复杂岩性低渗透凝析气藏地质工程一体化设计

doi:10.3969/j.issn.1006-6535.2024.06.020

特种油气藏 ›› 2024, Vol. 31 ›› Issue (6): 159-164.DOI: 10.3969/j.issn.1006-6535.2024.06.020

• 钻采工程 • 上一篇

复杂岩性低渗透凝析气藏地质工程一体化设计

冉令博¹, 王佳¹, 鲁文婷¹, 南荣丽¹, 张任平²

1.中国石油新疆油田分公司,新疆克拉玛依 834000;
2.新疆杰科能源科技有限公司,新疆克拉玛依 834000

收稿日期:2024-01-10 修回日期:2024-08-28 出版日期:2024-12-25 发布日期:2025-01-22
作者简介:冉令博(1994—),男,工程师,2016年毕业于东北石油大学海洋油气工程专业,2019年毕业于该校油气田开发工程专业,获硕士学位,现从事采油气工艺、压裂技术研究等工作。
基金资助:
中国石油科技专项“准噶尔盆地凹陷区下组合轻质油与天然气成藏规律研究”(2021DJ0206)

Integrated Geological Engineering Design for Complex Lithology Low-Permeability Condensate Gas Reservoirs

Ran Lingbo¹, Wang Jia¹, Lu Wenting¹, Nan Rongli¹, Zhang Renping²

1. PetroChina Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China;
2. Xinjiang Jieke Energy Technology Co.,Ltd.,Karamay,Xinjiang 834000,China

Received:2024-01-10 Revised:2024-08-28 Online:2024-12-25 Published:2025-01-22

摘要/Abstract

摘要： 新疆油田前哨2井区侏罗系三工河组复杂岩性低渗透凝析气藏生产过程中,出现反凝析现象,直井试油效果差异大,水平井分段压裂合理施工参数需要进一步优化。针对上述问题,通过地质工程一体化研究方法,建立目的区三维地质及三维地应力模型,基于实际的储层特征、应力特征,研究压裂液注入量对地层压力及温度的影响规律,通过实际相态图判断压裂过程中是否存在凝析现象,并完成水平井压裂方案优化。研究表明:水平井压裂对该凝析气藏开发有正向作用,大量压裂液注入使得地层压力升高,可以抵消温度场降低对凝析油析出的影响。目的层平均渗透率为1.86 mD,储层物性好,水平井压裂射孔簇间距为25 m、单簇加砂量为20.0～25.0 m³左右时能取得较好压裂效果。该研究成果对类似地质特征的凝析气藏快速开发建产有重要的借鉴意义。

关键词: 复杂岩性, 低渗透凝析气藏, 压裂, 温度场, 地质工程一体化

Abstract: The Xinjiang Oilfield saw retrograde condensation in the production of the complex lithology and low-permeability condensate gas reservoir of the Jurassic San'gonghe Formation in the Qianshao 2 Well Area,and significant variability in oil test results between vertical and horizontal wells,which indicates the rational construction parameters for staged fracturing in horizontal wells need further optimization.In order to address these issues,a three-dimensional geological and three-dimensional in-situ stress model of the target area was established through integrated geological engineering research methods.Based on the actual reservoir characteristics and stress characteristics,the influence of fracturing scale on formation pressure and temperature is studied,and the presence of condensation during fracturing is also assessed through actual phase diagrams.In this way,the horizontal well fracturing plan was eventually improved.The study indicates that horizontal well fracturing has a positive effect on the development of this kind of condensate gas reservoir,for a large amount of fracturing fluid injection increases the formation pressure,offseting the influence of temperature field reduction on the condensate oil precipitation.The average permeability of the target layer is 1.86 mD,indicating good reservoir properties.Optimal fracturing results are obtained when the cluster spacing in horizontal wells is 25 m,and the sand addition per cluster is approximately 20.0~25.0 m³.This research provides important references for the rapid development and production building of condensate gas reservoirs with similar geological characteristics.

Key words: complex lithology, low-permeability condensate gas reservoir, fracturing, temperature field, integrated geological engineering

中图分类号:

TE357.1

冉令博, 王佳, 鲁文婷, 南荣丽, 张任平. 复杂岩性低渗透凝析气藏地质工程一体化设计[J]. 特种油气藏, 2024, 31(6): 159-164.

Ran Lingbo, Wang Jia, Lu Wenting, Nan Rongli, Zhang Renping. Integrated Geological Engineering Design for Complex Lithology Low-Permeability Condensate Gas Reservoirs[J]. Special Oil & Gas Reservoirs, 2024, 31(6): 159-164.

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复杂岩性低渗透凝析气藏地质工程一体化设计

Integrated Geological Engineering Design for Complex Lithology Low-Permeability Condensate Gas Reservoirs

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