CN101100292A - Composite film separation nitrogen-preparing system and method for well drilling technique - Google Patents
Composite film separation nitrogen-preparing system and method for well drilling technique Download PDFInfo
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- CN101100292A CN101100292A CNA2007100493441A CN200710049344A CN101100292A CN 101100292 A CN101100292 A CN 101100292A CN A2007100493441 A CNA2007100493441 A CN A2007100493441A CN 200710049344 A CN200710049344 A CN 200710049344A CN 101100292 A CN101100292 A CN 101100292A
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Abstract
This invention relates to membrane separation type nitrogen production system used for gas drilling in oil field or natural gas field. It is composed of air pretreatment, membrane separation type nitrogen production and automatic control for drilling process, all of them are placed on a tank like sledge. The air pretreatment system comprises a air cooling unit, a set of filtering apparatus and a heating device successively. Said membrane separation system comprises composed membrane tube assemblies. Said automatic control system comprises programmable automatic control system, containing software of gas drilling process. It controls the main parameters of inlet of separation system of: temperature is not higher than 65 deg.C, pressure is lower than 2.41 MPa, and the oxygen content in outlet is 0.01-5%, with nitrogen production rate of 1800-5400 m3/h. This invention has advantages of: water-tolerant, high temperature resistance, high pressure resistance, anti-contamination, safety, high efficiency, energy-saving, long service lift, and environmental-protection.
Description
Technical field:
The present invention relates to a kind of nitrogen gas generating system and method for preparing nitrogen, relate in particular to a kind of composite membrane that is used for drilling technology of field work that is applicable to and separate nitrogen gas generating system and film separation and nitrogen-making method, belong to industrial machinery and make the field.
Background technology:
Nitrogen is a kind of rare gas element, and can be widely used in various is the industrial equipments operational process of main purpose with the oxygen barrier, owing to contain 80 percent the nitrogen of having an appointment in the air, so nitrogen is convenient to be gathered, various nitrogen manufacturing systems also occurred thereupon.
At present, nitrogen also is widely used in exploitation, completion and the well workover of oil gas well already, but the application in oil drilling is in the junior stage.Fact proved that it is very good that nitrogen is used for the oil drilling effect, mainly is owing to lack the equipment of making nitrogen that is fit to field work and adapts to severe environment.The existing drilling well equipment of making nitrogen generally is carbonaceous molecular sieve making nitrogen by pressure swing adsorption device, this device comprises air-cooler, air filter group, nitrogen separation system, wherein the nitrogen separation system is raw material with pressurized air, with the carbonaceous molecular sieve is sorbent material, adopt transformation adsorption process (being called for short P.S.A), under normal temperature low pressure, utilize airborne oxygen different with the rate of diffusion of nitrogen in carbonaceous molecular sieve, oxygen is separated with nitrogen, thereby obtained nitrogen.The shortcoming of this device is: comprise purifying (deoxygenation) process in process of production, this process need adds hydrogen and provides suitable temperature with steam, reach the purpose of oxyhydrogen reaction with deoxygenation, so the equipment that needs is more, overall volume is big, install and move all inconveniences, and be subjected to the influence of extraneous factor bigger, the purity of nitrogen is wayward.
The also useful homogeneous membrane equipment of making nitrogen in addition, this equipment comprises air-cooler equally, the air filter group, the nitrogen separation system, but the nitrogen separation system utilizes the difference of each component velocity of flow in the film pipe in the air and nitrogen separation is come out, it is less that this mode is influenced by extraneous factor, nitrogen gas purity is higher, it is a kind of reasonable nitrogen-making device, but the homogeneous membrane equipment of making nitrogen in the market has following defective: whole device does not form an effective solidifying product, but adopt field-installed mode to finish, so volume is bigger, move inconvenience, and quality control acquires a certain degree of difficulty; The resistance to elevated temperatures of homogeneous membrane is relatively poor in addition, and air themperature is very high sometimes during field work, temperature still very high (or because of power failure water cooler do not work) behind supercooler, can cause certain infringement (this moment is if stop the supple of gas or steam accidents such as then may causing bit freezing) to homogeneous membrane film pipe, thereby shorten the life-span of equipment, so this equipment not too adapts to bad working environment.
Summary of the invention:
Purpose of the present invention provides a kind of composite membrane that is used for drilling technology of field work that is applicable to separate nitrogen gas generating system and film separation and nitrogen-making method with regard to being to address the above problem.
The present invention realizes above-mentioned purpose in the following manner:
The composite membrane that is used for drilling technology among the present invention separates nitrogen gas generating system and comprises air pretreatment system, nitrogen film separating system and nitrogen injection drilling technology automatic control system, under the control of nitrogen injection drilling technology automatic control system, pressurized air is through air pretreatment system, the output of nitrogen film separating system, and all devices all places in the box prying body; Described air pretreatment system is formed by connecting by tracheae successively by compressed air inlet pipe, air-cooler, air filter group and airheater; Described nitrogen film separating system is made up of compound film tube assembly and nitrogen export pipeline system; Described nitrogen injection drilling technology automatic control system is carried out electric system by programmable automatic control system and technology controlling and process and is formed.
All devices all is fixedly installed in the box prying body, effective reduced volume not only, and connect between each parts firm, stably operating device performance and nitrogen gas purity; The air pretreatment system can be clean with the dust in the pressurized air, contaminant removal, and air is reached be adapted to the optimal separation temperature of composite membrane, to improve the output and the purity of nitrogen; Compound film tube assembly in the nitrogen film separating system has advantages such as operating temperature range is big, water tolerance is strong, oil-proofness is strong, resistance to crocking is strong, can safeguard, these advantages are that the homogeneous membrane pipe module on the present market is not available; Programmable automatic control system is the PLC controller, is a kind of general automatic control system, can control automatically by the preset value of design variablees such as the temperature in the nitrogen film separating system, pressure, nitrogen gas purities.
Show that through test compound film tube soaks after 24 hours still excellent in 100 ℃ water, shown in the performance comparison of composite membrane and homogeneous membrane sees the following form:
As can be seen from the above table, more stable, more reliable with the composite membrane nitrogen gas generating system than using the homogeneous membrane nitrogen gas generating system, and also adaptive faculty is also much better than, and the life-span also can be much longer.
In practical work process, the compressed air inlet pipe of the film separation and nitrogen-making system of pressurized air from the present invention enters, undertaken entering the air filter group after the cooled dehydrated by air-cooler (generally adopting air cooling way) then, the air filter group can be with the dust in the pressurized air, contaminant removal is clean, this helps protecting compound film tube, clean pressurized air is sent to the nitrogen film separating system after being heated to certain temperature (being the best with 50 degrees centigrade generally) through airheater, the nitrogen film separating system is made of compound film tube assembly and nitrogen export pipeline system, the compound film tube assembly is a hollow composite membrane bundle cylindraceous, every bundle has comprised up to a million tubular fibres, so that separating area to greatest extent to be provided, about tens microns of every Fibre diameter, hairline as the people is thin, pressurized air is entered by an end of fibrous bundle, gas molecule under pressure, at first in the contact of the high-tension side of composite membrane, be absorption then, dissolving, diffusion, precipitation, overflow, the infiltration rate difference of every kind of gas, oxygen, carbonic acid gas, the infiltration rate of water vapour etc. is fast, ooze out to the low pressure outside by the inboard fibre wall of high pressure, be discharged in the outside air by the opening of compound film tube assembly one side; " gas " that infiltration rate is little---nitrogen is enriched in the high pressure inboard, is expelled to the nitrogen storage gas tank by the other end of compound film tube assembly, thereby has realized that oxygen-nitrogen separates, and obtains nitrogen.
As the optimum structure of the film separation and nitrogen-making system among the present invention, described air filter group is: coarse filtration air filter, middle air filtering strainer, fine filtering air filter and ultra-fine air filtering strainer serial in order link to each other.This level Four strainer can thoroughly be removed dust and the impurity in the pressurized air, and the difficult obstruction of strainer, can reduce wash number.
In described box prying body, be equipped with airheater is carried out temperature controlled temperature regulator.The same with temperature control mode commonly used, the induction end of temperature regulator is installed on the gas outlet end of airheater, the control end of temperature regulator is connected with the relay1 switch of airheater, when the air themperature of the gas outlet end of airheater is lower than design temperature, airheater work; When the air themperature of the gas outlet end of airheater was higher than design temperature, airheater quit work.The air themperature of the gas outlet end of airheater just can keep more stable like this, helps nitrogen separation.
In described box prying body the air pressure safety governor is installed, the pressure detector of air pressure safety governor is installed on the tracheae between air filter group and the airheater, and the control end of air pressure safety governor is connected with airheater.There is not air admission when system's running; or air admission is arranged but pressure during less than a certain set(ting)value; airheater can cut out under the effect of air pressure safety governor automatically, thereby protective membrane group and airheater make that the film pipe is stable, trouble-free service and being without prejudice.
Between described compressed air inlet pipe and nitrogen escape pipe, straight-through tracheae is installed, on straight-through tracheae, manually-operated gate is installed.Straight-through tracheae uses pressurized air easily when being convenient to need in the well site.
On defective nitrogen exhaust pipe, pressure release valve is installed.Behind the system-down, still have high pressure gas in pipeline and the pocket, do not meet the well site safety standard, remove the resettlement operation, can use pressure release valve to be released by the pressure of internal system for the ease of implementing peripheral conduits safely.
Between described nitrogen film separating system and nitrogen storage gas tank, the nitrogen gas purity Controlling System is installed.The ultimate principle of nitrogen gas purity Controlling System is by product gas sample detecting branch road, show oxygen content gas (promptly feeding back purity of product gas) at that time by oxygen inspection battery online detected gas at random oxygen level and by oxygen analyzer, make the film group obtain rational pressure difference and the purity of adjustments of gas by regulating the control of purity valve.
Port at described compressed air inlet pipe and nitrogen escape pipe all is equipped with by benevolence rapid-acting coupling, and benevolence rapid-acting coupling is connected with box prying body by bracing means.Powerful impulsive contact force when this structure can cushion site work prevents to damage joint and pipe welding seam.
Film separation and nitrogen-making method among the present invention, with programmable automatic control system each variable in the nitrogen separation system is controlled, its controlled variable is: the gas temperature of the air inlet end of described nitrogen film separating system≤65 ℃, the gaseous tension＜2.41Mpa of the air inlet end of described nitrogen film separating system; The control method of programmable automatic control system is: during the gas temperature of the air inlet end of described nitrogen film separating system＞65 ℃, programmable automatic control system can cut off the power supply of airheater automatically, during the gaseous tension of the air inlet end of described nitrogen film separating system 〉=2.41Mpa, programmable automatic control system can be opened the pressure release valve decompression, the gas oxygen content of the outlet side of described nitrogen film separating system is that 0.01-5% is controlled to be by the nitrogen gas purity Controlling System, its principle is: by product gas sample detecting branch road, show oxygen content gas at that time by oxygen inspection battery online detected gas at random oxygen level and by oxygen analyzer, by programmable automatic control system the control of purity valve is regulated, make the film group obtain rational pressure difference and the oxygen level of adjustments of gas, the product nitrogen amount of the outlet side of described nitrogen film separating system is 1800m
3/ h-5400m
3/ h; Regulating defective nitrogen blow-off valve by programmable automatic control system controls.
Beneficial effect of the present invention is:
As from the foregoing, advantages such as the new membrane that is used for drilling technology among the present invention separates nitrogen gas generating system and have high temperature high voltage resistant, anti-soil, safety, can safeguard, efficient, energy-conservation, long-lived, environmental protection can adapt to the open-air round-the-clock oil in any area, natural gas drilling well variable duty.
Description of drawings:
Fig. 1 is that the drilling well among the present invention is removed plan structure synoptic diagram after the cover top portion with the nitrogen manufacturing system;
Fig. 2 is the nitrogen manufacturing flow chart among the present invention.
Embodiment:
Below in conjunction with accompanying drawing the present invention is described further:
As shown in Figure 1, the new membrane that is used for drilling technology among the present invention is separated nitrogen gas generating system and is comprised air pretreatment system, nitrogen film separating system and nitrogen injection drilling technology automatic control system, under the control of nitrogen injection drilling technology automatic control system, pressurized air is through air pretreatment system, the output of nitrogen film separating system, and all devices all places in the box prying body 3; Described air pretreatment system is formed by connecting by tracheae successively by compressed air inlet pipe 7, air-cooler 8, air filter group 11 and airheater 5; Described nitrogen film separating system is made up of compound film tube assembly 19 and nitrogen export pipeline system; Described nitrogen injection drilling technology automatic control system is carried out electric system by programmable automatic control system 15 and technology controlling and process and is formed.
All devices all is fixedly installed in the box prying body 3, effective reduced volume not only, and connect between each parts firm, stably operating device performance and nitrogen gas purity; The air pretreatment system can be clean with the dust in the pressurized air, contaminant removal, and air is reached be adapted to the optimal separation temperature of composite membrane, to improve the output and the purity of nitrogen; Compound film tube assembly in the nitrogen film separating system has advantages such as operating temperature range is big, water tolerance is strong, oil-proofness is strong, resistance to crocking is strong, can safeguard, these advantages are that the homogeneous membrane pipe module on the present market is not available; Programmable automatic control system 15 is the PLC controller, is a kind of general automatic control system, can control automatically by the preset value of design variablees such as the temperature in the nitrogen film separating system, pressure, nitrogen gas purities.
As shown in Figure 1, air filter group 11 is: coarse filtration air filter 9, middle air filtering strainer 10, fine filtering air filter 12 and ultra-fine air filtering strainer 13 serial in order link to each other.This level Four strainer can thoroughly be removed dust and the impurity in the pressurized air, and the difficult obstruction of strainer, can reduce wash number.
In box prying body 3, be equipped with airheater 5 is carried out temperature controlled temperature regulator 16.The same with temperature control mode commonly used, the induction end of temperature regulator 16 is installed on the gas outlet end of airheater 5, the control end of temperature regulator 16 is connected with the relay1 switch of airheater 5, when the air themperature of the gas outlet end of airheater 5 is lower than design temperature, airheater 5 work; When the air themperature of the gas outlet end of airheater 5 was higher than design temperature, airheater 5 quit work.The air themperature of the gas outlet end of airheater 5 just can keep more stable like this, helps nitrogen separation.
In box prying body 3, air pressure safety governor 4 is installed, the pressure detector 2 of air pressure safety governor 4 is installed on the tracheae between air filter group 11 and the airheater 5, and the control end of air pressure safety governor 4 is connected with airheater 5.There is not air admission when system's running; or air admission is arranged but pressure during less than a certain set(ting)value; airheater 5 can cut out under the effect of air pressure safety governor 4 automatically, thereby protective membrane group and airheater 5 make that the film pipe is stable, trouble-free service and being without prejudice.
Straight-through tracheae 6 is installed between compressed air inlet pipe 7 and nitrogen escape pipe 21, on straight-through tracheae 6, manually-operated gate 18 is installed.Straight-through tracheae 6 uses pressurized air easily when being convenient to need in the well site.
On defective nitrogen exhaust pipe 17, pressure release valve 14 is installed.Behind the system-down, still have high pressure gas in pipeline and the pocket, do not meet the well site safety standard, remove the resettlement operation, can use pressure release valve 14 to allow the pressure of internal system be released for the ease of implementing peripheral conduits safely.
Between nitrogen film separating system and nitrogen storage gas tank 20, nitrogen gas purity Controlling System 22 is installed.The ultimate principle of nitrogen gas purity Controlling System 22 is by product gas sample detecting branch road, show oxygen content gas (promptly feeding back purity of product gas) at that time by oxygen inspection battery online detected gas at random oxygen level and by oxygen analyzer, make the film group obtain rational pressure difference and the purity of adjustments of gas by regulating the control of purity valve.
Port at compressed air inlet pipe 7 and nitrogen escape pipe 21 all is equipped with by benevolence rapid-acting coupling 1, and benevolence rapid-acting coupling 1 is connected with box prying body 3 by bracing means.Powerful impulsive contact force when this structure can cushion site work prevents to damage joint and pipe welding seam.
In practical work process, the compressed air inlet pipe of the film separation and nitrogen-making system of pressurized air from the present invention enters, undertaken entering air filter group 11 after the cooled dehydrated by air-cooler 8 (generally adopting air cooling way) then, air filter group 11 can be with the dust in the pressurized air, contaminant removal is clean, this helps protecting compound film tube, clean pressurized air is sent to nitrogen film separating system 19 after being heated to certain temperature (being the best with 50 degrees centigrade generally) through airheater, the nitrogen film separating system is made of compound film tube assembly 19 and nitrogen export pipeline system, compound film tube assembly 19 is hollow composite membrane bundles cylindraceous, every bundle has comprised up to a million tubular fibres, so that separating area to greatest extent to be provided, about tens microns of every Fibre diameter, hairline as the people is thin, pressurized air is entered by an end of fibrous bundle, gas molecule under pressure, at first in the contact of the high-tension side of composite membrane, be absorption then, dissolving, diffusion, precipitation, overflow, the infiltration rate difference of every kind of gas, oxygen, carbonic acid gas, the infiltration rate of water vapour etc. is fast, ooze out to the low pressure outside by the inboard fibre wall of high pressure, be discharged in the outside air by the opening of compound film tube assembly 19 1 sides; " gas " that infiltration rate is little---nitrogen is enriched in the high pressure inboard, is expelled to the nitrogen storage gas tank by the other end of compound film tube assembly 19, thereby has realized that oxygen one nitrogen separates, and obtains nitrogen.
Fig. 2 is the nitrogen manufacturing flow chart among the present invention.As shown in Figure 2, outside air passes through successively with lower member after air compressor unit 23 compressions: compressed air inlet pipe 7, air control valve 24, thermometer 25, air-cooler 8, air filter group 11, tensimeter 26, air pressure safety governor 4, airheater 5 (airheater 5 external temperature controllers 16), thermometer 29, air pneumavalve 30, compound film tube assembly 19, through the gas behind the compound film tube assembly 19 is the nitrogen that contains minor amounts of oxygen, this nitrogen passes through oxygen content transmitter 31 more successively, temperature sensor 32, tensimeter 33, under meter 34, flow control valve 35, back pressure valve 36, be separated into the master then, from two branch roads, main branch road is: nitrogen gas valve 37, nitrogen storage gas tank 20, nitrogen delivery valve 41, the nitrogen escape pipe, from branch road be: pressure release valve 14, defective nitrogen blow-off valve 40, defective nitrogen exhaust pipe (17), generalized case is by main branch road, when needing decompression or discharging defective nitrogen by from branch road; In addition, straight-through tracheae 6 is installed between compressed air inlet pipe 7 and nitrogen escape pipe 21, on straight-through tracheae 6, manually-operated gate 18 is installed.
In conjunction with Fig. 1 and Fig. 2, film separation and nitrogen-making method among the present invention, control with each variable in 15 pairs of nitrogen separation systems of programmable automatic control system, its controlled variable is: the gas temperature of the air inlet end of described nitrogen film separating system is shown temperature≤65 of thermometer 29 ℃, and the gaseous tension of the air inlet end of described nitrogen film separating system is the shown pressure＜2.41Mpa of tensimeter 26; The control method of programmable automatic control system 15 is: when the gas temperature of the air inlet end of described nitrogen film separating system is shown temperature＞65 of thermometer 29 ℃, programmable automatic control system 15 can cut off the power supply of airheater 5 automatically, when the gaseous tension of the air inlet end of described nitrogen film separating system is the shown pressure of tensimeter 26 〉=2.41Mpa, programmable automatic control system 15 can be opened pressure release valve 14 decompressions, the gas oxygen content of the outlet side of described nitrogen film separating system is that 0.01-5% passes through the control of nitrogen gas purity Controlling System, its principle is: by product gas sample detecting branch road, show oxygen content gas at that time by oxygen inspection battery online detected gas at random oxygen level and by oxygen analyzer, regulate by 15 pairs of control of purity valves of programmable automatic control system, make the film group obtain rational pressure difference and the oxygen level of adjustments of gas, the product nitrogen amount of the outlet side of described nitrogen film separating system is 1800m
3/ h-5400m
3/ h; Regulating defective nitrogen blow-off valve 40 by programmable automatic control system 15 controls.
Claims (10)
1, a kind of composite membrane that is used for drilling technology separates nitrogen gas generating system, comprise air pretreatment system, nitrogen film separating system and nitrogen injection drilling technology automatic control system, under the control of nitrogen injection drilling technology automatic control system, pressurized air is through air pretreatment system, the output of nitrogen film separating system, and it is characterized in that: all devices all places in the box prying body (3); Described air pretreatment system is formed by connecting by tracheae successively by compressed air inlet pipe (7), air-cooler (8), air filter group (11) and airheater (5); Described nitrogen film separating system is made up of compound film tube assembly (19) and nitrogen export pipeline system; Described nitrogen injection drilling technology automatic control system is carried out electric system by programmable automatic control system (15) and technology controlling and process and is formed.
2, the composite membrane that is used for drilling technology according to claim 1 separates nitrogen gas generating system, and it is characterized in that: described air filter group (11) is: coarse filtration air filter (9), middle air filtering strainer (10), fine filtering air filter (12) and ultra-fine air filtering strainer (13) serial in order link to each other.
3, the composite membrane that is used for drilling technology according to claim 1 separates nitrogen gas generating system, it is characterized in that: be equipped with in described box prying body (3) airheater (5) is carried out temperature controlled temperature regulator (16).
4, the composite membrane that is used for drilling technology according to claim 1 separates nitrogen gas generating system, it is characterized in that: air pressure safety governor (4) is installed in described box prying body (3), the pressure detector (2) of air pressure safety governor (4) is installed on the tracheae between air filter group (11) and the airheater (5), and the control end of air pressure safety governor (4) is connected with airheater (5).
5, the composite membrane that is used for drilling technology according to claim 1 separates nitrogen gas generating system, it is characterized in that: between described compressed air inlet pipe (7) and nitrogen escape pipe (21), straight-through tracheae (6) is installed, manually-operated gate (18) is installed on straight-through tracheae (6).
6, the composite membrane that is used for drilling technology according to claim 1 separates nitrogen gas generating system, it is characterized in that: pressure release valve (14) is installed on defective nitrogen exhaust pipe (17).
7, the composite membrane that is used for drilling technology according to claim 1 separates nitrogen gas generating system, it is characterized in that: between described nitrogen film separating system and nitrogen storage gas tank (20) nitrogen gas purity Controlling System (22) is installed.
8, the composite membrane that is used for drilling technology according to claim 1 separates nitrogen gas generating system, it is characterized in that: the port at described compressed air inlet pipe (7) and nitrogen escape pipe (21) all is equipped with by benevolence rapid-acting coupling (1), and benevolence rapid-acting coupling (1) is connected with box prying body (3) by bracing means.
9, the composite membrane that is used for drilling technology according to claim 1 separates the used film separation and nitrogen-making method of nitrogen gas generating system, it is characterized in that: each variable in the nitrogen separation system is controlled with programmable automatic control system (15), its controlled variable is: the gas temperature of the air inlet end of described nitrogen film separating system≤65 ℃, the gaseous tension＜2.41Mpa of the air inlet end of described nitrogen film separating system; The control method of programmable automatic control system (15) is: during the gas temperature of the air inlet end of described nitrogen film separating system＞65 ℃, programmable automatic control system (15) can cut off the power supply of airheater (5) automatically, during the gaseous tension of the air inlet end of described nitrogen film separating system 〉=2.41Mpa, programmable automatic control system (15) can be opened the pressure release valve decompression, the gas oxygen content of the outlet side of described nitrogen film separating system is that 0.01-5% passes through nitrogen gas purity Controlling System (22) control, its principle is: by product gas sample detecting branch road, show oxygen content gas at that time by oxygen inspection battery online detected gas at random oxygen level and by oxygen analyzer, by programmable automatic control system (15) the control of purity valve is regulated, make the film group obtain rational pressure difference and the oxygen level of adjustments of gas, the product nitrogen amount of the outlet side of described nitrogen film separating system is regulated defective nitrogen blow-off valve by programmable automatic control system (15) and is controlled.
10, the composite membrane that is used for drilling technology according to claim 1 separates the used film separation and nitrogen-making method of nitrogen gas generating system, it is characterized in that: programmable automatic control system (15) to the parameter of each Variable Control in the nitrogen separation system is: the gas oxygen content of the outlet side of described nitrogen film separating system is 0.01-5%, and the product nitrogen amount of the outlet side of described nitrogen film separating system is 1800m
3/ h-5400m
3/ h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100493441A CN100569634C (en) | 2007-06-20 | 2007-06-20 | The composite membrane that is used for drilling technology separates nitrogen gas generating system and film separation and nitrogen-making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100493441A CN100569634C (en) | 2007-06-20 | 2007-06-20 | The composite membrane that is used for drilling technology separates nitrogen gas generating system and film separation and nitrogen-making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101100292A true CN101100292A (en) | 2008-01-09 |
| CN100569634C CN100569634C (en) | 2009-12-16 |
Family
ID=39034777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100493441A Expired - Fee Related CN100569634C (en) | 2007-06-20 | 2007-06-20 | The composite membrane that is used for drilling technology separates nitrogen gas generating system and film separation and nitrogen-making method |
Country Status (1)
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|---|---|
| CN (1) | CN100569634C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022080A (en) * | 2010-08-18 | 2011-04-20 | 杭州嘉隆气体设备有限公司 | Dehydration device for air well drilling |
| CN102269331A (en) * | 2011-07-27 | 2011-12-07 | 中国船舶重工集团公司第七二二研究所 | Pneumatic circuit safety control system |
| CN107739024A (en) * | 2017-11-14 | 2018-02-27 | 合肥创想能源环境科技有限公司 | The technique that a kind of UF membrane composite algorithm prepares nitrogen |
| CN114314530A (en) * | 2022-01-06 | 2022-04-12 | 烟台杰瑞石油装备技术有限公司 | Membrane nitrogen production system and control method thereof |
-
2007
- 2007-06-20 CN CNB2007100493441A patent/CN100569634C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022080A (en) * | 2010-08-18 | 2011-04-20 | 杭州嘉隆气体设备有限公司 | Dehydration device for air well drilling |
| CN102269331A (en) * | 2011-07-27 | 2011-12-07 | 中国船舶重工集团公司第七二二研究所 | Pneumatic circuit safety control system |
| CN107739024A (en) * | 2017-11-14 | 2018-02-27 | 合肥创想能源环境科技有限公司 | The technique that a kind of UF membrane composite algorithm prepares nitrogen |
| CN114314530A (en) * | 2022-01-06 | 2022-04-12 | 烟台杰瑞石油装备技术有限公司 | Membrane nitrogen production system and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100569634C (en) | 2009-12-16 |
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