CN101967962A - Horizontal well sand washing device - Google Patents
Horizontal well sand washing device Download PDFInfo
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- CN101967962A CN101967962A CN2010105010317A CN201010501031A CN101967962A CN 101967962 A CN101967962 A CN 101967962A CN 2010105010317 A CN2010105010317 A CN 2010105010317A CN 201010501031 A CN201010501031 A CN 201010501031A CN 101967962 A CN101967962 A CN 101967962A
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- sand
- sand washing
- horizontal well
- tubing string
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Abstract
The invention provides a horizontal well sand washing device. A downhole string of the horizontal well sand washing device is a concentric double-pipe sand washing string; the concentric double-pipe sand washing string is divided into an upper vertical well section part and a lower horizontal well section part and comprises an outer layer string 4 and an inner layer string 5, wherein the upper vertical well section part is provided with a crossing channel sealer 3 so as to realize channel switching; sand washing power liquid on the upper vertical well section part is input by a sand washing pipe 2 and is switched to an annular channel between the outer layer string 4 and the inner layer string 5 through the crossing channel sealer 3; a reverse circulation hydraulic jet pump 7 of the lower horizontal well section part is driven to work; and mixed liquid of the exhausted power liquid on the lower horizontal well section part and high-sand content liquid is sucked by the reverse circulation hydraulic jet pump 7, is output by the inner layer string 5, and is switched to an annular cavity between the sand washing pipe 2 and a liner pipe 1 for output through the crossing channel sealer 3 so as to be butted with the conventional sand washing process on the ground.
Description
Technical field
The present invention relates to the sand washing technology in the oil exploitation, relate in particular to a kind of horizontal well sand flushing device.
Background technology
Conventional sand washing mode is adopted in horizontal well sand washing at present basically, and this sand washing mode exists serious problems, does not all reach ideal effect, has a strong impact on the carrying out of technologies such as follow-up lifting.For the horizontal well that shakes out of a large amount of appearance, the horizontal well sand washing has become bottle footpath technology, must solve, otherwise will seriously restrict horizontal well technology in the application of block of shaking out.
Mainly there are following two problems in the horizontal well sand washing:
(1) stirring of shaft bottom sand setting and suspension: the sand washing of Vertical Well section, the direction that the sand washing nib advances are perpendicular to shaft bottom sand face, and shaft bottom sand can fully be stirred, and is suspended in the sand cleaning fluid.But for high angle hole and horizontal well, during with conventional sand washing mode sand washing, the direction that the sand washing nib advances is tending towards parallel with shaft bottom sand face, and sand cleaning fluid can not directly vertically act on shaft bottom sand face, the shaft bottom sand setting can not fully be stirred and is suspended in the sand cleaning fluid, causes sand to dash to come out.
(2) level of shaft bottom sand migration: all have gravity effect to exist under the various hole angle situations, correlation test and data show, hole angle is between 0～30 °, sand grains in the liquid stream has sufficiently long settling height, therefore and the frictional force of the sand and the borehole wall is also very little, and the settling rate that is higher than sand grains when liquid flowing speed just can be carried it outside.Along with hole angle increases, sand fallout is shortening to the distance of the borehole wall, and the frictional force of the sand and the borehole wall brings difficulty for the migration of sand also in increase.
Summary of the invention
The embodiment of the invention provides a kind of horizontal well sand flushing device, to solve the horizontal well sand washing problem that serious restriction horizontal well technology is used.
For solving the problems of the technologies described above, the invention provides a kind of horizontal well sand flushing device, the down-hole string of described horizontal well sand flushing device is a concentric double pipe sand washing tubing string, described concentric double pipe sand washing tubing string is divided into top Vertical Well section part and lower horizontal well section part, comprises outer tubing string 4 and internal layer tubing string 5; Wherein, described top Vertical Well section is partly established cross-channel sealer 3 to realize the runner conversion, import by sand clean out pipe 2 at described top Vertical Well section part sand washing power fluid, by being transformed into behind the described cross-channel sealer 3 in the annular channel between outer tubing string 4 and the internal layer tubing string 5, drive anti-circulation hydraulic water jet pump 7 work of described lower horizontal well section part, the mixed liquor that partly lacks power fluid and high sand-laden fluid in described lower horizontal well section is after described anti-circulation hydraulic water jet pump 7 sucks, by described internal layer tubing string 5 outputs, by being transformed into the annular space output between sand clean out pipe 2 and the bushing pipe 1 behind the described cross-channel sealer 3, realization is docked with ground routine sand washing flow process then.
Optionally, in one embodiment of this invention, described anti-circulation hydraulic water jet pump 7 comprises sand washing nozzle 9 and Pump Suction Nozzle 8.
Optionally, in one embodiment of this invention, be divided into two parts after under the described sand washing power fluid input well: a part sprays with the flow velocity forward more than the 100m/s through described sand washing nozzle 9, jet is fan-shaped diffusion in pit shaft, the horizontal segment sand setting is suspended in the described sand washing power fluid, forms the mixed liquor of described weary power fluid and high sand-laden fluid; Another part drives described anti-circulation hydraulic water jet pump 7 work, after Pump Suction Nozzle 8 suctions of the mixed liquor of described weary power fluid and high sand-laden fluid by described anti-circulation hydraulic water jet pump 7, and by described internal layer tubing string 5 outputs, and in shaft bottom formation negative pressure.
Optionally, in one embodiment of this invention, the mixed liquor of described weary power fluid and high sand-laden fluid is flow at high speed in described internal layer tubing string 5, and flow velocity reaches more than the 2m/s, and liquid flowing state changes turbulent flow into by laminar flow.
Technique scheme has following beneficial effect: because down-hole string adopts concentric double pipe sand washing tubing string, down-hole pump adopts anti-circulation hydraulic water jet pump, and design sand washing nozzle, and sand washing, sediment outflow are combined, and realizes the sand washing of horizontal well negative pressure.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of horizontal well sand flushing device of embodiment of the invention structural representation;
Fig. 2 is a kind of anti-circulation hydraulic water jet pump outer working tube schematic diagram of the embodiment of the invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
(1) the ground corollary equipment is identical with conventional sand washing.
(2) down-hole string adopts concentric double pipe sand washing tubing string.Whole tubing string is divided into top Vertical Well section part and lower horizontal well section part, establishes the cross-channel sealer to realize the runner conversion, realizes sand washing tubing string moving in pit shaft by the slip of cross-channel sealer in bushing pipe.Mixed liquor at partly weary power fluid of net horizontal section and high sand-laden fluid is exported by the inner layer pipe of concentric tube column, mixed liquor under water jet pump drives in cylindrical tube flow at high speed, more than the stream scooter 2m/s, liquid flowing state changes turbulent flow into by laminar flow, can thoroughly solve the problem of horizontal segment sand migration; Vertical Well section part high pressure sand washing power fluid by sand clean out pipe under the input well, height contains the sand mixed liquor by the output of the annular space between sand clean out pipe and the bushing pipe, realizes and the docking of ground routine sand washing flow process.
(3) down-hole pump adopts anti-circulation hydraulic water jet pump, and design sand washing nozzle, and sand washing, sediment outflow are combined, and realizes the sand washing of horizontal well negative pressure.Power fluid is divided into two parts after under the two-tube annular space input well: with the ejection of the flow velocity forward more than the 100m/s, jet is fully diffusion in pit shaft, makes the horizontal segment sand setting fully be suspended in the sand cleaning fluid through the sand washing nozzle for a part; Another part drives down-hole anti-circulation hydraulic water jet pump work high sand-laden fluid is discharged, and forms negative pressure in the shaft bottom.The mixed liquor of weary power fluid and high sand-laden fluid is after lower horizontal well section partly sucks by described anti-circulation hydraulic water jet pump, in the inner layer pipe of net horizontal section part, export pit shaft by concentric tube column, the internal layer liquid in pipe is flow at high speed under the Downhole jetting pump drives, more than the stream scooter 2m/s, can thoroughly solve the problem of net horizontal section sand migration.
As shown in Figure 1, be structural representation of the present invention, wherein: the 1-bushing pipe; The 2-sand clean out pipe; 3-cross-channel sealer; The outer tubing string of 4-; 5-internal layer tubing string; The 6-sleeve pipe; The anti-circulation hydraulic water jet pump of 7-; The 8-Pump Suction Nozzle; 9-sand washing nozzle.Further specify below in conjunction with accompanying drawing.
Referring to Fig. 1, high pressure sand washing power fluid is by under the input wells in the sand clean out pipe 2 of Vertical Well section part, is transformed in the annular channel between outer tubing string 4 and the internal layer tubing string 5 by cross-channel sealer 3, drives the anti-circulation hydraulic water jet pump 7 in down-hole and works; The mixed liquor of weary power fluid and high sand-laden fluid is by internal layer tubing string 5 outputs of net horizontal section part, mixed liquor under anti-circulation hydraulic water jet pump 7 drives in cylindrical tube flow at high speed, more than the stream scooter 2m/s, can thoroughly solve the problem of horizontal segment sand migration, afterwards behind 3 conversion runners, by the output of the annular space between bushing pipe 1 and the sand clean out pipe 2, realization is docked with ground routine sand washing flow process.
Anti-circulation hydraulic water jet pump 7 is adopted in the down-hole, if sand washing nozzle 9, as shown in Figure 2, it is a kind of anti-circulation hydraulic water jet pump outer working tube schematic diagram of the embodiment of the invention, power fluid is divided into two parts after under the two-tube annular space input well: a part sprays with the flow velocity forward more than the 100m/s through sand washing nozzle 9, jet is fan-shaped diffusion in pit shaft, make the horizontal segment sand setting fully be suspended in the sand cleaning fluid; Another part drives 7 work of Downhole jetting pump through the hydraulic jet pump nozzle high sand-laden fluid is discharged, and forms negative pressure in the shaft bottom.
Technique scheme of the present invention has following beneficial effect: (1) can realize the negative pressure sand washing of conventional sand output well.(2) sand washing, sediment outflow combine, and the negative pressure sand washing of the horizontal well of can realizing shaking out thoroughly solves the horizontal well sand washing of shaking out, shaft bottom sand setting cleaning problem, and effectively avoids the shaft bottom sand setting to enter the stratum.
The above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is the specific embodiment of the present invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. horizontal well sand flushing device, it is characterized in that, the down-hole string of described horizontal well sand flushing device is a concentric double pipe sand washing tubing string, and described concentric double pipe sand washing tubing string is divided into top Vertical Well section part and lower horizontal well section part, comprises outer tubing string (4) and internal layer tubing string (5); Wherein, described top Vertical Well section is partly established cross-channel sealer (3) to realize the runner conversion, import by sand clean out pipe (2) at described top Vertical Well section part sand washing power fluid, by being transformed into behind the described cross-channel sealer (3) in the annular channel between outer tubing string (4) and the internal layer tubing string (5), drive anti-circulation hydraulic water jet pump (7) work of described lower horizontal well section part, partly lack the mixed liquor of power fluid and high sand-laden fluid after described anti-circulation hydraulic water jet pump (7) sucks in described lower horizontal well section, export by described internal layer tubing string (5), by being transformed into the annular space output between sand clean out pipe (2) and the bushing pipe (1) behind the described cross-channel sealer (3), realization is docked with ground routine sand washing flow process then.
2. horizontal well sand flushing device according to claim 1 is characterized in that described anti-circulation hydraulic water jet pump (7) comprises sand washing nozzle (9) and Pump Suction Nozzle (8).
3. horizontal well sand flushing device according to claim 1, it is characterized in that, be divided into two parts after under the described sand washing power fluid input well: a part sprays with the flow velocity forward more than the 100m/s through described sand washing nozzle (9), jet is fan-shaped diffusion in pit shaft, the horizontal segment sand setting is suspended in the described sand washing power fluid, forms the mixed liquor of described weary power fluid and high sand-laden fluid; Another part drives described anti-circulation hydraulic water jet pump (7) work, after Pump Suction Nozzle (8) suction of the mixed liquor of described weary power fluid and high sand-laden fluid by described anti-circulation hydraulic water jet pump (7), by described internal layer tubing string (5) output, and in shaft bottom formation negative pressure.
4. horizontal well sand flushing device according to claim 1 is characterized in that the mixed liquor of described weary power fluid and high sand-laden fluid is flow at high speed in described internal layer tubing string (5), and flow velocity reaches more than the 2m/s, and liquid flowing state changes turbulent flow into by laminar flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105010317A CN101967962A (en) | 2010-10-09 | 2010-10-09 | Horizontal well sand washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105010317A CN101967962A (en) | 2010-10-09 | 2010-10-09 | Horizontal well sand washing device |
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| CN101967962A true CN101967962A (en) | 2011-02-09 |
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| CN2010105010317A Pending CN101967962A (en) | 2010-10-09 | 2010-10-09 | Horizontal well sand washing device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388465A (en) * | 2012-05-10 | 2013-11-13 | 中国石油大学(华东) | Downhole device using hydraulic jets of parallel tubes to flush pulverized coal |
| CN104329027A (en) * | 2014-11-03 | 2015-02-04 | 中国石油大学(北京) | Double-wall drill-pipe counterflush drilling jet pump drill bit |
| CN105041243A (en) * | 2015-07-14 | 2015-11-11 | 中国石油天然气股份有限公司 | Horizontal well concentric tubing continuous negative pressure sand pump process tubular column |
| CN106285523A (en) * | 2015-05-12 | 2017-01-04 | 中国石油天然气股份有限公司 | A kind of horizontal well negative pressure takes out sand device |
| CN106988693A (en) * | 2017-06-02 | 2017-07-28 | 韩克楚 | Concentric tube double-jet aeration negative pressure sand pumping device and method |
| CN110424912A (en) * | 2019-08-06 | 2019-11-08 | 安东柏林石油科技（北京）有限公司 | Method, the row's of returning service unit and the completion structure of tubing string replacement filling layer are not changed |
| CN110847824A (en) * | 2019-11-27 | 2020-02-28 | 吉林大学 | Sand stratum pressure-vaccum immersed tube becomes well construction equipment |
| CN112709543A (en) * | 2019-10-25 | 2021-04-27 | 中国石油天然气股份有限公司 | Horizontal well dragging and restraining type sand washing pipe column |
| CN114198036A (en) * | 2021-11-29 | 2022-03-18 | 中海石油(中国)有限公司 | Flushing head, negative pressure sand flushing device with same and use method of negative pressure sand flushing device |
| CN114941510A (en) * | 2022-06-17 | 2022-08-26 | 程显达 | Circulation unblocking sand fishing process system |
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| US4744420A (en) * | 1987-07-22 | 1988-05-17 | Atlantic Richfield Company | Wellbore cleanout apparatus and method |
| CN101144375A (en) * | 2007-10-17 | 2008-03-19 | 大庆油田有限责任公司 | Horizontal well continuous sand flushing device |
| CN201215008Y (en) * | 2008-05-09 | 2009-04-01 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Continuous tube liquid carrying and eyelet shunt simulating device in horizontal well bore |
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Patent Citations (3)
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| US4744420A (en) * | 1987-07-22 | 1988-05-17 | Atlantic Richfield Company | Wellbore cleanout apparatus and method |
| CN101144375A (en) * | 2007-10-17 | 2008-03-19 | 大庆油田有限责任公司 | Horizontal well continuous sand flushing device |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388465A (en) * | 2012-05-10 | 2013-11-13 | 中国石油大学(华东) | Downhole device using hydraulic jets of parallel tubes to flush pulverized coal |
| CN104329027A (en) * | 2014-11-03 | 2015-02-04 | 中国石油大学(北京) | Double-wall drill-pipe counterflush drilling jet pump drill bit |
| CN106285523A (en) * | 2015-05-12 | 2017-01-04 | 中国石油天然气股份有限公司 | A kind of horizontal well negative pressure takes out sand device |
| CN105041243A (en) * | 2015-07-14 | 2015-11-11 | 中国石油天然气股份有限公司 | Horizontal well concentric tubing continuous negative pressure sand pump process tubular column |
| CN105041243B (en) * | 2015-07-14 | 2017-08-04 | 中国石油天然气股份有限公司 | A kind of horizontal well concentric oil tubes continuous negative pressure takes out sand process pipe string |
| CN106988693A (en) * | 2017-06-02 | 2017-07-28 | 韩克楚 | Concentric tube double-jet aeration negative pressure sand pumping device and method |
| CN110424912A (en) * | 2019-08-06 | 2019-11-08 | 安东柏林石油科技（北京）有限公司 | Method, the row's of returning service unit and the completion structure of tubing string replacement filling layer are not changed |
| CN112709543A (en) * | 2019-10-25 | 2021-04-27 | 中国石油天然气股份有限公司 | Horizontal well dragging and restraining type sand washing pipe column |
| CN110847824A (en) * | 2019-11-27 | 2020-02-28 | 吉林大学 | Sand stratum pressure-vaccum immersed tube becomes well construction equipment |
| CN110847824B (en) * | 2019-11-27 | 2024-06-11 | 吉林大学 | Sand ground stratum blowing-sucking immersed tube well-forming construction device |
| CN114198036A (en) * | 2021-11-29 | 2022-03-18 | 中海石油(中国)有限公司 | Flushing head, negative pressure sand flushing device with same and use method of negative pressure sand flushing device |
| CN114198036B (en) * | 2021-11-29 | 2023-10-31 | 中海石油(中国)有限公司 | Flushing head, negative pressure sand flushing device with flushing head and use method of negative pressure sand flushing device |
| CN114941510A (en) * | 2022-06-17 | 2022-08-26 | 程显达 | Circulation unblocking sand fishing process system |
| CN114941510B (en) * | 2022-06-17 | 2024-03-22 | 盘锦博瑞石油工程有限公司 | Circulating blocking-removing sand-fishing process system |
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Application publication date: 20110209 |