CN105319329B - WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS is damaged and electrical heating solution eliminating water locked mode intends apparatus and method - Google Patents
WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS is damaged and electrical heating solution eliminating water locked mode intends apparatus and method Download PDFInfo
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- CN105319329B CN105319329B CN201510889015.2A CN201510889015A CN105319329B CN 105319329 B CN105319329 B CN 105319329B CN 201510889015 A CN201510889015 A CN 201510889015A CN 105319329 B CN105319329 B CN 105319329B
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Abstract
The invention discloses WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS infringement and electrical heating solution eliminating water locked mode intend apparatus and method, the device is mainly made up of rock core, gas cylinder, Resistance probe, pressure transducer, temperature sensor, blood circulation, condensing tube, data collecting system, gas mass flow gauge, electrically heated rod, rock core outer layer has shell, there is end cap top and the bottom, shell has air inlet, there is well in rock core central authorities, 5～10 drillings for going deep into rock core are distributed centered on well, place Resistance probe, probe connection temperature and pressure sensor；There are blood circulation and electrically heated rod in well, blood circulation is made up of pump and simulation oil pipe, and pump connection well, simulation oil pipe connect condensing tube and gaseous mass effusion meter.The method monitor in real time record temperature, pressure, resistance and gas flow change, simulation Water-blocking damage and electrical heating solution eliminating water lock overall process.Water lock problem in energy effectively solving stratum of the invention, recovers and improves nearly well area ground environment.
Description
Technical field
The present invention relates to WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS infringement and electrical heating solution eliminating water locked mode intend device in oil-gas mining field
With method, reservoir recovery ratio can be effectively improved and improve reservoir environment.
Background technology
During drilling well, completion, well workover and mining operations, can all occur in many cases external in porous media
The phenomenon of middle delay.In another not miscible mutually infiltration reservoir or porous media, original not miscible phase saturation increases
Greatly, relative permeability can be all damaged, reservoir permeability and oil gas is substantially reduced with respect to permeability.It is not miscible mutually be water phase
When, this phenomenon is referred to as water-blocking effect.Show that Water-blocking damage has a strong impact on gas reservoir development effect according to research both at home and abroad, and
One of major determinant type of low permeability sand reservoirs is become.Water-blocking damage can cause various serious consequences, such as hinder gas-bearing formation
Find in time and accurate evaluation, increase operating cost, reduce gas recovery factor and slow down development process, payback period extend
Deng.Therefore, find a kind of method of effective solution eliminating water lock extremely urgent.
The release method of Water-blocking damage has following several：Method (Liu of Water-blocking damage is released using addition water lock de-plugging agent
State's continuous heavy rain etc. low permeability reservoir water blocking damage releases technology desk research. natural gas and oil, 04 phase in 2012；Zheng Jun etc. surface
Activating agent is studied to gas bearing coalbed detrimental effect. oilfield chemistry, 03 phase in 2005), the side of Water-blocking damage is released with Splitting Method
Method (woods glory etc. low permeability gas reservoirs water blocking damage and release method research. Petroleum finance, 06 phase in 2003), inject CO2
Gas releases the method for Water-blocking damage and (.CO such as offers in model emblem2Handle up and release retrograde condensation and water lock Pollution Study. engineering construction, 2012
02 phase of year).But addition water lock de-plugging agent can not recover reservoir permeability completely and may cause secondary to gas-bearing reservoir
Infringement；Splitting Method releases the crack of the method generation of Water-blocking damage and easily closes, and fracturing fluid also can be by dialysis mode edge
The bedrock surface invaded formation of crack both sides, increases water phase saturation, blocks the pore channel on bedrock surface, what generation was reversely sucked
Water-blocking effect, so as to reduce fracturing effect, this phenomenon is particularly evident to low permeability reservoir；Injection CO2Gas releases Water-blocking damage
Method due to CO2Use limited by resource, and have certain corrosivity, implement to be obstructed in the case of without source of the gas.
The method that the present invention releases Water-blocking damage by electrical heating, can more preferably recover core permeability, will not produce the water reversely sucked
Lock, is not limited by source of the gas, will not corrode and damage reservoir.
Chinese patent CN102536165A discloses a kind of by microwave generating apparatus generation microwave, to hyposmosis densification sand
The method heated by aqueous water in rock stratum, but microwave penetration ability forces to obtain heat penetration depth, and power demand is big, in down-hole
Small space in, it is difficult under enter HIGH-POWERED MICROWAVES generating meanss, with larger limitation.The present invention utilizes high temperature solution eliminating water
Lock only needs to down electrically heated rod, and demand power reguirements can be received by construction at present, while device restrictive condition is less,
Experiment can be carried out indoors, more fast, facilitated.
The content of the invention
It is an object of the invention to provide WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS infringement and electrical heating solution eliminating water locked mode intend device, the dress
Put the overall process that can simulate Water-blocking damage and electrical heating solution eliminating water lock, monitor in real time record Water-blocking damage process and electrical heating solution
During eliminating water lock, temperature, pressure, resistance and the gas flow change isolated, realize Water-blocking damage and electrical heating solution to determine
Eliminating water is locked.
Another object of the present invention is also resided in offer and WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS is damaged using the device and electrical heating
The method simulated by solution eliminating water lock, the method principle reliability, easy to operate, low cost in actual applications can effectively solving
Stratum water lock problem, recovers and improves nearly well area ground environment.
To reach above technical purpose, the present invention provides technical scheme below.
The present invention locks course of damage by analog simulation water, proposes the method for electrical heating solution eliminating water lock and by simulation
The process of unit simulation electrical heating solution eliminating water lock, it is whole by parameter and gas such as data collecting system measurement temperature, pressure, resistance
The process of the situation of change of body flow, whole simulation water lock course of damage and electrical heating solution eliminating water lock is more directly perceived, clear, in fact
Test result and data are authentic and valid.
Experimental provision involved in the present invention is mainly made up of two parts, can realize water lock simulation process and electrical heating solution
Eliminating water locks the function of simulation process.
WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS damage and electrical heating solution eliminating water locked mode intend device, mainly by rock core, gas cylinder, air relief valve,
Resistance probe, pressure transducer, temperature sensor, blood circulation, condensing tube, data collecting system, gas mass flow gauge, electricity
Heating rod is constituted.
The rock core outer layer has shell, and there is end cap top and the bottom, is sealing state, and core-shell has air inlet, and this enters
QI KOU connects air relief valve and gas cylinder；There is well in rock core central authorities, and the well is that, in rock core top end cap central bore, hole depth runs through
Whole rock core, but lower end cap is not drilled, on rock core top, end cap is distributed 5～10 brills for going deep into rock core centered on well
Hole, between each drilling, line is in swirl shape successively, drilling placement Resistance probe, connects temperature sensor and pressure on probe
Sensor；There are blood circulation and electrically heated rod, the electrically heated rod, Resistance probe, temperature sensor and pressure sensing in well
Device is all connected with data collecting system；The blood circulation is made up of pump and simulation oil pipe, pump connection well, the mould in well
Intend oil pipe connection condensing tube, condensing tube connection gas mass flow gauge.
Sealing rock core is for the environment for simulating reservoir sealing；Make a call between 5～10 drillings for going deep into rock core and hole according to
Secondary line is in swirl shape, is in order that being put into 5～10 Resistance probes therein and temperature sensor, pressure transducer uniformly divide
Be distributed in rock core, as sensing point, make to detect resistance, temperature, pressure parameter data it is more reasonable；Pump in blood circulation
Simulation drilling fluid is pumped in well course of damage is locked with simulation water, and by gas in well during electrical heating solution eliminating water lock
Body is gone out by simulating oil-line pump；Condensing tube is in order to condense the high-temperature gas drilling fluid in the gas for pumping out, to ensure gas matter
The accuracy of the gas flow that amount flow measurement is obtained.
WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS is damaged using said apparatus and electrical heating solution eliminating water locks the method simulated, successively
Comprise the following steps：
(1) the air inlet gas injection toward core-shell is continued by gas cylinder, simulates gas generation process, by gas mass flow gauge
After observing that gas flow is stable, the now temperature of rock core, pressure, resistance data are recorded by data collecting system, as temperature
Degree, pressure, the initial value of resistance, record now gas flow by gas mass flow gauge, as the initial value of air flow rate；
(2) simulation drilling fluid is pumped into in well, simulate drilling fluid and constantly invade in rock core and hole, cause water lock to damage
Evil, makes rock core and the water saturation of hole constantly increase, and permeability constantly reduces, when gas flow reduces until tending towards stability
When, Water-blocking damage reaches maximum, records the now temperature of rock core, pressure, resistance data by data collecting system, by gas
Mass flowmenter records now gas flow；
(3) surplus drilling fluid in well is pumped out by blood circulation, entering down electrically heated rod in the wellbore carries out adding to rock core
Heat, the temperature range of heating is 300～600 DEG C, and high-temperature heating makes the simulation drilling fluid that near-wellbore region is invaded evaporate and flow into
Well, then the gas in well and high-temperature gas simulation drilling fluid are gone out through simulation oil-line pump by well by blood circulation, enter
Enter condensing tube, condensing tube condensation simulation drilling fluid, remaining gas enter gas mass flow gauge.Constantly carry out with heating, rock core
And hole water saturation is gradually reduced, permeability is constantly recovered, and records the now temperature of rock core, pressure by data collecting system
Power, resistance data, record now gas flow, when temperature reaches 600 DEG C, rock core pressure, electricity by gas mass flow gauge
Close to its initial value, resistance and gas flow data illustrate that Water-blocking damage is released (if rock core pressure and gas flow data are more than
Its initial value, illustrates that electrical heating solution eliminating water locked mode is intended method and produces some microcracks, improves the percolation ability on stratum)；
(4) gas cylinder is closed, electrically heated rod is heated and taken out in stopping, and whole simulation process terminates.
The present invention passes through data collecting system and gas mass flow gauge records temperature, pressure, resistance and gas flow
Data variation, by before and after data contrast can be clear and intuitive observe Water-blocking damage simulation process and electrical heating solution eliminating water locked mode
Whether plan process is successful.Eliminating water lock is successfully solved by above analog, it is known that electrical heating is used in the small space of down-hole
It is practicable that the mode of rod heating is locked reservoir and heated so as to the mode for solving eliminating water lock near wellbore zone water.As water is locked
Region is generally present in the range of 0～3 meter of near wellbore zone, therefore electrically heated rod only needs to the ground layer for heating to 0～3 meter of nearly well.
So, the high power heater of current prior art can either be used using Electric heating solution eliminating water lock, be disclosure satisfy that again
The heating rod of the borehole size of requirement of engineering, the contradictory problems that power is big needed for solving and equipment size is little.
Compared with prior art, the invention has the beneficial effects as follows：
(1) water saturation of Water-blocking damage band around hyposmosis Methed of Tight Sandstone Gas Layers pit shaft, quickly can be effectively reduced,
Recover and improve nearly well area stratum gas phase permeability, realize that Water-blocking damage gas well capacity occurs to be improved, and two will not be produced
Secondary infringement；
(2), during electrical heating the expansion of rock, the volumetric expansion of water and vaporization and to pit shaft surrounding rock heat
The inequality of distribution can make surrounding rock distribution of force uneven, so as to help to create some microcracks, improve the seepage flow on stratum
Ability, above-mentioned gap can be so fine and close in hyposmosis without the need for being gone by other means as steam and the discharge-channel of aqueous water
Sand layers make seam, so as to can reduces cost, can also reduce the infringement to hyposmosis tight sand Rotating fields；
(3), the present invention cannot be only used for barefoot completion and could be applicable to well-case perforating completion, sieve tube completion, liner completion
Etc. the completion mode of various employing metals isolation；
(4), the present invention directly proposes that a whole set of WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS is damaged and electrical heating solution eliminating water locked mode intends method
With device, energy is quick, clear observation water locks course of damage and electrical heating solution eliminating water locks the experimental result of process, is easy to draw experiment
Data；
(5), analog simple structure of the present invention, principle reliability, easy to operate, cost are low, and demand is powered and wanted
Ask and can be received by construction at present, therefore can extensively manufacture enforcement of going forward side by side and use.
Description of the drawings
Fig. 1 is the overall construction drawing that WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS infringement and electrical heating solution eliminating water locked mode intend device.
Fig. 2 is the distribution of boreholes top view goed deep in rock core.
In figure：1. end cap；2. shell；3. rock core；4. well；5. gas cylinder；6. air relief valve；7. Resistance probe；8. pressure is passed
Sensor；9. temperature sensor；10. pump；11. condensing tubes；12. gas mass flow gauge；13. data collecting systems；14. electrical heating
Rod；15. simulation oil pipes.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Referring to Fig. 1, Fig. 2.
WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS is damaged and electrical heating solution eliminating water locked mode intends device, mainly by rock core 3, gas cylinder 5, air relief valve
6th, Resistance probe 7, pressure transducer 8, temperature sensor 9, blood circulation, condensing tube 11, gas mass flow gauge 12, data are adopted
Collecting system 13, electrically heated rod 14 are constituted.
3 outer layer of the rock core has shell 2, and there is end cap 1 top and the bottom, are sealing state, and core-shell has air inlet, should
Air inlet connects air relief valve 6 and gas cylinder 5；There is well 4 in rock core central authorities, and the well 4 is in rock core top end cap central bore, hole
It is deep to run through whole rock core, but do not drill lower end cap；5～10 are distributed in rock core top end cap centered on well 4 and go deep into rock
The drilling of the heart, between each drilling, line is in swirl shape (Fig. 2) successively, and drilling placement Resistance probe 7, the probe connect pressure
Sensor 8 and temperature sensor 9；Have blood circulation and electrically heated rod 14 in well 4, the electrically heated rod 14, Resistance probe 7,
Pressure transducer 8 and temperature sensor 9 are all connected with data collecting system 13；The blood circulation is by pump 10 and 15 groups of oil pipe of simulation
Into, the connection well 4 of pump 10, the connection condensing tube 11 of simulation oil pipe 15 in well 4, condensing tube connection gas mass flow gauge
12。
Simulation gas generation process：Air inlet gas injection toward shell 2 is continued by gas cylinder 5, is seen by gas mass flow gauge 12
After measuring gas flow stably, the now temperature of rock core 3, pressure, resistance data are recorded by data collecting system 13, as temperature
Degree, pressure, the initial value of resistance, record now gas flow by gas mass flow gauge 12, used as the initial value of air flow rate.
After the completion of simulation gas generation process, simulation water lock course of damage：Simulation drilling well is pumped into by blood circulation in well 4
Liquid.Gas flow change is observed by gas mass flow gauge 12, after gas flow is stable, is recorded with data collecting system 13
Now the temperature of rock core 3, pressure, resistance data situation, record now gas flow by gas mass flow gauge 12.
After simulation drilling fluid is pumped in well 4, simulation drilling fluid constantly can be invaded in rock core 3 and hole, cause water lock to damage
Evil, this process are Water-blocking damage simulation process.Its water saturation is made constantly to increase as simulation drilling fluid constantly invades rock core 3
Greatly, rock core 3 and pore permeability constantly reduce, then the gas flow for passing through constantly reduces, and are considered as aerogenesis during Water-blocking damage
Amount is gradually decreased, while simulating drilling fluid can increase resistance.Therefore can monitor in data collecting system 13, each sensing point
The pressure for measuring constantly will reduce, and resistance constantly will increase, and temperature keeps constant；Gas is monitored in gas mass flow gauge 12
Flow constantly reduces.When gas flow reduces until when tending towards stability, illustrating that Water-blocking damage reaches maximum, Water-blocking damage has been simulated
Into.Now pressure, the value of gas flow are respectively less than initial value, and resistance value is more than initial value.
After the completion of Water-blocking damage simulation, simulation solution eliminating water lock process：Remaining drilling well in well 4 is isolated by blood circulation
Liquid, toward well 4 under enter electrically heated rod 14, open electrically heated rod 14 and heated, by data collecting system 13 regulate and control electricity plus
14 temperature of hot pin.By gas flow change being observed in gas mass flow gauge 12, after gas flow is stable, use data acquisition
System 13 records the now temperature of rock core 3, pressure, resistance data situation, by recording this seasonal epidemic pathogens in gas mass flow gauge 12
Body flow.
When entering electrically heated rod 14 down in the wellbore rock core 3 being heated, the temperature range of heating is 300～600 DEG C, profit
The simulation drilling fluid invaded with nearly 4 region of well of high-temperature heating, is allowed to evaporate and flow into well 4 and is isolated by blood circulation again
Well 4, after condensing tube 11 removes gaseous state simulation drilling fluid, is transferred to gas mass flow gauge 12, gas flow is carried out
Monitoring.As the simulation drilling fluid for invading rock core 3 constantly evaporates, then rock core 3 and hole water saturation constantly reduce, permeability
Constantly recover, the gas flow for passing through is continuously increased, during being considered as releasing Water-blocking damage, gas production is gradually recovered.Adopt in data
Monitor in collecting system 13, pressure that each sensing point is measured, temperature is continuously increased, resistance is constantly reduced；In gas mass flow
Monitor that gas flow is continuously increased in gauge 12.After gas flow gradually tends towards stability, now pressure, resistance and gas stream
Close to its initial value, amount data illustrate that rock core 3 has released Water-blocking damage, substantially return to not by the state before water enchroachment (invasion), and electricity adds
Pyrolysis eliminating water locked mode is intended completing.If now 3 gas flow data of rock core is more than its initial value, electrical heating solution eliminating water locked mode plan side is illustrated
Method produces some microcracks, improves the percolation ability on stratum.
Claims (2)
1. WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS infringement and electrical heating solution eliminating water locked mode intend device, mainly by rock core (3), gas cylinder (5), decompression
Valve (6), Resistance probe (7), pressure transducer (8), temperature sensor (9), blood circulation, condensing tube (11), gas mass flow
Gauge (12), data collecting system (13), electrically heated rod (14) composition, it is characterised in that rock core (3) outer layer has shell
(2), there is end cap (1) top and the bottom, are sealing state, and core-shell has air inlet, and air inlet connection air relief valve (6) is gentle
Bottle (5)；There is well (4) in rock core central authorities, and the well (4) is that, in rock core top end cap central bore, hole depth runs through whole rock core,
But do not drill lower end cap；5～10 drillings for going deep into rock core are distributed centered on well (4) in rock core top end cap, each
Between drilling, line is in swirl shape successively, and drilling placement Resistance probe (7), the probe connect pressure transducer (8) and temperature
Sensor (9)；Well (4) is inner blood circulation and electrically heated rod (14), the electrically heated rod (14), Resistance probe (7), pressure
Sensor (8) and temperature sensor (9) are all connected with data collecting system (13)；The blood circulation is by pump (10) and simulation oil pipe
(15) constitute, pump (10) connection well (4), the simulation oil pipe (15) connection condensing tube (11) in well (4), condensing tube connect
Connect gas mass flow gauge (12).
2. WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS is damaged using the device described in claim 1 and electrical heating solution eliminating water locks what is simulated
Method, is comprised the following steps successively：
(1) the air inlet gas injection toward core-shell is continued by gas cylinder, simulates gas generation process, observed by gas mass flow gauge
After stablizing to gas flow, the now temperature of rock core, pressure, resistance data are recorded by data collecting system, as temperature, pressure
The initial value of power, resistance, records now gas flow by gas mass flow gauge, as the initial value of air flow rate；
(2) simulation drilling fluid is pumped into in well, simulate drilling fluid and constantly invade in rock core and hole, cause Water-blocking damage, make
The water saturation of rock core and hole constantly increases, and permeability constantly reduces, when gas flow reduces when tending towards stability, water
Lock infringement reaches maximum, records the now temperature of rock core, pressure, resistance data by data collecting system, by gaseous mass
Cmf record now gas flow；
(3) surplus drilling fluid in well is pumped out by blood circulation, enters electrically heated rod down in the wellbore and rock core is heated, plus
The temperature range of heat is 300～600 DEG C, and high-temperature heating makes the simulation drilling fluid that near-wellbore region is invaded evaporate and flow into well,
The gas in well and high-temperature gas are simulated by drilling fluid by blood circulation again and goes out well through simulation oil-line pump, into condensation
Pipe, condensing tube condensation simulation drilling fluid, remaining gas enter gas mass flow gauge, constantly carry out with heating, rock core and hole
Water saturation is gradually reduced, and permeability is constantly recovered, and records the now temperature of rock core, pressure, electricity by data collecting system
Resistance data, record now gas flow, when temperature reaches 600 DEG C, rock core pressure, resistance and gas by gas mass flow gauge
Body data on flows is released close to its initial value, Water-blocking damage；
(4) gas cylinder is closed, electrically heated rod is heated and taken out in stopping, and whole simulation process terminates.
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| CN201510889015.2A CN105319329B (en) | 2015-12-06 | 2015-12-06 | WATER LOCKING DAMAGE OF TIGHT SAND GAS RESERVOIRS is damaged and electrical heating solution eliminating water locked mode intends apparatus and method |
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| CN105807001B (en) * | 2016-03-29 | 2017-09-05 | 中国石油大学(华东) | A kind of evaluation method of oil reservoir water blocking damage |
| CN105756674B (en) * | 2016-04-12 | 2023-02-21 | 西南石油大学 | Fracture-matrix coupling flow damage evaluation device and method for simulating formation conditions |
| CN108240953B (en) * | 2016-12-27 | 2020-09-04 | 中国石油天然气股份有限公司 | Device and method for evaluating performance of barite blocking remover |
| CN106867620B (en) * | 2017-04-12 | 2023-03-24 | 太原科技大学 | Microwave desulfurization intelligent integrated experimental system for high-sulfur coal |
| CN111006988B (en) * | 2019-12-31 | 2020-09-01 | 西南石油大学 | Carbon dioxide imbibition diffusion oil extraction experimental device in tight oil reservoir |
| CN113236211B (en) * | 2021-06-01 | 2022-04-05 | 西南石油大学 | Device and method for removing water phase trapping damage through underground eddy heat shock of tight reservoir |
| CN116297110B (en) * | 2023-05-18 | 2023-07-25 | 西南石油大学 | Carbon dioxide sealing simulation system and application method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3554288A (en) * | 1968-09-24 | 1971-01-12 | Marathon Oil Co | Stimulating low pressure natural gas producing wells |
| US5400430A (en) * | 1990-10-01 | 1995-03-21 | Nenniger; John E. | Method for injection well stimulation |
| CN102536222A (en) * | 2012-01-09 | 2012-07-04 | 中国石油天然气集团公司 | Analog evaluation device for evaluating damage of coalbed methane reservoir polluted by external fluid |
| CN103790552A (en) * | 2014-01-22 | 2014-05-14 | 西南石油大学 | Method for relieving water blocking at high temperature in oil and gas exploitation process |
| CN104453806A (en) * | 2014-10-30 | 2015-03-25 | 中国石油化工股份有限公司 | Method for removing sandstone condensate gas reservoir water lock through nitrogen injection |
| CN205210047U (en) * | 2015-12-06 | 2016-05-04 | 西南石油大学 | Dewatering lock analogue means is separated in harm of tight sand gas reservoir water lock and electrical heating |
-
2015
- 2015-12-06 CN CN201510889015.2A patent/CN105319329B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3554288A (en) * | 1968-09-24 | 1971-01-12 | Marathon Oil Co | Stimulating low pressure natural gas producing wells |
| US5400430A (en) * | 1990-10-01 | 1995-03-21 | Nenniger; John E. | Method for injection well stimulation |
| CN102536222A (en) * | 2012-01-09 | 2012-07-04 | 中国石油天然气集团公司 | Analog evaluation device for evaluating damage of coalbed methane reservoir polluted by external fluid |
| CN103790552A (en) * | 2014-01-22 | 2014-05-14 | 西南石油大学 | Method for relieving water blocking at high temperature in oil and gas exploitation process |
| CN104453806A (en) * | 2014-10-30 | 2015-03-25 | 中国石油化工股份有限公司 | Method for removing sandstone condensate gas reservoir water lock through nitrogen injection |
| CN205210047U (en) * | 2015-12-06 | 2016-05-04 | 西南石油大学 | Dewatering lock analogue means is separated in harm of tight sand gas reservoir water lock and electrical heating |
Non-Patent Citations (3)
| Title |
|---|
| "低渗透储层水锁损害研究新进展";任冠龙等;《中外能源》;20131215(第12期);第55-61页 * |
| "致密砂岩气藏损害特征及评价技术";赵峰等;《钻采工艺》;20110925;第34卷(第5期);第47-51页 * |
| "致密砂岩气藏水锁损害评价实验研究";王良等;《重庆科技学院学报（自然科学版）》;20150815;第17卷(第4期);第14页2.2欠平衡水锁评价方法，图2 * |
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