南堡油田滩浅海地质特征及三维地震资料采集

发布时间：2018-04-05 23:33

本文选题：采集技术　切入点：地震资料　出处：《东北石油大学》2017年硕士论文

【摘要】：本文以滩浅海某区块为例,研究在该区块施工需要采取的施工设计以达到以下目的:(1)准确落实中浅层低幅度构造,低级序断层及储层分布,落实油藏规模,提高储量动用率,预期落实可动用储量3000万吨,提供建产新目标。(2)为开发产建、早期油藏描述、高效开发奠定基础。(3)搞清中深层油藏的构造特征、优势砂体分布,促进控制、预测储量升级。现有地震成果的资料品质制约着评价、开发工作的进一步深入。评价、开发面临的主要问题有:(1)中浅层以构造油藏为主,同时发育多种类型的油藏。复杂断裂带构造的精细刻画,与储层精细预测是实现探明储量有效动用的核心--目前地震成果资料不能满足低级序断裂刻画、低幅度构造精细落实及单砂体精细刻画的需要。(2)中深层整体表现为构造背景上发育的岩性油气藏,储层变化快。构造的精细落实与优势储层的刻画是实现储量升级评价的重点,目前地震资料不能满足中深层构造精细落实及优势储层预测的需要。(3)深层潜山油藏受构造、地层和储层等多种因素控制。准确落实潜山顶面及内幕构造与储层分布预测是落实储量规模的重点,目前地震资料不能满足潜山顶面及内幕构造与储层准确预测的需要。因此,冀东油田决定在该区采用目前先进的滩浅海地震采集技术,进行新一轮的三维地震勘探,以满足精确刻画断层、准确落实低幅度构造和储层预测的需要。该研究区中浅层,中深层,深层目前地震资料均满足不了精确刻画断层、准确落实低幅度构造和储层预测的需要,基于地质目标设计,面向地质目标的正演模拟技术是根据油田提供的既有地质、地震、钻井和测井等各方面资料,优选地层地球物理参数,根据地质目标需要,建立贴近目标勘探区实际的地层模型,模拟地震响应或者地下地震照明。充分借鉴邻区南堡1号、CFD8-9等最新采集成果。应用国内外最先进OBC采集技术、配套装备和施工工艺,建立起更为合理的观测系统。使用理论论证结果,经过多次试验,最后确定合适参数,并确定最终采集方案,所得到的成果满足了落实低幅度构造和储层预测的需要,项目得以成功完成。从施工前期准备到结束,秉承了理论联系实际,并凭借野外小队本身丰富的施工经验,最终完成任务。
[Abstract]:Taking a certain block in the beach and shallow sea as an example, this paper studies the construction design that needs to be adopted in the construction of this block to achieve the following purposes: 1) to accurately implement the low amplitude structure of middle and shallow layers, the distribution of low order faults and reservoirs, the implementation of reservoir size, and the improvement of reserve production rate.It is expected that 30 million tons of recoverable reserves will be implemented, and a new target of construction and production will be provided. This will be the foundation for development and construction, early reservoir description and efficient development.) the structural characteristics, distribution of dominant sand bodies, promotion of control and prediction of reserves upgrading will be clarified.The quality of existing seismic data restricts the evaluation and further development.In evaluation, the main problems in development are: (1) the middle and shallow layers are mainly structural reservoirs, and many types of reservoirs are developed at the same time.Fine characterization of complex fault zone structures and fine reservoir prediction are the core of effective production of proven reserves.The need for fine implementation of low amplitude structure and fine characterization of single sand body is that the whole middle and deep layers are lithologic reservoirs developed in the tectonic background, and the reservoir changes rapidly.The fine implementation of the structure and the characterization of the superior reservoir are the key points to realize the evaluation of reserves upgrading. At present, the seismic data can not meet the needs of fine implementation of the medium-deep structure and prediction of the dominant reservoir.Strata and reservoirs are controlled by a variety of factors.Accurate prediction of buried hill roof and inside structure and reservoir distribution is the key point of carrying out reserve scale. At present seismic data can not meet the need of accurate prediction of buried hill roof and inside structure and reservoir.Therefore, Jidong Oilfield has decided to adopt the advanced seismic acquisition technology of beach and shallow sea in this area to carry out a new round of 3D seismic exploration to meet the needs of accurately characterizing faults and accurately implementing low-amplitude structures and reservoir prediction.The present seismic data of middle, shallow, middle and deep layers in the study area can not meet the needs of accurately characterizing faults and accurately implementing the prediction of low amplitude structures and reservoirs, and are based on the design of geological objectives.The forward modeling technology for geological targets is based on the existing geological, seismic, drilling and logging data provided by oil fields, which can select formation geophysical parameters and meet the needs of geological objectives.An actual stratigraphic model close to the target exploration area is established to simulate seismic response or underground seismic lighting.Draw lessons from the latest collection results of Nanbao No.1 CFD8-9 in neighboring area.A more reasonable observation system has been established by using the most advanced OBC acquisition technology, supporting equipment and construction technology at home and abroad.Using the results of theoretical demonstration, after many experiments, the appropriate parameters are determined and the final acquisition scheme is determined. The results obtained meet the needs of implementing low-amplitude structure and reservoir prediction, and the project is successfully completed.From the early preparation to the end of the construction, the theory is combined with practice, and with the abundant construction experience of the field team, the task is finally completed.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13;P631.4

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