DEVICE FOR OPERATION OF WELL BY IMMERSED PUMP WITH SHANK Russian patent published in 1998 - IPC

FIELD: oil and gas production industry. SUBSTANCE: this relates to recovery of liquids and gaseous media from wells and can be used in operation of oil wells. Device has string of pump-compressor pipes and support integrated in this string. Shank of immersed pump is provided with filter and is made in the form of supporting string of pipe. Length of pipes is equal to distance from pump inlet to rock material lying in sump of well. Cross-section over metal of pipe increases with depth according to law expressed in the form of formula. In this case, shank is made so that it can be loaded by weight of string of pump-compressor pipes until reaching pressure of rock material in sump of well being equal to 1.2-2 values of bed pressure. Application of aforesaid device ensures increase of productive capacity of wells and oil recovery from bed due to changing field of stresses in rock mass which surrounds well at radius of up to 2.5 km. EFFECT: higher efficiency. 1 dwg