CN107387059B - Underground engineering parameter measuring instrument - Google Patents
Underground engineering parameter measuring instrument Download PDFInfo
- Publication number
- CN107387059B CN107387059B CN201710555887.4A CN201710555887A CN107387059B CN 107387059 B CN107387059 B CN 107387059B CN 201710555887 A CN201710555887 A CN 201710555887A CN 107387059 B CN107387059 B CN 107387059B
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- groove
- strain gauge
- cover plate
- pressure sensor
- engineering parameter
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- 238000005259 measurement Methods 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 12
- 239000011148 porous material Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000003670 easy-to-clean Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/26—Storing data down-hole, e.g. in a memory or on a record carrier
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses an underground engineering parameter measuring instrument which comprises a non-magnetic shell, a battery, a circuit board, a sensor assembly and a strain gauge set, wherein a first groove, a second groove, a third groove and a plurality of fourth grooves which are arranged in pairs are arranged on the non-magnetic shell along the circumferential direction, and the axes of each pair of the fourth grooves are symmetrical to each other; the battery is accommodated in a cavity formed by connecting the first groove with the first cover plate; the circuit board is accommodated in a cavity formed by connecting the second groove with the second cover plate; the sensor component is accommodated in a cavity formed by connecting the third groove with the third cover plate; the strain gauge group is accommodated in a cavity formed by connecting the fourth groove with the fourth cover plate; the battery, the strain gauge set and the sensor assembly are all connected with the circuit board. The invention realizes the dynamic measurement of the engineering parameters of the underground instrument, has the advantages of reliable data, high accuracy, simple structure, convenient installation and disassembly and easy later maintenance.
Description
Technical Field
The invention relates to the technical field of measurement while drilling of well deviation, in particular to an underground engineering parameter measuring instrument.
Background
In order to improve the scientificity and safety of drilling operation and master the stress state and the motion rule of a drilling pipe tool, ground engineering technicians need to better know underground engineering parameters such as drilling pressure, torque, bending stress, pressure in a drill string, annular pressure, vibration and the like.
At present, in the construction process of well drilling at home and abroad, methods for acquiring underground engineering parameters such as weight on bit, torque, bending stress, pressure in a drill string, annular pressure and the like mainly comprise two types of indirect acquisition on the ground (or near a wellhead) and direct acquisition under the well, wherein the indirect acquisition method is most commonly used due to low cost. The measurement and the understanding of the weight on bit mainly use a ground weight indicator, but the data of the ground measurement cannot truly reflect the weight on bit; the torque is measured on a wellhead device or a motor shaft, and is not the action torque of a drill bit; the ground is not known about engineering parameters such as annular pressure, bending stress and the like. With the development of modern electronic measurement technology, various sensors and data processing devices have been able to acquire data from the harsh environment downhole and process it.
Therefore, it is desirable to provide a device for measuring downhole tool engineering parameters that enables measurements of weight on bit, torque, bending stress, pressure in the drill string, and annulus pressure.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an underground engineering parameter measuring instrument which comprises a non-magnetic shell, a battery, a circuit board, a sensor component and a strain gauge group,
the non-magnetic shell is circumferentially provided with a first groove, a second groove, a third groove and a plurality of fourth grooves which are arranged in pairs, wherein the first groove, the second groove and the third groove are all close to one end of the non-magnetic shell, the fourth grooves are all close to the other end of the non-magnetic shell, and each pair of the fourth grooves are symmetrical to each other along the axis of the non-magnetic shell;
the battery is accommodated in a cavity formed by connecting the first groove with the first cover plate;
the circuit board is accommodated in a cavity formed by connecting the second groove with the second cover plate;
the sensor component is accommodated in a cavity formed by connecting the third groove with the third cover plate;
the strain gauge group is accommodated in a cavity formed by connecting the fourth groove with the fourth cover plate;
the battery, the strain gauge set, and the sensor assembly are all connected with the circuit board.
Further, the sensor assembly includes a first pressure sensor for measuring the drift diameter mud pressure and a second pressure sensor for measuring the annulus mud pressure;
the first pressure sensor is arranged radially inwards of the nonmagnetic shell, and the second pressure sensor is arranged radially outwards of the nonmagnetic shell.
Further, the sensor assembly further comprises a fixing plate, the fixing plate is accommodated in the third groove, and the first pressure sensor and the second pressure sensor are clamped between the fixing plate and the third cover plate.
Further, the sensor assembly further comprises a wear-resistant sleeve, one end of the wear-resistant sleeve penetrates through the inner wall of the nonmagnetic shell, and the other end of the wear-resistant sleeve corresponds to the second pressure sensor.
Further, the strain gauge group comprises a first strain gauge, the first strain gauge is arranged at one end of the fourth groove, and a pair of first strain gauges which are 180-degree symmetrical form a bridge for measuring bit pressure;
the first strain gauge comprises a first strain gauge and a second strain gauge, the included angle between the first strain gauge and the horizontal plane is 0 degrees, the included angle between the second strain gauge and the horizontal plane is 90 degrees, and the first strain gauge and the second strain gauge are arranged side by side along the width direction of the fourth groove.
Further, the strain gauge group comprises a second strain gauge, the second strain gauge is arranged at the other end of the fourth groove, and a pair of second strain gauges which are 180 DEG symmetrical form a bridge for measuring torque;
the second strain gauge comprises a third strain gauge and a fourth strain gauge, wherein an included angle between the third strain gauge and a horizontal plane is 45 degrees, an included angle between the fourth strain gauge and the horizontal plane is 135 degrees, and the third strain gauge and the fourth strain gauge are arranged side by side along the width direction of the fourth groove.
Further, the first groove, the second groove, the third groove and the fourth groove are all axially parallel to the nonmagnetic shell.
Further, the first groove, the second groove and the third groove are uniformly distributed along the circumferential direction of the nonmagnetic shell.
Further, the fourth grooves are uniformly distributed along the circumferential direction of the nonmagnetic shell.
Further, the number of the fourth grooves is two.
Further, the three-dimensional accelerometer is arranged in the second groove and is electrically connected with the circuit board.
The implementation of the invention has the following beneficial effects:
1. the strain gauge group is arranged in the fourth groove of the nonmagnetic shell, so that the weight on bit and torque load used for normal drilling can be transmitted, the weight on bit and torque can be measured while drilling by utilizing the bridge formed by the strain gauges, the data is reliable, and the accuracy is high;
2. the invention is provided with a first pressure sensor for measuring the drift diameter mud pressure and a second pressure sensor for measuring the annular mud pressure, wherein the first pressure sensor and the second pressure sensor are electrically connected with a circuit board, and the circuit board records, stores or transmits the measured mud pressure value to an uploading device.
4. In the invention, the first pressure sensor and the second pressure sensor are clamped between the fixed plate and the third cover plate, the third cover plate and the third groove are provided with the pore canal for mud to pass through, and the pore canal corresponds to the first pressure sensor and the second pressure sensor respectively, and the later stage is easy to clean.
5. The invention is also provided with the wear-resistant sleeve, the wear-resistant sleeve penetrates through the third cover plate, the position of the wear-resistant sleeve corresponds to the second pressure sensor, the effects of damping and reducing abrasion can be achieved, and the wear-resistant sleeve is convenient to replace in the later period.
6. The circuit board can record and store data and upload data.
7. The invention realizes the dynamic measurement of the engineering parameters of the underground instrument, has simple structure and convenient assembly and disassembly, and reduces the later maintenance difficulty.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of an instrument for measuring parameters of downhole engineering according to the present invention;
FIG. 2 is a schematic perspective view of an instrument for measuring parameters of downhole engineering according to the present invention;
FIG. 3 is a schematic front view of a downhole engineering parameter measurement instrument provided by the present invention;
FIG. 4 is a schematic rear view of a downhole engineering parameter measurement instrument provided by the present invention;
FIG. 5 is a schematic view of the structure of the strain gauge set provided by the present invention;
FIG. 6 is a schematic cross-sectional view along the U-U plane of the downhole engineering parameter measurement instrument provided by the present invention;
fig. 7 is an enlarged schematic view of a sensor assembly provided by the present invention.
The device comprises a 1-nonmagnetic shell, a 2-battery, a 3-circuit board, a 4-sensor assembly, a 5-first strain flower, a 6-second strain flower, a 7-three-dimensional accelerometer and an 8-sealing ring, wherein the first strain flower is a magnetic field;
11-first groove, 12-second groove, 13-third groove, 14-fourth groove, 15-first cover plate, 16-second cover plate, 17-third cover plate, 18-fourth cover plate;
41-a first pressure sensor, 42-a second pressure sensor, 43-a fixed plate, 44-a wear sleeve, 45-a support back plate.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally formed, for example; can be mechanically or electrically connected; the connection may be direct, indirect, or may be internal to the two elements or an interaction relationship between the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
Fig. 1 is a perspective view of an underground engineering parameter measuring instrument provided by the present invention, fig. 2 is a perspective view of the underground engineering parameter measuring instrument provided by the present invention, fig. 3 is a front view of the underground engineering parameter measuring instrument provided by the present invention, wherein, the viewing angles of fig. 1 and fig. 2 are different, as shown in fig. 1, fig. 2 and fig. 3, an underground engineering parameter measuring instrument comprises a non-magnetic housing 1, a battery 2, a circuit board 3, a sensor assembly 4 and a strain gauge set,
a first groove 11, a second groove 12, a third groove 13 and a plurality of fourth grooves 14 which are arranged in pairs are arranged on the nonmagnetic shell 1 along the circumferential direction, the first groove 11, the second groove 12 and the third groove 13 are all arranged close to one end of the nonmagnetic shell 1, the plurality of fourth grooves 14 are all arranged close to the other end of the nonmagnetic shell 1, and each pair of fourth grooves 14 are symmetrical to each other relative to the axis of the nonmagnetic shell 1;
the battery 2 is accommodated in a cavity formed by connecting the first groove 11 with the first cover plate 15; optionally, the battery 2 is a rechargeable battery 2; preferably, a sealing ring 8 is also arranged between the first groove 11 and the first cover plate 15; the shape of the first groove 11 is adapted to the battery 2.
The circuit board 3 is accommodated in a cavity formed by connecting the second groove 12 with the second cover plate 16; preferably, a sealing ring 8 is also arranged between the second groove 12 and the second cover plate 16.
The sensor assembly 4 is accommodated in a cavity formed by connecting the third groove 13 with the third cover plate 17; preferably, a sealing ring 8 is further disposed between the third groove 13 and the third cover 17.
Fig. 4 is a schematic rear view of the downhole engineering parameter measuring apparatus provided by the present invention, as shown in fig. 4, a third cover plate 17 connected with the third groove 13 is near one end of the measuring apparatus, and a fourth cover plate 18 connected with the fourth groove 14 is near the other end of the measuring apparatus.
Fig. 5 is a schematic structural view of the strain gauge set provided in the present invention, as shown in fig. 5, the strain gauge set is accommodated in a cavity formed by connecting the fourth groove 14 and the fourth cover plate 18; the strain gauge group comprises a first strain gauge 5, the first strain gauge 5 is arranged at one end of the fourth groove 14, and a pair of first strain gauges 5 which are 180-degree symmetrical form a bridge for measuring bit pressure;
the first strain gauge 5 comprises a first strain gauge and a second strain gauge, an included angle between the first strain gauge and a horizontal plane is 0 degrees, an included angle between the second strain gauge and the horizontal plane is 90 degrees, and the first strain gauge and the second strain gauge are arranged side by side along the width direction of the fourth groove 14.
The battery 2, the strain gauge set and the sensor assembly 4 are all connected to the circuit board 3.
FIG. 6 is a schematic cross-sectional view along the U-U plane of the downhole engineering parameter measurement apparatus provided by the present invention, as shown in FIG. 6, the sensor assembly 4 includes a first pressure sensor 41 for measuring the drift diameter mud pressure and a second pressure sensor 42 for measuring the annulus mud pressure; the first pressure sensor 41 is disposed radially inward of the nonmagnetic case 1, and the second pressure sensor 42 is disposed radially outward of the nonmagnetic case 1.
Specifically, the sensor assembly 4 further includes a fixing plate 43, the fixing plate 43 is accommodated in the third groove 13, and the first pressure sensor 41 and the second pressure sensor 42 are both clamped between the fixing plate 43 and the third cover plate 17.
In detail, the first groove 11, the second groove 12, the third groove 13, and the fourth groove 14 are all axially parallel to the nonmagnetic case 1. Preferably, elastic limiting pieces are arranged in the first groove 11, the second groove 12, the third groove 13 and the fourth groove 14, and line connection among the battery 2, the circuit board 3, the sensor assembly 4, the strain gauge group and the like can be prevented from loosening due to impact vibration by arranging the limiting pieces, so that the battery cannot work normally.
Optionally, the first groove 11, the second groove 12 and the third groove 13 are uniformly distributed along the circumferential direction of the nonmagnetic casing 1.
Specifically, the number of the fourth grooves 14 is two, and the included angle between the two fourth grooves 14 is 180 °.
Fig. 2 is a schematic perspective view of the downhole engineering parameter measuring apparatus provided by the present invention, and fig. 4 is a schematic rear view of the downhole engineering parameter measuring apparatus provided by the present invention, as shown in fig. 2 and fig. 4, where the third groove 13 coincides with the longitudinal center line of the fourth groove 14.
Preferably, the downhole engineering parameter measuring apparatus provided by this embodiment further includes a three-dimensional accelerometer 7, fig. 1 is a schematic perspective view of the downhole engineering parameter measuring apparatus provided by this embodiment, as shown in fig. 1, the three-dimensional accelerometer 7 is disposed in the second groove 12, two areas are separated in the second groove 12, the circuit board 3 is disposed at one end of the second groove 12, the three-dimensional accelerometer 7 is disposed at the other end of the second groove 12, and the three-dimensional accelerometer 7 is electrically connected with the circuit board 3.
In one embodiment, the nonmagnetic casing 1 has a length of 1117.60mm and a diameter of 172.00mm. It should be noted that the length and diameter of the nonmagnetic shell 1 are not limited to the above-mentioned fixed values, and may be values similar to the length and diameter.
The implementation of the invention has the following beneficial effects:
1. the strain gauge group is arranged in the fourth groove of the nonmagnetic shell, so that the weight-on-bit load used for normal drilling can be transmitted, the strain gauge is used for forming a bridge to measure the weight-on-bit while drilling, and the data is reliable and high in accuracy.
2. The invention is provided with a first pressure sensor for measuring the drift diameter mud pressure and a second pressure sensor for measuring the annular mud pressure, wherein the first pressure sensor and the second pressure sensor are electrically connected with a circuit board, and the circuit board records, stores or transmits the measured mud pressure value to an uploading device.
4. In the invention, the first pressure sensor and the second pressure sensor are clamped between the fixed plate and the third cover plate, the third cover plate and the third groove are provided with the pore canal for mud to pass through, and the pore canal corresponds to the first pressure sensor and the second pressure sensor respectively, and the later stage is easy to clean.
5. The circuit board can record and store data and upload data.
6. The invention has simple structure, convenient installation and disassembly and reduced later maintenance difficulty.
Example 2
Fig. 1 is a perspective view of an underground engineering parameter measuring instrument provided by the invention, fig. 2 is a perspective view of the underground engineering parameter measuring instrument provided by the invention, fig. 3 is a front view of the underground engineering parameter measuring instrument provided by the invention, wherein, the viewing angles of fig. 1 and 2 are different, as shown in fig. 1, 2 and 3, the embodiment provides an underground engineering parameter measuring instrument which comprises a non-magnetic shell 1, a battery 2, a circuit board 3, a sensor component 4 and a strain gauge group,
a first groove 11, a second groove 12, a third groove 13 and a plurality of fourth grooves 14 which are arranged in pairs are arranged on the nonmagnetic shell 1 along the circumferential direction, the first groove 11, the second groove 12 and the third groove 13 are all arranged close to one end of the nonmagnetic shell 1, the plurality of fourth grooves 14 are all arranged close to the other end of the nonmagnetic shell 1, and each pair of fourth grooves 14 are symmetrical to each other relative to the axis of the nonmagnetic shell 1;
the battery 2 is accommodated in a cavity formed by connecting the first groove 11 with the first cover plate 15, and the first groove 11 is detachably connected with the first cover plate 15;
the circuit board 3 is accommodated in a cavity formed by connecting the second groove 12 with the second cover plate 16, and the second groove 12 is detachably connected with the second cover plate 16;
the sensor assembly 4 is accommodated in a cavity formed by connecting the third groove 13 with the third cover plate 17, and the third groove 13 is detachably connected with the third cover plate 17;
the strain gauge set is accommodated in a cavity formed by connecting the fourth groove 14 with the fourth cover plate 18, and the fourth groove 14 is detachably connected with the fourth cover plate 18;
fig. 5 is a schematic structural view of a strain gauge set provided in the present invention, as shown in fig. 5, where the strain gauge set includes a first strain gauge 5, the first strain gauge 5 is disposed at one end of the fourth groove 14, and a pair of first strain gauge 5 symmetrical at 180 ° with each other form a bridge for measuring weight on bit;
the first strain gauge 5 comprises a first strain gauge and a second strain gauge, an included angle between the first strain gauge and a horizontal plane is 0 degrees, an included angle between the second strain gauge and the horizontal plane is 90 degrees, and the first strain gauge and the second strain gauge are arranged side by side along the width direction of the fourth groove 14.
Specifically, the strain gauge set includes a second strain gauge 6, the second strain gauge 6 is disposed at the other end of the fourth groove 14, and a pair of second strain gauges 6 symmetrical at 180 ° with each other form a bridge for measuring torque;
the second strain gauge 6 comprises a third strain gauge and a fourth strain gauge, an included angle between the third strain gauge and a horizontal plane is 45 degrees, an included angle between the fourth strain gauge and the horizontal plane is 135 degrees, and the third strain gauge and the fourth strain gauge are arranged side by side along the width direction of the fourth groove 14.
The battery 2, the strain gauge set and the sensor assembly 4 are all connected to the circuit board 3.
In detail, the nonmagnetic shell 1 is provided with a plurality of wire passing grooves, the shape of each wire passing groove is strip-shaped, and the wires pass through the wire passing grooves.
Specifically, the sensor assembly 4 comprises a first pressure sensor 41 for measuring the drift diameter mud pressure and a second pressure sensor 42 for measuring the annulus mud pressure; the first pressure sensor 41 is disposed radially inward of the nonmagnetic case 1, and the second pressure sensor 42 is disposed radially outward of the nonmagnetic case 1.
Fig. 7 is an enlarged schematic view of the sensor assembly 4 provided by the present invention, as shown in fig. 7, the sensor assembly 4 further includes a fixing plate 43, the fixing plate 43 is accommodated in the third groove 13, and the first pressure sensor 41 and the second pressure sensor 42 are both clamped between the fixing plate 43 and the third cover plate 17. The third cover plate 17 is provided with a first concave part matched with the first pressure sensor 41, and the fixed plate 43 is provided with a second concave part matched with the second pressure sensor 42; a first support back plate 45 is arranged between the third cover plate 17 and the first pressure sensor 41, and a second support back plate 45 is arranged between the fixed plate 43 and the second pressure sensor 42; the first support back plate 45 is disposed in the first recess, and the second support back plate 45 is disposed in the second recess.
Preferably, the sensor assembly 4 further includes a wear-resistant sleeve 44, one end of the wear-resistant sleeve 44 penetrates through the inner wall of the nonmagnetic shell 1, and the other end of the wear-resistant sleeve 44 corresponds to the second pressure sensor 42.
Preferably, the wear sleeve 44 is radially disposed; preferably, the wear-resistant sleeve 44 is detachably connected with the third cover plate 17, the wear-resistant sleeve 44 is a hollow conical boss-shaped structure, and the hollow part of the wear-resistant sleeve 44 is a hole channel communicated with the second pressure sensor 42. To enhance the wear resistance of the wear sleeve 44, the surface of the bore of the wear sleeve 44 is chrome plated. Preferably, the wear-resistant sleeve 44 may be divided into multiple specifications according to the shape and size of the duct, and in actual use, the wear-resistant sleeve 44 with different specifications may be replaced conveniently according to the measurement requirement.
Specifically, the first groove 11, the second groove 12, the third groove 13 and the fourth groove 14 are all axially parallel to the nonmagnetic casing 1, and the first groove 11, the second groove 12 and the third groove 13 are uniformly distributed along the circumferential direction of the nonmagnetic casing 1.
Specifically, the number of the fourth grooves 14 is four, and the four fourth grooves 14 are uniformly distributed along the axial direction of the nonmagnetic casing 1.
Specifically, the three-dimensional accelerometer 7 is further included, the three-dimensional accelerometer 7 is disposed in the second groove 12, and the three-dimensional accelerometer 7 is electrically connected with the circuit board 3.
The implementation of the embodiment has the following beneficial effects:
1. the strain gauge group is arranged in the fourth groove of the nonmagnetic shell, so that the weight on bit and torque load used for normal drilling can be transmitted, the weight on bit and torque can be measured while drilling by utilizing the bridge formed by the strain gauges, and the data is reliable and high in accuracy.
2. The invention is provided with a first pressure sensor for measuring the drift diameter mud pressure and a second pressure sensor for measuring the annular mud pressure, wherein the first pressure sensor and the second pressure sensor are electrically connected with a circuit board, and the circuit board records, stores or transmits the measured mud pressure value to an uploading device.
4. In the invention, the first pressure sensor and the second pressure sensor are clamped between the fixed plate and the third cover plate, the third cover plate and the third groove are provided with the pore canal for mud to pass through, and the pore canal corresponds to the first pressure sensor and the second pressure sensor respectively, and the later stage is easy to clean.
5. The wear-resistant sleeve is arranged in the invention, the wear-resistant sleeve penetrates through the third cover plate, the position of the wear-resistant sleeve corresponds to the second pressure sensor, the effects of damping and reducing abrasion can be achieved, once the abrasion is serious, only the wear-resistant sleeve is needed to be replaced, the third cover plate or the whole nonmagnetic shell is not needed to be replaced, the maintenance cost is greatly reduced, and the replacement is convenient.
6. The circuit board can record and store data and upload data.
7. The invention has simple structure, convenient installation and disassembly and reduced later maintenance difficulty.
The underground engineering parameter measuring instrument provided by the invention can be used for measuring the pressure and acceleration of petroleum well perforation and high-energy gas fracturing, and can also be used for underground testing of hydrology, water conservancy and geological drilling.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art may combine and combine the different embodiments or examples described in this specification.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications and alternatives to the above embodiments may be made by those skilled in the art within the scope of the invention.
Claims (8)
1. An underground engineering parameter measuring instrument is characterized by comprising a non-magnetic shell (1), a battery (2), a circuit board (3), a sensor assembly (4) and a plurality of strain gauge groups which are arranged in pairs,
the non-magnetic shell (1) is circumferentially provided with a first groove, a second groove, a third groove and a plurality of fourth grooves which are arranged in pairs, the first groove, the second groove, the third groove and the fourth grooves are all axially parallel to the non-magnetic shell (1), the first groove, the second groove and the third groove are all arranged close to one end of the non-magnetic shell (1), the fourth grooves are all arranged close to the other end of the non-magnetic shell (1), and each pair of the fourth grooves are symmetrical to each other relative to the axis of the non-magnetic shell (1);
the battery (2) is accommodated in a cavity formed by connecting the first groove with the first cover plate;
the circuit board (3) is accommodated in a cavity formed by connecting the second groove with the second cover plate;
the sensor component (4) is accommodated in a cavity formed by connecting the third groove with a third cover plate;
the strain gauge group is accommodated in a cavity formed by connecting the fourth groove with the fourth cover plate; the strain gauge group comprises a first strain gauge (5), the first strain gauge (5) is arranged at one end of the fourth groove, and a pair of first strain gauges (5) which are 180-degree symmetrical form a bridge for measuring bit pressure; the first strain gauge (5) comprises a first strain gauge and a second strain gauge, the included angle between the first strain gauge and the horizontal plane is 0 degrees, the included angle between the second strain gauge and the horizontal plane is 90 degrees, and the first strain gauge and the second strain gauge are arranged side by side along the width direction of the fourth groove;
the battery (2), the strain gauge set and the sensor assembly (4) are all connected with the circuit board (3).
2. The downhole engineering parameter measurement instrument according to claim 1, wherein the sensor assembly (4) comprises a first pressure sensor for measuring the drift diameter mud pressure and a second pressure sensor for measuring the annulus mud pressure;
the first pressure sensor is arranged radially inwards of the nonmagnetic shell (1), and the second pressure sensor is arranged radially outwards of the nonmagnetic shell (1).
3. The downhole engineering parameter measuring instrument according to claim 2, wherein the sensor assembly (4) further comprises a fixing plate, the fixing plate being accommodated in the third recess, the first pressure sensor and the second pressure sensor being clamped between the fixing plate and the third cover plate.
4. A downhole engineering parameter measuring instrument according to claim 2, wherein the sensor assembly (4) further comprises a wear sleeve, one end of the wear sleeve penetrating the inner wall of the non-magnetic housing (1), the other end of the wear sleeve corresponding to the second pressure sensor.
5. The downhole engineering parameter measuring instrument according to claim 1, wherein the strain gauge set comprises a second strain gauge (6), the second strain gauge (6) being arranged at the other end of the fourth groove, a pair of the second strain gauge (6) being 180 ° symmetrical to each other forming a bridge for measuring torque;
the second strain gauge (6) comprises a third strain gauge and a fourth strain gauge, the included angle between the third strain gauge and the horizontal plane is 45 degrees, the included angle between the fourth strain gauge and the horizontal plane is 135 degrees, and the third strain gauge and the fourth strain gauge are arranged side by side along the width direction of the fourth groove.
6. Downhole engineering parameter measuring instrument according to claim 1, wherein the first groove, the second groove and the third groove are evenly distributed along the circumference of the nonmagnetic casing (1).
7. The downhole engineering parameter measurement tool of claim 1, wherein the number of fourth grooves is two.
8. The downhole engineering parameter measuring instrument according to claim 1, further comprising a three-dimensional accelerometer (7), the three-dimensional accelerometer (7) being arranged in the second recess, the three-dimensional accelerometer (7) being electrically connected with the circuit board (3).
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| CN107829726A (en) * | 2017-12-14 | 2018-03-23 | 杭州丰禾石油科技有限公司 | A kind of connector for logging while drilling |
| CN108801519B (en) * | 2018-04-28 | 2023-05-02 | 中国石油天然气集团有限公司 | While-drilling torque sensor and torque measurement method |
| CN108593202B (en) * | 2018-04-28 | 2021-05-28 | 中国石油天然气集团有限公司 | Calibration method system for torque measurement |
| CN108798629B (en) * | 2018-04-28 | 2021-09-17 | 中国石油天然气集团有限公司 | Bridge connection structure for measurement while drilling and torque measurement method |
| CN114199429A (en) * | 2021-12-06 | 2022-03-18 | 北京信息科技大学 | Monitoring device for working state of torsion impactor |
| CN114562255B (en) * | 2022-03-01 | 2023-03-24 | 杭州丰禾石油科技有限公司 | Underground bit pressure torque measurement while drilling instrument and underground bit pressure torque measurement method |
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| CN106640052A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Embedded type while-drilling downhole working condition measuring device |
| CN207363653U (en) * | 2017-07-10 | 2018-05-15 | 贝兹维仪器(苏州)有限公司 | A kind of underground engineering parameter measuring instrument |
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| CN106640052A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Embedded type while-drilling downhole working condition measuring device |
| CN105484742A (en) * | 2015-12-16 | 2016-04-13 | 中国石油天然气集团公司 | Multi-parameter logging while drilling apparatus |
| CN207363653U (en) * | 2017-07-10 | 2018-05-15 | 贝兹维仪器(苏州)有限公司 | A kind of underground engineering parameter measuring instrument |
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