Title:
【発明の名称】コアサンプラー
Document Type and Number:
Japanese Patent JP2001514351
Kind Code:
A
Abstract:
A hydrostatic working device for taking samples from the bottom of the sea. The working device has an outer tube (1), the cylinder tube (1), the cylinder tube with lead-through (5 and 7), and an inner tube (2), the sampling tube with a piston, whereby the space between the outer tube (1) and the inner tube (2), with the piston at the upper end, constitutes a low pressure chamber (29) filled by air under a moderate pressure, in order to keep the sampling tube (2) in an upper position until the valve opens for a working stroke. When the working device is used as a corer the sampling tube is at its lower end equipped with a catcher (4). When the tool is used as a CPT the lead-throughs (5 and 7) are replaced by (20 and 40) and the piston (3) with a piston (19), and the sampler tube (2) is replaced by a probe, and a choke valve (14) is replaced by a pressure compensated volumetric flow valve (39).
Inventors:
Calle Adal
Application Number:
JP2000507913A
Publication Date:
September 11, 2001
Filing Date:
August 22, 1998
Export Citation:
Assignee:
Calle Adal
International Classes:
E21B25/18; E21B25/00; (IPC1-7): E21B25/00
Attorney, Agent or Firm:
Kaoru Furuya (2 outside)