RESEARCH OF LOADS ON DRIVE OF ROD INSTALLATIONS IN LOW SPEED MODE AT HIGH-VISCOUS OIL PRODUCTION

To evaluate the potential for low-speed modes to improve transit access, the EasyConnect field test will offer shared-use Segway Human Transporters (HT), electric bicycles, and bicycles linked to a Bay Area Rapid Transit District station and surrounding employment centers in California. Because of safety concerns, research was conducted to understand the risks associated with these modes and potential risk factors. A review of the safety literature indicates that user error is the major cause of low-speed mode crashes, and significant risk factors are poor surface conditions and obstructions to drivers’ vision. As a result, an extensive training program and carefully selected routes have been included in the field test. The regulatory and legislative history of the HT is chronicled to understand how concerns about its interaction with pedestrians have produced legislation that includes specific safety requirements. The low-speed modes used in this project will be equipped with safety devices, and participants will be required to wear helmets. The survey results of 13 HT implementation projects provide insight into potential advantages and challenges to the field test. Results of interviews and meetings with field test stakeholders are presented with a discussion of their influence on the field test design. Finally, conclusions and future project steps are discussed.

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EOR Techniques Tailored to Venezuelan Conventional and Unconventional Oils: Critical Review

Volume 11: Petroleum Technology ◽

10.1115/omae2020-18435 ◽

2020 ◽

Author(s):

Fernancelys Rodriguez M.

Keyword(s):

Oil Production ◽

Mobility Control ◽

Heavy Oils ◽

The North ◽

Viscous Oil ◽

Fluid Systems ◽

Producer Country ◽

Chemical Eor ◽

Gas Flooding ◽

Compositional Gradients

Abstract Venezuela has been ranked as a potential oil producer country thanks to its huge reserves of conventional and unconventional oils. Conventional reservoirs with complex fluid systems, located in the North of Monagas state, where it is possible to observe thick fluid columns with significant compositional gradients (showing changes from gas condensate to non-mobile oil-Tar mat). In these types of reservoirs EOR methods such as miscible gas flooding have been successfully applied to compensate pressure decline and avoid asphaltene deposition issues. Production of unconventional oils, the largest highly-viscous oil reservoir of La Faja Petrolifera del Orinoco (La FPO), demands great challenges. Discovered in the 1930’s, the first rigorous evaluations of this reservoir started in the 1980s [1]; those huge deposits of highly viscous oils were considered technically and economically unattractive at that time. Due to production decline of conventional oil reservoirs, efforts are being done by the Venezuelan National Oil Company and collaborators to develop EOR projects to achieve increasing oil production in unconventional (heavy and extra-heavy) reservoirs, being the most promising options thermal and chemical EOR methods. Some authors agree that in the FPO, only 40–65% (depending on the site) of the oil-bearing formations is suitable for thermal EOR methods. Recent works have been showing the potential of chemical EOR for extra-heavy oils in La FPO [2, 3, 4, 5, 6, 7, 8, 9], mostly for mobility control and mobilization of residual oil. This work presents a literature review of the EOR projects in Venezuela for conventional and highly viscous oils, based on both lab and field experiences, and the perspectives for applications to increase Venezuelan oil production.

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The Effect of Intermittent Low Speed Mode Upon Aortic Valve Opening in Calves Supported With a Jarvik 2000 Axial Flow Device

ASAIO Journal ◽

10.1097/01.mat.0000155708.75802.c7 ◽

2005 ◽

Vol 51 (2) ◽

pp. 139-143 ◽

Cited By ~ 37

Author(s):

Egemen Tuzun ◽

Igor D. Gregoric ◽

Jeff L. Conger ◽

Kenny Golden ◽

Robert Jarvik ◽

...

Keyword(s):

Aortic Valve ◽

Axial Flow ◽

Low Speed ◽

Jarvik 2000 ◽

Flow Device ◽

Valve Opening ◽

Speed Mode

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NON-STATIONARY HIGH VISCOUS OIL PRODUCTION FROM THE VERTICALLY FRACTURED CARBONATE RESERVES

18th International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration and Mining ◽

10.5593/sgem2018/1.1/s01.082 ◽

2018 ◽

Author(s):

Irina Guskova

Keyword(s):

Oil Production ◽

Viscous Oil ◽

Fractured Carbonate

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SPECIFICS OF VISCOUS OIL PRODUCTION USING A DRAIN-HOLE WELL

Oil and Gas Studies ◽

10.31660/0445-0108-2016-3-114-119 ◽

2016 ◽

pp. 114-119

Author(s):

I. V. Chizhov

Keyword(s):

Oil Recovery ◽

Oil Production ◽

High Viscosity ◽

Viscous Oil ◽

Drain Hole ◽

High Viscosity Oil

The article is devoted to the problem of increasing the efficiency of high viscosity oil recovery from low permeable beds.

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Field Realization of Adaptive Reservoir Simulation for Steam Injection Forecasting

10.2118/207295-ms ◽

2021 ◽

Author(s):

Stanislav Ursegov ◽

Evgenii Taraskin ◽

Armen Zakharian

Keyword(s):

Oil Recovery ◽

Oil Production ◽

Steam Injection ◽

Carbonate Reservoirs ◽

Base Case ◽

Simple Liquid ◽

Limited Information ◽

Viscous Oil ◽

Production Wells ◽

Liquid Displacement

Abstract Globally, steam injection for heavy and high-viscous oil recovery is increasing, including carbonate reservoirs. Lack of full understanding such reservoir heating and limited information about production and injection rates of individual wells require to forecast steam injection not only deterministic and simple liquid displacement characteristic modeling types, but also the data-driven one, which covers the adaptive modeling. The implementation and validation of the adaptive system is presented in this paper by one of the world's largest carbonate reservoirs with heavy and high-viscous oil of the Usinsk field. Steam injection forecasting in such reservoirs is complicated by the unstable well interactions and relatively low additional oil production. In the adaptive geological model, vertical dimensions of cells are similar to gross thicknesses of stratigraphic layers. Geological parameters of cells with drilled wells do not necessarily match actual parameters of those wells since the cells include information of neighboring wells. During the adaptive hydrodynamic modeling, a reservoir pressure is reproduced by cumulative production and injection allocation among the 3D grid cells. Steam injection forecasting is firstly based on the liquid displacement characteristics, which are later modified considering well interactions. To estimate actual oil production of steamflooding using the reservoir adaptive geological and hydrodynamic models, dimensionless interaction coefficients of injection and production wells were first calculated. Then, fuzzy logic functions were created to evaluate the base oil production of reacting wells. For most of those wells, actual oil production was 25 – 30 % higher than the base case. Oil production of steamflooding for the next three-year period was carried out by modeling two options of the reservoir further development - with and without steam injection. Generally, forecasted oil production of the option with steam injection was about 5 % higher. The forecasting effectiveness of cyclic steam stimulations of production wells was done using the cross-section method, when the test sample was divided into two groups - the best and the worst, for which the average forecasted oil rates after the stimulations were respectively higher or lower than the average actual oil rate after the stimulations for the entire sample. The difference between the average actual oil rates after the stimulations of the best and the worst groups was 32 %, i.e. this is in how much the actual oil production could have increased if only the best group of the sample had been treated.

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Advantages and disadvantages of high-speed bucket elevators as compared to the low-speed ones

Forestry Engineering Journal ◽

10.12737/8473 ◽

2015 ◽

Vol 4 (4) ◽

pp. 201-205

Author(s):

Шатохин ◽

Ivan Shatokhin ◽

Парфенов ◽

Aleksey Parfenov

Keyword(s):

High Speed ◽

Specific Area ◽

Low Speed ◽

Advantages And Disadvantages ◽

Optimal Speed ◽

Bucket Elevator ◽

Speed Mode

Experiments were carried out, which allowed establishing the optimal speed of the belt with buckets, to reduce feedback rash. The dependence of the mass of the load on the belt of the bucket elevator from its high-speed mode, the dependence of the area of the shoe of the bucket elevator from its high-speed mode and the dependence of the specific area of the shoe of the bucket elevator from its high-speed operation were built. As a result, it was found that high-speed bucket elevators as compared with the low-speed ones have smaller dimensions per unit of performance, and the height of the unit of conveying grain.

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