OREANDA-NEWS. March 09, 2012.
Crude Oil Production
TATNEFT produced 4,254,538 tons of crude oil during two months of 2012 or 101.5% versus the level of the past year with the above-the-plan production amounting to 94,204 tons (102.3%). The amount of 4,199,435 tons of crude oil was delivered with the above-the-plan delivery amounting to 139,535 tons, reported the press-centre of TATNEFT.

New Drilling
The total new drilling penetration for 2 months of 2012 amounted to 100 thousand meters (83.4 thousand meters in 2011), including 72.1 thousand meters (69.9 thousand meters in 2011) drilled for TATNEFT with production drilling amounting to 69.8 thousand meters and exploratory drilling amounting to 2.3 thousand meters; 8,8 thousand meters (6 thousand meters in 2011) were drilled for subsidiaries of TATNEFT, including production drilling in the amount of 6.1 thousand meters and exploratory drilling amounting to 2.7 thousand meters.

48 wells (56 wells in 2011) were constructed and delivered to the customers, including 30 wells to TATNEFT (32 wells in 2011) with production drilling accounting for 29 wells and exploratory drilling - 1 well. There were no wells delivered to the subsidiaries of TATNEFT in 2 months of 2012 (4 wells in 2011).

Active Well Stock Drilling
Total penetration of sidetracking and horizontal wellbores during two months of 2012 amounted to 6.3 thousand meters (6.9 thousand meters in 2011), including 3.6 thousand meters (5 thousand meters in 2011) for TATNEFT.

7 wells (8 wells in 2011) were delivered to the customers, including 6 wells (6 wells in 2011) delivered to TATNEFT.

40 drilling crews have been performing traditional well drilling operations since the beginning of 2012. 7 drilling crews are engaged in drilling lateral wellbores and lateral horizontal wellbores. One drilling crew is performing drilling to the bituminous deposits of Ashalchinskoye field for NGDU "Nurlatneft". The penetration per crew amounted to 2,456 meters for 2 months of 2012 (in 2011the penetration per crew for two months amounted to 2,308 meters).

14.5 thousand meters were drilled outside the Republic of Tatarstan.

Wells Repair
742 well remedial operations were performed in February 2012 with a number of the wells subjected to remedial operations for two months amounting to 1,387 (1,288 wells in 2 months of 2011), including 1,173 production and 158 injection wells.

4 wells were repaired outside the Republic of Tatarstan for "Tatneft-Samara" (7 wells for two months of 2011, including 5 wells for "Tatneft-Samara" and 2 wells for "Tatneft-Severny").

The workover operations were performed in 365 wells during two months of the current year (224 wells in February), including production string sealing performed in 53 wells, shutting-off individual layers and recompletion in other intervals were performed in 31 wells, transfer of wells into different categories and wells completion for injection in 24 wells, failure liquidation and cleaning of the production string and bottom hole zone in 34 wells, installation of isolating packers and dual completion systems in 8 wells and physical liquidation and re-liquidation in 2 wells.

112 wells were worked over with application of coil tubing (75 wells in February), including 25 wells worked over through the annulus.

Formation hydrofracking operations were performed in 62 wells (33 wells in February) accounting for 19 wells increase versus the similar period in 2011 (43 wells during 2 months of 2011). Cumulative incremental crude oil production resulting from application of this method amounted to 5 million and 376 thousand tons.

3 small diameter wells were drilled and completed for TATNEFT during 2 months of 2012. At present drilling of one slim hole is in progress for each of the following NGDUs: "Prikamneft", "Almetyevneft" and "Yamashneft".

Works on oil recovery enhancement were performed in 373 wells (215 wells in February), including chemical methods applied in 215 wells (in 127 wells February).

Incremental crude oil production resulting from application of the crude oil recovery enhancement methods amounted to 940 thousand tons, with application of chemical methods accounting for production of 429 thousand tons.

Bottomhole area treatment operations with application of TATNEFT's technologies were performed in 509 wells during 2 months of 2012.