CN212249961U - Electric heating paraffin removal insulating wellhead for oil production well - Google Patents
Electric heating paraffin removal insulating wellhead for oil production well Download PDFInfo
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- CN212249961U CN212249961U CN201922323276.4U CN201922323276U CN212249961U CN 212249961 U CN212249961 U CN 212249961U CN 201922323276 U CN201922323276 U CN 201922323276U CN 212249961 U CN212249961 U CN 212249961U
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- paraffin removal
- way joint
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Abstract
The utility model relates to an oil recovery well electrical heating paraffin removal insulating well head. The problems of high cost, complex operation and construction and potential safety hazard in the existing process are mainly solved. The method is characterized in that: the insulating oil pipe hanger (1) is longitudinally divided into an inner sleeve (9) and an outer sleeve (10) by a polytetrafluoroethylene insulating layer (8); the lower end of the inner sleeve (9) is connected with an oil pipe (11), and the upper end of the inner sleeve is connected with an oil pipe short joint (12); the outer sleeve (10) is connected with the upper end of the sleeve four-way joint (2), and the upper part of the sleeve four-way joint (2) is connected with the upper end cover (3) through a bolt; an insulating steel ring (4) and an insulating rubber pad (5) are arranged between the sleeve four-way joint (2) and the upper end cover (3). The electric heating paraffin removal insulating wellhead for the oil production well reduces the loss in the heat transfer process, improves the current heating efficiency, and is safe and convenient to install.
Description
Technical Field
The utility model relates to an oil field machinery oil recovery technical field, in particular to oil recovery well electrical heating paraffin removal insulation well head.
Background
At present, two electrical heating paraffin removal processes are applied to oil fields. One is to install an insulating part on the upper parts of an oil pipe and a sucker rod, and to put a cable into the well, the cable and the oil pipe are synchronously put into the well, so that the closing of a blowout preventer is influenced during operation, and potential safety hazards exist. Meanwhile, when the liquid level in the well reaches the upper part of the insulating part, the electric heating device cannot operate. The other is that the electric heating belt is used for heating the oil pipe, and the problems that the blowout preventer cannot be normally closed because the lower electric heating belt and the oil pipe are synchronously put in for 600-800 meters exist, and the cost of the electric heating belt is high. The two processes have high cost, complex operation and construction, potential safety hazard and difficult popularization.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome the current technology expense that exists among the background art high, the operation construction is loaded down with trivial details, there is the problem of potential safety hazard, and provide an oil recovery well electrical heating paraffin removal insulation well head, this oil recovery well electrical heating paraffin removal insulation well head has reduced the heat transfer process loss, has improved the electric current efficiency that generates heat, and the installation is safe convenient.
The utility model provides a its problem accessible reach as follows technical scheme: the electric heating paraffin removal insulated wellhead for the oil production well comprises an insulated oil pipe hanger, wherein the insulated oil pipe hanger is longitudinally divided into an inner sleeve part and an outer sleeve part by a polytetrafluoroethylene insulating layer; the lower end of the inner sleeve is connected with an oil pipe, and the upper end of the inner sleeve is connected with an oil pipe short joint; the outer sleeve is connected with the upper end of the sleeve four-way joint, and the upper part of the sleeve four-way joint is connected with the upper end cover through a bolt; an insulating steel ring and an insulating rubber pad are arranged between the sleeve four-way joint and the upper end cover.
The electric heating paraffin removal insulated wellhead for the oil production well mainly comprises an insulated oil pipe hanger, a sleeve four-way joint and an upper end cover insulating assembly, so that the oil pipe and the sleeve are completely insulated and separated. The insulating oil pipe hanger is used as a core, and the hanger is divided into two parts, namely an inner sleeve and an outer sleeve, by a polytetrafluoroethylene insulating layer. The lower end of the inner sleeve is connected with an oil pipe to hang an oil pipe column; the upper end of the inner sleeve is connected with the production process by an oil pipe short circuit, so that a liquid accumulation cavity formed by the original sleeve four-way joint and the upper end cover is eliminated, and the insulation effect is improved. The outer sleeve is connected with the four-way joint of the sleeve, thus forming two separated parts (two poles) of the oil sleeve. The sleeve four-way is separated from the upper end cover by an insulating steel ring and an insulating rubber pad, and the end cover is separated from a connecting screw of the four-way by an insulating pad and an insulating sleeve, so that the production flow is separated from the sleeve four-way. This creates a well head with a complete tubing isolated from the casing. When paraffin removal is carried out, two poles of a power supply are respectively connected to an oil pipe and a sleeve on the ground, direct-current voltage stabilization is conducted, the oil pipe and the sleeve are used as the two poles to generate heat, and the purpose of electric heating paraffin removal is achieved.
Compared with the above background art, the utility model can have following beneficial effect: in the aspect of safety of the electric heating paraffin removal insulated wellhead for the oil production well, bosses are processed on the inner sleeve and the outer sleeve of the insulated oil pipe hanger, so that the load capacity between two sets is improved, and the safety and reliability are 100%; the insulated wellhead avoids cable laying, so that the operation is simple and safe, the electric heating process is simplified, and the cost is reduced by 80%; the heating main body is an oil pipe, the temperature of the oil pipe is directly raised by heat generated by current, the paraffin removal time is shortened to 12 hours from the original 48 hours, and the heat utilization rate is improved. The electric heating paraffin removal wellhead equipment is safe and convenient to install, low in cost and high in electric heating efficiency, and solves the problem that an electric heating device is difficult to popularize.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the insulating tubing hanger of the present invention;
fig. 3 is a partially enlarged schematic view of fig. 1 a.
In the figure: 1-an insulated tubing hanger; 2-a sleeve four-way joint; 3-upper end cover; 4-insulating steel ring; 5-rubber pad; 6-bolt insulating sleeve; 7-an insulating spacer; 8-polytetrafluoroethylene insulating layer; 9-inner sleeve; 10-coating the outer sleeve; 11-an oil pipe; 12-oil pipe short circuit.
The specific implementation mode is as follows:
the invention will be further explained with reference to the drawings:
as shown in attached figures 1 and 2, the electric heating paraffin removal insulated wellhead of the oil production well comprises an insulated oil pipe hanger 1, wherein the insulated oil pipe hanger 1 is longitudinally divided into two parts, namely an inner sleeve 9 and an outer sleeve 10, by a polytetrafluoroethylene insulating layer 8; bosses are processed on the inner sleeve 9 and the outer sleeve 10; the lower end of the inner sleeve 9 is connected with an oil pipe 11 to hang an oil pipe column; the upper end of the inner sleeve is connected with an oil pipe short circuit 12 for the production process, so that a liquid accumulation cavity formed by the original sleeve four-way joint and the upper end cover is eliminated, and the insulation effect is improved; the outer sleeve is connected with the upper end of the sleeve four-way joint 2, so that two separated parts (two poles) of the oil sleeve are formed; the upper part of the sleeve four-way joint 2 is connected with an upper end cover 3 through a bolt; an insulating steel ring 4 and an insulating rubber pad 5 are arranged between the sleeve four-way 2 and the upper end cover 3, and as shown in figure 3, an insulating gasket 7 and a bolt insulating sleeve 6 are respectively arranged between the upper end cover 3 and the sleeve four-way 2 as well as between the connecting screw and the post, so that the sleeve four-way is completely insulated from the upper end cover; a sealing ring is arranged between the outer sleeve 10 and the sleeve four-way joint 2; the bosses are processed on the inner sleeve and the outer sleeve, so that the load capacity between the two sets is improved.
When the electric heating paraffin removal insulated wellhead of the oil production well is used for electrically heating an oil pipe for paraffin removal, the installation method of the insulated oil pipe hanger 1 is the same as that of a conventional hanger, an oil pipe column is installed at the lower end of the insulated oil pipe hanger, and an oil pipe short circuit is installed at the upper end of the insulated oil pipe hanger and is used for conveying produced liquid. The sleeve four-way joint 2 and the upper end cover 3 are separated by an insulating steel ring 4 and a rubber pad 5, and the sleeve four-way joint and the upper end cover are completely insulated by connecting a bolt insulating sleeve 6 and an insulating gasket 7. And a tubing anchor is arranged at the 2 nd oil pipe on the pump, so that the oil pipe, the tubing anchor and the casing form a complete current loop. The complete electrical heating paraffin removal insulated well head is composed of a component insulated oil pipe hanger 1, a sleeve four-way joint 2, an upper end cover 3, an insulated steel ring 4, a rubber pad 5, a connecting bolt insulating sleeve 6 and an insulating gasket 7, a power supply is connected to an oil pipe and a sleeve wiring terminal through power distribution equipment, low-voltage high-current direct current is introduced, and the well is subjected to electrical heating paraffin removal unfreezing operation.
Claims (4)
1. The utility model provides an insulating well head of oil recovery well electrical heating paraffin removal, includes insulating tubing hanger (1), its characterized in that: the insulating oil pipe hanger (1) is longitudinally divided into an inner sleeve (9) and an outer sleeve (10) by a polytetrafluoroethylene insulating layer (8); the lower end of the inner sleeve (9) is connected with an oil pipe (11), and the upper end of the inner sleeve is connected with an oil pipe short joint (12); the outer sleeve (10) is connected with the upper end of the sleeve four-way joint (2), and the upper part of the sleeve four-way joint (2) is connected with the upper end cover (3) through a bolt; an insulating steel ring (4) and an insulating rubber pad (5) are arranged between the sleeve four-way joint (2) and the upper end cover (3).
2. The electric heating paraffin removal insulated wellhead for the oil production well according to claim 1, characterized in that: bosses are processed on the inner sleeve (9) and the outer sleeve (10).
3. The electric heating paraffin removal insulated wellhead for the oil production well according to claim 1, characterized in that: an insulating gasket (7) and a bolt insulating sleeve (6) are respectively arranged between the upper end cover (3) and the sleeve four-way joint (2) as well as the connecting screw post.
4. The electric heating paraffin removal insulated wellhead for the oil production well according to claim 1, characterized in that: a sealing ring is arranged between the outer sleeve (10) and the sleeve four-way joint (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922323276.4U CN212249961U (en) | 2019-12-20 | 2019-12-20 | Electric heating paraffin removal insulating wellhead for oil production well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922323276.4U CN212249961U (en) | 2019-12-20 | 2019-12-20 | Electric heating paraffin removal insulating wellhead for oil production well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212249961U true CN212249961U (en) | 2020-12-29 |
Family
ID=73971552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922323276.4U Active CN212249961U (en) | 2019-12-20 | 2019-12-20 | Electric heating paraffin removal insulating wellhead for oil production well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212249961U (en) |
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2019
- 2019-12-20 CN CN201922323276.4U patent/CN212249961U/en active Active
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