This paper presents an assessment of infill drilling opportunities in a complex multi-layered heterogeneous carbonate formation located in Abu Dhabi offshore. The subject field was developed last century and is currently undergoing further development with line drive horizontal wells. The field is being redeveloped for improved oil recovery at higher production rates with long horizontal wells. An infill assessment process is defined using sector model reservoir simulations for the specific reservoir. Reservoir simulations are performed on pattern sector models to establish the optimum grid for infill evaluation. Also, the models with an appropriate grid size are used to optimize infill placement (vertical and lateral well placement) and infill drilling timing for a couple of geologically similar areas. In the second step, the sector model results are applied to test the full-field infill development plan. The relatively homogeneous geological area shows very uniform displacement with 1-km spaced wells and gives no considerable benefit of incremental recovery through infill drilling. However, in a comparatively heterogeneous geological area, considerable incremental oil recovery is quantified. In brief, this paper presents a detailed infill drilling and well placement assessment process workflow for the re-development of a multi-layered heterogeneous reservoir.

本文介绍了位于阿布扎比近海的复杂的多层非均质碳酸盐岩地层中的填充钻探机会的评估。该领域是上个世纪开发的，目前正在通过管道驱动水平井进行进一步开发。该油田正在重新开发，以通过较长的水平井提高采油率，提高生产率。使用针对特定储层的扇区模型储层模拟来定义填充评估过程。在模式扇形模型上进行储层模拟，以建立用于填充评估的最佳网格。而且，具有适当网格尺寸的模型用于优化几个地质相似区域的填充物位置（垂直井和侧井位置）和填充物钻进时间。第二步 部门模型结果将用于测试全场填充开发计划。相对均匀的地质区域显示，井距为1 km时，井眼位移非常均匀，通过填充钻探进行增量采收并没有太大好处。然而，在一个相对异质的地质地区，定量的可观的增量采油量被量化。简而言之，本文介绍了用于多层非均质油藏重新开发的详细的填充钻探和井位评估过程工作流程。量化了可观的增量采油量。简而言之，本文介绍了用于多层非均质油藏重新开发的详细的填充钻探和井位评估过程工作流程。量化了可观的增量采油量。简而言之，本文介绍了用于多层非均质油藏重新开发的详细的填充钻探和井位评估过程工作流程。