Application of Thermal Neutron Imaging System in Oil & Gas Field development

2019 5th International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Xu, Xiaohu^1^2 ; Fang, Huijun^1^2 ; Lin, Jingde^1^2 ; Liu, Xinwei^1^2 ; Chen, Gang^1^2

PetroChina Coalbed Methane Company Limited, Xi'an, Shaanxi, China^1

National Engineering Research Center of China United Coalbed Methane Company Limited, Beijing, China^2

关键词: Formation-water salinity;    Gas field development;    Geological characteristics;    Interpretation model;    Oil and gas reservoir;    Residual oil distribution;    Thermal neutron capture;    Thermal neutron imaging;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/295/4/042004/pdf
DOI  :  10.1088/1755-1315/295/4/042004

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The correct identification of oil and gas reservoirs is very important in oil and gas field production. To solve the problem of oil and gas reservoir evaluation in low salinity and low porosity reservoirs, thermal neutron imaging system(TNIS) is introduced. The advantage of TNIS is that it can record a large number of formation information through multiple detectors to obtain imaging documents, allowing intuitive quantitative analysis of formation, and calculate oil and gas saturation through thermal neutron capture cross section, attenuation spectrum and capture spectrum, so as to obtain oil/gas/water distribution near wellbore. In the processing, interpretation and evaluation of thermal neutron imaging logging data, the interpretation model, parameters and criteria are established according to the geological characteristics of lithology and formation water salinity of the target block, which improves the interpretation coincidence rate. Field application shows that thermal neutron imaging logging has achieved sound effects in identifying watered-out zone, potential zone, gas reservoir and residual oil distribution monitoring.