神木气田新增探明储量区地震预测技术及应用效果

发布时间：2018-07-11 15:28

本文选题：薄储层 + 低渗透　；参考：《西安石油大学》2015年硕士论文

【摘要】：本论文根据神木气田地震勘探技术发展的现状和前景,结合长庆油田油气勘探实际生产的迫切需要,开展了对该区域地震数据采集、处理和解释的集中攻关,尤其是针对各种反演方法的研究和对比,期望达到最终目的—即解决储层预测问题。本文认真分析该气田复杂黄土塬处理技术现状,结合实际生产中存在的关键技术问题和技术难题,拟定研究方案。并通过采集、处理、解释一体化的运作思路,研究黄土塬区地震资料各方面的处理解释应用技术,并最终开发出一系列适用于黄土塬资料的处理解释方法,以及建立了适应于黄土塬地区资料的处理和解释流程,形成能够直观反映地层岩性以及厚度变化的波阻抗剖面。地震目标处理最终目的是解决储层预测问题。通过综合分析神木气田上古生界储层地球物理特征,并结合以往勘探开发经验得到以下认识:盆地东部为多层系、薄储层、低渗透岩性气藏,加之储层厚度薄、横向变化大,因而地震预测困难。但是随着地震技术的不断发展,对低渗透油气藏的储层岩性、物性、含气性预测也有了突破性进展。可以通过地震属性分析、吸收衰减、AVO分析和叠前反演预测储层的含气性。神木气田成功钻探表明:针对多层系、薄储层、低渗透油气藏的特点,在地质系统分析及研究的基础上,充分利用地震、测井资料相结合,可以比较精确的预测薄储层岩性、物性及含气性。实践证明,储层预测技术必须建立在正确的地质分析基础之上,把沉积相分析以及测井资料的综合解释融合到地震预测的各个环节之中,才能有效提高储层预测成功率,真正实现少投入多产出的目的。
[Abstract]:According to the present situation and prospect of seismic exploration technology in Shenmu gas field, combined with the urgent need of oil and gas exploration in Changqing Oilfield, this paper has carried out the concentrated research on seismic data acquisition, processing and interpretation in this area. Especially for the research and comparison of various inversion methods, the ultimate goal is to solve the reservoir prediction problem. In this paper, the present situation of the complex loess plateau treatment technology in the gas field is seriously analyzed, and the research scheme is drawn up in combination with the key technical problems and technical problems existing in the actual production. And through the operation idea of the integration of acquisition, processing and interpretation, this paper studies the processing and interpretation technology of seismic data in loess plateau, and finally develops a series of processing and interpretation methods suitable for the data of loess plateau. The processing and interpretation flow of the data adapted to the loess tableland is established to form the wave impedance section which can directly reflect the variation of strata lithology and thickness. The ultimate purpose of seismic target processing is to solve the reservoir prediction problem. By synthetically analyzing the geophysical characteristics of Upper Paleozoic reservoirs in Shenmu gas field, and combining with the previous exploration and development experience, the following conclusions are obtained: the eastern part of the basin is multi-layer series, thin reservoir, low permeability lithologic gas reservoir, and the reservoir thickness is thin, and the lateral change is great. As a result, earthquake prediction is difficult. However, with the development of seismic technology, there is a breakthrough in the prediction of reservoir lithology, physical properties and gas-bearing properties of low permeability reservoirs. Through seismic attribute analysis, absorption attenuation AVO analysis and prestack inversion can be used to predict reservoir gas-bearing. The successful drilling in Shenmu gas field shows that according to the characteristics of multi-layer system, thin reservoir and low permeability reservoir, on the basis of geological system analysis and research, the lithology of thin reservoir can be predicted accurately by fully utilizing seismic and logging data. Physical and gaseous properties. It has been proved that reservoir prediction technology must be based on correct geological analysis and integrate sedimentary facies analysis and logging data into all aspects of seismic prediction in order to effectively improve the success rate of reservoir prediction. Really achieve the goal of less input and more output.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;P631.4

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