共查询到19条相似文献，搜索用时 156 毫秒
1.
ZhouJinming 《应用地球物理》2004,1(2):95-102
Nowadays, it becomes very urgent to find remain oil under the oil shortage worldwide.However, most of simple reservoirs have been discovered and those undiscovered are mostly complex structural, stratigraphic and lithologic ones. Summarized in this paper is the integrated seismic processing/interpretation technique established on the basis of pre-stack AVO processing and interpretation.Information feedbacks occurred between the pre-stack and post-stack processes so as to improve the accuracy in utilization of data and avoid pitfalls in seismic attributes. Through the integration of seismic data with geologic data, parameters that were most essential to describing hydrocarbon characteristics were determined and comprehensively appraised, and regularities of reservoir generation and distribution were described so as to accurately appraise reservoirs, delineate favorite traps and pinpoint wells. 相似文献
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LiangShengzheng 《应用地球物理》2003,6(1):70-77
The petroleum geophysical and geological comprehensive interpretation with whole-information of gravitational, magnetic, electrical and seismic methods has played an important role in the exploration and development of the buried-hill oil and gas pools in the Jizhong area, including the oil pools in the weathering surface of the buried-hill with “oil generated in the Cenozoic and accumulated in thePaleozoic”, and the gas pools in the buried-hill with “oil generated in both the Cenozoic and the Paleozoic, accumulated in the Paleozoic and sealed by the Mesozoic”. In recent years,high-precision gravitational and magnetic surveying and continuous electromagnetic profile (CEMP) prospecting were carried out on the Yangcun Slope that had been preliminarily recognized as a monocline in the Paleozoic structural-stratigraphy. After the geophysical and geological comprehensive interpretation with whole-information of gravitational,magnetic, electric and seismic data, the gas-bearing buriedhill zone of Matou-Huanghuadian was discovered. 相似文献
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This paper summarizes a set of interpretation technologies for Mesozoic sandstone reservoir prediction in the Longdong loess plateau, such as seismic sequence processing and interpretation based on generalized S transform, the eroded paleo-geomorphology interpretation of the top of the Triassic and a variety of lateral reservoir predictions. The effects of employing these technologies are compared and analyzed, as well. The research results show that seismic sequence processing interpretation technology based on generalized S transform can distinguish 3ms (about the thickness of 6 m)sequence interface. Consequently the technology can ascertain the distribution of a sand body of the formation Ch 8 and expand the exploration area of the Xifeng oil field in the Longdong area. 相似文献
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SongJingming RanXuefeng HaoHongjiang 《应用地球物理》2003,6(1):67-69
Addressed in this paper was the comprehensive interpretation of all kinds of data and its applications in oil/gas exploration. Real examples were used to illustrate the importance of the comprehensive interpretation of gravity/magnetic/electric/seismic data as well as the results. 相似文献
6.
多尺度形态学在地震去噪中的应用 总被引：3，自引：0，他引：3
In this paper, multi-scaled morphology is introduced into the digital processing domain for land seismic data. First, we describe the basic theory of multi-scaled morphology image decomposition of exploration seismic waves; second, we illustrate how to use multi-scaled morphology for seismic data processing using two real examples. The first example demonstrates suppressing the surface waves in pre-stack seismic records using multi-scaled morphology decomposition and reconstitution and the other example demonstrates filtering different interference waves on the seismic record. Multi-scaled morphology filtering separates signal from noise by the detailed differences of the wave shapes. The successful applications suggest that multi-scaled morphology has a promising application in seismic data processing. 相似文献
7.
Study and Practice of Wide-Angle Seismic Data Processing 总被引：1，自引：0，他引：1
ZhangWenpo GuoPing HuTianyue 《应用地球物理》2004,1(1):31-37
This paper presents the special processing methods used for wide-angle land seismic data through both theoretical study and model testing. They are different from conventional ones in the following aspects: separation of reflection and refraction waves, long offset NMO and stacking and forward modeling and inversion. These processing techniques have been applied for the first time to land seismic data from Liaohe areas, resulting in greatly improved quality of the deep formation and better imaging of the shallow layer obtained in the volcanic-shielded area. Wide-angle reflection and refraction seismic surveys were carried out in the Liaohe area using the maximum offset of 6500m and with the target around 2000ms. In the processing, we adopted the τ-p transform and the high-order normal moveout correction. 相似文献
8.
HaoHongjian WangCaifu LiuYunxiang WeiYan LinCunguo 《应用地球物理》2003,6(1):87-91
Experience gained in many years proved that oil explorations were very difficult to complete with seismic methods only in seismic-unfeasible areas. The expected results in these places could only be obtained with the integrated geophysical surveys, the combination of gravity, electric, magnetic,geochemistry and seismic methods. The high-precision gravity,magnetic and electric techniques used in seismic-unfeasible areas in Qaidam Basin had achieved many astonishing results,which demonstrated a feasible way for oil exploration in Qaidam Basin and offered a basis for data interpretation in complex areas where seismic data was not able to acquire. 相似文献
9.
PengSuping YangFeng 《应用地球物理》2004,1(2):89-94
Geological radar probing technology finds wide application in engineering projects.The high-precision characteristics of geologic radar should be studied in connection with fine processing and interpretation. This article discusses such issues as ( 1 ) geologic radar noise source and (2) fine processing and interpretation of radar data. It is foct~sed on bow to achieve fine processing and interpretation. 相似文献
10.
LiuHong HeZhangxiang UuDongqin SunWeibin 《应用地球物理》2003,6(1):35-40
The utilization of MT and CEMP methods has been extended from plains to mountainous areas. The rugged topography not only brings about difficulties in field electro-magnetic measurements but also affects data processing, interpretation and results. Analyzed in this paper were the 2D and 3D forward modeling of the fluctuated topography and the real examples to discuss the topographic effects on electric data and the practical methods to avoid these effects. 相似文献
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Hidemi M. Ito Akihiko Wakayama Mitsuyuki Hoshiba De-Yi Feng Ming-Zhou Lin 《地震学报(英文版)》1993,6(4):813-821
We have developed a workstation-assisted information processing system. The system has three major functions: information
retrieval from seismic data, detection of earthquake precursors, and graphical display of relevant results. Fuzziness is inevitably
involved in these functions, an adequate treatment of which is vital. The system accepts instructions given by a successive
choice of words in hierarchal structure, which is followed by a tune-up of the corresponding membership function. The degrees
of fuzziness in the outputs are recognized visually, for example, by coloring. This contrivance together with dynamic data
exchange among the above functions facilitates the operation of the system.
The Chinese version of this paper appeared in the Chinese edition ofActa Seismologica Sinica,15, 399–406, 1993.
This study is partly supported by a project “Fuzzy systems and their applications to human and natural sciences” of Science
and Technology Agency. 相似文献
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The Numerical Modeling of 3-D Elastic Wave Equation Using a High-Order,Staggered-Grid, Finite Difference Scheme 总被引：1，自引：0，他引：1
XiaFan DongLiangguo MaZaitian 《应用地球物理》2004,1(1):38-41
This article provides the application of the high-order, staggered-grid, finite-difference scheme to model elastic wave propagation in 3-D isotropic media. Here, we use second-order, temporal-and high-order spatial finite-difference formulations with a staggered grid for discretization of the 3-D elastic wave equations of motion. The set of absorbing boundary conditions based on paraxial approximations of 3-D elastic wave equations are applied to the numerical boundaries. The trial resuits for the salt model show that the numerical dispersion is decreased to a minimum extent, the accuracy high and diffracted waves abundant. It also shows that this method can be used for modeling wave propagation in complex media with the lateral variation of velocity. 相似文献
15.
利用随机过程的谱展开理论以及Hudson等人的裂纹介质模型构造一种裂纹数密度是空间平稳随机过程的随机介质模型。这个模型可以将裂纹的微观参数(裂纹数密度)与裂纹介质的宏观性质(弹性常数)联系起来,能灵活、有效地描述实际非均匀裂纹介质。模型算例表明,弹性常数的空问分布特征与裂纹数密度的有差别,而且对不同的弹性常数影响不同。通过改编自相关长度的大小,可以模拟裂缝在两个坐标轴方向上具有不同分布尺度的情况。最后,利用高阶的交错网格有限差分方法,我们模拟了地震波在具有随机分布裂缝岩石中的传播特征。 相似文献
16.
洪泽地区由于沉积的特点，储层横向变化快，油藏受构造、岩性、油源多因素控制。在对该区三维AVO属性体解释中，利用多元回归方法求取了横波曲线，分岩性和含油气性统计了纵、横波、泊松比参数分布规律，建立了本区的含油砂岩的正演模型，从而降低了AVO解释的多解性。通过井-震结合对四种AVO属性数据体进行了标定，并确定了各属性体应用范围，进而进行了储层和含油气检测。实践表明，该方法能有效地利用AVO属性数据体进行储层预测及油气检测，具有一定的推广价值。 相似文献
17.
陕北富县地区以前的地震勘探沿沟布设弯曲测 线,平面展布呈不规则树枝状,难以形成闭合回 路,很难对二维地震资料在平面上进行储层反 演。2001年在陕北富县探区进行野外采集方法和 地震处理技术攻关,通过采用极其灵活的可变线 元观测系统实现直测线过塬,使测线成网连片; 资料处理中采用基于模型反演的折射波静校正、 地表一致性振幅补偿和反褶积、叠前噪音衰减等 技术,为后续的储层预测、低幅度构造解释和综 合地质研究提供了高保真的地震资料;由于测线 的连片成网,通过伪测井的方法对无井测线进行 控制,最终实现储层反演的连片解释。 相似文献
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在地震勘探领域,尤其是海洋地震勘探中,多次波一直是影响地震处理与解释的主要因素之一.本文基于x-t域的反馈模型及多次波衰减的理论,详尽推导了x-t域反数据处理的方法;基于平面波域多次波的产生机制,借鉴x-t域反数据处理的方法,推导出在平面波域进行反数据处理的原理.文中给出一个有限差分的模拟数据进行测试,处理结果表明,本方法可以有效地衰减表层相关多次波,提高地震数据分析的精确性,在保护了一次波能量的同时,可以更加有效快捷地去除多次波. 相似文献
19.
The effect of water compressibility on the seismic responses of arch dams is not well understood. In this paper, a numerical model is developed with rigorous representation of the dynamic interaction between arch dam-water-rock foundation. The model is applied to the seismic response a nalysis of an arch dam with a height of 292m designed to aseismic intensity of IX. It is shown that consideration of the water compressibility clearly decreases the stress responses at key positions of the dam, while the added mass model gives a conservative estimate. 相似文献