Title:
MODIFIED ASPHALT PARTICLE AND PREPARATION METHOD AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/076268
Kind Code:
A1
Abstract:
Disclosed are a modified asphalt particle and a preparation method and application thereof, characterized in that the modified asphalt particle comprises asphalt and a modifier. The modifier comprises poly-sulfur and free sulfur. The sulfur element accounts for 10-40 weight percent of the total amount of the modified asphalt particle, and the poly-sulfur accounts for 30-70 weight percent of the total amount of the sulfur element. The total particle size of the modified asphalt particle is smaller than or equal to 150 μm. The modified asphalt particle provided in the present invention is excellent in high temperature performance, and can be used for preparing drilling fluid. Water-in-oil based drilling fluid obtained from the modified asphalt particle provided in the present invention has low plastic viscosity, high dynamic shear force, high dynamic plastic ratio, and high emulsion-breaking voltage, and improves the high temperature resistance and cutting carrying capability of a system. Particularly, a high emulsion-breaking voltage is still maintained in water-in-oil based drilling fluid having high water content, thereby ensuring the electric stability of the system.
Inventors:
FU LI (CN)
GUO JIAOHE (CN)
YAO HANRONG (CN)
LIU SHUHUA (CN)
ZHANG JIANFENG (CN)
GUO JIAOHE (CN)
YAO HANRONG (CN)
LIU SHUHUA (CN)
ZHANG JIANFENG (CN)
Application Number:
PCT/CN2016/104188
Publication Date:
May 11, 2017
Filing Date:
November 01, 2016
Export Citation:
Assignee:
CHINA PETROLEUM & CHEM CORP (CN)
DALIAN RES INST OF PETROLEUM AND PETROCHEMICALS SINOPEC CORP (CN)
DALIAN RES INST OF PETROLEUM AND PETROCHEMICALS SINOPEC CORP (CN)
International Classes:
C08L95/00; C08K3/06
Foreign References:
| CN104150801A | 2014-11-19 | |||
| CN103275498A | 2013-09-04 | |||
| US6514916B1 | 2003-02-04 |
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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