CN203476312U - Measurement while drilling probe pipe - Google Patents
Measurement while drilling probe pipe Download PDFInfo
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- CN203476312U CN203476312U CN201320391759.8U CN201320391759U CN203476312U CN 203476312 U CN203476312 U CN 203476312U CN 201320391759 U CN201320391759 U CN 201320391759U CN 203476312 U CN203476312 U CN 203476312U
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- measurement
- tool
- face
- drilling
- pipe nipple
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Abstract
The utility model relates to a measurement while drilling probe pipe, comprising a probe pipe joint, a probe pipe protective drum, a power supply module, a control module and a measure short joint; the probe pipe joint is arranged at one end of the probe pipe protective drum and receives the supply of an external power supply; the power supply module, the control module and the measure short joint are fixed in the probe pipe protective drum; the power supply module is used for performing level conversion on the external power supply and powering the control module and the measure short joint; a tri-axis accelerometer for measuring the earth gravitational field and a tri-axis magnetic flux door for measuring the geomagnetic field are arranged in the measure short joint; the control module is connected with the measure short joint for collecting the data collected by the measure short joint, calculating the tool surface data of the measure short joint, then coding the tool surface data and outwards sending a control level signal with the coded data by the probe pipe joint. The measurement while drilling probe pipe can realize the high-precision measurement and the high-precision transmission of a tool surface, and can meet the measurement demands of a tool surface dynamic control system and other similar systems of an underground oriented power drilling jig.
Description
Technical field
The utility model relates to a kind of measurement while drilling device, is specifically related to a kind of measurement while drilling exploring tube that can realize high-acruracy survey and the high rate data transmission of downhole tool face, belongs to petroleum exploration field.
Background technology
At present, MWD (Measure While Drilling, the measurement while drilling) system of generally using in oil drilling is mainly used in realizing the measurement of hole deviation, orientation and drilling tool face.Use the underground work of conventional mwd system, tool-face certainty of measurement is not high, (conventional mwd system tool-face certainty of measurement is ± 2.8 ° to transfer rate slowly, transfer rate is to upgrade once for 14 seconds), in the less demanding situation of efficiency, also can meet general control requirement, but be difficult to meet dynamic requirement of real-time control.
Downhole orientation power drilling tool tool-face kinetic-control system is a set of drillng operation automatic control system.Automatically the object of controlling in order to reach closed loop, this system needs ground to realize the high-precision drilling tool face that obtains rapidly, the needed tool-face precision of downhole orientation power drilling tool tool-face kinetic-control system is ± 0.1 °, and tool-face transfer rate will obviously be better than conventional mwd system.
As can be seen here, conventional mwd system tool-face certainty of measurement cannot reach the requirement of downhole orientation power drilling tool tool-face kinetic-control system.And in order to improve the certainty of measurement of downhole tool face, the transmission length of tool-face data must increase, but can cause transfer rate slack-off, thereby affect the realtime control of downhole orientation power drilling tool tool-face kinetic-control system.Therefore, downhole orientation power drilling tool tool-face kinetic-control system is that conventional mwd system cannot meet to the precision of downhole tool planar survey and transmission rate request.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide the measurement while drilling exploring tube of high-acruracy survey and the high rate data transmission that can realize downhole tool face, can meet downhole orientation power drilling tool tool-face kinetic-control system to the certainty of measurement of downhole tool face and transmission rate request.
For achieving the above object, the utility model is taked following technical scheme: a kind of measurement while drilling exploring tube, it is characterized in that, and this measurement while drilling exploring tube comprises inserting tube joint, inserting tube protection cylinder, power module, control module and measurement pipe nipple; Described inserting tube joint is arranged at one end of described inserting tube protection cylinder, and described inserting tube joint receives external power source and supplies with; Described power module, control module and measurement pipe nipple are all fixed on described inserting tube and protect cylinder inner, and described power module is used for external power source realize level conversion and power to described control module and measurement pipe nipple; In described measurement pipe nipple, dispose three axis fluxgates that add table and measure earth's magnetic field for measuring three axles of earth gravitational field; Described control module is connected with described measurement pipe nipple, be used for gathering the data that described measurement pipe nipple measures the tool-face data that calculate described measurement pipe nipple, then described tool-face data encoded and to outside, send out the control level signal with coded data by described inserting tube joint.
In a preferred embodiment, described power module can receive direct current supply and three-phase alternating-current powered.
In a preferred embodiment, it is three mutually perpendicular acceleration transducers of sensitive direction that described three axles add table, and its certainty of measurement is 1 ‰ G, and wherein G is 9.8m/s
2.
In a preferred embodiment, described three axis fluxgates employing certainties of measurement are the high-precision fluxgate of 0.1 μ T.
The utility model is owing to taking above technical scheme, it has the following advantages: certainty of measurement that 1, measurement pipe nipple of the present utility model is integrated is that the high accuracy of 1 ‰ G adds table and certainty of measurement is the high-precision fluxgate of 0.1 μ T, while adding table and high-precision fluxgate calculating gravity tool-face and magnetic tool-face by this high accuracy, can guarantee ± the tool-face certainty of measurement of 0.1 °.2, control module of the present utility model adopts novel coding mode when tool-face data are encoded, thereby can, when guaranteeing tool-face certainty of measurement, guarantee the transfer rate of tool-face.3, power module can receive direct current supply and three-phase alternating-current powered, makes measurement while drilling exploring tube go for various underground work condition.As can be seen here, high-acruracy survey and high rate data transmission that the utility model can implementation tool face, can meet the measurement requirement of downhole orientation power drilling tool tool-face kinetic-control system and other similar systems.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model measurement while drilling exploring tube;
Fig. 2 is a kind of coding interval division of the utility model measurement while drilling exploring tube;
Fig. 3 is a kind of data sequence form of the utility model measurement while drilling exploring tube.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
Fig. 1 has shown measurement while drilling exploring tube 100 of the present utility model, and this measurement while drilling exploring tube 100 comprises inserting tube joint 1, inserting tube protection cylinder 2, power module 3, control module 4 and measures pipe nipple 5.Inserting tube joint 1 is arranged at one end of inserting tube protection cylinder 2, and this inserting tube joint 1 is the interface that measurement while drilling exploring tube 100 is connected with external signal, and measurement while drilling exploring tube 100 receives external power source by inserting tube joint 1 and supplies with.Inserting tube protection cylinder 2 is high voltage bearing without magnetic metal cylinder, is used for holding and protects inner power module 3, control module 4 and measure pipe nipple 5.Power module 3, control module 4 and measurement pipe nipple 5 are all fixed on inserting tube protection cylinder 2 inside, and wherein power module 3 is used for receiving external power source and supplies with and realize level conversion, to power to control module 4 and measurement pipe nipple 5.In measurement pipe nipple 5, dispose three axles and add table and three axis fluxgate (not shown)s, be used for respectively measuring earth gravitational field and earth's magnetic field, and the data that measure are converted to DC level.Control module 4 is connected with measurement pipe nipple 5, is used for gathering DC level the calculating of measuring pipe nipple 5 outputs.Obtain measuring the tool-face data of pipe nipple 5, then tool-face data encoded and by inserting tube joint 1, to outside, send out the control level signal with coded data.
In a preferred embodiment, power module 3 can receive direct current supply and three-phase alternating-current powered, makes measurement while drilling exploring tube 100 go for various underground work condition.
In a preferred embodiment, three axles add table and refer to three mutually perpendicular acceleration transducers of sensitive direction, and it can adopt certainty of measurement is that (G is 9.8m/s to 1 ‰ G
2) high accuracy add table, when adding table and calculate gravity tool-face by this high accuracy, can guarantee ± the tool-face certainty of measurement of 0.1 °.
In a preferred embodiment, it is the high-precision fluxgate of 0.1 μ T that three axis fluxgates can adopt certainty of measurement, while calculating magnetic tool-face by this high-precision fluxgate, can guarantee ± the tool-face certainty of measurement of 0.1 °.
When having guaranteed tool-face certainty of measurement, in order to guarantee the transfer rate of tool-face, control module 4 of the present utility model adopts following coded system when tool-face data are encoded:
1) tool-face data upload is incorporated in a data sequence.
2) before data sequence, add a tool-face status data, this tool-face status data comprises type code position and the tool-face interval flag bit of living in of tool-face.
Wherein, 1 bit of tool-face type code bit stealing, is used for specification tool Noodles type: gravity tool-face or Magnetic tools face.
Tool-face interval flag bit of living in take i (i=1,2,3 ...) individual bit, be used between code area, specification tool face place.Between code area by being that 2i fixing interval obtains by 360 ° of tool-face by angle bisecting.In the present embodiment, 360 ° of tool-face are divided between 8 code areas (as shown in Figure 2), 000 is 0-45 ° between the first code area, and 001 is 45-90 ° between the second code area, by that analogy.
3) after tool-face status data, several tool-face coded datas of encoding.
Wherein, each tool-face coded data of data sequence is all encoded according to following formula:
N＝(α-β)*2
n/θ，
In formula, α is tool-face data; β is a reference value between code area, and between code area, a reference value is the minimum tool face amount between code area, and for example between the first code area, 000 a reference value is 0 °; N is tool-face data bits; θ is the angle comprising between code area.
Due to after dividing between code area, the coding range of tool-face between code area diminishes, so precision can improve.In the present embodiment, 360 ° of tool-face are divided between 8 code areas, tool-face between the code area of 45 ° in coding, data sequence comprises 1 tool-face status data and 3 tool-face coded datas (as shown in Figure 3), therefore tool-face data bits is 9, can guarantee ± encoding precision of 0.1 °.For example the coding of 25.2 ° of tool-face is calculated as follows:
(25.2-0)*2
9/45＝287，
The coding that is 25.2 ° of tool-face is exactly 287.
The utility model is after adopting above-mentioned coded system, and measurement while drilling exploring tube 100 can guarantee the high-acruracy survey of implementation tool face under the substantially constant condition of the transfer rate of tool-face.
The various embodiments described above are only for illustrating the utility model; wherein the structure of each parts, connected mode etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (5)
1. a measurement while drilling exploring tube, is characterized in that, this measurement while drilling exploring tube comprises inserting tube joint, inserting tube protection cylinder, power module, control module and measurement pipe nipple;
Described inserting tube joint is arranged at one end of described inserting tube protection cylinder, and described inserting tube joint receives external power source and supplies with;
Described power module, control module and measurement pipe nipple are all fixed on described inserting tube and protect cylinder inner, and described power module is used for external power source realize level conversion and power to described control module and measurement pipe nipple;
In described measurement pipe nipple, dispose three axis fluxgates that add table and measure earth's magnetic field for measuring three axles of earth gravitational field;
Described control module is connected with described measurement pipe nipple, be used for gathering the data that described measurement pipe nipple measures the tool-face data that calculate described measurement pipe nipple, then described tool-face data encoded and to outside, send out the control level signal with coded data by described inserting tube joint.
2. measurement while drilling exploring tube as claimed in claim 1, is characterized in that, described power module can receive direct current supply and three-phase alternating-current powered.
3. measurement while drilling exploring tube as claimed in claim 1 or 2, is characterized in that, it is three mutually perpendicular acceleration transducers of sensitive direction that described three axles add table, and its certainty of measurement is 1 ‰ G, and wherein G is 9.8m/s
2.
4. measurement while drilling exploring tube as claimed in claim 2, is characterized in that, it is three mutually perpendicular acceleration transducers of sensitive direction that described three axles add table, and its certainty of measurement is 1 ‰ G, and wherein G is 9.8m/s
2.
5. the measurement while drilling exploring tube as described in claim 1 or 2 or 4, is characterized in that, it is the high-precision fluxgate of 0.1 μ T that described three axis fluxgates adopt certainty of measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320391759.8U CN203476312U (en) | 2013-07-03 | 2013-07-03 | Measurement while drilling probe pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320391759.8U CN203476312U (en) | 2013-07-03 | 2013-07-03 | Measurement while drilling probe pipe |
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| CN203476312U true CN203476312U (en) | 2014-03-12 |
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| CN201320391759.8U Expired - Fee Related CN203476312U (en) | 2013-07-03 | 2013-07-03 | Measurement while drilling probe pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291282A (en) * | 2012-03-01 | 2013-09-11 | 江阴中科矿业安全科技有限公司 | Measurement while drilling system for drill carriage |
| CN111913225A (en) * | 2020-08-14 | 2020-11-10 | 中国地质科学院地球物理地球化学勘查研究所 | Design method for deep well three-component magnetic measurement system |
-
2013
- 2013-07-03 CN CN201320391759.8U patent/CN203476312U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291282A (en) * | 2012-03-01 | 2013-09-11 | 江阴中科矿业安全科技有限公司 | Measurement while drilling system for drill carriage |
| CN111913225A (en) * | 2020-08-14 | 2020-11-10 | 中国地质科学院地球物理地球化学勘查研究所 | Design method for deep well three-component magnetic measurement system |
| CN111913225B (en) * | 2020-08-14 | 2023-12-08 | 中国地质科学院地球物理地球化学勘查研究所 | Design method for deep well three-component magnetic measurement system |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Goaltech Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: Goaltech Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20210703 |
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| CF01 | Termination of patent right due to non-payment of annual fee |