Wells – Valves – closures or changeable restrictors – Longitudinally movable operator
Reexamination Certificate
2007-08-28
2007-08-28
Neuder, William P (Department: 3672)
Wells
Valves, closures or changeable restrictors
Longitudinally movable operator
C166S334200
Reexamination Certificate
active
11416269
ABSTRACT:
A well testing system and well testing method is described which can be operated as a closed system with no production of hydrocarbons outside the well or gas can be separated and flared at surface giving minimal environmental impact with the liquid hydrocarbon being re-injected. This is achieved by providing a string with at least two well conduits which may be arranged in a concentric or non-concentric parallel configuration. One conduit is used to produce formation fluids to surface or to produce/store unrepresentative initial flow products and the other conduit is used to store formation fluid. The storage conduit can be filled from the top (surface) or the bottom of the well. In a preferred arrangement a valve is provided between the storage conduit and the well annulus for well pressure control, and a shut-in or test valve, which is controllable from surface, is disposed in the non-storage production conduit. A flow control valve is provided at the lower end of the string or at surface and the size of the valve opening is controllable to allow formation fluid to enter the storage string at a controlled rate, so that the formation fluid flowing time is increased to maximize the radius of investigation into the formation to a similar order of magnitude of existing production tests and extended well tests, which are typically two to three times the order of magnitude of the radius of investigation of a wireline formation test. Other aspects and embodiments of the invention are described.
REFERENCES:
patent: 5638904 (1997-06-01), Misselbrook et al.
patent: 6289911 (2001-09-01), Majkovic
patent: 2004/0244981 (2004-12-01), Vermeeren
patent: WO 0058604 (2000-10-01), None
patent: WO 0065199 (2000-11-01), None
Edwards Jeffrey C.
Richards Andrew
Gifford Krass Sprinkle Anderson & Citkowski
Neuder William P
LandOfFree
Well testing system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Well testing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Well testing system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3897309