CN2387263Y - Expansion sand-proof screening tube - Google Patents
Expansion sand-proof screening tube Download PDFInfo
- Publication number
- CN2387263Y CN2387263Y CN 99242248 CN99242248U CN2387263Y CN 2387263 Y CN2387263 Y CN 2387263Y CN 99242248 CN99242248 CN 99242248 CN 99242248 U CN99242248 U CN 99242248U CN 2387263 Y CN2387263 Y CN 2387263Y
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- CN
- China
- Prior art keywords
- tube
- utility
- model
- sand
- outer tube
- 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
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to an expansion sand preventing sieve tube used under an oil well of an oil field. The utility model is composed of a parent tube, sand preventing media and an outer tube. The utility model is characterized in that four metal stainless steel fibre sand preventing media are arranged between the parent tube and the outer tube, and the parent tube and the outer tube are kerf steel pipes. The sand preventing tube can be lengthways expanded; when the utility model is used, the sieve tube can be appressed with the wall of the oil well by an expending cone so as to play the sand preventing function, and the sand preventing tube can be lifted in a lengthways shrinkage mode when the sand preventing tube is put away. Because the utility model has no damage among each eyelet thimble when used, the penetrability of an oil-water well can be enhanced, and the effect of sand prevention can be improved. When the utility model is used, because the wall of the oil well is lengthways supported by the utility model, the utility model has definite repairing function for a well of which the sleeve tube is damaged. The utility model has the advantages of simple construction, low cost, and convenient operation and can be widely used for preventing sand in the oil well.
Description
A kind of expanding sand control screen that is used for down-hole, oil field sand control belongs to oil field downhole tool class.
In oil extraction process, can often run into the phenomenon of shaking out in the well, cause the reason of shaking out in the well a lot, wherein to be that subterranean strata is loose cause main cause, loose sandstone can bring grievous injury to oil well, when can't recover the oil very of oil well when serious of shaking out, therefore, adopt in multiple sand control measure and the various sand preventing tool lower going-into-well, the shutoff oil-well wall makes its unlikely slump, anti-sandpipe commonly used in the existing technology, carry out shutoff, wherein mainly comprise: cutting seam sieve tube, wire-wrapped screen, metal wool screen casing TBS screen casing, multiclass pipes such as casting particle screen casing, but because these screen casing appearance and sizes are changeless, have only the 10--20 mm clearance between the screen casing and the borehole wall, like this with the sand grains in the landing surface in the accumulation between the annular space between the well screen and the borehole wall, screen casing can occur is embedded in the down-hole and causes difficulty to salvaging, reduced permeability because the accumulation of the reservoir sand between the annular space forms the sand ring simultaneously, strengthened the stratum liquid flowing resistance, thereby limited oil well output.A kind ofly can prevent in the down-hole layer of sand position radial dilatation being adjacent to the borehole wall, can eliminate between the annular space again and pile up, improve and salvage effect, the expanding sand control screen that improves the oil well permeability simultaneously and increase oil well output is not reported through consulting Chinese patent.
The utility model purpose is a kind of expanding sand control screen that provides in order to overcome above-mentioned shortcoming.
The utility model is to realize like this.
The utility model is by parent tube, and outer tube is formed one deck sand control medium between two-layer tube wall, this medium can play the sand control effect, at first on screen casing, connect hanger during use, when screen insertion is prevented the layer of sand position to the down-hole, make hanger packing chucking, behind the stratum, thereafter by expanding the awl screen casing under the tubing string action of gravity, the beginning radial dilatation is adjacent to the borehole wall thereby screen casing is reached, eliminated and well between the gap, can play preventing the sand wash effect like this, salvage screen casing if desired, only need to put forward this screen casing energy radial contraction of screen casing, can make between screen casing and the well again and produce the gap, just can carry out fishing.
The utility model advantage is: thus owing to do not exist the sand ring influence in annular cover space to improve the oil-water well penetrating power between this screen construction and the borehole wall, improved sand controlling result; And owing to its radial support to the borehole wall, for the broken well of hindering of sleeve pipe, can play certain repair, this screen casing also is applicable to barefoot completion, because this screen sand control construction operation is simple, but the low also expanded radially of cost increases the well internal diameter, be convenient to the oil well operation, therefore also be suitable for the slim hole completion sand control; As in screen casing later stage salvaging process, screen casing can radial contraction can make salvaging easier, also can reduce the chance of heavy repair task in addition.Thereby can be widely used in the sand control operation.
The utility model is provided by following examples.
Below in conjunction with accompanying drawing the utility model is done further narration:
Accompanying drawing 1 the utility model structural representation
2 the utility model generalized sections
3 the utility model process of expansion schematic diagrames
A kind of expanding sand control screen that is used for down-hole, oil field sand control is made up of parent tube 1 and the outer tube 3 that is enclosed within the parent tube outside, it is characterized in that being coated with between parent tube and the outer tube sand control medium 2 described parent tubes 1 and be the Expandable cutting seam sieve tube, its slot (5) specification is length 100 millimeters long, 5 millimeters of width
The two ends of parent tube have connecting thread; Described sand control medium 2 is by metal stainless steel fibre felt sand control medium, material is manufactured and is formed, can play the described outer tube 3 of sand control effect is Expandable slot sieve thin-wall steel tubes that a thickness is 3--4m/m, this tubing matter is that slot is arranged above the steel pipe, can play the effect of protection sand control medium, outer tube and sand control medium 2 overlap mutually, and are fixed on simultaneously by solder joint 4 and outer tube 3, can prevent that like this screen casing from causing the moving sand that leaks of string because of the circumferencial direction discontinuity when expansion; Outer tube 3 welds together with parent tube 1 two ends, when screen casing is expanded, but outer tube 3 and 1 while of parent tube radial dilatation.
(Fig. 3) will expand screen casing 7 earlier and be fixed in the position of giving design earlier by a hanger 6 that is fixed on above the oil well during construction, then by being attached to the bloated awl 8 below the oil pipe tubing string 5, under tubing string 5 actions of gravity, strut expansion screen casing 7, be adjacent to borehole wall purpose thereby reach the expansion screen casing; Bloated awl is to have certain taper, manufactures a cone that forms with carbon steel.
Claims (2)
1, a kind of expanding sand control screen that is used for down-hole, oil field sand control; Form by parent tube (1) and the outer tube (3) that is enclosed within parent tube outside, it is characterized in that between described parent tube and the outer tube by four metal stainless steel fibre felt sand control media (2).
2, expanding sand control screen according to claim 1, it is characterized in that having above the parent tube slot two ends and have connecting thread, outer tube (3) is thick to be the steel cutting seam sieve tube of 3--4 millimeter, and sand control medium (2) overlaps mutually with outer tube, and by solder joint (4) and outer tube, parent tube weldering knot together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99242248 CN2387263Y (en) | 1999-09-07 | 1999-09-07 | Expansion sand-proof screening tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99242248 CN2387263Y (en) | 1999-09-07 | 1999-09-07 | Expansion sand-proof screening tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2387263Y true CN2387263Y (en) | 2000-07-12 |
Family
ID=34028946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99242248 Expired - Fee Related CN2387263Y (en) | 1999-09-07 | 1999-09-07 | Expansion sand-proof screening tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2387263Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265222A (en) * | 2014-09-17 | 2015-01-07 | 中国石油天然气股份有限公司 | Hydraulic expansion cone capable of realizing self-constriction |
| WO2015176369A1 (en) * | 2014-05-23 | 2015-11-26 | Tianjin Top Cloud East Energy Technology Co., Ltd. | Expandable sand screen |
| CN107288586A (en) * | 2017-07-26 | 2017-10-24 | 左青山 | A kind of telescopic type sand control screen and method |
| CN110295868A (en) * | 2019-07-16 | 2019-10-01 | 邓福成 | Combined expanded screen casing |
-
1999
- 1999-09-07 CN CN 99242248 patent/CN2387263Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015176369A1 (en) * | 2014-05-23 | 2015-11-26 | Tianjin Top Cloud East Energy Technology Co., Ltd. | Expandable sand screen |
| CN104265222A (en) * | 2014-09-17 | 2015-01-07 | 中国石油天然气股份有限公司 | Hydraulic expansion cone capable of realizing self-constriction |
| CN107288586A (en) * | 2017-07-26 | 2017-10-24 | 左青山 | A kind of telescopic type sand control screen and method |
| CN107288586B (en) * | 2017-07-26 | 2023-07-07 | 胜利油田康贝石油工程装备有限公司 | Retractable sand control screen pipe and method |
| CN110295868A (en) * | 2019-07-16 | 2019-10-01 | 邓福成 | Combined expanded screen casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |