One of the main sources of obtaining information about the degree of heating of the oil reservoir and the effectiveness of steam cyclic treatment of wells is geophysical research, which consists in measuring the temperature in the wellbore using a descent geophysical instrument.
This is a rather laborious and not always successful process. As an alternative, this article attempts to develop an engineering software product capable of predicting the temperature distribution in a well and thus partially or completely replace the downhole survey. The neural network underlying the engineering product was trained on data from the wells of the Usinskoye field. The article notes that forecasting the temperature distribution in wells can allow engineers to find and implement the most rational modes of steam cycling treatment.
Materials and methods
When designing, generating, testing neural networks and neural network modeling, software tools, developments and experience of the scientific school of the Perm State National Research University were used. To train neural networks, a dataset was used, created on the basis of steam cycling data from 50 wells in the Usinskoye field.
steam cycling, GIS 55, Usinskoye field, oil, oil reservoir, well, forecasting, neural network, temperature
The present paper objective is the test process description of the subsystem for detecting unusual events (SDUE) Unified Telemechanics Complex (UTC) at a multi-pipe main gas-pipeline (MGP).
The paper presents:
• a principle of designing a test bench for debugging and checking SDUE on the basis of on-line mathematical model and MGP map as a flow chart;
• the tests complex and their results referred to SDUE operation for detecting unusual events;
• obtained specifications of SDUE.
Materials and methods
Full-scale experiments for defining front characteristics, amplitude and duration of the gas pressure drop caused by “partial pipeline rapture” of the main gas pipeline (MGP) as well as gas pressure drop propagation rate in MGP. Tests at operating gaspipeline.
telemechanics, tests, unusual events (UE), specifications
The present work object is to add the telemechanics system by methods for detecting gas-main multi-pipeline points of leakage. There are proposed algorithms for detecting gas pressure decrease at the sensor arising at the beginning of the leak and updating mathematical map of gas-main multi-pipeline (GMMP). Analysis of dispatcher actions when eliminating real breakdown in case of gas-pipeline partial break at the boundary of two linear production areas (LPA) was carried out. As a result of the analysis there is proposed a solution for accurate defining the point of leakage within LPA at the basis of providing additional communication channel between the end supervised stations.
Materials and methods
The work presents the algorithm for detecting pressure decrease at telemechanics supervised stations, the method for generating an integrated information card of gas-main multi-pipeline, an example of the real breakdown is studied and a conclusion was drawn about the necessity of interaction between the adjacent sections of the gas-main pipeline.
Telemechanics, leak detection system, fault isolation
The present work objective is to define the main reasons causing complexity of defining leakage location at a multi-line gas-pipeline by a shift dispatching personnel on the basis of the information received from the linear telemechanics system. Analysis of dispatcher actions in case of real breakdown elimination when the gas-pipeline is broken completely was carried out. As a result of the analysis there are indicated available telemechanics systems basic shortcomings and the ways to solve the said problems. An important aspect presented in the work is the necessity of using system approach to the information recorded by the linear telemechanics system and creating additional methods and algorithms for automated processing this information in order to define the time and location of the emerged leakage without specialized sensors.
The article is devoted to fundamentals of automation system, necessary for registration the mechanical impurities (sand) in gas producing wells.RVTF “KADET” VN1228, the solids carryover recording device, manufactured in the country, is described in the article; it is able to determine the occurrence of the sand in gas current and fractional change of sand quantity, taking into account the unit of time.
The unstable economic conditions dictate the need of development of new gas production regions and the analysis of long-term prospects of their operation. The mathematical apparatus and software providing forming the strategy of development of gas fields group on the basis of joint use of simulation, fuzzy mathematics, discrete and multicriteria optimization are considered in article.
The article presents a solution to prevent hydrate formation at the initial stage of the gas processing by upgrading the operational algorithm of the node supplying methanol in the complex gas preparation facility.
This publication describes the relevance of creating a mobile telemetry complex on the basis of wireless technologies to ensure the operational control ofthe gas production. In article was paid special attention to risks associated with sloughing of sand from thegas production wells. A practical implementation of a mobile monitoring complex "Parus" of domestic production was presented. This complex solves the problem of registration the sloughing of sand from gas production wells in real time. It were described the complex’s construction and its structure. It were described the hardware of building two-level information system, shown the various options for its implementation, allowing to carry out telemetry at different structures hardware of complex, including in its structure of acoustic emission sand registration system. In this article was described registration method of sand in gas stream, which has a difference from analogues as is isolation the sensitivity zone.
It was researched and developed the mining model conditions of operator offshore drilling platforms. The analysis of modern information products and add-ons, which are used in the field. The analysis of methods and tools for data cleansing offshore drilling platforms in the emerging information systems. It is presented a clear process of communication and add-in SQL Server Management Studio, and as part of the storage and presentation of data.
Usually the infrastructure of oil producing companies is distributed geographically and has distant objects. Data transmittion from all objects to control point can bring to problems related to the lack of system performance. This paper considersthe issue of the regime of sporadic transmission. It is proposed to use the optimization techniques to dynamically determine the basic characteristicsof sporadic transmission - apertures telemetry to eliminate high congestion of communication channels and ensure normal operation.
We have reviewed various aspects of using soft starters and the variable frequency drive to automatize resource and energy saving industrial processes.
In this article were presented results of the application of neural network approach in the creation of a monitoring system of technological parameters of wells operated by steamassisted gravity drainage. Showcased visual representation of design criteria deviations.
In present paper considered the issue of automation and data transmission of the measuring system for metering the mass of heavy and high temperature oil to the control center of the field office. The main objective is to obtain reliable information about the measuring process. This data is used not only for technological purposes, but also to have government benefits.
It is analyzed a reasonability of using Excel in activities of procurement and logistics departments in oilfield business. The generated by years approach to the way of organization of such departments in a part of using special software is described. Notably it is offered to use simple data bases. In particular to use database FileMaker Pro. It is presented an example of implemented software with detailed description of functionality, needed for Procurement and logistics departments of oilfield companies.
Infrastructure of oil and gas companies, usually is distributed geographically distant objects. When implementing such a data transferobject may experience problems associated with limitations in receiving radio-frequency wireless communication system. This paper deals with the possibility of applying alternative communication technologies for data transmission, in particular atmospheric optical communication link. For selecting the optimal communication technology proposed the useof specially developed card of applicability communication technologies.
The features of hardware realization and software of automatic plants in compressor stations’ ACS are considered. New structures and algorithms, providing the realization of functional capabilities of local ACS by objects of the main gas pipelines, are presented.
Aspects of frequency controlled drive use in automation of the energy saving technical process are reviewed. Oscillograms of automatic switch of the motor power supply from the inverter to the main supply and vice versa are shown.
A new outlook, principles, provisions and general methods of developing contenteffective and resource-consumption optimal programs of UGS maintenance and repair are presented from the point of their industrial safety provision.