非常规/复杂油藏

多学科综合方法消除了骨折表征的模糊性

本文提出了一种多领域方法来解决控制科威特探井碳酸盐层的裂缝系统的岩石物理和地质力学方面的问题,以评估增产的产能和资格。

解释的骨折(红色)与 3DFFS 骨折(粉色)之间的相关性表示。
图 1-表示解释的断裂(红色)和 3DFFS 断裂(粉色)之间的相关性。
SPE 213771。

在致密、低孔隙度的复杂储层中,裂缝系统在生产中发挥着重要作用。科威特北部的一口勘探井以中马拉特地层为目标,该勘探井在勘探不足的油田中遇到了储层分区的不确定性,需要最少的偏移井来正确评估其潜力。提出了一种多领域方法,利用不同类型的专业知识来解决控制碳酸盐层的裂缝系统的岩石物理和地质力学方面的问题,并评估其生产能力和通过水力压裂进行增产的资格。

介绍

针对 Marrat 地层(一种致密、低渗透碳酸盐岩侏罗系油藏)对 A 井进行了综合研究。在过去的二十年中,作业者已经通过该地层钻探了许多直井和斜井。

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Unconventional/complex reservoirs

Multidisciplinary Integrated Approach Unlocks Fracture-Characterization Ambiguity

This paper proposes a multidomain approach to tackle petrophysical and geomechanical aspects of a fracture system governing the carbonate layer of an exploration well in Kuwait to assess producibility and qualification for stimulation.

Representation of the correlation between interpreted fractures (red) and fractures from 3DFFS (pink).
Fig. 1—Representation of the correlation between interpreted fractures (red) and fractures from 3DFFS (pink).
SPE 213771.

Fracture systems play a significant role in production in the case of tight, low-porosity complex reservoirs. An exploration well in North Kuwait that targeted the Middle Marrat formation encountered uncertainty regarding reservoir compartments in an underexplored field, with minimal offset wells to properly evaluate its potential. A multidomain approach is proposed leveraging different types of expertise to tackle the petrophysical and geomechanical aspects of the fracture system governing the carbonate layer and assess its producibility and qualification for stimulation through hydraulic fracturing.

Introduction

A comprehensive study was performed on Well A targeting the Marrat formation, a tight, low-permeability carbonate Jurassic reservoir. During the last two decades, the operator has drilled many vertical and deviated wells through this formation.

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