论文部分内容阅读
在过去的地震勘探中主要是运用构造地震学研究地下的构造圈闭油气藏。最近几年来,在地球科学领域中发展起来一门叫做地层地震学的新兴学科。它是介于地震勘探和地质学之间的边缘科学。利用地震资料研究岩性、岩相变化和岩石孔隙中所含流体性质,以判断岩性,寻找地层圈闭油气藏,从而达到直接找油气的目的。应用速度谱求取层速度就是地层地震学中研究地层岩性的一项内容之一。我们在YGH海区进行钻探工程设计和地质录井时,由于海上没有任何资料,尝试应用速度谱求取层速度解释岩性。经钻井结果表明,此方法具有一定的参考价值,并获得初步效果。
In the past, seismic exploration mainly used structural seismology to study the subsurface structural trap oil and gas reservoir. In recent years, an emerging discipline called stratigraphic seismology has developed in the field of geosciences. It is the marginal science between seismic exploration and geology. The use of seismic data to study the lithology, lithofacies and rock pores contained in the fluid properties to determine the lithology, looking for stratigraphic trap reservoirs, so as to achieve the purpose of finding oil and gas directly. The application of velocity spectrum to obtain velocity is one of the stratigraphic seismology research stratigraphy lithology. When we conducted drilling engineering design and geological logging in the YGH sea area, we tried to explain the lithology by calculating the velocity of the layer using the velocity spectrum because there was no information at sea. The drilling results show that this method has some reference value, and obtain the initial effect.