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high accuracy gravity
相关语句
  高精度重力
    RESIDUAL DENSITY INVERSION FOR HIGH ACCURACY GRAVITY DATA AND ANALYSIS ON ROCK LITHOLOGY AND FRACTURE ZONE
    高精度重力资料剩余密度反演与孔隙裂缝发育带分析
短句来源
    The high accuracy gravity survey in complex seismic geology area
    地震地质条件复杂地区高精度重力勘探的应用效果
短句来源
    This paper srggests removing the effects of regional gravitational fields, and the gravitational fields arising from density interfaces and shallow interference by making use of high accuracy gravity data together with known geological and seismic information so as to yield the residiual gravity anomalies.
    利用高精度重力资料及已具备的地质地震资料,去掉由于密度界面产生的重力场及区域重力场的影响,消除浅部干扰,求得剩余重力异常。
短句来源
    As a result, the application of the method in recognizing weak anomalies of high accuracy gravity survey and determining the accurate position of buried hill in oil-bearing sedimcntary basin has brought forth sat isfactory results.
    将该方法应用于某含油气沉积盆地上高精度重力细测微弱异常的识别及古塔山精确位置的求取,取得了满意的效果。
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  “high accuracy gravity”译为未确定词的双语例句
    Based on the analysis of well drilling and physical property,using the high accuracy gravity and magnetic survey,the field modelling suvery depth,the seismic data,this paper makes a synthetic study of the Paleozoic Erathem interior lithology,lithofacies and their distribution rule.
    在分析钻井、物性资料的基础上,利用高精度重磁力、建场测深、地震资料,综合研究了塔里木盆地英买力地区古生界内幕岩性、岩相及其分布规律。
短句来源
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Oil gravity survey in China began in 1945, then rather flourished in 1950s.By the end of 1950s,the petroleum industry had 36 gravity survey crews; however, at the beginning of 1960s,the gravity survey crews began to decrease with years. By the mid 1970s, the crew number stopped dropping and staned increasing because gravity survey scored quite good geological effect in exploring buried hills and because gravity survey must be done urgently in many medium-sized and smallsized basins....

Oil gravity survey in China began in 1945, then rather flourished in 1950s.By the end of 1950s,the petroleum industry had 36 gravity survey crews; however, at the beginning of 1960s,the gravity survey crews began to decrease with years. By the mid 1970s, the crew number stopped dropping and staned increasing because gravity survey scored quite good geological effect in exploring buried hills and because gravity survey must be done urgently in many medium-sized and smallsized basins. The practice shows that gravity survey is a quite good exploration method for researching into areal geological structure be- cause of its merits: low cost, fast operation and nice effect. Furthermore, gravity survey also brings good result in researching into the local geological structure, particularly the buried hills. Looking forward to the future,we have the following works to do: · Areal exploration of new basins; · New comprehensive study of old basins using not only new and old gravimetric data but also other geophysical and drilling data; · Mountainous-district gravity survey in combination with seismic exploration, and the improvement of both its accuracy and its effect; · High-accuracy gravity survey which mainly focuses its attention on buried hill; · Scientific researches on borehole gravity survey.aerogravity survey and the new data processing technique.

我国于1945年开始进行石油重力勘探,五十年代有过较大的发展,五十年代末石油系统已有36个重力队,从六十年代初开始,重力队数逐渐减少,直至七十年代中期以后,由于重力勘探古潜山取得了较好的地质效果,并且有许多中小盆地急需进行重力勘探,重力队数才得到稳定和发展。事实证明:重力勘探是研究区域地质结构较好的物探方法,具有投资少、速度快、效果好的特点,在研究局部地质结构,尤其是勘探古潜山方面也有良好的效果。展望将来,有以下几方面的工作要做: 1.开展新盆地的区域勘探; 2.利用新、老重力资料,结合其它物探及钻井资料重新综合研究老盆地; 3.配合地震勘探开展山区重力勘探,并提高其精度和效果; 4.开展以勘探古潜山为主要对象的高精度重力测量; 5.探索井下重力测量、航空重力测量以及新的资料处理技术。

This paper srggests removing the effects of regional gravitational fields, and the gravitational fields arising from density interfaces and shallow interference by making use of high accuracy gravity data together with known geological and seismic information so as to yield the residiual gravity anomalies. Constrained by drilling data, inversion for residual density distribution is then performed to find out where fractures densely flock (i. e. the zone in which oil/gas potentialy accumulates) in...

This paper srggests removing the effects of regional gravitational fields, and the gravitational fields arising from density interfaces and shallow interference by making use of high accuracy gravity data together with known geological and seismic information so as to yield the residiual gravity anomalies. Constrained by drilling data, inversion for residual density distribution is then performed to find out where fractures densely flock (i. e. the zone in which oil/gas potentialy accumulates) in reservoir rocks. While confirmed to be effective via some theoretical model examples, the method was also applied to the real data from DaZuo area of Sichuan Province in delineating the lithology and fracture traps of this area. The results from the inversion are further verified via the comparison with known well-log, geological and other geophysical data. It is concluded that the method proposed in the paper is promising to be an useful tool in locating fracture type reservoirs in marine carbonate areas.

利用高精度重力资料及已具备的地质地震资料,去掉由于密度界面产生的重力场及区域重力场的影响,消除浅部干扰,求得剩余重力异常。用钻井资料作控制,反演求得剩余密度分布,以了解储层岩石孔隙裂缝发育带,从而达到直接或间接寻找油气藏的目的。理论模型试算证明方法是可行的;通过四川大足弥陀场地区实际资料的处理,推断了本区的岩性裂隙圈闭;并与已知的钻井地质资料及其它地球物理资料对比验证,说明了反演结果是可靠的。为在海相碳酸盐岩地区寻找岩性缝油气藏提供了一种方法手段。

In this papcr, we make use of the orthogonal transformation method to transform the coefficient matrix of trcnd surface analysis to a diagonal matrix so as to avoid solving ill-conditioned system of cquations and improve the precision of solution . Meanwhile , the normal equations are transformed to a first-ordcr system of cquations which is very casy to solve,thcrefore, the solving process is sped up. Furthcr, the order-fixed trend surface analysis which is responsible for false anomaly is replaeed by sliding...

In this papcr, we make use of the orthogonal transformation method to transform the coefficient matrix of trcnd surface analysis to a diagonal matrix so as to avoid solving ill-conditioned system of cquations and improve the precision of solution . Meanwhile , the normal equations are transformed to a first-ordcr system of cquations which is very casy to solve,thcrefore, the solving process is sped up. Furthcr, the order-fixed trend surface analysis which is responsible for false anomaly is replaeed by sliding window and order-variant trend surface analysis. As a result, the application of the method in recognizing weak anomalies of high accuracy gravity survey and determining the accurate position of buried hill in oil-bearing sedimcntary basin has brought forth sat isfactory results.

本文引用正交变换法将趋势面分析中的系数矩阵化为对角阵,避免了求解病态方程组,提高了解的精度。同时正规方程组可变为十分容易求解的一次方程组,因而加快了求解速度。采用自动改变滑动窗口,改变趋势面阶数的办法,解决了因一次性选取固定趋势面而出现虚假异常的难题。将该方法应用于某含油气沉积盆地上高精度重力细测微弱异常的识别及古塔山精确位置的求取,取得了满意的效果。

 
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