利用粘球形藻干酪根的动力学特征模拟塔中A井O2＋3碳酸盐岩段的生烃量

APPLICATION CHEMICAL KINETIC PROPERTIES OF GLOEOCAPSOMORPHA PRISCA KEROGEN IN CALCULATING THE QUANTITY OF HYDROCARBON GENERATION OF O_(2+3) CARBONATE SOURCE BED OF TAZHONG A WELL

粘球形藻是塔里木盆地奥陶系海相碳酸盐岩烃源岩和全球奥陶系烃源岩的重要生烃母质，根据粘球形藻干酪根的热解实验和化学反应动力学串联一级反应原理，可求出该干酪根任意生烃率时的表观活化能，指前因子等动力学参数，借此建立了化学动力学生烃强度和生烃量求取模型，并模拟计算了塔中A井O2＋3碳酸盐岩段在地质历史上的生烃强度和累积生烃量。

Gloeocapsomorpha prisca is one of important sedimentary organic matter of Ordovician's marine carbonate source rock in Tarim basin,even all over the world.According to the chemical kinetic theory of the first grade serial reaction with the pyrolysis experimental data on G.prisca kerogen,the kerogen's kinetic parameters can be obtained,including:apparent activation energy and A factor distribution at any HC generation rate,so the kinetic model was developed which offers a quantitative approach to the evaluation of HC generation.The kinetic model was applied in calculating oil and gas generation intensity and quantity of Ordovician's carbonate source bed of TAZHONG A well in geological history in Tarim basin.