第十八届年会学术论文英文摘要
(Conveners: Yu Sheng Zhou Huilan Zang Shaoxian)
第一专题：地球物理学科的发展前景及研究前沿
(负责人：于晟 周蕙兰 臧绍先)
Study
On Remote Exploration Acoustic Reflection Well Logging
Xue Mei Chu Zehan Bian Huanling
Abstract
It is difficult for traditional well
logging methods and devices to detect fractures and geological abnormal objects
far from boreholes. This paper resolves the problem by introducing methods of
reflected waves into the area of acoustic well logging, and brings forward
Remote Exploration Acoustic Reflection Well Logging, whose exploration depth
could reach 10m to 15m by recording the reflected waves. On the basis of the
author’s former study, this paper studies how the super long source distances
and low source frequencies influence the wave train received in the borehole,
how the sampling time and source distance influence the exploration depth, and
how source distance and the distance between interfaces and wells influence the
sliding waves and reflected waves, to give directions in selecting source
distances, source frequencies, sampling time and incident angles which are
benefit to fire reflected waves in developing the new well logging device. This
paper also calculates the acoustic fields fired by the sondes designed in this
paper, which confirms that the parameters selected for the sondes are
reasonable.
Key words: Acoustic well logging, Exploration
depth，Reflected wave, Super long source distance, source
frequency.
（远探测声波反射波测井方法研究
薛梅）
Studies of
Remote Exploration Acoutics Reflection Well Logging
Huanling Bian
Zehan Chu et.al
University of
Petroleum(Beijing)
Using
the method of geometrical acoustics carried out the studies of Remote
Exploration Acoutics Reflection Well Logging (RAR).
Based
on the factors which influence the distribution of energy and the transit route
of reflection on the reflecting plane, model the physical model of RAR. By
analyze the borehole and the cased borehole the relation between the angle of
incidence, lithology, space of fractures, angle of fractures，the frequency and receiving signal and
the relation between the source distance and time of transit are gained.
By
the contrast of the signal energy between reflected events calculated by the
geometrical acoustics and the sliding waves of Long Source Distance Logging, and
two experiments, testify the
calculated result.
（远探测声波反射波测井方法研究 边环玲）
Discussion on the Metallogenesis of the Super Large Scale Base Metal
Ore Deposits and its Relation with Mantle Depression
Cao
Xiaoguang
(Yunnan
Non-ferrous Metals Geological Bureau, Kunming, 650051)
This paper is mainly focused on the following four points: 1.
The paper outlined the mantle depression is formed during the younger orogenic
movements; 2. Theoretically, one of the formation genesis of the mantle
depression is that where the mantle depression developed is in a geophysical
and geochemical interface which lead to the marginal mineralization
effect, further more, the metal
atom energy in this interface is
much more larger than that in the interior, it expressed by 4 highs(high
energy, high surface energy, high stress and high activity), and more
mineralization concentrating on the
mantle slope zone; 3. Globally, the large base metals ore deposits
mainly occurring in the mantle slope zone with less than 2 degree of slope
angle, where is the targeting area for future prospecting, 2—20 Km from the
center of mantle depression. 4. There are many mantle depression in Moho discontinuity scattered across China, it should pay more attention to
this mantle depression in the future prospecting
（幔坳与超大型有色贵金属矿床位置及成因探讨 曹显光）
(Nanjing Geophysical Research
Instituteg,, Sinopec,
21 Weigang, Nanjing, 210014,
China)
It
is an important task to pay attention to the economical benefit and reduce the
exploration risk. As the rising of the exploration level and the object of the
exploration become more and more complex, the cost of the exploration is increased
more and more. After entering the WTO, the direction of the development in
China is internationalize in the management, diversify in fusion funds channels
and standardize in funds operation. So, many oil companies pay more attention
to the action of the economic evaluation in exploration geophysics.
From the appearance of the oil and gas exploration, there are three aspects in
the economic evaluation: prospects evaluation in exploration area, the
evaluation in the seismic acquisition, the evaluation in the processing and
interpretation.
（经济评价在勘探地球物理中的作用 王青）
Brief
introduction about the cost management for the oil and gas exploration
(Nanjing Geophysical Research
Instituteg,, Sinopec, 21 Weigang, Nanjing, 210014, China)
After
entering the WTO, the enterprise of the oil and gas prospecting will face sharp
market competition. Whether the more market portion can be occupied in the
international commercial war, it depends on the production cost. Some ideas are
put on in this paper about the importance in cost management, some problems in
cost management, and how to manage the production cost.
（浅谈对油气勘探成本的管理 王青 陆永宏 吕敏）
Geophysical Exploration for Oil-gas and Coal Field
(Conveners:
Niu Yuquan Niu Binhua Liu Yang)
第二专题：油气田与煤田地球物理勘探
(负责人：牛毓荃 牛滨华 刘洋)
A
robust method for resolving converted-wave statics automatically
Xiulian Zhao Shiyong Xu et.al
(Tongji University, Shanghai, 200092)
Most conventional P-wave residual-statics algorithms could be used to
process converted waves in principle. However, because of the much larger
residual statics which often produce numerous cycle skips, the asymmetry of
raypaths which need CCP binning instead of CMP binning, these conventional
algorithms often fail to produce good results on converted data. Moreover, the
P-wave and S-wave static solutions are largely unrelated to each other on the
same positions, so it is generally not feasible to approximate the S-wave
statics by simply scaling the known P-wave static values. In order to solve
this problem properly, Cary (1993) presented a robust method for obtaining an
initial estimate of large, short-wavelength receiver statics by optimizing the
trace-to trace coherence of the common-receiver-point(CRP) stack. The solutions
are more robust because this method can guarantee the global maximum of the
total power of the laterally averaged CRP stack. This paper will give a
practice and an application for this method.
（一种稳健的转换波自动剩余静校正方法 赵秀莲
许士勇 马在田）
Static
Correction of Converted Waves using Windowed CRP Gather
Peng Suping , Wang Hui
(China University of Mining & Technology(Beijing Campus)
Abstract:
Static correction is difficult for converted waves
processing. Because there is no clear first-breaks on field converted wave
records. So the static value cannot be gotten by traditional refraction static
methods. According to the mechanism of converted waves generation, source
static can be resolved by P-waves using traditional static methods, and
receiver static values can be obtained by windowed common-receiver-point (CRP)
gathers. Pick the reflection events of stacked profile of converted waves
without receiver static correction. Take the picked time as a median of a time
window and pick up seismic data within the selected window on
common-conversion-point (CCP) gather after NMO. Re-sort it into CRP gathers and
then apply CRP stack. Pick the events of stacked CRP profile and the difference
between the picked events and median can be taken as the static value of each
receiver. It has a good effect in converted waves processing.
（用共检波点时窗道集做转换波静校正 作者姓名：彭苏萍
王辉）
The
applying study of non-linear inversion technology in shallow strata
Zhang
Shaohong Wu Shiguo
(Institute
of Oceanology, Chinese Academy of Sciences，Qingdao，266071)
We
applies simulated annealing algorithm in neural network to inverse the physical
property in shallow coalbed.Through the temperature control of simulated
annealing to do scale transform of the objective function so as to get a global
optimization.We also combine conjugate gradient to move faster to the bottom of
the valley so as to accelerate the convergence.
（非线性反演技术在浅层地震资料中的应用研究 张绍红 吴时国）
The research of the reflection
characteristics on subsalt reflectors by ray-tracing modeling and prestack
depth migration
Chen Aiping 、Liu
Tianyou 、Gu Hanming 、Qi lixin 、Hu pengfei and Wang Jianbin
(Department of Geophysics, China University of
Geosciences, Wuhan, 430074, China)
The
characteristics of reflection on subsalt reflectors have been researched by
ray-tracing modeling and prestack depth migration（PreSDM）in
this paper. Some typical salt shapes have been built. The common reflecting
point gathers and raypath maps can been obtained by ray-tracing modeling. The
data of CRP gathers has been handled by PreSDM. The analyses of results show
that salt can not only produce the distortion of characters of kinetics on subsalt
reflectors, but also affect the characters of dynamics on subsalt reflectors.
Especially, the salt varies the AVO characters on subsalt reflectors. The edges
of salt bodies cause severe disruptions and reduce the fold number. But, the
common-shot migration can realize true-amplitude imaging. The error between the
actual AVO curves from the data handled by PreSDM and the theoretical AVO
curves calculated basing on model parameters decreased 21% on the bellow
salt-edge.
Application of Well Logging Techniques
in Carbonate Reservoirs of Tahe Oil Field and Discussion about Some Problems
Wu Yueqi Liu Jianhua Ma Yong
(The Academy of Eng.
and Tech., West Corporation of CNSPS,Urumqi,830011 )
Abstract：
The heterogeneity of Ordovician carbonate
reservoir in Tahe oil field makes log interpretation results has much more ambiguity.
So it needs successive innovation and improvement in log data acquisition and
interpretation. In this paper, we describes some research achievements and
application effects in reservoir studies such as geology, log response, log
methods, interpretation techniques and reservoir identifying methods. In
addition ,in the course of using imaging log, conventional log and core data
demarcating ,we also presents some urgent problems must be further studied in
identifying carbonate reservoir, type-determining of formation fluid and
comparing of reservoir formations.
Key words: carbonate
reservoir logging method interpretation method reservoir
identification
（测井技术在塔河油田碳酸盐岩的应用与问题分析 仵岳奇 柳建华 马勇）
The
physical meaning of AVO reduced equations and its appliance in the oil
exploration
Cheng Bingjie
Zhang Yufen
Xu Tianji
(China University of Geosciences Wuhan 430074) (China University of
Geosciences Beijing 100083)
Abstract The Amplitude Versus Offset(AVO) analysis is that the wave
reflection coefficient varies with the incident angle. This method has been widely
and successfully applied in the oil and gas geophysics explorations. Its
theoretic foundation is the actual Zoeppritz equation, but this function
expression is too complicated to find out the relationship between the
reflection coefficient and the elastic parameters. So with the use of the
actual Zoeppritz equation of wave reflection coefficient , a series of reduced
Zoeppritz equation (derived from Aki and Richards (1980)、Shuey(1985)、Hilterman)
which are widely used in present seismic exploration are derived in the document. A various of mono-layer and
multi-layer parametric models are designed, then AVO forward modeling for P—wave
of these models is made by using the For77 program. The changing law of AVO
curve is analyzed based on the single layer models, and mainly including how
the variation of medium Poisson ratio and the wave impendence affect the
relationship of the amplitude and the offset. According to the seismic
recording, I discuss the difference of Shuey equation and Hilterman equation,
and explain how the three items of the equation make contributions to the
seismic reflection recording for the different incident angles.
AVO简化方程的物理意义及其在油气识别中的应用
程冰洁 张玉芬 徐天吉
（中国地质大学 武汉 430074） (中国地质大学 北京 100083)
The
application of 3-D seismic visualizing interpretation in oil exploration and
development
Chen Hui Sun
Hao et.al.
Geophysical Research Institute
of Tuha Petroleum Exploration & Development Corporation
3-D visualizing interpretation
is intuitionistic, effective and accurate in seismic data interpreting. The
paper firstly introduced the basic theory of 3-D visualizing interpretation,
which including transforming the seismic volume into voxbody, scanning and
focusing voxbody and adjusting transparence. At the same time, the author point
out that not only the skills of using interpreting software, but also the
abundant knowledges in geology, geophysics and experiences are essential. Then
described the method and work flow of 3-D visualizing interpretation. At the end, two practical examples both
in micro-fault identifying and sandbody predicting are presented.
（三维地震可视化解释在油田勘探开发中的应用 陈辉 孙皓 朱有信 李志军）
Modelling study of magnetic effect of hydrocarbon
microseepage
above oil & gas reservoirs
Haixia Li et al.,
(Department of Geophysics, CUG,
Wuhan 430074)
Magnetic forward models of the Yakela oil field, northern
Tarim basin and Jingbian gas field, Ordos
Basin were generated to assess the possibility that magnetic minerals
related with hydrocarbon microseepage in near-surface soils contributes to
magnetic anomalies.
Amplitudes of magnetic anomalies are about 1nT at 100m
altitude and more than 4nT at 2m altitude. Such amplitudes lower than those
(approximate 10nT) reported from the total field survey over the Yakela field,
but are close to the residual magnetic anomalies (approximate 1nT). While calculated
intensities of magnetic field over Jingbian gas field for altitude are 100m, 2m,
corresponding to about 1nT and 7nT, respectively.
（油气藏上方近地表微烃渗漏磁效应模拟研究 李海侠）
The application
of GPR and One meter geotheomery on fire fighting in coal field
Tang Qingbing
Li Daxin Qiang Jianke Huangwei Yu Hailong
(Department of Geophysics, China University of Geosciences,
Wuhan 430074 China)
Abstract:
In this paper, the determination of the mined
region and area on fire in
Zhangling coal field, Jincheng city, Shanxi province, is discussed.
Through the description and analysis of the geologic structure characteristic
of the region, georadar characteristic of the mined region and the geothermal
field distribution of the area on fire, synthesizing drilling, bore hole temperature
measurements and the relational gas testing, we demonstrate the effect of the
synthetic method of georadar and one meter geothermomery in the determination
of mined region and area on fire in coal field. As a conclusion, we discuss
their application prospect.
key words: mined region; igniting source exploration;
fire area determination; georadar; one meter geothermomery.
（地质雷达与米测温方法在煤田防灭火中的应用 唐庆兵）
Prediction and Description of Oil and Gas Reservoir
(Conveners:
Mu Yongguang Chen Xiaohong)
第三专题：油气储层预测和描述
(负责人：牟永光 陈小宏)
The Pre-stack
Multi-blocks Processing Technique of 3D Seismic Data and its Application
effects
YANG Bin, YANG Wen-bin
GEOPHYSICAL RESEARCH INSTITUTE OF TUHA PETROLEUM
EXPLORATION& DEVELOPMENT CORPORATION
The multi-blocks processing technique of 3D seismic data can eliminate the
effects of bordlines and the problems of joints .The key techniques include the
uniform definition of observation systems, the refraction statics, the plastic
processing techniques of wavelets, the unity processing of surface and the
adjusting of cells. The 3D data-bodies resulted from the multi-blocks processing
have characters of integrity, clear correlation and oneness. Using these kinds
of data, interpreters can identify more accurately the complicated structures
such as little faults and high-steep angel faults among the blocks and in particular
the joints. Now they have found several traps which contain oil or gas among
the joints of the multi-blocks. The effects of application of multi-blocks processing
technique are proved to be good and effective.
（三维地震资料叠前连片处理技术及应用效果 杨斌 杨文斌）
Recognition
about Biot’s Theory (Ⅰ)
Yu wenhui Zhang liqin
et.al
The Department of Geophysics, China University of
Geosciences, Wuhan 430074
Since
Biot(1957) had represented a report about the elastic wave propagation in two-phases
medium, the theory have been studied widely and deeply. The medium that Biot
studied is surface soil, it is insufficient to apply the Biot’s theory to wave
propagation in underground rocks. First, Biot’s theory hypothesize that porous
fluid is static. Analytical results show that static porous fluid doesn’t
appear Darcy movement under the stress caused by wave propagation in rocks.
Second, there is an essence differentiation between the pressure of porous
fluid in rocks and in surface soil. There has a residual pressure between these
two pressures. In fact, the pressure of porous fluid is normal pressure
according to Biot’s theory. Third, Darcy law shows if pressure gradient is
zero, permeation movement doesn’t occur in porous medium in spite of the
pressure’s magnitude of porous fluid. In these regions, such as developing
regions of oil field, porous fluid is non-static due to diffusion of porous
pressure in rocks. The effect should be taken into account when studying the
wave propagation in these regions. Non-Darcy movement must be considered in
non-diffusion case of porous fluid, i.e., relative static case of porous fluid.
According to the above, we deduce displacement-movement
equation of the wave propagation in heteropic medium composed of two components.
（对Biot理论的重新思考和认识(Ⅰ) 於文辉）
Recognition
about Biot’s Theory (Ⅱ)
Zhang liqin
Yu wenhui et.al.
The Department of Geophysics, China University of
Geosciences, Wuhan 430074
Predecessor have been studying comprehensively the
effects of these factors, such as viscosity resistance, clay content, physical
properties of reservoir and fluid-solid coupling et.al., on elastic wave
propagation. The results show that these factors influence on not only the
amplitude and phase but also the velocity of elastic wave. As we know, elastic
wave is mechanical wave propagated recur to particle vibration in solid medium
and stress diffusing in fluid medium. Mechanical essence of these factors is to
holdback stress diffusing of porous fluid. Therefore, we regard these factors
as an equivalent effect, i.e., contra diffusion force. Elastic wave propagation
in multiphase medium is that elastic wave overcome contra diffusion force
without attenuation with distance and spherical spreading.
During the oil exploding, porous fluid doesn’t occur
Darcy permeation movement under the stress caused by wave propagation due to
relative static state of porous fluid in oil-bearing reservoir. Holtz and
Broms’ researches show that permeation of the clay is non-linear if initial
stress gradient is less than a critical value in stratum.
According to the above, we deduce displacement-movement
equation of the wave propagation in the heteropical medium composed of two
components during the exploding stage using the first order approximation of
the Holtz and Broms’ relation.
（对Biot理论的重新思考和认识(Ⅱ) 张丽琴）
（同态处理与谱域加权相似法在模式波频散提取中的应用 曹正良 王克协）
Employing
Homomorphic Processing and Weighted Spectral Semblance for Mode Wave
Dispersions
Cao Zhengliang, and Wang Kexie
(Physics Science
institute of Jilin University，Changchun，130023)
We
have analyzed two processing method, homomorphic processing and weighted
spectral semblance, for mode wave dispersions. Weighted spectral semblance is
effective processing method for velocity of mode wave, but not for attenuation.
The meaning of weighted is smoothing the dispersion curve with discrete
velocity values at discrete frequencies, and weighted spectral semblance is a
simple calculating method of homomorphic processing for mode wave dispersions.
Examples of two processing methods applied to synthetic waveforms and field
data of monopole and dipole illustrate the consistent results of mode wave
dispersions. By the attenuation at every frequency from homomorphic processing,
we may select reasonable results of mode wave dispersions.
Low frequency
analysis of the acousto-electric waves and reflection/ transmission between
fluid/brine saturated porous media interface
Cui.Zhi-Wen1, Hu.Heng-Shan2 And Wang.Ke-Xie1
1.
College of Physics, Jiin University,
130023, China
2.
Harbin Institute of Technical University,
150006,China
This paper describes a study on the reflection and
transmission of harmonic plane waves at a single interface between inviscid
fluid and brine saturated porous media. For an incident homogenous elastic
wave, the reflected elastic wave is of the same type, while reflected EM wave
and transmission-coupled waves are generalized inhomogeneous waves those
equiphase planes do not coincide with equiamplitude planes, the later run
parallel with the interface. The energy loss in brine saturated porous media is
due to viscosity shear dissipation and electrokinetic dissipation otherwise
from the viscoelastic solid. The low frequency analytical transfer functions
show that only slow wave’s concomitant the electric field is sensitive to
permeability. Reflection and transmission coefficients are obtained. The
variations of these coefficients with the incident angle and frequency have
been shown graphically. The calculation shows that energy exchange between
acoustic and electromagnetic is sensitive to porosity, permeability, tortuosity
of porous medium and properties of porous fluid including the salt
concentration, and electrical permittivity. The effect of slow compressional
wave is important and cannot neglect in R/T coefficients of acousto-electric waves.
（声电平面波低频分析和在流体与孔隙介质界面上的折反射 崔志文1 胡恒山2 王克协1）
GEOSTATISTICAL APPLICABILITY
IN SEISMIC INVERSION
CHENGYUAN ZHANG,
DAOYING XI, XIAOYAN LIU
(Dept. of Earth & Space Science, University of
Sci.&Tech. of China, HeFei, 230026, China)
ABSTRACT: Geostatistician
attempted to combine krigings tightly with seismic prospecting methods. The map
and volumes derived in this way can help engineers identify potential
development drilling targets. An effective integrated method is to construct
kriging constrain on acoustic impedance inversion which is basic tool in
reservoir characterization. Through analysis on log data, we discuss what
geostatistical applicability depends on and how to avoid negative factors. When
sampling is really sparse it is hard to calculate theoretical variogram. In
fact, current geostatistical practice in selecting a variogram model is often
rather subjective. The necessity to use geostatitics carefully is shown with
positive and negative cases.
（地质统计学方法在地震反演中的适用性 张程远 席道瑛 刘小燕）
Analysis of Waveforms of The Electric Field Accompanying The
Acoustic Waves in The Porous Formation outside A Borehole
HU
Hengshan, LIU Jiaqi
(Harbin
Institute of Technology, Harbin, 150001)
Wang
Kexie.
(Department
of Physics, Jilin University, Changchun, 433123)
The acoustically
induced electric field in a porous formation during acousto-electric well
logging is calculated. There are component waves with acoustic velocities in
the full waveforms of the axial and radial components of the electric field.
These waves travel along the borehole. They are different from conventional
uniform plane wave. To explain the properties of such electric field, we
analyze the composing factors. The electric field in the formation are
contributed by the fast and slow compressional, shear, and electromagnetic
potentials. And each potential function is multiplied a coefficient determined
by the boundary conditions. For a given potential function，real axis integration（RAI）method
is used to compute the waveforms. As a check branchcut integral is carried out to calculate to the
critically refracted waves. It is
seen that the wave velocities are determined by the poles and branch points in
the coefficients, not by the potential function itself. The boundary condition
make all of the four kinds of potentials coupled to each other. The slow
compressional potential, for exmaple, can not be omitted in the calculation of
waves with shear and fast compressional velocities.
（声波诱导的井外伴随电场的波形分析 胡恒山，刘家琦，王克协）
Geophysical
Exploration for Metal and Non-metal
(Conveners: Wang Ping Xiong
Shengqing Lu Qingtian)
第四专题：金属与非金属矿勘查技术及成果
(负责人：王平 熊盛青 吕庆田)
Wang Fang et al.,
(Department of Geophysics, CUG, Wuhan 430074)
Magneto-gravity
response function is represented relation between magnetic and gravity fields
in frequency domain (i.e., Poisson’s formula). It reveals the phase
relationship between magnetic and gravity anomalies. We can determine the
magnetization direction caused magnetic anomalies, but the density-to-magnetization
ratio must be constant.
（重磁响应函数在确定磁化方向中的应用 王芳）
Combined
Prospecting for Lead-Zinc Deposit by Tomography Resistivity and Electrical
Sounding of Induced Polarization in Luanchuan Region
Li qinglin1 Xing keyuan2 et.al.
1）Research Center
of Exploration Geophysics,CSB,Zhengzhou,450002
2) Team 308 of Geological Bureau in Central-South China，Xinyang,464000
Abstract
In exploration of Lead-zinc deposit in Luanchuan region, both the
resistivity tomography and the electrical sounding of induced polarization
methods are used. The hidden structures in the studied region are mainly
prospected by the resistivity tomography method that uses Wenner(α、β、γ)
or dipole-dipole of the high density resistivity survey system, in which number
of electrodes and pole spacing are decided according to actual conditions.
Variation regularity of induced polarization parameters is mainly studied by
using symmetry 4-pole electrical sounding method, in which the minimum distance
of the AB/2 is 3 m, and the maximum distance of the AB/2 is 500 m. For ore bearing
structures, the induced polarization parameters show high anomaly, and the
apparent polarizabilities are between 15% and 40%, combining these two methods,
we could obtain quickly and exactly the satisfactory results of prospecting for
the mine in the studied region.
（电阻率层析成像和激电测探对栾川铅锌矿的联合勘探 李清林）
Geophysical
Technology and Methods in Hydrologic, Environmental,
Engineering
Investigation and Engineering Quality Monitoring
(Conveners:
Cheng Yexun Zhong Shihang Qian Yuhao Zhao Yonggui)
第五专题：水资源、环境、工程勘察及工程质量监测中的地球物理技术与方法
(负责人：程业勋 钟世航 钱玉好 赵永贵)
Application
of Induced Polarization Method to Discover Groundwater in Granite Region
Ha jianxiu1 Li koucheng2 et.al.
1) water-saving Office of Nanyang City, Nanyang,473060
2) First exploration geology institute of Henan Province, Nanyang,473056
Abstract
In the water-lacking granite region, induced polarization method is often
used to prospect for crack water in basement rocks. This method is
characterized by reflecting rich information for geoelectricity, simply data
processing, and good reliable and perceptibility of results. Utilizing curve
characters of apparent polarizability (η), excitation rate (J), and rate of
decay (D) of induced polarization, combining with curve character of apparent
resistivity(ρs), the distribution of water-bearing layers may be determined
exactly and conveniently, and the qualitative and quantitative
interpretation of electrical data could be performed. It is worth of note that
the interpretation of geophysical data should be attained, combing with integrated
analysis of the hydrogeology data to improve the accuracy to decide the
positions of water-bearing rock and well.
(激发极化法在花岗岩地区找水的应用 韩建秀)
MAIN RESULTS OBTAINED IN DETECTING UNDERGROUND WATER
RESOURCE WITH GEOFHYSICAL METHODS IN TAHE OIL FIELD
Li Zhenyu1 Cheng Yexun2 Pan Yuling1
(1-
China University of Geosciences,Wuhan,430074;2- China
University of Geosciences,Beijing,
100083)
Abstract:
Detecting underground fresh water has is done in Tahe oil field. Main results
obtained are as follows:
The
relationship between electric resistivity variations of rock group containing
water and underground water mineralization is established; anomaly field
characteristics with geophysical methods of different fields are comparable,
therefore reliability of geophysical data interpretation is guaranteed;
influence of rock group contained fresh underground water on alluvium fan of rivers
Weigan and Dina is pointed out; fresh underground water perspective areas in
low mineralization rock group distribution are drawn; method serial of detail
prospecting underground water is chosen and the detail prospecting program
proposed. Correctness of above mentioned results has been confirmed by
drilling.
（在塔河油田用物探方法普查地下水资源的主要成果 李振宇１ 程业勋２ 潘玉玲１）
（１-中国地质大学 武汉 430074 ２-中国地质大学 北京 100083 ）
Simulation of Borehole Radar
Sixin LIU1 and Motoyuki SATO2
1.
Department of Geophysics, Jilin University
Changchun, 130026 China
2. Center for Northeast Asian Studies, Tohoku University
Kawauchi,
Sendai, 980-8756 Japan
Abstract: Borehole
radar is electromagnetic subsurface system. Because of the complexity of both
the tool and the subsurface medium, it is difficult to understand its
performance sometimes experimentally. Numerical method can help us to
understand the performance of borehole radar. Sub-grid based FDTD is given in
this paper, it can save the memory and CPU time to a great degree. Then, both
the transmitter and the receiver antennae are modelled. At last, Borehole radar
responses to some geological targets are presented.
（井中雷达的数值模拟 刘四新1，佐藤源之2）
（1.吉林大学 地球物理系，吉林 长春130026； 2.日本国东北大学东北亚研究中心，日本国仙台市青叶区川内，980-8576）
Application
of High Density Resistivity Survey Method to Detecting Underground Civil Air
Defensive Projects
Zhang jianzhi
（Research Center
of Exploration Geophysics,CSB,Zhengzhou,450002）
Abstract
We can achieve the satisfactory results for detecting underground
civil air defensive projects by using the high density resistivity method. Based
on the size and buried depth of underground body, we can conveniently select
survey system and electrode interval. High density resistivity 2D inversion
software RES2DINV is used in data processing, which uses least-squares
inversion. This inversion method is very important that it can enhance
the quality of interpretation of data from high resistivity method. When a
profile passes through the ground, where civil air defensive project is just
under its surface, we can easily find out anomaly isoline of high electrical
resistivity on the inversion diagram. It clearly shows that high density
resistivity method is an important way in engineering prospecting.
（高密度电阻率在地下人防工程探测中的应用 张建志）
ZHONG
Shihang
(Zhong
Shihang Work Office, Beijing, 100081)
Since