-24 Improvements in underreamers Expired GB218774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB11109/23A GB218774A (en) 1923-04-24 1923-04-24 Improvements in underreamers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11109/23A GB218774A (en) 1923-04-24 1923-04-24 Improvements in underreamers

Publications (1)

Publication Number Publication Date
GB218774A true GB218774A (en) 1924-07-17

Family

ID=9980203

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11109/23A Expired GB218774A (en) 1923-04-24 1923-04-24 Improvements in underreamers

Country Status (1)

Country Link
GB (1) GB218774A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002072994A1 (en) * 2001-03-12 2002-09-19 Halliburton Energy Services, Inc. Reamer
US6690796B1 (en) 1995-05-17 2004-02-10 The Chamberlain Group, Inc. Rolling code security system
US6926099B2 (en) 2003-03-26 2005-08-09 Varel International, L.P. Drill out bi-center bit and method for using same
US6929076B2 (en) 2002-10-04 2005-08-16 Security Dbs Nv/Sa Bore hole underreamer having extendible cutting arms
US7658241B2 (en) 2004-04-21 2010-02-09 Security Dbs Nv/Sa Underreaming and stabilizing tool and method for its use
US7975783B2 (en) 2004-06-09 2011-07-12 Halliburton Energy Services, Inc. Reaming and stabilization tool and method for its use in a borehole
US10652743B2 (en) 2017-12-21 2020-05-12 The Chamberlain Group, Inc. Security system for a moveable barrier operator
US10862924B2 (en) 2005-06-30 2020-12-08 The Chamberlain Group, Inc. Method and apparatus to facilitate message transmission and reception using different transmission characteristics
US10944559B2 (en) 2005-01-27 2021-03-09 The Chamberlain Group, Inc. Transmission of data including conversion of ternary data to binary data
US10997810B2 (en) 2019-05-16 2021-05-04 The Chamberlain Group, Inc. In-vehicle transmitter training
US11074773B1 (en) 2018-06-27 2021-07-27 The Chamberlain Group, Inc. Network-based control of movable barrier operators for autonomous vehicles
US11423717B2 (en) 2018-08-01 2022-08-23 The Chamberlain Group Llc Movable barrier operator and transmitter pairing over a network

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6690796B1 (en) 1995-05-17 2004-02-10 The Chamberlain Group, Inc. Rolling code security system
WO2002072994A1 (en) * 2001-03-12 2002-09-19 Halliburton Energy Services, Inc. Reamer
US6929076B2 (en) 2002-10-04 2005-08-16 Security Dbs Nv/Sa Bore hole underreamer having extendible cutting arms
US6926099B2 (en) 2003-03-26 2005-08-09 Varel International, L.P. Drill out bi-center bit and method for using same
US7658241B2 (en) 2004-04-21 2010-02-09 Security Dbs Nv/Sa Underreaming and stabilizing tool and method for its use
US7975783B2 (en) 2004-06-09 2011-07-12 Halliburton Energy Services, Inc. Reaming and stabilization tool and method for its use in a borehole
US10944559B2 (en) 2005-01-27 2021-03-09 The Chamberlain Group, Inc. Transmission of data including conversion of ternary data to binary data
US11799648B2 (en) 2005-01-27 2023-10-24 The Chamberlain Group Llc Method and apparatus to facilitate transmission of an encrypted rolling code
US10862924B2 (en) 2005-06-30 2020-12-08 The Chamberlain Group, Inc. Method and apparatus to facilitate message transmission and reception using different transmission characteristics
US10652743B2 (en) 2017-12-21 2020-05-12 The Chamberlain Group, Inc. Security system for a moveable barrier operator
US11122430B2 (en) 2017-12-21 2021-09-14 The Chamberlain Group, Inc. Security system for a moveable barrier operator
US11778464B2 (en) 2017-12-21 2023-10-03 The Chamberlain Group Llc Security system for a moveable barrier operator
US11074773B1 (en) 2018-06-27 2021-07-27 The Chamberlain Group, Inc. Network-based control of movable barrier operators for autonomous vehicles
US11763616B1 (en) 2018-06-27 2023-09-19 The Chamberlain Group Llc Network-based control of movable barrier operators for autonomous vehicles
US11423717B2 (en) 2018-08-01 2022-08-23 The Chamberlain Group Llc Movable barrier operator and transmitter pairing over a network
US11869289B2 (en) 2018-08-01 2024-01-09 The Chamberlain Group Llc Movable barrier operator and transmitter pairing over a network
US10997810B2 (en) 2019-05-16 2021-05-04 The Chamberlain Group, Inc. In-vehicle transmitter training
US11462067B2 (en) 2019-05-16 2022-10-04 The Chamberlain Group Llc In-vehicle transmitter training

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