CN114163982B - Be used for repairing deep stratum CO 2 Leaked chemical grouting liquid and preparation method thereof - Google Patents
Be used for repairing deep stratum CO 2 Leaked chemical grouting liquid and preparation method thereof Download PDFInfo
- Publication number
- CN114163982B CN114163982B CN202111388475.9A CN202111388475A CN114163982B CN 114163982 B CN114163982 B CN 114163982B CN 202111388475 A CN202111388475 A CN 202111388475A CN 114163982 B CN114163982 B CN 114163982B
- Authority
- CN
- China
- Prior art keywords
- catalyst
- parts
- grouting liquid
- water
- mgcl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/24—Magnesium carbonates
-
- 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
- C09K3/00—Materials not provided for elsewhere
- C09K3/12—Materials for stopping leaks, e.g. in radiators, in tanks
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/5045—Compositions based on water or polar solvents containing inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Abstract
The invention discloses a method for repairing deep stratum CO 2 Leaked chemical grouting liquid and a preparation method thereof, belonging to the field of carbon dioxide capture and emission reduction, and the leaked chemical grouting liquid and the leaked CO are used for injecting the chemical grouting liquid 2 Acid-resistant carbonate mineral particles formed by chemical reaction to repair deep CO 2 Faults and fractures of geological repositories and accounting for CO 2 The problem of leakage. The reactive grouting liquid disclosed by the invention is environment-friendly, economical and simple to operate, can overcome the precipitation dynamics limitation of acid-resistant magnesite particles, and can remove CO in deep stratum 2 The leakage area catalyzes the rapid precipitation of acid-resistant magnesite particles; and has the characteristics of low viscosity and wide penetration range, so that the slurry can enter tiny pores and cracks and becomes a more promising reactive grouting liquid. The invention can be deep CO 2 Leakage repair and fault healing of geological repositories provides an effective chemical solution, and is suitable for popularization and application.
Description
Technical Field
The invention relates to the field of carbon dioxide capture and emission reduction, in particular to a method for repairing deep stratum CO 2 A leaked chemical grout and a method of making the same.
Background
The captured CO is 2 Sequestration in deep geological repositories is an effective method to control global warming, and CO 2 Long term leakage (through faults, high permeability zones, cracks) will lead to failure of the carbon sequestration project. In the traditional cement grouting method, because the cement grout has higher viscosity, the grouting can be realized only by a high-pressure grouting method. The traditional granular slurry is difficult to inject into micro-cracks and has poor stratum repairing effect. And fine pores are generated in the grouting material due to evaporation of bleeding water during the solidification thereof. However, natural rock has narrow pores and cracks, and aqueous solutions having low viscosity are considered as more promising reactive grouting repair fluids through small pores (or small cracks).
Disclosure of Invention
In view of the above, the present invention provides a method for repairing deep formation CO, which is directed to the problems in the prior art 2 Method for preparing leaked chemical grouting liquid, which catalyzes deep stratum leaked CO by using catalyst in grouting liquid 2 And the slip slurry to accelerate the formation of acid-resistant mineral particles that can plug the cracks in the carbon reservoir.
It should be noted that the present invention proposes to use a grouting liquid (MgCl) 2 Aqueous solution) and leaking CO 2 By chemical reaction (Mg) 2+ Ions with CO 2 CO dissolved in water 3 2- Chemical reaction between ions) formed acid-resistant carbonate mineral particles to cement fill deep CO 2 Faults and fractures of geological reservoirs to address deep formation CO 2 The problem of leakage.
The invention abandons the traditional Ca proposed by the predecessor 2+ Use of ionic remediation liquids due to CO in the remediation zone 2 The accumulation will lower the pH of the aqueous solution and drive the earlier precipitation of calcite (CaCO) 3 ) Go toAnd (4) dissolving. Thus, in CO 2 The more stable reaction products in a leakage scenario (slightly acidic environment) can be used as a long-term effective sealing material, while the acid-resistant mineral particles can effectively block CO 2 Leakage and deep CO mitigation 2 Risks involved with geological repositories. Anhydrous magnesite (MgCO) at pH 1-14 3 ) The dissolution rate is 2-3 orders of magnitude lower than that of calcite, which makes acid-resistant magnesite particles a more promising sealing material.
Furthermore, deep CO 2 The temperature of the reservoir can reach as high as 150-200 ℃, and the temperature is beneficial to the formation of anhydrous magnesite>At 90 deg.C). However, before the precipitated mineral particles finally change phase to magnesite, there are various forms of metastable hydrated magnesium carbonate (e.g. magnesium carbonate trihydrate MgCO) 3 ·3H 2 O, basic magnesium carbonate (MgCO) 3 ) 4 ·Mg(OH) 2 ·4H 2 O, brucite Mg (OH) 2 ) The hydrated magnesium carbonate is more soluble and unstable and is not suitable for being used as a material for plugging cracks, and how to accelerate the phase change from the hydrated magnesium carbonate to magnesite is to quickly repair deep CO 2 The criticality of the leakage area.
Currently, the difficulties in magnesite formation mainly result from the strong hydrolytic properties of magnesium ions and the high energy barrier forming long-range ordered crystal structures. Magnesium ions can combine with six water molecules to form an octahedral structure ([ Mg (H) 2 O) 6 ] 2+ ) The strong interaction of magnesium ions with water is mainly due to the high charge density of magnesium ions. Because the dehydration of magnesium ions and the rapid dehydration phase change of hydrated magnesium carbonate are key factors for accelerating the formation of magnesite, the invention patent accelerates the generation of the two chemical processes by using a catalyst and realizes the cementation and filling of CO by using acid-resistant particles by focusing on a chemical method for catalyzing the precipitation of the magnesite 2 The fracture of geological repository and repair the fault.
In order to achieve the purpose, the invention adopts the following technical scheme:
be used for repairing deep stratum CO 2 A chemical slip consisting of water, mgCl 2 And catalyst composition by weightThe weight portion is as follows:
grouting liquid A: 100 parts of water, namely adding 100 parts of water,
MgCl 2 5-10 parts of (by weight),
5-30 parts of a catalyst A;
or, grouting liquid B: 100 parts of water, namely adding 100 parts of water,
MgCl 2 5-10 parts of (by weight),
catalyst B8X 10 -5 -8×10 -1 Preparing;
or, grouting liquid C: 100 parts of water, namely adding 100 parts of water,
MgCl 2 5-10 parts of (by weight),
catalyst C5X 10 -3 -3×10 -2 And (4) portions are obtained.
Preferably, the catalyst A is an analytically pure chemical reagent, and the catalyst A is at least NaCl and ZnCl 2 、AlCl 3 One of
Preferably, the catalyst B is an analytically pure chemical reagent, and the catalyst B is NaOH.
Preferably, the catalyst C is a solid powder having a diameter of less than 100 nm, and the catalyst C is a carbon nanotube or nano MgO.
In the grouting liquid, mgCl is present 2 Solution and deep formation leaking CO 2 The chemical reaction occurs to preferentially form hydrated magnesium carbonate, and the phase change is gradually carried out along with the evolution of time to form anhydrous magnesite. By adopting the technical scheme, mgCl is added 2 The catalyst is added into the grouting liquid to accelerate the precipitation of magnesite; and according to the difference of the catalytic mechanism of the catalyst, the chemical grouting liquid in the invention patent can be divided into three types: the specific reaction mechanism and the technical problems to be solved of the grouting liquid A, the grouting liquid B and the grouting liquid C are as follows:
the solution to the technical problem of the grouting liquid a is to dissolve NaCl in water to form a salt solution. Wherein the NaCl salt solution can increase the ionic strength of the solution, decrease the water activity and make [ Mg (H) 2 O) 6 ] 2+ Becomes more unstable. The above process will promoteMg 2+ De-hydrolysis of ions and removal of Mg 2+ Ions are incorporated into the crystals of magnesite. Similarly, zn in salt solution 2+ 、Al 3+ Ion phase ratio Mg 2+ The ions also have a higher entropy of hydrolysis, which will give Zn 2+ 、Al 3+ The ions may be with Mg 2+ Ions compete for adsorption of water molecules and lead to Mg 2+ De-hydrolysis of ions and promotion of Mg 2+ The ions enter the magnesite crystal. Thus, any one of the catalysts (ZnCl) 2 Or AlCl 3 ) Added to MgCl 2 In the grouting liquid, the magnesite is promoted to be CO at the deep part 2 Rapid settling of the leak region.
The slip casting solution B solves the technical problem by dissolving NaOH in water to form an alkaline solution. The alkaline environment may provide an advantage for carbonate formation because the small to large concentration of the carbon-containing element particles in the alkaline environment is ordered as CO 2 <HCO 3 - <CO 3 2- Increased CO 3 2- The ionic activity may increase the saturation index of carbonate minerals. Further, OH - The ions are beneficial to the formation of basic magnesium carbonate (hydrated magnesium carbonate), more basic magnesium carbonate is converted into magnesite through phase change, and more OH is released - Ion (formula 1), more OH - Ions make CO in solution 3 2- Ion predominance (stronger CO) 3 2- Ionic activity) will further promote the dehydration phase of basic magnesium carbonate to magnesite.
The technical problem of the grouting liquid C is solved by uniformly dispersing nano MgO or carbon nano tubes in MgCl 2 In solution. The addition of nano MgO provides heterogeneous nucleation sites for the generation of magnesium carbonate, and the weak hydrolysis property of MgO (the hydrolysis surface forms a hydroxyl structure, and the pH of pure MgO suspension is about 10.4-10.5) can enhance the alkalinity of the grouting liquid. This will accelerate the direct phase change of basic magnesium carbonate to magnesite, since CO 3 2- Ion in alkaline environmentMost abundant (formula 1). The addition of carbon nanotubes not only provides heterogeneous nucleation sites for the generation of magnesium carbonate, but can potentially achieve enhanced precipitation kinetics by reducing the activation energy of nucleation. In addition, since the carbon nanotube is a hydrophobic material, the dehydration (water repelling) process will be enhanced when the basic magnesium carbonate is dehydrated and transformed into magnesite (formula 2).
4MgCO 3 ·Mg(OH) 2 ·4H 2 O→4MgCO 3 +Mg(OH) 2 +4H 2 O (2)
In addition, the invention also claims the application of the method for repairing deep stratum CO 2 The preparation method of the leaked chemical grouting liquid specifically comprises the following steps:
according to the weight portion, mgCl 2 Uniformly mixing and stirring the mixture and water in a container until the mixture is completely dissolved; catalyst A was then added to MgCl 2 Stirring the solution until the particles are completely dissolved to obtain grouting liquid A;
or, according to the weight portion, mgCl 2 Uniformly mixing and stirring the mixture and water in a container until the mixture is completely dissolved; catalyst B was then added to MgCl 2 Stirring the solution until the particles are completely dissolved to obtain grouting liquid B;
or, according to the weight portion, mgCl 2 Mixing with water in a container, and stirring until it is completely dissolved; catalyst C was then added to MgCl 2 And (4) uniformly dispersing in the solution to obtain grouting liquid C.
According to the technical scheme, compared with the prior art, the method for repairing the deep stratum CO is provided 2 The leaked chemical grouting liquid and the preparation method thereof have the following excellent effects:
(1) The invention provides NaCl and ZnCl catalysts 2 、AlCl 3 Can accelerate MgCl 2 Grouting and CO leakage 2 The chemical reaction between the acid-resistant mineral particles and the magnesite is realized, and the acid-resistant mineral particles and the magnesite are quickly formed; the catalyst NaOH can accelerate the basic magnesium carbonate to be quickly dehydrated to form magnesite; the catalyst carbon nano tube and nano MgO can provide heterogeneous nucleation sites for the generation of magnesium carbonate and reduce the generation intoThe activation energy of the nucleus realizes the enhanced precipitation kinetics of magnesite, the hydrophobic interface characteristic of the carbon nano tube can also accelerate the dehydration phase change of basic magnesium carbonate to the magnesite, and the solution alkalinity enhanced by MgO suspension can also catalyze the rapid phase change of the basic magnesium carbonate to the magnesite (stronger CO) 3 2- Ionic activity). The chemical grouting liquid can realize grouting liquid and CO 2 To catalyze acid-resistant granular magnesite to CO 2 The formation of leakage seams is finally realized to rapidly treat and block the CO in the deep stratum 2 The purpose of the leak.
(2) The grouting liquid used in the invention can be used for discharging leaked CO 2 Fixation as carbonate mineral, this accelerated CO 2 The method of mineralization sequestration can convert CO 2 Stably and safely sealed in rock minerals, and is beneficial to carbon sealing and carbon emission reduction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 shows CO 2 The chemical method schematic diagram for leakage treatment by adopting the grouting liquid provided by the invention is adopted under the condition that the geological repository leaks; wherein, 1, grouting liquid, 2, grouting liquid and leakage CO 2 Acid-resistant carbonate, 3, CO produced by chemical reaction 2 Reservoir cracks, 4, cap, 5, fault.
FIG. 2 is a schematic representation of the electron microscope scanning of basic magnesium carbonate obtained by 1 hour reaction in example 7.
FIG. 3 is a schematic scanning electron microscope of magnesite obtained by 7-hour reaction in example 7.
FIG. 4 is a schematic X-ray diffraction diagram of solid particles obtained by the reaction for 1 hour in example 7.
FIG. 5 is a schematic X-ray diffraction diagram of solid particles obtained by the reaction for 7 hours in example 7.
Detailed Description
The technical solutions disclosed in the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings of the specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a method for repairing deep stratum CO 2 A method of making a leaked chemical grout.
The present invention will be further illustrated by the following examples for better understanding, but the invention is not to be construed as being limited thereto, and certain insubstantial modifications and adaptations of the invention by those skilled in the art based on the foregoing disclosure are intended to be included within the scope of the invention.
Example 1:
be used for repairing deep stratum CO 2 The preparation method of the leaked chemical grouting liquid specifically comprises the following steps:
(1) According to the parts by weight, 5.7 parts of MgCl 2 Uniformly mixing and stirring the mixture and 100 parts of water in a container until the mixture is completely dissolved;
(2) 11.7 parts of catalyst NaCl was added to the solution in step (1) and stirred until the particles were completely dissolved, to obtain a slurry A.
With Na 2 CO 3 Solution simulation of carbon source leaked:
(3) 6.4 parts of Na 2 CO 3 Uniformly stirring the mixture with 100 parts of water in a new container until the mixture is completely dissolved;
(4) The process of step (1-3) was repeated 5 times, the solution obtained in step (2-3) was mixed in a container, and the container was placed in a preheated thermostat (200 ℃ C.), and 5 chemical reaction tests were started at the same time. And taking out the reacted solid after reacting for 1, 2, 3, 5 and 7 hours respectively, and quantitatively analyzing the content of the magnesite by an X-ray diffractometer (XRD) after drying.
Example 2:
be used for repairing deep stratum CO 2 The preparation method of the leaked chemical grouting liquid specifically comprises the following steps of:
(1) According to the parts by weight, 5.7 parts of MgCl 2 Uniformly mixing and stirring the mixture and 100 parts of water in a container until the mixture is completely dissolved;
(2) 17.5 parts of catalyst NaCl was added to the solution in step (1) and stirred until the particles were completely dissolved, to obtain a slurry A.
With Na 2 CO 3 Solution simulation of carbon source leaked:
(3) 6.4 parts of Na 2 CO 3 Uniformly stirring the mixture with 100 parts of water in a new container until the mixture is completely dissolved;
(4) The process of step (1-3) was repeated 5 times, the solution obtained in step (2-3) was mixed in a container, and the container was placed in a preheated thermostat (200 ℃ C.), and 5 chemical reaction tests were started at the same time. And taking out the reacted solid after reacting for 1, 2, 3, 5 and 7 hours respectively, and quantitatively analyzing the content of the magnesite by an X-ray diffractometer (XRD) after drying.
Example 3:
be used for repairing deep stratum CO 2 The preparation method of the leaked chemical grouting liquid specifically comprises the following steps:
(1) According to the parts by weight, 5.7 parts of MgCl 2 Uniformly mixing and stirring the mixture and 100 parts of water in a container until the mixture is completely dissolved;
(2) 23.4 parts of catalyst NaCl was added to the solution in step (1) and stirred until the particles were completely dissolved, to obtain a slurry A.
With Na 2 CO 3 Solution simulation of leaked carbon source:
(3) 6.4 parts of Na 2 CO 3 Uniformly stirring the mixture with 100 parts of water in a new container until the mixture is completely dissolved;
(4) The process of step (1-3) was repeated 5 times, the solution obtained in step (2-3) was mixed in a container, and the container was placed in a preheated thermostat (200 ℃ C.), and 5 chemical reaction tests were started at the same time. And taking out the reacted solid after reacting for 1, 2, 3, 5 and 7 hours respectively, and quantitatively analyzing the content of the magnesite by an X-ray diffractometer (XRD) after drying.
Example 4:
be used for repairing deep stratum CO 2 The preparation method of the leaked chemical grouting liquid specifically comprises the following steps:
(1) According to the weight portion, 5.7 portions of MgCl 2 Uniformly mixing and stirring the mixture and 100 parts of water in a container until the mixture is completely dissolved;
(2) Mix 8X 10 -5 Part of catalyst NaOH is added to the solution in the step (1) and stirred until the particles are completely dissolved, so as to obtain grouting liquid B.
With Na 2 CO 3 Solution simulation of leaked carbon source:
(3) 6.4 parts of Na 2 CO 3 Uniformly stirring the mixture with 100 parts of water in a new container until the mixture is completely dissolved;
(4) The process of step (1-3) was repeated 5 times, the solution obtained in step (2-3) was mixed in a container, and the container was placed in a preheated thermostat (200 ℃ C.), and 5 chemical reaction tests were started at the same time. And taking out the reacted solid after reacting for 1, 2, 3, 5 and 7 hours respectively, and quantitatively analyzing the content of the magnesite by an X-ray diffractometer (XRD) after drying.
Example 5:
be used for repairing deep stratum CO 2 The preparation method of the leaked chemical grouting liquid specifically comprises the following steps:
(1) According to the weight portion, 5.7 portions of MgCl 2 Uniformly mixing and stirring the mixture and 100 parts of water in a container until the mixture is completely dissolved;
(2) Will be 6X 10 -3 Adding part of nano MgO catalyst (with the diameter of 40-60 nanometers) into the solution in the step (1) and uniformly dispersing to obtain grouting liquid C.
With Na 2 CO 3 Solution simulation of leaked carbon source:
(3) 6.4 parts of Na 2 CO 3 Uniformly stirring the mixture and 100 parts of water in a new container until the mixture is completely dissolved;
(4) The process of step (1-3) was repeated 5 times, the solution obtained in step (2-3) was mixed in a container, and the container was placed in a preheated thermostat (200 ℃ C.), and 5 chemical reaction tests were started at the same time. And taking out the reacted solid after reacting for 1, 2, 3, 5 and 7 hours respectively, drying the solid, and quantitatively analyzing the content of the magnesite by an X-ray diffractometer (XRD).
Example 6:
be used for repairing deep stratum CO 2 The preparation method of the leaked chemical grouting liquid specifically comprises the following steps:
(1) According to the parts by weight, 5.7 parts of MgCl 2 Uniformly mixing and stirring the mixture and 100 parts of water in a container until the mixture is completely dissolved;
(2) Mixing 1.2X 10 -2 Adding part of nano MgO catalyst (with the diameter of 40-60 nanometers) into the solution in the step (1) and uniformly dispersing to obtain grouting liquid C.
With Na 2 CO 3 Solution simulation of leaked carbon source:
(3) 6.4 parts of Na 2 CO 3 Uniformly stirring the mixture with 100 parts of water in a new container until the mixture is completely dissolved;
(4) The process of step (1-3) was repeated 5 times, the solution obtained in step (2-3) was mixed in a container, and the container was placed in a preheated thermostat (200 ℃ C.), and 5 chemical reaction tests were started at the same time. And taking out the reacted solid after reacting for 1, 2, 3, 5 and 7 hours respectively, drying the solid, and quantitatively analyzing the content of the magnesite by an X-ray diffractometer (XRD).
Example 7:
be used for repairing deep stratum CO 2 The preparation method of the leaked chemical grouting liquid specifically comprises the following steps:
(1) According to the parts by weight, 5.7 parts of MgCl 2 Uniformly mixing and stirring the mixture and 100 parts of water in a container until the mixture is completely dissolved;
(2) 2.4X 10 -2 Adding part of nano MgO catalyst (with the diameter of 40-60 nanometers) into the solution in the step (1) and uniformly dispersing to obtain grouting liquid C.
With Na 2 CO 3 Solution simulation of leaked carbon source:
(3) 6.4 parts of Na 2 CO 3 Uniformly stirring the mixture with 100 parts of water in a new container until the mixture is completely dissolved;
(4) The process of step (1-3) was repeated 5 times, the solution obtained in step (2-3) was mixed in a container, and the container was placed in a preheated thermostat (200 ℃ C.), and 5 chemical reaction tests were started at the same time. And taking out the reacted solid after reacting for 1, 2, 3, 5 and 7 hours respectively, and quantitatively analyzing the content of the magnesite by an X-ray diffractometer (XRD) after drying.
The invention is not limited to the embodiments described above, and one or a combination of several embodiments may also achieve the object of the invention.
To further verify the excellent effects of the present invention, the inventors also conducted the following experiments:
comparative example 1:
be used for repairing deep stratum CO 2 The preparation method of the leaked chemical grouting liquid specifically comprises the following steps:
(1) According to the parts by weight, 5.7 parts of MgCl 2 Uniformly mixing and stirring the mixture and 100 parts of water in a container until the mixture is completely dissolved;
with Na 2 CO 3 Solution simulation of leaked carbon source:
(2) 6.4 parts of Na 2 CO 3 Uniformly stirring the mixture with 100 parts of water in a new container until the mixture is completely dissolved;
(3) The process of step (1-2) was repeated 5 times, the solution obtained in step (1-2) was mixed in a container, and the container was placed in a preheated thermostat (200 ℃) and 5 chemical reaction tests were started at the same time. And taking out the reacted solid after reacting for 1, 2, 3, 5 and 7 hours respectively, and quantitatively analyzing the content of the magnesite by an X-ray diffractometer (XRD) after drying.
And (2) detecting the effect of the repair liquid, namely detecting the effect of catalyzing magnesite precipitation by different grouting liquids, wherein the mass fractions of magnesite at different moments are as follows (table 1):
table 1 effect test of slurry injection to catalyze precipitation of magnesite
From table 1 it can be seen that examples 1-7 can catalyse the rapid precipitation of solid particles of magnesite, and that the magnesite content in the examples is significantly higher than that in the comparative example for 3 hours. The chemical grouting liquid provided by the invention can provide quick repair and CO plugging 2 The chemical grouting liquid for the leakage seam can also achieve the purpose of quickly cementing and filling the seam by catalyzing the precipitation of acid-resistant minerals.
In addition, electron microscope scanning images of basic magnesium carbonate obtained by reaction for 1 hour and magnesite obtained by reaction for 7 hours in example 7 are shown in fig. 2 and 3. Wherein, the basic magnesium carbonate is of a sheet structure, and the magnesite is of a diamond structure.
Further, XRD patterns of basic magnesium carbonate obtained by reaction for 1 hour and magnesite obtained by reaction for 7 hours in example 7 are shown in FIGS. 4 and 5. As can be seen from the figure, the grouting liquid disclosed by the invention can be dehydrated and transformed into magnesite from basic magnesium carbonate through chemical reactions in different time periods.
And as can be seen from FIG. 1, CO 2 The fracture and reactivated fault in the geological reservoir is CO 2 Potential leakage paths, and a schematic diagram showing the full utilization of solid particles generated by chemical reaction to repair cracks, heal faults and slow CO 2 Chemical methods of risk of leakage.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. Used for repairing deep landLayer CO 2 A leaked chemical grout, characterized in that said chemical grout is prepared from water, mgCl 2 And a catalyst, wherein the catalyst comprises the following components in parts by weight:
grouting liquid A: 100 parts of water, namely adding 100 parts of water,
MgCl 2 5-10 parts of (A) a water-soluble polymer,
5-30 parts of a catalyst A;
or, grouting liquid B: 100 parts of water, namely adding 100 parts of water,
MgCl 2 5-10 parts of (A) a water-soluble polymer,
catalyst B8X 10 -5 -8×10 -1 Preparing;
or, grouting liquid C: 100 parts of water, namely adding 100 parts of water,
MgCl 2 5-10 parts of (A) a water-soluble polymer,
catalyst C5X 10 -3 -3×10 -2 Preparing;
the catalyst A is an analytically pure chemical reagent, and the catalyst A is at least NaCl and ZnCl 2 、AlCl 3 One of (1);
the catalyst B is an analytically pure chemical reagent, and the catalyst B is NaOH;
the catalyst C is solid powder with the diameter less than 100 nanometers, and the catalyst C is carbon nano tube or nano MgO.
2. The method of claim 1 for repairing deep formation CO 2 The preparation method of the leaked chemical grouting liquid is characterized by specifically comprising the following steps of:
according to the weight portion, mgCl 2 Uniformly mixing and stirring the mixture and water in a container until the mixture is completely dissolved; catalyst A was then added to MgCl 2 Stirring the solution until the particles are completely dissolved to obtain grouting liquid A;
or, according to the weight portion, mgCl 2 Uniformly mixing and stirring the mixture and water in a container until the mixture is completely dissolved; catalyst B was then added to MgCl 2 Stirring the solution until the particles are completely dissolved to obtain grouting liquid B;
or, according to the weight portion, mgCl 2 Mixing with water in a container, and stirring until it is finishedFully dissolving; catalyst C was then added to MgCl 2 And (4) uniformly dispersing in the solution to obtain grouting liquid C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111388475.9A CN114163982B (en) | 2021-11-22 | 2021-11-22 | Be used for repairing deep stratum CO 2 Leaked chemical grouting liquid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111388475.9A CN114163982B (en) | 2021-11-22 | 2021-11-22 | Be used for repairing deep stratum CO 2 Leaked chemical grouting liquid and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114163982A CN114163982A (en) | 2022-03-11 |
| CN114163982B true CN114163982B (en) | 2022-12-02 |
Family
ID=80480072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111388475.9A Active CN114163982B (en) | 2021-11-22 | 2021-11-22 | Be used for repairing deep stratum CO 2 Leaked chemical grouting liquid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114163982B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675360A (en) * | 2014-12-22 | 2015-06-03 | 中国石油大学(华东) | Leakage-proofing process for exploiting hot-dry-rock geothermal resource by injecting CO2 (supercritical carbon dioxide) |
| CN104726079A (en) * | 2015-01-27 | 2015-06-24 | 中国石油天然气股份有限公司 | CO2 gas sensitive chemical plugging agent |
| CN113494265A (en) * | 2021-07-23 | 2021-10-12 | 中国地质调查局水文地质环境地质调查中心 | Method for blocking leakage along abandoned well in geological carbon dioxide sequestration process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7132090B2 (en) * | 2003-05-02 | 2006-11-07 | General Motors Corporation | Sequestration of carbon dioxide |
| GB201307830D0 (en) * | 2013-04-30 | 2013-06-12 | Univ Aberdeen | A method for sequestering carbon dioxide |
| US10197747B2 (en) * | 2014-09-23 | 2019-02-05 | Blue Planet, Ltd. | Carbon sequestration methods and systems |
| CN110079435A (en) * | 2014-12-18 | 2019-08-02 | 加州理工学院 | For CO2The method and apparatus sealed up for safekeeping |
| AU2019216878A1 (en) * | 2018-02-08 | 2020-08-06 | Mineral Carbonation International Pty Ltd | Integrated process for mineral carbonation |
| JP7319355B2 (en) * | 2018-05-08 | 2023-08-01 | ミネラル カーボネーション インターナショナル ピーティーワイ リミテッド | carbonate mineralization |
-
2021
- 2021-11-22 CN CN202111388475.9A patent/CN114163982B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675360A (en) * | 2014-12-22 | 2015-06-03 | 中国石油大学(华东) | Leakage-proofing process for exploiting hot-dry-rock geothermal resource by injecting CO2 (supercritical carbon dioxide) |
| CN104726079A (en) * | 2015-01-27 | 2015-06-24 | 中国石油天然气股份有限公司 | CO2 gas sensitive chemical plugging agent |
| CN113494265A (en) * | 2021-07-23 | 2021-10-12 | 中国地质调查局水文地质环境地质调查中心 | Method for blocking leakage along abandoned well in geological carbon dioxide sequestration process |
Non-Patent Citations (1)
| Title |
|---|
| （"Comparative study of the kinetics and mechanisms of dissolution of carbonate minerals";Chou Lei;《Chemical Geology》;20030326;第78卷(第3-4期);第280页左栏 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114163982A (en) | 2022-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102602973B (en) | Method for synthesizing ultrafine calcium carbonate by utilizing carbide slag | |
| CN106334518B (en) | A kind of recyclable magnetic phosphorus adsorbent and preparation method thereof | |
| CN103170226A (en) | New process for fixing carbon dioxide | |
| CN114380310B (en) | Red mud dealkalization method | |
| CN113800546A (en) | CO (carbon monoxide)2Method for preparing micro-nano calcium carbonate by mineralizing calcium-containing solid waste residues | |
| CN101935866B (en) | Method for preparing flaky calcite calcium carbonate crystal | |
| WO2023236312A1 (en) | Preparation method for lanthanum-loaded nitrogen-doped porous carbon-phosphorus adsorption material | |
| CN106243240A (en) | A kind of method utilizing rare earth ion coordination to prepare natural macromolecular material | |
| CN114163982B (en) | Be used for repairing deep stratum CO 2 Leaked chemical grouting liquid and preparation method thereof | |
| Si et al. | Simultaneous removal of nitrogen and phosphorus by magnesium-modified calcium silicate core-shell material in water | |
| CN115196939A (en) | Soft soil curing agent and modified soil material for surface layer of shield muck accumulation area and preparation method thereof | |
| CN111548089A (en) | Barrier material with environment repairing function and preparation and use methods thereof | |
| JP2009173924A (en) | Grouting agent and grouting method | |
| US8580979B1 (en) | Method of preparing a humic acid extraction | |
| CN105948076B (en) | A kind of method that sequestration of carbon dioxide produces light magnesium carbonate co-production ammonium chloride | |
| CN1284729C (en) | Method for preparing superfine light calcium carbonate | |
| CN114602505B (en) | Magnetic carbon-based solid acid catalyst, preparation method thereof, application thereof in sludge treatment and method for recycling nitrogen and phosphorus by hydrothermal carbonization | |
| CN111410498A (en) | Low-chloride-ion-content environment-friendly alkali residue and sludge composite solidified soil | |
| CN108439449B (en) | Method for efficiently preparing micron-sized spindle-shaped calcium carbonate | |
| CN104418376B (en) | A kind of production technology of winnofil | |
| Zhao et al. | Research progress of CaO-based absorbents prepared from different calcium sources | |
| CN102618292A (en) | Modified red mud and preparation method thereof | |
| CN115417409A (en) | Method for strengthening red mud carbon fixation through cooperation of multi-industry solid wastes | |
| CN105032917B (en) | Chromium slag leachate contamination soil emergence treating method | |
| KR20150120714A (en) | Method and apparatus for producing cement using carbon dioxide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |