FIELD: well drilling. SUBSTANCE: device is provided with hollow sleeve with lengthwise slots and radial channels open to radial channels of the rod the sleeve is installed in. A seat is made on upper sleeve end. The sleeve is installed so as to be moved in axial direction and interact to a cylinder that overlaps one channel. EFFECT: improved fluid inflow in well. 2 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR CLEANING OF FORMATION BOTTOM HOLE ZONE | 1990 |
|
RU2015445C1 |
| DEVICE FOR INDUCING INFLOW OF FORMATION FLUID | 1991 |
|
RU2015317C1 |
| DOWNHOLE ISOLATION DEVICE | 0 |
|
SU1756535A1 |
| GEAR BOX INSERT OF BOTTOM HOLE DRILLING ENGINE | 1992 |
|
RU2039184C1 |
| WELL PIPE CUTTER | 2003 |
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RU2255201C1 |
| DEVICE FOR BOREHOLE TESTING | 1992 |
|
RU2072042C1 |
| CORE BARREL | 0 |
|
SU1654527A1 |
| HYDRAULIC PACKER | 0 |
|
SU1756536A1 |
| WELL ANNULAR CLEARANCE SEAL DEVICE | 0 |
|
SU1789659A1 |
| ARRANGEMENT FOR FLUID-TIGHTNESS TESTING OF CASING IN WELL | 0 |
|
SU1530738A1 |
