Dicussion on well selection conditions of CO<sub>2</sub> huff and puff in low permeability reservoir

Wang Jun

doi:10.13809/j.cnki.cn32-1825/te.2019.03.011

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Dicussion on well selection conditions of CO₂ huff and puff in low permeability reservoir

更新时间：2025-12-05

- Dicussion on well selection conditions of CO₂ huff and puff in low permeability reservoir
- Petroleum Reservoir Evaluation and Development Vol. 9, Issue 3, Pages: 57-61(2019)
- 作者机构：
  
  中国石化华东油气分公司勘探开发研究院,江苏,南京,210011
- 作者简介：
- 基金信息：
- DOI：10.13809/j.cnki.cn32-1825/te.2019.03.011
  CLC： TE357
- Published：2019
- 稿件说明：
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Wang Jun. Dicussion on well selection conditions of CO₂ huff and puff in low permeability reservoir[J]. Petroleum Reservoir Evaluation and Development, 2019, 9(3): 57-61.
DOI：

Wang Jun. Dicussion on well selection conditions of CO₂ huff and puff in low permeability reservoir[J]. Petroleum Reservoir Evaluation and Development, 2019, 9(3): 57-61. DOI： 10.13809/j.cnki.cn32-1825/te.2019.03.011.

摘要

苏北盆地低渗透油藏分布广

普遍存在天然能量不足且构造破碎

难以形成有效注采井网等问题

因此

水驱效果差。CO

吞吐能有效解决这一问题

并且投入少、工艺简单、见效快。选择合适的油井实施是该项工艺成败的关键。通过对苏北盆地低渗透油藏近年实施的CO

吞吐情况进行对比分析

结合室内物理模拟实验及数值模拟成果

认为埋深为中—深层

裂缝发育的封闭油藏较适合实施CO

吞吐

裂缝对吞吐效果影响较大

地层压力存在一个适宜区间

并非越大越好

是否能达到混相对吞吐效果并无决定性影响。位于构造较低部位

初产高

含水在30 %~70 %的油井比较有利于吞吐

水平井实施吞吐效果优于直井。

Abstract

Low permeability reservoirs are widely distributed in Subei（northern Jiangsu province） Basin. There are some problems such as insufficient natural energy and fragmented structures

which make it difficult to form an effective injection-production well pattern. Therefore

the effect of water injection is poor. The CO

huff and puff technology can effectively solve these problems with less investment

simple process and rapid results. Choosing the proper wells to execute is the key to the success of this technology. Based on the comparative analysis of CO

huff and puff in low permeability reservoirs in Subei Basin in recent years

combined with indoor physical simulation experiments and numerical simulation results

is considered that closed reservoirs with medium-deep burial depth and fracture development are more suitable for CO

huff and puff. Fractures have a greater impact on huff and puff effect. There is an appropriate interval for formation pressure

not the bigger the better

whether miscibility can be achieved or not. It has no decisive effect on the throughput effect. Oil wells with high initial production and water cut of 30 %~70 % in lower structure are more conducive to huff and puff

and the huff and puff effect of horizontal wells is better than that of vertical wells.

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Related Author

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Cui Yinan

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Wang Shunli

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Related Institution

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University

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CNOOC Research Institute Co., Ltd.

Hubei Key Laboratory of Drilling and Production Engineering for Oil and Gas, Yangtze University

School of Petroleum Engineering, Yangtze University

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Dicussion on well selection conditions of CO2 huff and puff in low permeability reservoir

DOI：10.13809/j.cnki.cn32-1825/te.2019.03.011

摘要

Abstract

关键词

Keywords

references

Dicussion on well selection conditions of CO₂ huff and puff in low permeability reservoir