Inventor

ZENG YIJIN

CN6 patents

⚠️ This page may combine multiple inventors who share the name “ZENG YIJIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CHINA PETROLEUM & CHEM CORP

4 patents

US9739141B2Aug 22, 2017

Data transmission system and method for transmission of downhole measurement-while-drilling data to ground

CHINA PETROLEUM & CHEM CORP34 citations88

US11913324B2Feb 27, 2024

Downhole multidimensional imaging feature extraction method and imaging apparatus

CHINA PETROLEUM & CHEM CORP0 citations42

US10927612B2Feb 23, 2021

Downhole auxiliary drilling apparatus

CHINA PETROLEUM & CHEM CORP0 citations38

US10571596B2Feb 25, 2020

Resistivity measurement while drilling device and method

CHINA PETROLEUM & CHEM CORP0 citations35

EXPLORATION & PRODUCTION RES I

1 patent

US7158886B2Jan 2, 2007

Automatic control system and method for bottom hole pressure in the underbalance drilling

EXPLORATION & PRODUCTION RES I37 citations82

CHINA PETROLEUM & CHEMICAL

1 patent

US7426965B2Sep 23, 2008

Power transmission unit of an impactor, a hydraulic jet impactor and the application thereof

CHINA PETROLEUM & CHEMICAL1 citations48