CN208364105U - One kind can self-expanding sand control screen - Google Patents
One kind can self-expanding sand control screen Download PDFInfo
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- CN208364105U CN208364105U CN201820925635.6U CN201820925635U CN208364105U CN 208364105 U CN208364105 U CN 208364105U CN 201820925635 U CN201820925635 U CN 201820925635U CN 208364105 U CN208364105 U CN 208364105U
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- sand control
- slot pipe
- self
- control screen
- base tube
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Abstract
The utility model provide one kind can self-expanding sand control screen, belong to oil/gas well sand control completion technology field.This can self-expanding sand control screen include top connection, lower contact, and the slot pipe base tube and inflatable slot pipe of installation therebetween；In the outside of the slot pipe base tube, the two is coaxially set the inflatable slot pipe sleeve, and with top connection, lower contact coaxial line；Swelling part is installed in the annular space that the inner wall of the inflatable slot pipe and the outer wall of slot pipe base tube surround；The inflatable slot pipe is driven to radially expand when swelling part expansion.In the tool tripping in pit shaft, it is expanded after meeting oil or water, linkage causes support bar deformation and expands, the borehole wall of the inner wall or open hole well that ensure screen casing and production casing is tightly bonded, it allows between sand control screen and production casing or open hole wall and realizes ' nullring is empty ', to hole collapse is prevented, effective supporting role is played.
Description
Technical field
The utility model belongs to oil/gas well sand control completion technology field, and in particular to one kind can self-expanding sand control screen.
Background technique
During oil reservoir development, the phenomenon that generally there are sand production of oil-gas wells, usually used is mechanical sand control, and mechanical
Pack gravel screen sand control effect in sand control is more preferable, but since the process is more complicated for screen casing gravel-pack operations, can not change
Near wellbore formation continues and the case where increasing of shaking out with exploitation, if being not filled with gravel, in screen casing and production casing inner wall or
There are annular space between the borehole wall of open hole well, rearranging for formation fines in production process is easily caused, blocks screen casing, and nearly well
Lamination drop increases, and stratum skin factor is caused to increase, production capacity decline, it is also possible to cause hole collapse.Currently in order to solving this
Problem, demi-inflation screen casing are cited, but due to the special expansion tool of tripping in need to spend largely rise the lower tubular column times and at
This, is the key problem in technology in Current mechanical sand control field so how to solve the annular space between screen casing and the borehole wall.
202914053 U of Chinese patent open source literature CN discloses a kind of sand control screen comprising: oil pipe tube body, thereon
End is connected with tubing coupling, is uniformly provided with multiple recirculation holes excessively, the multiple overcurrent on the oil pipe tube body along circumferential direction
Through-hole is arranged at intervals with multiple rows of along the axial direction of the oil pipe tube body；Self-expanding packing element is set in outside the oil pipe tube body,
The multiple perforation opposite with the multiple recirculation hole excessively are offered on the self-expanding packing element；Sieve unit, with multiple points
One end of shape sieve unit, the dotted sieve unit is threaded through in the perforation of the self-expanding packing element, and is mounted slidably
It is crossed in recirculation hole described, the other end is fixedly linked with the self-expanding packing element.The sand control screen of the utility model, utilizes chance
Oil or the self-expanding packing element for meeting water, are expanded to the borehole wall for sieve unit, and its reliability is high, and tool manufacture and maintenance cost are lower,
The sand control screen is good to irregular open hole wall adaptability, but its there are following steps: (1) area of passage is limited；(2) only
One of sand control barrier.
105626001 A of Chinese patent open source literature CN discloses a kind of novel self-expanding screen casing, successively wraps from inside to outside
Marmem slot base tube, metal screens are included, water dissolution filled layer, shape memory polymer layer are met and meet water dissolution protection
Layer, the marmem slot base tube are manufactured by marmem, are compressed to shape before expansion at high temperature, and tripping in refers to
Positioning, which postpones to be affected by temperature, voluntarily to be expanded；The shape memory polymer layer is compressed to state before expansion, room temperature at high temperature
Under change in shape will not occur.Compared with the existing technology, present invention has the advantage that being increased logical by bulged tube technology
Diameter size；It can once realize the sand control processing of multiple payzones；Without gravel pack, avoid filling not firm influence sand controlling result；Subtract
The number for having lacked running string, reduces operating cost；It realizes screen casing filtering and shape-memory polymer double medium filtration, improves
Sand controlling result；The borehole wall can be effectively supported, prevents caused cave-in of shaking out, but it has the disadvantage that (1) realization technology
Difficulty is big；(2) higher cost.
Utility model content
Utility model aims to solve above-mentioned problems existing in the prior art, and providing one kind can self-expanding sand control
Screen casing improves sand control efficiency, and in oil layer section tripping in expandable screen, carrying out self-expanding makes the outer wall of screen casing tightly be attached to production casing
Inner wall or open hole well the borehole wall, realize ' nullring empty ' operation or meet sand control requirement.
The utility model is achieved through the following technical solutions:
One kind can self-expanding sand control screen, including top connection, lower contact, and the slot pipe base tube of installation therebetween
With inflatable slot pipe；
In the outside of the slot pipe base tube, the two is coaxially set the inflatable slot pipe sleeve, and with top connection, under
Connector coaxial line；
Swelling part is installed in the annular space that the inner wall of the inflatable slot pipe and the outer wall of slot pipe base tube surround；
The inflatable slot pipe is driven to radially expand when swelling part expansion.
The swelling part includes at least one expandable rubber set, and meeting water or oil can be radially expanded；
The expandable rubber set is cirque structure, is coaxially set with the slot pipe base tube, and cover described
On the outer wall of slot pipe base tube.
The swelling part includes at least two support bars；The support bar setting is in expandable rubber sleeve and may expand
Between slot pipe；
Each support bar includes main support and at least one arc shaped wing for being connected on main support；
All arc shaped wings on each support bar are arranged in parallel；
The main support on each support bar and each arc shaped wing on the support bar are vertical, and with each arc shaped wing
Middle part connection；
When the main support of multiple support bars is arranged in parallel, and is circumferentially uniformly distributed, identical bits on each support bar
The arc shaped wing at the place of setting can enclose circle.
The mounting groove parallel with its axis, the main branch of the support bar are provided on the outer wall of each expandable rubber sleeve
Frame is parallel with the axis of expandable rubber sleeve, and in the mounting groove being embedded on each expandable rubber sleeve.
The intensity of the slot pipe base tube is higher than the intensity of the inflatable slot pipe, in expandable rubber sleeve expansion mistake
The base tube of slot pipe described in journey does not deform.
It is mounted on fixing sleeve in the two sides of the expandable rubber sleeve, the fixing sleeve is cirque structure, is passed through
The fixing sleeve is fixed on the slot pipe base tube by fixing pin；
The fixing sleeve of each expandable rubber sleeve two sides clamps the expandable rubber sleeve.
Slot is not provided at the position for corresponding to expandable rubber sleeve on the slot pipe base tube.
Preferably, circumferentially there are four support bar, the main support of four support bars is parallel for setting；Two neighboring support bar
Main support between differ 90 degree；
Each support bar includes two arc shaped wings；The arc shaped wing of four support bars surrounds two parallel circles；
The swelling part includes three expandable rubber sleeves, be located at described two parallel circular outsides and
Between two parallel circles.
The diameter of two fixing sleeves on the outermost side is greater than the diameter for being located in the middle each fixing sleeve.
The both ends of the slot pipe base tube pass through screw thread respectively and are fixedly connected with top connection, lower contact；
One end of the inflatable slot pipe is fixedly connected by screw thread with top connection, and the other end passes through pin and lower contact
It is fixedly connected.
Compared with prior art, the utility model has the beneficial effects that
It in the tool tripping in pit shaft, is expanded after meeting oil or water, linkage causes support bar deformation and expands, it is ensured that
The borehole wall of the inner wall or open hole well of screen casing and production casing is tightly bonded, and is allowed between sand control screen and production casing or open hole wall
Realize ' nullring is empty ', expandable screen is tightly attached to and wall plays effective supporting role to hole collapse is prevented；May be used also simultaneously
Migration of the reservoir sand within the scope of nearly well is prevented, the erosion because of sand migration to sand-proof pipe is reduced, has caught percolation ability high；It should
Tool process is simple, easily fabricated, cost is relatively low, easy to operate, practical reliable, is conducive in horizontal well, high angle hole and divides
The application of Zhi Jingzhong effectively increases sand control efficiency, extends the production cycle, and the borehole wall loses during reducing entire sand control treatment
The risk of steady and screen casing blocking, it is ensured that production operation is smoothly carried out, and operating cost is saved, and has before promoting and applying well
Scape.
Detailed description of the invention
The structural schematic diagram of Fig. 1 the utility model
The structural schematic diagram of support bar in Fig. 2 the utility model
Support bar placement schematic in Fig. 3 the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
There are annular spaces primarily directed between sand control screen and production casing or open hole wall for the utility model, easily cause well
The problems such as wall collapses, and sand control pipe is increased by erosion, stratum skin factor, and production capacity declines, which can be improved wellbore stability
Property, sand control efficiency is improved, is extended manufacture cycle.The utility model considers in oil/gas well sand control completion, after tripping in sand control screen
Since there are annular spaces between screen casing and production casing or open hole wall, so easily causing hole collapse, reservoir sand is within the scope of nearly well
It migrates, erosion can be generated to sand control pipe, may cause cave-in when serious, sand control screen is destroyed, so invention
Self-expanding sand control screen.
The utility model may insure wellbore stability, improve operating efficiency, saves operating cost, is mainly used in oil/gas well
In sand control completion technique.It for the oil/gas well for exploiting loose sand reservoir, could go into operation after tripping in sand control pipe, ensure oil
Gas well just generates.This can self-expanding sand control screen be connected under production casing or tail pipe, together with production casing or tail pipe
It is lowered into open hole well.It goes into operation after a certain period of time in oil/gas well, self-expanding sand control screen is contacted with open hole wall, improves sand control effect
Fruit.
As shown in Figure 1, the utility model can self-expanding sand control screen include: top connection 1, inflatable slot pipe 2, slot pipe
Base tube 3, swelling part, lower contact 8.The swelling part includes: fixing sleeve 4, support bar 5, expandable rubber sleeve 6, fixes
Pin 7.
The inflatable slot pipe 2 be it is radially distensible, slot pipe base tube 3 is always maintained at that diameter is constant, and correspondence can be swollen
It is not provided with stitching on slot pipe base tube 3 at the position of swollen rubber bush 6.The fixing sleeve 4 is annular structure, is directly sleeved on and cuts
It is fixedly connected on the outer wall of slit-tube base tube and by fixing pin 7 with slot pipe base tube 3.
The top connection 1 is lowered into naked for being connected under production casing or tail pipe together with production casing or tail pipe
In eye well；It may expand slot pipe 2 in oil layer section tripping in, after expandable rubber sleeve 6 meets water or oil expansion, link support bar 5
So that entirely inflatable slot pipe 2 expands, the outer wall of screen casing is tightly attached to the inner wall of production casing or the borehole wall of open hole well,
It realizes ' nullring is empty ' operation or meets sand control requirement；The intensity of slot pipe base tube 3 is higher than inflatable slot pipe 2, it is ensured that can be swollen
It will not deform in the expansion process of swollen rubber bush 6, the power generated after expansion is made to cause entirely inflatable slot pipe 2 outward
' nullring is empty ' is realized in expansion；Use a fixing sleeve 4 that will may expand respectively in the two sides of each expandable rubber sleeve 6 in Fig. 1
Rubber bush 6 is clamped, and the diameter for being located in the middle each fixing sleeve is greater than positioned at the diameter of the fixing sleeve at both ends.The fixing sleeve
4 are used for fixing expansible rubber bush 6, it is ensured that the stepless action of expandable rubber sleeve is on entire support bar (in the present embodiment
Using 3 expandable rubber sleeves 6, the both ends and centre for being located at support bar can according to need and set in actual use
The quantity for counting expandable rubber sleeve and the position on support bar.), to improve linkage support effect；As (Fig. 2 is branch to Fig. 2
The perspective view of stay 5) and Fig. 3 shown in, the support bar includes main support and at least one arc shaped wing for being connected on main support,
The support bar is used to link, and entirely inflatable slot pipe 2 (is circumferentially provided with 4 support bars 5, in fact in the present embodiment for support
Border is in use, the quantity of support bar can be designed as needed.), on the surface of expandable rubber sleeve 6, there are inlay support bar 5
Slot, when using 4 support bars, accordingly there are four slots on each expandable rubber sleeve 6.In expandable rubber sleeve
After 6 meet oil or water deformation, support bar 5 deforms linkage, and the support bar 5 that links, which makes entirely to may expand slot pipe 2, to be expanded, and makes
The outer wall of screen casing is tightly attached to the inner wall of production casing or the borehole wall of open hole well；The fixing pin 7 can be swollen for fixation
Swollen rubber bush 6 expands it in fixed position, to improve the expansion effect of entire inflatable slot pipe 2；It is connect under described
First 8 for connecting screen casing or down to shaft bottom.
One end of the inflatable slot pipe 2 is fixedly connected by screw thread with top connection, and the other end is connect under by pin
Head is fixedly connected.The order of connection is as follows: slot pipe 2 is connect with top connection 1；Lower contact is connect with slot pipe base tube 3；The order of connection
As follows: slot pipe base tube 3 is connect with top connection 1；Swelling part is installed；One end of inflatable slot pipe 2 is connect with top connection 1,
The other end of slot pipe base tube 3 is connect with lower contact, installs pin in the other end of slot pipe 2 and lower contact contact position.
The tool connects under production casing or tail pipe, is lowered into open hole well together with production casing or tail pipe, in oil
During gas well liquid loading, after meeting oil or water self-expanding occurs for expandable rubber sleeve 6, and linkage support bar structure makes entirely inflatable
Slot pipe expands, and sand control screen and production casing or open hole wall are tightly attached to one piece, greatly reduces in production process
Formation fines rearrange degree, prevent expandable screen from blocking, and near wellbore formation pressure drop reduces, to reduce stratum epidermis
Coefficient improves production capacity.
Exist between the general screen casing of mechanical sand control at present during oil reservoir development and the borehole wall of production casing or open hole well
Annular space easily causes cave-in, and sand control screen is by risks such as erosion or blockings, to reduce production capacity, this tool can make
So that the outer wall of screen casing is tightly attached to the inner wall of production casing or the borehole wall of open hole well derived from expansion, realize ' nullring is empty ' operation or
Sand control requirement, improves sand control efficiency, operating cost is saved, so market application prospect is very wide from now on, in the complete well of oil drilling
Operation can apply.
Above-mentioned technical proposal is a kind of embodiment of the utility model, for those skilled in the art,
On the basis of the utility model discloses principle, it is easy to make various types of improvement or deformation, be not limited solely to this reality
The structure described in novel above-mentioned specific embodiment, thus it is previously described only preferred, and it is not restrictive
Meaning.
Claims (10)
1. one kind can self-expanding sand control screen, it is characterised in that: it is described can self-expanding sand control screen include top connection, lower contact,
And the slot pipe base tube and inflatable slot pipe of installation therebetween；
In the outside of the slot pipe base tube, the two is coaxially set the inflatable slot pipe sleeve, and with top connection, lower contact
Coaxial line；
Swelling part is installed in the annular space that the inner wall of the inflatable slot pipe and the outer wall of slot pipe base tube surround；Work as institute
The inflatable slot pipe is driven to radially expand when stating swelling part expansion.
2. according to claim 1 can self-expanding sand control screen, it is characterised in that: the swelling part includes at least one
Expandable rubber set, meeting water or oil can be radially expanded；
The expandable rubber set is cirque structure, is coaxially set with the slot pipe base tube, and cover in the slot
On the outer wall of pipe base tube.
3. according to claim 2 can self-expanding sand control screen, it is characterised in that: the swelling part includes at least two
Support bar；The support bar is arranged between expandable rubber sleeve and inflatable slot pipe；
Each support bar includes main support and at least one arc shaped wing for being connected on main support；
All arc shaped wings on each support bar are arranged in parallel；
The main support on each support bar and each arc shaped wing on the support bar are vertical, and in each arc shaped wing
Portion's connection；
When the main support of multiple support bars is arranged in parallel, and is circumferentially uniformly distributed, on each support bar at same position
Arc shaped wing can enclose circle.
4. according to claim 3 can self-expanding sand control screen, it is characterised in that: in the outer of each expandable rubber sleeve
The mounting groove parallel with its axis is provided on wall；The main support of the support bar is parallel with the axis of expandable rubber sleeve, and
It is embedded into the mounting groove on each expandable rubber sleeve.
5. according to claim 4 can self-expanding sand control screen, it is characterised in that: the intensity of the slot pipe base tube is higher than
The intensity of the inflatable slot pipe, the slot pipe base tube does not deform during expandable rubber sleeve expansion.
6. according to claim 5 can self-expanding sand control screen, it is characterised in that: the two of the expandable rubber sleeve
Side is mounted on fixing sleeve；The fixing sleeve is cirque structure；The fixing sleeve is fixed on described cut by fixing pin
On slit-tube base tube；
The fixing sleeve of each expandable rubber sleeve two sides clamps the expandable rubber sleeve.
7. according to claim 6 can self-expanding sand control screen, it is characterised in that: correspondence can on the slot pipe base tube
Slot is not provided at the position of expanded rubber sleeve.
8. according to claim 7 can self-expanding sand control screen, it is characterised in that: circumferentially there are four supports for setting
The main support of item, four support bars is parallel；90 degree are differed between the main support of two neighboring support bar；
Each support bar includes two arc shaped wings；The arc shaped wing of four support bars surrounds two parallel circles；
The swelling part includes three expandable rubber sleeves, is located at described two parallel circular outsides and two
Between parallel circle.
9. according to claim 8 can self-expanding sand control screen, it is characterised in that: two fixing sleeves on the outermost side
Diameter is greater than the diameter for being located in the middle each fixing sleeve.
10. according to claim 1 can self-expanding sand control screen, it is characterised in that: the both ends of the slot pipe base tube point
It is not fixedly connected by screw thread with top connection, lower contact；
One end of the inflatable slot pipe is fixedly connected by screw thread with top connection, and the other end is fixed by pin and lower contact
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820925635.6U CN208364105U (en) | 2018-06-15 | 2018-06-15 | One kind can self-expanding sand control screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820925635.6U CN208364105U (en) | 2018-06-15 | 2018-06-15 | One kind can self-expanding sand control screen |
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| Publication Number | Publication Date |
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| CN208364105U true CN208364105U (en) | 2019-01-11 |
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| CN201820925635.6U Active CN208364105U (en) | 2018-06-15 | 2018-06-15 | One kind can self-expanding sand control screen |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259409A (en) * | 2019-07-17 | 2019-09-20 | 中石化石油工程技术服务有限公司 | Packer slip sand control installation |
| CN111574762A (en) * | 2019-02-15 | 2020-08-25 | 中石化石油工程技术服务有限公司 | Preparation method of filling-free self-adaptive sand control material |
| WO2021203799A1 (en) * | 2020-12-28 | 2021-10-14 | 中国科学院广州能源研究所 | Expanding screen tube and construction method therefor |
| CN114575796A (en) * | 2022-04-07 | 2022-06-03 | 核工业北京化工冶金研究院 | Expansion sieve tube combination device for in-situ leaching uranium mining and well completion method thereof |
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2018
- 2018-06-15 CN CN201820925635.6U patent/CN208364105U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111574762A (en) * | 2019-02-15 | 2020-08-25 | 中石化石油工程技术服务有限公司 | Preparation method of filling-free self-adaptive sand control material |
| CN110259409A (en) * | 2019-07-17 | 2019-09-20 | 中石化石油工程技术服务有限公司 | Packer slip sand control installation |
| WO2021203799A1 (en) * | 2020-12-28 | 2021-10-14 | 中国科学院广州能源研究所 | Expanding screen tube and construction method therefor |
| US11773697B2 (en) | 2020-12-28 | 2023-10-03 | Guangzhou Institute Of Energy Conversion, Chinese Academy Of Sciences | Expandable liner and method for running the same |
| CN114575796A (en) * | 2022-04-07 | 2022-06-03 | 核工业北京化工冶金研究院 | Expansion sieve tube combination device for in-situ leaching uranium mining and well completion method thereof |
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