Wells – Processes – Producing the well
Patent
1992-08-27
1993-11-02
Suchfield, George A.
Wells
Processes
Producing the well
166 50, E21B 4300
Patent
active
052576655
ABSTRACT:
A method and system for recovering fluids from a hydrocarbon-bearing subsurface formation includes a first tubing string run into the well and a second tubing string run within the first tubing string. The annulus between the first and second tubing strings is sealed above a liquid level in the well and at least one fluid passageway is provided between the first and second tubing strings at a location between the liquid level and adjacent the annulus seal. The difference of the liquid head between the inside of the second tubing string opposite the at least one fluid passageway and the outside of the second tubing string (i.e. the first and second tubing string annulus) provides the casing annulus-to-tubing differential pressure that forces gas above the annulus fluid level to pass through the at least one fluid passageway and re-enter the fluid stream in the second tubing string. As less gas or more liquid is produced, the liquid level in the annulus rises and less pressure differential is available to force the gas through the at least one fluid passageway; therefore, less gas will flow into the second tubing string fluid. If more gas or less liquid is produced, the liquid level in the annulus will drop; thereby, creating more pressure differential and more gas will pass into the second tubing string. In this manner, a self regulating system is created that prevents liquid loading of the well.
REFERENCES:
patent: 2053981 (1936-09-01), Villers
patent: 3224267 (1965-12-01), Harlan et al.
patent: 3302721 (1967-02-01), Yetman
patent: 3735815 (1973-05-01), Myers
patent: 4708595 (1987-11-01), Maloney et al.
patent: 4878539 (1989-11-01), Anders
Camco International Inc.
Suchfield George A.
LandOfFree
Method and system for recovering liquids and gas through a well does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for recovering liquids and gas through a well, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for recovering liquids and gas through a well will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1752298