CN104449609A - Active pressure maintaining and hole sealing material for gas extraction drill hole and hole sealing process thereof - Google Patents
Active pressure maintaining and hole sealing material for gas extraction drill hole and hole sealing process thereof Download PDFInfo
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- CN104449609A CN104449609A CN201410609091.9A CN201410609091A CN104449609A CN 104449609 A CN104449609 A CN 104449609A CN 201410609091 A CN201410609091 A CN 201410609091A CN 104449609 A CN104449609 A CN 104449609A
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- hole
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- sealing material
- grouting
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses an active pressure maintaining and hole sealing material for a gas extraction drill hole and a hole sealing process thereof. The hole sealing material is prepared by the following steps: reasonably proportioning ordinary Portland cement and sulfoaluminum cement, and adding a proper amount of foaming agent and concrete admixture. According to repeated scientific experiments, induction, verification and summarization, a novel hole sealing material is researched, and the material has the characteristics of rapid hardening, early strength, high strength and high expansion rate and is a composite non-chemical grouting material. According to the hole sealing process disclosed by the invention, an active pressure maintaining mode is adopted, namely the novel hole sealing slurry is injected into a hole-sealing grouting chamber by virtue of a grouting pump, so that a certain organic hole-sealing pressure is maintained. Moreover, according to the expansibility of the novel hole sealing material, active pressurization of the hole-sealing grouting chamber is realized, high density and high anti-compression property of the hole-sealing entity section are further realized, and the reliability and success rate of the hole sealing technology are improved.
Description
Technical field
The invention belongs to coal mine gas extraction drill hole hole sealing technology field, relate to a kind of active pressurize sealing material and hole-sealing technology thereof of mash gas pumping drilling.
Background technology
At present, domestic and international existing hole-sealing technology and sealing material of a great variety, as hole packer sealing of hole, cement mortar sealing of hole with pressure, urethane cloth bag type sealing of hole and bag type paste injection hole sealing etc.
Gas drainage hole packer kind is many.Static pressure water injection type hole packer is with its tight stopping property, and reliable swelling property, is widely used in short-term sealing of hole or interim sealing of hole.But long-time sealing of hole has moisture and oozes out, and easy release, causes gas leakage, concerning impracticable the gas pumping hole of long-term extraction, and expensive.
In sand-cement slurry sealing of hole with pressure, sand-cement slurry setting rate is fast, and ultimate compression strength is large, and hole sealing depth can from Row sum-equal matrix, and cheap, cement grout can be pressed in the crack of drilling hole surrounding medium by sealing of hole with pressure, and sealing of hole is tight, and easy to operate, effect is better.But the contraction had in the process that thes cement solidifies to a certain degree, particularly when cement setting percentage is low add that dip angle of hole is less time, the segregation of cement and deposited phenomenon can be that bore inner forms " crescent moon " type cavity, affect sealing quality.
Urethane sealing of hole technical operation flow is simple, sealing of hole speed, and rate of expansion is large, and also have certain plugging action to coalmass crevasse, sealing of hole effect is better.But material reaction effect is subject to proportioning and ambient temperature effect comparatively large, and operating time and consumption are difficult to hold; Urethane is organic synthesis material, and its reaction process is comparatively large by moisture effects, and boring excess moisture can cause overreact, and bubble is excessive, forms foam, reduces stopping property; Polyurethane structural figure (amplifying 350 times) shows, and urethane forms a large amount of cavity after expanding, and has hole to link up, cause overall resistance to air loss bad between many adjacent cavitys; Urethane is hypertoxic organism, easily damages skin; Operative technique difficulty is large, and workman is more to urethane liquid touch opportunity, easily splashes on skin by liquid; Onsite application personnel are reflected with the borehole sealing cycle of polyurethane seal short, and sealing of hole one week rear negative pressure of suction is little, and extraction concentration is not high.
Bag type paste injection hole sealing operating process is simple, and sealing of hole speed, the abutment pressure of sealing of hole section to drill hole wall is large.But sealed borehole length is limited, require responsive to sealed borehole length and hole sealing depth.
Sealing material domestic at present mainly contains polyurethanes foam material and conventional cement mortar.Polyurethane material belongs to chemical classes injection material, and because operating process is simple, sealing of hole speed is fast, and rate of expansion is large, has certain plugging action and receive great welcome to coalmass crevasse.And be subject to the impact of a series of reasons such as temperature, moisture, ratio, more urethane extraction hole poor effect due to the expansion effect of polyurethane products.And sand-cement slurry sealing material belongs to non-chemically class injection material, because material is cheap, easy to operate, speed is fast, and hole sealing depth is longer, and slip casting also has certain plugging action to the crack of hole surrounding rock body, ultimate compression strength advantages of higher is still applied more in a lot of mining area in the whole nation, but the contraction had in process because the cement solidifies to a certain degree, particularly easily forms " crescent moon " type space at hole internal upper part when bore angle is less, affects sealing quality.
In multianalysis the respective pros and cons of urethane sealing of hole and sand-cement slurry sealing of hole and feature basis on, the present invention can to have above bi-material advantage separately comprehensively, both there is high solidity and the high compressive strength of sand-cement slurry, there is again the characteristic such as high rate of expansion and rapid reaction of urethane.
Summary of the invention
The object of this invention is to provide a kind of active pressurize sealing material and hole-sealing technology thereof of mash gas pumping drilling, application of the present invention, effectively can improve the reliability of shutoff mash gas pumping drilling.
The invention provides a kind of active pressurize sealing material of mash gas pumping drilling, this sealing material is characterised in that, described sealing material is choice for use cement-based gelling material, the ordinary Portland cement of 50%-90% and the aluminosulfate cement of about 10%-50% is about by massfraction, and add appropriate whipping agent and concrete admixture, it is made to reach the requirement of desirable sealing material, and the massfraction sum of each component is about 100%, wherein, described whipping agent is industrial aluminium powder, described mixed earth admixture is water reducer, dispersion agent or concrete intensifier.
Further, as preferably, the mass percentage of described ordinary Portland cement is 90%, 85%, 80%, 75%, 70%, 65%, 60%, 55% or 50%.
Further, as preferably, the mass percent of described sulphoaluminate cement clinker is 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45% or 50%.
Further, as preferably, described industrial aluminium powder and water ash mass ratio are 1: 65,2: 70,4: 70,6: 70,8: 75 or 10: 80.
Further, as preferably, the proportioning of described ordinary Portland cement and sulphoaluminate cement clinker is 5% ~ 15% time, and water cement ratio is about 60%.
In addition, present invention also offers a kind of hole-sealing technology utilizing the sealing material of this mash gas pumping drilling to carry out sealing of hole, it is characterized in that, this technique adopts initiatively protective voltage type hole-sealing technology, and Specific construction step is as follows:
The first step, first connects first gas pumping pipe and front end antipriming pipe in inserting and holing, then installs inner plug at gas pumping pipe jointing place, and fixing water injection pipe;
Second step: connect tail gas drainage tube successively, in the end outside plug is loaded onto in a gas pumping pipe junction, and fixing Grouting Pipe and vapor pipe;
3rd step: use water injection pipe water filling, after inside and outside plug expands, extracts water injection pipe out;
4th step: Grouting Pipe be connected with grouting pump, starts slip casting, when pressure is increased to about 1MPa, can stop slip casting;
5th step: fixed by orifice sealing with remaining sealing of hole material or cement, can timely grid-connected extraction;
6th step: extract Grouting Pipe and vapor pipe, cleans, for injection hole sealing is ready next time tool for grouting in looses such as grouting pump, Grouting Pipe, agitators.
The present invention is the sealing of hole entity section active boost that realized by the character of grouting pump and sealing material itself and effectively can keeps the sealing of hole mode of relative pressure and internal stress thereof, and the implementation of this technique first with end cap, sealing of hole entity section is isolated into closed space; With grouting pump sealing material injected sealing of hole section again and possess certain grouting pressure; The swelling property of recycling material itself realizes active boost; Still have microdilatancy phenomenon after material solidification, the drying shrinkage loss of material can be made up on the one hand, can also effectively keep relative pressure and internal stress on the other hand.
Principle of the present invention is that the grouting pressure by grouting pump improves the original pressure of sealing of hole medium, make it much larger than minimal-contact force value, and continue to increase the internal stress in Material Coagulating Process by the swelling property of sealing material self, the microdilatancy performance of adding the material later stage makes up stress relaxation in material drying shrinkage process and creep, make sealing of hole medium possess original pressure all the time, thus keep certain stopping property.
Compare existing hole-sealing technology, the invention has the advantages that and can retain original high solidity and high compressive strength advantage, and there is the due characteristics of sealing material such as certain swelling property, mobility and rapid solidification on this basis, this Novel sealing Porous materials is very applicable to grouting pump pumping, is the compound non-chemically class injection material with rapid hardening, early strong, high-strength, high rate of expansion.
Accompanying drawing explanation
Fig. 1 is the hole sealing structure schematic diagram of hole-sealing technology of the present invention;
In figure, each component names is as follows:
1-vapor pipe 2-water injection pipe 3-Grouting Pipe 4-cement section 5-gas pumping pipe 6-boring 7-plug 8-sealing material 9-gas pumping pipe connector 10-antipriming pipe.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
The invention provides a kind of active pressurize sealing material of mash gas pumping drilling, it is characterized in that, described sealing material is choice for use cement-based gelling material, the ordinary Portland cement of 50%-90% and the aluminosulfate cement of about 10%-50% is about by massfraction, and add appropriate whipping agent and concrete admixture, make it reach the requirement of desirable sealing material, and the massfraction sum of each component is about 100%.Wherein, described whipping agent is industrial aluminium powder, and described mixed earth admixture is water reducer, dispersion agent or concrete intensifier.
In the present embodiment, the mass percentage of ordinary Portland cement is 85%, and the mass percent of sulphoaluminate cement clinker is 10%, and all the other are whipping agent and concrete admixture, and industrial aluminium powder and water ash mass ratio are 1: 65.
Alternatively, the proportioning of ordinary Portland cement and sulphoaluminate cement clinker is 5% ~ 15% time, and water cement ratio is 60%.
As shown in Figure 1, plug 7 condenses in specific sealing of hole section to effectively control this Novel sealing Porous materials 8; Prevent the excessive guarantee sealing quality of sealing material.Grouting Pipe 3 is for linking up sealing of hole material capsule and external grouting pump; Antipriming pipe 10 is for linking up the hole wall of gas pumping pipe 5 and boring 6.
In addition, present invention also offers a kind of hole-sealing technology utilizing the sealing material of this this extraction borehole to carry out sealing of hole, this technique adopts initiatively protective voltage type hole-sealing technology, and Specific construction step is as follows:
The first step, first connects first gas pumping pipe 5 and front end antipriming pipe 10 in inserting and holing, then installs inner plug 7 at gas pumping pipe 5 jointing place, and fix water injection pipe 2;
Second step: connect tail gas drainage tube 5 successively, in the end outside plug 7 is loaded onto in gas pumping pipe 5 junction, and fixing Grouting Pipe 3 and vapor pipe 1;
3rd step: with water injection pipe 2 water filling, after inside and outside plug 7 expands, extract water injection pipe 2 out;
4th step: Grouting Pipe 3 be connected with grouting pump, starts slip casting, when pressure is increased to about 1MPa, can stop slip casting;
5th step: fixed by orifice sealing with remaining Novel sealing Porous materials 8 or cement 4, can timely grid-connected extraction;
6th step: extract Grouting Pipe 3 and vapor pipe 1, cleans, for injection hole sealing is ready next time tool for grouting in looses such as grouting pump, Grouting Pipe 3, agitators.
The present invention is the sealing of hole entity section active boost that realized by the character of grouting pump and sealing material itself and effectively can keeps the sealing of hole mode of relative pressure and internal stress thereof, and the implementation of this technique first with end cap, sealing of hole entity section is isolated into closed space; With grouting pump sealing material injected sealing of hole section again and possess certain grouting pressure; The swelling property of recycling material itself realizes active boost; Still have microdilatancy phenomenon after material solidification, the drying shrinkage loss of material can be made up on the one hand, can also effectively keep relative pressure and internal stress on the other hand.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (6)
1. the active pressurize sealing material of a mash gas pumping drilling, it is characterized in that, described sealing material choice for use cement-based gelling material, be the ordinary Portland cement of about 50%-90% and the aluminosulfate cement of about 10%-50% by massfraction, and add appropriate whipping agent and concrete admixture, it is made to reach the requirement of desirable sealing material, and the massfraction sum of each component is about 100%, wherein, described whipping agent is industrial aluminium powder, and described mixed earth admixture is water reducer, dispersion agent or concrete intensifier.
2. the active pressurize sealing material of a kind of mash gas pumping drilling according to claim 1, is characterized in that, the mass percentage of described ordinary Portland cement is 90%, 85%, 80%, 75%, 70%, 65%, 60%, 55% or 50%.
3. the active pressurize sealing material of a kind of mash gas pumping drilling according to claim 1, is characterized in that, the mass percent of described sulphoaluminate cement clinker is 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45% or 50%.
4. the active pressurize sealing material of a kind of mash gas pumping drilling according to claim 1, is characterized in that, described industrial aluminium powder and water ash mass ratio are 1: 65,2: 70,4: 70,6: 70,8: 75 or 10: 80.
5. the active pressurize sealing material of a kind of mash gas pumping drilling according to claim 1, is characterized in that, the proportioning of described ordinary Portland cement and sulphoaluminate cement clinker is 5% ~ 15% time, and water cement ratio is about 60%.
6. utilize the active pressurize sealing material of a kind of mash gas pumping drilling described in any one of claim 1-5 to carry out the hole-sealing technology of sealing of hole, it is characterized in that, this technique adopts initiatively protective voltage type hole-sealing technology, and Specific construction step is as follows:
The first step, first connects first gas pumping pipe and front end antipriming pipe in inserting and holing, then installs inner plug at gas pumping pipe jointing place, and fixing water injection pipe;
Second step: connect tail gas drainage tube successively, in the end outside plug is loaded onto in a gas pumping pipe junction, and fixing Grouting Pipe and vapor pipe;
3rd step: use water injection pipe water filling, after inside and outside plug expands, extracts water injection pipe out;
4th step: Grouting Pipe be connected with grouting pump, starts slip casting, when pressure is increased to about 1MPa, can stop slip casting;
5th step: fixed by orifice sealing with remaining sealing of hole material or cement, can timely grid-connected extraction;
6th step: extract Grouting Pipe and vapor pipe, cleans, for injection hole sealing is ready next time tool for grouting in looses such as grouting pump, Grouting Pipe, agitators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410609091.9A CN104449609A (en) | 2014-10-31 | 2014-10-31 | Active pressure maintaining and hole sealing material for gas extraction drill hole and hole sealing process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410609091.9A CN104449609A (en) | 2014-10-31 | 2014-10-31 | Active pressure maintaining and hole sealing material for gas extraction drill hole and hole sealing process thereof |
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| CN104449609A true CN104449609A (en) | 2015-03-25 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879088A (en) * | 2015-05-29 | 2015-09-02 | 辽宁工程技术大学 | Filling and hole protecting method aiming at low-permeability soft coal seam gas extraction borehole |
| CN105199692A (en) * | 2015-09-14 | 2015-12-30 | 河北铁园科技发展有限公司 | Low temperature rapid hardening grouting material for offshore oil well and preparation method thereof |
| CN106050296A (en) * | 2016-05-20 | 2016-10-26 | 西安科技大学 | Comprehensive mine gas pumping equipment and method |
| CN107100583A (en) * | 2017-05-09 | 2017-08-29 | 河北拓安管业有限公司 | A kind of fast hard mining hole packer of filter-press type and its application method |
| CN111004003A (en) * | 2019-11-22 | 2020-04-14 | 安徽春雨安全科技有限公司 | High-rate quick-setting type mining hole sealing material and using method thereof |
| CN112939542A (en) * | 2021-03-29 | 2021-06-11 | 贵州盘江煤电集团技术研究院有限公司 | High-strength, quick-setting and expansion type multipurpose grouting material and preparation and application methods thereof |
| CN113698165A (en) * | 2021-08-13 | 2021-11-26 | 华阳新材料科技集团有限公司 | Hole sealing material and using method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879088A (en) * | 2015-05-29 | 2015-09-02 | 辽宁工程技术大学 | Filling and hole protecting method aiming at low-permeability soft coal seam gas extraction borehole |
| CN105199692A (en) * | 2015-09-14 | 2015-12-30 | 河北铁园科技发展有限公司 | Low temperature rapid hardening grouting material for offshore oil well and preparation method thereof |
| CN105199692B (en) * | 2015-09-14 | 2019-01-04 | 河北铁园科技发展有限公司 | A kind of offshore field low temperature rapid hardening grouting material and preparation method thereof |
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| CN107100583A (en) * | 2017-05-09 | 2017-08-29 | 河北拓安管业有限公司 | A kind of fast hard mining hole packer of filter-press type and its application method |
| CN111004003A (en) * | 2019-11-22 | 2020-04-14 | 安徽春雨安全科技有限公司 | High-rate quick-setting type mining hole sealing material and using method thereof |
| CN112939542A (en) * | 2021-03-29 | 2021-06-11 | 贵州盘江煤电集团技术研究院有限公司 | High-strength, quick-setting and expansion type multipurpose grouting material and preparation and application methods thereof |
| CN112939542B (en) * | 2021-03-29 | 2022-07-26 | 贵州盘江煤电集团技术研究院有限公司 | High-strength, quick-setting and expansion type multipurpose grouting material and preparation and application methods thereof |
| CN113698165A (en) * | 2021-08-13 | 2021-11-26 | 华阳新材料科技集团有限公司 | Hole sealing material and using method thereof |
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Application publication date: 20150325 |