The aim of the work was the solution to the problem of evaluating the representativeness of core network of wells for field monitoring of gas factor with predetermined maximum allowable error of measurement. The question of the justification of the minimum required number of wells for core network is associated with the fact that a number of objective reasons do not allow monitoring gas-oil ratio in all wells. The proposed approach to the evaluating the representativeness of core network is based on statistical methods that can be applied to solve other control problems of field development, for example, the monitoring reservoir pressure profile, because it is general in nature. We considered the evaluation of the representativeness of core network for measurement of the gas-oil ratio on the example of one of the fields in the western part of the Republic of Bashkortostan. For this field, it is shown that the core network of wells should be at least 70% of the all producing wells on the examined object of development. It is noted that the value of the coverage of the core network of wells 70% applies to this particular case. At lower magnitude of the range of gas factor values for individual wells minimum required core network of wells can be much smaller.
References
1. Ignatov I.S., Lozin E.V., Imashev R.N., Fedorov V.N., Field studies on gas-oil ratios for target production zones of Bashneft JSOC oil fields (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2012, no. 4, pp. 48–50.
2. Romanovskiy V.I., Matematicheskaya statistika (Math statistics), Moscow: Publ. of GONTI, 1938, 528 p.
3. Kvesko N.G., Chubik P.S.,Metody i sredstva issledovaniy (Research methods and instrument), Tomsk: Publ. of TPU, 2010, 112 .
4. Kassandrova O.N., Lebedev V.V., Obrabotka rezul'tatov nablyudeniy (Analysis of observations), Moscow: Nauka Publ., 1970, 104 p.
5. Imashev R.N., Fedorov V.N., Zaripov A.M., On the gas factor change in the
process of Arlanskoye field development (In Russ.), Neftyanoe khozyaystvo =
Oil Industry, 2016, no. 8, pp. 122-125.вЃ
