GRADES J-55 AND K-55 CASING - MINIMUM COLLAPSE RESISTANCE OF

TPCO

J-55 AND K-55 CASING

The Halliburton Cementing Tables list the collapse resistance of 5 >4 -in, 14.00 Ib/ft J-55 casing at 3,120 psi.

The axial tension in this case would derate the collapse strength to about 2,550 psi.

We shall be using API Tables to correct for the effect of axial tension on collapse strength of casing.

n \VT FT U/T IN LB/FT 4J>9.5 21.95	AREA SQ.丨N. 2.766	lOOOO 3440	-5000 3390	0 3310	r»(H)〇 3230	lOOOO 3120	15000 COL 3000	XIA L 20000 [.AI\SF 2850	STRP：? 25000 ：PRKS 2680	：<0(>〇0 SU RK- 2470	：ir>ooo -PSI 2220	40000 1930	45000 1420	50<
10.5 20.09	3.009	4200	4110	4010	3880	3740	3570	3380	3150	2890	2570	2150	1540	一
11.6 18	3.338	5220	5100	4960	4790	4590	43G0	4100	3800	3450	2980	2380	1710	—
5 11.5 22.73	3.304	3170	3120	3060	2980	2890	2790	2660	2500	2320	2090	1820	1370
13 19.76	3.773	4340	4250	4140	4010	3860	3690	3480	3240	2970	2640	2180	1570	一
15 16.89	4.374	5880	5730	5560	5360	5120	4860	4550	4210	3730	3160	2530	1820	一
5.5 14 22.54	4.029	3230	3180	3120	3040	2950	2840	2700	2550	2350	2130	1850	1380	—
15.5 20	4.514	4230	4150	4040	3920	3770	3600	3410	3180	2910	2590	2160	1550	__
17 18.09	4.962	5180	5060	4910	4740	4550	4320	4060	3770	3430	2970	2370	1700	一
6.625 20 23	5.734	3070	3030	2970	2900	2820	2720	2590	2450	2270	2050	1790	1360	—
24 18.82	6.937	4790	4690	4560	4410	4230	4030	3800	3530	3220	2850	2290	1640	一
7 20 25.74	5.749	2370	2320	2270	2210	2140	2090	2020	1930	1810	1670	1480	1220
23 22.08	6.656	3400	3340	3270	3180	3080	2960	2820	2650	2450	2200	1910	1410	—
26 19.34	7.549	4540	4440	4320	4190	4020	3840	3620	3370	3080	2730	2230	1600	—
7.625 26.4 23.25	7.519	2990	2950	2890	2830	2750	2650	2530	2390	2220	2010	1760	1340	—
8.625 24 32.67	6.934	1400	1390	1370	1350	1320	1290	1250	1200	1140	1070	980	870	_
32 24.5	9.149	2600	2570	2530	2490	2430	2350	2260	2150	2010	1830	1610i	1280	一
36 21.56	10.336	3590	3530	3450	3360	3240	3110	2960	2770	2550	2290	1980	1440	—
9.625 36 27.34	10.254	2100	2070	2020	1970	1920	1850	1770	1670	1590	1480	1330	1150	一
40 24.37	11.454	2640	2610	2570	2520	2460	2380	2290	2X70	2030	1850	1630	1280	—
10-75 40.5 30.71	11.435	1630	1610	1580	1550	1520	1470	1420	1360	1280	1190	1090	960	—
45.5 26.88	13.006	2170	2140	2090	2040	1980	1900	1820	1740	1650	1530	1370	1180	—
51 23.89	14.561	2780	2750	2700	2650	2580	2500	2390	2260	2110	1920	1680	1310	一
11.75 47 31.33	13.401	1550	1540	1510	1490	1450	1410	1360	1310	1230	1150	1050	930	—
54 27.01	15.463	2150	2120	2070	2020	1960	1890	1810	1720	1630	1520	1360	1170	一
60 24.03	17.3	2740	2710	2660	2610	2540	2460	2360	2240	2080	1900	1660	1300	—
13.375 54.5 35^2	15.514	1140	1140	1130	1120	1110	1090	1060	1030	980	930	860	770	_
61 31.1	17.487	1580	1560	1540	1510	1480	1440	1380	1320	1250	1160	1060	940	一
68 27.86	19.445	2020	1990	1950	1900	1850	17S0	1710	1620	1520	1420	1290	1120	—
16 75 36.53	21.414	1020	1020	1020	1010	1010	990	970	950	910	860	800	720	一
84 32.32	24-112	1440	1420	1410	1390	1360	1320	1280	1230	1160	1090	1000	890	—
18.625 87.5 42.82	24.858	630	630	630	630	630	630	G30	630	620	600	580	530	—
20 94 45.66	26.918	520	520	520	520	520	520	520	520	520	510	490	470	—
106.5 40	30.631	770	770	770	770	770	770	770	760	740	710	670	610	—
133 31.5	38.632	1530	1520	1500	1470	1440	1400	1350	1290	1220	1140	1040	920	—

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.”

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GRADES J-55 AND K-55 CASING - MINIMUM COLLAPSE RESISTANCE OF

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