METHOD OF RECOVERY OF WELL PRODUCTS AND DEEP-WELL PUMPING DEVICES FOR METHOD EMBODIMENT (VERSIONS) Russian patent published in 2002 - IPC

FIELD: oil producing industry; applicable in other branches of national economy, for instance, in production of potable water. SUBSTANCE: used in method are unified deep-well double- and single-acting pumping devices adaptable for pumping out of well products possessing various physical properties and chemical compositions. Application of deep-well pumping devices with two-chamber intake or intake and preparation pressure chamber makes it possible to pump out simultaneously, both, gas-fluid mixture and degassed fluid, or oil and water separately, or products from two oil-bearing formations possessing various chemical compositions and physical properties. Used are pump various working cavities located below and above member separating zones of lifting and accumulation of oil and water, or packer separating two oil-bearing formations from each other. In this case, deep-well pumping devices with double-cavity deep well are used for operation, mainly, of large producers with high optimal bottom pressure. Single-cavity deep well is used in marginal and medium producers with products of various viscosities. Said deep-well pumping devices with deep-well pumps may also be completed, correspondingly, with pressure chamber of preparation and intake, and injector for suction of gas, and gas separator of immersion type with circular groove for suction of liberated gas by ejector installed at deep-well pump discharge end. EFFECT: extended functional potentialities and fields of application of deep-well pumping devices under various geological conditions of deposit development, and various physical properties and chemical compositions of recovered well products. 8 cl, 6 dwg