Gazpromneft-Orenburg (a subsidiary of Gazprom Neft) has commissioned the primary high-tech effectively constructed utilizing multi-storey drilling expertise. This new method makes it attainable to extend preliminary manufacturing by greater than 40 p.c, in addition to growing floor effectivity (the “sweep ratio”) and growth drilling effectivity.
Constructed on the Vostochny licence block on the Orenburg oil and gas-condensate subject (VU ONGKM), the “multi-storey” effectively is a type of multilateral effectively with a number of branches from the principle wellbore — its distinguishing function being the replication of horizontal wells all through all the oil-saturated layer, in a single azimuthal path. The horizontal part’s distinctive development leads to better sweep effectivity, oil restoration, and drilling effectivity. Introducing new wells of this type is anticipated to considerably improve the preliminary movement fee in addition to slowing its discount thereafter, and is anticipated to be replicated in ongoing checks.
The first effectively utilizing this expertise has been constructed at Gazpromneft-Orenburg to date, with 4 horizontal wells working to lengths of 150 to 500 metres. Commercial oil movement was obtained in October, at a stage 40 p.c above the preliminary movement fee. Construction of a second effectively is now in hand on the VU ONGKM, utilizing improved “multi-storey with fracking (MSW-frac)”, expertise involving multi-stage acid fracking. This new expertise will result in technological and cost-efficiency enhancements in manufacturing drilling. Following checks on preliminary multi-storey wells Gazpromneft-Orenburg will take a call on rolling-out this expertise within the subsequent growth of the VU ONGKM.
MSW-frac (Multi-storey effectively + fracking) — is a expertise involving multi-stage drilling along with hydraulic fracking. This method includes the selective pinpointing of every wellbore by the multi-stage fracking tail pipe being lowered into the principle wellbore and fracking couplings being connected to the shearing goal of every subsequent department pipe. (Source and picture: Gazprom Neft/Drilling rig in Orenburg area)
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