{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
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    "mimeType": "image/png",
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  "description": "The present invention relates to a downhole driving unit (11) for insertion into a well, comprising a driving unit housing, a hydraulic motor (23) comprising a hydraulic motor housing (93), a wheel assembly (90) comprising a stationary part (91) and a rotational part (92), the stationary part being…",
  "path": "/patents/997542",
  "publishedAt": "2012-10-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K17/046",
    "WELLTEC AS [DK]"
  ],
  "textContent": "The present invention relates to a downhole driving unit (11) for insertion into a well, comprising a driving unit housing, a hydraulic motor (23) comprising a hydraulic motor housing (93), a wheel assembly (90) comprising a stationary part (91) and a rotational part (92), the stationary part being connected with the driving unit housing and being rotatably connected with a rotational part. The wheel assembly further comprises the hydraulic motor so that the stationary part and the rotational part constitute the hydraulic motor housing, the hydraulic motor (23) comprising a rotatable section (84) connected with the rotational part for rotating part of the wheel assembly. Furthermore, the wheel assembly comprises a planetary gearing system (95) comprised in the hydraulic motor housing and the hydraulic motor comprises a rotatable section connected with or forming part of a sun gear (96) of the planetary gearing system. The invention furthermore relates to a downhole system comprising the driving unit and to use of such driving unit.",
  "title": "Downhole driving unit having a hydraulic motor with a planetary gearing system"
}