OREANDA-NEWS. October 5, 2007. Oil production. Crude oil production in the Republic of Tatarstan amounted 2,599.2 thousand tons (101.1% versus September 2006) in September with the amount of 24,041.2 thousand tons produced from the beginning of the year or 102.5% versus the same period of the last year.
 
OAO TATNEFT produced 2,089.3 thousand tons of crude oil in September (accounting for 100.5% versus the month of September of the previous year) with the above-the-plan production amounting to 8.2 thousand tons of crude oil (100.4%).

The amount of 2,054.3 thousand tons of crude oil was delivered with the above-the-plan delivery amounting to 30.8 thousand tons.

OAO TATNEFT produced 19,428.6 thousand tons of crude oil from the beginning of the year demonstrating growth in the amount of 326.8 5 thousand tons versus the similar period of the previous year (101.7%). The above-the-plan production amounted to 311.2 thousand tons of crude oil (101.6%). The best results were achieved by NGDUs (Oil and Gas Production Boards) Elkhovneft, Yamashneft and Leninogorskneft.

The amount of 19,258.2 9 thousand tons of crude oil was delivered by the first quality group with the above-the-plan delivery amounting to 652.8 thousand tons..


Drilling

Tatneft-Burenie (Drilling) Company executed the plan of drilling meterage for nine months of 2007 by 107.0% with 619.6 thousand meters penetrated, including 412.2 thousand meters drilled for OAO TATNEFT (110.3 %); 206.7 thousand meters drilled for Joint Ventures and small independent oil companies; and 700 m drilled to the bitumen deposits.

398 wells were constructed and handed over to customers including 244 wells for OAO TATNEFT (115.6% to the plan); 153 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 and additionally by 3 crews operating on a subcontract basis. One crew 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.
 
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 to 12,247 meters during the period of 9 months.

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OOO TNG-Lenburneft Company penetrated 29.7 thousand meters during the last six months period (April-September) with 19.9 thousand meters drilled for OAO TATNEFT, including drilling of 2.6 thousand meters under subcontract with OOO Tatneft-Burenie (Drilling) Company, 8.3 thousand meters drilled for joint ventures and small oil companies, and 1.5 thousand meters drilled to the bitumen deposits.

23 wells were constructed and handed over to customers for operation including 15 wells for OAO TATNEFT, 2 wells drilled to the bitumen deposits, and 6 wells drilled for joint ventures and independent oil companies.

5 drilling crews performed drilling operations in this company with 4 of the crews drilling for NGDU Leninogorskneft, while 1 crew performed drilling for Tatneft-Samara Company.

Sidetracking operations in the old well stock were performed by 10 crews, including 1 crew operating on a subcontract basis, with 2 crews operating in Orenburg District and 8 crews operating for OAO TATNEFT. The volume of horizontal wellbore drilling and sidetracking performed during the period of the last five months amounted to 13.7 thousand meters with 39 wells handed over to the customers for operation.

Workovers and EOR (Enhanced Oil Recovery)

911 well remedial works were performed in September (7,628 well remedial works were performed from the beginning of the year). The lost crude oil production due to well shut-down period and waiting for remedial works amounted to 168 thousand tons accounting for 10% reduction versus the similar period in 2006.

2,009 wells were worked over during the period of nine months of the current year скважин (249 wells in September), including the production string sealing in 281 wells; shutting-off individual layers and recompletion in the other intervals in 351 wells; transfer of the wells into different categories and wells completion for injection in 157 wells; well failure remedy and cleaning of the production casing and the bottom hole in 143 wells; physical well abandonment and re-abandonment in 60 wells.
480 wells were worked over with application of coil tubing (67 wells in September) with 97 wells worked over through the annulus (8 wells in September).

Formation hydrofracking operations were performed at 94 wells (13 wells in September). The cumulative incremental crude oil production volume amounted to 1,664 thousand tons.

Two crews of the self-sustained section constructed seven small diameter wells during the period of June-September: 4 wells for NGDU Nurlatneft (No. 4314, No. 4316, No. 4317 and No. 4313) and 3 wells for NGDU Almetyevneft  (No. 9563А, No. 25329А and No. 25329). Construction of two small diameter wells for NGDU Nurlatneft (No. 4312) and NGDU Almetyevneft  (No. 25330) is in the process at present.
 
Works on oil recovery enhancement were performed at 1,824 wells (223 wells in September), including chemical treatment methods applied at 1,146 wells (138 wells in September). The additional crude oil production through application of oil recovery enhancement methods amounted to 3 million 834 thousand tons (106% to the plan) with chemical methods accounting for production of crude oil in the amount of 1 million 827 thousand tons (48% of the total incremental oil produced through application of the enhanced recovery methods).

Neftechimservice Company produced 24 thousand tons of chemicals for the amount of 437 million rubles, including, including 6,289 tons of chemicals for outside companies.

The works on radial drilling projects by OOO RV-Plast were performed at 24 wells of OAO TATNEFT (7 wells in September) including 15 wells for NGDU Prikamneft, 3 wells for NGDU Prikamneft and 3 wells for NGDU Yamashneft, respectively, 2 wells for NGDU Elkhovneft and 1 well for NGDU Almetyevneft. Cumulative incremental crude oil production volume through application of radial drilling amounted to 147 thousand 165 tons.