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从挑选出的98口石油勘探井中,最初测出的作为孔底温度(BHT)或钻杆试井(DST)的五百五十个温度值,成了突尼斯中部的地温梯度图基本资料。用DST作为标准,使用“全球统计”方法,修正BHT测量值。地温梯度范围从23℃至49℃/km。将地温梯度与构造,重力和石油资料比较表明: (1)地温梯度曲线的一般趋向反映了区域的主要构造方向。 (2)高低地温梯度带与正、负布格异常带相关。 (3)突尼斯中部五个最重要的油田位于40℃/km的地温梯度曲线附近。
Of the 98 oil exploration wells selected, the initial temperature of 550 as the bottom hole temperature (BHT) or drill pipe well test (DST) has become the basis for geothermal gradient maps in central Tunisia. Using DST as a standard, use the “global statistics” method to correct BHT measurements. The geothermal gradient ranges from 23 ° C to 49 ° C / km. The comparison of geothermal gradient with tectonic, gravity and petroleum data shows that: (1) The general trend of geothermal gradient curve reflects the main tectonic orientation of the region. (2) The geothermal gradient zone is related to the positive and negative Bouguer anomalies. (3) The five most important fields in central Tunisia are located near the geothermal gradient of 40 ℃ / km.