CN110644955A - High-efficient set composite of viscous crude viscosity reduction - Google Patents
High-efficient set composite of viscous crude viscosity reduction Download PDFInfo
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- CN110644955A CN110644955A CN201810676106.1A CN201810676106A CN110644955A CN 110644955 A CN110644955 A CN 110644955A CN 201810676106 A CN201810676106 A CN 201810676106A CN 110644955 A CN110644955 A CN 110644955A
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- viscosity reduction
- outer pipe
- connector
- thick oil
- joint
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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
- 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
Abstract
The invention relates to the technical field of thick oil viscosity reduction, in particular to a thick oil viscosity reduction efficient composite device which comprises a strong magnetic viscosity reduction device, a solid slow-release full-soluble type underground viscosity reduction device and a mechanical emulsification device, wherein the strong magnetic viscosity reduction device comprises a first connector, a strong magnet is arranged inside a first outer pipe, the lower end of a second outer pipe is connected with a third connector in a threaded manner, and the lower end of the third outer pipe is connected with a fourth connector in a threaded manner. Compared with the prior art, the invention does not need any electric energy or heat energy, is a clean pollution-free environment-friendly product, realizes innovation and breakthrough on a shaft viscosity reduction technology, mainly realizes viscosity reduction of thick oil by mechanical emulsification, chemical emulsification and magnetization, is an independent unit and a composite action of comprehensive viscosity reduction, can be randomly selected in an installation and combination sequence, is not necessarily hung under a pump simply according to the drawing, does not need ground auxiliary equipment and chemical agents to be added periodically, and reduces the labor cost and the labor intensity; the viscosity reduction cost is greatly reduced.
Description
Technical Field
The invention relates to the technical field of viscosity reduction of thick oil, in particular to a high-efficiency viscosity reduction compounding device for thick oil.
Background
The heavy oil field in the world has rich resources, wide distribution and important exploitation value and requirement, but has high viscosity and great exploitation difficulty. The heavy oil field development and production increasing process mainly comprises steam injection huff and puff or steam flooding and CO2Throughput or CO2The viscosity of reservoir fluid of an oil reservoir is improved by driving, burning the oil reservoir and the like, but crude oil fluid flows to a shaft from a stratum, the viscosity of thick oil in the shaft is high due to the temperature reduction or the degassing phenomenon, the thick oil enters a pump barrel slowly, a pump valve cannot be closed or opened in time, and the oil well cannot output liquid or has low yield. Even the pumping unit is asynchronous due to different friction resistances during the upper stroke and the lower stroke, the pumping efficiency is reduced, and even the production recovery of the pump is required. These conditions occurThe oil well needs the shaft hot washing circulation, but because the thick oil reservoir stratum pressure coefficient is low, a large amount of leakage phenomena exist during well washing, so that the well washing liquid can not return to the ground, a valve still can not be closed or opened in time, the jam release fails, and finally, only the pump detection operation can be carried out. In order to ensure that the liquid is discharged back in the well washing process, large-discharge circulation is needed to ensure the flow speed of the liquid, so that secondary pollution to the stratum is inevitably caused, and the result that the liquid is not discharged or the liquid output is obviously reduced still exists. The viscosity reduction technology of the shaft is to reduce the flow resistance problem of thick oil in the shaft in the process of exploitation by various methods. The prior technical scheme mainly comprises the following steps:
firstly, the chemical viscosity reduction technology of the shaft: a technique for producing heavy oil by adding chemicals to a wellbore fluid to reduce the viscosity of the fluid. The action principle is that a certain amount of water-soluble surfactant solution is added into wellbore fluid, so that crude oil is dispersed in active water in the form of tiny oil droplets to form an oil-in-water emulsion or an oil-in-water type coarse dispersion system, and the effects of emulsifying, reducing viscosity, moistening and reducing resistance are achieved. Chemical viscosity reduction of a shaft can be divided into a dosing mode of emulsification viscosity reduction on a pump and emulsification viscosity reduction under the pump, the main influence factor of the chemical viscosity reduction is the viscosity reduction rate of a viscosity reducer, the viscosity reduction rate is related to the properties of crude oil and formation water, although the viscosity reducer products are more at present, the viscosity reducer products cannot be generally used in various heavy oil fields, certain application range limitations exist, in order to improve the viscosity reduction rate, corresponding research and screening on the viscosity reducer according to the characteristics of specific blocks are required, the research and development cost is high, and the period is long.
Secondly, shaft electrical heating viscosity reduction technology: the underground electric heating tool is powered, electric energy is converted into thermodynamic energy to enable the underground electric heating tool to generate heat, the temperature of shaft crude oil is improved, the viscosity of the crude oil is reduced by utilizing the temperature sensitivity of the viscosity of thick oil, the fluidity of the crude oil is improved, and the production capacity of an oil well is recovered. The method has the characteristics of high operation cost, low heating efficiency and high failure rate.
Thirdly, the dilution and viscosity reduction oil extraction technology: thin oil is injected into the bottom of the oil well through an oil pipe or an oil sleeve annulus, so that the thin oil and thick oil produced by a stratum are fully mixed, the viscosity of the thick oil, the liquid column pressure of the thick oil and the resistance in the thick oil flowing process are reduced, and the oil well recovers production or reaches mechanical oil extraction conditions. The dosing mode can be divided into an on-pump dilution viscosity reduction mode and an under-pump dilution viscosity reduction mode, and the dilution viscosity reduction process is at the cost of sacrificing thin oil resources; and when the water content of the oil well reaches a certain degree and the produced fluid is reversely emulsified, the viscosity reduction effect is poor. Due to the difference of the price of the thick oil and the thin oil, the viscosity reduction of the thin oil is economically lost.
Fourthly, a wellbore thermal fluid circulation viscosity reduction technology: the temperature of crude oil in a shaft is increased by utilizing hot fluid (hot water and steam) generated by a ground boiler, the viscosity of the crude oil is reduced by utilizing the temperature sensitivity of the viscosity of the thick oil, and the recovery ratio of the crude oil is increased. The hot fluid circulation can be divided into shaft hot fluid circulation and hollow sucker rod hot fluid circulation, and the hot fluid circulation process is mainly suitable for thick oil reservoirs with shallow oil layers and low viscosity and has the characteristics of more ground equipment configuration, complex later maintenance, high cost and low heating efficiency.
The scheme has the defects of high power consumption, high cost and incapability of fully mixing the liquid viscosity reducer with the thick oil to achieve the viscosity reduction effect, and therefore the thick oil viscosity reduction efficient compound device is provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a high-efficiency viscosity-reducing composite device for thick oil.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-efficiency composite device for viscosity reduction of thick oil is designed, which comprises a strong magnetic viscosity reduction device, a solid slow-release full-soluble underground viscosity reduction device and a mechanical emulsification device, it is characterized in that the strong magnetic viscosity reduction device comprises a first joint, the lower end of the first joint is connected with a first outer pipe through external threads, a strong magnet is arranged inside the first outer pipe, a second joint is connected in the lower end of the first outer pipe, the solid slow-release full-soluble well descending sticking device comprises a second outer pipe, the upper end of the second outer pipe is connected with the second joint through internal threads, a third joint is connected with the lower end of the second outer pipe through internal threads, the upper end of the third joint is connected with an inner pipe through external threads, a second cavity is formed between the inner pipe and the second outer pipe, the mechanical emulsifying device comprises a third outer pipe, the upper end of the third outer pipe is in threaded connection with a third joint, and the lower end of the third outer pipe is in threaded connection with a fourth joint.
Preferably, the inside of third outer tube is equipped with the efflux disk seat, and the lower extreme and the fourth of efflux disk seat connect contradict, the lower extreme middle part female connection of efflux disk seat has the efflux case, the upper end female connection of efflux disk seat has the block, the upper end middle part of efflux disk seat is equipped with the harmony stopper pipe, the upper end of efflux disk seat is equipped with first cavity, the both sides of first cavity all are equipped with the third through-hole.
Preferably, the inside of inner tube is equipped with solid sustained-release viscosity reducer, the upper end female connection of inner tube has the end cap of taking a breath, the inside of end cap of taking a breath is equipped with the fourth through-hole, the fourth through-hole is "worker" style of calligraphy structure, the outer wall lower part of inner tube evenly is equipped with a plurality of first through-holes, the outer wall upper portion that the third connects evenly is equipped with a plurality of second through-holes.
The high-efficiency viscosity-reducing composite device for the thick oil has the beneficial effects that: compared with the prior art, the invention does not need any electric energy or heat energy, is a clean pollution-free environment-friendly product, realizes innovation and breakthrough on a shaft viscosity reduction technology, mainly realizes viscosity reduction of thick oil by mechanical emulsification, chemical emulsification and magnetization, is an independent unit and a composite action of comprehensive viscosity reduction, can be randomly selected in an installation and combination sequence, is not necessarily hung under a pump only according to the drawing, does not need ground auxiliary equipment and chemical agents to be added periodically, reduces labor cost and labor intensity, and greatly reduces viscosity reduction cost.
Drawings
Fig. 1 is a schematic structural view of a high-efficiency viscous oil viscosity reduction composite device provided by the invention.
In the figure: the device comprises a first joint 1, a first outer pipe 2, a strong magnet 3, a second joint 4, a ventilation plug 5, a fourth through hole 51, a second outer pipe 6, a solid slow-release viscosity reducer 7, an inner pipe 8, a first through hole 81, a third joint 9, a second through hole 91, a cap 10, a jet valve seat 11, a third through hole 111, a first cavity 112, a blocking pipe 113, a jet valve core 12, a third outer pipe 13, a fourth joint 14, a strong-magnetic viscosity reduction device 15, a solid slow-release full-dissolution type downhole viscosity reduction device 16, a mechanical emulsification device 17 and a second cavity 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1, a high-efficiency composite device for viscosity reduction of thick oil, comprising a strong magnetic viscosity reduction device 15, a solid slow-release fully-soluble downhole viscosity reduction device 16 and a mechanical emulsification device 17, wherein the strong magnetic viscosity reduction device 15 comprises a first joint 1, the lower end of the first joint 1 is in threaded connection with a first outer pipe 2, a strong magnet 3 is arranged inside the first outer pipe 2, the strong magnet 3 can magnetize fluid, improve the polarity direction of magnetic substances of the fluid, reduce viscosity and prevent wax, a second joint 4 is connected inside the lower end of the first outer pipe 2, the solid slow-release fully-soluble downhole viscosity reduction device 16 comprises a second outer pipe 6, the upper end of the second outer pipe 6 is in threaded connection with the second joint 4, the lower end of the second outer pipe 6 is in threaded connection with a third joint 9, the upper end of the third joint 9 is in threaded connection with an inner pipe 8, a solid slow-release viscosity reduction agent 7 is arranged inside the inner pipe, can dilute with the oil of flowing through and mix, reduce viscosity, the upper end female connection of inner tube 8 has end cap 5 of taking a breath, the inside of end cap 5 of taking a breath is equipped with fourth through-hole 51, fourth through-hole 51 is "worker" style of calligraphy structure, but not limited to "worker" style of calligraphy structure, worker "style of calligraphy structure can not make the upper portion of inner tube 8 produce the negative pressure, the solid slowly-releasing viscosity reducer 7 of being convenient for is released, simultaneously" worker "style of calligraphy through-hole can not make solid slowly-releasing viscosity reducer 7 spill easily, the outer wall lower part of inner tube 8 evenly is equipped with a plurality of first through-holes 81, the outer wall upper portion of third joint 9 evenly is.
Form second cavity 18 between inner tube 8 and the second outer tube 6, mechanical emulsification device 17 includes third outer tube 13, the inside of third outer tube 13 is equipped with efflux disk seat 11, and the lower extreme of efflux disk seat 11 is contradicted with fourth joint 14, the lower extreme middle part female connection of efflux disk seat 11 has efflux case 12, the upper end female connection of efflux disk seat 11 has block 10, form the blasting chamber between block 10 and the first cavity 112, can explode the bold viscous crude into the fritter, and form the emulsification with the mixed water and mix, the upper end middle part of efflux disk seat 11 is equipped with harmony stopper pipe 113, the upper end of efflux disk seat 11 is equipped with first cavity 112, the both sides of first cavity 112 all are equipped with third through hole 111, annular flow channel between efflux disk seat 11 and the efflux case 12, and annular flow channel has certain angle, so that the fluid forms the cavitation effect during the process.
The upper end of the third outer tube 13 is connected with the third joint 9 in a threaded manner, and the lower end of the third outer tube 13 is connected with the fourth joint 14 in a threaded manner.
The working principle is as follows: during the use, the profit gets into from fourth joint 14, and efflux disk seat 11 can make the play liquid produce high-speed efflux, and through first cavity 112, produce cavitation effect, make the bold viscous crude blasting, flow out from third through-hole 111, flow into second cavity 18 through second through-hole 91, release the mixture with the solid slowly-releasing viscosity reducer 7 that flows out from first through-hole 81, and the ferromagnetic body 3 flows through, and ferromagnetic body 3 magnetizes it, flows out from first joint 1.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. The high-efficiency composite device for viscosity reduction of thick oil comprises a strong magnetic viscosity reduction device (15), a solid slow-release full-dissolution type underground viscosity reduction device (16) and a mechanical emulsification device (17), and is characterized in that the strong magnetic viscosity reduction device (15) comprises a first connector (1), the lower end of the first connector (1) is in threaded connection with a first outer pipe (2), a strong magnet (3) is arranged inside the first outer pipe (2), a second connector (4) is connected inside the lower end of the first outer pipe (2), the solid slow-release full-dissolution type underground viscosity reduction device (16) comprises a second outer pipe (6), the upper end of the second outer pipe (6) is in threaded connection with the second connector (4), the lower end of the second outer pipe (6) is in threaded connection with a third connector (9), the upper end of the third connector (9) is in threaded connection with an inner pipe (8), and a second cavity (18) is formed between the inner pipe (8) and the second outer pipe (6), the mechanical emulsification device (17) comprises a third outer pipe (13), the upper end of the third outer pipe (13) is in threaded connection with a third joint (9), and the lower end of the third outer pipe (13) is in threaded connection with a fourth joint (14).
2. The thick oil viscosity reduction efficient compounding device according to claim 1, wherein a jet valve seat (11) is arranged inside the third outer pipe (13), the lower end of the jet valve seat (11) abuts against a fourth joint (14), a jet valve core (12) is connected to the middle of the lower end of the jet valve seat (11) in a threaded manner, a cap (10) is connected to the upper end of the jet valve seat (11) in a threaded manner, a blocking pipe 113 is arranged in the middle of the upper end of the jet valve seat (11), a first cavity (112) is arranged at the upper end of the jet valve seat (11), and third through holes (111) are formed in two sides of the first cavity (112).
3. The high-efficiency thick oil viscosity reduction composite device according to claim 1, wherein a solid slow-release viscosity reducer (7) is arranged inside the inner pipe (8), a ventilation plug (5) is connected to the upper end of the inner pipe (8) in a threaded manner, a fourth through hole (51) is arranged inside the ventilation plug (5), the fourth through hole (51) is of an I-shaped structure, a plurality of first through holes (81) are uniformly arranged on the lower portion of the outer wall of the inner pipe (8), and a plurality of second through holes (91) are uniformly arranged on the upper portion of the outer wall of the third joint (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810676106.1A CN110644955A (en) | 2018-06-27 | 2018-06-27 | High-efficient set composite of viscous crude viscosity reduction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810676106.1A CN110644955A (en) | 2018-06-27 | 2018-06-27 | High-efficient set composite of viscous crude viscosity reduction |
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| CN110644955A true CN110644955A (en) | 2020-01-03 |
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| CN201810676106.1A Pending CN110644955A (en) | 2018-06-27 | 2018-06-27 | High-efficient set composite of viscous crude viscosity reduction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228009A (en) * | 2020-12-14 | 2021-01-15 | 东营华辰石油装备有限公司 | Wellhead continuous dosing device and dosing method thereof |
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| US6190141B1 (en) * | 1997-05-21 | 2001-02-20 | Baker Hughes Incorporated | Centrifugal pump with diluent injection ports |
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| CN202991003U (en) * | 2012-12-28 | 2013-06-12 | 王刚 | Strongly-magnetic spiral turbulence high-frequency impulse paraffin control viscosity reduction device |
| CN104500006A (en) * | 2014-12-26 | 2015-04-08 | 中国石油天然气股份有限公司 | Combined under-pump oil production increasing device |
| CN204457627U (en) * | 2014-12-26 | 2015-07-08 | 中国石油天然气股份有限公司 | Oily device is increased under pump |
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2018
- 2018-06-27 CN CN201810676106.1A patent/CN110644955A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU956759A1 (en) * | 1980-11-25 | 1982-09-07 | Ивано-Франковский Институт Нефти И Газа | Device for feeding reagents into a well |
| US4687420A (en) * | 1986-06-23 | 1987-08-18 | Arthur Bentley | Sonic pressure wave pump with liquid heating and elevating mechanism |
| US6190141B1 (en) * | 1997-05-21 | 2001-02-20 | Baker Hughes Incorporated | Centrifugal pump with diluent injection ports |
| US6353706B1 (en) * | 1999-11-18 | 2002-03-05 | Uentech International Corporation | Optimum oil-well casing heating |
| CN1277311A (en) * | 2000-07-13 | 2000-12-20 | 孙盛凯 | Oil well viscosity reducing method |
| CN2771474Y (en) * | 2005-03-05 | 2006-04-12 | 黄石市新科石油机械配件厂 | Wax-proof viscosity-reducing oil-increasing device |
| CN101560876A (en) * | 2008-04-19 | 2009-10-21 | 邓海波 | Multifunctional processor for liquid generated underground |
| CN201599018U (en) * | 2010-02-02 | 2010-10-06 | 陕西简洁美业汽车贸易有限公司 | Multifunctional oil enhancing device |
| CN202483516U (en) * | 2012-01-19 | 2012-10-10 | 陕西星辰石油科技有限责任公司 | Demulsification and paraffin removal device for oil well |
| CN202991003U (en) * | 2012-12-28 | 2013-06-12 | 王刚 | Strongly-magnetic spiral turbulence high-frequency impulse paraffin control viscosity reduction device |
| CN104500006A (en) * | 2014-12-26 | 2015-04-08 | 中国石油天然气股份有限公司 | Combined under-pump oil production increasing device |
| CN204457627U (en) * | 2014-12-26 | 2015-07-08 | 中国石油天然气股份有限公司 | Oily device is increased under pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228009A (en) * | 2020-12-14 | 2021-01-15 | 东营华辰石油装备有限公司 | Wellhead continuous dosing device and dosing method thereof |
| CN112228009B (en) * | 2020-12-14 | 2021-03-02 | 东营华辰石油装备有限公司 | Wellhead continuous dosing device and dosing method thereof |
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Application publication date: 20200103 |