影响荧光光谱分析质量的因素   总被引：2，自引：1，他引：1  

宁丽荣  沈洪久  李武  张庆珍  王波舫 《物探与化探》2008,32(6)

荧光光谱分析是油气化探中非常重要的一种分析方法,因此在地表样品的分析中,荧光光谱质量就显得尤其重要。消除影响因素,保证分析质量,是得到真实的地下油气信息的必要条件。通过实验研究,对影响荧光光谱分析质量的因素的进行探讨,除了在分析过程出现的影响因素外,样品的包装袋也是造成影响的重要因素。  相似文献   

CSAMT法在松辽盆地伊胡塔地区嫩江组中的定位应用   总被引：1，自引：1，他引：0  

李茂  许第桥  杨丽娟  乔勇 《物探与化探》2008,32(6)

上白垩统嫩江组不仅是松辽盆地南部重要的生油层系,而且在本区砂岩型铀成矿中也起着非常重要的作用。从ZK4孔的方法过井测深试验以及地电结构的对比分析入手,对探区内嫩江组的空间分布范围进行了分析研究,通过钻探施工,证实了CSAMT法应用的有效性。  相似文献   

Geochemical characteristics and source analysis of inflow of mine water in Wang’ershan Gold Mine, Shandong   总被引：1，自引：0，他引：1  

QIAN Jianping  LI Shuangli  and CAO Chao Guilin University of Technology  Guilin  China 《中国地球化学学报》2008,(1)

Through a systematic observation of water level and temperature, and a comprehensive analysis of the data on major/trace elements, nitrite, hydrogen-oxygen isotopes, the conclusion has been drawn that there are two relatively independent groundwater systems (cool water and hot water), and the geochemical indicators of hot/cool waters are described. The cool water system is relatively enriched in Ca2 , Mg2 and HCO3-. Its TDS is relatively low, about 1400–1800 mg/L. The hot water system is relatively enriched in K , Na , Cl- and SO42-. Its TDS is relatively high, about 2200–2300 mg/L. The cool water system is enriched in Ba, Ga, Cd, and the hot water system is enriched in B, Ti, Cr, Ni, Cu, Mo, Rb, and Cs, relatively. Especially, the contents of Rb and Cs in the hot water system are more than five times as high as those in the cool water system. The NO3- contents of cool water discharged from the gold mine are relatively high, and those of hot water are extremely low. The δD and δ18O values follow an increasing order of surface water>mine cool water>mine hot water. The cool water comes mainly from the lateral supply of phreatic water, while the hot water comes mainly from the vertical supply of deeply circulating structure-fracture water. The ratio of cool water over hot water was estimated to be about 1:1 by a water quality model..  相似文献   

Helium-argon isotopic tracing for the Pb-Zn-Ag polymetallic ore deposits in the central-south segment of the Da Hinggan Ling Range     

Baode Wang  Shuyin Niu  Aiqun Sun  Huabin Hu  Yaming Liu  Lijun Guo  Shuo Wang 《中国地球化学学报》2008,27(3):235-241

In recent years big strides have been made in the exploration of ores in the central-south segment of the Da Hinggan Ling Range, though some debates still exist on the metallogenesis and sources of ore-forming materials. Pyrite and other sulfides in direct relation to the Pb-Zn-Ag ore deposits were chosen for the He and Ar isotopic analysis of ore-forming fluids, and the first He and Ar isotope data have been obtained from the study region. ^3He/^4He ratios in 14 samples collected from 7 mining districts are 2.17×10^-6-12.52×10^-6, averaging 6.86×10^-6 and their R/Ra ratios are 1.56-9.01 Ra, averaging 4.37 Ra. By projecting the data points onto the ^3He-^4He concentrations diagram, all the points fall near the mantle helium area. The calculated mantle-source helium ratios are within the range of 19.58%-76.96%, with an average of 49.52%. Argon isotopic characteristics are close to those of mantle source, indicating that the ore-forming material was transport upwards via the multi-stage evolution of mantle plume and concentrated as ores in the favorable loci of mantle branch structures.  相似文献   

Study on the connectivity of heavy oil reservoirs by ultraviolet spectrum technique in the western part of the QHD32-6 oilfield     

Yaohui Xu  Dan Chen 《中国地球化学学报》2008,27(3):306-309

As a new method, the ultraviolet spectrum technique is applied to studying the connectivity of biode-gradable heavy oil reservoirs. The similarity of crude oils can be judged according to the extinction coefficient （E） because aromatic hydrocarbons and non-hydrocarbons have conjugated bonds and obvious absorption in the ultraviolet range, and different materials have different characteristics and additives. The relationship diagram is made in terms of the extinction coefficients （E） of the samples by taking E as the Y-axis and wavelength as the X-axis. The connectivity of oil reservoirs is estimated according to the curve positions and characteristic fingerprints of the sampies. The connectivity of part of the reservoirs in the western part of the QHD32-6 oilfield was studied with this method. The results showed that the connectivity of samples from wells F7 and F8 in the Nm-2 oil reservoir zone is good, that of samples from wells F17 and F20 in the Nm-1 oil reservoir zone also is good, and that of samples from wells F17, F19, and F20 is poor.  相似文献   

鄂尔多斯盆地南部晚三叠世沉降与沉积中心研究   总被引：6，自引：1，他引：5  

曹红霞  李文厚  陈全红  肖丽  王立社  卜军  刘正伟 《大地构造与成矿学》2008,32(2):159-164

从古地貌恢复的角度出发,依据残留厚度和补偿厚度印模法原理,恢复了鄂尔多斯盆地晚三叠世早期古地层厚度,从而确定了沉降中心;选取粒度矩法平均值这一参数,对同井位同层位的粒度值求平均值,将所得值投放平面图,获得粒度均值平面等值线图,湖盆中细粒碎屑物质的聚集区反映了古水流的汇合区,指示沉积中心。研究结果表明,鄂尔多斯盆地晚三叠世早期沉降中心位于马家滩-白豹-宜君一线,西南部镇原-崇信一线存在局部沉降区,盆地的地层厚度变化较大,说明晚三叠世差异沉降作用明显;而沉积中心主要位于正宁-合水-姬塬-吴起-志丹-太白-黄陵-黄龙一线围成的区域,由西北向东南延展,并以北西-南东为轴向两侧迁移,长10至长7沉积期湖岸线的变化,反映了受构造沉降速率控制,湖盆的沉积中心不断扩大,长7沉积期湖盆面积最大。  相似文献   

辽宁东五家子金矿矿脉含矿性评价标志研究   总被引：2，自引：1，他引：1       下载免费PDF全文

朴寿成  师磊  杨明亮  王宝岩 《地质找矿论丛》2008,23(3):204-208

辽宁东五家子金矿的矿脉由蚀变岩和石英脉透镜体构成,可采矿体均为硫化物石英脉型.工业矿脉中,石英为烟灰色,发育他形、半自形的细粒黄铁矿等硫化物,有较大规模的矿体.矿化脉中,石英为乳白色,发育粗粒、自形的浅色黄铁矿,无可采矿体.在工业矿脉、次要矿脉、矿化脉的蚀变岩和石英脉样品中,Au,Hg与其他元素的相关性有明显区别.用石英脉样品的As-Ni-Ba图解和蚀变岩样品的Au-Ag-Ba图解预测,矿区外围的西沟1号脉和西沟3号脉属于工业矿脉.  相似文献   

川西南周公山及邻区下二叠统碳酸盐岩成岩作用对储集性的影响   总被引：2，自引：0，他引：2       下载免费PDF全文

冯仁蔚  王兴志  张帆  庞艳君 《地质找矿论丛》2008,23(3):223-229

川西南周公山及邻区下二叠统的中-低孔、中-低渗碳酸盐岩储层的储集空间以次生成因的溶孔、溶洞和构造裂缝为主.研究认为,多世代方解石胶结、化学充填作用以及埋藏期的压实(溶)作用是孔隙很难得到保存的主要原因;同生-准同生期的混合水云化作用和表生期、埋藏期的流体溶蚀作用则产生了大量的次生溶孔、洞,使储层的孔渗性得到明显的改善;构造破裂作用可以产生新的储集空间,还影响各储集体之间及单一储集体内部空隙的连通.成岩相分为混合水云化-溶蚀-破裂相、溶蚀-胶结相和胶结-压实-压溶相.各种成岩作用的叠加形成了现今下二叠统油气储层的分布格局.  相似文献   

广西大厂超大型锡矿的形成条件与成矿模式   总被引：3，自引：0，他引：3       下载免费PDF全文

何海洲 《地质找矿论丛》2008,23(3):187-190

超大型矿床的形成条件有其特殊性.大厂超大型锡矿产出于南丹-昆仑关基底性深大断裂带上,经过多旋回构造-岩浆活动使矿质继承叠加,最后聚积于燕山晚期的岩浆热液中.大厂超大型锡矿床是各种成矿因素良好匹配,并经长时期的多重富集综合作用的结果.  相似文献   

相控建模技术在羊二庄油田的应用   总被引：1，自引：0，他引：1       下载免费PDF全文

冯国杰  向赞  刘存林 《地质找矿论丛》2008,23(3):240-244

羊二庄油田的明馆储层非均质性严重,高含水、高开发后期的剩余油分布比较复杂,第一次油藏描述中应用传统的确定性建模方法已经不能满足剩余油挖潜的需要.采用RMS相控建模软件,通过构造建模、沉积微相建模、储层物性建模,建立羊二庄油田三维可视化相控地质模型,并实现了与数模软件的无缝接口.  相似文献