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大闭环伺服控制随钻智能导向钻井方法

大闭环伺服控制随钻智能导向钻井方法 2024-01-24

关键词:: 随钻测井; 人工智能; 深度学习; 机器学习; 地质导向; 智能钻井; 大闭环伺服控制

深层油气资源量巨大，是全球油气开发的重要方向．随着钻井朝着深层（＞４５００ｍ）和超深层（＞６０００ｍ）发展，地质条件更加复杂，深层钻井泥浆信号传输速率受限，井下随钻测井等数据传输延迟，增加了钻井事故的频率及钻出储层的风险．当前井场智能决策钻井的方法不适用，井下自主智能钻进是未来深层超深层高效钻进的发展方向．本...

作者:: 吴思源,李守定,陈东,李晓,杜爱民,张莹
文件大小:: 3.7 MiB

基于多目标遗传算法的Σ-Δ_MEMS加速度计优化设计[J]. 传感器与微系统

基于多目标遗传算法的Σ-Δ_MEMS加速度计优化设计[J]... 2024-01-24

关键词:: 微机电系统; 多目标遗传算法; 稳定性; 环路滤波器

使用变应力沟槽工艺制造的全桥体硅压力传感器

作者:: 王梦醒,刘丹,熊兴崟,李宗伟,韩可都
文件大小:: 1.0 MiB

4.6GHz高功率微波岩石钻探技术

4.6GHz高功率微波岩石钻探技术 2024-01-24

关键词:: 高功率微波; 电场强度; 烧蚀岩石; 钻探

利用高功率微波加热熔化岩石介质实现地下破岩是全新的钻探技术，其具有快速钻探的潜在优势。为进行4.6GHz高功率微波加热穿透岩石技术研究，分析了微波加热岩石的基本原理和影响介质温升速率的因素，采用多物理场耦合法模拟10kW 功率下的电场分布和介质的温度变化规律，最后在4.6GHz/250kW 实验平台上开展了相关钻...

作者:: 王修昌,赵连敏,吴大俊,胡怀传,程敏,刘胜,周泰安,王健,张立元,吴则革,王晓洁
文件大小:: 1.1 MiB

A Bulk-Type High-Pressure MEMS Pressure Sensor with Dual-Cavity Induced Mechanical Amplification

A Bulk-Type High-Pressure MEM... 2024-01-24

关键词:: Pressure; sensor; piezoresistive; mechanicalamplification; MEMS; silicon; bulk-type; dual-cavity; flip-chip; chip-scale package.

使用双空腔实现机械放大的体硅工艺高压MEMS压力传感器

作者:: 林德泉,周显良,王文
文件大小:: 2.0 MiB

Energetic Electron Acceleration in Unconfined Reconnection Jets

Energetic Electron Accelerati... 2024-01-24

关键词:: acceleration of particles; magnetic reconnection

Magnetic reconnection in astronomical objects such as solar corona and the Earth’s magnetotail theoretically produces a fast jet toward the object (known as ...

作者:: 陈果,符慧山,张莹
文件大小:: 3.6 MiB

Imaging hydraulic fractures of shale cores using combined positron emission tomography and computed tomography (PET-CT) imaging technique

Imaging hydraulic fractures o... 2024-01-24

关键词:: X-ray CT PET-CT Hydraulic fracturing Digital imaging

X-ray Computed Tomography (CT) method is an integral part of hydraulic-fracture imaging, but its application to micro-fractures in cores is limited. This pap...

作者:: 李守定,刘丽楠
文件大小:: 1.2 MiB

Investigation on Automatic Recognition of Stratigraphic Lithology Based on Well Logging Data Using Ensemble Learning Algorithm（利用集合学习算法研究基于测井数据的地层岩性自动识别技术）

Investigation on Automatic Re... 2024-01-24

关键词:: machine learning; nineteenth international joint conference; Upstream Oil & Gas

The automation of lithology identification based on natural gamma, resistivity, neutron density and other well logging data is an important step to perform i...

作者:: 龚珂,叶智慧,陈冬,朱丹丹,王婉婷
文件大小:: 1.1 MiB

Piezoresistive Pressure Sensor with Monolithically Integrated Amplifier Based on Metal-Oxide Transistors

Piezoresistive Pressure Senso... 2024-01-24

关键词:: Pressure sensors; Micromechanical devices; Sensitivity; Loading; Monolithic integrated circuits; Differential amplifiers; Thin film transistors

Presently described is a low-temperature technology for the implementation of circuits based on indium-gallium-zinc oxide (IGZO) thin-film transistors (TFTs)...

作者:: 施闰霄,林德泉,周显良,王文
文件大小:: 512.2 KiB

Realization and Characterization of a Bulk-Type All-Silicon High Pressure Sensor

Realization and Characterizat... 2024-01-24

关键词:: Cavity resonators; Stress; Sensor phenomena and characterization; Silicon; Pressure sensors; Piezoresistive devices

Distinct from conventional diaphragm-type pressure sensors, a silicon-based bulk-type high pressure sensor has been analyzed, realized, and characterized. Ex...

作者:: 陈燕铃,林德泉,陆磊,张德强,郭士超,张轶铭,周显良,王文
文件大小:: 2.4 MiB

天然气水合物开采方法及海域试采分析

天然气水合物开采方法及海域试采分析 2024-01-24

关键词:: 天然气水合物; 开采方法; 海域试采; 相态平衡距; 对流注热降压法

天然气水合物分布广、埋藏浅、清洁无污染、储量巨大，被视为油气领域最有潜力的替代清洁能源。全球目前有５个国家进行了８次天然气水合物试采工作，特别是２０１７年５月中国神狐海域天然气水合物试采取得了巨大成功，创造了产气时间和产气总量两项世界纪录，但是由于天然气水合物特殊的物理力学性质和赋存状态，技术经济开采还面临诸...

作者:: 李守定,孙一鸣,陈卫昌
文件大小:: 4.5 MiB

Combined Tension-Shear Experimental Study of Rock Failure

Combined Tension-Shear Experi... 2024-01-24

关键词:: Rock failure Tension-shear Failure criterionExperimental study

This paper deals with experimental study of rock failure under combined tension-shear condition. Combined achieved using self-developed apparatus. Tension-sh...

作者:: 李守定,刘丽楠,李晓
文件大小:: 1.2 MiB

Automatic Identification of Gas Hydrate Formation using Machine Learning Algorithms（利用机器学习算法自动识别天然气水合物的形成）

Automatic Identification of G... 2024-01-24

关键词:: Ensemble learning; Well logging data; Hydrate recognition; Machine learning

Ensemble learning integrates the results of multiple weak learners through certain rules, so it has better learning effect than single weak learner. As a met...

作者:: 宁禹强,叶智慧,王涵,陈冬,李守定,朱丹丹
文件大小:: 750.7 KiB

Automatic Lithology Identification Based on Machine Learning: A Case Study of TZ4 Well（基于机器学习的岩性自动识别： TZ4 井案例研究）

Automatic Lithology Identific... 2024-01-24

关键词:: Lithology identification; machine learning; sensitivity analysis; prediction accuracy

Lithology identification of hydrocarbon reservoir based on well logging curve is significant for drilling planning and reservoir development. The conventiona...

作者:: 郭斯尧,叶智慧,王涵,陈冬,朱丹丹
文件大小:: 253.4 KiB

利用粒子群算法实现陀螺仪耦合系统动态响应优化

利用粒子群算法实现陀螺仪耦合系统动态响应优化 2024-01-24

关键词:: 陀螺仪耦合系统; 粒子群算法; 响应优化

利用平均法分析半球陀螺仪控制系统,得到通过 PID 模块实现的深度负反馈控制回路设计。根据大机动平台等对陀螺仪系统快速响应的要求,寻求方法对深度负反馈控制的 PID 参数整定以实现输出动态优化。系统中合项的存在是控制参数设计的难点。通过参数变换和输出结果分析,发现系统 PID 参数与系统动态响应之间没有明显的相关...

作者:: 王继寅,薛旭
文件大小:: 2.2 MiB

A Bulk-Type Pressure Sensor with Full-Bridge Implementation Enabled by Stress-Modifying Trenches

A Bulk-Type Pressure Sensor w... 2024-01-24

关键词:: Pressure sensors; Resistors; Micromechanical devices; Sensitivity; Piezoresistive devices; Bridge circuits; Silicon

Incorporating a half Wheatstone bridge consisting of two sensing piezoresistors and two relatively constant reference resistors to measure the biaxial compre...

作者:: 林德泉,王文,周显良
文件大小:: 492.2 KiB

Using Pseudo Electrostatic Spring Constant to Optimize the Electromechanical Sigma-Delta Accelerometer

Using Pseudo Electrostatic Sp... 2024-01-24

关键词:: IEEE SENSORS 2017

Using Pseudo Electrostatic Spring Constant to Optimize the Electromechanical Sigma-Delta Accelerometer

作者:: Xiong Xingyin,Ning Cong,Zongwei Li,Kedu Han et
文件大小:: 556.3 KiB

基于机器学习分类算法的地层水合物识别方法研究

基于机器学习分类算法的地层水合物识别方法研究 2024-01-24

关键词:: 天然气水合物; 机器学习; 地层识别; 测井曲线; 参数优选

天然气水合物是高压低温条件下形成的类冰状结晶的烃类能源，燃值高、储量大，极具开发潜力。基于测井曲线可以识别地层水合物，由于传统的水合物地层识别方法依赖专家判断，效率不高、准确率不高，本文引入多种机器学习算法进行水合物层段识别，根据评价指标准确率、F1 分数、精确度与召回率等参数对预测结果进行评估，优选最佳算...

作者:: 叶智慧,宁禹强,张敏,李晓蓉
文件大小:: 1.8 MiB

220℃高温环形磁通门传感器

220℃高温环形磁通门传感器 2024-01-24

关键词:: fluxgates; high temperature; drilling device; magnetic sensing; ring-core geometry

磁通门传感器是地球物理学磁场勘测的关键设备。在深层钻探等领域，磁通门传感器可能需要在高温下长时间稳定工作。我们提出了一种同心环型磁通门传感器，它能在高达 220 °C. 通过使用铁基纳米晶磁芯、PEEK 结构组件、环氧树脂包裹以及宽带短路工作模式，实现了高温一致性。在高达 220 通过评估阻抗、滞后、磁导率和灵敏...

作者:: 袁恺鑫,杜爱民,赵琳,孙树全,冯晓,张晨浩,张一鸣,秦华峰
文件大小:: 3.8 MiB

Intelligent planning of drilling trajectory based on computer vision（基于计算机视觉的钻井轨迹智能规划）

Intelligent planning of drill... 2024-01-24

关键词:: Automatic well trajectory planning; Computer vision; Smart drilling; Geosteering

The conventional well trajectory design mainly developed from spatial mathematical model e.g. arcs or cylindrical spiral lines method, focusing on seeking op...

作者:: 王涵,陈冬,叶智慧,李军
文件大小:: 8.0 MiB

New insights into the carbonate karstic fault system and reservoir formation in the Southern Tahe area of the Tarim Basin

New insights into the carbona... 2024-01-24

关键词:: Karstic fault system; Fault damage zones; Paleokarst reservoir; Reservoir types; Tarim basin

As worldwide hydrocarbon exploration has extended from shallowly to deeply buried strata, reservoir quality has attracted substantial and persistent interest...

作者:: Xinbian Lu,Yan Wang,Fei Tian
文件大小:: 12.1 MiB