NO954750L - Double wall insulated pipe and method of installing it - Google Patents
Double wall insulated pipe and method of installing itInfo
- Publication number
- NO954750L NO954750L NO954750A NO954750A NO954750L NO 954750 L NO954750 L NO 954750L NO 954750 A NO954750 A NO 954750A NO 954750 A NO954750 A NO 954750A NO 954750 L NO954750 L NO 954750L
- Authority
- NO
- Norway
- Prior art keywords
- string
- strings
- pipe
- pipe string
- tube
- Prior art date
Links
Landscapes
- Earth Drilling (AREA)
- Thermal Insulation (AREA)
Abstract
En dobbeltveggisolert rørstreng (46) som er tilpasset til å henge fra et brønnhode (58), har en indre rørstreng (21) laget av flere indre produksjonsrør og en radialt ytre rørstreng (22) laget av flere ytre produksjonsrør. Strengene er uavhengige av hverandre bortsett fra at strengene må festes relativt til hverandre aksialt øverst på rørstrengen, selv om de også kan festes aksialt nederst på rørstrengene hvis ønskelig. En ringisoleringssprekk (30) mellom rørstrengene (21, 22) er hermetisk lukket på begge de motsatte endene og kan evakueres. De indre og ytre rørstrengene kan kjøres inn i en brønn ved hjelp av konvensjonell oljeboringsteknologi, og det finnes ingen mekanisk forbindelse mellom de indre og ytre rørstrengene (21, 22), spesielt i koplingene til de respektive indre og ytre produksjonsrørlengdene. For å påse at innsiden av den ytre rørstrengen (22) ikke inneholder formasjonsvæsker før den indre rørstrengen (21) kjøres inn i brønnen og lukkes mot den ytre strengen i nederste ende, lukker først en midlertidig plugg (31) den nedre enden av den ytre strengen og deaktiveres før væsken kan strømme gjennom den vanmeisolerte doble rørstrengen(46).A double-wall insulated pipe string (46) adapted to hang from a wellhead (58) has an inner pipe string (21) made of several inner production tubes and a radially outer pipe string (22) made of several outer production tubes. The strings are independent of each other except that the strings must be fixed axially relative to each other at the top of the pipe string, although they can also be fixed axially at the bottom of the pipe strings if desired. A ring insulation crack (30) between the tubing strings (21, 22) is hermetically sealed on both opposite ends and can be evacuated. The inner and outer tubing strings can be run into a well by conventional oil drilling technology, and there is no mechanical connection between the inner and outer tubing strings (21, 22), especially in the couplings of the respective inner and outer production tubing lengths. To ensure that the inside of the outer tube string (22) does not contain formation fluids before the inner tube string (21) is inserted into the well and closed against the outer strand at the lower end, first a temporary plug (31) closes the lower end of the outer tube. the string and deactivated before the liquid can flow through the heat insulated double tube string (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO954750A NO954750L (en) | 1995-11-23 | 1995-11-23 | Double wall insulated pipe and method of installing it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO954750A NO954750L (en) | 1995-11-23 | 1995-11-23 | Double wall insulated pipe and method of installing it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO954750D0 NO954750D0 (en) | 1995-11-23 |
| NO954750L true NO954750L (en) | 1997-05-26 |
Family
ID=19898787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO954750A NO954750L (en) | 1995-11-23 | 1995-11-23 | Double wall insulated pipe and method of installing it |
Country Status (1)
| Country | Link |
|---|---|
| NO (1) | NO954750L (en) |
-
1995
- 1995-11-23 NO NO954750A patent/NO954750L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO954750D0 (en) | 1995-11-23 |
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