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Found (569) publications
Application of prediction models to performance of high paraffinic content oilfields: Case study Shen95 Block of Jinganbao Oilfield
Oyinkepreye David Orodu, Zhonghua Tang, Qi Fei
Production performance was curve-fitted for prediction of production and estimation of incremental recovery for waterflooded reservoir. Arguably, simulation may yield non-unique solution or fail due to assumptions on the true effect of high-paraffin content on porosity, saturation, and fluid rheology in the entire formation caused by temperature and solubility effects. The curve-fitting models...
Influence and sensitivity study of matrix shrinkage and swelling on enhanced coalbed methane production and CO2 sequestration with mixed gas injection
Fengde Zhou, Guangqing Yao, Zhonghua Tang and Oyinkepreye D. Orodu
Matrix compressibility, shrinkage and swelling can cause profound changes in porosity and permeability of coalbed during gas sorption and desorption. These factors affect the distribution of pressure, methane production and CO2 sequestration. This paper compares the effects of cleat compression and matrix shrinkage and swelling models with the injection of different compositional gas mixture...
Prediction of crude oil viscosity using feed. Forward back-propagation neural network (FFBPNN)
F. A. Makinde, C.T. Ako, O. D. Orodu and I. U. Asuquo
Crude oil viscosity is an important governing parameter of fluid flow both in the porous media and in pipelines. So, estimating the oil viscosity at various operating conditions with accuracy is of utmost importance to petroleum engineers. Usually, oil viscosity is determined by laboratory measurements at reservoir temperature. However, laboratory experiments are rather expensive and in most ca...
Simulation Study on Waterflood Front: Block Hade of Tarim Oilfield in NorthWest China
Wei Zhou, D.S. Ma, Oyinkepreye D. Orodu, Zhonghua Tang
Block Hade consist of a deep thin sandstone reservoir of two sub-layer reservoirs. The thickness is about 1.5 m for each layer. The two-layer “staircase” horizontal well is used for recovery. In order to determine water displacement front and edge water movement, tracer test is conducted in the reservoir. But the cycle of field tracer monitoring is about 150-360 days. This prevented the efficie...
Oluwagbemi et al.,
The role of competition on the pricing decision of an organisation and the attainment of the organisational objective
Obigbemi Imoleayo Foyeke
Pricing decision has been a crucial decision made by all business enterprises at all levels and has posed a great challenge for Small and Medium Enterprises in Nigeria. This research work treats the role of competition on the pricing decision of an organisation and the attainment of the Organisational Objective, a study of SMEs in Nigeria. The methodology adopted was the survey and empirical ap...
EFFECT OF OILFIELD SULPHATE SCALES ON PRODUCTIVITY INDEX
Fadairo A. S. Adesina∗, C. T. Ako, Omole Olusegun and falode
The precipitation and deposition of scale pose serious injectivity and productivity problems. Several models have been developed for predicting oilfield scales formation and their effect on deliverability of the reservoir to aid in planning appropriate injection water programme. In this study an analytical model has been developed for predicting productivity index of reservoir with incidence of...
Prediction of Elemental Sulphur Saturation around the Wellbore
Fadairo Adesina1, Ako Churchill2
Sour gas reservoirs with high content of hydrogen sulfide are distributed widely around the world. Solid elemental sulfur which dissolves in the gas phase originally in the reservoir in form of sulphur compound, may deposit when the thermodynamic conditions of the temperature, pressure or composition changes in the process of production. Deposition of solid elemental sulfur may block the pores...
MODELING OF WAX DEPOSITION DURING OIL PRODUCTION
*Fadairo Adesina1, Ameloko Anthony1, Ako Churchill1, Duyilemi Olawale2
Wax deposition is a serious problem in the Petroleum Industry that results in the plugging of flow strings, formation damage, loss of hydrocarbons, increased production cost. The existing models used in the oil industry for predicting wax phase equilibrium parameters over-estimate the amount of wax that is formed in terms of the wax weight fraction and the number of moles of solid. The Couti...
The Nigerian Press Coverage of Political Conflicts in a Pluralistic Society.
Ekeanyanwu, N. T.