Gazprom Neft completes drilling and well testing at Dolginskoye field
Dolginskoye field operator Gazpromneft-Sakhalin (a subsidiary of Gazprom Neft) completed testing of a well drilled at the Dolginskoye field, Pechora Sea, in summer 2014. The completion of geophysical and hydrodynamic testing will allow clarification of the underlying structure of the field and the development of a programme for its further investigation. This is the first time that such a major volume of work has been completed at a well during this region’s short ice-free season.
Drilling of an exploratory well (to a depth of 3,500 metres) in the northern part of the Dolginskoye field was completed in late August 2014. A range of geophysical investigations (geophysical well logging) were undertaken in the process of constructing the well, including core sampling and sampling of drill cuttings, as well as vertical seismic profiling (a type of seismic survey, with detection equipment placed directly in the well), and testing of four different field strata, and other activities.
The completed programme allowed the collection of new information on the geological structuring of the Dolginskoye field, and the clarification of porosity, permeability and other geological features of the field, as well as other key criteria. Preparation of final reports on the results of drilling and well testing is coming to a close, with specialists from the Gazprom Neft Joint Scientific and Research Centre undertaking thoroughgoing analytical research on the samples and data obtained. The data collated will be used to develop a programme of works for the 2015 ice-free season.
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