scholarly journals Zjawiska chemiczno-technologiczne podczas zabiegu cementowania otworu w aspekcie projektowania rur okładzinowych ze szczególnym uwzględnieniem ich wytrzymałości na zgniatanie i rozrywanie

Nafta-Gaz ◽  
2021 ◽  
Vol 77 (3) ◽  
pp. 187-199
Author(s):  
Wiesław Witek ◽  
◽  
Marcin Rzepka ◽  
Keyword(s):  
Optimal Design ◽  
Outer Diameter ◽  
Drilling Process ◽  
Design Tools ◽  
Complex Issue ◽  
Drilling Technology ◽  
Steel Grades ◽  
Casing Pipe ◽  
Production Tubing ◽  
Selection Of

One of the most important issues that needs to be addressed in the borehole design process is the optimal design of the borehole structure, including the appropriate selection of individual casing columns and their setting given the assumed geological and cementing-technical conditions. Specific geological and technical conditions imply a number of both conditions and constraints. A kind of dimensional unification of pipes adopted by API many decades ago, i.e. a series according to the outer diameter of the pipes, constitutes the main natural constraint. Other elements of this unification, such as a series of steel grades or of classic and PREMIUM thread connections were implemented gradually as drilling technology developed. Regardless of these conditions, one thing always remains the same when designing casing and selecting production tubing, i.e. maintaining the balance between the existing loads acting on the pipes during the drilling process and operation of the borehole and the minimum mechanical strength of the pipes. This article reviews the methods and guidelines for casing pipe designing published by API and of computer programs, including StressCheck, which is currently one of the commonly used pipe design tools. The strength issues discussed in the article refer mainly to the pipe body, ignoring the complex issue of the strength of the thread connections, especially those of PREMIUM type, whose qualification is not subject to API standards, but to the guidelines contained in ISO 13679.

CORPORATE STYLE WITH MEDIA DESIGN TOOLS

2018 ◽  
Author(s):  
Diana Fayvishenko ◽  
◽  
Oksana Melnichenko ◽  
Keyword(s):  
Intangible Asset ◽  
Design Tools ◽  
Market Behavior ◽  
Media Design ◽  
Leading Role ◽  
Mutual Relations ◽  
Selection Of ◽  
Innovative Approaches

In the conditions of high competition of application of innovative approaches and marketing instruments of mediadesign it is laid in philosophy of market behavior as system of practical events that provide basic directions of positioning of company at the market, assist the increase of financial results of activity and selection of potential of competitiveness on the whole. Forming of corporate style in a mediasphere occupies a leading role at present, comes forward as a major intangible asset of enterprise, provides the favourable terms of development at the modern market, is the instrument of expansion of partner mutual relations and connections. The relevance of the chosen topic is that within a single concept and overall plan to influence the minds of consumers, create a positive style of the product or service, the basis for the formation of the company's corporate style are advertising technologies. The article analyzes the main aspects of corporate style formation by advertising and justification of its need to form media design tools, highlights the main directions of development and use of innovative tools to adapt to the modern market. The main aspects of formation of corporate style by advertising means and substantiation of its necessity of formation by tools of media design are analyzed, the basic directions of development and use of innovative tools on adaptation to the modern market are allocated.

Selection of the Optimal Structural Design of a Spar Composite Wing

2021 ◽  
pp. 90-99
Author(s):  
O.V. Tatarnikov ◽  
W.A. Phyo ◽  
Lin Aung Naing
Keyword(s):  
Optimal Design ◽  
Element Analysis ◽  
Minimal Weight ◽  
Wing Structures ◽  
Optimization Parameters ◽  
Nonlinear Static ◽  
Wing Structure ◽  
Pareto Method ◽  
Selection Of ◽  
Composite Wing

This paper describes a method for optimizing the design of a spar-type composite aircraft wing structure based on multi-criterion approach. Two types of composite wing structures such as two-spar and three-spar ones were considered. The optimal design of a wing frame was determined by the Pareto method basing on three criteria: minimal weight, minimal wing deflection, maximal safety factor and minimal weight. Positions of wing frame parts, i.e. spars and ribs, were considered as optimization parameters. As a result, an optimal design of a composite spar-type wing was proposed. All the calculations necessary to select the optimal structural and design of the spar composite wing were performed using nonlinear static finite element analysis in the FEMAP with NX Nastran software package.

scholarly journals THE STATIC OPTIMIZATION TASK OF OPTIMAL DESIGN OF NONLINEAR ELECTRONIC SCHEME

2019 ◽  
pp. 109-115
Author(s):  
Didmanidze Ibraim ◽  
Donadze Mikheil
Keyword(s):  
Optimal Design ◽  
Optimality Criteria ◽  
Pareto Optimal Solutions ◽  
Optimal Solutions ◽  
Design Task ◽  
Optimization Task ◽  
Minimum Capacity ◽  
Optimal Values ◽  
The Given ◽  
Selection Of

The article deals with such an important selection of the elements of electronic scheme of the given configuration, when the certain requirements of technical task are satisfied and at the same time the selected optimality criteria reach the extreme value. The gives task has been solved by the method of one-criterion optimization, in particular, the method of center gravity. To formalize the given scheme we have compiled a mathematical model of optimization, which considers the requirements of technical task. The optimal design task of the presented electronic scheme was brought to the task of multi criteria optimization. The computational experiments have been resulted in the Pareto-optimal solutions, from which there was selected a compromise on that corresponds to the minimum capacity, required by the scheme. According to the optimal values of resistors, we have conducted a computerized analysis of the transient process of the given electronic scheme with the help of a computer program Electronics Workbench.

scholarly journals Optimization of Hot-Water Drilling in Ice with Near-Bottom Circulation

Water ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 127
Author(s):  
Gaoli Zhao ◽  
Pavel G. Talalay ◽  
Xiaopeng Fan ◽  
Nan Zhang ◽  
Yunchen Liu ◽  
...  
Keyword(s):  
Technology Development ◽  
Hot Water ◽  
Drilling Process ◽  
Outlet Temperature ◽  
Experimental Conditions ◽  
Rate Of Penetration ◽  
Drilling Performance ◽  
Drilling Technology ◽  
Jet Nozzle ◽  
Lower Flow Rate

Hot-water drilling in ice with near-bottom circulation is more advantageous than traditional hot-water drilling with all-over borehole circulation in terms of power consumption and weight. However, the drilling performance of this type of drill has been poorly studied. Initial experiments showed that drilling with single-orifice nozzles did not proceed smoothly. To achieve the best drilling performance, nozzles with different orifice numbers and structures are evaluated in the present study. The testing results show that a single-orifice nozzle with a 3 mm nozzle diameter and a nine-jet nozzle with a forward angle of 35° had the highest rate of penetration (1.7–1.8 m h−1) with 5.6–6.0 kW heating power. However, the nozzles with backward holes ensured a smoother drilling process and a larger borehole, although the rate of penetration was approximately 13% slower. A comparison of the hollow and solid thermal tips showed that under the same experimental conditions, the hollow drill tip had a lower flow rate, higher outlet temperature, and higher rate of penetration. This study provides a prominent reference for drilling performance prediction and drilling technology development of hot-water drilling in ice with near-bottom circulation.

scholarly journals THE METHODS OF JUSTIFICATION OF SELECTION OF EFFICIENT REAGENTS FOR THE DRILLING PROCESS FLUID

2016 ◽  
pp. 93-96
Author(s):  
V. P. Ovchinnikov ◽  
A. F. Semenenko ◽  
P. V. Ovchinnikov
Keyword(s):  
Cost Reduction ◽  
Drilling Fluid ◽  
Educational Institutions ◽  
Drilling Process ◽  
Special Software ◽  
Process Fluid ◽  
Control And Management ◽  
Selection Of

The method of reducing the number of ingredients in the composition of the solution was proposed. Cost reduction for preparation of drilling fluid was analyzed, improved conditions for the control and management of its parameters. The 12 most effective polymers were recommended to be implemented..The simplicity of the algorithm above process is not particularly difficult. Based on this, special software might be created for using in design institutes and educational institutions.

scholarly journals Selection of the rotor heat-up rate for supercritical parameter turbines

2013 ◽  
Vol 34 (3) ◽  
pp. 89-104
Author(s):  
Andrzej Rusin ◽  
Marian Lipka ◽  
Henryk Łukowicz
Keyword(s):  
Optimal Design ◽  
Turbine Rotor ◽  
Design Solution ◽  
Supercritical Steam Parameters ◽  
Start Up ◽  
Supercritical Parameter ◽  
Design Calculations ◽  
Steam Parameters ◽  
Start Ups ◽  
Selection Of

Abstract The paper presents the results of the numerical analyses for the steam turbine rotor, dedicated for the newly-designed 900 MW steam unit with supercritical steam parameters (650 °C, 30.0 MPa). Basing on the design calculations, an optimal design solution was determined. Review of the available literature on materials for turbine rotors with supercritical steam parameters was done. Then the start-ups of the turbine were simulated. Thermal and strength states were analyzed. As a result, an optimal start-up characteristic was obtained.

Double-section, non-retrievable casing drilling technique

2012 ◽  
Vol 52 (1) ◽  
pp. 261
Author(s):  
Keith Won ◽  
Ming Zo Tan ◽  
I Made Budi Utamain
Keyword(s):  
Planning Process ◽  
Cost Savings ◽  
Polycrystalline Diamond ◽  
Drilling Process ◽  
Drilling Performance ◽  
First Case ◽  
Drilling Technique ◽  
Drilling Technology ◽  
Improved Design ◽  
Casing Drilling

With the continuous surging in daily rental rates of oilfield exploration rigs, Casing while Drilling technology—which provides operators with an alternative drilling solution for a reduction in drilling flat-time and increased drilling operation efficiency—has appeared to be a standard part of drilling engineers’ toolkit in the well-planning process. Significant cost savings generated by Casing while Drilling have contributed to this technique being widely deployed on top-hole string installations on exploration and appraisal wells in the southeast Asia region. The double-section casing drilling technique has gained increasing popularity among operators in recent years; however, this technique development has been hamstrung by limited casing bit selections. An improved design casing bit has been highly anticipated in the industry to reduce this technique’s complexity of drilling process. Finding an equilibrium between durability and drill-out capability features for a casing bit has been a major challenge for bit designers. The increasing prospect and demand for a double-section casing drilling technique, however, has yielded the development of the casing bit design to a wider portfolio, inclusive of a more robust PDC (polycrystalline diamond compact) cutter-based drillable casing bit. The introduction of the new robust but drillable PDC cutter-based casing bit has broadened the Casing while Drilling application. The double-section casing drilling technique without the need for an additional conventional clean-out trip has become a strong contender to be part of drilling engineers’ next toolkit in delivering enhanced drilling performance and increasing operational efficiencies. This paper will introduce the first case history of the successful planning and implementation of the double-section casing drilling technique—particularly emphasising its optimised drilling performance and ease of drill-out without the need for a specialised drill-out bit.

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