CN103090919A - Automatic compensation target type flowmeter and measurement and control method thereof - Google Patents
Automatic compensation target type flowmeter and measurement and control method thereof Download PDFInfo
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- CN103090919A CN103090919A CN 201110379769 CN201110379769A CN103090919A CN 103090919 A CN103090919 A CN 103090919A CN 201110379769 CN201110379769 CN 201110379769 CN 201110379769 A CN201110379769 A CN 201110379769A CN 103090919 A CN103090919 A CN 103090919A
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Abstract
The invention discloses an automatic compensation target type flowmeter which mainly comprises a pipeline (2) and a swing rod (3) of which one end penetrates through the pipeline (2), wherein a target (1) is arranged at one end, which is positioned inside the pipeline (2), of the swing rod (3); and an electromagnetic control element (4) is arranged at the other end of the swing rod (3). The invention also discloses a measurement and control method for the automatic compensation target type flowmeter. The linear relation between output electric quantity and measured flow is guaranteed, and relatively high dynamic property and relatively high test precision are achieved.
Description
Technical field
The present invention relates to a kind of auto-compensation target type meter and investigating method thereof.
Background technology
In the each task of petroleum prospecting and oil-field development, drilling well plays a very important role.In drilling process, the bottom rock rear landwaste that produces that is broken is carried on ground by circulating mud, and this process is called well-flushing.Well-flushing is to realize by circulating mud as the important step in drilling process, therefore there is the people mud to be likened to the blood of drilling engineering.
Drilling Mud has become the important component part of modern oil/gas drilling engineering.A large amount of research data show that mud has carry and suspend landwaste, stabilizing borehole and equilibrium strata pressure, Cooling and Lubricator drill bit, drilling tool and transmission hydrodynamic force etc. and is directly connected to drilling cost in drilling process both at home and abroad, even have influence on the vital role of drilling well success or failure.Drilling practice also proves, the quality of mud property, and whether use, maintenance and treatment measures are appropriate, directly affect the stability of the borehole wall, and the stability of the borehole wall is related to admission, bit speed, quality and the cost of geologic information, so people often liken mud to the blood of drilling engineering.Therefore, the mud property parameter is carried out real-time monitoring and just seem very important.
Drilling fluid refers to satisfy with its several functions in the oil/gas drilling process general name of the various circulating fluid of drilling well need of work.Drilling fluid claims again drilling mud or referred to as mud (Muds), this paper with drilling fluid referred to as mud.Mud has the effects such as carry and suspend landwaste, stabilizing borehole and equilibrium strata pressure, Cooling and Lubricator drill bit, drilling tool and transmission hydrodynamic force in drilling process.
Nowadays Drilling Mud has become the important component part of oil/gas drilling engineering.Drilling practice shows, the quality of mud property is used, the maintenance measure appropriate direct stability that affects the borehole wall whether, and the stability of the borehole wall is related to admission, bit speed, quality and the cost of geologic information, so people often liken mud to the blood of drilling engineering.
Over nearly 40 years, indoor and industry spot experimental study proves in a large number both at home and abroad, and in the ordinary course of things, the solid load increase can cause the increase of density, viscosity, shear force, mud cake thickness and the sand cut of mud, the decline of fluid loss.And the variation of these performances will obviously reduce drilling speed, increases the drill bit consumption, even might increase the situations such as leakage, gas cut, bit freezing, makes drilling cost significantly rise.
Mud refers to satisfy with its several functions in the oil/gas drilling process general name of the various circulating fluid of drilling well need of work.The circulation of mud is kept by steam piano.The high-pressure slurry of discharging from steam piano through ground high pressure pipe joint, standpipe, rotary hose, water swivel, square kelly, drilling rod, drill collar to drill bit, from the bit nozzle ejection, with bottom-hole cleaning and cutting carring.And then upwards flow along the annular space that drill string and the borehole wall (or sleeve pipe) form, flow into suction pit by vent line arriving ground, then return to upper pool after various solid phase opertaing devices are processed, the Recycling of the most laggard people's steam piano.The various pipe fittings of mud stream warp, equipment have consisted of a whole set of mud circulating system.
In the each task of petroleum prospecting and oil-field development, drilling well plays a very important role.In drilling process, the bottom rock rear landwaste that produces that is broken is carried on ground by circulating mud, and this process is called well-flushing.Well-flushing is to realize by circulating mud as the important step in drilling process, therefore there is the people mud to be likened to the blood of drilling engineering.
Mud refers to satisfy with its several functions in the oil/gas drilling process general name of the various circulating fluid of drilling well need of work.The circulation of mud is kept by steam piano.The high-pressure slurry of discharging from steam piano through ground high pressure pipe joint, standpipe, rotary hose, water swivel, square kelly, drilling rod, drill collar to drill bit, from the bit nozzle ejection, with bottom-hole cleaning and cutting carring.And then upwards flow along the annular space that drill string and the borehole wall (or sleeve pipe) form, flow into suction pit by vent line arriving ground, then return to upper pool after various solid phase opertaing devices are processed, the Recycling of the most laggard people's steam piano.The various pipe fittings of mud stream warp, Drilling Mud are the important component parts of modern oil/gas drilling engineering.Mud has the effect of the several respects such as carry and suspend landwaste, stabilizing borehole and equilibrium strata pressure, Cooling and Lubricator drill bit and drilling tool, transmission hydrodynamic force in drilling process.Drilling practice proves, the quality of mud property, whether use, maintenance and processing be proper, is directly connected to rate of penetration, bit life, down-hole problem, uphole equipment wearing and tearing, mud expense and the whole drilling well integrated cost of drilling well, even is related to the success or failure of drilling well.Therefore, necessary the mud property parameter is carried out real-time measurement, feedback, in order in time pinpoint the problems.
Target type meter is compared with differential pressure flowmeter, and the critical Reynolds number that its coefficient of flow is tending towards constant is less, therefore is suitable for measuring the flow of the larger liquid of viscosity, for example mud viscosity.But the relation between the flow of general target type meter and test signal (power) is nonlinear, and this just brings very large inconvenience to use, and has limited the usable range of flowmeter.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, a kind of auto-compensation target type meter is provided, this auto-compensation target type meter also has dynamic property and higher measuring accuracy preferably except guaranteeing that between output electric weight and measured flux be linear relationship.
Another object of the present invention is to provide a kind of investigating method based on above-mentioned auto-compensation target type meter.
Purpose of the present invention is achieved through the following technical solutions: the auto-compensation target type meter, mainly running through by pipeline and an end fork that is arranged on pipe interior consists of, the end that described fork is positioned at pipe interior is equipped with target, and its other end is equipped with the Electromagnetic Control element.
Be connected with controller on described Electromagnetic Control element, the other end of described controller is connected on fork.
Also be parallel with voltage current adapter and switching network between described controller and Electromagnetic Control element.
Also be provided with position transducer between described controller and fork.
Investigating method based on above-mentioned auto-compensation target type meter comprises the following steps:
(a) during liquid is flowed through the process of pipeline, the target that is arranged on fork one end is formed thrust;
(b) target drives fork and forms skew, and position transducer measures this side-play amount, and passes to controller;
(c) controller according to the parameter that sets in advance, outputs a control signal to voltage current adapter and switching network;
(d) voltage current adapter and switching network are passed to later the Electromagnetic Control element with the control signal conversion, and then guarantee that by the Electromagnetic Control element between output electric weight and measured flux be linear relationship.
In sum, the invention has the beneficial effects as follows: except guaranteeing between output electric weight and measured flux to be linear relationship, also have dynamic property and higher measuring accuracy preferably.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment:
As shown in Figure 1, the auto-compensation target type meter that the present invention relates to, mainly run through by pipeline 2 and an end fork 3 that is arranged on pipeline 2 inside and consist of, the end that described fork 3 is positioned at pipeline 2 inside is equipped with target 1, and its other end is equipped with Electromagnetic Control element 4.
Be connected with controller 6 on described Electromagnetic Control element 4, the other end of described controller 6 is connected on fork 3.
4 of described controller 6 and Electromagnetic Control elements also are parallel with voltage current adapter 7 and switching network 8.
Also be provided with position transducer 5 between described controller 6 and fork 3.
Investigating method of the present invention is: liquid is flowed through in the process of pipeline 2, and the target 1 that is arranged on fork 3 one ends is formed thrust; Target 1 drives fork 3 and forms skew, and position transducer 5 measures this side-play amount, and passes to controller 6; Controller 6 outputs a control signal to voltage current adapter 7 and switching network 8 according to the parameter that sets in advance; Voltage current adapter 7 and switching network 8 are passed to later Electromagnetic Control element 4 with the control signal conversion, and then guarantee that by Electromagnetic Control element 4 between output electric weight and measured flux be linear relationship.
The above is only preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, and every foundation technical spirit of the present invention, any simple modification, equivalent variations that above embodiment is done are within all falling into protection scope of the present invention.
Claims (5)
1. auto-compensation target type meter, it is characterized in that, mainly run through by pipeline (2) and an end and be arranged on inner fork (3) formation of pipeline (2), described fork (3) is positioned at the inner end of pipeline (2) target (1) is installed, and its other end is equipped with Electromagnetic Control element (4).
2. auto-compensation target type meter according to claim 1, is characterized in that, is connected with controller (6) on described Electromagnetic Control element (4), and the other end of described controller (6) is connected on fork (3).
3. auto-compensation target type meter according to claim 2, is characterized in that, also is parallel with voltage current adapter (7) and switching network (8) between described controller (6) and Electromagnetic Control element (4).
4. auto-compensation target type meter according to claim 2, is characterized in that, also is provided with position transducer (5) between described controller (6) and fork (3).
5. based on the investigating method of above-mentioned auto-compensation target type meter, it is characterized in that, comprise the following steps:
(a) during liquid is flowed through the process of pipeline (2), the target (1) that is arranged on fork (3) one ends is formed thrust;
(b) target (1) drives fork (3) and forms skew, and position transducer (5) measures this side-play amount, and passes to controller (6);
(c) controller (6) according to the parameter that sets in advance, outputs a control signal to voltage current adapter (7) and switching network (8);
(d) voltage current adapter (7) and switching network (8) are passed to later Electromagnetic Control element (4) with the control signal conversion, and then guarantee that by Electromagnetic Control element (4) between output electric weight and measured flux be linear relationship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110379769 CN103090919A (en) | 2011-11-08 | 2011-11-08 | Automatic compensation target type flowmeter and measurement and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110379769 CN103090919A (en) | 2011-11-08 | 2011-11-08 | Automatic compensation target type flowmeter and measurement and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103090919A true CN103090919A (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110379769 Pending CN103090919A (en) | 2011-11-08 | 2011-11-08 | Automatic compensation target type flowmeter and measurement and control method thereof |
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| CN (1) | CN103090919A (en) |
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Application publication date: 20130508 |