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Article
Publication date: 13 February 2017

Adesina Fadairo, Olusegun Oyedele-Adeyi, Adebowale Oladepo and Ogunkunle Temitope

The production of natural gas from the reservoir is always associated with entrained solid particle of different sizes mainly sand particles and crystalline salts. Entrained solid…

65

Abstract

Purpose

The production of natural gas from the reservoir is always associated with entrained solid particle of different sizes mainly sand particles and crystalline salts. Entrained solid transport along the gas phase has been a great concern for gas production engineer, as the detrimental consequences are often associated to a desirable high operational parameters such rate and pressure transverse in producing well.

Design/methodology/approach

A variety of models for predicting pressure transverse in flowing gas wells have been reported in the literatures. Most of the models were based on steady state fluid flow equation that did not consider time factor which results in inaccurate at early production time. Some of the early investigators overlooked the effect of the entrained solid on the pressure transverse phenomena in a gas well. Hence, there is a need for developing a more realistic model for estimating pressure transverse at all times in flowing solid-gas vertical well.

Findings

This study presents equation for pressure drop in flowing vertical well without neglecting any term in the momentum equation by the inclusion of accumulation and kinetic term. The solution of the resulting differential equation gives functional relationship between solid-gas flow rates and pressure at any point in flowing well at any given production time.

Originality/value

The results show improvement over previous studies, as the assumptions previously neglected were all considered.

Details

World Journal of Engineering, vol. 14 no. 1
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 2 October 2017

Adesina Fadairo, Olusegun Oyedele-Adeyi, Adebowale Oladepo and Temitope Ogunkunle

The purpose of this study showcase a realistic model for estimating pressure drop at any production time in any location along the vertical flowing solid-gas well. Also to…

50

Abstract

Purpose

The purpose of this study showcase a realistic model for estimating pressure drop at any production time in any location along the vertical flowing solid-gas well. Also to simulate the impact of solid particles on the pressure transient in gas well. The production of natural gas from the reservoir is always associated with entrained solid particle of different sizes, mainly sand particles and crystalline salts. Entrained solid transport along the gas phase has been a great concern for gas production engineer, as the detrimental consequences are often associated to desirable high operational parameters, such as rate and pressure transverse in producing well.

Design/methodology/approach

A variety of early models for predicting pressure transverse in gas wells were based on steady state flow equation that did not consider time factor, which results in inaccuracy at early production time. Some of the early investigators overlooked the effect of the solid on the pressure transverse phenomena in a gas well. Hence, there is a need for developing a model for estimating pressure transverse at all times in solid–gas well. This study presents an equation for pressure drop in flowing vertical well without neglecting any term in the momentum equation by the inclusion of accumulation and kinetic term.

Findings

The solution of the resulting differential equation gives functional relationship between solid–gas flow rates and pressure at any point in flowing well at any given production time. The results show improvement over previous studies, as the assumptions previously neglected were all considered.

Originality/value

A more realistic result that includes the initial unsteadiness phenomenon is obtained; hence, predicting pressure transient at any given production time has been established for both gas that flows along with solid particles and gas without particles. At the onset of production, the effect of all possible wellbore pressure losses is highly pronounced and decreased as the production time increases. The newly developed model, however, can be used at all depths. The effect of using the Sukkar and Cornell model is extremely adverse for the calculation of other parameters, such as flow rate, and carrying out economic analysis.

Details

World Journal of Engineering, vol. 14 no. 5
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 20 September 2019

Joseph Ikechukwu Uduji, Elda Nduka Okolo-Obasi and Simplice Anutecia Asongu

The purpose of this paper is to critically examine the impact of a growth enhancement support scheme (GESS) on the enabling environment of smallholder farmers in sub-Saharan…

475

Abstract

Purpose

The purpose of this paper is to critically examine the impact of a growth enhancement support scheme (GESS) on the enabling environment of smallholder farmers in sub-Saharan Africa. The main aim is to investigate the impact of the GESS on access to rural farm credit and the transport cost of smallholder farmers in the agricultural transformation agenda (ATA) in Nigeria.

Design/methodology/approach

This paper adopts a survey research technique, aimed at gathering information from a representative sample of the population, as it is essentially cross-sectional, describing and interpreting the current situation. A total of 1,200 were sampled across the six geopolitical zones of Nigeria.

Findings

The results from the use of a double-hurdle model indicate that the GESS has a significant impact on farmers’ access to credit, but does not significantly impact on rural farm transport cost, which subsequently influences the price of food in the country.

Practical implications

This implies that if the Federal Government of Nigeria is to work toward an ideal agricultural transformation agenda, transport networks should be closely aligned with the GESS priorities to provide connectivity to rural areas that provide most of the country’s agricultural output.

Originality/value

This research adds to the literature on the agricultural and rural development debate in developing countries. It concludes that embracing a rural finance and transportation infrastructure should form the foundation of the ATA in Nigeria, which, in turn, would provide a conducive environment for a more widespread rural economy in sub-Saharan Africa.

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Article
Publication date: 1 February 2021

Joseph Ikechukwu Uduji, Elda Nduka Okolo-Obasi and Simplice Anutechia Asongu

The purpose of this paper is to critically examine the impact of a growth enhancement support scheme (GESS) on youth development in informal farm entrepreneurship in Nigeria. Its…

289

Abstract

Purpose

The purpose of this paper is to critically examine the impact of a growth enhancement support scheme (GESS) on youth development in informal farm entrepreneurship in Nigeria. Its special focus is to investigate the impact of the GESS on rural youths’ adoption of new technologies needed to sustainably increase food security in Nigeria.

Design/methodology/approach

This paper adopts a survey research technique, aimed at gathering information from a representative sample of the population, as it is essentially cross-sectional, describing and interpreting the current situation. A total of 800 rural youths were sampled across the six geopolitical zones of Nigeria.

Findings

The result from the use of a bivariate probit model indicates that the GESS has a significant impact on rural youths’ innovations in farming.

Practical implications

This suggests that information and communication technology could provide new opportunities for making farming more interesting and enterprising for rural young people.

Social implications

It implies that while old male and female farmers are less likely to adopt the new farming technologies needed to achieve Nigeria’s agricultural transformation agenda (ATA), a younger generation can help introduce new technologies, while also learning from traditional methods.

Originality/value

This research adds to the literature on informal farm entrepreneurship and rural communities’ debate in developing countries. It concludes that engaging youths in GESS should form the foundation of the ATA in Nigeria, which, in turn, would offer adequate combination of new and traditional solution to address the challenges of food insecurity in Sub-Saharan Africa.

Details

Journal of Enterprising Communities: People and Places in the Global Economy, vol. 15 no. 3
Type: Research Article
ISSN: 1750-6204

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