• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Annual Indonesian Petroleum Association convention and exhibition;Indonesian Petroleum Association convention and exhibition >QUARTZ CEMENTATION AND RESERVOIR QUALITY OF THE PLOVER SANDSTONE IN THE ABADI GAS FIELD
【24h】

QUARTZ CEMENTATION AND RESERVOIR QUALITY OF THE PLOVER SANDSTONE IN THE ABADI GAS FIELD

机译：阿巴迪气田三叶草砂岩的石英胶结作用和储层质量

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

摘要

Quartz cementation is the most notable diagenetic signature in the Plover reservoir sandstone of the Abadi gas field. It occurs mostly as an overgrowth on the surfaces of detrital quartz grains to a variable degree over the field, and is suspected as a major cause for porosity and permeability reduction of the reservoir. An integrated image analysis was applied to the reservoir sandstones by utilizing cathodoluminescence microscopy, which allowed the volume of quartz cement as well as the depositional texture to be determined in a highly quantitative manner. The analysis has revealed that the amount of quartz cement has negative correlation with the mean grain size for the quartzose sandstones, indicating strong dependence on the depositional texture. The impact of the quartz cementation is interpreted to be quite significant especially on the permeability reduction probably because finer-grained texture provides not only initially-narrower pore throat size, but also more intensive quartz cements in the pore spaces.Structural restoration was also carried out, together with the regional petroleum system analysis, aiming to unravel the burial and the hydrocarbon filling history of the structure. The results indicate that prior to the formation of the current Abadi structure, the northern part of the field area was situated at a relatively shallower depth than the southern part for most of the Tertiary period, implying predominance of lower formation temperatures in the northern part. Because of this, possibly together with the earlier entrapment of the gaseous hydrocarbons in the northern part, the quartz cementation was retarded more effectively in the northern part than in the southern part of the field. The burial and thermal effect on the quartz cementation was also examined from the forward modeling approach,which also suggests that the northern part was at the relatively preferable condition for preservation of the reservoir quality. In summary, the present reservoir quality is concluded to be strongly constrained by the amount of quartz cement originated from the burial and thermal history as well as from the initial depositional texture. Although each of these factors affects the quartz cementation quite differently in areal and vertical scales from the other, both are considered to be of equal importance as controls on the reservoir quality.
机译：石英胶结作用是阿巴迪气田Plover储层砂岩中最明显的成岩标志。在田间，它主要以碎屑状石英颗粒表面的过度生长形式出现，且程度不同，并且被认为是造成储层孔隙度和渗透率降低的主要原因。利用阴极发光显微镜对储层砂岩进行了综合图像分析，从而可以高度定量地确定石英胶结物的体积和沉积质地。分析表明，石英胶结物的量与石英砂岩的平均粒径呈负相关，表明其对沉积质地的强烈依赖性。石英胶结的影响被解释为是非常显着的，尤其是对渗透率的降低，可能是因为更细的纹理不仅提供了最初更窄的孔喉尺寸，而且还提供了孔隙空间中更密集的石英胶结物。 还进行了结构修复，并进行了区域石油系统分析，旨在揭示该结构的埋葬和油气充填历史。结果表明，在当前的阿巴迪构造形成之前，在第三纪的大部分时间里，油田区域的北部比南部的深度要浅，这意味着北部的地层温度较低。因此，可能与北部气态碳氢化合物的较早滞留一起，使北部地区的石英胶结作用比南部地区的胶结作用更有效。还通过正向建模方法研究了埋藏和热作用对石英胶结作用的影响， 这也表明北部地区处于保持储层质量的相对较好的条件。总而言之，目前的储层质量被认为受埋藏和热史以及初始沉积质地所产生的石英胶结物数量的强烈限制。尽管这些因素中的每一个在面积和垂直尺度上对石英胶结的影响都大不相同，但两者都被认为与控制储层质量具有同等重要的意义。

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