Center section for oil well perforation testing device

Details Center section for oil well perforation testing device Center section for oil well perforation testing device

1978-04-28

1979-07-31

Leppink, James A.

Wells

Packers or plugs

With central conduit and fluid port to space outside

166242, 285133R, E21B 33122

Patent

active

041627059

ABSTRACT:
A pair of elongated inner and outer tubular members are provided with pairs of corresponding loosely telescoped opposite end portions defining annular passages therebetween. The midportions of the tubular members are secured relative to each other and include port structure communicating the interior of the central portion of the inner tubular member with the exterior of the central portion of the outer tubular member. In addition, the inner and outer tubular members include coacting structure, in the areas of the midportions thereof, communicating the aforementioned annular passages with each other independent of the exterior of the outer tubular member, the interior of the inner tubular member and the port structure communicating the interior of the midportion of the inner member with the exterior of the midportion of the outer member.

REFERENCES:
patent: 2297020 (1942-09-01), Page
patent: 3865188 (1975-02-01), Doggett et al.

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