Browsing by Subject "workover operations"

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Access status: Open Access ,
Rigless jobs in gas wells
(2013) Şuţoiu, Florinel; Tătaru, Argentina; Simescu, Bogdan
At the same time with gas reservoirs energetic depletion there appears the perforation deterioration or blockage issue. Mostly, in the mature gas reservoirs, a big attention must be given to well interventions for maintaining or increasing the production. Because of the workover operation risks and costs, the oil companies prefer as much as possible rigless jobs to accomplish well stimulation like reperforation or several coil tubing operations (acidizing, fracturing etc). In our rehabilitation programs for many gas reservoirs, our company accomplished successfully more stimulation jobs. In this paper, we will present some case studies and results obtained after several rigless operations which assure long term production increases.
Access status: Open Access ,
Wymagane parametry cieczy roboczych dla ochrony pierwotnych właściwości skał zbiornikowych
(2008) Uliasz, Małgorzata; Herman, Zdzisław
Before the workover or stimulation operations are started the well must be filled with so-called completion fluid which hydrostatic pressure overcomes reservoir pressure and protect against reservoir fluid flow into the well. The completion fluids are mixtures of artificial salt solution and filtrated reservoir waters. The authors discussed properties of completion fluids which were prepared in OGI laboratories.