CN104047574A - Down-hole liquid release device and method for oil and gas fields - Google Patents
Down-hole liquid release device and method for oil and gas fields Download PDFInfo
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- CN104047574A CN104047574A CN201310078814.2A CN201310078814A CN104047574A CN 104047574 A CN104047574 A CN 104047574A CN 201310078814 A CN201310078814 A CN 201310078814A CN 104047574 A CN104047574 A CN 104047574A
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Abstract
The invention discloses a down-hole liquid release device and a down-hole liquid release method for oil and gas fields and belongs to the technical field of oil and gas field development. The down-hole liquid release device filled with agents is connected to the lower part of a production pipe column and descends to the bottom of an oil well, a piston pump starts to work according to set parameters, and the agents are released into the oil well from a liquid storage pipe at a certain flowing speed and act on the oil well. Along with the release of the liquid agents, the quantity of the agents in the liquid storage pipe is decreased, the liquid level descends, a separating liquid piston moves downwards, and liquid in a shaft enters the liquid storage pipe through a liquid inlet pipe, so that the pressure balance of a system is ensured; the liquid entering the shaft cannot be mixed with the liquid agents in the liquid storage pipe due to the separating liquid piston.
Description
Technical field
The present invention relates to a kind of oil gas field down-hole liquid releasing device and method, belong to oil-gas field development technical field.
Background technology
In oilfield development process, usually need to add various chemical agents in oil well, to reach the objects such as anticorrosion, antiscale, wax control, reduce oil well production fault, safeguard the normal production of oil well.
At present, the mode that oil well dosing adopts mainly contains liquid well head medicine-adding and two kinds of methods of solid down-hole slowly-releasing dosing.Liquid well head medicine-adding is that medicament is added to oil jacket annular space from well head, and medicament flows to down-hole under Action of Gravity Field.Because medicament dosage is little, add self volatilization and tube wall absorption, the amount that medicament arrives pit shaft can not reach designing requirement.Well head medicine-adding need to increase manual maintenance in addition, works loaded down with trivial details, if dosing well is many, or dosing well location is in outlying district, and attendant's working strength is very large.First solid down-hole slowly-releasing dosing technology needs General Medicine to be cured processing, then puts into loading oil pipe, is connected to flow string bottom.Dosing speed depends on the rate of release of solid chemicals, and the rate of release of medicament is subject to the performance of curing compound own, curing process, downhole temperature, flow velocity, the factor impacts such as medicament and well liquid contact area are larger, due to down-hole situation complexity, rate of release is difficult to control, therefore, be difficult to ensure that medicament evenly discharges.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of oil gas field down-hole liquid releasing device and method, realize liquid down-hole automatically, continuously, quantitatively discharge.
A kind of oil gas field down-hole liquid releasing device, is made up of plug, feed tube, separation liquid, liquid storage pipe, piston pump, battery pipe nipple; Use from bottom to up box cupling and screwed connection battery pipe nipple, piston pump, liquid storage pipe, feed tube, plug; The in-built medicament of liquid storage pipe, has separation liquid level above medicament; Feed tube has the screen casing of screen cloth under being, and two ends are provided with screw thread; There is screw thread at plug two; Piston pump outward appearance is cylindric, and two ends are connected with liquid storage pipe and battery pipe nipple by screw thread; Battery pipe nipple is made up of high temperature high-efficiency battery and stainless steel pillar.
1, the present invention is made up of plug, feed tube, separation liquid, liquid storage pipe, piston pump, battery pipe nipple.
2, from bottom to up, use box cupling and screwed connection battery pipe nipple, piston pump, liquid storage pipe, feed tube, plug.The in-built medicament of liquid storage pipe, after installing, adds separation liquid above medicament.
3, feed tube has the screen casing of screen cloth under being, and two ends are provided with screw thread.There is screw thread at plug two.
4, separating liquid is the liquid that does not dissolve each other and do not react with medicament, well liquid, and its density is less than medicament density, and is greater than the liquid-tight degree of well.
5, piston pump outward appearance is cylindric, and two ends are connected with liquid storage pipe and battery pipe nipple by screw thread.
6, battery pipe nipple is made up of high temperature high-efficiency battery and stainless steel pillar.
A kind of oil gas field down-hole liquid method for releasing: the down-hole liquid releasing device that medicament is housed is connected to flow string below, be lowered into oil well bottom, piston pump is started working according to setup parameter, according to certain flow velocity, medicament is discharged into oil well from liquid storage pipe, and oil well is played a role.Along with the release of liquid preparation, in liquid storage pipe, medicament reduces, liquid level declines, separating liquid piston also moves downward, liquid in pit shaft leads to into feed tube and enters liquid storage pipe, guarantee system pressure balance, and due to liquid separation piston, the pit shaft liquid entering can not mix with the liquid preparation in liquid storage pipe.
Beneficial effect of the present invention: the down-hole liquid releasing device that medicament is housed is connected to oil well production string end, open switch, set the parameter of piston pump according to the dosage of medicament design, realize medicament automatically, quantitatively, continuous release, make powder performance obtain maximum performance.Release discharge capacity is 5～100ml/ hour, sustainable operation 2 years.
Brief description of the drawings
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the present invention and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention, as schemed wherein:
Fig. 1 is structural representation of the present invention.
Fig. 2 is structural representation of the present invention.
Below in conjunction with drawings and Examples, the present invention is further described.
Detailed description of the invention
Obviously the many modifications and variations that, those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: as shown in Figure 1 and Figure 2,
In figure, 01 plug, 02 feed tube, 03 are separated liquid, 04 liquid storage pipe, 05 piston pump, 06 battery pipe nipple
01 plug, 02 feed tube, 03 are separated liquid, 04 liquid storage pipe, 05 piston pump, 06 battery pipe nipple
A kind of oil gas field down-hole liquid releasing device, is made up of plug 1, feed tube 2, separation liquid 3, liquid storage pipe 4, piston pump 5, battery pipe nipple 6; Battery pipe nipple 6 is by box cupling and screwed connection piston pump 5; piston pump 5 is by box cupling and screwed connection liquid storage pipe 4; liquid storage pipe 4 is by box cupling and screwed connection feed tube 2, and feed tube 2, by box cupling and screwed connection plug 1, has the liquid 3 of separation or separates liquid level between liquid storage pipe 4 and feed tube 2; The in-built medicament of liquid storage pipe 4, after installing, adds above medicament and separates liquid 3; Feed tube 2 has the screen casing of screen cloth under being, and two ends are provided with screw thread; There is screw thread at plug 1 two; Separate liquid 3 liquid for not dissolving each other and do not react with medicament, well liquid, its density is less than medicament density, and is greater than the liquid-tight degree of well; Piston pump 5 outward appearances are cylindric, and two ends are connected with liquid storage pipe 4 and battery pipe nipple 6 by screw thread; Battery pipe nipple 6 is made up of high temperature high-efficiency battery and stainless steel pillar.
Top connected pipes 7, oil well pump 8, the production tube 9 of down-hole liquid releasing device for a kind of oil gas field; Put into oil well 10.
Embodiment 2:
Taking certain oil well as example, this casing is 5 of API standard
1/2well production tube is 2 of API standard
7/8oil pipe, average pump detection period 1 year, every daily fluid production rate 50 sides, production fluid density is 0.92g/cm
3, for ensureing that oil well normally produces, daily requirement is 1.2g/cm to adding continuously the density of 20ppm in this well
3medicament A.
The rate of release that calculates and set piston pump according to above data is 0.58ml/min, in the time of oil well operation completion, connects battery pipe nipple and piston pump and 11 2
7/8liquid storage pipe adds 365 kilograms of (approximately 304 liters) medicament A in liquid storage pipe, and then adding 3 kilograms of density is 1.0～1.1g/cm
3separating liquid.Connect feed tube and plug.Finally device is connected to production tube bottom by box cupling, because plug is topmost, therefore device is not directly communicated with oil pipe.
As mentioned above, embodiments of the invention are explained, but as long as not departing from fact inventive point of the present invention and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection scope of the present invention.
Claims (3)
1. an oil gas field down-hole liquid method for releasing, it is characterized in that the down-hole liquid releasing device that medicament is housed to be connected to flow string below, be lowered into oil well bottom, piston pump is started working according to setup parameter, according to certain flow velocity, medicament is discharged into oil well from liquid storage pipe, and oil well is played a role; Along with the release of liquid preparation, in liquid storage pipe, medicament reduces, liquid level declines, separating liquid piston also moves downward, liquid in pit shaft leads to into feed tube and enters liquid storage pipe, guarantee system pressure balance, and due to liquid separation piston, the pit shaft liquid entering can not mix with the liquid preparation in liquid storage pipe.
2. a kind of oil gas field down-hole liquid method for releasing according to claim 1, it is characterized in that the down-hole liquid releasing device that medicament is housed to be connected to oil well production string end, open switch, set the parameter of piston pump according to the dosage of medicament design, realize medicament automatically, quantitatively, continuous release, make powder performance obtain maximum performance; Release discharge capacity is 5～100ml/ hour.
3. an oil gas field down-hole liquid releasing device, is characterized in that: be made up of plug, feed tube, separation liquid, liquid storage pipe, piston pump, battery pipe nipple; Use from bottom to up box cupling and screwed connection battery pipe nipple, piston pump, liquid storage pipe, feed tube, plug; The in-built medicament of liquid storage pipe, has separation liquid level above medicament; Feed tube has the screen casing of screen cloth under being, and two ends are provided with screw thread; There is screw thread at plug two; Piston pump outward appearance is cylindric, and two ends are connected with liquid storage pipe and battery pipe nipple by screw thread; Battery pipe nipple is made up of high temperature high-efficiency battery and stainless steel pillar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078814.2A CN104047574B (en) | 2013-03-13 | 2013-03-13 | A kind of oil gas field down-hole liquid discharges device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078814.2A CN104047574B (en) | 2013-03-13 | 2013-03-13 | A kind of oil gas field down-hole liquid discharges device and method |
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| CN104047574A true CN104047574A (en) | 2014-09-17 |
| CN104047574B CN104047574B (en) | 2016-12-28 |
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| CN201310078814.2A Active CN104047574B (en) | 2013-03-13 | 2013-03-13 | A kind of oil gas field down-hole liquid discharges device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937368A (en) * | 2016-05-26 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | Novel composite blockage removal acidizing pipe nipple |
| CN105672969B (en) * | 2015-12-29 | 2018-01-05 | 中国石油天然气股份有限公司 | Fireflood producing well corollary apparatus |
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| EP1532346B1 (en) * | 2002-08-20 | 2008-07-30 | Baker Hughes Incorporated | Method for controlled placement of oilfield chemicals and composition useful for practicing same |
| CN201915852U (en) * | 2010-12-23 | 2011-08-03 | 中国石油天然气股份有限公司 | Oil pumping string for high wax content oil well |
| CN202055806U (en) * | 2011-01-27 | 2011-11-30 | 中国石油化工股份有限公司 | Down-well automatic quantitative chemical adding device of oil well |
| CN202338309U (en) * | 2011-11-03 | 2012-07-18 | 中国石油天然气股份有限公司 | Underground automatic quantitative medicine-feeding flow string of pumping well |
| CN202500535U (en) * | 2011-12-16 | 2012-10-24 | 中国石油天然气股份有限公司 | Oil pumping tubing string and oil pumping rod string with automatic paraffin removing apparatus |
-
2013
- 2013-03-13 CN CN201310078814.2A patent/CN104047574B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1532346B1 (en) * | 2002-08-20 | 2008-07-30 | Baker Hughes Incorporated | Method for controlled placement of oilfield chemicals and composition useful for practicing same |
| CN201915852U (en) * | 2010-12-23 | 2011-08-03 | 中国石油天然气股份有限公司 | Oil pumping string for high wax content oil well |
| CN202055806U (en) * | 2011-01-27 | 2011-11-30 | 中国石油化工股份有限公司 | Down-well automatic quantitative chemical adding device of oil well |
| CN202338309U (en) * | 2011-11-03 | 2012-07-18 | 中国石油天然气股份有限公司 | Underground automatic quantitative medicine-feeding flow string of pumping well |
| CN202500535U (en) * | 2011-12-16 | 2012-10-24 | 中国石油天然气股份有限公司 | Oil pumping tubing string and oil pumping rod string with automatic paraffin removing apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672969B (en) * | 2015-12-29 | 2018-01-05 | 中国石油天然气股份有限公司 | Fireflood producing well corollary apparatus |
| CN105937368A (en) * | 2016-05-26 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | Novel composite blockage removal acidizing pipe nipple |
| CN105937368B (en) * | 2016-05-26 | 2019-04-02 | 中国石油集团渤海钻探工程有限公司 | A kind of NEW TYPE OF COMPOSITE Breakdown acidizing pipe nipple |
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| Publication number | Publication date |
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| CN104047574B (en) | 2016-12-28 |
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