CN113295578A - Online measurement device and method for viscosity of upward-returning drilling fluid - Google Patents
Online measurement device and method for viscosity of upward-returning drilling fluid Download PDFInfo
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- CN113295578A CN113295578A CN202110529149.9A CN202110529149A CN113295578A CN 113295578 A CN113295578 A CN 113295578A CN 202110529149 A CN202110529149 A CN 202110529149A CN 113295578 A CN113295578 A CN 113295578A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
- G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
- G01N11/08—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture by measuring pressure required to produce a known flow
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Abstract
The invention relates to an on-line measuring device and method for the viscosity of upward-returning drilling fluid, wherein the on-line measuring device for the viscosity of the drilling fluid comprises: the capillary tube is respectively connected with the sampling hose pump and the rear-stage mass flowmeter through a three-way block; the pressure sensor is arranged on the three-way block and is used for measuring the pressure of the drilling fluid entering and exiting the capillary tube on line; and a mass flowmeter at the rear stage of the capillary tube measures the temperature, density and flow parameters of the drilling fluid on line. In the drilling process, the returned drilling fluid is collected by a hose pump, pumped into a capillary tube and a rear-stage mass flowmeter, the pressure of the drilling fluid before and after the drilling fluid is pumped into the capillary tube, the density, the temperature and the flow parameters of the drilling fluid are measured on line, and the viscosity of the drilling fluid can be calculated according to the pressure, the temperature and the flow parameters. The invention can measure the viscosity of the drilling fluid on line, has simple structure, convenient installation and low cost, can replace the existing method for measuring the viscosity of the drilling fluid by a manual funnel and realizes the whole-process monitoring of the viscosity change of the drilling fluid in the drilling process.
Description
Technical Field
The invention relates to the technical field of geological logging engineering of an oil drilling site, in particular to an online measuring device and method for viscosity of upward-returning drilling fluid of the drilling site.
Background
In the drilling process, the rheological property of the drilling fluid can be more accurately and comprehensively obtained by monitoring the viscosity of the upward-returning drilling fluid on line, and the method has important significance on the drilling construction quality and the operation safety.
The viscosity of the upward-returning drilling fluid is an indispensable measurement item in the drilling process and is important for knowing the rheological property of the drilling fluid. At present, the manual measurement method is generally adopted in China, the viscosity information of the upward-returning drilling fluid can be obtained only at fixed time and fixed point, and the online monitoring can not be realized. The cost of the automatic tuning fork viscosity measurement and rotational viscosity measurement device and method is too high, the device and method have specific requirements on the measurement working condition of the drilling fluid, and the device and method are difficult to popularize and apply. Therefore, a drilling fluid viscosity online measuring device and method with simple structure and low cost are needed.
Disclosure of Invention
The invention aims to provide an on-line measuring device for the viscosity of upward-returning drilling fluid, which has a simple structure and low cost.
The invention also aims to provide an on-line measuring method for the viscosity of the upward-returning drilling fluid.
In order to achieve the above object, the invention provides an online measurement device for viscosity of up-flow drilling fluid, comprising:
the two ends of the capillary tube are respectively connected with a sampling hose pump and a rear-stage mass flowmeter through a three-way block;
a pressure sensor arranged on each three-way block for measuring the pressure P of the upward drilling fluid entering and exiting the capillary tube on line1And P2；
The mass flowmeter at the rear stage of the capillary tube measures the temperature T, the density, the rho and the flow Q parameter of the upward-returning drilling fluid on line;
the hose pump collects drilling fluid, the drilling fluid is pumped into the capillary tube and the mass flowmeter at the later stage, the pressure sensor on the flow path and the mass flowmeter measure and collect signal parameters in the process on line, and the real-time viscosity value of the drilling fluid is calculated.
In a preferred embodiment of the present invention, the capillary tube is a metal hard tube with a uniform inner diameter, the material of the metal hard tube is generally stainless steel, pure copper, and other corrosion-resistant materials, the inner diameter d is 4mm, and the length L is 1 m.
In a preferred embodiment of the invention, the hose pump collects the upward drilling fluid in the outlet buffer tank on line, the explosion-proof motor drives the hose pump, and the pump displacement is 1 l/min.
In a preferred embodiment of the invention, the caliber and the detection range of the mass flowmeter are correspondingly matched with those of the hose pump, and the detection range is 1 l/min.
In a preferred embodiment of the invention, each pressure sensor is mounted on each tee block that enters and exits the capillary tube and measures the drilling fluid pressure being pumped into and out of the capillary tube, respectively, to calculate the drilling fluid viscosity.
The on-line measurement method for the viscosity of the upward-returning drilling fluid in the second aspect of the invention is to sample the upward-returning drilling fluid on line in the drilling process and measure the pressure P before and after the upward-returning drilling fluid flows through the capillary tube1And P2And flow rate Q, densityRho related information is combined with parameters such as the inner diameter d and the length L of the capillary tube, and the real-time viscosity value of the drilling fluid can be calculated, wherein the specific calculation formula is as follows:
Drawings
Fig. 1 is a schematic structural diagram of an online drilling fluid viscosity measuring device according to the present invention.
Detailed Description
The technical content, constructional features, achieved objects and effects of the invention are described in detail below by means of a preferred embodiment in connection with fig. 1.
As shown in fig. 1, the online measuring device for the viscosity of the drilling fluid provided by the present invention comprises a capillary tube 1, a three-way block 21 connecting the capillary tube 1 and a hose pump 4 (not specifically shown in the figure), a three-way block 22 connecting the capillary tube 1 and a subsequent mass flowmeter 5 (not specifically shown in the figure), a pressure sensor 31 for measuring the pumping pressure, and a pressure sensor 32 for measuring the outflow pressure of the capillary tube 1.
In a preferred embodiment of the present invention, the capillary 1 is made of stainless steel, and has an inner diameter d of 4mm and a length L of 1 m.
In the preferred embodiment of the invention, the hose pump 4 collects the returned drilling fluid in the outlet buffer tank on line, the explosion-proof motor drives the outlet buffer tank, and the pump displacement is 1 l/min.
In the preferred embodiment of the invention, the caliber and the detection range of the mass flowmeter 5 are correspondingly matched with the hose pump 4, and the detection range is 1 l/min.
In the preferred embodiment of the invention, pressure transducers 31 and 32 are mounted on the tee blocks 21 and 22, respectively, of the inlet and outlet capillary 1, respectively, to measure the drilling fluid pressure P pumped into and out of the capillary, respectively1And P2For calculating the drilling fluid viscosity.
The on-line measurement device for the viscosity of the drilling fluid of the present invention further comprises necessary mounting brackets and accessories for the elevated tank 2 and the vibrating screen, which are well known in the art and will not be described in detail herein.
The online measurement method for the viscosity of the drilling fluid samples the upward-returning drilling fluid on line in the drilling process, and measures the pressure P before and after the upward-returning drilling fluid flows through the capillary 11And P2And related information such as flow Q, density rho and the like, and parameters such as the inner diameter d and the length L of the capillary tube are combined. According to the calculation formula of the formula 1, the real-time viscosity value of the drilling fluid can be calculated;
wherein mu is the viscosity of the drilling fluid, d is the inner diameter of the capillary 1, Q is the mass flow of the drilling fluid, ρ is the density of the drilling fluid, L is the length of the capillary 1, and P is1Is the inlet pressure, P, of the capillary 12Is the pressure at the outlet of the capillary 1.
In conclusion, the device and the method for online measuring the viscosity of the drilling fluid have the advantages of simple structure and low cost, and can realize online measurement of the viscosity of the drilling fluid.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (7)
1. An on-line measurement device for the viscosity of upward drilling fluid is characterized by comprising:
the two ends of the capillary tube are respectively connected with a sampling hose pump and a rear-stage mass flowmeter through a three-way block;
a pressure sensor arranged on each three-way block for measuring the pressure P of the upward drilling fluid entering and exiting the capillary tube on line1And P2；
The mass flowmeter at the rear stage of the capillary tube measures the temperature T, the density, the rho and the flow Q parameter of the upward-returning drilling fluid on line;
the hose pump collects drilling fluid, the drilling fluid is pumped into the capillary tube and the mass flowmeter at the later stage, the pressure sensor on the flow path and the mass flowmeter measure and collect signal parameters in the process on line, and the real-time viscosity value of the drilling fluid is calculated.
2. The on-line measuring device for the viscosity of the upward drilling fluid of claim 1, wherein the capillary tube is a metal hard tube with a uniform inner diameter, the inner diameter d is 4mm, and the length L is 1 m.
3. The on-line measuring device for the viscosity of the upward drilling fluid according to claim 2, wherein the capillary is made of stainless steel or pure copper. ,
4. the on-line measuring device for the viscosity of the upward drilling fluid as claimed in claim 2, wherein the hose pump collects the upward drilling fluid in the outlet buffer tank on line and is driven by an explosion-proof motor, and the pump displacement is 1 l/min.
5. The on-line measurement device for the viscosity of the upward drilling fluid of claim 4, wherein the caliber and the detection range of the mass flowmeter are correspondingly matched with the hose pump, and the measurement range is 1 l/min.
6. The on-line measurement device for the viscosity of the upward drilling fluid as claimed in claim 2, wherein each pressure sensor is installed on each tee block for entering and exiting the capillary tube, and measures the drilling fluid pressure entering and exiting the capillary tube respectively, so as to calculate the viscosity of the drilling fluid.
7. The on-line measurement method of viscosity of upward-returning drilling fluid is characterized by that in the course of drilling the upward-returning drilling fluid is sampled on line, and the pressure P before and after it is passed through the capillary tube is measured1And P2And the flow Q, density ρ are relatedInformation is combined with parameters such as the inner diameter d and the length L of the capillary tube, and the real-time viscosity value of the drilling fluid can be calculated, wherein the specific calculation formula is as follows:
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110529149.9A CN113295578A (en) | 2021-05-14 | 2021-05-14 | Online measurement device and method for viscosity of upward-returning drilling fluid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110529149.9A CN113295578A (en) | 2021-05-14 | 2021-05-14 | Online measurement device and method for viscosity of upward-returning drilling fluid |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085960U (en) * | 1991-03-06 | 1991-10-02 | 西南石油学院 | Capillary rheometer |
| CN202216888U (en) * | 2011-05-08 | 2012-05-09 | 中国石油化工集团公司 | Pipe type rheometer for drilling fluid |
| CN103226086A (en) * | 2013-04-02 | 2013-07-31 | 中国石油天然气股份有限公司 | Online high-temperature high-pressure viscosity rapid measuring device for rock core displacement experiment |
| WO2015191091A1 (en) * | 2014-06-13 | 2015-12-17 | National Oilwell Varco, L.P. | Method and apparatus for measuring drilling fluid properties |
| CN108872018A (en) * | 2018-08-30 | 2018-11-23 | 杨钧程 | At the uniform velocity capillary viscometer and its Viscosity Measurement Methods |
| CN110243912A (en) * | 2019-07-10 | 2019-09-17 | 上海神开石油科技有限公司 | A Drilling Fluid Online Ion Sensor and Ion Concentration Measurement Method |
| CN110907312A (en) * | 2019-12-26 | 2020-03-24 | 中国石油大学(华东) | Novel drilling fluid rheological property on-line measuring device |
-
2021
- 2021-05-14 CN CN202110529149.9A patent/CN113295578A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085960U (en) * | 1991-03-06 | 1991-10-02 | 西南石油学院 | Capillary rheometer |
| CN202216888U (en) * | 2011-05-08 | 2012-05-09 | 中国石油化工集团公司 | Pipe type rheometer for drilling fluid |
| CN103226086A (en) * | 2013-04-02 | 2013-07-31 | 中国石油天然气股份有限公司 | Online high-temperature high-pressure viscosity rapid measuring device for rock core displacement experiment |
| WO2015191091A1 (en) * | 2014-06-13 | 2015-12-17 | National Oilwell Varco, L.P. | Method and apparatus for measuring drilling fluid properties |
| CN108872018A (en) * | 2018-08-30 | 2018-11-23 | 杨钧程 | At the uniform velocity capillary viscometer and its Viscosity Measurement Methods |
| CN110243912A (en) * | 2019-07-10 | 2019-09-17 | 上海神开石油科技有限公司 | A Drilling Fluid Online Ion Sensor and Ion Concentration Measurement Method |
| CN110907312A (en) * | 2019-12-26 | 2020-03-24 | 中国石油大学(华东) | Novel drilling fluid rheological property on-line measuring device |
Non-Patent Citations (1)
| Title |
|---|
| 章新友: "《中医药物理实验》", 30 June 2017 * |
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