Title:
REMOTE CONTROLLED WIRE LINE CORE SAMPLING DEVICE
Document Type and Number:
Japanese Patent JP3803338
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To attain an increased efficiency of work and the maintenance of a hole wall by using a submerged type boring machine in the sea bottom and adapting a wire line system.
SOLUTION: This wire line core sampling device uses a boring rod held by the chuck of the boring machine, a wire line core barrel having a bit for annularly excavating the ground at the tip, an overshot assembly detachably incorporated therein, and an overshot assembly 5 having the function of being engaged with the upper end part of the assembly. In this device, a water swivel 18 including water feed ports 3 and 4 at an upper portion and a lower portion and the modified built-in overshot assembly 5 resident in the middle thereof is used.
Inventors:
Nomoto Monro
Yamanaka Isao
Hiroshi Tanaka
Takahiko Tsuchiya
Yamanaka Isao
Hiroshi Tanaka
Takahiko Tsuchiya
Application Number:
JP2003313972A
Publication Date:
August 02, 2006
Filing Date:
September 05, 2003
Export Citation:
Assignee:
Mitsui Shipbuilding Co., Ltd.
Christensen Maikai Co., Ltd.
Toho Underground Machinery Co., Ltd.
Christensen Maikai Co., Ltd.
Toho Underground Machinery Co., Ltd.
International Classes:
E21B25/02; E02D1/04; G01N1/08; (IPC1-7): E21B25/02; E02D1/04; G01N1/08
Domestic Patent References:
| JP711860A | ||||
| JP5263582A | ||||
| JP2002322888A |
Attorney, Agent or Firm:
Haruka Oda
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