CN203626819U - Caliper arm pushing and contracting device for dual caliper - Google Patents
Caliper arm pushing and contracting device for dual caliper Download PDFInfo
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- CN203626819U CN203626819U CN201320881350.4U CN201320881350U CN203626819U CN 203626819 U CN203626819 U CN 203626819U CN 201320881350 U CN201320881350 U CN 201320881350U CN 203626819 U CN203626819 U CN 203626819U
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Abstract
The utility model discloses a caliper arm pushing and contracting device for a dual caliper. The caliper arm pushing and contracting device is suitable for logging instruments for measuring the borehole diameters close to the well walls of horizontal wells, highly-deviated wells, conventional wells and the like. According to the dual caliper, borehole diameter measuring arms can be effectively attached to a well wall tightly under the action of the pushing force of a main pushing spring and the support force of a support pressure spring, thus borehole diameter measuring signals are accurate and reliable, and the logging requirements of horizontal wells, conventional wells and other wells can be met. Four groups of measuring arms, a main push-pull rod, three groups of springs, four groups of rotating blocks, one group of limiting devices and corresponding connectors construct a split pushing and contracting device. The device is different from the conventional non-linkage pushing system consisting of one pull rod, one or more groups of pushing arms and one or more groups of springs. The device is reasonable in overall structural design, the performance of the instrument is improved, the data quality of the dual caliper for logging close to well walls can be improved, the use performance of the pushing and contracting device is enhanced, and well logging data acquired during logging of the dual caliper are accurate and reliable.
Description
Technical field
The utility model relates to having of petroleum exploration logging technical field, particularly a kind of oil well logging to be pushed away the double well diameter measuring instrument hole diameter arm of receiving function contact well logging and pushes away receiving apparatus.
Background technology
Caliper logging tool is that conventional logging one of must survey project, is with a wide range of applications.The caliper logging tool of prior art is under the effect of spring, to make hole diameter arm open to be close to the borehole wall to measure, its general two gage beams or three gage beam of adopting, even if being also potentiometer, four measuring arm is cascaded, when measurement, a hole diameter arm changes and can change by another hole diameter arm of drive, the CAL of measuring is the average of whole gage beams, the gage beam that can not distinguish which direction is large to the contribution of CAL, the gage beam of which direction is little to the contribution of CAL, and the precision of measurement is relatively low.The measuring system of existing caliper is mainly made up of parts such as gage beam, main assemblage of spring, pull bar, measurement body structure, secondary spring and auxiliary connecting rods.Caliper logging arm push away receipts, provide DC voltage to motor part by ground, be responsible for hole diameter arm and open and be affixed to the borehole wall and measure.
At present, caliper logging tool mainly relies on big spring reinforcing to push away receipts to hole diameter arm, and due to the discontinuity equalization of hole diameter arm, in the time of major diameter, support force is bigger than normal, and support force becomes too little in the time of minor diameter, like this smoothness of instrument overall operation is had a certain impact.As shown in Figure 5, hole diameter arm intersection wearing and tearing also can be more serious, causes the hole diameter arm borehole wall of can not well fitting, and directly affected the logging quality of instrument.
Utility model content
The purpose of this utility model is that the hole diameter arm in order to make double well diameter measuring instrument can effectively fit that the borehole wall improves logging data quality and a kind of novel double well diameter measuring instrument hole diameter arm that designs pushes away receiving apparatus.When fundamentally solving existing caliper logging tool and being subject to pushing structure restriction work, gage beam discontinuity equalization causes hole diameter arm can not effectively be adjacent to the problem that the borehole wall is measured, simultaneously, the utility model hole diameter arm pushes away receiving apparatus stable and reliable operation, guarantees the accurate of measurement.
The technical solution of the utility model is: a kind of double well diameter measuring instrument hole diameter arm pushes away receiving apparatus, comprise test body, tubular connector, main transmission bar and sealing lower contact, described test body is connected in sequence by gage beam assembly, coupling assembling, braced structures, spring system, limit body, and forms together the machine driving that is fixedly connected with and interlocking mechanism structure not mutually; Main transmission bar in described tubular connector is fastenedly connected successively through braced structures, spring system, limit body and the sealing lower contact of the setting of described test body.
Described gage beam assembly is four groups of gage beams of lantern body formula, every group of gage beam comprises main measuring staff, secondary measuring staff, coupling assembling, described main measuring staff one end is articulated with described tubular by steady pin and connects body wall upper end, the master that the main measuring staff other end is provided with coupling assembling is revolved joint piece, described secondary measuring staff one end is articulated with described tubular and connects body wall lower end, the other end is set in the secondary measuring staff that includes secondary spring and withstands described secondary spring, the pair that coupling assembling is installed in the suit end of described secondary measuring staff is revolved joint piece, described main measuring staff and secondary measuring staff utilize described coupling assembling master, pair revolve joint piece and connecting pin hinged,
Described coupling assembling is connected in by connecting pin on the main measuring staff and secondary measuring staff of gage beam, described coupling assembling is revolved joint piece and is formed by main joint piece and the pair of revolving, described master revolves joint piece and secondary to revolve joint piece be respectively that a upper surface is a microscler of oblique round slip surface, there is a rectangular recess center that described master is revolved the joint oblique round slip surface of piece one end, and there is corresponding fixing hole at the main front end that revolves joint piece central recess, it is straight end face that master is revolved the oblique round slip surface other end of joint piece, main revolve the joint straight end face of piece and one end of the main measuring staff of gage beam assembly hinged, there is the rectangle plush copper of certain length the center that described pair is revolved the joint oblique round slip surface of piece one end, and there is symmetrical center hole at Fu Xuanjiekuai center plush copper front end, it is also straight end face that pair is revolved the joint piece other end, pair revolves the straight end face of joint piece and one end of the secondary measuring staff of gage beam assembly is hinged, described master revolves joint piece and secondary connection of revolving joint piece is pair to be revolved to the square plush copper of joint block length insert main revolving in joint block length square groove, inserting main fixing hole and the secondary center hole that revolves joint piece that revolves joint piece by connecting pin is again fixed, main measuring staff is fixedly connected with secondary measuring staff.
Described braced structures is arranged at tubular connector front end inside, and described braced structures has four groups of support bars, and described support bar is divided into the first support bar and the second support bar, and described the first support bar and the second support bar are linked as one by positive left-hand thread swivel nut screw thread; Described the first post upper is fixedly connected with by steady pin with the main measuring staff of gage beam one end, and described the second support bar lower end is hinged by the stage clip drive link of connecting pin and stage clip assembly.
Described spring system is connected in sequence by stage clip assembly and main spring assembly;
Described stage clip assembly is four groups of spring bodies corresponding in tubular connector, every group of spring body is by cocking lever, spring, compression spring sleeve, making leaf spring is connected in sequence, the cocking lever of described spring body is provided with positive stop lug boss, spring is withstood in described positive stop lug boss one end, described spring one end relies on by making leaf spring on the end face of the first main spring frame of described main spring assembly, the other end lean with described positive stop lug boss on, the opposite side body of rod of described cocking lever positive stop lug boss stretch out described compression spring sleeve and utilize alignment pin hinged with support bar place, in described compression spring sleeve, there are four groups of springs, and through the fixing encapsulation of four groups of springs and making leaf spring one end, the other end of making leaf spring lean with described main spring assembly front end face on,
Described main spring assembly by the first main spring frame, main spring, promote mainly pull bar, the second main spring frame is connected in sequence, described main spring assembly utilizes first, second main spring frame to be supported between described stage clip assembly and stop collar; The described pull bar of promoting mainly is through the yellow assembly of the pressure in described tubular connector front end, main spring assembly, described in promote mainly pull bar and be connected in described compression spring sleeve by key and be fixed together.
Described limit body comprises stop collar, gag lever post, described stop collar front end and the second main spring frame join and withstand described main spring assembly, stop collar rear end and gag lever post front end join, described gag lever post is to be enclosed within on lower main transmission bar, the front end of described gag lever post withstands on stop collar rear end, sealing lower contact place is inserted in gag lever post rear end, and the both ends of the surface of limit body are limited in respectively main spring assembly and sealing lower contact place, and limit body front end withstands main spring assembly.
The technique effect that the utility model double well diameter measuring instrument hole diameter arm pushes away receiving apparatus is, when instrument well logging, gage beam can freedom retractable with well radius variations, each gage beam self-movement, and transfer is effective, can reflect strictly according to the facts that borehole wall diameter changes.In addition, adopt spring limit body, gag lever post withstands stop collar, can be spring system initialization state is provided, make main spring just form certain spring pressure in initial trip segment, so just guaranteed gage beam in during well logging always stressed evenly, thereby guaranteed stability and the reliability of instrument work, this is also different from general four arm wells through pushing away receiving apparatus main spring system and main transmission bar directly joins.Gage beam coupling assembling (master revolves joint piece and pair is revolved joint piece) adopts the contiguous block mode of round slip surface simultaneously, effectively degree of reducing wear of its round slip surface, the increase of gage beam and borehole wall binding face, guarantees the instrument borehole wall of can better fitting in during well logging.This hole diameter arm pushes away receiving apparatus and belongs to four arm lantern body formula structures, the beveled structure of this quasi-instrument of different from the past other, be applicable to the caliper logging of horizontal well, high angle hole, opening gage beam instrument can move up and down, and meets double well diameter measuring instrument effectively demand of tight contact well logging of its caliper logging arm in well.
Accompanying drawing explanation
Fig. 1 is the utility model double well diameter measuring instrument overall package schematic diagram.
Fig. 2 is that the utility model double well diameter measuring instrument hole diameter arm pushes away receiving apparatus schematic diagram.
Fig. 3 is that the utility model double well diameter measuring instrument hole diameter arm pushes away the spacing connection diagram of receiving apparatus medi-spring.
Fig. 4 is that the utility model double well diameter measuring instrument hole diameter arm pushes away and in receiving apparatus, revolves joint piece connection diagram.
Fig. 5 is that prior art caliper hole diameter arm pushes away hole diameter arm syndeton schematic diagram in receipts system.
In figure: 1 tubular connector, 2 steady pins, 3 main measuring staffs, 4 connecting pins, 5 first support bars, 6 positive left-hand thread swivel nuts, 7 second support bars, 8 first connecting pins, 9 cocking levers, 10 compression spring sleeve, 11 springs, 12 second connecting pins, 13 making leaf springs, 14 first main spring framves, 15 main springs, 16 second main spring framves, 17 promote mainly pull bar, the 18 main joint pieces that revolve, 19 connecting pins, 20 pairs are revolved joint piece, 21 connecting pins, 22 secondary measuring staffs, 23 secondary springs, 24 connecting pins, 25 stop collars, 26 gag lever posts, 27 times main transmission bars, 28 sealing lower union joints, main transmission bar on 29, 30 tubular connector lower ends.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As Figure 1-4, to push away receiving apparatus be that having of a kind of petroleum exploration field pushes away the double well diameter measuring instrument hole diameter arm of receiving function contact well logging and push away receiving apparatus to double well diameter measuring instrument hole diameter arm of the present utility model.Its structure is composed as follows: mainly comprise test body, tubular connector, main transmission bar and sealing lower contact, described test body is connected in sequence by gage beam assembly, coupling assembling, braced structures, spring system, limit body, and forms together and be fixedly connected with machine driving and interlocking mechanism structure not mutually.
Upper main transmission bar 29 in described tubular connector 1 is fastenedly connected successively through braced structures, spring system and described limit body and the sealing lower contact 28 of the setting of described test body.Upper main transmission bar 29 at tubular connector 1 Inner Front End inner and with promote mainly pull bar 17 and be connected, promote to promote mainly pull bar 17 and move, promote mainly pull bar 17 and be fastenedly connected through stage clip assembly, main spring assembly, limit body and underdrive bar 27 in tubular connector 1 successively.
Wherein: gage beam assembly is four groups of gage beams of lantern body formula, every group of gage beam is mainly by main measuring staff 3, coupling assembling (the main joint piece 18 that revolves, pair is revolved joint piece 20), secondary measuring staff 22 is connected in sequence, main measuring staff 3 one end are articulated with on tubular connector 1 wall by steady pin 2, it is hinged that main measuring staff 3 other ends and master are revolved joint piece 18, secondary measuring staff 22 one end are articulated with tubular and connect body wall lower end 30, secondary measuring staff 22 other ends are set in the secondary measuring staff 22 that includes secondary spring 23 and withstand described secondary spring 23, pair is revolved to joint piece 20 front end plush coppers and insert main revolving in joint piece 18 front end grooves, by connecting pin 19, main measuring staff 3 and secondary measuring staff 22 are fixed to connection.Main revolve joint piece 18 and revolve that joint piece 20 surfaces, joints are round and smooth and surface area large (compare in the past hole diameter instrument gage beam be connected face), the large stress surface of its contact surface is just large, can reduce the contact surface of surface abrasion and increase hole diameter arm and the borehole wall.
Specifically, described master revolves joint piece 18 and secondary to revolve joint piece 20 be respectively that a upper surface is a microscler of oblique round slip surface, there is a rectangular recess center that described master is revolved joint piece 18 oblique round slip surface one end, and there is corresponding fixing hole at the main front end that revolves joint piece 18 central recess, it is straight end face that master is revolved the oblique round slip surface other end of joint piece 18, main revolve the joint straight end face of piece and one end of the main measuring staff 3 of gage beam assembly hinged, there is the rectangle plush copper of certain length the center that described pair is revolved joint piece 22 oblique round slip surface one end, and there is symmetrical center hole at Fu Xuanjiekuai center plush copper front end, it is also straight end face that pair is revolved joint piece 22 other ends, pair revolves the straight end face of joint piece and one end of the secondary measuring staff 22 of gage beam assembly is hinged, described master revolves joint piece 18 and secondary connection of revolving joint piece 22 is pair to be revolved to the square plush copper of joint block length insert main revolving in joint block length square groove, inserting main fixing hole and the secondary center hole that revolves joint piece that revolves joint piece by connecting pin 19 is again fixed, main measuring staff is fixedly connected with secondary measuring staff.
The first support bar 5 of described support bar is linked as one with the second support bar 7 by positive left-hand thread swivel nut 6 and is connected with cocking lever 9 one end in compression spring sleeve 10, one end of the main measuring staff 3 of the first post upper and gage beam is fixed on tubular connector 1 outer wall by steady pin 2, and the second support bar 7 lower ends are hinged by connecting pin 8 and cocking lever 9.
Described spring system is connected in sequence by stage clip assembly and main spring assembly.
Stage clip assembly is four groups of spring bodies corresponding in tubular connector, every group of spring body is by cocking lever 9, spring 11, compression spring sleeve 10, making leaf spring 13 is connected in sequence, cocking lever 9 limited location boss, spring 11 is withstood in positive stop lug boss one end, spring 11 one end lean by making leaf spring 13 on the end face of the first main spring frame 14, spring 11 other ends lean with positive stop lug boss on, the opposite side body of rod of cocking lever 9 positive stop lug boss stretch out compression spring sleeve 10 and utilize connecting pin 8 hinged with the second support bar 7 junctions, compression spring sleeve 10 encapsulates through four groups of springs 11 and with making leaf spring 13 one end are fixing, the other end of making leaf spring 13 lean with the first main spring frame 14 end faces on.
Main spring assembly by the first main spring frame 14, main spring 15, promote mainly pull bar 17, the second main spring frame 16 is connected in sequence, main spring assembly utilizes the first main spring frame 14, the second main spring frame 16 to be supported between making leaf spring 13 and stop collar 25, promotes mainly pull bar 17 through stage clip assembly, main spring assembly in tubular connector and be connected in compression spring sleeve by key to be fixed together.
Described limit body comprises stop collar 25, gag lever post 26, stop collar 25 front ends and the second main spring frame 16 join and withstand main spring assembly, stop collar 25 rear ends and gag lever post 26 front ends join, gag lever post 26 is enclosed within on lower main transmission bar 27, gag lever post 26 front ends withstand on stop collar 25 rear ends, sealing lower contact 28 the insides are inserted in gag lever post 26 rear ends, namely the both ends of the surface of limit body are limited in respectively main spring assembly and sealing lower contact 28 places, limit body front end withstands main spring assembly, make main spring assembly just form certain spring pressure in initial trip segment, guarantee the main measuring staff 3 of gage beam, secondary measuring staff 22 is always stressed even in during well logging.
The course of work of the present utility model:
When motor forward rotation, upper main transmission bar 29, promote mainly pull bar 17, cocking lever 9 to left movement, promoting mainly pull bar 17 drives the cocking lever 9 being fixed thereon in compression spring sleeve 10 to left movement, when four groups of cocking levers 9 are to left movement in compression spring sleeve 10, also promote four groups of corresponding support bars left, four groups of support bars are propped corresponding main measuring staff 3 to upper left side, meanwhile, also stressed opening thereupon of secondary measuring staff 22, the main measuring staff 3 of now propping and secondary measuring staff 22 just can carry out caliper logging to the borehole wall.Otherwise motor rotates backward, main measuring staff 3 and secondary measuring staff 22 will closure tighten up.
In the course of work, four groups of main measuring staffs 3 and secondary measuring staff 22 can singly be organized reply well radius variations and measure, under borehole wall External Force Acting, secondary measuring staff 22 can shrink measuring in secondary test arm bar cover, and main measuring staff 3 support bar of exerting pressure moves, support bar and then promote corresponding spring pressure bar 9, simultaneously, stop collar 25 guarantees that main spring has just formed certain spring pressure in initial trip segment, has guaranteed that the main measuring staff 3 of gage beam and secondary measuring staff 22 are always stressed even in during well logging, guarantees to measure accurately and reliably.And connect, master is revolved joint piece 18, pair is revolved the increase that saves piece 20 contact surfaces, has reduced surface abrasion and the contact surface that increases hole diameter arm and the borehole wall, guarantees that hole diameter arm firmly pastes the borehole wall.
Device of the present utility model can and push away under the effect of receiving apparatus at motor system, rely on the pushing force of main spring and the support force of stage clip to reach stress equalization, hole diameter arm acts freely, simultaneously, limit body is that spring system applies in advance when duty (not) elastic force, make main spring just form certain spring pressure in initial trip segment, while guaranteeing to log well, hole diameter arm can be adjacent to the borehole wall and measures.
In sum, content of the present utility model is not limited in the above-described embodiment, knowledgeable people in same area can propose easily other embodiment within technological guidance's thought of the present utility model, but within this embodiment is included in scope of the present utility model.
Claims (5)
1. a double well diameter measuring instrument hole diameter arm pushes away receiving apparatus, comprise test body, tubular connector, main transmission bar and sealing lower contact, it is characterized in that, described test body is connected in sequence by gage beam assembly, coupling assembling, braced structures, spring system, limit body, and forms together the machine driving that is fixedly connected with and interlocking mechanism structure not mutually; Main transmission bar in described tubular connector is fastenedly connected successively through braced structures, spring system, limit body and the sealing lower contact of the setting of described test body.
2. double well diameter measuring instrument hole diameter arm according to claim 1 pushes away receiving apparatus, it is characterized in that, described gage beam assembly is four groups of gage beams of lantern body formula, every group of gage beam comprises main measuring staff, secondary measuring staff, coupling assembling, described main measuring staff one end is articulated with described tubular by steady pin and connects body wall upper end, the master that the main measuring staff other end is provided with coupling assembling is revolved joint piece, described secondary measuring staff one end is articulated with described tubular and connects body wall lower end, the other end is set in the secondary measuring staff that includes secondary spring and withstands described secondary spring, the pair that coupling assembling is installed in the suit end of described secondary measuring staff is revolved joint piece, described main measuring staff and secondary measuring staff utilize described coupling assembling master, pair revolve joint piece and connecting pin hinged,
Described coupling assembling is connected in by connecting pin on the main measuring staff and secondary measuring staff of gage beam, described coupling assembling is revolved joint piece and is formed by main joint piece and the pair of revolving, described master revolves joint piece and secondary to revolve joint piece be respectively that a upper surface is a microscler of oblique round slip surface, there is a rectangular recess center that described master is revolved the joint oblique round slip surface of piece one end, and there is corresponding fixing hole at the main front end that revolves joint piece central recess, it is straight end face that master is revolved the oblique round slip surface other end of joint piece, main revolve the joint straight end face of piece and one end of the main measuring staff of gage beam assembly hinged, there is the rectangle plush copper of certain length the center that described pair is revolved the joint oblique round slip surface of piece one end, and there is symmetrical center hole at Fu Xuanjiekuai center plush copper front end, it is also straight end face that pair is revolved the joint piece other end, pair revolves the straight end face of joint piece and one end of the secondary measuring staff of gage beam assembly is hinged, described master revolves joint piece and secondary connection of revolving joint piece is pair to be revolved to the square plush copper of joint block length insert main revolving in joint block length square groove, inserting main fixing hole and the secondary center hole that revolves joint piece that revolves joint piece by connecting pin is again fixed, main measuring staff is fixedly connected with secondary measuring staff.
3. double well diameter measuring instrument hole diameter arm according to claim 2 pushes away receiving apparatus, it is characterized in that, described braced structures is arranged at tubular connector front end inside, described braced structures has four groups of support bars, described support bar is divided into the first support bar and the second support bar, and described the first support bar and the second support bar are linked as one by positive left-hand thread swivel nut screw thread; Described the first post upper is fixedly connected with by steady pin with the main measuring staff of gage beam one end, and described the second support bar lower end is hinged by the stage clip drive link of connecting pin and stage clip assembly.
4. double well diameter measuring instrument hole diameter arm according to claim 3 pushes away receiving apparatus, it is characterized in that, described spring system is connected in sequence by stage clip assembly and main spring assembly;
Described stage clip assembly is four groups of spring bodies corresponding in tubular connector, every group of spring body is by cocking lever, spring, compression spring sleeve, making leaf spring is connected in sequence, the cocking lever of described spring body is provided with positive stop lug boss, spring is withstood in described positive stop lug boss one end, described spring one end relies on by making leaf spring on the end face of the first main spring frame of described main spring assembly, the other end lean with described positive stop lug boss on, the opposite side body of rod of described cocking lever positive stop lug boss stretch out described compression spring sleeve and utilize alignment pin hinged with support bar place, in described compression spring sleeve, there are four groups of springs, and through the fixing encapsulation of four groups of springs and making leaf spring one end, the other end of making leaf spring lean with described main spring assembly front end face on,
Described main spring assembly by the first main spring frame, main spring, promote mainly pull bar, the second main spring frame is connected in sequence, described main spring assembly utilizes first, second main spring frame to be supported between described stage clip assembly and stop collar; The described pull bar of promoting mainly is through the yellow assembly of the pressure in described tubular connector front end, main spring assembly, described in promote mainly pull bar and be connected in described compression spring sleeve by key and be fixed together.
5. double well diameter measuring instrument hole diameter arm according to claim 4 pushes away receiving apparatus, it is characterized in that, described limit body comprises stop collar, gag lever post, described stop collar front end and the second main spring frame join and withstand described main spring assembly, stop collar rear end and gag lever post front end join, described gag lever post is to be enclosed within on lower main transmission bar, the front end of described gag lever post withstands on stop collar rear end, sealing lower contact place is inserted in gag lever post rear end, the both ends of the surface of limit body are limited in respectively main spring assembly and sealing lower contact place, and limit body front end withstands main spring assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881350.4U CN203626819U (en) | 2013-12-25 | 2013-12-25 | Caliper arm pushing and contracting device for dual caliper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881350.4U CN203626819U (en) | 2013-12-25 | 2013-12-25 | Caliper arm pushing and contracting device for dual caliper |
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| Publication Number | Publication Date |
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| CN203626819U true CN203626819U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320881350.4U Expired - Fee Related CN203626819U (en) | 2013-12-25 | 2013-12-25 | Caliper arm pushing and contracting device for dual caliper |
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| CN (1) | CN203626819U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273676A (en) * | 2019-07-19 | 2019-09-24 | 西安思坦仪器股份有限公司 | A kind of hole diameter flow adjustment test macro and method |
| CN114183128A (en) * | 2022-01-20 | 2022-03-15 | 武汉海阔科技有限公司 | Single-arm eccentric caliper |
-
2013
- 2013-12-25 CN CN201320881350.4U patent/CN203626819U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273676A (en) * | 2019-07-19 | 2019-09-24 | 西安思坦仪器股份有限公司 | A kind of hole diameter flow adjustment test macro and method |
| CN114183128A (en) * | 2022-01-20 | 2022-03-15 | 武汉海阔科技有限公司 | Single-arm eccentric caliper |
| CN114183128B (en) * | 2022-01-20 | 2024-04-19 | 武汉海阔科技有限公司 | Single-arm eccentric caliper |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200102 Address after: 100120 Beijing Xicheng District six laying Kang Co-patentee after: China National Petroleum Group Logging Co., Ltd. Patentee after: PetroChina Natural Gas Group Co., Ltd. Address before: 300457 science and Technology Development Office of Bohai Drilling Engineering Co., Ltd., No. 106 Huang Hai Road, Tianjin Binhai New Area Development Zone Patentee before: CNPC Bohai Drilling Engineering Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20201225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |