CN1215126A - Downhole radio-frequency electromagnetic oil-production system - Google Patents
Downhole radio-frequency electromagnetic oil-production system Download PDFInfo
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- CN1215126A CN1215126A CN 97119052 CN97119052A CN1215126A CN 1215126 A CN1215126 A CN 1215126A CN 97119052 CN97119052 CN 97119052 CN 97119052 A CN97119052 A CN 97119052A CN 1215126 A CN1215126 A CN 1215126A
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- electromagnetic oil
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Abstract
The present invention relates to a downhole radio-frequency electromagnetic oil-production system formed from ground power-feeding system, oil-pumping system and downhole radio-frequency system. Said invention does not use radio-frequency transmission line to transmit energy, so that its radio-frequency loss and power consumption are greatly reduced, and at the same time, said system can be compatible with existent well completion and cementing, and is easy to instal and construct.
Description
The invention belongs to the petroleum collection system, particularly gather the system of viscous crude.
Viscous crude is meant proportion greater than 0.934 crude oil, and is because it is than great, mobile poor.So thickened oil recovery is a great problem of industry that recovers the oil.Whole world viscous crude total resources is very big, and the technology workable reserves only is 1/10th of a total amount at present.In global resources exhausted day by day today, effectively utilize subterranean resource, improve oil recovery factor, be strategic pressing for.In order to improve the thickened oil recovery rate, people have taked various methodologies, yet these methods all exist major defect.The one, validity problem as the new well initial stage is used effective steam injection, can lose efficacy in use for some time gradually, and oil recovery factor obviously descends; The 2nd, use these methods and also can cause irreversible aftereffect, make us can't adopt later the further extraction remaining oil of more promising other method that occurs in the future, can destroy the ecological homeostasis simultaneously.Along with the exploitation of oil reservoir and the ecology that exploits underground resources is required stricter, " flawless " (from viewpoint of infringement oil reservoir nature) processing method is more and more important.At present the physical field advocate approach is more effective, and particularly the radio frequency oil-extraction method had proved the efficient oil production method of tool prospect physically already.But the radio frequency oil extraction system all is based on the ground radio frequency source, by radio frequency transmission bundle of lines energy feed-in down-hole this system schema of antenna.The existence of radio-frequency transmission line makes it to be used for deep-well (2000 meters) oil recovery and becomes very difficult, and subject matter is:
1, radio-frequency transmission line increases and increases along with well depth, and the radio-frequency transmission line cost increases;
2, the RF energy loss is big, thereby the oil recovery power consumption is big;
3, incompatible with completion, well shaft fixing technology, constructional difficulties.See United States Patent (USP) 5065819.
The objective of the invention is radio frequency source is directly placed the down-hole, directly heat oil reservoir, improve the flowability of viscous crude, thereby improve recovery ratio by transmitting antenna.
Main feature of the present invention is that feed system, oil pumping system and downhole radio-frequency system constitute electromagnetic oil-production system.
The present invention does not use radio-frequency transmission line to transmit energy, so radio frequency loss reduces greatly, power consumption also significantly reduces.While native system and existing completion, well cementation compatibility, construction and installation are easy.
Accompanying drawing is a system construction drawing
1, power transformer; 2, electrical power control cabinet; 3, air compressor; 4, oil pumper;
5, hollow rod; 6, hollow oil well pump; 7, oil pipe; 8, sleeve pipe; 9, producing fluid level;
10, compressed air channel; 11, flexible compression air hose; 12, rectifier; 13,14, radio-frequency module; 15, vacuum casting; 16, travelling-wave aerial; 17, dielectric-sleeve.
Below in conjunction with accompanying drawing in detail the present invention is described in detail.
Know that by accompanying drawing central idea of the present invention is that the efficient also radio frequency source of miniaturization directly is placed under the oil well, makes radio frequency source pass through antenna and directly oil reservoir is heated.Ground feed system to the radio frequency source feed, and utilizes hollow rod to provide the cooling duct for radio frequency source by R a T.This method makes the energy of loss on radio-frequency transmission line significantly reduce, and oil recovery efficiency improves greatly.Simultaneously, native system and existing completion, well cementation compatibility are utilized the structure that has oil well now very dexterously, have solved because of radio frequency source being placed on a series of problems that bring the down-hole.
Be placed on ground power transformer 1 and be three-phase → single-phase transformer, this power supply mode has been simplified the interchange power supplying and distributing equipment to the full extent.2 is electrical power control cabinet, and its effect is that power supply, the working procedure to radio frequency source controlled.Oil pumping system is made up of oil pumper 4, hollow cylindrical sucker rod 5, hollow oil well pump 6.Air compressor 3 links to each other with hollow rod 5, and compressed air passes through by hollow rod 5, disc radio- frequency module 13,14, and hollow antenna 15, the air-cooled passage of forming provide forced air cooling to radio frequency source.In order to prevent electric leakage, the cladding material of hollow oil well pump piston, sucker rod 5 is isolators.Sucker rod adopts hollow-core construction, be sucker rod be again air channel and AC current supply line simultaneously.12,13,14,16 is radio frequency source, because down-hole high temperature so radio frequency source has vacuum casting 15, has heat insulating function.AC powers to radio frequency source through oil pipe, sleeve; 16 is travelling-wave aerial, adopts hollow-core construction, is helical type or medium loaded type or bore battle array travelling-wave aerial; The 17-dielectric-sleeve is for electromagenetic wave radiation provides passage.
Claims (8)
1. downhole radio-frequency electromagnetic oil-production system comprises ground feed system, oil pumping system, it is characterized in that also comprising the downhole radio-frequency system.
2. by the described downhole radio-frequency electromagnetic oil-production system of claim 1, it is characterized in that said ground feed system comprises transformer 1, switch board 2.
3. by the described downhole radio-frequency electromagnetic oil-production system of claim 1, it is characterized in that said oil pumping system is made up of oil pumper 4, hollow cylindrical sucker rod 5, annular pump 6.
4. by the described downhole radio-frequency electromagnetic oil-production system of claim 3, it is characterized in that said hollow rod 5 links with air compressor 3.
5. by claim 1 or 3 described downhole radio-frequency electromagnetic oil-production systems, it is characterized in that the piston cladding material outer and sucker rod 5 of annular pump 6 is isolators.
6. by the described downhole radio-frequency electromagnetic oil-production system of claim 1, it is characterized in that said downhole radio-frequency system is made up of rectifier 12, radio-frequency module 13,14, travelling-wave aerial 16.
7. by claim 1 or 6 described downhole radio-frequency electromagnetic oil-production systems, it is characterized in that said radio system is placed in 7 times parts casing pipes 8 of oil pipe.
8. by claim 1 or 7 described downhole radio-frequency electromagnetic oil-production systems, it is characterized in that said radio system has vacuum casting 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97119052A CN1061731C (en) | 1997-10-21 | 1997-10-21 | Downhole radio-frequency electromagnetic oil-production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97119052A CN1061731C (en) | 1997-10-21 | 1997-10-21 | Downhole radio-frequency electromagnetic oil-production system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1215126A true CN1215126A (en) | 1999-04-28 |
| CN1061731C CN1061731C (en) | 2001-02-07 |
Family
ID=5175156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97119052A Expired - Fee Related CN1061731C (en) | 1997-10-21 | 1997-10-21 | Downhole radio-frequency electromagnetic oil-production system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1061731C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305992C (en) * | 2003-12-09 | 2007-03-21 | 西北工业大学 | Display material of green electronic ink in color lake class |
| CN101535189B (en) * | 2006-08-11 | 2012-06-27 | 海卓佩斯控股有限公司 | Treating liquids in oil extraction |
| CN104428491A (en) * | 2012-07-13 | 2015-03-18 | 哈里公司 | Method of recovering hydrocarbon resources while injecting solvent and supplying radio frequency power and related apparatus |
| CN105575087A (en) * | 2008-04-04 | 2016-05-11 | 通用电气石油和天然气英国有限公司 | Communication System for a Hydrocarbon Extraction Plant |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3782465A (en) * | 1971-11-09 | 1974-01-01 | Electro Petroleum | Electro-thermal process for promoting oil recovery |
| US4670634A (en) * | 1985-04-05 | 1987-06-02 | Iit Research Institute | In situ decontamination of spills and landfills by radio frequency heating |
| US4638862A (en) * | 1985-10-10 | 1987-01-27 | Texaco Inc. | Means and method for producing hydrocarbons from an earth formation during the RF retorting of a hydrocarbon stratum |
| US4705108A (en) * | 1986-05-27 | 1987-11-10 | The United States Of America As Represented By The United States Department Of Energy | Method for in situ heating of hydrocarbonaceous formations |
-
1997
- 1997-10-21 CN CN97119052A patent/CN1061731C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305992C (en) * | 2003-12-09 | 2007-03-21 | 西北工业大学 | Display material of green electronic ink in color lake class |
| CN101535189B (en) * | 2006-08-11 | 2012-06-27 | 海卓佩斯控股有限公司 | Treating liquids in oil extraction |
| CN105575087A (en) * | 2008-04-04 | 2016-05-11 | 通用电气石油和天然气英国有限公司 | Communication System for a Hydrocarbon Extraction Plant |
| CN104428491A (en) * | 2012-07-13 | 2015-03-18 | 哈里公司 | Method of recovering hydrocarbon resources while injecting solvent and supplying radio frequency power and related apparatus |
| US10260325B2 (en) | 2012-07-13 | 2019-04-16 | Harris Corporation | Method of recovering hydrocarbon resources while injecting a solvent and supplying radio frequency power and related apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1061731C (en) | 2001-02-07 |
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