Influence of CO2 leakage from oil-producing wells on crop growth based on improved CASA model. Issue 2 (17th January 2016)

• Record Type: Journal Article
• Authors: Xu, Yaqing; Zhang, Shaoliang; Hou, Huping; Zhang, Yuanyuan; Chen, Fu; Liu, Xin; Yang, Yongjun
• Is Part Of: International journal of remote sensing. Volume 37:Issue 2(2016)
• Page Start: 290
• Page End: 308
• Publication Date: 2016-01-17
• Subjects: Remote sensing -- Periodicals; Télédétection -- Périodiques; 621.3678
• DOI: 10.1080/01431161.2015.1125552
• Languages: English
• ISSNs: 0143-1161

Abstract

ABSTRACT: As a significant application of CO2 geological storage technology, CO2 -enhanced oil recovery (CO2 -EOR) considers impacts on ecosystems due to the risk of CO2 leakage from oil-producing wells. It is critical to clarify the relationship between CO2 leakage and vegetation growth, because large numbers of wells are situated in the midst of cropland. In this study, we calculated the net primary productivity (NPP) of crops to examine the correlation between oil-producing wells and crop growth using Pleiades' high-spatial resolution remote-sensing imaging in a CO2 -EOR experimental area in Shandong Province, China, basing our methods on the improved Carnegie–Ames–Stanford approach (CASA) model. Atmospheric CO2 concentrations at varying distances from one of the producing wells were collected by wireless sensors and hand-held equipment, and analysis was conducted in regard to the impact of CO2 leakage from producing wells on crop growth according to a simple sampling method. The results indicated that increased CO2 concentration resulting from leakage from producing wells has a slightly positive influence on crop productivity, with the influence ranges correlated with wind direction and velocity. The variance of NPP resulting from increased CO2 concentration and wind direction ranged from 5.0 to 33.7%.