Development of monitoring of steam chamber for oilsand SAGD product plant

油砂SAGD成品装置蒸汽室监控的研制

• 批准号: 13555279
• 负责人: ASHIDA Yuzuru
• 金额: $ 8.77万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13555279/
• 关键词: Production prediction; Two-phase relative permeability data; Miscibility; Slim tube test; Surface deformation; thermal expansion; Fracture interval; Pressure changing test; SAGD法; オイルサンド; 流体流動シミュレータ; モニタリング; 3相相対浸透率; Stone Model; サイナソイダル・テスト

We developed the simulation technique in order to improve the efficiency in oilsand SAGD production plant.(1) Development of technique of production prediction simulation.(2) Discussion of behavior of miscibility formation by sour gas injection(3) Estimation of surface deformation by steam injection(4) Monitoring of mobiability in fracture type reservoirsAbove studies confirmed that it is very important for SAGD production prediction to select proper three phase relative permeability model.We built the multi-component flow model to simulate slim tube test in order to estimate the minimum miscibility pressure. From the simulation results we are able to evaluate the increasing of efficiency of replacement in slim tubes by increasing of Hydrosulfide. We also find the difference of process of forming miscibility between under a condition of high pressure and under that of high density of hydrosulfide.We are able to evaluate the efficiency of SAGD method by estimating the behavior of steam injected into subsurface by monitoring the surface deformation. To estimate the space and amount of thermal expansion by steam injection, we carried out basic laboratory and numerical experiments.In order to estimate optimal average fracture interval, numerical studies of pressure changing test under controlling of volume and frequency of fluid are carried out. We discussed injection frequency and hydro parameters for pressure changing between injection wells and monitoring wells. This method is applied to test data of sinusoidal fluid volume in the thermal area in Mori, Hokkaido, and to continuous restored data in Fukuro and Sumikawa area in Akita. We found the media between wells is fracture typed and estimated the average fracture interval.

为了提高油砂SAGD生产装置的生产效率，开发了模拟技术。(1)产量预测模拟技术的发展(2)注酸气对易渗透地层的影响规律探讨（3）注蒸汽对地层的影响规律研究（4）裂缝型油藏的可动性监测研究表明，选择合适的三相相对渗透率模型对SAGD产量预测至关重要，本文建立了多组分渗流模型，对细管实验进行模拟，以确定最小可渗透压力。从模拟结果中，我们能够评估通过增加硫化氢来提高细管中的置换效率。同时，我们还发现了高压条件下和高硫化氢浓度条件下形成膨胀性过程的差异，通过监测地表变形来估计注入地下的蒸汽的行为，从而评价SAGD方法的有效性。为了估算注蒸汽热膨胀的空间和量，进行了基础实验和数值实验;为了估算最佳平均裂缝开距，进行了流体体积和频率控制下的压力变化实验数值研究。讨论了注水频率和水力参数对注水威尔斯井与监测威尔斯井压力变化的影响。应用该方法对北海道森热区的正弦流体体积数据进行了检验，并对秋田的海尾和隅川地区的连续恢复数据进行了恢复。发现了威尔斯井间介质为裂缝型，并估算了裂缝的平均间距。

项目成果

Nakao et al.: "Inverse modeling of fractured geothermal reservoirs using pressure interference data"28^<th> Proc. of Workshop on Geothermal Reservoir Engineering. 28. 316-320 (2003)

Nakao 等人：“使用压力干扰数据对裂缝性地热储层进行逆向建模”28^<th>Proc。

Nakao et al.: "Pulse testing analysis for fractured geothermal reservoir-a case Study at the Uenotai geothermal field, Japan"Proc.of the 2nd Int. SYMP. on Dynamics of Fluids in Fractured Rock. A15-A18 (2003)

Nakao 等：“裂缝性地热储层的脉冲测试分析——以日本上野台地热田为例”，第二届国际会议论文集。

Nakao, Ishido: "Hydrological characterization of fractured geothermal reservoir using sinusoidal pressure transient test"6th Proc.of RAEG2001. 96-101 (2002)

Nakao，Ishido：“使用正弦压力瞬态测试的裂缝性地热储层水文特征”6th Proc.of RAEG2001。

中尾, 石戸: "周期的流量による圧力遷移試験法を用いたフラクチャー型地熱貯留層の水理特性評価"日本地熱学会誌. 25. 1-13 (2003)

Nakao，Ishido：“使用周期性流量的压力转换测试方法评估裂缝性地热储层的水力特性”日本地热学会杂志 25. 1-13 (2003)。

Nakao, Ishido: "Characterization of fractured geothermal reservoir using sinusoidal flow-rate pressure interference test"24th Proc.of NZ Geothermal Workshop. 23. 129-134 (2002)

Nakao，Ishido：“使用正弦流量压力干扰测试表征裂缝性地热储层”第 24 届新西兰地热研讨会论文集。