Implementation of Different Types Flowmeters for Gas Lift Metering on Orenburgskoe Field

Gas or liquid flow control is one of the most important technical tasks in the oil and gas industry. The choice of a particular device most often occurs on the basis of the established practice of application in a particular company. This paper presents the experience of Gazpromneft-Orenburg in the use of overhead and stationary flow meters of various types, including ultrasonic and restriction devices for measuring gaslift gas in the Orenburg oil and gas condensate field

Application Rationale of Well Flow Test Complex Modules Covering Well Shut-in at the Bottomhole in terms of Eastern Siberia Carbonate Reservoirs Study

The paper presents the experience of oil and gas exploration in the fields of the Irkutsk region. The geological features of the studied facilities dictate a practical approach and the use of compact and efficient technological solutions that can later be successfully applied to a large number of fields with similar geology. The paper highlighted an optimized complex of works on the development and testing of wells target objects in a cased wellbore, using the technology of “the well shut-off at the bottomhole”. This arrangement ensures the effective implementation of work on the development of target objects and allows for high-quality registration of the bottomhole pressure dynamics. This engineering solution allows to perform a full cycle of hydrodynamical studies of well (well test) for a target interval in a relatively short time. The use of a tube bank significantly reduces the wellbore storage eand allows to obtain detailed data reliably characterizing reservoir properties and the structure of the reservoir under study. The article describes the technology of hydrodynamic studies, with the well shut-off at the bottomhole. The article deals with the research problems of highly productive, flowing facilities, with a concrete example and a detailed analysis of technological features, interpretation options, possible complications and measures for optimization. The possibility of replicating technology in various geological and technical conditions is considered

Step-Up Concentration Method for Chemical Agents’ AdsorptionMeasurement in Porous Media

Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.Before implementing any chemical enhanced oil recovery project at the field, it is very important to carry outa feasibility study, which is impossible without determining their effectiveness under laboratory conditions. The task of laboratory research is to determine all the parameters of surfactant and polymer solutions,necessary for further analytical evaluation and reservoir simulation. It is necessary to conduct laboratoryexperiments to perform technical and economic assessment of the chemical EORs implementation. One ofthe most important issues here is to determine the amount of reagent held in the pore space of the reservoir. The retention parameter determines how much reagent needs to be injected to achieve the requireddisplacement efficiency. It directly affects reagent consumption and economic efficiency. This paper discusses various methods for determining the amount of reagent retained in the reservoir;it can be surfactant species or a polymer. To solve the problem of reducing the time for the experimentalpart, an algorithm of an experiment was developed, which makes it possible to determine the retentionparameters in a shorter time and with less labor. This method was tested and showed its effectiveness inthe course of a technical and economic study on the possibility of implementing polymer flooding for afield in Eastern Siberia. As a result of the experiments, the relationships between the surfactant or polymer retention and theirconcentration, and also between permeability and the amount of reagent adsorbed were found. The effect ofsalinity on the retention parameter was determined, the fact of desorption for both surfactants and polymerswas revealed. Inaccessible pore volume for polymer was determined

Complex Approach for Gas Lift Wells Optimization for Orenburgskoe Field

At the moment in Russia, the gas-lift method of operation is becoming popular again not only because of the significant reduction in operating costs, ease of operation, but because of the involvement in the development of a large number of assets with oil rims. This paper describes an integrated approach to optimizing the operation of wells in the Orenburg oil and gas condensate field, which is characterized by the largest number of wells in Russia that are operated by gas lift. The paper describes traditional approaches to the gaslift well testing as well as a new approach to improve operational efficienc

Well testing design development in carbonate reservoir

Актуальность исследования обусловлена необходимостью совершенствования методов гидродинамических исследований скважин вследствие неоднозначности интерпретации результатов в условиях карбонатного коллектора. Приоритетами при проведении гидродинамических исследований скважин являются максимальное качество получаемой информации о фильтрационно-емкостных свойствах пластов и минимальные потери добычи нефти в ходе остановки скважин на исследования. С целью выполнения данных задач актуальной является разработка дизайна гидродинамических исследований скважин, предлагаемая в статье. Дизайн позволит обеспечить комплексный подход к моделированию процесса проведения исследований и прогноза получаемых данных. Цель: разработать дизайн гидродинамических исследований скважин с целью оптимизации времени проведения исследований и сокращения периода остановки скважин на этапе опытно-промышленной эксплуатации; подтвердить экономическую эффективность представленной методики. Объекты: скважины Т-23, Т-361, Т-388 месторождения A, продуктивные отложения которого преимущественно представлены кавернозно-трещиноватыми карбонатными породами рифейского возраста. Методы. Поставленные задачи исследования решались теоретически и экспериментально в промысловых условиях. При этом был выполнен анализ публикаций по данной проблеме; проведены промысловые гидродинамические исследования скважин, вскрывающих низкопроницаемый карбонатный коллектор; выполнено моделирование гидродинамических исследований, выполнены сравнительные расчёты по обработке результатов с помощью программного комплекса Saphir компании «KAPPA Engineering». Результаты. Приведены результаты разработки дизайна гидродинамических исследований в условиях карбонатного коллектора. Проанализированы данные гидродинамических исследований для 12 скважин, эксплуатирующих рифейские карбонатные отложения, за период с 2005-2008 гг. представлены результаты по трем скважинам: Т-23, Т-361, Т-388. Представлена методика моделирования гидродинамических исследований в программном комплексе Saphir компании «KAPPA Engineering». Приведен пример расчета времени стабилизации при исследовании скважины методом установившихся отборов, а также оценка оптимального времени регистрации кривой восстановления давления. Также приведено сравнение стандартной методики, которой руководствуются при испытании скважины - РД (руководящий документ) 153-39.0-109-01 «Методические указания по комплексированию и этапность выполнения геофизических, гидродинамических и геохимических исследований нефтяных и нефтегазовых месторождений», с методикой, представленной в статье. На основе данного сравнения была установлена экономическая эффективность.The relevance of the research is caused by the need to improve the methods of well testing due to the ambiguous interpretation of the results in a carbonate reservoir. Priorities in well testing are the maximum quality of the information obtained on the reservoir filtration and reservoir properties and the minimum loss of oil production during the shutdown of wells for research. In order to perform these tasks, it is important to develop the design of the well testing proposed in the article. The design will provide an integrated approach to modeling the process of conducting research and forecasting the data received. The main aim of the research is to develop the design of well testing in order to optimize the time of the research and reduce the period of shutdown of wells at the stage of pilot operation, as well as to confirm the economic effectiveness of the presented methodology. Objects: wells T-23, T-361, T-388 of oilfield A, the productive deposits of which are mainly represented by strong cavernous-fissured carbonate rocks of Riphean age. Methods. The set research tasks were solved theoretically and experimentally under field conditions. At the same time, the analysis of publications on this issue was carried out; field hydrodynamic studies of wells that open a low permeable carbonate reservoir were conducted; simulation of hydrodynamic studies was carried out, comparative calculations were carried out for processing the results using the Saphir software package of KAPPA Engineering. Results. This article presents the results of developing the design of hydrodynamic studies in a carbonate reservoir. The data of hydrodynamic studies for 12 wells operating Riphean carbonate sediments were analyzed for 2005-2008, the results for three wells: T-23, T-361, T-388, are presented. The technique of simulation of hydrodynamic researches in the software complex Saphir of the company «KAPPA Engineering» is presented. The paper introduces the example of calculation of the stabilization time in the study of the well by the method of steady-state sampling, as well as estimation of the optimum time for recording the pressure recovery curve. Also, the article compares the standard methodology used for testing a well - RD (ruling document) 153-39.0-109-01 «Methodological guidelines for the integration and phasing of geophysical, hydrodynamic and geochemical studies of oil and oil and gas fields» with that presented in the article. Based on this comparison, the economic efficiency was established