CN210195733U - Downhole parameter measuring tool for safe drilling - Google Patents
Downhole parameter measuring tool for safe drilling Download PDFInfo
- Publication number
- CN210195733U CN210195733U CN201921055065.0U CN201921055065U CN210195733U CN 210195733 U CN210195733 U CN 210195733U CN 201921055065 U CN201921055065 U CN 201921055065U CN 210195733 U CN210195733 U CN 210195733U
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- pump
- submersible
- underground
- downhole
- submersible motor
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Abstract
The utility model provides a safe drilling downhole parameter measuring tool, including downhole detecting instrument, submersible motor, power cable, production tubing, submersible pump, stainless steel capillary, pump outlet joint and submersible electric pump well head, downhole detecting instrument, submersible motor, power cable, submersible pump, stainless steel capillary, pump outlet joint are all installed inside production tubing, submersible motor lower part connects downhole detecting instrument, submersible pump connects submersible motor, pump outlet joint connects on submersible pump upper portion, power cable lower extreme connects submersible motor, stainless steel capillary lower extreme connects downhole detecting instrument, submersible electric pump well head is installed on production tubing upper portion, the utility model has the advantages of reasonable design, convenient use, carry out downhole long-distance periodic power supply through ground secondary instrument, under the condition that special data transmission and downhole power supply cable are not additionally laid, remote power supply and parameter detection of the underground comprehensive measuring device are realized by means of a power cable of the submersible motor.
Description
Technical Field
The utility model relates to an oil drilling technical field, concretely relates to safe drilling downhole parameter measuring tool.
Background
With the continuous deepening of oil exploration and development, stratum structures are more and more complex, special process wells such as extended reach wells, long horizontal section horizontal wells and the like are more and more, and the drilling safety of the wells faces a great challenge. If the annular liquid column pressure cannot balance the formation pressure, downhole complexity such as well leakage, downhole fluid infiltration, borehole collapse and the like can be caused, and well control is out of control in severe cases; if the well hole is not clean due to unsmooth carrying of drilling fluid or formation of a rock debris bed by rock debris deposition, severe pressure supporting during drilling can be caused, and the drill is blocked or even stuck when being tripped. The measurement of the annular pressure is helpful for keeping the equivalent circulating density in a safe density window of the drilling fluid, reducing and eliminating the complex conditions under the well and shortening the drilling time; meanwhile, the hydraulic and rheological information of the drilling fluid can be obtained, the drilling process is optimized, and the formation of a rock debris bed is reduced. Therefore, measurement of the annulus pressure during drilling is extremely important for maintaining downhole pressure balance and predicting wellbore cleanliness. The measurement of the annular pressure can realize the continuous monitoring of the underground pressure, and provides a real data basis and a scientific basis for the self-adaptive fine control of the underground pressure in the future.
At present, the underground annular pressure data is obtained by theoretical calculation of parameters such as formation pressure gradient, mud proportion and the like, but the accuracy of the data is poor due to the complexity of underground pressure causes, so that the real pressure condition is difficult to accurately reflect, and the practicability is basically lost. Therefore, a measuring tool which is arranged on a bottom hole drilling tool, particularly at the position close to a drill bit, and can directly measure the annular pressure parameter in the well is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above-mentioned not enough, provide a safe drilling downhole parameter measuring instrument.
The utility model aims at realizing through the following technical scheme:
the utility model provides a safe drilling downhole parameter measuring tool, including underground detecting instrument, the motor dives oil, power cable, production oil pipe, the oil pump dives, stainless steel capillary, pump outlet joint and the oily charge pump well head of diving, underground detecting instrument, the motor that dives oil, power cable, the oil pump that dives oil, stainless steel capillary, pump outlet joint all installs inside production oil pipe, the motor sub-unit connection of diving oil is detecting instrument in the pit, the motor that dives oil is connected to the oil pump, pump outlet joint connects on the oil pump upper portion of diving, the motor that dives oil is connected to the power cable lower extreme, the detecting instrument in the pit is connected to stainless steel capillary lower extreme, the oily charge pump well head of diving is installed on.
The underground detection instrument comprises a cable penetrating contact pin, a pressure joint, a pressure sensor, a temperature sensor, a vibration sensor, a conditioning circuit board, an external sealing steel barrel, an underground filtering reactance and an underground anti-seismic structure, wherein the underground anti-seismic structure is installed inside the external sealing steel barrel, the underground filtering reactance is installed on the upper portion of the underground anti-seismic structure, the conditioning circuit board is installed on the left side of the underground filtering reactance, the pressure sensor, the temperature sensor and the vibration sensor are installed on the conditioning circuit board, the upper portion of the pressure sensor is connected with the pressure joint, and the cable penetrating contact pin is installed on the upper portion of the external.
The upper end of the power cable is connected with a ground reactance, and the ground reactance is connected with a secondary instrument.
The upper end of the stainless steel capillary is connected with an outlet joint of the pump.
The upper part of the underground detection instrument is connected with the submersible motor through the reducer union.
The utility model discloses following profitable effect has:
the utility model relates to a rationally, high durability and convenient use, carry out the long-range periodic power supply in the pit through ground secondary instrument, under the condition that does not additionally lay special data transmission and supply cable in the pit, rely on the power cable of oily motor of diving to realize the long-range power supply and the parameter detection of synthesizing measuring device in the pit, accomplish the measurement to the electric submersible motor neutral point leakage current through sensor and amplifier conditioning circuit, unit horizontal vibration, motor winding temperature, pump outlet pressure, pump inlet pressure, six parameters of pump inlet temperature, there is fine application prospect.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is the structure diagram of the downhole detecting instrument of the utility model.
Detailed Description
The invention will be further described with reference to the accompanying drawings:
as shown in fig. 1 and fig. 2, a downhole parameter measuring tool for safe drilling, including downhole detecting instrument 1, submersible motor 3, power cable 4, production tubing 5, submersible pump 6, stainless steel capillary 7, pump outlet connector 8 and submersible electric pump wellhead 9, downhole detecting instrument 1, submersible motor 3, power cable 4, submersible pump 6, stainless steel capillary 7, pump outlet connector 8 are all installed inside production tubing 5, submersible motor 3 sub-unit connection downhole detecting instrument 1, submersible pump 6 connects submersible motor 3, pump outlet connector 8 connects on submersible pump 6 upper portion, power cable 4 lower extreme connection submersible motor 3, stainless steel capillary 7 lower extreme connection downhole detecting instrument 1, submersible electric pump wellhead 9 is installed on production tubing 5 upper portion.
The underground detection instrument 1 comprises a cable penetrating pin 20, a pressure connector 19, a pressure sensor 18, a temperature sensor 17, a vibration sensor 16, a conditioning circuit board 15, an external sealing steel barrel 14, an underground filtering reactance 13 and an underground anti-seismic structure 12, wherein the underground anti-seismic structure 12 is installed inside the external sealing steel barrel 14, the underground filtering reactance 13 is installed on the upper portion of the underground anti-seismic structure 12, the conditioning circuit board 15 is installed on the left side of the underground filtering reactance 13, the pressure sensor 18, the temperature sensor 17 and the vibration sensor 16 are installed on the conditioning circuit board 15, the pressure connector 19 is connected to the upper portion of the pressure sensor 18, and the cable penetrating pin 20 is installed on the upper portion of the external sealing steel barrel 14.
The upper end of the power cable 4 is connected with a ground reactance 10, and the ground reactance is connected with a secondary instrument 11.
The upper end of the stainless steel capillary 7 is connected with an outlet joint 8 of the pump.
The upper part of the underground detection instrument 1 is connected with a submersible motor 3 through a reducer union 2.
The working principle is as follows: remote power supply and aboveground control to the underground measurement system are realized through ground instrument box and star type three-phase reactance, and detecting instrument installs in whole electric submersible pump unit bottommost, and it links to each other with latent oily motor through reducer union. The underground detection unit detects the inlet pressure of an underground pump, the outlet pressure of the pump, the inlet temperature of the pump, the winding temperature of a motor, the horizontal vibration of a unit and the leakage current of a neutral point through a signal amplification conditioning circuit by a high-temperature and high-pressure resistant sensor arranged in the underground detection unit, then performs voltage-current conversion through a multiplexer, is connected to the neutral point of the submersible motor through a penetrating contact pin, and transmits data to the well in a novel current loop mode. The instrument box is internally controlled by a control circuit to perform data processing such as sampling and conversion, and the data is transmitted to a display terminal through a serial port. The ground secondary instrument is provided with a corresponding standard communication interface, so that the downloading of program codes and the derivation of measurement data are facilitated.
The ground system comprises the following parts: one part is a control and remote power supply part for remotely supplying power to the downhole measurement system. The direct-current voltage is amplified through the voltage doubling rectifying circuit, periodic remote power supply is completed through control of the LPC2378 chip, and current data sampling of underground parameters is conducted. The other part is a terminal display part. The part is responsible for serial port communication with a control system, and sampling, converting and processing transmitted current data; and simultaneously comprises the display drive of the liquid crystal screen.
The underground system is completely centralized in a sealed steel cylinder, the filter reactor and the underground measuring circuit board are fixed in the steel cylinder through a U-shaped steel groove fixed together with the connecting joint, and the filter reactor and the underground measuring circuit board are connected to a motor star point through an electronic crossing contact pin. The measuring circuit is mainly divided into a sensor, a signal amplifying circuit, a time sequence logic circuit, a flyback DC conversion circuit and a voltage-current conversion circuit.
Claims (5)
1. The utility model provides a safe drilling downhole parameter measuring tool, includes underground detecting instrument, dive oil motor, power cable, production oil pipe, dive oil pump, stainless steel capillary, pump outlet joint and dive oil electric pump well head, its characterized in that: the underground detection instrument, the submersible motor, the power cable, the submersible pump, the stainless steel capillary tube and the pump outlet joint are all installed inside the production oil pipe, the lower part of the submersible motor is connected with the underground detection instrument, the submersible pump is connected with the submersible motor, the pump outlet joint is connected to the upper part of the submersible pump, the lower end of the power cable is connected with the submersible motor, the lower end of the stainless steel capillary tube is connected with the underground detection instrument, and the well head of the submersible electric pump is installed on the upper part of the production oil pipe.
2. A safe drilling downhole parameter measuring tool according to claim 1, wherein: the underground detection instrument comprises a cable penetrating contact pin, a pressure joint, a pressure sensor, a temperature sensor, a vibration sensor, a conditioning circuit board, an external sealing steel barrel, an underground filtering reactance and an underground anti-seismic structure, wherein the underground anti-seismic structure is installed inside the external sealing steel barrel, the underground filtering reactance is installed on the upper portion of the underground anti-seismic structure, the conditioning circuit board is installed on the left side of the underground filtering reactance, the pressure sensor, the temperature sensor and the vibration sensor are installed on the conditioning circuit board, the pressure joint is connected to the upper portion of the pressure sensor, and the cable penetrating contact pin is installed on the upper portion of the external sealing steel.
3. A safe drilling downhole parameter measuring tool according to claim 1, wherein: the upper end of the power cable is connected with a ground reactance, and the ground reactance is connected with a secondary instrument.
4. A safe drilling downhole parameter measuring tool according to claim 1, wherein: the upper end of the stainless steel capillary is connected with an outlet joint of the pump.
5. A safe drilling downhole parameter measuring tool according to claim 1, wherein: the upper part of the underground detection instrument is connected with the submersible motor through a reducer union.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921055065.0U CN210195733U (en) | 2019-07-08 | 2019-07-08 | Downhole parameter measuring tool for safe drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921055065.0U CN210195733U (en) | 2019-07-08 | 2019-07-08 | Downhole parameter measuring tool for safe drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210195733U true CN210195733U (en) | 2020-03-27 |
Family
ID=69869348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921055065.0U Expired - Fee Related CN210195733U (en) | 2019-07-08 | 2019-07-08 | Downhole parameter measuring tool for safe drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210195733U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177596A (en) * | 2020-08-25 | 2021-01-05 | 中海油能源发展股份有限公司 | Underground working condition instrument capable of being penetrated by power pump cable |
-
2019
- 2019-07-08 CN CN201921055065.0U patent/CN210195733U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177596A (en) * | 2020-08-25 | 2021-01-05 | 中海油能源发展股份有限公司 | Underground working condition instrument capable of being penetrated by power pump cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200327 Termination date: 20210708 |
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| CF01 | Termination of patent right due to non-payment of annual fee |