储层描述

储层流体地球动力学有助于深入了解储层连通性

本文作者描述了储层流体地球动力学过程,解释了不同储层区域内和跨区域石油成分和性质变化的原因。

该油田的卡通结构图,其中彩色圆圈代表油井,橙色线代表断层,黑色线代表等高线。
该油田的卡通结构图,其中彩色圆圈代表油井,橙色线代表断层,黑色线代表等高线。
来源:IPTC 23723。

储层通常被各种屏障分隔开来,包括由地球动力学过程(例如断层)形成的构造流动屏障,以及沉积地层屏障(例如页岩断层)。除了构造地球动力学之外,储层-流体-地球动力学 (RFG) 过程(例如流体混合)定义了响应储层容器演变的流体系统。作者研究了 RFG 过程,以解释不同储层隔室内部和跨隔室原油成分和性质差异的原因。完整的论文还探讨了如何利用电缆测井测量推断流体的影响。

介绍

由于断层和压裂、断块迁移、背斜形成和生长、盐运动效应和成岩作用等地球动力学过程导致储层结构发生变化,储层流体会经历各种各样的 RFG 过程,这些过程直接受到储层结构变化的影响。

SPE徽标CMYK反式
成为 SPE 会员继续阅读
SPE 会员:请在页面顶部登录,即可访问此会员专属内容。如果您还不是会员,但觉得 JPT 内容很有价值,我们鼓励您加入 SPE 会员社区,获取完整访问权限。
原文链接/JPT
Reservoir characterization

Reservoir-Fluid Geodynamics Enable Insights Into Reservoir Connectivity

The authors of this paper describe reservoir-fluid-geodynamics processes that explain the reasons behind varying oil compositions and properties within and across different reservoir compartments.

Cartoon structure map of the field, where colored circles representwells, orange lines represent faults, and black lines represent contour lines.
Cartoon structure map of the field, where colored circles representwells, orange lines represent faults, and black lines represent contour lines.
Source: IPTC 23723.

Reservoirs often are compartmentalized by barriers, including structural flow barriers resulting from geodynamic processes such as faulting or depositional stratigraphic barriers such as shale breaks. Along with structural geodynamics, reservoir-fluid-geodynamics (RFG) processes such as fluid mixing define fluid systems that respond to their evolving reservoir container. The authors study RFG processes that explain the reasons behind varying oil compositions and properties within and across different reservoir compartments. The complete paper also explores how to infer fluid implications with wireline logging measurements.

Introduction

As reservoir structures change as a result of geodynamic processes such as faulting and fracturing, fault-block migration, anticline formation and growth, halokinesis effects, and diagenesis, reservoir fluids undergo a wide array of RFG processes that are directly affected by changing reservoir structures.

×
SPE_logo_CMYK_trans_sm.png
Continue Reading with SPE Membership
SPE Members: Please sign in at the top of the page for access to this member-exclusive content. If you are not a member and you find JPT content valuable, we encourage you to become a part of the SPE member community to gain full access.