A justification of the application of low-mineralized flooding at the later stage of offshore oil field development

Известно, что для поддержания пластового давления используется вода совместимая по своему химическому составу с пластовой. В этом случае обеспечивается возможность сохранить присущую эксплуатируемому объекту поровую структуру. Данная работа посвящена обоснованию применения низкоминерализованного заводнения нефтяных месторождений на поздней стадии разработки. На основе изученного материала разработаны методические рекомендации для повышения эффективности системы поддержания пластового давления за счет закачки низкоминерализованной воды. Результаты теоретического анализа (литературная и патентная проработки) дополнительно были подтверждены проведенным гидродинамическим моделированием низкоминерализованного заводнения на примере нефтяного месторождения. It Has been known that the water used for reservoir pressure maintenance has to be compatible in its chemical composition with the reservoir water. In this case, it is possible to preserve the pore structure inherent in the exploited object. This article is devoted to the justification of applying low-mineralized water flooding at the later stage of offshore oil field development. Authors developed a method to improve the efficiency of reservoir pressure maintenance system with applying low-mineralized water injection. The novelty of this article is the mathematical determination of the optimal period for the start of the application of low-mineralized water flooding. Theoretical analysis results were also confirmed by hydrodynamic modeling of low-mineralized water flooding in an offshore oil field at a late stage of development. Based on the analysis results, authors identified requirements and recommendations for the low-mineralized water flooding.

Diagnostic Plots for Production Decline During the Transition of Oil Field Development From Depletion to Water Injection

In this paper the simplified way is proposed for predicting the dynamics of liquid production and estimating the parameters of the oil reservoir using diagnostic curves, which are a generalization of analytical approaches, partially compared with the results of calculations on 3D simulation models and with actual well production data.

Diagnostic Results of Current Distribution Injected Water Flow in the Productive Formation for Neft Dashlary Oilfield

For controlling the oil field development proposed an economically efficient express calculation and visualization method of the hydrodynamic parameters current values distribution in the productive formation. The presented report shows the results of applying this technique for determining the injected water propagation direction into the productive formation (X horizon) at the «Neft Dashlary» field. Based on the calculated results, the current distribution of the injected water was visualized in the selected section of the formation. High accuracy of the calculation was confirmed by comparing obtained results with the results of a simultaneous tracer study conducted in the field conditions. During tracer studies it was tested a new tracer material, more effective than its analogs. According to laboratory and experimental studies, the addition of 0.003% of this indicator substance to the volume of injected water is the optimal amount for its recognition in the well's product. At the allocated area of the "Neft Dashlari" field, the benefits from the use of the calculation method amounted to 62.9 thousand manats. Based on the obtained satisfying results of the new method for calculating hydrodynamic parameters and the use of a tracer indicator application at the «Neft Dashlary» oilfield, it is recommended to apply these developments in other oil and gas fields for mass diagnostic of the reservoir fluid distribution in a selected area of productive formations.

Economic Analysis and Generic Algorithm for Optimizing the Investments Decision-Making Process in Oil Field Development

Due to the substantial amounts of money involved and the complex interactions of a number of different factors, managers of oil and gas companies are faced with significant challenges when making investment decisions that will increase business efficiency and achieve competitive advantages, especially through cost control. Due to the various uncertainties of the current period, optimal investment strategies are difficult to determine. Thus, through an economic analysis that includes data analysis, quantitative risk analysis scenarios, modelling and simulations, a work framework, in the form of a generic algorithm, is proposed with the aim of generating a complex procedure for optimizing investment decisions in oil field development. A complex set of elements is considered in the analysis: costs (operational expenditures (OPEX) and capital expenditures (CAPEX), daily drilling rig costs), prices (oil, gas, separation and water injection preparation), production profiles, different types of taxes and discount factors. Above all, oil price volatility plays an essential role and creates uncertainty in relation to profitability and the strategic investment decisions made by oil exploration and production companies.

Management of Nigerian Marginal Oil Fields for Economic Sustainability in Niger Delta Region

The objective of the study was to examine the assertion that marginal oil field development remains one of the economic fortunes of Niger Delta region in Nigeria. This is evident with its shares in the region power output as well as its contribution to the industrialization. Multiple case studies of marginal oil field operations corroborate the relationship between marginal field development and economic fortunes of Niger Delta region. Marginal field firms provide electricity to the host communities where they operate. Also, industries are fed with natural gas from marginal field operating in the region. The marginal field operators ensures that host communities are getting electricity. Also cement factory is fed from natural gas operating in the area. However, the management of marginal field resources has been far from being optimally beneficial. The real issue is how to manage the marginal field for the welfare of the people. Against this background, the study findings suggested that the country marginal field wealth be used to implement people-oriented programmes for better welfare spread.

Impact of Oil Installations on The Rural Development and Environment

There is no doubt that oil is considered a strategic commodity for producing and exporting. It is been experienced that oil is an important means to achieve economic growth. The oil industries encounter conflicts such as widespread environmental issues, human displacement, and inadequate compensation for losses imposed in the oil-producing communities, and inadequate community level involvement. These are leading to alienation between states and the indigenous population. The aim of the current research is to investigate the impacts of oil field development for rural areas, having Taq-Taq Oil Field in Kurdistan Region Iraq (KRG) as a case study. The research project was conducted in the form of a survey study. The population of the study included the rural residents in six villages around the field. The necessary data for this research was collected squarely 48 samples. Rural residents in the study area were taken using a random sampling method. The reliability of the questionnaire was calculated by Cronbach alpha coefficient for different sections. After conducting a pilot study for each structure respectively calculated: economic infrastructural, social, cultural, and environmental factors. The results of factor analysis showed that the negative and positive impacts of oil industry development occurred in the rural area. In this case study, a variance of %64 explained for entire factors included: infrastructural, social, cultural, economic, and environmental.

MODERN METHODOLOGICAL POSSIBILITIES OF THE TRACER METHOD FOR ASSESSING THE COVERAGE OF AN OIL RESERVOIR BY FLOODING

The article presents the results of modeling tracer studies of the process of flooding of an oil reservoir. As a result of the studies, the dependences on the time of the change in the volume occupied by the injected water were obtained. Formulas are given that allow us to calculate the values of the coefficient of coverage of the reservoir area by flooding as a whole and the contribution of each injection well to flooding. The technology is implemented by continuously pumping the tracer into the injection well. Continuous injection of different tracers into different injection wells allows for operational monitoring of oil field development