Application of High Efficiency Speed-Up Drilling Technology in Well W60

2021 ◽  
pp. 263-271
Author(s):  
Yudong Tian ◽  
Jun Li ◽  
Gonghui Liu ◽  
Yue Qi ◽  
Baishan Chen ◽  
...  
Keyword(s):  
High Efficiency ◽  
Drilling Technology ◽  
Speed Up

Research and Application of High Efficiency Drilling Technology in Condensate Gas Field in Bohai Oilfield

2021 ◽  
Author(s):  
Peng Dou ◽  
Xiaocheng Zhang ◽  
Guojie Cui ◽  
Tao Xie ◽  
Guowei Zhu ◽  
...  
Keyword(s):  
Oil And Gas ◽  
High Efficiency ◽  
Production Capacity ◽  
Gas Field ◽  
Technology System ◽  
Drilling Technology ◽  
Target Layer ◽  
Speed Up ◽  
Reservoir Protection ◽  
The Cost

Abstract An oil-bearing structure in the southwest of Bozhong Sag in Bohai Oilfield contains large oil and gas reserves. It will be a key area for Bohai oilfield to increase reserves production. The main target layer in this block is the fractured granite formation in buried hill. Exploration work in this block is faced with many operational problems such as "deep burial, high temperature and high pressure (HTHP), low penetration rate, difficult reservoir protection, and low accuracy interface determination". Through technical research and field practice, aiming at "all well sections drilling rate speed-up, operation safely and efficiently, and releasing production capacity", a set of key technology system suitable for offshore oilfield deep exploration is formed. Since the application of this technology system, it has effectively improved the efficiency of well construction, greatly reduced the cost of exploration and operation, facilitated the discovery of oil and gas in multiple mid-depth strata. It has achieved a good operation effect on social and economic benefit.

scholarly journals Object Tracking Based on Vector Convolutional Network and Discriminant Correlation Filters

Sensors ◽  
2019 ◽  
Vol 19 (8) ◽  
pp. 1818 ◽  
Author(s):  
Yuan Liu ◽  
Xiubao Sui ◽  
Xiaodong Kuang ◽  
Chengwei Liu ◽  
Guohua Gu ◽  
...  
Keyword(s):  
Object Tracking ◽  
Search Strategy ◽  
High Efficiency ◽  
Image Features ◽  
Correlation Filters ◽  
Convolutional Network ◽  
Speed Up ◽  
Online Tracking ◽  
Fast Motion ◽  
Coarse To Fine

Due to the fast speed and high efficiency, discriminant correlation filter (DCF) has drawn great attention in online object tracking recently. However, with the improvement of performance, the costs are the increase in parameters and the decline of speed. In this paper, we propose a novel visual tracking algorithm, namely VDCFNet, and combine DCF with a vector convolutional network (VCNN). We replace one traditional convolutional filter with two novel vector convolutional filters in the convolutional stage of our network. This enables our model with few memories (only 59 KB) trained offline to learn the generic image features. In the online tracking stage, we propose a coarse-to-fine search strategy to solve drift problems under fast motion. Besides, we update model selectively to speed up and increase robustness. The experiments on OTB benchmarks demonstrate that our proposed VDCFNet can achieve a competitive performance while running over real-time speed.

scholarly journals On the history of management of the third stage of labor in Kazan (to the 155th anniversary of the birth of Professor V.S. Gruzdev)

2021 ◽  
Vol 102 (2) ◽  
pp. 249-257
Author(s):  
L A Kozlov
Keyword(s):  
High Efficiency ◽  
Historical Study ◽  
Manual Removal ◽  
The Third ◽  
Obstetrics And Gynaecology ◽  
Third Stage Of Labor ◽  
Third Stage ◽  
Primary Literature ◽  
History Of ◽  
Speed Up

The article aims to show the experience of the Kazan Obstetrics and Gynaecology Clinic named after V.S. Gruzdev for replacing the obstetric operation manual removal of the placenta with other techniques to prevent serious postpartum complications. Research methods the historical study of primary literature sources. Manual removal of the placenta always associated with the risk of infection and developing puerperal sepsis. That is why obstetricians are constantly looking for a replacement for this operation. In 1895, even in the pre-Kazan period of work, professor Gruzdev successfully performed a method of inserting saline into the umbilical vessels to speed-up placental separation in the third stage of labor. While working in Kazan, on his proposal, doctor L.S. Sidorova (1936), and then Professor P.V. Manenkov (1942, 1948, 1955) and doctor M.V. Korotkova (1958) thoroughly studied and implemented the method of Budimilich in the work of the maternity ward of the clinic. This method involves replacing the saline solution with the crude alum solution. The second measure, preventing hemorrhage in the third stage of labor and avoiding manual removal of the placenta, was the successfully testing intravenous pituitrin (oxytocin) injection by Z.N. Yakubova, completed with the defense of her doctoral dissertation (1962). The high efficiency of these methods allowed us to recommend to them for widespread obstetric practice.

scholarly journals High efficiency extractions of V, Cr, Ti, Fe and Mn from vanadium slag by microwave heating

2021 ◽  
pp. 23-23
Author(s):  
B. Tan ◽  
S. Wu ◽  
L.-J. Wang ◽  
K.-C. Chou
Keyword(s):  
High Temperature ◽  
Reaction Time ◽  
Diffusion Process ◽  
Microwave Heating ◽  
High Efficiency ◽  
Conventional Heating ◽  
Vanadium Slag ◽  
Reduction Processes ◽  
Fe And Mn ◽  
Speed Up

The vanadium slag (V-slag) is generated from smelting vanadium titanomagnetite ore, which contains valuable elements, such as V, Ti, Cr, Fe and Mn. The traditional methods were mainly focused on the extractions of V and Cr by oxidation or reduction processes. In the present work, chlorination method was adopted to keep the valence state of each elements as original state. In order to speed up the diffusion of elements and reduce volatility of molten salt, microwave heating has been examined in the current paper. The results indicated that it only took 30 min to chlorinate V-slag at 800 ?C, and the chlorination ratios of V, Cr, Mn, Fe and Ti could reach to 82.67%, 75.82%, 92.96%, 91.66% and 63.14%, respectively. Compared with the results by conventional heating for 8 h, this extraction rate by microwave heating shows greater advantages. In addition, microwave heating can reduce effectively volatilization of AlCl3 by shortening the reaction time. The volatilization ratio of AlCl3 in this microwave heating was 3.92% instead of 8.97% in conventional heating (1h). The mechanism of efficient chlorination can be summarized as the enhancement of ions diffusion process and enhanced chemical reaction due to local high temperature.

On the experimental lead-cooled installation

2020 ◽  
pp. 185-192
Author(s):  
N. V. Aleksandrov ◽  
Ye. D. Blank ◽  
A. D. Kashtanov ◽  
V. V. Stepanov ◽  
V. V. Lemekhov ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
High Efficiency ◽  
High Reliability ◽  
Liquid Lead ◽  
Extensive Experience ◽  
Technical Parameters ◽  
Large Structures ◽  
Speed Up ◽  
Coolant Circulation

Extensive experience in operating nuclear power plants convincingly proves that fast liquid metal cooled reactors are among the most promising. The advantages of using liquid lead coolants in nuclear power industry are shown. In Russia, lately, much attention has been paid to the natural safety of fast reactors. At the stage of testing materials for components of reactor plants, a number of problems arose for basic systems. An experimental lead-cooled installation was developed for testing large structures, continuous monitoring and maintaining specified technical parameters. For reliable coolant circulation (lead coolant circulation speed up to 200 kg/s), a magnetohydrodynamic pump (MHD pump) has been developed, which is distinguished by high efficiency and reliability, it is also ease in operation and maintenance. Currently, the experimental setup is successfully used in scientific research of materials for RU BREST-OD-300. All its systems showed high reliability, maintainability and the possibility of further modernization.

scholarly journals Early Assessment of Response to Radiofrequency Ablation With CT Perfusion Imaging in Rabbit VX2 Liver Tumor Model

2021 ◽  
Vol 11 ◽  
Author(s):  
Xiaofei Yue ◽  
Xiangjun Dong ◽  
Mengting Huang ◽  
Hongli Yang ◽  
Kun Qian ◽  
...  
Keyword(s):  
Radiofrequency Ablation ◽  
High Efficiency ◽  
Liver Tumors ◽  
Ct Perfusion ◽  
Early Stage ◽  
Liver Perfusion ◽  
Tumor Model ◽  
Diagnostic Value ◽  
Early Assessment ◽  
Speed Up

ObjectivesTo discriminate viable tumors from benign periablational enhancement (BPE) in early stage after radiofrequency ablation (RFA) is a major confounding problem. The goal of this study is to evaluate quantitative assessment and diagnostic value of CT perfusion between viable tumors and BPE after RFA in the rabbit liver VX2 tumor model, with pathological results as the standard.MethodsTwenty-eight VX2 liver tumors were treated with RFA, on days 1, 3, 7, and 14, seven rabbits were randomly chosen for CT perfusion and performed pathology examinations immediately. The perfusion parameters along with the profile of time-density curves (TDCs) and pseudo-color images of the parameters were observed in both BPE and viable tumors, then compared with the pathology results. The perfusion parameters included blood flow (BF), blood volume (BV), time to peak (TTP), permeability (P), arterial liver perfusion (ALP), portal venous perfusion (PVP) and hepatic perfusion index (HPI).ResultsA total of 26/28 rabbits successfully underwent CT perfusion, while 6/26 lesions were confirmed to be viable tumors. The TDCs of BPE were mainly speed-up platform curves (15/26), while the viable tumors showed mainly speed-up speed-down (3/6) and speed-up platform (2/6) curves. The PVP values were significantly higher, and the HPI values were significantly lower for BPE at all time points than viable tumors (P < 0.05). Both of PVP value and HPI value have high efficiency for the differential diagnosis of the viable tumors and BPE at each time point. These characteristics of CT perfusion parameters were consistent with pathological changes.ConclusionsThe TDCs, PVP and HPI have the potential to indicate BPE and viable tumors effectively early after RFA treatment, the results were highly consistent with pathology. CT perfusion has advantages with great efficacy in monitoring the therapeutic effect early after RFA treatment.

scholarly journals Controlled deep perforation by radial drilling of channels with the "Perfobur" technical system to intensify the reservoir inflow

2021 ◽  
Vol 3 (2) ◽  
pp. 99-110
Author(s):  
A. I. Bashirov ◽  
I. R. Galas ◽  
I. A. Лягов ◽  
M. F. Nazyrov
Keyword(s):  
High Efficiency ◽  
Carbonate Reservoir ◽  
Technical System ◽  
Reservoir Properties ◽  
Close Proximity ◽  
Oil Flow ◽  
Drilling Technology ◽  
Water Cut ◽  
Radial Drilling ◽  
Actual Trajectory

The paper presents a technology for controlled deep penetrating perforation using the Perfobur technical system to intensify inflow by drilling radial channels 69 mm in diameter, up to 25 metres in length. This technology was first applied to a carbonate reservoir in the Bashkirian tier, characterised by high heterogeneity and close proximity of bedrock water. An adjacent well, close to the acid fracture well, with identical reservoir properties, was selected. Well "A" was acid fractured and well "B" was drilled using Perfobur technology with two directional channels, each 14 metres in length. In well "B", after drilling the channels, hydrochloric acid solution was injected through a special hydromonitor nozzle at two points. A total of 48 m3 of acid was injected into the "B" well. Comparing the results of well "B" with the well where the hydrofracturing was performed allow speaking about high efficiency of the controlled radial drilling technology. The ability to predict the channel trajectory, knowledge of its actual trajectory in combination with acid treatment of the reservoir using hydromonitor nozzle at a considerable distance from the reservoir allows achieving a significant increase in oil flow rate with lower water cut of the produced oil.

An Efficient Non-Parametric Statistical Test for Assessing Some Treatment Methods of Clinical Data

2021 ◽  
pp. 2142001
Author(s):  
Mahmoud Mansour ◽  
Mohamed Aboshady
Keyword(s):  
High Efficiency ◽  
Statistical Tests ◽  
Statistical Test ◽  
Treatment Methods ◽  
Wolfram Mathematica ◽  
Rapid Spread ◽  
Speed Up ◽  
Parametric Statistical Test ◽  
The Right ◽  
Mathematica Software

The recent rapid spread of deadly epidemics have precipitated an urgent need to speed up the development of different treatments, as well as methods of evaluating their efficacy. The first step towards this is the collection of data relating to the cure rate in groups of patients who have had different treatments applied to them. As most of the available data in these cases is random, it is now the role of statisticians to provide efficient statistical tests to assess the treatment methods through the data. This research aims to provide a new statistical test with high efficiency to reach the right decision with accurate results as quickly as possible using parallel computing algorithms through Wolfram Mathematica software.

scholarly journals Fast multidimensional ensemble empirical mode decomposition for the analysis of big spatio-temporal datasets

2016 ◽  
Vol 374 (2065) ◽  
pp. 20150197 ◽  
Author(s):  
Zhaohua Wu ◽  
Jiaxin Feng ◽  
Fangli Qiao ◽  
Zhe-Min Tan
Keyword(s):  
Time Series ◽  
Empirical Mode Decomposition ◽  
High Efficiency ◽  
Function Analysis ◽  
Ensemble Empirical Mode Decomposition ◽  
Local Analysis ◽  
Mode Decomposition ◽  
Speed Up ◽  
Non Local ◽  
Spatio Temporal

In this big data era, it is more urgent than ever to solve two major issues: (i) fast data transmission methods that can facilitate access to data from non-local sources and (ii) fast and efficient data analysis methods that can reveal the key information from the available data for particular purposes. Although approaches in different fields to address these two questions may differ significantly, the common part must involve data compression techniques and a fast algorithm. This paper introduces the recently developed adaptive and spatio-temporally local analysis method, namely the fast multidimensional ensemble empirical mode decomposition (MEEMD), for the analysis of a large spatio-temporal dataset. The original MEEMD uses ensemble empirical mode decomposition to decompose time series at each spatial grid and then pieces together the temporal–spatial evolution of climate variability and change on naturally separated timescales, which is computationally expensive. By taking advantage of the high efficiency of the expression using principal component analysis/empirical orthogonal function analysis for spatio-temporally coherent data, we design a lossy compression method for climate data to facilitate its non-local transmission. We also explain the basic principles behind the fast MEEMD through decomposing principal components instead of original grid-wise time series to speed up computation of MEEMD. Using a typical climate dataset as an example, we demonstrate that our newly designed methods can (i) compress data with a compression rate of one to two orders; and (ii) speed-up the MEEMD algorithm by one to two orders.

scholarly journals Progress and development of particle jet drilling speed-increasing technology and rock-breaking mechanism for deep well

2021 ◽  
Author(s):  
Tiancheng Fang ◽  
Fushen Ren ◽  
Hanxu Liu ◽  
Yuan Zhang ◽  
Jianxun Cheng
Keyword(s):  
Constitutive Model ◽  
High Efficiency ◽  
Rock Breaking ◽  
Drilling Speed ◽  
Speed Increase ◽  
Deep Well ◽  
Jet Impact ◽  
Drilling Technology ◽  
Breaking Mechanism ◽  
Hard Formation

AbstractIncreasing drilling speed and efficiency of hard formation for deep and ultra-deep well is one of the international recognized drilling problems and key technologies to be tackled urgently. Particle jet impact drilling technology is an efficient non-contact rock-breaking method to overcome slow drilling speed, which has great development and application potential in drilling speed-increase of hard formation and deep well. High efficiency drilling technology and rock-breaking speed-increase mechanism in high temperature, high pressure and high hardness formations of deep and ultra-deep wells were mainly focused and keynoted in this paper. With extensive investigation of domestic and foreign literature, the working principle, key technical devices, deep-well-rock mechanical characteristic, unconventional constitutive model and rock-breaking mechanism of particle jet impact drilling technology were analyzed, which proved the feasibility and high efficiency for deep and hard stratum, and also, dynamic failure mechanism of rock needs to be elaborated by constructing the constitutive model with high temperature and pressure. Meanwhile, the major problems to be solved at present and development direction future were summarized, which mainly included: miniaturization of drilling equipment and individualization of drilling bit; optimization of jet parameters and the evaluation method of rock-breaking effect; establishment of mechanical property and unconventional constitutive model of deep-well-rock; rock-breaking mechanism and dynamic response under particle jet coupling impact. The research can help for better understanding of deep-well drilling speed-increasing technology and also promote the development and engineering application of particle jet impact drilling speed-increase theory and equipment.

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