CN102797457A - Device and method for precisely calculating well depth based on polarized light - Google Patents
Device and method for precisely calculating well depth based on polarized light Download PDFInfo
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- CN102797457A CN102797457A CN2012102984129A CN201210298412A CN102797457A CN 102797457 A CN102797457 A CN 102797457A CN 2012102984129 A CN2012102984129 A CN 2012102984129A CN 201210298412 A CN201210298412 A CN 201210298412A CN 102797457 A CN102797457 A CN 102797457A
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Abstract
The invention discloses a device and method for precisely calculating the well depth based on polarized light. The device comprises at least one group of photoelectric detectors and a right-angled baffle board (5), wherein each photoelectric detector comprises a transmitter (3) and a receiver (4), the front end of the transmitter (3) is provided with a horizontal optical filter, and the front end of the receiver (4) is provided with a vertical optical filter; and the right-angled baffle board (5) is arranged on a traveling block (2) and used for reflecting horizontal polarized light. The device is very convenient to use, dismount, mount and maintain; the front ends of the transmitters and the receivers are additionally provided with the optical fibers, so that light waves transmitted by the transmitters are distinguished from other light waves, the errors of well depth measurement are reduced, and the accuracy and the reliability of a measured result are improved; in the actual operation process, a great deal of error correction time can be saved due to the great improvement of the well depth measurement precision, so that a great number of intangible expenses are reduced; and the calculated result of the well depth is nearly close to an actual value so as to provide a higher precision guarantee for calculating other parameters.
Description
Technical field
The present invention relates to a kind of device and method based on polarised light accurate Calculation well depth.
Background technology
Well depth is a very important characterising parameter, and its accuracy of measurement is directly connected to many choices in petroleum works field.Overcome the well depth DATA REASONING error that is caused by measuring method, instrument, environment and human factor is the major issue that the oil drilling industry faces always.
At present, commonly used well depth detection mode has through drawworks sensor and measures two kinds of winch rotational angle and photoelectricity real-time detection tourist bus positions.Principle all is to transfer height through measuring tourist bus directly or indirectly, and just the well head drilling tool transfers height indirect calculation well depth.Also can obtain the well depth data in real time through wireless drilling measuring system MWD or LWD in addition, but complete measurement-while-drilling system price is very expensive, seldom use at general wellbore construction scene.
Investigation according to situ of drilling well well depth survey device mode of occupation is found: the winch metering system that (1) is present; Because the wire rope on the winch drum is the stratiform winding structure; The radius size of every circle wire rope is different; The starting point and the terminal point of operating mode have randomness, therefore, confirm that through the length of measuring winch drum corner calculating winch cable there is bigger error in the method for well depth; In addition, drawworks sensor is installed in winch inside, has all brought inconvenience for dismounting, maintenance.(2) device that transmits and receives of photodetector being installed on overhead traveling crane and tourist bus respectively confirms that to survey the tourist bus position traditional detection method of well depth detects the distance weak point; And because attenuation is not obvious; The light wave that receiver can't be distinguished its acceptance is from transmitter or other light sources; Therefore, cause producing the Error Calculation of well depth.
Summary of the invention
The objective of the invention is to solve the deficiency of prior art; Provide a kind of well depth survey cost low; Dismounting and easy to maintenance; Detect distance, guarantee the reliability of the polarised light that receiver receives, the device and method that the well depth survey error is little, accuracy is high through the polarizing filter of setting up based on polarised light accurate Calculation well depth.
The objective of the invention is to realize through following technical scheme: a kind of device based on polarised light accurate Calculation well depth, it comprises:
At least one group of photodetector that is used to detect the tourist bus position, photodetector is made up of transmitter and receiver, and the front end of transmitter is provided with the horizontal direction Filter, and the front end of receiver is provided with the vertical direction Filter;
A right angle reflecting plate that is used for the reflection levels polarised light that is installed on the tourist bus near photodetector one side.
Photodetector of the present invention is located on the derrick.
The size of right angle of the present invention reflecting plate inclined angle alpha equal orthogonal polarized light and horizontal polarization light angle β size 1/2.
The present invention comprises that also is used to write down a drill pipe counter that uses drilling rod quantity.
The present invention comprises that also one is used to control transmitter emission light wave, detects receiver reception light wave and accomplishes the central processor CPU that calculates.
The present invention also comprises a display unit that is used to show well depth result of calculation, and display unit is connected with central processor CPU.
A kind of method based on polarised light accurate Calculation well depth, it may further comprise the steps:
S1: will be installed on the derrick respectively with the transmitter of horizontal direction Filter and the receiver of band vertical direction Filter;
S2: respectively transmitter and receiver are electrically connected with central processor CPU;
S3: central processor CPU control transmitter is constantly launched light wave;
S4: light wave is only launched horizontal polarization light through the optical filtering of horizontal direction Filter;
S5: the right angle reflecting plate is installed on the tourist bus, and the right angle reflecting plate moves up and down under the drive of tourist bus, and when the right angle reflecting plate moved to the position with the transmitter level, right angle baffle reflection horizontal polarization light also reversed 90 ° with its polarization direction;
S6: central processor CPU detects receiving terminal and receives orthogonal polarized light;
S7: central processor CPU calculates well depth.
Well depth H=h*n-h1 of the present invention, wherein, h is the length of every section drilling rod, the drilling rod quantity of n for using, h1 is the setting height(from bottom) of transmitter.
The present invention also comprises a step that shows well depth result of calculation through display unit.
The invention has the beneficial effects as follows:
When (1) needing to measure well depth, can photodetector be installed on the derrick, the right angle reflecting plate is installed on the tourist bus, connecting the control system again can measure, and use, dismounting and maintenance are all very convenient;
(2) set up Filter at the front end of transmitter and receiver; Baffle reflection got into receiver through the right angle again after the light wave that transmitter is emitted filtered through the horizontal direction Filter; Light wave and other light waves that transmitter is sent make a distinction; Guaranteed that receiver receives the reliability of polarised light, reduced the error of well depth survey, improved the degree of accuracy and the reliability of measurement result;
(3) in actual mechanical process,, practiced thrift a large amount of invisible expenditures because the significantly lifting of well depth survey accuracy can be saved a large amount of error correction time;
(4) because the result of calculation of well depth almost approaches actual value, for other CALCULATION OF PARAMETERS provide higher accuracy guarantee.
Description of drawings
Fig. 1 calculates the structural representation of the device of well depth for the present invention;
Fig. 2 calculates the user mode figure of the device of well depth for the present invention;
Fig. 3 is the structural representation of right angle of the present invention reflecting plate;
Among the figure, 1-derrick, 2-tourist bus, 3-transmitter, 4-receiver, 5-right angle reflecting plate.
The specific embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
As shown in Figure 1; A kind of device based on polarised light accurate Calculation well depth; It comprises at least one group of photodetector that is used to detect tourist bus 2 positions, and photodetector is located on the derrick 1, and photodetector is made up of transmitter 3 and receiver 4; The front end of transmitter 3 is provided with the horizontal direction Filter, and the front end of receiver 4 is provided with the vertical direction Filter; A right angle reflecting plate 5 that is used for the reflection levels polarised light that is installed on the tourist bus 2 near photodetector one side.
As shown in Figure 2, well depth H=h*n-h1, wherein, h is the length of every section drilling rod, the drilling rod quantity of n for using, h1 is the setting height(from bottom) of transmitter 3.
As shown in Figure 3, the size of right angle reflecting plate 5 inclined angle alpha equal orthogonal polarized light and horizontal polarization light angle β size 1/2.
It comprises that also is used to write down a drill pipe counter that uses drilling rod quantity; One is used to control transmitter 3 emission light waves, detects receiver 4 reception light waves and accomplishes central processor CPU and display unit that is used to show well depth result of calculation of calculating, and display unit is connected with central processor CPU.
A kind of method based on polarised light accurate Calculation well depth, it may further comprise the steps:
S1: will be installed in respectively on the derrick 1 with the transmitter 3 of horizontal direction Filter and the receiver 4 of band vertical direction Filter;
S2: respectively transmitter 3 and receiver 4 are electrically connected with central processor CPU;
S3: central processor CPU control transmitter 3 is the emission light wave constantly;
S4: light wave is only launched horizontal polarization light through the optical filtering of horizontal direction Filter;
S5: right angle reflecting plate 5 is installed on the tourist bus 2, and right angle reflecting plate 5 moves up and down under the drive of tourist bus 2, and when right angle reflecting plate 5 moved to the position with transmitter 3 levels, reflecting plate 5 reflection levels polarised lights in right angle also reversed 90 ° with its polarization direction;
S6: central processor CPU detects receiving terminal 4 and receives orthogonal polarized light;
S7: central processor CPU calculates well depth.
It also comprises a step that shows well depth result of calculation through display unit.
Claims (9)
1. device based on polarised light accurate Calculation well depth, it is characterized in that: it comprises:
At least one group of photodetector that is used to detect tourist bus (2) position, photodetector is made up of transmitter (3) and receiver (4), and the front end of transmitter (3) is provided with the horizontal direction Filter, and the front end of receiver (4) is provided with the vertical direction Filter;
One is installed on tourist bus (2) and goes up the right angle reflecting plate (5) that is used for the reflection levels polarised light near photodetector one side.
2. a kind of device based on polarised light accurate Calculation well depth according to claim 1 is characterized in that: described photodetector is located on the derrick (1).
3. a kind of device based on polarised light accurate Calculation well depth according to claim 1 is characterized in that: the size of described right angle reflecting plate (5) inclined angle alpha equal orthogonal polarized light and horizontal polarization light angle β size 1/2.
4. a kind of device based on polarised light accurate Calculation well depth according to claim 1 is characterized in that: it comprises that also is used to write down a drill pipe counter that uses drilling rod quantity.
5. a kind of device based on polarised light accurate Calculation well depth according to claim 1 is characterized in that: it comprises that also one is used to control transmitter (3) emission light wave, detects receiver (4) reception light wave and accomplishes the central processor CPU that calculates.
6. a kind of device based on polarised light accurate Calculation well depth according to claim 1 is characterized in that: it also comprises a display unit that is used to show well depth result of calculation, and display unit is connected with central processor CPU.
7. method based on polarised light accurate Calculation well depth, it is characterized in that: it may further comprise the steps:
S1: will be installed in respectively on the derrick (1) with the transmitter (3) of horizontal direction Filter and the receiver (4) of band vertical direction Filter;
S2: respectively transmitter (3) and receiver (4) are electrically connected with central processor CPU;
S3: central processor CPU control transmitter (3) is constantly launched light wave;
S4: light wave is only launched horizontal polarization light through the optical filtering of horizontal direction Filter;
S5: right angle reflecting plate (5) is installed on the tourist bus (2); Right angle reflecting plate (5) moves up and down under the drive of tourist bus (2); When right angle reflecting plate (5) moved to the position with transmitter (3) level, right angle reflecting plate (5) reflection levels polarised light also reversed 90 ° with its polarization direction;
S6: central processor CPU detects receiving terminal (4) and receives orthogonal polarized light;
S7: central processor CPU calculates well depth.
8. a kind of method based on polarised light accurate Calculation well depth according to claim 7 is characterized in that: described well depth H=h*n-h1, and wherein, h is the length of every section drilling rod, the drilling rod quantity of n for using, h1 is the setting height(from bottom) of transmitter (3).
9. a kind of method based on polarised light accurate Calculation well depth according to claim 7 is characterized in that: it also comprises a step that shows well depth result of calculation through display unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210298412.9A CN102797457B (en) | 2012-08-21 | 2012-08-21 | A kind of device and method based on polarised light accurate Calculation well depth |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210298412.9A CN102797457B (en) | 2012-08-21 | 2012-08-21 | A kind of device and method based on polarised light accurate Calculation well depth |
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| CN102797457A true CN102797457A (en) | 2012-11-28 |
| CN102797457B CN102797457B (en) | 2015-08-26 |
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Cited By (3)
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| CN105735972A (en) * | 2016-03-11 | 2016-07-06 | 中国石油天然气集团公司 | System for measuring, recording and processing depth of downhole tool for resource exploration and development |
| CN111101902A (en) * | 2019-10-25 | 2020-05-05 | 天水电气传动研究所集团有限公司 | Method for re-confirming height protection of traveling block of oil drilling rig |
| CN111101928A (en) * | 2019-12-30 | 2020-05-05 | 西安国仪测控股份有限公司 | Well depth measuring system and method |
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Cited By (4)
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|---|---|---|---|---|
| CN105735972A (en) * | 2016-03-11 | 2016-07-06 | 中国石油天然气集团公司 | System for measuring, recording and processing depth of downhole tool for resource exploration and development |
| CN111101902A (en) * | 2019-10-25 | 2020-05-05 | 天水电气传动研究所集团有限公司 | Method for re-confirming height protection of traveling block of oil drilling rig |
| CN111101902B (en) * | 2019-10-25 | 2022-04-12 | 天水电气传动研究所集团有限公司 | Method for re-confirming height protection of traveling block of oil drilling rig |
| CN111101928A (en) * | 2019-12-30 | 2020-05-05 | 西安国仪测控股份有限公司 | Well depth measuring system and method |
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| CN102797457B (en) | 2015-08-26 |
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Address after: 610036 Sichuan city of Chengdu province Jinniu District Yingbin Road Information Park Road No. 99 Applicant after: SICHUAN HONGHUA ELECTRIC CO., LTD. Address before: 610036 Sichuan city of Chengdu province Jinniu District Yingbin Road Information Park Road No. 99 Applicant before: Chengdu Hongtian Electric Drive Engineering Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: CHENGDU HONGTIAN TELEX ENGINEERING CO., LTD. TO: SICHUAN HONGHUA ELECTRIC CO., LTD. |
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Effective date of registration: 20170103 Address after: 610041 Sichuan City, Chengdu province high tech Zone, Century City Road, No. 5, -1 floor, No. 6, layer Patentee after: Sichuan Ai Rui Zhixin Technology Co. Ltd. Address before: 610036 Sichuan city of Chengdu province Jinniu District Yingbin Road Information Park Road No. 99 Patentee before: SICHUAN HONGHUA ELECTRIC CO., LTD. |
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Effective date of registration: 20190812 Address after: 610000 East Road, Yingbin Avenue Information Park, Jinniu District, Chengdu, Sichuan Province Patentee after: SICHUAN HONGHUA ELECTRIC CO., LTD. Address before: 610041 Sichuan City, Chengdu province high tech Zone, Century City Road, No. 5, -1 floor, No. 6, layer Patentee before: Sichuan Ai Rui Zhixin Technology Co. Ltd. |
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