A-TYPE HEAVY OIL - NIPPON OIL CORP

Title:

A-TYPE HEAVY OIL

Document Type and Number:

Japanese Patent JP2007326977

Kind Code:

A

Abstract:

To provide an A-type heavy oil excellent in low temperature performances, and to provide an evaluation method by which the low temperature performances of an A-type heavy oil can simply be evaluated with a small amount of a specimen in a short time.

This A-type heavy oil is characterized in that a solid phase hydrogen rate represented by an expression (2) is ≤0.5% in a correlation curve represented by an expression (1) and obtained by measuring the relaxation time of hydrogen atoms in the A-type heavy oil by a pulse NMR method at a temperature of -20°C. I(t)=IS(t)+IL(t) (1), wherein t is an elapsed time from a hydrogen atom excitation time; I(t), IS(t), and IL(t) are signal intensities corresponding to the energies of hydrogen atoms contained in the whole, solid phase component, and liquid phase component of the A-type heavy oil, respectively, at the elapse of time t. The solid phase hydrogen ratio (%)=[IS(0)/I(0)]×100 (2), wherein IS(0) and I(0) are the values of IS(t) and I(t) at t=0, respectively.

Inventors:

OKUBO TAKAMIKI
FUKUDA KAZUKI
IWATANI HISAAKI

Application Number:

JP2006160141A

Publication Date:

December 20, 2007

Filing Date:

June 08, 2006

Export Citation:

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Assignee:

NIPPON OIL CORP

International Classes:

C10L1/04; C10L1/192

Domestic Patent References:

JP2004257938A	2004-09-16
JPH0881688A	1996-03-26
JP2004502165A	2004-01-22
JP2005225922A	2005-08-25

Attorney, Agent or Firm:

Yoshiki Hasegawa
Shiro Terasaki

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