OREANDA-NEWS. May 17, 2013.
Crude Oil Production
The amount of 2,144,224 tons of crude oil was produced at JSC TATNEFT in April (100.8 percent versus a similar period of the previous year) with the above-the-plan production in the amount of 56,304 tons (102.7 percent). 8,568,138 tons of crude oil were produced during four months with the above-the-plan production amounting to 216,638 tons (102.6 percent). 8,416,171 tons of oil were delivered with the above-the-plan delivery amounting to 227,401 tons.

New Drilling
The new drilling penetration for four months of 2013 amounted to 182 thousand meters (215.9 thousand meters in 2012). Of this amount 140.1 thousand meters (159.2 thousand meters in 2012) were penetrated for JSC TATNEFT, including production drilling in the amount of 138.9 thousand meters and exploratory drilling amounting to 1.2 thousand meters. 15.4 thousand meters (17.3 thousand meters in 2012) were penetrated for the subsidiaries of JSC TATNEFT, including production drilling in the amount of 14.7 thousand meters and exploratory drilling in the amount of 0.7 thousand meters.

112 wells (113 wells in 2012) were constructed and delivered to the customers with 79 wells (76 wells in 2012) delivered to JSC TATNEFT, including 77 wells of production drilling and 2 wells of exploratory drilling. 13 wells were delivered to the subsidiaries of JSC TATNEFT (8 wells in 2012) including 9 wells of production drilling and 4 wells of exploratory drilling.

Active Well Stock Drilling
The penetration of sidetracking and horizontal wellbores during four months of 2013 amounted to 16.4 thousand meters (12.3 thousand meters in 2012). 8.1 thousand meters (6.4 thousand meters in 2012) were drilled for JSC TATNEFT.

30 wells (24 wells in 2012) were delivered to the customers. Of this amount 20 wells (16 wells in 2012) were delivered to JSC TATNEFT.

35 drilling crews have been performing well drilling operations since the beginning of 2013; 12 drilling crews are engaged in drilling lateral and lateral horizontal wellbores. One drilling crew performs drilling to the bituminous deposits of Ashalchinskoye field for NGDU "Nurlatneft". The penetration per crew during four months of 2013 amounted to 5,076 m, while in 2012 the penetration per crew amounted to 5,466.7 m. 21.2 thousand meters were penetrated outside the Republic of Tatarstan.

Repair of Wells
In April 2013 remedial servicing operations were performed in 665 wells (632 wells in April of 2012) with a number of wells serviced during four months amounting to 2,737 (2,751 wells during four months of 2012).

24 wells were repaired outside the Republic of Tatarstan, including 21 wells for "Tatneft-Samara", 2 wells for "Tatneft-Severny" and 1 well for JSC "Ilekneft" (17 wells were repaired during four months of 2012 with 16 wells repaired for "Tatneft-Samara" and 1 well for JSC "Ilekneft").

The workover operations were performed in 813 wells during four months of the current year (195 wells in April), including production string sealing performed in 88 wells, shutting-off individual layers and recompletion in other intervals were performed in 57 wells, transfer of wells into different categories and wells completion for injection in 68 wells, liquidation of downhole complications and cleaning of production casing and bottomhole in 51 wells, installation of isolating packers and dual completion systems in 53 wells and physical liquidation in 6 wells and re-liquidation in 2 wells.

199 wells were worked over with application of coil tubing (46 wells in April), including 39 wells worked over through the annulus.

Formation hydrofracking operations were performed in 187 wells (53 wells in April) (126 wells during four months of 2012). The cumulative incremental crude oil production amounted to 6 million 598 thousand tons.

Two workover crews drilled and completed 9 small diameter wells for JSC TATNEFT during four months of 2013.

Works on oil recovery enhancement were performed in 753 wells (176 wells in April), including chemical methods applied in 358 wells (70 wells in April).

The incremental crude oil production resulting from application of crude oil recovery enhancement methods amounted to 1,953 thousand tons (1,887 thousand tons during 4 months of 2012) with application of chemical methods accounting for 820 thousand tons (858 thousand tons during 4 months of 2012).

Bottomhole area treatment operations with application of JSC TATNEFT's technologies were performed in 1,056 wells during four months of 2013.

Production Performance of the JSC TANECO
Scheduled major repairs were performed at the TANECO Refining and Petrochemical Plants Complex from April 11 to 30, 2013. Because of the abovementioned repairs 213.0 thousand tons of crude oil were processed during ten days of the refinery operation with the yield of the oil products in the amount of 211.7 thousand tons.