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| technical string (ABelonogov); surface pipe (the first string of casing set in a well after the conductor pipe, varying in length from a few hundred feet to several thousand. Some states require a minimum length to protect fresh-water sands. Compare conductor pipe. Bab GofPI Alexander Demidov); intermediate casing (A casing string that is generally set in place after the surface casing and before the production casing. The intermediate casing string provides protection against caving of weak or abnormally pressured formations and enables the use of drilling fluids of different density necessary for the control of lower formations. SLB G Alexander Demidov) | |||
| protective casing (string) | |||
| optional intermediate casing (MichaelBurov); service casing (MichaelBurov) | |||
| protecting string; protection string; protective string; protector string; intermediate casing string (MichaelBurov); salt string (MichaelBurov); service string (MichaelBurov) | |||
| surface casing; surface casing (Group Detailed Design) | |||
| техническая колонна: 18 phrases, 7 sujets |
| Champs de pétrole | 1 |
| Forage | 1 |
| Général | 4 |
| Pétrole / pétrole | 4 |
| Pétrole et gaz | 5 |
| Production | 1 |
| Technologie | 2 |