- Tytuł:
- Hydrogeochemical modeling of water injection into an oil and gas well under high-pressure high-temperature (HPHT) conditions
- Autorzy:
-
Krogulec, Ewa
Sawicka, Katarzyna
Zabłocki, Sebastian - Powiązania:
- https://bibliotekanauki.pl/articles/1835584.pdf
- Data publikacji:
- 2020
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
water injection
well
hydrogeochemical modeling
Zechstein Main Dolomite
Polska
wtrysk wody
odwiert
modelowanie hydrogeochemiczne
cechsztyński dolomit główny
Polska - Opis:
- Approximately 80% of water extracted from oil and gas deposits in Poland is disposed of by injection into the rock matrix. The aim of the model research was to predict both the hydrochemical reactions of water injected into wells for its disposal and the hydrogeochemical processes in the reservoir formation. The purpose of hydrogeochemical modeling of the hydrocarbon formation was also to determine the potential of formation waters, injection waters, and their mixtures to precipitate and form mineral sediments, and to determine the corrosion risk to the well. In order to evaluate saturation indices and corrosion ratios, the geochemical programs PHREEQC and DownHole SAT were used. The results of hydrogeochemical modeling indicate the possible occurrence of clogging in the well and the near-well zone caused mainly by the precipitation of iron compounds (iron hydroxide Fe(OH)3 and siderite FeCO3) from the formation water due to the presence of high pressures and temperatures (HPHT). There is also a high certainty of the precipitation of carbonate sediments (calcite CaCO3, strontianite SrCO3, magnesite MgCO3, siderite FeCO3) from the injection water within the whole range of tested pressures and temperatures. The model simulations show that temperature increase has a much greater impact on the potential for precipitation of mineral phases than pressure increase.
- Źródło:
-
Acta Geologica Polonica; 2020, 70, 3; 419-433
0001-5709 - Pojawia się w:
- Acta Geologica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł