CN114213049A - Carbon dioxide corrosion resistant material for oil well cement and preparation method and application thereof - Google Patents
Carbon dioxide corrosion resistant material for oil well cement and preparation method and application thereof Download PDFInfo
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- CN114213049A CN114213049A CN202111500327.1A CN202111500327A CN114213049A CN 114213049 A CN114213049 A CN 114213049A CN 202111500327 A CN202111500327 A CN 202111500327A CN 114213049 A CN114213049 A CN 114213049A
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- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
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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
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- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/61—Corrosion inhibitors
Abstract
The invention discloses a carbon dioxide corrosion resistant material for oil well cement and a preparation method and application thereof. The oil well cement is used for resisting CO2The preparation method of the corrosion material comprises the following steps: s1, mixing forsterite, fayalite and calcium forsterite, and then carrying out ball milling; s2, drying and tabletting the ball-milled materials in sequence to obtain test pieces; s3, pre-sintering the test piece, cooling and crushing to obtain powder; s4, calcining the powder at high temperature, and quenching to obtain the CO resistance2And corroding the material. The preparation method provided by the invention has the advantages of reliable technology, high yield and lower requirement on the quality of raw materials; the prepared product has high uniformity, good chemical stability and strong hydration capability, and is suitable for large-scale industrial production. The invention improves the corrosion resistance of the set cement by the olivine additiveCan also enhance the resistance of oil well cement and ensure that the cement sheath has better integrity.
Description
Technical Field
The invention relates to a carbon dioxide corrosion resistant material for oil well cement, a preparation method and application thereof, and belongs to the technical field of oil well solid seal cement.
Background
At present, most of cement used for cementing oil and gas wells is a portland cement system. In recent years, CO of cemented portland cement2The problem of corrosion is of great concern. This is due to the high concentration of CO in the formation2Has been derived from associated gas of not only oil and natural gas, but also CO2Oil displacement and CO2CO mass injection by sequestration and the like2This greatly increases the CO in the formation2The concentration of (c). High concentration of CO in downhole high temperature, high pressure and humid environments2Will generate serious corrosion to the silicate cement in a short time, which is represented by the increase of the permeability and the reduction of the strength of the cement, the cement loses the sealing performance, the sealing performance of the sealing system fails, and further the reduction of oil gas recovery ratio and CO are caused2Loss of burialSerious consequences such as failure. Therefore, the conventional portland cement stone has not been satisfactory for containing CO at a high concentration2The long-term sealing requirements of oil and gas wells in the formation require the research of novel CO resistance2The corrosion well cementation cement system replaces the traditional portland cement system or a novel CO resistance system is researched2Corrosion of materials to improve CO resistance of well cementing set cement2Corrosion performance, ensuring high CO content2Oil and gas reservoir production, CO2Oil displacement and CO2Successful application of technologies such as burial.
At present, the prior art reports that the CO resistance of the set cement is improved by adding an additive2Corrosion performance, disclosed CO resistance2The corrosion admixture and admixture include: latex, resin, micro-silicon, fly ash, slag and other materials. Due to organic anti-CO2The corrosion admixture has poor high temperature resistance and salt tolerance; and the application of the admixture such as slag, micro silicon and the like has limitation and poor durability. In summary, CO2Corrosion remains a serious and ineffectively addressed problem in oil and gas development. Therefore, the research on the CO resistance for the high-efficiency oil well cement2The corrosion material has important significance for improving the economic benefit of oil and gas production, prolonging the service life of an oil and gas well and realizing safe production.
Disclosure of Invention
The invention aims to provide a CO-resistant cement for oil well2The corrosion-resistant cement sheath improves the corrosion resistance of the set cement by adding the olivine serving as the additive, enhances the resistance of oil well cement, and ensures that the cement sheath has better integrity.
The invention provides CO resistance for oil well cement2The preparation method of the corrosion material comprises the following steps:
s1, mixing forsterite, fayalite and calcium forsterite, and then carrying out ball milling;
s2, drying and tabletting the ball-milled materials in sequence to obtain test pieces;
s3, pre-sintering the test piece, cooling and crushing to obtain powder;
s4, calcining the powder at high temperature, and quenching to obtain the CO resistance2And corroding the material.
In the above preparation method, in step S1, the average particle diameters of the forsterite, the forsterite and the camauterite are all less than or equal to 50 μm;
the mass ratio of the forsterite to the manganese olivine to the calcium-magnesium olivine is 80: 4-15: 5 to 20.
The mass ratio of the three components is preferably 80-85: 5-10: 5-10, 80-85: 5: 5-10, 80-85: 5-10: 10. 80:5: 15. 85:5:10 or 80:10: 10.
preferably, the particle size of the powder material after ball milling is about 325 mesh, i.e., about 45 μm.
In the above preparation method, in step S2, the drying conditions are as follows:
drying with box blower at 90 deg.C for 12 h.
The tabletting conditions were as follows:
the pressure is 50-65 KN, the boosting rate is 0.2KN/s, the pressure is relieved after 185-200 s of pressure maintaining, and the pressure is less than or equal to 4.5KN during pressure relief.
In the above preparation method, in step S3, the pre-sintering step is as follows:
the temperature is between room temperature and 850 ℃, and the heating time is 45-55 min; keeping the temperature at 850 ℃ for 5-20 min; raising the temperature for 30-45 min at 850-1250 ℃; 1250-1350 ℃, the temperature rise time is 30min, and the heat preservation time is 40-120 min;
the cooling mode is natural cooling or wind cooling.
The crushing mode is jet milling, and the particle size of powder subjected to jet milling is 15-35 mu m;
compared with the grinding and crushing mode, the jet crushing is more suitable for preparing materials in the superfine particle class.
In the above preparation method, in step S4, the conditions of the high-temperature calcination are as follows:
the temperature is 1500-1600 ℃, preferably 1500 ℃, 1550 ℃ or 1600 ℃, and the time is 20-35 s, preferably 25s, 28s or 35 s;
the quenching adopts a liquid nitrogen quenching mode.
The oil well cement prepared by the method resists CO2Corrosive materials are also within the scope of the present invention.
The invention is resistant to CO2The corrosive material is added into the silicate cement stone to obtain CO resistance2Corroded cementing cement;
the silicate cement is preferably G-grade oil well cement;
the G-grade oil well cement stone can be prepared from G-grade oil well cement and conventional additives and external admixtures in the field, such as a dispersing agent, a fluid loss additive, a defoaming agent and the like, and the addition amount of the dispersing agent, the fluid loss additive, the defoaming agent and the like can be determined according to specific needs;
the invention is CO resistant2Corrosion of materials against CO2The mass percentage of the silicate cement in the corroded cementing set cement can be 4-7%.
The invention provides anti-CO2The corroded well cementation set cement is particularly suitable for high CO content2Sour oil and gas well and natural gas/CO2High temperature resistance and CO resistance to well cementing cement stone in well driving and cementing construction and the like2The well cementation operation with severe corrosive requirements can seal and fix high-concentration CO for a long time2The corroded oil and gas well can also reduce the occurrence of gas channeling.
Compared with the prior art, the invention has the following beneficial effects:
(1) the method adopts a two-step sintering process, uniformly heats the interior of the test piece through the pre-sintering in the first step, decomposes partial residual organic impurities, and then forms an olivine product through the high-temperature calcination in the second step. The pre-calcination process ensures that the product has high uniformity and good chemical uniformity.
(2) The method of the invention adopts jet milling, avoids introducing new impurities in the milling process, and ensures the purity and chemical stability of the product. The particle size after crushing is 15-35 mu m, and the specific surface area is large, so that the raw materials can fully react in the high-temperature calcination process.
(3) The method adopts a liquid nitrogen quenching process to promote CO resistance2Sufficient internal stress is provided in the corroded material, and the resistance to CO is achieved2The surface of the corroded material is spherical and has a large number of cracksAnd the purpose of controlling the particle size of the product.
(4) The method has the advantages of simple operation, high yield, short production period, low requirement on the quality of raw materials and large-scale application.
The preparation method provided by the invention has the advantages of reliable technology, high yield and lower requirement on the quality of raw materials; the prepared product has high uniformity, good chemical stability and strong hydration capability, and is suitable for large-scale industrial production.
Drawings
FIGS. 1a to 1c and FIGS. 4a to 4b show the CO resistance prepared in example 1 of the present invention2Electron micrograph of corroded material.
FIGS. 2 a-2 c show the CO resistance of comparative example 1 of the present invention2Electron micrograph of corroded material.
FIGS. 3 a-3 b show the CO resistance of comparative example 2 of the present invention2Electron micrograph of corroded material.
Detailed Description
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified.
Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Examples 1,
The forsterite, the manganese olivine and the calcium forsterite are mixed according to the weight ratio of 80:5:15, added into a ball milling tank and milled for 6 hours by adopting a ball mill. Drying the ground raw materials, and tabletting the dried raw materials (the pressure is 50KN, the boosting rate is 0.2KN/s, the pressure is maintained for 185s, then the pressure is released, and the pressure is less than or equal to 4.5KN when the pressure is released). And (3) placing the pressed test piece into a crucible, pre-sintering the test piece by using a resistance furnace (the temperature rise and heat preservation processes are room temperature to 850 ℃, the temperature rise time is 45min, the temperature preservation time is 850 ℃, 5min, 850-1250 ℃, the temperature rise time is 30min, the temperature rise time is 1250-1350 ℃, the temperature rise time is 30min and the heat preservation time is 40min), forcibly cooling the pre-sintered product by using cold air, and then carrying out jet milling on the pre-sintered product, wherein the particle size is controlled to be 15-35 mu m. And calcining the crushed pre-sintered product by using a gas spheroidizing furnace, wherein the flame temperature is controlled to be 1500 ℃, and the calcining time is 25 s.The calcined product is immediately subjected to liquid nitrogen quenching to obtain the CO resistance product2A corroded material.
Comparative examples 1,
The invention investigates the effect of only adopting one-step high-temperature calcination: the test piece was placed in a crucible and heated to 1350 ℃ for 40min, and the rest of the conditions were the same as in example 1. The microstructure images (electron micrographs) of the material obtained by the two-step sintering and the one-step high-temperature calcination are shown in fig. 1 and fig. 2, respectively. Comparing fig. 1c and fig. 2b at the same magnification (2000 ×) shows that the particle size of the material obtained by high temperature calcination alone is significantly larger, the samples are not uniform enough and have different shapes. And a two-step sintering method is adopted, as shown in fig. 2c, the sample obtained by the two-step sintering method has high grain growth index and good microstructure uniformity; the sintered body is densified only through grain boundary diffusion, so that the continuity of the grain boundary diffusion can be ensured, the growth speed of crystal grains can be inhibited, and a sample material with both densification and uniformity can be obtained.
Comparative examples 2,
The present invention investigates the effect of not using the quenching step: the conditions and operating steps were the same as in example 1 except that no quenching was used, but the microstructure images (electron micrographs) of the material obtained without quenching and with quenching were shown in fig. 3 and 4, respectively. It can be seen that the grain size of the sample materials prepared by the two methods has large difference; the residual heat after high-temperature calcination can continuously provide heat for related reactions of the powder, so that the target product is changed. As can be seen by comparing the electron microscope images of fig. 3b and fig. 4a, the particles of material produced by the quenching process are smaller and agglomerated together in an agglomerated manner. The material obtained without quenching also has partially spherical particles, but is mostly lamellar, and the surface of the material is smooth; however, most of the samples prepared by the quenching process are spherical and have substantially the same size. The use of a quench process to prepare the sample material can improve the CO resistance2The stability of the corrosion material is avoided, the crystal transformation is avoided, and the CO resistance is ensured2The corroded material has enough internal stress inside, and the purposes that the surface of the material is spherical, has a large number of cracks and the particle size of the product is controllable are achieved.
Examples 2,
The forsterite, the manganese olivine and the calcium forsterite are mixed according to the weight ratio of 85:5:10, added into a ball milling tank and milled for 6 hours by adopting a ball mill. Drying the ground raw materials, and tabletting the dried raw materials (the pressure is 55KN, the boosting rate is 0.2KN/s, the pressure is released after the pressure is maintained for 190s, and the pressure is less than or equal to 4.5KN when the pressure is released). And (3) placing the pressed test piece into a crucible, pre-sintering the test piece by using a resistance furnace (the temperature rise and heat preservation processes are room temperature to 850 ℃, the temperature rise time is 45min, the temperature preservation time is 850 ℃, 10min, the temperature rise time is 850-1250 ℃, the temperature rise time is 30min, the temperature preservation time is 1250-1350 ℃, the temperature rise time is 30min and the heat preservation time is 80min), forcibly cooling the pre-sintered product by using cold air, and then carrying out jet milling on the pre-sintered product, wherein the particle size is controlled to be 15-35 mu m. And calcining the crushed pre-sintered product by using a gas spheroidizing furnace, wherein the flame temperature is controlled to 1550 ℃, and the calcining time is 28 s. The calcined product is immediately subjected to liquid nitrogen quenching to obtain the CO resistance product2A corroded material.
Examples 3,
The forsterite, the manganese olivine and the calcium forsterite are mixed according to the weight ratio of 80:10:10, added into a ball milling tank and milled for 6 hours by adopting a ball mill. Drying the ground raw materials, and tabletting the dried raw materials (the pressure is 65KN, the boosting rate is 0.2KN/s, the pressure is maintained for 200s, then the pressure is released, and the pressure is less than or equal to 4.5KN when the pressure is released). And (3) placing the pressed test piece into a crucible, pre-sintering the test piece by using a resistance furnace (the temperature rise and heat preservation processes are room temperature to 850 ℃, the temperature rise time is 45min, the temperature preservation time is 850 ℃, 20min, the temperature rise time is 850-1250 ℃, the temperature rise time is 30min, the temperature preservation time is 1250-1350 ℃, the temperature rise time is 30min, and the heat preservation time is 120min), forcibly cooling the pre-sintered product by using cold air, and then carrying out jet milling on the pre-sintered product, wherein the particle size is controlled to be 15-35 mu m. And calcining the crushed pre-sintered product by using a gas spheroidizing furnace, wherein the flame temperature is controlled to be 1600 ℃, and the calcining time is 35 s. The calcined product is immediately subjected to liquid nitrogen quenching to obtain the CO resistance product2A corroded material.
TABLE 1 addition of anti-CO2Evaluation of well cementation set cement compressive strength of corrosive materials
TABLE 2 addition of anti-CO2Evaluation of fracture strength of well cementation set cement of corrosive material
The experimental formula of the cement stone corrosion resistance test is as follows: 100 parts of G-grade oil well cement, 0.5 part of dispersing agent USZ (Henan Weihui chemical Co., Ltd.), 2 parts of fluid loss agent G33S (Henan Weihui chemical Co., Ltd.), 0.01 part of oil well cement defoaming agent XP-I (Henan Weihui chemical Co., Ltd.), and CO resistance27 parts by weight of corroded materials and 49 parts by weight of water. Preparing cement paste and curing cement stones according to GB/T19139-2012 oil well cement test method.
As can be seen from the analysis of the experimental results of tables 1 and 2: adding the anti-CO provided by the invention2The strength of the well cementation cement stone with corrosive materials after curing and solidification at 30 ℃, 60 ℃ and 90 ℃ (clear water) accords with the cement strength increase rule; when the well cementation cement stone is at 30 ℃, 60 ℃ and 90 ℃ (CO)2Atmosphere pressure 2MPa) and stable strength of the set cement after curing and solidification under the corrosion condition, and CO resistance is added2The corrosion resistance of the cementing cement stone of the corrosive material is ensured.
Claims (9)
1. CO resistance for oil well cement2The preparation method of the corrosion material comprises the following steps:
s1, mixing forsterite, fayalite and calcium forsterite, and then carrying out ball milling;
s2, drying and tabletting the ball-milled materials in sequence to obtain test pieces;
s3, pre-sintering the test piece, cooling and crushing to obtain powder;
s4, calcining the powder at high temperature, and quenching to obtain the CO resistance2And corroding the material.
2. The method of claim 1, wherein: in step S1, the average grain diameters of the forsterite, the manganese olivine and the calcium-magnesium olivine are all less than or equal to 50 μm;
the mass ratio of the forsterite to the manganese olivine to the calcium-magnesium olivine is 80: 4-15: 5 to 20.
In the above preparation method, in step S2, the tabletting conditions are as follows:
the pressure is 50-65 KN, the boosting rate is 0.2KN/s, the pressure is relieved after 185-200 s of pressure maintaining, and the pressure is less than or equal to 4.5KN during pressure relief.
3. The production method according to claim 1 or 2, characterized in that: in step S3, the pre-sintering step is as follows:
the temperature is between room temperature and 850 ℃, and the heating time is 45-55 min; keeping the temperature at 850 ℃ for 5-20 min; raising the temperature for 30-45 min at 850-1250 ℃; 1250-1350 ℃, the temperature rise time is 30min, and the heat preservation time is 40-120 min;
the cooling mode is natural cooling or wind cooling;
the crushing mode is jet milling, and the particle size of powder subjected to jet milling is 15-35 mu m.
4. The production method according to any one of claims 1 to 3, characterized in that: in step S4, the conditions of the high-temperature calcination are as follows:
the temperature is 1500-1600 ℃, and the time is 20-35 s;
the quenching adopts a liquid nitrogen quenching mode.
5. CO-resistance for oil well cement prepared by the method of any one of claims 1 to 42And corroding the material.
6. anti-CO according to claim 52Preparation of corrosion-resistant material in CO (carbon monoxide) resistance2Application in corroded well cementation set cement;
the well cementation set cement is silicate set cement.
7. anti-CO (carbon monoxide)2Corroded cemented cement, consisting of portland cement and the CO-resistant cement according to claim 52And corroding the material composition.
8. The cemented cement of claim 7, wherein: the anti-CO2The mass percentage of the corrosive material in the portland cement of the portland cement stone is 4-7%.
9. A cemented cement stone according to claim 7 or 8, characterized in that: the silicate cement stone is G-grade oil well cement stone.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115304317A (en) * | 2022-08-25 | 2022-11-08 | 嘉华特种水泥股份有限公司 | Oil well cement slurry system resistant to high-temperature strength degradation |
| CN115304302A (en) * | 2022-08-25 | 2022-11-08 | 嘉华特种水泥股份有限公司 | Is suitable for CO 2 EGS cementing cement admixture and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101679059A (en) * | 2007-05-21 | 2010-03-24 | 国际壳牌研究有限公司 | A process for sequestration of carbon dioxide by mineral carbonation |
| CN101717263A (en) * | 2009-11-24 | 2010-06-02 | 高申明 | Method for preparing forsterite by roasting silicate olivine ore with microwave |
| FR2939429A1 (en) * | 2008-12-10 | 2010-06-11 | Inst Francais Du Petrole | Cementing material for storing carbon dioxide and other acid gases, comprises cement binder, and extra repair material with mineral releasing divalent cations in acidic conditions, where cations react with carbon dioxide to form carbonates |
| CN103553560A (en) * | 2013-10-29 | 2014-02-05 | 新疆华莎能源股份有限公司 | Method for preparing forsterite from olivine ores |
| CN111566069A (en) * | 2017-10-11 | 2020-08-21 | 雷斯通有限公司 | Composition of cement additive materials as additive for cementitious mineral admixtures and use as latent hydraulic binder to enhance the effect of cementitious products |
| CN111603907A (en) * | 2020-05-18 | 2020-09-01 | 武汉理工大学 | Modified magnesium-based absorbent and preparation method thereof |
-
2021
- 2021-12-09 CN CN202111500327.1A patent/CN114213049B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101679059A (en) * | 2007-05-21 | 2010-03-24 | 国际壳牌研究有限公司 | A process for sequestration of carbon dioxide by mineral carbonation |
| FR2939429A1 (en) * | 2008-12-10 | 2010-06-11 | Inst Francais Du Petrole | Cementing material for storing carbon dioxide and other acid gases, comprises cement binder, and extra repair material with mineral releasing divalent cations in acidic conditions, where cations react with carbon dioxide to form carbonates |
| CN101717263A (en) * | 2009-11-24 | 2010-06-02 | 高申明 | Method for preparing forsterite by roasting silicate olivine ore with microwave |
| CN103553560A (en) * | 2013-10-29 | 2014-02-05 | 新疆华莎能源股份有限公司 | Method for preparing forsterite from olivine ores |
| CN111566069A (en) * | 2017-10-11 | 2020-08-21 | 雷斯通有限公司 | Composition of cement additive materials as additive for cementitious mineral admixtures and use as latent hydraulic binder to enhance the effect of cementitious products |
| CN111603907A (en) * | 2020-05-18 | 2020-09-01 | 武汉理工大学 | Modified magnesium-based absorbent and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115304317A (en) * | 2022-08-25 | 2022-11-08 | 嘉华特种水泥股份有限公司 | Oil well cement slurry system resistant to high-temperature strength degradation |
| CN115304302A (en) * | 2022-08-25 | 2022-11-08 | 嘉华特种水泥股份有限公司 | Is suitable for CO 2 EGS cementing cement admixture and preparation method thereof |
| CN115304317B (en) * | 2022-08-25 | 2023-03-31 | 嘉华特种水泥股份有限公司 | Oil well cement slurry system resistant to high-temperature strength degradation |
| CN115304302B (en) * | 2022-08-25 | 2023-04-28 | 嘉华特种水泥股份有限公司 | Suitable for CO 2 Well cementation cement admixture of EGS and preparation method thereof |
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