GB539951A - Improvements in or relating to safety releasing drill strings, safety releasing joints for use in drill strings, and method of forming a tool string for deep well drilling - Google Patents
Improvements in or relating to safety releasing drill strings, safety releasing joints for use in drill strings, and method of forming a tool string for deep well drillingInfo
- Publication number
- GB539951A GB539951A GB584140A GB584140A GB539951A GB 539951 A GB539951 A GB 539951A GB 584140 A GB584140 A GB 584140A GB 584140 A GB584140 A GB 584140A GB 539951 A GB539951 A GB 539951A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drill strings
- joints
- safety releasing
- relating
- forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005553 drilling Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 230000002028 premature Effects 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/06—Releasing-joints, e.g. safety joints
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
539,951. Rod and tube joints. STEVENS, A. H. (Byron Jackson Co.). April 1, 1940, No. 5841. [Class 99 (i)] A drill string for deep wells having screw-threaded joints includes a premature-release joint in which the threads 9 are of greater pitch than in the normal joints at 11, 19 and in which abutting shoulders 13, 17 have one or more hardened antifriction washers clamped between them. The shoulders 13, 17 have less area than the shoulders 12 of the normal joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB584140A GB539951A (en) | 1940-04-01 | 1940-04-01 | Improvements in or relating to safety releasing drill strings, safety releasing joints for use in drill strings, and method of forming a tool string for deep well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB584140A GB539951A (en) | 1940-04-01 | 1940-04-01 | Improvements in or relating to safety releasing drill strings, safety releasing joints for use in drill strings, and method of forming a tool string for deep well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB539951A true GB539951A (en) | 1941-09-30 |
Family
ID=9803626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB584140A Expired GB539951A (en) | 1940-04-01 | 1940-04-01 | Improvements in or relating to safety releasing drill strings, safety releasing joints for use in drill strings, and method of forming a tool string for deep well drilling |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB539951A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2183765A (en) * | 1985-12-06 | 1987-06-10 | Vetco Offshore Ind Inc | Easy break-out tool joint and method |
-
1940
- 1940-04-01 GB GB584140A patent/GB539951A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2183765A (en) * | 1985-12-06 | 1987-06-10 | Vetco Offshore Ind Inc | Easy break-out tool joint and method |
| GB2183765B (en) * | 1985-12-06 | 1989-12-06 | Vetco Offshore Ind Inc | Easy break-out tool joint and method |
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