CN111662696A - Plugging agent and plugging suspension for heavy oil thermal recovery and preparation method thereof - Google Patents
Plugging agent and plugging suspension for heavy oil thermal recovery and preparation method thereof Download PDFInfo
- Publication number
- CN111662696A CN111662696A CN202010496646.9A CN202010496646A CN111662696A CN 111662696 A CN111662696 A CN 111662696A CN 202010496646 A CN202010496646 A CN 202010496646A CN 111662696 A CN111662696 A CN 111662696A
- Authority
- CN
- China
- Prior art keywords
- plugging
- agent
- thermal recovery
- parts
- oil
- 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.)
- Pending
Links
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
- C09K8/50—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
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/592—Compositions used in combination with generated heat, e.g. by steam injection
-
- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/845—Compositions based on water or polar solvents containing inorganic compounds
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention relates to a plugging agent and a plugging suspension for heavy oil thermal recovery and a preparation method thereof, belonging to the technical field of oil recovery. The blocking agent of the invention mainly comprises the following components in parts by weight: 35-50 parts of coal ash, 30-40 parts of a consolidation agent, 10-20 parts of desulfurized gypsum and 5-10 parts of a suspending agent. The plugging agent has simple composition, economy and practicability, low price, high temperature resistance of 350 ℃, suitability for thermal recovery and huff and puff of thickened oil, no influence of crude oil property and water content, good suspension performance, high strength, low cost and good plugging performance; the method is applied to a heavy oil thermal recovery well, and can fill the deficit of a stratum, block a gas channeling channel, inhibit the propulsion of edge water, improve the contradiction of a flat section, improve the steam swept volume and improve the oil production and oil-gas ratio of an oil well; and the coal ash is used as a component, so that the pollution to the environment can be reduced, the environmental protection pressure is reduced, the environmental protection treatment cost is greatly reduced, the plugging and adjusting measure cost is reduced, and the plugging and adjusting measure benefits are effectively improved.
Description
Technical Field
The invention relates to a plugging agent and a plugging suspension for heavy oil thermal recovery and a preparation method thereof, belonging to the technical field of oil recovery.
Background
In the field of heavy oil thermal recovery, a steam huff and puff development technology is widely used, along with the continuous improvement of the steam huff and puff development degree, an oil well enters into high-huff and puff period for exploitation, an oil layer is empty, steam channeling and water channeling are continuously intensified, and the effect of a profile control channeling-sealing measure is deteriorated. Inorganic particle profile control measures and nitrogen foam measures are mainly applied to a certain oil field at present, and in nearly three years, 117 well times of oil layer void treatment measures in a steam channeling area are carried out, and the effective rate is 46.4%; the water flooding area has 99 well times of edge water inhibition measures, and the effective rate is 69.7 percent; the average single well measure investment is 18.5 ten thousand yuan, the operation cost of the profile control and water shutoff measure is high, and the measure benefit is poor. The current profile control technology is adopted, and the space for improving the effective rate of measures and reducing the operation cost of the profile control water shutoff measures is small through process parameter optimization.
In the prior art, chinese patent application with application publication No. CN108048057A discloses a profile control agent and a profile control method, wherein the profile control agent comprises a first system and a second system, and the raw material composition of the first system comprises, by mass, 10-20% of smectite, 10-25% of fly ash, 5-15% of silica, 0.2-0.8% of a modifier, 0.4-1% of a toughening agent, 0.8-2% of an activator, and the balance of water; the second system comprises, by mass, 15-25% of calcium chloride or magnesium chloride, 10-25% of water glass, 5-15% of slag powder, 3-10% of sodium fluosilicate and the balance of water. The profile control method comprises the following steps: injecting the first system into the formation; and then respectively injecting the water solution of calcium chloride or magnesium chloride and the mixed solution of water glass, slag powder and water into the stratum to finish profile control. The profile control agent can block a large pore passage, adjust a steam absorption profile and improve the displacement efficiency of steam after underground reaction, thereby achieving the purposes of improving the steam injection effect and improving the recovery ratio of residual oil. However, the profile control agent is expensive, the profile control process is complex, and the profile control agent is not suitable for large-scale use in old oil fields with high throughput periods.
Disclosure of Invention
The invention aims to provide a low-cost plugging agent for heavy oil thermal recovery.
The invention also provides a low-cost plugging suspension liquid for heavy oil thermal recovery.
The invention also provides a preparation method of the plugging suspension liquid for thick oil thermal recovery, which has a simple process.
In order to realize the purpose, the blocking agent for heavy oil thermal recovery adopts the technical scheme that:
a plugging agent for heavy oil thermal recovery comprises the following components in parts by weight: 35-50 parts of coal ash, 30-40 parts of a consolidation agent, 10-20 parts of desulfurized gypsum and 5-10 parts of a suspending agent.
The plugging agent for the thermal recovery of the thickened oil has simple composition, economy, practicability, low price, capability of resisting the high temperature of 350 ℃, suitability for the thermal recovery huff and puff of the thickened oil, no influence of the property and the water content of the crude oil, good suspension performance, high strength, low cost and good plugging performance; the method is applied to a heavy oil thermal recovery well, and can fill the deficit of a stratum, block a gas channeling channel, inhibit the propulsion of edge water, improve the contradiction of a flat section, improve the steam swept volume and improve the oil production and oil-gas ratio of an oil well; the coal ash is waste generated by coal combustion, and the coal ash is used as a component, so that the pollution to the environment can be reduced, the environment-friendly pressure is reduced, the environment-friendly treatment cost is greatly reduced, the plugging and adjusting measure cost is reduced, and the plugging and adjusting measure benefits are effectively improved; the desulfurized gypsum is waste generated by coal combustion desulfurization treatment, and the desulfurized gypsum can realize waste utilization, change waste into valuable and further reduce the cost of the plugging agent for heavy oil thermal recovery.
The plugging agent for the heavy oil thermal recovery has the advantages that the plugging rate of the sand filling pipe in an indoor test can reach more than 99 percent, the plugging performance is good, and the plugging requirement of a gas (steam) channeling channel is met; the compressive strength can reach more than 3.0MPa, the plugging agent has high strength, and the strength requirements of steam flooding and huff-puff well sealing can be met.
Preferably, the consolidation agent is oil well cement. Further preferably, the consolidating agent is G-grade medium-resistant oil well cement.
The suspending agent used for preparing the plugging agent for the thick oil thermal recovery in the prior art can be used for the plugging agent for the thick oil thermal recovery, and preferably, the bentonite is sodium bentonite.
The technical scheme adopted by the blocking suspension for heavy oil thermal recovery of the invention is as follows:
a plugging suspension for thick oil thermal recovery comprises a dispersant and a plugging agent; the blocking agent comprises the following components in parts by weight: 35-50 parts of coal ash, 30-40 parts of a consolidation agent, 10-20 parts of desulfurized gypsum and 5-10 parts of a suspending agent; the dispersant is oil field sewage; the mass ratio of the dispersing agent to the blocking agent is 1: 0.4-0.7.
The plugging suspension liquid for the thermal recovery of the thickened oil is matched with steam huff and puff, and can be used for plugging and adjusting a depletion well layer on a thickened oil thermal recovery well, so that the flat section contradiction is improved, the steam swept volume is enlarged, the oil production and oil-steam ratio of an oil well is improved, the measure operation cost is reduced, and the plugging and adjusting measure effect and benefit are improved; in particular, the oil field sewage contains oil, has higher viscosity than clear water, and can improve the performance of the plugging agent for heavy oil thermal recovery by taking the oil field sewage as a dispersing agent.
Preferably, the mass ratio of the dispersing agent to the blocking agent is 1: 0.538.
In order to further improve the plugging and conditioning effect and reduce the production cost, preferably, the oil content of the oilfield sewage is 0.8-2.5% (by mass). The suspended solid content of the oilfield sewage is 0.5-2% (by mass).
The suspended solid of the invention is the suspended solid defined in SY/T5329-2012. Preferably, the water content in the oilfield wastewater is 96-98% (by mass).
Preferably, the consolidation agent is oil well cement. Further preferably, the consolidating agent is G-grade medium-resistant oil well cement.
Preferably, the suspending agent is sodium bentonite.
The preparation method of the plugging suspension liquid for thick oil thermal recovery adopts the technical scheme that:
the preparation method of the plugging suspension for thick oil thermal recovery comprises the following steps: and uniformly mixing the coal ash, the consolidation agent, the desulfurized gypsum, the suspending agent and the dispersing agent to obtain the composite material.
The preparation method of the plugging suspension for heavy oil thermal recovery is simple and easy to operate, can be uniformly stirred at normal temperature, and is suitable for industrial production and field application.
Detailed Description
The technical solution of the present invention will be further described with reference to the following embodiments.
Examples of blocking agents for heavy oil thermal recovery
Example 1
The plugging agent for heavy oil thermal recovery of the embodiment comprises the following components in parts by weight: 50 parts of coal ash, 30 parts of consolidation agent, 10 parts of desulfurized gypsum and 10 parts of suspending agent; the adopted consolidation agent is G-grade anti-oil well cement; the suspending agent is sodium bentonite.
The cost is calculated by using coal ash 0.242 yuan/kg, anti-oil well cement 0.83 yuan/kg in G grade, desulfurized gypsum 0.242 yuan/kg and sodium bentonite 0.92 yuan/kg, and the plugging agent for heavy oil thermal recovery in the embodiment is 486.2 yuan/10 yuan3kg, compared with the cost of the profile control agent for the oil field with the high throughput period currently used, the cost is reduced by more than 70%, so that the plugging agent for the heavy oil thermal recovery has lower cost and can be used for the high-period large-dose profile control requirement of the oil well.
Example 2
The plugging agent for heavy oil thermal recovery of the embodiment comprises the following components in parts by weight: 45 parts of coal ash, 30 parts of consolidation agent, 15 parts of desulfurized gypsum and 10 parts of suspending agent; the adopted consolidation agent is G-grade anti-oil well cement; the suspending agent is sodium bentonite.
Example 3
The plugging agent for heavy oil thermal recovery of the embodiment consists of the following components in parts by weight: 35 parts of coal ash, 40 parts of consolidation agent, 15 parts of desulfurized gypsum and 10 parts of suspending agent; the adopted consolidation agent is G-grade anti-oil well cement; the suspending agent is sodium bentonite.
Example 4
The plugging agent for heavy oil thermal recovery of the embodiment comprises the following components in parts by weight: 40 parts of coal ash, 35 parts of consolidation agent, 20 parts of desulfurized gypsum and 5 parts of suspending agent; the adopted consolidation agent is G-grade anti-oil well cement; the suspending agent is sodium bentonite.
Examples of temperature-resistant high blocking agent suspensions
Example 5
The plugging suspension for thick oil thermal recovery of the embodiment consists of a dispersant and the plugging agent for thick oil thermal recovery of the embodiment 1; the mass ratio of the dispersing agent to the plugging agent is 1: 0.538; the adopted dispersant is oilfield sewage, the oilfield sewage contains 1.5 percent (mass) of oil, 1.2 percent (mass) of suspended solid and 97 percent (mass) of water, and the balance is other impurities.
Example 6
The plugging suspension for thick oil thermal recovery of the embodiment consists of a dispersant and the plugging agent for thick oil thermal recovery of the embodiment 2; the mass ratio of the dispersing agent to the plugging agent is 1: 0.538; the adopted dispersant is oil field sewage, the oil content in the oil field sewage is 0.8 percent (mass), the suspended solid content is 2 percent (mass), the water content is 97 percent (mass), and the rest is other impurities.
Example 7
The plugging suspension for thick oil thermal recovery of the embodiment consists of a dispersant and the plugging agent for thick oil thermal recovery of the embodiment 3; the mass ratio of the dispersing agent to the plugging agent is 1: 0.538; the adopted dispersant is oilfield sewage, the oilfield sewage contains 1 percent (mass) of oil, 0.5 percent (mass) of suspended solid and 98 percent (mass) of water, and the balance is other impurities.
Example 8
The plugging suspension for thick oil thermal recovery of the embodiment consists of a dispersant and the plugging agent for thick oil thermal recovery of the embodiment 4; the mass ratio of the dispersing agent to the plugging agent is 1: 0.538; the adopted dispersant is oilfield sewage, wherein the oilfield sewage contains 2.5 percent (mass) of oil, 0.9 percent (mass) of suspended solid, 96 percent (mass) of water and the balance of other impurities.
Examples of preparation of plugging suspensions for thermal recovery of heavy oil
Example 9
The preparation method of the plugging suspension for thick oil thermal recovery of the embodiment comprises the following steps: and (3) sequentially adding the dispersing agent, the coal ash, the consolidation agent, the desulfurized gypsum and the suspending agent into the stirrer, and stirring for 20 minutes at normal temperature to completely and uniformly mix the materials to obtain the cement.
The plugging suspensions for heavy oil thermal recovery of examples 5 to 8 can be prepared by the preparation method of example 9.
Examples of the experiments
1) Test for water separation
The plugging suspensions in examples 5 to 8 (all prepared by the preparation method in example 9) were subjected to a water precipitation experiment, and the suspension performance of the environmentally-friendly low-cost plugging agent for heavy oil thermal recovery was examined, and the water precipitation volume and water precipitation rate of 0.5h are shown in table 1.
TABLE 1 drainage of plugging suspensions of examples 5 to 8
The results of the water-off test shown in table 1 show that: the water separation rate of the plugging suspension liquid for thick oil thermal recovery of the embodiments 5-8 is less than 10% at room temperature, and is more than 30% lower than the water separation rate of the existing profile control agent. Therefore, the plugging agent for heavy oil thermal recovery provided by the invention has good suspension performance and can meet the requirement of deep profile control plugging of an oil layer after high-cycle steam huff and puff of an oil well.
2) Pumpability test
The viscosity of each plugging suspension for heavy oil thermal recovery of examples 5 to 8 (each prepared by the preparation method of example 9) was measured at room temperature, and the results are shown in table 2.
TABLE 2 viscosity of plugging suspensions of examples 5 to 8
| Total mass (g) of suspension | Test concentration (%) | Viscosity of the suspension (mPa. s) | |
| Example 5 | 250 | 35 | 575 |
| Example 6 | 250 | 35 | 562 |
| Example 7 | 250 | 35 | 551 |
| Example 8 | 250 | 35 | 523 |
As can be seen from Table 2, the viscosity of the temperature-resistant plugging suspension of examples 5-8 at normal temperature is less than 575mPa · s, which indicates that the pumpability of the temperature-resistant plugging agent is better and can meet the requirements of profile control construction.
3) Evaluation of initial setting time
The plugging suspensions for heavy oil thermal recovery of examples 5 to 8 (both prepared by the preparation method of example 9) were subjected to a solidification experiment at a test temperature of 60 ℃, held at a constant temperature of 48 hours, and the solidification time was recorded, and the results are shown in table 3.
TABLE 3 clotting times for temperature resistant plugging suspensions of examples 5-8
As can be seen from Table 3, the plugging suspension for heavy oil thermal recovery of the embodiments 5-8 has the initial setting time of more than 16h, the final setting time of more than 24h and long initial setting time at 60 ℃, and reduces the construction safety risk.
4) Evaluation of compressive Strength
The plugging suspensions for thick oil thermal recovery of examples 5 to 8 (all prepared by the preparation method of example 9) were subjected to a compressive strength test to examine the compressive strength of the plugging agent for thick oil thermal recovery after solidification.
The experimental method comprises the following steps: putting 3 steel pipes with phi of 25.3mm multiplied by 55.3mm and coated with butter inside into a 300mL beaker, then pouring 300mL of the plugging suspension for thick oil thermal recovery of the embodiment 5-8 into the 300mL beaker, sealing the beaker by using a preservative film, placing the sealed beaker in a constant temperature water bath at 60 ℃ for constant temperature for 3d, taking out 3 steel pipes with phi of 25.3mm multiplied by 56mm, ejecting a solidified body in the steel pipes by using a compression strength tester screw rod, grinding two end faces, and testing the compression strength of the solidified body by using a compression strength tester, wherein the test results are shown in Table 4:
TABLE 4 compressive Strength of plugging suspension consolidated bodies of examples 5 to 8
As can be seen from Table 4, the plugging suspension for heavy oil thermal recovery in examples 5 to 8 has compressive strength of 3.0MPa or more after consolidation, has high compressive strength, and can meet the strength requirements of steam flooding and huff-puff well plugging.
5) Evaluation of temperature resistance
High temperature resistance experiments were performed on the plugging suspensions for thick oil thermal recovery of examples 5 to 8 (both prepared by the preparation method of example 9), respectively, the plugging suspension for thick oil thermal recovery was kept at a constant temperature of 60 ℃ for 72 hours to obtain a plugging agent solidification body for thick oil thermal recovery, the plugging agent solidification body for thick oil thermal recovery was maintained at 350 ℃ for 8 hours, and the dimensions of the plugging agent solidification body for thick oil thermal recovery before and after maintenance were measured, with the results shown in table 5.
TABLE 5 external dimensions of the consolidation bodies of the plugging suspensions of examples 5 to 8 before and after temperature resistance
6) Evaluation of plugging Rate
The plugging suspensions for thick oil thermal recovery in examples 5 to 8 (all prepared by the preparation method in example 9) were subjected to sand-packed pipe simulation experiments (the experimental method refers to the oil industry standard SY/T5590-plus 2004), and the permeability change conditions of the sand-packed pipe before and after the plugging suspension for thick oil thermal recovery were examined, and the results are shown in Table 6.
TABLE 6 plugging Effect of plugging suspensions for heavy oil thermal recovery of examples 5 to 8
The experimental results of table 6 show that: the plugging agent for heavy oil thermal recovery of the embodiments 5 to 8 has strong stratum plugging capability, the effective plugging rate can reach more than 99%, and the plugging effect is good.
Claims (10)
1. A plugging agent for thick oil thermal recovery is characterized in that: the composition comprises the following components in parts by weight: 35-50 parts of coal ash, 30-40 parts of a consolidation agent, 10-20 parts of desulfurized gypsum and 5-10 parts of a suspending agent.
2. The plugging agent for heavy oil thermal recovery according to claim 1, wherein: the consolidation agent is oil well cement.
3. The plugging agent for heavy oil thermal recovery according to claim 2, wherein: the consolidating agent is G-grade medium-resistant oil well cement.
4. The plugging agent for thick oil thermal recovery according to any one of claims 1 to 3, wherein the plugging agent comprises: the suspending agent is sodium bentonite.
5. A plugging suspension for thick oil thermal recovery is characterized in that: comprises a dispersant and a plugging agent; the blocking agent comprises the following components in parts by weight: 35-50 parts of coal ash, 30-40 parts of a consolidation agent, 10-20 parts of desulfurized gypsum and 5-10 parts of a suspending agent; the dispersant is oil field sewage; the mass ratio of the dispersing agent to the blocking agent is 1: 0.4-0.7.
6. Plugging suspension for heavy oil thermal recovery according to claim 5, characterized in that: the oil content of the oilfield sewage is 0.8-2.5%, and the content of suspended solids is 0.5-2%.
7. Plugging suspension for heavy oil thermal recovery according to claim 5, characterized in that: the consolidation agent is oil well cement.
8. Plugging suspension for heavy oil thermal recovery according to claim 7, characterized in that: the consolidating agent is G-grade medium-resistant oil well cement.
9. The plugging suspension for heavy oil thermal recovery according to any one of claims 5 to 8, wherein: the suspending agent is sodium bentonite.
10. A method for preparing a plugging suspension for heavy oil thermal recovery as claimed in claim 5, characterized in that: the method comprises the following steps: and uniformly mixing the coal ash, the consolidation agent, the desulfurized gypsum, the suspending agent and the dispersing agent to obtain the composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010496646.9A CN111662696A (en) | 2020-06-03 | 2020-06-03 | Plugging agent and plugging suspension for heavy oil thermal recovery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010496646.9A CN111662696A (en) | 2020-06-03 | 2020-06-03 | Plugging agent and plugging suspension for heavy oil thermal recovery and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111662696A true CN111662696A (en) | 2020-09-15 |
Family
ID=72385957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010496646.9A Pending CN111662696A (en) | 2020-06-03 | 2020-06-03 | Plugging agent and plugging suspension for heavy oil thermal recovery and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111662696A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353570A (en) * | 2008-09-03 | 2009-01-28 | 中国石油新疆油田分公司采油工艺研究院 | Heavy crude thermal recovery steamed well slag plugging agent |
| CN102391845A (en) * | 2011-09-13 | 2012-03-28 | 任丘市华北石油通运石油机械有限公司 | Composite chemical blocking agent |
| CN105062442A (en) * | 2015-08-11 | 2015-11-18 | 中国石油化工股份有限公司 | Thickened oil thermal recovery channeling sealing agent, channeling sealing agent thick liquid, preparation method of thick liquid and thickened oil thermal recovery profile control channeling sealing method |
| CN111073614A (en) * | 2018-10-18 | 2020-04-28 | 中国石油天然气股份有限公司 | Inorganic composite profile control and plugging agent and preparation method thereof |
-
2020
- 2020-06-03 CN CN202010496646.9A patent/CN111662696A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353570A (en) * | 2008-09-03 | 2009-01-28 | 中国石油新疆油田分公司采油工艺研究院 | Heavy crude thermal recovery steamed well slag plugging agent |
| CN102391845A (en) * | 2011-09-13 | 2012-03-28 | 任丘市华北石油通运石油机械有限公司 | Composite chemical blocking agent |
| CN105062442A (en) * | 2015-08-11 | 2015-11-18 | 中国石油化工股份有限公司 | Thickened oil thermal recovery channeling sealing agent, channeling sealing agent thick liquid, preparation method of thick liquid and thickened oil thermal recovery profile control channeling sealing method |
| CN111073614A (en) * | 2018-10-18 | 2020-04-28 | 中国石油天然气股份有限公司 | Inorganic composite profile control and plugging agent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104277803A (en) | KCl blocking and anti-sloughing drilling fluid and preparation method thereof | |
| CN102796498A (en) | Foam drilling fluid | |
| CN111116113B (en) | Oil well cement composition and application thereof | |
| CN103074044B (en) | Oil well cement additive used for preventing H2S/CO2 co-corrosion, and preparation method and application thereof | |
| CN112778983A (en) | While-drilling plugging agent, preparation method of while-drilling plugging agent and application of while-drilling plugging agent in water-based drilling fluid | |
| CN116396731B (en) | Hydrophobic association high-performance water-based drilling fluid for shale stratum and preparation method and application thereof | |
| CN102504780A (en) | Cement capable of resisting CO2 corrosion for well cementation | |
| CN112094091A (en) | Large-temperature-difference low-heat-conductivity cement slurry suitable for long-sealing-section well cementation | |
| CN111087998A (en) | Slow-expansion particles and preparation method thereof | |
| CN106336860B (en) | High-temperature-resistant corrosion-resistant oil well cement material, preparation method and application | |
| Wen et al. | Experimental study and application of inorganic solidified foam filling material for coal mines | |
| CN103045215B (en) | Aluminate cement-based carbon dioxide corrosion resistant cement system for cementing of well | |
| CN103922659B (en) | Anti-under water dispersion mortar for large area cavity grouting and preparation method thereof | |
| CN112456878B (en) | CO2-EGS mode high-temperature corrosion-resistant well cementation cement for hot and dry rock | |
| CN105018053A (en) | Recyclable micro-foam drilling fluid and preparation method therefor | |
| CN111087997A (en) | Method for blocking water in oil reservoir and oil well | |
| CN110240430B (en) | Expansive fiber anti-cracking waterproof agent for concrete and preparation method thereof | |
| CN105255464A (en) | High-temperature-resistant cementing material system | |
| CN111662696A (en) | Plugging agent and plugging suspension for heavy oil thermal recovery and preparation method thereof | |
| CN107216071A (en) | A kind of deep geothermal heat well low-temperature zone well cementation insulating cement slurry and preparation method thereof | |
| CN114479789B (en) | High-temperature high-pressure expandable plugging agent composition, preparation method and application thereof | |
| CN114873966B (en) | Hole-sealing solidifying expansion material for mine | |
| Li et al. | Synergy between suspending agent and air entraning agent in cement slurry | |
| CN113429163A (en) | Cement composition for well cementation operation, cement slurry system and preparation method thereof | |
| CN113307586A (en) | Preparation and application method of inorganic gelled oil-water well plugging material |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200915 |