AGH Drilling, Oil, Gas
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ISSN 2299-4157
e-ISSN: 2300-7052
Issue Date
2017
Volume
Vol. 34
Number
No. 4
Description
Journal Volume
AGH Drilling, Oil, Gas
Vol. 34 (2017)
Projects
Pages
Articles
The impact of graphite on the thermal conductivity of solidified grout
(Wydawnictwa AGH, 2017) Śliwa, Tomasz; Kowalski, Tomasz Wojciech; Stryczek, Stanisław; Wiśniowski, Daniel; Bieda, Anna; Piwowarczyk, Sara; Beszłej, Jan; Naklicki, Mateusz; Sapińska-Śliwa, Aneta
The fast development of low-temperature geothermal energy affects the search for newer and newer solutions and materials used in the construction of borehole heat exchangers. One of the most important factors affecting the correct operation of heat pump systems with borehole heat exchangers is appropriately selected solidified grout. Solidifies grout has to be characterized by the highest thermal conductivity and good sealing borehole heat exchangers. The paper will present the impact of graphite on the thermal conductivity of solidified grout.
An analysis of the work conditions in the Bóbrka-Rogi field over the 100 year history of its exploitation
(Wydawnictwa AGH, 2017) Wojnar, Albin; Rybicki, Czesław
The Bóbrka - Rogi oil reservoir belongs to oldest reservoirs in Poland. The handmade well named Franek was created by Ignacy Lukasiewicz in 1853. It is currently the object about the historic museum. The accumulation appears in the anticline structure of the Bóbrka fold. As result of study of geological data, this fold has four secondary structures forming separate longitudinal blocks. Moreover transverse dislocations cross the Bóbrka structure on the row of separate deposits. Oil appears in four levels of Ciężkowice sandstones and in layers of the "czarnorzecki" sandstone. The level of the first Ciężkowice sandstone contains oil on the east from the Wietrznianka fault, II level of the Ciężkowice sandstone is oil-bearing within the Wietrznianka fault on the west, up to the Rogi fault on the east., III level of the Ciężkowice sandstone is oil-bearing from the Rogi fault on the east to the Bóbrka fault and partly outside it on the west, IV level of the Ciężkowice sandstone contains oil-bearing horizontals to the west from this block to the fault of the TPS mine. The sandstone Czarnorzecki contains oil-bearing horizontal to the west from the fault of the Jasiołka river. The reservoir belongs to the stratified type in the anticline structure it is shielded lithologically and partly tectonically by dislocations or overthrusts. As it gets out of data of geologically of deposit since the discovery of the deposit one got out of him above 1 200 thousand t of oil and 190 million nm3 gas. The surface of the mining district carries out approx. 2.5 km$^{2}$ . Authors on the basis archival data made the analysis the previous exploitation this reservoir and the evaluation of perspectives of his continued existence with the regard of the possible revitalization of the wells.
Analysis and selection of CO₂ sources for CCS-EOR projects in oil fields clusters in Poland
(Wydawnictwa AGH, 2017) Mikołajczak, Edyta; Kosowski, Piotr; Stopa, Jerzy; Wartak, Joanna
Article contains detailed analysis and preliminary selection of potential $CO_{2}$ emitters, who could be suppliers of gas for CCS-EOR projects in oil fields clusters in Poland. The idea of $CO_{2}$ injection into clusters arises from the fact that oil reservoirs in Poland are relatively small, but very often located close together. Grouping reservoirs allows the potential storage capacity to increase significantly and improves economic indicators. In addition, CCS-EOR projects combine $CO_{2}$ storage (CCS) with an increase in production from mature oil fields (EOR). The analysis was performed using a database of carbon dioxide emitters in Poland, which was created by the National Centre for Emissions Management. This database contains a list of all registered producers of $CO_{2}$ with annual emissions exceeding 1 Mg. On this basis, potential sources of $CO_{2}$ for previously selected four clusters of oil reservoirs were chosen.
Analysis of energy transfer between pipes of U-type borehole heat exchanger
(Wydawnictwa AGH, 2017) Złotkowski, Albert; Druzgała, Angelika; Zeljaś, Dagmara
Use of low-temperature energy accumulated in the ground for heating buildings requires the borehole heat exchangers. The amount of heat exchanged (by the heat exchanger with the urethane) depends on the construction material parameters used to make the exchanger. One of the problems with the efficiency of the heat exchanger is the amount of heat transferred between the borehole pipes. This phenomenon can be described using numerical simulations or by studying a laboratory model. This article shows the results of laboratory measurements of the heat flux permeating between the pipes of the heat exchanger.
Determining the actual temperature of the side of a borehole heat exchanger
(Wydawnictwa AGH, 2017) Złotkowski, Albert; Druzgała, Angelika
Borehole heat exchangers (BHE) are made as hydraulic systems consolidated by cement slurry in boreholes. They mediate in heat exchange between the receiver on the surface (heat pump), and the reservoir of thermal energy (rock mass). In the analytical description of temperature changes accompanying energy download and return to the rock mass, the temperature of the entire borehole heat exchanger is assumed to be the same. In fact, the exchanger temperature changes both in the vertical and horizontal cross-sectional view of the exchanger. Accordingly, the temperature of the interface of the hardened cement slurry and the rock mass differs from the one which was adopted for design calculations. The article shows the differences between the theoretical and actual state, when the temperature was measured with a thermal imaging camera. It also includes suggestions regarding the mathematical description of temperature changes on the side surface of the heat exchanger. Measurements were made by a model of a BHE equipped with a single U-tube.