CN2360605Y - Well electronic baresthesiometer - Google Patents
Well electronic baresthesiometer Download PDFInfo
- Publication number
- CN2360605Y CN2360605Y CN98250915U CN98250915U CN2360605Y CN 2360605 Y CN2360605 Y CN 2360605Y CN 98250915 U CN98250915 U CN 98250915U CN 98250915 U CN98250915 U CN 98250915U CN 2360605 Y CN2360605 Y CN 2360605Y
- Authority
- CN
- China
- Prior art keywords
- pressure
- feed liquor
- circuit
- transmission joint
- measurement mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to an electronic baresthesiometer used for a well of an oil field, which is composed of a circuit casing pipe, a pressure transmission joint and a liquid (or gas) feeding head, wherein the pressure transducer is arranged in the pressure transmission joint in a sealing way, the liquid feeding head has a liquid (or gas) feeding pipe, a cushion chamber is arranged in the liquid feeding head, and the cushion chamber is communicated with the liquid inlet pipe and the stress face of the pressure transducer. The pressure underground the well acts on the pressure transducer through the liquid inlet pipe and the cushion chamber, which changes pressure to an electrical signal that has the corresponding relation with the pressure by a strain element; thus, the pressure and the temperature of the measured position underground the well can be automatically stored after the electrical signal is processed by a measuring device. The utility model has the advantages of strong applicability, convenient use, accurate measurement and high automation degree.
Description
The utility model relates to a kind of liquid manometer, particularly a kind of device that utilizes the electronics pressure cell to measure oil field down-hole liquid or gas pressure.
The down-hole pressure of oilfield is an important measuring parameter.The instrument that is used for the measuring well downforce in the actual at present test has the following disadvantages, and at first, owing to be used for the pressure gauge of down-hole, is loaded in the elongated pipe, and its measuring circuit plate can only be carefully to grow, and is impaired when being subjected to vibrating easily; Secondly, pressure sensor pressurized acting surface directly is communicated with oil well, the damage of build-up of pressure sensor when oil well pressure is suddenlyd change easily; In addition, because communication interface adopts the multicore interface, occur the communication loose contact easily, communication connector is easy to damage.
The purpose of this utility model is to overcome above-described defective, provide a kind of can the accurately easy novel downhole electronic pressure bomb that measures down-hole liquid or gas pressure value reliably.
The utility model is achieved in that the utility model includes feed liquor (or gas) pipe, sensor and measurement mechanism, it is characterized in that being provided be tightly connected successively all-in-one-piece circuit sleeve pipe, pressure transmission joint and feed liquor (or gas) head.Be sealed and installed with pressure sensor in the pressure transmission joint, above-mentioned feed liquor (or gas) pipe is arranged in this feed liquor (or gas) head, and feed liquor (or gas) head is provided with cushion chamber, and the compression face of pressure sensor communicates in cushion chamber and feed liquor (or gas) pipe and the pressure transmission joint.Be provided with measurement mechanism and power supply in the circuit sleeve pipe, the signal of pressure sensor is connected with measurement mechanism by holding wire, and the output signal that measurement mechanism produces spreads out of by single core outputting communication interface.
The snubber of relieving impact pressure can be set in the cushion chamber, snubber is made up of a skeleton and the tubule on skeleton, skeleton is connected with the pressure transmission joint sealing, and tubule one end is by feed liquor (or gas) pipe and oil well UNICOM, and the other end communicates with the compression face of pressure sensor.
Measurement mechanism is installed on two elongated wiring boards, and two wiring boards support mutually and are fixed on the pressure transmission joint through the vibration damping rubber cushion.
Circuit sleeve pipe, pressure transmission joint and feed liquor (or gas) head are screwed into one or overall structure for dividing body structure.
Measurement mechanism is made up of measuring circuit, change-over circuit, control circuit and power supply.
Strain gauge element on the pressure sensor and fixed resistance are formed four brachium pontis R of bridge-type measuring bridge circuit
1-R
4, the signal on the pressure sensor is connected on the measuring bridge by holding wire.
Change-over circuit is mainly by amplifier IC
1With A/D converter IC
2Form amplifier IC
1Input be connected output and A/D converter IC with the output ab of bridge measuring circuit
2Input connect A/D converter IC
2Output be connected to the control circuit input.
Control circuit is one to have the microprocessor IC of program storage
3With data storage IC
4, microprocessor IC
3Signal connect with external equipment by single core communication interface, communication interface (1) is single core interface.
The utility model compared with prior art, its advantage be simple in structure, applicability is strong, measure accurately, and have stronger resistance to shock.
Description of drawings:
Fig. 1 is a kind of example structure schematic sectional view of the utility model;
Fig. 2 is the circuit block diagram of a kind of its measurement mechanism of embodiment of the utility model;
Fig. 3 is the electrical schematic diagram of change-over circuit and control circuit in the utility model examples measure device.
Further specify preferred embodiment of the present utility model below in conjunction with accompanying drawing.As shown in Figure 1, the utility model comprises feed liquor (or gas) pipe, sensor and measurement mechanism, it is characterized in that being provided with all-in-one-piece circuit sleeve pipe 5, pressure transmission joint 3 and the feed liquor (or gas) 4 that be tightly connected successively, be sealed and installed with pressure sensor 31 in the pressure transmission joint 3, above-mentioned feed liquor (or gas) pipe 41 is arranged in this feed liquor (or gas) 4, be provided with cushion chamber 42 in the feed liquor (or gas) 4, the compression face of pressure sensor 31 communicates in cushion chamber 42 and feed liquor (or gas) pipe 41 and the pressure transmission joint 3.Be provided with measurement mechanism 6 and power supply 2 in the circuit sleeve pipe 5, the signal of pressure sensor 31 is connected with measurement mechanism 6 by holding wire, and the output signal that measurement mechanism 6 produces spreads out of by single core outputting communication interface 1.
Be equipped with the snubber of relieving impact pressure in the cushion chamber 42, snubber is made up of a skeleton 43 and the tubule 44 on skeleton 43, skeleton 43 is tightly connected with pressure transmission joint 3, tubule 44 1 ends are by feed liquor (or gas) pipe 41 and oil well UNICOM, and the other end communicates with the compression face 311 of pressure sensor 31.
Strain gauge element on the pressure sensor 32 and fixed resistance are formed four brachium pontis R of bridge-type measuring bridge circuit
1-R
4, the signal on the pressure sensor 31 is connected on the measuring bridge by holding wire 64.
See Fig. 3, change-over circuit is mainly by amplifier IC
1With A/D converter IC
2Form amplifier IC
1Input be connected output and A/D converter IC with the output ab of bridge measuring circuit
2Input connect A/D converter IC
2Output be connected to the control circuit input.
Control circuit is one to have the microprocessor IC of program storage
3With data storage IC
4, microprocessor IC
3Signal pass through IC
3J3-1 end connects with external equipment through single core communication interface 1, communication interface 1 is single core interface, the structural strength height of single core interface contacts well the reliability height of use.
The resistance-strain element of pressure sensor 31 or the resistance bridge that connects into fixed resistance, by battery 2 provide for bridge voltage U
0, be added in the dc end of bridge circuit, again electric bridge is given balancing after, the ab output of electric bridge produces voltage signal Usc, and just only to experience the caused resistance variations of strain relevant with foil gauge 31.Because the resistance change of resistance strain gauge element is proportional on the pressure of fluid to be measured or gas and the pressure sensor, the size of the signal of telecommunication Usc that electric bridge ab output produces is in proportion with amount of differential pressure again.Therefore record the size of the electric bridge ab output end voltage Usc of resistance-strain element composition, also just obtain the force value of corresponding fluid to be measured or gas.
The variation of electric bridge ab terminal voltage Usc is through amplifier IC
1Amplify and be transformed into the standard analog voltage signal, deliver to A/D converter IC
2Convert data signal to, deliver to microprocessor (CPU) IC of tape program memory
3Carry out acquisition process, be stored in data storage IC again
4The data field in so that carry out communication with plant and instrument such as aboveground playback apparatus or microprocessor easily by communication interface 1 at any time, the pressure data of each layer of down-hole gathered files or carry out further processing.
The structure of snubber and form can be multiple, utilize snubber to be protection domain of the present utility model with the device that slows down pressure jump and protect pressure sensor.
The utility model also can be measured the temperature parameter in the oil well in gaging pressure.
Claims (8)
1. downhole electronic pressure bomb, comprise feed liquor or tracheae, sensor and measurement mechanism, it is characterized in that being provided be tightly connected successively all-in-one-piece circuit sleeve pipe (5), pressure transmission joint (3) and feed liquor or gas head (4), be sealed and installed with pressure sensor (31) in the pressure transmission joint (3), above-mentioned feed liquor or tracheae (41) are arranged in this feed liquor or the gas head (4), be provided with cushion chamber (42) in feed liquor or the gas head (4), the compression face of the pressure sensor (31) in cushion chamber (42) and feed liquor or tracheae (41) and the pressure transmission joint (3) communicates; Be provided with measurement mechanism (6) and power supply (2) in the circuit sleeve pipe (5), the signal of pressure sensor (31) is connected with measurement mechanism (6) by holding wire, and the output signal that measurement mechanism (6) produces spreads out of by outputting communication interface (1).
2. downhole electronic pressure bomb according to claim 1, it is characterized in that being equipped with in the cushion chamber (42) snubber of relieving impact pressure, snubber is made up of a skeleton (43) and the tubule (44) on skeleton (43), skeleton (43) is tightly connected with pressure transmission joint (3), tubule (44) one ends are by feed liquor or tracheae (41) and oil well UNICOM, and the other end communicates with the compression face (311) of pressure sensor (31).
3. downhole electronic pressure bomb according to claim 1 and 2 is characterized in that measurement mechanism (6) is installed on two elongated wiring boards (61 and 62), and wiring board (61 and 62) supports mutually and is fixed on the pressure transmission joint (3) through vibration damping rubber cushion (63).
4. downhole electronic pressure bomb according to claim 1 and 2 is characterized in that circuit sleeve pipe (5), pressure transmission joint (3) and feed liquor or gas head (4) are screwed into one or overall structure for dividing body structure.
5. downhole electronic pressure bomb according to claim 1 and 2 is characterized in that measurement mechanism (6) is made up of measuring circuit, change-over circuit, control circuit and power supply (2).
6. downhole electronic pressure bomb according to claim 1 and 2 is characterized in that strain gauge element on the pressure sensor (31) and fixed resistance form four brachium pontis R of bridge-type measuring bridge circuit
1-R
4, the signal on the pressure sensor (31) is connected on the measuring bridge by holding wire (64).
7. downhole electronic pressure bomb according to claim 1 and 2 is characterized in that change-over circuit is mainly by amplifier IC
1With A/D converter IC
2Form amplifier IC
1Input be connected output and A/D converter IC with the output ab of bridge measuring circuit
2Input connect A/D converter IC
2Output be connected to the control circuit input.
8. downhole electronic pressure bomb according to claim 1 and 2 is characterized in that control circuit is one to have the microprocessor IC of program storage
3With data storage IC
4, microprocessor IC
3Signal connect with external equipment by single core communication interface (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98250915U CN2360605Y (en) | 1998-12-23 | 1998-12-23 | Well electronic baresthesiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98250915U CN2360605Y (en) | 1998-12-23 | 1998-12-23 | Well electronic baresthesiometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2360605Y true CN2360605Y (en) | 2000-01-26 |
Family
ID=33995208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98250915U Expired - Fee Related CN2360605Y (en) | 1998-12-23 | 1998-12-23 | Well electronic baresthesiometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2360605Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182059A (en) * | 2015-10-08 | 2015-12-23 | 中国石油集团渤海钻探工程有限公司 | Cell voltage automatic detection device for storage type underground electronic pressure gauge |
| CN105443114A (en) * | 2015-09-30 | 2016-03-30 | 贵州航天凯山石油仪器有限公司 | Method and structure of improving main engine of downhole electronic pressure gauge |
| CN112096369A (en) * | 2020-08-21 | 2020-12-18 | 中石化石油工程技术服务有限公司 | Guide short section based on SP and buffer force measurement |
-
1998
- 1998-12-23 CN CN98250915U patent/CN2360605Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443114A (en) * | 2015-09-30 | 2016-03-30 | 贵州航天凯山石油仪器有限公司 | Method and structure of improving main engine of downhole electronic pressure gauge |
| CN105182059A (en) * | 2015-10-08 | 2015-12-23 | 中国石油集团渤海钻探工程有限公司 | Cell voltage automatic detection device for storage type underground electronic pressure gauge |
| CN112096369A (en) * | 2020-08-21 | 2020-12-18 | 中石化石油工程技术服务有限公司 | Guide short section based on SP and buffer force measurement |
| CN112096369B (en) * | 2020-08-21 | 2024-03-15 | 中石化石油工程技术服务有限公司 | Guiding nipple based on SP and buffer force measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |