Evaluating the Influence of Thermal Dispersion on the Reservoir Temperature During Heating of a Production Well

2021 ◽  
Vol 42 (9) ◽  
pp. 2192-2197
Author(s):  
P. E. Morozov
2020 ◽  
Vol 6 ◽  
pp. 582-593
Author(s):  
B.T.H. Marbun ◽  
R.H. Ridwan ◽  
H.S. Nugraha ◽  
S.Z. Sinaga ◽  
B.A. Purbantanu

2001 ◽  
Vol 3 (3-4) ◽  
pp. 349-367 ◽  
Author(s):  
Noël Vandenberghe ◽  
Michiel Dusar ◽  
Paul Boonen ◽  
LIE Sun Fan ◽  
Rudy Voets ◽  
...  

The Merksplas-Beerse well (North Belgium) is a low-enthalpy geothermal production well targeting the Dinantian karstic limestones to a total depth of 1761 m. The presence of methane gas in these limestones generated a particular interest in this well. This paper describes the geological profile of this well and the Dinantian reservoir. The Namurian-Visean boundary at 1630 m is determined by the base of the dipmeter draping pattern in the radioactive Chokier shales (base of the Namurian) on top of the karstified Dinantian limestone. The stratigraphic composition of the transitional interval from Dinantian to Silesian correlates closely to the nearby Turnhout well. The two fractured intervals at 1630-1656 and 1739-1747 m respectively were identified in the Dinantian limestones. They are associated with siliciclastic sections in between pure limestones. The reservoir water is a sodium chloride brine of about 74 °C and at a pressure below the hydrostatic. The water is slightly radioactive because of the contact with the Chokier hot shales. A carbon dioxide gas with methane and nitrogen admixture is dissolved in the water. The gas liquid ratio at standard conditions is about one and the bubble point is around 200-400 psi at reservoir temperature. A long duration pumping test shows a high fracture permeability and a productivity index of 5.4 m3/h/bar with a productivity to injectivity ratio of 1.45.


Author(s):  
Arizona Yoris Wirawan

<p><span>Dieng merupakan salah satu lapangan panas bumi yang sistem reservoirnya didominasi air. Lapangan dengan reservoir dominasi air memerlukan separator untuk memisahkan fasa uap dan fasa cair, karena fluida didominasi air, fasa cair yang dihasilkan tentu lebih banyak daripada fasa gas sehingga perlu dilakukan injeksi untuk menghindari polusi.Kesetimbangan energi merupakan persamaan dengan prinsip dasar bahwa energi yang masuk kedalam suatu sistem sama besarnya dengan energi yang keluar dari sistem tersebut tanpa ada akumulasi. Prinsip ini digunakan untuk menganalisis bagaimana kondisi reservoir panas bumi Dieng di masa lalu sehingga dapat dijadikan pembelajaran untuk kasus serupa di masa sekarang dan masa yang akan datang. Massa yang keluar sistem antara lain dapat berupa manifestasi permukaan seperti fumarole dan <em>hot springs</em>. Proses ekstraksi fluida juga mengurangi massa yang ada dalam sistem. Sedangkan massa yang masuk kedalam sistem dapat berupa injeksi alami dan injeksi. Metodologi penelitian <span> </span>ini, menggunakan prinsip kesetimbangan energi yang disimulasikan dengan bantuan simulator Tough-2. Hasil penelitian dapat menentukan keefektifan injeksi terhadap tekanan reservoir. Kesimpulan pada penelitian ini, bahwa injeksi perlu dilakukan sedini mungkin pada reservoir dominasi air untuk menghindari tekanandrop yang besar di awal produksi. Namun perlu diperhatikan juga posisi sumur injeksi yang akan difungsikan sebagai sistem recharge, karena akan berpengaruh pada temperatur reservoir, khususnya temperatur pada sumur produksi yang terdekat dengan sumur injeksi.</span></p><p><em>Dieng is one of the geothermal fields where the reservoir system is dominated by water. A field with a water domination reservoir requires a separator to separate the vapor phase and liquid phase, because the fluid is dominated by water, the liquid phase produced is certainly more than the gas phase so injection needs to be done to avoid pollution. Energy balance is an equation with the basic principle that the energy that enters a system is as large as the energy coming out of the system without any accumulation. This principle is used to analyze how the condition of the Dieng geothermal reservoir in the past so that it can be used as learning for similar cases in the present and in the future. The mass that exits the system can be in the form of surface manifestations such as fumaroles and hot springs. The fluid extraction process also reduces the mass in the system. While the mass that enters the system can be either natural injection or injection. The research methodology uses the principle of energy balance simulated with the help of the Tough-2 simulator. Research results can determine the effectiveness of injection of reservoir tekanan. The conclusion of this study, that injection needs to be done as early as possible in the reservoir of water dominance to avoid a large tekanan at the beginning of production. However, it should be noted also that the position of the injection well will function as a recharge system, because it will affect the reservoir temperature, especially the temperature at the production well closest to the injection well.</em></p>


Author(s):  
A. A. Kazakov ◽  
V. V. Chelepov ◽  
R. G. Ramazanov

The features of evaluation of the effectiveness of flow deflection technologies of enhanced oil recovery methods. It is shown that the effect of zeroing component intensification of fluid withdrawal leads to an overestimation of the effect of flow deflection technology (PRP). Used in oil companies practice PRP efficiency calculation, which consists in calculating the effect on each production well responsive to subsequent summation effects, leads to the selective taking into account only the positive components of PRP effect. Negative constituents — not taken into account and it brings overestimate over to overstating of efficiency. On actual examples the groundless overstating and understating of efficiency is shown overestimate at calculations on applied in petroleum companies by a calculation.


2011 ◽  
Vol 2 (1) ◽  
pp. 13-17
Author(s):  
I. David ◽  
M. Visescu

Abstract Geothermal energy source is the heat from the Earth, which ranges from the shallow ground (the upper 100 m of the Earth) to the hot water and hot rock which is a few thousand meters beneath the Earth's surface. In both cases the so-called open systems for geothermal energy resource exploitation consist of a groundwater production well to supply heat energy and an injection well to return the cooled water, from the heat pump after the thermal energy transfer, in the underground. In the paper an analytical method for a rapid estimation of the ground water flow direction effect on the coupled production well and injection well system will be proposed. The method will be illustrated with solutions and images for representative flow directions respect to the axis of the production/injection well system.


Author(s):  
Gustavo Charles Peixoto de Oliveira ◽  
Lucas Cavalcanti Silva ◽  
Marcos Ramon Bezerra dos Santos ◽  
Waldir Leite Roque
Keyword(s):  

2014 ◽  
Vol 13 (3) ◽  
Author(s):  
Agustinus Denny Unggul Raharjo

<p class="BodyA">South Manokwari Regency is a new autonomous region in West Papua Province with abundant natural resources. As a new autonomous region South Manokwari Regency will be experiencing significant population growth. Population growth along with development and modernization will give burden to electricity demand. Alternatively, electricity can be provided with geothermal resources in Momiwaren District. Based on survey conducted by the government through the Geology Resources Centre in 2009, the reservoir temperature of the geothermal sources is 84<sup>o</sup>C with non volcanic geothermal system. Thus, the geothermal resources in South Manokwari Regency could be developed into binary cycle electric generator.</p>


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