Tutuka Ariadji - Academia.edu (original) (raw)

Papers by Tutuka Ariadji

Day 3 Tue, November 30, 2021

East Natuna is well known for its huge natural gas reserves with a very high CO2 content. The app... more East Natuna is well known for its huge natural gas reserves with a very high CO2 content. The appearance of CO2 content in an oil and gas field is always considered as waste material and will severely affect the economic value of the field. The higher the content, the more costly the process, both technically and environmentally. In this research, the newly proposed reservoir management approach called CSSU (Carbon Sequestration Storage and Utilization) method is trying to change the paradigm of CO2 from waste material into economic materials. The novelty of this research is the combined optimization of deterministic and stochastic methods with the Particle Swarm Optimization (PSO) algorithm to answer complex and non-linear problems in the CSSU (Carbon Sequestration Storage and Utilization) method. The CSSU method is an integration of geological, geophysical, reservoir engineering and engineering economics with the determination of technical and economic optimization of the use of C...

Makalah ini bertujuan untuk mengevaluasi metoda analisa data penurunan laju produksi dimana tekan... more Makalah ini bertujuan untuk mengevaluasi metoda analisa data penurunan laju produksi dimana tekanan alir dasar sumur berubah-ubah besarnya. Pengerjaan yang diuraikan di dalam makalah ini timbul dari kebutuhan untuk menganalisa data penurunan produksi dimana tekanan alir dasar sumur berubah-ubah besarnya. Perubahan tekanan dasar sumur terhadap waktu meniadakan penggunaan model penurunan eksponensial untuk analisa kurva penurunan konvensional. Penggunaan normalisasi tekanan aliran dengan laju aliran biasanya tidak memperbaiki masalah ini. Di dalam makalah ini, akan dihadirkan penggunaan fungsi superposisi yang tepat untuk menghitung perubahan laju produksi dan tekanan selama produksi. Fungsi ini adalah analog kasus laju tetap untuk variabel-laju aliran selama kondisi post-transien dan dapat digunakan untuk mengembangkan analog kasus tekanan tetap untuk analisa kurva penurunan dari data lapangan. Fungsi waktu analog kasus tekanan tetap dihitung dari fungsi laju tetap dengan menggunakan...

A reservoir characterization study has been applied on a Brownfield located in Sumatra, to improv... more A reservoir characterization study has been applied on a Brownfield located in Sumatra, to improve accuracy of a geological model, using a newly developed procedure employing anomalous impedance and integrated geology, geophysics & reservoir, in order to locate potential remaining reserves. Seismic inversion was performed using both checkshot data and synthetic checkshot, and field division by blocks was identified through the help of variance cube maps. The seismic inversion produced anomalous impedance that was generated through cross-plot analysis could separate sand and shale better. Hence, by applying crossplot and statistical analysis between the anomalous impedance & petrophysical data obtained from well log analysis yielded a correlation between seismic and well data that will be used for facies modelling. Several realizations of facies modelling were overlaid with a bubble map of the field cumulative production to find the most realistic one. Eventually, a reservoir simulat...

Summary Indonesia oil production is in the stage of mature fields dominant having a current oil r... more Summary Indonesia oil production is in the stage of mature fields dominant having a current oil recovery factor of 32% leaving underground about 48.6 billion barrels of unrecoverable oil in place ( SKK Migas, 2016 ). At this stage, Enhanced Oil Recovery (EOR) is a mandatory choice to lift up the unrecoverable oil. SKK Migas and Bandung Institute of Technology (ITB) conducted a study in 2015 to evaluate the EOR potential of 136 fields in Indonesia. EOR screening processes was firstly conducted using the combination of Al-Adasani (2011) and Taber (1983 & 1997 ) studies to determine the most suited EOR methods for each reservoir. Following the screening results is forecasting additional reserves for each reservoir applying the US Department of Energy (DOE) formula. Based on the additional reserves, we are seeking the best field candidates for CO2 EOR. The CO2 EOR technology is a proven and mature technology. Through mapping the CO2 sources and the injected fields in Indonesia, several ...

Ide dasar penerapan kombinasi vibroseismik dan injeksi surfaktan adalah agar mendapatkan faktor p... more Ide dasar penerapan kombinasi vibroseismik dan injeksi surfaktan adalah agar mendapatkan faktor perolehan (RF) yang maksimal. Dua metode ini mentargetkan 1 parameter yang sama, yaitu penurunan tegangan permukaan (IFT). Dimana penurunan parameter tersebut secara kimiawi oleh injeksi surfaktan dan penurunan secara fisik oleh stimulasi vibroseismik. Kinerja penerapan kombinasi vibroseismik dan injeksi surfaktan pada skala lapangan (reservoir) belum diketahui secara pasti, sedangkan pada kondisi laboratorium menjanjikan faktor perolehan (RF) yang besar. Oleh karena itu penelitian ini bertujuan untuk mengetahui kinerja reservoir akibat adanya kombinasi injeksi surfaktan dan vibroseismik melalui penyelarasan (history matching) faktor perolehan (RF) hasil percobaan di Laboratorium dengan simulator UTCHEM 9.82. Juga untuk mengevaluasi metoda kombinasi injeksi surfaktan dan vibroseismik pada skala core dan reservoir. Penelitian ini menunjukkan bahwa hasil penyelarasan kurva faktor perolehan ...

Proceedings of the Second International Conference on Science, Engineering and Technology, 2019

Mathematical Models and Methods in Applied Sciences, 2017

This paper contains reservoir simulation study of c arbon storage at Gundih field in Central Java... more This paper contains reservoir simulation study of c arbon storage at Gundih field in Central Java Island, Indonesia. Two different cases of injection simulation were performed and analyzed in this paper. The cases represent the conditions when the smallest and largest volumes of CO 2 are injected into the subsurface to see the changes of reservoir that happen after the injection processes. The simulation result shows that when a larger amount of CO 2 is injected into the targeted reservoir, it will migrate to the peak of anticline structure located in the southeast of CO 2 injection well. The displacement of CO 2 in the simulation progress shows that it will not reach the fault location. The geological model for synthetic seismogram calculation is then built based on the simulation reservoir result. The furthest displacement of CO 2 is calculated on each case and described as the saturated CO 2 layers. Forward modeling is performed to create synthetic seismic gather which will be pr...

Jika minyak di reservoir mempunyai kekentalan yang tinggi akan menyebabkan sukar bergerak, oleh s... more Jika minyak di reservoir mempunyai kekentalan yang tinggi akan menyebabkan sukar bergerak, oleh sebab itu dilakukan injeksi uap berulang (Huff dan Puff) untuk menurunkan kekentalan minyak sehingga minyak akan mudah untuk bergerak. Aspek penting dalam injeksi uap (Huff dan Puff) di dalam menurunkan kekentalan minyak adalah pemanasan minyak oleh injeksi uap yang mengakibatkan adanya proses rambatan (konduksi) dan aliran (konveksi) di batuan dan fluida reservoir sehingga minyak.mudah bergerak. Penelitian ini akan difokuskan pada prediksi kinerja sumur injeksi uap Huff dan Puff dengan metode analitik dan simulasi.

Natural gas extracted from its respective reservoir needs to be processed to meet the specificati... more Natural gas extracted from its respective reservoir needs to be processed to meet the specifications of sales gas. CO2 is one of the components that needs to be separated from natural gas. The CO2 concentration of natural gas varies from a content of less than 20 mole % to more than 80 mole%. There is a problem when the content of CO2 is very high so it is necessary to modify the CO2 level reduction by modifying the equipment or changing the operating conditions to meet the desired CO2 purity. In this study, field conditions and characteristics reviewed is East Natuna Gas Field which has a gas composition of 71% CO2 and 29% methane with modified pressure based on the capability and capacity of available equipment. From the conditions and characteristics of the field, the CO2 method of separation from natural gas using cryogenic distillation was chosen.This research presents analysis and sensitivity of technical parameters that influence the method of CO2 separation from natural gas ...

Production rate optimization of gas well production is one of the important factors in petroleum ... more Production rate optimization of gas well production is one of the important factors in petroleum industries. If the production rate is not optimum, then it is not either economic, or, it generates bad effects to the reservoir performance. Currently, general guideline which is used for an optimum production rate is 30% of the Absolute Open Flow Potential (AOFP). This study shows how is validity of the guideline above for various well and reservoir conditions. As its consequences, a new method is developed which has function as a guideline to improve well performance. The analysis begins from comparing between production rates which are resulted from the optimization calculation and from field production rates. Then, the analysis ends to a performance plot of ratio of pressure loss along the well bore to the total pressure loss since from the reservoir versus ratio of the optimum flow rate obtained from Nodal System Analysis to its AOFP obtained from gas deliverability analysis. A new...

Metode experimental design dipergunakan untuk menentukan tingkat ketidakpastian parameter geologi... more Metode experimental design dipergunakan untuk menentukan tingkat ketidakpastian parameter geologi dan reservoir untuk mengetahui bagaimana efeknya terhadap penentuan perolehan gas dan plateu laju alir gas. Ketidakpastian parameter geologi dan reservoir ini perlu dikaji dikarenakan tidak adanya data core dan SCAL, kurang lengkapnya data PVT serta baru dua sumur yang dikembangkan pada lapangan gas-X ini. Dengan demikian kajian ini penting dilakukan untuk mengetahui tingkat ketidakpastian parameter geologi dan reservoir pada lapangan gas-X ini. Studi ini menerapkan desain two level fractional factorial dan memakai metode Plackett-Burman untuk menentukan tingkat ketidakpastian parameter tersebut. Dari studi ini diperoleh hasil bahwa tingkat ketidakpastian parameter yang berpengaruh terhadap recovery factor (RF) dari yang terbesar sampai yang terkecil adalah K multiplier, Sgr, Kv/Kh, Krg, Krw, skin factor, aquifer size, porosity, permeability, gas density dan IGIP. Sementara itu tingkat ...

In these research, the vibration stimulation was applied to 6 core samples of coal which have a r... more In these research, the vibration stimulation was applied to 6 core samples of coal which have a range of permeability from 0.240 mD to 58.85 mD, used overburden pressure of 300 psi and the injection rate of 100 psi of nitrogen gas. The results of this research show that the stimulation could increase the coal permeabilities from 7.35% up to about 160% and the most reliable result is 40% (sample L) increment. Furthermore, there is a relationship between amplitude and permeability improvement that indicates an optimum amplitude to maximize the vibration effect, and, this optimum amplitude depends on the original permeability of the core samples. Further in depth investigation using reservoir simulation that correspond to the laboratory study yield an indication that this new vibration method can reduce the dewatering process by about 45.45% (sample A3) from the normal dewatering time and could increase the CBM production up to 1.58 times (sample L).

Journal of Petroleum Science and Engineering

2ND INTERNATIONAL CONFERENCE ON EARTH SCIENCE, MINERAL, AND ENERGY

Indonesian Journal of Energy

This study is intended to evaluate, analyze and give recommendations for prudently utilizing gas ... more This study is intended to evaluate, analyze and give recommendations for prudently utilizing gas production to maximize regional economic developments. A method to relate sectors and inter-regions, i.e., Inter-regional Input-Output (IRIO) Model, is employed to predict the impact of the upstream potential on the down stream. This techno-economic study examines the allocated gas from three gas field blocks altogether at Maluku and West Papua Provinces, i.e., Tangguh, Masela, and Kasuri, to supply the demands of (1) power plants; (2) fertilizer industries, and (3) petrochemicals industries. This study identifies development processes, investment parameters from pre-construction to operation, implementation parameters, and output parameters, both for the upstream and downstream sectors during 2016-2035. The IRIO model uses the 2010 IRIO Table published by BAPPENAS which consists of 35 sectors and 35 provinces. The shock data used to estimate the economic impacts include those data on in...

SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition, 2016

During periods of low oil prices, profitability of field developments drops drastically. To help ... more During periods of low oil prices, profitability of field developments drops drastically. To help with this difficulty, we offer a cost-effective method of boosting hydrocarbon recovery by optimizing well locations. A new software program has been developed to optimize vertical well placements based on the Simulated Opportunity Index (SOI). SOI is an intelligent method to identify zones with high potential for production. The production potential of an oil & gas field area is empirically calculated from basic rock and fluid properties, and from reservoir pressure as its energy capacity. In order to obtain the best results, the original SOI formula (Molina et al., 2009) was extended to both oil and gas fields. With the new SOI software, it is possible to rank the best layers in each areal location, resulting in appropriate vertical well locations and perforated intervals in multilayer reservoirs. Furthermore, the developed software can account for the effects of existing wells and sea...

Declining production in oil recovery operations is a major concern in the oil industry. Each of c... more Declining production in oil recovery operations is a major concern in the oil industry. Each of commonly applied EOR methods has a number of limitations as well as some undesirable results. Vibration stimulation technologies are an alternative method in improving production and increasing recovery in which the vibration is thought to facilitate production by, in one view of diminishing capillary forces; reducing adhesion between rocks and fluids; or causing oil droplets to cluster into "streams" that flow with the waterflood, and the other view of enlarging pore volume. Various laboratory investigations have been conducted to find out the effect of high and low vibration frequency on the reservoir rock properties. A study of low-frequency waves is of special interest because of the potential for reservoir stimulation by surface-based vibrators. Reservoir resonant frequencies should be selected to get the maximum improvement in reservoir rock properties. The results of the laboratory research show that effect of vibration causes an increase of effective porosity up to 9.17%. Optimum frequency is 15 Hz in all of the experiments. Furthermore, this investigation also tries to seek a semi-analytical equation for optimum frequency based on the laboratory result. The general resultant equation has the format:

Day 3 Tue, November 30, 2021

East Natuna is well known for its huge natural gas reserves with a very high CO2 content. The app... more East Natuna is well known for its huge natural gas reserves with a very high CO2 content. The appearance of CO2 content in an oil and gas field is always considered as waste material and will severely affect the economic value of the field. The higher the content, the more costly the process, both technically and environmentally. In this research, the newly proposed reservoir management approach called CSSU (Carbon Sequestration Storage and Utilization) method is trying to change the paradigm of CO2 from waste material into economic materials. The novelty of this research is the combined optimization of deterministic and stochastic methods with the Particle Swarm Optimization (PSO) algorithm to answer complex and non-linear problems in the CSSU (Carbon Sequestration Storage and Utilization) method. The CSSU method is an integration of geological, geophysical, reservoir engineering and engineering economics with the determination of technical and economic optimization of the use of C...

Makalah ini bertujuan untuk mengevaluasi metoda analisa data penurunan laju produksi dimana tekan... more Makalah ini bertujuan untuk mengevaluasi metoda analisa data penurunan laju produksi dimana tekanan alir dasar sumur berubah-ubah besarnya. Pengerjaan yang diuraikan di dalam makalah ini timbul dari kebutuhan untuk menganalisa data penurunan produksi dimana tekanan alir dasar sumur berubah-ubah besarnya. Perubahan tekanan dasar sumur terhadap waktu meniadakan penggunaan model penurunan eksponensial untuk analisa kurva penurunan konvensional. Penggunaan normalisasi tekanan aliran dengan laju aliran biasanya tidak memperbaiki masalah ini. Di dalam makalah ini, akan dihadirkan penggunaan fungsi superposisi yang tepat untuk menghitung perubahan laju produksi dan tekanan selama produksi. Fungsi ini adalah analog kasus laju tetap untuk variabel-laju aliran selama kondisi post-transien dan dapat digunakan untuk mengembangkan analog kasus tekanan tetap untuk analisa kurva penurunan dari data lapangan. Fungsi waktu analog kasus tekanan tetap dihitung dari fungsi laju tetap dengan menggunakan...

A reservoir characterization study has been applied on a Brownfield located in Sumatra, to improv... more A reservoir characterization study has been applied on a Brownfield located in Sumatra, to improve accuracy of a geological model, using a newly developed procedure employing anomalous impedance and integrated geology, geophysics & reservoir, in order to locate potential remaining reserves. Seismic inversion was performed using both checkshot data and synthetic checkshot, and field division by blocks was identified through the help of variance cube maps. The seismic inversion produced anomalous impedance that was generated through cross-plot analysis could separate sand and shale better. Hence, by applying crossplot and statistical analysis between the anomalous impedance & petrophysical data obtained from well log analysis yielded a correlation between seismic and well data that will be used for facies modelling. Several realizations of facies modelling were overlaid with a bubble map of the field cumulative production to find the most realistic one. Eventually, a reservoir simulat...

Summary Indonesia oil production is in the stage of mature fields dominant having a current oil r... more Summary Indonesia oil production is in the stage of mature fields dominant having a current oil recovery factor of 32% leaving underground about 48.6 billion barrels of unrecoverable oil in place ( SKK Migas, 2016 ). At this stage, Enhanced Oil Recovery (EOR) is a mandatory choice to lift up the unrecoverable oil. SKK Migas and Bandung Institute of Technology (ITB) conducted a study in 2015 to evaluate the EOR potential of 136 fields in Indonesia. EOR screening processes was firstly conducted using the combination of Al-Adasani (2011) and Taber (1983 & 1997 ) studies to determine the most suited EOR methods for each reservoir. Following the screening results is forecasting additional reserves for each reservoir applying the US Department of Energy (DOE) formula. Based on the additional reserves, we are seeking the best field candidates for CO2 EOR. The CO2 EOR technology is a proven and mature technology. Through mapping the CO2 sources and the injected fields in Indonesia, several ...

Ide dasar penerapan kombinasi vibroseismik dan injeksi surfaktan adalah agar mendapatkan faktor p... more Ide dasar penerapan kombinasi vibroseismik dan injeksi surfaktan adalah agar mendapatkan faktor perolehan (RF) yang maksimal. Dua metode ini mentargetkan 1 parameter yang sama, yaitu penurunan tegangan permukaan (IFT). Dimana penurunan parameter tersebut secara kimiawi oleh injeksi surfaktan dan penurunan secara fisik oleh stimulasi vibroseismik. Kinerja penerapan kombinasi vibroseismik dan injeksi surfaktan pada skala lapangan (reservoir) belum diketahui secara pasti, sedangkan pada kondisi laboratorium menjanjikan faktor perolehan (RF) yang besar. Oleh karena itu penelitian ini bertujuan untuk mengetahui kinerja reservoir akibat adanya kombinasi injeksi surfaktan dan vibroseismik melalui penyelarasan (history matching) faktor perolehan (RF) hasil percobaan di Laboratorium dengan simulator UTCHEM 9.82. Juga untuk mengevaluasi metoda kombinasi injeksi surfaktan dan vibroseismik pada skala core dan reservoir. Penelitian ini menunjukkan bahwa hasil penyelarasan kurva faktor perolehan ...

Proceedings of the Second International Conference on Science, Engineering and Technology, 2019

Mathematical Models and Methods in Applied Sciences, 2017

This paper contains reservoir simulation study of c arbon storage at Gundih field in Central Java... more This paper contains reservoir simulation study of c arbon storage at Gundih field in Central Java Island, Indonesia. Two different cases of injection simulation were performed and analyzed in this paper. The cases represent the conditions when the smallest and largest volumes of CO 2 are injected into the subsurface to see the changes of reservoir that happen after the injection processes. The simulation result shows that when a larger amount of CO 2 is injected into the targeted reservoir, it will migrate to the peak of anticline structure located in the southeast of CO 2 injection well. The displacement of CO 2 in the simulation progress shows that it will not reach the fault location. The geological model for synthetic seismogram calculation is then built based on the simulation reservoir result. The furthest displacement of CO 2 is calculated on each case and described as the saturated CO 2 layers. Forward modeling is performed to create synthetic seismic gather which will be pr...

Jika minyak di reservoir mempunyai kekentalan yang tinggi akan menyebabkan sukar bergerak, oleh s... more Jika minyak di reservoir mempunyai kekentalan yang tinggi akan menyebabkan sukar bergerak, oleh sebab itu dilakukan injeksi uap berulang (Huff dan Puff) untuk menurunkan kekentalan minyak sehingga minyak akan mudah untuk bergerak. Aspek penting dalam injeksi uap (Huff dan Puff) di dalam menurunkan kekentalan minyak adalah pemanasan minyak oleh injeksi uap yang mengakibatkan adanya proses rambatan (konduksi) dan aliran (konveksi) di batuan dan fluida reservoir sehingga minyak.mudah bergerak. Penelitian ini akan difokuskan pada prediksi kinerja sumur injeksi uap Huff dan Puff dengan metode analitik dan simulasi.

Natural gas extracted from its respective reservoir needs to be processed to meet the specificati... more Natural gas extracted from its respective reservoir needs to be processed to meet the specifications of sales gas. CO2 is one of the components that needs to be separated from natural gas. The CO2 concentration of natural gas varies from a content of less than 20 mole % to more than 80 mole%. There is a problem when the content of CO2 is very high so it is necessary to modify the CO2 level reduction by modifying the equipment or changing the operating conditions to meet the desired CO2 purity. In this study, field conditions and characteristics reviewed is East Natuna Gas Field which has a gas composition of 71% CO2 and 29% methane with modified pressure based on the capability and capacity of available equipment. From the conditions and characteristics of the field, the CO2 method of separation from natural gas using cryogenic distillation was chosen.This research presents analysis and sensitivity of technical parameters that influence the method of CO2 separation from natural gas ...

Production rate optimization of gas well production is one of the important factors in petroleum ... more Production rate optimization of gas well production is one of the important factors in petroleum industries. If the production rate is not optimum, then it is not either economic, or, it generates bad effects to the reservoir performance. Currently, general guideline which is used for an optimum production rate is 30% of the Absolute Open Flow Potential (AOFP). This study shows how is validity of the guideline above for various well and reservoir conditions. As its consequences, a new method is developed which has function as a guideline to improve well performance. The analysis begins from comparing between production rates which are resulted from the optimization calculation and from field production rates. Then, the analysis ends to a performance plot of ratio of pressure loss along the well bore to the total pressure loss since from the reservoir versus ratio of the optimum flow rate obtained from Nodal System Analysis to its AOFP obtained from gas deliverability analysis. A new...

Metode experimental design dipergunakan untuk menentukan tingkat ketidakpastian parameter geologi... more Metode experimental design dipergunakan untuk menentukan tingkat ketidakpastian parameter geologi dan reservoir untuk mengetahui bagaimana efeknya terhadap penentuan perolehan gas dan plateu laju alir gas. Ketidakpastian parameter geologi dan reservoir ini perlu dikaji dikarenakan tidak adanya data core dan SCAL, kurang lengkapnya data PVT serta baru dua sumur yang dikembangkan pada lapangan gas-X ini. Dengan demikian kajian ini penting dilakukan untuk mengetahui tingkat ketidakpastian parameter geologi dan reservoir pada lapangan gas-X ini. Studi ini menerapkan desain two level fractional factorial dan memakai metode Plackett-Burman untuk menentukan tingkat ketidakpastian parameter tersebut. Dari studi ini diperoleh hasil bahwa tingkat ketidakpastian parameter yang berpengaruh terhadap recovery factor (RF) dari yang terbesar sampai yang terkecil adalah K multiplier, Sgr, Kv/Kh, Krg, Krw, skin factor, aquifer size, porosity, permeability, gas density dan IGIP. Sementara itu tingkat ...

In these research, the vibration stimulation was applied to 6 core samples of coal which have a r... more In these research, the vibration stimulation was applied to 6 core samples of coal which have a range of permeability from 0.240 mD to 58.85 mD, used overburden pressure of 300 psi and the injection rate of 100 psi of nitrogen gas. The results of this research show that the stimulation could increase the coal permeabilities from 7.35% up to about 160% and the most reliable result is 40% (sample L) increment. Furthermore, there is a relationship between amplitude and permeability improvement that indicates an optimum amplitude to maximize the vibration effect, and, this optimum amplitude depends on the original permeability of the core samples. Further in depth investigation using reservoir simulation that correspond to the laboratory study yield an indication that this new vibration method can reduce the dewatering process by about 45.45% (sample A3) from the normal dewatering time and could increase the CBM production up to 1.58 times (sample L).

Journal of Petroleum Science and Engineering

2ND INTERNATIONAL CONFERENCE ON EARTH SCIENCE, MINERAL, AND ENERGY

Indonesian Journal of Energy

This study is intended to evaluate, analyze and give recommendations for prudently utilizing gas ... more This study is intended to evaluate, analyze and give recommendations for prudently utilizing gas production to maximize regional economic developments. A method to relate sectors and inter-regions, i.e., Inter-regional Input-Output (IRIO) Model, is employed to predict the impact of the upstream potential on the down stream. This techno-economic study examines the allocated gas from three gas field blocks altogether at Maluku and West Papua Provinces, i.e., Tangguh, Masela, and Kasuri, to supply the demands of (1) power plants; (2) fertilizer industries, and (3) petrochemicals industries. This study identifies development processes, investment parameters from pre-construction to operation, implementation parameters, and output parameters, both for the upstream and downstream sectors during 2016-2035. The IRIO model uses the 2010 IRIO Table published by BAPPENAS which consists of 35 sectors and 35 provinces. The shock data used to estimate the economic impacts include those data on in...

SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition, 2016

During periods of low oil prices, profitability of field developments drops drastically. To help ... more During periods of low oil prices, profitability of field developments drops drastically. To help with this difficulty, we offer a cost-effective method of boosting hydrocarbon recovery by optimizing well locations. A new software program has been developed to optimize vertical well placements based on the Simulated Opportunity Index (SOI). SOI is an intelligent method to identify zones with high potential for production. The production potential of an oil & gas field area is empirically calculated from basic rock and fluid properties, and from reservoir pressure as its energy capacity. In order to obtain the best results, the original SOI formula (Molina et al., 2009) was extended to both oil and gas fields. With the new SOI software, it is possible to rank the best layers in each areal location, resulting in appropriate vertical well locations and perforated intervals in multilayer reservoirs. Furthermore, the developed software can account for the effects of existing wells and sea...

Declining production in oil recovery operations is a major concern in the oil industry. Each of c... more Declining production in oil recovery operations is a major concern in the oil industry. Each of commonly applied EOR methods has a number of limitations as well as some undesirable results. Vibration stimulation technologies are an alternative method in improving production and increasing recovery in which the vibration is thought to facilitate production by, in one view of diminishing capillary forces; reducing adhesion between rocks and fluids; or causing oil droplets to cluster into "streams" that flow with the waterflood, and the other view of enlarging pore volume. Various laboratory investigations have been conducted to find out the effect of high and low vibration frequency on the reservoir rock properties. A study of low-frequency waves is of special interest because of the potential for reservoir stimulation by surface-based vibrators. Reservoir resonant frequencies should be selected to get the maximum improvement in reservoir rock properties. The results of the laboratory research show that effect of vibration causes an increase of effective porosity up to 9.17%. Optimum frequency is 15 Hz in all of the experiments. Furthermore, this investigation also tries to seek a semi-analytical equation for optimum frequency based on the laboratory result. The general resultant equation has the format: