CN105867438B - A kind of laboratory experiment cake thickness precise controlling device - Google Patents
A kind of laboratory experiment cake thickness precise controlling device Download PDFInfo
- Publication number
- CN105867438B CN105867438B CN201610396500.0A CN201610396500A CN105867438B CN 105867438 B CN105867438 B CN 105867438B CN 201610396500 A CN201610396500 A CN 201610396500A CN 105867438 B CN105867438 B CN 105867438B
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- China
- Prior art keywords
- holder
- blade
- gear
- motor
- pedestal
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D5/00—Control of dimensions of material
- G05D5/02—Control of dimensions of material of thickness, e.g. of rolled material
- G05D5/03—Control of dimensions of material of thickness, e.g. of rolled material characterised by the use of electric means
Abstract
The present invention provides a kind of laboratory experiment cake thicknesses to finely control device, including holder, doctor assemblies, spiral micro actuator and imitation wellbore pedestal, doctor assemblies include motor, bull stick, blade and blade fastener, the shaft of motor is connected with bull stick, the axis of bull stick is overlapped with the axis of imitation wellbore pedestal, and blade is fixed on by blade fastener in bull stick；Spiral micro actuator includes coarse adjustment knob, accurate adjustment knob, planetary gear train, connecting rod, graduated scale and rack and pinion mechanism, the gear of rack and pinion mechanism is packaged in internal stent, rack is fixed on holder, graduated scale is connected with rack and graduated scale is in contact with the knife spine of blade, coarse adjustment knob is connected with external toothing, accurate adjustment knob connects sun gear, and connecting rod connects external toothing and gear；The present invention finely controls cake thickness using spiral micro actuator, using the drive of motor, improves the rate of laboratory removal false filter cake, improves experiment accuracy, finely control cake thickness.
Description
Technical field
The present invention relates to the mechanical devices that a kind of use for laboratory can finely control cake thickness, belong to petroleum drilling engineering skill
Art field.
Background technology
Well cementation second interface refers to the cement plane between cement sheath and stratum (or outer layer sleeve).The interlayer that oil field is encountered alters,
The outer bleed air water of pipe, annular space " sound changes ", one interface of well cementation " sound width " the problems such as all have with second interface sealing thrashing of cementing the well
Direct relationship.After the completion of well cementing operation, mud cake is clipped between cement mortar and stratum, and the quality of mud cake is directly related to well cementation two
The bonding quality at interface.So the research for second interface of cementing the well is a big emphasis of drilling engineering.
In order to further investigate well cementation second interface, professor Gu Jun develops the imitation wellbore preparation method (patent No.：
ZL200810047342.3), up to the present, laboratory have been carried out including drilling fluid, curing time, mud cake modifying agent,
Cake thickness etc. on well cementation second interface cementing strength influence experimental study, all experiments all be unable to do without prepare imitation wellbore and
Remove the process of false filter cake.At this stage, removal false filter cake in laboratory scrapes the mode of mud cake, which experiment using glass bar
It is less efficient, inevitably there is in uneven thickness, the rough problem in mud cake face generated by manual operation.
So far, many scholars are dedicated to the research of mud cake, and related patents are divided into two kinds, and one is mud under different condition
Cake is produced, and another kind is the measurement of cake thickness.Method involved by both types patent can not directly obtain tool
There is certain thickness mud cake, inevitably there is a problem of that conventional efficient is relatively low, experimental results error is larger.
Invention content
It is an object of the invention to overcome the deficiencies in the prior art, and provide a kind of based on Gu Jun professor's " imitation wellbore systems
The laboratory experiment of Preparation Method " patent finely controls device with cake thickness.
Technical solution is used by realizing the object of the invention, a kind of laboratory experiment cake thickness precise controlling device,
Including at least holder and the doctor assemblies being installed on holder, spiral micro actuator and imitation wellbore pedestal are installed on holder, scraped
Knife assembly, spiral micro actuator and imitation wellbore pedestal are sequentially installed on holder from top to bottom, the position of spiral micro actuator with scrape
The height of blade is corresponding in knife assembly；The doctor assemblies include motor, bull stick, blade and blade fastener, motor
Shaft and bull stick be connected, the axis of bull stick is overlapped with the axis of imitation wellbore pedestal, is provided in the axial direction with and is run through turn in bull stick
The insert groove of bar, blade are fixed on by blade fastener in insert groove；The spiral micro actuator includes coarse adjustment knob, accurate adjustment rotation
The gear of button, planetary gear train, connecting rod, graduated scale and rack and pinion mechanism, rack and pinion mechanism is packaged in internal stent, rack
The knife spine being fixed in the mounting hole opened up in the horizontal direction on holder and with blade is opposite, graduated scale and rack be connected and
Graduated scale is in contact with the knife spine of blade, and the planetary gear train is made of external toothing, sun gear, planetary gear and planet carrier, coarse adjustment
Knob and external toothing are connected, and accurate adjustment knob connects sun gear, one end of connecting rod protrude from holder and be fixed on external toothing,
The other end is located at internal stent and is connect with gear, and sun gear and planetary gear are connect by planet carrier with gear, planet carrier
Coordinate with gear clearance, scale is equipped on the outer surface of coarse adjustment knob and accurate adjustment knob.
The motor is connect by motor fixation kit with holder, the motor fixation kit include motor fixed cylinder,
Cross bar and threaded fastener, motor are installed in motor fixed cylinder, and one end of cross bar is connected with the side of motor fixed cylinder, is another
One end is fixed on by threaded fastener on holder.
Sliding slot is provided in the axial direction on the holder, cross bar is equipped with the cunning to match with sliding slot close to the end of holder
Block, sliding block constitute sliding pair with sliding slot.
Holder is equipped with pedestal, and pedestal is located at the underface of imitation wellbore pedestal.
The planet carrier is in herringbone, including sun wheel support and L-type planetary carrier, the both ends difference of sun wheel support
In the mounting hole that sun gear and gear centre open up and with mounting hole clearance fit, an end cap of L-type planetary carrier
It is connected on sun wheel support and with the center of the cooperation of sun gear standoff gap, the other end and planetary gear.
The imitation wellbore pedestal is connected with holder, and the endoporus aperture of imitation wellbore pedestal is equal to the outer diameter of imitation wellbore.
The connecting rod is constituted in bending, by 3 sections of folding arms, and two sections of horizontal folding arms are individually fixed in the both ends of vertical folding arm
And positioned at the both sides of vertical folding arm, wherein one section of horizontal folding arm is located at outside holder and is fixed on external toothing, another section of water
Flat-folded arm is installed in holder and is connect with gear.
As shown from the above technical solution, laboratory experiment cake thickness precise controlling apparatus main body provided by the invention includes
Four parts：Holder, doctor assemblies, spiral micro actuator and imitation wellbore pedestal, wherein 1, holder, is the integrated support knot of device
Structure, while limiting the motion track of doctor assemblies；2, doctor assemblies, for striking off false filter cake, including motor, bull stick, blade
And blade fastener, bull stick by motor drive, be used for fixed blade, bull stick drives blade rotation, the blade rod axis that rotates to do
Fixed-axis rotation strikes off the false filter cake in its radius of gyration, to obtain the mud cake of setting thickness；3, spiral micro actuator,
The radius of gyration for accurately adjusting blade, including coarse adjustment knob, accurate adjustment knob, planetary gear train, connecting rod, graduated scale and gear
Rackwork is internally integrated planetary gear train, and the sun gear and external toothing of planetary gear train have a tooth ratio, to realize blade rotation
The coarse adjustment and accurate adjustment of radius, planetary gear train transmit torque with rack and pinion mechanism by connecting rod, and coarse adjustment knob is solid with external toothing
Even, accurate adjustment knob connects sun gear, and coarse adjustment knob and accurate adjustment knob are torque input end, and connecting rod connects external toothing and tooth
Wheel, external toothing are torque output, and planet carrier realizes the connection between sun gear, planetary gear and gear, planet carrier and sun gear
It being all made of clearance fit with gear, forms two groups of revolute pairs, i.e. planet carrier only plays the role of supporting sun gear and planetary gear, and
Do not transmit torque, the torque of external toothing output acts on the gear of rack and pinion mechanism, by rack and pinion mechanism by torque
It is converted into the movement of rack in the horizontal direction, rack is opposite with the knife spine of blade, and rack is connected with graduated scale, graduated scale and blade
Knife spine be in contact, rack adjusts the radius of gyration of blade by graduated scale acts on blade, passes through the length on graduated scale
Degree scale can directly acquire the radius of gyration of blade；4, imitation wellbore pedestal, it is special with Gu Jun professors " imitation wellbore preparation method "
Imitation wellbore prepared by profit matches, and for placing imitation wellbore, mud cake is located in imitation wellbore.
Motor is connect by motor fixation kit with holder, and motor is positioned in motor fixed cylinder, solid by motor
Safety barrel installs motor, haves no need to change the self structure of motor, opens up sliding slot on holder in an axial direction, cross bar is close to holder
End is equipped with the sliding block that matches with sliding slot, and sliding block constitutes sliding pair with sliding slot, by sliding block and sliding slot restrictions motor around
The rotational freedom of holder, rotates when preventing motor from moving up and down, and ensures the degree of regulation of blade rotation radius；The void struck off
Mud cake avoids false filter cake from polluting experimental bench by being set to the pedestal access of the underface of imitation wellbore pedestal.
Compared with existing glass bar scrapes mud cake technology, laboratory experiment provided by the invention is finely controlled with cake thickness and is filled
It sets and has the advantages that：
1, the present invention finely controls cake thickness using spiral micro actuator, changes traditional glass stick and scrapes mud cake not
Uniform defect improves the rate of laboratory removal false filter cake, it is accurate to greatly improve experiment using the drive of motor
Degree, can finely control cake thickness, and the Scientific Research Problem that cake thickness is related to for research provides facility.
2, laboratory experiment provided by the invention cake thickness finely controls device, and each part-structure that forms is simple, is easy to
Operation, precision is higher, highly reliable, and the imitation wellbore that device manufacture craft is simple and practicable and professor Gu Jun develops prepares dress
It sets and is used cooperatively, there is wide popularizing application prospect.
Description of the drawings
Fig. 1 is the structural schematic diagram that laboratory experiment cake thickness provided by the invention finely controls device.
Fig. 2 is the front view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is that Fig. 1 removes the vertical view after motor.
Fig. 5 is the external structure of spiral micro actuator.
Fig. 6 is the internal structure chart of spiral micro actuator.
Wherein, 1- holders, 2- doctor assemblies, 3- spiral micro actuators, 4- imitation wellbore pedestals, 5- motor fixation kits, 6-
Pedestal, 7- sliding slots, 8- cross bars, 9- graduated scales, 10- accurate adjustment knobs, 11- coarse adjustment knobs, 12- motor, 13- blades, 14- turn
Bar, 15- blade fasteners, 16- threaded fasteners, 17- motor fixed cylinders, 18- insert grooves, 19- scales, 20- external toothings, 21-
Sun gear, 22- planetary gears, 23- connecting rods, 24- gears, 25- racks, 26- planet carriers, 261- sun wheel supports, 262-L type rows
Star-wheel holder.
Specific implementation mode
The present invention is illustrated in detail with reference to the accompanying drawings and examples, present disclosure is not limited to following
Embodiment.
Laboratory experiment provided by the invention with cake thickness finely control device, structure as shown in Figure 1, including holder 1,
Doctor assemblies 2, spiral micro actuator 3, imitation wellbore pedestal 4, motor fixation kit 5 and pedestal 6, doctor assemblies 2, spiral micro actuator
3, imitation wellbore pedestal 4 and pedestal 6 are sequentially installed on holder 1 from top to bottom, and 6 size of pedestal is 200*120*10mm, holder 1
A diameter of 10mm, Design of length value are 600mm, and pedestal 6 is located at the underface of imitation wellbore pedestal 4, the imitation wellbore pedestal 4
It is connected with holder 1,4 height of imitation wellbore pedestal is 50mm, internal diameter is 100mm (outer diameter of imitation wellbore is 100mm), wall thickness is
10mm, apart from base upper surface it is 150mm, motor fixation kit 5 is used to support the motor 12 in doctor assemblies 2, and spiral is micro-
Adjust the position of device 3 corresponding with the height of blade in doctor assemblies 13；
Referring to Fig. 2 to Fig. 4, the doctor assemblies 2 include motor 12, bull stick 14, blade 13 and blade fastener 15, electricity
The shaft of motivation 12 is connected with bull stick 14, and the axis of bull stick 14 is overlapped with the axis of imitation wellbore pedestal 4, is opened in an axial direction in bull stick
Equipped with the insert groove 18 through bull stick, blade is fixed on by blade fastener in insert groove 18, the long 120mm of blade, width,
The setting value of 25mm, edge tilted angle are 45 °, and insert bottom is 20mm apart from bull stick bottom, to ensure fine tuning work in next step
Be smoothed out；
Referring to Fig. 2, the motor fixation kit 2 includes motor fixed cylinder 17, cross bar 8 and threaded fastener 16, motor
12 are installed in motor fixed cylinder 17, and one end of cross bar 8 is connected with the side of motor fixed cylinder 17, the other end passes through screw threads for fastening
Part 16 is fixed on holder 1, and sliding slot 7 is provided in the axial direction on holder 1, and cross bar is equipped with and sliding slot phase close to the end of holder
The sliding block matched, sliding block and sliding slot 7 constitute sliding pair, and the length of sliding slot is 300mm, width 6mm, and sliding slot bottom end is apart from imitation wellbore
The top surface vertical range of pedestal 4 is 100mm, apart from 6 bottom surface of pedestal (experimental bench) 310mm；
Referring to Fig. 5 and Fig. 6, the spiral micro actuator includes coarse adjustment knob 11, accurate adjustment knob 10, planetary gear train, connecting rod
23, graduated scale 9 and rack and pinion mechanism, the gear 24 of rack and pinion mechanism is packaged in inside holder 1, rack 25 is fixed on holder
On it is in the mounting hole that opens up in the horizontal direction and opposite with the knife spine of blade 13, graduated scale 9 is connected with rack and graduated scale 9
It is in contact with the knife spine of blade, the planetary gear train is made of external toothing 20, sun gear 21, planetary gear 22 and planet carrier 26, slightly
Tune knob 11 is connected with external toothing 20, the connection sun gear 21 of accurate adjustment knob 10, on the outer surface of coarse adjustment knob and accurate adjustment knob
Equipped with scale 19, the connecting rod 23 is constituted in bending, by 3 sections of folding arms, and two sections of horizontal folding arms are individually fixed in vertical folding arm
Both ends and positioned at vertical folding arm both sides, wherein one section of horizontal folding arm be located at holder 1 outside and be fixed on external toothing 20,
Another section of horizontal folding arm is installed in holder 1 and is connect with gear 24, and sun gear and planetary gear pass through planet carrier and gear
Connection, the planet carrier 26 are in herringbone, including sun wheel support 261 and L-type planetary carrier 262, and the two of sun wheel support
End be located in the mounting hole that sun gear and gear centre open up and with mounting hole clearance fit, L-type planetary carrier
One end is placed on sun wheel support and is connected with the center of the cooperation of sun gear standoff gap, the other end and planetary gear.
The laboratory experiment finely controlled with cake thickness device and Gu Jun professor patent of invention " a kind of imitation wellbore and its
The imitation wellbore that preparation method " (patent No. ZL200810047342.3) provides is used cooperatively, and concrete operation step is as follows：
(1) imitation wellbore with specific permeability and porosity is prepared first, seals one end of imitation wellbore, by drilling well
Liquid is placed in a period of time in imitation wellbore, and simulation drilling fluid obtains the mud with unknown thickness to the static filtration of the imitative ground borehole wall
Cake, and imitation wellbore is put into imitation wellbore pedestal 4；
(2) and then by the blade 13 cleaned up it is packed into insert groove 18, unclamps the threaded fastener 16 of motor 12, it will
Motor fixation kit 5 and doctor assemblies 2 move down a distance and fixation jointly, it is therefore an objective to make the radius of turn of blade 13 can
With adjusted；
(3) from the initial position adjusting knob of spiral micro actuator 3, first coarse adjustment knob 11 is used to adjust, it is fast close to specified mud cake
It when thickness, uses accurate adjustment knob 10 instead and is adjusted to assigned scale, achieve the purpose that adjust blade radius of turn by graduated scale 9；
(4) good blade 13 to be adjusted and after fixing, spiral micro actuator is restored to original position, by motor fixation kit 5 and is scraped
Knife assembly 2 is jointly lower to arrive 7 end of sliding slot and fixation, and beaker is placed on pedestal 6, motor 12 is opened, passes through motor 12
The mud cake of appointed thickness is made in low speed rotation, the rotation with cutting blade 13, and the false filter cake of removal is fallen into beaker, prevents drilling well
Liquid pollution test stand；
(5) after motor 12 rotates 15 seconds, motor 12 is closed, to prevent blade in disassembly process from touching in mud cake
Wall first unclamps the blade fastener 15 of blade 13, blade 13 is moved a distance to bull stick center, is ensureing that blade 13 will not
After encountering mud cake, the threaded fastener 16 of motor 12 is unclamped, by 2 common upward sliding of motor fixation kit 5 and doctor assemblies,
After imitation wellbore is left in 2 bottom of bull stick completely, fixed motor fixation kit 5 and doctor assemblies 2 unload blade 13 down cleaning
Totally, next use is waited for；
(6) imitation wellbore is taken out, a sample is completed.
Claims (6)
1. a kind of laboratory experiment finely controls device with cake thickness, including at least holder and the scraper group being installed on holder
Part, it is characterised in that：Spiral micro actuator and imitation wellbore pedestal, doctor assemblies, spiral micro actuator and imitative ground are installed on holder
Pit shaft pedestal is sequentially installed on holder from top to bottom, and the position of spiral micro actuator is opposite with the height of blade in doctor assemblies
It answers；The doctor assemblies include motor, bull stick, blade and blade fastener, and shaft and the bull stick of motor are connected, bull stick
Axis is overlapped with the axis of imitation wellbore pedestal, and the insert groove through bull stick is provided in the axial direction in bull stick, and blade passes through blade
Fastener is fixed in insert groove；The spiral micro actuator includes coarse adjustment knob, accurate adjustment knob, planetary gear train, connecting rod, scale
Ruler and rack and pinion mechanism, the gear of rack and pinion mechanism is packaged in internal stent, rack is fixed on holder in the horizontal direction
Knife spine in the mounting hole opened up and with blade is opposite, and graduated scale is connected with rack and graduated scale connects with the knife spine of blade
It touches, the planetary gear train is made of external toothing, sun gear, planetary gear and planet carrier, and the planet carrier is in herringbone, including the sun
The both ends of wheel support and L-type planetary carrier, sun wheel support are located in the mounting hole that sun gear and gear centre open up
And be placed on sun wheel support with one end of mounting hole clearance fit, L-type planetary carrier and with sun gear standoff gap
The center of cooperation, the other end and planetary gear is connected, and coarse adjustment knob is connected with external toothing, and accurate adjustment knob connects sun gear, connecting rod
One end protrude from holder and be fixed on external toothing, the other end is located at internal stent and is connect with gear, sun gear and
Planetary gear is connect by planet carrier with gear, and planet carrier coordinates with gear clearance, the outer surface of coarse adjustment knob and accurate adjustment knob
On be equipped with scale.
2. laboratory experiment according to claim 1 finely controls device with cake thickness, it is characterised in that：The motor
It is connect with holder by motor fixation kit, the motor fixation kit includes motor fixed cylinder, cross bar and threaded fastener, electricity
Motivation is installed in motor fixed cylinder, and one end of cross bar is connected with the side of motor fixed cylinder, the other end passes through threaded fastener
It is fixed on holder.
3. laboratory experiment according to claim 2 finely controls device with cake thickness, it is characterised in that：On the holder
It is provided in the axial direction with sliding slot, cross bar is equipped with the sliding block to match with sliding slot close to the end of holder, and sliding block is constituted with sliding slot and slided
Dynamic pair.
4. laboratory experiment according to claim 1 finely controls device with cake thickness, it is characterised in that：Holder is equipped with
Pedestal, pedestal are located at the underface of imitation wellbore pedestal.
5. laboratory experiment according to claim 1 finely controls device with cake thickness, it is characterised in that：The imitative ground well
Cylinder pedestal is connected with holder, and the endoporus aperture of imitation wellbore pedestal is equal to the outer diameter of imitation wellbore.
6. laboratory experiment according to claim 1 finely controls device with cake thickness, it is characterised in that：The connecting rod
It is constituted in bending, by 3 sections of folding arms, two sections of horizontal folding arms are individually fixed in the both ends of vertical folding arm and positioned at vertical folding arm
Both sides, wherein one section of horizontal folding arm is located at outside holder and is fixed on external toothing, another section of horizontal folding arm is installed in holder
And it is connect with gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610396500.0A CN105867438B (en) | 2016-06-06 | 2016-06-06 | A kind of laboratory experiment cake thickness precise controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610396500.0A CN105867438B (en) | 2016-06-06 | 2016-06-06 | A kind of laboratory experiment cake thickness precise controlling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105867438A CN105867438A (en) | 2016-08-17 |
| CN105867438B true CN105867438B (en) | 2018-09-04 |
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ID=56676018
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610396500.0A Expired - Fee Related CN105867438B (en) | 2016-06-06 | 2016-06-06 | A kind of laboratory experiment cake thickness precise controlling device |
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| CN (1) | CN105867438B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9417754B2 (en) | 2011-08-05 | 2016-08-16 | P4tents1, LLC | User interface system, method, and computer program product |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3281599A (en) * | 1959-08-25 | 1966-10-25 | Chevron Res | Mud-cake-thickness measuring device for gamma-gamma density logger |
| CN1072497A (en) * | 1991-11-19 | 1993-05-26 | 西安石油学院 | Mud cake thickness measuring apparatus |
| CN2441113Y (en) * | 2000-09-14 | 2001-08-01 | 西南石油学院 | Device for measuring thickness of filtering cake for drilling fluid |
| CN101250999A (en) * | 2008-04-16 | 2008-08-27 | 中国地质大学（武汉） | Terra-imitating borehole and manufacture method thereof |
-
2016
- 2016-06-06 CN CN201610396500.0A patent/CN105867438B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3281599A (en) * | 1959-08-25 | 1966-10-25 | Chevron Res | Mud-cake-thickness measuring device for gamma-gamma density logger |
| CN1072497A (en) * | 1991-11-19 | 1993-05-26 | 西安石油学院 | Mud cake thickness measuring apparatus |
| CN2441113Y (en) * | 2000-09-14 | 2001-08-01 | 西南石油学院 | Device for measuring thickness of filtering cake for drilling fluid |
| CN101250999A (en) * | 2008-04-16 | 2008-08-27 | 中国地质大学（武汉） | Terra-imitating borehole and manufacture method thereof |
Non-Patent Citations (2)
| Title |
|---|
| Haiyang Hao，等.Comparative study on cementation of cement-mudcake interface with and without mud-cake-solidification-agents application in oil & gas wells.《Journal of Petroleum Science and Engineering》.2016,第147卷第143-153页. * |
| 养护时间和泥饼改性剂对固井二界面胶结强度的影响;张玉广，等;《油田化学》;20100625;第27卷(第2期);第124-127页 * |
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