|
|
| new publications |
04.07.08, I.N. Frolov, T.N. Yusupova, Yu.M. Ganeeva, E.E.Barskaya, G.V. Romanov
THE PHYSICAL-CHEMICAL PECULIARITIES OF OLEFINE THERMOELASTOPLAST-MODIFIED BITUMENS
http://www.ogbus.ru/authors/Frolov/Frolov_1.pdf (in Russian)
The comparative analysis of both chemical composition and physical-mechanical properties of 90/130 penetration-grade bitumens derived from the Tatarstan (Romashkinskoe oil field) (A) and Kazakhstan (B) oils was performed. The difference in disperse structure was found. Differential scanning calorimeter was used to investigate the phase constitution of bitumens and composition on their basis. The modification effect was found to be reduced to enhancing the intrinsic colloid structure of bitumen and may be discussed in terms of thermodynamics of phase formation of polymer solutions. It is shown that hydro isolation material on the basis of B bitumen with gel-type structure possesses better service performance as compared with that on the basis of A bitumen with sol-type structure.
|
02.07.08, Ahmed Gawish, Emad Al-Homadhi
RELATIVE PERMEABILITY CURVES FOR HIGH PRESSURE, HIGH TEMPERATURE RESERVOIR CONDITIONS
http://www.ogbus.ru/eng/authors/Gawish/Gawish_1.pdf
The Objective of this paper is to clearly investigate the effect of some factors on oil- water relative permeability curves under certain reservoir pressure and temperature. In litreture, the effect of different factors on relative permeability of oil-water systems have been studied under ambient room conditions. However, treatments studies dealing with the effect of factores under reservoir conditions are few. Therefore, in this study, wettability alterations, brine chemistry, clay content, and their impacts on relative permeability curves under particular reservoir pressure and temperature were studied. Pore pressure, pore pressure drawdown and their combined effect with overburden stress and brine chemistry on relative permeability curves were also investigated at reservoir conditions. The relative permeability was calculated using JBN method.
In conclusions, the change of wettability from water wet to mixed wet gives relatively higher relative permeability to oil at high and medium oil saturation in the core samples. But at low oil saturation the relative permeability to oil becomes lower in mixed wet than in water wet.
At reservoir temperature, the oil relative permeability increases at all oil saturations compare with room conditions. This effect may be not due to the change in wettability but due to the change in viscosity ratio.
The effect of clay content on all permeability types (absolute, effective, relative permeability, relative permeability ratio, and fractional water flow) was bad due its damaging effect.
The increase of net overburden pressure cause decrease in the relative permeability of oil, however, its effect on relative permeability of water was negligible
|
30.06.08, A.F. Shakurova
FRACTURE APPLICATION EFFECTIVENESS ANALYSIS ON BAVLY OILFIELD
http://www.ogbus.ru/authors/Shakurova/Shakurova_1.pdf (in Russian)
There is performance analysis of applying hydraulic seam fracture for increasing oil recovery of different terrigenous collectors on Bavly oilfield. It is explored the influence filtration-capacitive collector properties on oilcovery growth later on hydraulic seam fracture. It is shown that effectiveness of this technology depends not only on indicated characteristics but on rheology and conditions of hydraulic seam fracture.
|
14.06.08, D.V. Dolgov
WATER-GAS MIXTURE STABILITY FACTOR FOR PIPELINES
http://www.ogbus.ru/authors/Dolgov/Dolgov_3.pdf (in Russian)
The expression of the gas-liquid mixture stability factor for horizontal pipelines is defined. It allows calculating the maximum diameter of gas bubbles at which they are held up in the turbulent flow.
The empirical value for a coefficient of proportionality used in the expression of the dependence of bubbles maximum diameter on the stability factor is found. The stability factor amounts 0.64.
To calculate the length of a pipeline where breaking of the water-gas mixture at given bubbles diameter, pipe diameter, flow rate, viscosity and density occurs a corresponding dependence is found.
|
11.06.08, A. Atnagulov, I. Ishemguzhin, A. Zotov, E. Ishemguzhin
BAYES METHOD APPLICATION AT THE ESTIMATION OF PROBABILITY "FLIGHT" SUBMERSIBLE DRIVE PUMP UNIT ON THE BOTTOM HOLE
http://www.ogbus.ru/authors/Atnagulov/Atnagulov_1.pdf (in Russian)
At operation of hole by electrocentrifugal pump installations on pump plant the various factors leading failures of type operate "flight" (partition and breakage submersible the equipment on the bottom hole) which account will allow with sufficient accuracy to estimate a technical condition of the unit. Authors offer to use Bayes method applied in the theory of reliability, allowing to consider conditions of operation and most authentically to judge reliability of the pump equipment.
|
09.06.08, L.A. Kovaleva, R.Z. Minnigalimov, R.R. Zinnatullin
ABOUT THE EFFICIENCY OF OIL SLIMES UTILIZATION BY THE RADIO-FREQUENCY ELECTROMAGNETIC FIELD
http://www.ogbus.ru/authors/Kovaleva/Kovaleva_1.pdf (in Russian)
The problem of oil slimes utilization is considered. The results of experimental researches of the dielectric characteristics of oil slimes samples under electromagnetic influence are given. The oil slimes destruction efficiency was also estimated.
|
07.06.08, D.V. Dolgov
ON CALCULATION OF THE GAS CONTENT FOR THE POTOCHNOYE OIL FIELD
http://www.ogbus.ru/authors/Dolgov/Dolgov_2.pdf (in Russian)
Experimental studies of differential liberation for oils from the BV-10, BV-18, BV-22 zones of the Potochnoye oil field were conducted. It was revealed that the degassing curves are linear and have different angles of inclination and the full value of gas-oil ratio at a pressure of 1MPa. Straight-line portions of the curves cross the gas-oil curves in the same point - 14.5 m3/m3. It allowed us to establish universal dependence of the gas content on the degassing pressure, gas-oil ratio and saturation pressure.
|
02.06.08, I.K. Ivanova, E.Yu. Shitz
HYDROCARBON SOLVENTS ON THE HEXANE BASE FOR OIL ORGANIC DEPOSITS ELIMINATION OF THE IRELYAKH GAS AND OIL FIELD
http://www.ogbus.ru/eng/authors/Ivanova/Ivanova_2e.pdf (in English)
http://www.ogbus.ru/authors/Ivanova/Ivanova_2.pdf (in Russian)
The group composition of asphaltene-resin-paraffin deposits (ARPD) in the Irelyakh field and their solubility in the composite solvents on the hexane base with the additives consisting of nonionic surface-active substances (NSAS) and concentrates of aromatic hydrocarbons is determined. The results of the investigations show that the additives Neonol AF-9-10 and liquid products of pyrolysis (LPP) are most efficient. The use of these additives allows to increase the efficiency of ARPD breaking and dissolving by 1,3 - 1,6 times as compared with a base solvent. It is shown that the increase in the concentration of individual additives from 0,5 to 3% causes a decrease in the efficiency of detergent compounds.
|
02.06.08, D.V. Dolgov
INFLUENCE OF THE DISTANCE BETWEEN A NOZZLE AND A MIXING CHAMBER ON THE LIQUID-GAS EJECTOR EFFICIENCY
http://www.ogbus.ru/authors/Dolgov/Dolgov_1.pdf (in Russian)
The influence of the distance between a nozzle and a mixing chamber on the liquid-gas ejector efficiency is experimentally studied and described in this paper. The liquid-gas ejectors are used to utilize associated gas. The experiments conducted on the laboratory bench made it possible to estimate the optimal distance between a nozzle and a mixing chamber. The maximum value of the isothermal efficiency was recorded when the ratio of the distance between a nozzle and a mixing chamber to the diameter of a mixing chamber ranged from 3.4 to 3.7. This optimum ratio does not depend on the ejector operating conditions nor on the operating pressure in a nozzle. This ratio value is recommended for the design of liquid-gas ejectors.
|
26.05.08, N.G. Nurgalieva, I.Y. Chernova, D.K. Nurgaliev
"LINGULOVYE" MUDSTONES: THE LITHOLOGICAL FEATURES OF THE REGIONAL MARKER
http://www.ogbus.ru/eng/authors/Nurgalieva/Nurgalieva_2e.pdf
http://www.ogbus.ru/authors/Nurgalieva/Nurgalieva_2.pdf (in Russian)
In present paper it have been considered the lithology of "Lingulovye" mudstones complex. This complex attributes to the Lower Kazanian formation and forms regional marker in Republic Tatarstan. "Lingulovye" mudstones accumulated within vast epicontinental sedimentary basin during Early Kazanian transgressive phase at the East of Russian plate. In this paper it was analyzed the petrographic composition of "Lingulovye" mudstones and it was also considered the map of thickness of this complex within Eastern part of Republic Tatarstan. This analysis allowed to determine a regional role of "Lingulovye" mudstones for palaeoenvironmental reconstructions and hydrocarbon reservoirs history. The analysis of the natural reservoirs of hydrocarbons in the lithologic aspect is one of the basic tasks during the explanation of their formation, the revealing of geological factors of distribution the hydrocarbon deposits, for example, the deposits of high-viscosity oils and bitumens in the Permian deposits of Republic Tatarstan. In this article the lithologic special features of the regional seal reper "Lingulovye" mudstones are examined.
|
24.05.08, K.B. Batmanov
STUDY TO OILS AND CONDENSATE KARACHAGANAKSKOE FIELD
http://www.ogbus.ru/authors/Batmanov/Batmanov_1.pdf (in Russian)
In given job reflected complications, which has place at production oil, gas and condensate on bigger in world oilgascondensate field Karaсhаganak.
The Oils field Karachaganak parafinish, contents of the paraffin in oils 3,1-12,4%, but in condensate - 1,9-5,6%, this causes postponing the paraffin in underground and overland equipment that negative influences upon process of the mining to oils and condensate. In work reflected methods fights with postponing the paraffin on technological equipment.
In process of the mining the gas and condensate in system infield connector and transport appear the hydrate plugs, which complicate the transport hydrocarbon cheese on pipe line.
|
22.05.08, V.A. Ostreikovskiy, Ya.V. Silin
STATISTICAL RELIABILITY ANALYSIS OF OIL-FIELD PIPELINES
http://www.ogbus.ru/authors/Ostreikovskiy/Ostreikovskiy_1.pdf (in Russian)
The work is devoted to improvement of methods for statistical reliability analysis of oil-field pipelines. Existing methods for estimating probability of no-failure and new method for estimating probability of no-failure in dependence of pipeline length are given. Statistical data about oil-field pipelines failures in Western Siberia was analyzed. Probability of no-failure was calculated according to given methods.
|
17.05.08, Yu.Yu. Fyodorov, A.V. Savvina
STRESS-STRAIN PROPERTIES OF UNDERGRAUND GAS PIPELINES UNDER THE CONDITIONS OF THE PERMAFROST
http://www.ogbus.ru/authors/Fyodorov/Fyodorov_1.pdf (in Russian)
Forecasting of stress-strain state of underground polyethylene gas pipeline under the conditions of the permafrost is carried out. The results of the analysis of the pipe bending stresses caused by ununiforn swelling of grounds. Account for existence of satisfactory strength of the material. It was shown that long-term influence of bending stress together with viscoelastic properties of the material at real operation temperature in the course of time decreases stresses occurring in it.
The investigation is supports by RFBR, project №03-01-96018.
|
16.05.08, Adeel Ahmad, Mithilesh Kumar Jha
STATUS OF PETROLEUM SECTOR IN PAKISTAN - A REVIEW
http://www.ogbus.ru/eng/authors/AdeelAhmad/AdeelAhmad_1.pdf
Pakistan economy is growing steadily. This growth demands higher energy consumption and consequently putting high pressure on countries economy. Pakistan mainly depends upon oil and gas resources to fulfil energy requirements .Indigenous resources of Oil are not enough to quench energy thirst of the growing economy. As a result Pakistan has to import large quantity of oil and oil based products from Middle East countries. Gas reserves in the country are enough for current gas requirements. So natural gas is playing a key role in power sector. Currently in oil upstream and down stream sector there are some local and international companies involved and government of Pakistan is establishing such policies that it can attract more international investors in this sector but the rapid pace of change, high degree of uncertainty and unstable political situation of the country present significant challenges and risk to foreign investment .Objective of this paper to highlight the present status of petroleum industry in Pakistan and its future prospects keeping in view the internal fluid situation and geo political condition of the region.
|
13.05.08, A.F. Fyodorova, E.Yu. Shits, A.S. Portnyagin
STUDY OF POSSIBLE USING THE POLYMER SOLUTIONS AS AGENTS OF OIL DISPLACEMENT IN THE FIELDS WITH ABNORMALLY LOW RESERVOIR TEMPERATURES
http://www.ogbus.ru/eng/authors/Fyodorova/Fyodorova_2e.pdf (in English)
http://www.ogbus.ru/authors/Fyodorova/Fyodorova_2.pdf (in Russian)
Rheological, structural and oil displacing properties of the solutions of polyacrylamide (PAA) and carboxymethylcellulose (CMC) are fully investigated in the conditions of abnormally low reservoir temperatures. Physico-chemical processes occurring at a contact of highly mineralized formation water with the polymer solutions of PAA and CMC, which are different in composition, in the pore space of the reservoir are studied. The possibility of increasing the efficiency of hydrodynamic influence on the reservoir in the conditions of the fields of the southwest Yakutia due to the use of displacing compounds on the water-soluble polymer base is established experimentally.
|
05.05.08, K.K. Argunova, E.A. Bondarev, V.E. Nikolaev, I.I. Rozhin
DETERMINATION OF INTERVAL OF HYDRATE FORMATION IN WELLS DRILLED IN PERMAFROST ROCKS
http://www.ogbus.ru/authors/Argunova/Argunova_2.pdf (in Russian)
An approach to predictions of position and size of hydrate plugs inside tubes of gas wells has been proposed. It is based on the mathematical model of steady non-isothermal flow of real gas in tubes and on an algorithm of calculation of equilibrium conditions of hydrate formation for gas mixture content being given. Examples are given demonstrating applicability of the approach to analysis of actual situations.
|
30.04.08, K.K. Argunova, E.A. Bondarev, V.V. Popov, I.I. Rozhin
ON SIMULATION OF CASE HISTORY OF THE MESSOYAKHA GAS FIELD
http://www.ogbus.ru/authors/Argunova/Argunova_1.pdf (in Russian)
На примере истории разработки Мессояхского газового месторождения Красноярского края и Средне-Ботуобинского газоконденсатного месторождения Республики Саха (Якутия) продемонстрированы возможности математического моделирования для прогноза возможного образования гидратов в призабойной зоне газоносных пластов. Используемая модель основана на теории многофазной неизотермической фильтрации с учетом массообмена между фазами. Ее составной частью является методика расчета равновесных условий гидратообразования по известному компонентному составу газовой смеси.
|
30.04.08, V.E. Bugera
ECONOMICAL PREMISES OF THE THIRD DIVISION OF THE WORLD
http://www.ogbus.ru/authors/Bugera/Bugera_3.pdf (in Russian)
We have analyzed real histories of gas production from two gas fields of the Russian North with particular attention to the possibilities of hydrate formation in the bottom-hole zones of gas wells. The simulation of the cases has been used to find out the effects of the fields parameters, particularly initial pressure and temperature and gas mixtures composition. The corresponding mathematical model is based on the theory of non-isothermal multiphase flow in porous media with mass exchange between gas, water and hydrate. It includes a method of calculation of gas hydrate equilibrium conditions for a given gas mixture.
|
|
|
| News |
14.09.07
2nd Annual Oil & Gas Project Risk Management ...>
|
14.05.07
Oil & Gas Legal Congress 2007 ...>
|
13.05.07
Drilling Waste Management China 2007 conference ...>
|
25.04.07
Effective Plant Shutdown & Turnaround Planning, 3-Day Course ...>
|
12.04.07
Oil & Gas IQ’s Drilling Safety Management 2007...>
|
11.04.07
Oil & Gas IQ’s Horizontal & Multilateral Wells Asia 2007...>
|
| Ads |
|
|
|
|
|
