Downhole pump installation/removal system and method

  • US 6,050,340 A
  • Filed: 03/27/1998
  • Issued: 04/18/2000
  • Est. Priority Date: 03/27/1998
  • Status: Expired due to Term
First Claim
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1. An assembly for use in a wellbore having an outer tubular and an inner tubular therein such that an annulus is formed therebetween, said wellbore having a pump therein for pumping a well fluid out of a reservoir portion of said wellbore, said assembly comprising:

  • first and second members being securable to said inner tubular member and being mountable within said outer tubular member, said first and second members being relatively moveable with respect to each other between a first position and a second position, said first and second members defining therein a first flow path to permit said well fluid to flow from said reservoir portion of said wellbore;

    a valve being secured to at least one of said first and second members, said valve having an open and a closed position, said valve controlling flow of said well fluid through said first flow path from said reservoir portion and, when said valve is in said open position, to said pump, said valve experiencing a differential pressure when in said closed position with a higher pressure on one side of said valve than on an opposite side of said valve, anda seal being positioned between said first and second members to seal off communication between said first flow path and said higher pressure when said first and second members are in said first position and when said valve is in said closed position, said first and second members being fashioned such that a second flow path is formed to allow communication between said first flow path and said higher pressure when said first and second members are in said second position.

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