CN100549661C - Fast desorption meter for gas content of goal seam - Google Patents
Fast desorption meter for gas content of goal seam Download PDFInfo
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- CN100549661C CN100549661C CNB2007100651854A CN200710065185A CN100549661C CN 100549661 C CN100549661 C CN 100549661C CN B2007100651854 A CNB2007100651854 A CN B2007100651854A CN 200710065185 A CN200710065185 A CN 200710065185A CN 100549661 C CN100549661 C CN 100549661C
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Abstract
Fast desorption meter for gas content of goal seam is used to test the coal heart, measures coal-bed gas content rapidly and accurately.Comprise Computer Processing, fast desorption and measuring system composition.Feature is: the fast desorption system comprises sample sealable tank and broken sample platform.Gland bonnet is arranged at sealable tank top, and the stirring piece is arranged in the sealable tank.Sealable tank is connected with draft tube and gas outlet, and gas outlet connects measuring system.Sealable tank is fixed on the platform.The fast desorption system comprises graduated cylinder and water bottle, and the top of graduated cylinder connects gas outlet, and the bottom of graduated cylinder connects water bottle by wireway.Effect is: test after coal core sample is pulverized, gather the coal-bed gas content data, estimate this area's coal bed gas resource potentiality and exploration prospect fast, research different regions gas-bearing property feature, the air content regularity of distribution and coal seam reservoirs gas storage capability.
Description
Technical field
The present invention relates to the cbm exploration technical field, particularly a kind of isolated plant that is used to measure the coal-bed gas content experiment.Utilize this experimental provision can in the cbm exploration well, measure coal-bed gas content rapidly and accurately.
Background technology
Coal-seam gas is a kind of being stored in the coal seam, is conigenous the unconventional gas resources of storage certainly, and an important parameter estimating its enrichment degree is an air content.Whether the coal-seam gas that will assess the somewhere effectively has business-like prospect, must set up air content evaluating data accurately, and these air content data are used for gas reservoir simulation and production forecast.Must understand coal-bed gas content and coal seam desorption properties, the air content testing apparatus provides the only instrument of this data for this reason.Therefore, the coal-bed gas content testing apparatus just seems especially important in the cbm exploration exploitation.
Coal-seam gas air content assay method mainly contains direct method and indirect method both at home and abroad.The theoretical foundation of direct method is: the volume of coal-seam gas in early days in the desorption process release rate of coal-seam gas be directly proportional with the square root of time.The early stage coal heart gas that lifting process lost in pit shaft can calculate in view of the above, and the loss gas that total air content then is the early stage coal heart adds stripping gas and residual volume sum.Indirect method mainly is that the heart isothermal adsorption curve and curve analyzed of producing coal is done in requirement, also needs to understand reservoir pressure and temperature.The on-the-spot original place of coal-seam gas preparatory reconnaissance borehole air content mainly adopts direct method, and this also is the place of the basic theory of this testing equipment development.
At present, coal-seam gas air content experimental apparatus for testing mainly contains full-automatic air content analyzer and homemade on-the-spot air content sensing equipment both at home and abroad.Full-automatic air content analyzer adopts that seal closure is heat insulation, the major diameter aluminium pot is deposited coal sample, and heating watt is heated to closed chamber, adopts the temperature of electronic monitoring device monitoring aluminium pot simultaneously.The test effect is more stable.It is many that homemade on-the-spot air content analyzer has desorb jar model, and volume is little, and usable range is wide, be convenient to move characteristics such as transportation.But existing instrument all is to adopt the mode of nature desorb to carry out air content mensuration.Shortcoming is that the test period of nature desorption mode is long, and finishing coal core sample test period needs time of some months, and often a very long time after the prospect pit finishing drilling of coal-seam gas, the result of air content does not also measure.Test result is difficult to directive function is played in later stage coal-seam gas drilling well.Existing air content sensing equipment is difficult to realize quick test, is difficult to adapt to fast-developing coal-seam gas cause, and the measuring system of these equipment adopts single buret to measure simultaneously, the measurement capability deficiency.Therefore, it was both quick, efficient to press for one of research and development, met the air content fast desorption experimental provision of coal-seam gas air content test philosophy again.
Summary of the invention
The purpose of this invention is to provide a kind of fast desorption meter for gas content of goal seam, the coal heart is pulverized the back measure the coal-seam gas that is adsorbed in the coal heart, finish the test job of coal-seam gas air content, coal heart air content is tested fast, overcome the existing slow shortcoming of air content testing apparatus test speed.
(1) can carry out the work of coal-seam gas site desorption, can measure original place air content data apace again, in time provide basic data for studying certain regional coal seam gas storage capability.
(2) a plurality of coal hearts that can obtain wire line coring are simultaneously measured simultaneously, improve test efficiency.
The present invention solves the technical scheme that its technical matters takes: fast desorption meter for gas content of goal seam is made up of computer acquisition disposal system, fast desorption system and measuring system three parts.Wherein computer acquisition disposal system comprises the input and output of computer-processing software and data.Feature of the present invention is: the fast desorption system comprises sample sealable tank and broken sample platform.Gland bonnet is arranged at sealable tank top, and the stirring piece is arranged in the sealable tank.Sealable tank is connected with draft tube and gas outlet, and gas outlet connects measuring system.Broken sample platform comprises motor, and motor top is connected with on support bar, the support bar and is fixed with platform.Sealable tank is fixed on the platform.Measuring system comprises graduated cylinder and water bottle, and the top of graduated cylinder connects gas outlet, and the bottom of graduated cylinder connects water bottle by wireway.The present invention utilizes the motor-driven platform to shake, and drive sealable tank and produce vibrations, and it is reciprocating in sealable tank to drive the stirring piece.Stir piece and clash into mutually with coal core sample, make the coal core sample pulverizing, it is Powdered be in a few minutes coal core sample to be crushed to the 60-100 purpose.Along with the destruction of coal heart physical arrangement, the coal-seam gas that is adsorbed in the coal heart is promptly separated by gas outlet and is drawn onto in the buret, has shortened the gas desorption time greatly, and on-the-spot air content determination test shortens to a week by original some months.
The structure of sealable tank is made of tank body, gland bonnet, is fixed with draft tube and gas outlet on the gland bonnet, between tank body and the gland bonnet O-ring seal is arranged.
Opening encapsulation jar and capping sealable tank have pressure lever mechanism on platform for convenience.The structure of pressure lever mechanism is to be fixed with two vertical rods on platform, and one of them vertical rod has hinge to connect an end of cross bar; Another vertical rod upper end can fixed transverse rod.There is downward protrusion piece the cross bar middle part, and the protrusion piece is against and compresses gland bonnet on the gland bonnet.Sealable tank seals by pressure lever mechanism, and when depression bar compressed gland bonnet downwards, sealable tank was sealed.
The stirring piece is arranged in the coal core sample sealable tank, and the structure that stirs piece is 35 millimeters of diameters, high 20 millimeters column type iron blocks, and material is No. 45 steel.
Be fit to the vibrations that the coal heart is pulverized for sealable tank is produced, quicken the coal heart and pulverize, the support bar that described motor top connects is a volute spring pole.The quantity of volute spring pole is 4.
Described graduated cylinder adopts the cylindrical glass steel cylinder that has gland bonnet, on the graduated cylinder outer wall scale is arranged.The capacity of graduated cylinder can be between the 800-1300 milliliter.Gas outlet is connected on the gland bonnet of graduated cylinder.Graduated cylinder is vertically placed.The graduated cylinder bottom is connected with wireway.
Described water bottle profile is a cylindrical structure, the inorganic transparent plastic material, and volume is between the 600-800 milliliter.The lid of water bottle connects wireway.Water bottle is inverted, and the height of water bottle is equal with the liquid level in the graduated cylinder.The height of water bottle can be along the support up-down adjustment.
Computer processing system does not belong to category of the present invention, is not described in detail.The process that operation the present invention experimentizes, on-the-spot staff can finish according to experiment rules and operation steps, is not described in detail.
Beneficial effect of the present invention: the said structure design of fast desorption meter for gas content of goal seam of the present invention has bigger improvement, the structure of the tester that breaks traditions and method of testing.Utilize this desorption instrument that the coal heart is pulverized the back and measure the air content that the coal heart parses, can test the coal heart that takes out in the cbm exploration, thereby obtain coal-bed gas content data accurately, utilize computer processing system to handle, estimate this area's coal bed gas resource potentiality and exploration prospect fast.Be applicable to that the cbm exploration technical field promotes the use of.This desorption instrument adopts unique fast desorption system, measuring system and computer processing system, the time of testing well according to the different geology feature-sets that different regions had, carry out the on-the-spot coal-seam gas fast desorption experiment of exploration, can measure and study different regions gas-bearing property feature, the air content regularity of distribution and coal seam reservoirs gas storage capability.
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Description of drawings
Fig. 1 is the diagrammatic cross-section of fast desorption meter for gas content of goal seam of the present invention, is an embodiment.
Fig. 2 is sealable tank 5 and the diagrammatic cross-section that stirs piece 6.
Among the figure, 1. draft tube, 2. pressure lever mechanism, 3. gland bonnet, 4. gas outlet, 5. sealable tank 6. stirs piece, 7. platform, 8. spring supporting bar, 9. bolt, 10. motor, 11. bases, 12. power supplys, 13. fixed supports, 14. wireway, 15. water bottles, 16. burets, 17. geometrical clamps, 18. O-ring seals, 19. tank bodies.
Embodiment
Embodiment 1: consult Fig. 1.Fast desorption meter for gas content of goal seam of the present invention is made up of computer acquisition disposal system, fast desorption system and measuring system three parts.
The computer acquisition disposal system comprises the collection input and output of computer-processing software and data.
The fast desorption system has 4, connects the graduated cylinder 16 of measuring system respectively by gas outlet 4.There are coal core sample sealable tank 5 and broken sample platform in each fast desorption system.Sealable tank 5 internal diameters are 150 millimeters, highly are 50 millimeters.The structure of sealable tank 5 is to be made of tank body 19, stirring piece 6, gland bonnet 3; Gland bonnet 3 is by draft tube 1 and gas outlet 4, and O-ring seal 18 is equipped with in the bottom.Gland bonnet 3 is arranged at tank body 19 tops, between tank body 19 and the gland bonnet 3 O-ring seal 18 is arranged.There is one to stir piece 6 in the sealable tank 5.The structure that stirs piece 6 is 35 millimeters of diameters, high 20 millimeters column type iron blocks, and material is No. 45 steel.
Measuring system has 4 graduated cylinders 16 and 4 water bottles 15.The top of graduated cylinder 16 connects gas outlet 4, and the bottom of graduated cylinder 16 connects water bottle 15 by wireway 14.Graduated cylinder 16 adopts the cylindrical glass steel cylinder that has gland bonnet, on graduated cylinder 16 outer walls scale is arranged, and minimum scale is 10 milliliters.The capacity of graduated cylinder 16 is 1300 milliliters.Gas outlet 4 is connected on the gland bonnet.Graduated cylinder 16 is vertically placed.Graduated cylinder 16 bottoms are connected with wireway 14.Water bottle 15 adopts cylindrical structure, the inorganic plastics material, and volume is between the 600-800 milliliter.The lid of water bottle 15 connects wireway 14.Water bottle 15 is inverted, and during work, the height of water bottle 15 liquid levels is equal with the liquid level in the graduated cylinder.The height of water bottle 15 can be along the litter up-down adjustment of support 13.
After weighing, pack into coal core sample in the sealable tank 5, utilize motor 10 of the present invention to drive and make sample sealable tank 5 produce vibrations, drive that to stir piece 6 reciprocating sealable tank 5 in, stir piece 6 and coal core sample and clash into the very fast pulverizing of coal core sample mutually.It is Powdered coal core sample to be crushed to the 60-100 purpose in a few minutes.Along with the destruction of coal heart physical arrangement, the coal-seam gas that is adsorbed in the coal heart will promptly be separated by gas outlet 4 and is drawn onto in the graduated cylinder 16.By regulating water bottle 15, liquid level and the liquid level in the graduated cylinder 16 in the water bottle 15 are maintained an equal level, at this time obtain the reading of graduated cylinder 16, calculate.Divided by the coal core sample quality, promptly obtain the air content in coal seam with the gas volume of separating out.
Mode arranged side by side is equipped with 4 cover fast desorption meter for gas content of goal seam, and graduated cylinder 16 is placed on the same fixed support 13, and is fixing with geometrical clamp 17.A fast desorption meter for gas content of goal seam can carry out 4 coal core sample tests simultaneously, has improved measurement capability exponentially, has improved conventional efficient.
According to above-mentioned fast desorption meter for gas content of goal seam principle and structural design, finished a fast desorption meter for gas content of goal seam, and successfully carried out the experimental work of coal-seam gas site desorption.Under the situation of maintaining secrecy, Australian BHPB company is carried out the air content desorption experiment at 12 mouthfuls of preparatory reconnaissance boreholes of Shanxi Baode area probing, the data of utilizing natural at a slow speed desorption method to measure the data surveyed and Australian Geogas company compare, the same degree of depth survey the air content data be identical.Show that this apparatus can finish coal-seam gas desorb work, experimental data is accurately credible, measures air content in addition efficiently and easily, improves tens times than conventional air content desorption instrument efficient, is a kind of creative new design.
Embodiment 2: consult accompanying drawing 2.The maximum difference that air content is resolved the fast desorption mechanism of instrument is that two cylindrical stirring pieces 6 made of iron are arranged in the sealable tank 5.We once adopted iron block to add different institutions such as iron hoop, discus in the past, had problems such as pulverizing insufficient, pulverizing time length when pulverizing coal sample.After adopting two to stir piece 6 pulverizing coal samples, two are stirred piece 6 common vibrations work during motor 10 vibrations, make sealable tank 5 be issued to same crushing effect at relatively low vibration frequency like this.Adopt low power motor to reduce motor weight, removed the weight of firm banking simultaneously, this has alleviated the weight that whole air content resolved the fast desorption mechanism of instrument greatly.More than 170 kilogram in the past, overall weight is super only 30 kilograms now, and this provides huge convenience for field trial.
For safety, abate the noise in addition, we have adopted seal closure to the fast desorption mechanism of air content desorption instrument, and master cock is installed in seal closure.
Claims (7)
1, a kind of fast desorption meter for gas content of goal seam is by the computer acquisition disposal system, fast desorption system and measuring system three parts are formed, wherein computer acquisition disposal system comprises the input and output of computer-processing software and data, it is characterized in that: the fast desorption system comprises sample sealable tank (5) and broken sample platform, gland bonnet (3) is arranged at sealable tank (5) top, sealable tank has the stirring piece in (5), sealable tank (5) is connected with draft tube (1) and gas outlet (4), gas outlet (4) connects measuring system, broken sample platform comprises motor (10), motor (10) top is connected with support bar (8), be fixed with platform (7) on the support bar (8), sealable tank (5) is fixed on the platform (7), measuring system comprises graduated cylinder (16) and water bottle (15), the top of graduated cylinder (16) connects gas outlet (4), the bottom of graduated cylinder (16) connects water bottle (15) by wireway (14), and the height of water bottle (15) can be along support (13) up-down adjustment.
2, fast desorption meter for gas content of goal seam according to claim 1, it is characterized in that: the structure of sealable tank (5) is made of tank body (19), gland bonnet (3), be fixed with draft tube (1) and gas outlet (4) on the gland bonnet (3), between tank body (19) and the gland bonnet (3) O-ring seal (18) arranged.
3, fast desorption meter for gas content of goal seam according to claim 1, it is characterized in that: pressure lever mechanism (2) is arranged on platform (7), the structure of pressure lever mechanism (2) is to be fixed with two vertical rods on platform (7), and one of them vertical rod has hinge to connect an end of cross bar; Another vertical rod upper end energy fixed transverse rod, there is downward protrusion piece the cross bar middle part, and the protrusion piece is against on the gland bonnet (3) and compresses gland bonnet.
4, fast desorption meter for gas content of goal seam according to claim 1 is characterized in that: stirring piece (6) is arranged in the described sealable tank (5), and the shape that stirs piece (6) is cylindric.
5, according to claim 1 or 2 or 3 or 4 described fast desorption meter for gas content of goal seam, it is characterized in that: the support bar (8) that described motor (10) top connects is volute spring pole (8), and the quantity of volute spring pole (8) is 4.
6, according to claim 1 or 2 or 3 or 4 described fast desorption meter for gas content of goal seam, it is characterized in that: described graduated cylinder (16) adopts the cylindrical glass steel cylinder that has gland bonnet, on graduated cylinder (16) outer wall scale is arranged, the capacity of graduated cylinder (16) is between the 800-1300 milliliter, gas outlet (4) is connected on the gland bonnet of graduated cylinder (16), graduated cylinder (16) is vertical to be placed, and graduated cylinder (16) bottom is connected with wireway (14).
7, according to claim 1 or 2 or 3 or 4 described fast desorption meter for gas content of goal seam, it is characterized in that: described water bottle (15) profile is a cylindrical structure, the inorganic transparent plastic material, volume is between the 600-800 milliliter, the lid of water bottle (15) connects wireway (14), water bottle (15) is inverted, and during work, the height of water bottle (15) liquid level is equal with the liquid level in the graduated cylinder (16).
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| CNB2007100651854A CN100549661C (en) | 2007-04-06 | 2007-04-06 | Fast desorption meter for gas content of goal seam |
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| CNB2007100651854A CN100549661C (en) | 2007-04-06 | 2007-04-06 | Fast desorption meter for gas content of goal seam |
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| CN100549661C true CN100549661C (en) | 2009-10-14 |
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