Title:
ULTRAHIGH-TEMPERATURE-RESISTANT FILTRATE REDUCER AND PREPARATION THEREOF, OIL-BASED DRILLING FLUID AND OIL FIELD DRILLING METHOD
Document Type and Number:
WIPO Patent Application WO/2024/046265
Kind Code:
A1
Abstract:
An ultrahigh-temperature-resistant filtrate reducer and the preparation thereof, an oil-based drilling fluid and an oil field drilling method. The ultrahigh-temperature-resistant filtrate reducer is prepared by reacting a lithium magnesium silicate with an alkenyl-containing silane coupling agent to prepare an alkenyl-containing silane-modified lithium magnesium silicate, and then subjecting the alkenyl-containing silane-modified lithium magnesium silicate to a copolymerization reaction with isoprene, 4-vinylbenzenesulfonic acid-tetrabutylphosphonium salt, styrene and vinylimidazole. The ultrahigh-temperature-resistant filtrate reducer is low in terms of an addition amount, has an obvious filtrate reduction effect, and also has the characteristics of resistance to ultrahigh temperatures, little influence on the rheology of an oil-based drilling fluid, etc.
Inventors:
TAO HUAIZHI (CN)
AI JIAWEI (CN)
CHEN JUNBIN (CN)
SHU XIAOBO (CN)
MING XIANSEN (CN)
ZHOU YANG (CN)
YUAN ZHIPING (CN)
JING MINJIA (CN)
AI JIAWEI (CN)
CHEN JUNBIN (CN)
SHU XIAOBO (CN)
MING XIANSEN (CN)
ZHOU YANG (CN)
YUAN ZHIPING (CN)
JING MINJIA (CN)
Application Number:
PCT/CN2023/115248
Publication Date:
March 07, 2024
Filing Date:
August 28, 2023
Export Citation:
Assignee:
CHINA NAT PETROLEUM CORP (CN)
CNPC CHUANQING DRILLING ENG CO (CN)
CNPC CHUANQING DRILLING ENG CO (CN)
International Classes:
C08F236/08; C08F212/08; C08F212/14; C08F226/06; C09K8/03; C09K8/24
Foreign References:
| CN108715624A | 2018-10-30 | |||
| CN111875758A | 2020-11-03 | |||
| US20140080985A1 | 2014-03-20 | |||
| US20200115612A1 | 2020-04-16 |
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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