...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Natural Gas Geoscience >The origin of fluid in calcite veins and its implications for hydrocarbon accumulation in the Shunnan-Gucheng area of the Tarim Basin, China
【24h】

The origin of fluid in calcite veins and its implications for hydrocarbon accumulation in the Shunnan-Gucheng area of the Tarim Basin, China

机译：方解石静脉中液体的起源及其对塔里木盆地龙南沟区碳化碳地区的碳氢化合物积累的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The high-angle, structural genetic calcite veins of the Ordovician in the Shunnan-Gucheng area in the Tarim Basin provide a convenient study of fluid properties, hydrocarbon migration, and accumulation events in the fault zone of this area. Based on detailed core investigation, studies on fluid inclusions in calcite veins and comparison of geochemical characteristics of limestone matrix and calcite veins were carried out. Multiple types of hydrocarbons inclusion (e.g., dry asphalt inclusion,three-phase hydrocarbon inclusion, oil and water inclusion,gas-rich inclusion) were found in calcite veins. Furthermore, the coexisted aqueous inclusions with the gas–liquid phase had a high homogenization temperature (130–160?°C). The distribution characteristics of18O-depleted (δ18O: ?13.1‰ to ?8.7‰),87Sr-enriched (87Sr/86Sr: 0.708?879 to 0.710?432), relatively high total Rare Earth Elements (REEs), and positive Europium Anomalies indicated that the structural origin of calcite veins was mainly derived from the dissolution of surrounding rocks and diagenetic-hydrocarbon fluids. Participation signs of meteoric water were not proved. The rich hydrocarbon inclusions in the calcite veins indicated that the north-east strike-slip fault zone in the Shunnan-Gucheng area is an essential channel for hydrocarbon migration and accumulation.
机译：塔里木盆地顺南 - 古城地区奥陶艺的高角度，结构遗传方解石静脉提供了对该区域断层区域的流体性质，烃迁移和累积事件的方便研究。基于详细的核心调查，进行了方解石静脉流体夹杂物的研究以及石灰石基质和方解石静脉的地球化学特征比较。在方解石静脉中发现了多种类型的碳氢化合物（例如，干燥沥青包容，三相碳氢化合物包裹物，富含气体含量）。此外，具有气液相的共存水性含量具有高均质化温度（130-160℃）。 18O-inpleted的分布特性（Δ18O：13.1°至α.8.7‰），87SR富集（87SR / 86SR：0.708？879至0.710？432），相对较高的稀土元素（REES）和阳性铕异常表明方解石静脉的结构起源主要来自周围岩石和成岩 - 烃流体的溶解。没有证明陨石的参与迹象。方解石静脉中富含烃类含水剂表明，顺南 - 古城地区东北防滑断裂区是碳氢化合物迁移和积累的必要渠道。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号