Characterization of deep geothermal reservoir by the AE reflection method

AE反射法表征深层地热储层

• 批准号: 07455407
• 负责人: NIITSUMA Hiroaki
• 金额: $ 4.86万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07455407/
• 关键词: REFLECTION MEASUREMENT; AE; GEOTHERMAL; DOWNHOLE MEASUREMENT; 3D HODOGRAM; INVERSION; POLARIZATION; MULTICOMPONENT; インバージョン; 坑井内3軸弾性波計測

(a) Field AE measurement : Two field AE measurement was made at Kakkonda Geothermal area, Japan. Downhole single/double point measurement was carried out and AE signals with sufficient quality for AE reflection method was recorded.(b) Detection of reflected waves : A theory to discriminate reflected waves from 3C AE signals was devised. Its performance was examined by simulations and optimum parameters in analysis was found.(c) Estimation of the 3D subsurface structure : An method for inversion of the detected reflected waves were devised based on deffraction migration method.(d) Analysis of field data : AE signals recorded at Kakkonda was analyzed by the new techniques derived throughout this research project. The estimated subsurface structure was compared with other geological information, including logging data, core information and surface survey. The reflection image in Kakkonda by the AE reflection method was considerably consistent with other information.

(A)现场声发射测量：在日本Kakkonda地热区进行了两次现场声发射测量。进行了井下单、双点测量，记录到了符合声发射反射法要求的声发射信号。(2)反射波检测：提出了从3C型声发射信号中区分反射波的理论。通过模拟检验了其性能，找到了分析中的最佳参数。(C)三维地下结构的估计：基于绕射偏移方法设计了一种反演探测到的反射波的方法。(D)现场数据分析：利用整个研究项目中衍生的新技术对Kakkonda记录的声发射信号进行了分析。将估计的地下结构与其他地质信息进行了比较，包括测井数据、岩心信息和地面调查。声发射反射法在Kakkonda的反射图像与其他信息有很好的一致性。

项目成果

N.Soma and H.Niitsma: "Reflection survey for geothermal field using 3C AE as wave source" WS Induced Seismicity. 25-26 (1996)

N.Soma 和 H.Niitsma：“使用 3C AE 作为波源的地热场反射测量”WS 诱发地震。

浅沼,相馬,新妻,バリア: "AE反射法と3軸ドリルビットVSP法によるソルツHDRフィールドの地下構造推定" 日本地熱学会平成8年学術講演会論文集. B12 (1996)

Asanuma、Soma、Niizuma、Barrier：“使用 AE 反射法和 3 轴钻头 VSP 法估算盐 HDR 场的地下结构”日本地热学会 1996 年学术会议记录 B12 (1996)。

N.Soma and H.Niitsuma: "Estimation of deeper structure at the Soultz HDR field by means of reflection method using 3C AE as wave source" PAGEOPH. (in-press). (1997)

N.Soma 和 H.Niitsuma：“使用 3C AE 作为波源，通过反射方法估计 Soultz HDR 场的深层结构”PAGEOPH。

N.Soma and H.Niitsuma: "Identification of structures within the deep geothermal reservoir of Kakkonda field (Japan) by reflection method using acoustic emission as a wave source" Geothermics. 26. 43-61 (1997)

N.Soma 和 H.Niitsuma：“利用声发射作为波源的反射方法识别 Kakkonda 油田（日本）深层地热储层内的结构”地热学。

Nobukazu Soma: "Estimation of deep subsurface structure using 3C reflected AE signal" Proc.6th AE/MS Activity in Geol.Sturuct.and Mater.(発表予定). (1996)

Nobukazu Soma：“使用 3C 反射 AE 信号估计深层地下结构”Proc.6th AE/MS Activity in Geol.Struct.and Mater（待提交）。