Positive displacement downhole and motor for rotary drilling rigs installation and maintenance [slaid]
18
| Формат: | |
|---|---|
| Хэвлэсэн: |
Austin, Tex. : Petroleum Extension Service, The University of Texas at Austin,
1977
|
| Нөхцлүүд: |
18
| Формат: | |
|---|---|
| Хэвлэсэн: |
Austin, Tex. : Petroleum Extension Service, The University of Texas at Austin,
1977
|
| Нөхцлүүд: |