Journal of Petroleum and Gas Engineering最新文献

Reservoir characterization of an x-field, offshore Niger Delta, Nigeria, using well data 利用井资料对尼日利亚尼日尔三角洲近海某x油田进行储层特征描述

Journal of Petroleum and Gas Engineering Pub Date : 2023-07-31 DOI: 10.5897/jpge2023.0369

T. K. Alasi, G. Z. Ugwu, G. E. Onyishi

引用次数: 0

Pipe irregularities mapping using tomographic instrumentation system 利用层析成像仪器系统测绘管道不规则性

Journal of Petroleum and Gas Engineering Pub Date : 2021-10-31 DOI: 10.5897/jpge2021.0349

Z. Z., Idroas M., K. M, Abu Bakar H., Samsuri A., Ismail I.

{"title":"Pipe irregularities mapping using tomographic instrumentation system","authors":"Z. Z., Idroas M., K. M, Abu Bakar H., Samsuri A., Ismail I.","doi":"10.5897/jpge2021.0349","DOIUrl":"https://doi.org/10.5897/jpge2021.0349","url":null,"abstract":"Formation of irregularities on the inner surface of pipes is a common phenomenon that leads to corrosion and affects the functionality in the processing industries. Ultrasonic is known as one of the non-destructive means to address the formation of irregularities inside pipes. In this study, an ultrasonic measurement system is developed to detect the presence of internal irregularities in a pipe. An ultrasonic sensor EFC16T/R-2 with a frequency of 40 kHz was mounted outside the test pipe with a circular ring sensor unit. Different conditions of the inner pipe surface had caused fluctuations of the ultrasonic signal. The results show a low output voltage in the range of 2.1333 to 3.1334 V when no irregularities were detected. A higher output voltage was observed in the range of 5.4677 to 8.8667 V when irregularities occurred. The reconstructed images of irregularities had matched the actual condition of the pipe. Some images showed a slight inaccuracy of the position of the irregularities caused by the instability of the ultrasonic signals. Overall, the developed ultrasonic tomography is suitable as a tool for monitoring irregularities in a pipe.","PeriodicalId":332748,"journal":{"name":"Journal of Petroleum and Gas Engineering","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114803806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental investigation of flame propagation mitigation using woven wire and perforated metal meshes in circular pipe 圆管内编织丝和穿孔金属网抑制火焰传播的实验研究

Journal of Petroleum and Gas Engineering Pub Date : 2021-08-31 DOI: 10.5897/jpge2021.0353

A. Abdullahi

{"title":"Experimental investigation of flame propagation mitigation using woven wire and perforated metal meshes in circular pipe","authors":"A. Abdullahi","doi":"10.5897/jpge2021.0353","DOIUrl":"https://doi.org/10.5897/jpge2021.0353","url":null,"abstract":"Explosions due to gas leaks from accidents and human errors are major concerns faced in natural gas and related industries. Understanding its formation and dissociation mechanisms at field conditions is keys to its successful prevention and management. In the present study, two different meshes with different sized flow channels were proposed to prevent and control methane combustion in a circular gas pipeline. The perforated metal steel of 6 mm aperture and woven wire steel mesh with 1.31 mm aperture, 0.28 mm wire diameter installed in between the flange positioned 2000 mm in a 6300 mm horizontal circular pipe were used. The effects of propagated flame flow temperature variation and equivalence ratio on wire gauze combustion have been investigated and analyzed experimentally. Methane-air mixture at variable concentrations within the lower and upper flammability ranges of 6 and 9% were used in creating an explosive mixture through the pipe length. The parameters investigated were measured and recorded. The results indicated that the inflated period for methane-air concentrations and mesh sizes varied significantly with time. The wall temperature decreased with a decrease in mesh size. The woven wire and perforated plate on flame propagation showed greatly the mitigating capability of the meshes, with a flame temperature declining tremendously. Therefore, woven wire and perforated sheets installed in gas pipelines can reduce explosion risks efficiently and effectively. However, woven wire mesh is preferable because it declines the flame temperature compared to the perforated metal mesh. \u0000 \u0000 Key words: Explosion, combustion, flame propagation, temperature, steel meshes (Woven wire and perforated plate).","PeriodicalId":332748,"journal":{"name":"Journal of Petroleum and Gas Engineering","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122904882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical modelling of heat and mass transfer in a gas pipe conducting system: Application to methane gas 气体管道传导系统中传热传质的数值模拟:在甲烷气体中的应用

Journal of Petroleum and Gas Engineering Pub Date : 2021-05-31 DOI: 10.5897/JPGE2021.0354

S. Bell, René Oum Lissouck, Rachel Raïssa Ngono Mvondo

引用次数: 0

An experimental approach to the descaling of production tubing using high pressure flat fan nozzles 采用高压扁平风扇喷嘴对生产油管进行除垢的实验研究

Journal of Petroleum and Gas Engineering Pub Date : 2021-01-31 DOI: 10.5897/JPGE2020.0346

Kabir. H. Yar’Adua, A. Abbas, Salihu M. Suleiman, A. A. Ahmadu, A. Kabir

{"title":"An experimental approach to the descaling of production tubing using high pressure flat fan nozzles","authors":"Kabir. H. Yar’Adua, A. Abbas, Salihu M. Suleiman, A. A. Ahmadu, A. Kabir","doi":"10.5897/JPGE2020.0346","DOIUrl":"https://doi.org/10.5897/JPGE2020.0346","url":null,"abstract":"The mechanical approach of utilizing high-pressure water for scale removal has gained wider acceptance by multinationals despite facing poor downhole performance challenges (cavitation) that need abrasion compensation (sand) with side effect of jeopardizing the integrity of the well completions. The replacement of sand with sterling beads was excellent with good post descaling well completion integrity at the expense of environmental complexity. While the recent single nozzle, solid free aerated jetting descaling technique was characterized with poor scale coverage and high descaling time. This investigation presents the novel technique of scale removal utilizing multiple high-pressure flat fan nozzles at different distances, nozzle configurations and injection pressure to remove soft scale sample made of paraffin. The scale shaped in two different patterns of hollow and solid signifying different growth stages of paraffin in production tubing. The results at 25 mm stand-off distances showed that the scale removal was within the range of 0.8 to 42.8 g (for hollow shape scale) and 0.3 to 5.2 g (for solid shape scale) at 4.8 MPa with different nozzle configurations. Increasing the injection pressure to 6 MPa removed more scale within the range of 1.1 to 93.7 g (for hollow shape scale) and 0.7 to 7.3 g (for solid shape scale). Moreover, at 10 MPa injection pressure the scale removal was within the range of 1.1 to 253.8 g (for hollow shape scale) and 1.1 to 103.7 g (for solid shape scale). This result will provide a practical approach to the removal of organic scales at varying descaling conditions of injection pressure, standoff distance and nozzle configurations. \u0000 \u0000 Key words: Scale removal, multiple nozzles, high-pressure water spray, flat-fan nozzle.","PeriodicalId":332748,"journal":{"name":"Journal of Petroleum and Gas Engineering","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126154293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Software approach on crude oil yields prediction: A case study of Tema Oil Refinery 原油产量预测的软件方法——以特马炼油厂为例

Journal of Petroleum and Gas Engineering Pub Date : 2019-10-31 DOI: 10.5897/JPGE2019.0312

S. A. Marfo, Prince Opoku Appau, Daniel Tettegah

引用次数: 1

Evaluating the performance of ultrasound energy on improved oil recovery using MATLAB reservoir simulation toolbox (MRST) 利用MATLAB油藏模拟工具箱(MRST)评价超声能量对提高采收率的效果

Journal of Petroleum and Gas Engineering Pub Date : 2019-09-30 DOI: 10.5897/jpge2019.0311

U. Hassan, J. Ajienka, Alhaji Dodo Ibrahim Sulaiman

{"title":"Evaluating the performance of ultrasound energy on improved oil recovery using MATLAB reservoir simulation toolbox (MRST)","authors":"U. Hassan, J. Ajienka, Alhaji Dodo Ibrahim Sulaiman","doi":"10.5897/jpge2019.0311","DOIUrl":"https://doi.org/10.5897/jpge2019.0311","url":null,"abstract":"There are many processes the oil industry used to recover more oil from the reservoir after the natural energy is depleted. In this research work, ultrasound energy has been tested as a method of improving oil recovery after waterflooding. The method used in this research work was a numerical simulation using MATLAB Reservoir Simulation Toolbox (MRST-2017a). Ultrasound energy source equation was incorporated into the residual energy equation in the MRST. Acoustic attenuation pressure equation was modelled as part of the residual pressure equation in the MRST. Effect of ultrasound waves on pore wall deformation was also modelled from waves stress equation. Two-phase (oil/water) black oil model was used to simulate fluid flow. Results obtained from the simulation runs show that the ultrasound energy has an impact on reservoir performance i.e. increase in fluid flowrates and pore pressure and temperature rise which led to oil viscosity reduction and consequently improve mobility ratio. However, attenuation of ultrasound energy increases with propagation distance, but this effect was compensated by increasing the intensity of the ultrasound power. Though, high power intensity induced stress on the reservoir pore throat. Results obtained also show that high porosity and permeability values affect the performance of the acoustic energy basically due to an increase in the rate of waves absorption. \u0000 \u0000 Key words: Ultrasound energy, improved oil recovery, reservoir simulation toolbox, MATLAB.","PeriodicalId":332748,"journal":{"name":"Journal of Petroleum and Gas Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129020033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A dry gas material balance with an infinite aquifer influence: A comparative study between the unsteady state model of van Everdingen-Hurst and analytical model 具有无限含水层影响的干气物质平衡:van Everdingen-Hurst非稳态模型与解析模型的比较研究

Journal of Petroleum and Gas Engineering Pub Date : 2019-08-31 DOI: 10.5897/jpge2019.0306

Isac In acio Tsamba, L. Lucas, P. Skalle

{"title":"A dry gas material balance with an infinite aquifer influence: A comparative study between the unsteady state model of van Everdingen-Hurst and analytical model","authors":"Isac In acio Tsamba, L. Lucas, P. Skalle","doi":"10.5897/jpge2019.0306","DOIUrl":"https://doi.org/10.5897/jpge2019.0306","url":null,"abstract":"Aquifer water influx is an important natural mechanism for primary recovery. It affects the performance of all types of reservoirs, also natural gas reservoirs. Water influx provides pressure support during reservoir depletion, resulting in slower pressure decline. Consequently, gas reservoirs associated with large aquifers show a flattening, cubic behavior of the p/z vs. Gp curve, which allowed the development of the present analytical model. For modelling of water influx into a reservoir, classical models have been developed by many authors. Among the classical models, the unsteady state method of van Everdingen-Hurst was selected to be used in this work, as this is the best suited in terms of solving the diffusivity equation. In order to use the analytical model for comparative purposes, there was a need of calibrating the two unknown parameters, α and β, appearing in the water influx equation. In this work, two workflows were presented for computing water influx in a comparative manner between the unsteady state model of van Everdingen-Hurst and the analytical model. The results showed that the correlation between both models depends on the two unknown parameters, α and β. \u0000 \u0000 Key words: Infinite aquifer, dry gas material balance, cubic cumulative model, water influx.","PeriodicalId":332748,"journal":{"name":"Journal of Petroleum and Gas Engineering","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126444815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Probabilistic approach for shale volume estimation in Bornu Basin of Nigeria 尼日利亚Bornu盆地页岩体积估计的概率方法

Journal of Petroleum and Gas Engineering Pub Date : 2019-08-31 DOI: 10.5897/JPGE2019.0319

Stephen Adjei, Aggrey N. Wilberforce, D. Opoku, I. Mohammed

{"title":"Probabilistic approach for shale volume estimation in Bornu Basin of Nigeria","authors":"Stephen Adjei, Aggrey N. Wilberforce, D. Opoku, I. Mohammed","doi":"10.5897/JPGE2019.0319","DOIUrl":"https://doi.org/10.5897/JPGE2019.0319","url":null,"abstract":"The gamma ray log has over the years provided the conventional means for shale volume (Vsh) estimation. Knowledge of Vsh is used in the prediction of petrophysical parameters like effective porosity and water saturation, which are the input parameters for the calculation of oil in place. Currently, many studies have been conducted on the Bornu Basin of Nigeria, to access its hydrocarbon potential. Unfortunately, the practice of using best gamma ray log value for the computation of gamma ray index, IGR, and subsequently Vsh estimation incorporates huge uncertainty in the estimated volumes. Uncertainty is best captured when estimates are represented in a possible range rather than single value measurements. To the best of our knowledge, this is the first time shale volume has been estimated from the gamma ray log using sampling techniques. The gamma ray log data of the two upper shaly intervals of the NGAMMAEAST_1 well, which penetrates the Gombe formation of the basin, were utilized for this study. The gamma ray log response of the zone of interest is the uncertain parameter in Vsh estimation. A histogram plot of the uncertain log data was used to assume the probability distribution of the data. In the MATLAB platform, Standard Monte Carlo (MC) and Latin Hypercube sampling techniques were used to model the uncertain log response using random numbers. Possible input log data generated from the distribution of the uncertain log data were used in the linear and non-linear models for shale volume estimation to run a series of simulations to determine the possible range of estimates with their probabilities. The Latin hypercube method has shown to be a quick and accurate alternative method to the standard MC method. The approach presented here sets a guideline for the implementation of a probabilistic approach for the volume of shale estimation. \u0000 \u0000 Key words: Shale volume, Monte Carlo, Latin hypercube, sampling techniques, gamma ray log.","PeriodicalId":332748,"journal":{"name":"Journal of Petroleum and Gas Engineering","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133805426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A statistical approach to investigate oil displacement efficiency in thermal recovery techniques for heavy oil based on one-dimensional core experiment 基于一维岩心实验的稠油热采技术驱油效率统计研究

Journal of Petroleum and Gas Engineering Pub Date : 2019-08-31 DOI: 10.5897/jpge2019.0310

Dong Liu, Yanchun Su, Lizhen Ge, Tinghui Hu, Qin Zhu

{"title":"A statistical approach to investigate oil displacement efficiency in thermal recovery techniques for heavy oil based on one-dimensional core experiment","authors":"Dong Liu, Yanchun Su, Lizhen Ge, Tinghui Hu, Qin Zhu","doi":"10.5897/jpge2019.0310","DOIUrl":"https://doi.org/10.5897/jpge2019.0310","url":null,"abstract":"Precise description of displacement efficiency (Ed) is extremely important for evaluating the performance, economic effectiveness and final recovery of thermal recovery techniques. Current researches mainly focused on one-dimensional core displacement experiment, and it is difficult to obtain precise Ed beyond the range of test points. In addition, there are two ways to improve the Ed for thermal flooding: Increasing injection pore volume (PV) or raising injection temperature (T), it’s hard to make decisions. In this study, the above two problems were solved by a statistical approach research. At the beginning, one dimensional core displacement experiment was carried out for hot water and steam, respectively. Then, dozens of curves and correlations about Ed varied with injection PV number and injection temperature was regressed, respectively. Based on this, the formula of Ed and PV, Ed and T for injection hot water and steam was established respectively, which makes up for the shortage of the finite test data points. Next, chart of the Ed between the PV and T was obtained. In addition, sensitivity analyses of injection rate and steam quality are discussed in this paper. Finally, the precise of the regression formula was verified by three steam flooding case of different heavy oil fields. The results indicated that, in order to get higher Ed, higher injection PV and temperature are beneficial. With the Ed chart, technicians can determine different schemes to improve oil displacement efficiency according to specific reservoir conditions. Besides, main production indexes such as oil recovery can be predicted quickly and precisely. \u0000 \u0000 Key words: Fossil energy, heavy oil, displacement efficiency, thermal recovery, steam flooding.","PeriodicalId":332748,"journal":{"name":"Journal of Petroleum and Gas Engineering","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116000642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0