Selection of the optimal technology of re-fracturing on horizontal wells with multi-stage fracturing at the field M

M. V. Firsin, E. A. Demidova

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In order to achieve economical profitability from hydrocarbon production from formations a lot of horizontal wells are stimulated by means of multi-stage hydraulic fracturing operations. However, as analysis of production data shows duration of effect after this kind of stimulation is not long, average duration is about 9-10 months. This decline in well productivities leafs to necessity of re-fracturing. Despite the causes of productivity decline, whether it is failures during primary stimulation or natural reservoir depletion, re-fracturing operation allows to restore productivity indexes and attract new recoverable reserves. Basically, two ways to perform re-fracturing are suggested, they are: 1) re-fracturing in existing perforation intervals., 2) re-fracturing by establishing additional fractures between existing ones. Based on the achieved analysis results, a set of recommendations can be made: 1. Using more aggressive design for re-fracturing operation gives higher increase in well's productivities relative to design of primary stimulation 2. Re-fracturing in existing perforation intervals is not effective with comparison to establishing additional fractures 3. Influence of interference between additional and existing fractures should be taken into account prior to selection quantity of new fractures at re-fracturing operations.

Original languageEnglish
Title of host publication7th EAGE Saint Petersburg International Conference and Exhibition
Subtitle of host publicationUnderstanding the Harmony of the Earth's Resources Through Integration of Geosciences
PublisherEuropean Association of Geoscientists and Engineers, EAGE
Pages608-612
Number of pages5
ISBN (Electronic)9781510822498
DOIs
Publication statusPublished - 2016
Event7th EAGE Saint Petersburg International Conference and Exhibition: Understanding the Harmony of the Earth's Resources Through Integration of Geosciences - Saint Petersburg, Russian Federation
Duration: 11 Apr 201614 Apr 2016

Publication series

Name7th EAGE Saint Petersburg International Conference and Exhibition: Understanding the Harmony of the Earth's Resources Through Integration of Geosciences

Other

Other7th EAGE Saint Petersburg International Conference and Exhibition: Understanding the Harmony of the Earth's Resources Through Integration of Geosciences
CountryRussian Federation
CitySaint Petersburg
Period11.4.1614.4.16

ASJC Scopus subject areas

  • Geology
  • Geophysics
  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Firsin, M. V., & Demidova, E. A. (2016). Selection of the optimal technology of re-fracturing on horizontal wells with multi-stage fracturing at the field M. In 7th EAGE Saint Petersburg International Conference and Exhibition: Understanding the Harmony of the Earth's Resources Through Integration of Geosciences (pp. 608-612). (7th EAGE Saint Petersburg International Conference and Exhibition: Understanding the Harmony of the Earth's Resources Through Integration of Geosciences). European Association of Geoscientists and Engineers, EAGE. https://doi.org/10.3997/2214-4609.201600149