CN102268963A - Basement rock fractured formation mixed drilling well completion process - Google Patents
Basement rock fractured formation mixed drilling well completion process Download PDFInfo
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- CN102268963A CN102268963A CN201110167688A CN201110167688A CN102268963A CN 102268963 A CN102268963 A CN 102268963A CN 201110167688 A CN201110167688 A CN 201110167688A CN 201110167688 A CN201110167688 A CN 201110167688A CN 102268963 A CN102268963 A CN 102268963A
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Abstract
The invention discloses a basement rock fractured formation mixed drilling well completion process. The process comprises the following process steps of: (1) drilling at a certain depth from an upper part loose layer to a basement rock layer by a mud positive circulation process, inserting a surface casing after the drilling, and fixedly sealing by using cement; (2) drilling the basement rock layer by an air downhole hammer reverse circulation process; (3) after a water-bearing layer is drilled, drilling convertibly by a gas lift reverse circulation process until a target layer is reached when drilling efficiency is influenced by back pressure, which is generated by a water column in a hole, on the downhole hammer; (4) washing a well by acidification; (5) washing the well by using a piston; (6) washing the well by using air; and (7) pumping water by using a water pump to complete the well, namely putting a submersible pump down to pump the water after the process that the well is washed by the air is finished until a water pumping test is finished. The invention has the advantages that: 1, dry holes are avoided or reduced, and construction risks are reduced; 2, a well construction cycle is shortened, unnecessary investment is reduced, and production cost is reduced; 3, mud is not used, fresh water resources are saved, and environment pollution caused by mud construction or emission is prevented; and 4, all fractures are changed into water catchment channels to the maximum extent to realize the maximum water yield of a single hole.
Description
Technical field
The present invention relates to a kind of drilling technology, well drilling technology is crept in the mixing of especially a kind of bedrock fracture stratum.
Background technology
The aquifer lithology of bedrock fracture water is based on intrusive rock class, lava, volcano lava, and underground water is composed the fracture zone of fracture that exists joint, structural fracture, weathering fissures and separation fracture to grow.2～3 millimeters of general crack width, 10～20 millimeters of big persons, the surplus rice of long number rice to ten, underground water are enriched in north-south, northwest (NW) relatively in an opening property or the property a turned round crack, and based on diving, there is the veiny artesian water fracture zone of fracture part.The watery inequality, water yield poorness, general 0.008～0.4 liter/second of spring flow, people's well yield 3～12 ton per days, drilling well single hole water yield 3～200 ton per days.
When utilizing the construction of conventional drilling technology, because it is relevant with shear force that mud carries drilling cuttings ability and its viscosity (the high more mud cake obstruction of viscosity is serious more), it is broken often to cause drilling cuttings to repeat in the shaft bottom, the part drilling cuttings can be ground in the borehole wall crack when repeating fragmentation, form artificial the obstruction, influence water yield.In addition, swell soil in the mud or clay particle usually are penetrated in the bedrock fracture, form hard mud cake and also can stop up the crack under differential pressure action.
Originally the crack is less on the bedrock fracture stratum, and water yield poorness is usually brought out mud and drilling cuttings again and stopped up in drilling process.Long because of the common process drilling period again, Cheng Jinghou drilling cuttings, mud cake and charges are difficult for coming out, and cause the less or anhydrous dry hole that becomes of single hole water yield, make drilling well lose meaning.For avoiding stopping up the less or anhydrous result of the water yield that causes, therefore, study a kind of crack of avoiding artificially stopping up, also to as much as possible strengthen the bedrock fracture stratum mixing of the permeability in crack simultaneously and creep into well drilling technology, be the present technical issues that need to address.
Summary of the invention
Technical problem to be solved by this invention provides the mixing of a kind of bedrock fracture stratum and creeps into well drilling technology.
The technical scheme that the present invention solves its technical problem is:
Well drilling technology is crept in the mixing of bedrock fracture stratum, its processing step is: 1. top unconsolidated formation to horizon d certain depth uses the mud normal circulation technology to creep into, be lowered to surface pipe after the boring and use cement sealing, 2. horizon d uses air latent drift reverse circular technique to creep into, 3. after being drilled into the aquifer, when water column influences drilling efficiency to down-the-hole hammer generation back pressure to the hole, using the gaslift reverse circular technique instead creeps into, up to target zone, 4. acidizing flushing, 5. piston well-flushing, 6. air well-flushing, 7. the water pump completion of drawing water, promptly the air well-flushing descends submersible pump to draw water at once after finishing, till pumping test is finished.
Preferably, after described acidizing flushing is the drilling well end-of-job, carry out electrical measurement earlier and declare layer, determine the position, crack of target zone to calculate the hydrochloric acid consumption then according to electrical measurement result and the data of sieving residue log, determine concentration of hydrochloric acid, re-use the acid of mud infusion, annotate the static certain hour in acid back, make hydrochloric acid and gapfiller that chemical reaction fully take place, decompose or softening filler, inject in the hole from the aperture then and the clear water of hydrochloric acid content with volume.
Preferably, to annotate earlier when annotating acid under the sour drilling tool at the bottom of the hole, acid tube line seal is annotated in water filling pressure testing inspection, begin water filling then, whether measure injecting clear water amount and aperture, to rout up the water yield consistent, if rout up the water yield and inject disposable notes acid at the bottom of the clear water amount employing hole, if it is inconsistent, employing first layer position, crack at the bottom of the hole begins upwards to annotate acid respectively in each layer position, crack successively, after notes acid finishes, proposes drilling tool in the hole.
Preferably, concentration of hydrochloric acid is 15%～30%, and concentration of hydrochloric acid is generally about 20%, can repeatedly annotate acid or strengthen concentration of hydrochloric acid if filler is more in the crack, but concentration can not surpass 30%, and be 4～8 hours quiescent time.
Preferably, described piston well-flushing has promptly been annotated behind the clear water lower piston in the hole, when the piston depth of setting guarantees to draw piston on the piston starting point below hydrostatic level, draw piston continuously or intermittently draw piston all can, the piston rising or falling speed is 1～3 meter per second, draws the piston cumulative time to be not less than 12 hours.
Preferably, the piston depth of setting is following 30 meters～50 meters an of hydrostatic level.
Preferably, described air well-flushing is promptly after the piston well-flushing finishes, employing is lowered to common drilling tool air compressor machine well-flushing or is lowered to the both arms drilling tool and the anti-circulation well cleanup of common drilling tool employing gaslift, less Kong Zhongke adopts foam blocking to cooperate the air well-flushing in the water yield, to form big suction force, it is principle that the well-flushing duration reaches " water is clear husky clean " with the aperture water outlet.
Know-why of the present invention:
Bedrock fracture water is composed the fracture zone of fracture that exists joint, structural fracture, weathering fissures and separation fracture to grow.2～3 millimeters of general crack width, 10～20 millimeters of big persons, the surplus rice of long number rice to ten, watery inequality, water yield poorness.Some gapfillers of filling usually in the crack, influence or stop up the charge for remittance passage causes water yield of well less.
Originally the crack is less on the bedrock fracture stratum, water yield poorness, when utilizing the construction of conventional drilling technology, usually bring out mud and drilling cuttings obstruction, long because of the common process drilling period again, Cheng Jinghou drilling cuttings, mud cake and charges are difficult for coming out, cause the less or anhydrous dry hole that becomes of single hole water yield, make drilling well lose meaning.For avoiding stopping up the less or anhydrous result of the water yield that causes, have only the novel drilling process of research one cover, avoid artificially stopping up the crack, also to as much as possible strengthen the permeability in crack simultaneously.
Method is exactly: the anti-blocking yield-increasing technology of bedrock fracture stratum well (adopt the air reverse circulation drilling, get into acidizing flushing behind the target zone, piston well-flushing, the anti-circulation well cleanup of gaslift or air compressor machine well-flushing).
Adopt the air reverse circulation drilling, can avoid mud cake to stop up; At the bottom of adopting the air reverse circulation drilling can also guarantee that drilling cuttings leaves the hole in the very first time, avoid the repetition fragmentation that the part drilling cuttings is ground in the borehole wall crack; Adopt the air reverse circulation drilling can also wash, carry out the charges in the crack, to increase the crack water permeable area.Make every crack all become the charge for remittance passage to greatest extent, to realize the single hole max water yield, reduce construction risk, reduce unnecessary investment, freshwater resources are saved in the environment pollution of avoiding mud to cause.
Acidizing flushing is the effective measures of volume increase, and particularly the carbonate strata effect is very remarkable.Utilize the chemical action of hydrochloric acid, form a kind of extension crack and strengthen the crack, to reach the purpose that increases water yield to stratum and gapfiller.Acidizing flushing should be in conjunction with water filling work better effects if.
The piston well-flushing is the more creviced formation of the effective measures of getting through the crack passage, particularly filler.The piston well-flushing can be with the filler in the crack or the drilling cuttings fallen in the crack when creeping into release, to get through the purpose that the crack passage reaches increases water yield.
The anti-circulation well cleanup of gaslift, air compressor machine well-flushing can be discharged wellhole with the sediment in the boring, to guarantee effective drilling depth, avoid influencing water yield.
Anti-blocking yield-increasing technology points for attention of bedrock fracture formation water and technical essential:
1. top unconsolidated formation or unconformable horizon d must be lowered to surface pipe or pump chamber pipe, and fixed with cement paste.
2. the reverse circulation drilling of air latent drift can only be in no water hole section or the stratum use that goes out the low amounts of water section.If the stratum water yield is bigger, anti-circulation can not be discharged to water outlet outside the hole again, and when down-the-hole hammer certain altitude was buried in hole inner product water logging, down-the-hole hammer operating efficiency reduced, and is lower than 2 meters/hour when down-the-hole hammer drill advances efficient, pull out of hole to use the gaslift reverse circular technique instead and continue to creep into.
3. gaslift reverse circulation drilling, the sinking ratio of gas-water mixer can not be less than 1/5(sinking ratio: refer to that gas-water mixer imbeds under water the degree of depth and gas-water mixer exports distance to air water tap top ratio, it is bigger than more to sink, and it is big more that generation pressure reduction forms reverse circulating ability).In time in the hole, recharge clear water, make the aperture water level steady, guarantee bigger sinking ratio.
Gas-water mixer is generally 3～4 times of gas-water mixer submersible depth with the drilling tool length down to drill bit, generally is no more than 7 times.
4. acidizing flushing.Notes acid amount is that 2 times target zone hole segment body is long-pending.
Calculate hydrochloric acid consumption: Q=r
2Π 2H,
Q in the formula---hydrochloric acid content (m3)
R---boring radius (m)
Π---pi
H---need to annotate sour hole segment length (m)
Determine concentration of hydrochloric acid.For guaranteeing the acid of safety notes, concentration of hydrochloric acid is generally about 20%, can repeatedly annotate acid or strengthen concentration of hydrochloric acid if filler is more in the crack, but concentration can not surpass 30%.
Use the acid of mud infusion, will annotate earlier sour drilling tool (or oil pipe) under at the bottom of the hole, water filling pressure testing (when pressure test pressure should be higher than replacement hydrochloric acid 50% of pressure), inspection notes acid tube line seal.Begin water filling then, whether measure injecting clear water amount and aperture, to rout up the water yield consistent.If inconsistent, annotate that acid is can not be at the bottom of the hole disposable has lived, should at the bottom of the hole, begin to inject hydrochloric acid in first layer position, crack, upwards annotate acid respectively successively in each layer position, crack.
After annotating the acid end, drilling tool (or oil pipe) in the hole is proposed, static 4～8 hours, make hydrochloric acid and gapfiller that chemical reaction fully take place, decompose or softening filler.Inject in the hole from the aperture then and the clear water of hydrochloric acid content with volume.Annotated behind the clear water lower piston in the hole.
5, piston well-flushing.The piston depth of setting is 30 meters～50 meters (starting point gets final product below hydrostatic level on the piston when drawing piston) below hydrostatic level.The piston rising or falling speed is 1～3 meter per second.Draw the piston cumulative time to be not less than 12 hours.
6, the anti-circulation well cleanup of gaslift, air compressor machine well-flushing.Adopt the anti-circulation well cleanup of gaslift, the drilling tool water inlet will be positioned at the crack layer, and from going up most under the course of crack well-flushing successively, till cleaning at the bottom of the hole.
Be lowered to common drilling tool air compressor machine well-flushing, the drilling tool depth of setting is determined according to the air compressor machine ability to bear, turns over the air water post as long as can form, and produces suction force and gets final product.Less Kong Zhongke adopts foam blocking to cooperate the air well-flushing in the water yield, has formed big suction force.It is principle that the well-flushing duration reaches " water is clear husky clean " with the aperture water outlet.
The anti-circulation well cleanup of gaslift, air compressor machine well-flushing can be discharged wellhole with the sediment in the boring, to guarantee effective drilling depth, avoid influencing water yield.
Compared with prior art, have the following advantages:
1, avoids or reduce the appearance of dry hole, reduce construction risk.
2, shorten well construction period, reduce unnecessary investment, reduce production costs.
3, do not use mud, save freshwater resources, the environment pollution of avoiding mud construction or discharging to cause.
4, make every crack all become the charge for remittance passage to greatest extent, to realize the single hole max water yield.
The specific embodiment
Well drilling technology is crept in the mixing of bedrock fracture stratum, its processing step is: 1. top unconsolidated formation to horizon d certain depth uses the mud normal circulation technology to creep into, be lowered to surface pipe after the boring and use cement sealing, 2. horizon d uses air latent drift reverse circular technique to creep into, 3. after being drilled into the aquifer, when water column influences drilling efficiency to down-the-hole hammer generation back pressure to the hole, using the gaslift reverse circular technique instead creeps into, up to target zone, 4. acidizing flushing, 5. piston well-flushing, 6. air well-flushing, 7. the water pump completion of drawing water, promptly the air well-flushing descends submersible pump to draw water at once after finishing, till pumping test is finished.
After described acidizing flushing is the drilling well end-of-job, carry out electrical measurement earlier and declare layer, determine the position, crack of target zone according to electrical measurement result and the data of sieving residue log, calculate the hydrochloric acid consumption then, determine concentration of hydrochloric acid, re-use the acid of mud infusion, annotate the static certain hour in acid back, make hydrochloric acid and gapfiller that chemical reaction fully take place, decompose or softening filler, inject in the hole from the aperture then and the clear water of hydrochloric acid content with volume.
To annotate earlier when annotating acid under the sour drilling tool at the bottom of the hole, acid tube line seal is annotated in water filling pressure testing inspection, begin water filling then, whether measure injecting clear water amount and aperture, to rout up the water yield consistent, as if routing up the water yield and disposable notes acid at the bottom of the injection clear water amount employing hole, if inconsistent, employing first layer position, crack at the bottom of the hole begins upwards to annotate acid respectively in each layer position, crack successively, after annotating the acid end, drilling tool in the hole is proposed.
Concentration of hydrochloric acid is 15%～30%, and concentration of hydrochloric acid is generally about 20%, can repeatedly annotate acid or strengthen concentration of hydrochloric acid if filler is more in the crack, but concentration can not surpass 30%, and be 4～8 hours quiescent time.
Described piston well-flushing has promptly been annotated behind the clear water lower piston in the hole, when the piston depth of setting guarantees to draw piston on the piston starting point below hydrostatic level, draw piston continuously or intermittently draw piston all can, the piston rising or falling speed is 1～3 meter per second, draws the piston cumulative time to be not less than 12 hours.
The piston depth of setting is following 30 meters～50 meters an of hydrostatic level.
Described air well-flushing is promptly after the piston well-flushing finishes, employing is lowered to common drilling tool air compressor machine well-flushing or is lowered to the both arms drilling tool and the anti-circulation well cleanup of common drilling tool employing gaslift, less Kong Zhongke adopts foam blocking to cooperate the air well-flushing in the water yield, to form big suction force, it is principle that the well-flushing duration reaches " water is clear husky clean " with the aperture water outlet.
Claims (7)
1. well drilling technology is crept in the mixing of bedrock fracture stratum, it is characterized in that: its processing step is: 1. top unconsolidated formation to horizon d certain depth uses the mud normal circulation technology to creep into, be lowered to surface pipe after the boring and use cement sealing, 2. horizon d uses air latent drift reverse circular technique to creep into, 3. be drilled into the aquifer after, when water column produces back pressure and influences drilling efficiency the down-the-hole hammer to the hole, using the gaslift reverse circular technique instead creeps into, up to target zone, 4. acidizing flushing
The piston well-flushing,
The air well-flushing,
The water pump completion of drawing water, promptly the air well-flushing descends submersible pump to draw water at once after finishing, till pumping test is finished.
2. well drilling technology is crept in the mixing of bedrock fracture according to claim 1 stratum, it is characterized in that: after described acidizing flushing is the drilling well end-of-job, carry out electrical measurement earlier and declare layer, determine the position, crack of target zone according to electrical measurement result and the data of sieving residue log, calculate the hydrochloric acid consumption then, determine concentration of hydrochloric acid, re-use the acid of mud infusion, annotate the static certain hour in acid back, make hydrochloric acid and gapfiller that chemical reaction fully take place, decompose or softening filler, inject in the hole from the aperture then and the clear water of hydrochloric acid content with volume.
3. well drilling technology is crept in the mixing of bedrock fracture according to claim 2 stratum, it is characterized in that: will annotate earlier when annotating acid under the sour drilling tool at the bottom of the hole, acid tube line seal is annotated in water filling pressure testing inspection, begin water filling then, whether measure injecting clear water amount and aperture, to rout up the water yield consistent, if rout up the water yield and disposable notes acid at the bottom of the injection clear water amount employing hole, if it is inconsistent, employing first layer position, crack at the bottom of the hole begins upwards to annotate acid respectively in each layer position, crack successively, after annotating the acid end, drilling tool in the hole is proposed.
4. well drilling technology is crept in the mixing of bedrock fracture according to claim 2 stratum, it is characterized in that: concentration of hydrochloric acid is 15%～30%, concentration of hydrochloric acid is generally about 20%, can repeatedly annotate acid or strengthen concentration of hydrochloric acid if filler is more in the crack, but concentration can not surpass 30%, and be 4～8 hours quiescent time.
5. well drilling technology is crept in the mixing of bedrock fracture according to claim 2 stratum, it is characterized in that: described piston well-flushing has promptly been annotated behind the clear water lower piston in the hole, when the piston depth of setting guarantees to draw piston on the piston starting point below hydrostatic level, draw piston continuously or intermittently draw piston all can, the piston rising or falling speed is 1～3 meter per second, draws the piston cumulative time to be not less than 12 hours.
6. well drilling technology is crept in the mixing of bedrock fracture according to claim 5 stratum, it is characterized in that: the piston depth of setting is following 30 meters～50 meters an of hydrostatic level.
7. well drilling technology is crept in the mixing of bedrock fracture according to claim 1 stratum, it is characterized in that: described air well-flushing is promptly after the piston well-flushing finishes, employing is lowered to common drilling tool air compressor machine well-flushing or is lowered to the both arms drilling tool and the anti-circulation well cleanup of common drilling tool employing gaslift, less Kong Zhongke adopts foam blocking to cooperate the air well-flushing in the water yield, to form big suction force, it is principle that the well-flushing duration reaches " water is clear husky clean " with the aperture water outlet.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161405A (en) * | 2013-03-03 | 2013-06-19 | 中国矿业大学 | Sleeve tube isolating layer shuttered zone method of down hole detecting and placing high pressure karst water drilling construction for mine |
| CN103867119A (en) * | 2014-02-27 | 2014-06-18 | 中国石油天然气股份有限公司 | Coal reservoir well completion renovation method |
| US10337249B2 (en) | 2017-02-04 | 2019-07-02 | Jason A Hatfield | Drilling wells with air |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4237974A (en) * | 1978-05-09 | 1980-12-09 | The Dow Chemical Company | Method of controlling fluid loss in acidizing treatment of a subterranean formation |
| US20030164252A1 (en) * | 2002-02-26 | 2003-09-04 | Rae Philip J. | Chemically enhanced drilling methods |
| US20090151938A1 (en) * | 2007-12-18 | 2009-06-18 | Don Conkle | Stimulation through fracturing while drilling |
| CN101718184A (en) * | 2009-12-15 | 2010-06-02 | 中国石油大学(华东) | Foamed acid washing technological method for horizontal well |
| CN101929309A (en) * | 2010-08-16 | 2010-12-29 | 邯郸市伟业地热开发有限公司 | Gas lift reverse circulation drilling process |
-
2011
- 2011-06-21 CN CN 201110167688 patent/CN102268963B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4237974A (en) * | 1978-05-09 | 1980-12-09 | The Dow Chemical Company | Method of controlling fluid loss in acidizing treatment of a subterranean formation |
| US20030164252A1 (en) * | 2002-02-26 | 2003-09-04 | Rae Philip J. | Chemically enhanced drilling methods |
| US20090151938A1 (en) * | 2007-12-18 | 2009-06-18 | Don Conkle | Stimulation through fracturing while drilling |
| CN101718184A (en) * | 2009-12-15 | 2010-06-02 | 中国石油大学(华东) | Foamed acid washing technological method for horizontal well |
| CN101929309A (en) * | 2010-08-16 | 2010-12-29 | 邯郸市伟业地热开发有限公司 | Gas lift reverse circulation drilling process |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161405A (en) * | 2013-03-03 | 2013-06-19 | 中国矿业大学 | Sleeve tube isolating layer shuttered zone method of down hole detecting and placing high pressure karst water drilling construction for mine |
| CN103161405B (en) * | 2013-03-03 | 2015-07-29 | 中国矿业大学 | Mine underground visits the casing off stratum crushing band method of putting high pressure karst water drilling construction |
| CN103867119A (en) * | 2014-02-27 | 2014-06-18 | 中国石油天然气股份有限公司 | Coal reservoir well completion renovation method |
| US10337249B2 (en) | 2017-02-04 | 2019-07-02 | Jason A Hatfield | Drilling wells with air |
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| CN102268963B (en) | 2013-05-22 |
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Denomination of invention: Hybrid drilling technology for bedrock fracture formation Effective date of registration: 20220920 Granted publication date: 20130522 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. |
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