CN203835372U - Well logging density sensor - Google Patents
Well logging density sensor Download PDFInfo
- Publication number
- CN203835372U CN203835372U CN201420209579.8U CN201420209579U CN203835372U CN 203835372 U CN203835372 U CN 203835372U CN 201420209579 U CN201420209579 U CN 201420209579U CN 203835372 U CN203835372 U CN 203835372U
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- China
- Prior art keywords
- detector
- measuring tube
- sensor
- shell
- density
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- Expired - Lifetime
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 9
- 239000001997 corrosion-resisting alloy Substances 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 6
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000001739 density measurement Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000002285 radioactive effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model belongs to measurement instruments and specifically relates to a well logging density sensor used for measuring the density of downhole liquid in a petroleum well. The sensor is matched with a transmitter, thereby forming a special logging instrument for measuring the density. The sensor comprises a pair of high-pressure joints for allowing fluid to flow in and out, a platinum resistor temperature sensor, a fixed pressing block, an outer shell, a measurement pipe, a first detector, a second detector, a vibration exciter, a fixed pressing plate, and positioning rings. The beneficial effects of the utility model are that by adopting the aforementioned technical scheme, the integrally-processed cylindrical outer shell, fixed pressing block, fixed pressing plate, and two positing rings are utilized, thereby simplifying the structure, increasing the overall rigidity, and making the mounting, regulating, and maintaining more convenient. According to tests, the sensor is stable in measurement result, good in repeatability and linearity, and high in accuracy after temperature compensation. The problems that conventional logging instruments adopting radioactive sources for density measurement are inconvenient to use and difficult to maintain are solved thoroughly.
Description
Technical field
The utility model belongs to measuring apparatus, is specifically related to a kind of sensor for fluid density under oil drilling measuring well, and this sensor coordinates with transmitter, forms the special logger of density measurement.
Background technology
Due to the special operation condition of oil drilling, require logger volume little (diameter can not be greater than well-drilling borehole), ambient conditions severe (temperature is the highest 180 ℃, the maximum 160Mpa of pressure), certainty of measurement requires high.A lot of patents and the well logging density instrument of using at present, majority is to utilize the ray of radioactive source to penetrate measured medium, by probe detection computations.Existing logging technique and patent exist measure inaccurate, use the problems such as inconvenience and maintaining difficulty.
The patent No. 201210286433.9, name is called a kind of well logging densometer, although solve these problems well.But the sensor in this invention (once table), because structure is designed to closed cylinder, is manufactured processing and is assembled, debugs more difficult.Repeatability and less stable.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of structure problem existing for sensor (once table), according to measuring vibrations frequency, calculate the principle of density, structurally make significant improvement, more be applicable to processing and manufacturing and assembling, debugging, make density measure more stable, the well logging density sensor that repeatability and stability are all improved.
The technical solution of the utility model is: a kind of well logging density sensor, and this sensor comprises a pair of high pressure connection for fluid inflow and outflow, platinum resistance temperature sensor, fixing briquetting, shell, measuring tube, the first detector, the second detector, vibrator, fixation clip and locating ring; It is characterized in that,
Described shell is processed by a cylindrical corrosion resisting alloy steel integral body, a deep trouth is driven at middle part at the shell of cylindrical corrosion resisting alloy steel, the symmetric position at the inner two ends of described deep trouth is provided with projection, and described high pressure connection is arranged on the two ends of the shell of described cylindrical corrosion resisting alloy steel;
Described measuring tube adopts a seamless pipe cold bending, middle part bending ovalize, welding mustn't be interrupted in centre, and before assembling, suppress 160Mpa pressurize a period of time, make its stabilization in working order, be placed in the deep trouth of described shell, by locating ring, be fixed in projection, by fixing briquetting, measuring tube is fixed, the two ends of measuring tube are connected with the high pressure connection that is arranged on shell two ends respectively, described platinum resistance temperature sensor is arranged on the body of described measuring tube of fluid upstream end, described vibrator, the first detector and the second detector are installed by support on the tube wall of ovalize in centre position of described measuring tube, by fixation clip, be fixed, described vibrator is between described the first detector and the second detector.
Further, a circular hole is opened in the centre of described fixation clip, whether for observing described vibrator, to be positioned at the position that described the first detector and the second detector install correct, at two ends, there are four larger fixing holes, are convenient to the adjustment up and down that described vibrator is positioned at described the first detector and the second detector.
The beneficial effects of the utility model are: owing to adopting technique scheme, adopt the barrel shrond of whole processing, and fixing briquetting, fixation clip and two locating rings etc., simplify the structure, and improved integral rigidity, is more convenient to install, debugging and keeping in repair.Stable through testing this sensor measurement, repeatability and good linearity, the degree of accuracy after temperature compensated is higher.Thoroughly solved the problem of using inconvenient and maintaining difficulty when existing logger adopts radioactive source density measurement.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of a kind of density sensor of logging well of the utility model.
Fig. 2 is the right side cross-sectional schematic of a kind of density sensor of logging well of the utility model.
Fig. 3 is the schematic top plan view of a kind of density sensor of logging well of the utility model.
In figure:
1. high pressure connection, 2. platinum resistance temperature sensor, 3. fixing briquetting, 4. shell, 5. measuring tube, 6. the first detector, 7. vibrator, 8. fixation clip, 9. locating ring, 10. the second detector, 11. projections, 12, circular hole, 13. fixing holes.
The specific embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described further.
As Figure 1-3, a kind of well logging density sensor of the utility model, this sensor comprises a pair of high pressure connection 1 for fluid inflow and outflow, platinum resistance temperature sensor 2, fixedly briquetting 3, shell 4, measuring tube 5, the first detector 6, the second detector 10,7 vibrators, fixation clip 8 and locating ring 9;
Described shell 4 is processed by a cylindrical corrosion resisting alloy steel integral body, a deep trouth is driven at middle part at the shell 4 of cylindrical corrosion resisting alloy steel, the symmetric position at the inner two ends of described deep trouth is provided with projection 11, and described high pressure connection 1 is arranged on the two ends of the shell 4 of described cylindrical corrosion resisting alloy steel;
Described measuring tube 5 adopts a seamless pipe cold bending, middle part bending ovalize, welding mustn't be interrupted in centre, and before assembling, suppress 160Mpa pressurize a period of time, make its stabilization in working order, measuring tube 5 after detection is placed in the deep trouth of described shell 4, by locating ring 9, be fixed in projection 11, by fixing briquetting 3, measuring tube 5 is fixed, the two ends of measuring tube 5 are connected with the high pressure connection 1 that is arranged on shell 4 two ends respectively, described platinum resistance temperature sensor 2 is arranged on the body of described measuring tube 5 of fluid upstream end, described vibrator 7, the first detector 6 and the second detector 10 are installed by support on the tube wall of ovalize in centre position of described measuring tube 5, by fixation clip 8, be fixed, described vibrator 7 is between described the first detector 6 and the second detector 10.
A circular hole 12 is opened in the centre of described fixation clip 8, whether correct for observing the position that described vibrator 7, the first detector 6 and the second detector 10 install, the fixing hole 13 being provided with at the top panel two ends of fixation clip 8, is convenient to the adjustment up and down of described vibrator, the first detector 6 and the second detector 10.
Operating principle of the present utility model is: by secondary instrument, provide the pumping signal of the positive feedback after frequency-selecting, deliver to and be arranged on the middle vibrator 7 of measuring tube 5, make measuring tube 5 produce self-oscillation, measured liquid flows in measuring tube 5 through high pressure connection 1, from the other end of measuring tube 5, flow out, the first detector 6 and the second detector 10 collect respectively oscillator signal, and by the signal output collecting, according to Coriolis (Coriolis) power principle, according to the phase difference of the first detector 6 and the second detector 10 output signals, can obtain measuring liquid quality flow, according to the computation of Period of measuring tube 5 vibrations, go out density, utilize the platinum resistance temperature sensor 2 of pasting on pipeline to measure temperature.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (2)
1. a well logging density sensor, this sensor comprises a pair of high pressure connection for fluid inflow and outflow, platinum resistance temperature sensor, fixing briquetting, shell, measuring tube, the first detector, the second detector, vibrator, fixation clip and locating ring; It is characterized in that,
Described shell is processed by a cylindrical corrosion resisting alloy steel integral body, a deep trouth is driven at middle part at the shell of cylindrical corrosion resisting alloy steel, the symmetric position at the inner two ends of described deep trouth is provided with projection, and described high pressure connection is arranged on the two ends of the shell of described cylindrical corrosion resisting alloy steel;
Described measuring tube adopts a seamless pipe cold bending, middle part bending ovalize, welding mustn't be interrupted in centre, and before assembling, suppress 160Mpa pressurize a period of time, make its stabilization in working order, described measuring tube is placed in the deep trouth of described shell, by locating ring, be fixed in projection, by fixing briquetting, measuring tube is fixed, the two ends of measuring tube are connected with the high pressure connection that is arranged on shell two ends respectively, described platinum resistance temperature sensor is arranged on the body of described measuring tube of fluid upstream end, described vibrator, the first detector and the second detector are installed by support on the tube wall of ovalize in centre position of described measuring tube, by fixation clip, be fixed, described vibrator is between described the first detector and the second detector.
2. a kind of well logging density sensor as claimed in claim 1, it is characterized in that, a circular hole is opened in the centre of described fixation clip, whether for observing described vibrator, to be positioned at the position that described the first detector and the second detector install correct, at two ends, there are four larger fixing holes, are convenient to the adjustment up and down that described vibrator is positioned at described the first detector and the second detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420209579.8U CN203835372U (en) | 2014-04-25 | 2014-04-25 | Well logging density sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420209579.8U CN203835372U (en) | 2014-04-25 | 2014-04-25 | Well logging density sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835372U true CN203835372U (en) | 2014-09-17 |
Family
ID=51513228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420209579.8U Expired - Lifetime CN203835372U (en) | 2014-04-25 | 2014-04-25 | Well logging density sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939087A (en) * | 2014-04-25 | 2014-07-23 | 中国石油集团渤海钻探工程有限公司 | Well logging density sensor |
-
2014
- 2014-04-25 CN CN201420209579.8U patent/CN203835372U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939087A (en) * | 2014-04-25 | 2014-07-23 | 中国石油集团渤海钻探工程有限公司 | Well logging density sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |
|
| CX01 | Expiry of patent term |