Mating unit enabling the deployment of a modular electrically driven device in a well

Abstract

An electric pump assembly is provided in a well, the pump comprising an electric motor module having a first outer housing and a first mating means, an electric pump module having a pump inlet and a pump outlet, and a second outer housing and a second mating means. In one aspect, the electric motor module and electric pump module are capable of being reversibly joined together by the first and second mating means, as the electric motor module includes a first rotating member that is capable of rotating relative to the first outer housing, and the electric pump module includes a second rotating member that is capable of rotating relative to the second outer housing. In this way, the first rotating member and second rotating member can transfer torque when the electric motor module and electric pump module are joined. In another aspect, a flowpath is provided in each module, the flowpaths fluidly communicating when the modules are joined.

1 . An electric pump assembly in a well, comprising an electric motor module having an first outer housing and a first mating means,
 an electric pump module having a pump inlet and a pump outlet, a second outer housing and a second mating means,   the electric motor module and electric pump module capable of being reversibly joined together by the first and second mating means,   the electric motor module includes a first rotating member that is capable of rotating relative to the first outer housing, and the electric pump module includes a second rotating member that is capable of rotating relative to the second outer housing, such that the first rotating member and second rotating member can transfer torque when the electric motor module and electric pump module are joined.   
     
     
         2 . An assembly according to any previous claim wherein the electric motor module is deployed on an electric cable. 
     
     
         3 . An assembly according to  claim 2 , wherein a conductive member or members of the electric cable carries both the weight of itself and the weight of the electric motor module. 
     
     
         4 . An assembly according to  claim 2 , wherein the first rotating member and second rotating member are joined by interlocking splines. 
     
     
         5 . An assembly according to  claim 1 , comprising two or more pump modules, and/or two or more electric motor modules. 
     
     
         6 . An assembly according to  claim 1 , comprising a tube expansion module that may be releasably attached to and driven by the motor module. 
     
     
         7 . An electric motor module according to  claim 1 . 
     
     
         8 . A pump module according to  claim 1 . 
     
     
         9 . An tube expansion module according to  claim 6 . 
     
     
         10 . An electric pump assembly in a well, comprising an electric motor module having an first outer housing and a first mating means,
 an electric pump module having a pump inlet and a pump outlet, a second outer housing and a second mating means,   the electric motor module and electric pump module capable of being reversibly joined together by the first and second mating means,   the electric motor module including a first flowpath inside the first outer housing, the electric motor module including a second flowpath inside the second outer housing, such that the first and second flowpaths are brought into fluid communication when the electric motor module and electric pump module are joined.   
     
     
         11 . An assembly according to  claim 10 , wherein the electric motor module includes a first rotating member that is capable of rotating relative to the first outer housing, and the electric pump module includes a second rotating member that is capable of rotating relative to the second outer housing, such that the first rotating member and second rotating member can transfer torque when the electric motor module and electric pump module are joined. 
     
     
         12 . An assembly according to  claim 10  wherein electric power is supplied via a supply means situated on a well casing. 
     
     
         13 . An assembly according to  claim 12 , wherein the first rotating member and second rotating member are joined by means of interlocking splines. 
     
     
         14 . An assembly according to  claim 10 , comprising two or more pump modules, and/or two or more electric motor modules. 
     
     
         15 . An electric motor module according to  claim 10 . 
     
     
         16 . A pump module according to  claim 10 .