| 摘要 |
PCT No. PCT/BE97/00005 Sec. 371 Date Nov. 19, 1998 Sec. 102(e) Date Nov. 19, 1998 PCT Filed Jan. 15, 1997 PCT Pub. No. WO97/26439 PCT Pub. Date Jul. 24, 1997A core sampling method, particularly for the oil industry, wherein actual core sampling is performed by means of a core sampler (1) comprising at least one Inner barrel (5), an outer barrel (2) and a bit (3), and a substantially axial compressive force (F) is exerted on the top (7A) of a core sample (7) being formed, at least during a major part of the core sampling process, said force being within a range determined particularly on the basis of the material of the core sample (7), whereafter the force (F) is removed at the latest before the core sample (7) is withdrawn from the inner barrel (5). A core sampler for carrying out the method is also provided.
|
