CN108084981B - High-temperature-resistant foaming agent and preparation method and application thereof - Google Patents
High-temperature-resistant foaming agent and preparation method and application thereof Download PDFInfo
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- CN108084981B CN108084981B CN201711228994.2A CN201711228994A CN108084981B CN 108084981 B CN108084981 B CN 108084981B CN 201711228994 A CN201711228994 A CN 201711228994A CN 108084981 B CN108084981 B CN 108084981B
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- temperature
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- caustic soda
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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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
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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
- C09K8/02—Well-drilling compositions
- C09K8/38—Gaseous or foamed well-drilling compositions
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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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
-
- 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
- C09K8/594—Compositions used in combination with injected gas, e.g. CO2 orcarbonated gas
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams
-
- 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
-
- 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
Abstract
The invention relates to the technical field of high-temperature-resistant foaming agents for petroleum exploration and exploitation, in particular to a high-temperature-resistant foaming agent and a preparation method and application thereof. The high-temperature-resistant foaming agent disclosed by the invention is mainly characterized by being capable of resisting the high temperature of 300 ℃ and effectively solving the problem that the foaming capacity of the conventional commercial foaming agent is lost at the high temperature (about 200 ℃). The foaming agent has the advantages of wide raw material source, simple and convenient preparation method, no generation of by-products and no environmental pollution.
Description
Technical Field
The invention relates to the technical field of high-temperature-resistant foaming agents for oil exploration and exploitation, in particular to a high-temperature-resistant foaming agent and a preparation method and application thereof.
Background
In petroleum exploration, foam drilling fluid is used for drilling, and the aims of realizing near-balance drilling, leakage prevention, improvement of mechanical drilling speed and the like are fulfilled; in oil exploitation, foam fluid is also used for well washing, profile control and water plugging, oil displacement and the like, and the aim is to improve the recovery rate of crude oil. The highest temperature of the foam drilling fluid and the foam fluid, which is the highest downhole temperature of drilling and production operations, is usually not more than 150 ℃, and most of the conventional commercial foaming agents can meet the requirements.
Heavy oil and thick oil are extracted from oil fields of Xinjiang, Liaohe, victory and the like, at present, the heavy oil and the thick oil are mainly extracted in a mode of reducing the viscosity of the heavy oil and the thick oil by injecting high-temperature steam, and a conventional commercial foaming agent loses foaming capacity at a high temperature (about 200 ℃) and cannot meet the requirement of high-temperature steam foam flooding, so that the underground extraction temperature reaches 300 ℃, and a high-temperature resistant foaming agent must be used.
Disclosure of Invention
The invention provides a high-temperature-resistant foaming agent, a preparation method and application thereof, overcomes the defects of the prior art, and can effectively solve the problem that the conventional commercial foaming agent loses foaming capacity at high temperature (about 200 ℃).
One of the technical schemes of the invention is realized by the following measures: the high temperature resistant foaming agent comprises the raw materials of 60-70% of petroleum sodium sulfonate, 15-20% of chelating agent and 15-20% of synergist in parts by mass.
The following is a further optimization or/and improvement of one of the above-mentioned technical solutions of the invention:
the chelating agent is sodium polyphosphate.
The synergist is sodium dodecyl sulfate.
The sodium polyphosphate is of industrial grade; or/and sodium lauryl sulfate is technical grade.
The high-temperature resistant foaming agent is prepared by the following steps: firstly, uniformly mixing required amount of sodium petroleum sulfonate and a chelating agent for 1 to 1.5 hours to prepare a chelating material; secondly, adding the required amount of synergist into the chelate material, and continuously and uniformly stirring for 1 to 1.5 hours after the synergist is added to obtain a synergistic material; and thirdly, cooling the synergistic material to normal temperature to obtain the high-temperature-resistant foaming agent.
The petroleum sodium sulfonate is prepared according to the following steps: firstly, preparing caustic soda and water into a caustic soda solution according to the mass ratio of 1:2, and stirring the caustic soda solution to dissolve the caustic soda solution uniformly; step two, stirring and heating petroleum acid to 90-95 ℃, then slowly adding caustic soda solution, and reacting to obtain a neutralization reaction solution; and step three, keeping the temperature of the neutralization reaction solution at 90 ℃, and uniformly stirring the neutralization reaction solution for 2 to 2.5 hours to obtain the petroleum sodium sulfonate.
The caustic soda is industrial caustic soda; or/and the caustic soda solution is added in the second step according to the pH value of the neutralization reaction solution of 9 to 11.
The second technical scheme of the invention is realized by the following measures: the preparation method of the high-temperature-resistant foaming agent comprises the following steps: firstly, uniformly mixing required amount of sodium petroleum sulfonate and a chelating agent for 1 to 1.5 hours to prepare a chelating material; secondly, adding the required amount of synergist into the chelate material, and continuously and uniformly stirring for 1 to 1.5 hours after the synergist is added to obtain a synergistic material; and thirdly, cooling the synergistic material to normal temperature to obtain the high-temperature-resistant foaming agent.
The following is further optimization or/and improvement of the second technical scheme of the invention:
firstly, preparing caustic soda and water into a caustic soda solution according to the mass ratio of 1:2, and stirring the caustic soda solution to dissolve the caustic soda solution uniformly; step two, stirring and heating petroleum acid to 90-95 ℃, then slowly adding caustic soda solution, and reacting to obtain a neutralization reaction solution; and step three, keeping the temperature of the neutralization reaction solution at 90 ℃, and uniformly stirring the neutralization reaction solution for 2 to 2.5 hours to obtain the petroleum sodium sulfonate.
The third technical scheme of the invention is realized by the following measures: an application of a high-temperature resistant foaming agent as a high-temperature steam foam flooding foaming agent or a foam drilling fluid foaming agent in petroleum exploration operation.
The high-temperature-resistant foaming agent disclosed by the invention is mainly characterized by being capable of resisting the high temperature of 300 ℃ and effectively solving the problem that the foaming capacity of the conventional commercial foaming agent is lost at the high temperature (about 200 ℃). The foaming agent has the advantages of wide raw material source, simple and convenient preparation method, no generation of by-products and no environmental pollution.
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 high-temperature-resistant foaming agent comprises the raw materials of 60-70% of petroleum sodium sulfonate, 15-20% of chelating agent and 15-20% of synergist in parts by mass.
Example 2: the high-temperature-resistant foaming agent comprises the raw materials of petroleum sodium sulfonate 60% or 70%, chelating agent 15% or 20%, and synergist 15% or 20%.
Example 3: in the optimization of the embodiment, the chelating agent is sodium polyphosphate, and the synergist is sodium dodecyl sulfate.
Example 4: : as an optimization of the above example 3, sodium dodecyl sulfate and sodium polyphosphate are both technical grade, and sodium polyphosphate can form a chelate with a surfactant and crude oil in a saline solution.
Example 5: the high-temperature resistant foaming agent is prepared by the following steps: firstly, uniformly mixing required amount of sodium petroleum sulfonate and a chelating agent for 1 to 1.5 hours to prepare a chelating material; secondly, adding the required amount of synergist into the chelate material, and continuously and uniformly stirring for 1 to 1.5 hours after the synergist is added to obtain a synergistic material; and thirdly, cooling the synergistic material to normal temperature to obtain the high-temperature-resistant foaming agent.
Example 6: the high-temperature resistant foaming agent is prepared by the following steps: firstly, uniformly mixing required amount of petroleum sodium sulfonate and a chelating agent for 1 hour or 1.5 hours to prepare a chelating material; secondly, adding the required amount of the synergist into the chelate material, and continuously and uniformly stirring for 1 hour or 1.5 hours after the synergist is added to obtain a synergistic material; and thirdly, cooling the synergistic material to normal temperature to obtain the high-temperature-resistant foaming agent.
Example 7: as an optimization of the above example, sodium petroleum sulfonate was prepared according to the following steps: preparing caustic soda and water into a caustic soda solution according to the mass ratio of 1:2, and stirring the caustic soda solution to dissolve the caustic soda solution uniformly; step two, stirring and heating petroleum acid to 90-95 ℃, then slowly adding caustic soda solution, and reacting to obtain a neutralization reaction solution; and step three, keeping the temperature of the neutralization reaction solution at 90 ℃, and uniformly stirring the neutralization reaction solution for 2 to 2.5 hours to obtain the petroleum sodium sulfonate.
Example 8: as an optimization of the above example, sodium petroleum sulfonate was prepared according to the following steps: preparing caustic soda and water into a caustic soda solution according to the mass ratio of 1:2, and stirring the caustic soda solution to dissolve the caustic soda solution uniformly; secondly, stirring and heating petroleum acid to 90 ℃ or 95 ℃, and then slowly adding caustic soda solution to react to obtain a neutralization reaction solution; and step three, keeping the temperature of the neutralization reaction solution at 90 ℃, and uniformly stirring the neutralization reaction solution for 2 hours or 2.5 hours to obtain the petroleum sodium sulfonate.
Petroleum sulfonic acidSodium is obtained by neutralizing petroleum acid and caustic soda, and is component C6To C18Mixtures of various surfactants, including commercially available sodium petroleum sulfonate preparations.
Example 9: as optimization of the above embodiment, the caustic soda is industrial caustic soda; or/and the caustic soda solution is added in the second step according to the pH value of the neutralization reaction solution of 9 to 11.
Example 10: an application of a high-temperature resistant foaming agent, a high-temperature steam foam flooding foaming agent or a foam drilling fluid foaming agent in petroleum exploration operation.
Example 11: the high-temperature resistant foaming agent is prepared by the following steps: firstly, uniformly mixing required amount of sodium petroleum sulfonate and a chelating agent for 1 hour to prepare a chelating material; secondly, adding the required amount of the synergist into the chelate material, and continuously and uniformly stirring for 1 hour after the synergist is added to obtain a synergistic material; and thirdly, cooling the synergistic material to normal temperature to obtain the high-temperature-resistant foaming agent (sample 1). The weight parts of the components are as follows: 70% of petroleum sodium sulfonate prepared from petroleum acid, 15% of chelating agent and 15% of synergist.
Example 12: the weight parts of the components are as follows: petroleum acid-derived petroleum sodium sulfonate 60%, chelating agent 20%, and synergist 20%, and the high temperature resistant foaming agent (sample 2) was prepared according to the preparation method of example 11 above.
Example 13: the weight parts of the components are as follows: 65% of petroleum sodium sulfonate (commercially available), 18% of chelating agent and 17% of synergist, and the high temperature resistant foaming agent (sample 3) was prepared according to the preparation method of example 11.
Example 14: the weight parts of the components are as follows: 68% of petroleum sodium sulfonate (commercially available), 16% of chelating agent and 16% of synergist, and the high-temperature resistant foaming agent (sample 4) was prepared according to the preparation method of example 11.
The foaming ability and stability of the high temperature resistant foaming agents obtained in examples 11 to 14, samples 1, 2, 3 and 4 were evaluated, and a conventional commercial foaming agent was used as a control.
Taking 4 high-temperature aging tanks, numbering 1, 2, 3 and 4 in sequence, adding 100ml of 4% prehydrated bentonite slurry, 1g of NaCl and 4ml of crude oil into each aging tank, and then respectively adding 5g of foaming agent sample 1, foaming agent sample 2, foaming agent sample 3 and foaming agent sample 4; sealing the aging tank, aging the sample at 300 ℃ for 12h, cooling to room temperature, respectively transferring the samples in 4 aging tanks to 4 high-stirring cups with the numbers of 1, 2, 3 and 4, stirring at high speed for 1min, transferring to a 500ml measuring cylinder, and measuring the foam volume to obtain the foaming amount; and (3) standing the measuring cylinder, and measuring the time required by 50ml of liquid separated out by the foam, namely the half-life period, wherein the foaming capacity is more than or equal to 200ml, and the half-life period is more than or equal to 5min, namely the foaming capacity and the stability of the foaming agent sample meet the requirements. Table 1 shows experimental data for foaming capacity and stability for sample 1, sample 2, sample 3, sample 4 and conventional commercial blowing agents.
The results of the experimental data in Table 1 show that the foaming capacity and the stability of 4 foaming agent samples meet the requirements, namely the foaming amount is more than or equal to 200ml, and the half-life period is more than or equal to 5 min.
Thus, from the data in table 1 it can be seen that: the high-temperature-resistant foaming agent is mainly characterized by being capable of resisting the high temperature of 300 ℃ and effectively solving the problem that the foaming capacity of the conventional commercial foaming agent is lost at the high temperature (about 200 ℃). The foaming agent has the advantages of wide raw material source, simple and convenient preparation method, no generation of by-products and no environmental pollution.
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 (6)
1. The high-temperature-resistant foaming agent is characterized in that the raw material consists of 60 to 70 mass percent of petroleum sodium sulfonate, 15 to 20 mass percent of chelating agent and 15 to 20 mass percent of synergist; wherein the content of the first and second substances,
the chelating agent is industrial-grade sodium polyphosphate, the synergist is industrial-grade sodium dodecyl sulfate,
the high-temperature resistant foaming agent is prepared by the following steps: firstly, uniformly mixing required amount of sodium petroleum sulfonate and a chelating agent for 1 to 1.5 hours to prepare a chelating material; secondly, adding the required amount of synergist into the chelate material, and continuously and uniformly stirring for 1 to 1.5 hours after the synergist is added to obtain a synergistic material; and thirdly, cooling the synergistic material to normal temperature to obtain the high-temperature-resistant foaming agent.
2. The high temperature resistant foaming agent according to claim 1, wherein the sodium petroleum sulfonate is prepared by the following steps: firstly, preparing caustic soda and water into a caustic soda solution according to the mass ratio of 1:2, and stirring the caustic soda solution to dissolve the caustic soda solution uniformly; step two, stirring and heating petroleum acid to 90-95 ℃, then slowly adding caustic soda solution, and reacting to obtain a neutralization reaction solution; and step three, keeping the temperature of the neutralization reaction solution at 90 ℃, and uniformly stirring the neutralization reaction solution for 2 to 2.5 hours to obtain the petroleum sodium sulfonate.
3. The high temperature resistant blowing agent of claim 1 or 2, characterized in that the caustic soda is industrial caustic soda; or/and the caustic soda solution is added in the second step according to the pH value of the neutralization reaction solution of 9 to 11.
4. The preparation method of the high-temperature-resistant foaming agent is characterized by comprising the following steps of: firstly, uniformly mixing required amount of sodium petroleum sulfonate and a chelating agent for 1 to 1.5 hours to prepare a chelating material; secondly, adding the required amount of synergist into the chelate material, and continuously and uniformly stirring for 1 to 1.5 hours after the synergist is added to obtain a synergistic material; thirdly, cooling the synergistic material to normal temperature to obtain the high-temperature-resistant foaming agent; the raw materials comprise, by mass, 60-70% of petroleum sodium sulfonate, 15-20% of a chelating agent and 15-20% of a synergist, the chelating agent is industrial sodium polyphosphate, and the synergist is industrial sodium dodecyl sulfate.
5. The method for preparing the high temperature-resistant foaming agent according to claim 4, wherein the sodium oleyl sulfonate is prepared by the following steps: firstly, preparing caustic soda and water into a caustic soda solution according to the mass ratio of 1:2, and stirring the caustic soda solution to dissolve the caustic soda solution uniformly; step two, stirring and heating petroleum acid to 90-95 ℃, then slowly adding caustic soda solution, and reacting to obtain a neutralization reaction solution; and step three, keeping the temperature of the neutralization reaction solution at 90 ℃, and uniformly stirring the neutralization reaction solution for 2 to 2.5 hours to obtain the petroleum sodium sulfonate.
6. Use of a high temperature resistant foaming agent according to any one of claims 1 to 3 as a high temperature steam foam flooding foaming agent or a foam drilling fluid foaming agent in oil exploration operations.
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| CN201711107120 | 2017-11-10 | ||
| CN2017111071201 | 2017-11-10 |
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| CN108084981A CN108084981A (en) | 2018-05-29 |
| CN108084981B true CN108084981B (en) | 2020-08-21 |
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| CN110699057A (en) * | 2019-09-27 | 2020-01-17 | 中国石油化工股份有限公司 | Temperature-resistant high-strength foam system with synergistic lamellar nano-particles and preparation method thereof |
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|---|---|---|---|---|
| CN1238369A (en) * | 1999-06-22 | 1999-12-15 | 胡振明 | Hot-producing high-temp foaming agent |
| CN104213870A (en) * | 2014-08-19 | 2014-12-17 | 中国石油天然气股份有限公司 | Exploitation method for artificial foam oil in water-driven heavy oil reservoir |
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|---|---|---|---|---|
| CN1238369A (en) * | 1999-06-22 | 1999-12-15 | 胡振明 | Hot-producing high-temp foaming agent |
| CN104213870A (en) * | 2014-08-19 | 2014-12-17 | 中国石油天然气股份有限公司 | Exploitation method for artificial foam oil in water-driven heavy oil reservoir |
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Effective date of registration: 20220104 Address after: 834000 No. 2500-1, Ping An Avenue, baijianwei District, Karamay City, Xinjiang Uygur Autonomous Region Patentee after: Xinjiang beiken Chemical Co.,Ltd. Patentee after: Xinjiang beiken Energy Engineering Co., Ltd Address before: 834009 No.91, menmen Road, Baijiantan District, Karamay City, Xinjiang Uygur Autonomous Region Patentee before: Xinjiang Beiken Energy Engineering Stock Co.,Ltd. |