大牛地气田大15井试采研究

Production Test Research of D15 Well in Daniudi Gas Field

 王建淮¹ 曹忠辉¹ 董红坤²

中国石化华北分公司勘探开发研究院 石油大学石油天然气工程学院（北京）

Research Institute of Exploration & Development, North China Company, SINOPEC,
Zhengzhou 450006, China

 　 具有大面积、非均质性强、低丰度、低渗低产特点的大牛地气田 P₁x^{3 -1}气藏,其单井稳定产能、动态储量比例及最终采收率等问题一直为人们所关注。为了解决上述问题,选择具有代表性的、测试资料比较完整的大15井进行研究、探讨。通过修正等时试井、试采评价和单井数值模拟研究,认为该井P₁ x^{3 - 1}段按无阻流量的1 /6配产基本可以稳产;利用压降法和容积法储量计算得到该井动态储量比例为69.83%;利用动态法得到该井段最终采收率为48.62%。为其它井的合理配产、气藏评价和气田开发设计提供了依据。

P1x3-1 reservoir of Daniudi Gas Field has the characters
of large area, strong anisotrop ism, low abundance, low
permeability and low p roductivity. Peop le have been paying
attentions to its key p roblems including individual-well
sustained p roductivity, the p roportion of dynamic reserves and
ultimate recovery factor etc. To solve the p roblemsmentioned
above, the paper studied the data from the D15 wellwhich is
rep resentational to P1 x3-1 reservoir of Daniudi Gas Field and
the well has p lentiful data. It is concluded that this well will
have a sustained p roductivity if it p roduces according to the
1 /6 of QAOF through the study of modified isochronal testing,
evaluation of p roduction test and individual-well simulation;
its p roportion of dynamic reserves is 69.83 percent through
the reserve calculation with p ressure decline method and
volumetric method; its ultimate reserve recovery factor is
48.62 percent with the dynamic method. These conclusions
will p rovide references for reservoir evaluation, gas field
p roduction design and individual-well assignment of other
wells.