CN106053291A - Device and method for immediately measuring densities of gas-containing liquid before and after deaeration - Google Patents
Device and method for immediately measuring densities of gas-containing liquid before and after deaeration Download PDFInfo
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- CN106053291A CN106053291A CN201610471078.0A CN201610471078A CN106053291A CN 106053291 A CN106053291 A CN 106053291A CN 201610471078 A CN201610471078 A CN 201610471078A CN 106053291 A CN106053291 A CN 106053291A
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- fluid
- degasification
- measurement apparatus
- gassiness
- overfall
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
- G01N9/04—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of fluids
Abstract
The invention relates to a device and method for immediately measuring densities of gas-containing liquid before and after deaeration. According to the technical scheme, the device comprises an adjustable-speed motor, a cone-shaped rotational flow cavity, a gas-containing measuring device and a deaeration measuring device, wherein the upper side of the cone-shaped rotational flow cavity is connected with the gas-containing measuring device through a pipeline, and the lower side of the cone-shaped rotational flow cavity is connected with the deaeration measuring device through a pipeline; a first weighing device is arranged on the gas-containing measuring device; the adjustable-speed motor is arranged on the top of the cone-shaped rotational flow cavity, and an exhaust hole is formed in the top of the top of the cone-shaped rotational flow cavity; and a second weighing device is arranged on the deaeration measuring device. The device has the beneficial effects that the device can be used for carrying out real-time accurate measurement on the densities of drilling fluid before and after the deaeration when being communicated with atmosphere, the fluid deaeration is realized between the two measuring devices by virtue of the rotational flow effect of the fluid and the rotation of impellers, and the measured liquid can be guaranteed to be the drilling fluid which is returned from a well just now by virtue of the high-speed impellers and the positional designs of an inlet and an outlet. The device is simple in structure and convenient to machine. Compared with existing density measuring devices, the device has the characteristics that the volume is small, the measurement is real-time and accurate, the labor is saved, and the like.
Description
Technical field
The present invention relates to petroleum works association area, particularly to density before and after a kind of instant measurement air containing fluid degasification
Device and method.
Background technology
Before and after the air containing fluid degasification returned out in research instant measurement Oil/gas Well, the device of different densities is at target zone
The well control safety crept into is significant, in order to grasp density case and the liquid column hydrostatic pressure of drilling fluid in well at any time, really
Surely mix drilling fluid density after gas and reduce situation, and cause reason that density reduces (in addition to mixing gas, if with also having other
Layer liquid is mixed into circulating system), the adjustment for subsequent well liquid provides foundation.Traditionally by a kind of density can only be measured
Device measures；And during actual job, metering system is to remove region pair first with densimeter three by workman the most accurately
The drilling fluid returned out in well carries out density measure before degasification, and recycling degasification densimeter carries out density measure after degasification, the most only
A kind of density can be measured, and can not measure the most in real time.This research is according to the needs of field operation, by special purpose device to containing
Gas-liquid is de-gassed, and respectively liquid is carried out density measure, can reach to survey two kinds of density continuously before and after degassing
The effect of amount, is also carried out verification experimental verification analysis to the experimental prototype effect produced, to the density of drilling fluid in gassiness Oil/gas Well
Monitor significant.
Drilling fluid density measuring device uses widely in the drillng operation of petroleum works association area.Drillng operation
Middle utilize the liquid column hydrostatic pressure of drilling fluid to balance the strata pressure of down-hole, when in stratum, the fluid such as oil, gas and water enters into drilling well
After liquid system, the density of drilling fluid will certainly be reduced, thus cause the unbalance of borehole pressure, the accident such as well kick, blowout occurs.Pass
The manual measurement method that system uses wastes time and energy, and other continuous density measurement apparatus are merely able to measure a kind of density,
Can not accurately grasp the formation fluid situation being mixed in drilling fluid.
Should be used for actual from disclosed document report, the instant measurement up to the present carried out based on above-mentioned thought contains
Before and after gas-liquid degasification, the research of density have not been reported with application.This research is filled on the basis of following strictly basic objective law
Divide and give play to a subjective initiative, explore according to existing theory and application, open swirl-flow devices new in terms of density measure
Application.
Summary of the invention
The purpose of the present invention is aiming at the drawbacks described above that prior art exists, it is provided that a kind of instant air containing fluid of measuring removes
The device and method of density before and after gas, reaches, in the case of formation fluid is not clear, to measure the brill returned out in Oil/gas Well in real time
Drilling fluid density after the liquid-tight degree of well and degasification.
The device of density before and after a kind of instant measurement air containing fluid degasification that the present invention mentions, its technical scheme is: include
Buncher (a5), taper vortex chamber (a7), gassiness measurement apparatus (a14) and degasification measurement apparatus (a15), described taper rotation
The upside of stream chamber (a7) connects gassiness measurement apparatus (a14) by pipeline, and downside connects degasification measurement apparatus by pipeline
(a15), described gassiness measurement apparatus (a14) be provided with the first gassiness fluid intake (a1), the first weighing device (a2), first overflow
Head piece (a3), the first weighing device (a2) is arranged on the bottom of gassiness measurement apparatus (a14), and the first overfall (a3) is arranged on and contains
The middle and upper part of gas measurement apparatus (a14)；The top of described taper vortex chamber (a7) is provided with buncher (a5) and steam vent (a6),
Buncher (a5) drives the impeller (a9) of taper vortex chamber (a7) inner chamber to rotate；Described degasification measurement apparatus (a15) is provided with
Deaeration fluid inlet (a11), the 3rd overfall (a12), the second weighing device (a13), the second weighing device (a13) is arranged on and removes
The bottom of gas measurement apparatus (a15), the 3rd overfall (a12) is arranged on the middle and upper part of degasification measurement apparatus (a15).
Helical flow path (a8) is distributed on the inwall of above-mentioned taper vortex chamber (a7), and described impeller (a9) is provided with inclination
Angle.
The middle and lower part of above-mentioned taper vortex chamber (a7) is provided with the second overfall (a10), and pipeline passes through the second overfall (a10)
It is connected to the deaeration fluid inlet (a11) of degasification measurement apparatus (a15).
The middle and upper part of above-mentioned taper vortex chamber (a7) is provided with the second gassiness fluid intake (a4), and pipeline contains air-flow by second
Body entrance (a4) is connected to first overfall (a3) of gassiness measurement apparatus (a14).
The measuring method of the device of density before and after a kind of instant measurement air containing fluid degasification that the present invention mentions, including following
Step:
(1) mixture containing landwaste, gas, formation water etc. returned out from Oil/gas Well down-hole arrives slurry outlet through well head (1)
Groove (2), is filtered at filter screen (3) place solid phase landwaste drilling fluid by centrifugal pump (4), can be intuitively by Pressure gauge (5)
Observe the flow regime of drilling fluid, control to enter flow and the flowing speed of liquid in whole device by adjustable cut-off valve (6)
Degree, is connected with the gassiness fluid intake (a1) of measurement apparatus from stop valve (6) pipeline out, and carries out encapsulation process；Second
Overfall (a12) is connected with pipeline, and the drilling fluid measured drains into mud pit (9)；Three overfalls in measurement apparatus
The openst so that lower position can be flowed to after guaranteeing liquid flooding immediately, to prevent the liquid level in three containers higher than overflow
Mouthful, cause measurement inaccurate；Other do not survey drilling fluid through mud line flow to three except equipment (8) carry out desilting desanding degasification after return to
Mud pit (9), device has been connected with pipeline；
(2), test: be first turned on centrifugal pump (4) closedown stop valve and carry out pressure testing operation, until Pressure gauge (5) has reading
Number, slowly opens stop valve (6) when device (a) place has fluid to flow into, guarantees that Pressure gauge (5) continues there is pressure simultaneously, represent whole
In individual device, ruuning situation is normal, after the second overfall (a12) place has drilling fluid to flow out, fills with in showing whole device
Drilling fluid, the numerical value that the first weighing device (a2), the second weighing device (a13) draw is exactly the real-time density of drilling fluid；Measure
During by adjustable cut-off valve (6) whole device is adjusted and controls, thus reach satisfied measurement effect；
(3), after test, close centrifugal pump, pipeline before and after removing and with fresh water device is cleaned up, dry in case
Reuse.
The invention has the beneficial effects as follows: with atmosphere in the case of, the drilling fluid density before and after degasification is carried out reality
Time measure accurately, make full use of the eddy flow effect of fluid self in the middle of two measurement apparatus and impeller rotate and realizes fluid and remove
Gas, entrance design and quick runner be all able to ensure that the liquid of measurement is the drilling fluid just returned out in well, this device
Simple in construction, it is simple to processing, compared with existing density measuring equipment, has volume little, measures real-time, accurate, saves manpower
Etc. feature.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the measurement apparatus of the present invention；
Accompanying drawing 2 is the structural representation of the impeller in Fig. 1；
Accompanying drawing 3 is the implementing procedure figure of the present invention；
In upper figure: the first gassiness fluid intake a1, the first weighing device a2, the first overfall a3, the second gassiness fluid intake a4,
Buncher a5, steam vent a6, taper vortex chamber a7, helical flow path a8, impeller a9, the second overfall a10, deaeration fluid inlet
A11, the 3rd overfall a12, the second weighing device a13, gassiness measurement apparatus a14, degasification measurement apparatus a15；
Well head 1, slurry outlet groove 2, filter screen 3, centrifugal pump 4, Pressure gauge 5, stop valve 6, measurement apparatus 7, three are except equipment 8, mud
Pond 9, device a, device b, device c.
Detailed description of the invention
In conjunction with accompanying drawing 1-3, the invention will be further described:
The device of density before and after a kind of instant measurement air containing fluid degasification that the present invention mentions, its technical scheme is: include speed governing
Motor a5, taper vortex chamber a7, gassiness measurement apparatus a14 and degasification measurement apparatus a15, the upside of described taper vortex chamber a7
Connecting gassiness measurement apparatus a14 by pipeline, downside connects degasification measurement apparatus a15, described gassiness measurement apparatus by pipeline
A14 is provided with the first gassiness fluid intake a1, the first weighing device a2, the first overfall a3, and the first weighing device a2 is arranged on
The bottom of gassiness measurement apparatus a14, the first overfall a3 is arranged on the middle and upper part of gassiness measurement apparatus a14；Described taper eddy flow
The top of chamber a7 is provided with buncher a5 and steam vent a6, buncher a5 and drives the impeller a9 rotation of taper vortex chamber a7 inner chamber
Turn；Described degasification measurement apparatus a15 is provided with deaeration fluid inlet a11, the 3rd overfall a12, the second weighing device a13, the
Two weighing device a13 are arranged on the bottom of degasification measurement apparatus a15, and the 3rd overfall a12 is arranged on degasification measurement apparatus a15
Middle and upper part.
Helical flow path a8, described impeller a9 are distributed on the inwall of above-mentioned taper vortex chamber a7 and are provided with angle of inclination.
The middle and lower part of above-mentioned taper vortex chamber a7 is provided with the second overfall a10, and pipeline is connected to by the second overfall a10
The deaeration fluid inlet a11 of degasification measurement apparatus a15.
The middle and upper part of above-mentioned taper vortex chamber a7 is provided with the second gassiness fluid intake a4, and pipeline is entered by the second gassiness fluid
Mouth a4 is connected to the first overfall a3 of gassiness measurement apparatus a14.
The present invention utilizes traditional cyclone theoretical and application, on the basis of traditional design principle, makees according to reality
The needs of industry improve so that it is possess the effect the most accurately measured, reach to measure the target of two kinds of density simultaneously, devise
Device parameter and technological parameter.
The fields such as petroleum works existing density measurement device, does not all have can to carry out degasification both front and back drilling well liquid-tight simultaneously
Degree immediately accurately measure device, be then that workman passes through gravimeter and measures respectively when being actually needed, every minor tick about 5 points
Clock, it is impossible to accomplish the timely process of the real-time judge to down-hole situation and subsequent job, there is bigger well control risk.The present invention
Device solves the problems referred to above well.
For achieving the above object, specific design is as follows for the present invention.Assay device main body is taper vortex chamber and weighing device.
Fluid enters vortex chamber by overfall after front portion measures, and deaerates through high-speed rotational, under the high speed rotating of impeller
Make the bubble in fluid move to surface and crush, then the drilling fluid after degasification is overflowed into rear weighing device and carry out secondary survey
Amount.
The pipe height in vortex chamber front may insure that the fluid entered in vortex chamber possesses certain initial velocity, at height
Being de-gassed in speed eddy flow, the gas of abjection gas discharge hole above vortex chamber is discharged.Former and later two weighing devices all with
Atmosphere, it is ensured that the accuracy of measurement.High-speed rotating impeller has angle [alpha], to guaranteeing that intracavity liquid bubble removes brokenly
Broken and being sufficiently mixed of drilling fluid all plays an important role, it is ensured that double measurement is all up-to-date drilling fluid density.Weighing device
Drilling fluid entrance under, outlet drilling fluid in upper design can ensure that device is all up-to-date drilling fluid, the end of bottom
Plate is fixing to the height of overfall, and base areas is also fixing, it is possible to draw according to the weight that weighing device weighs up
Fluid density.Overfall in design is the biggest, and has bigger downward-sloping angle, thus can make weighing device
After interior fluid level arrives overfall position, unnecessary fluid will flow to rapidly rear through overfall, in anti-locking apparatus
Liquid level continues to raise affects certainty of measurement.Gas discharge hole is reserved with fast connecting joint, and can connect pipeline as required will
Gas causes gas measurement device or causes safe place and discharge.Circular base plate design bottom weighing section, makes survey
The result of amount can not the impact of receptor inwall mud cake, drilling fluid density accurately can be drawn.
The measuring method of the device of density before and after a kind of instant measurement air containing fluid degasification that the present invention mentions, including following
Step:
(1) mixture containing landwaste, gas, formation water etc. returned out from Oil/gas Well down-hole arrives slurry outlet groove through well head 1
2, at filter screen 3, solid phase landwaste is filtered by 4 drilling fluids of centrifugal pump, drilling fluid can be observed intuitively by Pressure gauge 5
Flow regime, control to enter flow and the flowing velocity of liquid in whole device by adjustable cut-off valve 6, from stop valve 6
Pipeline out is connected with the gassiness fluid intake a1 of measurement apparatus, and carries out encapsulation process；Second overfall a12 and pipeline phase
Even, and the drilling fluid measured is drained into mud pit 9；Three overfalls in measurement apparatus are the openst to guarantee liquid flooding
After can flow to lower position immediately, to prevent the liquid level in three containers higher than overfall, cause measurement inaccurate；Other are not
Survey drilling fluid through mud line flow to three except equipment 8 carry out desilting desanding degasification after return to mud pit 9, device has been connected with pipeline
Become；
(2), test: be first turned on centrifugal pump 4 and close stop valve and carry out pressure testing operation, until Pressure gauge 5 has reading, slowly
Slowly opening stop valve 6 has fluid to flow at device a, guarantees that Pressure gauge 5 continues there is pressure simultaneously, runs in representing whole device
Situation is normal, after having drilling fluid to flow out, fills with drilling fluid in showing whole device at the second overfall a12, and first claims
The numerical value that a2 is put in refitting, the second weighing device a13 draws is exactly the real-time density of drilling fluid；Ended by regulation during measurement
Whole device is adjusted and controls by valve 6, thus reaches satisfied measurement effect；
(3), after test, close centrifugal pump, pipeline before and after removing and with fresh water device is cleaned up, dry in case
Reuse.
Use measurement apparatus proposed by the invention, there is following distinguishing feature:
(1) directly measure fluid density by device, reduce the labor intensity that manpower is measured；
(2) liquid measured is all the drilling fluid returned out in real time from down-hole, it is possible to achieve measure fluid density in real time；
(3) drilling fluid different densities before and after degasification can be measured simultaneously, be beneficial to the pressure state grasping down-hole directly perceived；
(4) the circular base plate design bottom weighing section, make measurement result can not the impact of receptor inwall mud cake, directly
The most relevant with the density of drilling fluid.
(5) apparatus structure is simple, and parts are few, facilitate and carry out in actual production assembling, dismantling, and mobility is strong；
(6) internal structure design coordinates preferably, and measurement result is accurate.
In addition, it is necessary to explanation: the design utilizes centrifugal force field fast and efficiently to separate and high-speed stirring apparatus produces
The biggest velocity gradient carries out degasification to drilling fluid with gas, by promoting while forming high speed thin layer to increase liquid surface area
Bubbles burst, separation, recycling centrifugal force and gravity comprehensive function is made to carry out the gas in drilling fluid discharging degasification；Exist simultaneously
Before and after degasification, drilling fluid is carried out respectively density measure accurately.
The present invention is reasonable in design, can produce the centrifugal force field that proportion field of force great achievement hundred is the most thousands of, and huge shearing should
Power and velocity gradient so that it is there is concentration, classification, the multiple separation function such as sort.Utilize the feature of the gas-liquid separation of cyclone,
Consider the requirement measured in real time, tradition cyclone is improved, physical dimension, the configuration relation of whole device is carried out one
New design.Rotary blade bottom cyclone can ensure that measure at device c be all the degasification just returned out in well after
Drilling fluid density；The liquid of the cyclone owing to generally entering will have certain pressure, if using traditional adding with centrifugal pump
Pressure mode, then can produce impact to drilling fluid with gas density, i.e. density can raise, the drilling fluid measured at device a in the design
With atmosphere, eliminate adverse effect, the difference in height generation eddy flow institute of overfall and device b place entrance at reuse means a
The pressure differential needed.The structure design gone out with top is entered in bottom at device a, device c simultaneously, both can ensure that the liquid level in container
Highly, ensure that again stepout well liquid enter while before drilling fluid will be extruded, make that weighing device measures is all
Real-time drilling mud weight, because volume is fixed, liquid level is fixed, and density can draw in real time；Due to bottom weighing device not
The design fixing with container side wall, can make measurement will not affect measurement result because of foreign material such as container inner wall attachment mud cakes.
The above, be only the part preferred embodiment of the present invention, and any those of ordinary skill in the art all may profit
Revised or be revised as the technical scheme of equivalent by the technical scheme of above-mentioned elaboration.Therefore, according to the technology of the present invention
Any simple modification that scheme is carried out or substitute equivalents, belong to the greatest extent the scope of protection of present invention.
Claims (5)
1. a device for density before and after instant measurement air containing fluid degasification, is characterized in that: include buncher (a5), taper rotation
Stream chamber (a7), gassiness measurement apparatus (a14) and degasification measurement apparatus (a15), the upside of described taper vortex chamber (a7) is passed through
Pipeline connects gassiness measurement apparatus (a14), and downside connects degasification measurement apparatus (a15), described gassiness measurement apparatus by pipeline
(a14) the first gassiness fluid intake (a1), the first weighing device (a2), the first overfall (a3), the first weighing device it are provided with
(a2) bottom of gassiness measurement apparatus (a14) it is arranged on, on the first overfall (a3) is arranged in gassiness measurement apparatus (a14)
Portion；The top of described taper vortex chamber (a7) is provided with buncher (a5) and steam vent (a6), and buncher (a5) drives taper
The impeller (a9) of vortex chamber (a7) inner chamber rotates；Described degasification measurement apparatus (a15) be provided with deaeration fluid inlet (a11),
Three overfalls (a12), the second weighing device (a13), the second weighing device (a13) is arranged on the end of degasification measurement apparatus (a15)
Portion, the 3rd overfall (a12) is arranged on the middle and upper part of degasification measurement apparatus (a15).
Before and after instant measurement air containing fluid degasification the most according to claim 1, the device of density, is characterized in that: described cone
Helical flow path (a8) is distributed on the inwall of shape vortex chamber (a7), and described impeller (a9) is provided with angle of inclination.
Before and after instant measurement air containing fluid degasification the most according to claim 1, the device of density, is characterized in that: described taper
The middle and lower part of vortex chamber (a7) is provided with the second overfall (a10), and pipeline is connected to degasification by the second overfall (a10) and measures dress
Put the deaeration fluid inlet (a11) of (a15).
Before and after instant measurement air containing fluid degasification the most according to claim 1, the device of density, is characterized in that: described taper
The middle and upper part of vortex chamber (a7) is provided with the second gassiness fluid intake (a4), and pipeline is connected to by the second gassiness fluid intake (a4)
First overfall (a3) of gassiness measurement apparatus (a14).
5. the survey of the device of density before and after the instant measurement air containing fluid degasification used according to any one of claim 1-4
Metering method, is characterized in that comprising the following steps:
(1) mixture containing landwaste, gas, formation water etc. returned out from Oil/gas Well down-hole arrives slurry outlet through well head (1)
Groove (2), is filtered at filter screen (3) place solid phase landwaste drilling fluid by centrifugal pump (4), can be intuitively by Pressure gauge (5)
Observe the flow regime of drilling fluid, control to enter flow and the flowing speed of liquid in whole device by adjustable cut-off valve (6)
Degree, is connected with the gassiness fluid intake (a1) of measurement apparatus from stop valve (6) pipeline out, and carries out encapsulation process；Second
Overfall (a12) is connected with pipeline, and the drilling fluid measured drains into mud pit (9)；Three overfalls in measurement apparatus
The openst so that lower position can be flowed to after guaranteeing liquid flooding immediately, to prevent the liquid level in three containers higher than overflow
Mouthful, cause measurement inaccurate；Other do not survey drilling fluid through mud line flow to three except equipment (8) carry out desilting desanding degasification after return to
Mud pit (9), device has been connected with pipeline；
(2), test: be first turned on centrifugal pump (4) closedown stop valve and carry out pressure testing operation, until Pressure gauge (5) has reading
Number, slowly opens stop valve (6) when device (a) place has fluid to flow into, guarantees that Pressure gauge (5) continues there is pressure simultaneously, represent whole
In individual device, ruuning situation is normal, after the second overfall (a12) place has drilling fluid to flow out, fills with in showing whole device
Drilling fluid, the numerical value that the first weighing device (a2), the second weighing device (a13) draw is exactly the real-time density of drilling fluid；Measure
During by adjustable cut-off valve (6) whole device is adjusted and controls, thus reach satisfied measurement effect；
(3), after test, close centrifugal pump, pipeline before and after removing and with fresh water device is cleaned up, dry in case
Reuse.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810557536.1A CN108827824B (en) | 2016-06-24 | 2016-06-24 | Method for measuring density of gas-containing liquid |
| CN201610471078.0A CN106053291B (en) | 2016-06-24 | 2016-06-24 | It is a kind of it is instant measure air containing fluid degasification before and after density device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610471078.0A CN106053291B (en) | 2016-06-24 | 2016-06-24 | It is a kind of it is instant measure air containing fluid degasification before and after density device |
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| CN201810557536.1A Division CN108827824B (en) | 2016-06-24 | 2016-06-24 | Method for measuring density of gas-containing liquid |
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| CN201610471078.0A Active CN106053291B (en) | 2016-06-24 | 2016-06-24 | It is a kind of it is instant measure air containing fluid degasification before and after density device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425649A (en) * | 2018-03-28 | 2018-08-21 | 中国石油大学(北京) | Drilling fluid density is segmented regulation device |
| CN110220819A (en) * | 2019-06-11 | 2019-09-10 | 太原理工大学 | A method of based on tuning fork densimeter measurement direct flotation feed thickness |
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| CN108827824A (en) | 2018-11-16 |
| CN108827824B (en) | 2020-12-08 |
| CN106053291B (en) | 2018-10-19 |
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