西南石油大学学报(自然科学版)

• 石油与天然气工程 • 上一篇    下一篇

DH 气藏残余气饱和度实验研究

李久娣1,胡科2   

  1. 1. 中国石化上海海洋油气分公司,上海浦东200120
    2.“油气藏地质及开发工程”国家重点实验室西南石油大学,四川成都610500
  • 出版日期:2014-02-01 发布日期:2014-02-01
  • 通讯作者: 胡科,E-mail:hooke1987@aliyun.com
  • 基金资助:

    国家科技重大专项“鄂尔多斯盆地大牛地致密低渗气田开发示范工程”(2011ZX05045);“油气藏地质及开发工程”国家重点实验室开放
    式基金(PLN1004)。

Experimental Study of Residual Gas Saturation at DH Gas Reservoir

Li Jiudi1, Hu Ke2   

  1. 1. Shanghai Offshore Petroleum,SINOPEC,Pudong,Shanghai 200120,China
    2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China
  • Online:2014-02-01 Published:2014-02-01

摘要:

DH 气藏目前处于开采中后期,需要开展水驱砂岩气藏采收率标定研究,残余气饱和度是水驱砂岩气藏采收
率标定的重要参数。用单向自发渗吸实验装置,测试了DH 气藏砂岩岩样残余气饱和度。基于实验结果,分析得出岩
样初始含水饱和度的大小会直接影响残余气饱和度的大小,而最大残余气饱和度受孔隙度和渗透率影响较小。实验
测试结果与Land 模型吻合较好,而与Agarwal 模型吻合较差。根据DH 气藏的原始含水饱和度,通过本次实验建立
的原始含气饱和度和残余气饱和度之间的关系,计算得到DH 气藏的残余气饱和度,并用该计算结果简要分析了DH
气藏今后提高天然气采收率的对策。

关键词: 水驱气藏, 采收率标定, 岩芯实验, 自发渗吸, 残余气饱和度

Abstract:

servoir is at the middle-later period of exploitation,calibrating and improving the recovery of the waterdriven
sandstone gas reservoir and adjusting the development plan are very important. Before this,studying the residual gas
can provide an accurate parameter for recovery calibration work. Adopting the co-current spontaneous imbibition experimental
facility we tested the residual gas saturations of the sandstone samples from DH gas reservoir. The results revealed that initial gas
saturation had an important effect on residual gas saturation,and porosity and permeability had a little influence on maximum
residual gas saturation. The experimental results could coincide with Land’s model very well,but not with the Agrawal’s
model. Based on the initial gas saturation of DH gas reservoir to the formula we calculated the residual gas saturation of DH gas
reservoir. And by using the result of residual gas saturation we analyze the countermeasure of enhancing nature gas recovery
of DH gas reservoir in the future.

Key words: r-driven gas reservoir, recovery calibration, core experiment, spontaneous imbibitions, residual gas saturation