CN110982504A - Solvent for removing underground heavy hydrocarbon deposition and preparation method thereof - Google Patents
Solvent for removing underground heavy hydrocarbon deposition and preparation method thereof Download PDFInfo
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- CN110982504A CN110982504A CN202010013080.XA CN202010013080A CN110982504A CN 110982504 A CN110982504 A CN 110982504A CN 202010013080 A CN202010013080 A CN 202010013080A CN 110982504 A CN110982504 A CN 110982504A
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- solvent
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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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
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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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
The invention discloses a solvent for removing underground heavy hydrocarbon deposition and a preparation method thereof, wherein the solvent comprises the following components in percentage by weight: 4-8 parts of anionic surfactant, 5-10 parts of nonionic surfactant, 40-50 parts of aromatic hydrocarbon and the balance of water; the preparation method of the solvent comprises the steps of adding water, an anionic surfactant, a nonionic surfactant and aromatic hydrocarbon in sequence according to the proportion of the components of the solvent for removing the heavy hydrocarbon deposition in the well under the room temperature condition, mixing uniformly and compounding. The solvent for removing the underground heavy hydrocarbon deposition of the heavy hydrocarbon well and the preparation method thereof are used for removing the underground heavy hydrocarbon deposition of the heavy hydrocarbon well, have strong dissolving capacity on the heavy hydrocarbon deposition, have viscosity reduction capacity, can remove calcium and magnesium scale and clay particle blockage in formation pores, have low corrosivity on equipment and a pipe column, and have good compatibility, stability and safety.
Description
Technical Field
The invention belongs to the technical field of petroleum exploitation, and particularly relates to a solvent for removing underground heavy hydrocarbon deposition applied to a heavy oil well and a preparation method thereof.
Background
In the viscous crude oil exploitation process, heavy hydrocarbon component is in near well casing area in the crude oil, like perforation big gun hole area, department such as sand control screen pipe, temperature pressure shock, the area easily appears, the deposit, lead to near well casing area oil flow passageway to block up, serious influence viscous crude well productivity, this type of heavy hydrocarbon deposit uses asphaltene as the main, can adsorb silt, clay particle and follow-up crude oil in the exploitation process heavy hydrocarbon component growth, finally form strong structure heavy hydrocarbon deposit in extreme environment in the pit.
Aiming at the special structure of the heavy hydrocarbon deposit, the inventor of the invention intensively studies the subject how to design a solvent which is not influenced by density difference and can efficiently dissolve the heavy hydrocarbon deposit and a preparation method thereof.
Disclosure of Invention
The invention aims to provide a solvent for removing underground heavy hydrocarbon deposition and a preparation method thereof, the solvent has strong dissolving capacity on heavy hydrocarbon deposition, is not influenced by oil-water density difference, can remove asphaltene heavy hydrocarbon deposition deposited in a near-wellbore area, has low corrosion on equipment and a pipe column, and has good compatibility, stability and safety.
In order to achieve the aim, the invention provides a solvent for removing heavy hydrocarbon deposition in a well, which comprises the following components in percentage by weight: 4-8 parts of anionic surfactant, 5-10 parts of nonionic surfactant, 40-50 parts of aromatic hydrocarbon and the balance of water.
Preferably, the components and weight percentages are as follows: 4-6 parts of anionic surfactant, 7-9 parts of nonionic surfactant, 43-47 parts of aromatic hydrocarbon and the balance of water.
Preferably, the anionic surfactant is a phenol ether phosphate.
Preferably, the nonionic surfactant is fatty alcohol-polyoxyethylene ether.
Preferably, the aromatic hydrocarbon adopts 150# solvent oil.
A preparation method of a solvent for removing underground heavy hydrocarbon deposition comprises the steps of adding water, an anionic surfactant, a nonionic surfactant and aromatic hydrocarbon in sequence according to the proportion of each component of the solvent for removing the underground heavy hydrocarbon deposition at room temperature, uniformly mixing, and then compounding.
After the scheme is adopted, the solvent for removing the underground heavy hydrocarbon deposition in the heavy oil well and the preparation method thereof have strong dissolving capacity on heavy hydrocarbon deposits, are not influenced by oil-water density difference, can remove asphaltene heavy hydrocarbon deposits deposited in a near-wellbore area, can remove calcium-magnesium scale and clay particle blockage in formation pores, have low corrosion on equipment and a pipe column, and have good compatibility, stability and safety.
Detailed Description
The first embodiment is as follows:
the invention relates to a solvent for removing underground heavy hydrocarbon deposition, which comprises the following components in percentage by weight:
the anionic surfactant is phenol ether phosphate; the nonionic surfactant is fatty alcohol-polyoxyethylene ether, and the aromatic hydrocarbon is 150# solvent oil.
The preparation method comprises the following steps:
under the condition of room temperature, firstly, adding water, anionic surfactant, nonionic surfactant and aromatic hydrocarbon, uniformly mixing and compounding to obtain the invented product.
Example two:
the invention relates to a solvent for removing underground heavy hydrocarbon deposition, which comprises the following components in percentage by weight:
the anionic surfactant is phenol ether phosphate; the nonionic surfactant is fatty alcohol-polyoxyethylene ether, and the aromatic hydrocarbon is 150# solvent oil.
The preparation method comprises the following steps:
under the condition of room temperature, firstly, adding water, anionic surfactant, nonionic surfactant and aromatic hydrocarbon, uniformly mixing and compounding to obtain the invented product.
Example three:
the invention relates to a high-efficiency solvent for removing underground heavy hydrocarbon deposition in a heavy oil well, which comprises the following components in percentage by weight:
the anionic surfactant is phenol ether phosphate; the nonionic surfactant is fatty alcohol-polyoxyethylene ether, and the aromatic hydrocarbon is 150# solvent oil.
The preparation method comprises the following steps:
under the condition of room temperature, firstly, adding water, anionic surfactant, nonionic surfactant and aromatic hydrocarbon, uniformly mixing and compounding to obtain the invented product.
Example four:
the invention relates to a high-efficiency solvent for removing underground heavy hydrocarbon deposition in a heavy oil well, which comprises the following components in percentage by weight:
the anionic surfactant is phenol ether phosphate; the nonionic surfactant is fatty alcohol-polyoxyethylene ether, and the aromatic hydrocarbon is 150# solvent oil.
The preparation method comprises the following steps:
under the condition of room temperature, firstly, adding water, anionic surfactant, nonionic surfactant and aromatic hydrocarbon, uniformly mixing and compounding to obtain the invented product.
Results of performance testing for the above examples:
asphalt solubility
1. Asphalt solubility:
a) the steel sheet is weighed and recorded m1The accuracy is 0.001g, and the number is recorded;
b) soaking the steel sheet in preheated asphalt, dipping a certain amount of asphalt for later use, weighing m2To the nearest 0.001 g;
c) weighing 200g of the solvent, and putting the hanging piece dipped with the asphalt into the middle lower part;
d) standing the bottle in water bath at 60 deg.C for 4 hr, taking out the hanging tablet, and recording the mass m of the hanging tablet3To the nearest 0.001 g;
e) the cleaning capacity is calculated.
2. Cleaning capacity:
the cleaning capacity is expressed in x, and the calculation formula is as follows:
in the formula:
x-cleaning power,%;
m1-mass of steel sheet, mass g;
m2-mass of steel sheet plus bitumen, mass g;
m3mass of steel sheet plus bitumen after cleaning, mass g.
The corrosion rate test results are shown in table 1:
TABLE 1 Corrosion Rate test results
Second, wax dissolution rate
1. And (3) determining the wax dissolving rate:
the measurement is carried out according to the wax dissolving rate operation in the technical requirement of the wax removing and preventing agent for oil recovery Q/SH 0052-2007.
The specific operation is as follows:
a) softening paraffin, kneading into small balls, and weighing to 0.001 g;
b) the temperature of the constant-temperature water bath is controlled at 60 ℃, 1SmL of the solvent is added into a 50mL colorimetric tube, and the mixture is put into the water bath. And (3) after the solvent in the colorimetric tube is kept at a constant temperature, putting the wax ball into the colorimetric tube, and observing and recording the time t for the wax ball to be dissolved completely, wherein the time t is accurate to 1 min.
2. And (3) calculating:
the wax dissolution rate was calculated as follows.
In the formula:
gamma-wax dissolution rate, g/min;
m4-wax ball mass, g;
t-time taken for wax ball to dissolve, min.
The evaluation results are shown in Table 2.
TABLE 2 wax dissolution Rate test results
Third, viscosity reduction rate
1, viscosity reduction rate determination:
the viscosity reduction rate operation determination is carried out according to the technical requirement of Q/SH 0055-2007 thick oil viscosity reducer.
The method comprises the following specific steps:
a) keeping the temperature of the thick oil in a constant temperature water bath of (50 + -1) ° C for 1h, stirring to remove free water and bubbles, and rapidly measuring the viscosity μ at (50 + -1) ° C by using a rotational viscometer0；
b) Weighing 280g (accurate to 0.1g) of the oil sample prepared in the step (a) in a beaker, adding 120g of the solvent to prepare 3 percent of the solvent, placing the solvent in a constant-temperature water bath at the temperature of (50 +/-1) DEG C, keeping the temperature for 1h, placing a stirring paddle in the center of the beaker and 2-3mm away from the bottom of the beaker, adjusting the rotating speed to 250r/min, and stirring for 2min under the constant temperature condition;
c) the viscosity (. mu.) at (50. + -. 1). degree.C.was measured immediately with a rotational viscometer.
2. Computing
The results were calculated as follows.
In the formula:
f-viscosity reduction rate,%;
μ0-viscosity of the thick oil sample at 50 ℃, mpa.s;
mu-viscosity of the thick oil emulsion after adding the high-efficiency solvent, mPa.s.
TABLE 3 test results of viscosity reduction ratio
| 3% solvent | viscosity/mPa.s | Viscosity reduction ratio/%) |
| Initial viscosity | 16200 | |
| Example one | 171 | 99.11 |
| Example two | 156 | 99.19 |
| EXAMPLE III | 128 | 99.33 |
| Example four | 103 | 99.46 |
The solvent for removing underground heavy hydrocarbon deposition applied to the heavy oil well and the preparation method thereof have strong dissolving capacity on heavy hydrocarbon deposition, are not influenced by oil-water density difference, can remove asphaltene heavy hydrocarbon deposition deposited in a near-wellbore area, can remove calcium-magnesium scale and clay particle blockage in formation pores, have low corrosion on equipment and a pipe column, and have good compatibility, stability and safety.
The embodiments of the present invention have been described in detail, but the description is only a preferred example of the present invention, and is not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the design of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (6)
1. A solvent for removing heavy hydrocarbon deposits downhole, comprising: the components and weight percentage are as follows: 4-8 parts of anionic surfactant, 5-10 parts of nonionic surfactant, 40-50 parts of aromatic hydrocarbon and the balance of water.
2. The solvent for removing heavy hydrocarbon deposits in the well as recited in claim 1, wherein the components and weight percentages are as follows: 4-6 parts of anionic surfactant, 7-9 parts of nonionic surfactant, 43-47 parts of aromatic hydrocarbon and the balance of water.
3. The solvent for removing heavy hydrocarbon deposits downhole as recited in claim 1, wherein the anionic surfactant is a phenolic ether phosphate.
4. The solvent for removing heavy hydrocarbon deposits downhole as recited in claim 1, wherein said nonionic surfactant is fatty alcohol polyoxyethylene ether.
5. The solvent for removing heavy hydrocarbon deposits in the well, according to claim 1, characterized in that the aromatic hydrocarbon adopts 150# solvent oil.
6. A preparation method of a solvent for removing underground heavy hydrocarbon deposition is characterized in that the solvent is prepared by sequentially adding water, an anionic surfactant, a nonionic surfactant and aromatic hydrocarbon according to the proportion of each component of the solvent for removing underground heavy hydrocarbon deposition in claim 1 at room temperature, uniformly mixing and compounding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010013080.XA CN110982504A (en) | 2020-01-07 | 2020-01-07 | Solvent for removing underground heavy hydrocarbon deposition and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010013080.XA CN110982504A (en) | 2020-01-07 | 2020-01-07 | Solvent for removing underground heavy hydrocarbon deposition and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112694876A (en) * | 2020-12-25 | 2021-04-23 | 河北峻极化工科技有限公司 | Solvent for removing underground heavy hydrocarbon deposition and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1778862A (en) * | 2004-11-17 | 2006-05-31 | 中国石油化工股份有限公司 | Inspissated oil emulsion viscidity reducer |
| US20090008091A1 (en) * | 2007-07-03 | 2009-01-08 | Baker Hughes Incorporated | Single Phase Microemulsions and In Situ Microemulsions for Cleaning Formation Damage |
| CN102140909A (en) * | 2010-01-29 | 2011-08-03 | 中国石油化工股份有限公司 | Method for reducing viscosity of heavy oil by emulsification |
| CN102250606A (en) * | 2010-05-20 | 2011-11-23 | 中国石油化工股份有限公司 | Microemulsion for heavy oil thermal recovery and preparation method for microemulsion |
| CN105255468A (en) * | 2015-10-28 | 2016-01-20 | 中国石油化工股份有限公司 | Emulsion type paraffin remover and inhibitor and preparation method thereof |
| CN106520102A (en) * | 2015-09-11 | 2017-03-22 | 中国石油化工股份有限公司 | Composition for lowering viscosity of thick oil, thick oil viscosity reducer, preparation method, thick oil viscosity reduction method and thick oil reservoir production method |
| CN109971445A (en) * | 2019-04-28 | 2019-07-05 | 新疆新辰鼎盛石油工程有限公司 | Anti-scaling viscosity reduction type lotion Wax removing agent and preparation method thereof |
-
2020
- 2020-01-07 CN CN202010013080.XA patent/CN110982504A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1778862A (en) * | 2004-11-17 | 2006-05-31 | 中国石油化工股份有限公司 | Inspissated oil emulsion viscidity reducer |
| US20090008091A1 (en) * | 2007-07-03 | 2009-01-08 | Baker Hughes Incorporated | Single Phase Microemulsions and In Situ Microemulsions for Cleaning Formation Damage |
| CN102140909A (en) * | 2010-01-29 | 2011-08-03 | 中国石油化工股份有限公司 | Method for reducing viscosity of heavy oil by emulsification |
| CN102250606A (en) * | 2010-05-20 | 2011-11-23 | 中国石油化工股份有限公司 | Microemulsion for heavy oil thermal recovery and preparation method for microemulsion |
| CN106520102A (en) * | 2015-09-11 | 2017-03-22 | 中国石油化工股份有限公司 | Composition for lowering viscosity of thick oil, thick oil viscosity reducer, preparation method, thick oil viscosity reduction method and thick oil reservoir production method |
| CN105255468A (en) * | 2015-10-28 | 2016-01-20 | 中国石油化工股份有限公司 | Emulsion type paraffin remover and inhibitor and preparation method thereof |
| CN109971445A (en) * | 2019-04-28 | 2019-07-05 | 新疆新辰鼎盛石油工程有限公司 | Anti-scaling viscosity reduction type lotion Wax removing agent and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 录华主编: "《精细化工概论》", 31 July 2005, 化学工业出版社 * |
| 董轲等: "原油石蜡结晶与清除的研究进展", 《化工技术与开发》 * |
| 赵福麟: "《油田化学》", 30 September 2010, 中国石油大学出版社 * |
| 金谷主编: "《表面活性剂化学》", 31 August 2013, 中国科学技术大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112694876A (en) * | 2020-12-25 | 2021-04-23 | 河北峻极化工科技有限公司 | Solvent for removing underground heavy hydrocarbon deposition and preparation method thereof |
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Application publication date: 20200410 |