API 7:2002 pdf download

API 7:2002 pdf download.Specification for Rotary Drill Stem Elements.
7.3 TYPE C (SWIVEL SUB) DIMENSIONS
7.3.1 Connections, Bevel Diameters, and Outside Diameters
The swivel sub shall have pin up and pin down (both left hand) rotary shouldered connections. The lower connection size, style, and bevel diameter (Dp) shall conform to the applicable sizes, styles, dimensions, and tolerances specified in Tables 2 and 3 for upper kelly box connections. The upper conection shall be the size and style of the swivel stem box connection, ie, 41/2. 65/8, 75/8 API REG. The sub’s outside diameter and tolerances shall conform to the larger of either the kelly upper box connection or the swivel stem box connection outside diameter.
7.3.2 Inside Diameter
The maximum inside diameter (d) shall be the langest diameter allowed for the upper kelly connection specified in Table 2 or 3. In the case of step bored subs in which the bore
through the upper pin is larger than the bore through the lower pin, the upper pin bore shall not be so large as to cause the upper pin to have lower tensile strength or torsional strength than the lower pin as calculated per the current edition of API Recommended Practice 7G.
7.3.3 Inside Bevel Diameter
The inside bevel diameter (dg) shall be 1/4, +t/16 inch (6.4, 土1.6 millimeter) larger than the bore.
7.3.4 Length
The minimum tong space allowable shall be 8 inches (203.2 millimeters).
7.4 TYPE D (LIFT SUB) DIMENSIONS
7.4.1
Pipe Diameter and Upper Lift Diameter
The pipe diameter (Dp) shall conform to applicable drll pipe size. Corresponding upper lift diameters (DL) for tapered shoulders are specifed in Table I 1.
7.4.2 Connections, Bevel Diameters, and Outside
Diameters
The connection sizes, styles, bevel diameters (Dp), and outside diameter (D) shall conform to the applicable sizes, styles, dimensions, and tolerances specified in Table 13.
7.4.3
Inside Diameter
The maximum inside diameter (d) shall be the largest diameter alwed for the lightest applicable pipe size listed in Table 7.
7.4.4 L.ngth
Lcngths and tolerances shaH be as shown in guie 13 (dimensions in inches).
7.5 MATERIAL MECHANICAL PROPERTIES
The mechanical pmperties of all subs shall conform to the maicrial requirements of drill collars as specified in Sectiofl S. The surface hardness of the as-manufactured diameter (Dft) of 1rpe B subs shall be measured per the current ediLion of ASTM A370 and shall conform to the requirements listed in Table 10.
7.8 CONNECTION STRESS RELIEF FEATURE
Stress relief features ale optional an Tpe A and B subs and mandatory on 4fz APi REG and larger Type C subs. Type D subs are nut affected. Connection stress relief feature dimensions and tolerance shall conform to the dimensions and tolerances listcd in Section 8, Drill Collars, and are applicable to connections on Type A. B. and C subs shown in Table 9.
7.7 COLD WORKING ON THREAD ROOTS
Cold working o(th,ead touts is optional. See Section 5 br details
7.8 MARKING
Subs manufactured in confermance to this specification shall he marked with the manufacturer’s name or identification niark, ‘Spec 7.” the inside diameter and the size and style of the connection at each end. The markings shall be die stamped on a iriarking recess located on the 1) diameter of the sub. The marking identifying the size and style of connection shall be placed on that end of the recess closer to the connection to wlmh it applies. The marking recess location is shown in Figure 12.