OREANDA-NEWS. June 10, 2013.
Crude Oil Production
The amount of 2,217,961 tons of crude oil was produced at JSC TATNEFT in May accounting for 100.8 percent versus May 2012 (+18,453 tons). The amount of 10,786,099 tons of crude oil was produced during five months, which was 4,891 tons more than in 2012 (100.05 percent) with the above-the-plan production in the amount of 277,089 tons (102.6 percent) with the above-the-plan production amounting to 216,638 tons (102.6 percent). 10,619,358 tons of oil were delivered with the above-the-plan delivery amounting to 318,948 tons.

The production volume of TATNEFT Group of Companies amounted to 10,918,534 tons of crude oil with the above-the-plan delivery in the amount of 277,816 tons (102.6 percent)

New Drilling
The new drilling penetration for five months of 2013 amounted to 284 thousand meters (273.3 thousand meters in 2012). Of this amount 181.3 thousand meters (199.3 thousand meters in 2012) were penetrated for JSC TATNEFT, including production drilling in the amount of 180/1 thousand meters and exploratory drilling amounting to 1.2 thousand meters. 18.7 thousand meters (23.5 thousand meters in 2012) were penetrated for the subsidiaries of JSC TATNEFT, including production drilling in the amount of 16.4 thousand meters and exploratory drilling in the amount of 2.3 thousand meters.

142 wells (153 wells in 2012) were constructed and delivered to the customers with 101 wells (106 wells in 2012) delivered to JSC TATNEFT, including 99 wells of production drilling and 2 wells of exploratory drilling. 15 wells were delivered to the subsidiaries of JSC TATNEFT (11 wells in 2012) including 11 wells of production drilling and 4 wells of exploratory drilling.

Active Well Stock Drilling
The penetration of sidetracking and horizontal wellbores during five months of 2013 amounted to 22 thousand meters (16.7 thousand meters in 2012). 11.4 thousand meters (9 thousand meters in 2012) were drilled for JSC TATNEFT.

43 wells (35 wells in 2012) were delivered to the customers. Of this amount 29 wells (19 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 five months of 2013 amounted to 6,535 m, while in 2012 the penetration per crew amounted to 7,006 m. 26.2 thousand meters were penetrated outside the Republic of Tatarstan.

Repair of Wells
In May 2013 remedial servicing operations were performed in 599 wells (552 wells in May of 2012) with a number of wells serviced during five months amounting to 3,336 wells (3.303 wells during five months of 2012).

30 wells were repaired outside the Republic of Tatarstan, including 27 wells for OOO "Tatneft-Samara", 2 wells for "Tatneft-Severny" and 1 well for JSC "Ilekneft" (25 wells were repaired during five months of 2012 with 24 wells repaired for "Tatneft-Samara" and 1 well for JSC "Ilekneft").

The workover operations were performed in 1,008 wells during five months of the current year (195 wells in May), including production string sealing performed in 109 wells, shutting-off individual layers and recompletion in other intervals were performed in 69 wells, transfer of wells into different categories and wells completion for injection in 79 wells, liquidation of downhole complications and cleaning of production casing and bottomhole in 59 wells, installation of isolating packers and dual completion systems in 67 wells and physical liquidation in 6 wells and re-liquidation in 5 wells.

239 wells were worked over with application of coil tubing (42 wells in May), including 47 wells worked over through the annulus.

Formation hydrofracking operations were performed in 242 wells (55 wells in May) (158 wells during five months of 2012). The cumulative incremental crude oil production amounted to 6 million 735 thousand tons. In addition a multi-zone acid fracturing job was performed in eight intervals of well 315g, Yaurkinskoye field of "Tatneft-Samara" from May 18 to 27 of 2013.

Two workover crews drilled and completed 9 small diameter wells for JSC TATNEFT during five months of 2013. Currently drilling one well is underway in NGDU "Prikamneft" and NGDU "Bavlyneft".

Works on oil recovery enhancement were performed in 975 wells (215 wells May) with application of chemical methods in 464 wells (106 sells in May).

The incremental crude oil production resulting from application of crude oil recovery enhancement methods amounted to 2,447 thousand tons with application of chemical methods accounting for 1,019 thousand tons (1,076 thousand tons during 5 months of 2012).

Bottomhole area treatment operations with application of JSC TATNEFT's technologies were performed in 1,276 wells during five months of 2013.

Production Performance of the JSC TANECO
The TANECO Complex of Refining and Petrochemical Plants processed 681.1 thousand tons of crude oil and yielded 646,63 thousand tons of oil products in May 2013.