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New Methods and Workflows Boost Effectiveness of Multizone Stimulation

Novel multizone stimulation technologies have enabled the development of tight resources that previously could not be developed economically and have enabled optimization of production resources distributed over thick gross intervals. These technologies are expected to become more broadly used for numerous applications worldwide because of their ability to rapidly place numerous stimulation treatments tailored to the specific needs of each zone, pump each treatment efficiently and effectively, and make more efficient use of equipment, people, and surface-site development.

Introduction

Unique stimulation challenges arise when hydrocarbon resources comprise multiple vertically distributed discrete reservoir intervals contained in long productive intervals or when targeting tight reservoirs with horizontal wells having extended lateral sections in reservoirs with significant heterogeneity. The overall challenge is characterized by the need to manage a balance between the number of stimulations performed, stimulation-treatment quality, cost, and the overall reliability of treatment placement and execution. Currently, managing this balance can result in operators intentionally bypassing less-attractive hydrocarbon intervals, incurring lower production because of poor stimulation effectiveness, labeling resources as uneconomic on the basis of the cost required to access the reserves, or having difficulty in achieving reliable and effective treatment placement. During the last decade, extensive research and field experimentation enabled the development of unique workflows, modeling capabilities, and stimulation methods for tight sandstone, shale, and carbonate formations.

This article, written by Editorial Manager Adam Wilson, contains highlights of paper IPTC 16865, “Improved Methods and Workflows for Multizone Stimulation,” by Kris Nygaard, SPE, ExxonMobil Production; Shekhar Gosavi and Pavlin Entchev, SPE, ExxonMobil Development; and Fuping Zhou, SPE, Wadood El-Rabaa, SPE, and Chris Shuchart, SPE, ExxonMobil Upstream Research, prepared for the 2013 International Petroleum Technology Conference, Beijing, 26–28 March. The paper has not been peer reviewed. Copyright 2013 International Petroleum Technology Conference. Reproduced by permission.
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New Methods and Workflows Boost Effectiveness of Multizone Stimulation

01 June 2013

Volume: 65 | Issue: 6

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