Severneftegazprom selected the Schlumberger PIPESIM solution for automated field development analysis. It initiated a joint project with Schlumberger to create and analyze the PIPESIM field model.
PIPESIM software is a steady-state, multiphase flow simulator for the design and diagnostic analysis of oil and gas production systems. Software tools model multiphase flow from the reservoir to the wellhead. PIPESIM software also analyzes flowline and surface facility performance to generate comprehensive production system analysis. Using the simulation approach helped to optimize well regimes, to decrease daily volumes of methanol injection, and to improve quality control of measured data from wells and well test results.
PIPESIM software was used to build models of all the production wells and the pipeline network, from downhole to processing plant input. Data sources included well test results, pressure/volume/temperature data, daily production reports, and data from the SCADA system. A comparison of model forecasts against observed data determined that the model was of excellent quality.
Using the proven field model, the joint team of Severneftegazprom and Schlumberger engineers analyzed well operating regimes to estimate the rate of gas hydrate formation. The operations detected more than 100 wells with hydrate-free regimes, which resulted in a series of workovers to optimize methanol use. Overall methanol use was decreased by 30%—several hundred tons between April and September 2010.