CN101372889A - Novel horizontal well sand preventing well completion structure - Google Patents
Novel horizontal well sand preventing well completion structure Download PDFInfo
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- CN101372889A CN101372889A CNA2008101193487A CN200810119348A CN101372889A CN 101372889 A CN101372889 A CN 101372889A CN A2008101193487 A CNA2008101193487 A CN A2008101193487A CN 200810119348 A CN200810119348 A CN 200810119348A CN 101372889 A CN101372889 A CN 101372889A
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- borehole wall
- sandpipe
- horizontal
- well
- horizontal segment
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Abstract
The invention relates to a novel sand control completion structure of a horizontal well, which comprises a well wall and a sand control tube, wherein the well wall comprises an ascending section and a horizontal section. A sleeve is arranged on the ascending section of the wall; one end of the horizontal section close the ascending section is the butt end, while the end far away from the ascending section is the tip end; the angle between the horizontal section of the wall and the horizontal plane varies from 0 to 20 degrees; the sand control tube is positioned inside the horizontal section of the well wall and fixedly connected with the well wall; and the cavity between the sand control tube and the well wall is filled with glassy hollow granules. The novel sand control completion structure of the horizontal well has the advantages of easy realization of the well completion process and good well completion quality.
Description
Technical field
The invention belongs to oil or natural gas extraction field, refer to a kind of new horizontal well sand preventing well completion structure 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.In the oil and natural gas exploitation, the stratum that the quilt that has is exploited is loose sand oil-gas reservoir, has the phenomenon of shaking out in the production, need take measures to prevent that reservoir sand from flowing in the well with fluid, to guarantee the ordinary production of oil or natural gas.The reasonable horizontal well sand preventing well completion structure of sand controlling result comprises at present: the borehole wall and anti-sandpipe, the borehole wall is made up of ascent stage and horizontal segment, the horizontal segment of the borehole wall can be toward tilting, also can be toward having a down dip, anti-sandpipe is positioned at the horizontal segment of the borehole wall and fixedlys connected with the borehole wall, be filled with the gravel ring type filling in the annular space between the anti-sandpipe and the borehole wall, the particle diameter of gravel is 0.4mm～2mm.
Horizontal segment is called butt near a section of ascent stage, is called finger tip away from the end of ascent stage.
There is following point in this horizontal well sand preventing well completion structure: the completion process difficulty of horizontal well sand preventing well completion structure is big, and the completion quality does not have guarantee.The completion process of this horizontal well sand preventing well completion structure is: well-digging earlier, be lowered to anti-sandpipe again in horizontal segment, anti-sandpipe is connected to packer for one section near butt, annular pack gravel between the borehole wall and anti-sandpipe then, filling is to send in the annular space between the borehole wall and the anti-sandpipe with the water that pump will carry gravel, water is drained after being squeezed in the anti-sandpipe, and gravel is constantly preventing that accumulation forms the gravel ring on the sandpipe.In actual stowing operation, usually have the unreal situation of gravel pack, show as: the one, part filling phenomenon appears at the horizontal segment section that has, promptly the top of the annular space between the borehole wall and the anti-sandpipe occur filling less than phenomenon; The 2nd, the annular space between the borehole wall and the anti-sandpipe occur in axial section part filling less than phenomenon.Annular pack between the borehole wall and anti-sandpipe is less than the place of gravel like this, anti-sandpipe stops up easily, and completion poor quality causes oil or gas extraction amount to descend, and it is big to occur sand content in the oil of extraction or the natural gas easily, or seriously shake out, even make the horizontal well cisco unity malfunction.
Summary of the invention
It is easy to the purpose of this invention is to provide a kind of completion process, the measured new horizontal well sand preventing well completion structure of completion matter.
For achieving the above object, the present invention takes following design scheme:
A kind of new horizontal well sand preventing well completion structure, comprise: the borehole wall and anti-sandpipe, the described borehole wall is made up of ascent stage and horizontal segment, the ascent stage of the described borehole wall is provided with sleeve pipe, described horizontal segment is a butt near the end of ascent stage, end away from the ascent stage is a finger tip, angle between described horizontal segment and the horizontal plane is 0～20 degree, described anti-sandpipe is positioned at described horizontal segment, anti-sandpipe is fixedlyed connected with the described borehole wall near an end of the butt of horizontal segment, it is characterized in that being full of in the cavity between the anti-sandpipe and the borehole wall has vitreous hollow bead.
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.
The horizontal segment of the described borehole wall is the bore hole borehole wall, and described anti-sandpipe is fixedlyed connected with described sleeve pipe by packer near an end of the butt of horizontal segment.
The horizontal segment of the described borehole wall is that the described anti-sandpipe of perforated casing is fixedlyed connected with sleeve pipe by packer.
Obscuring on understand is illustrated vitreous implication hereby.Vitreous implication of the present invention 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.
Advantage of the present invention is:
1, the new horizontal well sand preventing well completion structure of the present invention, 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 anti-sandpipe, water is drained after being squeezed in the anti-sandpipe subsequently, and vitreous hollow bead is stayed in the cavity between the borehole wall and the anti-sandpipe and pile up on anti-sandpipe, at last the cavity between the borehole wall and the anti-sandpipe is filled completely vitreous hollow bead.To compare the flow of required pump little with filling gravel for the hollow bead of the cavity filling glass matter of the present invention between the borehole wall and anti-sandpipe, and loading time is short, is easy to fill full, the filling process cost is low, filling quality (mainly referring to fill the true degree of packing) is secure, prevents sand control pipe plug plug, and sand controlling result is good.
2, the new horizontal well sand preventing well completion structure of the present invention, fill hollow bead or artificial hollow glass marble in the flyash that forms after the burning in the cavity between the borehole wall and anti-sandpipe, this hollow bead and artificial hollow glass marble have the intensity height, never degenerate in the use, the source is wide, the characteristics that cost is low.
3, the new horizontal well sand preventing well completion structure of the present invention, the density of vitreous hollow bead of filling in the cavity between the borehole wall and anti-sandpipe 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, and the filling consolidation effectively prevents sand control pipe plug plug, and sand controlling result is good.
4, the new horizontal well sand preventing well completion structure of the present invention, wherein the particle diameter of vitreous hollow bead is 30～1000um, sand controlling result is good, and does not influence oil recovery or natural gas, does not also influence water filling or notes steam or annotates other displacing medium.
5, the hollow bead of the cavity filling glass matter of the present invention between the borehole wall and anti-sandpipe has the advantage of the high temperature of the high temperature on anti-stratum and steam, is applicable to that steam-assisted recovery well or steam inject well, also are applicable to other high temperature well such as deep-well.
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
The specific embodiment
As Fig. 1, shown in Figure 2, a kind of new horizontal well sand preventing well completion structure, comprise: the borehole wall 1 and anti-sandpipe 2, the borehole wall 1 is made up of ascent stage 4 and horizontal segment 5, the ascent stage 4 of the borehole wall is provided with sleeve pipe, horizontal segment 5 is a butt near the end of ascent stage 4, end away from the ascent stage 4 is a finger tip, the horizontal segment 5 of the borehole wall 1 and the angle between the horizontal plane are 0 degree or 10 degree or 20 degree, horizontal segment 5 can also can past have a down dip toward tilting, and anti-sandpipe 2 is positioned at the horizontal segment 5 of the borehole wall 1 and fixedlys connected with the borehole wall 1, it is characterized in that being full of in the cavity between the anti-sandpipe 2 and the borehole wall 1 has vitreous hollow bead 6.
Vitreous hollow bead 6 is the hollow bead in the flyash of burning back formation.
Vitreous hollow bead 6 is artificial hollow glass ball.
The density of vitreous hollow bead 6 is 0.5～1.8g/cm
3
The particle diameter of vitreous hollow bead 6 is 30～1000um.
The horizontal segment 5 of the borehole wall is the bore hole borehole wall (as shown in Figure 2), and anti-sandpipe 2 is fixedlyed connected with the sleeve pipe in the ascent stage by packer 3 near an end of the butt of horizontal segment.
The horizontal segment 5 of the borehole wall is perforated casing (as shown in Figure 1, it is a borehole wall perforation completion), and anti-sandpipe 2 is fixedlyed connected with sleeve pipe by packer.
The horizontal well sand preventing well completion structure that the present invention is new, it both had been applicable to and had recovered the oil or the producing well of natural gas, also was applicable to water filling or annotated steam or annotate the injection well of other displacing medium.
Claims (10)
1. new horizontal well sand preventing well completion structure, comprise: the borehole wall and anti-sandpipe, the described borehole wall is made up of ascent stage and horizontal segment, the ascent stage of the described borehole wall is provided with sleeve pipe, described horizontal segment is a butt near the end of ascent stage, end away from the ascent stage is a finger tip, angle between described horizontal segment and the horizontal plane is 0～20 degree, described anti-sandpipe is positioned at described horizontal segment, anti-sandpipe is fixedlyed connected with the described borehole wall near an end of the butt of horizontal segment, it is characterized in that being full of in the cavity between the anti-sandpipe and the borehole wall has vitreous hollow bead.
2. new horizontal well sand preventing well completion structure 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. new horizontal well sand preventing well completion structure 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 new horizontal well sand preventing well completion structures, it is characterized in that the density of described vitreous hollow bead is 0.5～1.8g/cm
3
5. as claim 1 or 2 or 3 described new horizontal well sand preventing well completion structures, it is characterized in that the particle diameter of described vitreous hollow bead is 30～1000um.
6. new horizontal well sand preventing well completion structure as claimed in claim 4 is characterized in that, the particle diameter of described vitreous hollow bead is 30～1000um.
7. as claim 1 or 2 or 3 described new horizontal well sand preventing well completion structures, it is characterized in that the horizontal segment of the described borehole wall is the bore hole borehole wall, described anti-sandpipe is fixedlyed connected with described sleeve pipe by packer near an end of the butt of horizontal segment.
8. new horizontal well sand preventing well completion structure as claimed in claim 4 is characterized in that, the horizontal segment of the described borehole wall is the bore hole borehole wall, and described anti-sandpipe is fixedlyed connected with described sleeve pipe by packer near an end of the butt of horizontal segment.
9. as claim 1 or 2 or 3 described new horizontal well sand preventing well completion structures, it is characterized in that the horizontal segment of the described borehole wall is that the described anti-sandpipe of perforated casing is fixedlyed connected with described sleeve pipe by packer.
10. new horizontal well sand preventing well completion structure as claimed in claim 4 is characterized in that, the horizontal segment of the described borehole wall is a perforated casing, and described anti-sandpipe is fixedlyed connected with described sleeve pipe by packer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810119348A CN101372889B (en) | 2008-09-04 | 2008-09-04 | Novel horizontal well sand preventing well completion structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810119348A CN101372889B (en) | 2008-09-04 | 2008-09-04 | Novel horizontal well sand preventing well completion structure |
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| CN101372889A true CN101372889A (en) | 2009-02-25 |
| CN101372889B CN101372889B (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810119348A Expired - Fee Related CN101372889B (en) | 2008-09-04 | 2008-09-04 | Novel horizontal well sand preventing well completion structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011069341A1 (en) * | 2009-12-11 | 2011-06-16 | 安东石油技术（集团）有限公司 | Segmented current controlling method of current controlling filter pipe column for oil-gas well and structure of oil-gas well |
| US9022110B2 (en) | 2009-12-11 | 2015-05-05 | Anton Bailin Oilfield Technologies Co., Ltd. | Segmental flow-control method for flow-control filter string in oil-gas well and oil-gas well structure |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2125694U (en) * | 1992-05-05 | 1992-12-23 | 李涛 | Two-layer screen tube sand prevention unit |
| US5375661A (en) * | 1993-10-13 | 1994-12-27 | Halliburton Company | Well completion method |
| US5507345A (en) * | 1994-11-23 | 1996-04-16 | Chevron U.S.A. Inc. | Methods for sub-surface fluid shut-off |
| CN1186149A (en) * | 1996-12-22 | 1998-07-01 | 胜利石油管理局孤东采油厂 | Anti-sand filling material for oil well and water well and preparation thereof |
| US6318465B1 (en) * | 1998-11-03 | 2001-11-20 | Baker Hughes Incorporated | Unconsolidated zonal isolation and control |
| GB0524520D0 (en) * | 2005-12-01 | 2006-01-11 | Premier Chance Ltd | Product |
| CN100355838C (en) * | 2006-05-24 | 2007-12-19 | 西南石油大学 | Hydrophobic oleophilic self-cementing sand and its preparation method |
| CN101255786A (en) * | 2008-04-15 | 2008-09-03 | 中国石化集团胜利石油管理局石油开发中心 | Method for backfilling and prevention of sand in horizontal well pipe |
-
2008
- 2008-09-04 CN CN200810119348A patent/CN101372889B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011069341A1 (en) * | 2009-12-11 | 2011-06-16 | 安东石油技术（集团）有限公司 | Segmented current controlling method of current controlling filter pipe column for oil-gas well and structure of oil-gas well |
| GB2488939A (en) * | 2009-12-11 | 2012-09-12 | Anton Oilfield Serv Group Ltd | Segmented current controlling method of current controlling filter pipe column for oil-gas well and structure of oil-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 |
| US9022110B2 (en) | 2009-12-11 | 2015-05-05 | Anton Bailin Oilfield Technologies Co., Ltd. | Segmental flow-control method for flow-control filter string in oil-gas well and oil-gas well structure |
| GB2488939B (en) * | 2009-12-11 | 2015-10-14 | Anton Bailin Oilfield Technologies Beijing Co Ltd | Segmental flow-control method for flow-control filter string in oil-gas well and oil-gas well structure |
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| CN101372889B (en) | 2012-10-24 |
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| C14 | Grant of patent or utility model | ||
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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: 20130617 |
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Free format text: CORRECT: ADDRESS; FROM: 100102 CHAOYANG, BEIJING TO: 102200 CHANGPING, BEIJING |
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Effective date of registration: 20130617 Address after: 102200 Beijing Changping District Science Park Road No. 10, No. 2 white floating floor 2 Room 215 Patentee after: ANTON BAILIN OILFIELD 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. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20210904 |