公开(公告)号：US3568771A

公开(公告)日：1971-03-09

申请号：US3568771D

申请日：1969-04-17

Applicant: BORG WARNER ,  PAN AMERICAN PETROLEUM CORP ,  RENIC P VINCENT ,  ELDON L DRAKE

Inventor： VINCENT RENIC P ,  DRAKE ELDON L

IPC: E21B43/12 ,  F04D13/10 ,  F04D15/00 ,  F04D31/00 ,  E21B43/00 ,  E21B47/06 ,  F04D27/00

CPC classification number: F04D31/00 ,  E21B43/128 ,  F04D13/10 ,  F04D15/0066

Abstract: Many oil wells, especially in their latter stage of primary or secondary recovery, produce foamy crude oil. This crude oil will vary from mostly liquid to mostly foam. Pumping such a fluid is rather difficult. The main difficulty is due to reduced bulk density of the fluids. Thus, a constant r.p.m. submersible centrifugal pump has very low efficiency. This invention controls the r.p.m. as a function of the bulk density of the crude in the well bore. Various means of obtaining this are given.

公开(公告)号：US3502919A

公开(公告)日：1970-03-24

申请号：US3502919D

申请日：1969-01-02

Applicant: BORG WARNER

Inventor： BOYD CLINTON A ,  BEAVERS JOHN A ,  DRAKE ELDON L

IPC: F04D13/08 ,  H05K13/04 ,  H02K5/10 ,  H02K5/12

CPC classification number: H05K13/0417 ,  F04D13/083