Oil cracking to gases: Kinetic modeling and geological significance

被引：52
作者：
Tian Hui
Wang Zhaoming
Xiao Zhongyao
Li Xianqing
Xiao Xianming [1 ]
机构：
[1] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
[3] Tarim Oil Field Co, Korla 841000, Peoples R China
[4] China Univ Mining & Technol, Minist Educ, Key Lab Coal Resources, Beijing 100083, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2006年 / 51卷 / 22期
基金：
中国国家自然科学基金;
关键词：
oil cracking; kinetic modeling; thermal stability of crude oil; gas accumulation;
D O I：
10.1007/s11434-006-2188-8
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A Triassic oil sample from LN14 of Tarim Basin was pyrolyzed using the sealed gold tubes at 200-620 degrees C under a constant pressure of 50 MPa. The gaseous and residual soluble hydrocarbons were analyzed. The results show that the cracking of oil to gas can be divided into two distinct stages: the primary generation of total C1-5 gases from liquid oil characterized by the dominance of C2-5 hydrocarbons and the secondary or further cracking of C2-5 gases to methane and carbon-rich matters leading to the progressive dryness of gases. Based on the experimental data, the kinetic parameters were determined for the primary generation and secondary cracking of oil cracking gases and extrapolated to geological conditions to predict the thermal stability and cracking extent of crude oil. Finally, an evolution model for the thermal destruction of crude oil was proposed and its implications to the migration and accumulation of oil cracking gases were discussed.
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收藏
页码：2763 / 2770
页数：8
相关论文
共 23 条
[1]   EXPERIMENTAL SIMULATION IN A CONFINED SYSTEM AND KINETIC MODELING OF KEROGEN AND OIL CRACKING [J].
BEHAR, F ;
KRESSMANN, S ;
RUDKIEWICZ, JL ;
VANDENBROUCKE, M .
ORGANIC GEOCHEMISTRY, 1992, 19 (1-3) :173-189
[2]   Primary cracking of algal and landplant kerogens: Kinetic models of isotope variations in methane, ethane and propane [J].
Berner, U ;
Faber, E ;
Scheeder, G ;
Panten, D .
CHEMICAL GEOLOGY, 1995, 126 (3-4) :233-245
[3]  
CLAYPOOL GE, 1989, AAPG BULL, V73, P904
[4]   Kinetics of petroleum generation and cracking by programmed-temperature closed-system pyrolysis of Toarcian Shales [J].
Dieckmann, V ;
Schenk, HJ ;
Horsfield, B ;
Welte, DH .
FUEL, 1998, 77 (1-2) :23-31
[5]   Insights into oil cracking based on laboratory experiments [J].
Hill, RJ ;
Tang, YC ;
Kaplan, IR .
ORGANIC GEOCHEMISTRY, 2003, 34 (12) :1651-1672
[6]   AN INVESTIGATION OF THE IN-RESERVOIR CONVERSION OF OIL TO GAS - COMPOSITIONAL AND KINETIC FINDINGS FROM CLOSED-SYSTEM PROGRAMMED-TEMPERATURE PYROLYSIS [J].
HORSFIELD, B ;
SCHENK, HJ ;
MILLS, N ;
WELTE, DH .
ORGANIC GEOCHEMISTRY, 1992, 19 (1-3) :191-204
[7]  
Hunt J.M., 1996, Petroleum geochemistry and geology, V2nd
[8]   Temperature and pressure dependence of n-hexadecane cracking [J].
Jackson, KJ ;
Burnham, AK ;
Braun, RL ;
Knauss, KG .
ORGANIC GEOCHEMISTRY, 1995, 23 (10) :941-953
[9]   A MULTICOMPONENT OIL-CRACKING KINETICS MODEL FOR MODELING PRESERVATION AND COMPOSITION OF RESERVOIRED OILS [J].
KUO, LC ;
MICHAEL, GE .
ORGANIC GEOCHEMISTRY, 1994, 21 (8-9) :911-925
[10]   Structure of neurofilaments studied with scanning tunneling microscopy [J].
Liu, J ;
Tong, XJ ;
Pang, SJ ;
Zhai, ZH .
CHINESE SCIENCE BULLETIN, 1998, 43 (21) :1805-1809
123