摘要
方法 在假定地层结构模型的基础上 ,通过数值模拟方法 ,评价了断裂宽度、断裂开启时间与油气运移速度及运移量之间的关系 ,并定性地评价了与断裂相接触的油气初次运移层、生油层质量与油气运移速度及运移量之间的关系。目的 评价断裂对油气运移的作用。结果 在生油岩生油能力一定的情况下 ,断裂宽度与油气运移速度成反比 ,而与油气运移总量的关系不大 ;在相同地层结构模型中 ,间歇性开启断裂中的油气运移速度较永久性开启断裂快 ;在不同地层结构模型中 (同时间内 ) ,初次运移层的质量是决定油气运移量的主要因素。结论 生油岩的生、排烃能力 ,决定着断裂对油气的运移速度及运移总量 ;断裂与初次运移层及其与储层之间的接触关系 。
Method From presumed formation structural model and numerical simulation, relationships among fracture width, opening time, hydrocarbon migration rate and volume are assessed. Also, the correlation among hydrocarbon initial migration fomation contacted with fractures, oil source layer quality, hydrocarbon migration rate and volume are evaluated qualitatively. Purpose\ To evaluate effect of fracturing upon hydrocarbon migration. Result\ Given oil sourcing capacity remains the same, fracture width is inverse proportion to hydrocarbon migration rate and not closely related to migration volume. In the same structural model, hydrocarbon migration rate within interim opening fractures is faster than that of permanent ones. Quality of initial migration formation is key element determining migrated volume if different stuctural models used during the same time. Conclusion\ Migration rate and volume of hydrocarbon depend heavily on generating and discharging capacities of oil source rock. Moreover, contact pattem between fracture and initial migration layer is of great importance for hydrocarbon saturation in formation.
出处
《特种油气藏》
CAS
CSCD
2000年第1期7-9,共3页
Special Oil & Gas Reservoirs
关键词
数值
评价
断裂
油气运移
生油层
储集层
numerical simulation, evaluation, fracture, hydrocarbon migration, effect, source bed, migration bed, reservoir, formation structural model
