| (11) | Number of the document | 1280 |
| (21) | Number of the application | 96-0219 |
| (22) | Filing date of the application | 1993.06.08 |
| | Date of filing the request for examination | (de fond) 02.04.1997 |
| (71) | Name(s) of applicant(s), code of the country | SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V., NL; |
| (72) | Name(s) of inventor(s), code of the country | LOHBECK Wilhelmus Christianus Maria, NL; |
| (73) | Name(s) of owner(s), code of the country | SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V., NL; |
| (54) | Title of the invention | Process for completion of the borehole shaft uncased part |
| (13) | Kind-of-document code | |
| (51) | International Patent Classification | E21B 43/08 (2006.01); E21B 43/10 (2006.01); |
| (19) | Country | NL |
| (41) | Date of publication of the application | 1997.05.31 |
| (45) | Date of publication of patent granting decision: | 1999.07.31 |
| (47) | Date of issuance of patent | 2000.03.31 |
| (30) | Priority | 92201669.6, 1992.06.09, EP |
| (74) | Patent attorney | GLAZUNOV Nicolae, Str. Trandafirilor nr. 31, bloc 1, ap. 111, MD-2038, Chişinău, Republica Moldova |
| | Substantive examiner(s) | COZMA Valeriu |
| (85) | Date of introducing the national procedure | 1996.08.06 |
| (86) | International application | PCT/EP1993/001460, 1993.06.08 |
| (87) | International publication | WO 1993/25800, 1993.12.23 |
| | Expired patents; Date of expiration | 2014.01.31 |
| | Payment for maintenance up to the date | 2013.06.08 |