CN208845153U - A kind of gravel pack completion system - Google Patents
A kind of gravel pack completion system Download PDFInfo
- Publication number
- CN208845153U CN208845153U CN201821018189.7U CN201821018189U CN208845153U CN 208845153 U CN208845153 U CN 208845153U CN 201821018189 U CN201821018189 U CN 201821018189U CN 208845153 U CN208845153 U CN 208845153U
- Authority
- CN
- China
- Prior art keywords
- gravel pack
- base tube
- expansion element
- flushing pipe
- completion system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a kind of gravel pack completion systems, including pit shaft, packer, tubing string, sand-screen, base tube, float shoe and flushing pipe, it is provided with gravel pack hole on base tube, is also equipped with gravel pack hole in the bottom of flushing pipe, is combined with expansion element on the inner periphery of base tube.The utility model has the advantages that being attached with expansion element on the inner periphery of base tube, before reaching the scheduled time in pit shaft or scheduled condition occur, expansion element will not expand or only expand small quantity, to provide convenience for gravel pack service, the activity duration is significantly shortened, cost has been saved.
Description
Technical field
The utility model relates to completion and sand control technical fields, more particularly to a kind of gravel pack completion system.
Background technique
Shaking out serious stratum for loose cementation that is, first will be under wire-wrapped screen generally using gravel pack completion mode
Enter well oil layer position, then with packing fluid the gravel chosen in advance on the ground be pumped to wire-wrapped screen and wellbore or around
In annular space between silk sieve tube and casing, a gravel-pack is constituted, to stop oil reservoir sand flow to enter pit shaft, reaches protection
The purpose of the borehole wall, sand control.Currently, using include packer, sand-screen and flushing pipe gravel pack completion system into
During row gravel packing operations, to prevent gravel slurry from entering by gravel pack hole the inside of screen casing, under needing in addition
Enter packer or plug into base tube, seal the part of base tube or more, it is long to thereby result in the activity duration, and construction cost is high.
Summary of the invention
The purpose of the utility model is to provide a kind of gravel pack completion systems, attached on the inner periphery of base tube within the system
Have expansion element, before reaching the scheduled time in pit shaft or scheduled condition occur, expansion element will not expand or only
Small quantity is expanded, to provide convenience for gravel pack service, the activity duration is significantly shortened, has saved cost, gram
The deficiencies in the prior art are taken.
What the utility model was achieved through the following technical solutions to solve above-mentioned technical problem: a kind of gravel pack completion system
It unites, including pit shaft, packer, tubing string, sand-screen, base tube, float shoe and flushing pipe, is provided with gravel pack hole on base tube,
The bottom of flushing pipe is also equipped with gravel pack hole, is combined with expansion element on the inner periphery of base tube.The expansion element is
Oil is met, water is met or meets the elastomer of oil water mixture expansion；When the expansion element is in original state, in the inside of base tube
Channel is maintained, the tool of fluid or suitable dimension is allowed to pass through；The expansion element can radially-inwardly be expanded full of base
Space between pipe and flushing pipe；The expansion element can radially-inwardly expand the inner space full of base tube.
The utility model has the advantages that be attached with expansion element on the inner periphery of base tube, when reaching the scheduled time in pit shaft
Or before there is scheduled condition, expansion element will not expand or only expand small quantity, to mention for gravel pack service
Convenience has been supplied, the activity duration is significantly shortened, has saved cost.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Fig. 2 is to carry out gravel packing operations process schematic using the utility model.
Fig. 3 is that gravel filling finishes the schematic diagram for sufficiently expanding expansion element after flushing pipe out pit shaft and preparing operation.
Fig. 4 is incorporated in the expansion element original state schematic diagram on base tube inner periphery.
Fig. 5 is incorporated in the schematic diagram that substrate tube space is full of after the expansion element on base tube inner periphery sufficiently expands.
In figure: 1 pit shaft, 2 packers, 3 tubing strings, 4 sand-screens, 5 base tubes, 6 float shoes, 7 flushing pipes, 8 annular spaces, 9 gravels
Pack hole, 10 gravel pack holes, 11 expansion elements, 12 channels
Specific embodiment
1-5 is further described the utility model with reference to the accompanying drawings of the specification.
A kind of gravel pack completion system, including pit shaft 1, packer 2, tubing string 3, sand-screen 4, base tube 5, float shoe 6
With flushing pipe 7, gravel pack hole 9 is provided on base tube, the bottom of flushing pipe 7 is also equipped with gravel pack hole 10, base tube 5
Expansion element 11 is bonded on inner periphery.The expansion element 11 is to meet oil, meet water or meet the elasticity of oil water mixture expansion
Body；When the expansion element 11 is in original state, channel 12 is maintained in the inside of base tube 5, allows fluid or suitable
The tool of size passes through；The expansion element 11 can radially-inwardly be expanded full of the space between base tube 5 and flushing pipe 7；Institute
The expansion element 11 stated can radially-inwardly expand the inner space full of base tube 5.
When construction, set packer 2, before expansion element 11 is unexpanded, by under flushing pipe 7 into sand-screen 4 simultaneously
By channel 12 until the gravel pack hole 10 on 7 bottom of flushing pipe is adjacent with the gravel pack hole 9 on base tube 5, then expand
Element 11 expands, and the upper down space between flushing pipe 7 and base tube 5 is kept apart.
Gravel slurry is pumped into out of flushing pipe 7, gravel slurry reaches the gravel pack hole of bottom along 7 downlink of flushing pipe
10, due to the sealing of expansion element 11, gravel slurry is entered between base tube 5 and pit shaft 1 by the gravel pack hole 9 on base tube 5
Annular space 8, and uplink reach sand-screen 4 at, carry liquid enter the annular space between sand-screen 4 and flushing pipe 7 and on
Row is migrated to ground, and gravel buildup is in 8 region of annular space around sand-screen 4.
After gravel fills, act flushing pipe 7, expansion element 11 sufficiently expands, so that closed channel 12, prepares to throw
It produces.
Claims (5)
1. a kind of gravel pack completion system, including pit shaft, packer, tubing string, sand-screen, base tube, float shoe and flushing pipe,
Gravel pack hole is provided on base tube, the bottom of flushing pipe is also equipped with gravel pack hole, is combined on the inner periphery of base tube swollen
Swollen element.
2. gravel pack completion system as described in claim 1, it is characterised in that: the expansion element is to meet oil, meet water
Or meet the elastomer of oil water mixture expansion.
3. gravel pack completion system as described in claim 1, it is characterised in that: the expansion element is in original state
When, channel is maintained in the inside of base tube, the tool of fluid or suitable dimension is allowed to pass through.
4. gravel pack completion system as described in claim 1, it is characterised in that: the expansion element can be radially-inwardly swollen
The swollen space full of between base tube and flushing pipe.
5. gravel pack completion system as described in claim 1, it is characterised in that: the expansion element can be radially-inwardly swollen
The swollen inner space full of base tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821018189.7U CN208845153U (en) | 2018-06-29 | 2018-06-29 | A kind of gravel pack completion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821018189.7U CN208845153U (en) | 2018-06-29 | 2018-06-29 | A kind of gravel pack completion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208845153U true CN208845153U (en) | 2019-05-10 |
Family
ID=66352653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821018189.7U Expired - Fee Related CN208845153U (en) | 2018-06-29 | 2018-06-29 | A kind of gravel pack completion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208845153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109315A (en) * | 2021-12-02 | 2022-03-01 | 中国地质大学（武汉） | Oil exploitation method for improving injection and exploitation capacity of reservoir |
-
2018
- 2018-06-29 CN CN201821018189.7U patent/CN208845153U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109315A (en) * | 2021-12-02 | 2022-03-01 | 中国地质大学（武汉） | Oil exploitation method for improving injection and exploitation capacity of reservoir |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190510 Termination date: 20210629 |