Disclosure to Promote the Right To Information

Transcription

1 इ टरन ट म नक 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. ज न1 क अ+धक र, ज 1 क अ+धक र Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live पर 1 क छ ड न' 5 तरफ Jawaharlal Nehru Step Out From the Old to the New IS 1118 (1985): square and hexagonal kellys for direct rotary drilling [MED 21: Diamond Core and Waterwell Drilling]! न $ एक न' भ रत क +नमण Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge! न एक ऐस खज न > ज कभ चर य नहB ज सकत ह ह Bhartṛhari Nītiśatakam Knowledge is such a treasure which cannot be stolen

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4 UDC IS:1118(Partl)1985 Indian Standard SPECIFICATION FOR KELLYS FOR DIRECT ROTARY DRILLING PART 1 SQUARE AND HEXAGONAL KELLYS 1. Scope Lays down the requirements for square and hexagonal kellys manufactured as a single piece used for transmitting the rotational movement from the rotary table to the drill stem. 2. Terminology 2.1 Upper Upset with the swivel. Cylindrical extremity of the kelly, having lefthand box connection for coupling 2.2 Lower Upset Cylindrical extremity of the kelly, having righthand pin connection for coupling with the drillpipe string, 2.3 Length of Drive Part of the kelly limited by the upper and lower upsets taking over the rotational movement from the rotary table. 3. Types Kellys are manufactured with either square or hexagonal drive section: a) Square kelly is designated as type S, and b) Hexagonal kelly is designated as type H. 4. Dimensions 4.1 Square Kellys The dimensions of square kelly shall be as specified in Table Hexagonal Kellys The dimensions of hexagonal kelly shall be as specified in Table Designation A kelly with square drive section of size 88 9 shall be designated as: Kelly 88 9 S IS : Material Kellys shall be manufactured from alloy steel conforming to 37Mn 2 or 4 Cr 1 of IS : I Schedules for wrought steels for general engineering purposes or equivalent having following properties after heat treatment. Yield stress, Min = 686 N/mm* Tensile strength, Min = 882 N/mm Minimum elongation on test specimen with L, = 5 65 &&, = 11 percent Longitudinal impact test ( mean on three specimen ) KU 3/2 = 5 J Transverse impact test KCU ( mean on three specimen ) KU 3/2 3 J Hardness, H/3, Min = General Requirements 7.1 The outside surface of the kellys shall be sound, free from cracks, slivers, laminations, inclusions or other visible defects liable to affect the quality and the strength of the kellys. 7.2 Heat Treatment Full length of kellys shall be treated. If agreed between the purchaser and the manufacturer, the heat treatment may be limited to two ends for lengths of approximately 1 5 mm. 7.3 Sfraightness Local deflections The local length deflection of kelly shall not exceed 1 mm12 mm length of kellys. Adopted 1 February 1985 November 1985, ISI I Gr 3 INDIAN STANDARDS INSTITUTION MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG inew DELHI 112

5 TABLE 1 DIMENSIONS OF SQUARE KELLYS ( Clause 4.1 ) All dimensions in millimetres. A L TERNATIVES Kelly Length Total Upper Box Connection Lower Pin Connection Inside Drive Section Mass Size of Length Dia ~ Drive Size and Style Outside Length Bevel Side and Outside Length Bevel meter Across Across Across Radius Radius Section Diameter Diameter Style Diameter Diameter Corners Corners Flats I ~ ~ _ LH Du f 8 Lu + DEN, f.4 RH DL f 8 LL d DC DCC DFL Rc R LD + 15* 172 L + I:* I6 o f 1 6 Ap;:oox kg Opt Opt Opt 4 ~ : REG 4f REG Q IF **O L REG 44 REG IF * REG 4+ REG IF ~ + 4 o ?

6 TABLE 2 DIMENSIONS OF HEXAGONAL KELLYS ( Clause 4.2 ) All dimensions in millimetres. W Length of Drive Section LD 127 Opt IDee4 A L TERNATIVES I T Total Upper Box Connection Lower Pin Connection Inside Drive Section Mast Length Dia Size and Style Outside Length Bevel Size Outside Length Beve I meter Across Across Across Radius Radius Diameter Diameter and ; biametel )iametel I Corners i Zorners Flats Style L I LH DU f 8 I &I DBL, d+ 1 6 DC Dco R Lu + 64 DBU f 4 RH f.6 f 4 f.8 froo.8 Aprrox kg ~. Opt % REG DPt 43 REG Opt Opt Q IF 85 7 LL T..4 &L St REG 44 REG IF ( 68 REG 44 REG IF

7 IS : 1118 ( Part 1 ) Total length deflection The total length deflection of kellys shall not exceed 5 mm per millimetre of length, Final reading of total deflection shall be rounded off to two decimal places in accordance with IS : 2196 Rules for rounding off numerical values ( revised ). 7.4 Threads Kelly threads shall be the continuity of the threads. free from tears, cuts and shoulders or any other defects which break The threads shall be electroplated or processed by some other acceptable method to minimize galling and corrosion damage Threading, gauging and inspection of threads shall be carried out according to Specification for rotary shouldered connections ( under preparation ). 7.5 If required by purchaser, kellys may be prov ided with box connection at the lower upset. 7.6 If agreed between the purchaser and the manufacturer kellys may be provided with weldon type joints. 6. Tests 8.1 Dimensional Tests Local deflection Local deflection in kellys shall be verified with a metallic ruler of 2 mm length Total length deflection The total length deflection shall be verified by placing both ends of the square kelly on two level supports and measuring the deflection of a side face. The kelly shall then be turned through 9 and deflection measured again on a side face Gauging of drive section The drive of kellys shall be gauged for dimensional accuracy using a sleeve gauge conforming to Table 3 for square and hexagonal kellys. TABLE 3 DIMENSIONS FOR SLEEVEGAUGE FOR SQUARE AND HEXAGONAL KELLYS All dimensions in millimetres. Nominal Size Lenbth s eevtgauge of Distance Across Flats D + O13 mm Fillet Radius R Square Hexagonal Square Hexagonal G I Note Tolerance on nominal included angles between flats : f Gauging of bore of kelly The bore of kelly shall be gauged with a drift mandrel 35 mm long, having minimum diameter equal to the nominal bore d minus 3.2 mm. 4

8 IS : 1118 ( Part 1 ) Mechanical Tests Sampling An additional lengthof 12 mm shall be left at the lower end of the kelly: This additional portion shall be cut off after heat treatment of kelly in order to Prepare test specimens as follows: a) Specimen for tensile tests hall have their axis approximately in the middle of the test portion, and b) Specimen for impact test shall be taken tangential to the bore Tensile test shall be carried out in accordance with IS : Method for tensile testing of steel products (first revision ), Impact test Three longitudinal impact test shall be carried out in accordance with IS : Method for Charpy impact test ( Unotch ) for metals ( first revision ) on specimen taken from one sample from a lot of IO kellys. A different number of longitudinal impact test can be conducted if agreed upon betwaen the purchaser and the manufacturer Transverse impact test shall be carried out in accordance with IS : in case of hot rolled kellys or if required specifically by the purchaser Hardness test Hardness test shall be carried out in accordance with IS : Method for brine11 hardness test for metallic materials ( second revision ). Five readings shall be made, one at each end and three more equally spaced along the length of kelly. In case heat treatment is limited to two ends ( see 7.2 ) two hardness readings shall be made one at each end Retests If a sample is rejected on inspection, all tests shall be repeated on a sample taken from a second kelly in the same lot If second sample is also rejected, each kelly shall be tested separately. 9. Marking Each kelly shall be die stamped as follows: a) On the upper upset with the mark of the manufacturer and the size and style of connection, and b) On the lower upset with the size and style of the connection. 9.1 ISI Certification Marking Details available with the Indian Standards Institution. 1. Packing 1.1 The threads of the kellys shall be covered with anticorrosive lubricant to protect the thread from damage under climatic conditions specified by the purchaser. 1.2 In addition, the kellys shall be provided with thread protectors. The design and material of the thread protectors shall be as agreed to between the purchaser and the manufacturer If required by purchaser the kelly may be supplied in metallic tubes provided inside with rigid supports. EXPLANATORY NOTE In the preparation of this standard considerable assistance has been derived from IS 2289: 1972 Rotary Drilling Equipment Kellys issued by the International Organization for Standardization. 5 Printed at New India Prlntino Press, Khurja, India

9 AMENDMENT NO. 1 OCTOBER 1987 TO IS:1118(Part SPECIFICATION FOR KELLYS FOR DIRECT ROTARY DRILLING PART 1 SQUARE AND HEXAGONALKELLYS (Page 1, title) Substitute the following for the existing title: 'Indian Standard SPECIFICATION FOR SQUARE AND HEXAGONAL, KELLYS FOR DIRECT ROTARY DRILLING' (Pages 1 to 5, designation) Delete 'Part 1' from the designation appearing at the top throughout. (EDC 88) Reprography Unit, ISI, New Delhi, Indi;