CN101338660B - Horizontal production-injection well completion structure possessing flow control function - Google Patents
Horizontal production-injection well completion structure possessing flow control function Download PDFInfo
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- CN101338660B CN101338660B CN 200810118109 CN200810118109A CN101338660B CN 101338660 B CN101338660 B CN 101338660B CN 200810118109 CN200810118109 CN 200810118109 CN 200810118109 A CN200810118109 A CN 200810118109A CN 101338660 B CN101338660 B CN 101338660B
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Abstract
The present invention relates to a horizontal injection-production well completion structure with flow control function. The horizontal injection-production well completion structure comprises a well wall and a flow control filter. The well wall consists of a rising section and a horizontal section. The flow control filter is arranged in the horizontal section of the well wall and is fixedly connected with the well wall. A cavity between the flow control filter and the well wall is filled with glass hollow particles. The horizontal injection-production well completion structure with the flow control function of the present invention has the characteristics of being easy for realizing, low well completion cost and strong function for axial anti-fluid-channeling.
Description
Technical field
The invention belongs to oil and natural gas exploitation field, espespecially a kind of horizontal production-injection well completion structure with flow control function.
Background technology
Horizontal well is owing to having 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 recover 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 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 to 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 the flow control 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 flow control strainer (the flow control strainer is to control uninterrupted or strainer that can the switch flow), also has packer to add the method for other flow control tubing string.The below adds the flow control strainer take packer method is illustrated as example.
The horizontal injection-production well with flow control function that the present invention talks refers to angle between well horizontal segment and the horizontal plane at 0～20 degree, and adopts the injection-production well of flow control strainer.
As shown in Figure 3, existing horizontal production-injection well completion structure with flow control function, comprise: the borehole wall 1 and flow control strainer 2, the borehole wall 1 is comprised 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, flow control strainer 2 is positioned at the horizontal segment 5 of the borehole wall and is fixedly connected with the borehole wall 1, is folded with vertically several ring seal packers 6 between flow control strainer 2 and the borehole wall 1 cavity between flow control strainer 2 and the borehole wall 1 is divided into some sections annular spaces 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, enter the flow control strainer again and are plucked out of.When above-mentioned injection-production well is used for injected water or steam or other displacing medium when driving near the producing well oil or natural gas, be to be injected in the stratum by flow control strainer, annular space and the borehole wall, oil or natural gas are driven around the extraction well.
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 the price of ring seal packer own is high and installation difficulty is large, 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, adopt ring seal packer to carry out each section cavity of injection-production well of packing long, be 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 large in every section cavity, may be to the section that has in the extraction well cavity in water outlet, some sections fuel-displaced, giving vent to anger is not easy to by the further segmentation control of flow control strainer.Fast to the section injection rate that has in the Injection Well cavity, some section injection rates are very slow, also are not easy to by the further segmentation control of flow control strainer.The final recovery ratio that affects oil gas field.
2, this production-injection well completion structure, because losing efficacy or damaged condition in use easily appears in ring seal packer wherein, if there is losing efficacy or damaged condition, packer does not then have the effect of packing.
3, this production-injection well completion structure, moderate finite deformation might occur 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 flow control strainer, to solve the axial channelling problem in water or the cavity of gas between the borehole wall and flow control strainer.But filling sand or haydite difficulty are large in horizontal injection-production well, exist and fill unreal problem, do not reach the purpose of the axial channelling of anti-sealing or gas.
Summary of the invention
The purpose of this invention is to provide a kind ofly be 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 present invention takes following design scheme:
A kind of horizontal production-injection well completion structure with flow control function, comprise: the borehole wall and flow control strainer, the described borehole wall is comprised 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 flow control filter bits is fixedly connected with in the horizontal segment of the described borehole wall and with the described borehole wall, it is characterized in that, being full of in the cavity between described flow control strainer and the described borehole wall has vitreous hollow bead.
Obscuring on understand is illustrated vitreous implication hereby.Vitreous implication of the present invention is take silica as main component, and forming process forms from the melting 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 rear flyash that forms of burning.
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 flow control strainer is fixedly connected with the described borehole wall with described borehole wall bolt or by hanging packer.
Advantage of the present invention is:
1, the present invention has the horizontal production-injection well completion structure of flow control function, owing to adopting above design scheme, in the Completion Operations, the water that will carry vitreous hollow bead with pump is sent in the cavity between the borehole wall and the flow control strainer, water is squeezed in the flow control strainer and is discharged subsequently, and vitreous hollow bead is stayed in the cavity between the borehole wall and the flow control strainer, at last the cavity between the borehole wall and the flow control strainer is filled full vitreous hollow bead.To compare the flow of required pump little with filling sand for the hollow bead of the cavity filling glass matter between the borehole wall and flow control strainer, loading time is short, being easy to fill expires, and filling quality (mainly referring to the filling degree of packing) is secure and axial filtrational resistance packing ring is large.
Mobile in vitreous hollow bead of the hollow bead of the cavity filling glass matter between the borehole wall and flow control strainer, 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 consists of are little, axial length is large, formation fluid flow resistance along the axial channelling of cavity between the borehole wall and the flow control strainer in vitreous hollow bead ring is very large; And large along the cavity radial flow area between the borehole wall and the flow control strainer, distance is short, and flow resistance is very little.Along the cavity axial flow number between the borehole wall and the flow control strainer meter to tens of meters flow resistance than along the large hundred times of flow resistance of several centimetres of the cavity Radial Flow between the borehole wall and the flow control strainer even thousands of times, along the cavity axial flow between the borehole wall and the flow control strainer with along the greatest differences of the flow resistance of the cavity Radial Flow between the borehole wall and the flow control strainer, cause under the same pressure differential effect, be far smaller than along the flow of the cavity Radial Flow between the borehole wall and the flow control strainer along the flow of the cavity axial flow between the borehole wall and the flow control strainer.Utilize so vitreous hollow bead in the otherness of axial and Radial Flow resistance, can guarantee unimpeded to along vitreous hollow bead Radial Flow of formation fluid, limit again axial the flowing of the cavity along between the borehole wall and the flow control strainer of formation fluid, played the effect of ring seal packer.
2, the present invention has the horizontal production-injection well completion structure of flow control function, fills the hollow bead in the flyash that forms after the burning in the cavity between the borehole wall and flow control strainer, and it is high that this hollow bead has intensity, never degenerates in the use, and the source is wide, the characteristics that cost is low.
3, the present invention has the horizontal production-injection well completion structure of flow control function, and the density of vitreous hollow bead of filling in the cavity between the borehole wall and flow control strainer 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 present invention has the horizontal production-injection well completion structure of flow control function, and wherein the particle diameter of vitreous hollow bead is 30～1000um, thereby realizes that axial flow control effect is good, and does not affect oil recovery or natural gas.
5 and the hollow bead of the cavity filling glass matter of the present invention between the borehole wall and flow control strainer compare with the available technology adopting ring seal packer, have advantages of that the completion cost is low.
6, the hollow bead of the cavity filling glass matter of the present invention between the borehole wall and flow control strainer has advantages of the high temperature on anti-stratum and the high temperature of steam, is applicable to the well of steam exploitation.
7, the present invention has the horizontal production-injection well completion structure of flow control function, and the density of vitreous hollow bead of filling in the cavity between the borehole wall and flow control strainer is 0.5～1.8g/cm
3When water channeling appears in the cavity between the borehole wall and the flow control strainer, both made the cavity between the borehole wall and the flow control strainer not be full of vitreous hollow bead, 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 embodiment of the invention one structural representation
Fig. 2 represents the embodiment of the invention two structural representations
Fig. 3 represents the prior art structural representation
The specific embodiment
The present invention is a kind of to have the horizontal production-injection well completion structure of flow control function (such 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 flow control strainer 2, the borehole wall 1 is comprised 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 flow control strainer 2 is positioned at the borehole wall is fixedly connected with the borehole wall 1, it is characterized in that, being full of in the cavity between flow control strainer 2 and the borehole wall 1 has vitreous hollow bead 8.
Cavity between above-mentioned flow control strainer 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.
The sleeve pipe bolt of flow control strainer 2 and the borehole wall 1, or be fixedly connected with (as shown in Figure 1 and Figure 2) by hanging packer 3 with the borehole wall 1.
Claims (6)
1. horizontal production-injection well completion structure with flow control function, comprise: the borehole wall and flow control strainer, the described borehole wall is comprised 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 flow control filter bits is fixedly connected with in the horizontal segment of the described borehole wall and with the described borehole wall, it is characterized in that, being full of in the cavity between described flow control strainer and the described borehole wall has vitreous hollow bead, and the density of described vitreous hollow bead is 0.5 ~ 1.8g/cm
3
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 rear flyash that forms of burning.
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. such as claim 1 or 2 or 3 described horizontal production-injection well completion structures with flow control function, it is characterized in that, the particle diameter of described vitreous hollow bead is 30 ~ 1000um.
5. such as claim 1 or 2 or 3 described horizontal production-injection well completion structures with flow control function, it is characterized in that, described flow control strainer is fixedly connected with the described borehole wall with described borehole wall bolt or by hanging packer.
6. the horizontal production-injection well completion structure with flow control function as claimed in claim 4 is characterized in that, described flow control strainer is fixedly connected with the described borehole wall with described borehole wall bolt or by hanging packer.
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| CN 200810118109 CN101338660B (en) | 2008-08-12 | 2008-08-12 | Horizontal production-injection well completion structure possessing flow control function |
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| CN 200810118109 CN101338660B (en) | 2008-08-12 | 2008-08-12 | Horizontal production-injection well completion structure possessing flow control function |
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| CN101338660B true CN101338660B (en) | 2013-02-13 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575514A (en) * | 2009-10-22 | 2012-07-11 | 雪佛龙美国公司 | Steam distribution apparatus and method for enhanced oil recovery of viscous oil |
| CN101705808B (en) | 2009-12-11 | 2012-05-30 | 安东石油技术（集团）有限公司 | Sectional flow control method for flow control filter pipe column of oil-gas well with bushing outside channel |
| 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 |
| CN101705802B (en) | 2009-12-11 | 2013-05-15 | 安东石油技术（集团）有限公司 | Anti-crossflow packing particles for production sections of oil and gas wells |
| US10344585B2 (en) | 2015-03-26 | 2019-07-09 | Chevron U.S.A. Inc. | Methods, apparatus, and systems for steam flow profiling |
| CN108266173B (en) * | 2018-01-22 | 2020-12-11 | 中国石油化工股份有限公司 | Method for segmented reconstruction of well completion |
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| CN1538943A (en) * | 2001-08-06 | 2004-10-20 | ̩ | Low density, fibre-reinforced cement composition |
| CN101122218A (en) * | 2007-09-24 | 2008-02-13 | 辽河石油勘探局 | Drift sand well harnessing process |
| CN201236685Y (en) * | 2008-08-12 | 2009-05-13 | 安东石油技术（集团）有限公司 | Horizontal production-injection well completion structure with flow control function |
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Patent Citations (3)
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|---|---|---|---|---|
| CN1538943A (en) * | 2001-08-06 | 2004-10-20 | ̩ | Low density, fibre-reinforced cement composition |
| CN101122218A (en) * | 2007-09-24 | 2008-02-13 | 辽河石油勘探局 | Drift sand well harnessing process |
| CN201236685Y (en) * | 2008-08-12 | 2009-05-13 | 安东石油技术（集团）有限公司 | Horizontal production-injection well completion structure with flow control function |
Non-Patent Citations (2)
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| 危礼华 等.埕岛油田水平井裸眼防砂完井配套技术.《石油天然气学报（江汉石油学院学报）》.2007,第29卷(第3期),302-304. * |
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Owner name: ANTON BERLIN OIL TECHNOLOGY (BEIJING) CO., LTD. Free format text: FORMER OWNER: ANDONG PETROLEUM TECHNOLOGY (GROUP) CO., LTD. Effective date: 20130614 |
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Effective date of registration: 20130614 Address after: 102200 Beijing Changping District Science Park Road No. 10, No. 2 white floating floor 2 Room 215 Patentee after: Berlin Andong Petroleum Science and Technology (Beijing) Co., Ltd. Address before: 100102 Beijing, East Lake, No. West Road screen screen Road, No. 8 Patentee before: Anton Oilfield Services (Group) Ltd. |