NEW UNDERSTANDING OF GEOTHERMAL RESERVOIR BY ADVANCED MAPPING

通过高级测绘对地热储层的新认识

• 批准号: 08044117
• 负责人: NIITSUMA Hiroaki
• 金额: $ 4.29万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08044117/
• 关键词: ADVANCED MAPPING; AE; HDR; RESERVOIR; MAPPING; AE TOMOGRAPHY; DE-BLURRED; MULTICOMPONENT; AE法; 3軸ダブレット法; AEトモグラフィ法; 坑井内弾性波計測; 地下構造評価; 3軸ダイバーシティ法

1.Installation of a server : A data server was installed in Tohoku University for this Project.2.Joint Experiment : Joint AE measurement experiment was carried out at Soultz HDR site in cooperation with Socomine.3.Project Meetings : Three project meetings were held in Sendai in FY 97 and 98.4.Multicomponent signal processing WG : (a) In-situ detectability of the 3D hodogram was examined by the SPM analysis, (b) A time-frequency coherency analysis using the double 3C detector was investigated, (c) Wavelet spectral matrix analysis was introduced into the AE reflection method, (d) The 3D triaxial drill-bit VSP was investigated, (e) Triaxial AE doublet analysis was applied to Soultz dataset. (f) A software to automatically clusterize AE doublets was developed.5.AB Tomography WG : AE tomography method was applied to Soultz data set.6.Sparse Network WG : The performance of the AE network at Soultz was quantitatively evaluated and application of drill-bit VSP,AE reflection method and doublet analysis was investigated.7.De-blurred mapping WG : Information on fracture network and geologic structure was introduced to the de-blurred mapping.8.AE mechanism WG : Existence of aseismic zone inside the reservoir was found out. Theoretical and experimental study on seismic/aseismic zones was carried out. Spatial and temporal distribution of the doublet were examined.

1.安装服务器：2.联合实验：与Socomine公司合作，在Soultz HDR基地进行了AE联合测量实验。3.项目会议：97和98财政年度在仙台举行了三次项目会议。（a）通过SPM分析检查3D矢端图的原位可检测性。（B）研究使用双3C检测器的时间-频率相干性分析，（c）将小波谱矩阵分析引入声发射反射法;（d）对三维三轴钻头VSP进行了研究;（e）对Soultz数据集进行了三轴声发射偶极子分析。(f)5. AB Tomography WG：将声发射层析成像方法应用于Soultz数据集; 6.稀疏网络WG：对Soultz的声发射网络性能进行了定量评价，并研究了钻头VSP、声发射反射法和双重波分析的应用; 7.去模糊映射WG：在去模糊成图中引入了裂缝网络和地质构造信息。8.声发射机理WG：查明了储层内部存在无隔带。对地震/抗震带进行了理论和实验研究。检查了双峰的空间和时间分布。

项目成果

Asanuma, Takayama, Niitsuma: "Discrimination of coherent waves by a downhole double three componet detector" SEG Expanded Abstracts. (発表予定). (1998)

Asanuma、Takayama、Niitsuma：“井下双三分量探测器对相干波的辨别”SEG 扩展摘要（待提交）。

N.Soma,H.Niitsuma and R.Baria: "Estimation of deeper structure at the Soultz HDR field by means of reflection method using 3C AE as wave source" PAGEOPH. (印刷中).

N.Soma、H.Niitsuma 和 R.Baria：“利用 3C AE 作为波源的反射方法估计 Soultz HDR 场的深层结构”PAGEOPH（正在出版）。

Lesniak and Niitsuma: "Resolution of time-frequency analysis for seismic crosshole measurement" J. Appl. Geophysics. 35. 105-115 (1997)

Lesniak 和 Niitsuma：“地震跨孔测量时频分析的分辨率”J. Appl。

Moriya,Niitsuma,Rutledge,Fehler: "Estimation of regional in-situ stress field controlling subsurface fracture system by using microseismic multiplets" Proceedings of the International Symposium on Rock Stress. 247-252 (1997)

Moriya，Niitsuma，Rutledge，Fehler：“利用微震多次波估计控制地下裂缝系统的区域地应力场”国际岩石应力研讨会论文集。

H.Moriya and H.Niitsuma: "Precise detection of P-wave in low S/N signal by using time-frequency representations of triaxial hodogram" Geophysics.61. 1453-1466 (1996)

H.Moriya 和 H.Niitsuma：“通过使用三轴 Hodogram 的时频表示来精确检测低 S/N 信号中的 P 波”地球物理学.61。