CN102134990B - Cement head magnetic induction rubber plug indicator - Google Patents
Cement head magnetic induction rubber plug indicator Download PDFInfo
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- CN102134990B CN102134990B CN 201110046143 CN201110046143A CN102134990B CN 102134990 B CN102134990 B CN 102134990B CN 201110046143 CN201110046143 CN 201110046143 CN 201110046143 A CN201110046143 A CN 201110046143A CN 102134990 B CN102134990 B CN 102134990B
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Abstract
The invention discloses a cement head magnetic induction rubber plug indicator, which comprises a top cover, a cement head body and a lower joint. A detection section is arranged between the cement head body and the lower joint; the cement head body is provided with a spiral stop bin which stretches into the cement head body; a well cementing rubber plug which is limited by the spiral stop bin is arranged in the cement head body; a magnet is arranged on the well cementing rubber plug; and the detection section is provided with a magnetic sensor which is connected to a secondary instrument. The rubber plug is not in mechanical hard contact with a cement head when passing through the cement head, so the rubber plug cannot be damaged; and a magnetic field is taken as a medium, the magnetic induction sensor senses the downward movement of the rubber plug, and a detection signal is contactless and has high accuracy and reliability.
Description
Technical field
Plug is from the cementing head magnetic induction plug indicator of cementing head by situation when the present invention relates to be used in a kind of oil and gas exploitation process detecting well cementation.
Background technology
Cementing head and plug are wellhead assemblies necessary in the cementing operation operation.Usually, plug is contained in the cementing head, the cementing head lower end is connected on the sleeve pipe or drilling rod of well, the both sides is provided with bypass, connects the construction pipeline, is used for cementing and replaces mud etc., last bypass is mainly used in the moulding plug, simultaneously, be provided with annexes such as backing pin and pressure gauge connection, its effect comes down to an epitome of whole well shaft fixing technology.During cementing operation, interior dress plug is when needing to drop into plug, open the shelves pin, discharge plug, switch gate, inject tamponade liquid from last bypass, plug is replaced in sleeve pipe or the drilling rod, and when putting in place for the slurry amount, plug runs to the bruising position of design, operation is obstructed suddenly, operation pressure sharply increases, and shows to annotate for cement paste to finish, and constructs successfully.For example, the novel bottom plug indicator of the disclosed cementing-head device of China Patent No. " 03258050.9 ", its applying date is on July 14th, 2003, notice of authorization day is on July 21st, 2004.
Existing cementing head plug indicator mainly is mechanical type plug indicator.Mechanical type plug indicator is that the indicating arm that relies on plug to promote on the indicator turns an angle to realize indicative function.Need open the hole at cementing head, mechanical indicating mechanism is set, can detect plug by situation, be used for guiding construction for slurry, be conducive to guiding construction, improve the accuracy of constructing operation.But mechanical type plug indicator has several shortcomings: one, the plug that passes through is had certain resistance, may damage plug.Two, mechanical type plug indicator can increase and makes the cementing head volume and weight, is unfavorable for transportation and stores.Three, mechanical type plug indicator also need perforate on the cementing head body, reduced the stressed sectional area of wall, cause that mean stress increases and vessel strength weakens, but also it is concentrated to produce stress in aperture area, makes the opening-nozzle place of cementing head become the beginning knick point of fatigue failure or brittle fracture.Four, mechanical type plug indicator is because structural reason needs activity rubber seal flexibly, so must maintain the labor intensive material resources after each the use.
Summary of the invention
The objective of the invention is to overcome the problems referred to above that existing cementing head plug indicator exists, a kind of cementing head magnetic induction plug indicator is provided, plug of the present invention does not have the hard contact of machinery during by cementing head, can damaged, and by magnetic field as medium, respond to the descending of plug by magnetic induction sensor, detection signal is contactless, precision is high, reliability is high.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of cementing head magnetic induction plug indicator, comprise top cover, cementing head body and lower contact, it is characterized in that: be provided with detection segment between described cementing head body and the lower contact, the cementing head body is provided with and stretches into the intrinsic spiral backing pin of cementing head, be provided with in the cementing head body by the spacing cementing plug of spiral backing pin, cementing plug is provided with magnet, and detection segment is provided with magnetic sensor, and magnetic sensor is connected to secondary meter.
Described cementing head body is provided with two plug valves that connected and be arranged in parallel by pipeline, and the pipeline between two plug valves is provided with union.
Described detection segment is connected by the union nut with lower contact.
Described magnetic sensor is one or more.
Described magnet is magnetic patch or magnet steel.
Described secondary meter comprises main frame, the lithium battery that is connected with main frame respectively, sensor mainboard and alarm module, and alarm module is connected with buzzer, indicator lamp and ann reset switch.
Also be connected with lightning-protection module by cable between the cable that described lithium battery and main frame connect.
Employing the invention has the advantages that:
One, among the present invention, between cementing head body and lower contact, be provided with detection segment, the cementing head body is provided with and stretches into the intrinsic spiral backing pin of cementing head, be provided with in the cementing head body by the spacing cementing plug of spiral backing pin, cementing plug is provided with magnetic patch, detection segment is provided with magnetic sensor, magnetic sensor is connected to secondary meter, adopt this structure compared with prior art, plug of the present invention does not have the hard contact of machinery during by cementing head, can damaged, and reusable component such as magnetic sensor and secondary meter can not contact with working solution, not fragile, and maintenance cycle is short, expense is low, in plug the prepackage magnet, by magnetic field as medium, respond to the descending of plug by magnetic induction sensor, detection signal is contactless, the precision height, the reliability height.
Two, among the present invention, the cementing head body is provided with two plug valves that connected and be arranged in parallel by pipeline, and the pipeline between two plug valves is provided with union, adopts this structure to be easy to control and maintenance, has improved the reliability of whole device.
Three, among the present invention, detection segment is connected by the union nut with lower contact, and adopting the union nut to connect has increased the reliability that connects, and is easy to installation and removal, and safe, light, reliable, is convenient to instruct site operation
Four, among the present invention, magnetic sensor is one or more, can select according to actual condition, and the accuracy that detects when a plurality of is higher.
Five, compared with prior art, it is descending that the present invention adopts magnetic sensor to detect cementing plug, need perforate in addition on the cementing head body, thus increased the intensity of cementing head body.
Six, the present invention detects plug by the cementing head situation by the variation that detects magnetic sensor riding position place magnetic field intensity, the cementing plug that passes through is not produced resistance, guaranteed the application life of cementing plug, and this kind frame mode can not increase makes the cementing head volume and weight, be conducive to transportation and storage, and do not need all to maintain after each the use, reduced expending of manpower and materials.
Description of drawings
Fig. 1 is structural representation of the present invention
Fig. 2 is the schematic diagram of secondary meter of the present invention
Be labeled as among the figure: 1, top cover, 2, plug valve, 3, the cementing head body, 4, union, 5, union nut, 6, lower contact, 7, magnetic patch, 8, cementing plug, 9, the spiral backing pin, 10, magnetic sensor, 11, secondary meter, 12, main frame, 13, the sensor mainboard, 14, alarm module, 15, the ann reset switch, 16, buzzer, 17, indicator lamp, 18, lithium battery, 19, lightning-protection module.
The specific embodiment
A kind of cementing head magnetic induction plug indicator, comprise top cover, cementing head body and lower contact, be provided with detection segment between described cementing head body and the lower contact, the cementing head body is provided with and stretches into the intrinsic spiral backing pin of cementing head, be provided with in the cementing head body by the spacing cementing plug of spiral backing pin, as shown in Figure 1, the spiral backing pin stretches in the cementing head body spacing to cementing plug from the cementing head body.Be set with magnet on the cementing plug, detection segment is provided with magnetic sensor, and magnetic sensor is connected to secondary meter.Detect cementing plug by the situation of cementing head by the variation that detects magnetic sensor riding position place magnetic field intensity.
Preferred embodiment of the present invention is, is provided with two plug valves that connected and be arranged in parallel by pipeline at the cementing head body, and the pipeline between two plug valves is provided with union.
Another preferred embodiment of the present invention is that described detection segment is connected by the union nut with lower contact.
Among the present invention, magnetic sensor is one or more, is evenly distributed on the detection segment when a plurality of.Magnet is magnetic patch or magnet steel in addition.Best mode is for selecting kicker magnet, for example strong magnetic of neodymium iron boron.
The present invention installs a magnet steel at cementing plug, detection segment under the cementing head body is installed a cover magnetic sensor, during cementing head chamber body that magnet steel is laid by magnetic sensor along with cementing plug, the magnet steel cutting magnetic line produces the process of a magnetic field enhancing, then the detected enhancing peak signal of magnetic sensor is converted to acousto-optic hint, represent d/d the plug mobile and position by magnetic sensor, when cementing plug moves downward away from this position, signal weakens rapidly, until disappearance, last magnetic sensor induction is less than any original specific magnetic line of force, secondary meter also will produce light and buzzer and point out this moment, inform that cementing plug successfully goes into well smoothly.
Magnetic sensor is connected with secondary meter by data wire, secondary meter is secondary meter of the prior art, as shown in Figure 2, comprise that lithium battery, ann reset switch, buzzer, indicator lamp, function software, alarm module, lightning-protection module, operating system module are main frame, magnetic sensor is connected with main frame by sensor assembly.Whole testing process is: application software gather the magnetic sensor magnetic field strength date and with set the alarm threshold value relatively, when image data when setting the alarm threshold value, the application software output alarm signal is to alarm module.Alarm module output switching value signal enabling audible-visual annunciator.
Magnetic patch 7 is installed on the cementing plug 8, detection segment under cementing head body 3 is installed two cover magnetic sensors 10, the cementing plug 8 that magnetic patch 7 will be installed is in advance packed in the cementing head body, the spiral backing pin 9 of opening cementing head when construction needs discharges cementing plugs 8 when going into well, magnetic block 7 will be along with the position of cementing plug by magnetic sensor 10, the process of a magnetic field enhancing will appear in magnetic force line cutting this moment, magnetic sensor will in time be transferred to the signal of this enhancing in the secondary meter 11, so secondary meter 11 just can be with light and the prompting of buzzer sound, represent that d/d cementing plug 8 is moving and passing through the position of magnetic sensor 10, after cementing plug 8 is released and goes into well by lower contact 6 along sleeve pipe, magnetic block 7 will move downward with cementing plug 8 and leave cementing head, magnetic sensor 10 inductions are less than any original specific magnetic line of force, the secondary meter 11 of this moment also will be in time with light and buzzer prompting, inform that cementing plug successfully goes into well smoothly.So far, the cementing plug indicator has just been finished and has once been judged and show whether cementing plug 8 goes into whole work of well.
Claims (4)
1. cementing head magnetic induction plug indicator, comprise top cover, cementing head body and lower contact, it is characterized in that: be provided with detection segment between described cementing head body and the lower contact, the cementing head body is provided with and stretches into the intrinsic spiral backing pin of cementing head, be provided with in the cementing head body by the spacing cementing plug of spiral backing pin, cementing plug is provided with magnet, and detection segment is provided with magnetic sensor, and magnetic sensor is connected to secondary meter; Described cementing head body is provided with two plug valves that connected and be arranged in parallel by pipeline, and the pipeline between two plug valves is provided with union; Described detection segment is connected by the union nut with lower contact; Described magnetic sensor is one or more.
2. cementing head magnetic induction plug indicator according to claim 1, it is characterized in that: described magnet is magnetic patch or magnet steel.
3. cementing head magnetic induction plug indicator according to claim 1, it is characterized in that: described secondary meter comprises main frame, the lithium battery that is connected with main frame respectively, sensor mainboard and alarm module, and alarm module is connected with buzzer, indicator lamp and ann reset switch.
4. cementing head magnetic induction plug indicator according to claim 3 is characterized in that: also be connected with lightning-protection module by cable between the cable that described lithium battery and main frame connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110046143 CN102134990B (en) | 2011-02-25 | 2011-02-25 | Cement head magnetic induction rubber plug indicator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110046143 CN102134990B (en) | 2011-02-25 | 2011-02-25 | Cement head magnetic induction rubber plug indicator |
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| CN102134990A CN102134990A (en) | 2011-07-27 |
| CN102134990B true CN102134990B (en) | 2013-08-28 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953707B (en) * | 2012-11-13 | 2015-07-08 | 中国石油化工股份有限公司 | Top-drive drill rod well cementing head |
| CN103953311A (en) * | 2014-04-18 | 2014-07-30 | 西安航威石化设备有限公司 | Internal balanced type well cementation cement head |
| CN104594851B (en) * | 2015-02-02 | 2017-02-01 | 中国石油集团渤海钻探工程有限公司 | Intelligent well cementing equipment |
| CN105971591B (en) * | 2016-07-22 | 2019-05-17 | 中国海洋石油总公司 | Cementing head and indicator thereon |
| CN115949365B (en) * | 2023-03-14 | 2023-05-26 | 山东健源石油工程技术有限公司 | Pressure-bearing leakage-proof drill rod cement head and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2642987Y (en) * | 2003-08-29 | 2004-09-22 | 杨全盛 | Casing well cementing cementing-head |
| CN201144665Y (en) * | 2007-12-16 | 2008-11-05 | 山东赛瓦石油工具服务有限公司 | High-pressure pipe joint union backing pin type cement head |
| CN201610732U (en) * | 2010-02-05 | 2010-10-20 | 王显诚 | Integrated cyclone large-chamber bypass valve pipe assembling type cement head |
| CN201738871U (en) * | 2010-06-17 | 2011-02-09 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Anti-rotating well cementation rubber stopper with self-locking mechanism |
| CN201991523U (en) * | 2011-02-25 | 2011-09-28 | 中国石油集团川庆钻探工程有限公司 | Magnetic induction rubber plug indicator for cement head |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6789619B2 (en) * | 2002-04-10 | 2004-09-14 | Bj Services Company | Apparatus and method for detecting the launch of a device in oilfield applications |
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2011
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2642987Y (en) * | 2003-08-29 | 2004-09-22 | 杨全盛 | Casing well cementing cementing-head |
| CN201144665Y (en) * | 2007-12-16 | 2008-11-05 | 山东赛瓦石油工具服务有限公司 | High-pressure pipe joint union backing pin type cement head |
| CN201610732U (en) * | 2010-02-05 | 2010-10-20 | 王显诚 | Integrated cyclone large-chamber bypass valve pipe assembling type cement head |
| CN201738871U (en) * | 2010-06-17 | 2011-02-09 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Anti-rotating well cementation rubber stopper with self-locking mechanism |
| CN201991523U (en) * | 2011-02-25 | 2011-09-28 | 中国石油集团川庆钻探工程有限公司 | Magnetic induction rubber plug indicator for cement head |
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| CN102134990A (en) | 2011-07-27 |
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Effective date of registration: 20200915 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Co-patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: The 1 section of No. 3 company Chuanqing Drilling Technology Information Office Chenghua District Green Road 610051 Chengdu City, Sichuan Province Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |