CN105203429A - Slurry density sensor - Google Patents
Slurry density sensor Download PDFInfo
- Publication number
- CN105203429A CN105203429A CN201410286043.0A CN201410286043A CN105203429A CN 105203429 A CN105203429 A CN 105203429A CN 201410286043 A CN201410286043 A CN 201410286043A CN 105203429 A CN105203429 A CN 105203429A
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- China
- Prior art keywords
- slurry
- membranes
- pressure
- sensing heads
- differential pressure
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- Measuring Fluid Pressure (AREA)
Abstract
A slurry density sensor is used for measuring slurry density in oilfield drilling. A differential pressure transmitter is arranged at the top of a fixing support, pressure pipeline connectors on the differential pressure transmitter are connected with two sensing heads through pressure pipelines, the two sensing heads are arranged at the bottom of the fixing support, pressure membranes are arranged in the sensing heads, isolating protecting covers are arranged outside the sensing heads, and each isolating protecting cover is provided with a plurality of through holes. The slurry density sensor has the advantages that the large-size remote transmission membranes are adopted for the sensor, so that while measurement accuracy is improved, influences of slurry viscosity on measurement are eliminated; besides, the isolating protecting covers are installed outside the membranes, so that influences of slurry flow speed on measurement are eliminated, and the risk that slurry cakes damage the membranes is effectively avoided.
Description
Technical field
The present invention is used for the measurement to mud density in oil drilling.
Background technology
Drilling mud is the blood of oil drilling, plays very important effect in drilling operation.Pressure column and the reservoir pressure of the stratum drilling mud drilled average out, and therefore the proportioning of mud balance has strict requirement.So mud density monitoring will be strengthened all along in drilling process, to ensure carrying out smoothly of drilling well.The traditional requirement of differential density sensor to measured liquid is higher.First diaphragm is easily by the impact of mud viscosity; Secondly because the mud in suction pit is when carrying out stirring and being in the milk, mud is all often flowing, and when mud speed rate is very fast, huge measuring error often appears in sensor.
Summary of the invention
The object of this invention is to provide a kind of mud weight sensor, solve mud viscosity to the image measured, improve measuring accuracy.
In order to achieve the above object, the technical solution used in the present invention is:
A kind of mud weight sensor; it is characterized in that: be provided with differential pressure transmitter at fixed support top; pressure line interface on differential pressure transmitter is arranged on two inductive heads bottom fixed support by pressure line connection; pressure-sensitive diaphragm is provided with in described inductive head; its outside is provided with insulation blocking cover, and insulation blocking cover is provided with some through holes.
Distance between above-described two inductive heads is 300mm.
The invention has the beneficial effects as follows, sensor have employed large scale remote transmitting diaphragm, can eliminate again mud viscosity to the impact of measuring while improving measuring accuracy; In addition we have installed insulation blocking cover outside diaphragm, are effectively eliminating mud speed rate to outside the impact of measuring, also effectively prevent the danger of mud caking damage diaphragm.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1. differential pressure transmitter; 2. pressure line interface; 3. fixed support; 4. insulation blocking cover; 5. pressure-sensitive diaphragm; 6. through hole; 7. inductive head.
Embodiment
From accompanying drawing 1; the present invention is provided with differential pressure transmitter 1 at fixed support top; pressure line interface 2 on differential pressure transmitter 1 is arranged on two inductive heads 7 bottom fixed support 3 by pressure line connection; pressure-sensitive diaphragm 5 is provided with in described inductive head 7; its outside is provided with insulation blocking cover 4, and insulation blocking cover 4 is provided with some through holes 6.Adopt two large scale pressure-sensitive diaphragms 5 in the present invention, and be fixedly installed on fixed support 3, and form the difference in height of 300mm.When mud submergence two diaphragms, the pressure detected is sent to differential pressure transmitter 1 by silicone oil through pressure line by two large scale teletransmission pressure-sensitive diaphragms 5 respectively.Require vertical fixing when the present invention installs, income value is that the gravitational difference produced by fluid column carrys out bulk density, △ P=ρ gh, and because h is fixed as 300mm, the differential pressure value that differential pressure transmitter 1 is measured just obtains mud density value divided by acceleration of gravity and length.
Claims (2)
1. a mud weight sensor; it is characterized in that: be provided with differential pressure transmitter at fixed support top; pressure line interface on differential pressure transmitter is arranged on two inductive heads bottom fixed support by pressure line connection; pressure-sensitive diaphragm is provided with in described inductive head; its outside is provided with insulation blocking cover, and insulation blocking cover is provided with some through holes.
2. mud weight sensor according to claim 1, is characterized in that: the distance between two described inductive heads is 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286043.0A CN105203429A (en) | 2014-06-25 | 2014-06-25 | Slurry density sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286043.0A CN105203429A (en) | 2014-06-25 | 2014-06-25 | Slurry density sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105203429A true CN105203429A (en) | 2015-12-30 |
Family
ID=54951226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410286043.0A Pending CN105203429A (en) | 2014-06-25 | 2014-06-25 | Slurry density sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105203429A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654203A (en) * | 2017-09-28 | 2018-02-02 | 中石化石油工程技术服务有限公司 | Drilling hydraulic differential density sensor current stabilization bogey |
| CN111335872A (en) * | 2020-03-20 | 2020-06-26 | 天津欣海石油工程技术有限公司 | Drilling fluid density sensor for petroleum engineering |
| CN114354443A (en) * | 2022-01-10 | 2022-04-15 | 思立博(上海)工程咨询有限公司 | Differential pressure type digital display mud proportion detection device |
| CN116337685A (en) * | 2023-05-29 | 2023-06-27 | 胜利油田胜油测录工程技术有限公司 | Mud density measuring device with cleaning function for petroleum logging |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036667U (en) * | 1988-08-05 | 1989-04-26 | 华北石油管理局钻井工艺研究所 | Floating air-blown type differential densimeter |
| CN101271054A (en) * | 2008-04-30 | 2008-09-24 | 马兆辉 | Fluid closed loop type on-line liquid density transmitter |
| CN201535743U (en) * | 2009-12-01 | 2010-07-28 | 马兆辉 | Fluid closed-ring type integrated on-line liquid concentration transducer |
| CN201555784U (en) * | 2009-12-01 | 2010-08-18 | 马兆辉 | Short probe rod fluid closed loop type all-in-one on-line liquid density test transmitter |
| CN103604473A (en) * | 2013-11-26 | 2014-02-26 | 哈尔滨理大晟源科技开发有限公司 | Wedge-shaped flowmeter and installation method |
-
2014
- 2014-06-25 CN CN201410286043.0A patent/CN105203429A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036667U (en) * | 1988-08-05 | 1989-04-26 | 华北石油管理局钻井工艺研究所 | Floating air-blown type differential densimeter |
| CN101271054A (en) * | 2008-04-30 | 2008-09-24 | 马兆辉 | Fluid closed loop type on-line liquid density transmitter |
| CN201535743U (en) * | 2009-12-01 | 2010-07-28 | 马兆辉 | Fluid closed-ring type integrated on-line liquid concentration transducer |
| CN201555784U (en) * | 2009-12-01 | 2010-08-18 | 马兆辉 | Short probe rod fluid closed loop type all-in-one on-line liquid density test transmitter |
| CN103604473A (en) * | 2013-11-26 | 2014-02-26 | 哈尔滨理大晟源科技开发有限公司 | Wedge-shaped flowmeter and installation method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654203A (en) * | 2017-09-28 | 2018-02-02 | 中石化石油工程技术服务有限公司 | Drilling hydraulic differential density sensor current stabilization bogey |
| CN107654203B (en) * | 2017-09-28 | 2024-03-05 | 中石化石油工程技术服务股份有限公司 | Steady flow bearing device for drilling fluid pressure difference type density sensor |
| CN111335872A (en) * | 2020-03-20 | 2020-06-26 | 天津欣海石油工程技术有限公司 | Drilling fluid density sensor for petroleum engineering |
| CN114354443A (en) * | 2022-01-10 | 2022-04-15 | 思立博(上海)工程咨询有限公司 | Differential pressure type digital display mud proportion detection device |
| CN116337685A (en) * | 2023-05-29 | 2023-06-27 | 胜利油田胜油测录工程技术有限公司 | Mud density measuring device with cleaning function for petroleum logging |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151230 |