CN210003227U - device for online detection of drilling fluid pressure by using spacer fluid - Google Patents
device for online detection of drilling fluid pressure by using spacer fluid Download PDFInfo
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- CN210003227U CN210003227U CN201920105555.0U CN201920105555U CN210003227U CN 210003227 U CN210003227 U CN 210003227U CN 201920105555 U CN201920105555 U CN 201920105555U CN 210003227 U CN210003227 U CN 210003227U
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- storage tank
- isolation
- drilling fluid
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Abstract
The utility model discloses an adopt buffer solution to carry out drilling fluid pressure on-line measuring device, including buffer solution storage tank, process connecting part, inject the buffer solution in the buffer solution storage tank, air of constant pressure is injected into the buffer solution storage tank top, process connecting part makes for the tee bend form, end links to each other with the drilling fluid pipeline, end links to each other with the instrument, end links to each other with the ooff valve, the ooff valve is connected with buffer solution storage tank portion.
Description
Technical Field
The utility model belongs to drilling fluid rheology on-line measuring field, concretely relates to adopt the buffer solution to carry out drilling fluid pressure on-line measuring device.
Background
The conventional pressure taking mode can cause measurement errors and faults when used for detecting the drilling fluid, and the conventional pressure taking mode has the problems that a pressure taking hole is easy to block, the pressure taking value is low, and a pressure taking diaphragm is corroded and abraded.
Disclosure of Invention
In order to solve the problem of the existence, the utility model provides an adopt the buffer solution to carry out drilling fluid pressure on-line measuring device.
The utility model discloses a realize through following technical scheme:
device for online detection of drilling fluid pressure by using isolation fluid comprises an isolation fluid storage tank and a process connecting part, wherein the isolation fluid storage tank is filled with the isolation fluid, air with constant pressure is filled into the top of the isolation fluid storage tank, the process connecting part is made into a three-way form, a end is connected with a drilling fluid pipeline, a end is connected with an instrument, a end is connected with a switch valve, and the switch valve is connected with the isolation fluid storage tank.
As the utility model discloses a go into step optimization scheme, before the on-line measuring, through the ooff valve makes the buffer solution be full of the process adapting unit who gets the pressure to close, begin to get the pressure on line, because the process adapting unit who gets the pressure is full of by the buffer solution, the drilling fluid of surveying can not fully get into the process adapting unit who gets the pressure, but along with the extension of online time, the drilling fluid of surveying can be continuous to be mixed with the buffer solution, leads to the buffer solution ability to descend, so regular operation ooff valve can guarantee that the buffer solution works at optimum all the time.
As the optimization scheme of step of the utility model, the spacer fluid injected into the spacer fluid storage tank can be selected from clear water or other liquid with lower viscosity.
As the utility model discloses a go into step optimization scheme, the air that the spacer fluid storage tank top was injected into provides or makes the spacer fluid area press through hydraulic pressure booster through the air compressor machine.
Compared with the prior art, the beneficial effects of the utility model are that: the novel online pressure sensor can be applied online, and continuous online pressure detection of drilling fluid is realized; the problems of blockage, low reading and the like caused by increasing friction stress cannot be caused; the online detection precision of the drilling fluid is guaranteed, and meanwhile, the corrosion danger of a detection instrument is avoided.
Drawings
Fig. 1 is a schematic structural view of the air compressor of the present invention;
fig. 2 is a schematic structural diagram of the present invention when a hydraulic pressure booster is used.
In the figure: 1. a spacer fluid storage tank; 2. a process connection component; 3. a meter; 4. an on-off valve; 5. a drilling fluid line; 6. an air compressor; 7. and a hydraulic pressure booster.
Detailed Description
The present invention will be described in detail below in with reference to the accompanying drawings and the following detailed description:
as shown in figures 1-2, devices for online detection of drilling fluid pressure by using isolation fluid comprise an isolation fluid storage tank (1) and a process connecting component (2), isolation fluid is injected into the isolation fluid storage tank (1), air with constant pressure is injected into the top of the isolation fluid storage tank (1), the process connecting component (2) is made into a three-way form, the end is connected with a drilling fluid pipeline (5), the end is connected with an instrument (3), and the end is connected with a switch valve (4), the switch valve (4) is connected with the isolation fluid storage tank (1), before online detection, the isolation fluid is filled with the pressure-taking process connecting component (2) through the switch valve (4) and is closed, online pressure taking is started, the measured drilling fluid cannot fully enter the pressure-taking process connecting component (2) due to the fact that the pressure-taking process connecting component (2) is filled with the isolation fluid, the measured drilling fluid can be continuously mixed with the isolation fluid under pressure to cause the isolation fluid to be reduced, the switch valve can be periodically operated to ensure that the isolation fluid works in the best state, other isolation fluid can be injected into the isolation fluid storage tank through an optional air compressor (6) or other pressure boosters (7).
In the embodiment, the novel device can be applied on line, and continuous online pressure detection of the drilling fluid is realized; the problems of blockage, low reading and the like caused by increasing friction stress cannot be caused; the online detection precision of the drilling fluid is guaranteed, and meanwhile, the corrosion danger of a detection instrument is avoided.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
- The device for online detection of drilling fluid pressure by using the isolation fluid comprises an isolation fluid storage tank and a process connecting part and is characterized in that the isolation fluid is injected into the isolation fluid storage tank, air with constant pressure is injected into the top of the isolation fluid storage tank, the process connecting part is made into a three-way form, the end is connected with a drilling fluid pipeline, the end is connected with an instrument, the end is connected with a switch valve, and the switch valve is connected with the isolation fluid storage tank.
- 2. The kind of devices for online testing of drilling fluid pressure using isolation fluid according to claim 1, wherein before online testing, the isolation fluid is filled with the pressure-tapping process connection component through the switch valve, and is closed to start online pressure tapping, and the tested drilling fluid cannot enter the pressure-tapping process connection component sufficiently because the pressure-tapping process connection component is filled with the isolation fluid, but as the online time increases, the tested drilling fluid will be mixed with the isolation fluid continuously, resulting in the decrease of the performance of the isolation fluid, so that the isolation fluid can be guaranteed to work in an optimum state all the time by periodically operating the switch valve.
- 3. The device for online detection of drilling fluid pressure by using spacer fluid according to claim 1, wherein the spacer fluid injected into the spacer fluid storage tank can be selected from clear water or other liquid with lower viscosity.
- 4. The device for detecting the pressure of drilling fluid by using spacer fluid according to claim 1, wherein the air injected from the top of the spacer fluid storage tank is supplied by an air compressor or the spacer fluid is pressurized by a hydraulic booster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920105555.0U CN210003227U (en) | 2019-01-22 | 2019-01-22 | device for online detection of drilling fluid pressure by using spacer fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920105555.0U CN210003227U (en) | 2019-01-22 | 2019-01-22 | device for online detection of drilling fluid pressure by using spacer fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210003227U true CN210003227U (en) | 2020-01-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920105555.0U Active CN210003227U (en) | 2019-01-22 | 2019-01-22 | device for online detection of drilling fluid pressure by using spacer fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210003227U (en) |
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2019
- 2019-01-22 CN CN201920105555.0U patent/CN210003227U/en active Active
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