CN211314143U - Solid-liquid fluid flow measuring system in drilling manifold - Google Patents
Solid-liquid fluid flow measuring system in drilling manifold Download PDFInfo
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- CN211314143U CN211314143U CN201921438474.9U CN201921438474U CN211314143U CN 211314143 U CN211314143 U CN 211314143U CN 201921438474 U CN201921438474 U CN 201921438474U CN 211314143 U CN211314143 U CN 211314143U
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- 239000007788 liquid Substances 0.000 title claims abstract description 75
- 239000012530 fluid Substances 0.000 title claims abstract description 73
- 238000005553 drilling Methods 0.000 title claims abstract description 53
- 238000005259 measurement Methods 0.000 claims abstract description 57
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 230000008859 change Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000000691 measurement method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The utility model provides a solid-liquid fluid flow measurement system in well drilling manifold, the measurement system includes height measurement mechanism, solid-liquid fluid velocity of flow measurement mechanism and measurement display mechanism, height measurement mechanism can measure the empty pipe height, solid-liquid fluid velocity of flow measurement mechanism sets up and is used for measuring the real-time velocity of flow of solid-liquid fluid on the surface of well drilling manifold; the measurement display mechanism can calculate the real-time flow of the solid-liquid fluid. The utility model discloses a measurement system can return out the flow to well drilling in-process well head and carry out real-time measurement, can improve and return out flow measurement's precision and real-time, is favorable to improving the accurate judgement to the situation in the pit.
Description
Technical Field
The utility model belongs to the technical field of the petroleum engineering well drilling, more specifically say, relate to a solid-liquid fluid flow measurement system in well drilling manifold.
Background
The phenomena of well leakage, gas invasion and the like are often accompanied in the petroleum drilling process, and if the phenomena are not timely treated, disastrous accidents such as blowout and the like can be caused. According to the theory, under the normal drilling working condition, the injection flow of the drilling fluid and the return flow of the wellhead should be consistent, and if the flow of the drilling fluid returned from the wellhead is inconsistent with the injection flow of the drilling fluid from the wellhead, the condition under the well is indicated. Therefore, the accurate measurement of the flow of the well drilling fluid returned from the wellhead can provide a basis for quantitatively judging the underground condition.
At present, the measurement method mainly comprises a flow measurement method and a volume measurement method. The flow measurement method adopts flowmeters such as electromagnetism and ultrasonic waves to measure, the flow meter measurement principle is that the flow velocity of fluid is generally measured, and the real-time flow of the fluid in the pipe is calculated through the flow velocity. The measurement accuracy of the method depends heavily on the filling degree in the pipe, and if the pipe is not filled, the measured value and the actual value have deviation. The returned drilling fluid often contains three mixtures of solid, liquid and gas, and the manifold cannot be filled, so the flow measurement method cannot provide accurate solid-liquid flow. The volume type measuring method is characterized in that a buffer tank is arranged at an outlet of a return manifold, the volume of a tank body is fixed, and real-time flow is calculated by measuring the rising height of the liquid level of the tank body within fixed time. The flow measurement method can eliminate the influence of gas, but cannot realize on-line continuous measurement, and the measurement precision is influenced by the volume of the tank body and the liquid level measurement. Both of the two measurement methods are difficult to ensure real-time measurement precision, and the real-time performance of on-site working condition judgment is reduced.
SUMMERY OF THE UTILITY MODEL
To overcome the deficiencies in the prior art, one of the objects of the present invention is to solve one or more of the problems of the prior art. For example, an object of the present invention is to provide a solid-liquid fluid measurement system capable of improving the accuracy and real-time performance of measuring the flow rate of a return manifold.
The utility model provides a solid-liquid fluid flow measurement system in well drilling manifold, measurement system can include height measurement mechanism, solid-liquid fluid velocity of flow measurement mechanism and measurement display mechanism, wherein, height measurement mechanism includes height measurement meter, activity kickboard and activity chain, height measurement meter sets up in the surface of well drilling manifold, activity kickboard is located solid-liquid fluid's in the well drilling manifold liquid level and can float from top to bottom along with the change of height of solid-liquid fluid liquid level in the well drilling manifold, activity chain sets up in solid-liquid fluid, and one end is connected with the activity kickboard, and the other end is connected with the pipe wall of well drilling manifold, height measurement meter can measure the air traffic control height in real time, the air traffic control height is the biggest vertical distance of activity kickboard upper surface to manifold upper portion inner wall; the solid-liquid fluid flow velocity measuring mechanism is arranged on the surface of the drilling manifold and is used for measuring the real-time flow velocity of the solid-liquid fluid; the measurement display mechanism can receive the height of the empty pipe measured by the height measuring meter and the real-time flow rate measured by the solid-liquid fluid flow rate measuring mechanism and calculate the real-time flow rate of the solid-liquid fluid according to the height of the empty pipe and the real-time flow rate.
In an exemplary embodiment of the solid-liquid flow measurement system in a drilling manifold of the present invention, the solid-liquid flow velocity measurement mechanism may be located at a lowermost end of the drilling manifold in a direction perpendicular to the liquid level.
In an exemplary embodiment of the present invention, the height gauge may be an ultrasonic gauge.
In an exemplary embodiment of the solid-liquid fluid flow measurement system in a drilling manifold of the present invention, the measurement display mechanism may calculate the real-time flow rate by the following calculation formula:
order to
If H-R > 0, then
If H-R is 0, Q is 0.5 pi R2*V，
If H-R < 0, then
Wherein Q is the real-time flow of the solid-liquid fluid, R is the inner diameter of the manifold, H is the height of the hollow pipe, and V is the solid-liquid
Compared with the prior art, the beneficial effects of the utility model include: the utility model discloses a measurement system can reject gaseous influence in solid-liquid-gas ternary mixture, can return out the flow to well drilling in-process well head and carry out real-time measurement, can improve and return out flow measuring precision and real-time, is favorable to improving the accurate judgement to the situation in the pit, and the system sets up rationally, easy operation.
Drawings
The above and other objects and features of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:
fig. 1 shows a schematic diagram of a system for measuring solid-liquid fluid flow in a drilling manifold according to an exemplary embodiment of the present invention.
Detailed Description
Hereinafter, a solid-liquid fluid flow measurement system in a drilling manifold according to the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments.
Fig. 1 shows a schematic diagram of a solid-liquid fluid flow measurement system in a drilling manifold according to an exemplary embodiment of the present invention, wherein fig. (a) is a schematic diagram of the measurement system, and fig. (b) is a schematic diagram of the height of an empty pipe.
The utility model provides a solid-liquid fluid flow measurement system in well drilling manifold. In an exemplary embodiment of the solid-liquid fluid flow measurement system in a drilling manifold of the present invention, as shown in fig. 1(a), the measurement system may include a height measurement mechanism 20, a solid-liquid fluid flow rate measurement mechanism 30, and a measurement display mechanism (not shown), wherein,
the height measuring mechanism may include a height measuring gauge 201, a movable float plate 202, and a movable chain 203. The height gauge 201 is positioned at the surface of the drilling manifold 10 as shown. The floating plate 202 is located at the surface of the solid-liquid fluid in the drilling manifold. The movable chain 203 is arranged in the solid-liquid fluid, one end of the movable chain is connected with the pipe wall of the drilling manifold, and the other end of the movable chain is connected with the movable floating plate 202. The movable chain 203 can ensure that the movable floating plate 202 moves within a certain range, and the fluid is prevented from flowing out of the manifold along with the flow of the fluid. The upper surface of the movable floating plate 202 and the liquid level of the solid-liquid fluid are located in the same plane, or the thickness of the movable floating plate 202 is quite thin and can be ignored. The movable floating plate can fluctuate according to fluctuation of the liquid level height and can reflect the height of an empty pipe (a space where fluid does not flow in the manifold) in the pipe. The height gauge 202 is capable of measuring the maximum vertical distance from the upper surface of the movable floating plate in the manifold to the inner wall of the pipe in the space without solid-liquid fluid in the manifold, for example, H in fig. 1(b) is the height of the empty pipe, wherein fig. 1(b) is the radial cross section of the manifold, and R is the radius of the pipeline in the manifold. The measuring hollow pipe is positioned in a direction vertical to the liquid level and passes through the center of a cross section of the manifold. The empty pipe refers to a portion of space in the manifold where no fluid is flowing. Because the drilling fluid comprises a mixture of a solid state, a gas state and a liquid state, the solid-liquid mixed fluid flowing in the pipeline of the manifold cannot completely fill the whole pipeline, and therefore a part of space without flowing of the solid-liquid fluid is reserved in the manifold. The height of the empty pipe refers to the maximum vertical distance from the liquid level of the solid-liquid fluid to the inner wall of the upper part of the manifold in the radial direction. Namely, the height of the empty pipe is the difference between the radial diameter size of the drilling manifold and the depth of the solid-liquid fluid in the drilling manifold. The movable floating plate has the advantage that the reflection intensity of the height measurement signal of the empty pipe can be enhanced, so that the monitoring precision and accuracy are improved.
The solid-liquid fluid flow velocity measuring mechanism can be arranged on the surface of the manifold and used for measuring the real-time flow velocity of the solid-liquid fluid.
The measuring mechanism can receive the height of the empty pipe and the real-time flow rate and calculate the real-time flow of the solid-liquid fluid according to the height of the empty pipe and the real-time flow rate.
In this embodiment, the solid-liquid flow rate measurement mechanism is located at the lowest end of the drilling manifold in a direction perpendicular to the liquid level. As shown in fig. 1(a), the solid-liquid flow rate measurement means is attached to the lowermost end of the manifold, and the solid-liquid flow rate can be measured while ensuring a low liquid level.
In this embodiment, the height gauge may be an ultrasonic gauge. Of course, the height gauge of the present invention is not limited thereto.
In this embodiment, the measurement display mechanism may calculate the real-time flow rate by the following calculation formula:
order to
If H-R > 0, then
If H-R is 0, Q is 0.5 pi R2*V，
If H-R < 0, then
Wherein Q is the real-time flow of the solid-liquid fluid, R is the inner diameter of the manifold, H is the height of the hollow pipe, and V is the real-time flow rate of the solid-liquid fluid.
On one hand, due to the fact that the drilling fluid has strong corrosivity, if all measuring devices involved in the measuring process are arranged in the manifold and are in contact with the drilling fluid, all the devices can be seriously corroded; on the other hand, because the drilling fluid has a certain viscosity and contains a certain amount of solids, if the measuring device is directly contacted with the drilling fluid or the drilling fluid is directly circulated in the measuring device, the drilling fluid can form a package on the surface of the measuring device and block the measuring device, so that the measuring device is damaged; on the other hand, the measuring devices used at present generally use flanges to connect with the manifold, which causes inconvenience in use and may damage the inherent structure of the manifold. The utility model discloses a set up movable kickboard in the drilling fluid, measuring mechanism and solid-liquid fluid velocity of flow measuring mechanism etc. all set up on the surface of manifold, can not with drilling fluid direct contact, can avoid the drilling fluid to measuring equipment's damage. In addition, the movable floating plate can be easily placed into the manifold, the former structure of the manifold cannot be damaged, and the movable floating plate is convenient to use and wide in applicability.
To sum up, the utility model discloses a measurement system can return out the flow to well drilling in-process well head and carry out real-time measurement, can improve and return out flow measurement's precision and real-time, is favorable to improving the accurate judgement to the situation in the pit.
Although the present invention has been described above in connection with exemplary embodiments, it will be apparent to those skilled in the art that various modifications and changes may be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A solid-liquid fluid flow measuring system in a drilling manifold is characterized by comprising a height measuring mechanism, a solid-liquid fluid flow rate measuring mechanism and a measurement display mechanism,
the height measuring mechanism comprises a height measuring meter, a movable floating plate and a movable chain, the height measuring meter is arranged on the surface of the drilling manifold, the movable floating plate is positioned on the liquid level of solid-liquid fluid in the drilling manifold and can float up and down along with the height change of the liquid level of the solid-liquid fluid in the drilling manifold, the movable chain is arranged in the solid-liquid fluid, one end of the movable floating plate is connected with the movable floating plate, the other end of the movable floating plate is connected with the pipe wall of the drilling manifold, the height measuring meter can measure the height of an empty pipe in real time, and the height of the empty pipe is the maximum vertical distance from the upper surface of the movable floating plate to the inner wall of the upper part;
the solid-liquid fluid flow velocity measuring mechanism is arranged on the surface of the drilling manifold and is used for measuring the real-time flow velocity of the solid-liquid fluid;
the measurement display mechanism can receive the height of the empty pipe measured by the height measuring meter and the real-time flow rate measured by the solid-liquid fluid flow rate measuring mechanism and calculate the real-time flow rate of the solid-liquid fluid according to the height of the empty pipe and the real-time flow rate.
2. The system of claim 1, wherein the solid-liquid flow rate measurement mechanism is disposed at a lowermost end of the drilling manifold.
3. The system of claim 1, wherein the height gauge is an ultrasonic gauge.
4. The system of claim 1, wherein the measurement display mechanism calculates the real-time flow rate by the following calculation:
order to
If H-R > 0, then
If H-R is 0, Q is 0.5 pi R2*V，
If H-R < 0, then
Wherein Q is the real-time flow of the solid-liquid fluid, R is the inner diameter of the manifold, H is the height of the hollow pipe, and V is the real-time flow rate of the solid-liquid fluid.
5. The system of claim 1, wherein the height measurement mechanism is located directly above the floating plate.
6. The system of claim 1, wherein the upper surface of the floating plate is in the same plane as the solid-liquid fluid level in the manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921438474.9U CN211314143U (en) | 2019-08-30 | 2019-08-30 | Solid-liquid fluid flow measuring system in drilling manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921438474.9U CN211314143U (en) | 2019-08-30 | 2019-08-30 | Solid-liquid fluid flow measuring system in drilling manifold |
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| Publication Number | Publication Date |
|---|---|
| CN211314143U true CN211314143U (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921438474.9U Active CN211314143U (en) | 2019-08-30 | 2019-08-30 | Solid-liquid fluid flow measuring system in drilling manifold |
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| Country | Link |
|---|---|
| CN (1) | CN211314143U (en) |
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2019
- 2019-08-30 CN CN201921438474.9U patent/CN211314143U/en active Active
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