CN113292975B - Novel paraffin removal and dissolution ball for oil field and preparation method thereof - Google Patents
Novel paraffin removal and dissolution ball for oil field and preparation method thereof Download PDFInfo
- Publication number
- CN113292975B CN113292975B CN202110713776.8A CN202110713776A CN113292975B CN 113292975 B CN113292975 B CN 113292975B CN 202110713776 A CN202110713776 A CN 202110713776A CN 113292975 B CN113292975 B CN 113292975B
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- ball
- paraffin removal
- sphere
- wax
- oil field
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- 239000012188 paraffin wax Substances 0.000 title claims abstract description 73
- 238000004090 dissolution Methods 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000001993 wax Substances 0.000 claims abstract description 24
- 239000003208 petroleum Substances 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 5
- 239000004800 polyvinyl chloride Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000004512 die casting Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 25
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
The invention provides a novel paraffin removal and dissolution wax ball for an oil field and a preparation method thereof, and relates to the technical field of petroleum exploitation. Comprising the following steps: a sphere which is hollow; the outer surface of the sphere is a smooth surface, and the inner surface of the sphere is provided with protrusions arranged in an array; the ball is filled with a wax remover. The invention provides a novel paraffin removal and dissolution ball for an oil field and a preparation method thereof, which solve the problem that the conventional rubber paraffin removal ball is easy to block a pipeline. When the pressure reaches the rated pressure, the ball body is broken into a sheet shape, and the ball clamping phenomenon can not be caused.
Description
Technical Field
The invention relates to the technical field of petroleum exploitation, in particular to a novel paraffin removal and dissolution wax ball for an oil field and a preparation method thereof.
Background
In the process of pipeline transportation of crude oil from a wellhead to a pressurizing station in the production link of petroleum exploitation, paraffin (C) 16 H 34 ～C 64 H 13 ) And the blockage is easy to form in the condensation of the inner wall of the pipeline, especially in the low-temperature environment. In order to avoid blockage caused by paraffin condensation, the paraffin removal ball is pushed to clean the paraffin condensed on the pipe wall by the pipe conveying pressure in the current production process, so that the smoothness of the pipeline is ensured.
The paraffin removal balls used at present are all solid balls made of rubber materials, and have certain strength and elasticity (the tensile strength is not less than 10Mpa, the elongation at break is not less than 240%, the permanent deformation at break is not more than 15%, and the hardness is 75+/-5 shore A). However, in actual use, when the wall of the paraffin condensation pipe reaches a certain thickness, the paraffin removal ball pushes the paraffin to be more and more, and finally the pipe conveying pressure cannot push the paraffin removal ball to advance, so that the pipeline is blocked. At this time, a heating car is usually used for carrying out heating power purging operation on the oil pipeline, the dissolution of paraffin is promoted by heating power, and then the blocked paraffin cleaning ball and paraffin are thoroughly removed by high pressure. When serious blockage occurs and the hot washing vehicle can not dredge the pipeline, the pipeline cleaning operation is generally carried out by adopting a mode of searching for a blockage point and excavating and cutting off the pipeline. The working difficulty and the production cost are huge during the period.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a novel paraffin removal paraffin dissolution ball for an oil field and a preparation method thereof. The ball body can bear the pressure of 0.8-1.5MPa, when the pressure exceeds the design pressure of the product, the ball body breaks, the internal wax removing agent flows out, and the paraffin in the blocking area is dissolved, so that the functions of removing and dissolving the paraffin are realized. The ball body has certain structural characteristics, and can be broken into smaller sheets under the action of pressure after being broken, so that the balls can not be deposited in the pipeline along with the flow removal of crude oil in the pipeline to form secondary blockage.
The first object of the invention is to provide a novel paraffin removal and dissolution ball for oil fields, which comprises the following components:
a sphere which is hollow;
the outer surface of the sphere is a smooth surface, and the inner surface of the sphere is provided with protrusions arranged in an array;
the ball is filled with a wax remover.
Preferably, the outer diameter of the sphere is 32 mm-48 mm.
Preferably, the thickness of the sphere wall is 1.5-2.5 mm.
Preferably, the protrusions are regular triangular pyramids or regular quadrangular pyramids, and tips of the regular triangular pyramids or the regular quadrangular pyramids are arranged far away from the inner side of the sphere.
More preferably, the bottom edges between two adjacent protrusions are the same bottom edge.
Preferably, the sphere is made of a mixture of petroleum resin and polyvinyl chloride, and the mass ratio of the petroleum resin to the polyvinyl chloride is 3:7.
Preferably, the pressure born by the wax dissolving ball is 0.8-1.5 MPa.
The second object of the invention is to provide a novel preparation method of paraffin removal and wax dissolution balls for oil fields, which is characterized by comprising the following steps:
adopting a die casting mode to produce two semicircular spheres, and then closing the two semicircular spheres into a complete sphere; in the process of die assembly, a paraffin removal agent filling port and an exhaust port are reserved at symmetrical positions of the ball body;
and filling the paraffin removal agent in the ball body after the die assembly through filling equipment, and sealing to obtain the novel paraffin removal paraffin-dissolving ball for the oil field.
Preferably, the sealing is made of the same material as the ball body, and the sealing temperature is 150-160 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a novel paraffin removal and dissolution ball for an oil field and a preparation method thereof, which solve the problem that the conventional rubber paraffin removal ball is easy to block a pipeline. When the pressure reaches the rated pressure, the ball body is broken into a sheet shape, and the ball clamping phenomenon can not be caused. The paraffin remover in the sphere can act on the paraffin to improve the solubility, reduce the viscosity of the paraffin, provide fluidity and avoid wall coagulation. When the pipeline congeals wax seriously, the pipeline delivery pressure is not high, the product is not broken, and can be recycled.
Drawings
FIG. 1 is a schematic diagram of the structure of a novel paraffin removal and dissolution wax ball for an oil field.
Fig. 2 is a schematic diagram of the internal structure of the novel paraffin removal and dissolution wax ball for oil fields.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the present invention will be further described with reference to specific examples, but the examples are not intended to limit the present invention.
The novel paraffin removal and dissolution ball for oil field adopted in the following embodiment is shown in figures 1-2, and comprises;
a sphere 1 which is hollow;
the outer surface of the sphere 1 is a smooth surface, and the inner surface 2 of the sphere is provided with protrusions arranged in an array;
the ball 1 is filled with a wax remover;
the outer diameter of the sphere is 32 mm-48 mm.
The thickness of the sphere wall 3 is 1.5-2.5 mm.
The bulges are regular triangular pyramids or regular quadrangular pyramids; the tip of the regular triangular pyramid or the regular quadrangular pyramid is arranged far away from the inner side of the sphere; the bottom edges between two adjacent bulges are the same bottom edge.
The novel oilfield paraffin removal wax-dissolving ball provided in the following examples is prepared from 30wt% of petroleum resin and 70wt% of polyvinyl chloride;
the paraffin removal agents filled in the novel paraffin removal and dissolution ball for the oil field provided in the following examples are all oil-based paraffin removal agents CX1 for the oil field.
The novel paraffin removal and dissolution wax ball for the oil field is prepared according to the following steps:
producing two semicircular spheres by using a die casting mode, and then closing the two semicircular spheres into a complete sphere; in the process of die assembly, a paraffin removal agent filling port and an exhaust port are reserved at symmetrical positions of the ball body;
and filling the paraffin removal agent into the ball body after the die assembly through filling equipment, and sealing to obtain the novel paraffin removal and paraffin removal ball for the oil field. Wherein, the material used for sealing is the same as that of the sphere, and the sealing temperature is 156 ℃.
Example 1
A novel paraffin removal and dissolution ball for oil field, which is shown in figures 1-2, comprises;
a sphere 1 which is hollow, wherein the outer diameter of the sphere is 32mm, and the wall thickness is 1.5mm;
the outer surface of the sphere 1 is a smooth surface, and the inner surface 2 of the sphere is provided with protrusions arranged in an array;
the bulges are regular triangular pyramids, wherein the bottom side of the regular triangular pyramids is 4mm long and the height is 1mm,
the bottom edges of two adjacent regular triangular pyramids are the same bottom edge;
the ball 1 is filled with wax remover.
Example 2
A novel paraffin removal and dissolution ball for oil field, which is shown in figures 1-2, comprises;
a sphere 1 which is hollow, wherein the outer diameter of the sphere is 36mm, and the wall thickness is 1.7mm;
the outer surface of the sphere 1 is a smooth surface, and the inner surface 2 of the sphere is provided with protrusions arranged in an array;
the bulges are regular triangular pyramids, wherein the bottom side of the regular triangular pyramids is 4mm long and the height is 1.2mm,
the bottom edges of two adjacent regular triangular pyramids are the same bottom edge;
the ball 1 is filled with wax remover.
Example 3
A novel paraffin removal and dissolution ball for oil field, which is shown in figures 1-2, comprises;
a sphere 1 which is hollow, wherein the outer diameter of the sphere is 40mm, and the wall thickness is 1.9mm;
the outer surface of the sphere 1 is a smooth surface, and the inner surface 2 of the sphere is provided with protrusions arranged in an array;
the bulges are regular rectangular pyramids, wherein the bottom side of each regular rectangular pyramid is 4mm long and 1.4mm high,
the bottom edges of two adjacent regular rectangular pyramids are the same bottom edge;
the ball 1 is filled with wax remover.
Example 4
A novel paraffin removal and dissolution ball for oil field, which is shown in figures 1-2, comprises;
a sphere 1 which is hollow, wherein the outer diameter of the sphere is 45mm, and the wall thickness is 2.2mm;
the outer surface of the sphere 1 is a smooth surface, and the inner surface 2 of the sphere is provided with protrusions arranged in an array;
the bulges are regular rectangular pyramids, wherein the bottom side of each regular rectangular pyramid is 5mm long and 1.5mm high,
the bottom edges of two adjacent regular rectangular pyramids are the same bottom edge;
the ball 1 is filled with wax remover.
Example 5
A novel paraffin removal and dissolution ball for oil field, which is shown in figures 1-2, comprises;
a sphere 1 which is hollow, wherein the outer diameter of the sphere is 48mm, and the wall thickness is 2.5mm;
the outer surface of the sphere 1 is a smooth surface, and the inner surface 2 of the sphere is provided with protrusions arranged in an array;
the bulges are regular triangular pyramids, wherein the bottom side of the regular triangular pyramids is 6mm long and 1.5mm high,
the bottom edges of two adjacent regular triangular pyramids are the same bottom edge;
the ball 1 is filled with wax remover.
In order to illustrate the pressure-bearing performance of the novel oilfield paraffin removal paraffin wax ball provided by the invention, the novel oilfield paraffin removal paraffin wax ball provided by examples 1 to 5 is subjected to pressure-bearing test, and the results are shown in table 1.
Table 1 shows the pressure-bearing properties of the novel paraffin wax-removing and dissolving balls for oil fields provided in examples 1 to 5
| Examples | Maximum bearing pressure/MPa |
| 1 | 0.8 |
| 2 | 1.0 |
| 3 | 1.1 |
| 4 | 1.2 |
| 5 | 1.2 |
The table shows that the novel paraffin removal and dissolution ball for the oil field can bear the pressure of 0.8-1.2MPa, when the pressure exceeds the design pressure of a product, the ball breaks, the internal paraffin removal agent flows out, paraffin in a blocking area is dissolved, and paraffin removal and dissolution functions are realized. The ball body has certain structural characteristics, and can be broken into smaller sheets under the action of pressure after being broken, so that the balls can not be deposited in the pipeline along with the flow removal of crude oil in the pipeline to form secondary blockage.
The invention provides a novel paraffin removal wax-dissolving ball for an oil field and a preparation method thereof.
The invention provides a novel paraffin removal and dissolution ball for an oil field and a preparation method thereof, which solve the problem that the conventional rubber paraffin removal ball is easy to block a pipeline. When the pressure reaches the rated pressure, the ball body is broken into a sheet shape, and the ball clamping phenomenon can not be caused. The paraffin remover in the sphere can act on the paraffin to improve the solubility, reduce the viscosity of the paraffin, provide fluidity and avoid wall coagulation. When the pipeline congeals wax seriously, the pipeline delivery pressure is not high, the product is not broken, and can be recycled.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (5)
1. An oilfield paraffin removal wax dissolving ball, comprising:
a sphere which is hollow; the outer surface of the sphere is a smooth surface, and the inner surface of the sphere is provided with protrusions arranged in an array; the ball is filled with a wax remover;
the outer diameter of the sphere is 32 mm-48 mm;
the thickness of the sphere wall is 1.5-2.5 mm;
the bulges are regular triangular pyramids or regular quadrangular pyramids, and the tips of the regular triangular pyramids or the regular quadrangular pyramids are arranged far away from the inner side of the sphere;
the ball is made of a mixture of petroleum resin and polyvinyl chloride, and the mass ratio of the petroleum resin to the polyvinyl chloride is 3:7.
2. The oilfield paraffin removal wax ball of claim 1, wherein the bottom edges between two adjacent protrusions are the same bottom edge.
3. The oilfield paraffin removal wax dissolving ball according to claim 1, wherein the wax dissolving ball is subjected to a pressure of 0.8-1.5 MPa.
4. A method for preparing the paraffin removal and dissolution ball for oil field according to any one of claims 1 to 3, comprising the following steps:
adopting a die casting mode to produce two semicircular spheres, and then closing the two semicircular spheres into a complete sphere; in the process of die assembly, a paraffin removal agent filling port and an exhaust port are reserved at symmetrical positions of the ball body; and filling the paraffin removal agent into the ball body after the die assembly through filling equipment, and sealing to obtain the paraffin removal and paraffin removal ball for the oil field.
5. The method for preparing paraffin removal and wax dissolution ball for oil field according to claim 4, wherein the sealing is made of the same material as the ball body, and the sealing temperature is 150-160 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110713776.8A CN113292975B (en) | 2021-06-25 | 2021-06-25 | Novel paraffin removal and dissolution ball for oil field and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110713776.8A CN113292975B (en) | 2021-06-25 | 2021-06-25 | Novel paraffin removal and dissolution ball for oil field and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113292975A CN113292975A (en) | 2021-08-24 |
| CN113292975B true CN113292975B (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110713776.8A Active CN113292975B (en) | 2021-06-25 | 2021-06-25 | Novel paraffin removal and dissolution ball for oil field and preparation method thereof |
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| Country | Link |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108997992A (en) * | 2018-09-05 | 2018-12-14 | 石家庄长宏能源科技有限公司 | A kind of oilfield environmentally friendly Wax removing agent and preparation method thereof |
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| CN111058799A (en) * | 2019-12-09 | 2020-04-24 | 陕西聚想橡塑制品有限公司 | Carbon fiber casting type polyurethane hollow paraffin removal ball |
| CN214937213U (en) * | 2021-06-25 | 2021-11-30 | 陕西庆荣石化科技有限公司 | Novel oil field paraffin removal and dissolution ball |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7867613B2 (en) * | 2005-02-04 | 2011-01-11 | Oxane Materials, Inc. | Composition and method for making a proppant |
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2021
- 2021-06-25 CN CN202110713776.8A patent/CN113292975B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108997992A (en) * | 2018-09-05 | 2018-12-14 | 石家庄长宏能源科技有限公司 | A kind of oilfield environmentally friendly Wax removing agent and preparation method thereof |
| CN109236236A (en) * | 2018-10-23 | 2019-01-18 | 西安奥德石油工程技术有限责任公司 | A kind of petroleum pipeline wax removal part |
| CN109868127A (en) * | 2019-03-13 | 2019-06-11 | 西安石油大学 | A kind of inline type paraffin removing with chemical method ball and its preparation method and application |
| CN109926407A (en) * | 2019-03-13 | 2019-06-25 | 西安石油大学 | A kind of non-recycled type paraffin removing with chemical method ball and its preparation method and application |
| CN110257045A (en) * | 2019-05-09 | 2019-09-20 | 四川维泰科创石油设备制造有限公司 | A kind of proppant, fracturing fluid and the fracturing process of oil gas rock stratum |
| CN110305643A (en) * | 2019-06-21 | 2019-10-08 | 西安石油大油气科技有限公司 | A kind of environment-friendly type oil field Wax removing agent and preparation method thereof |
| CN110586588A (en) * | 2019-09-29 | 2019-12-20 | 银川塞昊橡胶有限公司 | Wax removal ball |
| CN111058799A (en) * | 2019-12-09 | 2020-04-24 | 陕西聚想橡塑制品有限公司 | Carbon fiber casting type polyurethane hollow paraffin removal ball |
| CN214937213U (en) * | 2021-06-25 | 2021-11-30 | 陕西庆荣石化科技有限公司 | Novel oil field paraffin removal and dissolution ball |
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| CN113292975A (en) | 2021-08-24 |
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