CN209444324U - A kind of measurement while drilling device - Google Patents
A kind of measurement while drilling device Download PDFInfo
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- CN209444324U CN209444324U CN201821780505.4U CN201821780505U CN209444324U CN 209444324 U CN209444324 U CN 209444324U CN 201821780505 U CN201821780505 U CN 201821780505U CN 209444324 U CN209444324 U CN 209444324U
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Abstract
The utility model discloses a kind of measurement while drilling device, described device includes: protection sleeve, is process by an independent drill collar, its internal structure of the protection sleeve seal protection and device；Neutron circuit framework is mounted on the protection sleeve internal upper part；Density lines skeleton is mounted on lower part in the protection sleeve, docks with the neutron circuit framework；Assembly is measured with compensated neutron is bored, is mounted on the neutron circuit framework；Assembly is measured with azimuthal density image is bored, is mounted on the density lines skeleton.Densilog instrument and compensated neutron logging tool are integrated in the same drill collar by device according to the present utility model, the operation difficulty for thus greatly reducing packing density logging instrument and compensated neutron logging tool and being tested.Compared to the prior art, device according to the present utility model can effectively shorten logger length, improve compensated neutron and with the consistency for boring density measure.
Description
Technical field
The utility model relates to geological exploration fields, and in particular to a kind of measurement while drilling device.
Background technique
In geological exploration field, density log occupies consequence in well logging field with boring neutron well logging, and
When identification formation lithology, calculate porosity, permeability, oil saturation and oil/gas show etc. and have important role, be
With the required argument for boring earth-layer fine evaluation, one of the key technology of gas-bearing formation is even more identified.
In order to accurately carry out geosteering, usually requires to carry out azimuthal formation density imaging measurement with density is bored, pick up
Stratigraphic dip accurately adjusts borehole track so as to be changed according to stratigraphic structure, improves oil reservoir penetrance, therefore
Orientation density is the inexorable trend of well logging development.
In the prior art, although having been achieved for certain achievement with brill neutron and density log, current is close
Degree logging instrument and compensated neutron logging tool is simultaneously not implemented integrated, can only measure work respectively.Since two kinds of instruments are distinguished
Using two radioactive sources, install and use that process is very complicated, and installation measurement considerably increases workload respectively and work is difficult
Degree.Also, since instrument is installed respectively, it is unfavorable for salvaging in the event of an accident.
Utility model content
For operating process present in densilog instrument in the prior art and compensated neutron logging tool installation, measurement process
Cumbersome problem, the utility model provide a kind of measurement while drilling device, and described device includes:
Protect sleeve, be process by an independent drill collar, its internal structure of the protection sleeve seal protection with
And device；
Neutron circuit framework is mounted on the protection sleeve internal upper part；
Density lines skeleton is mounted on lower part in the protection sleeve, docks with the neutron circuit framework；
Assembly is measured with compensated neutron is bored, is mounted on the neutron circuit framework；
Assembly is measured with azimuthal density image is bored, is mounted on the density lines skeleton.
In one embodiment, it is described with bore compensated neutron measurement assembly include neutron source, for disposing the neutron source
Neutron source chamber, neutron source short spaced detector, neutron source long spacing detector, in which:
The neutron source chamber is mounted on above the neutron source short spaced detector and closely the neutron source short space is visited
Device is surveyed, is separated between the neutron source chamber and the neutron source short spaced detector by polyethylene shield；
The neutron source long spacing detector is mounted below the neutron source short spaced detector.
In one embodiment:
The neutron source chamber makees shielding processing to completely cut off contact of the neutron source chamber measurement side with mud；
The neutron source outdoor is equipped with mud ejector.
In one embodiment, it is described with bore azimuthal density image measurement assembly include gamma ray source, for placing gamma ray source
Radioactivity source chamber, short space crystal detection, long space crystal detection, in which:
By tungsten nickel iron alloy between the radioactivity source chamber and the short space crystal detection, the long space crystal detection
Shield separates, and the tungsten nickel iron alloy shield is machined with low-density energy window, and collimates with the source of the radioactivity source chamber
Hole communicates.
In one embodiment, described with azimuthal density image measurement assembly is bored further includes detecting for installing the short space
The density bearing shell of crystal and the long space crystal detection, wherein in the density bearing shell and the density
Spring leaf is installed between circuit framework.
In one embodiment, described device further includes ultrasonic caliper logging assembly and/or orientation assembly.
In one embodiment, the ultrasonic caliper logging assembly includes:
Ultrasonic sensor is mounted on the protection sleeve outer wall；
Ultrasonic wave hole diameter circuit board is mounted on the density lines skeleton, is located at described with brill azimuthal density image
Measure assembly lower part.
In one embodiment, the aspect sensor of the orientation assembly, it is described with bore compensated neutron measurement assembly in
Sub- He3 pipe, the density detection crystal and the ultrasonic caliper logging assembly in brill azimuthal density image measurement assembly
In the center line of ultrasonic sensor be located on the same line.
In one embodiment, described device further includes safe pipe nipple, and the safe pipe nipple is mounted on the protection sleeve
End.
In one embodiment, described device further includes battery short section, and the battery short section is mounted under the protection sleeve
End, lower end and the impulse generator of the battery short section are connected directly.
Densilog instrument and compensated neutron logging tool are integrated in the same drill collar by device according to the present utility model,
The operation difficulty for thus greatly reducing packing density logging instrument and compensated neutron logging tool and being tested.Compared to existing skill
Art, device according to the present utility model can effectively shorten logger length, improve compensated neutron and with boring density measure
Consistency.
The other feature or advantage of the utility model will illustrate in the following description.Also, the portion of the utility model
Dtex sign or advantage will be become apparent by specification, or will be appreciated that and implementing the utility model.This is practical
Novel purpose and certain advantages can be realized by step specifically noted in the specification, claims and drawings
Or it obtains.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used together to explain the utility model, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the apparatus structure sectional view according to an embodiment of the present invention；
Fig. 2~Fig. 5 is the device part-structure sectional view according to the utility model embodiment；
Fig. 6 is the device control circuit logical construction schematic diagram according to an embodiment of the present invention.
Specific embodiment
It is described in detail the embodiments of the present invention below with reference to accompanying drawings and embodiments, whereby the utility model
Implementation personnel can fully understand how applied technology method solves technical problem to the utility model, and reach technical effect
Simultaneously the utility model is embodied according to above-mentioned realization process in realization process.As long as it should be noted that not constituting conflict, this reality
It can be combined with each other with each feature in each embodiment and each embodiment in novel, be formed by technical solution and exist
Within the protection scope of the utility model.
For in the prior art, densilog instrument and compensated neutron logging tool, which need to pacify respectively, to be turned and measures respectively
Problem, the utility model proposes a kind of measurement while drilling device.In the measurement while drilling device of the utility model, by density log
Instrument and compensated neutron logging tool are integrated in a drill collar, are realized with brill azimuthal density image and compensated neutron integration.In this way
The degree erroneous for installation of densilog instrument and compensated neutron logging tool can be greatly simplified, improves compensated neutron and with brill density
The consistency of measurement.
Further, it is contemplated that the abominable of subsurface environment, in order to retainer member structure stability and reduce its device
Part installs the operation difficulty into drill collar, and in one embodiment, the device of the utility model uses skeleton construction, that is, measurement
It is mounted on skeleton with device, skeleton is mounted in drill collar shell.
Further, it is contemplated that densilog instrument and the compensated neutron logging tool radioactive source that be respectively adopted two different is
It avoids interfering, therefore needs it is enabled to have certain independence of structure each other when being integrated in a drill collar.Therefore, exist
In one embodiment, double skeleton structures are used, the related device construction of respectively densilog instrument and compensated neutron logging tool is only
Vertical support frame, two skeletons are installed in the top in drill collar and lower part respectively.
Specifically, in one embodiment, device includes:
Sleeve is protected, is process by an independent drill collar, its internal structure of sleeve seal protection and device are protected
Part；
Neutron circuit framework is mounted on protection sleeve internal upper part；
Density lines skeleton is mounted on lower part in protection sleeve, docks with neutron circuit framework；
Assembly is measured with compensated neutron is bored, is mounted on neutron circuit framework；
Assembly is measured with azimuthal density image is bored, is mounted on density lines skeleton.
It further, in one embodiment, include neutron source, for disposing neutron source with compensated neutron measurement assembly is bored
Neutron source chamber, neutron source short spaced detector, neutron source long spacing detector, in which:
Neutron source chamber is mounted on neutron source short spaced detector top and closely neutron source short spaced detector, neutron source chamber
It is separated between neutron source short spaced detector by polyethylene shield；
Neutron source long spacing detector is mounted below neutron source short spaced detector.
Further, in one embodiment, neutron source chamber make shielding processing with completely cut off neutron source chamber measurement side with
The contact of mud.Also, neutron source outdoor is equipped with mud ejector.
Specifically, in one embodiment, being mounted on neutron circuit framework with compensated neutron measurement assembly is bored, by neutron
Source, neutron source long spacing detector, neutron source short spaced detector, neutron measurement circuit composition.Neutron source uses magnesium beryllium neutron
Source, long spacing detector is using 3 He3 pipe, and source is away from for 608mm；Short spaced detector is using 1 He3 pipe, and source is away from for 390mm.
In order to improve the accuracy of neutron measurement, need to shield neutron source room in drill collar, so that neutron source chamber measures side
Not with mud contacts, while mud ejector is installed additional in neutron source outdoor, neutron source closely short spaced detector, between the two
Also it is separated by shield, shielding material is selected as polyethylene.
It further, in one embodiment, include gamma ray source, for placing gamma with azimuthal density image measurement assembly is bored
The radioactivity source chamber in source, short space crystal detection, long space crystal detection, in which:
It is separated between radioactivity source chamber and short space crystal detection, long space crystal detection by tungsten nickel iron alloy shield,
Tungsten nickel iron alloy shield is machined with low-density energy window, and communicates with the source collimating aperture of radioactivity source chamber.
It further, in one embodiment, further include being visited for installing short space with azimuthal density image measurement assembly is bored
Survey the density bearing shell of crystal and long space crystal detection, wherein it is stamped density abrasion-proof cover plate on the outside of density bearing shell,
There are long space window and short space window in the corresponding position portion of density abrasion-proof cover plate.
Further, in one embodiment, one TongAn of radioactivity source chamber, short space crystal detection and long space crystal detection
In density bearing shell.
Specifically, in one embodiment, being mounted on density lines skeleton with azimuthal density image measurement assembly is bored, by gal
Horse radioactive source, long space crystal detection, long space photomultiplier tube, short space crystal detection, short space photomultiplier tube composition.
Radioactive source uses energy for the 137Cs gamma ray source of 0.662MeV, and source storehouse material is tungsten nickel iron alloy, and it is wedge that source, which collimates hole shape,
Shape, angle are 60 °, fill the beryllium blend compounds sealing of low-density.Detector measurement high sensitivity, short space detection are required in underground
Device, long spacing detector are all made of ultrathin sodium iodide (NaI) crystal gamma sensor, source away from respectively 165mm and 394mm,
Adapt to the harsh environments such as high temperature and pressure, HI high impact vibration.It is separated between radioactive source and detector by shield, shield
Material is selected as tungsten nickel iron alloy.Shield is machined with low-density energy window, and communicates with collimating aperture.Gamma ray source is placed in radiation
It is installed along in density bearing shell in property source chamber with double spacing detectors.
Further, in one embodiment, spring leaf is installed between density bearing shell and density lines skeleton, from
And realize density instrument patch borehole wall measurement, software compensation calculation method is recycled, influence of the wellbore to measurement result is reduced.
Further, in one embodiment, it in order to correct the influence that standoff measures neutron porosity, improves all
The quality of core measurement data, device further include ultrasonic caliper logging assembly.
Specifically, in one embodiment, ultrasonic caliper logging assembly includes:
Ultrasonic sensor is mounted on protection sleeve outer wall；
Ultrasonic wave hole diameter circuit board, is mounted on density lines skeleton, is located at and measures assembly with brill azimuthal density image
Lower part.
Specifically, in one embodiment, ultrasonic caliper logging assembly is in 180 ° of distributing installation ultrasonic sensors, ultrasonic sensing
Device can be two or more, and resonance frequency is 500~1MHz, and heatproof is at least 150 DEG C, and pressure resistance is at least 120Mpa.?
In one embodiment, using double ultrasonic sensors, the lead of ultrasonic sensor is connect by conducting wire with ultrasonic caliper logging assembly.If
Using multiple ultrasonic sensors, then it is uniformly distributed and is mounted on drill collar particle size section surface.Ultrasonic hole diameter data are used for this measurement
Device and Other Instruments borehole compensation calculate.
Further, in one embodiment, device further includes orientation assembly.Orientation assembly is surveyed by aspect sensor and orientation
Measure circuit composition.
Specifically, in one embodiment, for the consistency for guaranteeing orientation, the aspect sensor of orientation assembly is compensated with brill
Neutron He3 in neutron measurement assembly is managed, with density detection crystal (the density long space bored in azimuthal density image measurement assembly
Crystal detection, density short space crystal detection) and the ultrasonic sensor in ultrasonic caliper logging assembly center line be located at it is same
On straight line.
Specifically, in one embodiment, wellbore stratum is divided into 16 sectors using azimuthal measurement circuit, it is every in this way
22.5 ° of distribution, one sector signals, in conjunction with collected formation lithology density data, using graduation apparatus, mutually decoupling is formed
It focuses, to the color matching of measurement result interpolation, image synthesis is focused, simulation obtains the density image of reflection down-hole formation feature, thus
The azimuthal density image measurement for realizing stratum, calculating, the identification of bed boundary etc. of stratigraphic dip are carried out for application Orientation density
Geosteering work provides accurate data information.
Further, in one embodiment, power panel and channel neutron signal amplifying circuit are placed on neutron circuit framework
Plate；Power panel, 2 pieces of ultrasonic wave hole diameter circuit boards, sensing directional circuit board, acquisition control electricity are sequentially placed on density lines skeleton
Road plate, communicating circuit plate, wherein power panel is placed using the design of 3 faces.Circuit board is all made of wide 52mm design, fixed to use indent
Scheme.Wiring board carries out glue spraying sealing after test experiments, the anti-dress in the front concentrated using circuit components when installation with
Skeleton contact design, for the component of superelevation, can on skeleton channel design.
Further, in one embodiment, device further includes telemetry circuit.Specifically, telemetry circuit is mounted on protective case
Cylinder in comprising power circuit, neutron measurement circuit, density measure circuit, excusing from death caliper logging circuit, azimuthal measurement circuit,
Acquire storage control circuit, transmission circuit.
Specifically, in one embodiment, power circuit has power supply for providing 2 tunnels ± 12v power supply and+5v power supply
Control switching circuit, power supply control switching circuit control the power supply of switching and each amplifying circuit between generator and 36V battery.
Specifically, in one embodiment, neutron measurement circuit is by preposition micro- charge amplifying circuit, second amplifying circuit, electricity
Source circuit and 4 channel neutron signal amplifying circuits composition, the tiny signal of 4 He3 pipes output form 3.3v after amplifying shaping
Pulse signal transmission to acquisition storage control circuit.High-tension circuit offer+1100v high voltage power supply.
Specifically, in one embodiment, density measure circuit is mainly made of pre-amplification circuit and high-tension circuit.It is preposition
The small pulse signal that amplifying circuit generates photomultiplier tube amplifies and is transferred to acquisition storage control circuit, high-voltage electricity
Road offer+1200v high voltage power supply.
Specifically, in one embodiment, ultrasound wave calliper logging circuit is used to convert hole diameter signal for ultrasonic signal.
Azimuthal measurement circuit utilizes orientation module real-time measurement bearing signal, calculates azimuth sector number locating for current instrument probe.
Specifically, in one embodiment, acquiring storage control circuit by Acquisition Circuit, control circuit and peripheral circuit group
At realization density spectrum stabilization high voltage control, the long short space of neutron counts, and calculates neutron porosity, calculates hole diameter, divides sector, storage
Etc. functions.
Specifically, in one embodiment, Acquisition Circuit acquires 16 different length of amplitude using 16 comparators in real time
8 non-spectrum stabilization window countings are stored in corresponding counter away from step-by-step counting, according to current sector number by source.
Specifically, in one embodiment, control circuit is made of single-chip computer and its peripheral circuit, data acquisition
Control, spectrum stabilization calculate and high pressure and attenuator factor control, data storage and read, with the work such as the communication of Other Instruments.
Specifically, in one embodiment, memory uses high temperature high reliability NAND type general-purpose storage, there is high/low temperature
The features such as lower fast reading and writing, high reliablity, function admirable, can long-term work in -45 DEG C~175 DEG C of adverse circumstances.
Specifically, in one embodiment, transmission circuit is used to carry out signal transmission between impulse generator, mainly have
LSN/SSN, SSD, LSD, CAL signal.
Specifically, in one embodiment, the acquisition process software of device mainly realizes two functions, first is that spectrum stabilization calculate and
High voltage control, second is that a point sector stores.Software on ground is mainly completed instrument communication, data acquisition and control, display, data and is located in advance
The functions such as reason, data management, data exchange and remote transmission.
Further, in one embodiment, device further includes safe pipe nipple, and safe pipe nipple is mounted on protection sleeve upper end.
Specifically, in one embodiment, safe pipe nipple is about 3m, the upper end of safe pipe nipple is stuck on slips when filling neutron source, installs source
There is 5 meters of safe distance afterwards, injury of the radioactive source to human body can be effectively reduced.
Further, in one embodiment, device further includes battery short section, and battery short section is mounted on protection sleeve lower end,
The lower end of battery short section is connected directly with impulse generator.
Next the specific structure of the device of an embodiment of the present invention is described in detail based on attached drawing.It needs exist for illustrating
, apparatus structure shown in the drawings is the structure of the device of an embodiment of the present invention, and it is practical new can not to limit this
All apparatus structures of type can be wanted based on the application right according to actual needs in the other embodiments of the utility model
The structure description asked, using the structure type different from attached drawing.Further, attached drawing is the internal junction for schematically describing device
Structure, size comparison's relationship in attached drawing can not correspond to device inner structure size in practical application scene completely.
As shown in Figure 1, in one embodiment, device includes: the neutron route bone being sequentially arranged from top to bottom along axis
Frame 1, with boring, compensated neutron measurement assembly, density lines skeleton 3, with boring, azimuthal density image measures assembly, ultrasonic wave hole diameter is surveyed
Measure assembly 4, orientation assembly 5；Accommodate the protection sleeve 6 of above-mentioned component.
Further, as shown in FIG. 2 and 3, in one embodiment, device further include: battery short section 7, safe pipe nipple
8.Battery short section 7 is mounted on protection 6 lower end of sleeve, is connected directly with impulse generator 9.Safe pipe nipple 8 is mounted on protective case
6 upper ends of cylinder, are about 3m, and the upper end of safe pipe nipple 8 is stuck on slips when filling neutron source, install the safe distance for having 5 meters behind source, can
To effectively reduce injury of the radioactive source to human body.
Further, as shown in Figure 1, in one embodiment, in order to obtain real-time wellbore while sub- density in the measurements
Diameter is measuring assembly lower part with brill azimuthal density image to compensate and correct according to borehole diameter to neutron measured value
Ultrasonic caliper logging assembly is installed in design.Ultrasonic caliper logging assembly is in drill collar particle size section surface in 180 ° of symmetrical installations two
The lead of a ultrasonic sensor 4, ultrasonic sensor 4 passes through conducting wire and ultrasonic caliper logging circuit connection.Ultrasonic caliper logging number
It is calculated according to for this measuring device and Other Instruments borehole compensation.
Further, as shown in Figure 1, in one embodiment, orientation assembly 5 is by aspect sensor and azimuthal measurement circuit group
At.For guarantee orientation consistency, aspect sensor, density short space crystal detection 15, density long space crystal detection 17, in
The center line requirement of sub- He3 pipe, ultrasonic sensor is located on the same line.Using azimuthal measurement circuit by wellbore stratum
It is divided into 16 sectors, one sector signals of every 22.5 ° of distribution utilize quarter in conjunction with collected formation lithology density data in this way
Device is spent, mutually decouples and forms focusing, to the color matching of measurement result interpolation, image synthesis is focused, simulation obtains reflecting down-hole formation
The density image of feature carries out the meter of stratigraphic dip for application Orientation density to realize the azimuthal density image measurement on stratum
The geosteerings work such as calculation, identification of bed boundary provides accurate data information.
Further, as shown in figure 4, in one embodiment, being mounted on neutron route bone with compensated neutron measurement assembly is bored
On frame 1, it is made of neutron source 10, neutron source short spaced detector 11, neutron source long spacing detector 12, neutron measurement circuit.
Neutron source 10 uses magnesium beryllium neutron source, and for long spacing detector 12 using 3 He3 pipes, 3 He3 pipes are symmetrical in 120 ° on drill collar
Distribution, source is away from for 608mm；Short spaced detector 11 is using 1 He3 pipe, and source is away from for 390mm.In order to improve the standard of neutron measurement
True property needs to shield neutron source room in drill collar so that neutron source chamber measurement side not with mud contacts, while in
Component outdoor installs mud ejector, closely short spaced detector 11 of neutron source 10, between the two also by polyethylene shield additional
13 separate.Neutron abrasion-proof cover plate 24 is being stamped with the top for boring compensated neutron measurement assembly.
Further, as shown in figure 5, in one embodiment, being mounted on density line with azimuthal density image measurement assembly is bored
On road skeleton 3, by gamma radiation source 14, short space crystal detection 15, short space photomultiplier tube 16, long space crystal detection
17, long space photomultiplier tube 18, density measure circuit 19 form, and with boring, azimuthal density image measurement is always integral to do shockproof place
Reason.Radioactive source 14 uses energy for the 137Cs gamma ray source of 0.662MeV, and source storehouse material is tungsten nickel iron alloy, and source collimates hole shape
For wedge shape, tilt angle is 60 °, fills the beryllium blend compounds sealing of low-density.Detector measurement high sensitivity is required in underground, it is short
Source is all made of ultrathin sodium iodide (NaI) crystal gamma sensor away from crystal detection 15, long space crystal detection 16, and source is away from respectively
For 165mm and 394mm, the harsh environments such as high temperature and pressure, HI high impact vibration are adapted to.Gamma radiation source 14 and crystal detection
Between separated by tungsten nickel iron alloy shield 20.Shield 20 is machined with low-density energy window, and communicates with collimating aperture.By gamma
Source 14 be placed in radioactive source room and double source away from crystal detection (short space crystal detection 15, long space crystal detection 17) together
It is mounted on inside density bearing shell 21, wellbore stratum is divided into 16 sectors using Orientation density measuring circuit 19, often
22.5 ° of distribution, one sector signals, in conjunction with collected formation lithology density data, to realize 360 ゜ of Orientation density on stratum
Imaging measurement.Arc-shaped spring piece 22 is installed between density bearing shell 21 and density lines skeleton 3, to realize density instrument
Borehole wall measurement is pasted, software compensation calculation method is recycled, reduces influence of the wellbore to measurement result.On density bearing shell 21
Portion is stamped density abrasion-proof cover plate 23, has long space window and short space window in the corresponding position portion of density abrasion-proof cover plate 23.
Further, as shown in fig. 6, in one embodiment, with boring azimuthal density image and compensated neutron integrated measuring
The telemetry circuit 2 of device is mainly by power circuit 25, neutron measurement circuit 26, density measure circuit 27, ultrasonic caliper logging electricity
Road 28, azimuthal measurement circuit 29, acquisition storage control circuit 30, transmission circuit 31 form.
Further, in one embodiment, power circuit 25 is for providing 2 tunnels ± 12v power supply and+5v power supply, and has
Power supply control switching circuit, power supply control switching circuit control the power supply of switching and each amplifying circuit between generator and 36V battery.
Further, in one embodiment, neutron measurement circuit 26 by amplifying circuit 261 (preposition micro- charge amplifying circuit,
Second amplifying circuit, 4 channel neutron signal amplifying circuits) and the composition of high-voltage power circuit 262.The offer of high-voltage power circuit 262+
1100v high voltage power supply.The tiny signal (long short space neutron signal) of 4 He3 pipe (neutron length He pipe 263) output is through amplifying
3.3v pulse signal transmission is formed after shaping to acquisition storage control circuit 30.
Further, in one embodiment, density measure circuit 27 is mainly by pre-amplification circuit 271 and density high-voltage electricity
Road 272 forms.Density high-tension circuit offer+1200v high voltage power supply controls high pressure according to the voltage signal of processing board.It is preposition
Amplifying circuit 271 by the small pulse signal generated from the photomultiplier tube of density length crystal 273, (believe by long short space density
Number) amplify and be transferred to acquisition storage control circuit 30 (output signal is less than 4V pulse signal).
Further, in one embodiment, ultrasound wave calliper logging circuit 28 includes signal converter 281, is used for well
The ultrasonic signal of diameter probe 282 is converted into hole diameter signal.Azimuthal measurement circuit 29 is believed using orientation module real-time measurement orientation
Number, calculate azimuth sector number locating for current instrument probe.
Further, in one embodiment, acquisition storage control circuit 30 is by Acquisition Circuit, control circuit and peripheral circuit
Composition realizes density spectrum stabilization high voltage control, and the long short space of neutron counts, and calculates neutron porosity, calculates hole diameter, point sector, deposits
The functions such as storage.Acquisition Circuit acquires the different long short space step-by-step counting of 16 amplitudes using 16 comparators in real time, according to working as
8 non-spectrum stabilization window countings are stored in corresponding counter by preceding sector number.Control circuit is by single-chip computer and its peripheral circuit group
At control, spectrum stabilization calculating and the high pressure and attenuator factor of data acquisition control, data store and read and other instrument
The work such as the communication of device.
Specifically, control circuit includes data processing unit 301 and memory 302.Data processing unit realizes neutron
Coincidence correction, neutron porosity calculating, density coincidence correction, density PHA analysis, density high pressure spectrum stabilization, neutron density well
The operations such as diameter orientation, temperature data coding.Memory realization divides sector store neutron SSN, LSN, density long space energy window and
Spectrum stabilization window, the counting of short space energy window and spectrum stabilization window and temperature, hole diameter, bearing signal.Memory uses high temperature high reliability
NAND type general-purpose storage has the characteristics that fast reading and writing under high/low temperature, high reliablity, function admirable, can long-term work-
In 45 DEG C~175 DEG C of adverse circumstances.
Further, in one embodiment, transmission circuit 31 includes communicating circuit 311, is used in read-write memory
Data simultaneously carry out signal transmission between impulse generator 9, to realize the data interaction with ground.Specifically, mainly passing through
LSN/SSN, SSD, LSD, CAL signal.
Further, in one embodiment, the acquisition process software of device mainly realizes two functions: first is that spectrum stabilization calculates
And high voltage control, second is that a point sector stores.It is pre- that software on ground mainly completes instrument communication, data acquisition and control, display, data
The functions such as processing, data management, data exchange and remote transmission.
Although embodiment disclosed in the utility model is as above, the content is only to facilitate understand that this is practical
Novel and use embodiment, is not intended to limit the utility model.Method described in the utility model can also have other more
Kind embodiment.Without departing substantially from the utility model in essence, those skilled in the art work as can be practical new according to this
Type makes various corresponding changes or deformation, but these corresponding changes or deformation all should belong to the claim of the utility model
Protection scope.
Claims (10)
1. a kind of measurement while drilling device, which is characterized in that described device includes:
Sleeve is protected, is process by an independent drill collar, its internal structure of the protection sleeve seal protection and device
Part；
Neutron circuit framework is mounted on the protection sleeve internal upper part；
Density lines skeleton is mounted on lower part in the protection sleeve, docks with the neutron circuit framework；
Assembly is measured with compensated neutron is bored, is mounted on the neutron circuit framework；
Assembly is measured with azimuthal density image is bored, is mounted on the density lines skeleton.
2. the apparatus according to claim 1, which is characterized in that it is described with bore compensated neutron measurement assembly include neutron source,
For disposing neutron source chamber, the neutron source short spaced detector, neutron source long spacing detector of the neutron source, in which:
The neutron source chamber is mounted on the neutron source short spaced detector top and closely the neutron source short spaced detector,
It is separated between the neutron source chamber and the neutron source short spaced detector by polyethylene shield；
The neutron source long spacing detector is mounted below the neutron source short spaced detector.
3. the apparatus of claim 2, it is characterised in that:
The neutron source chamber makees shielding processing to completely cut off contact of the neutron source chamber measurement side with mud；
The neutron source outdoor is equipped with mud ejector.
4. the apparatus according to claim 1, which is characterized in that it is described with bore azimuthal density image measurement assembly include gamma
Source, the radioactivity source chamber for placing gamma ray source, short space crystal detection, long space crystal detection, in which:
It is shielded between the radioactivity source chamber and the short space crystal detection, the long space crystal detection by tungsten nickel iron alloy
Body separates, and the tungsten nickel iron alloy shield is machined with low-density energy window, and the source collimating aperture phase with the radioactivity source chamber
It is logical.
5. device according to claim 4, which is characterized in that it is described with bore azimuthal density image measurement assembly further include use
In the density bearing shell for installing the short space crystal detection and the long space crystal detection, wherein held in the density
Spring leaf is installed between pressure shell and the density lines skeleton.
6. the apparatus according to claim 1, which is characterized in that described device further include ultrasonic caliper logging assembly and/or
Orientation assembly.
7. device according to claim 6, which is characterized in that it is described ultrasound caliper logging assembly include:
Ultrasonic sensor is mounted on the protection sleeve outer wall；
Ultrasonic wave hole diameter circuit board is mounted on the density lines skeleton, is located at described with brill azimuthal density image measurement
Assembly lower part.
8. device according to claim 6, which is characterized in that the aspect sensor of the orientation assembly, it is described with bore mend
Repay in neutron measurement assembly neutron He3 pipe, it is described with bore azimuthal density image measurement assembly in density detection crystal and
The center line of ultrasonic sensor in the ultrasound caliper logging assembly is located on the same line.
9. the apparatus according to claim 1, which is characterized in that described device further includes battery short section, the battery short section
It is mounted on the protection sleeve lower end, lower end and the impulse generator of the battery short section are connected directly.
10. device described according to claim 1~any one of 9, which is characterized in that described device further includes safe pipe nipple,
The safe pipe nipple is mounted on the protection sleeve upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821780505.4U CN209444324U (en) | 2018-10-31 | 2018-10-31 | A kind of measurement while drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821780505.4U CN209444324U (en) | 2018-10-31 | 2018-10-31 | A kind of measurement while drilling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111119872A (en) * | 2018-10-31 | 2020-05-08 | 中石化石油工程技术服务有限公司 | Measurement while drilling device |
| CN111119872B (en) * | 2018-10-31 | 2024-06-25 | 中石化石油工程技术服务有限公司 | Measurement while drilling device |
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Effective date of registration: 20220128 Address after: 100029 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Patentee after: SINOPEC OILFIELD SERVICE Corp. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee after: Sinopec Jingwei Co.,Ltd. Patentee after: Geological measurement and Control Technology Research Institute of Sinopec Jingwei Co.,Ltd. Address before: 100101 Beichen West Road, Chaoyang District, Beijing 8 Beichen world center, block A 703. Patentee before: SINOPEC OILFIELD SERVICE Corp. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee before: Sinopec Shengli Petroleum Engineering Co.,Ltd. Measurement and Control Technology Center While Drilling |
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