CN101929328A - Dynamic water filter material throwing technological method of geothermal well - Google Patents
Dynamic water filter material throwing technological method of geothermal well Download PDFInfo
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- CN101929328A CN101929328A CN 201010253619 CN201010253619A CN101929328A CN 101929328 A CN101929328 A CN 101929328A CN 201010253619 CN201010253619 CN 201010253619 CN 201010253619 A CN201010253619 A CN 201010253619A CN 101929328 A CN101929328 A CN 101929328A
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- filtrate
- well
- aquifer
- filter material
- flushing
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 title claims abstract description 19
- 239000013049 sediment Substances 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 239000000706 filtrate Substances 0.000 claims description 61
- 238000011010 flushing procedure Methods 0.000 claims description 38
- 239000004576 sand Substances 0.000 claims description 21
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000013461 design Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000000053 physical method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The invention discloses a dynamic water filter material throwing technological method of a geothermal well, comprising the following technological steps of, firstly, well diameter measurement; secondly, aquifer height determination; thirdly, filter material amount calculation; fourthly, hole clearing; fifthly, slurry changing; sixthly, tube lowering; seventhly, water filter pipe washing; and eighthly, filter material throwing. The dynamic water filter material throwing technological method of the geothermal well is particularly suitable for filter material throwing of the geothermal well in a region with loose cementation, unstable formation and high sediment concentration in water.
Description
Technical field
The present invention relates to a kind of boring method, especially a kind of dynamic water filter material throwing technological method of geothermal well.The filtrate that is specially adapted to the geothermal well in the area that sand content is high in loose cementation, stratum instability, the water is thrown in.
Background technology
Because of the degree of depth major part of geothermal well between 1000m-3000m, be difficult to filtrate thrown in conventional at present cast media method and put in place.Because of filtrate is thrown in not in place, GEOTHERMAL WATER between geothermal well wellhole and the well casing can flow freely, sand content height in the GEOTHERMAL WATER of being taken out, GEOTHERMAL WATER flows for a long time between wellhole and well casing and washes away and will drive the landwaste motion, destroyed the stability on stratum, the phenomenon of partial collapse can take place, and the groundwater abstraction time has been grown and can cause surface settlement.Thrown between the geothermal well wellhole of filtrate and the well casing by the filtrate filling, formed support frame, reduced the flow velocity of hot water simultaneously, it can only be penetrated in the well casing by filtrate, so played good ground, avoid the effect of surface settlement with permeability.Simultaneously, can also reduce the sand content in the GEOTHERMAL WATER that is extracted, reduce the wearing and tearing of ground installation, particularly the protection effect to submersible pump, desander and booster pump is obvious.In addition, for the high geothermal well of sand content in the water, it is more that the interior sand setting alluvial of well casing often takes place, and stopping up filter pipe gradually influences water yield of well, and the final outflow water amount is little of no value, well-flushing or well-digging again.Filtrate is thrown in the geothermal well that puts in place, and the filtrate filling bed can reduce the motion of sand and sand is tackled outside filter pipe, has played the life-span that has prolonged geothermal well when reducing sand content order ground, reduces overlapping investment.Therefore, designing a kind of dynamic water filter material throwing technological method of geothermal well that can accurately throw in filtrate, is the present technical issues that need to address.
Summary of the invention
Technical problem to be solved by this invention provides a kind of dynamic water filter material throwing technological method of geothermal well that can accurately throw in filtrate.
The technical scheme that the present invention solves its technical problem is:
Dynamic water filter material throwing technological method of geothermal well, its processing step is: 1. caliper logging, 2. the aquifer height is determined, and 3. the filtrate amount is calculated, and slurry is changed in 4. clear hole 5., 6. manages down, 7. filter pipe flushing, 8. filtrate is thrown in.
The concrete technical scheme that the present invention solves its technical problem is:
The size of hole diameter is promptly determined in caliper logging of the present invention with the physical measurement method, for calculating the filtrate amount, next step provides data, described aquifer height determines promptly to use the method for geophysical log, comprise and survey natural potential, resistivity, GR, sound wave, well temperature, hole deviation etc., determine the concrete height dimension in aquifer and non-aquifer itself and apart from the height dimension of well head, for pipe under next step provides data, described filtrate amount is calculated the consumption that promptly calculates filtrate, and its design formulas is: L=0.785 * (D
2-d
2) * h * k, wherein L-filtrate amount (m
3), D-wellhole internal diameter (m), d-well casing external diameter (m), h-aquifer height (m), the k-design factor, k ﹦ 1.10-1.25, the drilling cuttings in the wellhole is promptly removed in described clear hole, describedly change the viscosity that slurry promptly reduces drilling fluid, its method is evenly to add clear water by the circulating cycle in wellhole, described pipe is down promptly determined tube side case down according to the concrete height dimension in aquifer and non-aquifer itself and apart from the height dimension of well head, guarantee that filter pipe is corresponding with the aquifer, wall casing is corresponding with non-aquifer, described filter pipe flushing promptly pumps into flushing liquor in well casing, allow flushing liquor flow out from filter pipe, useless flushing liquor behind the flushing filter pipe upwards flow to the face of land along the annular space between the well casing and the borehole wall, its concrete grammar is for being lowered to earlier cleaning hose in well casing, the length of cleaning hose is as the criterion putting in the sand sediment pipe, sand sediment pipe is the wall casing that plays the effect of splendid attire sediment of least significant end, again cleaning hose is connected with the delivery port of slush pump, the water inlet pipe that puts in the flushing liquid pool is connected with the slush pump water inlet, and well head sealed, open slush pump then and begin flushing, after described filtrate is thrown in and is promptly treated to reach regulation and require from the concentration that flow to the flushing waste on the face of land between the well casing and the borehole wall, promptly begin uniform from well head, continual input filtrate, and in the filtrate launch process, do not stop to pump into of flushing liquor.
Concrete technological parameter of the present invention is:
The number range of D-d/2 of the present invention is 75-100mm.
The 4-6 that the particle diameter of filter medium mm of filtrate of the present invention equals water layer grains of sand footpaths mm doubly, it is 98% that the particle diameter of filter medium qualification rate requires, filtrate sphericity and circularity is all greater than 0.6, filtrate intensity 〉=5 grade, filtrate proportion 〉=1.50g/cm
3
The present invention begins to throw in filtrate when the concentration viscosity of the flushing waste that flow to the face of land between the well casing and the borehole wall is between 18s-20s.
The input speed of filtrate of the present invention is 3-3.5 m per hour
3
The amount of pumping into of flushing liquor of the present invention is 15-20m
3/ h.
Geothermal well moves water cast media technological work principle:
Even the sand bridge phenomenon that filtrate is concentrated occurs in the process of feeding intake, up flushing liquor just can break through sand bridge immediately, and sand bridge is broken through its filtrate of back will be continued to glide under action of gravity, extremely arrives at the bottom of the hole and sold stowing.
Compared with prior art, throw in filtrate with the inventive method, filtrate constitutes a filtrate filling bed in the annular space of the filter pipe and the borehole wall, thereby effectively solves the difficult problem that wellhole is easily caved in, the water outlet sand content is high under the weaker zone geological conditions.
Description of drawings
Accompanying drawing is a schematic diagram of the present invention.
Among the figure, 1 is slush pump, and 2 is cleaning hose, and 3 is the well pillar, and 4 is the borehole wall, and 5 is wall casing, and 6 is filter pipe, and 7 is the aquifer, and 8 is non-aquifer, and 9 is the filtrate packed layer, and 10 is filtrate.
The specific embodiment
Dynamic water filter material throwing technological method of geothermal well, its processing step is: 1. caliper logging, 2. the aquifer height is determined, and 3. the filtrate amount is calculated, and slurry is changed in 4. clear hole 5., 6. manages down, 7. filter pipe flushing, 8. filtrate is thrown in.
The size of hole diameter is promptly determined in described caliper logging with the physical measurement method, for calculating the filtrate amount, next step provides data, described aquifer height determines promptly to use the method for geophysical log, comprise and survey natural potential, resistivity, GR, sound wave, well temperature, hole deviation etc., determine the concrete height dimension in aquifer and non-aquifer itself and apart from the height dimension of well head, for pipe under next step provides data, described filtrate amount is calculated the consumption that promptly calculates filtrate, and its design formulas is: L=0.785 * (D
2-d
2) * h * k, wherein L-filtrate amount (m
3), D-wellhole internal diameter (m), d-well casing external diameter (m), h-aquifer height (m), the k-design factor, k ﹦ 1.10-1.25, the drilling cuttings in the wellhole is promptly removed in described clear hole, describedly change the viscosity that slurry promptly reduces drilling fluid, its method is evenly to add clear water by the circulating cycle in wellhole, described pipe is down promptly managed down according to the concrete height dimension in aquifer and non-aquifer itself and apart from the height dimension of well head, guarantee that filter pipe is corresponding with the aquifer, wall casing is corresponding with non-aquifer, described filter pipe flushing promptly pumps into flushing liquor in well casing, allow flushing liquor flow out from filter pipe, useless flushing liquor behind the flushing filter pipe upwards flow to the face of land along the annular space between the well casing and the borehole wall, its concrete grammar is for being lowered to earlier cleaning hose in well casing, the length of cleaning hose is as the criterion putting in the sand sediment pipe, sand sediment pipe is the wall casing that plays the effect of splendid attire sediment of least significant end, again cleaning hose is connected with the delivery port of slush pump, the water inlet pipe that puts in the flushing liquid pool is connected with the slush pump water inlet, and well head sealed, open slush pump then and begin flushing, after described filtrate is thrown in and is promptly treated to reach regulation and require from the concentration that flow to the flushing waste on the face of land between the well casing and the borehole wall, promptly begin uniform from well head, continual input filtrate, and in the filtrate launch process, do not stop to pump into of flushing liquor.
The number range of D-d/2 is 75-100mm.
The 4-6 that the particle diameter of filter medium mm of described filtrate equals water layer grains of sand footpaths mm doubly, it is 98% that the particle diameter of filter medium qualification rate requires, filtrate sphericity and circularity is all greater than 0.6, filtrate intensity 〉=5 grade, filtrate proportion 〉=1.50g/cm
3
When the concentration viscosity of the flushing waste that flow to the face of land between the well casing and the borehole wall is between 18s-20s, begin to throw in filtrate.
The input speed of filtrate is 3-3.5 m per hour
3
The amount of pumping into of flushing liquor is 15-20m
3/ h.
Claims (7)
1. dynamic water filter material throwing technological method of geothermal well, it is characterized in that: its processing step is: 1. caliper logging, 2. the aquifer height is determined, and 3. the filtrate amount is calculated, and slurry is changed in 4. clear hole 5., 6. pipe down, 7. filter pipe flushing, 8. filtrate is thrown in.
2. dynamic water filter material throwing technological method of geothermal well according to claim 1, it is characterized in that: the size of hole diameter is promptly determined in described caliper logging with the physical measurement method, described aquifer height determines promptly to use the method for geophysical log, comprise and survey natural potential, resistivity, GR, sound wave, well temperature, hole deviation etc., determine the concrete height dimension in aquifer and non-aquifer itself and apart from the height dimension of well head, described filtrate amount is calculated the consumption that promptly calculates filtrate, and its design formulas is: L=0.785 * (D
2-d
2) * h * k, wherein L-filtrate amount (m
3), D-wellhole internal diameter (m), d-well casing external diameter (m), h-aquifer height (m), the k-design factor, k ﹦ 1.10-1.25, the drilling cuttings in the wellhole is promptly removed in described clear hole, describedly change the viscosity that slurry promptly reduces drilling fluid, its method is evenly to add clear water by the circulating cycle in wellhole, described pipe is down promptly determined tube side case down according to the concrete height dimension in aquifer and non-aquifer itself and apart from the height dimension of well head, guarantee that filter pipe is corresponding with the aquifer, wall casing is corresponding with non-aquifer, described filter pipe flushing promptly pumps into flushing liquor in well casing, allow flushing liquor flow out from filter pipe, useless flushing liquor behind the flushing filter pipe upwards flow to the face of land along the annular space between the well casing and the borehole wall, its concrete grammar is for being lowered to earlier cleaning hose in well casing, the length of cleaning hose is as the criterion putting in the sand sediment pipe, sand sediment pipe is the wall casing that plays the effect of splendid attire sediment of least significant end, again cleaning hose is connected with the delivery port of slush pump, the water inlet pipe that puts in the flushing liquid pool is connected with the slush pump water inlet, and well head sealed, open slush pump then and begin flushing, after described filtrate is thrown in and is promptly treated to reach regulation and require from the concentration that flow to the flushing waste on the face of land between the well casing and the borehole wall, promptly begin uniform from well head, continual input filtrate, and in the filtrate launch process, do not stop to pump into of flushing liquor.
3. dynamic water filter material throwing technological method of geothermal well according to claim 2 is characterized in that: the number range of D-d/2 is 75-100mm.
4. dynamic water filter material throwing technological method of geothermal well according to claim 2, it is characterized in that: the particle diameter of filter medium mm of described filtrate equals 4-6 times of water layer grains of sand footpath mm, it is 98% that the particle diameter of filter medium qualification rate requires, filtrate sphericity and circularity are all greater than 0.6, filtrate intensity 〉=5 grade, filtrate proportion 〉=1.50g/cm
3
5. dynamic water filter material throwing technological method of geothermal well according to claim 2 is characterized in that: begin to throw in filtrate when the concentration viscosity of the flushing waste that flow to the face of land between the well casing and the borehole wall is between 18s-20s.
6. dynamic water filter material throwing technological method of geothermal well according to claim 2 is characterized in that: the input speed of filtrate is 3-3.5 m per hour
3
7. dynamic water filter material throwing technological method of geothermal well according to claim 2 is characterized in that: the amount of pumping into of flushing liquor is 15-20m
3/ h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102536195A CN101929328B (en) | 2010-08-16 | 2010-08-16 | Dynamic water filter material throwing technological method of geothermal well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102536195A CN101929328B (en) | 2010-08-16 | 2010-08-16 | Dynamic water filter material throwing technological method of geothermal well |
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| Publication Number | Publication Date |
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| CN101929328A true CN101929328A (en) | 2010-12-29 |
| CN101929328B CN101929328B (en) | 2011-08-10 |
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| CN2010102536195A Active CN101929328B (en) | 2010-08-16 | 2010-08-16 | Dynamic water filter material throwing technological method of geothermal well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622877A (en) * | 2021-09-06 | 2021-11-09 | 中国地质调查局水文地质环境地质调查中心 | Underground multistage filtering-precipitating device for loose sandstone heat storage geothermal exploitation well |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055218A (en) * | 1990-02-22 | 1991-10-09 | 安吉马奇·彼里 | A kind of equipment for completion of well |
| JP2000282020A (en) * | 1999-03-31 | 2000-10-10 | Terunaito:Kk | Slurry composition for excavation of geothermal well, and excavation of geothermal well |
| US6458198B1 (en) * | 1998-05-11 | 2002-10-01 | Schlumberger Technology Corporation | Cementing compositions and use of such compositions for cementing oil wells or the like |
| CN2856414Y (en) * | 2005-09-09 | 2007-01-10 | 天津大学 | Downhole level measurer for dynamic monitoring geothermal well |
| CN201050360Y (en) * | 2007-07-06 | 2008-04-23 | 刘金生 | Geothermal well water level observation device |
| CN101440706A (en) * | 2008-09-26 | 2009-05-27 | 天津大学 | Terrestrial heat downhole water level measuring system |
-
2010
- 2010-08-16 CN CN2010102536195A patent/CN101929328B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055218A (en) * | 1990-02-22 | 1991-10-09 | 安吉马奇·彼里 | A kind of equipment for completion of well |
| US6458198B1 (en) * | 1998-05-11 | 2002-10-01 | Schlumberger Technology Corporation | Cementing compositions and use of such compositions for cementing oil wells or the like |
| JP2000282020A (en) * | 1999-03-31 | 2000-10-10 | Terunaito:Kk | Slurry composition for excavation of geothermal well, and excavation of geothermal well |
| CN2856414Y (en) * | 2005-09-09 | 2007-01-10 | 天津大学 | Downhole level measurer for dynamic monitoring geothermal well |
| CN201050360Y (en) * | 2007-07-06 | 2008-04-23 | 刘金生 | Geothermal well water level observation device |
| CN101440706A (en) * | 2008-09-26 | 2009-05-27 | 天津大学 | Terrestrial heat downhole water level measuring system |
Non-Patent Citations (1)
| Title |
|---|
| 《中国煤田地质》 20061231 左明星等 定福庄地热试验井成井工艺研究 第18卷, 第6期 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622877A (en) * | 2021-09-06 | 2021-11-09 | 中国地质调查局水文地质环境地质调查中心 | Underground multistage filtering-precipitating device for loose sandstone heat storage geothermal exploitation well |
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| CN101929328B (en) | 2011-08-10 |
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Inventor after: Feng Hongxi Inventor after: Yin Wenxing Inventor before: Feng Hongxi Inventor before: Yin Wenxing |
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Denomination of invention: Dynamic water filter material throwing technological method of geothermal well Effective date of registration: 20121023 Granted publication date: 20110810 Pledgee: China Everbright Bank Handan branch Pledgor: HANDAN WEIYE GEOTHERMAL DEVELOPMENT CO.,LTD. Registration number: 2012990000625 |
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Denomination of invention: Dynamic water filter material throwing technological method of geothermal well Effective date of registration: 20151216 Granted publication date: 20110810 Pledgee: China Everbright Bank Handan branch Pledgor: HANDAN WEIYE GEOTHERMAL DEVELOPMENT CO.,LTD. Registration number: 2015990001115 |
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Denomination of invention: Technological method of moving water into filter material in geothermal well Effective date of registration: 20220920 Granted publication date: 20110810 Pledgee: Guangping County Rural Credit Cooperative Pledgor: HANDAN WEIYE GEOTHERMAL DEVELOPMENT CO.,LTD. Registration number: Y2022130000073 |
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Address after: 057651 North side of the middle section of Jin Guangyuan Road, Guangping County, Handan City, Hebei Province Patentee after: Hebei Weiye Geothermal New Energy Technology Co.,Ltd. Address before: 057650 South of Renmin Road East Section, Guangping County, Handan City, Hebei Province Patentee before: HANDAN WEIYE GEOTHERMAL DEVELOPMENT CO.,LTD. |