FIELD: mining industry. SUBSTANCE: it is used in drilling bore-holes by bottom-hole motor with core-taking. Motor has body with unit for connection to drill string. Rigidly connected to each other and with body are core barrel hanger and hollow torsion bar installed for possible interaction with stator which is connected with body through bearing unit. Also provided are hollow rotor and drilling tool which is rigidly connected with stator by means of hollow spindle. Motor body is hollow, and rotor is installed inside body space with creation of annular clearance in which stator is located. EFFECT: high efficiency. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| CORE EXTRACTING ENGINE | 1992 |
|
RU2046177C1 |
| SPIRAL BOTTOM-HOLE MOTOR FOR DIRECTIONAL DRILLING | 1993 |
|
RU2081986C1 |
| SCREW DOWNHOLE MOTOR | 1992 |
|
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| LATERAL CORE SAMPLER | 0 |
|
SU1661394A1 |
| SCREW FACE MOTOR | 1989 |
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RU2011778C1 |
| METHOD FOR DETERMINATION OF WEAR OF DRILL BIT BEARING AND CUTTING STRUCTURE DURING WELL DRILLING BY SCREW DOWNHOLE MOTOR | 1991 |
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| REDUCTION-UNIT TURBO-DRILL | 1996 |
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| WHIPSTOCK WITH REGULATED ANGLE OF CURVATURE FOR DIRECTED DRILLING OF HOLES | 1995 |
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| DEVICE FOR HOLE DRIFT ANGLE MEASUREMENT | 1990 |
|
RU2013535C1 |
| DRILLING AND CORING DEVICE | 0 |
|
SU1776288A3 |
