OREANDA-NEWS. December 14, 2007.Oil production. Crude oil production in the Republic of Tatarstan amounted to 2,573,123 tons of crude oil in November accounting for 100,55% versus November 2006 while the amount of 29,273,866 tons of crude oil was produced from the beginning of the year or 102,1% versus the same period of the last year, reported the press-centre of Tatneft.

OAO TATNEFT produced 2,055,889 tons of crude oil in November with the above-the-plan production amounting to 30,299 tons (101,5%). The best results were achieved by NGDUs (Oil and Gas Production Boards) Bavlyneft (105,8%), Yamashneft (103,15%), and Elkhovneft (102,3%). The amount of 2,028,366 tons of crude oil was delivered with the above-the-plan production amounting to 60,666 tons.

OAO TATNEFT produced 23,612,293 tons of crude oil from the beginning of the year demonstrating growth in the amount of 321,314 tons versus the similar period of the previous year (101,4%). The above-the-plan production amounted to 365,792 tons of crude oil (101,6%). The best results were achieved by NGDUs (Oil and Gas Production Boards) Elkhovneft (103,35%), Yamashneft (102,86%), and Bavlyneft (102,4%).

The amount of 23,356,247 tons of crude oil was delivered by the first quality group with the above-the-plan delivery amounting to 740,847 tons.

Drilling
Tatneft-Burenie (Drilling) Company executed the plan of drilling meterage for eleven months of 2007 by 106,3% with 737,9 thousand meters penetrated, including  488,7 thousand meters drilled for OAO TATNEFT (106,0%), 248,5 thousand meters drilled for Joint Ventures and small independent oil companies; and 700 m drilled to the bitumen deposits.

492 wells were constructed and handed over to customers including 300 wells for OAO TATNEFT (113,2% to the plan), 191 wells for Joint Ventures and independent oil producing companies and 1 well drilled to the bitumen deposits.

Well drilling operations with application of traditional drilling techniques were performed by 48 drilling crews, including 2 crews operating on a subcontract basis. Two crews performed drilling into the producing layers in the balanced pressure mode and in the mode of underbalanced drilling (UBD).

Four drilling crews performed drilling operations outside the Republic of Tatarstan in Samara District and one drilling crew preformed drilling in Orenburg District.

One drilling crew performed drilling of exploratory wells for OAO "Podzemburgaz" under the industrial program of the Republic of Tatarstan intended for construction of underground gas storage.

The volume of horizontal wellbore drilling and sidetracking performed by Tatneft-Burenie (Drilling) Company amounted to 5,117 meters with 16 wells handed over to the customers for operation.

Penetration per one drilling crew amounted to14,740 meters during the period of 11 months.

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OOO TNG-Lenburneft Company penetrated 37,1 thousand meters during the last eight months period (April-November), including drilling of 22,3 thousand meters drilled for OAO TATNEFT including drilling of 3,9 thousand meters under subcontract with OOO Tatneft-Burenie (Drilling) Company and including drilling of 12,6 thousand meters drilled for joint ventures and small oil companies, and 2,2 thousand meters drilled to the bitumen deposits.

28 wells were constructed and handed over to customers for operation including 19 wells for OAO TATNEFT, 2 wells drilled to the bitumen deposits, and 7 wells drilled for joint ventures and independent oil companies.

6 drilling crews performed drilling operations in this company with 2 of the crews performing drilling on a sub-contractual basis, 1 crew performed drilling for NGDU Leninogorskneft, 2 crews performed drilling for Tatneft-Samara Company and 1 crew performed drilling  for ООО "BaiTex".

Sidetracking operations in the old well stock were performed by 8 crews with 3 crews operating in Orenburg District, 3 crews operating for OAO TATNEFT, and 2 crews performed drilling for ZAO Tatoilgaz". The volume of horizontal wellbore drilling and sidetracking performed during the period of the last eight months amounted to 17.4 thousand meters with 55 wells handed over to the customers for operation.


Workovers and EOR (Enhanced Oil Recovery)
906 well remedial works were performed in November with 9,446 well remedial works performed from the beginning of the year.

2,451 wells were worked over during the period of eleven months of the current year (214 wells in November), including the production string sealing in 352 wells; shutting-off individual layers and re-completion in the other intervals in 398 wells; transfer of the wells into different categories and wells completion for injection in 169 ones; well failure remedy and cleaning of the production casing and the bottom hole in 135 wells; physical well abandonment and re-abandonment in 71 wells.

589 wells were worked over with application of coil tubing (59 wells in November) with 117 worked over through the annulus (14 wells in November).

Hydrofracking treatment operations were performed at 113 wells with cumulative incremental crude oil production amounting to 1,765 thousand tons.

Two crews of the self-sustained section constructed eleven small diameter wells during the period of June - November: 5 wells for NGDU Nurlatneft and 6 wells for NGDU Almetyevneft..
Works on oil recovery enhancement were performed at 2,218 wells (180 wells in November), including chemical treatment methods applied at 1,406 wells (108 wells in November). Incremental oil production resulting from application of the oil recovery enhancement methods amounted to 4 million 687 thousand tons (104% to the plan), with chemical methods accounting for 2 million 251 thousand tons (48% from the total incremental crude oil production through application of crude oil recovery enhancement methods).

Neftechimservice Company produced 28.5 thousand tons of chemicals for the amount of 526 million rubles, including 7, 287 tons of chemicals for outside companies.