Claims
- 1. A method of producing a well comprising the steps of:
a) positioning well fluid production tubing within a well borehole in flow communication with a well production zone; b) cementing said production tubing within said well borehole above said well production zone; c) purging substantially all cement from an internal bore of said production tube by fluid displacement; and d) opening the internal bore of said production tube to fluid flow from said production zone by fluid displacement within said internal bore.
- 2. A method of completing a well comprising the steps of:
a) assembling a well fluid production string comprising a pressure activated cementing valve, an external casing packer, a pressure activated production valve and a plug seal operatively combined with production tubing, said plug seal being positioned between said production valve and a point of well fluid entry into said production tubing; b) positioning said point of well fluid entry within said well at a desired well fluid production location; c) delivering a pump-down plug into said plug seal; d) increasing fluid pressure within said production tubing to inflate said external casing packer; e) increasing fluid pressure within said production tubing to open said pressure activated cementing valve; f) pumping a desired quantity of borehole cement down said tubing and through said open cementing valve; g) delivering a closing pump-down plug against said pressure activated cementing valve to close said cementing valve; h) increasing fluid pressure within said production tubing to open said production valve; i) displacing said closing pump-down plug from obstructing a flowpath through said production valve; and j) producing well fluid through said production tube.
- 3. A method of completing a well as described in claim 2 wherein said production string assembly further comprises a production packer positioned up-hole from said cementing valve.
- 4. A well completion tool comprising the combination of:
a) a cementing valve having a cement flow channel from an internal pipe bore into a surrounding well annulus, said flow channel being opened by a fluid pressure displaced first sleeve element and closed by a fluid pressure displaced second sleeve element; b) a fluid pressure engaged well annulus barrier surrounding said pipe bore and displaced along said pipe bore from said cementing valve; c) a production valve positioned along said pipe bore from said annulus barrier in a direction opposite from said cementing vavle, said production valve having a rupture opened flow channel from said surrounding well annulus into said pipe bore; and d) a pipe bore a plug seat positioned along said pipe bore from said production valve in a direction opposite from said annulus barrier.
- 5. A well completion tool as described in claim 4 wherein said cementing valve, well annulus barrier, production valve and plug seal are serially aligned toward the well bottom.
- 6. A well completion tool as described in claim 4 wherein said combination further comprises a production packer positioned along said pipe bore from said cementing valve in a direction opposite from said annular barrier.
- 7. A well completion tool as described by claim 4 wherein said cementing valve further comprises a closure plug seat positioned in said pipe bore along a direction from said cement flow channel opposite of said well annulus barrier.
- 8. A well production string comprising a production tube having an internal flow bore, said production tube suspending the operative assembly of:
a) a cementing valve having a cement flow channel from an internal flow bore into a surrounding well annulus, said flow channel being, opened by a fluid pressure displaced first sleeve element and closed by a fluid pressure displace second sleeve element; b) a fluid pressure expanded well annulus barrier surrounding said production tube and displaced along said production tube from said cementing valve; c) a production valve positioned along said production tube from said annulus barrier in a direction opposite from said cementing valve, said production valve having a rupture opened flow channel from said surrounding well annulus into internal flow bore; and d) a pipe bore plug seat positioned along said pipe bore from said production valve in a direction opposite from said annulus barrier.
- 9. A well production string as described in claim 8 further comprising a production packer positioned along said flow bore from said cementing valve in a direction opposite from said annulus barrier.
- 10. A well production string as described in claim 8 further comprising a well fluid production screen operatively positioned along said flow bore from said plug seat in a direction opposite from said production valve.
- 11. A well production string as described by claims 8 wherein said production tube further comprises a closure plug seat positioned in said internal flow bore from said cement flow in a direction opposite from said annulus barrier.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] The present application is a Continuation-In-Part of U.S. Utility patent application Ser. No. 09/539,004, filed Mar. 30, 2000.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09539004 |
Mar 2000 |
US |
Child |
10126397 |
Apr 2002 |
US |