Chengdu University of Technology

Cnpc Chuanqing Drilling Engineering Company Limited

Ccdc Petroleum Drilling & Production Technology Co Ltd

Xiaofeng Yang

Jian Yang

Min Gu

Qing Li

Guoqiang Zeng

Shimin Hu

Chuanhao Hu

Lei Li

Weicheng Li

Liexiang Han

Shiming Dong

Sheng Yu

Kunpeng Yao

Zuo Chen

Jianlin Yao

Xiaoping Fu

Zhijun Lyu

Gang Zhou

Wencai Chen

Bin Liu

Ming Feng

Yong Li

The present disclosure provides a multi-parameter calibration system for a spectrometer based on a nanosecond light source, including a main channel for outputting nuclear pulse signals, and a coincidence channel for outputting the nuclear pulse signals. Each channel uses current nuclear pulse signals to drive a light-emitting diode (LED) to emit nuclear pulse optical signals, and a simulated scintillator is irradiated to emit nanosecond nuclear pulse optical signals. The present disclosure can respectively test and calibrate multiple parameter performance indexes of the spectrometer throughput baseline restoration spectrometer. The stability of the spectrometer is tested and calibrated through output of certain regular nuclear pulse signals.

Multi-parameter test and calibration system and method for spectrometer based on nanosecond light source

The present disclosure provides a nuclear detection simulation device based on a nanosecond light source and a nuclear signal inversion technology. Electronic circuits and nuclear pulse current signals are used to drive blue LEDs to emit nuclear pulse optical signals, so as to simulate a scintillator to receive &#x3b3; radiation to emit light, and can simulate point sources and area sources, organic scintillator detectors and inorganic scintillators, scintillation efficiency and detection efficiency, radioactive sources, fast components and slow components, multi-type nuclear pulse signals, a statistical fluctuation phenomenon of nuclear pulses, the electron pair effect, the Compton effect, the photoelectric effect, and self-radiation of the scintillator, generate single or piled-up pulse signals, corresponding energy spectrum curves, and an environmental background spectral line. 3D visualization configuration and a nuclear signal detection process can be subjected to animated demonstration.

Nuclear detection simulation device based on nanosecond light source and nuclear signal inversion technology

A dual-speed and dual-core enhanced drilling equipment which has an outer cylinder, a downhole power device, a large cutting head and a small cutting head. Specifically, the large cutting head has a first centerline, a through hole arranged along the first centerline and a first diameter. The outer cylinder, which is sleeved outside the downhole power device, is connected to the upper drill string with the large cutting head to enable rotation among the large cutting head, downhole power device and upper drill string. The downhole power device has a power generation section capable of generating power, and a rotation output section which connects to, and provides independent power for the small cutting head, so that the small cutting head revolves around the first centerline under the driving of the upper drill string while rotating under the driving of the downhole power device.

Dual-speed dual&#x2014;core enhanced drilling equipment

Growing community of inventors

Chengdu, China

Xiaofeng Yang