FIELD: drilling equipment. SUBSTANCE: this whipstock is intended for drilling up second bore-hole. Wedge-type whipstock is in the form of hermetic telescopic container configured as plunger pair. Upper part of cylinder is made with chamfer to which trough is rigidly secured. Lower part of cylinder is provided with seat to which plunger is seated to create disk-type non-return valve. Container is filled with cement slurry. Plunger has drain holes. Upon creation of required load, cement slurry is pressed out from container and fills free space between wedge and casing string of well, thus fastening them to each other. Application of aforesaid embodiment of wedge-type whipstock provides for higher reliability of fastening whipstock in well. Its design is simplified and its functioning is dependable. EFFECT: higher efficiency. 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| TWO-POSITION NON-RETURN VALVE | 1994 |
|
RU2133900C1 |
| SAMPLER FOR TESTER OF POOLS | 1999 |
|
RU2170349C2 |
| PACKER | 1996 |
|
RU2105863C1 |
| BOTTOM-HOLE MOTOR ACTING AS WHIPSTOCK | 1997 |
|
RU2132444C1 |
| BOTTOM-HOLE MOTOR | 1996 |
|
RU2109905C1 |
| PACKER | 1996 |
|
RU2112862C1 |
| CORE CONTAINER GEAR | 1999 |
|
RU2160820C2 |
| METHOD FOR CONSTRUCTION OF WELLS | 1996 |
|
RU2109909C1 |
| METHOD FOR TENSIONING OF CASING STRINGS | 1998 |
|
RU2132923C1 |
| LIGHT GROUTING MORTAR | 1999 |
|
RU2151271C1 |
