Title:
SLURRY PRESSURE WAVE SIGNAL MODULATION APPARATUS AND METHOD
Document Type and Number:
WIPO Patent Application WO/2023/124814
Kind Code:
A1
Abstract:
A slurry pressure wave signal modulation apparatus and method, which relate to the technical field of petroleum drilling engineering. The apparatus comprises an electric motor (5), a valve plate (3), a main control circuit (23), an electric motor driving control circuit and an underground communication circuit, wherein the valve plate (3) can be driven by the electric motor (5) to rotate in an axial direction perpendicular to a flowing direction of a drilling fluid; the electric motor (5) and the valve plate (3) are arranged in a drilling fluid channel (2); and the drilling fluid channel (2), the electric motor (5), the valve plate (3), the main control circuit (23), the electric motor driving control circuit and the underground communication circuit are arranged in a drill collar.
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Inventors:
WANG JIAJIN (CN)
MAO WEIMIN (CN)
AI WEIPING (CN)
FAN YIFENG (CN)
DOU XIURONG (CN)
JIA HENGTIAN (CN)
WANG PENG (CN)
WEI ZHIGANG (CN)
WANG LEI (CN)
GUO XIANWEI (CN)
MAO WEIMIN (CN)
AI WEIPING (CN)
FAN YIFENG (CN)
DOU XIURONG (CN)
JIA HENGTIAN (CN)
WANG PENG (CN)
WEI ZHIGANG (CN)
WANG LEI (CN)
GUO XIANWEI (CN)
Application Number:
PCT/CN2022/136741
Publication Date:
July 06, 2023
Filing Date:
December 06, 2022
Export Citation:
Assignee:
CHINA NAT PETROLEUM CORP (CN)
CNPC ENG TECH RES & DEV CO LTD (CN)
CNPC ENG TECH RES & DEV CO LTD (CN)
International Classes:
E21B47/20
Foreign References:
| CN114483013A | 2022-05-13 | |||
| CN113622899A | 2021-11-09 | |||
| CN105863622A | 2016-08-17 | |||
| CN205745333U | 2016-11-30 | |||
| US20130162440A1 | 2013-06-27 |
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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