CN209942807U - Underground small-size directional measurement while drilling exploring tube - Google Patents
Underground small-size directional measurement while drilling exploring tube Download PDFInfo
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- CN209942807U CN209942807U CN201920253605.XU CN201920253605U CN209942807U CN 209942807 U CN209942807 U CN 209942807U CN 201920253605 U CN201920253605 U CN 201920253605U CN 209942807 U CN209942807 U CN 209942807U
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Abstract
The utility model discloses a small-size is along with boring directional measurement in pit and is visited pipe utilizes circuit, sensor, the mechanical structure design of optimizing space size, realizes external diameter less than or equal to 35 mm's along with boring directional measurement and visits pipe. The utility model relates to a survey pipe along with boring directional measurement adopts high accuracy sensor to measure earth gravitational field and geomagnetic field to confirm drilling tool gesture and well orbit. The utility model discloses increased the vibration and the impact of a wide range sensor measurement drilling tool for confirm that the operating condition improves safety in the pit. The utility model discloses a type interface is detained to the screw thread of single core contact pin in both ends area, with power supply and communication integration to a bus, avoided the multicore to connect occupation space's problem.
Description
Technical Field
The utility model relates to a directional measurement equipment technical field, concretely relates to small-size along with boring directional measurement probe in pit.
Background
The directional measurement while drilling probe is a typical measurement while drilling device and is widely applied to the development of petroleum drilling. The directional measurement while drilling probe determines the posture of a drilling tool by measuring the earth gravity field and the earth magnetic field, thereby obtaining the well track and guiding the drilling operation.
The external diameter of the directional measurement while drilling probe mainly used at present is 44.5mm, 48mm, 50.8mm and the like, and the directional measurement while drilling probe can meet the drilling operation requirement of common borehole size. Most of oil and gas fields and oil and gas resources in China are in the middle and later development stages, deep sea, deep layer, mountain land, high-sulfur-content and low-permeability drilling environments, and construction conditions such as high (high temperature and high pressure), deep (deep well), far (large displacement), thin (thin oil layer), broken (small broken block oil zone) and the like, so that the exploration and development of the oil and gas fields are more and more difficult. The size of a well bore in deep well operation can be gradually reduced, the external diameter of the original directional measurement while drilling probe is overlarge, and the directional measurement while drilling probe cannot be suitable for drilling operation of small well bores (smaller than 172mm) and ultra-small well bores (smaller than 120 mm).
Based on the above analysis, a small-sized directional measurement while drilling probe is urgently needed to be provided at present, and the problem of track measurement of slim hole and ultra-small experience drilling operation is solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above-mentioned defect among the prior art, provide a small-size along with boring directional measurement probe in pit.
The purpose of the utility model can be achieved by adopting the following technical scheme:
a small-size underground probe tube for directional measurement while drilling comprises a lower end connector 1, a lower end pin structure 2, a protective barrel 3, a directional sensor structure 4, a circuit framework 5, an upper end pin structure 6, an upper end connector 7, a sensor module and a circuit board, wherein the directional sensor structure 4 and the circuit framework 5 are fixed at the middle position in the protective barrel 3, the lower end connector 1, the lower end pin structure 2, the upper end pin structure 6 and the upper end connector 7 are respectively fixed at two ends of the protective barrel 3, the sensor module is fixed on the directional sensor structure 4, and the circuit board is fixed on the circuit framework 5;
the upper end contact pin of the upper end joint 7 is clamped into the upper end contact pin structure 6, the lower end contact pin of the lower end joint 1 is clamped into the lower end contact pin structure 2, the upper end contact pin 1 and the lower end contact pin 2 are communicated with each other by a lead in the probe tube,
the circuit board is integrated with a transformer, an external bus is connected into the transformer through an electrical connection interface of the probe tube, the external bus is a single-core bus, and a probe tube circuit integrated on the circuit board realizes the separation of power supply and communication signals through the transformer.
Further, the sensor module comprises a first MEMS sensor for measuring gravitational acceleration, a second MEMS sensor for measuring vibrations, and a third MEMS sensor for measuring magnetic fields.
Further, a core controller, a memory chip, a real-time clock chip and a communication chip are integrated on the circuit board, the core controller is connected with the sensor module through a communication bus and is respectively connected with the memory chip, the real-time clock chip and the communication chip, the core controller collects data of the first MEMS sensor, the second MEMS sensor and the third MEMS sensor according to a certain sampling frequency, meanwhile, time information of the real-time clock chip is read, the data and the time information are combined and stored in the memory chip, and the latest measurement data are sent out by the core controller through the communication chip after a reading command of an external bus is received.
Further, when the core controller collects data, firstly, vibration data of the second MEMS sensor is collected to be used for judging the vibration state of the system, if the vibration value exceeds a reasonable vibration range, the core processor continuously detects the vibration value, and the first MEMS sensor and the third MEMS sensor are started to carry out gravity acceleration and magnetic field measurement until the value reaches the reasonable range.
Furthermore, the upper end connector 7 is of a thread buckle type with a single-core female pin, and when the thread buckle type is matched with external threads, the internal single-core female pin is communicated with the external male pin, so that mechanical and electrical synchronous connection is realized.
Furthermore, the lower end connector 1 is of a thread buckle type with a single-core male contact pin, and when the thread buckle type is matched with external threads, the internal single-core male contact pin is communicated with the external female contact pin, so that mechanical and electrical synchronous connection is realized.
Furthermore, the protective cylinder 3 is made of beryllium copper, the diameter of the protective cylinder is 30-35mm, and the pressure resistance of 140MPa is realized.
Further, the reasonable vibration range is 0-5G, wherein G is the gravity acceleration of the earth.
The utility model discloses for prior art have following advantage and effect:
1. the utility model discloses utilize circuit, sensor, the mechanical structure design of optimizing space size, realize external diameter less than or equal to 35 mm's directional survey exploring tube along with boring.
2. The utility model relates to a survey pipe along with boring directional measurement adopts high accuracy sensor to measure earth gravitational field and geomagnetic field to confirm drilling tool gesture and well orbit.
3. The utility model discloses increased the vibration and the impact of a wide range sensor measurement drilling tool for confirm that the operating condition improves safety in the pit.
4. The utility model discloses a type interface is detained to the screw thread of single core contact pin in both ends area, with power supply and communication integration to a bus, avoided the multicore to connect occupation space's problem.
Drawings
FIG. 1 is a mechanical structure diagram of a small-sized underground directional measurement while drilling probe disclosed by the utility model;
FIG. 2 is a schematic diagram of a bus signal separation mode of a small-sized underground directional measurement while drilling probe according to the present invention;
FIG. 3 is a contact pin connection diagram of the small-sized underground directional measurement while drilling probe disclosed by the utility model;
fig. 4 is a schematic circuit board connection line diagram of the small-sized underground directional measurement while drilling probe of the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
The embodiment provides a small-size directional measurement while drilling exploring tube in pit, can be applicable to slim-hole drilling operation, improves assembly convenience and connection stability, carries out directional measurement according to borehole operation environment intelligence.
As shown in fig. 1, the mechanical structure of the probe tube includes a lower end connector 1, a lower end pin structure 2, a protection barrel 3, a directional sensor structure 4, a circuit framework 5, an upper end pin structure 6, an upper end connector 7, a sensor module and a circuit board, wherein the directional sensor structure 4 and the circuit framework 5 are fixed at the middle position in the protection barrel 3, the lower end connector 1 and the lower end pin structure 2, and the upper end pin structure 6 and the upper end connector 7 are respectively fixed at two ends of the protection barrel 3, the sensor module is fixed on the directional sensor structure 4, and the circuit board is fixed on the circuit framework 5.
The upper end connector 7 of the probe tube is in a thread buckle type with a single-core female contact pin. When the thread buckle type is matched with the external thread, the internal single-core female plug pin can be communicated with the external male plug pin. And mechanical and electrical synchronous connection is realized. The upper end joint of the probe tube can be adjusted according to the upper matching relation.
The lower end connector 1 of the probe tube is of a thread buckle type with a single-core male contact pin. When the thread buckle type is matched with the external thread, the internal single-core male pin can be communicated with the external female pin. And mechanical and electrical synchronous connection is realized. The lower end joint of the probe tube can be adjusted according to the matching relation of the lower part.
The protective cylinder 3 of the probe tube is made of beryllium copper, the diameter is 30-35mm, and the pressure resistance of 140MPa can be ensured. The protective cylinder 3 of the probe can be modified in thickness and diameter according to the pressure resistance requirement.
The circuit of the probe tube realizes the separation of power supply and communication signals through a transformer. As shown in fig. 2, 21 is an external bus, 22 is an internal power circuit, 23 is a communication positive signal receiving circuit, 24 is a communication negative signal receiving circuit, and 25 is a transformer for power supply communication isolation. The signals on the external bus are coupled dc power and ac communication signals. After the signal on the external bus 21 is connected to the transformer 25 through the electrical connection interface of the probe, all the alternating communication signals are loaded on the transformer 25, and the internal power circuit 22 receives the direct current power supply signal; the ac communication signal on the transformer 25 is amplified in proportion by the transformer 25 and then received by the communication positive signal receiving circuit 23 and the communication negative signal receiving circuit 24, and only the ac communication signal is received by the communication positive signal receiving circuit 23 and the communication negative signal receiving circuit 24. The transformer is fixed on the circuit board.
The external bus 21 (and the external bus 48 in fig. 4, and in essence both the external bus 21 in fig. 2 and the external bus 48 in fig. 4 refer to the same external bus) that is connected to the electrical connection interface of the probe is a single-core bus, i.e. a communication bus where power supply and communication are integrated into one wire. The probe tube adopts a transformer to realize the separation of a power supply and a communication signal of a single-core bus.
As shown in fig. 3, the upper end pin 1 and the lower end pin 2 of the probe are directly connected by a lead wire inside the probe. The upper end contact pin of the upper end joint 7 is clamped into the upper end contact pin structure 6, and the lower end contact pin of the lower end joint 1 is clamped into the lower end contact pin structure 2, so that the contact pins are supported and protected. The upper end joint 7 and the lower end joint 1 of the probe can be connected with other instruments, and the probe can be connected to any position of the bus system.
The circuit composition of the probe is shown in fig. 4. Wherein 41 is a core controller, which can adopt chips such as a singlechip, a DSP and the like; 42 is a first MEMS (Micro-Electro-Mechanical System) sensor for measuring gravitational acceleration; 43 is a second MEMS (Micro-Electro-Mechanical System) sensor that measures vibration; 44 is a third MEMS (Micro-Electro-Mechanical System) sensor that measures a magnetic field; 49 is a communication bus of the sensor, universal buses such as IIC, SPI and the like can be selected, a communication mode can also be designed by self, and the circuit complexity can be reduced and the integration level can be improved by connecting a plurality of sensors by a single bus; 45 is a memory chip, and can be realized by selecting a FLASH or RM chip; 46 is a real-time clock chip which provides time information for the whole probe; 47 is a communication chip which is a communication interface of the probe tube to the outside, and the whole machine adopts a single-core bus, so the communication chip is realized by selecting a 1553 bus chip; and 48, an external bus is used as an interface for supplying power and transmitting data to the outside.
The exploring tube measures the earth gravity field and the earth magnetic field by adopting a first MEMS sensor and a third MEMS sensor with high precision respectively, and calculates to obtain the posture of the drilling tool and the track of the borehole.
The probe tube measures vibration and impact of the drilling tool by adopting a second MEMS sensor with a large range, and intelligently executes directional measurement according to vibration and impact states.
The whole circuit can be divided into two parts, wherein a core controller 41, a memory chip 45, a real-time clock chip 46 and a communication chip 47 are integrated on a circuit board and fixed in the circuit framework 5 of fig. 1; the first MEMS sensor 42, the second MEMS sensor 43, and the third MEMS sensor 44 are integrated into one sensor module, which is placed in the directional sensor structure 4 of fig. 1. With proper sizing and optimization, the entire circuit can also be integrated into one module, all placed in the directional sensor structure 4 of fig. 1.
The core controller 41 collects data of the first MEMS sensor 42, the second MEMS sensor 43, and the third MEMS sensor 44 according to a certain sampling frequency, reads time information of the real-time clock chip 46, combines the data and the time information, and stores the data and the time information in the memory chip 45. The core controller 41 will send the latest measurement data out through the communication chip 47 after receiving the read command from the external bus 48. When the core controller 41 collects data, it first collects vibration data of the second MEMS sensor 43 to determine the vibration state of the system. If the core controller 41 finds that the vibration values are outside of a reasonable range (the reasonable range is 0-5G, G being the earth's gravitational acceleration), the core processor 41 will continue to detect the vibration values until the values reach the reasonable range before performing the gravitational acceleration and magnetic field measurements. The core processor 41 intelligently monitors the vibration data, and can avoid measuring data with large deviation under high vibration.
The upper end connector 7 and the lower end connector 1 of the probe are threaded buckle type connectors with single-core contact pins, the probe is in threaded connection by adopting a contact pin type, the temperature resistance of the probe can reach 150 ℃, and the vibration resistance of the probe can reach 20G.
The protective cylinder 3 of the probe is made of beryllium copper or stainless steel, and the pressure resistance can reach 140 MPa.
The electrical connection interface of the probe is a single core bus, i.e. a communication bus integrating power supply and communication into one line.
The probe tube adopts a transformer to realize the separation of a power supply and a communication signal of a single-core bus.
The upper end joint 7 and the lower end joint 1 of the probe are directly communicated, and the probe can be directly connected with other instruments without influencing the interface relation of the original system.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (8)
1. The underground small-size directional measurement while drilling probe is characterized by comprising a lower end connector, a lower end pin structure, a protective barrel, a directional sensor structure, a circuit framework, an upper end pin structure, an upper end connector, a sensor module and a circuit board, wherein the directional sensor structure and the circuit framework are fixed in the middle of the protective barrel, the lower end connector and the lower end pin structure as well as the upper end pin structure and the upper end connector are respectively fixed at two ends of the protective barrel, the sensor module is fixed on the directional sensor structure, and the circuit board is fixed on the circuit framework;
the upper end contact pin of the upper end joint is clamped into the upper end contact pin structure, the lower end contact pin of the lower end joint is clamped into the lower end contact pin structure, the upper end contact pin and the lower end contact pin are communicated with each other by a lead in the probe tube,
the circuit board is integrated with a transformer, an external bus is connected into the transformer through an electrical connection interface of the probe tube, the external bus is a single-core bus, and a probe tube circuit integrated on the circuit board realizes the separation of power supply and communication signals through the transformer.
2. The directional measurement while drilling probe of claim 1, wherein the sensor module comprises a first MEMS sensor for measuring gravitational acceleration, a second MEMS sensor for measuring vibration, and a third MEMS sensor for measuring magnetic field.
3. The downhole small-size directional measurement while drilling probe according to claim 2, wherein the circuit board is integrated with a core controller, a memory chip, a real-time clock chip and a communication chip, the core controller is connected with the sensor module through a communication bus and is respectively connected with the memory chip, the real-time clock chip and the communication chip, the core controller collects data of the first MEMS sensor, the second MEMS sensor and the third MEMS sensor according to a certain sampling frequency, reads time information of the real-time clock chip, combines the data and the time information and stores the data and the time information in the memory chip, and the core controller sends out latest measurement data through the communication chip after receiving a reading command of an external bus.
4. The downhole small-sized directional measurement while drilling probe as claimed in claim 2, wherein the core controller, when acquiring data, first acquires vibration data of the second MEMS sensor for determining a vibration state of the system, and if the vibration value exceeds a reasonable vibration range, the core processor continuously detects the vibration value until the value reaches the reasonable range, and then starts the first MEMS sensor and the third MEMS sensor to perform the gravitational acceleration and magnetic field measurement.
5. The underground small-size directional measurement while drilling probe as claimed in claim 1, wherein the upper end connector is of a screw buckle type with a single-core female pin, and when the screw buckle type and the external screw are matched, the inner single-core female pin is communicated with the outer male pin, so that mechanical and electrical synchronous connection is realized.
6. The underground small-size directional measurement while drilling probe as claimed in claim 1, wherein the lower end connector is of a screw thread type with a single-core male contact pin, and when the screw thread type is matched with external screw threads, the internal single-core male contact pin is communicated with the external female contact pin, so that mechanical and electrical synchronous connection is realized.
7. The underground small-size directional measurement while drilling probe as claimed in claim 1, wherein the protective cylinder is made of beryllium copper, has a diameter of 30-35mm, and realizes a pressure resistance of 140 MPa.
8. The downhole small-sized directional measurement while drilling probe as claimed in claim 4, wherein the reasonable vibration range is 0-5G, wherein G is the acceleration of gravity of the earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920253605.XU CN209942807U (en) | 2019-02-28 | 2019-02-28 | Underground small-size directional measurement while drilling exploring tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920253605.XU CN209942807U (en) | 2019-02-28 | 2019-02-28 | Underground small-size directional measurement while drilling exploring tube |
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| Publication Number | Publication Date |
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| CN209942807U true CN209942807U (en) | 2020-01-14 |
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| CN201920253605.XU Active CN209942807U (en) | 2019-02-28 | 2019-02-28 | Underground small-size directional measurement while drilling exploring tube |
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- 2019-02-28 CN CN201920253605.XU patent/CN209942807U/en active Active
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