检索结果-内蒙古大学图书馆

13th International Field Exploration and development Conference, IFEdC 2023

作者： Xiao, Jian-Qiu Yang, Hui Shao, Qiang Hu, Zhi-Jian Han, Fei Li, Xing-Yue CNPC Engineering Technology R&D Company Limited Beijing China CNPC Oilfield Technology Service Co. Ltd. Beijing China

ISBN: (纸本)9789819702558

In order to improve automation, efficiency, and HSE level during drilling fluid preparation and maintenance of ultra-deep and extra-deep wells, an automatic feeding device for 15000 m class liquid drilling fluid additives was developed. The automatic feeding device of liquid drilling fluid additives is composed of liquid storage tanks, liquid conveying pumps, pipeline control valves and auxiliary devices. The liquid drilling fluid additives can be quickly transported to the liquid storage tanks by the suction pumps for temporary storage. When the drilling fluid is prepared or maintained, the drilling fluid additives can be quickly transported to the mud mixing system by the liquid metering pumps. It enables accurate, automatic, high-speed dosing of liquid additives into the mud mixing system for increased job flexibility and ease of use. The operator controls and monitors operations using human-computer interaction interface mounted on the control cabinet’s touchscreen. Operation parameters are set using the human-computer interaction interface. An information area on the touchscreen displays real-time system status whenever the system is running. The development of the device will create basic conditions for the automatic and intelligent of drilling fluid preparation and maintenance, and improve and the level of on-site HSE. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Tanks (containers)

来源：评论

学校读者我要写书评

暂无评论

Study and Application on Expandable Tubular Open Hole Clad technology 11th

Study and Application on Expandable Tubular Open Hole Clad T...

引用

11th International Field Exploration and development Conference, IFEdC 2021

作者： Jia, Tao Zhang, Quan-li Xu, Bing-gui He, Fei Chen, Ying-yan CNPC Engineering Technology R&D Company Limited Beijing China Southwest Oil and Gas Field Company of PetroChina Chengdu China Chuanxi Drilling Company of CNPC Chuanqing Drilling Engineering Company Limited Chengdu China

ISBN: (纸本)9789811921483

The designed casing program is difficult to meet the requirements of actual drilling in deep or complex wells as the complexity formation pressure system is difficult to predict in the formation. A casing program extended scheme based on expandable tubular open hole clad technology (OHC) is proposed in order to solve the sudden complex pressure system formation or severe leakage formation in the deep well or complex well drilling. The technical principle and characteristics of OHC are elaborated and the key techniques and parameters are analyzed in this paper. The macro and micro performance tests and evaluation methods of the high-performance expandable tube after expansion are proposed and then the safety application boundary of the high-performance expandable tube is confirmed. Field application of OHC was carried out in Ning X well which is a shale gas well in southwest oil and gas field in dec 2020. The purpose of the installation was to clad the 8–1/2 in. hole section with severe leakage, solve the drilling problems caused by the insufficient design casing program, reduce the non-production time caused by lost circulation, and ensure the safe drilling in pay formation. 2480 feet of 7–5/8 in. expandable tube was set in 8–1/2 in. hole that had been under-reamed. Following the successful expansion of the expandable tube, the drift diameter is 7–1/2 in. The field application indicates that the OHC can effectively clad the complex formation, treat the severe leakage and extend the casing program. The technology provides an effective solution to achieve the goal of safe drilling and exploration and development. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Expandable tubes

来源：评论

学校读者我要写书评

暂无评论

Thickening progression mechanism of silica fume-oil well cement composite system at high temperatures

引用

Petroleum Science 2024年第4期21卷 2793-2805页

作者： Hang Zhang Miao-Miao Hu Peng-Peng Li Guo-Qing Liu Qing-Lu Chang Jie Cao Ming Liu Wen-Hua Xu Xiu-Jian Xia Jin-Tang Guo School of Chemical Engineering and Technology Tianjin UniversityTianjin300350China Zhejiang Institute of Tianjin University Shaoxing312300ZhejiangChina Haihe Laboratory of Sustainable Chemical Transformations Tianjin300192China CNPC Engineering Technology R&D Company Limited Beijing102206China

This work studied the thickening progression mechanism of the silica fume-oil well cement composite system at high temperatures(110-180.C)in order to provide a theoretical guidance for the rational application of silica fume in the cementing *** showed that silica fume seldom affected the thickening progression of oil well cement slurry at 110-120.C,but when temperature reached above130.C,it would aggravate the bulging degree of thickening curves and significantly extend the thickening time,meanwhile causing the abnormal“temperature-based thickening time reversal”and“dosage-based thickening time reversal”phenomena in the range of 130-160.C and 170-180.C *** 130-160.C,the thickening time of oil well cement slurry was mainly associated with the generation rate of calcium hydroxide(CH)*** introduced silica fume would be attracted to the cement minerals'surface that were hydrating to produce CH and agglomerate together to form an“adsorptive barrier”to hinder further hydration of the inner cement ***“adsorptive barrier”effect strengthened with the rising temperature which extended the thickening time and caused the occurrence of the“temperature-based thickening time reversal”*** 170-180.C,the pozzolanic activity of silica fume significantly enhanced and considerable amount of C-S-H was generated,thus the“temperature-based thickening time reversal”vanished and the“dosage-based thickening time reversal”was presented.

关键词： Silica fume Oil well cement Thickening time reversal Pozzolanic reaction Adsorptive barrier CH and C-S-H

来源：评论

学校读者我要写书评

暂无评论

Trend Analysis for Calibrated Active System Volume and differential Flow Significantly reduces False Positive Kick Alarm during drilling

Trend Analysis for Calibrated Active System Volume and Diffe...

引用

2024 SPE Asia Pacific Oil and Gas Conference and Exhibition, APOGCE 2024

作者： ding, danhong Mei, Yunyi Ge, Su Yong, Fengwei Lu, Yaozhong Ge, Yunhua CNPC National Elite Institute of Engineering Beijing China CNPC Engineering Technology R&D Company limited Beijing China CNPC Research Institute of Petroleum Exploration and Development Beijing China Sino Science & Technology Company Limited Israel

ISBN: (纸本)9781959025269

rapid kick detection is an essential part of rig safety. Identifying potential kick events in time is valuable and is an urgent and critical task for rig personnel and remote Operation Support Center(OSC) users. A new monitoring system has been developed by firstly calibrating the active system volume for pipe and cuttings displacement during drilling and then by detecting a statistically significant trend in the observed data rather than to rely solely on absolute values and threshold crossing to maximize the sensitivity whilst minimizing the number of false alarms. More than hundreds of historical kick alarms were reviewed and the corresponding mud logging data before the events occurred were displayed in log format against time for clear identification of anomalies in three different tracks: one track for pit volume, one for flow-in and flow-out, the third hole depth, bit depth and block position. By applying an automated rule-based system, the states of rig activities are also displayed simultaneously by detection of bit movement, pump, rotation status and other elements. It is noticed that the data absolute value, data noise, and rig operations such as sudden string movements and flow transients has significant interference to the detection of kick event and that the differential flow is more sensitive early kick indicator than pit volume in most of the historical cases. A pit volume calibrated for drill pipe and cuttings displacement during drilling and a trend analysis by applying Page-Hinkley method for monitoring both active system volumes and differential flows are established and the monitoring system is updated. The system has been tested and refined with the data flows of the historical cases in labs to maximize the sensitivity whilst minimizing the number of false alarms. A significant reduction of false positive alarms is achieved by reducing triggering of 1-2 alarms per well per week while maintaining a 100% true positive identification rate by compa

关键词： drill pipe

来源：评论

学校读者我要写书评

暂无评论

Effect of Montmorillonite on the Properties of Organic-Inorganic Composite Cross-Linked Polyacrylamide Gel System 13th

Effect of Montmorillonite on the Properties of Organic-Inorg...

引用

13th International Field Exploration and development Conference, IFEdC 2023

作者： Zhang, Shi-Ling Qiao, Yan Ning, Kun Zhang, Yang Shang, Li-Tao Wang, Yan Hou, Teng-Fei Bai, Hao-Li CNPC Engineering Technology R and D Company Limited Beijing China Tarim Oilfield Company of CNPC Xinjiang China

ISBN: (纸本)9789819702633

The organic-inorganic composite cross-linking technology can effectively improve the temperature resistance of polyacrylamide gel systems. However, the effect of adding montmorillonite to the system and its impact on performance has not been studied. By using visual code method, differential scanning calorimetry (dSC), and other methods, the effects of montmorillonite on the temperature resistance, gelation properties, and microstructure of the organic-inorganic composite cross-linking polyacrylamide gel system were investigated. The microstructure of the gel system was analyzed by infrared spectroscopy and scanning electron microscopy (SEM). The results showed that the organic-inorganic composite cross-linking gel with different mass fractions of montmorillonite can effectively form a gel, which covers the three-dimensional network structure and does not damage the original spherical-tree structure. By changing the dosage of montmorillonite, it is found that the strength of the gel system is not only related to the density of the three-dimensional network structure, but also related to the composition of the network structure. The gelation time is approximately 21.0–22.0 h, with strength ranging from H to F level. The gel does not break down after high-temperature aging at 140 ℃ for 120 days, indicating good long-term thermal stability. The peak temperature of the differential scanning calorimetry increases with the increase of montmorillonite mass fraction. When the montmorillonite mass fraction is 2.5%, the peak temperature can reach 181 ℃. Adding montmorillonite can improve the performance of the organic-inorganic composite cross-linking polyacrylamide gel system, and can be used to prepare medium-strength gel systems for high-temperature oil and gas field profile control and water shut-off to further enhance the recovery rate. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Clay minerals

来源：评论

学校读者我要写书评

暂无评论

Characteristics of conicl diamond tooth for breaking hard rock under vibratory percussion 57

Characteristics of conicl diamond tooth for breaking hard ro...

引用

57th US rock Mechanics/Geomechanics Symposium

作者： Ji, ran Shi, Huaizhong Sun, Zhaowei Chen, Han Xiong, Chao Song, Hengyu China University of Petroleum - Beijing Beijing China CNPC Engineering Technology R&D Company Limited Beijing China

ISBN: (纸本)9780979497582

The application of conicl PdC teeth to vibratory percussion drilling technology is expected to break deep hard rock efficiently and improve drilling efficiency. In this paper, the characteristics of conicl diamond tooth cutting and hard rock under percussion are investigated. Firstly, experiments on percussion compression of conicl diamond tooth into the broken rock were carried out to analyse the percussion energy and the characteristics of rock crushing pits. Secondly, a numerical model of the cutting process of conicl diamond tooth under the vibratory percussion was established. Three stages of rock-breaking by conical tooth cutting under high frequency number percussion are analyzed. Stress peaks with percussion of 6 times increased by 36.8% and 25.5% compared with percussion of 0 times and percussion of 3 times. There is the highest point of rock-breaking efficiency between percussion of 3 times and 4 times. Cutting force with percussion amplitude of 1.5mm increased by 42.7% compared with percussion amplitude of 0mm. The rock-breaking specific energy with percussion amplitude of 1.5 mm increased by 32.4% compared with percussion amplitude of 0 mm. This study provides a theoretical basis for the use of conical tooth in PdC drill bits under percussion. © 2023 57th US rock Mechanics/Geomechanics Symposium. All rights reserved.

关键词： rocks

来源：评论

学校读者我要写书评

暂无评论

Study on the research Progress and development Trend of refracturing Technique in Shale Gas reservoirs 11th

Study on the Research Progress and Development Trend of Refr...

引用

11th International Field Exploration and development Conference, IFEdC 2021

作者： Zhou, Yi Yang, Yi Yu, Yong-liang Hu, Xi-hui Guo, Jian-hua Zhu, Ying-jie Wang, Jian-li Yin, Hong-wei CNPC Engineering Technology R&D Company Limited Beijing China Southwest Oil and Gas Field Company of PetroChina Chengdu China

ISBN: (纸本)9789811921483

refracturing technique is a promising means to improve the output and estimated ultimate recovery of shale oil and gas resources, which is an efficient method to recover the productivity of low permeability old wells either. refracturing technique has achieved good results in the development of shale gas wells in North America, which increase the output and decrease the extraction cost significantly of shale gas resources. It is also necessary to improve development efficiency in shale gas of China using the refracturing technique on account of that the defects of unstable and large attenuation of the production are exposed with the further development of shale oil and gas resources in China. The principle and characteristics of refracturing technique are elaborated in this paper. The research progress of refracturing technique is introduced and the theories and applications of conventional refracturing methods like mechanical steering, chemical steering and fiber steering are discussed. The development trend of refracturing technology is also analyzed and the difference on merits and demerits between conventional refracturing methods and advanced methods like the wellbore reconstruction method based on expandable tubular are compared. The conclusions obtained in this paper can provide a theoretical reference for the development of refracturing technique and could provide a technical support for cost decreasing and benefit increasing for the exploration of shale oil and gas resources in China. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Shale gas

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

Studies on Lost Circulation risk of deep Shale Formation Based on Fracture Prediction and rock Mechanical Properties 56

Studies on Lost Circulation Risk of Deep Shale Formation Bas...

引用

56th U.S. rock Mechanics/Geomechanics Symposium

作者： Wen, Bo Wang, Yuan Chen, Gang Zhang, Peiyu Guo, Kaijie Fu, Li Feng, Ming Yang, Henglin Zhong, Chengxu PetroChina Southwest Oil&Gasfield Company Chengdu China CNPC Engineering Technology R&D Company Limited Beijing China

ISBN: (纸本)9780979497575

Lost circulation is a technical problem in drilling engineering, resulting in increased drilling cost and extended drilling cycle. reservoir rocks in Block A of Shale Gas have the characteristics of low porosity and low permeability, strong heterogeneity and fault fracture development. Lost circulation is mainly caused by fracture. Seismic fracture prediction to assess lost circulation risk has limitations. Therefore, it is necessary to study more effective methods of lost circulation risk assessment. In this paper, based on the analysis of lost circulation, seismic prediction on fractures and rock mechanics parameters in block A, a comprehensive evaluation method of lost circulation index is formed by using seismic prediction of the relative degree of fracture development, fracture apparent length and the combination of Young's modulus and Poisson's ratio in 3d attribute modeling, and the classification evaluation standard is established. The method is used to evaluate the lost circulation risk of completion drilling in shale gas well of Block A, and the evaluation results are consistent with the well drilling data. Lost circulation index evaluation method can effectively evaluate the risk of lost circulation in shale formation with low porosity and low permeability, strong heterogeneity and fracture development, which can promote the efficient development of shale gas. © 2022 ArMA, American rock Mechanics Association.

关键词： Forecasting

来源：评论

学校读者我要写书评

暂无评论

development of a Wellbore Stability Prediction Model Using Multiple regression with Missing Core Samples: A Case Study of the Shunbei Oil and Gas Field 57

Development of a Wellbore Stability Prediction Model Using M...

引用

57th US rock Mechanics/Geomechanics Symposium

作者： Chang, Qifan Fu, Yun Zhou, Yitian Zheng, Lihui Li, Jie Jin, Yi China University of Petroleum Beijing Beijing China CNPC Engineering Technology R&D Company Limited Beijing China

ISBN: (纸本)9780979497582

The Shunbei oil and gas field, characterized by its intricate deep fault-karst reservoirs and fractured carbonate lithology, presents formidable challenges to wellbore stability during drilling and completion phases, precipitating adverse events such as wellbore collapse and fluid loss. This study embarks on addressing the paucity of data integral for effective wellbore stability prediction in this region, employing a tripartite methodological approach: identification of pertinent data and influential factors, enhancement of multiple regression accuracy, and selection of controlling factors. The study revealed that the multiple linear regression model delivered the most precise predictions for both the leakage rate and well diameter expansion rate. Crucial factors such as geodetic coordinates, drilling pressure, and azimuth were identified as exerting substantial influence on wellbore stability. By scrutinizing primary controlling factors and underscoring the crucial role of drilling pressure and displacement in averting collapse and leakage, this study provides invaluable insights applicable to actual production settings. This study, while enhancing understanding of wellbore stability through analyzing key factors, does not delve into quantitative control strategies. Nevertheless, it provides a practical framework for better management of wellbore collapse and leakage in Shunbei oil and gas field. © 2023 57th US rock Mechanics/Geomechanics Symposium. All rights reserved.

关键词： Lithology

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：