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塔里木盆地志留系分布面积大,油气显示丰富,是寻找大油气田的重要领域。随着勘探程度的不断提高,地层岩性油气藏已成为志留系主要的找油方向,目前获工业油气流的层位主要集中在柯坪塔格组上段。有效储集层主要为形成于潮坪、滨岸及三角洲环境的石英含量大于65%的砂岩。海平面升降变化造成的多次海进、海退旋回,有利于多套储盖组合及地层岩性圈闭的形成。凹陷腹地可能存在保存较好的原生古油藏。燕山-喜马拉雅运动期烃类的再次充注,形成塔北不整合遮挡和塔中地层超覆等非构造油气藏,油气勘探前景广阔。
The Silurian in the Tarim Basin has a large area of distribution and abundant oil and gas. It is an important area for finding large oil and gas fields. With the continuous improvement of exploration, stratigraphic lithologic reservoirs have become the main direction for Silurian oil exploration. At present, the layers of industrial oil and gas flow are mainly concentrated in the upper part of the Kepingtage Formation. The effective reservoirs are mainly sandstones with quartz contents greater than 65% formed in tidal flat, coastal and delta environments. Sea-level changes caused by sea changes in many times, sea back into circulation, is conducive to the formation of multiple sets of reservoir-cap formation and stratigraphic lithological traps. There may be well-preserved proterozoic reservoirs in the depression. During the Yanshan-Himalayan hydrocarbon re-charge, non-structural reservoirs such as the unconformity of the Tabei formation and the overthrust of the Tazhong formation have been formed, and the prospect of oil and gas exploration is promising.