Description
Tubing coupling
Tubing coupling
Normally tubing coupling OD maximum is 4 1/2”, as the tubing pipe is applied for the drilling activities (Inside the tubing is the sucker rod to drill/pump the oil), couplings type is more various and rigorous than casing, mostly used is thicken type upset coupling (Internal upset and external upset), for short is EUE coupling, it is the most favorable in tubing connections. Tubing with EU end (EUE) coupling connection also called UPTBG. Because of the end of the tubing is thickened (upset), the connecting stress is better than buttress coupling.
Buttress coupling another type used for tubing connections, it has the same thickness of the pipe body, called NU end (NUE)tubing or TBG.
Features
The oil tubing coupling can solve the problem of fatigue fracture in the existing coupling due to stress concentration. Oil tubing end is connected to the inside wall of the coupling in a tapered thread. The coupling body end and oil tubing are connected with same thread pitch flat thread. The coupling is not easy to produce fatigue fracture, and has good connection effect. It can prevent the accident of oil well pipe string break effectively.
| The API couplings for tubing and casing pipes | ||||
|---|---|---|---|---|
| Size and Specifications For Tubing and Casing Couplings | ||||
| Descriptions and size | Type of Therad | O.D*L (mm) |
Weight (kg) |
|
| Tubing Coupling | 1.050 | NUE | 33.35*80.96 | 0.23 |
| 1.050 | EUE | 42.16*82.55 | 0.38 | |
| 1.315 | NUE | 42.16*82.55 | 0.38 | |
| 1.315 | EUE | 48.26*88.90 | 0.57 | |
| 1.660 | NUE | 52.17*88.90 | 0.59 | |
| 1.660 | EUE | 58.88*95.25 | 0.68 | |
| 1.900 | NUE | 55.88*95.25 | 0.56 | |
| 1.900 | EUE | 63.50*98.42 | 0.84 | |
| 2-3/8″ | NUE | 73.02*107.95 | 1.28 | |
| 2-3/8″ | EUE | 77.80*132.82 | 1.55 | |
| 2-7/8″ | NUE | 88.90*130.18 | 2.34 | |
| 2-7/8″ | EUE | 93.17*133.35 | 2.40 | |
| 3-1/2″ | NUE | 107.95*142.88 | 3.71 | |
| 3-1/2″ | EUE | 114.30*146.05 | 4.10 | |
| 4″ | NUE | 120.65*146.05 | 4.35 | |
| 4″ | EUE | 127.00*152.40 | 4.82 | |
| 4-1/2″ | NUE | 132.08*155.58 | 4.89 | |
| 4-1/2″ | EUE | 141.30*158.75 | 6.05 | |
| Casing Coupling | 4-1/2″ | STC | 127.00*158.75 | 5.23 |
| 4-1/2″ | LTC | 127.00*177.80 | 4.15 | |
| 4-1/2″ | BTC | 127.00*225.42 | 4.55 | |
| 5″ | STC | 141.30*165.10 | 4.66 | |
| 5″ | LTC | 141.30*196.85 | 5.75 | |
| 5″ | BTC | 141.30*231.78 | 5.85 | |
| 5-1/2″ | STC | 153.67*171.45 | 5.23 | |
| 5-1/2″ | LTC | 153.67*203.20 | 6.42 | |
| 5-1/2″ | BTC | 153.67*234.95 | 6.36 | |
| 6-5/8″ | STC | 187.71*184.15 | 9.12 | |
| 6-5/8″ | LTC | 187.71*222.25 | 11.34 | |
| 6-5/8″ | BTC | 187.71*244.48 | 11.01 | |
| 7″ | STC | 194.46*184.15 | 8.39 | |
| 7″ | LTC | 194.46*228.60 | 10.83 | |
| 7″ | BTC | 194.46*254.00 | 10.54 | |
| 7-5/8″ | STC | 215.90*190.50 | 12.30 | |
| 7-5/8″ | LTC | 215.90*234.95 | 15.63 | |
| 7-5/8″ | BTC | 215.90*263.52 | 15.82 | |
| 8-5/8″ | STC | 244.48*196.85 | 16.23 | |
| 8-5/8″ | LTC | 244.48*254.00 | 21.67 | |
| 8-5/8″ | BTC | 244.48*269.88 | 20.86 | |
| 9-5/8″ | STC | 269.88*196.85 | 18.03 | |
| 9-5/8″ | LTC | 269.88*266.70 | 25.45 | |
| 9-5/8″ | BTC | 269.88*269.88 | 23.16 | |
| 10-3/4″ | STC | 298.45*203.20 | 20.78 | |
| 10-3/4″ | BTC | 298.45*269.88 | 25.74 | |
| 11-3/4′ | STC | 323.85*203.20 | 22.64 | |
| 11-3/4′ | BTC | 323.85*269.88 | 28.03 | |
| 13-3/8″ | STC | 365.12*203.20 | 25.66 | |
| 13-3/8″ | BTC | 365.12*269.88 | 31.77 | |
| 16″ | STC | 431.80*228.6 | 34.91 | |
| 16″ | BTC | 431.80*269.88 | 40.28 | |
| 18-5/8″ | STC | 508.00*228.60 | 51.01 | |
| 18-5/8″ | BTC | 508.00*269.88 | 62.68 | |
| 20″ | STC | 533.40*228.6 | 43.42 | |
| 20″ | LTC | 533.4*292.10 | 57.04 | |
| 20″ | BTC | 533.40*269.88 | 50.10 | |
Our company has been in the oil & gas drilling equipment industry for over more years, We are here to serve all your drilling equipment needs.
Reviews
There are no reviews yet.