CN110965993B - Push-leaning type three-arm temperature logging instrument - Google Patents
Push-leaning type three-arm temperature logging instrument Download PDFInfo
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- CN110965993B CN110965993B CN201911136643.8A CN201911136643A CN110965993B CN 110965993 B CN110965993 B CN 110965993B CN 201911136643 A CN201911136643 A CN 201911136643A CN 110965993 B CN110965993 B CN 110965993B
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Abstract
The invention discloses a push-leaning type three-arm temperature logging instrument.A short section of an electronic instrument is arranged at the upper end of the instrument to provide electric energy for a power short section, a probe short section is controlled through the power short section, and a signal returned by the probe short section is received. The power short section provides power and control for the probe short section, is arranged at the lowermost end and is connected with the probe short section through threads and a sealing assembly. The probe nipple is positioned in the middle of the instrument, three temperature sensors can be attached to the sleeve through pushing action, continuous measurement is carried out, and the sensors can be retracted into the shell of the instrument after the measurement is finished. The diameter measuring instrument can be put into the annular space of the inner pipe and the two layers of pipe columns for testing or measuring; a plurality of temperature probes are arranged in the temperature sensor, so that temperature data in a plurality of directions can be obtained simultaneously, and the data coverage is good; when the probe does not work, the probe is recovered, so that the possibility of encountering blockage and card is reduced; the pushing state can be changed according to the inner diameters of different measuring pipes, so that the pushing force is consistent, and the comparison and analysis of measured data are facilitated.
Description
Technical Field
The invention relates to a petroleum well logging technology, in particular to an instrument for measuring in a concentric double-tube separate injection process well, which is applied to the field of production well logging, and specifically relates to a push-type three-arm temperature logging instrument.
Background
A new water injection process, namely a concentric double-pipe separate injection process, is adopted in domestic oil fields at present. The concentric double-tube separate injection process is to put a 1.9-inch inner tube into a 3.5-inch oil tube, and the lower part of the tubular column is separated from the annular space of two layers of tubular columns by adopting a sealing device. The lower layer is injected through the inner pipe, and the upper layer is injected with water through the annular space of the two layers of pipe columns. Compared with the traditional water injection process, the water injection process has the advantages that the regular test and allocation are not needed, the ground measurement is accurate relative to the underground measurement and allocation data, and the like. At present, more than 150 water injection wells are available in oil fields of Changqing and the like, and more than 500 water injection wells are expected to be available in the process at the end of the next year. Because the existing isotope logging instrument has larger overall dimension and can not be put into an inner pipe (DN 38) and an annulus of two layers of pipe columns for carrying out test work, no logging instrument and method can test the water injection effect of the water injection well process at present, and therefore, research and development of related measuring instruments are urgently needed under the condition so as to solve the test problem in the water injection process of the process.
Disclosure of Invention
The invention aims to provide a push-type three-arm temperature logging instrument, which aims to solve the problem that the logging instrument and method in the prior art can be used for detecting the water injection effect of a concentric double-tube separate injection process.
A push-leaning type three-arm temperature logging instrument comprises an electronic instrument short section, a probe short section and a power short section;
the probe short section comprises a probe outer shell, an inner shaft, a connecting rod mechanism, a sliding shaft and an elastic element, wherein the upper end of the probe outer shell is connected with the lower end of the electronic instrument short section, and the lower end of the probe outer shell is connected with the upper end of the power short section; the inner shaft, the sliding shaft and the elastic element are sequentially arranged in the inner cavity of the probe shell from top to bottom, the inner shaft is fixedly connected between the probe shells, the sliding shaft can freely slide in the inner cavity of the probe shell, and the lower end of the sliding shaft is connected with the upper end of the elastic element;
a plurality of link mechanisms are uniformly distributed along the circumferential direction of the probe shell, each link mechanism comprises a driven arm, a temperature probe assembly, an auxiliary arm and a driving arm, the upper end of each driven arm penetrates through the probe shell and is hinged with the inner shaft, the lower end of each driven arm is hinged with the upper end of the temperature probe assembly, the lower end of the temperature probe assembly is hinged with the upper end of the driving arm, the lower end of the driving arm penetrates through the probe shell and is hinged with the sliding shaft, the upper end of each auxiliary arm penetrates through the probe shell and is hinged with the inner shaft, the lower end of each auxiliary arm is hinged to a hinged connecting shaft at the lower end of the temperature probe assembly and the upper end of the driving arm, and the probe shell is provided with long holes for the driven arm, the auxiliary arm and the driving arm to move fully;
a driving part is arranged in the power nipple, and the driving part can drive the elastic element to move up and down in the inner cavity of the probe shell;
be equipped with control circuit in the electron appearance nipple joint, driver component and temperature probe assembly all with control circuit connects, control circuit can control the driver component action and can receive and handle the data that the temperature probe assembly gathered.
The sliding shaft is a hollow shaft and is sleeved at the lower end of the inner shaft, and the sliding shaft is in clearance fit with the inner shaft and the probe shell.
The elastic element comprises a spring shaft and a spring sleeved on the spring shaft, the upper end of the spring shaft is connected with the lower end of the sliding shaft, and the lower end of the spring is connected with a driving part in the power short section.
The hinged joint of the inner shaft and the driven arm, the hinged joint of the driven arm and the temperature probe assembly, the hinged joint of the temperature probe assembly and the auxiliary arm and the hinged joint of the auxiliary arm and the inner shaft are respectively positioned on four vertexes of the same parallelogram.
The temperature probe assembly comprises a temperature probe, a first connector and a second connector, the first connector and the second connector are arranged at two ends of the temperature probe, the lower end of the driven arm is hinged with the upper end of the first connector, the lower end of the auxiliary arm and the upper end of the driving arm are hinged with the lower end of the second connector, mounting holes for the upper end and the lower end of the temperature probe to extend into are respectively formed in the lower end of the first connector and the upper end of the second connector, the temperature probe can rotate relative to the first connector and the second connector, limiting screws for axially limiting the upper end and the lower end of the temperature probe are respectively arranged on the first connector and the second connector, and a preset gap is reserved between the tops of the limiting screws and the temperature probe.
The control circuit in the electronic instrument short section comprises a DC-DC power supply module, a crystal oscillator, a single chip microcomputer, a communication module, an AD sampling chip and a reference voltage module, wherein the crystal oscillator is connected with the single chip microcomputer, each temperature probe assembly is correspondingly connected with one AD sampling chip, the AD sampling chip is connected with the single chip microcomputer, the reference voltage module is connected with the AD sampling chip, the communication module is in communication connection with the single chip microcomputer, a driving part in the power short section is connected with the communication module, and the DC-DC power supply module is respectively connected with the crystal oscillator, the single chip microcomputer, the communication module, the AD sampling chip and the reference voltage module.
The electron instrument nipple joint is including protecting the cap, the top connection, the electron instrument shell, single core seal assembly, power module, the line skeleton, circuit board and multicore joint, it passes through the screw thread and links to each other with the upper end of top connection to protect the cap, single core seal assembly installs in the hole of top connection, the lower extreme of top connection passes through the screw thread and is connected with the upper end of electron instrument shell, the line skeleton sets up in electron instrument shell inner chamber, power module arranges the upper end of line skeleton in, circuit board fixed mounting is at the lower extreme of line skeleton, control circuit connects on the circuit board, the lower extreme of line skeleton and the upper end fixed connection that the multicore connects, install a plurality of pressure-bearing connectors in the multicore joint, the upper end that the multicore connects still with the lower extreme threaded connection of electron instrument shell, the lower extreme that the multicore connects and the upper end threaded connection of probe shell.
The power nipple comprises a power shell, a guide plug and a driving component arranged in an inner cavity of the power shell, the driving component comprises a power shaft, a power joint, a screw rod, a screw sleeve shaft, a speed reducer and a motor, the upper end of the power joint is in threaded connection with the lower end of the probe shell, the lower end of the power joint is in threaded connection with the upper end of the power shell, and the lower end of the power joint extends towards the lower part of the power shell; the power shaft penetrates through the power joint, a limiting structure is arranged between the power shafts and used for enabling the power shaft to only move along the axial direction of the power joint, and the upper end of the power shaft is connected with the lower end of the elastic element; the power shaft is of a hollow structure, and a pressure-bearing connector is arranged in an inner hole of the power shaft; the lower end of the power shaft is fixedly connected with a screw rod, the speed reducer is in threaded connection with the lower end of the power joint, the output end of the speed reducer is connected with a threaded sleeve shaft, the threaded sleeve shaft is in matched connection with the screw rod, and the lower end of the speed reducer is connected with a motor transmission shaft; the lower end of the power shell is fixedly connected with the upper end of the guide plug.
The upper end fixed connection of power shaft lower extreme through stop collar and lock ring and lead screw, the stop collar inner chamber is stretched into to the upper end of lead screw, the upper end of lead screw is the echelonment, all set up the lock ring between the lower part of lead screw and the stop collar and between the upper portion of lead screw and the lower part of power shaft, the shape of threaded connection power joint lower extreme inner chamber cross-section between power shaft and the stop collar is regular hexagon, the cross-section of stop collar is the regular hexagon with power joint lower extreme inner chamber shape looks adaptation, the cross-sectional shape of stop collar is circular, the diameter of stop collar is not more than power joint lower extreme inner chamber cross-section inscribe circle diameter.
The inner chamber of power shell still is equipped with balanced piston, and balanced piston is located power joint's below, and balanced piston's upper end diameter is great and with power shell's inner chamber cooperation, and balanced piston's lower extreme diameter is less, is full of hydraulic oil in the space of being enclosed city by balanced piston, power joint and power shell, and power shell has seted up the through-hole in the position that corresponds with balanced piston lower extreme.
The invention has the following beneficial effects:
in the push-leaning type three-arm temperature logging instrument probe nipple, an inner shaft is fixedly connected between probe shells, a sliding shaft can freely slide in the inner cavity of the probe shells, the upper ends of driven arms penetrate through the probe shells and are hinged with the inner shaft, the lower ends of the driven arms are hinged with the upper ends of temperature probe assemblies, the lower ends of the temperature probe assemblies are hinged with the upper ends of driving arms, the lower ends of the driving arms penetrate through the probe shells and are hinged with the sliding shaft, the upper ends of the auxiliary arms penetrate through the probe shells and are hinged with the inner shaft, the lower ends of the auxiliary arms are hinged to hinged shafts, the lower ends of the temperature probe assemblies are hinged with the upper ends of the driving arms, and long holes for the driven arms, the auxiliary arms and the driving arms to move fully are formed in the probe shells, so that the temperature probe assemblies in a connecting rod mechanism can be close to or far away from the probe shells by driving the sliding shaft, and the radiuses of circumferences where the temperature probe assemblies are located can be large or small so as to adapt to detection of different pipe diameters; the lower end of the sliding shaft is connected with the upper end of the elastic element, the driving part in the power nipple can drive the elastic element to move up and down in the inner cavity of the probe shell, and the elasticity of the elastic element is utilized, so that the connecting rod mechanism can have a certain deformation scope in the whole pushing type three-arm temperature logging instrument in the pipeline moving process, the rigidity of the whole pushing type three-arm temperature logging instrument in the circumferential direction is reduced, the whole pushing type three-arm temperature logging instrument is difficult to block in the pipeline moving process, and meanwhile, the temperature probe assembly can be prevented from being damaged due to rigid impact and blocking; the control circuit is arranged in the electronic instrument short section, the control circuit can control the driving part to move and can receive and process data collected by the temperature probe assembly, so that the control circuit can realize the scattering and folding of the connecting rod mechanisms and acquire the temperature information of the detected part. In conclusion, the push-pull type three-arm temperature logging instrument can be placed in an inner pipe (such as DN 38), the temperature of the pipe wall in multiple directions can be measured, the water injection effect can be evaluated through temperature change, and the water injection process and the water injection effect can be tested.
Furthermore, the sliding shaft is a hollow shaft, the lower end of the inner shaft is sleeved with the sliding shaft, the stroke of the sliding shaft is guaranteed through the structural design, the length of the whole logging instrument is shortened, and meanwhile, the sliding shaft is limited by the inner shaft and the probe shell together, so that the sliding shaft is stable and smooth in sliding, and smooth in measurement can be guaranteed.
Furthermore, a hinged joint of the inner shaft and the driven arm, a hinged joint of the driven arm and the temperature probe assembly, a hinged joint of the temperature probe assembly and the auxiliary arm, and a hinged joint of the auxiliary arm and the inner shaft are respectively positioned on four vertexes of the same parallelogram, and at the moment, the temperature probe assembly is always parallel to the probe shell, so that the temperature probe assembly is in more full contact with the well wall, and the measurement result is more accurate.
Furthermore, the lower end of the first connector and the upper end of the second connector are respectively provided with a mounting hole for the upper end and the lower end of the temperature probe to extend into, the temperature probe can rotate relative to the first connector and relative to the second connector, the first connector and the second connector are respectively provided with a limit screw for axially limiting the upper end and the lower end of the temperature probe, a preset gap is reserved between the top of the limit screw and the temperature probe, the gap can enable the temperature probe to rotate for a certain angle along the shaft at the two ends of the temperature probe, and further the temperature probe can generate a certain self-adaptive effect on the inner wall of the measured target casing.
Furthermore, the inner cavity of the power shell is also provided with a balance piston, the balance piston is positioned below the power joint, the diameter of the upper end of the balance piston is larger and is matched with the inner cavity of the power shell, the diameter of the lower end of the balance piston is smaller, hydraulic oil is filled in the space surrounded by the balance piston, the power joint and the power shell, and the power shell is provided with a through hole at the position corresponding to the lower end of the balance piston, so that the balance piston is utilized to balance the internal pressure and the external pressure of the power shell, and the deformation of the power shell can be prevented.
Drawings
FIG. 1 is a schematic view of the overall structure of the push-type three-arm well temperature logging instrument of the present invention;
FIG. 2 is a schematic diagram of an electronic instrument short section;
FIG. 3 is a schematic view of a probe sub of the present invention;
FIG. 4 is a schematic view of a power sub of the present invention;
FIG. 5 is a schematic view of a temperature probe assembly of the present invention;
FIG. 6 is an enlarged view of portion A of FIG. 5;
fig. 7 is a schematic diagram of a temperature acquisition processing circuit (i.e., a control circuit) according to the present invention.
In the figure, 1-electronic instrument short section, 2-probe short section, 3-power short section, 4-protective cap, 5-upper joint, 6-electronic instrument shell, 7-single core sealing assembly, 8-power module, 9-circuit framework, 10-circuit board, 11-multi-core joint, 12-pressure bearing connector, 13-probe shell, 14-inner shaft, 15-positioning screw, 16-driven arm, 17-temperature probe assembly, 18-auxiliary arm, 19-driving arm, 20-sliding shaft, 21-spring shaft, 22-spring, 23-power shaft, 24-power joint, 25-pressure bearing connector, 26-power shell, 27-locking ring, 28-limiting sleeve, 29-lead screw, 30-screw sleeve shaft, 31-pin, 32-screw, 33-reducer, 34-motor, 35-balance piston, 36-guide plug, 37-first connection joint, 37-1-second connection, 38-limiting screw and 39-probe temperature.
Detailed Description
The invention is further described below with reference to the figures and examples.
Referring to fig. 1 and 3, the push-type three-arm temperature logging instrument comprises an electronic instrument short section 1, a probe short section 2 and a power short section 3; the probe nipple 2 comprises a probe outer shell 13, an inner shaft 14, a connecting rod mechanism, a sliding shaft 20 and an elastic element, the upper end of the probe outer shell 13 is connected with the lower end of the electronic instrument nipple 1, and the lower end of the probe outer shell 13 is connected with the upper end of the power nipple 3; the inner shaft 14, the sliding shaft 20 and the elastic element are sequentially arranged in the inner cavity of the probe shell 13 from top to bottom, the inner shaft 14 is fixedly connected between the probe shell 13, the sliding shaft 20 can freely slide in the inner cavity of the probe shell 13, and the lower end of the sliding shaft 20 is connected with the upper end of the elastic element; a plurality of link mechanisms are uniformly distributed along the circumferential direction of the probe shell 13, each link mechanism comprises a driven arm 16, a temperature probe assembly 17, an auxiliary arm 18 and a driving arm 19, the upper end of the driven arm 16 penetrates through the probe shell 13 and is hinged with the inner shaft 14, the lower end of the driven arm 16 is hinged with the upper end of the temperature probe assembly 17, the lower end of the temperature probe assembly 17 is hinged with the upper end of the driving arm 19, the lower end of the driving arm 19 penetrates through the probe shell 13 and is hinged with a sliding shaft 20, the upper end of the auxiliary arm 18 penetrates through the probe shell 13 and is hinged with the inner shaft 14, the lower end of the auxiliary arm 18 is hinged to a hinged shaft at the lower end of the temperature probe assembly 17 and is hinged with the upper end of the driving arm 19, and the probe shell 13 is provided with long holes for the driven arm 16, the auxiliary arm 18 and the driving arm 19 to fully move; a driving part is arranged in the power nipple 3, and the driving part can drive the elastic element to move up and down in the inner cavity of the probe shell 13; be equipped with control circuit in the electron appearance nipple joint 1, driver component and temperature probe assembly 17 all with control circuit connects, control circuit can control the driver component action and can receive and handle the data that temperature probe assembly 17 gathered.
Referring to fig. 3, the sliding shaft 20 is a hollow shaft, the sliding shaft 20 is sleeved on the lower end of the inner shaft 14, and the sliding shaft 20 is in clearance fit with the inner shaft 14 and the probe housing 13.
Referring to fig. 3, the elastic element includes a spring shaft 21 and a spring 22 sleeved on the spring shaft 21, the upper end of the spring shaft 21 is connected with the lower end of the sliding shaft 20, and the lower end of the spring 22 is connected with the driving component in the power sub 3.
Referring to fig. 3, as a preferred embodiment of the present invention, the hinge point of the inner shaft 14 and the driven arm 16, the hinge point of the driven arm 16 and the temperature probe assembly 17, the hinge point of the temperature probe assembly 17 and the auxiliary arm 18, and the hinge point of the auxiliary arm 18 and the inner shaft 14 are located at four vertices of the same parallelogram, respectively.
Referring to fig. 5 and 6, as a preferred embodiment of the present invention, the temperature probe assembly 17 includes a temperature probe 39, and a first connector 37 and a second connector 37-1 disposed at two ends of the temperature probe 39, a lower end of the driven arm 16 is hinged to an upper end of the first connector 37, a lower end of the auxiliary arm 18 and an upper end of the driving arm 19 are hinged to a lower end of the second connector 37-1, a lower end of the first connector 37 and an upper end of the second connector 37-1 are respectively provided with a mounting hole into which upper and lower ends of the temperature probe 39 extend, the temperature probe 39 can rotate relative to the first connector 37 and relative to the second connector 37-1, the first connector 37 and the second connector 37-1 are provided with a limit screw 38 for axially limiting the upper and lower ends of the temperature probe 39, and a predetermined gap is left between a top of the limit screw 38 and the temperature probe 39.
As a preferred embodiment of the present invention, referring to fig. 7, a control circuit in the electronic instrument pup joint 1 includes a DC-DC power supply module, a crystal oscillator, a single chip microcomputer, a communication module, an AD sampling chip and a reference voltage module, the crystal oscillator is connected to the single chip microcomputer, each temperature probe assembly 17 is correspondingly connected to one AD sampling chip, the AD sampling chip is connected to the single chip microcomputer, the reference voltage module is connected to the AD sampling chip, the communication module is connected to the single chip microcomputer in a communication manner, a driving component in the power pup joint 3 is connected to the communication module, and the DC-DC power supply module is respectively connected to the crystal oscillator, the single chip microcomputer, the communication module, the AD sampling chip and the reference voltage module.
As a preferred embodiment of the present invention, referring to fig. 2, an electronic instrument pup joint 1 includes a protective cap 4, an upper joint 5, an electronic instrument housing 6, a single-core sealing assembly 7, a power module 8, a circuit framework 9, a circuit board 10 and a multi-core joint 11, the protective cap 4 is connected with the upper end of the upper joint 5 through a thread, the single-core sealing assembly 7 is installed in an inner hole of the upper joint 5, the lower end of the upper joint 5 is connected with the upper end of the electronic instrument housing 6 through a thread, the circuit framework 9 is arranged in the inner cavity of the electronic instrument housing 6, the power module 8 is arranged at the upper end of the circuit framework 9, the circuit board 10 is fixedly installed at the lower end of the circuit framework 9, a control circuit is connected to the circuit board 10, the lower end of the circuit framework 9 is fixedly connected with the upper end of the multi-core joint 11, a plurality of pressure-bearing connectors 12 are installed in the multi-core joint 11, the upper end of the multi-core joint 11 is also connected with the lower end of the electronic instrument housing 6 through a thread, and the lower end of the multi-core joint 11 is connected with the upper end of the probe housing 13 through a thread.
As a preferred embodiment of the present invention, referring to fig. 4, the power sub 3 includes a power housing 26, a guiding plug 36 and a driving component disposed in an inner cavity of the power housing 26, the driving component includes a power shaft 23, a power joint 24, a lead screw 29, a threaded sleeve shaft 30, a speed reducer 33 and a motor 34, an upper end of the power joint 24 is in threaded connection with a lower end of the probe housing 13, a lower end of the power joint 24 is in threaded connection with an upper end of the power housing 26, and a lower end of the power joint 24 extends toward a lower portion of the power housing 26; the power shaft 23 penetrates through the power joint 24, a limiting structure is arranged between the power shafts 23 and used for enabling the power shaft 23 to move only along the axial direction of the power joint 24, and the upper end of the power shaft 23 is connected with the lower end of the elastic element; the power shaft 23 is of a hollow structure, and a pressure-bearing connector 25 is arranged in an inner hole of the power shaft 23; the lower end of the power shaft 23 is fixedly connected with a screw rod 29, a speed reducer 33 is in threaded connection with the lower end of the power joint 24, the output end of the speed reducer 33 is connected with a threaded sleeve shaft 30, the threaded sleeve shaft 30 is in matched connection with the screw rod 29, and the lower end of the speed reducer 33 is connected with a transmission shaft of a motor 34; the lower end of the power housing 26 is fixedly connected to the upper end of the guide plug 36.
As a preferred embodiment of the invention, referring to FIG. 4, the lower end of the power shaft 23 is fixedly connected with the upper end of the screw rod 29 through the limit sleeve 28 and the locking ring 27, the upper end of the screw rod 29 extends into the inner cavity of the limit sleeve 28, the upper end of the screw rod 29 is in a step shape, the locking rings 27 are arranged between the lower part of the screw rod 29 and the limit sleeve 28 and between the upper part of the screw rod 29 and the lower part of the power shaft 23, the cross section of the inner cavity at the lower end of the power joint 24 in threaded connection between the power shaft 23 and the limit sleeve 28 is in a regular hexagon shape, the cross section of the limit sleeve 28 is in a regular hexagon shape matched with the shape of the inner cavity at the lower end of the power joint 24, the cross section of the limit sleeve 28 is in a circular shape, and the diameter of the limit sleeve 28 is not larger than the diameter of the inscribed circle of the cross section of the inner cavity at the lower end of the power joint 24.
Referring to fig. 4, as a preferred embodiment of the present invention, a balance piston 35 is further disposed in an inner cavity of the power housing 26, the balance piston 35 is located below the power joint 24, an upper end of the balance piston 35 has a larger diameter and is matched with the inner cavity of the power housing 26, a lower end of the balance piston 35 has a smaller diameter, a space enclosed by the balance piston 35, the power joint 24 and the power housing 26 is filled with hydraulic oil, and a through hole is disposed in a portion of the power housing 26 corresponding to the lower end of the balance piston 35.
Examples
The push-type three-arm temperature logging instrument has the following structure:
as shown in fig. 1, the push-type three-arm temperature logging tool of this embodiment is connected from top to bottom in the following order: the electronic instrument short section 1 is connected with the probe short section 2 through threaded connection, and the power short section 3 is connected with the probe short section 2 through threaded connection.
As shown in fig. 2, a protective cap 4 of the electronic instrument short section 1 is connected with an upper joint 5 through threads, and a single-core sealing assembly 7 is installed in an inner hole of the upper joint 5; the lower end of the single-core sealing component 7 is connected into the circuit board 10 through a lead for supplying power, and the upper end is externally connected with a power supply through a logging cable; the upper connector 5 is connected with the electronic instrument housing 6 through a threaded connection. The upper end of the circuit framework 9 is provided with an internal control, and the power supply module 8 is arranged in the inner hole at the upper end of the circuit framework 9; the circuit board 10 is installed at the lower end of the circuit framework 9 through screws, and a control circuit is arranged on the circuit board 10 and comprises a temperature acquisition processing circuit and a motor driving control circuit. The power module 8, the circuit framework 9 and the circuit board 10 are all arranged in the inner cavity of the electronic instrument shell 6. The lower end of the line framework 9 is connected with a multi-core joint 11 through screws, and a plurality of pressure-bearing connectors 12 are installed in the multi-core joint 11 through threads. The pressure-bearing connector 12 is connected with the circuit board 10 through a lead, and is connected with the temperature probe assembly 17 and the pressure-bearing connector 25 through a lead, wherein 1 or 2 pressure-bearing connectors 12 are connected with the pressure-bearing connector 25 to be used as a motor 34 for power supply and conduction, and are connected with the temperature probe assembly 17 for signal transmission. The upper end of the multi-core joint 11 is in threaded connection with the electronic instrument shell 6, and the lower end of the multi-core joint is in threaded connection with the probe shell 13.
As shown in fig. 3, the inner shaft 14 in the probe sub 2 is mounted and positioned in the inner cavity of the probe shell 13 through a positioning screw 15. The inner shaft 14 is provided with a groove for mounting three sets of link mechanisms, and the included angle between every two sets of link mechanisms is 120 degrees. In each set of link mechanism, the upper end of a driven arm 16 is hinged with an inner shaft 14 through a pin, and the lower end of the driven arm 16 is hinged with the upper end of a temperature probe assembly 17 through a pin. The upper end of an auxiliary arm 18 is hinged with the inner shaft 4 through a pin, the lower end of the auxiliary arm 18 is hinged with the lower end of a temperature probe assembly 17 and the upper end of a driving arm 19 through a pin, and the hinged point of the auxiliary arm 18 and the inner shaft 4 is positioned below the hinged point of a driven arm 16 and the inner shaft 14. The lower end of the driving arm 19 is hinged with the sliding shaft 20 through a pin. The hinged connection points of the inner shaft 14 and the driven arm 16, the hinged connection points of the driven arm 16 and the temperature probe assembly 17, the hinged connection points of the temperature probe assembly 17 and the auxiliary arm 18 and the hinged connection points of the auxiliary arm 18 and the inner shaft 14 are respectively positioned on four vertexes of the same parallelogram, so that the parallel outward extension of the temperature probe assembly 17 to the outside of the instrument or the parallel recovery of the temperature probe assembly 17 to the inside of the instrument can be realized, and the parallel outward extension of the temperature probe assembly 17 to the outside of the instrument is further realized and the temperature probe assembly is attached to a sleeve. The lower end of the inner shaft 14 is provided with a shaft rod, the sliding shaft 20 is a hollow shaft and is sleeved on the shaft rod, and the sliding shaft 20 can do linear reciprocating motion along the shaft rod at the lower end of the inner shaft 14. The spring shaft 21 is connected with the sliding shaft 20 through threads, and the spring 22 is sleeved on the sliding shaft 20. The upper end of the spring 22 is connected to the lower end of the sliding shaft 20, and the lower end of the spring 22 is connected to the power shaft 23.
Referring to fig. 4, in the power nipple 3, the upper end of a power shaft 23 is connected with the lower end of a spring 22, and the shaft body of the power shaft 23 passes through the inner hole (i.e. inner cavity) of a power joint 24. The upper end of the power connector 24 is connected with the probe shell 13 through a thread, the lower end of the power connector 24 is connected with the power shell 26 through a thread, and the lower end of the power connector 24 is provided with an extension part extending towards the lower end of the power shell 26. The pressure bearing connector 25 is arranged in the inner hole of the power shaft 23 and is connected with the power shaft 23 through threads. The pressure-bearing connector 25 is connected with the pressure-bearing connector 12 through a lead wire and is connected into the circuit board 10 through the pressure-bearing connector 12, and is connected with the motor 34.
The lower end of the power shaft 23 is fixedly connected with the upper end of a screw rod 29 through a limiting sleeve 28 and a locking ring 27, the upper end of the screw rod 29 extends into the inner cavity of the limiting sleeve 28, the upper end of the screw rod 29 is in a step shape, the locking ring 27 is arranged between the lower part of the screw rod 29 and the limiting sleeve 28 and between the upper part of the screw rod 29 and the lower part of the power shaft 23, the cross section of the inner cavity at the lower end of a power joint 24 in threaded connection between the power shaft 23 and the limiting sleeve 28 is in a regular hexagon shape, the cross section of the limiting sleeve 28 is in a regular hexagon shape matched with the shape of the inner cavity at the lower end of the power joint 24, the cross section of the limiting sleeve 28 is in a circular shape, and the diameter of the limiting sleeve 28 is not larger than the diameter of the inscribed circle in the cross section of the inner cavity at the lower end of the power joint 24. The screw sleeve shaft 30 is connected with a transmission shaft of a speed reducer 33 through a pin 31, and the lower end of the speed reducer 33 is connected with a transmission shaft of a motor 34, so that the motor 34 can drive the screw sleeve shaft 30 to rotate. The reducer 33 is connected to the casing at the lowermost end of the power joint 24 by screws 32.
The balance piston 35 is arranged in the inner cavity of the power shell 26, the balance piston 35 is positioned below the extension part of the power joint 24, and the balance piston 35 can reciprocate in the power shell 26 along the axial direction. The diameter of the upper end of the balance piston 35 is large and is matched with the inner cavity of the power shell 26, the diameter of the lower end of the balance piston 35 is small, hydraulic oil is filled in the space enclosed by the balance piston 35, the power connector 24 and the power shell 26, and the power shell 26 is provided with a through hole at the position corresponding to the lower end of the balance piston 35 for balancing the internal pressure and the external pressure.
As shown in fig. 5 and 6, the temperature probe assembly 17 includes a temperature probe 39, and a first connector 37 and a second connector 37-1 disposed at two ends of the temperature probe 39, a lower end of the driven arm 16 is hinged to an upper end of the first connector 37, a lower end of the auxiliary arm 18 and an upper end of the driving arm 19 are hinged to a lower end of the second connector 37-1, a lower end of the first connector 37 and an upper end of the second connector 37-1 are respectively provided with a mounting hole into which the upper end and the lower end of the temperature probe 39 extend, the temperature probe 39 can rotate relative to the first connector 37 and relative to the second connector 37-1, that is, the mounting hole is a circular hole, two ends of the temperature probe 39 are cylindrical sections capable of extending into the mounting hole, two ends of the temperature probe 39 are both provided with grooves, the first connector 37 and the second connector 37-1 are provided with limit screws 38 for axially limiting the upper end and the lower end of the temperature probe 39, a top of the limit screws 38 extends into the grooves, a predetermined gap is left between the top of the limit screws 38 and the temperature probe 37-1, the temperature probe 37 can prevent the first connector 37-1 from rotating relative to ensure that the temperature probe 37 and the inner wall of the first connector 37-1 can adapt to a certain temperature probe 39, and ensure that the temperature probe 39 can adapt to the target probe 37-1.
When the push-type three-arm temperature logging instrument works, a motor driving control circuit of a control circuit in the electronic instrument short section 1 sends a command to a motor 34 in the power short section 3, and the motor 34 is driven to rotate. After the motor 34 is decelerated by the speed reducer 33, the spindle of the speed reducer 33 drives the screw sleeve shaft 30 to rotate. The screw rod 29 is driven by the rotation of the threaded sleeve shaft 30 and extends upwards, and the screw rod 29 drives the power shaft 23 to move upwards. The power shaft 23 compresses the spring 22 upward and pushes the spring shaft 21 and the slide shaft 20 upward. When the hinged joint of the lower end of the driving arm 19 and the sliding shaft 20 moves upwards, a link mechanism formed by the driven arm 16, the temperature probe assembly 17 and the auxiliary arm 18 is driven to move, and the temperature probe assembly 17 can be parallelly and externally detected to the outside of the whole logging instrument. After the temperature probe assembly 17 contacts the well wall, the temperature electrical signal measured by the temperature probe assembly is transmitted to a temperature acquisition processing circuit in a circuit board 10 in the electronic instrument short section 1.
As shown in fig. 7, the control circuit includes a crystal oscillator, a single chip, a communication module, an AD sampling chip 1, an AD sampling chip 2, an AD sampling chip 3, and a reference voltage module. And the DC-DC power supply module on the instrument provides power supply required by the work for the whole circuit system. The crystal oscillator is connected with the single chip microcomputer and provides a required clock signal for the single chip microcomputer, the AD sampling chip 1, the AD sampling chip 2 and the AD sampling chip 3 are respectively connected with the temperature probes 39 (the temperature probes 39 serve as temperature sensors) in the three temperature probe assemblies 17, and the reference voltage module provides reference voltage for the 3 AD sampling chips. Adopt the SPI bus to link to each other between 3 AD sampling chip and the singlechip, the singlechip controls 3 AD sampling chips respectively through the chip selection signal of difference. The communication module communicates with the singlechip through two lines, and the communication module can change the command on the TBS into the signal that the singlechip can discern, simultaneously, sends the data that the singlechip sent to the TBS bus on through the code. The temperature sensor can adopt PT100 or PT1000 platinum resistor, constant current source provided by AD sampling chip is utilized to flow through the temperature sensor, under different temperatures, the resistance value of the temperature sensor changes, because the current flowing through the temperature sensor is constant current source, the voltage at two ends of the temperature sensor changes along with the temperature change, the voltage value at two ends of the temperature sensor is input into the AD sampling chip to carry out data sampling, the sampled data is transmitted to the singlechip to carry out data processing through SPI bus, finally the data is transmitted to TBS bus through the communication module, so as to control the motor to rotate forwards or backwards to realize the pushing or recovering of the diameter measuring instrument.
The recovery of the temperature probe assembly 17 into the instrument can be realized by controlling the motor to rotate reversely. The pushing force can be determined by converting the inner diameter of the sleeve and the elastic force of the spring into the number of turns of the motor or the rotation time, so that the stable pushing and measurement of the instrument are realized.
The maximum external diameter of the three-set connecting rod mechanism of the push-leaning type three-arm temperature logging instrument after being dispersed is
The inner pipe (DN 38) and the annulus of the two-layer pipe string can be lowered for temperature test or measurement.
The electronic instrument nipple is arranged on the upper end of the caliper in the push-type three-arm temperature logging instrument, the probe nipple is controlled through the power nipple, and a signal returned by the probe nipple is received. The power short section provides power and control for the probe short section, is arranged at the lowest end of the instrument and is connected with the probe short section through threads and a sealing assembly. The probe nipple is positioned in the middle of the instrument, three temperature sensors can be attached to the sleeve through pushing action, continuous measurement is carried out, and the sensors can be retracted into the shell of the instrument after the measurement is finished. The push-type three-arm temperature logging instrument is provided with three temperature probes, so that temperature data in three directions can be obtained simultaneously, and the data coverage is good; the push-type three-arm temperature logging instrument can recover the probe when the probe does not work, so that the possibility of encountering resistance and jamming is reduced; the push-type three-arm temperature logging instrument can change the push state according to the inner diameters of different measuring tubes, so that the push force is consistent, and the contrast analysis of measured data is facilitated.
Claims (4)
1. A push-type three-arm temperature logging instrument is characterized by comprising an electronic instrument short section (1), a probe short section (2) and a power short section (3); the probe nipple (2) comprises a probe outer shell (13), an inner shaft (14), a connecting rod mechanism, a sliding shaft (20) and an elastic element, the upper end of the probe outer shell (13) is connected with the lower end of the electronic instrument nipple (1), and the lower end of the probe outer shell (13) is connected with the upper end of the power nipple (3); the inner shaft (14), the sliding shaft (20) and the elastic element are sequentially arranged in the inner cavity of the probe shell (13) from top to bottom, the inner shaft (14) is fixedly connected with the probe shell (13), the sliding shaft (20) can freely slide in the inner cavity of the probe shell (13), and the lower end of the sliding shaft (20) is connected with the upper end of the elastic element; a plurality of link mechanisms are uniformly distributed along the circumferential direction of the probe shell (13), each link mechanism comprises a driven arm (16), a temperature probe assembly (17), an auxiliary arm (18) and a driving arm (19), the upper end of each driven arm (16) penetrates through the probe shell (13) and is hinged with the inner shaft (14), the lower end of each driven arm (16) is hinged with the upper end of the temperature probe assembly (17), the lower end of each temperature probe assembly (17) is hinged with the upper end of the driving arm (19), the lower end of each driving arm (19) penetrates through the probe shell (13) and is hinged with the sliding shaft (20), the upper end of each auxiliary arm (18) penetrates through the probe shell (13) and is hinged with the inner shaft (14), the lower end of each auxiliary arm (18) is hinged to a hinged connecting shaft for hinging the lower end of the temperature probe assembly (17) and the upper end of the driving arm (19), and long holes for full movement of the driven arm (16), the auxiliary arms (18) and the driving arms (19) are formed in the probe shell (13); a driving part is arranged in the power nipple (3), and the driving part can drive the elastic element to move up and down in the inner cavity of the probe shell (13); a control circuit is arranged in the electronic instrument short section (1), the driving part and the temperature probe assembly (17) are both connected with the control circuit, and the control circuit can control the driving part to act and can receive and process data acquired by the temperature probe assembly (17);
the power nipple (3) comprises a power shell (26), a guide plug (36) and a driving component arranged in an inner cavity of the power shell (26), the driving component comprises a power shaft (23), a power joint (24), a screw rod (29), a threaded sleeve shaft (30), a speed reducer (33) and a motor (34), the upper end of the power joint (24) is in threaded connection with the lower end of the probe shell (13), the lower end of the power joint (24) is in threaded connection with the upper end of the power shell (26), and the lower end of the power joint (24) extends towards the lower part of the power shell (26); the power shaft (23) penetrates through the power joint (24), a limiting structure is arranged between the power shafts (23), the limiting structure is used for enabling the power shaft (23) to move only along the axial direction of the power joint (24), and the upper end of the power shaft (23) is connected with the lower end of the elastic element; the power shaft (23) is of a hollow structure, and a pressure-bearing connector (25) is arranged in an inner hole of the power shaft (23); the lower end of the power shaft (23) is fixedly connected with a screw rod (29), a speed reducer (33) is in threaded connection with the lower end of the power joint (24), the output end of the speed reducer (33) is connected with a threaded sleeve shaft (30), the threaded sleeve shaft (30) is in matched connection with the screw rod (29), and the lower end of the speed reducer (33) is connected with a transmission shaft of a motor (34); the lower end of the power shell (26) is fixedly connected with the upper end of the guide plug (36);
the sliding shaft (20) is a hollow shaft, the sliding shaft (20) is sleeved at the lower end of the inner shaft (14), and the sliding shaft (20) is in clearance fit with the inner shaft (14) and the probe shell (13);
the elastic element comprises a spring shaft (21) and a spring (22) sleeved on the spring shaft (21), the upper end of the spring shaft (21) is connected with the lower end of the sliding shaft (20), and the lower end of the spring (22) is connected with a driving part in the power nipple (3);
the hinged joint of the inner shaft (14) and the driven arm (16), the hinged joint of the driven arm (16) and the temperature probe assembly (17), the hinged joint of the temperature probe assembly (17) and the auxiliary arm (18) and the hinged joint of the auxiliary arm (18) and the inner shaft (14) are respectively positioned on four vertexes of the same parallelogram;
the temperature probe assembly (17) comprises a temperature probe (39), a first connector (37) and a second connector (37-1) which are arranged at two ends of the temperature probe (39), the lower end of a driven arm (16) is hinged with the upper end of the first connector (37), the lower end of an auxiliary arm (18) and the upper end of a driving arm (19) are hinged with the lower end of the second connector (37-1), the lower end of the first connector (37) and the upper end of the second connector (37-1) are respectively provided with an installation hole for the upper end and the lower end of the temperature probe (39) to extend into, the temperature probe (39) can rotate relative to the first connector (37) and relative to the second connector (37-1), the first connector (37) and the second connector (37-1) are provided with limiting screws (38) which respectively axially limit the upper end and the lower end of the temperature probe (39), and a preset gap is reserved between the top of the limiting screws (38) and the temperature probe (39);
the lower end of the power shaft (23) is fixedly connected with the upper end of a screw rod (29) through a limiting sleeve (28) and a locking ring (27), the upper end of the screw rod (29) extends into the inner cavity of the limiting sleeve (28), the upper end of the screw rod (29) is in a step shape, the locking ring (27) is arranged between the lower portion of the screw rod (29) and the limiting sleeve (28) and between the upper portion of the screw rod (29) and the lower portion of the power shaft (23), the power shaft (23) is in threaded connection with the limiting sleeve (28), the section of the inner cavity at the lower end of the power joint (24) is in a regular hexagon shape, the section of the limiting sleeve (28) is in a regular hexagon shape matched with the shape of the inner cavity at the lower end of the power joint (24), the section of the limiting sleeve (28) is in a circular shape, and the diameter of the limiting sleeve (28) is not larger than the inscribed circle diameter of the section of the inner cavity at the lower end of the power joint (24).
2. The push-type three-arm temperature logging instrument according to claim 1, wherein a control circuit in the electronic instrument short section (1) comprises a DC-DC power supply module, a crystal oscillator, a single chip microcomputer, a communication module, an AD sampling chip and a reference voltage module, the crystal oscillator is connected with the single chip microcomputer, each temperature probe assembly (17) is correspondingly connected with the AD sampling chip, the AD sampling chip is connected with the single chip microcomputer, the reference voltage module is connected with the AD sampling chip, the communication module is in communication connection with the single chip microcomputer, a driving part in the power short section (3) is connected with the communication module, and the DC-DC power supply module is respectively connected with the crystal oscillator, the single chip microcomputer, the communication module, the AD sampling chip and the reference voltage module.
3. The push-pull type three-arm temperature logging instrument according to claim 1, wherein the electronic instrument short joint (1) comprises a protective cap (4), an upper joint (5), an electronic instrument shell (6), a single-core sealing assembly (7), a power supply module (8), a line framework (9), a circuit board (10) and a multi-core joint (11), the protective cap (4) is connected with the upper end of the upper joint (5) through threads, the single-core sealing assembly (7) is installed in an inner hole of the upper joint (5), the lower end of the upper joint (5) is connected with the upper end of the electronic instrument shell (6) through threads, the line framework (9) is arranged in an inner cavity of the electronic instrument shell (6), the power supply module (8) is arranged at the upper end of the line framework (9), the circuit board (10) is fixedly installed at the lower end of the line framework (9), a control circuit is connected to the circuit board (10), the lower end of the line framework (9) is fixedly connected with the upper end of the multi-core joint (11), a plurality of pressure-bearing connectors (12) are installed in the joint (11), the upper end of the multi-core joint (11) is further connected with the upper end of the multi-core instrument shell (6) through threads, and the lower end of the multi-core joint (11) is connected with a probe (13).
4. The push-type three-arm temperature logging instrument according to claim 1, wherein a balance piston (35) is further arranged in an inner cavity of the power housing (26), the balance piston (35) is located below the power connector (24), the upper end of the balance piston (35) is large in diameter and matched with the inner cavity of the power housing (26), the lower end of the balance piston (35) is small in diameter, hydraulic oil is filled in a space surrounded by the balance piston (35), the power connector (24) and the power housing (26), and a through hole is formed in a position, corresponding to the lower end of the balance piston (35), of the power housing (26).
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