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   orientation of exploration 在 地质学 分类中 的翻译结果: 查询用时:0.651秒
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石油天然气工业
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orientation of exploration
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  勘探方向
    Therefore, try to discover volcanic reservoirs and find new reserve replacement area have become an important orientation of exploration.
    因此积极探索火山岩储层勘探新领域,寻找新的储量接替区已成为一个重要的勘探方向
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  “orientation of exploration”译为未确定词的双语例句
    CBM Geology and Orientation of Exploration and Development of Eastern Fringe of Ordos Basin
    鄂尔多斯盆地东缘煤层气地质及勘探开发方向
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>=The peculiarity of source kitchen in Bozhong depression, Offshore Bohai Bay Basin are that source rocks are predominated with Ⅰ and Ⅱ type organic matter, thermal maturity range from high mature to overmature stage. The fundamental cognition of previous petroleum resource assessment indicated that gas generation amount exceeds oil generation amount, gas to oil ratio(GOR) of generated hydrocarbon approximates 1500(m3/T). Many explorers and geologists believe that Bozhong depression is gas-rich area, hence natural...

>=The peculiarity of source kitchen in Bozhong depression, Offshore Bohai Bay Basin are that source rocks are predominated with Ⅰ and Ⅱ type organic matter, thermal maturity range from high mature to overmature stage. The fundamental cognition of previous petroleum resource assessment indicated that gas generation amount exceeds oil generation amount, gas to oil ratio(GOR) of generated hydrocarbon approximates 1500(m3/T). Many explorers and geologists believe that Bozhong depression is gas-rich area, hence natural gas is main orientation of exploration activitities. This paper presents the new idea of gas generation assessment in the areas with Ⅰ and Ⅱ type oil prone source rocks,According to the open- and composite-pyrolysis models, Type-Ⅰ and Type-Ⅱ kerogen has the low potential for deep gas generation. This implies that basins with deeply buried lacustrine sapropelic source rocks are not likely to be good gas source kitchen. The key control factor of GOR is the type of organic matter(or HI). The petroleum expulsion efficiency(PEE) of Type-Ⅰ and Type-Ⅱ source rocks at the bottom of oil windows(about 1.3%VRo achieved 80%-90%, most of generated oil had been expelled out of source rocks, the small amounts of remaining unexpelled oil and residual kerogens generated minor natural gas, most gas will dissolved in the oil.Therefore, the uplifts zone surrounding Bozhong sag are rich in oil not natural gas, although the thermal maturity of Shahejie Formation and Dongying Formation source rocks range from high mature to overmature stage. The previous gas yields data and models are unsuitable for natural gas resource assessment, because these data and models were based on the results of closed system pyrolysis with no consideration of oil expulsion from source rocks, which overestimated the gas yields of source rocks, especillly for Type-Ⅰ and Type-Ⅱ source rocks. The evaluation of natural gas resource must based on the parameters of open system pyrolysis with high oil expulsion efficiency, according to the kinetics model and mass balance approaches. Basins and petroleum systems with Ⅰ and Ⅱ type oil prone source rocks are always oil-rich, regardless the maturity of source kitchen range from high mature to overmature stage, unless the generated oil had been cracked to the gas. Source rocks in the condensate and wet gas stage or dry gas stage does not mean the exploration orientadon focused on gas accumulations, and natural gas predominated in the whole petroleum resource. This new concept has important implication to the petroleum resource assessment and exploration stratagem of China Offshore.

渤中凹陷烃源灶具有机质类型好(主体为Ⅱ型和Ⅰ型)和有机成熟度高(主体处于过成熟阶段)的特点,已有的资源评价的基本认识是这一地区生气量要大于生油量,生成烃类的气油比约为1500(m3/T),许多勘探家和学者认为这一地区应富含天然气。本文提出Ⅰ型和Ⅱ型源岩生气评价的新思路,论证了深埋的Ⅰ型和Ⅱ型源岩灶并非是高效的气源灶,其生气量远低于Ⅲ型源岩灶。沉积盆地气油比的主要控制因素是源岩氢指数,Ⅰ型和Ⅱ型源岩至生油窗底界排油效率可高达80%-90%,由于生成的油绝大部分已排离源岩,在进一步成熟过程仅生成少量天然气,生成的天然气可能溶于油藏之中。因此,即使渤中凹陷目前东营组和沙河街组源岩处于在高过成熟阶段,环渤中凹陷发现的仍主要是液态烃。已有的油气产率图版主要基于封闭体系模拟实验,没有考虑石油的排出,对于Ⅰ型和Ⅱ型源岩生气量评价明显过高,它不适用天然气资源评价。对于目前处于高过成熟的Ⅰ型和Ⅱ型源岩,要以开放体系高排油效率的思想,按生烃动力学和质量平衡的方法分析生排烃量在地质历史中演化。对于主体为Ⅰ型和Ⅱ型源岩灶的油气系统或沉积盆地,只要其生成的石油没有经历高温裂解,即使源岩灶处于高过成熟阶段,我们仍应以找油为主,源岩处于凝...

渤中凹陷烃源灶具有机质类型好(主体为Ⅱ型和Ⅰ型)和有机成熟度高(主体处于过成熟阶段)的特点,已有的资源评价的基本认识是这一地区生气量要大于生油量,生成烃类的气油比约为1500(m3/T),许多勘探家和学者认为这一地区应富含天然气。本文提出Ⅰ型和Ⅱ型源岩生气评价的新思路,论证了深埋的Ⅰ型和Ⅱ型源岩灶并非是高效的气源灶,其生气量远低于Ⅲ型源岩灶。沉积盆地气油比的主要控制因素是源岩氢指数,Ⅰ型和Ⅱ型源岩至生油窗底界排油效率可高达80%-90%,由于生成的油绝大部分已排离源岩,在进一步成熟过程仅生成少量天然气,生成的天然气可能溶于油藏之中。因此,即使渤中凹陷目前东营组和沙河街组源岩处于在高过成熟阶段,环渤中凹陷发现的仍主要是液态烃。已有的油气产率图版主要基于封闭体系模拟实验,没有考虑石油的排出,对于Ⅰ型和Ⅱ型源岩生气量评价明显过高,它不适用天然气资源评价。对于目前处于高过成熟的Ⅰ型和Ⅱ型源岩,要以开放体系高排油效率的思想,按生烃动力学和质量平衡的方法分析生排烃量在地质历史中演化。对于主体为Ⅰ型和Ⅱ型源岩灶的油气系统或沉积盆地,只要其生成的石油没有经历高温裂解,即使源岩灶处于高过成熟阶段,我们仍应以找油为主,源岩处于凝析油-湿气阶段甚至处于干气阶段,并不意味着区域勘探方向应以找天然气为主,资源量构成上天然气为主导,这一新理念对中国油气勘探宏观决策和资源评价具重要意义。

 
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