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Evaluation of Well Pattern Adaptability in Low-Permeability Carbonate Gas Reservoir

  • Jian-guo Zhang
  • Jin-hua Liu
  • Min Tian
  • Lei He
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

Well pattern adaptability is a key factor in determining gas recovery. Based on the characteristics of low-permeability, thin-layer and multi-layer development of carbonate reservoir in Jingbian Gas Field, the interference test, production dynamic analysis, pressure drop curve analysis and gas well radius evaluation were carried out, and the adaptability of well pattern system and residual reserves distribution were made clarified. The results showed that the average single well controlled radius of the main layer is 1.3 km, and the well pattern is basically perfect; the average single well controlled radius of the other five secondary layers is 0.2–0.6 km, and the well pattern is not perfect; the residual reserves are mainly distributed in the secondary layers, groove or channel edges and local tight areas. The research has formed the evaluation method of the well pattern of developed gas fields and has developed the corresponding development countermeasures for the quality and distribution characteristics of different types of residual reserves. It has been used in the development of Jingbian Gas Field in order to provide a basis to improve the gas recovery and also to provide reference for well pattern adaptability evaluation and infilling wells deployment of other similar gas fields.

Keywords

Low-permeability gas reservoir Well pattern Adaptability evaluation Remaining reserves Internal infilling 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Jian-guo Zhang
    • 1
    • 2
  • Jin-hua Liu
    • 3
  • Min Tian
    • 1
    • 2
  • Lei He
    • 1
    • 2
  1. 1.National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas FieldsXi’anChina
  2. 2.Exploration and Development Research Institute of PetroChina Changqing Oilfield CompanyXi’anChina
  3. 3.International Cooperation Department of PetroChina Changqing Oilfield CompanyXi’anChina

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