Well casing assembly with erosion protection for inner screen

Details Well casing assembly with erosion protection for inner screen Well casing assembly with erosion protection for inner screen

1997-09-05

1999-03-16

Tsay, Frank

Wells

Screens

Spiral

166236, E21B 4308

Patent

active

058818090

ABSTRACT:
Well casing assembly for use in oil and gas wells, and especially deviated or horizontal wells, has an inner pipe member with threaded ends which permit a number of casing assemblies to be joined in a string. The inner pipe has a series of perforations along a segment of its length which are covered by an elongated screen member which prevents the passage of sand particles. A concentric outer protective cover member is devoid of perforations in regions which are radially opposite the inner screen to prevent damage to the screen. One or more perforated segments of the outer member are axially spaced from the screen member so that inward flow from a formation will have its energy and velocity reduced before it reaches the screen, thereby minimizing erosion of the screen surface. If desired, perforated flow control devices such as annular rings can be located between the inner pipe and outer member at the ends of the screen segment to allow a more uniform flow to the screen, and thus further reduce erosion.

REFERENCES:
patent: 635290 (1899-10-01), Black
patent: 1211415 (1917-01-01), Cross
patent: 1604386 (1926-10-01), Byerly
patent: 2429043 (1947-10-01), Barnhart
patent: 3369665 (1968-02-01), Paulson
patent: 4064938 (1977-12-01), Fast
patent: 4067812 (1978-01-01), Drori
patent: 4440218 (1984-04-01), Farley
patent: 4476925 (1984-10-01), Cox
patent: 4858691 (1989-08-01), Ilfrey et al.
patent: 5150753 (1992-09-01), Gaidry et al.
patent: 5551513 (1996-09-01), Surles et al.
patent: 5624560 (1997-04-01), Voll et al.

Affiliated with

Also associated with

Rating

Well casing assembly with erosion protection for inner screen 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 casing assembly with erosion protection for inner screen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Well casing assembly with erosion protection for inner screen will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-809589