A geological conference on issues involved in the construction of the Shakhrinav-1p well in the Sarikamysh license area in the Republic of Tajikistan was held at OAO Gazprom in late November.
Vsevolod Cherepanov, OAO Gazprom Management Board member and Gas, and Manager of Gas Condensate, and Oil Production was the chairman of the conference. Gazprom International, the Gazprom's global company dedicated to foreign upstream projects, was represented by Yuriy Skok, the Manager of the Moscow branch of Gazprom International, and Valeriy Cholovskiy, the Deputy Manager and Director of Engineering.
During the conference, it was mentioned that Shakhrinav-1p is the first and only prospecting and appraisal well in Tajikistan to penetrate deep underthrust deposits, the prospects for oil and gas in which are unknown as of yet. Drilling has produced unique geological data, which will be analyzed by professionals in great details in the very near future. Scientists’ expectations regarding oil and gas potential in deep underthrust deposits have been confirmed. The actual data obtained in the course of drilling will make it possible to optimize design solutions for future operations, define the direction of geological exploration, and minimize the effect of geological uncertainties while planning new wells. Such uncertainties make it impossible to assess the commercial aspects of Shakhrinav-1p.
The conference attendees acknowledged that complexity of the geological structure in the Sarikamysh area, which has been confirmed by drilling, at this point "makes it impossible to adjust the geological model without in-depth reprocessing of the available geophysical data".
To enhance the effectiveness of geological exploration in the Sarikamysh license area, the decision was made to update the geological model of the area in general, particularly the Shakhrinav structure. The conference attendees believe that such update will lead to refinement in the previous estimate of free gas and oil reserves in the Shakhrinav structure. Therefore, they consider it necessary to make a concerted effort to reinterpret the available geological data and conduct a comprehensive study based on the Shakhrinav-1p drilling results.
For further update of geological modeling, the decision was made to temporarily abandon the well until the updated geological model is produced, . A program for future operations in the license block, according to the results of the comprehensive reinterpretation, was discussed during the conference.
After the comprehensive study of the obtained materials, and defining directions for future efforts, OAO Gazprom plans to hold a geological conference in Dushanbe, to which all the concerned agencies of the Republic of Tajikistan will be invited, where the detailed data analysis will be presented and plans for future activities will be announced.
The relationship between OAO Gazprom and the Republic of Tajikistan is based on a long-term agreement (expiring in 2028) on strategic cooperation in the gas industry, which went into effect as of May 15, 2003, and an agreement on general principles for geological exploration in Tajikistan, which went into effect as of June 10, 2008.
Gazprom International, as the Gazprom's global company dedicated to foreign projects in the field of prospecting, exploration and development of hydrocarbon deposits outside the Russian Federation, is implementing an investment project for geological exploration in two license blocks in Tajikistan: Sarikamysh in the southwestern part of the country, and West Shokhambary in the west.
On June 11, 2013, the company completed drilling of the Shakhrinav-1p exploratory well in the Sarikamysh block. The well, for which drilling began in December 2010, is the deepest in the history of oil and gas drilling in Central Asia, with a depth of 6450 meters.
Eight potential oil and gas development targets were identified from the drilling results and a set of geological and geophysical surveys.
According to a previous estimate, free gas and oil reserves in the Shakhrinav structure could amount to 18 billion cubic meters and 17 million tonnes, respectively.
The total Gazprom investment in geological exploration in the license areas in Tajikistan since the start of exploratory surveys is over 5.5 billion rubles.