岩性油气藏 ›› 2026, Vol. 38 ›› Issue (4): 191–200.doi: 10.12108/yxyqc.20260417

• 石油工程与油气田开发 • 上一篇    

准噶尔盆地莫北凸起侏罗系三工河组凝析气藏精细地质建模方法

丁雅洁(), 李想, 韩子建, 谢磊, 魏璞, 魏婷(), 罗杨, 马鑫兆   

  1. 中国石油新疆油田公司 石西油田作业区， 新疆 克拉玛依 834000
  • 收稿日期:2025-10-30 修回日期:2025-12-09 出版日期:2026-07-01 发布日期:2026-07-06
  • 第一作者:丁雅洁（1992—），女，工程师，主要从事油气田开发方面的研究工作。地址：（834001）新疆维吾尔自治区克拉玛依市克拉玛依区科研生产办公楼E座石西油田作业区。Email：sxytdyj@petrochina.com.cn。
  • 通信作者: 魏婷
  • 基金资助:
    中国石油天然气股份有限公司前瞻性与基础性重大科技项目“凝析油与轻质油形成机制、成藏条件及资源潜力研究”(2021DJ0603)

Fine geological modeling method for Jurassic Sangonghe Formation condensate gas reservoir in Mobei uplift of Junggar Basin

DING Yajie(), LI Xiang, HAN Zijian, XIE Lei, WEI Pu, WEI Ting(), LUO Yang, MA Xinzhao   

  1. Shixi Oilfield Operation District， PetroChina Xinjiang Oilfield Company， Karamay 834000， Xinjiang， China
  • Received:2025-10-30 Revised:2025-12-09 Online:2026-07-01 Published:2026-07-06
  • Contact: WEI Ting E-mail:sxytdyj@petrochina.com.cn;sxytwt1@petrochina.com.cn

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摘要：

低渗凝析气藏开发中后期易出现产能衰减快、凝析油堵塞导致采收率降低等问题。以准噶尔盆地莫北凸起前哨4井区侏罗系三工河组二段一砂体为例，采用多尺度参数融合与井流相态校正相结合的方法，建立了高精度数值模拟模型，开展了剩余气分布预测与挖潜方案评价。研究结果表明：①准噶尔盆地莫北凸起侏罗系三工河组二段一砂体厚度约20 m，平均孔隙度约12%，平均渗透率约1.5 mD，非均质性强且局部连通性差。②通过数据协同约束砂体展布与孔渗参数，结合凝析气井流物组分反演与井底压力耦合，建立“地质-相态-井筒”一体化模型，有效提高了砂体展布与孔渗参数刻画精度，建模物性与实测值相关系数均大于0.99；基于该模型的计算结果与历史凝析气产量拟合精度大于96%，揭示了研究区前哨401井高部位为“含气饱和度高但连通性差”的典型富集剩余气区。③根据剩余气分布识别提出的前哨401井侧钻挖潜方案可新增动用储量0.37×108 m3，日增产能4×104 m3，预测结果显示，如果以5.1%的恒定采气速度，可稳产至2030年。

关键词: 凝析气藏, 低渗透储层, 数值模拟, 地质建模, 剩余气分布, 提高采收率, 三工河组, 侏罗系, 莫北凸起, 准噶尔盆地

Abstract:

In the middle to late stage of low-permeability condensate gas reservoirs development， rapid deliverability decline and reduced recovery due to condensate oil blockage often occur. Taking No. 1 sandbody in the second member of Jurassic Sangonghe Formation in Qianshao 4 well block in Mobei uplift of Junggar Basin as an example， a high-precision numerical simulation model was established by combining multi-scale parameters integration with wellstream phase-behavior correction， and remaining gas distribution prediction and potential-tapping schemes evaluation were conducted. The results show that：（1） The thickness of No. 1 sandbody in the second member of Jurassic Sangonghe Formation in Qianshao 4 well block in Mobei uplift of Junggar Basin is about 20 m，the average porosity is about 12%， the average permeability is about 1.5 mD， with strong heterogeneity and poor local connectivity. （2） Using data collaboration to constrain sandbodies distribution and porosity/permeability parameters， combining fluid composition inversion in condensate gas wells and bottomhole pressure coupling， an integrated model of “geology-phase behavior-wellbore” was established，significantly improving the characterization accuracy of sandbody architecture and porosity/permeability parameters. The correlation coefficients between the modeling porosity/permeability and measured values were greater than 0.99. The fitting accuracy between the calculation results of the model and historical condensate gas production is greater than 96%， revealing that the high part of well Qianshao 401 in the study area represents a typical remaining gas enrichment zone of “high gas saturation but poor connectivity”. （3） Based on remaining gas distribution， the proposed lateral drilling potential-tapping scheme for well Qianshao 401，can provide an additional recoverable reserve of 0.37×108 m3 and increase daily gas production by 4×104 m3. The prediction results suggest that the well can achieve stable production until 2030 if the constant gas recovery rate of 5.1% is maintained.

Key words: condensate gas reservoir, low-permeability reservoir, numerical simulation, geological modeling, remaining gas distribution, enhanced oil recovery, Sangonghe Formation, Jurassic, Mobei uplift, Junggar Basin

中图分类号: 

  • TE319

图1

准噶尔盆地莫北凸起前哨4井区顶面构造（a）和侏罗系岩性地层综合柱状图（b）"

图2

准噶尔盆地莫北凸起前哨401井—前哨4井—前哨402_H井侏罗系三工河组连井对比"

图3

准噶尔盆地莫北凸起前哨4井区侏罗系三工河组二段一砂体孔隙度（a）和渗透率（b）分布特征"

图4

准噶尔盆地莫北凸起前哨4井区侏罗系三工河组二段一砂体厚度等值线"

图5

准噶尔盆地莫北凸起前哨4井区侏罗系三工河组二段一砂体地质-相态-井筒一体化方法流程"

图6

准噶尔盆地莫北凸起前哨4井区侏罗系三工河组二段一砂体多相流闪蒸井底压力计算过程示意图"

图7

准噶尔盆地莫北凸起前哨4井区侏罗系三工河组二段一砂体地质建模孔隙度、渗透率与实测值对比"

图8

准噶尔盆地莫北凸起前哨4井区侏罗系三工河组二段一砂体储层地质建模剖面"

表1

准噶尔盆地莫北凸起前哨4井区侏罗系三工河组二段一砂体油气藏井流物组分"

组分 N2 CO2 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11+
ϕ（组分）/% 1.823 0.086 59.31 3.28 0.512 0.560 0.471 0.373 0.864 3.234 1.029 1.371 27.10

图9

准噶尔盆地莫北凸起前哨4井区侏罗系三工河组二段一砂体储层实验拟合凝析液量结果"

图10

准噶尔盆地莫北凸起前哨4井侏罗系三工河组二段一砂体储层不同测试方法计算井底压力结果"

图11

准噶尔盆地莫北凸起前哨4井区侏罗系三工河组二段一砂体储层地质模型对井底压力及油气产量的历史拟合结果"

图12

准噶尔盆地莫北凸起前哨4井区三工河组二段一砂体储层目前含气饱和度数值模拟"

图13

准噶尔盆地莫北凸起前哨4井区侏罗系三工河组二段一砂体储层预测产气曲线"

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