CN108343412B - Treating agent for improving steam flooding or steam huff and puff heating efficiency of super heavy oil and preparation method and application thereof - Google Patents
Treating agent for improving steam flooding or steam huff and puff heating efficiency of super heavy oil and preparation method and application thereof Download PDFInfo
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- CN108343412B CN108343412B CN201810143159.7A CN201810143159A CN108343412B CN 108343412 B CN108343412 B CN 108343412B CN 201810143159 A CN201810143159 A CN 201810143159A CN 108343412 B CN108343412 B CN 108343412B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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- 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
Abstract
The invention relates to the technical field of thickened oil recovery enhancement, in particular to a treating agent for enhancing steam flooding or steam huff and puff heating efficiency of super thickened oil, a preparation method and application thereof. According to the invention, the treating agent for improving the steam flooding or steam huff and puff heating efficiency is added in the steam flooding or steam huff and puff process, so that the swept range of the steam flooding or steam huff and puff can be improved, the heating efficiency of steam in an oil layer is improved, and the recovery ratio of the steam flooding or steam huff and puff developed by injecting steam into the super heavy oil is improved.
Description
Technical Field
The invention relates to the technical field of thickened oil recovery enhancement, in particular to a treating agent for enhancing steam flooding or steam huff and puff heating efficiency of super thickened oil, and a preparation method and application thereof.
Background
The super heavy oil is different from the conventional crude oil in viscosity, the heavy oil resource in the world is extremely rich, the geological reserve of the super heavy oil far exceeds the reserve of the conventional crude oil, and the geological reserve of the conventional crude oil which is proved in the world is 4200x10 according to statistics8Ton, and the geological storage volume of heavy oil reservoir is as high as 15500x108t, the thickened oil resources in China are quite rich, and the national super-thickened oil is predictedThe reserves are 80x108Above t, the super heavy oil resource is a huge potential resource in China, and plays an increasingly important role in the stable production of crude oil in the future.
At present, the most conventional exploitation mode of the super heavy oil is steam injection development, four areas are formed around a stratum after steam is injected into a shaft, and the stratum from the vicinity of a wellhead to a deep place sequentially comprises a steam zone, a mixed zone, a hot water zone and a cold water zone. The steam throughput and the exploitation effect of steam flooding are directly dependent on the heat energy utilization degree of injected steam, and the conventional steam can only heat the range of the radius of 25m-35m of an oil well, so that the effective heating of an oil layer by the injected steam is a key and difficult point for applying the technology. Production practice and numerical simulation show that by adding a gasifiable chemical agent into steam, substances generated by the chemical agent through steam gasification can carry the steam to accelerate the permeation to formation pores, and the steam heating radius can be enlarged by 5-10%, namely the oil well heating radius is enlarged to be within the range of 30-38 m. In site construction, problems of high viscosity of super heavy oil, high injection pressure and ineffective diffusion of steam are involved, and the steam absorption amount of a stratum is unevenly distributed along a shaft, so that steam sweep efficiency is low, and the area of an oil layer which is not swept is large, and therefore steam heat transfer efficiency and action distance need to be effectively improved.
Disclosure of Invention
The invention provides a treating agent for improving steam flooding or steam huff and puff heating efficiency of super heavy oil, a preparation method and application thereof, overcomes the defects of the prior art, and can effectively solve the problems of small spread range of steam flooding or steam huff and puff, low steam heating efficiency and low recovery ratio of super heavy oil steam flooding development in the existing super heavy oil steam flooding or steam huff and puff.
One of the technical schemes of the invention is realized by the following measures: a treating agent for improving steam flooding or steam huff and puff heating efficiency of super heavy oil is prepared from alcohol amine substances including more than one of monoethanolamine, diethanolamine, N-methyldiethanolamine, diisopropylethanolamine, diisopropanolamine, diglycolamine and triethanolamine.
The following is a further optimization or/and improvement of one of the above-mentioned technical solutions of the invention:
the alcohol amine substance comprises more than one of monoethanolamine, diethanolamine and N-methyldiethanolamine.
The raw materials also comprise water, wherein the mass percent of the alcohol amine substances is 1-70%, and the balance is water.
The mass percent of the alcohol amine substance is 5-20%, and the balance is water.
The treating agent for improving the steam flooding or steam huff and puff heating efficiency of the super heavy oil is obtained according to the following method: the alcohol amine substance is mixed with water or water vapor to obtain the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the super-thick oil.
The temperature of the water vapor is 100 to 350 ℃.
The second technical scheme of the invention is realized by the following measures: a preparation method of a treating agent for improving steam flooding or steam huff and puff heating efficiency of super heavy oil is carried out according to the following steps: the alcohol amine substance is mixed with water or water vapor to obtain the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the super-thick oil.
The following is further optimization or/and improvement of the second technical scheme of the invention:
the temperature of the water vapor is 100 to 350 ℃.
The third technical scheme of the invention is realized by the following measures: the application of the treating agent for improving the heating efficiency of steam flooding or steam huff and puff of the super heavy oil in improving the sweep range of the steam flooding or steam huff and puff.
The fourth technical scheme of the invention is realized by the following measures: the application of alcohol amine substances in the aspect of improving the spread range of steam flooding or steam huff and puff after being used as the treating agent for improving the heating efficiency of steam flooding or steam huff and puff of the super heavy oil.
According to the invention, the treating agent for improving the steam flooding or steam huff and puff heating efficiency is added in the steam flooding or steam huff and puff process, so that the swept range of the steam flooding or steam huff and puff can be improved, the heating efficiency of steam in an oil layer is improved, and the recovery ratio of the steam flooding or steam huff and puff developed by injecting steam into the super heavy oil is improved.
Drawings
FIG. 1 is a schematic diagram of a steam flooding heat transfer core experimental device in the invention.
FIG. 2 is a graph of the temperature of monoethanolamine-assisted water vapor enhanced heat transfer (No. 1 temperature sensor) at different times.
FIG. 3 is a graph of the temperature of monoethanolamine-assisted water vapor enhanced heat transfer (2 # temperature sensor) at different times in accordance with the present invention.
FIG. 4 is a graph showing different time-temperature curves of the enhanced heat transfer of N-methyldiethanolamine assisted water vapor (1 # temperature sensor).
FIG. 5 is a graph showing different time-temperature curves of the enhanced heat transfer (2 # temperature sensor) of N-methyldiethanolamine assisted water vapor in the present invention.
FIG. 6 is a graph of different time-temperature curves of enhanced heat transfer by diethanolamine auxiliary water vapor (No. 1 temperature sensor).
FIG. 7 is a graph of different time-temperature curves of enhanced heat transfer by diethanolamine auxiliary water vapor (No. 2 temperature sensor) in the present invention.
FIG. 8 is a graph showing different time-temperature curves of enhanced heat transfer (1 # temperature sensor) by water vapor assisted by mixed alcohol amine of N-methyldiethanolamine and diethanolamine in the present invention.
FIG. 9 is a graph showing different time-temperature curves of enhanced heat transfer (2 # temperature sensor) by water vapor assisted by mixed alcohol amine of N-methyldiethanolamine and diethanolamine in the present invention.
The codes in fig. 1 are respectively: 1 is the displacement pump, 2 is the chemical agent bottle, 3 is steam generator, 4 is the non-condensate gas steel bottle, 5 is 1# temperature sensor, 6 is 2# temperature sensor, 7 is the rock core system, 8 is the backpressure valve, 9 is the condensation collector.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention. The various chemical reagents and chemical articles mentioned in the invention are all the chemical reagents and chemical articles which are well known and commonly used in the prior art, unless otherwise specified; the percentages in the invention are mass percentages unless otherwise specified; the solution in the present invention is an aqueous solution in which the solvent is water, for example, a hydrochloric acid solution is an aqueous hydrochloric acid solution, unless otherwise specified; the normal temperature and room temperature in the present invention generally mean a temperature of 15 ℃ to 25 ℃, and are generally defined as 25 ℃.
The invention is further described below with reference to the following examples:
example 1: the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the super heavy oil adopts alcohol amine substances as raw materials, wherein the alcohol amine substances comprise more than one of monoethanolamine, diethanolamine, N-methyldiethanolamine, diisopropylethanolamine, diisopropanolamine, diglycolamine and triethanolamine.
Example 2: as optimization of the above embodiment, the alcohol amine substance includes one or more of monoethanolamine, diethanolamine, and N-methyldiethanolamine.
Example 3: as optimization of the embodiment, the raw material also comprises water, the mass percent of the alcohol amine substance is 1-70%, and the balance is water.
Example 4: as optimization of the above embodiment, the mass percent of the alcamines is 5% to 20%, and the balance is water.
Example 5: as optimization of the embodiment, the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the super heavy oil is obtained according to the following method: the alcohol amine substance is mixed with water or water vapor to obtain the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the super-thick oil.
Example 6: as an optimization of the above embodiment, the water vapor temperature is 100 ℃ to 350 ℃.
Example 7: : the preparation method of the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the super heavy oil is carried out according to the following method: the alcohol amine substance is mixed with water or water vapor to obtain the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the super-thick oil.
Example 8: as an optimization of example 7, the steam temperature is from 100 ℃ to 350 ℃.
Example 9: the treating agent for improving the heating efficiency of the steam flooding or steam huff and puff of the super heavy oil is applied to improving the swept range of the steam flooding or steam huff and puff.
Example 10: the alcohol amine substance is applied to the treating agent for improving the heating efficiency of the steam flooding or steam huff and puff of the super heavy oil in the embodiment and then is applied to the aspect of improving the swept range of the steam flooding or steam huff and puff.
When water containing the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the super-heavy oil is heated, the water can be changed into water vapor, when the heating temperature is equal to or higher than the boiling point of more than one alcohol amine substance of monoethanolamine, diethanolamine, N-methyldiethanolamine, diisopropylethanolamine, diisopropanolamine, diglycolamine or triethanolamine, the alcohol amine substance can be changed into a vapor state and is mixed with the water vapor to form water vapor containing volatile gas of the alcohol amine substance, and the water vapor containing the volatile gas of the alcohol amine substance enters a heavy oil layer under the condition of a high-pressure pump, so that the spread range of the steam flooding or steam huff and puff can be improved; or the water vapor containing the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the super heavy oil enters the heavy oil layer under the condition of a high-pressure pump, so that the swept range of the steam flooding or steam huff and puff can be improved.
Test experiments
The steam-drive heat transfer rock core experimental device mainly comprises an injection system, a rock core system 7, a production system and the like, and is shown in figure 1. The injection system consists of a displacement pump 1, a chemical agent bottle 2, a steam generator 3 and a non-condensable gas steel bottle 4; the core system 7 is cylindrical, 50cm long and 50cm in diameter and consists of a steam channel, ceramic particles and two temperature sensors, namely a 1# temperature sensor 5 and a 2# temperature sensor 6, wherein the distance between the 1# temperature sensor 5 and the center line of the core system 7 is 15cm, and the distance between the 2# temperature sensor 6 and the center line of the core system 7 is 25 cm; the extraction system mainly consists of a condensation collector 9. When the temperature and the pressure in the steam generator reach the temperature and the pressure required by the experiment, a rock core inlet valve is opened, a displacement pump 1 for the alcohol amine substance is opened at the same time, the alcohol amine substance is input at the speed of 0.5ml per minute, the oil amine substance and the displacement pump are mixed in a manifold to form mixed gas, then a back pressure valve 8 at a rock core outlet is opened, and the temperature changes of a 1# temperature sensor 5 and a 2# temperature sensor 6 in different time periods are measured. Fig. 1 is a schematic diagram of a steam flooding heat transfer core experimental device.
Through the test experiment, after the alcohol amine substance is mixed with water vapor, when the temperature of the vapor generator 3 reaches 280-300 ℃, and the pressure reaches 4.8-5 MPa, the displacement device is started, and the temperatures of the 1# temperature sensor and the 2# temperature sensor in different time periods are measured.
The temperature sensor 5 needs 550 seconds to 650 seconds of heating time when the temperature is 95 ℃ to 105 ℃; when the heating time is 900 seconds to 1100 seconds, the temperature of the 1# temperature sensor 5 is 130 ℃ to 170 ℃ when the alcohol amine substance and the water vapor are mixed and injected.
The temperature sensor 6 displays that the temperature is 95-105 ℃, and the heating time is 1000-1100 seconds; when the heating time is 900 seconds to 1100 seconds, the temperature of the 2# temperature sensor 6 is 70 ℃ to 110 ℃ when the alcohol amine substance and the water vapor are mixed and injected.
The specific experimental examples are as follows:
experimental example 1: after the monoethanolamine chemical agent was mixed with water vapor, the displacement device was turned on when the temperature of the vapor generator 3 reached 300 ℃ and the pressure reached 5MPa, and the temperatures of the 1# temperature sensor and the 2# temperature sensor were measured at different periods of time and compared with pure water vapor without monoethanolamine, and the comparison results are shown in fig. 2 and 3.
In fig. 2, when only steam is injected, the heating time required for the 1# temperature sensor 5 to reach a temperature of 100 ℃ is 820 seconds, and after monoethanolamine chemical is mixed with water vapor and injected, the heating time required for the 1# temperature sensor 5 to reach a temperature of 100 ℃ is 620 seconds; under the same heating time, for example, when the heating time is 1000 seconds, when only steam is injected, the temperature of the 1# temperature sensor 5 is 120 ℃, and when monoethanolamine chemical is injected in a mixed manner with steam, the temperature of the 1# temperature sensor 5 is 143.36 ℃.
In fig. 3, when only steam is injected, the heating time required for the 2# temperature sensor 6 to show a temperature of 100 ℃ is 1380 seconds, and after monoethanolamine chemical is mixed with water vapor and injected, the heating time required for the 2# temperature sensor 6 to show a temperature of 100 ℃ is 1060 seconds; under the same heating time, for example, when the heating time is 1000 seconds, the temperature of the 2# temperature sensor 6 is 29 ℃ when only steam is injected, and when monoethanolamine chemical is injected in a mixed manner with steam, the temperature of the 2# temperature sensor 6 is 81.76 ℃.
The results of fig. 2 and 3 show that the mixed steam temperature formed by water and monoethanolamine, which is displayed by the 1# temperature sensor 5 and the 2# temperature sensor 6, is far higher than the pure water steam heating temperature in the core system at different time periods, particularly at the later stage. Therefore, the mixed steam of monoethanolamine added to water can improve the sweep range of steam throughput or steam flooding.
Experimental example 2: after the chemical agent of N-methyldiethanolamine is mixed with the water vapor, when the temperature of the steam generator 3 reaches 300 ℃ and the pressure reaches 5MPa, the displacement device is started, the temperatures of the 1# temperature sensor 5 and the 2# temperature sensor at different time periods are measured and compared with the pure water vapor without the N-methyldiethanolamine, and the comparison results are shown in fig. 4 and 5.
In fig. 4, when only steam is injected, the heating time required for the 1# temperature sensor 5 to reach a temperature of 100 ℃ is 820 seconds, and after the N-methyldiethanolamine chemical agent is mixed and injected with the steam, the heating time required for the 1# temperature sensor 5 to reach a temperature of 100 ℃ is 620 seconds; under the same heating time, for example, when the heating time is 1000 seconds, when only steam is injected, the temperature of the 1# temperature sensor 5 is 120 ℃, and when the N-methyldiethanolamine chemical agent is injected in a mixed manner with the steam, the temperature of the 1# temperature sensor 5 is 131 ℃.
In fig. 5, when only steam is injected, the heating time required for the 2# temperature sensor 6 to reach 100 ℃ is 1380 seconds, and after the N-methyldiethanolamine chemical is mixed with steam and injected, the heating time required for the 2# temperature sensor 6 to reach 100 ℃ is 1100 seconds; under the same heating time, for example, when the heating time is 1000 seconds, the temperature of the 2# temperature sensor 6 is 29 ℃ when only steam is injected, and the temperature of the 2# temperature sensor 6 is 73 ℃ when the N-methyldiethanolamine chemical agent is injected in a mixed manner with the steam.
The results of fig. 4 and 5 show that the mixed steam temperature formed by water and N-methyldiethanolamine, which is displayed by the 1# temperature sensor 5 and the 2# temperature sensor 6 at different time periods, particularly at the later stage, is far higher than the pure water steam heating temperature in the core system. Therefore, the mixed steam formed by adding the N-methyldiethanolamine into the water can improve the spread range of the steam flooding or the steam throughput.
Experimental example 3: after the diethanolamine chemical agent is mixed with the water vapor, when the temperature of the steam generator 3 reaches 300 ℃ and the pressure reaches 5MPa, the displacement device is started, the temperatures of the 1# temperature sensor 5 and the 2# temperature sensor in different periods are measured and compared with the pure water vapor without diethanolamine, and the comparison results are shown in fig. 6 and fig. 7.
In fig. 6, when only steam is injected, the heating time required for the 1# temperature sensor 5 to display a temperature of 100 ℃ is 820 seconds, and after the diethanolamine chemical is mixed and injected with the steam, the heating time required for the 1# temperature sensor 5 to display a temperature of 100 ℃ is 670 seconds; under the same heating time, for example, when the heating time is 1000 seconds, the temperature of the 1# temperature sensor 5 is 120 ℃ when only steam is injected, and when the diethanolamine chemical agent is injected in a mixed manner with steam, the temperature of the 1# temperature sensor 5 is 131.89 ℃.
In fig. 7, when only steam is injected, the heating time required for the 2# temperature sensor 6 to show a temperature of 100 ℃ is 1380 seconds, and after the diethanolamine chemical is mixed and injected with steam, the heating time required for the 2# temperature sensor 6 to show a temperature of 100 ℃ is 1080 seconds; under the same heating time, for example, when the heating time is 1000 seconds, the temperature of the 2# temperature sensor 6 is 29 ℃ when only steam is injected, and the temperature of the 2# temperature sensor 6 is 75.22 ℃ when the diethanolamine chemical is injected in a mixed manner with the steam.
The results of fig. 6 and 7 show that the mixed steam temperature formed by water and diethanolamine, which is displayed by the 1# temperature sensor 5 and the 2# temperature sensor 6, is much higher than the pure water steam heating temperature in the core system at different time periods, particularly at the later stage. Thus, the mixed steam of diethanolamine with water can increase the sweep range of steam flooding or steam throughput.
Experimental example 4: mixing the components in a weight ratio of 1: after the N-methyldiethanolamine and diethanolamine agents 1 are mixed with the water vapor, when the temperature of the steam generator 3 reaches 300 ℃ and the pressure reaches 5MPa, the displacement device is started, the temperatures of the 1# temperature sensor 5 and the 2# temperature sensor at different periods are measured and compared with the pure water vapor without the mixed agents of the N-methyldiethanolamine and diethanolamine, and the comparison results are shown in fig. 8 and fig. 9.
In fig. 8, when only steam is injected, the heating time required for the 1# temperature sensor 5 to reach a temperature of 100 ℃ is 820 seconds, and after the N-methyldiethanolamine and the diethanolamine agent are mixed and injected with the steam, the heating time required for the 1# temperature sensor 5 to reach a temperature of 100 ℃ is 610 seconds; under the same heating time, for example, when the heating time is 1000 seconds, when only steam is injected, the temperature of the 1# temperature sensor 5 is 120 ℃, and when the N-methyldiethanolamine and diethanolamine agents are injected in a mixed manner with the steam, the temperature of the 1# temperature sensor 5 is 159.3 ℃.
In fig. 9, when only steam is injected, the heating time required for the 2# temperature sensor 6 to reach 100 ℃ is 1380 seconds, and after the N-methyldiethanolamine and diethanolamine mixed chemical is injected in a mixed manner with steam, the heating time required for the 2# temperature sensor 6 to reach 100 ℃ is 1100 seconds; under the same heating time, for example, when the heating time is 1000 seconds, the temperature of the 2# temperature sensor 6 is 29 ℃ when only steam is injected, and the temperature of the 2# temperature sensor 6 is 73.92 ℃ when the chemical mixture of N-methyldiethanolamine and diethanolamine and steam are injected.
The results of fig. 8 and 9 show that the mixed steam temperature formed by the mixed medicament of water, N-methyldiethanolamine and diethanolamine, which is displayed by the 1# temperature sensor 5 and the 2# temperature sensor 6, is much higher than the pure water steam heating temperature in the core system at different time periods, particularly at the later stage. Therefore, the mixed steam formed by adding the N-methyldiethanolamine and diethanolamine mixed agent into water can also improve the spread range of steam flooding or steam throughput.
In conclusion, the treating agent for improving the steam flooding or steam huff and puff heating efficiency by adding the super heavy oil in the steam flooding or steam huff and puff process can improve the swept range of the steam flooding or steam huff and puff and improve the heating efficiency of the steam in the oil layer, thereby improving the recovery ratio of the super heavy oil steam injection development steam flooding or steam huff and puff.
The technical characteristics form an embodiment of the invention, which has strong adaptability and implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (8)
1. The treating agent for improving the heating efficiency of steam flooding or steam huff and puff of the super heavy oil is characterized in that the raw material is alcohol amine substances, and the alcohol amine substances comprise more than one of monoethanolamine, diethanolamine, N-methyldiethanolamine, diisopropylethanolamine, diisopropanolamine, diglycolamine and triethanolamine.
2. The treating agent for improving the steam flooding or steam huff and puff heating efficiency of the ultra-thick oil as claimed in claim 1, wherein the raw material further comprises water, the mass percent of the alcohol amine substance is 1-70%, and the balance is water.
3. The treating agent for improving steam flooding or steam huff and puff heating efficiency of ultra-thick oil as claimed in claim 2, wherein the mass percent of the alcohol amine substance is 5-20%, and the balance is water.
4. The agent for treating ultra-thick oil to improve steam flooding or steam huff and puff heating efficiency according to claim 1, 2 or 3, wherein the agent is obtained by the following method: the alcohol amine substance is mixed with water or water vapor to obtain the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the super-thick oil.
5. The treating agent for improving steam flooding or steam huff and puff heating efficiency of ultra-thick oil as claimed in claim 4, wherein the temperature of the steam is 100 ℃ to 350 ℃.
6. A method for preparing the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the ultra-thick oil according to claim 1, 2 or 3, which is characterized by comprising the following steps: the alcohol amine substance is mixed with water or water vapor to obtain the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the super-thick oil.
7. The method for preparing the treating agent for improving the steam flooding or steam huff and puff heating efficiency of the ultra-thick oil as claimed in claim 6, wherein the temperature of the steam is 100 ℃ to 350 ℃.
8. Use of the ultra-thick oil treatment agent for improving steam flooding or steam stimulation heating efficiency according to claim 1, 2, 3, 4 or 5 in improving the swept range of steam flooding or steam stimulation.
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| US6305472B2 (en) * | 1998-11-20 | 2001-10-23 | Texaco Inc. | Chemically assisted thermal flood process |
| US7938183B2 (en) * | 2008-02-28 | 2011-05-10 | Baker Hughes Incorporated | Method for enhancing heavy hydrocarbon recovery |
| CN104399404B (en) * | 2014-11-25 | 2015-12-09 | 刘国清 | A kind of manufacture of surfactant and application process |
| CN105112038B (en) * | 2015-08-25 | 2018-08-10 | 中国石油化工股份有限公司 | It is a kind of with steam emulsifying and viscosity-reducing agent for condensed oil and preparation method thereof, application method |
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