Abstract
Abstract As the reserves of easy-to-produce hydrocarbons continue to deplete, the trend has become switching to the exploration and development of formations with much more complex geology and low reservoir properties. In many cases, commercial production from such targets is subeconomic unless enhanced oil recovery techniques are used. The Lower Cretaceous Achimov oil- and gas-bearing horizon is one such target in the West Siberian oil and gas province. Commercial production from the Achimov within the 1st Achimov Block at the Urengoy oil and gas condensate field involves massive hydraulic fracturing (MHF) treatments, which make a significant contribution to the ultimate flow rate. Based on sufficient treatment experience within a specific area, a MHF pumping program can be optimized to improve hydraulic fracturing efficiency. Linear gels used as a spacer fluid can help create the best fracture geometry and minimize the adverse impact of hydraulic fracturing fluid breakdown products on the quality of low-permeability reservoirs.
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