The basic method for oil-saturated, low permeability, anisotropic reservoir is hydraulic fracturing. Currently, the technology of a multi-stage fracturing in horizontal wells (hereinafter - the Multifractured HW) is rapidly developing, allowing the creation of several fracs in several areas of the horizontal well within the one workover. In this paper the sequence of actions designed to calculate the targets of development with the Multifractured HW and for comparison with grids of vertical fractured wells. The main problem of calculating the field development plan with the system of the Multifractured HW on full field simulation model is the lack of reference to both the input flow rates of wells, and the dynamics of decline. To set up a simplified representation of such wells in the full simulation model the detailed sector model was created for different types of completions: Multifractured HWFractured vertical well The sector simulation was run for different reservoir properties, and the dependence of the flow rates ratio in the pseudo-steady state flow was calculated. The paper presents the results of Multifractured HW drilling, comparison of design and actual performance, the lessons learned.

Подбор оптимального типа заканчивания скважин с ГРП на основе моделирования системы разработки высокорасчлененного пласта Т.И.Гатауллин, П.И. Елисеев, Ф.С. Завалин / ООО «НОВАТЭК НТЦ», к.т.н. А.А. Лутфуллин / ООО «НОВАТЭК-ТАРКОСАЛЕНЕФТЕГАЗ» Авторское право 2012 г., Общество инженеров нефтегазовой промышленности Этот доклад был подготовлен для презентации на Российской технической нефтегазовой конференции и выставке SPE по разведке и добыче 16-18 октября 2012 года в Москве, Россия.Данный доклад был выбран для проведения презентации Программным комитетом SPE по результатам экспертизы информации, содержащейся в представленном авторами реферате. Экспертиза содержания доклада Обществом инженеров нефтегазовой промышленности не выполнялась, и внесение исправлений и изменений является обязанностью авторов. Материал в том виде, в котором он представлен, не обязательно отражает точку зрения SPE, его должностных лиц или участников. Электронное копирование, распространение или хранение любой части данного доклада без предварительного письменного согласия SPE запрещается. Разрешение на воспроизведение в печатном виде распространяется только на реферат объемом не более 300 слов; при этом копировать иллюстрации не разрешается. Реферат должен содержать явно выраженную ссылку на авторское право SPE.

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One of the most important challenges of the current stage of the field development is selection of concept of infrastructure system development and solution of classical problem of optimization: Minimization of capital expenditures for infrastructure development, Minimization of cost of production, treatment and intra-field transportation of the raw material to the LNG plant, Ensuring of high reliability of the entire infrastructure system for continuous flow of raw material to the LNG plant trains. Reaching of the field performance targets, namely: - Duration of the period of continuous gas production - Hydrocarbons recovery factors Besides, in designing of the infrastructure system and accordingly, in selection of the solution, it is necessary to take into account the following factors representing complexity of the future industrial activity in general: Geographical location of the field in the area with challenging climatic (arctic) conditions which calls for the necessity of maintaining of high level of self-sustainability in the field; Considerable differences in values of formation and accordingly, wellhead pressures of the production wells stock; Taking an optimal decision in part of concept of infrastructure development in these challenging conditions is possible only on the basis of the complex integrated digital model "Well - Reservoir - Gathering network - Treatment system" allowing for correct evaluation of engineering parameters of field development with account for the effect of existing limitations related to reservoir, well design, downhole equipment, gathering system and production treatment. Solving of this problem using the up-to-date modeling technologies accounting for mutual effect of all elements of the system on the basis of multi-disciplinary teams includes the following: Generation of the integrated models "Reservoir - Wells - Gathering system - Treatment system - In-field transport system to the LNG Plant Inlet", Separation of individual types of process design calculations for analysis with consequent incorporation into the integrated model, Carrying out of multi-option calculations of engineering parameters of development and infrastructure, Assessment of the results of calculations of engineering parameters of options by specialists of the multi-disciplinary team, Economic assessment of costs of implementation of the studied options. Using the above mentioned approach with involvement of the integrated field model, multi-option calculations of location and parameters of production treatment facilities and dynamic calculations of flow lines operation parameters for various scenarios of the LNG plant were performed.