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PRODUCING RENEWABLE ENERGY UNDERWATER

Absstract of: US2025228135A1

Systems and methods for generating electric power underwater using a thermoelectric generator. At least one wellhead upstream of the generator conveys a flow of fluid at an elevated temperature from a subterranean source to the generator. In one arrangement, at least one other wellhead downstream of the generator conveys to a subterranean formation substantially all of the fluid that flows from the source through the first wellhead. The source and the formation may be a common reservoir, allowing closed-loop operation in which the fluid is recirculated, reheated and repressurised by geothermal energy. In another, open-loop arrangement, the generator cools the fluid by transformation of heat energy to electrical energy and then outputs the cooled fluid to a surface facility. The generator may cool the fluid to just above or below the wax appearance temperature. Cold-flow processing may be used to convey the fluid downstream of the generator under cold-flow conditions.

Method for constructing a pipeline portion of a pipe system, and pipeline portion of a pipe system in a heating network

Absstract of: US2025224049A1

In a method for setting up a pipeline section of a pipe system in a heat network, which is provided for transferring a heat transfer fluid between a heat provider and a heat consumer, the pipeline section is subdivided into segments in a segmentation step. A segment characteristic variable is determined for each segment based on a physical soil characteristic variable. The determined segment characteristic variables of two adjacent segments differ by more than a predefined segment characteristic variable difference value. In a bedding determination step, segment embedding of a pipeline segment, introduced in the trench in this segment, in a water-permeable segment bedding material is predefined for each segment such that a heat loss of the heat transfer fluid transferred in the pipeline segment, which is averaged over the segment and is based on a unit of length, is lower than a predefined heat loss limit value.

METHODS AND SYSTEMS FOR INCREASING HEAT TRANSFER IN GEOTHERMAL SYSTEMS

Absstract of: US2025224151A1

Methods, systems, and compositions of matter for increasing heat transfer are disclosed herein. A slurry may include a quantity of a thermally conductive material configured to transfer heat. A slurry may include a quantity of a proppant configured to prop open one or more fractures. A slurry may include a quantity of a slurrying agent configured to suspend the quantity of the thermally conductive material within the quantity of the slurrying agent. The slurry is configured to preserve permeability within one or more fractures and facilitate a transfer of heat.

METHODS AND SYSTEMS FOR INCREASING HEAT TRANSFER IN GEOTHERMAL SYSTEMS

Absstract of: WO2025147719A1

Methods, systems, and compositions of matter for increasing heat transfer are disclosed herein. A slurry may include a quantity of a thermally conductive material configured to transfer heat. A slurry may include a quantity of a proppant configured to prop open one or more fractures. A slurry may include a quantity of a slurrying agent configured to suspend the quantity of the thermally conductive material within the quantity of the slurrying agent. The slurry is configured to preserve permeability within one or more fractures and facilitate a transfer of heat.

SYSTEM AND METHOD FOR GEOTHERMAL ENERGY PRODUCTION

Absstract of: WO2025147722A1

Systems and processes are disclosed for enhanced geothermal energy production, The enhanced closed-loop geothermal system may include a wellbore, where at least a portion of the wellbore penetrates a geothermal heat source, a closed-loop geothermal system deployed in the wellbore, and a heat-buffer including a heat-buffer material disposed within the portion of the wellbore penetrating the geothermal heat source and accumulate heat when working fluid is not circulating and release it to the closed-loop geothermal system when working fluid is circulated. The closed-loop geothermal system deployed in the wellbore, includes a downhole heat exchanger deployed within the portion of the wellbore penetrating the geothermal heat source, a bidirectional fluid conduit, wherein a first end of the bidirectional fluid conduit is fluidly connected to the downhole heat exchanger, and a heat utilization facility, wherein a second end of the bidirectional fluid conduit is fluidly connected to the heat utilization facility.

FROST-HEAVING-RESISTANT PILE SYSTEM AND CONSTRUCTION METHOD

Absstract of: WO2025146167A1

A frost-heaving-resistant pile system and a construction method. The frost-heaving-resistant pile system comprises a variable-cross-section pile body (1), an upright pile body (2) connected to the bottom of the variable-cross-section pile body (1), and a geothermal pipe (3) pre-buried in the variable-cross-section pile body (1) and the upright pile body (2). At least one variable-cross-section pile body (1) is arranged above the upright pile body (2); the variable-cross-section pile body (1) comprises a truncated cone portion (11) and an inverted truncated cone portion (12); the inverted truncated cone portion (12) is connected to the bottom of the truncated cone portion (11); and the geothermal pipe (3) is connected to a ground source heat pump set. The truncated cone portion (11) is combined with the inverted truncated cone portion (12) to form the variable-cross-section pile body (1), thereby achieving an effect of actively weakening a frost-heaving force, facilitating decomposition and conversion of the force, effectively reducing the frost-heaving effect of frost-heaving shear stress on a pile foundation, and improving the heaving resistance stability of the pile foundation; and the geothermal pipe (3) can effectively heat the variable-cross-section pile body (1) and the upright pile body (2), improving the frost-heaving resistance of the pile body. Such a frost-heaving-resistant pile structure can effectively improve the reliability of a pile foundation in a frozen area

一种多能协同的闭式地热供暖系统

Absstract of: CN120274316A

本发明提供了一种多能协同的闭式地热供暖系统，涉及可再生能源技术领域，上述系统包含闭式地热循环单元、多功能协同单元及控制单元。地热循环单元通过注入井、采出井及嵌入岩体的井下换热结构实现工质循环吸热。协同单元设有并联的工业余热回路、电加热储热回路及热泵机组，热泵一次侧闭环连接采出井与注入井，二次侧连通用户供热管路。控制单元通过路径切换实现两种模式：采暖模式下，热泵机组提温地热工质并联动电加热回路共同供热，工业余热同步补充热能；储热模式下关闭热泵及电加热，利用工业余热工质反向注入采出井进行地热储热。本发明能够兼顾闭式地热供暖系统取热的高效性和热源供给的稳定性。

一种矿区废弃地热井的改造方法及系统

Absstract of: CN120274436A

本发明公开了一种矿区废弃地热井的改造方法及系统，涉及地热资源的开发利用技术领域，包括以下步骤：对矿区的废弃地热井的井口、井壁的裂缝和损坏部位进行密封处理；对密封处理后的废弃地热井井壁安装保温材料；根据废弃地热井的地温梯度和对应的井深选择对应的储热材料，基于废弃地热井的体积获取储热材料的敷设量；将储热材料按照敷设量布置在安装保温材料后的废弃地热井中，在储热材料内壁设置地埋管换热器，将地埋管换热器与地面系统连接。本发明不仅局限于单一的冬季供暖或热水供应，能够提高地热井的能源利用效率，并实现地热资源与可再生能源的有机结合，满足不同领域的多样化需求。

一种用于井群集输及跨季地层储热多功能井口设备

Absstract of: CN120274435A

本发明公开了一种用于井群集输及跨季地层储热多功能井口设备，包括保温内管G1、地热循环供水管道G2、井口设备主体管J2、地热循环回水管道G3、旁通管道G4、井口设备上端盖J1、换热井套管J3、地热循环供水管道压力表P1和地热循环供水管道温度变送器T1、地热循环回水管道压力表P2和地热循环回水管道温度变送器T2以及热计量表HM和储热小功率循环水泵WP、Y型过滤器V1、能量阀V2、地热循环回水管道阀门V3、排污阀V5、地热循环回水管道控制蝶阀V6和视镜V7、旁通管道旁通阀V8、地热循环供水管道控制蝶阀V9、储热循环水泵旁通控制阀V10。本发明能实现多口换热井流量精准输配、流体参数监测、水质观测、测温光纤的柔性密封、确保流体流速的平稳变化。

一种地热井实时数据采集与处理系统及方法

Nº publicación: CN120278497A 08/07/2025

Applicant:

山东省地质科学研究院

Absstract of: CN120278497A

本发明涉及地热井数据处理技术领域，具体为一种地热井实时数据采集与处理系统及方法，所述方法包括：获取处理参数，对处理参数进行特性分析，构建回归模型，基于回归模型构建地热井处理参数之间的动态因果网络；基于因果网络对处理参数进行修正，并对修正后的处理参数进行更新；计算投入成本和能源产出量；获取对投入成本和能源产出量的重要性评分，基于重要性评分计算经济效益指数；获取地热井相关多维数据，计算安全效益指数；基于经济效益指数和安全效益指数，利用分级决策规则对地热井进行控制优化。本发明融合经济效益与安全风险双维度评估，改进地热井评估的片面性；利用分级决策规则，实现精准综合决策，优化决策能力。