Open AccessSimulation of thermochemical sulfate reduction of gaseous hydrocarbons in Wushenqi area, Ordos Basin, China
Author(s) -
Jiayi Yao,
Qingfen Kong,
Liyong Fan,
Rui Deng,
Youshun Sun,
Min Liu,
Shuyong Shi,
Chengsheng Chen,
Yunpeng Wang,
Huijuan Guo
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/360/1/012012
Subject(s) - maturity (psychological) , sulfate , propane , butane , thermal , petroleum exploration , petroleum , structural basin , natural gas , geology , refinery , hydrocarbon , geochemistry , mineralogy , environmental science , chemistry , petroleum engineering , thermodynamics , paleontology , environmental engineering , catalysis , organic chemistry , physics , psychology , developmental psychology
Prediction of the H 2 S distribution is critical to lower the risks during petroleum exploration and development in the exploration area. Natural gas of two wells produced from the Ordovician Majiagou Formation Ma5-6 section from Wushenqi area show great difference in H 2 S content. To investigate whether the different thermal maturity of the two wells contributes to the different H 2 S content, the thermal mature history and transformation ratio of gas hydrocarbons and sulfate into H 2 S and CO 2 through TSR (thermochemical sulfate reduction) were simulated by using Petromod 2016. Simulation result shows that difference of thermal maturity of the two wells is about 0.6%. Propane and butane have all been consumed to generate H 2 S. The transformation ratio of ethane is higher for the well with higher thermal maturity. The high H 2 S content in the well with high thermal maturity and no H 2 S in the well with lower thermal maturity was not caused by the different thermal maturity. Some other geological factors should be considered.