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PISTON AND CYLINDER ASSEMBLY OF A DOWNHOLE TOOL, DOWNHOLE TOOL WITH A PISTON AND CYLINDER ASSEMBLY, AND METHOD OF ASSEMBLING THE PISTON AND CYLINDER

Resumen de: EP4556680A2

The invention relates to a piston and cylinder assembly (12) of a downhole tool (10), and in particular to a piston and cylinder assembly of a rotary steerable tool. The piston (20) has an outer wall (80) which is in direct sliding contact with a wall of the cylinder (12) whereby to provide a solid sealing interface without elastomer seals. The cylinder has a retainer (22) for the piston, the retainer having a plurality of retaining parts, the piston having a plurality of retained parts (72), the retaining parts and the retained parts cooperating to retain the piston in the cylinder. The retaining parts are separated around the cylinder and are separate from the outer wall. The retained parts are separated around the piston and are also separate from the outer wall. The retaining parts are separated by openings which can accommodate the retained parts. The invention avoids the requirement for cross pins or the like to retain the piston in the cylinder and thereby avoids any holes or other discontinuities in the sealing surfaces. The invention thereby separates the function of retaining the piston from sealing the piston to cylinder interface. The invention also relates to a downhole tool with a piston and cylinder assembly.

SYSTEM AND METHOD FOR MONITORING AND OPERATING GROUND-SOURCE HEAT PUMPS

Resumen de: EP4556813A1

A method of operating a thermal system (100) implementing a ground-source heat pump (102) includes receiving design parameters associated with a design of the thermal system (100) and receiving one or more measurement inputs associated with a flow of a thermal fluid through a borefield (108) of a ground heat exchanger (110). The method further includes, based on the measurement inputs and the design parameters, predicting one or more predicted thermal values (162) of the thermal fluid using a forward model (146). The method further includes predicting one or more predicted borefield parameters (160) of the borefield (108) based on inverting the forward model (162). The method further includes monitoring the thermal system (100) based on the predicted borefield parameters (160).

SYSTEM AND METHOD FOR OPERATING GROUND-SOURCE HEAT PUMPS

Resumen de: EP4556812A1

A method of operating a ground-source heat pump (502) includes generating a thermal power based on a thermal communication of the ground-source heat pump (502) with a borefield (508), the thermal power at least partly covering a thermal load of a facility. The method includes receiving a temperature associated with the borefield (508) and controlling the thermal power based on the temperature. The method further includes maintaining the temperature within a temperature range based on controlling the thermal power, wherein the ground-source heat pump (502) is configured to cause the temperature to fall outside of the temperature range at a full capacity of the thermal power.

干热岩压裂模拟实验装置及其测试方法

Resumen de: CN120020522A

本发明公开一种干热岩压裂模拟实验装置，包括压力室、旋转组件、第一加压组件等，压力室安装于所述旋转组件，旋转组件用于驱动压力室转动；第一加压组件设于压力室的外周侧，并与压力室内连通，以用于给压力室提供温度和压力；第三加压组件设于压力室的外周侧，并连通压力室内，以用于冲击岩石样品的裂缝并压裂；成像组件设于旋转组件的外周侧，以用于获取所述岩石样品在受压过程中的图像。本发明技术方案通过对岩石样品进行压裂处理，并且通过成像组件对压裂后的样品重建出岩石样品内部三维结构，进而便于对人工压裂的裂缝进行评价和分析，从而为后续的地热资源持续的开发提供设计支撑。

扶正管柱的作业方法及扶正工具

Resumen de: CN120020309A

本发明为一种扶正管柱的作业方法及扶正工具，其中，扶正管柱的作业方法包括如下步骤：S1、确定扶正环的数量和材质；其中，扶正环包括中心环以及周向间隔设在中心环外壁的多个扶正块；S2、将多个扶正环套设在中心管上，并在相邻两个扶正环之间安装隔环，以组装成扶正工具；S3、将多个扶正工具串接在扶正管柱中并随扶正管柱一同下入井内；待扶正管柱下入到预设位置后，扶正环逐渐膨胀变大，中心环周向膨胀并向外推动各扶正块，以使扶正环坐封在位于扶正管柱外的相应井壁或相应管壁上。本发明能够在坐封前实现管柱的居中，且采用自膨胀式自动调节扶正，适应性更广，可以自动调节扶正高度，并能保证坐封效果更佳。

粗糙裂缝返排出砂与剩余导流能力测试装置及方法

Resumen de: CN120020335A

本发明涉及储层改造水力压裂技术领域，是一种粗糙裂缝返排出砂与剩余导流能力测试装置及方法，前者包括液驱系统、导流系统，导流系统包括导流室，导流室内水平方向设置有可上下移动的上活塞和下活塞，上活塞和下活塞之间形成导流腔，导流室内对应导流腔左端、中部和右端均设置有压力探测点，压力探测点处固定设置有压力探测器，上活塞左端固定设置有用于测定上活塞和下活塞之间距离变化的激光测距仪，导流室左侧设置有温度传感器，液驱系统包括恒压恒流泵和储液罐。本发明的粗糙裂缝返排出砂与剩余导流能力测试装置模拟地层调节真实，对裂缝内残余相分布测试清楚，对压裂后回流过程中的获得的各种数据准确度高，对研究压裂后的返排有重要意义。

一种地热储热耐腐蚀换热装置

Resumen de: CN120008225A

一种地热储热耐腐蚀换热装置，包括换热组件、相变储热单元、防腐处理模块、智能调控模块，所述的换热组件包括上容器、下容器，上容器固定安装于下容器上方，下容器内固定安装数层输送管道，每层输送管道呈S型放置，相邻的上下两层输送管道之间通过连接管道连接，利用超声波的空化效应震落管内附着的污垢，而且联管的转动，带动联管内的介质进行转动，形成涡流，使污垢聚集到中部，避免污垢再次粘附到管道内壁上，实现对管道的清洁，保证装置长期稳定运行，维持高效换热性能。

一种模拟干热岩取热裸眼井壁理化反应装置

Resumen de: CN120007200A

本发明公开了一种模拟干热岩取热裸眼井壁理化反应装置，包括恒温加热水箱，恒温加热水箱通过第一管路与酸碱储水箱连通，第一管路上安装有耐腐蚀泵和截止阀，工业PH计的检测头与恒温加热水箱连接，恒温加热水箱通过第二管路与冲刷装置的入口连通，第二管路上安装有可调增压泵与雷达流速仪，冲刷装置的出口通过第三管路与恒温冷却水箱连通，恒温加热水箱与恒温冷却水箱之间通过第四管路连通；冲刷装置内部圆周分布有四个岩样腔，四个岩样腔之间呈十字结构分布，四个岩样腔用于放置岩样，四个岩样之间围设成一个水流通道，第二管路中的水经过水流通道从第三管路排出，冲刷装置外围缠绕有加温电阻，加温电阻用于对岩样补充热量。

一种可调节供水温度的地热水地热供暖装置

Resumen de: CN120008097A

本发明公开一种可调节供水温度的地热水地热供暖装置，包括供水管和回水管；供水管的进水端连接有地热水供水罐，供水管的出水端连接有分水器；回水管的进水端连接有集水器，回水管的出水端连接有地热水回灌罐；供水管与回水管之间连通有连接管，回水管上安装有比例分流阀，连接管的一端与比例分流阀连通；供水管上沿水流方向依次安装有水泵、流量控制阀、混水罐、水温计和电磁控制阀，水泵上安装有控制器；比例分流阀与混水罐之间安装有流量计；水泵、流量控制阀、水温计、电磁控制阀和比例分流阀均与控制器电性连接。本发明通过散热后的水与高温的地热水进行中和，能够充分利用地热水的热量，地热水的热能利用率高，且减少了地热水的消耗量。

一种耦合地热能的脱硫烟气余热深度回收系统及方法

Resumen de: CN120008063A

本发明公开了一种耦合地热能的脱硫烟气余热深度回收系统及方法，系统包括浆液闪蒸单元、热泵单元和地热水单元；所述浆液闪蒸单元包括闪蒸器，所述热泵单元包括吸收式热泵、第一离心热泵和第二离心热泵，所述吸收式热泵与闪蒸器相连，所述第一离心热泵与第二离心热泵通过浆液换热器与闪蒸器相连；所述地热水单元包括地热水取水井和地热水回灌井，所述地热水取水井经过地热水换热器与第一离心热泵相连，所述地热水回灌井与第二离心热泵相连；本发明通过将地热能利用与浆液闪蒸烟气余热回收技术相结合，将利用完的低温地热水作为额外的冷源，进一步降低闪蒸后浆液的温度，并相应地进一步降低烟气温度，实现烟气余热的深度回收。

防冻胀光伏桩基础和光伏系统

Resumen de: CN120006709A

本发明公开了防冻胀光伏桩基础和光伏系统。防冻胀光伏桩基础包括：桩体；侧面防冻保护层，所述侧面防冻保护层环绕所述桩体设置；表层防冻覆盖层，所述表层防冻覆盖层环绕所述桩体设置，所述表层防冻覆盖层位于所述侧面防冻保护层的上方；和热循环管，所述热循环管环绕所述桩体设置，所述热循环管在内外方向上位于所述桩体与所述侧面防冻保护层之间，其中所述热循环管具有密封的热循环腔，所述热循环腔的下端部位于所述桩体的下端部的下方，所述热循环腔的上端部位于所述侧面防冻保护层的下端部的上方。本发明的防冻胀光伏桩基础具有周围土壤不会冻胀、不承受冻胀剪切力、不会上浮、不消耗外部能源等优点。

一种地热储热智能调控换热装置

Resumen de: CN120008224A

一种地热储热智能调控换热装置，包括注水段、连接段、出水段、地面换热器，连接段连通注水段、出水段，注水段内注入循环介质，循环介质在连接段、出水段、地面换热器中进行循环，出水段内转动安装过滤组件，出水段与地面换热器连接处安装微静电模块，注水段、出水段外周均安装数个加强环，吸附去除通过过滤组件的悬浮物，避免换热通道堵塞，并且通过加强环，能够增加注水段和出水段强度，避免注水段和出水段因土壤挤压发生损坏现象。

一种适用于高速公路的多能耦合新型储能换热系统

Resumen de: CN120016537A

本发明公开了一种适用于高速公路的多能耦合新型储能换热系统，涉及多能源利用技术领域，该适用于高速公路的多能耦合新型储能换热系统包括可再生能源采集模块、多能耦合管理模块及安全控制模块；可再生能源采集模块，用于将预先采集的可再生能源转换为电能；多能耦合管理模块，用于对转换生成的电能进行储存及换热管理，并建立多能耦合调度模型实现可再生能源间的协同分配。本发明提供了适用于高速公路的多能耦合新型储能换热系统，确保在各种条件下都能稳定、高效地收集和利用能源，且通过三种可再生能源在不同条件下的优化互补，以满足高速公路的持续能源需求。

THERMAL REACH ENHANCEMENT STRUCTURES WITH IMPROVED ENERGY TRANSFER

Resumen de: WO2025101536A1

A geothermal well is presented wherein wedge-shaped thermal reach enhancement structures are implemented for improving the recovery of geoheat. The methods of facilitating heat transfer discussed herein reduce, or even entirely avoid, impasses or bottlenecks in thermal energy flux from a geological formation into a working fluid of a heat harvesting system.

PUMPED WATER RETURN UNIT, PUMPED WATER RETURN CONTROL SYSTEM, AND UNDERGROUND HEAT UTILIZATION SYSTEM

Resumen de: WO2025100224A1

This pumped water return unit comprises: a housing that has a flow passage through which pumped water from a well and return water to the well flow, and a branch flow passage; a first flange that is provided at a first end of the housing and has an opening on one end side of the flow passage; a second flange that is provided at a second end of the housing and has an opening on the other end side of the flow passage; a branch flow passage that branches from the flow passage in the housing and communicates with the outside of the housing; and a water injection valve mechanism that is capable of opening and closing the branch flow passage, wherein the branch flow passage branches from the flow passage in the housing and communicates with the outside of the housing, and the water injection valve mechanism is accommodated in a region in which a surface connecting the outer periphery of the first flange and the outer periphery of the second flange constitutes a peripheral surface.

SYSTEM AND METHOD FOR INCREASED HEAT RECOVERY FROM LOW-PERMEABILITY GEOTHERMAL FIELDS

Resumen de: WO2025102043A1

Methods and systems are disclosed for constructing a system for extracting geothermal energy from the subsurface. The method may include obtaining a primary wellbore extending from the surface of the earth and penetrating the subsurface, drilling, using a drilling system, a side¬ track wellbore extending from an intersection depth in the primary wellbore below the surface. The method further includes stimulating a portion of the subsurface lying between the primary wellbore and the side-track wellbore, and inserting a closed-loop flow-path, configured to receive a working fluid, into the primary wellbore. The closed-loop flow-path includes an uphole heat exchanger, a downbore heat exchanger, disposed within the primary wellbore at a depth greater than the intersection depth, and a bidirectional fluid conduit configured to channel cool working fluid from the uphole heat exchanger to the downbore heat exchanger and hot fluid from the downbore heat exchanger to the uphole heat exchanger.

METHODS AND SYSTEMS FOR INSTALLING TUBULARS IN WELLS

Resumen de: WO2025101967A1

A system may include a handling mast (310), a tubular source stack (350), a tubing loader (330), a spider device (501), and a connection device (500). The tubing loader is configured to capture a first HVT (115) from the tubular source stack, load the first HVT into the handling mast, capture a second HVT (114) from the tubular source stack, and load the second HVT into the handling mast. The spider device is configured to grasp the first HVT. The connection device is configured to align a proximal end of the first HVT and a distal end of the second HVT and couple the first HVT and the second HVT to form a tubing string. The handling mast is configured to insert the tubing string into the wellbore.

採放熱ユニット

Resumen de: JP2025075791A

【課題】掘削コスト及び消費電力の削減が可能な採放熱ユニットを提供する。【解決手段】本発明によれば、容器、給水手段、採放熱管及び制御手段を備えた採放熱ユニットであって、前記容器は、地中に配置されるとともに、前記給水手段から供給される水道水が貯留水として貯留可能であり、前記給水手段は、給水弁を備えるとともに、前記給水弁を開くことで前記容器へ前記水道水を給水可能に構成され、前記採放熱管は、前記容器内に配置されるとともに、直接膨張方式の地中熱ヒートポンプ装置の室外熱交換器として機能して、前記採放熱管内を流れる冷媒と前記貯留水とが熱交換するように構成され、前記制御手段は、前記貯留水の水温に基づいて前記給水弁を開き、前記容器へ前記水道水を給水するとともに前記容器内の前記貯留水を排出するように制御する、採放熱ユニットが提供される。【選択図】図１

Grazing structure for poultry farming of eco-friendly constituted to oxygen domm

Resumen de: KR20250067425A

본 발명은 산소돔으로 구성한 친환경 양계 방사구조물에 관한 것으로서, 일정농도 이상의 산소가 유지되는 자연환경 하에서 설치되는 양계 방사구조물에 있어서, 지면에 설치되는 내부지지대 프레임; 상기 내부지지대 프레임의 상부에 세워지는 내부와이어 격자돔; 상기 내부와이어 격자돔의 상부를 덮어 설치되는 내부 비닐돔; 상기 내부지지대 프레임의 바깥둘레에 일정간격을 두고 설치되는 외부지지대 프레임; 상기 외부지지대 프레임의 상부에 세워지는 외부와이어 격자돔; 상기 외부와이어 격자돔의 상부를 덮어 상기 내부 비닐돔과 일정간격의 이격공간을 두고 설치되는 외부 비닐돔; 상기 내부지지대 프레임 및 외부지지대 프레임의 전면에 연결되어 설치되는 출입구; 상기 내부지지대 프레임 및 외부지지대 프레임의 후방에 설치되어 제어장치와 송풍장치를 포함하고 있는 기계실; 상기 내부지지대 프레임 및 외부지지대 프레임의 지하에 매설되어 출입구 및 기계실에 연결되는 지열관; 및 상기 기계실에 연결된 상태에서 지열관의 상부에 매립되어 내부지지대 프레임 및 외부지지대 프레임의 안쪽으로 토출관이 일정간격을 두고 연속적으로 연결된 에어분배관으로 구성하되 상기 지열관을 통해서 공급받는 지열을 이

SYSTEM AND METHOD FOR INCREASED HEAT RECOVERY FROM LOW-PERMEABILITY GEOTHERMAL FIELDS

Resumen de: US2025155165A1

Methods and systems are disclosed for constructing a system for extracting geothermal energy from the subsurface. The method may include obtaining a primary wellbore extending from the surface of the earth and penetrating the subsurface, drilling, using a drilling system, a side-track wellbore extending from an intersection depth in the primary wellbore below the surface. The method further includes stimulating a portion of the subsurface lying between the primary wellbore and the side-track wellbore, and inserting a closed-loop flow-path, configured to receive a working fluid, into the primary wellbore. The closed-loop flow-path includes an uphole heat exchanger, a downbore heat exchanger, disposed within the primary wellbore at a depth greater than the intersection depth, and a bidirectional fluid conduit configured to channel cool working fluid from the uphole heat exchanger to the downbore heat exchanger and hot fluid from the downbore heat exchanger to the uphole heat exchanger.

Method for on Demand Power Production Utilizing Geologic Thermal Recovery

Resumen de: US2025154938A1

Methods for providing on demand power to an end user in a variety of embodiments are disclosed. Closed loop thermal recovery arrangements are disposed within a geologic formation having a predetermined potential thermal output capacity. A power generation device is incorporated in the loop to recover energy. A working fluid is circulated within the loop at varying flow rates to oscillate thermal output about the predetermined potential thermal output capacity, to produce on demand power where the average thermal output may equal the predetermined potential thermal output capacity. Integrations with intermittent renewable energy sources are provided which optimize performance and distribution.

REACCIONES TERMOQUÍMICAS QUE USAN ENERGÍA GEOTÉRMICA

Resumen de: AR131895A1

Un primer aspecto se dirige a un método para producir hidrógeno mediante la división termoquímica de agua incluye inyectar una o más corrientes de alimentación de agua en una cámara de reacción. El método incluye además el uso de calor de una fuente subterránea de calor para realizar la división termoquímica de agua para formar hidrógeno y oxígeno en la cámara de reacción. Los productos formados se extraen posteriormente de la cámara de reacción. Un segundo aspecto se dirige a un sistema de reacción que incluye un pozo que se extiende desde una superficie hacia una fuente subterránea de calor. El sistema de reacción incluye además una cámara de reacción configurada para mantenerse a una temperatura de reacción usando calor de la fuente subterránea de calor. El sistema de reacción incluye además uno o más conductos de entrada. Los conductos de entrada están configurados para proporcionar una o más corrientes de alimentación a la cámara de reacción. El sistema de reacción también incluye conductos de salida configurados para permitir el flujo de una o más corrientes de producto.

一种节能型地源热泵

Resumen de: CN119983601A

本发明公开了一种节能型地源热泵，涉及地源热泵技术领域，包括机座和引水板，所述机座的上方安装有热泵机组。该节能型地源热泵，雨水通过引水板的导流进入蓄水池中，经过滤网过滤大颗粒杂质，雨水通过蓄水池进行收集，电机带动一号搅拌杆旋转的同时，搅拌机构对水体进行均匀搅拌，使得水体温度分布均匀，提高热交换效率，并且一号搅拌杆带动清理推板旋转，将滤网表面的大颗粒杂质推送至收集口，然后大颗粒杂质通过导流板和排出口排放到蓄水池的外部，只通过一个电机驱动，就可以在对雨水中的大颗粒杂质进行过滤和清理时，减少了沉积层的产生，便于雨水流动，也能使储存的雨水温度分布均匀，提高了地源热泵的实用性和工作效率。

一种农村住宅地热梯级利用的供暖系统

Resumen de: CN119983355A

本发明属于新能源开发利用技术领域，尤其涉及一种农村住宅地热梯级利用的供暖系统，包括采水泵，设置在采水井内，采水泵用于采集采水井内的地热水；沉淀塔，与采水泵的出水端连通，沉淀塔用于对采水泵采集的地热水进行过滤沉淀处理；闪蒸换热系统，入口端与沉淀塔连通，闪蒸换热系统用于流通地热水并使地热水与梯级供热系统产生热交换；梯级供热系统，利用与地热水进行热交换获得的热量对室内系统进行供热；热水器；室外水管，梯级供热系统利用与地热水进行热交换获得的热量对室外水管进行保温。本发明可以解决现有地热供暖直接通过板式换热器加热而造成换热器结垢严重、换热效果失效、甚至腐蚀换热器以及回灌的地热尾水温度比较高的问题。

深层地质能源钻采过程井筒内外导热传热实验装置及方法

Nº publicación: CN119985607A 13/05/2025

Solicitante:

中国石油大学（华东）

Resumen de: CN119985607A

本发明公开了一种深层地质能源钻采过程井筒内外导热传热实验装置及方法，属于深层地质能源钻采技术领域，包括模拟井筒；模拟井筒内部设置内管，内管与模拟井筒之间形成环空；内管上端与正循环注入支管、反循环反流支管相连；环空上端与反循环注入支管、正循环反流支管相连；正循环注入支管、反循环注入支管上均设置注入控制阀、注入流量计、注入温度传感器、注入压力传感器；正循环反流支管、反循环反流支管上均设置反流控制阀、反流压力传感器、反流温度传感器；环空远离井口的末端设置有井底环空温度测试仪。本发明能够获取井筒内流体、井筒外地层温度变化的实验数据，为优化深层地质能源钻采技术提供数据支撑。