综合物化探方法直接找油气的尝试
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摘要
合物化探方法进行了直接找油气的尝试。其主要过程是由已知油气藏出发，找出它与物化操异常的关系，建立物化操直接找油气的初步模式；然后，应用该模式对邻区进行油气预测。对油气物化探异常起作用的因素有：油气圈闭、油气目的层、油气渗漏带和油气蚀变带等4种。探测前两种起因的主要方法是地震法，探测后两种起因的方法有：磁法、激电类电法和化探。经过对ENC地区的研究结果表明，综合物化探直接找油气技术是行之有效的。
In ENC area, trial direct hydrocarbon accumulation discovery was made byjointly using geochemical survey and geophysical methods: seismic method havinghigh-resolution P-wave and converted S-wave, gravimetric method, magneticmethod, micromagnetic method, etc. The technique works by finding relations between known hydrocarbon trap and geochemical anomaly or various geophysicalanomalies to form a preliminary pattern of direct hydrocarbon discovery, which isthen used to predict hydrocarbon accumulation in an adjacent area. The geophysicaland geochemical anomalies result from four factors: hydrocarbon trap, object reservoir, hydrocarbon seepage zone and hydrocarbon-altered zone. The former two factors can be determined mainly by seismic method, and the latter two by magnetic,induced electric and geochemical methods. The research result in ENC area showsthat the technique for direct hydrocarbon discovery using joint geophysical and geochemical methods is feasible.
In ENC area, trial direct hydrocarbon accumulation discovery was made byjointly using geochemical survey and geophysical methods: seismic method havinghigh-resolution P-wave and converted S-wave, gravimetric method, magneticmethod, micromagnetic method, etc. The technique works by finding relations between known hydrocarbon trap and geochemical anomaly or various geophysicalanomalies to form a preliminary pattern of direct hydrocarbon discovery, which isthen used to predict hydrocarbon accumulation in an adjacent area. The geophysicaland geochemical anomalies result from four factors: hydrocarbon trap, object reservoir, hydrocarbon seepage zone and hydrocarbon-altered zone. The former two factors can be determined mainly by seismic method, and the latter two by magnetic,induced electric and geochemical methods. The research result in ENC area showsthat the technique for direct hydrocarbon discovery using joint geophysical and geochemical methods is feasible.
引文
1 Alistair R B. The value of seismic amplitude. The Leading Edge of Exploration , 1987,10(1):30～33
2 Robert J P Seismic detection of overpressuring and fracturing:An example from the Qaidam Basin,People's Republic of China.Geophysics,1993,58(10):1532～1542
3袁业培,金文丽,金红.高精度重力探测油气藏的可能性.石油地球物理勘探,1995,3O(1):139～144
4 Machel H G and Burton E A . Chemical and microbial processes causing anomalous magnetization in environments affected by hydrocarbon seepage . Geophysics , 1991 ,56(5):598～605
5 Ronald W K等著,张厚德译.生物地球化学在探测油气微渗漏中的潜在应用.国外油气勘探,1993,5(2):223～236
2 Robert J P Seismic detection of overpressuring and fracturing:An example from the Qaidam Basin,People's Republic of China.Geophysics,1993,58(10):1532～1542
3袁业培,金文丽,金红.高精度重力探测油气藏的可能性.石油地球物理勘探,1995,3O(1):139～144
4 Machel H G and Burton E A . Chemical and microbial processes causing anomalous magnetization in environments affected by hydrocarbon seepage . Geophysics , 1991 ,56(5):598～605
5 Ronald W K等著,张厚德译.生物地球化学在探测油气微渗漏中的潜在应用.国外油气勘探,1993,5(2):223～236
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