敖南油田Q区块精细构造解释

发布时间：2018-04-20 15:09

  本文选题：精细构造解释 + 相干体技术　； 参考：《东北石油大学》2017年硕士论文

【摘要】：敖南油田Q区块是水平井开发区,水平井在钻井过程中对储层埋深在横向上的变化要求精度十分高,构造解释精度直接关系到储层反演及地质建模的精度,因此会影响到水平井成功率,影响到对构造特征分析的准确程度。针对研究区对构造解释精度的特殊要求,论文对研究区进行精细构造解释,加强对该区的构造特征的认识。本文在认真分析和借鉴前人研究成果的基础上,充分利用地震、测井和钻井资料,对敖南油田Q区块展开了深入细致的研究,对该区的葡一组油层组进行了精细解释,重点解释葡一组顶界面(P32)与底界面(P52)及其断裂研究,同时解释了P11、P22、P42共五个小层,对全区地震层位解释和断层解释,解释测网密度为1x1。在解释过程中,先后进行地震地质层位标定,断层解释。针对研究区断层发育、研究单元地震分辨率低,井震矛盾突出、小层刻画难,应用水平切片解释技术、相干体时间切片解释技术对平面断层进行解释。采用剖面纵向放大技术对剖面断层进行解释。最终得出敖Q区块的P11、P22、P32、P42、P52小层等值线间隔为5m的构造图,开展葡一组顶界面(P32)与底界面(P52)微幅度构造、小断层研究,搞清主要目的层局部构造的空间展布情况,搞清断层平面及空间展布情况。共解释断层31条,分析得出了断层倾向、一般长度、断层断距等数据。并且对敖南油田Q区块的构造形态的认识也发生了较大的变化,得出研究区断块整体构造形态为一北西倾的单斜,发现构造高点位N2560312井区,高点埋深-1155m,以及研究区北部葡一组顶面(P32)埋深-1200米左右。通过本次精细构造解释,使整个研究区深度目标更加可靠,提供准确的构造和垂深,对敖南油田Q区块的构造特征进行准确的分析,为水平井设计奠定基础。
[Abstract]:Q block in Aonan Oilfield is a horizontal well development zone, which requires high accuracy in horizontal variation of reservoir depth during drilling. The accuracy of structural interpretation is directly related to the accuracy of reservoir inversion and geological modeling. Therefore, it will affect the success rate of horizontal wells and the accuracy of structural characteristics analysis. In view of the special requirements of structural interpretation accuracy in the study area, the paper makes fine structural interpretation of the study area and strengthens the understanding of the structural characteristics of the study area. On the basis of careful analysis and reference of previous research results, this paper makes full use of seismic, logging and drilling data to carry out a thorough and meticulous study of Q block in Aonan Oilfield, and makes a fine interpretation of the Puyi formation in this area. Emphasis is placed on the interpretation of the top interface P32) and the bottom interface P52) and their faults. At the same time, the paper explains that there are five sublayers P11, P22 and P42, and that the density of the interpretation network is 1 x 1 for seismic horizon interpretation and fault interpretation in the whole area. In the process of interpretation, seismic geological horizon calibration and fault interpretation have been carried out successively. In view of the fault development in the study area, the seismic resolution of the research unit is low, the conflict between well and earthquake is prominent, and it is difficult to depict the small layer, the horizontal slice interpretation technique and the coherent volume time slice interpretation technique are used to interpret the plane fault. The longitudinal amplification technique is used to interpret the fault. Finally, the structural map of the P11P2P2P32P42P52 sublayer with a interval of 5m in AoQ block is obtained, and the micro amplitude structure and small fault of the top and bottom interfaces of the first group of Portugal are carried out to find out the spatial distribution of the local structures of the main target layers. To find out the distribution of fault plane and space. The data of fault inclination, general length and fault fault distance are obtained. Moreover, the understanding of the structural form of Q block in Aonan Oilfield has also changed greatly. It is concluded that the overall structural form of the fault block in the study area is a north-west dip monoclinal, and the well area N2560312 is found to have a high structural point. The buried depth of the high point is -1155 m, and that of the top surface of a group of Portugal in the northern part of the study area is about -1200 m. Through this fine structure interpretation, the depth target of the whole study area is more reliable, and the accurate structure and vertical depth are provided. The structural characteristics of Q block in Aonan Oilfield are analyzed accurately, which lays a foundation for horizontal well design.
【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;TE243
，

本文编号：1778282