检索结果-内蒙古大学图书馆

Active control of the fluid pulse based on the FxLMS

Petroleum 2024年第4期10卷 745-758页

作者： Hai Yang Jie Liu Zexing Yang Haibo Liang Lizao Zhang Jialing Zou School of Mechanical and Electrical Engineering Southwest Petroleum UniversityChengdu610500China Chengdu Drainage Co. LtdChengdu610023China CNPC Engineering Technology R&D Company Limited Beijing102200China

In petroleum engineering,the performance of drilling fluid is the key factor affecting the drilling *** fluid rheology can be measured by tube *** pulsation will cause measurement deviation of differential pressure and flow velocity data during measurement,and it accumulates when the flow curve is ***,the accuracy of drilling fluid rheological pipe measurement is seriously *** view of the problem of fluid pulsation can seriously affect the accuracy of tube *** paper proposed an algorithm based on Filtered-x least mean square(FxLMS).First,the active control strategy is studied,the mathematical model of electric regulating valve control is established,the FxLMS algorithm of variable step length is studied,the simulation model of the control system is established,and the control effect of different algorithms is *** dynamic experimental platform of fluid pulse active control for drilling fluid rheological pipe measurement is designed and *** experimental data show that:after active control,the average relative error of drilling fluid shear force decreased by 179.6%,the average relative error of plastic viscosity decreased by 78.1%,and the average relative error of the apparent viscosity decreased by 25.5%.It proves that the active control algorithm can improve the accuracy of tube measurement more effectively.

关键词： drilling fluid Active control Fluid pulsation FXLMS rheology

来源：评论

学校读者我要写书评

暂无评论

A data Augmentation Method of Variable density Logging Image Based on GAN 57

A Data Augmentation Method of Variable Density Logging Image...

引用

57th US rock Mechanics/Geomechanics Symposium

作者： Wang, Z. Song, X.Z. Li, Z. Zhang, Y.L. Yang, X.Y. Pan, T. Zhu, Z.P. Beijing China CNPC Engineering Technology R&D Company Limited China

ISBN: (纸本)9780979497582

In recent years, with the development of artificial intelligence technology, cementing quality evaluation models based on supervised learning algorithms have been gradually proposed and applied. These models automatically evaluate cementing quality by identifying variable density logging images. However, due to the uneven number of training samples (variable density logging images), the accuracy of automatic evaluation models is low, to solve this problem, this paper proposes a Wasserstein distance generation countermeasure network (VdL-WGAN) for variable density well logging images. In VdL-WGAN, the generator network uses reconstruction loss to improve the image generation ability of the model. To evaluate image quality, this paper calculates the PSNr and SSIM values of the generated images and trains the optimal model. After expanding the samples, the intelligent evaluation model of cementing quality is trained to improve the recognition accuracy. The VdL-WGAN proposed in this paper can improve the generation of high-quality virtual samples of logging variable density images, improve the accuracy of the intelligent evaluation model of cementing bond quality, and achieve the effect of data expansion. © 2023 57th US rock Mechanics/Geomechanics Symposium. All rights reserved.

关键词： Generative adversarial networks

来源：评论

学校读者我要写书评

暂无评论

Innovation of Tubing Conveyed Perforating technology in the Agadem Field, Niger 12th

Innovation of Tubing Conveyed Perforating Technology in the ...

引用

12th International Field Exploration and development Conference, IFEdC 2022

作者： Liu, Qi Li, Wan-Jun Liu, Hui-Feng Wang, Gang Xiao, Yue Engineering Technology R&D Company Limited CNPC Beijing102206 China

ISBN: (纸本)9789819919635

Tubing conveyed perforating technology is the main perforating method used in oil fields because of its unique advantages. For sandstone reservoirs development, the reservoirs alternate with sandstone and mudstone. There are often multiple perforated intervals with mudstone interlayers, ranging from 1-2 m to hundreds of meters, which is not required perforation. For shorter interlayer, usually use space gun to avoid the mudstone layer and transfer detonation wave. Niger is a major oil and gas producer in West Africa. The Agadem, Bilma and Tenere blocks are being explored and developed, and the Agadem field is the largest one among them. According to the logging data, the average oil layer thickness of each well drilled in Agadem is 18-20 m, and the average single oil layer thickness is 2-3 m. It presents typical interbedded form of sand and mudstone. The perforation operations are faced with the problems of multiple layers and large span. For the mudstone interlayer with a span of 10m or more, the sealing reliability of the sealing parts of the space gun is very high, as well as the connection of the detonating cable between the guns and the reliability of the detonating tube. The large span often leads to the failure of detonating cable, and the perforating pipe string of the space gun cannot solve this problem well. It can only run perforating string many times in hole to shoot different zones in one well, which not only increases the operation cost, but also reduces the operation efficiency. In order to solve the above problems, a new type of perforation joint was designed. The joint contained a perforating gun rack, which is used for fastening the joint of the upper perforating gun and the perforating joint. The technical effect is to reduce the tension of the string during running. There are two sealing ring grooving on the tubing transmission perforating multi-stage joint, and the sealing ring is installed before entering the well. The technical effect is to e

关键词： Cost reduction

来源：评论

学校读者我要写书评

暂无评论

Clay-free biodiesel-based drilling fluid suitable for high temperature 8

Clay-free biodiesel-based drilling fluid suitable for high t...

引用

2022 8th International Forum on Manufacturing technology and engineering Materials, IFEMMT 2022

作者： Shi, He Ni, Xiaoxiao Zhang, Jiaqi Cheng, rongchao Yan, Lili Wang, Jianhua Liu, rentong Geng, Yuan CNPC Engineering Technology R&D Company Limited Beijing102206 China

This paper introduces the formation of a clay-free biodiesel-based drilling fluid system. The system uses the biodiesel derived from the transesterification between soybean oil and methanol as the continuous phase, which is environmentally friendly and has an appropriate flow state. In order to inhibit the hydrolysis of the base oil under high temperatures, a small amount of methanol is retained and Lime addition is minimized. Besides, the system also contains a special polyamine-typed rheological modifier instead of organoclay to provide a fragile gel-structure with lower plastic viscosity and higher yield point, thus good for hole cleaning and solid suspension while keeping a higher rate of penetration (rOP). In order to strengthen the plugging and fluid loss control abilities, superfine calcium carbonate and oxidized asphalt are added and obtain a good outcome. Evaluation results showed that the clay-free biodiesel-based drilling fluid exhibits good properties of rheology, filtration, and emulsion stability, with temperature resistance over 200°C, which is suitable for the exploration of unconventional oil/gas restores. © Published under licence by IOP Publishing Ltd.

关键词： Lime

来源：评论

学校读者我要写书评

暂无评论

Latest Technological Progress in drilling and Completion Operations of the Unconventional reservoir in Xinjiang MaHu Oil Field and Key Suggestions for the Next Steps

Latest Technological Progress in Drilling and Completion Ope...

引用

2025 International Petroleum technology Conference, IPTC 2025

作者： Hu, Huaigang Xi, Chuanming Ji, Guodong Zhang, Nan Wu, Qiang Zhuo, Lubin Zou, Lingzhan CNPC Engineering Technology R&D Company Limited Beijing China National Engineering Research Center for Oil Gas Drilling and Completion Technology Beijing China Xinjiang Oilfield Engineering Technology R&D Company Limited Karamay China

ISBN: (纸本)9781959025436

due to the differences in sedimentary environments, compared with the exploitation of unconventional oil and gas resources in the United States and other countries, China has encountered greater difficulties in the drilling and completion processes of unconventional oil and gas. By analyzing the problems faced by drilling and completion in unconventional reservoirs in the MaHu area in recent years, the process of solving the issues and technical progress are summarized to form a technical template for drilling and completion in this area, which can also provide references for the next step to improve the drilling efficiency and reduce development costs. By studying the lateral distribution law of the pore pressure, the placement of the technical casing was optimized to further develop a standard design for the wellbore structure applicable to this area. To adapt to the local environmental protection requirements, high-performance non-sulfonic treatment agents were selected to replace sulfonic treatment agents, and four sets of environmental protection drilling fluid systems were formed. Based on the rock mechanics and field tests, the personalized drill bit is continuously optimized. With the introduction of a rotary steering drilling system and high-performance positive displacement motor (PdM), the rate of penetration (rOP) has been greatly improved. The transformation of horizontal Wells in the target Triassic formation from four types of casing strings with open hole completion + White oil-based/potassium-calcium based polysulfone organic salt drilling fluid to three types of casing strings with 5-inch casing completion + white-oil/potassium-calcium polyamine organic salt drilling fluid, from conventional rotary drilling + roller cone bit to rotary steering system/high-performance PdM +PdC bit, and the horizontal section length increased from 2000m to 2650m. Completion time decreased from an average of 144 days to 72 days. Speak of the Permian formation, the tra

关键词： Oil well completion

来源：评论

学校读者我要写书评

暂无评论

A New Environmental Friendly Oil-Based drilling Fluid 12th

A New Environmental Friendly Oil-Based Drilling Fluid

引用

12th International Field Exploration and development Conference, IFEdC 2022

作者： Zhang, Jia-Qi Tao, Xie Yan, Li-Li Cheng, rong-Chao Wang, Jian-Hua Yang, Hai-Jun Ni, Xiao-Xiao CNPC Engineering Technology R and D Company Limited Beijing China Beijing China

ISBN: (纸本)9789819919635

A rapid evaluation method for the biodegradability of base oil was established. Through the research of the biodegradation law of base oil components, the core treatment agents such as emulsifier and filter loss reduction agent were further selected, and sodium acetate was used instead of calcium chloride in the internal phase to construct a new formulation of environmentally friendly oil-based drilling fluid. The comprehensive performance evaluation shows that the environmentally friendly oil-based drilling fluid system has good performance such as bio-non-toxic, biodegradable, and heavy metal content, etc. The soil is mixed with the oil-based drilling fluid in the ratio of 8:2 by weight, which can ensure normal plant growth and achieve the purpose of resource recycling. With a temperature resistance of 160 ℃ and a density of up to 2.2 g/cm3, the performance can satisfy the construction of shale oil and gas horizontal wells and can be operated in blocks with high environmental requirements. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.

关键词： Biodegradability

来源：评论

学校读者我要写书评

暂无评论

Mechanism of Polycrystalline diamond Compact and diamond Impregnated Cutter Hybrid Bit Composite rock Breaking

引用

Journal of engineering Science and technology review 2023年第2期16卷 189-196页

作者： Yu, Jinping Ji, Guodong Wu, Qiang Wang, Qing Hu, Huaigang CNPC Engineering Technology R&D Co. Ltd Beijing102206 China

rock breaking efficiency of drill bits is an important index for measuring the drilling efficiency in the oil and gas drilling field, and it is influenced by many factors, such as structure and material. This study developed a calculation model and an experimental model of rock breaking of polycrystalline diamond compact (PdC) and diamond impregnated cutter (dIC) hybrid bit to reveal the influence of bit structure and material on tangential force, axial force and wear height. On the basis of the calculation model of the co-rail arrangement of the PdC–dIC hybrid bit and the rock breaking mode, a rock breaking mechanical parameter prediction model and a rock breaking performance test model were established. rock stress calculation method, rock failure criterion, and mechanical specific energy (MSE) calculation method were used to analyze the rock stress and the relationship between MSE and tangential force, axial force, and wear height during combined rock breaking. The accuracy of the model was verified by experiments. results show that the specific work of rock breaking of the PdC-dIC hybrid bit is less than that of PdC, and a reverse nonlinear relationship exists between specific work of rock breaking and wear height. The energy required for hybrid bit to break rock is less than that of PdC bit. A positive nonlinear relationship exists between the energy of PdC-dIC hybrid bit and the wear height, whereas the cutting depth and the wear height show a negative nonlinear relationship. The stress distribution of PdC rock breaking is uniform, and the maximum equivalent stress is up to 104 MPa. The stress distribution of rock breaking of the hybrid PdC-dIC is extremely nonuniform, and stress concentration occurs with a minimum equivalent stress of 84 MPa and a maximum stress of 161 MPa, which is beneficial to rock breaking. rock breaking of PdC-dIC hybrid bit can promote the generation and development of rock cracks, thereby reducing the crushing strength of the rock. The

关键词： rocks

来源：评论

学校读者我要写书评

暂无评论

research on the recognition and Characterization of Fractures in Coal rock Based on CT Scanning

Research on the Recognition and Characterization of Fracture...

引用

International Petroleum and Petrochemical technology Conference 2024, IPPTC 2024

作者： Ye, Zhilin Qu, Shiyuan Liu, Jianquan Gao, Xiang Jin, Yi CNPC Engineering Technology R&D Company Limited China Research Institute of Petroleum Exploration and Development China

Coal rock fractures play a vital role as key channels for gas migration and storage in the exploration and development of coalbed methane. The characteristics of these fractures, such as porosity distribution, specific surface area, and connectivity, directly impact the adsorption, diffusion, and permeability behaviors of coal reservoirs. Therefore, a detailed analysis of coal rock fracture characteristics is vital in assessing the extractability of coalbed methane and during its exploration and development process. Currently, techniques like imaging logging, seismic detection, and micro-CT are employed for characterizing and studying fractures at various scales. Among these, high-resolution non-destructive CT scanning technology, by constructing three-dimensional data models of core samples, enables a quantitative analysis of fracture distribution features and size parameters. Traditional digital image processing methods, such as threshold segmentation and binary segmentation, though advantageous in computational speed, have limitations in the accuracy of fracture identification. With the advancement of artificial intelligence technology, deep learning-based image processing techniques have increasingly become significant tools for fracture detection due to their powerful feature extraction capabilities. This study conducted micrometer-level CT scanning experiments on coal rock samples, using CT image processing technology to construct a digitalized coal rock core model. deep learning methods were applied for precise fracture identification, establishing an appropriate deep learning architecture and optimized parameters for coal rock fracture recognition. Furthermore, this paper provides a detailed quantitative characterization of the precisely identified fractures, offering robust technical support for the exploration and development of coalbed methane. The high-resolution nondestructive CT scanning technology and three-dimensional fracture network reconstruction

关键词： Computerized tomography

来源：评论

学校读者我要写书评

暂无评论

Characterization of carbonate rock fragmentation under torsional impact loading 58

Characterization of carbonate rock fragmentation under torsi...

引用

58th US rock Mechanics / Geomechanics Symposium 2024, ArMA 2024

作者： Xu, Zhaohui Ji, ran Fan, Jinzhao Shi, Huaizhong Fang, Chao Liu, dong Wang, Yongqi Song, Shaobo CNPC Engineering Technology R&D Company Limited China China University of Petroleum Beijing China Daqing Exploratory Drilling Engineering Company China

ISBN: (纸本)9798331305086

In order to study the influence of torsional impact technology on rock stress response, cutting force and other parameters of carbonate rock under different impact amplitude and impact frequency, the crushing test of carbonate rock was carried out by using the method of torsional impact assisted PdC bit, and the single-tooth rock crushing model under torsional impact was established, and the influence of different impact parameters on crushing efficiency was *** results show that under the condition of reasonable selection of torsional impact frequency and amplitude, torsional impact technology can effectively reduce the rock breaking torque and improve the rock breaking *** peak Mises stress increases by 42.3%,and the average cutting force of 1.5 times the amplitude is reduced by 10.6%.The research results are expected to provide a scientific basis for accelerating the drilling rate of carbonate rocks. Copyright 2024 ArMA, American rock Mechanics Association.

关键词： rock mechanics

来源：评论

学校读者我要写书评

暂无评论

LSTM recurrent Neural Network Based Method for Identification of PdC drill Bit Operating Conditions and Its Application

LSTM Recurrent Neural Network Based Method for Identificatio...

引用

International Petroleum and Petrochemical technology Conference 2024, IPPTC 2024

作者： Chen, Chang-Chang Ji, Guodong Lv, Zehao Sun, Yu-Qi Yu, Jinping Zhang, Hong-Yuan CNPC Engineering Technology R&D Company Limited Beijing102206 China PetroChina Oil Gas & New Energies Company China

PdC drill bit underground operating conditions identification is one of of the difficulties during the drilling operation. It is of great significant for the drilling improvement and accurate construction formation to accurately identify the complex operating conditions during drilling the operation such as PdC bit wearing and stick-slip vibration, etc. In this paper, data of relationship between torque, rate of penetration (rOP) signal and weight on bit (WOB), rev were obtained through lab simulation experiment, after which, a relationship database of torque, rOP signal and WOB, rev was established, a single-layer LSTM recurrent neural network (LSTM-rNN) was constructed, the number of neurons, batch size and optimizer type of LSTM layer were optimized. With BPTT algorithm, LSTM model was trained and tested on the training set containing 6000 groups of data, and achieved the goal of identifying the bit operation conditions against the input of WOB, torque, rev and rOP signal parameters. Based on this model, the PdC bit underground operating conditions identification software was compiled, and was connected to the logging unit to realize real-time identification of bit underground operating conditions, and field test application was successfully carried out in Mahu 1 Well region. The research showed that the convergence speed was fast and the time cost was at the lowest when the number of neurons of LSTM model was 50, and that the optimized Adam optimizer model could meet the requirements of convergence speed and prediction accuracy with the lowest loss value. The classification accuracy of this model on the test set reached 94% and the accuracy of the prediction method was also verified by field test application. To sum up, the method of LSTM-rNN based PdC bit underground operating conditions real-time identification can better meet the requirements of accurate identification of PdC bit underground operating conditions in the practical drilling, and has guiding sign

关键词： recurrent neural networks

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：