«Oilfield engineering»

Analysis of waterproof works technology on the basis of reagents of domestic large-tonnage chemical production

UDC: 622.276.7:678
DOI: 10.33285/0207-2351-2023-2(650)-35-43

Authors:

¹ Institute of Oil and Gas, Ufa State Petroleum Technological University (branch in the City of Oktyabrsky), Oktyabrsky, Oktyabrsky, Republic of Bashkortostan, Russia
² Tatneft, Almetyevsk, Russia

Keywords: waterproofing works, pilot works, well, cost-effective technologies, water inflow limitation, efficiency, gel-forming composition

Annotation:

During the operation of wells there occurs an increase of water due to the breakthrough of bottom waters (formation of a water cone), in-situ cross-flow or a breakthrough of waters injected by the reservoir pressure maintenance system. This problems successful solution requires development of waterproofing works (WPW). In turn, waterproofing works require cost-effective and efficient technologies. In oil producing companies, work was carried out on the selection and testing of various water-proof compositions based on hypan, aluminum chloride, oil-bitumen products, sodium silicate and emulsion compositions. WPW technologies using emulsion compositions (SNPKh-9633, GER, etc.) have a number of disadvantages: high cost of the technology implementation, low resistance to pressure drops. This article presents the results of testing the WPW technology based on reagents of domestic large-scale chemical production.

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