CN201236685Y - Horizontal production-injection well completion structure with flow control function - Google Patents
Horizontal production-injection well completion structure with flow control function Download PDFInfo
- Publication number
- CN201236685Y CN201236685Y CNU2008201099118U CN200820109911U CN201236685Y CN 201236685 Y CN201236685 Y CN 201236685Y CN U2008201099118 U CNU2008201099118 U CN U2008201099118U CN 200820109911 U CN200820109911 U CN 200820109911U CN 201236685 Y CN201236685 Y CN 201236685Y
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- borehole wall
- injection well
- flow control
- well completion
- control function
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Abstract
The utility model relates to a horizontal injection oil recovery well completion structure which has the flow control function. The structure comprises a well wall and a flow control filter; the well wall comprises an ascending section and a horizontal section; the flow control filter is positioned inside the horizontal section of the well wall and is fixedly connected with the well wall; and the cavity between the flow control filter and the well wall is filled with hollow beads made of glass. The structure provided by the utility model has the characteristics of easy realization, low completion cost, and good axial inter-porosity flow resistance.
Description
Technical field
The utility model belongs to oil and natural gas exploitation field, refers to a kind of horizontal production-injection well completion structure with flow control function especially.
Background technology
Horizontal well is owing to have higher output and the extensive use in exploitation of oil-gas field of other advantage than straight well.Horizontal injection-production well both can be used for recovering the oil or natural gas, also can be used for water filling annotate steam or other displacing medium with will wait to recover the oil or natural gas drive around the extraction well, when it is used to recover the oil or then is called the extraction well during natural gas; When it is used for water filling or annotates steam or annotate other displacing medium, then be called the injection well, be called altogether to annotate and adopt horizontal well.
From the well exploitation effect of improving the standard, the exploitation of horizontal well need be implemented segmentation control to the horizontal segment of horizontal well and annotate the exploitation of sampled-current amount.Flow can be the output flow that flows to from the stratum the well, also can be by the injection flow that flows to the stratum in the well.It is the method that adds control stream tubing string with packer that prior art is implemented segmentation control notes sampled-current amount to the horizontal segment of horizontal well, one class packer adds the method for control flow filter (the control flow filter is to control flow size or strainer that can the switch flow), also has packer to add the method for other control stream tubing string.Adding the method for controlling flow filter with packer below is that example is illustrated.
The horizontal injection-production well with flow control function that the utility model is talked is meant angle between well horizontal segment and the horizontal plane at 0～20 degree, and adopts the injection-production well of control flow filter.
As shown in Figure 3, existing horizontal production-injection well completion structure with flow control function, comprise: the borehole wall 1 and control flow filter 2, the borehole wall 1 is made up of ascent stage 4 and horizontal segment 5, the horizontal segment 5 of the borehole wall and the angle between the horizontal plane are 0～20 degree, control flow filter 2 is positioned at the horizontal segment 5 of the borehole wall and fixedlys connected with the borehole wall 1, controls to be folded with the cavity that several ring seal packers 6 will control between the flow filter 2 and the borehole wall 1 between the flow filter 2 and the borehole wall 1 vertically and to be divided into plurality of sections annular space 7.
When above-mentioned injection-production well was used for oil recovery or natural gas, oil or natural gas entered in the annular space by the borehole wall, entered the control flow filter again by extraction.When above-mentioned injection-production well is used to inject water or steam or other displacing medium when driving near the producing well oil or natural gas, be to be injected in the stratum, oil or natural gas are driven around the extraction well by control flow filter, annular space and the borehole wall.
There is following problem in above-mentioned horizontal production-injection well completion structure with flow control function:
1, this production-injection well completion structure, because wherein price height of ring seal packer own and installation difficulty is big, in the prior art, the quantity of the ring seal packer in every mouthful of production-injection well completion structure can be not too many.Therefore, it is long to adopt ring seal packer to carry out each section cavity of injection-production well of packing, is generally tens meters even up to a hundred meters.Because the cavity of every section circulation is long, the difference such as permeability on stratum are big in every section cavity, may be to the section that has in the extraction well cavity in water outlet, the section that has fuel-displaced, giving vent to anger is not easy to by the further segmentation control of control flow filter.Fast to injecting the section injection rate that has in the well cavity, the section injection rate that has is very slow, also is not easy to by the further segmentation control of control flow filter.The final recovery ratio that influences oil gas field.
2, this production-injection well completion structure, because losing efficacy or damaged condition in use appears in ring seal packer wherein easily, if lost efficacy or damaged condition, packer does not then have the effect of packing.
3, this production-injection well completion structure, moderate finite deformation might take place in the borehole wall wherein, and in the injection-production well of borehole wall generation moderate finite deformation, ring seal packer can't be used.
In sum, because there are the problems referred to above in existing horizontal production-injection well completion structure with flow control function, the applicant once considered to fill sand or haydite between the borehole wall and control flow filter, to solve the axial channelling problem in water or the gas cavity between the borehole wall and control flow filter.But filling sand or haydite difficulty are big in horizontal injection-production well, exist and fill unreal problem, do not reach the purpose of the axial channelling of anti-sealing or gas.
The utility model content
The purpose of this utility model provides and a kind ofly is easy to realize, the completion cost is low, the axial anti-strong horizontal production-injection well completion structure with flow control function of channelling function.
For achieving the above object, the utility model is taked following design scheme:
A kind of horizontal production-injection well completion structure with flow control function, comprise: the borehole wall and control flow filter, the described borehole wall is made up of ascent stage and horizontal segment, the horizontal segment of the described borehole wall and the angle between the horizontal plane are 0～20 degree, described control flow filter is positioned at the horizontal segment of the described borehole wall and fixedlys connected with the described borehole wall, it is characterized in that being full of in the cavity between the described control flow filter and the described borehole wall has vitreous hollow bead.
Obscuring on understand is illustrated vitreous implication hereby.Vitreous implication described in the utility model is to be main component with silica, and forming process forms from the fusion cooling as the forming process of glass, and the cooling procedure medium viscosity progressively increases and hardens, and non crystallized material.
Described vitreous hollow bead is the hollow bead in the flyash of burning back formation.
Described vitreous hollow bead is artificial hollow glass ball.
The density of described vitreous hollow bead is 0.5～1.8g/cm
3
The particle diameter of described vitreous hollow bead is 30～1000um.
Described control flow filter is fixedlyed connected with the described borehole wall with described borehole wall bolt or by hanging packer.
The utility model has the advantages that:
1, the utlity model has the horizontal production-injection well completion structure of flow control function, owing to adopt above design scheme, in the completion process, the water that will carry vitreous hollow bead with pump is sent in the cavity between the borehole wall and the control flow filter, water is squeezed in the control flow filter and is drained subsequently, and vitreous hollow bead is stayed in the borehole wall and the cavity of control between the flow filter, at last the borehole wall and the cavity between the control flow filter is filled completely vitreous hollow bead.The hollow bead of the cavity filling glass matter between the flow filter and fill sand to compare the flow of required pump little at the borehole wall and control, loading time is short, is easy to fill full, and filling quality (mainly referring to the filling degree of packing) is secure and axial filtrational resistance packing ring is big.
Mobile in vitreous hollow bead of the hollow bead of the cavity filling glass matter between the flow filter at the borehole wall and control, formation fluid is a kind of seepage flow.According to seepage flow mechanics theory, the size of filtrational resistance is directly proportional with the seepage flow distance, is inversely proportional to seepage area.Because thin thickness, the section of the ring that vitreous hollow bead constitutes are little, axial length is big, formation fluid flow resistance along the axial channelling of cavity between the borehole wall and the control flow filter in vitreous hollow bead ring is very big; And big along the cavity radial flow area between the borehole wall and the control flow filter, distance is short, and flow resistance is very little.Along the borehole wall and control the cavity axial flow number between the flow filter meter to tens of meters flow resistance than along the borehole wall and the big hundred times of flow resistance of controlling several centimetres of cavity Radial Flow between the flow filter even thousands of times, along the borehole wall and control between the flow filter the cavity axial flow and along the greatest differences of the borehole wall with the flow resistance of controlling the cavity Radial Flow between the flow filter, cause under the same pressure differential effect, the flow of the cavity axial flow between the flow filter is far smaller than along the borehole wall and the flow of controlling the cavity Radial Flow between the flow filter along the borehole wall and control.Utilize the otherness of vitreous hollow bead like this at axial and Radial Flow resistance, can guarantee formation fluid unimpeded to along vitreous hollow bead Radial Flow, limited again formation fluid along the borehole wall and axial the flowing of the cavity of control between the flow filter, play the effect of ring seal packer.
2, the utlity model has the horizontal production-injection well completion structure of flow control function, hollow bead in the flyash that forms after filling burning in the cavity between the borehole wall and control flow filter, this hollow bead has the intensity height, never degenerates in the use, the source is wide, the characteristics that cost is low.
3, the utlity model has the horizontal production-injection well completion structure of flow control function, the density of vitreous hollow bead of filling in the cavity between the borehole wall and control flow filter is 0.5～1.8g/cm
3, be easy to water and carry filling, and the flow of required pump being little, loading time is short, the filling consolidation, axially anti-channelling ability is strong.
4, the utlity model has the horizontal production-injection well completion structure of flow control function, wherein the particle diameter of vitreous hollow bead is 30～1000um, thereby realizes that axial flow control effect is good, and does not influence oil recovery or natural gas.
5 and the utility model is compared with the available technology adopting ring seal packer with the hollow bead of the cavity filling glass matter of control between the flow filter at the borehole wall, have the low advantage of completion cost.
6, the hollow bead of the utility model cavity filling glass matter between the flow filter at the borehole wall and control has the advantage of the high temperature of the high temperature on anti-stratum and steam, is applicable to the well of steam exploitation.
7, the utlity model has the horizontal production-injection well completion structure of flow control function, the density of vitreous hollow bead of filling in the cavity between the borehole wall and control flow filter is 0.5～1.8g/cm
3When water channeling appears in the cavity between the borehole wall and the control flow filter, the cavity that had both made the borehole wall and controlled between the flow filter is not full of vitreous hollow bead, and the interior vitreous hollow bead of filling of this cavity also can be carried migration and form the accumulation obstruction by water, plays the anti-channeling effect.
Description of drawings
Fig. 1 represents the utility model embodiment one structural representation
Fig. 2 represents the utility model embodiment two structural representations
Fig. 3 represents the prior art structural representation
The specific embodiment
The utility model is a kind of to have the horizontal production-injection well completion structure of flow control function (as Fig. 1, shown in Figure 2, wherein Fig. 1 represents that the horizontal segment borehole wall is the horizontal production-injection well completion structure of sleeve pipe, Fig. 2 represents that the horizontal segment borehole wall is the horizontal production-injection well completion structure of the bore hole borehole wall of drilling well formation), comprise: the borehole wall 1 and control flow filter 2, the borehole wall 1 is made up of ascent stage 4 and horizontal segment 5, the horizontal segment 5 of the borehole wall and the angle between the horizontal plane are 0 degree or 10 degree or 20 degree, and the front end of the horizontal segment 5 of the borehole wall can be toward tilting, also can be toward having a down dip, the horizontal segment 5 that control flow filter 2 is positioned at the borehole wall is fixedlyed connected with the borehole wall 1, it is characterized in that being full of in the cavity between the control flow filter 2 and the borehole wall 1 has vitreous hollow bead 8.
Cavity between the above-mentioned control flow filter 2 and the borehole wall 1 can be full of vitreous hollow bead 8, also can be filled with vitreous hollow bead 8 in the part.
Vitreous hollow bead 8 is the hollow bead in the flyash that forms after the burning or is artificial hollow glass ball.
The density of vitreous hollow bead 8 is 0.5～1.8g/cm
3
The particle diameter of vitreous hollow bead 8 is 30um or 500um or 1000um.
Control the sleeve pipe bolt of the flow filter 2 and the borehole wall 1, or fixedly connected (as shown in Figure 1 and Figure 2) with the borehole wall 1 by hanging packer 3.
Claims (10)
1, a kind of horizontal production-injection well completion structure with flow control function, comprise: the borehole wall and control flow filter, the described borehole wall is made up of ascent stage and horizontal segment, the horizontal segment of the described borehole wall and the angle between the horizontal plane are 0～20 degree, described control flow filter is positioned at the horizontal segment of the described borehole wall and fixedlys connected with the described borehole wall, it is characterized in that being full of in the cavity between the described control flow filter and the described borehole wall has vitreous hollow bead.
2, the horizontal production-injection well completion structure with flow control function as claimed in claim 1 is characterized in that, described vitreous hollow bead is the hollow bead in the flyash of burning back formation.
3, the horizontal production-injection well completion structure with flow control function as claimed in claim 1 is characterized in that, described vitreous hollow bead is artificial hollow glass ball.
4, as claim 1 or 2 or 3 described horizontal production-injection well completion structures, it is characterized in that the density of described vitreous hollow bead is 0.5～1.8g/cm with flow control function
3
5, as claim 1 or 2 or 3 described horizontal production-injection well completion structures, it is characterized in that the particle diameter of described vitreous hollow bead is 30～1000um with flow control function.
6, the horizontal production-injection well completion structure with flow control function as claimed in claim 4 is characterized in that, the particle diameter of described vitreous hollow bead is 30～1000um.
As claim 1 or 2 or 3 described horizontal production-injection well completion structures, it is characterized in that 7, described control flow filter is fixedlyed connected with the described borehole wall with described borehole wall bolt or by hanging packer with flow control function.
8, the horizontal production-injection well completion structure with flow control function as claimed in claim 4 is characterized in that, described control flow filter is fixedlyed connected with the described borehole wall with described borehole wall bolt or by hanging packer.
9, the horizontal production-injection well completion structure with flow control function as claimed in claim 5 is characterized in that, described control flow filter is fixedlyed connected with the described borehole wall with described borehole wall bolt or by hanging packer.
10, the horizontal production-injection well completion structure with flow control function as claimed in claim 6 is characterized in that, described control flow filter is fixedlyed connected with the described borehole wall with described borehole wall bolt or by hanging packer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201099118U CN201236685Y (en) | 2008-08-12 | 2008-08-12 | Horizontal production-injection well completion structure with flow control function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201099118U CN201236685Y (en) | 2008-08-12 | 2008-08-12 | Horizontal production-injection well completion structure with flow control function |
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| CN201236685Y true CN201236685Y (en) | 2009-05-13 |
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| CNU2008201099118U Expired - Lifetime CN201236685Y (en) | 2008-08-12 | 2008-08-12 | Horizontal production-injection well completion structure with flow control function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338660A (en) * | 2008-08-12 | 2009-01-07 | 安东石油技术（集团）有限公司 | Horizontal production-injection well completion structure possessing flow control function |
| CN102434131A (en) * | 2010-09-29 | 2012-05-02 | 安东石油技术（集团）有限公司 | Sand-preventing filling method and equipment for oil and gas well |
| CN101705809B (en) * | 2009-12-11 | 2012-12-26 | 安东石油技术（集团）有限公司 | Segmented current controlling method of current controlling filter pipe column of oil-gas well having sand control pipe |
| CN108756831A (en) * | 2018-05-28 | 2018-11-06 | 中国海洋石油集团有限公司 | A kind of horizontal well control water completion structure of self-adaptation type |
| CN111119787A (en) * | 2019-11-28 | 2020-05-08 | 中国海洋石油集团有限公司 | Horizontal well stratum anti-channeling water control well completion structure |
-
2008
- 2008-08-12 CN CNU2008201099118U patent/CN201236685Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338660A (en) * | 2008-08-12 | 2009-01-07 | 安东石油技术（集团）有限公司 | Horizontal production-injection well completion structure possessing flow control function |
| CN101338660B (en) * | 2008-08-12 | 2013-02-13 | 安东石油技术（集团）有限公司 | Horizontal production-injection well completion structure possessing flow control function |
| CN101705809B (en) * | 2009-12-11 | 2012-12-26 | 安东石油技术（集团）有限公司 | Segmented current controlling method of current controlling filter pipe column of oil-gas well having sand control pipe |
| CN102434131A (en) * | 2010-09-29 | 2012-05-02 | 安东石油技术（集团）有限公司 | Sand-preventing filling method and equipment for oil and gas well |
| CN102434131B (en) * | 2010-09-29 | 2014-10-29 | 安东石油技术（集团）有限公司 | Sand-preventing filling method and equipment for oil and gas well |
| CN108756831A (en) * | 2018-05-28 | 2018-11-06 | 中国海洋石油集团有限公司 | A kind of horizontal well control water completion structure of self-adaptation type |
| CN111119787A (en) * | 2019-11-28 | 2020-05-08 | 中国海洋石油集团有限公司 | Horizontal well stratum anti-channeling water control well completion structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090513 Effective date of abandoning: 20080812 |
|
| RGAV | Abandon patent right to avoid regrant |