CN111982842A - Fluid analysis nipple for petroleum logging instrument - Google Patents
Fluid analysis nipple for petroleum logging instrument Download PDFInfo
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- CN111982842A CN111982842A CN202010779895.9A CN202010779895A CN111982842A CN 111982842 A CN111982842 A CN 111982842A CN 202010779895 A CN202010779895 A CN 202010779895A CN 111982842 A CN111982842 A CN 111982842A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
Abstract
The invention provides a fluid analysis nipple for an oil logging instrument, comprising: survey buret is provided with eccentric mounting groove in inside axial, is provided with a plurality of axial through-holes on the pipe wall of thick wall one side, installs respectively in eccentric mounting groove: enabling the underground fluid to form a circulating flowing human fluid pipeline inside the measuring pipe; a transmission device for irradiating the fluid in the fluid pipeline through a light source and analyzing the fluid; a fluorescent probe device for analyzing the reflected signal after irradiating the fluid in the fluid pipeline by a light source; an isolation joint for forming isolation inside and transmitting signals; and a heat insulating device for maintaining the temperature inside the measuring tube. The invention installs the equipment for simultaneously carrying out transmission analysis and refraction analysis on the fluid through the measuring tube with the eccentric mounting groove, so that the transmission and refraction spectrum analysis of the fluid can be simultaneously realized by one-time well descending, thereby reducing the measuring cost and simultaneously improving the measuring efficiency.
Description
Technical Field
The invention relates to the field of petroleum measurement, in particular to a fluid analysis nipple capable of simultaneously realizing transmission and refraction analysis on petroleum underground liquid.
Background
The spectral analysis instrument belongs to a kind of petroleum underground test instrument, and analyzes the component property and content of underground fluid by using light reaction generated when underground fluid is irradiated, so as to provide accurate analysis information for solving formation information.
At present, in the field of downhole spectral analysis, spectrometers can be divided into transmission spectrometers and refraction spectrometers in a working mode, the two types of spectrometers can only realize one test item, namely transmission analysis or refraction analysis, and two measurements are needed when two test items are completed, or two types of spectrometers are simultaneously lowered into the well for measurement.
The problem of not being able to focus two measurement methods on one spectrometer includes:
1. the existing installation structure can not realize the wiring of two different measurement modes, namely, a plurality of different pipelines can not be staggered on one installation cylinder, so that the effect of mutual noninterference is achieved;
2. for the underground environment, the temperature is high, the high-temperature adaptability of a general spectrometer is poor, and the preset measurement items cannot be fully carried out in the measurement time which is not influenced by the high temperature;
3. after the two measurement modes are installed in one cylinder, the problem of pressure isolation is difficult to treat, and the measurement chip is corroded after underground fluid permeates.
Disclosure of Invention
The invention aims to provide a fluid analysis nipple capable of simultaneously realizing transmission and refraction analysis on petroleum downhole liquid.
Specifically, the invention provides a fluid analysis sub for an oil logging instrument, comprising:
survey buret, be provided with eccentric mounting groove in inside axial, be provided with a plurality of axial through-holes on the pipe wall of thick wall one side, the through-hole includes pressure oil pipe way, returns oil pipe way, sample pipeline and cable pipeline respectively, installs respectively in eccentric mounting groove:
a fluid line which is a passage routed in the measurement pipe and communicates with the outside to circulate a downhole fluid inside the measurement pipe;
the transmission device comprises a transmission part and an analysis processing module, wherein the transmission part irradiates fluid in a fluid pipeline through a light source, then transmits irradiated signals to the analysis processing module through an optical fiber, and the analysis processing module analyzes received signals, obtains results and then sends the results to the aboveground receiving equipment;
the fluorescence probe device comprises a refraction part and a fluorescence processing module, wherein the refraction part irradiates fluid in a fluid pipeline through a light source, then transmits a reflected signal to the fluorescence processing module through an optical fiber, and the fluorescence processing module analyzes the received signal, obtains a result and then sends the result to the aboveground receiving equipment;
the isolation joint comprises a pressure-bearing base and a multi-core joint arranged in the pressure-bearing base and used for isolating the transmission part and the refraction part from the analysis processing module and the fluorescence processing module, and the multi-core joint receives optical fiber signals of the transmission part and the refraction part respectively and then transmits the optical fiber signals to the analysis processing module and the fluorescence processing module through optical fibers respectively;
and the heat preservation device comprises heat preservation materials and heat insulation materials which are arranged around the analysis processing module and the fluorescence processing module and used for maintaining the temperature inside the analysis processing module and the fluorescence processing module.
In an embodiment of the present invention, the transmission part includes a transmission seat inserted into an end of the eccentric mounting groove, the fluid pipeline passes through the transmission seat, a transmission spot lamp is installed at one side of the fluid pipeline in the transmission seat, a right-angle reflector for reflecting light at right angle and a signal output connector are installed at the other side of the fluid pipeline, sapphire glass for clamping the fluid pipeline is arranged between the transmission spot lamp and the reflector, the transmission spot lamp is connected with a cable in the through hole through a power supply line to obtain luminous power, and the signal output connector receives a reflected signal of the right-angle reflector and then transmits the signal to the isolation connector through an optical fiber.
In one embodiment of the invention, the transmission seat is provided with an installation opening at one side facing the side wall of the eccentric installation groove, a closed cover is fixed at the installation opening through a bolt, an axial through-wire opening is arranged at one side of the transmission seat facing the isolation joint, and an insertion hole for inserting the transmission spotlight is arranged at one side of the transmission seat opposite to the installation opening.
In one embodiment of the invention, a spotlight support for fixing the transmission spotlight, a fixing base for fixing the sapphire glass, and a sealing press ring for limiting the movement of the sealing ring and preventing the sapphire glass from moving are further arranged in the transmission seat.
In an embodiment of the present invention, the refraction portion is installed between the transmission portion and the isolation joint, and includes a refraction seat, a fluorescence refraction mirror and a sapphire refraction block are installed in the refraction seat, the fluid pipe is passed between the fluorescence refraction mirror and the sapphire refraction block, a refraction spot lamp for sending light passing through the fluid pipe to the fluorescence refraction mirror is installed on the sapphire refraction mirror in an inclined manner, and a receiving probe for receiving the refracted light, the other end of the receiving probe sends a received light signal to the isolation joint through an optical fiber, and the refraction spot lamp is connected with a cable in the through hole through a power supply line to obtain a light-emitting power supply.
In one embodiment of the invention, an insertion seat with an opening facing the direction of the isolation joint is arranged in the refraction seat, the fluorescence refractor is arranged at the bottom of the insertion seat, the sapphire refraction block is inserted in the insertion seat, and a locking ring for limiting the movement of the sapphire refraction block is arranged at the opening of the insertion seat in a threaded manner; the sapphire refraction block is provided with two inclined mounting holes which are inclined relatively and are symmetrically arranged, and the refraction spotlight and the receiving probe are respectively installed in the corresponding inclined mounting holes in a plug-in mounting mode.
In one embodiment of the present invention, the heat retaining device includes:
the cooling inner pipe is arranged at the analysis processing module and the fluorescence processing module in the eccentric mounting groove, and is fixed with the inner wall of the eccentric mounting groove in a sealing way through end heads at two ends, so that an annular sealed heat insulation cavity is formed between the outer pipe wall and the inner side wall of the eccentric mounting groove, and meanwhile, an air suction hole for vacuumizing the annular sealed heat insulation cavity is arranged on the measuring pipe;
the cooling material is installed inside the cooling inner tube and is right the analysis processing module and the fluorescence processing module are sealed to realize sealing, and the analysis processing module and the heat-conducting pouring sealant on the inner side wall of the cooling inner tube at the fluorescence processing module are adhered to, are respectively arranged on the analysis processing module and the fluorescence processing module, are away from the heat absorbent section at one end each other, and are arranged on the inner side wall of the cooling inner tube and are simultaneously in contact with the heat-conducting pouring sealant and the heat absorbent section.
In one embodiment of the invention, an air convection space is left between the heat-conducting pouring sealant and the analysis processing module and the fluorescence processing module; a hollow channel communicated with the air convection space is arranged at the axis of the heat absorbent section; and the two ends of the analysis processing module and the fluorescence processing module are respectively provided with a heat insulation section which is in contact with the heat absorbent section, the heat insulation section comprises an insulation heat insulation sleeve fixed on the inner side wall of the cooling inner pipe and a heat insulation sealing filler hermetically filled in the insulation heat insulation sleeve, and the insulation heat insulation sleeves at the two ends simultaneously clamp the graphene heat conduction film sleeve in the middle.
In an embodiment of the present invention, the tube wall of the eccentric mounting groove is provided with mounting notches and a movable cover for closing the corresponding mounting notches, respectively, at positions corresponding to the transmission portion, the refraction portion, the isolation joint, the analysis processing module and the fluorescence processing module, respectively, after all components inside each functional module are pre-mounted, the functional modules are fixed in the eccentric mounting groove through the corresponding mounting notches, and then connected with corresponding cables, and finally the movable cover is fixed on the corresponding mounting notches through bolts.
In one embodiment of the invention, the device further comprises an eccentric adapter connected with the measuring pipe, wherein the eccentric adapter is used for enabling the measuring pipe and a pipeline joint to be connected to be normally connected after the measuring pipe is connected with the pipeline joint; the eccentric adapter with survey the structure of buret connection one end with survey the structure of buret is the same, and the other end is the same with other pipeline structure of waiting to connect.
The invention installs the equipment for simultaneously carrying out transmission analysis and refraction analysis on the fluid through the measuring tube with the eccentric mounting groove, so that the transmission and refraction spectrum analysis of the fluid can be simultaneously realized by one-time well descending, thereby reducing the measuring cost and simultaneously improving the measuring efficiency. The isolation joint can prevent underground fluid from permeating into a chip space for accurate analysis, and the service life of the spectral analysis equipment is ensured and prolonged. The heat preservation device can keep the spectral analysis equipment in a low-temperature state for a long time, and further provides more accurate analysis data. Through the rational arrangement of the device, the purposes of simultaneously realizing multiple measurements are achieved, and meanwhile, the normal work of each measuring device is guaranteed, and through the arrangement of the through holes, a reasonable passing route is provided for the lines and the oil ways of each part per se, and after the connecting with other short sections is not influenced, the normal passing of an output line is realized.
Drawings
FIG. 1 is a schematic view of a spectrometer installation according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a measurement tube according to an embodiment of the present invention;
FIG. 3 is a schematic view of a structure of a transmission part according to an embodiment of the present invention;
FIG. 4 is a schematic view of a refraction portion according to an embodiment of the present invention;
FIG. 5 is a schematic view of an embodiment of the present invention showing the arrangement of the heat retaining means;
FIG. 6 is a schematic view of an eccentric mounting groove with a mounting notch according to an embodiment of the present invention.
Detailed Description
The detailed structure and operation of the present invention are described in detail with reference to the following embodiments and accompanying drawings.
As shown in fig. 1, in one embodiment of the invention, a petroleum downhole fluid measuring nipple is disclosed, which conventionally comprises a measuring pipe 1, and a fluid pipeline, a transmission device, a fluorescent probe device, an isolation joint 6 and a thermal insulation device 7 which are arranged in the measuring pipe.
As shown in FIG. 2, the measuring tube 1 is a hollow tube with the same diameter as the downhole drill rod, and is provided with a through eccentric mounting groove 11 in the internal axial direction, the eccentric mounting groove 11 is used for providing a mounting space for each component, the thinnest wall of the measuring tube 1 needs to meet the downhole pressure requirement, a plurality of mutually independent axial through holes 12 are arranged on the tube wall on one side of the thick wall, and the through holes 12 are used as a conveying channel for a line and an oil way of each component mounted in the measuring tube and are also used as a conveying channel for connecting other lines and oil ways when measuring short sections. The specific through holes can be respectively used as a pressure oil pipeline 121, an oil return pipeline 122, a sample pipeline 123 and a cable pipeline 124 according to the conveying type.
The fluid line 8 is used for circulating the fluid between the inside of the measuring tube 1 and the fluid in the well, and the specific flow path is set according to the position where each component is installed.
The transmission device analyzes the characteristics of the fluid by utilizing information generated after the fluid is directly irradiated by the light source, and comprises a transmission part 2 and an analysis processing module 3, wherein the transmission part 2 irradiates the fluid in the fluid pipeline 8 through the light source, then the irradiated signal is transmitted to the analysis processing module 3 through an optical fiber, the analysis processing module 3 directly analyzes the received signal and obtains a structure, and then the received signal is stored or sent to a receiving device on the well and is analyzed by the receiving device.
The fluorescence probe device analyzes the characteristics of fluid by utilizing reflection information generated after the fluid is irradiated by a light source, and comprises a refraction part 4 and a fluorescence processing module 5, wherein the refraction part 4 irradiates the fluid in a fluid pipeline 8 through the light source, then transmits the reflected signal to the fluorescence processing module 5 through an optical fiber, and the fluorescence processing module 5 analyzes the received signal and obtains a result, then stores or transmits the result to a receiving device on the ground, and the received signal is analyzed by the receiving device.
The isolation joint 6 comprises a pressure-bearing base 61 and a multi-core joint 62 installed in the pressure-bearing base 61, the isolation joint 62 is used for isolating the transmission part 2 and the refraction part 4 from the analysis processing module 3 and the fluorescence processing module 5, the multi-core joint 62 comprises a plurality of independent connecting columns, each connecting column respectively receives optical fiber signals of the transmission part 2 and the refraction part 4, and then respectively transmits the optical fiber signals to the analysis processing module 3 and the fluorescence processing module 5 through optical fibers. The isolation joint transmits the power at the analysis processing module and the fluorescence processing module to the transmission part and the refraction part through the power line through the power joint. Because transmission part 2 and refraction part 5 need interact with fluid pipeline 8, when appearing sealed untight, the fluid can permeate into surveying buret 1, because analysis processing module 3 and fluorescence processing module 5's chip is more accurate, in case the pollution then can influence the analysis result, and isolation joint 6 can be through pressure-bearing base 61 with transmission part 2, refraction part 4 and analysis processing module 3, fluorescence processing module 5 keeps apart completely, can maintain the pressure on inside both sides unchangeable under the pressure in the pit simultaneously, thereby guarantee analysis processing module 3 and fluorescence processing module 5's normal work.
The heat insulating device 7 is used for maintaining the temperature inside the analysis processing module 3 and the fluorescence processing module 5 so that they are not affected by the high temperature in the well, or extending the working time of them at the high temperature, and includes heat insulating materials and heat insulating materials disposed around the analysis processing module 3 and the fluorescence processing module 5.
In this embodiment, through a survey buret (nipple joint) 1 that has eccentric mounting groove 11, the equipment of carrying out transmission analysis and refraction analysis to the fluid simultaneously is installed, makes once go into the well and can realize fluidic transmission and refraction spectral analysis simultaneously, has reduced measurement cost promptly, has improved measurement of efficiency again on the same spot. The isolation joint can prevent underground fluid from permeating into a chip space for accurate analysis, and the service life of the spectral analysis equipment is ensured and prolonged. The heat preservation device can keep the spectral analysis equipment in a low-temperature state for a long time, and further provides more accurate analysis data. Through the rational arrangement of the device, the purposes of simultaneously realizing multiple measurements are achieved, and meanwhile, the normal work of each measuring device is guaranteed, and through the arrangement of the through holes, a reasonable passing route is provided for the lines and the oil ways of each part per se, and after the connecting with other short sections is not influenced, the normal passing of an output line is realized.
The transmission part 2 and the analysis processing module 3, and the refraction part 4 and the fluorescence processing module 5 used in the present embodiment operate in the same manner as in the prior art, and therefore, a spectrometer analysis apparatus having the same function as in the prior art can be referred to for a specific configuration. In the embodiment, the transmission collection and analysis and the refraction collection and analysis are independent from each other, so that not only the wiring is not interfered with each other, but also the independent chips are adopted during the analysis. The two are reasonably installed together, the signal acquisition area and the signal analysis area are mutually isolated, the transmission of corresponding signal lines and power supply lines is realized by the through holes 12, and the independent heat preservation device 7 is arranged in the analysis area, so that a more stable analysis environment can be provided.
The operation of the present embodiment will be described below with reference to fig. 1.
The transmission part 2 irradiates the fluid in the fluid pipeline 8 passing through the transmission part 2 by a light source, the light source passing through the fluid forms an optical signal after reflection, the optical signal is transmitted to a binding post of the isolation joint 6 by an optical fiber, and then the optical signal is transmitted to the analysis processing module 3 by the other end of the binding post through the optical fiber, and the analysis processing module 3 can obtain the components of the liquid and the gas in the fluid by analyzing the optical signal.
Meanwhile, the refraction part 4 irradiates the fluid in the fluid pipeline 8 passing through the refraction part 4 by using a light source, the irradiated light signal is transmitted to a binding post on the isolation joint 6 through an optical fiber, and then is transmitted to the fluorescence processing module 5 through the optical fiber from the other end of the binding post, and the fluorescence processing module 5 analyzes the light signal to obtain the types of oil products in the fluid, such as light oil and heavy oil.
The collection and analysis process can be continued during the measurement time to obtain multiple sets of data for easy cross-referencing.
The electric power for supplying light to the light source for lighting and the work of the analysis processing module 3 and the fluorescence processing module 5 is supplied after the cable pipeline 124 passing through the through hole 12 extends into the eccentric mounting groove 11. And the optical fiber for transmitting the optical signal is directly disposed in the eccentric mounting groove 11.
All parts can be fixed in an installation nipple joint in this embodiment, can realize simultaneously that pipeline and oil circuit that can rationally arrange the pipeline and the oil circuit that pass through eccentric settings's structure to fluidic composition and oils in the pit, and itself both can independent utility, can use with other measuring equipment cooperations simultaneously again, and can not influence pipeline and the oil circuit normal circulation between the jointing equipment.
As shown in fig. 3, in an embodiment of the present invention, a specific installation structure of the transmission part 2 is provided, the transmission part 2 includes a transmission seat 21 inserted into an end of the eccentric installation groove 11, the transmission seat 21 is opened with an installation opening 211 at a side facing a side wall of the eccentric installation groove 11, a closing cover 212 is fixed at the installation opening 211 by a bolt, and an axial line through opening 213 is provided at a side of the transmission seat 21 facing the isolation joint 6.
The fluid pipeline 8 horizontally passes through the transmission seat 21, a transmission spot lamp 22 is installed at one side of the fluid pipeline 8 in the transmission seat 21, a right-angle reflector 23 for reflecting light rays at right angles and a signal output connector 24 are installed at the other side of the fluid pipeline 8, a sapphire glass 25 which is connected with the fluid pipeline 8 and allows fluid to pass is arranged between the transmission spot lamp 22 and the reflector 23, and a fixed base 251 for fixing the sapphire glass 25 is arranged around the sapphire glass 24 and integrally forms a transmission block.
A spot lamp support 221 for fixing the transmission spot lamp 22 and a sealing press ring 222 for adjusting the distance between the transmission spot lamp 22 and the sapphire glass 25 are also arranged in the transmission seat 21, and an insertion hole 214 for inserting the transmission spot lamp 22 is arranged on one side of the transmission seat 21 opposite to the installation opening 211. The end of the transmission spotlight 22 remote from the sapphire glass 25 is connected to the cable in the cable duct 124 through the power supply line 26 to obtain the power for emitting light.
A gap is left between the closing cover 212 and the transmission base 21, the right-angle reflector 23 is installed on the light path of the transmission spot lamp 22 and forms an angle of 45 degrees with the light path, the signal output connector 24 is horizontally installed in the gap, one end of the signal output connector corresponds to the reflection light path of the right-angle reflector 23, and the other end of the signal output connector is connected with an optical fiber 27 which penetrates through the through hole and then is directly connected with the isolation connector 6.
When the device works, the power supply end of the transmission spotlight 22 is electrified, light is emitted towards one end of the sapphire glass 25, the emitted light is filtered by the lower sapphire glass 25 and then irradiated onto fluid flowing inside, the light penetrating through the fluid is filtered by the upper sapphire glass 25 and then irradiated onto the right-angle reflector 23, the right-angle reflector 23 reflects the vertically incident transmission light for 45 degrees and then irradiates to the signal receiving end of the signal output connector 24, the signal output connector 24 receives the light signal and then transmits the light signal to the isolation connector 6 through the other end of the optical fiber 27, the light signal is transmitted to the analysis processing module 3 through the isolation connector 6, and the analysis processing module 3 analyzes and stores the light signal through a preset degree under the control of the control chip. Since the analysis processing module 3 does not relate to the structural relationship, the calculation function is realized only by a chip, and the calculation function is not in the scope of the improvement of the present solution, so it is not described in detail here, and it can refer to the relevant content in the prior art.
The transmission seat 2 of the embodiment is a structure with three openings, and the three openings are convenient for installing and adjusting each part inside, meanwhile, the structure is convenient to process, and the maintenance and installation difficulty can be reduced.
As shown in fig. 4, in one embodiment of the present invention, a specific installation structure of the refraction portion 4 is provided, the refraction portion 4 is installed between the transmission portion 2 and the isolation fitting 6, and comprises a refraction seat 41, a mounting seat 42 with an opening 421 facing the isolation fitting 6 is arranged in the refraction seat 41, a fluorescence refraction mirror 43 and a sapphire refraction block 44 are arranged in the mounting seat 42, the fluorescence refraction mirror 43 is arranged at the bottom of the mounting seat 42, the sapphire refraction block 44 is inserted in one end of the opening 421 of the mounting seat 42, a locking ring 49 for limiting the movement of the sapphire refraction block 44 is screwed at the opening 421 of the mounting seat 42, and the fluid of the fluid pipeline 8 passes through between the fluorescence refraction mirror 43 and the sapphire refraction block 44.
Two inclined mounting holes which are opposite to each other at an angle of 30 degrees are formed in the sapphire refraction block 44, a refraction lamp 45 which transmits light passing through the fluid pipeline 8 in the direction of the fluorescence refractor 43 is obliquely mounted in one inclined mounting hole 441, a receiving probe 46 which receives the refracted light is mounted in the other inclined mounting hole 442, the other end of the receiving probe 46 transmits a received optical signal to the isolation joint 6 through an optical fiber 47, and the refraction lamp 45 is connected with a cable in the cable pipeline 124 through a power supply line 48 to obtain luminous power.
In this embodiment, the sapphire refraction block 44 is only disposed on one side of the fluid pipeline 8, when the refraction spotlight 45 is powered on to emit light, the light beam firstly passes through the sapphire refraction block 44 and then irradiates on the fluid, then passes through the fluid and irradiates on the fluorescence refraction mirror 43 located on the other side of the fluid, the fluorescence refraction mirror 43 reflects the incident light back to the fluid in a symmetrical angle mode, then passes through the fluid and enters the sapphire refraction block 44 to be received by the receiving probe 46, the receiving probe 46 receives the light signal, then the light signal is transmitted to the isolation joint 6 through the optical fiber 47 on the other end, and then is transmitted to the fluorescence processing module 5 through the isolation joint 6, and the fluorescence processing module 5 analyzes and stores the light signal to a predetermined degree under the control of the control chip. Similarly, since the fluorescence processing module 5 does not relate to the structure, it only uses a chip to implement the calculation function, and the calculation function is not in the scope of the improvement of the present embodiment, so it is not described in detail here, and it can refer to the related content in the prior art.
The integral structure of the refraction seat 41 adopts a tubular structure corresponding to the eccentric installation groove 11, two ends are open, the fluid pipeline 8 and the plug-in seat 42 installed inside can be adjusted through the two ends, the refraction spotlight 45 on the plug-in seat 42 and the receiving probe 46 are positioned on the same side, and the interval space can be adjusted through the inclination angle between the refraction spotlight 45 and the receiving probe 46. And the output of the optical fiber 47 and the input of the power supply line 48 of the two are directly opposite to the isolation joint 6, so that the connection can be facilitated, and the wiring mode can be simplified.
As shown in fig. 5, in one embodiment of the present invention, a specific arrangement structure of a heat retaining device 7 is disclosed, which includes: a cooling inner pipe 71 arranged at the analysis processing module 3 and the fluorescence processing module 5 in the eccentric mounting groove 11, the inner wall of the eccentric mounting groove 11 is sealed and fixed through the end heads at the two ends, so that an annular sealed heat insulation cavity 711 is formed between the outer pipe wall and the inner side wall of the eccentric mounting groove 11, meanwhile, the measuring pipe 1 is provided with an air exhaust hole 101 for vacuumizing the annular sealed heat insulation cavity 711, and the cooling material is arranged in the eccentric mounting groove 11, the cooling material realizes sealing and temperature keeping for the analysis processing module 3 and the fluorescence processing module 5, and comprises a heat-conducting pouring sealant 72 adhered to the inner side wall of the cooling inner tube 71 at the positions of the analysis processing module 3 and the fluorescence processing module 5, a heat absorbent section 73 arranged at one end, far away from the one end of the analysis processing module 3 and the fluorescence processing module 5, and a graphene heat-conducting film sleeve 74 arranged on the inner side wall of the cooling inner tube 71 and simultaneously contacted with the heat-conducting pouring sealant 72 and the heat absorbent section 73.
An air convection space 75 is reserved between the heat-conducting pouring sealant 72 and the analysis processing module 3 and the fluorescence processing module 5; a hollow channel 731 which is communicated with the air convection space 75 is arranged at the axis of the heat absorbent section 73, and the hollow channel 731 is simultaneously used as an input channel of the optical fibers 27 and 47; the two ends of the analysis processing module 3 and the fluorescence processing module 5 are respectively provided with a heat insulation section 76 contacting with the heat absorbent section 74, the heat insulation section 76 comprises an insulation heat insulation sleeve 761 fixed on the inner side wall of the cooling inner pipe 71 and a heat insulation sealing filler 762 hermetically filled in the insulation heat insulation sleeve 761, and the insulation heat insulation sleeves 761 at the two ends simultaneously clamp the graphene heat conduction film sleeves 74 in the middle.
As shown in fig. 6, in an embodiment of the present invention, on the pipe wall of the eccentric installation groove 11, the installation notches 13 and the movable covers 14 for closing the installation notches 13 are respectively provided at the positions corresponding to the transmission part 2, the refraction part 4, the isolation joint 6, the analysis processing module 3 and the fluorescence processing module 5, after all the components inside each functional module are installed in advance, the functional modules are respectively fixed in the eccentric installation groove 11 through the corresponding installation notches 13, then the corresponding cables are connected, and finally the movable covers 14 are respectively fixed on the corresponding installation notches 13 through bolts.
The heat preservation device 7 is used as an additional structure of the analysis processing module 3 and the fluorescence processing module 5, and is arranged along with the arrangement mode of the two. The whole outline of each connected part is cylindrical, a plurality of sealing grooves and sealing strips which are sealed with the inner surface of the eccentric mounting groove 11 are arranged on the outer surface, and each part can be reused and fixed at the mounting position by bolts after being inserted into the eccentric mounting groove 11.
If necessary, the installation notches 13 can be simultaneously opened on two sides of a relative position of a certain component, and the movable covers 14 and 141 are respectively arranged, so that the internal component can be installed or maintained from two directions.
Through the installation structure, each single component can be taken out through the corresponding installation notch, other components are not involved or influenced, and the installation or maintenance schedule is greatly improved.
The cooling process of the present embodiment is explained in detail below:
the annular sealed heat insulation cavity 711 between the cooling inner pipe 71 and the eccentric mounting groove 11 can insulate heat transmitted from the measuring pipe 1, and meanwhile, the low temperature inside is kept not to be conducted to the outside. The heat generated by the electronic components of the analysis processing module 3 and the fluorescence processing module 5 is directly dissipated into the air convection space 75, and is simultaneously transferred into the hollow channel 731 of the heat absorbent section 73, and then is absorbed by the heat absorbent section 73, and the heat conducting potting adhesive 72 can also absorb the heat in the hollow convection space 75 and transfer to the heat conductive section 73. The heat conducting agent section 73 is made of a phase change material, and can absorb heat and slow down the current temperature change within a certain time, so that the temperature of the air convection space 75 is kept in a low temperature state, and the analysis processing module 3 and the fluorescence processing module 5 can be in a preset temperature range during operation.
The graphene heat-conducting film sleeve 74 is attached to the inner side wall of the cooling inner tube 71, and then the heat-conducting pouring sealant 72 and the heat absorbent section 73 are encapsulated. The graphene heat-conducting film sleeve 74 has an excellent heat transfer function, can transfer heat absorbed by the heat-conducting pouring sealant 72 to the heat absorbent section 73 more quickly and completely, and is higher in efficiency and faster in cooling compared with a mode that the heat-conducting pouring sealant 72 is in contact heat transfer only through one end of the heat-conducting pouring sealant 72 and the heat absorbent section 73.
The heat insulation section 76 can completely seal the interior of the cooling inner pipe 71, not only can isolate the leakage of the internal low-temperature air, but also can prevent the external hydraulic oil from entering the cooling inner pipe 71 to affect the cooling material, and can isolate the heat conduction between the internal low-temperature air and the external hydraulic oil. The insulating and insulating cover 761 and the insulating and sealing filler 762 are made of flexible materials, which can improve the sealing effect. The insulating and heat insulating jacket 761 may be fixed to the cooling inner pipe 71 by bolts. The heat-insulating sealing filler 762 can be made of conventional foaming agents and foaming adhesives, and can realize sealing and isolation without influencing the passage of internal cables.
In one embodiment of the present invention, the two ends of the measuring pipe are further provided with eccentric adapters (not shown in the figure), and the eccentric adapters are used for connecting the measuring pipe 1 and the pipe joints to be connected normally; the structure of the end of the eccentric adapter connected with the measuring pipe 1 is the same as that of the measuring pipe 1, and the other end of the eccentric adapter is the same as that of other pipelines to be connected.
The outer dimension of the eccentric conversion head is the same as the dimensions of the measuring pipe 1 and the drill rod, and the structures at the two ends adopt different structures according to different connected objects, such as: the eccentric adapter is also provided with an eccentric channel with the same size and the same position at one end connected with the measuring pipe 1 and a channel corresponding to the number and the position of the through holes 12, while the other end is the same as the structure of other connected pipelines, and the inside is converted according to the structures at the two ends.
The two ends of the eccentric adapter are respectively connected with the measuring tube 1 and other pipelines through threads, and all channels of the ports can be mutually communicated through manual work or automation during connection. The eccentric adapter can be a plurality of according to the connecting tube setting of difference, according to the measuring instrument of measuring the connection at every turn and select the eccentric adapter that corresponds.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A fluid analysis sub for a petroleum logging instrument, comprising:
survey buret, be provided with eccentric mounting groove in inside axial, be provided with a plurality of axial through-holes on the pipe wall of thick wall one side, the through-hole includes pressure oil pipe way, returns oil pipe way, sample pipeline and cable pipeline respectively, installs respectively in eccentric mounting groove:
a fluid line which is a passage routed in the measurement pipe and communicates with the outside to circulate a downhole fluid inside the measurement pipe;
the transmission device comprises a transmission part and an analysis processing module, wherein the transmission part irradiates fluid in a fluid pipeline through a light source, then transmits irradiated signals to the analysis processing module through an optical fiber, and the analysis processing module analyzes received signals, obtains results and then sends the results to the aboveground receiving equipment;
the fluorescence probe device comprises a refraction part and a fluorescence processing module, wherein the refraction part irradiates fluid in a fluid pipeline through a light source, then transmits a reflected signal to the fluorescence processing module through an optical fiber, and the fluorescence processing module analyzes the received signal, obtains a result and then sends the result to the aboveground receiving equipment;
the isolation joint comprises a pressure-bearing base and a multi-core joint arranged in the pressure-bearing base and is used for isolating the transmission part and the refraction part from the analysis processing module and the fluorescence processing module, the multi-core joint receives optical fiber signals of the transmission part and the refraction part respectively and then transmits the optical fiber signals to the analysis processing module and the fluorescence processing module respectively through optical fibers, and meanwhile, a power supply is transmitted;
and the heat preservation device comprises heat preservation materials and heat insulation materials which are arranged around the analysis processing module and the fluorescence processing module and used for maintaining the temperature inside the analysis processing module and the fluorescence processing module.
2. The fluid analysis sub of claim 1,
the transmission part comprises a transmission seat inserted at the end part of the eccentric mounting groove, the fluid pipeline penetrates through the transmission seat, a transmission spotlight is installed at one side of the fluid pipeline in the transmission seat, a right-angle reflector for reflecting light at right angle and a signal output connector are installed at the other side of the fluid pipeline, sapphire glass for clamping the fluid pipeline is arranged between the transmission spotlight and the reflector, the transmission spotlight is connected with a cable in the through hole through a power supply line to obtain luminous electric power, and the signal output connector receives the reflected signal of the right-angle reflector and then transmits the signal to the isolation connector through an optical fiber.
3. The fluid analysis sub of claim 2,
the transmission seat is provided with an installation opening at one side facing the side wall of the eccentric installation groove, a closed cover is fixed at the installation opening through a bolt, an axial through-line opening is formed at one side of the transmission seat facing the isolation joint, and an insertion hole for inserting the transmission spotlight is formed at one side of the transmission seat opposite to the installation opening.
4. The fluid analysis sub of claim 3,
still install fixedly in the transmission seat the shot-light support of transmission shot-light is fixed sapphire glass's fixed baseplate to and restriction sealing washer removes and prevents sapphire glass drunkenness's sealed clamping ring.
5. The fluid analysis sub of claim 1,
the refraction portion is installed transmission portion with keep apart between the joint, including the refraction seat, install fluorescence refractor and sapphire refraction piece in the refraction seat, pass between fluid pipe route fluorescence refractor and the sapphire refraction piece, tilt up installation on the sapphire refractor and send to fluorescence refractor direction and pass the refraction shot-light of fluid pipe way light, and the receiving probe who receives refraction back light, receiving probe's the other end pass through optic fibre with received optical signal send to keep apart joint department, the refraction shot-light pass through the power supply line with cable in the through-hole is connected in order to acquire luminous power.
6. The fluid analysis sub of claim 5,
an insertion seat with an opening facing the direction of the isolation joint is arranged in the refraction seat, the fluorescence refractor is installed at the bottom of the insertion seat, the sapphire refraction block is inserted in the insertion seat, and a lock ring for limiting the movement of the sapphire refraction block is installed at the opening of the insertion seat in a threaded manner; the sapphire refraction block is provided with two inclined mounting holes which are inclined relatively and are symmetrically arranged, and the refraction spotlight and the receiving probe are respectively installed in the corresponding inclined mounting holes in a plug-in mounting mode.
7. The fluid analysis sub of claim 1,
the heat preservation device includes:
the cooling inner pipe is arranged at the analysis processing module and the fluorescence processing module in the eccentric mounting groove, and is fixed with the inner wall of the eccentric mounting groove in a sealing way through end heads at two ends, so that an annular sealed heat insulation cavity is formed between the outer pipe wall and the inner side wall of the eccentric mounting groove, and meanwhile, an air suction hole for vacuumizing the annular sealed heat insulation cavity is arranged on the measuring pipe;
the cooling material is installed inside the cooling inner tube and is right the analysis processing module and the fluorescence processing module are sealed to realize sealing, and the analysis processing module and the heat-conducting pouring sealant on the inner side wall of the cooling inner tube at the fluorescence processing module are adhered to, are respectively arranged on the analysis processing module and the fluorescence processing module, are away from the heat absorbent section at one end each other, and are arranged on the inner side wall of the cooling inner tube and are simultaneously in contact with the heat-conducting pouring sealant and the heat absorbent section.
8. The fluid analysis sub of claim 7,
an air convection space is reserved between the heat-conducting pouring sealant and the analysis processing module and between the heat-conducting pouring sealant and the fluorescence processing module; a hollow channel communicated with the air convection space is arranged at the axis of the heat absorbent section; and the two ends of the analysis processing module and the fluorescence processing module are respectively provided with a heat insulation section which is in contact with the heat absorbent section, the heat insulation section comprises an insulation heat insulation sleeve fixed on the inner side wall of the cooling inner pipe and a heat insulation sealing filler hermetically filled in the insulation heat insulation sleeve, and the insulation heat insulation sleeves at the two ends simultaneously clamp the graphene heat conduction film sleeve in the middle.
9. The fluid analysis sub of claim 1,
on the pipe wall of eccentric mounting groove, relatively transmission portion, refraction portion, isolation joint, analysis processing module and fluorescence processing module department are provided with the installation notch respectively to and seal the movable cover of corresponding installation notch, after each functional module installs inside all parts in advance, the rethread is fixed respectively by the installation notch that corresponds in the eccentric mounting groove, then connects corresponding cable, fixes the movable cover respectively on the installation notch that corresponds through the bolt at last.
10. The fluid analysis sub of claim 1,
the eccentric adapter is used for enabling pipelines of the measuring pipe and the pipeline to be connected to be normally connected after the measuring pipe is connected with the pipeline joint to be connected; the eccentric adapter with survey the structure of buret connection one end with survey the structure of buret is the same, and the other end is the same with other pipeline structure of waiting to connect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010779895.9A CN111982842A (en) | 2020-08-05 | 2020-08-05 | Fluid analysis nipple for petroleum logging instrument |
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| Application Number | Priority Date | Filing Date | Title |
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