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在南海进行了8个航次的调查,发现汞地球化学异常出现在油气藏或含油气凹陷上方的海底沉积物、海水和海面大气中.这些介质中的汞异常经常互相叠置,且与其他油气化探指标组成综合异常.汞异常一般规模较大,中等以上强度;平面上为顶端块状异常,剖面上为相对连续的异常坪.见有汞异常浓度由沉积物向上经底层、表层海水到海面大气渐次降低的趋势.文中列举了实例,证明汞是一种有效的海上油气化探指标.
A survey of 8 voyages conducted in the South China Sea found mercury geochemical anomalies to appear in the seabed sediments, seawater and sea surface above oil and gas reservoirs or sags, and the anomalies of mercury in these media often overlap one another and with other hydrocarbons Geochemical indicators constitute a comprehensive anomaly. Mercury anomalies generally larger, more than moderate intensity; planar top block anomalies, cross-section is relatively continuous anomaly. See mercury anomalous concentration from the sediment up through the bottom, the surface water to The atmosphere on the sea surface is gradually decreasing, and examples are given to prove that mercury is an effective indicator for geochemical exploration of offshore oil and gas.