储层表征

研究回顾运营商在坎波斯盆地和桑托斯盆地使用4D地震勘探的情况

本文概述了运营商在过去十年左右的时间里对 4D 时移地震技术的应用，并展望了未来。

图 1——Mero PRM 系统（黑线）的示意图，该系统将安装用于对正在生产的油藏（暖色）进行地震监测。
图 1——Mero PRM 系统（黑线）的示意图，该系统将安装用于对正在生产的油藏（暖色）进行地震监测。
来源：OTC 35717。

本文概述了过去十年中运营商应用4D时移地震技术的情况，并展望了未来的发展前景。文中分享的部分成果，涵盖盐下和盐下油藏，包括：坎波斯盆地碎屑岩油藏中油气驱油效率和采收率的提高、油井干预的指导以及地质和工程模型预测能力的提升。

运营商对地震监测技术的使用

近几十年来，在巴西许多盐下油气田中，已应用拖缆技术监测生产效应。该技术重复性较低至中等，但其适用于低岩骨架刚度的油藏监测，因此被广泛用于油藏监测。作业者已在多个硅质碎屑岩油藏的TL项目中成功应用拖缆技术。

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原文链接/JPT
Reservoir characterization

Study Reviews Operator’s Use of 4D Seismic in Campos and Santos Basins

This paper provides an overview of an operator’s application of 4D time-lapse seismic technology over approximately a decade and includes future perspectives.

Fig. 1—Schematic of Mero PRM system (black lines) to be installed to seismically monitor the reservoir undergoing production (hot colors).
Fig. 1—Schematic of Mero PRM system (black lines) to be installed to seismically monitor the reservoir undergoing production (hot colors).
Source: OTC 35717.

This paper provides an overview of the application of 4D [time-lapse (TL)] seismic technology by the operator during the past decade and future perspectives. Some results shared in this publication, from both pre- and post-salt reservoirs, include increased hydrocarbon sweep efficiency and recovery factor in siliciclastic reservoirs in the Campos Basin, guidance of intervention in wells, and improvement of predictability of geological and engineering models.

Operator Use of Seismic Monitoring Technologies

In recent decades, streamer technology has been applied to monitor production-derived effects in many Brazilian post-salt hydrocarbon fields. The main reason for the use of this technology, which has low to medium repeatability, for reservoir monitoring is that it is sufficient to monitor reservoirs with low rock-frame stiffness. The operator obtained success in TL projects using streamer in several siliciclastic reservoirs.

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