Special Oil & Gas Reservoirs >

2025 , Vol. 32 >Issue 1: 127 - 134

DOI: https://doi.org/10.3969/j.issn.1006-6535.2025.01.015

Reservoir Engineering

Experiment on effective capacity of gas storage reconstructed from Baogu-2 Reservoir

  • HE Haiyan ,
  • XIN Chunyan ,
  • SHANG Lin ,
  • ZHU Shijie ,
  • XIANG Zuping ,
  • GAO Guangliang ,
  • SUN Yanchun ,
  • WANG Yi
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  • 1. Petrochina Jidong Oilfield Company,Tangshan,Hebei 063200, China;
    2. Chongqing University of Science and Technology,Chongqing 401331, China;
    3. China Oilfield Services Ltd Tianjin Branch,Tianjin 300457, China

Received date: 2023-11-05

  Revised date: 2024-11-04

  Online published: 2025-05-13

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Abstract

The capacity constitutes one of the most crucial indicators for the reconstruction of gas storage.The greater the capacity of the gas storage,the stronger the capabilities of carrying,gas storage and peak shaving,and the greater the ability to guarantee the demand for gas.Therefore,forecasting the capacity holds significant importance for the construction of gas storage.In order to clarify the effective capacity of the gas storage reconstructed from the Baogu-2 Reservoir,a multi-period interactive displacement relative permeability experiment and a long core injection-production experiment were conducted.The experimental results indicate that after 5 cycles of oil-water mutual displacement,the capacity decreases by 7.71 percentage points.After gas-water mutual displacement and gas-oil mutual displacement,the capacity increases by 1.50 and 3.14 percentage points respectively.After 5 cycles of injection-production experiments,the reservoir capacity space increased by 32.38 percentage points.Multi-cycle injection and production can continuously mobilize the internal fluid of the core to enhance the capacity.Effective measures ought to be adopted to prevent edge and bottom water from intruding oil areas,minimize oil-water mutual drive,and improve the effective displacement of injected gas to pure oil areas and water-flooded areas,so as to realize efficient storage construction in mutual drive areas.Reasonable design of injection-production plan can further improve the effective capacity of gas storage.This study can offer technical support for the reconstruction of gas storage in edge and bottom water reservoirs.

Key words： gas storage; the law of relative permeability; injection-production experiment; capacity; Baogu-2 Reservoir

Cite this article

HE Haiyan , XIN Chunyan , SHANG Lin , ZHU Shijie , XIANG Zuping , GAO Guangliang , SUN Yanchun , WANG Yi . Experiment on effective capacity of gas storage reconstructed from Baogu-2 Reservoir[J]. Special Oil & Gas Reservoirs, 2025 , 32(1) : 127 -134 . DOI: 10.3969/j.issn.1006-6535.2025.01.015

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