Mature fields

Natural Fractures Help Unlock Tight Carbonates in Oman

The authors of this paper develop an integrated technical approach that can be used to unlock one of the largest undeveloped resources in an operator’s portfolio.

A cross section through the Natih sequence
Fig. 1—A cross section through the Natih sequence, which is bounded by a large fault and an erosional surface updip and is sealed by the thick Fiqa shales. OWC: oil/water contact.
Source: SPE 211336.

Within the stratigraphy of one of the largest fields in north Oman is the Natih B reservoir. The development of the reservoir has undergone several challenges over the past decades because of the complexity of the reservoir setting and difficulties in locating the natural fractures. Success in developing such tight carbonates depends on the integration of high-quality seismic, borehole imagery, petrophysics, and dynamic data. The objective of the complete paper is to develop an integrated technical approach that can be used to unlock one of the largest undeveloped resources in the operator’s current portfolio.

Introduction

With approximately 1 billion bbl of oil originally in place in the development area of interest, Natih B is a significant undeveloped resource in the operator’s portfolio.

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