scholarly journals Analysis of methods for assessing the drilling tool performance

2020 ◽  
Vol 177 ◽  
pp. 03003
Author(s):  
Denis Simisinov ◽  
Konstantin Porozhkiy ◽  
Olga Pozdnyakova ◽  
Ivan Zakharov
Keyword(s):  
Correct Choice ◽  
Operational Efficiency ◽  
Technical Level ◽  
Drilling Speed ◽  
Drilling Tool ◽  
Comparative Tests ◽  
Tool Performance ◽  
The Cost ◽  
One Machine

The analysis of methods for assessing the drilling tool performance using various methods was performed. The applicability of the methods was assessed. Methods based on periodic comparative tests were examined in detail. The technical level and operational efficiency of the drilling tool is determined by the resource (tool driftage), drilling speed, durability, power supplied to the bottom of the well. The correct choice of a drilling tool is ultimately determined by economic assessments. The specific drilling costs are proposed to be determined taking into account the cost of one machine hour, the sharpening of crowns and the average mechanical drilling speed.

scholarly journals Epoxy tooling: Technologies, developments, sustainability and future interest to industry 4.0

2021 ◽  
pp. 096739112110598
Author(s):  
Gorka Díez-Barcenilla ◽  
José L Gómez-Alonso ◽  
Koldo Gondra ◽  
Ester Zuza
Keyword(s):  
Industry 4.0 ◽  
Ad Hoc ◽  
Cost Effective ◽  
Smart Manufacturing ◽  
Future Research ◽  
Cooling Channels ◽  
Waste Reuse ◽  
Tool Performance ◽  
Rapid Manufacture ◽  
The Cost

The technology of epoxy tooling, at present under continuous development, is used for the rapid manufacture of cost-effective tools for small batch production. It is a valid alternative with no need for expensive investment in metallic moulds for the development of new products. Current investigations are focused on improvements to the production system, improved tool performance, the cost reduction of moulds and tool manufacturing sustainability. In this paper, both the advantages and the disadvantages of epoxy tooling in injection moulding, wax injection, metal stamping and hot embossing are compared with conventional techniques. Following a brief introduction of rapid tooling technologies, the latest advances of epoxy tooling and their implementation in different manufacturing processes are all analysed. These developments refer to the production of new ad-hoc epoxy composites, increased productivity using conformal cooling channels, the reduction of the tooling manufacturing costs through waste reuse and the emerging industry 4.0 technologies for smart manufacturing and tooling. The main objective is to identify both the challenges facing epoxy tooling techniques and future research directions.

Some Discussions of Virtual Testing of Cutting Tools

2008 ◽  
Author(s):  
Christian E. Fischer
Keyword(s):  
Low Cost ◽  
Cutting Tools ◽  
Accurate Information ◽  
Test Results ◽  
Performance Information ◽  
Workpiece Surface ◽  
Prototype Tool ◽  
Tool Performance ◽  
On Chip ◽  
The Cost

The drive for ever increasing productivity puts continuously increasing demands on cutting tool performance. With the cost of a single prototype tool design near $10,000, the benefits of virtual development are clear. Computer simulation can provide accurate information on chip form, cutting force, temperature, workpiece surface integrity and other vital performance information. Recent advances in simulation technology, combined with ever increasing available of computational power at low cost, have vastly expanded the range of machining applications which can be studied in practical times. This paper examines finite element solver technology, recent research and test results enabling virtual development and prototyping of cutting tools.

scholarly journals Application of Logging While Drilling Tool in Formation Boundary Detection and Geo-steering

Sensors ◽  
2019 ◽  
Vol 19 (12) ◽  
pp. 2754 ◽  
Author(s):  
Gaoyang Zhu ◽  
Muzhi Gao ◽  
Fanmin Kong ◽  
Kang Li
Keyword(s):  
Real Time ◽  
Forward Modeling ◽  
Forward Algorithm ◽  
Drilling Tool ◽  
Line Search Method ◽  
Layered Formation ◽  
Series Of Experiments ◽  
Logging While Drilling ◽  
The Stability ◽  
The Cost

Logging while drilling (LWD) plays a crucial role in geo-steering, which can determine the formation boundary and resistivity in real time. In this study, an efficient inversion, which can accurately invert formation information in real time on the basis of fast-forward modeling, is presented. In forward modeling, the Gauss–Legendre quadrature combined with the continued fraction method is used to calculate the response of the LWD instrument in a layered formation. In inversion modeling, the Levenberg–Marquardt (LM) algorithm, combined with the line search method of the Armijo criterion, are used to minimize the cost function, and a constraint algorithm is added to ensure the stability of the inversion. A positive and negative sign is added to the distance parameter to determine whether the LWD instrument is located above or below the formation boundary. We have carried out a series of experiments to verify the accuracy of the inversion. The experimental results suggest that the forward algorithm can make the infinite integral of the Bessel function rapidly converge, and accurately obtain the response of the LWD instrument in a layered formation. The inversion can accurately determine the formation resistivity and boundary in real time. This is significant for geological exploration.

THE ISSUE OF VALUE IN ECONOMICS: PRACTICAL CONSEQUENCES

2019 ◽  
Vol 6 ◽  
pp. 133
Author(s):  
Dmitry Egorov ◽  
Yulia Michaylova ◽  
Yuriy Dyatlov ◽  
Oksana Makarkina ◽  
Natalia Kolesnikova
Keyword(s):  
Mineral Resources ◽  
Correct Choice ◽  
Economic Consequences ◽  
Philosophical Analysis ◽  
Theoretical Development ◽  
Neoclassical Economics ◽  
Price Vector ◽  
Modern Economy ◽  
Objective Basis ◽  
The Cost

Value is a standard of the cost, a certain common quality, which makes it possible to compare costs of quite different things. This construct probably cannot be operationalized generically, but in the development of theory operationalization is not imperative. Although neoclassical economics rejects this category ultimately, it is possible to demonstrate that this approach can be well adjusted to it. The issue of value is not merely a theoretical one. The purpose of the work is to show that if a feedback through the market must have an objective basis as an initial standard, that is money must have a benchmark, then the correct choice of a monetary benchmark can result in significant positive macro-economic consequences. Methods of research: scientific and philosophical analysis of texts and theoretical development. Conclusions: The idea that the feedback through the market must have an objective basis as an initial standard - that is money must have a benchmark – is not contradictory theoretically and its realization is desirable in practice. An energy monetary benchmark is probably preferable for a modern economy. The energy monetary benchmark can stabilize currency circulation potentially, optimize the price vector and simplify the valuation of mineral resources.

scholarly journals PARTICULAR FEATURES OF CONTRACTUAL INHERITANCE OF LEGAL CLAIMS AND OTHER LIABILITIES

2016 ◽  
pp. 0-0
Author(s):  
Эдвард Пилипсон ◽  
Edvard Pilipson
Keyword(s):  
International Law ◽  
Subject Matter ◽  
Practical Problem ◽  
Correct Choice ◽  
Private International Law ◽  
Legal Regime ◽  
Applicable Law ◽  
The Subject ◽  
The Right ◽  
The Cost

Contractual succession of legal claims and liabilities in administering rules of private international law is a quite complicated practical problem. The correct choice of the applicable law is the priority in this situation. As of today inheritance of movables, including claims, liabilities takes place according to the connecting factors’ rules “lex patriae” and “lex domicilii” which according to the offered assumption, are not adequate in a situation of the inheritance by contract. It is worth mentioning that in some cases the right to claim, liability acquires legal regime called “res in transitu” which requires special succession regime. Secondly, it is necessary to evaluate the subject matter of the contract. Inheritance by contract is mediated by the tools of the contractual right which is based on the concluded contract with the cross material perquisites evaluated in a certain sum. Due to this circumstance the assessment should be accepted as a basis for the contract price. Since in accordance with the current legislation the assessment can be made solely in relation to a constant liability (for example, in the situation with a contract of purchase), in case of a contractual inheritance of legal claims (cession), it is not clear how provisional assessment can be made, as the cost of liabilities can change drastically depending on circumstances in the course of a certain period of time. This article is devoted to the investigation of these problems.

Definitive Dynamic MWD Surveys Generate Rig Time Savings and Flat Time Reductions in the Middle East

2021 ◽  
Author(s):  
Ross Lowdon ◽  
Hiep Tien Nguyen ◽  
Mahmoud ElGizawy ◽  
Saback Victor
Keyword(s):  
Control Analysis ◽  
Drilling Tool ◽  
Wellbore Instability ◽  
3D Space ◽  
Directional Control ◽  
Measurement While Drilling ◽  
Time Savings ◽  
The Difference ◽  
The Cost ◽  
Relative Differences

Abstract Wellbore surveying is a critical component of any well construction project. Understanding the position of a well in 3D space allows for the wells geological objectives to be carried out while safely avoiding other wellbores. Wellbore surveys are generally conducted using a magnetically referenced measurement while drilling tool (MWD) and taken while static, either before, after or sometimes during the connection. The drillstring is often worked to release trapped torque and time is often taken waiting for the survey to be pumped up. All of this consumes rig time and opens the wellbore up to wellbore instability issues. The application of definitive dynamic surveys (DDS) which are static MWD quality surveys taken while drilling and updated continuously. There is no longer a need to stop and take a static survey eliminating MWD surveying related rig time, reducing drilling risks from additional pumps off time and improving TVD accuracy and directional control. The rig time taken for surveying with and without DDS will be compared between similar wells in the field, and detailed analysis of relative tortuosity between DDS and non-DDS wells will also be conducted. Trajectory control analysis will be reviewed by looking at the difference in the number of downlinks between DDS and no DDS wells and also the deviation from the planned trajectory. An overall analysis of on bottom ROP will be made and an analysis as to the relative differences in TVD between static and DDS survey will be carried out. This abstract will outline the rig time and operational savings from DDS, it will detail the surveying time savings, directional control improvements, TVD placement differences to static surveys and provide costs savings as a comparison to previous similar wells. This will be outlined over a number of wells, divided by sections as the wells are batch drilled and provide an insight into the benefits of DDS on a drilling campaign. Some discussion will be made as to the efficacy of the DDS surveys and how their error model has been developed. DDS is a unique and novel way of taking surveys while drilling, providing static MWD quality without the added rig time costs but at a much higher frequency that the typical once a stand survey program. This paper outlines the cost and process savings associated with using the DDS surveys.

scholarly journals Comparative analysis of automated and non-automated production of turbine blades

2016 ◽  
Vol 1 (11) ◽  
pp. 25-31
Author(s):  
В. Полетаев ◽  
V. Poletaev ◽  
Е. Цветков ◽  
E. Tsvetkov
Keyword(s):  
Comparative Analysis ◽  
Gas Turbine ◽  
Turbine Blade ◽  
Turbine Blades ◽  
Efficient Production ◽  
Automated Production ◽  
The Cost ◽  
One Machine

Existing production of turbine blades is arranged on the principle “one machine – one part – one product”. This concept does not meet the requirements of today to ensure the required “price – quality” ratio of the product. The only solution to improve the efficient production to process turbine blades on the base of multifunctional machining centers allows increasing efficiency of turbine blade manufacture, and provides advantages to manufacturers of GTE on the gas turbine markets. Automated production of the turbine blades developed by NPO “Saturn” has greatly enhanced the quality of GTE blade wheel manufacture and reduced the cost of their production.

scholarly journals Condition of banks listed on the Warsaw Stock Exchange during the first 3 months of the pandemic in Poland

2020 ◽  
Vol 2/2020 (14) ◽  
pp. 5-20
Author(s):  
Zbigniew Korzeb ◽  
◽  
Paweł Niedziółka ◽  
Keyword(s):  
Banking Sector ◽  
Stock Exchange ◽  
Operational Efficiency ◽  
Capital Adequacy ◽  
Sharp Drop ◽  
Warsaw Stock Exchange ◽  
Additional Costs ◽  
Small Banks ◽  
The Cost ◽  
Credit Portfolio

The aim of the paper is to assess the condition of commercial banks listed on the Warsaw Stock Exchange after the first three months of the COVID-19 pandemic in Poland. The consolidated results for Q1 and Q2 2020 were used focusing on selected evaluation areas such as: capital adequacy, profitability, liquidity, credit portfolio quality as well as operational efficiency. The authors concluded that as a result of the credit crunch and the retention of previously earned profits, almost every medium (except for mBank SA) and every large bank experienced an increase in capital adequacy ratios. Moreover, the profitability of the banking sector eroded in each group of banks, with the rule that ROE is higher in the group of medium and large banks compared to the small ones. With the exception of Idea Bank SA all banks during the pandemic experienced an improvement in liquidity ratios. There was reported an increase in the cost of risk, with the greatest augmentation in small banks. It is maintained that the larger the bank the lower cost of risk. In almost every institution, the risk is mitigated by an increase in the degree of coverage by provisions for impaired receivables. In small banks there was noticed a deterioration in operational efficiency. In medium and large banks, despite a sharp drop in profits and additional costs associated with the pandemic, the process of efficiency improvement was reinforced.

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