非常规/复杂油藏

研究细节 Vaca Muerta 操作员完成情况的演变

本文解释了运营商在 Vaca Muerta 的项目如何通过提高产量和缩短油井交付周期时间来提高效率和成本效益,同时促进项目的长期可持续性。

Austral 多个油田的总时间表、项目不同阶段完成的油井数量
Austral 多个油田的总时间表、项目不同阶段完成的油井数量。

内乌肯盆地的运营商开发了 Vaca Muerta,但取得了不同的结果。就操作员的工作而言,大约 10 年前的垂直探井已经让位于当前的开发阶段,该阶段采用针对不同平台的多水平井场。作者讨论了运营商如何通过提高产量和缩短油井交付周期时间来提高效率和成本效益,同时通过减少运营对环境的影响来促进项目的长期可持续性。

油田完井的演变

作者重点关注运营商的 A 领域,多年来该领域取得了最大的进展。完整的论文详细介绍了开发的探索和评估阶段。

试点阶段。此阶段的主要目标是验证先前确定的两个着陆区(即 B 区和 D 区)的生产力。这些井位于垂直井附近。

完成。该项目共钻了 12 口水平井,但其中仅完成了 10 口(由于钻井和套管完整性问题,损失了两口井)。井侧向长度在1000~1500m之间。

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Unconventional/complex reservoirs

Study Details Evolution of Operator’s Completions in Vaca Muerta

This paper explains how an operator’s projects in the Vaca Muerta have become more-efficient and cost-effective by increasing production and reducing well-delivery-cycle time while fostering the long-term sustainability of the project.

Total Austral timeline for several fields, number of wells completed at different phases of the project
Total Austral timeline for several fields, number of wells completed at different phases of the project.

Operators in the Neuquén Basin have developed Vaca Muerta with different results. In the case of the operator whose work is featured in the complete paper, vertical exploratory wells almost 10 years ago have given way to a current development phase with multihorizontal well pads targeting different landings. The authors discuss how the operator has become more efficient and cost-effective by increasing production and reducing well-delivery-cycle time, while fostering the long-term sustainability of the project by reducing the environmental impact of operations.

Evolution of Field Completions

The authors focus on the operator’s Field A, where the most progress has been made over the years. The exploratory and appraisal phases of the development are detailed in the complete paper.

Pilot Phase. The primary goal for this phase was to validate the productivity of two previously identified landing zones, namely Zones B and D. The wells were located near the vertical wells.

Completion. The campaign program accounted for 12 drilled horizontal wells, only 10 of which were completed (two wells were lost because of drilling and casing-integrity issues). Well lateral length ranged between 1000 and 1500 m.

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