CN109113683A - A kind of screen casing multilayer outer protection tube - Google Patents
A kind of screen casing multilayer outer protection tube Download PDFInfo
- Publication number
- CN109113683A CN109113683A CN201710496787.9A CN201710496787A CN109113683A CN 109113683 A CN109113683 A CN 109113683A CN 201710496787 A CN201710496787 A CN 201710496787A CN 109113683 A CN109113683 A CN 109113683A
- Authority
- CN
- China
- Prior art keywords
- tube
- outer sheath
- screen casing
- sheath tube
- screen
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/088—Wire screens
Abstract
The invention discloses a kind of screen casing multilayer outer protection tubes, equipped with center supervisor, outer sheath tube, strainer core pipe, center supervisor is the drilling screen casing type center supervisor (2) that tube body section drills sieve pore, connect 1-6 layers of strainer core pipe (4) in the drilling screen casing tube body outsourcing of center supervisor (2), packet connects outer sheath tube outside strainer core pipe (4), outer sheath tube and strainer core pipe (4) both ends are fixedly connected connection ring (3), and connection ring (2) is fixedly connected on the tube body of center supervisor (2).In use, as existing band filtering well screen, according to design requirement, both ends are assemblied on oil recovery well casing the present invention, can carry out oil-extraction sand-prevention filtration operation.
Description
Technical field
The invention belongs to oil transportation technical fields, are related to a kind of screen casing multilayer outer protection tube.
Background technique
With petroleum, the continuous development of natural gas extraction industry and advancing by leaps and bounds for science and technology, to oil exploration equipment
Technical requirements are also higher and higher.In petroleum, natural gas extraction, due to especially being produced to improve by oilbearing stratum environmental restrictions
The quality of crude oil usually installs the well screen with filtering additional in the setting position of oil recovery well casing.In well-known technique, existing band mistake
The well screen of filter be mainly use have tube body drill sieve pore drilling screen casing, tube body cut be formed with item stitch cutting seam sieve tube and
By being wound with the wire-wrapped screen etc. of trapezoid wind wire on support frame, since construction is limited, in the subterranean oil gas-bearing formation ring more containing fine sand
Under border, dustproof effect is poor；In this regard, there are also by the center base tube housing punching core pipe with sieve pore, then in punching core pipe in welding
The combined type screen casing multilayer outer protection tube of aperture outer sheath tube composition is covered outside filter layer, filter layer again, but is limited by its structure, structure
Make complicated, lower well operations are cumbersome, and the direct impact filtration layer of oil inlet easily causes filter opening deformation to influence filter effect especially in operation.
Summary of the invention
For overcome the deficiencies in the prior art, the well screen construction for solving existing band filtering is complicated, and filter layer is easily-deformable
The problem of influencing filter effect.A kind of simple and practical in structure it is an object of the present invention to provide, lower well operations are easy, oil inlet in operation
Filter effect is stablized, the new-type well screen suitable for subterranean oil gas-bearing formation more environment exploitation petroleum containing fine sand.
Technical solution used by the present invention solves the above problems is:
A kind of novel combination type screen casing multilayer outer protection tube, it is equipped with: center supervisor, outer sheath tube, strainer core pipe, center master
Pipe is the drilling screen casing type center supervisor that tube body section drills sieve pore, and at center, the drilling screen casing tube body outsourcing of supervisor connects 1-6 layers
Strainer core pipe, even outer sheath tube, outer sheath tube and strainer core pipe both ends are fixedly connected connection ring to strainer core pipe outside packet, and connection ring is solid
Surely it is connected on the tube body of center supervisor.
Above-mentioned novel combination type screen casing multilayer outer protection tube, the outer sheath tube are the groove bridge-type punching that two sides punching has filter to stitch
Slit screen pipes.
The arch (bridge) type punching that above-mentioned novel combination type screen casing multilayer outer protection tube, the outer sheath tube or two sides punching have filter to stitch
Slit screen pipes.
Above-mentioned novel combination type screen casing multilayer outer protection tube, the outer sheath tube or according to actual needs use drilling sieve
Pipe or tube body cut the cutting seam sieve tube for being formed with item seam or the wire-wrapped screen by being wound with trapezoid wind wire on support bar frame linking；Or
Two layers of outer sheath tube of cutting seam sieve tube or wire-wrapped screen and the sheath of other suitable structures are connected using drilling screen casing inner sleeve
Pipe.
Above-mentioned novel combination type screen casing multilayer outer protection tube, the outer sheath tube or according to actual needs use drilling sieve
Pipe, center supervisor are that tube body section cuts the cutting seam sieve tube for being formed with item seam.
Above-mentioned novel combination type screen casing multilayer outer protection tube, the cutting seam sieve tube are that list stitches side by side or is staggered composition,
Parallel double slit is arranged side by side or is staggered composition.
The beneficial effects of the present invention are:
The present invention is in use, as existing band filtering well screen, and according to design requirement, both ends are assemblied in producing well
Guan Shang can carry out oil-extraction sand-prevention filtration operation.
Since present invention design uses above-mentioned technical proposal, the well screen construction of existing band filtering is efficiently solved
It is complicated, the problem of filter layer easily-deformable influence filter effect.Also it tests result on trial for several times by oil field and shows it and existing skill
Art is compared, and has simple and practical in structure, lower well operations simplicity, oil inlet is not straight by bridge-type punched hole screen pipe two sides filter seam entrance in operation
Impact strainer core pipe is connect, the advantages that pasta product is big, and filter effect is stablized is flowed, is suitable for oil exploitation, is also suitable for subterranean oil gas-bearing formation
Water intaking is filtered in sand prevention containing the more environment exploitation petroleum of fine sand and deep well.
Detailed description of the invention
Fig. 1 the structural representation of present invention；
In figure: 1 pipe collar；2 centers supervisor；3 rings；4 strainer core pipes；5 outer sheath tubes；6 cutting seam sieve tubes；7 parallel double slits；8
Wire-wrapped screen；9 trapezoid wind wires；10 drilling screen casings.
Specific embodiment
Embodiment as shown in Fig. 1, the present invention are equipped with: 2, strainer core pipe 4, outer sheath tube 5, center supervisor 2 are responsible in center
It is the drilling sieve tube type center supervisor that tube body section drills sieve pore, outer sheath tube 5 is the groove bridge-type punching that two sides punching has filter to stitch
The outer sheath tube of slit screen pipes, at center, the drilling screen casing tube body outsourcing of supervisor 2 connects the strainer core pipe 4 of 3 layers of different-diameter mesh, filter
Packet connects the outer sheath tube 5 of groove bridge-type punched hole screen pipe, the outer sheath tube 5 and strainer of groove bridge-type punched hole screen pipe outside steel wire rack pipe 4
4 both ends of core pipe are fixedly connected on connection ring 3, and connection ring 3 is fixedly welded on center and is responsible on 2 tube bodies.
Further, outer sheath tube of the invention using tube body cut be formed with parallel double slit 7 be staggered composition slot sieve
The outer sheath tube of pipe 6.
Further, center supervisor of the invention is cut using tube body section is formed with parallel double slit 7 and is staggered the slot of composition
The center of screen casing 6 is responsible for.
Further, outer sheath tube of the invention uses the wire-wrapped screen by being wound with trapezoid wind wire 9 on support bar frame linking
8 outer sheath tube.
Further, the outer sheath tube that the present invention uses is two layers of outer sheath tube that drilling screen casing inner sleeve connects cutting seam sieve tube.
Claims (6)
1. a kind of screen casing multilayer outer protection tube, it is equipped with center supervisor, outer sheath tube, strainer core pipe, which is characterized in that center supervisor
It is the drilling screen casing type center supervisor (2) that tube body section drills sieve pore, connects 1- in the drilling screen casing tube body outsourcing of center supervisor (2)
6 layers of strainer core pipe (4), even outer sheath tube, outer sheath tube are fixedly connected the external packet of strainer core pipe (4) with strainer core pipe (4) both ends
Connection ring (3), connection ring (2) be fixedly connected on center supervisor (2) tube body on.
2. screen casing multilayer outer protection tube according to claim 1, which is characterized in that outer sheath tube is that two sides punching has filter to stitch
The outer sheath tube (5) of slot bridge-type punched hole screen pipe.
3. screen casing multilayer outer protection tube according to claim 1, which is characterized in that outer sheath tube is that two sides punching has filter to stitch
Arch (bridge) type punched hole screen pipe.
4. screen casing multilayer outer protection tube according to claim 1, which is characterized in that outer sheath tube is drilling screen casing (10) and manages
Body cut be formed with item seam cutting seam sieve tube (6) and the wire-wrapped screen by being wound with trapezoid wind wire on support frame (8) one kind.
5. screen casing multilayer outer protection tube according to claim 1, which is characterized in that outer sheath tube is drilling screen casing (10) inner sleeve
Even cutting seam sieve tube (6), a kind of wire-wrapped screen (8) its two layers of outer sheath tube.
6. screen casing multilayer outer protection tube according to claim 1, which is characterized in that outer sheath tube be drilling screen casing (10), in
Heart supervisor is that tube body section cuts the cutting seam sieve tube (6) for being formed with item seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710496787.9A CN109113683A (en) | 2017-06-26 | 2017-06-26 | A kind of screen casing multilayer outer protection tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710496787.9A CN109113683A (en) | 2017-06-26 | 2017-06-26 | A kind of screen casing multilayer outer protection tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109113683A true CN109113683A (en) | 2019-01-01 |
Family
ID=64822607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710496787.9A Pending CN109113683A (en) | 2017-06-26 | 2017-06-26 | A kind of screen casing multilayer outer protection tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109113683A (en) |
-
2017
- 2017-06-26 CN CN201710496787.9A patent/CN109113683A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190101 |