Cracking conditions of crude oil under different geological environments
Cracking conditions of crude oil under different geological environments
复制标题
不同地质环境下原油裂解条件
DOI：
10.1007/s11430-008-5002-4
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发表时间：
2008-06
期刊：
影响因子：
--
通讯作者：
王兆云
中科院分区：
文献类型：
--
作者：
王兆云
烃源岩生油主要有3种存在状态，即源岩内分散型液态烃、源岩外分散型液态烃和源岩外浓缩型液态烃。由于热历史和周围介质条件的差异，以及有机质和无机质的相互作用，3种存在状态的液态烃具有不同的裂解条件。原油匹配不同介质的产气动力学实验表明，甲烷活化能的分布随介质的不同而变化。碳酸盐对原油的裂解条件有主要影响，能大幅度降低原油的裂解活化能，反映原油的裂解温度较低。泥岩次之，砂岩最小。碳酸盐岩、泥岩和砂岩对原油的催化裂化作用依次减弱。不同介质主要生气期对应的Ro值为：纯原油1.5%~ 3.8%、碳酸盐岩分散原油1.2%~ 3.2%、泥岩分散原油1.3%~ 3.4%、砂岩分散原油1.4%~ 3.6%。压力对原油裂解的影响比较复杂。在低升温速率条件下，压力对原油裂解和产气有抑制作用，而在高升温速率条件下，压力对原油裂解和产气的影响不明显。在不同的演化阶段，压力的作用也是不同的.以塔里木盆地中、下寒武统烃源岩为例，其原始生油量为2232.24× 108 t，剩余油和油裂解气量分别为806.21× 108 t和106.95× 1012 m3。
There are mainly 3 kinds of existing states of oil generating from source rocks, that is, dispersive liquid hydrocarbon inside of source rock, dispersive liquid hydrocarbon outside of source rock and concentrated liquid hydrocarbon outside of source rock. Because of the differences in thermal history and medium conditions around, and the interaction of organic and inorganic matter, the liquid hydrocarbon with 3 kinds of existing state has different cracking conditions. The gas generation dynamics experiments of crude oil matching different mediums indicate that the distribution of activation energy of methane changes a lot according to medium difference. The carbonate has a main influence on oil cracking conditions and can largely reduce its activation energy, which reflects the lower cracking temperature of crude oil. The mudstone takes a second place and the sandstone is the smallest. The catalytic cracking function to the oil of the carbonate, of the mudstone and of the sandstone changes weaken in turn. The correspondingRovalues of main gas generation period in different mediums are as follows: 1.5%–3.8% with pure crude oil, 1.2%–3.2% with dispersive crude oil in carbonate, 1.3%∼3.4% with dispersive crude oil in mudstone and 1.4%–3.6% with dispersive crude oil in sandstone. The influence of pressure to crude oil cracking is relatively complicated. In the low heating speed condition, pressure restrains the oil cracking and gas generation, but in the high heating speed condition, pressure has an indistinctive influence to the oil cracking and gas generation. Pressure also makes a different effort in different evolvement stage. Taking the middle and lower Cambrian source rocks in the Tarim Basin as an example, primary oil generating quantity is 2232.24×108t, residual oil and oil cracking gas quantity is 806.21×108t and 106.95×1012m3respectively.
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影响因子：
7.5
作者：
Zhaoping Meng
通讯作者：
Zhaoping Meng
影响因子：
64.8
作者：
D. Welte;B. Horsfield;D. Baker
通讯作者：
D. Welte;B. Horsfield;D. Baker
影响因子：
7.5
作者：
Huang Hai-ping
通讯作者：
Huang Hai-ping
DOI：
--
发表时间：
1984
期刊：
--
影响因子：
--
作者：
J. Hunt;A. McNichol
通讯作者：
J. Hunt;A. McNichol
DOI：
--
发表时间：
2002
期刊：
--
影响因子：
--
作者：
Wang Yi-gang
通讯作者：
Wang Yi-gang