| 摘要 |
Apparatus for clearing particles from a lateral drilling operation in strata beside a well. The drilling apparatus is part of a down hole unit and is configured for extending from a lateral opening of the unit into a lateral passage in the adjacent strata, and the operation of the drilling apparatus discharges particles from the lateral passage toward the lateral opening. The invention deflects or redirects the particles discharged from the lateral passage, away from the lateral opening, to prevent clogging or blocking of an internal passage or elbow through the down hole unit, using a pressurized fluid such as a gas or an emulsion. The pressurized fluid can also be configured for carrying the particles upwardly through the well to the surface, and for reducing or removing a hydrostatic head in the well.
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