L-80 AND N-80 CASING PIPE - MINIMUM COLLAPSE RESISTANCE OF CASING – UNDER AXIAL LOAD - abter steel pipe manufacturer, natural gas casing and tubing,seamless steel pipe,OCTG,

API 5CT Casing Pipe in Grade J55/K55, N80

API 5CT Casing pipe ,American Petroleum Institute API Specification 5CT/ ISO 11960:2001

September 14, 2017

EN 10208-2 Hot Rolled Seamless steel pipes

September 28, 2017

L-80 AND N-80 CASING PIPE – MINIMUM COLLAPSE RESISTANCE OF CASING – UNDER AXIAL LOAD

Oilfield API N80 L80Casing

Specialties:
- Threading
- Heat treating
- Drift testing (Full-length, or just ends)
- Hydrostatic Testing
- Full third-party inspection capabilities (EMI, SEA, and Weld Line)
- Coating to customer specifications
- Marker joints/Cut-to-length:

Casing Design Example

Design a 9 5/8-in., 8,000-ft combination casing string for a well where the mud wt. will be 12.5 ppg and the formation pore pressure is expected to be 6,000 psi.

Only the grades and weights shown are available (N-80, all weights). Use API design factors.

Design for “worst possible conditions.”

- Available Sizes: 4 1/2″, 5 1/2″, 7″, 8 5/8″, 9 5/8″, 10 3/4″, 13 3/8″ OD.
- API Grades: J55, K55, N80, HCL80, HCP110, HCK55
- End Finishing: Plain end, ST&C, LT&C, BT&C, Semi-Premium / Drill-With-Casing Connections; Premium / Gas-Tight Connections; Flush Joint

1) WT/FT I) T IN I,B/FT 4.5 11.6 18	AKKA SQ. IN. 3.338	-1 ()0()() 6570	-5000 G470	o 6350	r»ooo 6230	lOOOO 6080	15()()() roi, 5920	丨 AI, 20000 I.APSF 5730	STRKS 25000 ：PRES 5530	— Pi 80000 SURK 5310	^1 .•^5000 -rsi 5050	40000 4770	45000 4460	r>ooo< 4100
13.5 15.52	3.836	8890	8720	8540	8330	8100	7850	7570	7260	6930	6560	6150	5710	5100
5 15 16.89	4.374	7520	7400	7250	7090	6910	6710	6490	6240	5970	5670	5340	4970	4560
18 13.81	5.275	10970	10750	10500	10220	9910	9580	9150	8670	8150	7590	7000	6360	5680
21.4 11.44	6.264	13490	13140	12760	12350	11890	11400	10870	10290	9680	9020	8310	7560	6740
23.2 10.46	6.791	14620	14250	13830	13380	12890	12350	11780	11160	10490	9780	9010	8190	7310
24.1 10	7.069	15220	14830	14400	13930	13420	12860	12260	11610	10920	10180	9380	8530	7610
5.5 17 18.09	4.962	6500	6400	6290	6160	6020	5860	5680	5480	5260	5010	4730	4420	4070
20 15.24	5.828	9200	9020	8830	8610	8370	8100	7810	7490	7140	6760	6340	5810	5180
23 13.25	6.63	11770	11500	11160	10800	10400	9970	9500	9000	8470	7890	7270	6610	5900
6.625 24 18.82	6.937	5940	5860	5760	5650	5530	5390	5230	5060	4860	4640	4400	4120	3800
28 15.89	8.133	8500	8340	8170	7970	7760	7520	7260	6970	6650	G300	5920	5500	4990
32 13.95	9.177	10780	10560	10320	10050	9750	9420	9060	8590	8070	7520	6940	6300	5630
7 23 22.08	6.656	3890	3870	3830	3790	3740	3690	3620	3530	3430	3320	3180	3010	2820
26 19.34	7.549	5570	5490	5410	5310	5200	5080	4940	4780	4600	4400	4170	3920	3620
29 17.16	8.449	7280	7160	7020	6870	6700	6510	6300	6060	5800	5510	5200	4840	4440
32 15.45	9.317	8960	8800	8610	8400	8170	7910	7630	7320	6980	6610	6200	5730	5120
35 14.06	10.172	10630	10420	10180	9910	9620	9300	8950	8520	8020	7470	6890	6260	5580
38 12.96	10.959	12040	11730	11390	11020	10610	10170	9700	9190	8640	8050	7420	6750	6020
7.625 26.4 23.25	7.519	3500	3450	3400	3340	3270	3190	3150	3090	3020	2930	2820	2690	2540
29.7 20.33	8.541	4910	4850	4790	4720	4630	4530	4420	4290	4140	3980	3780	3560	3310
33.7 17.73	9.72	6790	6680	6560	6430	6270	6100	5910	5700	5460	5200	4900	4580	4210
39 15.25	11.192	9X80	9010	8820	8600	8360	8090	7800	7480	7130	6750	6330	5800	5180
42.8 13.57	12.47	11300	11070	10810	10520	10180	9750	9300	8810	8280	7720	7110	6470	5770
45.3 12.82	13.141	12160	11850	11510	11130	10720	10280	9800	9280	8730	8130	7500	6820	6080
47.1 12.2	13.745	12720	12400	12040	11650	11220	10750	10250	9710	9130	8510	7840	7X30	6360
8.625 36 21.56	10.336	4180	4140	4100	4050	3990	3920	3840	3740	3630	3500	3350	3170	2960
40 19.17	11.557	5690	5610	5520	5420	5310	5180	5030	4870	4690	4480	4250	3980	3680
44 17.25	12.763	7200	7080	6950	6800	6630	6440	6230	6000	5750	5460	5150	4800	4410
49 15.48	14.118	8930	8760	8580	8370	8140	7880	7600	7290	6960	6590	6180	5720	5110
9.625 40 24.37	11.454	3170	3130	3090	3030	2980	2910	2840	2750	2660	2600	2520	2420	2290
43.5 22.13	12.559	3870	3840	3810	3770	3720	3660	3590	3510	3410	3300	3160	3000	2810
47 20.39	13-572	4870	4820	4760	4680	4600	4500	4390	4260	4120	3950	3760	3640	3290
53.5 17.66	15.547	6850	6740	6620	6480	6320	6150	5960	5740	5500	5240	4940	4610	4240
10.75 51 23.89	14.561	3310	3260	3220	3160	3100	3030	2950	2860	2810	2730	2640	2530	2390
55.5 21.72	15.947	4090	4060	4020	3970	3920	3850	3770	3680	3570	3440	3290	3120	2920
11.75 60 24.03	17-3	3260	3220	3180	3120	3060	2990	2920	2830	2760	2690	2610	2500	2360
13.375 68 27.86	19.445	2290	2280	2260	2240	2220	2180	2140	2100	2040	1970	1900	1810	1710
72 26.02	20.768	2730	2700	2670	2630	2590	2540	2490	2420	2350	2260	2160	2050	1970