DEEPEarth Energy Production Corp.（以下简称“DEEP”或“公司”）宣布，SLB的GeothermEx咨询服务已完成对DEEP地热项目的地球科学和储层工程技术审查。他们的研究结果支持DEEP的开发和运营计划，认为地热资源能够在40年内持续产生热能。

SLB的审查基于DEEP的第一阶段地热试点项目，该项目是一个5兆瓦（季节性波动后平均为4兆瓦）的二元地热发电厂，由2口生产井和2口注入井供应，随后是第二阶段的25兆瓦（季节性波动后平均为20兆瓦）发电厂作为后续扩建。

DEEP预计未来将以25到50兆瓦的增量进行进一步的建设，可能总计达到180兆瓦。第一和第二阶段将为大约25,000户家庭提供基础负荷电力容量。

DEEP进行了地表和地下资源勘探和储层测试活动，以了解项目区域的地热资源及其支持地热发电设施开发的能力。GeothermEx审查和评估了DEEP进行的勘探活动，包括地质学、地球物理学、持续流测试、卤水组成、温度分布和对渗透性的地质控制。

为评估资源支持项目开发计划的能力，GeothermEx利用和更新了DEEP的全场热数值储层模型，以量化各种不确定性对资源长期可持续生产的影响。DEEP的数值模型是在SLBPetrel™ E&P软件平台上创建的，并利用INTERSECT™高分辨率储层模拟器进行流动模拟计算。GeothermEx团队的专家运行了不同的生产速率、注入温度、生产和注入压力、储层渗透率和套管部分的传导热传输速率的敏感性案例。

GeothermEx的评估包括以下结论：

• 我们详细的数值建模分析结果表明，DEEP已经准备了一个谨慎的资源开发和运营计划，以保证项目的整个生命周期内持续产生热能。井场布局采用了3000米的横向井，交替注入井和生产井，相隔500米。鉴于从已经钻入目标砂岩储层（“DEEP Sand”）的井中确定的岩石物理储层特性，这种配置非常适合持续运营。项目设计和井场布局使得能够从DEEP Sand的上下方进行传导热传输，以维持热能产生。DEEP的开发方法也是谨慎的，因为在实施25兆瓦的第二阶段发电厂之前，DEEP将通过运营5兆瓦的第一阶段试点厂获得资源知识。
• 建模结果显示，该项目设计利用流体密度的变化来减少泵送功耗。由于冷却流体的密度较大，项目可以在零井口压力下进行注入，而较高温度（较低密度）的产出流体降低了生产泵送功率需求。
• 对DEEP Sand渗透率进行的敏感性建模运行结果显示，由于来自DEEP Sand上下方的有益传导热传输，井的生产能力变化很小。

SLB的这种尽职调查工作被认为是地热投资的公认标准。GeothermEx已经评估了超过8.5吉瓦的清洁地热电力和超过140亿美元的相关投资。

DEEP对自2013年以来从GeothermEx地热咨询服务获得的建议和指导表示感谢，从早期勘探规划到井设计、井测试、储层建模，现在又得到了资源确认。

“GeothermEx是地热资源评估的黄金标准。这家全球最知名的地热资源咨询和服务公司的积极和全面的审查是我们进入第一个设施建设的重要里程碑，”DEEP的首席执行官KirstenMarcia解释道，并补充说，“DEEP完成的所有钻探、测试、储层建模和井设计工作都将我们带到了这个重要时刻。它使我们对地热资源能够支持第一和第二阶段的开发计划，持续40年的发电有了信心。”

*INTERSECT模拟器是SLB、雪佛龙和道达尔的联合产品。

来源：DEEPEarth Energy Production

DEEPEarth Energy Production Corp.(“DEEP” or “the Corporation”) announces that SLB’s GeothermExconsulting service has completed a geoscience and reservoir engineering technical review of DEEP’s geothermal project. Their findings support the ability of the geothermal resource to sustain thermal energy production for 40 years based on DEEP’s development and operations plan.

SLB’sreview was based on DEEP’s Phase 1 geothermal pilot project, which is a 5 MW nameplate (4 MW average after seasonal fluctuations) binary geothermal plant supplied by 2 production wells and 2 injection wells, followed by a Phase 2 – 25 MW nameplate power plant (20 MW average after seasonal fluctuations) as a later expansion.

DEEPanticipates additional future buildouts in 25 to 50 MW increments, potentially leading to a total of 180 MW for the project. Phase 1 and 2 would provide baseload power capacity for approximately 25,000 homes.

DEEPconducted surface and subsurface resource exploration and reservoir testing activities to characterize the geothermal resource in the Project area and its ability to support the development of geothermal power facilities. GeothermEx reviewed and evaluated the exploration activities undertaken by DEEP, including geology, geophysics, sustained flow testing, brine composition, temperature distribution and geologic controls on permeability.

Toassess the resource’s ability to support the project development plan, GeothermEx evaluated, utilized and updated DEEP’s full-field thermal numerical reservoir model to quantify the impact that various uncertainties may have on the long-term sustainability of production from the resource. DEEP’s numerical model was created in the SLB Petrel™ E&P software platform and utilizes INTERSECT™ high-resolution reservoir simulator to perform the flow simulation calculations. Sensitivity cases were run by the GeothermEx team of experts using different production rates, injection temperatures, production and injection pressure, reservoir permeability and conductive heat transfer rate within the cased portion of the wells.

GeothermEx’sassessment includes the following conclusions:

• The results of our detailed numerical modeling analysis indicate that DEEP has prepared a prudent resource development and operations plan to sustain thermal energy generation for the life of the project. The well field layout has 3,000-metre lateral wells that alternate between injectors and producers and are separated by 500 metres. This configuration is well suited for sustaining operations, given the petrophysical reservoir properties determined from wells that have been drilled into the target sandstone reservoir (the “DEEP Sand”). The project design and well layout enable conductive heat transfer from above and below the DEEP Sand to sustain thermal energy production. DEEP’s development approach is also prudent in that DEEP will gain resource knowledge from operation of the 5 MW Phase 1 pilot plant before implementation of the 25 MW Phase 2 plant.
• The modeling results have shown that the project design takes advantage of changing fluid densities to reduce power consumption for pumping.   The project can sustain injection with zero wellhead pressure because of the greater density of the cooled fluid, while the higher-temperature (lower density) production fluid decreases production pumping power requirements.
• Sensitivity modeling runs on DEEP Sand permeabilities resulted in little variation in well productivity, due to beneficial conductive heat transfer from above and below the laterally continuous DEEP Sand.

Thislevel of due diligence work from SLBis considered a recognized standard for geothermal investments. GeothermEx has evaluated more than 8.5 GW of clean geothermal electricity and more than $14 billion of related investments.

DEEPis grateful for the advice and guidance received from GeothermEx geothermal consulting services since 2013 – from early exploration planning to well design, well testing, reservoir modelling and now resource confirmation.

“GeothermExis the gold standard for geothermal resource evaluation. This positive and comprehensive review by the world’s most established geothermal resource consulting and services firm is a major milestone as we move into construction of our first facility,”explains DEEP’s CEO Kirsten Marcia, adding, “Allthe drilling, testing, reservoir modelling and well design work DEEP has completed has led us to this landmark moment. It provides confidence that the geothermal resource will support the Phase 1 and 2 developments for the forecasted 40 years.”

*TheINTERSECT simulator is a joint product collaboration of SLB, Chevron, and Total.

Source:DEEPEarth Energy Production