Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. इंटरनेट मानक “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda “Invent a New India Using Knowledge” “प0रा1 को छोड न’ 5 तरफ” Jawaharlal Nehru “Step Out From the Old to the New” “जान1 का अ+धकार, जी1 का अ+धकार” Mazdoor Kisan Shakti Sangathan “The Right to Information, The Right to Live” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता ह ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 15029 (2001): Recovery Taps for Use with Diamond Core Drilling - Requirements [MED 21: Diamond Core and Waterwell Drilling]
Transcript
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.
इंटरनेट मानक
“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda
“Invent a New India Using Knowledge”
“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru
“Step Out From the Old to the New”
“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan
“The Right to Information, The Right to Live”
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
“Invent a New India Using Knowledge”
है”ह”ह
IS 15029 (2001): Recovery Taps for Use with Diamond CoreDrilling - Requirements [MED 21: Diamond Core and WaterwellDrilling]
IS 15029:2001
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Indian Standard
RECOVERY TAPS FOR USE WITH DIAMOND COREDRILLING — REQUIREMENTS
ICS 73.100.30
—
BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
November 2001 Price Group 4
Diamond Core and Water Well Drilling Sectional Committee, ME21
FOREWORD
This Indian Standard was adopted by the Bureau of Indian Standards, after the dratl finalized by the DiamondCore and Water Well Drilling Sectional Committee had been approved by the Mechanical Engineering DivisionCouncil.
This standard is intended to initiate the technical requirements, performance and application of water swivel assembliesdeployed for diamond core drilling operations as normally practiced for mineral exploration and sinking of similarbore holes for other applications.
The composition of the Committee responsible for the formulation of this standard is given in Annex A.
For the purpose of deciding whether a particular requirement of this standard is complied with, the final value,observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance withIS 2:1960 ‘Rules for rounding off numerical values ( revised )’. The number of significant places retained in therounded off value should be the same as that of the specified value in this standard.
Indian Standard
RECOVERY TAPS FOR USE WITH
IS 15029:2001
DIAMOND COREDRILLING — REQUIREMENTS
1 SCOPE
This standard covers atypical shape, form and featuresof basic components, material requirements andarea of application for use of recovery taps indiamond core drilling operations.
2 REFERENCES
The following standards contain provisions, whichthrough reference in this text constitute provision ofthis standard. At the time of publication, the editionsindicated were valid. All standards are subject torevision, and parties to agreements based on thisstandard are encouraged to investigate the possibilityof applying the most recent editions of the standardsindicated below:
1S No.
1586:1988
4218(Part 1): 1976
5517:1993
10208:1982
Title
Method for Rockwell hardness testfor metallic material ( ScalesA-B-C-D-E-F-G-H-X ) (secondrevision )
ISO metric screw threads:Part 1 Basic and design profile(jht revision)
Steels for hardening andtempering — Specification ( secondrevision )
Specification for diamond cored;illing equipment
3 APPLICATION
The drill string comprising of drill pipes, core barrels,casings, bits, reaming shells, etc. sometimes get stucldsnapped in the bore hole and cannot be retrieved bynormal drilling procedures. Such stuck up equipmentis termed as ‘fish’ in drilling terminology. The toolsknown as ‘Recovery Taps’ are employed to recover
the fish. Atypical illustration of recovery tap is givenin Fig. 1.
FIG. 1 TYPICALILLUSTRATIONOFRECOVERYTAP
IS 15029:2001
4 GENERAL REQUIREMENTS
4.0 Recovery tap is a cylindrical tool with cuttingthreads on its tapered surface and a standard drill rodconnection on the top. The tapered surface has numberof ‘flutes’ along the length to provide flesh cuttingedges for generating new threads on the surface ofthe ‘fish’. The number of flutes vary from 3 to 6depending on the size of the tool.
4.1 The direction of threads on the connecting endand the taper end for recovery of the ‘fish’ shall besame, that is, right hand or left hand as the case maybe.
4.2 The recovery tap shall enter freely inside or overthe ‘fish’ ( in case of bell tap) for sufficient length inorder to have necessary alignment for firm grip. Thelength of taper is assigned accordingly.
4.3 The threads on the tapered surface shall conformto IS4218(Part l).
4.4 The tapered portion of the recovery tool shall becase hardened to have hardness in the range of 50 to55 HRC ( see IS 1586) while the plain parallel surface( upper portion) need not be hardened to ensure easyand efficient wrench grip for holding the tool.
5 CLASSIFICATION
The recovery taps are classified into various categoriesas per the following criterion:
a) Based on Application:
1) Male recovery tap — These have cuttingthreads on outer surface used to connectthe fish.
2) FemaIe recovery tap ( Bell tap ) —These have cutting threads on innersurface.
b) Based on Direction of Threads:
1)
2)
Right-hand recovery tap — Cuttingthreads are in clockwise direction.
Lej7-handrecove~ tap —Cuttingthreadsare in anti-clockwise direction. Theseare used while unscrewing the drill string.
c) Based on Size/Type of Fish:
1) Recovery taps for drill rods, drill rodcouplings.
2) Recovery taps for casings/core barrelassembly.
3) Recovery taps for cutting tools ( bits,reaming shells ).
6 MATERIAL
Recovery taps shall be made from alloy steelsconforming to steel designation 40Ni6Cr4M03 ofIS 5517. These shall be suitably case hardened tohave hardness on the taper surface in the range of50 to 55 HRC ( see IS 1586 ).
7 DIMENSIONS
7.1 The manufacturers, keeping in mind the criteriongiven in 4 shall work out the dimensional details fordifferent sizes of recovery taps. However, dimensionaldetails in respect of some sizes of recovery taps aregiven below for guidance:
a) Recovery taps for drill rods ( rod recoverytap ) ( see Table 1 ),
b) Recovery taps for casings ( casing recoverytap ) ( see Table 2 ), and
c) Female recovery tap for drill rods ( bell tap)( see Table 3 ).
7.1.1 For identification, symbols’given in Tables 1,2and 3 (see IS 10208 ).
8 MARKING
The recovery tap shall be marked with the followinginformation:
a)
b)
c)
d)
Name or trade-mark of the manufacturer,
Size of recovery tap,
Type namely recovery taps for drill rods/forcasings/cutting tools, and
SHRI M. L. CMOPRA,Director & Head (MED)[Representing Director General ( Ex-ofjkio )]
7
I
I-,
,1
Bureau of Indian Standards
BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification of goods andattending to connected matters in the country.
Copyright
BIS has the copyright of all its publications. No part of these publications maybe reproduced in any form withoutthe prior permission in writing of BIS. This does not preclude the free use, in the course of implementing thestandard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating tocopyright be addressed to the Director (Publications), BIS.
Review of Indian Standards
Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewedperiodically; a standard along with amendments is reaffirmed when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or edition by referring to the latest issueof ‘BIS Catalogue’ and ‘Standards : Monthly Additions’.
This Indian Standard has been developed from Doc : No. ME21 (278 ).
Amendments Issued Since Publication
Amend No. Date of Issue Text Affected
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