CN106437661A - Method capable of directly improving permeability of oil gas reservoir - Google Patents
Method capable of directly improving permeability of oil gas reservoir Download PDFInfo
- Publication number
- CN106437661A CN106437661A CN201610899431.5A CN201610899431A CN106437661A CN 106437661 A CN106437661 A CN 106437661A CN 201610899431 A CN201610899431 A CN 201610899431A CN 106437661 A CN106437661 A CN 106437661A
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- China
- Prior art keywords
- reservoir
- resonator
- permeability
- air compressor
- acceleration sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Abstract
The invention discloses a method capable of directly improving the permeability of an oil gas reservoir. Reservoir resonance is caused by a pneumatic resonance device in a well and micropores in the reservoir are increased, so that the permeability is improved. A resonator and a ground air compressor are connected through oil pipes in the well, air with different discharge capacities acts on the resonator, and a piston of the resonator is driven by the gas to move up and down to drive a vibrator to vibrate rocks at the bottom of the well with different frequencies; at the moment, a ground acceleration sensor outputs correspondingly and differently, the maximum output value of the acceleration sensor is found, the underground reservoir can be considered to be in or near a resonance state, and an air compressor control system is adjusted to enable the underground resonator to work at the frequency, so that the permeability can be effectively improved. The method is simple in operation and low in cost; the direct effect of the physical property improving effect of the reservoir is obvious; the action time can be controlled.
Description
Technical field
The invention belongs to natural gas technical field, more particularly to a kind of method directly improving Hydrocarbon Reservoir Permeability and
Device.
Background technology
Improve Oil/gas Well (including shale gas, the Unconventional forage such as coal bed gas) well yield, be oil gas both at home and abroad at present
Field and a job of scientific research institutions' study emphasis.Typically there are Physical such as pressure break, ultrasound wave de-plugging, water filling, note polyphosphazene polymer
Compound etc.；Chemical method such as acidifying etc..Its essence is all intended to improve reservoir properties, particularly reservoir permeability, sets up and effectively leads to
Road, so that oil gas can migrate out, reaches the purpose improving recovery ratio.At present, China's oil gas recovery factor reaches
More than 35%, Yuan Chao developed country average level, for ensureing China's production of energy and being made that tremendous contribution safely.
At present, petroleum gas field improves reservoir properties, mainly makes the means such as seam and acidizing treatment by pressure break and adds
To realize.Above-mentioned operation means, one is that difficulty of construction is big, and program is complicated, and construction costs is high；Two cause seam often larger
Crack, preferable to conventional reservoir effect of increasing production.For unconventional reservoir such as mud shale, coal and tight sand etc., typically only grand
See seam, can't resolve individual well stimulation problems.Therefore they are generally all very fine and close, and permeability is very low, and often below 10-4Millidarcy.
So result in reservoir oil gas because lack microcrack, micropore and can not smoothly enter in macroscopic path, thus result in
The current well yield of unconventionaloil pool is all generally relatively low.Therefore it is effectively improved unconventional reservoir physical property, be to effectively improve its harvesting
Rate is the most direct, most efficient method.
Content of the invention
It is an object of the invention to provide a kind of method and device directly improving Hydrocarbon Reservoir Permeability, the method operation
Simply, low cost；Reservoir properties improvement result direct effect is obvious；Action time is controlled.
The purpose of the present invention and solve its technical problem underlying and employ the following technical solutions to realize：One kind directly changes
The method of kind Hydrocarbon Reservoir Permeability, causes reservoir to resonate according in well by Pneumatic resonance device, increases micropore in reservoir
Gap, improves permeability, is connected resonator, ground air compressor machine by oil pipe, first with different displacements air effect humorous in well
Shake on device, under gas-powered, its piston up-down, drive oscillator, with different frequency jarring bottom rock；Now ground adds
Fast sensor can find acceleration sensor maximum output value, now it is considered that downhole in reservoir is in there being different outputs
Or close to its resonance state, adjust control system of air compressor, so that down-hole resonator is worked it is possible to effectively improve with this frequency
Permeability.
A kind of described device used by method directly improving Hydrocarbon Reservoir Permeability, tubing on shaft bottom, sleeve pipe
Interior by anchor fixing resonance device, the lower end of resonator is oscillator, and resonator is connected with ground air compressor machine by oil pipe, air compressor machine with
Regulating valve is in parallel, and air compressor machine connects computer and connects with acceleration sensor.
The present invention compared with prior art has clear advantage and beneficial effect.From above technical scheme, this
Bright have following characteristics：
1st, operation is simple, low cost；
2nd, reservoir properties improvement result direct effect is obvious；
3rd, action time is controlled.
Brief description
Fig. 1 is the structural representation of the present invention.
In figure labelling：1st, shaft bottom, 2, oscillator, 3, resonator, 4, anchor, 5, oil pipe, 6, sleeve pipe, 7, regulating valve, 8, air compressor machine,
9th, acceleration sensor, 10, air compressor machine.
Specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment, directly improve Hydrocarbon Reservoir Permeability to according to one kind proposed by the present invention
Method specific embodiment, feature and its effect, describe in detail as after.
Referring to Fig. 1, a kind of method directly improving Hydrocarbon Reservoir Permeability is it is characterised in that pass through pneumatic humorous in well
Vibrating device causes reservoir to resonate, and increases micropore in reservoir, improves permeability, specifically, is connected by oil pipe humorous in well
Shake device, ground air compressor machine, first with different displacements air effect on the resonator, under gas-powered, its piston up-down, and band
Dynamic oscillator, with different frequency jarring bottom rock；Now ground acceleration sensor can find acceleration and pass to there being different outputs
Sensor maximum output value, now it is considered that downhole in reservoir is at or approximately at its resonance state, adjusts control system of air compressor, makes
Down-hole resonator is worked it is possible to effectively improve permeability with this frequency.
A kind of described device used by method directly improving Hydrocarbon Reservoir Permeability, tubing 6 on shaft bottom 1, set
Pass through anchor 4 fixing resonance device 3, the lower end of resonator 3 is oscillator 2, resonator 3 passes through oil pipe 5 with ground air compressor machine 8 even in pipe 6
Connect, air compressor machine 8 is in parallel with regulating valve 7, air compressor machine 8 connects computer 10 and connects with acceleration sensor 9.
Operation principle of the present invention：Cause reservoir to resonate by Pneumatic resonance device 3 in well, increase micropore in reservoir,
Improve permeability, reach volume increase purpose.In well, resonator 3, ground air compressor machine 8 are connected by oil pipe 5, first with different displacements
On resonator 3, resonator is similar to pneumatic hammer to air effect, under gas-powered, its piston up-down, and drive oscillator 2, with
Different frequency jarring shaft bottom 1 rock；Now ground acceleration sensor 9 can find acceleration sensor 9 to there being different outputs
Big output valve, now it is considered that downhole in reservoir is at or approximately at its resonance state, adjusts air compressor machine 8 control system, makes down-hole
Resonator 3 is worked it is possible to effectively improve permeability with this frequency.Laboratory data proves to improve rock gas permeability nearly
The individual order of magnitude.Operation of the present invention is simple, low cost；Reservoir properties improvement result direct effect is obvious；Action time is controlled.
The above, be only presently preferred embodiments of the present invention, not inventing type is made with any pro forma restriction, appoints
What any is simply repaiied according to what the technical spirit of the present invention made to above example without departing from technical solution of the present invention content
Change, equivalent variations and modification, all still fall within the range of technical solution of the present invention.
Claims (2)
1. a kind of method directly improving Hydrocarbon Reservoir Permeability it is characterised in that：According in well pass through Pneumatic resonance device
Cause reservoir to resonate, increase micropore in reservoir, improve permeability, in well, resonator, ground pneumatics are connected by oil pipe
Machine, first with different displacements air effect on the resonator, under gas-powered, its piston up-down, drive oscillator, with difference
Frequency jarring bottom rock；Now ground acceleration sensor can find acceleration sensor maximum output to there being different outputs
Value, now it is considered that downhole in reservoir is at or approximately at its resonance state, adjusts control system of air compressor, make down-hole resonator with
This frequency works it is possible to effectively improve permeability.
2. as claimed in claim 1 a kind of device used by method directly improving Hydrocarbon Reservoir Permeability it is characterised in that：
(1) tubing (6) on shaft bottom, passes through anchor (4) fixing resonance device (3) in sleeve pipe (6), the lower end of resonator (3) is oscillator
(2), resonator (3) is connected with ground air compressor machine (8) by oil pipe (5), and air compressor machine (8) is in parallel with regulating valve (7), air compressor machine
(8) connect computer (10) to connect with acceleration sensor (9) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610899431.5A CN106437661A (en) | 2016-10-17 | 2016-10-17 | Method capable of directly improving permeability of oil gas reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610899431.5A CN106437661A (en) | 2016-10-17 | 2016-10-17 | Method capable of directly improving permeability of oil gas reservoir |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106437661A true CN106437661A (en) | 2017-02-22 |
Family
ID=58174400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610899431.5A Pending CN106437661A (en) | 2016-10-17 | 2016-10-17 | Method capable of directly improving permeability of oil gas reservoir |
Country Status (1)
| Country | Link |
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| CN (1) | CN106437661A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042787A (en) * | 2019-12-06 | 2020-04-21 | 龚大建 | Unconventional oil-gas pulse resonance synergistic method and device |
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| US4081031A (en) * | 1976-09-13 | 1978-03-28 | Kine-Tech Corporation | Oil well stimulation method |
| CN2849133Y (en) * | 2005-11-04 | 2006-12-20 | 王敬东 | Servopump pulse resonant unlocking yield increasing device |
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| CN102373908A (en) * | 2011-10-08 | 2012-03-14 | 龚大建 | Underground ultrasonic yield-increasing pumping device for coalseam gas |
| CN202370487U (en) * | 2011-10-08 | 2012-08-08 | 龚大建 | Coalbed methane downhole ultrasonic production increasing and extraction device |
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| CN104536037A (en) * | 2015-01-19 | 2015-04-22 | 安徽理工大学 | Automatic mine micro-seismic source |
| CN105464635A (en) * | 2015-12-01 | 2016-04-06 | 铜仁中能天然气有限公司 | Shale gas well production increase device with inherent frequency measuring unit |
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2016
- 2016-10-17 CN CN201610899431.5A patent/CN106437661A/en active Pending
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| US4081031A (en) * | 1976-09-13 | 1978-03-28 | Kine-Tech Corporation | Oil well stimulation method |
| CN2849133Y (en) * | 2005-11-04 | 2006-12-20 | 王敬东 | Servopump pulse resonant unlocking yield increasing device |
| CN102155253A (en) * | 2011-01-26 | 2011-08-17 | 吕晓琳 | Ground pumping and mining coal seam gas well reformation method based on recurrence frequency impact waves |
| CN102373908A (en) * | 2011-10-08 | 2012-03-14 | 龚大建 | Underground ultrasonic yield-increasing pumping device for coalseam gas |
| CN202370487U (en) * | 2011-10-08 | 2012-08-08 | 龚大建 | Coalbed methane downhole ultrasonic production increasing and extraction device |
| CN102661139A (en) * | 2012-05-09 | 2012-09-12 | 西南石油大学 | Oil and gas field production increasing method and device for breaking rock based on sound wave focusing resonance technology |
| CN203175444U (en) * | 2013-04-23 | 2013-09-04 | 辽宁东戴河新区瑞实石油科技有限公司 | Resonator used for underground steam heating of oil layer in oil well |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042787A (en) * | 2019-12-06 | 2020-04-21 | 龚大建 | Unconventional oil-gas pulse resonance synergistic method and device |
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Application publication date: 20170222 |