IADC Drilling Manual Part 4 pptx

D-1 International Association of Drilling Contractors Chapter D: Drill Collars, Kellys, Subs, and Heavy Weight Drill Pipe Chapter D Drill Collars, Kellys, Subs and Heavy Weight Drill Pipe D-2 International Association of Drilling Contractors IADC Drilling Manual - Eleventh Edition Table of Contents - Chapter D Drill Collars, Kellys, Subs and Heavy Weight Drill Pipe Preface D-3 D1. Drill Collars: Specifications & Usage D-4 I. Specifications D-4 D2. Drill Collars: Care And Maintenance D-36 I. Recommended Drill Collar Care And Maintenance D-36 D3. Kellys: Specifications D-59 I. Specifications D-59 D4. Kellys: Care And Maintenance D-66 I. Care And Maintenance D-66 D5. Drill Stem Subs: Specifications D-71 I. Class And Type D-71 II. Dimensions For Type A & B Subs D-77 III. Dimensions For Type C (Swivel) Subs D-79 IV. Mechanical Properties Of Drill Stem Subs D-79 V. Kelly Saver Subs D-80 D6. Kelly Valves: Specifications D-81 I. Upper Kelly Cocks D-81 II. Lower Kelly Cocks D-85 III. Automatic Mud Saver Valves D-87 IV. Kelly Saver Subs D-87 D-7 Specifications Of Heavy Weight Drill Pipe D-88 Care and Maintenance of HWDP D-89 D8 - Glossary of Drill String Terms D-90 D-5 International Association of Drilling Contractors Chapter D: Drill Collars, Kellys, Subs, and Heavy Weight Drill Pipe Table D1-1 Drill Collar Dimensions D-6 International Association of Drilling Contractors IADC Drilling Manual - Eleventh Edition Notes on Table D1-1 * The drill collar number (column 1) consists of two parts separated by a hyphen. The first part is the connection number in the NC style. The second part, consisting of 2 (or 3) digits, indicates the drill collar outside diameter in units and tenths of inches. The connections shown in parentheses in column 1 are not a part of the drill collar number; they indicate inter- changeability of drill collars made with the standard (NC) connections as shown. If the connections shown in parentheses in column 1 are made with the V-0.038R thread, the connections and drill collars, are identical with those in the NC style. Drill collars with 8-1/4 and 9-1/2 inches outside diameters are shown with 6-5/8 and 7-5/8 REG connections, since there are no NC connections in the recommended bending strength ratio range. The drill collar sizes listed in Table D1-1 were adopted in order to provide a full range of collars with improved connections, as replacement for the collars with the various connections specified in previous editions of API Spec 7. Purchase orders for collars with the improved connections should state the drill collar number or size and style, bore and length. Purchase orders for collars with optional connections should state the outside diameter, bore, length, connection size and style, and bevel diameter. B. Mechanical Properties The mechanical properties of drill collars, as manufactured, should not be lower than the minimum values shown in Table D1-2. Table D1-2 Mechanical Properties and Tests of New Drill Collars Notes on Table D1-2 NOTE 1: Tensile properties shall be determined by tests on cylindrical specimens conforming to the requirements of the current ASTM A-370, .2% offset method. NOTE 2: Tensile specimens from drill collars shall be taken within 3 feet of the end of the drill collar in a longitudi- nal direction, having the centerline of the tensile specimen 1 inch from the outside surface or midwall, whichever is less. NOTE 3: Hardness test shall be on OD of drill collar using Brinell Hardness (Rockwell-C acceptable alternative) test methods in compliance with current ASTM A-370 requirements. D-7 International Association of Drilling Contractors Chapter D: Drill Collars, Kellys, Subs, and Heavy Weight Drill Pipe The latest edition of API Spec 7 should be consulted for method and location of tests. C. Bores All drill collar bores should be gaged with a drift mandrel 10 foot long. The drift mandrel should have a minimum diameter equal to the specified bore of the drill collar (standard or optional) minus 1/8 inch. D. Connections Drill collars should be furnished with box-and-pin connections in the sizes and styles stipulated in Table D1-1 and should conform with the requirements of API Spec 7, Section 9. Table D1-1 Drill Collar Dimensions E. OD Tolerances Drill collars having "hot rolled, mill finished" outside diameters should meet the following stipulations: 1) Outside Diameter: the outside diameter shall comply with the tolerances of Table D1-3. Table D1-3 Drill Collar OD Tolerances Notes on Table D1-3 * Out-of-Roundness is the difference between the maximum and minimum diameters of the bar, measured at the same cross-section, and does not include surface finish tolerances outlined in API Spec 7. 2) Surface Finish: The external surface of "hot rolled, mill finished" drill collars is to be the typical finish of hot rolled steel bars. Surface imperfections may be present, and may be removed by grinding. The removal of such imperfections should not result in stock removal in excess of that shown in Table D1-4. D-9 International Association of Drilling Contractors Chapter D: Drill Collars, Kellys, Subs, and Heavy Weight Drill Pipe Table D1-5 Drill Collar Weight (Steel DCs) D-10 International Association of Drilling Contractors IADC Drilling Manual - Eleventh Edition Values in the table may be used to provide the basic information required to calculate the weights of drill collar strings. G. Stress-Relief Features for Drill Collar Connections Table D1-6 Stress-Relief Features for Drill Collar Connections Notes on Table D1-6 * Numbered connections 23, 26 and 31 (2-3/8 IF and 2-7/8 IF) do not have sufficient metal to accommodate stress-relief features. Also See Figure D1-2a DC Connections - Stress Relief Features in Box Also See Figure D1-2b DC Connections - Stress Relief Features in Pin D-11 International Association of Drilling Contractors Chapter D: Drill Collars, Kellys, Subs, and Heavy Weight Drill Pipe H. Cold Working Thread Roots Gage standoff will change after cold working of threads. This will not affect the interchangeability of connections and will improve connection performance. It is therefore permissible for a connection to be marked with the API monogram if it meets the API specification before cold working. In such event, the connection should also be stamped with a circle enclosing 'CW' to indicate cold working after gaging. I. Selection of Connections Many drill collar connection failures are a result of bending stresses rather than torsional stresses. Following are bending strength ratio charts (Figures D1-3 through D1-9) which may be used for determining the most suitable connection to be used on new drill collars or for selecting the new connection to be used on collars which have been worn down on the outside diameter. D-14 International Association of Drilling Contractors IADC Drilling Manual - Eleventh Edition Figure D1-3 Bending Strength Ratios of 1-1/2" and 1-3/4" Drill Collars D-15 International Association of Drilling Contractors Chapter D: Drill Collars, Kellys, Subs, and Heavy Weight Drill Pipe Figure D1-4 Bending Strength Ratios of 2" and 2-1/4" Drill Collars [...]... Equation: Drill Collar Weight in Air = 55,000 x 1.15/(0.82) = 77,1 34 lbs Example If nine 8-inch drill collars weighing 4, 650 lbs each (total weight of 41 ,850 lbs), are to be run - how many 6-3 /4 inch weighing 3,000 lbs each would be needed to give 77,1 34 total air weight? 77,1 34 - 41 ,850 = 35,2 84 lbs required weight of 6-3 /4 drill collars 35,2 84 divided by 3,000 lbs/each = 11.76 or 12 drill collars Note:... International Association of Drilling Contractors D-39 Chapter D: Drill Collars, Kellys, Subs, and Heavy Weight Drill Pipe TD2-1b MU Torque for RS DC Connections, 3-1/2 IF 4- 1/2 MO International Association of Drilling Contractors D -41 IADC Drilling Manual - Eleventh Edition TD2-1c MU Torque for RS DC Connections, 4- 1/2 H90 6-5/8 API Reg D -42 International Association of Drilling Contractors Chapter.. .IADC Drilling Manual - Eleventh Edition Figure D1-5 Bending Strength Ratios of 2-1/2" Drill Collars D-16 International Association of Drilling Contractors Chapter D: Drill Collars, Kellys, Subs, and Heavy Weight Drill Pipe Figure D1-6 Bending Strength Ratios of 2-13/16" Drill Collars International Association of Drilling Contractors D-17 IADC Drilling Manual - Eleventh Edition... radius thread form D- 24 International Association of Drilling Contractors Chapter D: Drill Collars, Kellys, Subs, and Heavy Weight Drill Pipe Table D1-8 Pin Connection - Identification of Dimensions International Association of Drilling Contractors D-25 IADC Drilling Manual - Eleventh Edition Figure D1-10 Pin Connection - Identification of Dimensions D-26 International Association of Drilling Contractors... D-18 International Association of Drilling Contractors Chapter D: Drill Collars, Kellys, Subs, and Heavy Weight Drill Pipe Figure D1-8 Bending Strength Ratios of 3-1 /4" Drill Collars International Association of Drilling Contractors D-19 IADC Drilling Manual - Eleventh Edition Figure D1-9 Bending Strength Ratios of 3-1/2" Drill Collars D-20 International Association of Drilling Contractors Chapter D:... 121 /4" (311.2 mm) hole, 8-1 /4" (209.6 mm) OD in 9-7/8" (250.8 mm) hole, avoid B.S.R.'s above 3.20:1 or below 2.25:1 However, when low torque features are used on large drill collars, B.S.R.'s as large as 3 .40 :1 will perform satisfactorily 4) For very abrasive conditions where loss of OD is severe, favor combinations of 2.50:1 to 3.00:1 International Association of Drilling Contractors D-21 IADC Drilling. .. end of the arm * For 36" Tongs, Divide by 3 * For 48 " Tongs, Divide by 4 * For 54" Tongs, Divide by 4. 5 Example: EXAMPLE: For collars with 6-3 /4" O.D X 2-13/16 I.D and 5" E.H connections, the tables recommend 32,000 foot pounds of make-up torque Let's say your "effective" tong arm length is 48 ." See Figure - An Example of a Tong Arm 32,000 divided by 4 = 8,000 (pounds of line pull) The 8,000 pounds... for each connection size and style For a 6-3 /4 OD X 2-13/16 ID with NC50 connections, the table indicates a torque of 32,000 ft-lbs Type Conn O.D 2-1 /4 NC50 6-3 /4 36,000 35,500 32,000 D -44 2-1/2 2-13/16 3 30,000 3-1 /4 26,500 International Association of Drilling Contractors Chapter D: Drill Collars, Kellys, Subs, and Heavy Weight Drill Pipe It should be emphasized that the torque values shown in the... D1-13 or Figure D1- 14) International Association of Drilling Contractors D-31 IADC Drilling Manual - Eleventh Edition P Weight Available in Directional Holes The nomograph makes it possible to select any combination of drill collars and heavy weight drill pipe with any mud weight and any hole angle to make-up the required weight for the bit For example, enter the nomograph (Figure D1- 14) at point A on... of line pull) The 8,000 pounds of line pull is the total pull required on the end of your 48 " tong This may or may not be the amount of line pull reading on your Torque Indicator, as this depends on the location of the indicator in your hookup International Association of Drilling Contractors D -45 IADC Drilling Manual - Eleventh Edition Following are 15 examples of hook-ups used to make-up drill collar . outside diameter. D- 14 International Association of Drilling Contractors IADC Drilling Manual - Eleventh Edition Figure D1-3 Bending Strength Ratios of 1-1/2" and 1-3 /4& quot; Drill Collars D-15 International. Association of Drilling Contractors IADC Drilling Manual - Eleventh Edition Figure D1-5 Bending Strength Ratios of 2-1/2" Drill Collars D-17 International Association of Drilling Contractors Chapter. Collars D-18 International Association of Drilling Contractors IADC Drilling Manual - Eleventh Edition Figure D1-7 Bending Strength Ratios of 3" Drill Collars D-19 International Association of Drilling Contractors Chapter