FIELD: bore-hole drilling machinery and equipment. SUBSTANCE: this can be used in drilling technology for saving of metal casing pipes and also in freeing land areas for agricultural and construction purposes. According to method, casing pipes are preliminarily drilled around and then are pulled out by means of rope-and-pulley system of drilling rig. Drilling-around is performed by drilling new bore-hole next to casing string, thus breaking ground around casing string by at least 1/4 of length of its circumference. New bore-hole is drilled down through entire length of casing string. Pulling of casing string is effected at angle to well axis. EFFECT: higher efficiency. 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DYNAMIC HAMMER | 1994 |
|
RU2069255C1 |
| METHOD FOR DETERMINING SALINIZATION OF SOILS AND/OR LEVEL AND MINERALIZATION OF GROUND WATER | 1992 |
|
RU2048749C1 |
| VARIABLE-SPEED DRIVE | 1993 |
|
RU2108505C1 |
| METHOD AND DEVICE FOR DESTRUCTION OF CEMENT STONE BEHIND CASING PIPE | 2023 |
|
RU2817925C1 |
| SYSTEMS AND METHODS WITH THE LOCKING CASING APPLICATION IN THE PROCESS OF DRILLING | 2014 |
|
RU2660156C1 |
| METHOD OF TREATMENT OF DRAINAGE EFFLUENT AND DEVICE FOR ITS EMBODIMENT | 1994 |
|
RU2091538C1 |
| METHOD AND DEVICE FOR IMPLEMENTATION OF PROCESSES IN UNDERGROUND BOREHOLE BY MEANS OF USAGE OF FLEXIBLE WELL CASING | 2006 |
|
RU2378479C2 |
| APPARATUS FOR INVESTIGATING WELL-DRILLING PROCESSES | 0 |
|
SU1629467A1 |
| METHOD FOR WELL CONSTRUCTION | 1989 |
|
RU2021477C1 |
| METHOD OF CONSTRUCTING A COMBINATION DRAIN | 0 |
|
SU1537747A1 |
