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

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
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

Grade N80 L80 Steel Casing Tube, Oil Field Pipe

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 15.523.8368890872085408330810078507570726069306560615057105100
5 15 16.894.3747520740072507090691067106490624059705670534049704560
18 13.815.27510970107501050010220991095809150867081507590700063605680
21.4 11.446.264134901314012760123501189011400108701029096809020831075606740
23.2 10.466.7911462014250138301338012890123501178011160104909780901081907310
24.1 107.06915220148301440013930134201286012260116101092010180938085307610
5.5 17 18.094.9626500640062906160602058605680548052605010473044204070
20 15.245.8289200902088308610837081007810749071406760634058105180
23 13.256.63117701150011160108001040099709500900084707890727066105900
6.625 24 18.826.9375940586057605650553053905230506048604640440041203800
28 15.898.133850083408170797077607520726069706650G300592055004990
32 13.959.17710780105601032010050975094209060859080707520694063005630
7 23 22.086.6563890387038303790374036903620353034303320318030102820
26 19.347.5495570549054105310520050804940478046004400417039203620
29 17.168.4497280716070206870670065106300606058005510520048404440
32 15.459.3178960880086108400817079107630732069806610620057305120
35 14.0610.1721063010420101809910962093008950852080207470689062605580
38 12.9610.9591204011730113901102010610101709700919086408050742067506020
7.625 26.4 23.257.5193500345034003340327031903150309030202930282026902540
29.7 20.338.5414910485047904720463045304420429041403980378035603310
33.7 17.739.726790668065606430627061005910570054605200490045804210
39 15.2511.1929X80901088208600836080907800748071306750633058005180
42.8 13.5712.47113001107010810105201018097509300881082807720711064705770
45.3 12.8213.1411216011850115101113010720102809800928087308130750068206080
47.1 12.213.7451272012400120401165011220107501025097109130851078407X306360
8.625 36 21.5610.3364180414041004050399039203840374036303500335031702960
40 19.1711.5575690561055205420531051805030487046904480425039803680
44 17.2512.7637200708069506800663064406230600057505460515048004410
49 15.4814.1188930876085808370814078807600729069606590618057205110
9.625 40 24.3711.4543170313030903030298029102840275026602600252024202290
43.5 22.1312.5593870384038103770372036603590351034103300316030002810
47 20.3913-5724870482047604680460045004390426041203950376036403290
53.5 17.6615.5476850674066206480632061505960574055005240494046104240
10.75 51 23.8914.5613310326032203160310030302950286028102730264025302390
55.5 21.7215.9474090406040203970392038503770368035703440329031202920
11.75 60 24.0317-33260322031803120306029902920283027602690261025002360
13.375 68 27.8619.4452290228022602240222021802140210020401970190018101710
72 26.0220.7682730270026702630259025402490242023502260216020501970

 

Leave a Reply

Your email address will not be published. Required fields are marked *