CN106053291B - It is a kind of it is instant measure air containing fluid degasification before and after density device - Google Patents
It is a kind of it is instant measure air containing fluid degasification before and after density device Download PDFInfo
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- CN106053291B CN106053291B CN201610471078.0A CN201610471078A CN106053291B CN 106053291 B CN106053291 B CN 106053291B CN 201610471078 A CN201610471078 A CN 201610471078A CN 106053291 B CN106053291 B CN 106053291B
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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
- 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
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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
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Abstract
The present invention relates to a kind of devices of density before and after instant measurement air containing fluid degasification.Its technical solution is：Including speed regulating motor, taper vortex chamber, gassiness measuring device and degasification measuring device, the upside of the taper vortex chamber connects gassiness measuring device by pipeline, downside connects degasification measuring device by pipeline, the gassiness measuring device is equipped with the first weighing device, the top of the taper vortex chamber is equipped with speed regulating motor and gas vent, and degasification measuring device is equipped with the second weighing device.Advantageous effect is：With atmosphere, drilling fluid density before and after degasification accurately measure in real time, the eddy flow effect and impeller rotation that fluid itself is made full use of among two measuring devices realize fluid degasification, entrance designs and quick runner can ensure that the liquid measured is the drilling fluid just returned out out of well, and the present apparatus is simple in structure, easy to process, compared with existing density measuring equipment, with the features such as small, measurement is real-time, accurate, saving manpower.
Description
Technical field
The present invention relates to petroleum works related field, more particularly to density before and after a kind of instant measurement air containing fluid degasification
Device.
Background technology
The device of different densities is in target zone before and after the air containing fluid degasification returned out in the instant measurement oil/gas well of research
The well control safety of drilling is of great significance, in order to grasp the density case and liquid column hydrostatic pressure of drilling fluid in well at any time, really
Surely drilling fluid density reduces situation after mixed gas, and the reason of cause density to reduce（Other than mixing gas, if also have other ground
Layer liquid is mixed into circulating system）, the adjustment for subsequent well liquid provides foundation.It is traditionally by the way that a kind of density can only be measured
Device measures；And when actual job, most accurate measurement method is to remove region pair three first with densitometer by worker
The drilling fluid returned out in well carries out density measure before degasification, recycles degasification densitometer to carry out density measure after degasification, every time only
A kind of density can be measured, and can not continuously be measured in real time.This research is according to the needs of field operation, by dedicated unit to containing
Gas-liquid is de-gassed, and is carried out density measure to liquid respectively before and after degassing, can be reached and continuously be surveyed to two kinds of density
The effect of amount also carries out verification experimental verification analysis, to the density of drilling fluid in gassiness oil/gas well to the experimental prototype effect produced
Monitoring is of great significance.
Drilling fluid density measuring device is in the drillng operation of petroleum works related field using very extensive.Drillng operation
The middle liquid column hydrostatic pressure using drilling fluid balances the strata pressure of underground, when the fluids such as oil, gas and water enter drilling well in stratum
After liquid system, the density of drilling fluid will certainly be reduced, to cause the unbalance of borehole pressure, the accidents such as well kick, blowout occurs.It passes
The manual measurement method used of uniting is time-consuming and laborious, and other continuous density measuring devices are merely able to measure a kind of density,
The formation fluid situation being mixed in drilling fluid can not accurately be grasped.
From the point of view of disclosed document report and practical application, the instant measurement up to the present carried out based on above-mentioned thought is contained
The research of density has not been reported with application before and after gas-liquid degasification.This research is filled on the basis of following strictly basic objective law
Divide and give play to a subjective initiative, is explored according to existing theoretical and application, it is new in terms of density measure to open swirl-flow devices
Application field.
Invention content
The purpose of the present invention is aiming at drawbacks described above of the existing technology, and providing one kind, measurement air containing fluid removes immediately
The device of density before and after gas reaches in the case where formation fluid is unknown, and it is liquid-tight to measure the drilling well returned out out of oil/gas well in real time
Drilling fluid density after degree and degasification.
The device of density, technical solution are before and after a kind of instant measurement air containing fluid degasification that the present invention mentions：Including
Speed regulating motor（a5）, taper vortex chamber（a7）, gassiness measuring device（a14）With degasification measuring device（a15）, the described taper rotation
Flow chamber（a7）Upside pass through pipeline connect gassiness measuring device（a14）, downside connects degasification measuring device by pipeline
（a15）, the gassiness measuring device（a14）It is equipped with the first gassiness fluid inlet（a1）, the first weighing device（a2）, first overflow
Head piece（a3）, the first weighing device（a2）It is arranged in gassiness measuring device（a14）Bottom, the first overflow port（a3）Setting containing
Gas measuring device（a14）Middle and upper part；The taper vortex chamber（a7）Top be equipped with speed regulating motor（a5）And gas vent（a6）,
Speed regulating motor（a5）Drive taper vortex chamber（a7）The impeller of inner cavity（a9）Rotation；The degasification measuring device（a15）It is equipped with
Deaeration fluid inlet（a11）, third overflow port（a12）, the second weighing device（a13）, the second weighing device（a13）Setting except
Gas measuring device（a15）Bottom, third overflow port（a12）It is arranged in degasification measuring device（a15）Middle and upper part.
Above-mentioned taper vortex chamber（a7）Inner wall on helical flow path is distributed with（a8）, the impeller（a9）Equipped with inclination
Angle.
Above-mentioned taper vortex chamber（a7）Middle and lower part be equipped with the second overflow port（a10）, pipeline passes through the second overflow port（a10）
It is connected to degasification measuring device（a15）Deaeration fluid inlet（a11）.
Above-mentioned taper vortex chamber（a7）Middle and upper part be equipped with the second gassiness fluid inlet（a4）, pipeline is by second containing air-flow
Body entrance（a4）It is connected to gassiness measuring device（a14）The first overflow port（a3）.
The measurement method of the device of density before and after a kind of instant measurement air containing fluid degasification that the present invention mentions, including it is following
Step：
（One）The mixture containing landwaste, gas, water flooding etc. returned out from oil/gas well underground passes through well head（1）Reach mud
Outlet slot（2）, pass through centrifugal pump（4）Drilling fluid in strainer（3）Place filters out solid phase landwaste, passes through pressure gauge（5）It can be straight
The flow regime for seeing ground observation drilling fluid, passes through adjustable cut-off valve（6）To control flow and stream into liquid in whole device
Dynamic speed, from shut-off valve（6）The gassiness fluid inlet of pipeline and measuring device out（a1）Connection, and carry out encapsulation process；
Second overflow port（a12）It is connected with pipeline, and the drilling fluid measured is drained into mud pit（9）；Three in measuring device overflow
Head piece is open enough can flow to lower position immediately after ensuring liquid flooding, to prevent the liquid level in three containers to be higher than
Overflow port causes to measure inaccurate；Other are not surveyed drilling fluid and flow to three except equipment through mud line（8）It carries out after desilting desanding degasification
Return to mud pit（9）, device connect completion with pipeline；
（Two）, tested：It is first turned on centrifugal pump（4）It closes shut-off valve and carries out pressure testing operation, until pressure gauge（5）Have
Reading, slowly opens shut-off valve（6）Work as device（a）There is fluid inflow at place, while ensuring pressure gauge（5）Continue have pressure, indicates
Operating condition is normal in whole device, when the second overflow port（a12）After there is drilling fluid outflow at place, show to have filled in whole device
Fully-jewelled well liquid, the first weighing device（a2）, the second weighing device（a13）The numerical value obtained is exactly the real-time density of drilling fluid；It surveys
Pass through adjustable cut-off valve during amount（6）Whole device is adjusted and is controlled, to reach satisfied measurement effect；
（Three）, after experiment, close centrifugal pump, remove front and back pipeline and simultaneously device cleaned up with fresh water, is dried
In case reusing.
The beneficial effects of the invention are as follows：With atmosphere, the drilling fluid density before and after degasification is carried out real
When accurately measure, made full use of among two measuring devices fluid itself eddy flow effect and impeller rotation realize fluid remove
Gas, entrance design and quick runner can ensure that the liquid measured is the drilling fluid just returned out out of well, the present apparatus
It is simple in structure, it is easy to process, compared with existing density measuring equipment, have it is small, measure in real time, precisely, save manpower
The features such as.
Description of the drawings
Attached drawing 1 is the structural schematic diagram of the measuring device of the present invention；
Attached drawing 2 is the structural schematic diagram of the impeller in Fig. 1；
Attached drawing 3 is the implementing procedure figure of the present invention；
In upper figure：First gassiness fluid inlet a1, the first weighing device a2, the first overflow port a3, the second gassiness fluid enter
Mouth a4, speed regulating motor a5, gas vent a6, taper vortex chamber a7, helical flow path a8, impeller a9, the second overflow port a10, air-flow is removed
Body entrance a11, third overflow port a12, the second weighing device a13, gassiness measuring device a14, degasification measuring device a15；
Well head 1, slurry outlet slot 2, strainer 3, centrifugal pump 4, pressure gauge 5, shut-off valve 6, measuring device 7, three except equipment 8,
Mud pit 9, device a, device b, device c.
Specific implementation mode
In conjunction with attached drawing 1-3, the invention will be further described：
The device of density, technical solution are before and after a kind of instant measurement air containing fluid degasification that the present invention mentions：Including
Speed regulating motor a5, taper vortex chamber a7, gassiness measuring device a14 and degasification measuring device a15, the taper vortex chamber a7's
Upside connects gassiness measuring device a14 by pipeline, and downside connects degasification measuring device a15 by pipeline, and the gassiness measures
Device a14 is equipped with the first gassiness fluid inlet a1, the first weighing device a2, the first overflow port a3, and the first weighing device a2 is set
It sets in the bottom of gassiness measuring device a14, the first overflow port a3 is arranged in the middle and upper part of gassiness measuring device a14；The taper
The top of vortex chamber a7 is equipped with speed regulating motor a5 and gas vent a6, and speed regulating motor a5 drives the impeller a9 of the inner cavities taper vortex chamber a7
Rotation；The degasification measuring device a15 is equipped with deaeration fluid inlet a11, third overflow port a12, the second weighing device a13,
Second weighing device a13 is arranged in the bottom of degasification measuring device a15, and third overflow port a12 is arranged in degasification measuring device a15
Middle and upper part.
Helical flow path a8, the impeller a9 are distributed on the inner wall of above-mentioned taper vortex chamber a7 and is equipped with angle of inclination.
The middle and lower part of above-mentioned taper vortex chamber a7 is equipped with the second overflow port a10, and pipeline is connected to by the second overflow port a10
The deaeration fluid inlet a11 of degasification measuring device a15.
The middle and upper part of above-mentioned taper vortex chamber a7 is equipped with the second gassiness fluid inlet a4, and pipeline is entered by the second gassiness fluid
Mouth a4 is connected to the first overflow port a3 of gassiness measuring device a14.
The present invention is using traditional cyclone theory and its application, on the basis of traditional design principle, according to practical work
The needs of industry are improved, it is made to have the effect of real-time and accurate measurement, are reached while being measured the target of two kinds of density, devise
Device parameter and technological parameter.
It is liquid-tight can not to be carried out at the same time degasification both front and back drilling well for the existing density measurement device in the fields such as petroleum works
Degree accurately measures device immediately, and when actual needs is then that worker is measured respectively by densimeter, per about 5 points of minor tick
Clock can not accomplish the timely processing of the real-time judge and subsequent job to underground situation, and there are larger well control risks.The present invention
Device has well solved the above problem.
To achieve the above object, specific design is as follows by the present invention.Experimental rig main body is taper vortex chamber and weighing device.
Fluid enters vortex chamber after front measures by overflow port, deaerates by high-speed rotational, under the high speed rotation of impeller
So that the bubble in fluid is moved to surface and be crushed, the drilling fluid after degasification, which is then overflowed into rear weighing device, carries out secondary survey
Amount.
Pipe height in front of vortex chamber may insure that the fluid entered in vortex chamber has certain initial velocity, in height
It is de-gassed in fast eddy flow, the gas discharge hole discharge of the gas of abjection above vortex chamber.Former and later two weighing devices with
Atmosphere, it is ensured that the accuracy of measurement.High-speed rotating impeller has angle [alpha], and the removal to ensuring intracavity liquid bubble is broken
Broken and drilling fluid be sufficiently mixed all plays an important role, it is ensured that double measurement is all newest drilling fluid density.Weighing device
For drilling fluid entrance under, outlet can ensure that the drilling fluid in device is newest drilling fluid, the bottom of lower part in upper design
The height of plate to overflow port is fixed, and base areas is also fixed, so that it may be obtained with the weight weighed up according to weighing device
Fluid density.Overflow port in design is bigger, and has the larger angle that tilts down, and can thus make weighing device
After interior fluid level reaches overflow port position, extra fluid will flow to rear rapidly through overflow port, in anti-locking apparatus
Liquid level, which continues to increase, influences measurement accuracy.Gas discharge hole is reserved with fast connecting joint, connecting pipeline can incite somebody to action as needed
Gas leads to gas measurement device or leads to safe place and discharged.The circular base plate of weighing section bottom designs, and makes survey
The result of amount can not receptor inner wall mud cake influence, can obtain accurate drilling fluid density.
The measurement method of the device of density before and after a kind of instant measurement air containing fluid degasification that the present invention mentions, including it is following
Step：
（One）The mixture containing landwaste, gas, water flooding etc. returned out from oil/gas well underground reaches mud by well head 1 and goes out
Solid phase landwaste at strainer 3 is filtered out drilling fluid by centrifugal pump 4, brill can be intuitively observed by pressure gauge 5 by mouthful slot 2
The flow regime of well liquid controls flow and flowing velocity into liquid in whole device, from cut-off by adjustable cut-off valve 6
The gassiness fluid inlet a1 connections for the pipeline and measuring device that valve 6 comes out, and carry out encapsulation process；Second overflow port a12 and pipe
Line is connected, and the drilling fluid measured is drained into mud pit 9；Three overflow ports in measuring device are open enough to ensure liquid
Lower position can be flowed to after overflow immediately, to prevent the liquid level in three containers to be higher than overflow port, causes to measure inaccurate；Its
He do not survey drilling fluid through mud line flow to three carry out desilting desanding degasification except equipment 8 after return to mud pit 9, device connects with pipeline
Connect completion；
（Two）, tested：It is first turned on centrifugal pump 4 and closes shut-off valve progress pressure testing operation, until pressure gauge 5 has reading
Number, slowly open shut-off valve 6 has fluid inflow at device a, while ensuring that pressure gauge 5 continues to have pressure, indicates whole device
Interior operating condition is normal, after having drilling fluid outflow at the second overflow port a12, shows to fill with drilling fluid in whole device,
The numerical value that first weighing device a2, the second weighing device a13 are obtained is exactly the real-time density of drilling fluid；Pass through tune in measurement process
Section shut-off valve 6 is adjusted and controls to whole device, to reach satisfied measurement effect；
（Three）, after experiment, close centrifugal pump, remove front and back pipeline and simultaneously device cleaned up with fresh water, is dried
In case reusing.
Using measuring device proposed by the invention, there is following distinguishing feature：
（1）Fluid density is directly measured by device, reduces the labor intensity of manpower measurement；
（2）The liquid of measurement is all the drilling fluid returned out in real time from underground, may be implemented to measure fluid density in real time；
（3）Drilling fluid different densities before and after degasification can be measured simultaneously, be conducive to the intuitive pressure state for grasping underground；
（4）The circular base plate of weighing section bottom designs, and allows the influence of the result of measurement not receptor inner wall mud cake,
It is directly only related with the density of drilling fluid.
（5）Apparatus structure is simple, and component is few, facilitates in actual production and is assembled, dismantled, mobility is strong；
（6）Internal structure design cooperation is preferable, and measurement result is accurate.
In addition, it is necessary to which explanation is：The design is generated using the separation of fast and efficiently centrifugal force field and high-speed stirring apparatus
Prodigious velocity gradient carries out degasification to drilling fluid with gas, promotees while increasing liquid surface area by forming high speed thin layer
Make bubbles burst, separation, centrifugal force and gravity comprehensive function is recycled to carry out discharge degasification to the gas in drilling fluid；Exist simultaneously
Degasification is front and back to carry out accurately density measure respectively to drilling fluid.
Reasonable design of the present invention, can generate the even thousands of centrifugal force field of proportion field of force great achievement hundred, and huge shearing is answered
Power and velocity gradient such as make it have concentration, are classified, sort at a variety of separation functions.Using cyclone gas-liquid separation the characteristics of,
Consider the requirement measured in real time, traditional cyclone is improved, the structure size of whole device, configuration relation is carried out a kind of
New design.Cyclone bottom rotary blade can ensure to measure at device c be all the degasification just returned out in well after
Drilling fluid density；Since the liquid of the cyclone generally entered will have certain pressure, if being added with centrifugal pump using traditional
Pressure mode can then have an impact drilling fluid with gas density, i.e., density can increase, the drilling fluid measured at device a in the design
With atmosphere, adverse effect is eliminated, the difference in height generation eddy flow institute of overflow port and the places device b entrance at reuse means a
The pressure difference needed.The bottom at device a, device c both can ensure that the liquid level in container into the structure design gone out with top simultaneously
Highly, and the drilling fluid before capable of ensureing while stepout well liquid enters will be extruded, and make that weighing device measures is all
Real-time drilling mud weight, because volume is fixed, liquid level is fixed, and density can obtain in real time；Not due to weighing device bottom
With the fixed design of container side wall, measurement can be made not influence measurement result because container inner wall adheres to the sundries such as mud cake.
The above, is only the part preferred embodiment of the present invention, and any technical person familiar with the field may profit
Equivalent technical solution is changed or is revised as with the technical solution of above-mentioned elaboration.Therefore, technology according to the present invention
Any simple modification or substitute equivalents that scheme is carried out, belong to the greatest extent the scope of protection of present invention.
Claims (3)
1. the device of density before and after a kind of instant measurement air containing fluid degasification, it is characterized in that：Including speed regulating motor（a5）, taper rotation
Flow chamber（a7）, gassiness measuring device（a14）With degasification measuring device（a15）, the taper vortex chamber（a7）Upside pass through
Pipeline connects gassiness measuring device（a14）, downside connects degasification measuring device by pipeline（a15）, the gassiness measuring device
（a14）It is equipped with the first gassiness fluid inlet（a1）, the first weighing device（a2）, the first overflow port（a3）, the first weighing device
（a2）It is arranged in gassiness measuring device（a14）Bottom, the first overflow port（a3）It is arranged in gassiness measuring device（a14）In on
Portion；The taper vortex chamber（a7）Top be equipped with speed regulating motor（a5）And gas vent（a6）, speed regulating motor（a5）Drive taper
Vortex chamber（a7）The impeller of inner cavity（a9）Rotation；The degasification measuring device（a15）It is equipped with deaeration fluid inlet（a11）,
Three overflow ports（a12）, the second weighing device（a13）, the second weighing device（a13）It is arranged in degasification measuring device（a15）Bottom
Portion, third overflow port（a12）It is arranged in degasification measuring device（a15）Middle and upper part；
The taper vortex chamber（a7）Middle and lower part be equipped with the second overflow port（a10）, pipeline passes through the second overflow port（a10）Connection
To degasification measuring device（a15）Deaeration fluid inlet（a11）.
2. the device of density before and after instant measurement air containing fluid degasification according to claim 1, it is characterized in that：The cone
Shape vortex chamber（a7）Inner wall on helical flow path is distributed with（a8）, the impeller（a9）Equipped with angle of inclination.
3. the device of density before and after instant measurement air containing fluid degasification according to claim 1, it is characterized in that：The taper
Vortex chamber（a7）Middle and upper part be equipped with the second gassiness fluid inlet（a4）, pipeline passes through the second gassiness fluid inlet（a4）It is connected to
Gassiness measuring device（a14）The first overflow port（a3）.
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| 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 |
| CN201810557536.1A CN108827824B (en) | 2016-06-24 | 2016-06-24 | Method for measuring density of gas-containing liquid |
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| 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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| CN108425649B (en) * | 2018-03-28 | 2019-06-14 | 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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Also Published As
| Publication number | Publication date |
|---|---|
| CN108827824B (en) | 2020-12-08 |
| CN106053291A (en) | 2016-10-26 |
| CN108827824A (en) | 2018-11-16 |
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