CN109799165A - The double pressure vibration tubular type drilling fluid density on-line measurement instruments of thermostatic type - Google Patents
The double pressure vibration tubular type drilling fluid density on-line measurement instruments of thermostatic type Download PDFInfo
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- CN109799165A CN109799165A CN201711148383.7A CN201711148383A CN109799165A CN 109799165 A CN109799165 A CN 109799165A CN 201711148383 A CN201711148383 A CN 201711148383A CN 109799165 A CN109799165 A CN 109799165A
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Abstract
The double pressure vibration tubular type drilling fluid density on-line measurement instruments of thermostatic type and measurement method, are related to fluid density fields of measurement.Screw pump, coriolis mass flowmeters I and counterbalance valve I, coriolis mass flowmeters II and counterbalance valve II are sequentially connected with pipeline, on the pipeline the front and back for being attempted by counterbalance valve I respectively pressure sensor I and pressure sensor II.Measurement method is that two coriolis mass flowmeters are installed in semiconductor thermostatic and temperature container, the pressure instantaneous value for measuring coriolis mass flowmeters I and coriolis mass flowmeters II respectively with pressure sensor I and pressure sensor II measures the instantaneous value of the density under different pressures with coriolis mass flowmeters I and II.Then the solid-liquid phase density of drilling fluid and the instantaneous value of standard gas liquid ratio are calculated according to measured value.The advantages of invention is that data are accurate, and measuring speed is fast, the real-time online measuring suitable for drilling fluid density.
Description
Technical field
The invention belongs to fluid density field of measuring technique more particularly to a kind of drilling fluid with gas density real-time online measurings
The double pressure vibration tubular type drilling fluid density on-line measurement instruments of thermostatic type.
Background technique
In Process of Oil Well Drilling, the measurement of drilling fluid density is a highly important job.Real-time and accurately measure
Drilling fluid density prevents the down hole problems such as well kick, leakage for carrying out fine wellbore construction under special geologic condition
Occur, it appears be even more important.
The density measure of fluid mainly has differential pressure type, floatage-type, oscillatory type, Weighing type and gamma-rays formula etc. by principle point
A variety of, in the past, scene uses always static pressure differential density measuring method, but this method measured value it is representative it is poor, by drilling fluid
Thixotropic influence etc., density measure error is larger.In recent years, tubular vibration-type densitometer is introduced into the survey of live drilling fluid density
Amount.
The working principle of tubular vibration-type densitometer is: when object is excited and is vibrated, vibration frequency or amplitude and object
The quality of body itself is related.If being filled with the fluid sample of certain volume in object, the variation of vibration frequency just reflects
The quality or density of the sample fluid of certain volume.
2010, vibrating tube densimeter was introduced live drilling fluid density by Drilling Tech. Inst., Shengli Petroleum Administration
It in on-line monitoring, finds in the application, is easy to be mixed into one since drilling fluid has biggish viscosity and shear force when so stirring
Fixed gas forms the drilling fluid for containing certain bubble, therefore the density refractory of drilling fluid is to measure accurate and stablize.In 2011
202157769 U of state patent CN " a kind of drilling fluid density pressurize on-line measurement device " proposes a solution, by
Vibrating tube outlet increases counterbalance valve and pressure gauge, to adjust the different pressures of vibrating tube, to measure the drilling well under different pressures
Liquid density.
Although 202157769 U of patent CN improves the precision of drilling fluid density measurement, but still not can solve drilling well
The accuracy and real-time of liquid density measure mainly have following 2 reasons: although reducing one is improving pressure bubble volume,
The influence that some bubbles measure drilling fluid density is eliminated, but still its influence cannot be completely eliminated, it is certain to reach
Density measure accuracy, the pressure for needing to improve is very big, this will increase very big difficulty to the performance selection of pump；The second is must
Counterbalance valve must be constantly adjusted, to change measurement pressure, thus can not measure the density under two pressure in the same time, from
And lose the performance of real-time measurement.Chinese Patent Application No. 2013105141389 provides a kind of double pressure vibration pipe brills thus
Well liquid density on-line measurement instrument has measured the density and compressible phase of incompressible phase by the density under different pressures
Volume content solves the accuracy and real-time of the density measure of drilling fluid with gas, but is sent out by the application of a period of time
It is existing, the drilling fluid come is recycled due to being influenced by formation temperature from shaft bottom, the temperature of drilling fluid is much higher than environment temperature,
Which results in the difference of the temperature of two vibrating tube densimeters, cause the error of measurement.
Summary of the invention
The purpose of the present invention is to existing double pressure vibration tubular type drilling fluid density measuring devices, there is due to temperature
Degree variation causes the accuracy of drilling fluid density measurement, is unfavorable for the problem of construction of controlled pressure drilling, proposes a kind of raising measurement
Data are accurate, are conducive to the double pressure vibration pipes of thermostatic type that the real density under the different temperatures pressure of aerated mud underground calculates
Formula drilling fluid density on-line measurement instrument.
Technical solution of the present invention:
The double pressure vibration tubular type drilling fluid density on-line measurement instruments of thermostatic type, including screw pump, vibrating tube densimeter, pressure
Force snesor and counterbalance valve, in which: by screw pump, vibrating tube densimeter I and counterbalance valve I, vibrating tube densimeter II and counterbalance valve
II is sequentially connected by pipeline, pressure sensor I and pressure sensor II is attempted by respectively the forward and backward pipeline of counterbalance valve I
On.
The vibrating tube densimeter is coriolis mass flowmeters.
According to the measurement method of the double pressure vibration tubular type drilling fluid density on-line measurement instruments of aforementioned thermostatic type: two are shaken
Dynamic tube densimeter is installed in semiconductor thermostatic and temperature container, and the temperature of two vibrating tube densimeters is controlled with semiconductor thermostatic and temperature container
Degree adjusts the pressure of vibrating tube densimeter I and II with counterbalance valve I and counterbalance valve II, with pressure sensor I and pressure sensor II
The pressure instantaneous value of vibrating tube densimeter I and vibrating tube densimeter II are measured respectively, it is close with vibrating tube densimeter I and vibrating tube
The instantaneous value of fluid density under degree meter II measurement different pressures.
The measurement method of the double pressure vibration tubular type drilling fluid density on-line measurement instruments of the thermostatic type also resides in:
The temperature for adjusting temperature extremely the surveyed drilling fluid of semiconductor thermostatic and temperature container, in certain continuous circulation vessel of flow
Drilling fluid, adjust counterbalance valve I and counterbalance valve II, making the pressure of two vibrating tube densimeters I and II is respectively P1And P2, measurement
The density value ρ of two vibrating tube densimeters I and II1And ρ2；
According to P1、P2、ρ1、ρ2The solid liquid phase density p of drilling fluid is calculated with the instantaneous value of drilling fluid temperature TmInstantaneous value:
With the gas-liquid volume ratio value under standard state:
These P of METHOD FOR CONTINUOUS DETERMINATION1、P2、ρ1、ρ2With the instantaneous value of T, real-time measurement simultaneously continuously records drilling fluid solid-liquid phase density
With the change procedure of the gas-liquid volume ratio under the status of criterion, the automatic online detection of aerated mud density is realized, and calculate
Drilling fluid with gas density under different temperatures T and pressure P:
In formula: P1The pressure that-pressure sensor I is shown；P2The pressure that-pressure sensor II is shown；
T1The temperature of-constant temperature system setting； T0Temperature under-standard state；
ρ1The density of-vibrating tube densimeter I test；ρ2The density of-vibrating tube densimeter II test；
VmThe solid-liquid phase volume of-drilling fluid； ρmThe solid-liquid phase density of-drilling fluid；
The aerated mud density of ρ-arbitrary temp (T) and pressure (P)；
vm- drilling fluid solid-liquid phase volume；vgGas volume under-arbitrary temp pressure；
vg0Gas volume under-standard state；p0- standard atmospheric pressure；
Pressure locating for p-drilling fluid；T-drilling fluid temperature.
The effect of invention: the drilling well under two kinds of different pressures can be measured simultaneously at a constant temperature using the instrumentation and testing method
Liquid density, and be modified according to gas equation, drilling fluid density measurement error caused by temperature change is eliminated, brill is improved
The accuracy of well liquid density measure, the favorably real-time online measuring of drilling fluid density on site.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the double pressure vibration tubular type drilling fluid density on-line measurement instruments of thermostatic type；
In figure, 1 is screw pump, and 2 be coriolis mass flowmeters I, and 3 be pressure sensor I, and 4 be counterbalance valve I, and 5 be pressure
Force snesor II, 6 be coriolis mass flowmeters II, and 7 be counterbalance valve II, and 8 be semiconductor thermostatic and temperature container.
Specific embodiment
Embodiments of the present invention are described in detail below in conjunction with attached drawing 1.
The inlet tube of screw pump 1 is connected with drilling well liquid container, screw pump 1 and coriolis mass flowmeters I2, back pressure
Valve I 4, coriolis mass flowmeters II6, counterbalance valve II7 are connected by pipeline, II 5 points of pressure sensor I 3, pressure sensor
It is not connected in parallel on the pipeline of counterbalance valve I4 upstream and downstream, coriolis mass flowmeters I2 and coriolis mass flowmeters
II6 is mounted in semiconductor thermostatic and temperature container 8, is formed the double pressure vibration tubular type drilling fluid densities of thermostatic type according to the present invention and is existed
Line measuring instrument.
The method and step that the present invention uses: drilling fluid is 1. pumped into pipeline by screw pump, flows through Coriolis mass and flow
2. meter, pressure sensor and counterbalance valve are read the temperature T of drilling fluid by coriolis mass flowmeters I1；3. adjusting semiconductor
The temperature of thermostatic container is to temperature T1, adjusting counterbalance valve I and II can produce two different size of pressure P1And P2；Pass through again
Coriolis mass flowmeters I and II measure the fluid density value ρ under different pressures1And ρ2；Finally according to gas equation to brill
Well liquid density is modified, and true drilling fluid density is calculated.
Makeover process is as follows:
In pressure P1Under, the density of fluid are as follows:
In pressure P2Under, the density of fluid are as follows:
At the same temperature, according to gas equation: P1Vg1/T1=P2Vg2/T1=P0Vg0/T0
In formula: P1The pressure that-pressure sensor I is shown；P2The pressure that pressure sensor II is shown；
T1The temperature of-constant temperature system setting； T0Temperature under-standard state；
ρ1The density of-vibrating tube I test； ρ2The density of-vibrating tube II test；
VmThe solid-liquid phase volume of-drilling fluid； ρmThe solid-liquid phase density of-drilling fluid；
Vg1- pressure is P1When, invade the gas volume in drilling fluid；
Vg2- pressure is P2When, invade the gas volume in drilling fluid；
It obtains:
Formula (3) and (4) are brought into respectively in (1) and (2), can be obtained:
It is obtained by formula (5) and (6):
Ignore gaseous mass, (7) generation gone back into (5) and obtains revised drilling fluid solid-liquid phase density:
Aerated mud density under different temperatures T different pressures P:
In formula: the aerated mud density of ρ-arbitrary temp (T) and pressure (P)；
vm- drilling fluid solid-liquid phase volume；vgGas volume under-arbitrary temp pressure；
vg0Gas volume under-standard state；p0- standard atmospheric pressure；
T0- normal temperature；Pressure locating for p-drilling fluid；T-drilling fluid temperature.
Continuous measurement P1、P2、ρ1、ρ2With the instantaneous value and Continuous plus drilling fluid solid-liquid phase density and standard gas-liquid of temperature T
The instantaneous value of volume ratio, can real-time measurement and the continuously solid-liquid phase density of record drilling well density and the variation of standard gas-liquid volume ratio
Process realizes the automatic online detection of drilling fluid density.
Application example 1:
The drilling fluid containing certain gas is prepared, the temperature of adjusting semiconductor thermostatic and temperature container first is the drilling fluid of 313K
Temperature adjusts counterbalance valve I and counterbalance valve II, and pressure sensor I is made to show pressure 0.200MPa, pressure sensor II display pressure
Power is 0.300MPa.Then drilling fluid is pumped by screw pump, flows through coriolis mass flowmeters I and Coriolis mass flow
Meter II records the two density size, ρ1=1.345 g/cm3,ρ1=1.355g/cm3。
Data measured is substituted into formula (8), obtains revised drilling fluid solid-liquid phase density:
Therefore, the drilling fluid solid-liquid phase density after eliminating aeration is 1.375g/cm3。
It substitutes into formula (7), obtains the gas-liquid volume ratio of the drilling fluid under standard state:
Claims (4)
1. the double pressure vibration tubular type drilling fluid density on-line measurement instruments of thermostatic type, including screw pump, vibrating tube densimeter, pressure
Sensor and counterbalance valve, it is characterised in that: by screw pump, vibrating tube densimeter I and counterbalance valve I, vibrating tube densimeter II and back
Pressure valve II is sequentially connected by pipeline, and pressure sensor I and pressure sensor II are attempted by the forward and backward of counterbalance valve I respectively
On pipeline.
2. the double pressure vibration tubular type drilling fluid density on-line measurement instruments of thermostatic type according to claim 1, it is characterised in that:
Vibrating tube densimeter is coriolis mass flowmeters.
3. the measurement side of the double pressure vibration tubular type drilling fluid density on-line measurement instruments of thermostatic type as described in claim 1 or 2
Method, it is characterised in that: two vibrating tube densimeters are installed in semiconductor thermostatic and temperature container, and with semiconductor thermostatic and temperature container control
The temperature for making two vibrating tube densimeters adjusts the pressure of vibrating tube densimeter I and II with counterbalance valve I and counterbalance valve II, with pressure
Force snesor I and pressure sensor II measures the pressure instantaneous value of vibrating tube densimeter I and vibrating tube densimeter II respectively, with vibration
The instantaneous value of fluid density under dynamic tube densimeter I and vibrating tube densimeter II measurement different pressures.
4. the measurement method of the double pressure vibration tubular type drilling fluid density on-line measurement instruments of thermostatic type according to claim 3,
It is characterized by:
The temperature of semiconductor thermostatic and temperature container is adjusted to the temperature of surveyed drilling fluid, with the brill in certain continuous circulation vessel of flow
Well liquid adjusts counterbalance valve I and counterbalance valve II, and making the pressure of two vibrating tube densimeters I and II is respectively P1And P2, measure two
The density value ρ of vibrating tube densimeter I and II1And ρ2；
According to P1、P2、ρ1、ρ2The solid liquid phase density p of drilling fluid is calculated with the instantaneous value of drilling fluid temperature TmInstantaneous value:
With the gas-liquid volume ratio value under standard state:
These P of METHOD FOR CONTINUOUS DETERMINATION1、P2、ρ1、ρ2With the instantaneous value of T, real-time measurement simultaneously continuously records drilling fluid solid-liquid phase density and standard
The change procedure of gas-liquid volume ratio under situation, realizes the automatic online detection of aerated mud density, and calculates not equality of temperature
Spend the drilling fluid with gas density under T and pressure P:
In formula: P1The pressure that-pressure sensor I is shown；P2The pressure that-pressure sensor II is shown；
T1The temperature of-constant temperature system setting；T0Temperature under-standard state；
ρ1The density of-vibrating tube densimeter I test；ρ2The density of-vibrating tube densimeter II test；
VmThe solid-liquid phase volume of-drilling fluid；ρmThe solid-liquid phase density of-drilling fluid；
The aerated mud density of ρ-arbitrary temp (T) and pressure (P)；
vm- drilling fluid solid-liquid phase volume；vgGas volume under-arbitrary temp pressure；
vg0Gas volume under-standard state；p0- standard atmospheric pressure；
Pressure locating for p-drilling fluid；T-drilling fluid temperature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711148383.7A CN109799165A (en) | 2017-11-17 | 2017-11-17 | The double pressure vibration tubular type drilling fluid density on-line measurement instruments of thermostatic type |
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| CN201711148383.7A CN109799165A (en) | 2017-11-17 | 2017-11-17 | The double pressure vibration tubular type drilling fluid density on-line measurement instruments of thermostatic type |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735510A (en) * | 2020-06-09 | 2020-10-02 | 浙江恒澜科技有限公司 | Device and method for online detection of slurry solid content based on series connection of mass flow controllers |
| WO2021031217A1 (en) * | 2019-08-22 | 2021-02-25 | 无锡洋湃科技有限公司 | Wet gas flow measurement method based on coriolis mass flowmeter, and apparatus therefor |
| CN112903522A (en) * | 2021-02-01 | 2021-06-04 | 烟台杰瑞石油装备技术有限公司 | Fluid density measuring method and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5295084A (en) * | 1991-10-08 | 1994-03-15 | Micromotion, Inc. | Vibrating tube densimeter |
| CN101556232A (en) * | 2008-04-09 | 2009-10-14 | 托玛斯·艾伦 | Method for measuring and calculating absolute density of well-fixing cement |
| CN202157769U (en) * | 2011-05-08 | 2012-03-07 | 中国石油化工集团公司 | Pressurized online measuring device for density of drilling fluid |
| CN104568651A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | On-line double-pressure vibrating tube type drilling fluid density measurement instrument and calculating method |
| CN206440570U (en) * | 2016-12-23 | 2017-08-25 | 中石化石油工程技术服务有限公司 | The double pressure vibration tubular type drilling fluid density on-line measurement instrument of thermostatic type |
| CN108240948A (en) * | 2016-12-23 | 2018-07-03 | 中石化石油工程技术服务有限公司 | The double pressure vibration tubular type drilling fluid density on-line measurement instrument of thermostatic type and measuring method |
-
2017
- 2017-11-17 CN CN201711148383.7A patent/CN109799165A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5295084A (en) * | 1991-10-08 | 1994-03-15 | Micromotion, Inc. | Vibrating tube densimeter |
| CN101556232A (en) * | 2008-04-09 | 2009-10-14 | 托玛斯·艾伦 | Method for measuring and calculating absolute density of well-fixing cement |
| CN202157769U (en) * | 2011-05-08 | 2012-03-07 | 中国石油化工集团公司 | Pressurized online measuring device for density of drilling fluid |
| CN104568651A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | On-line double-pressure vibrating tube type drilling fluid density measurement instrument and calculating method |
| CN206440570U (en) * | 2016-12-23 | 2017-08-25 | 中石化石油工程技术服务有限公司 | The double pressure vibration tubular type drilling fluid density on-line measurement instrument of thermostatic type |
| CN108240948A (en) * | 2016-12-23 | 2018-07-03 | 中石化石油工程技术服务有限公司 | The double pressure vibration tubular type drilling fluid density on-line measurement instrument of thermostatic type and measuring method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021031217A1 (en) * | 2019-08-22 | 2021-02-25 | 无锡洋湃科技有限公司 | Wet gas flow measurement method based on coriolis mass flowmeter, and apparatus therefor |
| CN111735510A (en) * | 2020-06-09 | 2020-10-02 | 浙江恒澜科技有限公司 | Device and method for online detection of slurry solid content based on series connection of mass flow controllers |
| CN112903522A (en) * | 2021-02-01 | 2021-06-04 | 烟台杰瑞石油装备技术有限公司 | Fluid density measuring method and apparatus |
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