DOI: 10.24412/2076-6785-2023-3-74-79
Abstract
The article describes an algorithm for determining the mobility and radius of the skin zone based on semi-log and log-log analyses of diagnostic plots of pressure and temperature transient data. The use in the analysis both of the plots of temperature change and its derivative distinguishes the work joint graphical analysis of diagnostic plots presented from other methods. To verify the method, we used temperature synthetic data in the reservoir generated by the RN-VEGA.
Materials and methods
We have presented a comparison of applying various graphic methods. It showed that producing reservoir and fluid properties in the skin zone and in the remote reservoir zone can be estimated using both transient temperature and pressure data dynamics. Analysis of two diagnostic temperature plots improves the result.
The models describing the pressure behavior in a radial composite reservoir, built taking into consideration the diagnostics results, showed good convergence with field data.
Keywords
radial composite reservoir, Thermal dynamic well test, skin-factor, graphical analysis, diagnostic plot
DOI: 10.24411/2076-6785-2020-10099
Abstract
The article presents the results of testing an ultrasonic scanner at technological and energy facilities. A comparative analysis of the results of technical diagnostics obtained from an ultrasonic, infrared and ultraviolet scanner is performed.
Materials and methods
Remote monitoring of technical condition of equipment, thermal methods, optical methods, acoustic methods.
Keywords
ultrasonic scanner, infrared scanner, ultraviolet scanner, technical diagnostics, testing
In this article were analyzed causes of failures the gas pumping unit equipment of compressor stations and statistics of theirs’s failures in the course of 10 years. Key causes responsible for failures of sleeve bearings which fix the position of the turbine rotor shaft and ensure minimal clearance in the inflow section have been revealed. An original mathematical model of the basic components in a gas pumping unit has been devised for the purpose of identifying faults happening in the thrust section of the sleeve bearings based on diagnostic parameters. This has made it possible to ascertain the working condition of the sleeve bearings by the change in their rigidity in the oscillating model of the gas pumping unit key elements.
Pumping equipment of petrochemical factories works in the chemical exposure and high temperatures of the pumped flows. Thus, the actual problem is the reliability of the circulation pumps. This paper analyzes the statistical information on mean time to failure and types of defects that lead to failure of the hot pump petrochemical plant. According to available data of operational period of the unit before each failure were obtained histograms of density functionof failure distribution for the analysis the reliability parameters of pumps operation. Also were determined main principals for increasing of reliability of pump equipment.
In the article considered the metal-roll quality control issue. It were conducted the comparison of eddy current method ofnondestructive testing and classic methods that using in metal-roll production by X-ray and supersonic methods. Description of developed automated line for testing was presented.
This paper presents a method for modeling the vibrations of the main elements of pumping unit - the shaft, bearings with the oil layer and their shell as a linearly related mechanical system. On the basis of a mathematical modelof this system, we can define its internal parameters, and the deviation from their normal values can be used to discuss about the development of certain typesof failures. By the result of the analysis ofthese parameters, we suggest a scheme of laboratory simulation of journal-thrust bearing, using the criteria of physical similarity.
The task of predicting failure rotary equipment can reasonably be reduced to the issue of calculating the residual life of its bearings, as almost half of the failures have to because of the failure of the bearing assemblies. The described program allows correct predicted parameters of bearing life, under the influence of practical operating conditions in the workplace.
A stress-corrosion cracking is one of the most common defects of transfer pipelines. The applied methodsand calculations of residual life assessment of pipes repair do not include changes the properties of metal in areas prone to this typeof defects. The article considers the problem of determining the residual life of oil and gas pipelines during repair areas prone to stress corrosion cracking. It was proposed the technique of integrated control, using magnetic and eddy current NDT methods, in order to increase the precision in estimating the period of trouble-free operation of the pipeline.
The article describes the limitations of the existing methods for qualitative and quantitative control of oil. This can be done by radioisotope measurements. The radioisotope radiation method has huge penetration strength, high sensitivity to measuring flow density, the unit parts arecompatible and easily interchangeable, and its methodology is simple.
Analyzed some technical complexities for technology of commands transferring through metallic walls of pipelines on ultra-low frequency of 22 Hz.
In welded joints of gas pipelines pipes butt welded with the help of high frequencycurrent, one of the most dangerous defects are cracks including through cracks.The article discusses an optimal complex of methods for crack detection in joints of pipes operational gas pipelines butt welded to the edges of the heating by high-frequency current (HFC).
Reliability and safety are key factorsin any industrial enterprise. "Balteñh" developed a new strategy for an integrated approach in the operation, repair and diagnostics of various types of industrial equipment. "Reliability technologies" is the result of fifteen years of our activity and the next stage in the progress of our company. This concept will help to draw the attention of specialists at all levels of any company on the main issues and challenges that are a stumblingblock on a daily basis for normal and trouble-free operation of all technical departments of industrial companies.
Cost reduction for maintenance and improvement of reliability of production equipment are the main and priority tasks for each production line. Very often factory managers address to consulting companiesfor theoretical calculation of essential annual costs for production, repair and diagnostics of industrial equipment. Please note that in most cases all the necessary knowledge to improve the efficiency and profitability of productionhave experienced your company, use internal resources.
In the era of increased requirements for production safety, equipment reliability and environmental protection, business owners continue to look for ways to reduce operating costs and the costs of maintenance and repair.The article describes the use of multiple methods of technical diagnosticsand NDT for the optimization of production costs —the concept of Reliability technologies, developed by BALTECH.
Much of the existing infrastructure of the main gas and pipelines around the world quickly approaching the end of its useful life. This means that the extension of this period, as well as constant monitoring of the pipeline is becoming more critical as compared to how it was just a few years ago. Therefore, traditional methods of inspection used previously, are only a statistical approach to finding potential problems
Much of the existing infrastructure of the main gas and pipelines around the world quickly approaching the end of its useful life. This means that the extension of this period, as well as constant monitoring of the pipeline is becoming more critical as compared to how it was just a few years ago. Therefore, traditional methods of inspection used previously, are only a statistical approach to finding potential problems
The review of current state condition of X-Ray inspection. There are developmentand improvement of X-Ray inspection in thearticle, equipment classification of basicradiographic testing methods regardingapplication.
The purpose of this paper is to examine the experience of using a mobilelaser scanning objects FEC, description of the methods of work and analysisof the accuracy of the data. It will also consider types of finished products. The relevance of the method in the article due to the necessity of obtaining, additions and updated large amounts mapmaterials a tight schedule, what interested the design departments and operators.
New method of acoustic-emission system building is proposed in the paper. KADET systemis designed for registration of solids removal from gas wells. The fundamental difference of the system from the existing sensors lies in the fact that it registers only a countable number of ultrasonic pulses, which is excited by the blows of the individual grains of sand on a given horizontal straight pipe section (in the sensitivity zone). KADET system can be directly installed on the well-head which is not provided withpower supply. In this case wireless data transferring is used. The paper presents the results of the systemtesting which was fulfilled on the wells of Gazprom’s underground gas storage facilities (UGSF) includingUvyazovskoe UGSF, Kasimovskoe UGSF and at Medvezhye and Yamsovey gas fields.
The cracks in tool-joint thread for drill string elements are described in the article, a types for nondestructive thread inspection is overviewed. Eddy current probe types, eddy current thread inspection methods and display the test results way are compared. The method of nondestructive tool-joint thread for drill string elements inspection with application of tangential eddy current probe is described in the article.
Materials and methods
Detection and size measurement of the defects of the tool-joint thread for drill string elements by eddy current phase technique with application of tangential probe.
Results
Eddy current defectoscope with application of tangential probe is developed. Probes are highly sensitive to thread root cracks, and small stray parameter influence. The application of the phase test results display is reasonable.
Ñonclusions
Defectoscope implementation in the manufacture of equipment for the oil industry companies improved the reliability of products by preventing release of products with manufacturing defects. Defectoscope implementation in the operating
and service companies reduced the cost of repair of drill pipes and increase the probability of failure of oil well equipment. Non-destructive testing procedures for the non-ferromagnetic stainless steel and aluminum alloys pipe thread
is ensured.