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Development of Hybridized Completions for Extended Reach Horizontal Wells
Bisweswar Ghosh,
Omar Jamal Chammout,
Mohamad Yousef Alklih,
Samuel Osisanya
Issue:
Volume 4, Issue 1, June 2020
Pages:
1-15
Received:
26 December 2019
Accepted:
9 January 2020
Published:
10 February 2020
Abstract: Non-uniform production and injection profiles in extended reach horizontal wells invite several production and recovery issues. Downhole flow control devices, along with dynamic reservoir modeling, have been beneficial in regulating flow, improving productivity from the toe section, delaying water breakthrough, reducing water coning, and improving overall reservoir sweep. However, such measures add to substantial completion costs and may not be economical for marginal reservoirs. Using simple slotted liners is a cheaper option but may not be effective in regulating injection/production profiles in the longer term. This research focused on applying “coupled static and dynamic modeling” to examine and compare five different types of completion designs, using data from a heterogeneous carbonate reservoir. Results show that inflow control device (ICD) integrated completions can achieve better recovery than the slotted, pre-perforated, or engineered liners. Engineered-slotted liners perform better than the pre-perforated-slotted liners. The pre-perforated-slotted liners do not show much improvement over open-hole completions. Finally, a hybrid completion design is optimized by combining ICD with engineered-slotted liners, which showed higher well productivity, lower water cut production, and reduced completion cost.
Abstract: Non-uniform production and injection profiles in extended reach horizontal wells invite several production and recovery issues. Downhole flow control devices, along with dynamic reservoir modeling, have been beneficial in regulating flow, improving productivity from the toe section, delaying water breakthrough, reducing water coning, and improving ...
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Hydrolysis of Cellulose Wastes: Feasibility of Fuel Ethanol as Alternative to Gasoline from Petroleum as a Usable Energy Source in Nigeria
Godwin Nwafor Ohia,
Nnaemeka Princewill Ohia,
Stanley Toochukwu Ekwueme,
Ifeanyi Valerian Nwankwo
Issue:
Volume 4, Issue 1, June 2020
Pages:
16-22
Received:
17 October 2019
Accepted:
9 November 2019
Published:
12 February 2020
Abstract: It is generally believed that fossil fuel aside its environmental implications in terms of its high carbon emissions and pollution characteristics is rapidly depleting. New energy source that is not only abundant in supply but more fungible in today’s value chain and with potential as future green fuel is required to fill the gap. Research has shown that biomass possesses such characteristics to serve as alternative to the fossil fuel energy. Of all the fuels gotten from biomass, Ethanol is the most common and widely used. Ethanol was originally produced to serve as wine and for medicine, but today the use of ethanol are many ranging from production of organic chemicals to source of organic energy for heating, lighting and locomotion. Ethanol apart from synthesis is prepared from agricultural biomass by conventional method. Conventional methods as applied in many farms are expensive and has greatly increased the cost of food because of competition between consumers and industrialist for raw food materials. A modification of this method, use of cellulose waste and development of an efficient technology are necessary for cheap production, if ethanol is to be used, in place of gasoline. The paper discusses the various methods, techniques, technology, and reaction conditions necessary to produce low price ethanol, and at the same time surveys the possibility of the use of ethanol as alternative to gasoline as a usable energy source.
Abstract: It is generally believed that fossil fuel aside its environmental implications in terms of its high carbon emissions and pollution characteristics is rapidly depleting. New energy source that is not only abundant in supply but more fungible in today’s value chain and with potential as future green fuel is required to fill the gap. Research has show...
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Updates on the Geology and Potential Petroleum System of the Bida Basin in Central Nigeria
Nuhu George Obaje,
Abdullahi Bomai,
Sunday Dabai Moses,
Mohammed Ali,
Abdulwahid Aweda,
Serah Japhet Habu,
Abdullahi Idris-Nda,
Aliyu Isah Goro,
Salome Waziri
Issue:
Volume 4, Issue 1, June 2020
Pages:
23-33
Received:
12 February 2020
Accepted:
24 February 2020
Published:
10 March 2020
Abstract: The Bida Basin is one of Nigeria’s inland frontier basins. The conventional stratigraphy of the Bida Basin has the Bida Formation at the base in the northern sector, followed successively upward by the Sakpe, Enagi, and Batati Formations. In the southern sector, the Lokoja Formation is at the base, followed by the Patti Formation and ending with the Agbaja Formation at the top. Detailed field mapping carried out in this study has not identified the Batati Formation at the previously assigned Type Locality at Batati village. A new formational name of “Pattishabakolo Formation” has been proposed. The Patti Formation is also not mappable at the previously assigned Type Locality of the Mount Patti in Lokoja but mappable at Gegu, Ahoko and midway on the Agbaja Plateau. A new Type Locality at Ahoko has been proposed. Sediment thicknesses in the Bida Basin are shallower at the margin and generally deepen towards the centresuch that the central portions constitute the most prospective areas. Geophysical aeromagnetic interpretation has assisted in the interpretation of the geology of the basin. Organic geochemical studies show that the Kudu Shale in the Northern Bida Basin equivalent to the Ahoko Shale in the Southern Bida Basin constitutes the source rocks in the potential petroleum system. With averages for source rock thickness of 40m, area of basin of 45,000km2, TOC of 9.0wt%, and HI of 220mgHC/gTOC, charge modeling indicates 623 million barrels of oil equivalent extractable hydrocarbons in the Bida Basin, at current knowledge and if the appropriate maturity has been attained at deeper sections. The Bida/Lokoja Formation sandstones as well as the well sorted sandstones in the Enagi Formation constitute potential reservoirs in the basin. Regional seals are provided by the clayey members of the Enagi and Batati Formations. Potential traps are both structural and stratigraphical.
Abstract: The Bida Basin is one of Nigeria’s inland frontier basins. The conventional stratigraphy of the Bida Basin has the Bida Formation at the base in the northern sector, followed successively upward by the Sakpe, Enagi, and Batati Formations. In the southern sector, the Lokoja Formation is at the base, followed by the Patti Formation and ending with th...
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A Short Note on the Petroleum Potential of the Sokoto Basin in North-western Nigeria
Nuhu George Obaje,
Umar Zaki Faruq,
Abdullahi Bomai,
Sunday Dabai Moses,
Mohammed Ali,
Suleiman Adamu,
Alfred Essien,
Umar Lamorde,
Umar Mohammed Umar,
Toochukwu Ozoji,
Perpertua Okonkwo,
Lukman Adamu,
Abdullahi Idris-Nda
Issue:
Volume 4, Issue 1, June 2020
Pages:
34-38
Received:
12 February 2020
Accepted:
27 February 2020
Published:
18 March 2020
Abstract: The stratigraphy of the Sokoto Basin has the Illo/Gundumi Formation at the bottom, followed successively upward by the Taloka, Dukamaje, Wurno, Dange, Kalambaina, Gamba and GwanduFormations. Re-mapping of the basin carried out in this studyshows that the geological framework remainslargely as previously outlined except that some hitherto unreported tectonically controlled structures have been documented. The basin is generally shallower at the margin and deepens towards the centre such that the areas around the border with Niger Republic are deepest and hence most prospective on the Nigerian side. Geophysical aeromagnetic interpretation has assistedto analyze the depth to basement configurations. Organic geochemical studies show that the dark shales and limestones of the Dukamaje Formation constitute the source rocks in the potential petroleum system. With averages for source rock thickness of 50m, area of basin of 60,000km2, TOC of 7.5wt%, and HI of 212mgHC/gTOC, charge modeling indicates 808.10 million barrels of oil equivalent extractable hydrocarbons in the Sokoto Basin, at current knowledge of the geology and if the appropriate maturity has been attained at deeper sections. The sandstones of the Illo/Gundumi Formation as well as in the Taloka and Wurno Formations and carbonates of the Kalambaina Formation provide potential reservoir packages. The paper shale of the Gamba Formation and the clays of the Gwandu Formation provide regional seals. If the presently mapped tectonic structures are ubiquitous in the whole basin, structural and stratigraphic traps may upgrade the petroleum system. Other petroleum systems may exist in the basin with either or both the Illo/Gundumi and Taloka Formation (s) providing the source and reservoir rocks.
Abstract: The stratigraphy of the Sokoto Basin has the Illo/Gundumi Formation at the bottom, followed successively upward by the Taloka, Dukamaje, Wurno, Dange, Kalambaina, Gamba and GwanduFormations. Re-mapping of the basin carried out in this studyshows that the geological framework remainslargely as previously outlined except that some hitherto unreported...
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