TY - JOUR
T1 - Evaluation of total organic carbon contents in carbonate source rocks by modified acid treatment method and the geological significance of acid-soluble organic matters
AU - Liu, Peng
AU - Wang, Xiaofeng
AU - Horita, Juske
AU - Fang, Xuan
AU - Zheng, Jianjing
AU - Li, Xiaofu
AU - Meng, Qiang
N1 - Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study was supported by Foundation of Sinopec Key Laboratory of Petroleum Accumulation Mechanisms, Foundation of State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, West Light Foundation of The Chinese Academy of Sciences, National Nature Science Foundation of China (Grant No. U1663202), U.S. Department of Energy Geosciences program (DE-SC0016271) and the Key Laboratory Project of Gansu Province (Grant No. 1309RTSA041).
Publisher Copyright:
© The Author(s) 2018.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Total organic carbon contents are an important parameter in evaluating hydrocarbon source rocks and it shows the hydrocarbon-generating potential of hydrocarbon source rocks. In this study, the total organic carbon of 16 carbonate rocks with different maturity level was determined by a modified acid treatment protocol of the elemental analyzer method. In the modified method, montmorillonite is used to thicken the residue of acid treatment and remaining acid solution. Then, total organic carbon values of “clay-paste” sample were analyzed by the element analysis method. The results of 16 carbonate rocks show that the total organic carbon values with the new method were greater than the conventional total organic carbon test in a majority of the samples. Additionally, the fraction of acid-soluble organic matters was investigated and it shows no clear relationship of the fraction of acid-soluble organic matters with maturity and total organic carbon values in source rocks. Hence, it indicates that the released acid-soluble organic matters are characterized by complex factors that influence their occurrence and compositions.
AB - Total organic carbon contents are an important parameter in evaluating hydrocarbon source rocks and it shows the hydrocarbon-generating potential of hydrocarbon source rocks. In this study, the total organic carbon of 16 carbonate rocks with different maturity level was determined by a modified acid treatment protocol of the elemental analyzer method. In the modified method, montmorillonite is used to thicken the residue of acid treatment and remaining acid solution. Then, total organic carbon values of “clay-paste” sample were analyzed by the element analysis method. The results of 16 carbonate rocks show that the total organic carbon values with the new method were greater than the conventional total organic carbon test in a majority of the samples. Additionally, the fraction of acid-soluble organic matters was investigated and it shows no clear relationship of the fraction of acid-soluble organic matters with maturity and total organic carbon values in source rocks. Hence, it indicates that the released acid-soluble organic matters are characterized by complex factors that influence their occurrence and compositions.
KW - Carbonate rocks
KW - acid-soluble organic matter
KW - conventional total organic carbon test
KW - hydrocarbon source rock evaluation
KW - organic abundance
UR - http://www.scopus.com/inward/record.url?scp=85059905129&partnerID=8YFLogxK
U2 - 10.1177/0144598718786034
DO - 10.1177/0144598718786034
M3 - Article
AN - SCOPUS:85059905129
SN - 0144-5987
VL - 37
SP - 219
EP - 229
JO - Energy Exploration and Exploitation
JF - Energy Exploration and Exploitation
IS - 1
ER -