CN103939087A - Well logging density sensor - Google Patents
Well logging density sensor Download PDFInfo
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- CN103939087A CN103939087A CN201410172618.6A CN201410172618A CN103939087A CN 103939087 A CN103939087 A CN 103939087A CN 201410172618 A CN201410172618 A CN 201410172618A CN 103939087 A CN103939087 A CN 103939087A
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- well logging
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Abstract
The invention belongs to measuring instruments, and particularly relates to a well logging density sensor used for measuring underground liquid density in petroleum drilling. The well logging density sensor is matched with a transmitter to constitute a well logging instrument special for measuring density. The well logging density sensor comprises a pair of high pressure connectors used for allowing fluid to flow in and out, a platinum resistor temperature sensor, fixed pressing blocks, an outer shell, a measuring tube, a first detector, a second detector, a vibration exciter, fixed pressing plates and locating rings. The well logging density sensor has the advantages that according to the technical scheme, the cylindrical outer shell, the fixed pressing blocks, the fixed pressing plates, the two locating rings and the like which are integrally processed are adopted, the structure is simplified, the overall rigidity is improved, and mounting, adjusting and maintaining can be achieved more conveniently. Experiments show that the sensor is stable in measuring result, good in repeatability and linearity, and the degree of accuracy is high after temperature compensation. The well logging density sensor thoroughly solves the problem that an existing well logging instrument is inconvenient to use and difficult to repair and maintain while a radioactive source is used for measuring density.
Description
Technical field
The invention belongs to measuring apparatus, be specifically related to a kind of sensor for fluid density under oil drilling measuring well, this sensor coordinates with transmitter, the special logger of composition 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 DEG C, the maximum 160Mpa of pressure), certainty of measurement requires high.A lot of patents and the well logging density instrument 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 object of this invention is to provide a kind of structure problem existing for sensor (once table), calculate the principle of density according to measuring vibrations frequency, 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.
Technical scheme of the present invention 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 entirety, drive a deep trouth at the middle part of 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, be fixed in projection by locating ring, 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 the centre position of described measuring tube, be fixed by fixation clip, 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, there are four larger fixing holes at two ends, are convenient to described vibrator and are positioned at the adjustment up and down of described the first detector and the second detector.
The invention has the beneficial effects as follows: owing to adopting technique scheme, the barrel shrond of employing entirety processing, fixing briquetting, fixation clip and two locating rings etc., simplify the structure, and improved integral rigidity, is more convenient to install, debugs and maintenance.Stable through testing this sensor measurement, repeatability and good linearity, the degree of accuracy after temperature compensated is higher.Thoroughly solve the problem that uses inconvenient and maintaining difficulty when existing logger adopts radioactive source density measurement.
Brief description of the drawings
Fig. 1 is the cross-sectional schematic of a kind of density sensor of logging well of the present invention.
Fig. 2 is the right side cross-sectional schematic of a kind of density sensor of logging well of the present invention.
Fig. 3 is the schematic top plan view of a kind of density sensor of logging well of the present invention.
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.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described further.
As Figure 1-3, a kind of well logging of the present invention density sensor, this sensor comprises a pair of high pressure connection 1 for fluid inflow and outflow, platinum resistance temperature sensor 2, fixing 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 entirety, drive a deep trouth at the middle part of 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, the measuring tube detecting 5 is placed in the deep trouth of described shell 4, be fixed in projection 11 by locating ring 9, 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 the centre position of described measuring tube 5, be fixed by fixation clip 8, 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 invention is: provide the pumping signal of the positive feedback after frequency-selecting by secondary instrument, 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, flow out from the other end of measuring tube 5, 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, the computation of Period of vibrating according to measuring tube 5 goes out density, utilize the platinum resistance temperature sensor 2 of pasting on pipeline to measure temperature.
Above one embodiment of the present of invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variation and improvement etc. of doing according to the present patent application scope, within all should still belonging to patent covering scope of the present invention.
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 entirety, drive a deep trouth at the middle part of 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, measuring tube 5 is placed in the deep trouth of described shell, be fixed in projection by locating ring, 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 the centre position of described measuring tube, be fixed by fixation clip, 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, there are four larger fixing holes at two ends, are convenient to described vibrator and are positioned at the adjustment up and down of described the first detector and the second detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172618.6A CN103939087A (en) | 2014-04-25 | 2014-04-25 | Well logging density sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172618.6A CN103939087A (en) | 2014-04-25 | 2014-04-25 | Well logging density sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103939087A true CN103939087A (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410172618.6A Pending CN103939087A (en) | 2014-04-25 | 2014-04-25 | Well logging density sensor |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187721A (en) * | 1977-07-25 | 1980-02-12 | S & F Associates | Method and structure for flow measurement |
| EP0188572B1 (en) * | 1984-07-11 | 1992-01-15 | Exac Corporation | Improved apparatus for mass flow rate and density measurement |
| JPH08278181A (en) * | 1995-04-10 | 1996-10-22 | Yokogawa Electric Corp | Coriolis mass flow meter |
| CN2279590Y (en) * | 1996-06-06 | 1998-04-22 | 中国航空工业总公司太行仪表厂 | Quality flowmeter |
| CN1193733A (en) * | 1996-12-11 | 1998-09-23 | 安德雷斯和霍瑟·弗罗泰克有限公司 | Coriolis mass flow/density sensor with single straight measuring tube |
| US6606917B2 (en) * | 2001-11-26 | 2003-08-19 | Emerson Electric Co. | High purity coriolis mass flow controller |
| CN102797453A (en) * | 2012-08-14 | 2012-11-28 | 北京科力博奥仪表技术有限公司 | Well logging densimeter |
| CN103124897A (en) * | 2010-07-09 | 2013-05-29 | 微动公司 | A vibrating meter including an improved meter case |
| CN103278204A (en) * | 2013-04-27 | 2013-09-04 | 北京航空航天大学 | Micro mass flow sensor with fusion of Coriolis effect and differential pressure effect |
| CN203835372U (en) * | 2014-04-25 | 2014-09-17 | 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 CN201410172618.6A patent/CN103939087A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187721A (en) * | 1977-07-25 | 1980-02-12 | S & F Associates | Method and structure for flow measurement |
| EP0188572B1 (en) * | 1984-07-11 | 1992-01-15 | Exac Corporation | Improved apparatus for mass flow rate and density measurement |
| JPH08278181A (en) * | 1995-04-10 | 1996-10-22 | Yokogawa Electric Corp | Coriolis mass flow meter |
| CN2279590Y (en) * | 1996-06-06 | 1998-04-22 | 中国航空工业总公司太行仪表厂 | Quality flowmeter |
| CN1193733A (en) * | 1996-12-11 | 1998-09-23 | 安德雷斯和霍瑟·弗罗泰克有限公司 | Coriolis mass flow/density sensor with single straight measuring tube |
| US6606917B2 (en) * | 2001-11-26 | 2003-08-19 | Emerson Electric Co. | High purity coriolis mass flow controller |
| CN103124897A (en) * | 2010-07-09 | 2013-05-29 | 微动公司 | A vibrating meter including an improved meter case |
| CN102797453A (en) * | 2012-08-14 | 2012-11-28 | 北京科力博奥仪表技术有限公司 | Well logging densimeter |
| CN103278204A (en) * | 2013-04-27 | 2013-09-04 | 北京航空航天大学 | Micro mass flow sensor with fusion of Coriolis effect and differential pressure effect |
| CN203835372U (en) * | 2014-04-25 | 2014-09-17 | 中国石油集团渤海钻探工程有限公司 | Well logging density sensor |
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Application publication date: 20140723 |
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