贵州省松桃县道坨超大型锰矿床的发现及其成因探讨   总被引：5，自引：0，他引：5  

安正泽  张仁彪  陈甲才  覃英  潘文  吴桂武  彭乾云  郑超  张飞飞  朱祥坤  王海宾 《矿床地质》2014,33(4):870-884

贵州省松桃县道坨锰矿床是新发现的一个超大型全隐伏锰碳酸盐矿床。文章阐述了该矿床的发现概况及基本的地质和地球化学特征,并应用锰矿石和含锰黑色页岩的元素和碳同位素地球化学特征对菱锰矿的形成机制提出了制约。道坨超大型锰矿床的发现是填图及对区域地质资料综合分析的结果。该矿床具有品位高、厚度大、呈层性好及展布广等特点。其锰矿石的主量元素特征为Al2O3、TiO2、Fe2O3含量较低,P2O5中等程度富集,MnO、MgO含量相对较高,Fe/Mn比值低。在微量元素方面,锰矿石显示出较为明显的Co富集,含锰黑色页岩则显示出较为明显的Co、Mo富集;在稀土元素方面,锰矿石具有较高的稀土元素总量,轻微的"帽式"稀土元素PAAS标准化配分模式及明显的Ce正异常,含锰黑色页岩的稀土元素总量与PAAS接近,其稀土元素PAAS标准化配分模式较为平坦,无Ce异常。碳同位素测试结果显示出菱锰矿富集碳的轻同位素,表明在菱锰矿形成过程中存在有机碳的参与。文章表明,道坨锰矿床内的锰是以氧化物或氢氧化物的形式沉淀,菱锰矿是在缺氧且富含有机物质的成岩环境中转化而成。  相似文献   

Interpretation models and charts of production profiles in horizontal wells     

Guo  HaiMin  Liu  JunFeng  Dai  JiaCai  Wang  Kai  Song  HongWei 《中国科学:地球科学(英文版)》2010,52(1):159-164

Stratified flow is common for the gravity segregation and flow regimes are very complex because of borehole inclination, therefore, all the conventional production logging tools cannot be effectively applied in horizontal wells, thus significantly increasing the difficulties in log interpretation. In this paper, firstly, the overseas progress in updated integration tools for horizontal wells and production profile interpretation methods has been discussed in brief. Secondly, by means of theory study and experimental simulations, we have obtained the production profile interpretation model and experimental interpretation charts, which have been calibrated by the improved downhole technology and optimization methods. Finally, we have interpreted X-well with the production profile interpretation software designed by us, and it proves that the methods are useful for the production profile interpretation in horizontal wells.

  相似文献   

Interpretation models and charts of production profiles in horizontal wells     

HaiMin Guo  JunFeng Liu  JiaCai Dai  Kai Wang  HongWei Song 《中国科学D辑(英文版)》2009,52(1):159-164

Stratified flow is common for the gravity segregation and flow regimes are very complex because of borehole inclination, therefore, all the conventional production logging tools cannot be effectively applied in horizontal wells, thus significantly increasing the difficulties in log interpretation. In this paper, firstly, the overseas progress in updated integration tools for horizontal wells and production profile interpretation methods has been discussed in brief. Secondly, by means of theory study and experimental simulations, we have obtained the production profile interpretation model and experimental interpretation charts, which have been calibrated by the improved downhole technology and optimization methods. Finally, we have interpreted X-well with the production profile interpretation software designed by us, and it proves that the methods are useful for the production profile interpretation in horizontal wells.  相似文献