| 摘要 |
<p>The invention relates to a system for extracting the fluids accumulated in a well by pumping, said well being in communication with a productive layer. According to the invention, the system comprises a centrifugal pump (P) placed in a production casing column (10) by means of a rod string (12), in front of a productive layer (Z), driven by means of a line of sucker rods (13) by means of a drive head (14), the pump (P) having a plurality of centrifugal staged elements (16) mounted on a central shaft (18) which is connected to an output shaft of a transmission (T) which increases the speed of the fluid and which has an input shaft (20) connected with the line of sucker rod (13), a portion of the last one being surrounded by a rigid casing (24) confining a tubular housing (23) wherein the fluid pushed by the pump (P) forcedly enters, the housing (23) being sealed by some packings (29F and 29A), and in order to control the differential pressure, there is provided a pressure compensator (36), for the passage of the fluid through the transmission (T) there being mounted a conduit (32) which passes through the packings (29F and 29A).</p> |
