FIELD: oil and gas industry.
SUBSTANCE: invention is related to survey of wells having large horizontal wellbores and it can be applied for delivery of tools. The device contains a logging cable with a propulsor made of a set of weights and the tool fixed at the end of the logging cable. The logging cable has a diameter as low as practicable in conditions of its breaking strength. Weights of the propulsor are made as balls, ellipsoids or short cylinders with spherical butt-ends having axial openings provided that weight move freely in regard to the logging cable axis. Weights of the propulsor are made with a diameter as big as practicable in conditions of their free movement in the well.
EFFECT: technical result lies in increase of transportation length (depth) for survey tools to horizontal wellbores up to 1000 m and more, reduction of friction against pipe walls, improvement in reliability and accident-free operation of the device.
4 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR DELIVERY OF INSTRUMENTS TO HIGH-PRESSURE OIL OR GAS WELLS | 2001 |
|
RU2185510C1 |
| BLOWOUT PREVENTER | 2000 |
|
RU2188318C2 |
| METHOD FOR DELIVERING DEVICES INTO WELL AND DEVICE FOR REALIZATION OF SAID METHOD | 2003 |
|
RU2244119C1 |
| SPRING FOR CENTERING OF INSTRUMENTS IN OIL AND GAS WELLS | 2000 |
|
RU2185509C1 |
| PROCESS OF COMPLETION OF NON-FLOWING WELL | 2001 |
|
RU2190085C1 |
| METHOD OF COMPLETING OIL WELL AND DEVICE FOR ITS EMBODIMENT | 2000 |
|
RU2183731C2 |
| JET PERFORATOR CARRIER | 2000 |
|
RU2185498C1 |
| METHOD OF OIL WELL COMPLETION | 2000 |
|
RU2178063C2 |
| METHOD OF OIL RECOVERY | 2000 |
|
RU2172390C1 |
| HEATER FOR LUBRICATOR | 2001 |
|
RU2190755C1 |
