|Publisher||International Petroleum Technology Conference||Language||English|
|Content Type||Conference Paper|
|Title||Application of Horizontal Wells with Multiple Hydraulic Fractures for the Development of Low Permeability Oil Reservoir in Western Siberia|
E.Sayapov, SPE, Halliburton, I.R. Diyashev and A.V. Brovchuk, SPE, IRDC
International Petroleum Technology Conference, 7-9 December 2009, Doha, Qatar
2009, International Petroleum Technology Conference
|1 Drilling and Completions
In Western Siberia, Russia low permeability oil and gas formations may become an increasingly important source for petroleum production in the near future. In Yamalo-Nenetsky Autonomous region alone there is an estimated 100 billion bbl of oil in place of marginal reserves or contingent resources. These resources are much more challenging and require a comprehensive and technically complex approach from the operators to be effectively developed. Development of these resources is additionally complicated by climate conditions due to closeness to Polar circle. However, compared to development of resources of Russian Arctic offshore fields or the fields in Eastern Siberia with a very limited or non-existent transportation, production and service infrastructure these low permeability resources can be quite attractive.
This paper presents a case study of a pilot development of Jurassic
reservoir of Palnikovskoe oil field. The reservoir rock is shaly sandstone and
siltstone with about 14% porosity and 0.1 md permeability. Vertical wells in
this area, even being hydraulically fractured, still produce below economic
limits. Horizontal wells with multiple transverse hydraulic fractures have been
shown to produce much more than vertical wells and were successfully applied in
low permeability reservoirs in Texas, Bakken Shale USA, Danish sector of North
The Concept of «Resources pyramid” Is based on the hypothesis that mineral
resources are distributed log-normally. The resources of minerals like gold,
diamonds, silver, uranium honor this distribution. High quality reserves of
these minerals are very scarce and small. Resources of lower quality are vast,
however, exploitation of these resources are often just marginally economic.
Two factors can help to shift these resources into the profitable exploitable
reserves: resources prices in the market and technology improvements that may
significantly lower the costs.
|File Size||392 KB||10|