Browsing by Subject "reservoir pressure"

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Access status: Open Access ,
Changing well completion in a mature gas well using velocity string
(2008) Piteiu, Marcel A; Şuţoiu, Florinel; Simescu, Bogdan; Costin, Nicolae
In a gas field production decreases over time and can eventually stop producing completely because of liquid loading. As the reservoir pressure in a gas well depletes, there may be insufficient velocity to transport all liquids from the wellbore. In time, these liquids accumulate and impair production. The factors that are causing this problem include declining reservoir pressure, gas velocities and increased water production. One method of restoring a well that is liquid loaded back to flow production is installing a smaller diameter tubing string to run inside the production tubing of a well. Regarding advanced rate of depletion in Romgaz gas fields, reinjection method gives viable solutions to face the problems that appear in the exploitation of the wells with appreciable liquid impurities production.
Access status: Restricted ,
Możliwość oceny ciśnień złożowych na podstawie profilowań geofizyki wiertniczej w basenie Barnett Shale
(Data obrony: 2014-12-23) Kurek, Maria
Wydział Geologii, Geofizyki i Ochrony Środowiska
The paper discusses the physical basics related to pressure in the Earth and presents commonly used definitions and units. It also describes the processes that affect the overpressure, especially the compaction process, the minerals and rock transformation (under the high temperature and stress) and hydrocarbons occurrence. Then, on the bases of well logging data from Barnet Shale basin and Gulf of Mexico the pore pressure was calculated. The results from these two locations were analysed and compared. In conclusions, the factors that may affect the incorrect reservoir pressures assessment were discussed.
Access status: Open Access ,
Układ faz węglowodorowych w obszarze złożowym Lubiatów - Międzychód - Grotów (LMG)
(Wydawnictwa AGH, 2008) Słupczyński, Kazimierz; Machowski, Grzegorz; Papiernik, Bartosz; Semyrka, Roman
For the Lubiatów - Sowia Góra - Międzychód - Grotów (LMG) hydrocarbon reservoir zone, situated within the area of the Main Dolomite carbonate platform and its foreland, interfacial surfaces between natural condensate gas and gas-saturated oil was determined applying the criterion of stable equilibrium in porous-fractured media filled with separate hydrocarbon phases. Hydraulic connection between individual hydrocarbon accumulations was proved. It was evidenced that narrow zones with Main Dolomite thickness less than 15 m and different hypsometric positions play the role of semi-permeable boundaries only. The determined surfaces between natural gas and crude oil considerably extend the accumulation zone in the area of the carbonate platform and its foreland.