OREANDA-NEWS. December 10, 2010. Oil Production. TATNEFT produced 2,131,437 tons of crude oil in November with the above-the-plan production in the amount of 43, 717 tons (102.1%). The volume of crude oil produced by TATNEFT from the beginning of the year amounted to 23,681,146 tons accounting for 25,454 tons surplus compared to the amount of 2009 (100.1%). The above the-plan-production amounted to 438,498 tons of crude oil (101.9%). The amount of 23,156,444 tons of crude oil was delivered with the above-the-plan delivery amounting to 426,914 tons, reported the press-centre of TATNEFT.

Drilling.New Drilling.

The penetration during an eleven months period of 2010 amounted to 572.4 thousand meters

(496 thousand meters in 2009):

- 450.9 thousand meters were drilled for TATNEFT (381.7 thousand meters in 2009), including 431.5 thousand meters of production drilling and 19.4 thousand meters of exploratory drilling;

- 23.2 thousand meters were drilled for TATNEFT's subsidiaries and affiliated companies (35.2 thousand meters in 2009), including 8.3 thousand meters of production drilling and 14.9 thousand meters of exploratory drilling;

- 98.3 thousand meters were drilled for joint ventures and independent oil companies (79.1 thousand meters in 2009), including 86.3 thousand meters of production drilling and 12 thousand meters of exploratory drilling.

Totally 391 wells (330 wells in 2009) were constructed and handed over to customers:

- 287 wells (256 wells in 2009) were constructed for TATNEFT with 277 production wells and 10 exploratory wells;

- 11 wells (22 wells in 2009) were constructed for TATNEFT's subsidiaries and affiliated companies with 7 production wells and 4 exploratory wells;

- 93 wells (52 wells in 2009) were constructed for joint ventures and independent oil companies, including 85 production wells and 8 exploratory wells.

Drilling in the Old Well Stock
Penetration of sidetracking and horizontal wellbores for eleven months of 2010 amounted to 29.3 thousand meters (25.8 thousand meters in 2009):

- 17.3 thousand meters were penetrated for TATNEFT (16.4 thousand meters in 2009),

- 12 thousand meters (9.4 thousand meters in 2009) were drilled for joint ventures and independent oil companies.

Totally 81 wells (73 wells in 2009) were delivered to the customers, including :

- 52 wells (54 wells in 2009) were delivered to TATNEFT;

- 29 wells (19 wells in 2009) were delivered to joint ventures and independent oil companies.

37 drilling crews performed drilling of new wells in 2010. 8 drilling crews were engaged in sidetrack penetration and drilling horizontal wellbores. Penetration per one crew in new drilling amounted to 15,579 meters in 2010, while in 2009 the penetration per crew amounted to 13,345 meters.

25.9 thousand meters were penetrated outside the Republic of Tatarstan. 63.6 thousand meters were penetrated in horizontal wells and multi-branched downhole splitters.

Well Repairs
792 well remedial operations were performed in November 2010 and 8,381 remedial operations were performed during the period of eleven months, i.e. 472 wells or 5.3% less then in 2009 (8,853 wells were repaired during 11 months of 2009).

42 well repair operations have been performed in Tatneft-Samara from the beginning of the year, including 21 well remedial operations and 21 workover operations (39 operations were performed during 11 months of 2009).

The workover operations were performed at 2,442 wells during an eleven months period of 2010 (218 in November), (1,854 for 11 months in 2009), including: production string sealing in 386 wells; shutting-off individual layers and recompletion in other intervals in 276 wells; transfer of wells into different categories and wells completion for injection in 131 wells; failure liquidation and cleaning of the electrical cable and bottom hole areas in wells and physical liquidation and re-liquidation in 41 wells.

793 wells were worked over with application of coil tubing (71 in November), (510 wells for 11 months of 2009), including 185 wells worked over through the annulus.

Formation hydrofracking operations were performed in 219 wells (13 wells in November), (111 wells for 11 months of 2009). The cumulative incremental oil recovery amounted to 3 million 626 thousand tons.

25 slim holes have been drilled and completed for TATNEFT from the beginning of the year. At present slim holes drilling is performed in NGDU Yamashneft.

Works on oil recovery enhancement operations were performed at 2,172 wells (181 wells in November), (1,564 wells during 11 months in 2009), including chemical treatment methods applied at 1,292 wells (125 wells in November), (902 wells for 11 months in 2009).

The incremental oil production resulting from application of the enhanced oil recovery methods amounted to 4 million 885 thousand tons (102% to the plan), (4,721 thousand tons for 11 months of 2009) with the chemical methods accounting for the production of 2 million 355 thousand tons (103% to the plan), (2,257 thousand tons for 11 months of 2009).