api spec 5ct introduction

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Oil & Gas

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  • UNDERSTANDING OF API Spec 5CT PRODUCTS

  • OIL COUNTRY TUBULARS GOODS

  • CASING &

    TUBING

  • CASING

    Casing is a Pipe run from the surface and intended to line the wall of a

    drilled Wall.

    It is a permanent part of the well in which bottom sections of casing are

    cemented in place.

  • CASING

    Casing is manufactured from a Seamless Pipe.

    The casing is both end threaded and assembled with coupling at

    one end

  • CASING

    Casing will be SELECTED by (as a Minimum)

    A) Size (OD) B) Weight (PPF) or Wall Thickness C) Grade D) End Connection

  • CASING

    4

    SIZES

    8 5/8 5 9 5/8 5 5 6 5/8

    10 11

    13 3/8 7

    7 5/8

    16 18 5/8

    20

  • CASING GRADES

    H40 J55 K55 N80 R95 M65 L80 C90 T 95 C110 P110 Q125

  • CASING

    TYPE OF END CONNECTIONS

    1. PLAIN END (Beveled End)

    2. ROUND CASING A) Short Round B) Long Round

    3. BUTTRESS CASING

    4. EXTREME-LINE CASING

  • TUBING Relatively small-diameter pipe that is run into a well to serve as a conduit for the passage of oil and gas to the surface.

    The tubing may be isolated from casing by Production packer

    Tubing is removed from the hole and at times is replaced.

    Tubing is manufactured from a Seamless Pipe.

  • TUBING SELECTION OF TUBING

    TUBING WILL BE SELECTED BY

    1) Size 2) Weight 3) Grade 4) End preparation ( NUT or EUT)

  • TUBING SIZE (OD OF THE Tubing)

    1. 1.050 7. 2 3/8 2. 1.315 8. 2 7/8 3. 1.660 9. 3 4. 1.900 10. 4

    5. 2.063 11. 4

  • TUBING

    GRADE

    1. H40 5. C90 2. J55 6. T95 3. L80 7. P110 4. N80

  • TUBING

    END PREPARATION

    1. Non Upset End

    2. External Upset End

  • TUBING

    END CONNECTIONS 1. Non Upset Tubing

    1.050 to 3 1/2 10 TPI (Round Form) 4 & 4 8 TPI (Round Form)

    2. External upset Tubing 1.050 to 1.900 10 TPI (Round Form) 2 3/8 & 4 8 TPI (Round Form)

  • LINE PIPE

  • LINE PIPE

    Line pipe is used transfer the Hydrocarbons from one place to another.

    These are may be manufactured as seamless or seam welded pipes

  • Gauging, Inspection of Casing, Tubing, Line pipe

    threads

  • Casing & Tubing

    8 TPI TPF 10TPI TPF

  • Round Thread Thread Inspection

    Taper : Taper is measured over the last perfect thread to end of pipe length for round thread casing.

    The taper is designated in API spec 5B as -in taper per ft of thread length. However, for inspection purposes this taper, including the appropriate tolerance, is rounded to the equivalent of 0.060 to 0.068 in. per in. The use of a -in. gauge length results in dividing tolerances by two or 0.030 to 0.034in. per

  • Round Thread Thread Inspection

    Lead : Lead is usually measured at 1-inch. Intervals Cumulative lead is measured over the L4-g crested threads from the end of the pipe. Only perfect (full-crested) threads shall be included in the cumulative lead measurement. The thread should be provided with a longitudinal line divided into 1-in. (1/2).

  • Round Thread Thread Inspection Thread Height : Thread height (depth) is the measurement of the distance from the thread root to the thread crest normal to the thread axis. Place the tip of the thread height gauge in the thread groove and anvil of the gauge resting on top of full-crested threads. The anvil shall be held in firm contact with the thread crests. The gauge shall be aligned with the axis of threads by rocking the gauge about the longitudinal axis of the anvil. The thread height is indicated correctly when the dial indicator stops moving near the center of the rocking motion, the null point.

  • Round Thread Thread Inspection

    Stand-off : Standoff is the distance measured axially between the end of the pipe or coupling and the stand off position of the ring or plug gauge

    Long Pin Threads

    The distance the long pin extends beyond the short ring gauge is determined from Formula Distance = L1 (long) - L1(short) P1 Where L1 (Long) = is the length from the end of long pin to hand-tight place. L1 (short) = is the length from the end of the short pin to hand-tight place. P1 = is the standoff between the short working ring gauge and the certified master plug gauge Values of L1(long) L1 (short) have been determined The distance the long pin extends beyond the short ring gauge may not exceed the distanceFormula 1 thread.

  • Round Thread Basic Hand tight Makeup

  • Round Thread External threads

    Total Thread Length: Total thread length, the L4 dimension is measured parallel to the thread axis from the end of the pipe to vanish point of the thread tool-mark. The measurement is made using a metal scale or caliper. Min Full Crest Thread Length: The length measured parallel to the thread axis from the end of the pipe to the first non-full-crested thread. In this length there should not be any Black Crested Threads.

    Round Thread Internal threads

    Dia of Coupling Recess Depth of coupling recess Coupling Length

  • 1.ThreadProfile: Buttrress Casing

  • BUTTRESS Thread Thread Inspection

    Taper : Taper is defined as the change in diameter along the minor cone of the external threads and the major cone of the internal threads. Unlike other threads, two areas of the buttress threads must be inspected: the perfect threads and the imperfect threads. The taper of the perfect threads is inspected at 1-in. intervals, overlapping as necessary to inspect the entire length. A similar procedure is applied to the imperfect thread up to the run-out. Only perfect thread tapers and tolerances are determined.

  • BUTTRESS Thread Thread Inspection

    Lead : The gauge should register zero when applied to the setting standard. The adjustment to establish the zero reading is the same as outlined. Pressure shall be applied against the gauge so the thread contact points are in contact with the load flank (3 flank) and thread root simultaneously. Lead is inspected over the perfect thread length. Cumulative lead is the lead measured starting with the first perfect thread over an interval which the largest multiple of 1 inch.

  • Buttress Thread Thread Inspection Thread Height : Verification of buttress thread depth shall be performed at the first perfect thread (full crested threads on either side of the root) and at 1-in. intervals along the pin until the first black-crested thread is encountered with the L7 length.

    The coupling thread height inspection commences at J + 1 thread from the center of the coupling and progresses at 1-in. intervals to the first perfect thread

  • Butteress Thread Thread Inspection Run-out : Thread run-out is the measurement of the abruptness with which the buttress thread is terminated at the triangle end of the thread. The run-out gauge is a three- point gauge having two fixed points and one movable point attached to a balanced-dial indicator. The run-out gauge indicator shall be set to zero using a flat surface as a setting standard. If the thread terminates before the apex of the triangle, the movable pointer is placed in the last thread groove 90 degree prior to the thread termination and the gauge transverse clockwise until the pointer exists the thread groove and rides on the pipe surface. The run-out is satisfactory if the dial indicator does not exceed +0.005in. during the traverse of the thread groove.

  • Buttress Thread Basic Hand tight Makeup

    PLANE OF CENTER OF COUPLING

    PLANE OF END OF PIPE (POWER TIGHT)

    PLANE OF END OF PIPE (HAND TIGHT)

    PLANE OF VANISH POINT

    PLANE OFPERFECT THREAD LENGTH

    PLANE OF FIRST CONTACT WITH TRAINGLE STAMP

  • Buttress Thread External threads

    Total Thread Length: Total thread length, the L4 dimension is measured parallel to the thread axis from the end of the pipe to vanish point of the thread tool-mark. The measurement is made using a metal scale or caliper. Min Full Crest Thread Length: The length measured parallel to the thread axis from the end of the pipe to the first non-full-crested thread. In this length there should not be any Black Crested Threads.

    Buttress Thread Internal threads

    Coupling Length

  • LINE PIPE Thread External threads

  • LINE PIPE Thread External threads

    Line Pipe Pitch:

    1/8 27 TPI & 3/8 18TPI 1/2 3/4 14 TPI 1 2 11 TPI 2 20 8 TPI

  • LINE PIPE Thread External threads

    All thread and linear measurements are same as round threads

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