CN103388472A - Near-bit bit pressure measuring sensor - Google Patents
Near-bit bit pressure measuring sensor Download PDFInfo
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- CN103388472A CN103388472A CN2013103282486A CN201310328248A CN103388472A CN 103388472 A CN103388472 A CN 103388472A CN 2013103282486 A CN2013103282486 A CN 2013103282486A CN 201310328248 A CN201310328248 A CN 201310328248A CN 103388472 A CN103388472 A CN 103388472A
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Abstract
The invention relates to the technical field of a bit pressure measuring device on a near-bit part in petroleum drilling, in particular to a near-bit bit pressure measuring sensor. The near-bit bit pressure measuring sensor comprises a bearing body, high-temperature strain gages and high-temperature wires, wherein the bearing body is cylindrical; the high-temperature strain gages are four equivalent strain resistors and distributed and fixed on the end face of the bearing body in a rectangular way; the two ends of each high-temperature strain gage are fixedly connected with the high-temperature wires respectively in a corresponding way; all the high-temperature strain gages are electrically connected together through the corresponding high-temperature wires according to a bridge connection mode. The near-bit bit pressure measuring sensor has a rational and compact structure, is convenient to use and can deform along with stress on a drill collar, the resistance value of each high-temperature strain gage linearly changes when the bearing body deforms under stress, so that a voltage signal output by the high-temperature wires linearly changes, the variation interval of the signal is read, and data fitting is performed, so that the current bit pressure value can be measured; the near-bit bit pressure measuring sensor has the advantages of uniform stress, higher linearity of strain resistance value variation and capability of adapting to underground high-temperature environments.
Description
Technical field
The present invention relates to the pressure of the drill measurement mechanism technical field at nearly drill bit place in oil drilling, is a kind of nearly drill bit the pressure of the drill measuring transducer.
Background technology
In drilling process, the pressure of the drill parameter is to rely on drilling tool gross weight in well to draw with the large suspending weight difference rough calculation that hooks at present, and error is very large, and brings thus the relevant issues such as erroneous judgement to underground working.Therefore the pressure of the drill actual value of measuring nearly drill bit place has very important realistic meaning to drilling engineering.But the sensor that domestic at present temporary needleless is measured nearly drill bit the pressure of the drill, therefore be badly in need of a kind of sensor that can meet nearly drill bit the pressure of the drill of measurement of underground working of development.
Summary of the invention
The invention provides a kind of nearly drill bit the pressure of the drill measuring transducer, overcome the deficiency of above-mentioned prior art, it can effectively solve existing the pressure of the drill parameter and rely on drilling tool gross weight and the large problem that hooks suspending weight difference rough calculation, has larger error in well.
Technical scheme of the present invention realizes by following measures: a kind of nearly drill bit the pressure of the drill measuring transducer, comprise pressure-bearing body, high temperature strain foil and high temperature wire, the pressure-bearing body is cylindric, high temperature strain foil is that strain resistor and the rectangular distribution of four equivalences is fixed on the end face of pressure-bearing body, the two ends of corresponding each high temperature strain foil are fixedly connected with respectively high temperature wire, and each high temperature strain foil is electrically connected according to the bridge-type connected mode by corresponding high temperature wire.
Below the further optimization and/or improvements to the foregoing invention technical scheme:
Above-mentioned high temperature strain foil can be fitted on the end face of pressure-bearing body by the mode of sputter.
Above-mentioned high temperature wire can link together by high temperature scolding tin and high temperature strain foil.
It is the silver-colored wire of 0.25 millimeter that above-mentioned high temperature wire can be diameter dimension.
Above-mentioned pressure-bearing body can be the solid cylindrical steel ingot.
The gauge of above-mentioned pressure-bearing body can be 15 millimeters, and the diameter dimension of pressure-bearing body can be 32 millimeters.
Reasonable and compact in structure of the present invention, easy to use, it can produce deformation with drill collar is stressed, when pressure-bearing body stress deformation, linear change can occur in the resistance of high temperature strain foil, causes the voltage signal of high temperature wire output can produce linear change, reads the constant interval of this signal and does data fitting, can record current the pressure of the drill value, have advantages of stressed evenly, the strain change in resistance linearity is higher, can adapt to the down-hole hot environment.
Description of drawings
Accompanying drawing 1 is the main TV structure schematic diagram of most preferred embodiment of the present invention.
Accompanying drawing 2 is the perspective view of pressure-bearing body in accompanying drawing 1.
Coding in accompanying drawing is respectively: 1 is the pressure-bearing body, and 2 is high temperature strain foil, and 3 is high temperature wire, and H is the gauge of pressure-bearing body, and D is the diameter dimension of pressure-bearing body.
The specific embodiment
The present invention is not subjected to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
In the present invention, for convenience of description, the description of the relative position relation of each parts is all to be described according to the Butut mode of Figure of description 1, as: the position relationship of forward and backward, upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
The invention will be further described below in conjunction with embodiment and accompanying drawing:
As shown in accompanying drawing 1,2, this nearly drill bit the pressure of the drill measuring transducer comprises pressure-bearing body 1, high temperature strain foil 2 and high temperature wire 3, pressure-bearing body 1 is cylindric, high temperature strain foil 2 is that strain resistor and the rectangular distribution of four equivalences is fixed on the end face of pressure-bearing body 1, the two ends of corresponding each high temperature strain foil 2 are fixedly connected with respectively high temperature wire 3, and each high temperature strain foil 2 is electrically connected according to the bridge-type connected mode by corresponding high temperature wire 3.adopt the liquid nitrogen cold fitting mode to be fixed on drilling tool the present invention, make it complete with drill collar, carry out the gapless laminating, thereby can produce deformation with drill collar is stressed, thereby drilling tool is subjected to deadweight can produce axial deformation extruding pressure-bearing body 1 in down-hole, pressure-bearing body 1 radial direction is the pressure-bearing direction, with high temperature wire 3 as standard driving voltage input and compliance voltage output, when pressure-bearing body 1 stress deformation, linear change can occur in the resistance of high temperature strain foil 2, cause the voltage signal of high temperature wire 3 outputs can produce linear change, read the constant interval of this signal and do data fitting, can record current the pressure of the drill value, therefore the present invention has stressed even, the strain change in resistance linearity is higher, the advantage that can adapt to the down-hole hot environment.
Can according to actual needs, above-mentioned nearly drill bit the pressure of the drill measuring transducer be made further optimization and/or improvements:
As shown in Figure 1, high temperature strain foil 2 is fitted on the end face of pressure-bearing body 1 by the mode of sputter.High temperature strain foil 2 is fitted fixing by the sputter mode, its change in resistance linearity can be higher after pressure-bearing body 1 produces deformation, and measurement result is more accurate.
As shown in Figure 1, high temperature wire 3 links together by high temperature scolding tin and high temperature strain foil 2.High temperature scolding tin has resistant to elevated temperatures characteristic, can adapt to the hot environment of down-hole.
As shown in Figure 1, high temperature wire 3 is the silver-colored wire of 0.25 millimeter for diameter dimension.High temperature wire 3 adopts silver-colored wire, and its resistance is lower, and measurement result is more accurate.
As shown in accompanying drawing 1,2, pressure-bearing body 1 is the solid cylindrical steel ingot.Pressure-bearing body 1 is the solid cylindrical steel ingot, and its intensity is higher, and application life is longer.
As shown in Figure 2, the gauge H of pressure-bearing body 1 is 15 millimeters, and the diameter dimension D of pressure-bearing body 1 is 32 millimeters.
Above technical characterictic has formed most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
Claims (10)
1. nearly drill bit the pressure of the drill measuring transducer, it is characterized in that comprising pressure-bearing body, high temperature strain foil and high temperature wire, the pressure-bearing body is cylindric, high temperature strain foil is that strain resistor and the rectangular distribution of four equivalences is fixed on the end face of pressure-bearing body, the two ends of corresponding each high temperature strain foil are fixedly connected with respectively high temperature wire, and each high temperature strain foil is electrically connected according to the bridge-type connected mode by corresponding high temperature wire.
2. nearly drill bit the pressure of the drill measuring transducer according to claim 1, is characterized in that high temperature strain foil is fitted on the end face of pressure-bearing body by the mode of sputter.
3. nearly drill bit the pressure of the drill measuring transducer according to claim 1 and 2, is characterized in that high temperature wire links together by high temperature scolding tin and high temperature strain foil.
4. nearly drill bit the pressure of the drill measuring transducer according to claim 1 and 2, is characterized in that high temperature wire is that diameter dimension is the silver-colored wire of 0.25 millimeter.
5. nearly drill bit the pressure of the drill measuring transducer according to claim 3, is characterized in that high temperature wire is that diameter dimension is the silver-colored wire of 0.25 millimeter.
6. nearly drill bit the pressure of the drill measuring transducer according to claim 1 and 2, is characterized in that the pressure-bearing body is the solid cylindrical steel ingot.
7. nearly drill bit the pressure of the drill measuring transducer according to claim 3, is characterized in that the pressure-bearing body is the solid cylindrical steel ingot.
8. according to claim 4 or 5 nearly drill bit the pressure of the drill measuring transducers of stating, is characterized in that the pressure-bearing body is the solid cylindrical steel ingot.
9. nearly drill bit the pressure of the drill measuring transducer according to claim 1 and 2, the gauge that it is characterized in that the pressure-bearing body is 15 millimeters, the diameter dimension of pressure-bearing body is 32 millimeters.
10. according to claim 3 or 4 or 5 or 6 or 7 or 8 described nearly drill bit the pressure of the drill measuring transducers, the gauge that it is characterized in that the pressure-bearing body is 15 millimeters, the diameter dimension of pressure-bearing body is 32 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103282486A CN103388472A (en) | 2013-07-31 | 2013-07-31 | Near-bit bit pressure measuring sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103282486A CN103388472A (en) | 2013-07-31 | 2013-07-31 | Near-bit bit pressure measuring sensor |
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| CN103388472A true CN103388472A (en) | 2013-11-13 |
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| CN2013103282486A Pending CN103388472A (en) | 2013-07-31 | 2013-07-31 | Near-bit bit pressure measuring sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014400A (en) * | 2016-06-16 | 2016-10-12 | 辽宁工程技术大学 | Coal and rock mass physical-property monitoring device and method |
| CN112857638A (en) * | 2020-12-25 | 2021-05-28 | 湖南应用技术学院 | Drilling internal stress measurement equipment and measurement method thereof |
| CN113447171A (en) * | 2021-06-02 | 2021-09-28 | 中国科学院地质与地球物理研究所 | Pressure gauge chip and manufacturing process thereof |
| CN113465794A (en) * | 2021-06-02 | 2021-10-01 | 中国科学院地质与地球物理研究所 | Double-cavity pressure gauge chip and manufacturing process thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4608861A (en) * | 1984-11-07 | 1986-09-02 | Macleod Laboratories, Inc. | MWD tool for measuring weight and torque on bit |
| US4958517A (en) * | 1989-08-07 | 1990-09-25 | Teleco Oilfield Services Inc. | Apparatus for measuring weight, torque and side force on a drill bit |
| US5386724A (en) * | 1993-08-31 | 1995-02-07 | Schlumberger Technology Corporation | Load cells for sensing weight and torque on a drill bit while drilling a well bore |
| EP1380823A2 (en) * | 2002-07-12 | 2004-01-14 | Services Petroliers Schlumberger | Drilling mechanics load cell sensor |
| CN101424182A (en) * | 2008-12-12 | 2009-05-06 | 清华大学 | Dynamic force multi-parameter measuring systems for rotary simulation of bottom drill string |
| CN203412573U (en) * | 2013-07-31 | 2014-01-29 | 中国石油集团西部钻探工程有限公司 | Near-bit drilling pressure measuring sensor |
-
2013
- 2013-07-31 CN CN2013103282486A patent/CN103388472A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4608861A (en) * | 1984-11-07 | 1986-09-02 | Macleod Laboratories, Inc. | MWD tool for measuring weight and torque on bit |
| US4958517A (en) * | 1989-08-07 | 1990-09-25 | Teleco Oilfield Services Inc. | Apparatus for measuring weight, torque and side force on a drill bit |
| US5386724A (en) * | 1993-08-31 | 1995-02-07 | Schlumberger Technology Corporation | Load cells for sensing weight and torque on a drill bit while drilling a well bore |
| EP1380823A2 (en) * | 2002-07-12 | 2004-01-14 | Services Petroliers Schlumberger | Drilling mechanics load cell sensor |
| CN101424182A (en) * | 2008-12-12 | 2009-05-06 | 清华大学 | Dynamic force multi-parameter measuring systems for rotary simulation of bottom drill string |
| CN203412573U (en) * | 2013-07-31 | 2014-01-29 | 中国石油集团西部钻探工程有限公司 | Near-bit drilling pressure measuring sensor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014400A (en) * | 2016-06-16 | 2016-10-12 | 辽宁工程技术大学 | Coal and rock mass physical-property monitoring device and method |
| CN112857638A (en) * | 2020-12-25 | 2021-05-28 | 湖南应用技术学院 | Drilling internal stress measurement equipment and measurement method thereof |
| CN112857638B (en) * | 2020-12-25 | 2022-05-17 | 湖南应用技术学院 | A kind of drilling internal stress measuring equipment and its measuring method |
| CN113447171A (en) * | 2021-06-02 | 2021-09-28 | 中国科学院地质与地球物理研究所 | Pressure gauge chip and manufacturing process thereof |
| CN113465794A (en) * | 2021-06-02 | 2021-10-01 | 中国科学院地质与地球物理研究所 | Double-cavity pressure gauge chip and manufacturing process thereof |
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Application publication date: 20131113 |