A Landing String is a heavy duty thick wall drill pipe, usually 0.500" wall or greater. It is used in many instances where regular drill pipe does not have sufficient tensile strength. A landing string can be used not only for drilling, but also to land heavy casing strings in the well or heavy equipment on the sea bed. A slip crushing resistant landing string is designed to resist to a phenomenon called slip crushing when gripped by the slips on the rotary table. Manufactured from the same grade of steel, the tensile rating directly correlates to the wall thickness.
Landing String sizes include 5", 5-1/2", 5-7/8, 6-5/8", & 6-5/8" Slip Proof. Grades S-135, Z-140, & V-150.
Our landing Strings offer a variety of drill pipe-based designs for non-slip crushing resistant landing strings: typically those landing strings exhibit large OD (up to 6-5/8"), proprietary high strength steel grades, and heavy wall sections (up to 0.938" wall).
Special Features:
• Higher running speed.
• Higher tensile and hoisting capacity.
• Increased elevator loading capacity.
• Better slip crushing resistance.
OD |
Connection |
Grade |
Range |
Wall |
Nominal Weight |
TJ OD |
TJ ID |
Tube ID |
TJ Yield |
Min MUT |
Max MUT |
Prem Tube Tensile |
(in) |
(in) |
(lb/ft) |
(in) |
(in) |
(ft-lbs) |
(ft-lbs) |
(ft-lbs) |
(lbs) |
||||
5 |
NC50 |
S-135 |
II |
0.5 |
25.6 |
6-5/8 |
2-3/4 |
4 |
63,400 |
31,700 |
38,000 |
746,442 |
5 |
NC50 |
V-150 |
II |
0.5 |
25.6 |
6-5/8 |
2-3/4 |
4 |
63,400 |
31,700 |
38,000 |
829,380 |
5-1/2 |
HT55 |
S-135 |
II |
0.75 |
38.05 |
7-1/8 |
3-1/4 |
4 |
107,100 |
53,500 |
64,200 |
1,170,556 |
5-1/2 |
5-1/2" FH |
S-135 |
II |
0.75 |
38.05 |
7-1/8 |
3-1/4 |
4 |
70,700 |
35,400 |
42,400 |
1,170,556 |
5-1/2 |
5-1/2" FH |
S-135 |
II |
0.75 |
38.05 |
7-1/4 |
3-1/4 |
4 |
78,700 |
39,400 |
47,200 |
1,170,556 |
6-5/8 |
6-5/8" FH |
S-135 |
II |
0.625 |
40.05 |
8-1/2 |
4-1/4 |
5.375 |
108,353 |
54,200 |
65,000 |
1,245,837 |
6-5/8 |
6-5/8" FH |
S-135 |
III |
0.625 |
40.05 |
8-1/2 |
4-1/4 |
5.375 |
108,353 |
54,200 |
65,000 |
1,245,837 |
6-5/8 |
6-5/8" FH |
V-150 |
III |
0.625 |
40.05 |
8-1/2 |
4-1/4 |
5.375 |
108,353 |
54,200 |
65,000 |
1,384,263 |
6-5/8 |
6-5/8" FH |
S-135 |
II |
0.750 |
47.06 |
8-1/2 |
4-1/4 |
5.125 |
108,353 |
54,200 |
65,000 |
1,456,834 |
6-5/8 |
6-5/8" FH |
S-135 |
II |
0.813 |
50.46 |
8-1/2 |
3-1/2 |
4.999 |
130,200 |
65,100 |
71,000 |
1,558,354 |
6-5/8 |
6-5/8" FH |
V-150 |
II |
0.813 |
50.46 |
8-1/2 |
3-1/2 |
4.999 |
130,200 |
65,100 |
71,000 |
1,731,504 |
6-5/8 |
DS65 |
V-150 |
II |
0.813 |
50.46 |
8-1/2 |
4 |
4.999 |
146,000 |
82,600 |
87,600 |
1,731,504 |
6-5/8 |
6-5/8" FH |
V-150 |
III |
0.938 |
56.95 |
8-11/16 |
3-1/2 |
4.749 |
138,500 |
69,500 |
78,000 |
1,944,683 |
6-5/8 |
6-5/8" FH |
V-150 |
II |
0.938-1.703 |
56.95 |
8-11/16 |
3-1/2 |
4.749 |
138,500 |
69,500 |
78,000 |
1,944,683 |
6-5/8 |
6-5/8" FH |
V-150 |
III |
1.093-1.719 |
64.58 |
8-11/16 |
3-1/2 |
4.44 |
155,741 |
69,500 |
78,000 |
2,189,804 |