火成岩裂缝有效性测井评价

在裂缝性油气藏研究中，裂缝是否有效一直是测井解释的一个难点。测井资料蕴藏着丰富的与裂缝有效性相关的信息，研究认为可从电成像测井、偶极横波成像测井以及双侧向测井资料中挖掘裂缝有效性的响应信息，对火成岩的裂缝有效性进行测井评价。在准噶尔盆地六九区火成岩裂缝性储层中的实际应用，证实了利用偶极横波成像测井中的斯通利波、横波的各向异性并结合电成像测井，可以定性地分析火成岩裂缝的有效性。给出了在缺乏这些新测井资料时，利用双侧向测井资料来评价裂缝有效性的方法。研究结果表明该方法可快速、便捷地确定裂缝的有效性，为油田开发提供依据。

Evaluation of the Fracture Effectiveness of Igneous Rock by Using Logging Data

In the study of fracture reservoirs, determination of effectiveness of fractures is difficulty in well logging interpretation. The rich information, which includes the fracture effectiveness, is extracted from the electricity imaging logging, the dipole shear wave imaging logging, as well as dual laterolog, the fracture effectiveness of Igneous Rock is evaluated by using logging data. Through practical application of fracture reservoir of Igneous Rock in 69th area of the Junggar Basin, it is confirmed by using the Stoneley wave, the shear wave anisotropy of the dipole shear wave imaging logging and unifying the imaging logging to qualitatively analyze the fracture effectiveness of igneous rock to be possible. At the same time, the evaluating method of fracture effectiveness is given by using dual laterolog when these new logging information lacks. Study result shows that these methods can rapidly and expediently determine the fracture effectiveness, and it can provide bases for field development.