Downhole fluid disposal apparatus and methods
AssigneeDown Hole Injection, Inc.
InventorsClarence Michael, Bruce D. Kelvo
Life of this patent
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Abstract
A seal cartridge and barrel manifold seal are provided for use in a subterranean well and in a method to inject fluid, that is initially produced into the well from a subterranean formation or zone, into another subterranean formation or zone. The seal cartridge has two distinct annular seals positioned within opposite sides of a unitary housing to inhibit fluid flow through the housing in both axial directions along a rod that is positioned through the housing. A barrel seal manifold is provided that is unitary in design and has tapered flow surfaces thereby provided increased strength, flow dynamics and life.
Claims13
A downhole fluid disposal method comprising:
- producing fluid from a first subterranean formation into a well that penetrates and is in fluid communication with said first formation, said fluid separating in said well into a first fluid and a second fluid;
- pumping said second fluid against a flow barrier in said well by means of a pump having a moveable rod, said barrier inhibiting flow of said pumped second fluid axially along said rod at a point within said well thereby permitting said pumped second fluid to be injected into a second subterranean formation that said well penetrates and is in fluid communication with;
- and
- substantially surrounding said rod with fresh water having a scale inhibitor dissolved therein from said point to the surface of the earth, said fresh water inhibited by said barrier from flowing past said point axially along said rod.
A method of producing a subterranean well comprising:
- producing fluid from a first subterranean formation into the well thereby causing said fluid to separate into a gas and a liquid;
- flowing said gas to the surface of the earth;
- and
- moving a sucker rod string having one sucker rod actuated pump secured thereto and positioned in the well so as to pump said liquid into a second subterranean formation, said pump having a moveable rod which is secured to said sucker rod string and has a downhole stuffing box positioned around said rod to inhibit flow of said liquid axially along said rod at a point within said well thereby permitting said liquid to be pumped into a second subterranean formation.
Dependencies are inferred from the claim text.