CN107083955A - A kind of digital underground heat logging system of HTHP - Google Patents
A kind of digital underground heat logging system of HTHP Download PDFInfo
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- CN107083955A CN107083955A CN201710265056.3A CN201710265056A CN107083955A CN 107083955 A CN107083955 A CN 107083955A CN 201710265056 A CN201710265056 A CN 201710265056A CN 107083955 A CN107083955 A CN 107083955A
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- 238000009413 insulation Methods 0.000 claims abstract description 58
- 238000005259 measurement Methods 0.000 claims abstract description 51
- 239000013078 crystal Substances 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims description 90
- 239000006096 absorbing agent Substances 0.000 claims description 28
- 239000012212 insulator Substances 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 19
- 239000000725 suspension Substances 0.000 claims description 16
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 13
- 229910052744 lithium Inorganic materials 0.000 claims description 13
- 230000007704 transition Effects 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 230000005622 photoelectricity Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 abstract description 10
- 230000008859 change Effects 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000005553 drilling Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 7
- 230000005251 gamma ray Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
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- 229910000831 Steel Inorganic materials 0.000 description 4
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- 230000008901 benefit Effects 0.000 description 3
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- 238000010438 heat treatment Methods 0.000 description 3
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- 230000003139 buffering effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
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- 230000005856 abnormality Effects 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Measuring Fluid Pressure (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The present invention relates to a kind of digital underground heat logging system of HTHP, it is characterised in that：Including the pressure-bearing outer tube being coaxially disposed and insulation inner tube, one end of pressure-bearing outer tube is completely enclosed by instrument lower contact, the other end of pressure-bearing outer tube is closed by instrument top connection, it is incubated one end closing of inner tube, the other end is closed by instrument top connection and temperature sensor joint, measurement assembly is provided with insulation inner tube, measurement assembly includes temperature sensor, pressure sensor and NaI crystal, photomultiplier.In the present invention, temperature logging, pressure detection well and gamma rays well logging can be carried out simultaneously, is conducive to more comprehensively measuring parameters, and pressure-bearing outer tube, insulation inner tube form an independent seal cavity respectively；The inside and outside heat insulation pressure of insulation inner tube is smoothly realized, reliable operating temperature interval reaches 10 DEG C -+250 DEG C, and pressure-bearing reaches 55MPa, smoothly realizes the well logging under high temperature, high pressure operating mode.
Description
Technical field
The present invention relates to a kind of logging instrument, more particularly to a kind of high-temperature digital geothermal logging system.
Background technology
Geophysical log or field geophysics are also in well logging, belong to applied geophysics method（Including weight, magnetic, electricity,
Shake, core）One of, it is to be surveyed using geophysical properties such as the electrochemical properties of rock stratum, conductive characteristic, acoustic characteristic, radioactivity
The method for measuring geophysical parameterses.
The method of well logging is surveyed by many kinds, such as temperature logging, gamma ray log, neutron well logging, acoustic amplitude logging, hole deviation
Well, strata pressure well logging etc..During well logging, by the various logging instruments manufactured using physical principles such as electricity, magnetic, sound, heat, cores
Device, by logging cable G.I.H, makes ground electrical measuring instrument continuously to record the various parameters with change in depth along pit shaft, passes through
The curve of this kind of parameter is represented, the indirect physical characteristic for recognizing subterranean strata is carried out with reference to the physical parameter of subterranean strata.
The important method technology logged well as exploration and development oil gas field, it is in oil-gas exploration, exploitation and the full mistake produced
Huge effect is played in journey.But with scientific and technological progress and the development of logging Application, logging technique and equipment are also required to constantly
Development.
For example, recently as Development of Geothermal Resources, drinking water sources exploitation, and all kinds of shaft building requirement of engineering, it is conventional
The logging method such as well temperature, pressure and well temperature gradient become increasingly by people to be paid attention to.
But, temperature logging tool, the pressure detection well instrument being currently known are stated geothermal energy resources, drinking water sources in application first and opened
During hair, due to the limitation of its structure design, temperature logging tool temperature working range is between -5-210 DEG C, the pressure of pressure detection well instrument
Working range then between 0-40MPa, in this field in use, easily occur can not normal work, error of measured data is big etc. to ask
Topic, can not meet the requirement of well logging.Therefore, a kind of digital underground heat logging system gesture of new HTHP is developed must
OK.
The content of the invention
The number of well logging can be smoothly realized under high temperature and high pressure environment the technical problem to be solved in the present invention is to provide a kind of
Word geothermal logging system.
In order to solve the above technical problems, the technical scheme is that：A kind of digital underground heat logging system of HTHP, its
Innovative point is：Including
One pressure-bearing outer tube, the pressure-bearing outer tube is the pipe structure that a cross section is annulus, limit pressure-bearing outer tube along its own
One end on body axis bearing of trend is first end, the other end be on the second end, the first end inwall of the pressure-bearing outer tube from
First end is sequentially provided with sealing to the second end and coordinates section and internal thread segment, and the sealing of pressure-bearing outer tube coordinates section internal diameter to be designated as R1, held
The big footpath of internal thread segment of pressure outer tube is designated as R2, and R1 ＞ R2, the second end of the pressure-bearing outer tube has stepped hole in an afterbody；
The one instrument lower contact for being closed to the end of pressure-bearing outer tube second, the instrument lower contact just can be embedding with one
Enter in the annular boss of stepped hole in afterbody, the afterbody of the annular boss insertion pressure-bearing outer tube and welded after stepped hole with pressure-bearing outer tube
Connect the fixed closing for realizing the end of pressure-bearing outer tube second；
The one coaxial insulation inner tube being built in pressure-bearing outer tube, the insulation inner tube is the pipe structure that a cross section is annulus,
Insulation inner tube is limited along one end on its own body axis bearing of trend as the 3rd end, the other end is the 4 of end-enclosed
End；It is described insulation inner tube the 3rd end close to pressure-bearing outer tube first end, and positioned at pressure-bearing outer tube internal thread segment at, the guarantor
4th end of warm inner tube is close to the second end of pressure-bearing outer tube, and the 4th end end face props up the annular boss end face reality of instrument lower contact
Now the 4th end of insulation inner tube is spacing；
One is used to be incubated the clamp nut that inner tube is positioned, and the clamp nut, which has one, to be coordinated with pressure-bearing outer tube internal thread segment
External thread section, there is a diameter to be more than the circular hole of insulation inner tube diameter the center of clamp nut, and at the end of clamp nut
The connecting hole of insertion is provided with face；The clamp nut is threadedly coupled by internal and external screw thread section with pressure-bearing outer tube and props up insulation
3rd end end face of inner tube realizes that the 3rd end of insulation inner tube is spacing；
One instrument top connection, the instrument top connection is a step-like rotary structure set with pressure-bearing outer coaxial tube, is limited
Instrument top connection is being the 5th end along one end on its own body axis bearing of trend, and the other end is the 6th end；Step-like time
The outer surface of swivel structure along along own axes direction, is setting gradually the first cylindrical shell of column from the 5th end to the 6th end, led outside
To conical section, dismounting cylindrical section, the first sealing cylinder section, First Transition cylindrical section, the first locking cylindrical section, the second sealing cylinder
Section and insulator connecting cylinder section；On the outer ring of the first sealing cylinder section several edge is evenly distributed with along own axes direction
First seal groove of outer ring circumferencial direction extension, the first locking cylindrical section outer ring is provided with and can coordinated with pressure-bearing outer tube internal thread segment
External thread section, be evenly distributed with several along own axes direction and prolong along outer ring circumferencial direction on the outer ring of the second sealing cylinder section
Muff connecting hole is drilled with the second seal groove stretched, the outer ring of the insulator connecting cylinder section；The dismounting cylindrical section
External diameter is designated as R3, and the external diameter of the first sealing cylinder section is designated as R4, and the external diameter of transition cylindrical section is designated as R5, the first locking cylindrical section
The big footpath of external thread section is designated as R6, and the external diameter of the second sealing cylinder section is designated as R7, and the external diameter of insulator connecting cylinder section is designated as R8, R3
＞ R4 ＞ R6 ＞ R5 ＞ R7 ＞ R8, and the first sealing cylinder section external diameter R4 and pressure-bearing outer tube sealing coordinate section R1 to match, the
Two sealing cylinders section external diameter R7 matches with being incubated the internal diameter of inner tube；Between dismounting cylindrical section and the first sealing cylinder section
Step surface props up the first end end face of pressure-bearing outer tube, and the sealing that the first sealing cylinder section is embedded just below pressure-bearing outer tube coordinates in section,
And coordinate the toroidal cavity formed between section to be embedded in the first sealing ring in the first seal groove of the first sealing cylinder section and sealing
Group；The internal thread segment of first locking cylindrical section and pressure-bearing outer tube, which is locked, realizes that instrument top connection and the connection of pressure-bearing outer tube are consolidated
It is fixed；Second sealing cylinder section, which is passed through, to be embedded just below after the center hole of clamp nut in the 3rd end inwall of insulation inner tube, and
The toroidal cavity formed between the second seal groove and insulation inner tube wall of second sealing cylinder section is embedded in the second sealing ring group；
Insulator connecting cylinder section is outer to be set with muff, and the muff passes through the screw that is threadedly coupled with muff connecting hole
It is fixed in insulator connecting cylinder section；The center of step-like rotary structure along along own axes direction, from the 5th end to
6th end sets gradually sealing and coordinates circular hole portion, locking circular hole portion, First Transition circular hole portion, taper hole section and the second transition circular hole
Internal thread is provided with section, locking circular hole portion；
One sensor connector, the sensor connector along its own axis direction be divided into suspension ring connecting portion, measurement portion and on connect
Head connecting portion, suspension ring connecting portion is connected by screw thread with a suspension ring, and measurement portion has one along sensor connector itself radial direction
Extend and temperature sensor installation cavity and pressure biography are provided with the measurement chamber of simultaneously insertion sensor connector side wall, top connection connecting portion
Sensor installation cavity, the temperature sensor installation cavity, one end of pressure sensor installation cavity are connected with measurement chamber, and the other end runs through
The axial end of top connection connecting portion；
The outer surface of the top connection connecting portion is similarly step-like revolving body, top connection connecting portion along its own axis direction from
Joint connection side is disposed with the second cylindrical shell of column, the 3rd sealing cylinder section, the second locking circle to suspension ring connecting portion on the side
Several is evenly distributed with shell of column, the outer ring of the 3rd sealing cylinder section along own axes direction along outer ring circumferencial direction to extend
The 3rd seal groove, the second locking cylindrical section outer ring is provided with can lock the outer spiral shell of circular hole portion screw-internal thread fit with instrument top connection
Line section, the external diameter of the second cylindrical shell of column is denoted as R9, and the external diameter of the 3rd sealing cylinder section is denoted as R10, the second locking cylindrical section
The big footpath of external thread section be denoted as R11, R9 ＞ R10 ＞ R11, the step surface between the second cylindrical shell of column and the 3rd sealing cylinder section is supported
Firmly the 5th end end face of instrument top connection, the sealing that the 3rd sealing cylinder section is embedded just below instrument top connection coordinates in circular hole portion,
And between the 3rd seal groove of the 3rd sealing cylinder section and sealing coordinate circular hole portion the toroidal cavity that is formed to be embedded in the 3rd close
Seal group, the external thread section of the second locking cylindrical section and the locking circular hole portion screw thread of instrument top connection are locked and realized on instrument
The locking of joint and sensor connector；
One measurement assembly, the measurement assembly mainly includes the NaI crystal, photomultiplier, main line being arranged in insulation inner tube
Road plate, power panel, WIFI module, lithium battery, and temperature sensor, pressure sensor in sensor connector；Institute
NaI crystal, photomultiplier, main circuit board, power panel, WIFI module, lithium battery are stated on the axis of insulation inner tube from the 4th
Hold to the 3rd end and be arranged in order, microprocessing unit, discriminator, amplifier and D/A converter module are installed on main circuit board；Institute
Photomultiplier is stated with a photocathode, an anode and multiplier stage, photocathode is close to be arranged on NaI crystal side, times
Increase level to be powered by power panel by lithium battery, anode passes sequentially through amplifier, discriminator and exports pulsed current signal to micro- place
Manage unit；The WIFI module accesses microprocessing unit by wiring, main circuit board, and WIFI module includes antenna pedestal, antenna and sent out
Penetrate plate, power switch, charging socket；The temperature sensor is sealingly mounted at the temperature sensor installation cavity of sensor connector
Interior, measurement chamber is stretched on the head of temperature sensor, and the afterbody of temperature sensor passes through the digital-to-analogue conversion in wiring and main circuit board
Module is connected；The pressure sensor is sealingly mounted in the pressure sensor installation cavity of sensor connector, pressure sensor
Measurement chamber is stretched on head, and the afterbody of pressure sensor is connected by wiring with the D/A converter module on main circuit board.
It is preferred that, the measurement assembly also includes absorber in first, absorber, upper absorber, lower absorber in second,
Absorber on being provided between insulator and lithium battery, is provided with heat absorption in first between WIFI module and main circuit board
Body, is provided with absorber in second between main circuit board and power panel, is set between the 4th end of NaI crystal and insulation inner tube
It is equipped with lower absorber.
It is preferred that, the NaI crystal, photomultiplier are successively set in an inner sleeve, and one end of inner sleeve leads to
Cross righting joint to be connected with lower absorber, the other end of inner sleeve is connected by another joint with power panel；Photomultiplier transit
One end away from NaI crystal in pipe is provided with photomultiplier transit base, has a spring positioning sleeve on the photomultiplier transit base,
Anti-chatter spring is set with spring positioning sleeve, the other end of anti-chatter spring props up inner sleeve tube end.
It is preferred that, antidetonation sponge and rubber blanket are set between the righting joint and inner sleeve.
It is preferred that, the suspension ring connecting portion outer surface of the sensor connector is drilled with sensor connector removal hole.
It is preferred that, the dismounting cylindrical section outer surface of the instrument top connection is drilled with top connection removal hole.
The advantage of the invention is that：
（1）In the present invention, using the exposed small time constant PT1000 RTDs in sensor connector as temperature sensor,
The change of temperature in energy quick response drilling, its temperature signal realizes temperature through the laggard microprocessing unit measurement processing of digital-to-analogue conversion
Degree well logging；Using the high-temp pressure sensor for being built-in with temperature sensor, microprocessing unit is believed by the output of pressure sensor
Number, the output signal of built-in temperature sensor and secondary calibration equation, be modified calculating, finally give actual pressure value, it is real
Existing high-precision pressure well logging；
By NaI crystal and photomultiplier constitute on GR detector, each dynode of photomultiplier added with it is incremental just
Voltage, gamma rays excites lower NaI crystal to release photon, and these photons are beaten can release it on the photocathode of photomultiplier
Photoelectron, photoelectron constantly accelerates propagation under each dynode effect of photomultiplier, finally in the anode of photomultiplier
The sufficiently large pulse current of formation amplitude, then pulse current is selected by preamplifier progress Current amplifier, discriminator,
It is output to microprocessing unit（MCU）Counting processing is carried out, so as to realize gamma ray detection；
Whole logging system is logged well while carrying out temperature logging, pressure detection well and gamma rays, is conducive to more complete
The measurement parameters in face, comprehensive assessment geological conditions, meanwhile, number of times of going into the well can be reduced again, improve operating efficiency；
（2）Constructed using integrated single-cylinder so that temperature sensor, pressure sensor, NaI crystal, photomultiplier etc. are respectively surveyed
Metering device is located in same cylinder, and by the balanced decentralized design of heating power consumption, meanwhile, the measurement group in insulation inner tube
Part also includes multiple absorbers being distributed between each measurement device, and absorber being capable of absorptiometry component work within a certain period of time
The heat produced during work；So, to allow heating power consumption to be absorbed by distributed equalization formula, it is ensured that Temperature Distribution is consistent in pipe
Property, advantage of this is that improving the operating efficiency of absorber thermal capacitance, cause instrument reliable to prevent local temperature too high
Property reduction, to provide advantage suitable for the geothermal logging under high-temperature and high-pressure conditions；
（3）In the present invention, insulation inner tube is coordinated by clamp nut and instrument lower contact to be fixed in pressure-bearing outer tube, is incubated inner tube
Upper end（That is the 3rd end）Coordinated by instrument top connection and pressure-bearing outer tube and realize sealing, and by being used in instrument top connection
Multi-step rotary structure, using the multiple-sealed groove group, sealing ring set thereon respectively with pressure-bearing outer tube, insulation in the seal of tube
Coordinate, meanwhile, the lower end of pressure-bearing outer tube（That is the second end）And the lower end of insulation inner tube（That is the 4th end）It is closing, this just makes
Obtain pressure-bearing outer tube, insulation inner tube and form an independent seal cavity respectively；And then the measurement device being incubated in inner tube is closed
In two housings, duplicate protection is realized, the inside and outside heat insulation pressure of insulation inner tube is smoothly realized, it is ensured that logging system can be
Normal work under high temperature and high pressure environment, reliable operating temperature interval reaches -10 DEG C -+250 DEG C, and pressure-bearing reaches 55 MPa, suitable
Profit realizes the well logging under high temperature, high pressure operating mode.
（4）NaI crystal, photomultiplier are set in an inner sleeve, and filled with anti-chatter spring, antidetonation sponge etc.
Buffering device, it is to avoid logger runs into fierce hit during going into the well influences its normal work, further lifting means work
Make reliability.
Brief description of the drawings
Fig. 1 is the digital underground heat logging system structural representation of HTHP of the present invention.
Fig. 2 is pressure-bearing outer tube structure schematic diagram of the present invention.
Fig. 3 is partial enlarged drawing A in Fig. 2.
Fig. 4 is partial enlarged drawing B in Fig. 2.
Fig. 5 is Instrumental lower contact structural representation of the present invention.
Fig. 6 is Instrumental top connection structural representation of the present invention.
Fig. 7 is sensor connector in the present invention and suspension ring structural representation.
Fig. 8 is insulation inner tube, pressure-bearing outer tube, instrument top connection, sensor connector connection diagram in the present invention.
Fig. 9 is measurement assembly structural representation in the present invention.
Figure 10 is measurement assembly schematic diagram in the present invention.
Figure 11 employs the schematic diagram of protecting against shock buffer structure for NaI crystal, photomultiplier in the present invention.
Embodiment
As shown in figure 1, including pressure-bearing outer tube 1, instrument lower contact 2, insulation inner tube 3, clamp nut 4, instrument top connection 5,
Sensor connector 6 and measurement assembly, be specially：
Pressure-bearing outer tube 1：Protected for the internal part to whole logging system, it is to avoid hit, and bear high temperature, high pressure,
As shown in Figure 2,3, 4, the pressure-bearing outer tube 1 is the pipe structure that a cross section is annulus, limits pressure-bearing outer tube 1 and is managed along its own
One end on body axis bearing of trend is first end, and the other end is from first end on the second end, the first end inwall of pressure-bearing outer tube
Sealing is sequentially provided with to the second end and coordinates section 11 and internal thread segment 12, and the sealing of pressure-bearing outer tube 1 coordinates the internal diameter of section 11 to be designated as R1, held
The big footpath of internal thread segment 12 of pressure outer tube 1 is designated as R2, and R1 ＞ R2, the second end of pressure-bearing outer tube 1 has stepped hole 13 in an afterbody.
Instrument lower contact 2：For being closed to the end of pressure-bearing outer tube 1 second, as shown in figure 5, instrument lower contact 2 has one
It is individual to be just embedded in the annular boss 21 of stepped hole in afterbody, stepped hole in the afterbody of the annular boss 21 insertion pressure-bearing outer tube 1
It is welded and fixed after 13 with pressure-bearing outer tube 1 in the closing for realizing the end of pressure-bearing outer tube 1 second, the present embodiment, the main body of instrument lower contact 2 is
The conical structure of one end rounding off, so as to whole logging system during going into the well it is more smooth.
It is incubated inner tube 3：For accommodating the main test device of logging system, and isolate ambient temperature；Coaxial be built in is held
The insulation inner tube 3 in outer tube is pressed, insulation inner tube 3 is similarly the pipe structure that a cross section is annulus, limit insulation inner tube 3 on edge
One end on its own body axis bearing of trend is the 3rd end, and the other end is the 4th end of end-enclosed；
Inner tube 3 is incubated when being installed in pressure-bearing outer tube 1, first end of the 3rd end close to pressure-bearing outer tube 1 of inner tube, and position is incubated
At the internal thread segment 12 of pressure-bearing outer tube 1, and the 4th end of inner tube 3 is incubated close to the second end of pressure-bearing outer tube 1, and the 4th end end
Face props up the end face of annular boss 21 of instrument lower contact 2 and then realizes that the 4th end of insulation inner tube 3 is spacing.
Clamp nut 4：Coordinate with instrument lower contact 2 and insulation inner tube is fixed in pressure-bearing outer tube 1, clamp nut 4 has
One external thread section that can coordinate with the internal thread segment 12 of pressure-bearing outer tube 1, the center of clamp nut 4 has a circular hole, the circular hole
Diameter be more than the insulation internal diameter of inner tube 3, and be provided with the end face of clamp nut 4 connecting hole of insertion；Clamp nut 4 and pressure-bearing
The 3rd end that outer tube 1 was threadedly coupled and propped up the 3rd end end face realization insulation inner tube of insulation inner tube 3 by internal and external screw thread section is limited
Position.
Instrument top connection 5：Upper end for closing pressure-bearing outer tube 1（First end）, and the sealing of insulation inner tube 3 is realized, such as Fig. 6 institutes
Show, instrument top connection 5 be one with pressure-bearing outer coaxial tube set step-like rotary structure, limit instrument top connection along its from
One end on barrel body axis bearing of trend is the 5th end, and the other end is the 6th end；
The outer surface of step-like rotary structure is set gradually outside first along along own axes direction from the 5th end to the 6th end
Cylindrical section 51, outer guiding conical section 52, dismounting cylindrical section 53, the first sealing cylinder section 54, First Transition cylindrical section 55, first are locked
Tight cylindrical section 56, the second sealing cylinder section 57 and insulator connecting cylinder section 58；
The dismounting cylindrical section outer surface of instrument top connection is drilled with top connection removal hole.Along certainly on the outer ring of first sealing cylinder section 54
Body axis direction is evenly distributed with outside the first seal groove 54a that several extends along outer ring circumferencial direction, the first locking cylindrical section 56
Circle is provided with the external thread section that can coordinate with the internal thread segment of pressure-bearing outer tube 1, the outer ring of the second sealing cylinder section 57 along itself axle
Line direction is evenly distributed with outside the second seal groove 57a that several extends along outer ring circumferencial direction, insulator connecting cylinder section 58
Muff connecting hole 58a is drilled with circle；In the present invention, the external diameter for dismantling cylindrical section 53 is designated as R3, the first sealing cylinder section 54
External diameter be designated as R4, the external diameter of transition cylindrical section 55 is designated as R5, and the big footpath of external thread section of the first locking cylindrical section 56 is designated as R6, the
The external diameter of two sealing cylinders section 57 is designated as R7, and the external diameter of insulator connecting cylinder section 58 is designated as R8, R3 ＞ R4 ＞ R6 ＞ R5 ＞ R7
＞ R8, and the first sealing cylinder 54 external diameter R4 of section and pressure-bearing outer tube 1 sealing coordinate section R1 to match, the second sealing cylinder section 57
External diameter R7 matches with being incubated the internal diameter of inner tube 3.
And instrument top connection 5 is justified when being installed on pressure-bearing outer tube 1 as shown in figure 8, dismantling the sealing of cylindrical section 53 and first
Step surface between shell of column 54 props up the first end end face of pressure-bearing outer tube 1, and the first sealing cylinder section 54 is embedded just below pressure-bearing outer tube 1
Sealing coordinate in section 11, and formed between the first seal groove 54a of the first sealing cylinder section 54 and sealing coordinate section 11
Toroidal cavity is embedded in the first sealing ring group；The internal thread segment of first locking cylindrical section 56 and pressure-bearing outer tube 1 locks realization
Instrument top connection 5 is connected with pressure-bearing outer tube 1；Second sealing cylinder section 57 through clamp nut 4 center hole after just
In 3rd end inwall of good embedded insulation inner tube 3, and in the second seal groove and the insulation inwall of inner tube 3 of the second sealing cylinder section 57
Between the toroidal cavity that is formed be embedded in the second sealing ring group；Muff 59 is set with outside insulator connecting cylinder section 58, the guarantor
Temperature set 59 with the muff connecting hole 58a screws being threadedly coupled by being fixed in insulator connecting cylinder section 58.
The center of step-like rotary structure sets gradually sealing along along own axes direction from the 5th end to the 6th end
Coordinate circular hole portion 59, locking circular hole portion 510, First Transition circular hole portion 511, the transition circular hole portion 513 of taper hole section 512 and second, lock
Internal thread is provided with tight circular hole portion 510.
Sensor connector 6：For encapsulating sensor, make the probe portion of sensor exposed outside, and ensure to connect on instrument
The center hole part of head is sealed.As shown in Figure 7,8, the sensor connector 6 is divided into suspension ring company along its own axis direction
Socket part 61, measurement portion and top connection connecting portion 63, suspension ring connecting portion 61 are connected by screw thread with a suspension ring 7, measurement portion tool
Have in a measurement chamber 62a that simultaneously insertion sensor connector side wall is radially extended along sensor connector itself, top connection connecting portion 63
It is provided with temperature sensor installation cavity 63a and pressure sensor installation cavity 63b, temperature sensor installation cavity 63a, pressure sensor
Installation cavity 63b one end is connected with measurement chamber 62a, and the other end runs through the axial end of top connection connecting portion 63；
The outer surface of suspension ring connecting portion 61 of sensor connector 6 is drilled with sensor connector removal hole.
Wherein, the outer surface of top connection connecting portion 63 is similarly step-like revolving body, top connection connecting portion 63 along its own
From suspension ring connecting portion, joint connection side is disposed with the second cylindrical shell of column 631, the 3rd sealing cylinder to axis direction on the side
Section 632, second is locked and is evenly distributed with several along own axes direction on cylindrical section 633, the outer ring of the 3rd sealing cylinder section 632
The 3rd seal groove extended along outer ring circumferencial direction, the second locking cylindrical section 633 outer ring is provided with and can locked with instrument top connection
The external thread section of the screw-internal thread fit of circular hole portion 510.
The external diameter of second cylindrical shell of column 631 is denoted as R9, and the external diameter of the 3rd sealing cylinder section 632 is denoted as R10, the second locking circle
The big footpath of external thread section of shell of column 633 is denoted as R11, R9 ＞ R10 ＞ R11, the second cylindrical sealing cylinder of shell of column 631 and the 3rd section 632
Between step surface prop up the 5th end end face of instrument top connection 5, the 3rd sealing cylinder section 632 is embedded just below instrument top connection 5
Sealing coordinate circular hole portion 59 in, and the 3rd sealing cylinder section 632 the 3rd seal groove and sealing coordinate circular hole portion 59 between
The toroidal cavity of formation is embedded in the 3rd sealing ring group, the external thread section and the lock of instrument top connection 5 of the second locking cylindrical section 633
The tight screw thread of circular hole portion 510 locks the locking for realizing instrument top connection 5 and sensor connector 6.
Measurement assembly 7, as the core of geothermal logging system, for measuring well temperature, well temperature gradient, pressure and nature
Gamma, and the data of collection by WIFI module can be transferred to computer.
As shown in Fig. 9,10, measurement assembly mainly includes NaI crystal 71, the photomultiplier being arranged in insulation inner tube
72nd, main circuit board 73, power panel 74, WIFI module 75, lithium battery 76, and the TEMP in sensor connector 6
Device 77, pressure sensor 78；NaI crystal 71, photomultiplier 72, power panel 74, main circuit board 73, WIFI module 75, lithium electricity
Pond 76 is arranged in order on the axis of insulation inner tube 3 from the 4th end to the 3rd end, and microprocessing unit is provided with main circuit board 73
（MCU）, discriminator, amplifier and D/A converter module.
Wherein, photomultiplier 72 has a photocathode, an anode and multiplier stage, and photocathode is close to be arranged on
The side of NaI crystal 71, multiplier stage is powered by lithium battery 76 by power panel 74, and anode passes sequentially through amplifier, discriminator by arteries and veins
Current signal is rushed to export to microprocessing unit；WIFI module 75 accesses microprocessing unit, WIFI by wiring, main circuit board 73
Module 75 includes antenna pedestal, antenna expelling plate, power switch, charging socket；
Temperature sensor 77 is sealingly mounted in the temperature sensor installation cavity 63a of sensor connector 6, the head of temperature sensor 77
Portion stretches into measurement chamber, and the afterbody of temperature sensor is connected by wiring with the D/A converter module on main circuit board；
Pressure sensor 78 is sealingly mounted in the pressure sensor installation cavity 63b of sensor connector, the head of pressure sensor 78
Portion stretches into measurement chamber, and the afterbody of pressure sensor is connected by wiring with the D/A converter module on main circuit board, referring to Fig. 8.
Measurement assembly 7 also include in insulator 713, first absorber 710 in absorber 79, second, upper absorber 711,
Lower absorber 712, insulator 713 is embedded in muff 59, and absorber is provided between insulator 713 and lithium battery 76
711, absorber 79 in first are provided between WIFI module 75 and main circuit board 73, main circuit board 73 and power panel 74 it
Between be provided with absorber 710 in second, NaI crystal 71 and be incubated inner tube 3 the 4th end between be provided with lower absorber 712.
In the present invention, realize that the NaI crystal 71 of gamma ray well logging, photomultiplier 72 employ protecting against shock buffering knot
Structure, as shown in figure 11, NaI crystal 71, photomultiplier 72 are successively set in an inner sleeve 714, and the one of inner sleeve 714
End is connected by righting joint 715 with lower absorber 712, and the other end of inner sleeve 714 passes through another joint and power panel
74 connections；One end away from NaI crystal 71 in photomultiplier 72 is provided with photomultiplier transit base, has on the photomultiplier transit base
There is a spring positioning sleeve 715, anti-chatter spring 716 is set with spring positioning sleeve 715, the other end of anti-chatter spring 716 is supported
The firmly end of inner sleeve 714.
It is used as the present embodiment more specifically embodiment：Antidetonation sponge is set between righting joint 719 and inner sleeve 714
717 and rubber blanket 718.
Operation principle：
Underground natural thermograde is due to that the diffusion of earth interior thermal source is caused, if geologic body is uniform or concentric
Spherical to be uniformly distributed, geothermal gradient is exactly very stable amount, and well temperature is exactly constant with change in depth, referred to as normal geothermal gradient.
The average value of China's most area geothermal gradient is 0.03 DEG C/meter.When the change of the factors such as geological structure or geologic body in itself not
Uniformly, spherical thermal equilibrium condition is just destroyed, and office will occur for the axial-temperature gradient in drilling and drilling radial temperature profile
Portion changes.
Down-hole pressure is caused by downhole fluid density and vertical depth.Downhole fluid density depends on composition fluid
Solid formation, liquid, the composition of gas.If downhole fluid is made up of single homogeneous liquid, pressure is just the letter of vertical depth
Number.
Well temperature, pressure detection well are exactly to judge that may be present around drilling by the change of observed temperature, barometric gradient
Abnormal conditions, obtain information with practical value.Underground fluid（Including underground water, oil, natural gas etc.）Flowing and density
It is abnormal that change causes well moderate pressure.Solid formation precipitation point in volumetric expansion when formation fluids enter drilling, well liquid
From soluble mineral dissolving diffusion etc. can all cause temperature, the pressure change along borehole axial.The radioactivity stratum of abnormality,
The outer cementing liberated heat of sleeve pipe can also cause temperature, the change of pressure when oxidation stratum, shaft building.
Underground GR transmitted intensity depends on the content of radioactive element in rock stratum, digital geothermal logging of the invention
System can be used to measure underground GR x ray intensity x, divides rock stratum, judges lithology, contrast stratum, task of explanation layer
It is thick, determine earth formation.
Gamma ray detection operation principle：NaI crystal and photomultiplier composition GR detector, photomultiplier
Added with incremental positive voltage on each dynode, gamma rays excites lower NaI crystal to release photon, and these photons are beaten in photomultiplier transit
It can be made to release photoelectron on the photocathode of pipe, photoelectron constantly accelerates propagation under each dynode effect of photomultiplier,
The last pulse current sufficiently large in the anode formation amplitude of photomultiplier.Pulse current is subjected to electric current by preamplifier
Amplification, discriminator are selected, and are output to microprocessing unit（MCU）Carry out counting processing.
Well temperature operation principle：The measurement of well temperature is using the PT1000 RTDs of small time constant as sensor, and energy is quick
The change of temperature in response drilling, temperature signal is handled through the laggard single chip computer measurement of analog-to-digital conversion.
Pressure duty principle：Pressure sensor uses high-temp pressure sensor, and it is built-in with a PT1000 RTDs work
For built-in temperature sensor, microprocessing unit passes through the output signal of pressure sensor, the output signal of built-in temperature sensor
With secondary calibration equation, calculating is modified, actual pressure value is finally given.
The key technical indexes of the HTHP geothermal logging system of the embodiment of the present invention is as follows：
1) gamma ray detection sensor：Ф 30 × 80NaI crystal+GDB23 photomultipliers
2) gamma ray detection count range：0-65000CPS
3) gamma ray detection energy threshold：≥0.06MeV
4) measurement accuracy：5%F.S
5) well temperature resolution ratio：0.025℃
6) logging speed：≤600m/H
7) lowering velocity is above carried：≤1000m/H
8) thermograde measurement range：0.02 DEG C/m~2 DEG C/m when 600m/H (test the speed~)
9) temperature survey sensor：Pt-1000
10) instrument pressure-bearing：≤55MPa
11) instrument heatproof：-10℃—+250℃；Continuous work 6 hours, interval 6 hours
12) temperature survey scope：0—250℃
13) instrument built-in power：Lithium electricity 7.4V 8000mAH
14) signal output：WiFi.
Application method：
High temperature high-voltage digital geothermal logging system of the present invention need to be logged well with reference to Logging Software " LoggingWifi ".
1) Logging Software on PC is started
The Logging Software " LoggingWifi " of desktop is first turned on, waits software to start and finishes.
2) it is electric on instrument
Back out the upper instrument joint and pressure-bearing outer tube of HTHP geothermal logging system.It need to keep flat instrument when backing out pressure-bearing outer tube
On clean level land or on estrade, instrument two needs to pad upper V-groove cushion block.Because measurement pipe is longer, instrument insulation is extracted out
During inner tube, inner tube need to be incubated with tight instrument is held.There are power switch, WiFi antennas, charge port in the middle part of instrument insulation inner tube.Need
Make power switch device and charge port and WiFi antennas completely exposed（See Figure）, could at this moment be opened with PC connection communication
Instrument power source.
It is noted here that：Photomultiplier is in the bottom of instrument inner tube, so whole branch instrument should not typically be extracted out, prevents
Only photomultiplier is impacted damage.All it is intensity very weak position at the muff of instrument, at WiFi antennas, it should be noted that prevent
Accidental damage.
3) it is electric on depth survey top sheave
Depth survey top sheave is known be gone into the well for the digital underground heat logging system of HTHP and registered depth equipment, should
Used time is hung on drilling machine hook, and coring winch steel wire bypasses pulley decentralization logger.The depth information of depth pulley is wireless
Mode passes to PC in real time, and using full charge is preceding wanted, the direction of going into the well identified by depth survey top sheave loads steel wire, opens
Power supply, then measurement top sheave is above carried to appropriate height, depth survey pulley is simply fixed if necessary, prevent from rocking.
4) connection is set up
Under normal circumstances, after the completion of above step, the prompting that instrument has been connected occurs on PC software interface.
The first step, checks the instrument connection number connected, and lower well measurements should have 2 instruments connected（Under one
Well instrument and a depth survey pulley）If opening instrument after 1 minute, or display will be checked less than the instrument of 2 connections
Whether the HTHP geothermal logging instrument of the present invention has powered.
Second step, clicks on computer desktop software【Instrumentation】, there is instrumentation dialog box, can show that two have connected
The specifying information of equipment is connect, they are respectively displayed in geothermal logging system list and depth scale list.
3rd step, is clicked on【It is determined that】Next step operation is carried out to instrument.
5) parameter setting
The first step, sets instrument parameter, and detailed content is as follows.
A) time of measuring is started：Instrument starts gathered data, unit after this time：Minute.Set and start time of measuring,
Measurement or the measurement since shaft bottom since well head can be flexibly selected, a large amount of hashes will not be thus produced.Separately
Outside, instrument is electricity-saving state operation before time of measuring is started, so as to save electricity consumption, and extension is once gone into the well the working time,
Reduce instrument internal temperature rise.
B) time of measuring is terminated：Instrument stops sampled data, unit after this time：Minute.Set and suitably terminate to survey
Amount time and beginning time of measuring can reduce instrument self-heating, protection instrument and saving battery electric quantity.
It should be noted in this step：No matter from well head down survey when, or since shaft bottom up survey will reserve it is enough survey
The amount time, it is ensured that before this time reaches, downhole probe is reached at the well section to be surveyed.Terminating time of measuring will also allow some leeway,
If not, purpose well section instrument has not been surveyed also just to stop measuring.
C) metering system：Continuous measurement can only be selected at present.
D) sampling interval duration：Sampling interval is set, and acquiescence 1000ms samples a bit, minimum 500ms, maximum 60000ms,
According to the live different correct selection sampling interval durations of needs.Time interval is smaller, and total amount of data is bigger, the measuring point of unit depth
Number is more（It is again related to logging speed）.
E) outer diameter of cable：The external diameter of the live steel wire rope of going into the well of well logging.It please correctly enter, input error can produce depth mistake
Difference.
F) depth direction：Default value is positive, has been set when dispatching from the factory.Depth counting direction can be changed, when having changed it
During its depth survey pulley, and it is not increase depth when instrument is transferred, is not to reduce depth to be modified as phase when above carrying
Anti- value.
The parameter of downhole probe is set first, clicked on after setting up【Start】Button, inserting tube initially enters working condition.So
The parameter of depth pulley is set again afterwards, clicked on after being provided with【Start】Button, depth pulley enters measuring state.
The digital underground heat logging instrument of HTHP of the present invention is re-assemblied, that is, is incubated inner tube and is locked again with pressure-bearing outer tube
Tightly, need to wipe clean connection screw thread before, check whether pressure bearing and seal circle has damage, and equably spread on pressure bearing and seal circle
A little high temperature silicone grease.
6) well measurements under
Start winch, sling downhole probe, the digital underground heat logging instrument of HTHP of the invention is slowly in lower going-into-well.Work as instrument
Stop winch when being alignd with the junction of steel wire rope and well head, carries out the operation such as depth clearing.If setting depth, right mouse
Key clicks on " depth ", it is possible to which it is arbitrary value to set current depth.Downhole probe should be correctly set according to live actual conditions
The real depth in place.
When clock counts down to 0 S after starting to measure, downhole instrument begins to acquisition and recording measurement data.
To time of measuring is terminated, downhole probe just stops measurement and have recorded.In the case of having, end time of measuring is less than just
Want to terminate measurement, you can also terminate at any time.Click on software interface【Stop measurement】To terminate.May be not when this is to determine operation
Downhole instrument is connected, " WiFi connection failures, please by inserting tube power-off restarting at this moment can be pointed out！", confirming button is clicked on, is waited down
When the secondary digital underground heat logging system of connection HTHP communicates, downhole instrument power-off is restarted into once automatic connection again.
7) data readback
Logging Software is opened, the disconnected electricity once of downhole instrument is restarted, after spending 30 seconds, clicked on【Inserting tube is played back】, software ejection playback dialogue
Frame, selection needs the instrument title played back, clicks on and determines.
When ejecting " playing back successfully, data file has been preserved " prompting, that is, data readback success is represented, clicks on and determines.Number
According to can be automatically saved under this software installation catalogue in data folder.Data file can be opened with the LoggingPro of PC
Or checked with the notepad software opening of Win systems.
If data readback fail, again by above step perform once, during playback of data try one's best allow inserting tube with
The distance between PC keeps the electricity of downhole instrument sufficient close to some.
8) data are illustrated
Clicked in software【LoggingPro】Into going out figure interface.Click on menu bar【File】, selection【Open file】, enter
Installation directory selects data folder, and correct selection data file is simultaneously opened.Click on【Figure】Suitable scale is set.After modification
Press【Carriage return】Preserve.
Using the logging system of structure of the present invention, because the measurement device in insulation inner tube is closed in two housings,
Duplicate protection is realized, the inside and outside heat insulation pressure of insulation inner tube is smoothly realized, it is ensured that logging system can be under high temperature and high pressure environment
Normal work, reliable operating temperature interval reaches -10 DEG C -+250 DEG C, and pressure-bearing reaches 55 MPa, smoothly realize high temperature,
Well logging under high pressure operating mode.
Claims (6)
1. a kind of digital underground heat logging system of HTHP, it is characterised in that：Including
One pressure-bearing outer tube, the pressure-bearing outer tube is the pipe structure that a cross section is annulus, limit pressure-bearing outer tube along its own
One end on body axis bearing of trend is first end, the other end be on the second end, the first end inwall of the pressure-bearing outer tube from
First end is sequentially provided with sealing to the second end and coordinates section and internal thread segment, and the sealing of pressure-bearing outer tube coordinates section internal diameter to be designated as R1, held
The big footpath of internal thread segment of pressure outer tube is designated as R2, and R1 ＞ R2, the second end of the pressure-bearing outer tube has stepped hole in an afterbody；
The one instrument lower contact for being closed to the end of pressure-bearing outer tube second, the instrument lower contact just can be embedding with one
Enter in the annular boss of stepped hole in afterbody, the afterbody of the annular boss insertion pressure-bearing outer tube and welded after stepped hole with pressure-bearing outer tube
Connect the fixed closing for realizing the end of pressure-bearing outer tube second；
The one coaxial insulation inner tube being built in pressure-bearing outer tube, the insulation inner tube is the pipe structure that a cross section is annulus,
Insulation inner tube is limited along one end on its own body axis bearing of trend as the 3rd end, the other end is the 4 of end-enclosed
End；It is described insulation inner tube the 3rd end close to pressure-bearing outer tube first end, and positioned at pressure-bearing outer tube internal thread segment at, the guarantor
4th end of warm inner tube is close to the second end of pressure-bearing outer tube, and the 4th end end face props up the annular boss end face reality of instrument lower contact
Now the 4th end of insulation inner tube is spacing；
One is used to be incubated the clamp nut that inner tube is positioned, and the clamp nut, which has one, to be coordinated with pressure-bearing outer tube internal thread segment
External thread section, there is a diameter to be more than the circular hole of insulation inner tube diameter the center of clamp nut, and at the end of clamp nut
The connecting hole of insertion is provided with face；The clamp nut is threadedly coupled by internal and external screw thread section with pressure-bearing outer tube and props up insulation
3rd end end face of inner tube realizes that the 3rd end of insulation inner tube is spacing；
One instrument top connection, the instrument top connection is a step-like rotary structure set with pressure-bearing outer coaxial tube, is limited
Instrument top connection is being the 5th end along one end on its own body axis bearing of trend, and the other end is the 6th end；
The outer surface of step-like rotary structure is set gradually outside first along along own axes direction from the 5th end to the 6th end
Cylindrical section, outer guiding conical section, dismounting cylindrical section, the first sealing cylinder section, First Transition cylindrical section, first lock cylindrical section,
Second sealing cylinder section and insulator connecting cylinder section；
Several is evenly distributed with the outer ring of the first sealing cylinder section along own axes direction along outer ring circumferencial direction to extend
The first seal groove, the first locking cylindrical section outer ring is provided with the external thread section that can coordinate with pressure-bearing outer tube internal thread segment, second
Several the second seal groove extended along outer ring circumferencial direction is evenly distributed with along own axes direction on the outer ring of sealing cylinder section,
Muff connecting hole is drilled with the outer ring of the insulator connecting cylinder section；
The external diameter of the dismounting cylindrical section is designated as R3, and the external diameter of the first sealing cylinder section is designated as R4, the external diameter note of transition cylindrical section
For R5, the big footpath of external thread section of the first locking cylindrical section is designated as R6, and the external diameter of the second sealing cylinder section is designated as R7, insulator connection
The external diameter of cylindrical section is designated as R8, R3 ＞ R4 ＞ R6 ＞ R5 ＞ R7 ＞ R8, and the first sealing cylinder section external diameter R4 and pressure-bearing outer tube
Sealing coordinates section R1 to match, and the second sealing cylinder section external diameter R7 matches with being incubated the internal diameter of inner tube；
Step surface between dismounting cylindrical section and the first sealing cylinder section props up the first end end face of pressure-bearing outer tube, and first is close
The sealing that envelope cylindrical section is embedded just below pressure-bearing outer tube coordinates in section, and matches somebody with somebody in the first seal groove of the first sealing cylinder section with sealing
Close the toroidal cavity formed between section and be embedded in the first sealing ring group；The internal thread segment of first locking cylindrical section and pressure-bearing outer tube is matched somebody with somebody
Close locking and realize being connected for instrument top connection and pressure-bearing outer tube；Second sealing cylinder section passes through the center hole of clamp nut
In the 3rd end inwall for being embedded just below insulation inner tube afterwards, and in the second seal groove and insulation inner tube wall of the second sealing cylinder section
Between the toroidal cavity that is formed be embedded in the second sealing ring group；The insulator connecting cylinder section is outer to be set with muff, described
Muff is fixed in insulator connecting cylinder section by the screw being threadedly coupled with muff connecting hole；
The center of step-like rotary structure along along own axes direction, is setting gradually sealing cooperation from the 5th end to the 6th end
In being provided with circular hole portion, locking circular hole portion, First Transition circular hole portion, taper hole section and the second transition circular hole portion, locking circular hole portion
Screw thread；
One sensor connector, the sensor connector along its own axis direction be divided into suspension ring connecting portion, measurement portion and on connect
Head connecting portion, suspension ring connecting portion is connected by screw thread with a suspension ring, and measurement portion has one along sensor connector itself radial direction
Extend and temperature sensor installation cavity and pressure biography are provided with the measurement chamber of simultaneously insertion sensor connector side wall, top connection connecting portion
Sensor installation cavity, the temperature sensor installation cavity, one end of pressure sensor installation cavity are connected with measurement chamber, and the other end runs through
The axial end of top connection connecting portion；
The outer surface of the top connection connecting portion is similarly step-like revolving body, top connection connecting portion along its own axis direction from
Joint connection side is disposed with the second cylindrical shell of column, the 3rd sealing cylinder section, the second locking circle to suspension ring connecting portion on the side
Shell of column,
Several is evenly distributed with the outer ring of the 3rd sealing cylinder section along own axes direction along outer ring circumferencial direction to extend
The 3rd seal groove, the second locking cylindrical section outer ring is provided with can lock the outer spiral shell of circular hole portion screw-internal thread fit with instrument top connection
Line section,
The external diameter of the second cylindrical shell of column is denoted as R9, and the external diameter of the 3rd sealing cylinder section is denoted as R10, the second locking cylindrical section
The big footpath of external thread section is denoted as R11, R9 ＞ R10 ＞ R11,
Step surface between second cylindrical shell of column and the 3rd sealing cylinder section props up the 5th end end face of instrument top connection, and the 3rd is close
Envelope cylindrical section be embedded just below instrument top connection sealing coordinate circular hole portion in, and the 3rd sealing cylinder section the 3rd seal groove with
Sealing coordinates between circular hole portion the toroidal cavity that is formed to be embedded in the 3rd sealing ring group, the external thread section of the second locking cylindrical section with
The locking circular hole portion screw thread of instrument top connection locks the locking for realizing instrument top connection and sensor connector；
One measurement assembly, the measurement assembly mainly includes the NaI crystal, photomultiplier, main line being arranged in insulation inner tube
Road plate, power panel, WIFI module, lithium battery, and temperature sensor, pressure sensor in sensor connector；
The NaI crystal, photomultiplier, power panel, main circuit board, WIFI module, lithium battery are on the axis of insulation inner tube
It is arranged in order from the 4th end to the 3rd end, microprocessing unit, discriminator, amplifier and digital-to-analogue modulus of conversion is installed on main circuit board
Block；
The photomultiplier has a photocathode, an anode and multiplier stage, and photocathode is close to be arranged on NaI crystal one
Side, multiplier stage is powered by lithium battery by power panel, anode pass sequentially through amplifier, discriminator by pulsed current signal export to
Microprocessing unit；
The WIFI module accesses microprocessing unit by wiring, main circuit board, and WIFI module includes antenna pedestal, antenna and launched
Plate, power switch, charging socket；
The temperature sensor is sealingly mounted in the temperature sensor installation cavity of sensor connector, and the head of temperature sensor is stretched
Enter and measure chamber, the afterbody of temperature sensor is connected by wiring with the D/A converter module on main circuit board；
The pressure sensor is sealingly mounted in the pressure sensor installation cavity of sensor connector, and the head of pressure sensor is stretched
Enter and measure chamber, the afterbody of pressure sensor is connected by wiring with the D/A converter module on main circuit board.
2. the digital underground heat logging system of HTHP according to claim 1, it is characterised in that：
The measurement assembly also includes absorber in first, absorber, upper absorber, lower absorber in second, insulator with
Absorber is provided between lithium battery, absorber in first is provided between WIFI module and main circuit board, in main circuit
Absorber in second is provided between plate and power panel, lower heat absorption is provided between the 4th end of NaI crystal and insulation inner tube
Body.
3. the digital underground heat logging system of HTHP according to claim 2, it is characterised in that：The NaI crystal, photoelectricity
Multiplier tube is successively set in an inner sleeve, and one end of inner sleeve is connected by righting joint with lower absorber, interior
The other end of sleeve pipe is connected by another joint with power panel；One end away from NaI crystal in photomultiplier is provided with photoelectricity
Double base, has a spring positioning sleeve on the photomultiplier transit base, anti-chatter spring, antidetonation are set with spring positioning sleeve
The other end of spring props up inner sleeve tube end.
4. the digital underground heat logging system of HTHP according to claim 3, it is characterised in that：The righting joint with it is interior
Antidetonation sponge and rubber blanket are set between sleeve pipe.
5. the digital underground heat logging system of HTHP according to claim 1, it is characterised in that：The sensor connector
Suspension ring connecting portion outer surface is drilled with sensor connector removal hole.
6. the digital underground heat logging system of HTHP according to claim 1, it is characterised in that：The instrument top connection
Dismounting cylindrical section outer surface is drilled with top connection removal hole.
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| CN110242282A (en) * | 2019-07-19 | 2019-09-17 | 西安威盛电子科技股份有限公司 | A kind of downhole video instrument |
| CN111663938A (en) * | 2019-03-05 | 2020-09-15 | 中国石油化工股份有限公司 | High-temperature drilling temperature measurement method |
| CN113532938A (en) * | 2020-09-24 | 2021-10-22 | 中国地质科学院岩溶地质研究所 | Deep hole in-situ sampling equipment |
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| CN113532938A (en) * | 2020-09-24 | 2021-10-22 | 中国地质科学院岩溶地质研究所 | Deep hole in-situ sampling equipment |
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