FIELD: oil and gas industry. SUBSTANCE: device has pressure pulse sensor with body which incorporates disks fastened on shaft of device. Upper end of shaft is provided with unit for coupling with driving tube of drill rig, and lower end is adapted for connection with drill string. Additional disks are secured on inner surface of body alternately, with disks fastened on shaft. EFFECT: high efficiency. 2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| WELL-BOTTOM PRESSURE PULSE GENERATOR | 1993 |
|
RU2072039C1 |
| TOOL FOR WELL DRILLING | 1995 |
|
RU2100559C1 |
| DEVICE FOR DRILLING | 1993 |
|
RU2046174C1 |
| DEVICE FOR DRILLING BOREHOLES IN SEA BOTTOM | 1993 |
|
RU2071541C1 |
| DIAMOND TURBODRILL | 1995 |
|
RU2100560C1 |
| CASING VIBRATION SHOE | 1995 |
|
RU2100564C1 |
| LAYOUT OF DRILL STRING BOTTOM PART | 1994 |
|
RU2084610C1 |
| ROTARY SHOE OF A CASING STRING | 1994 |
|
RU2077657C1 |
| DRILL BIT | 1993 |
|
RU2077653C1 |
| TURBODRILL | 1994 |
|
RU2072023C1 |
