CN105484742A - Multi-parameter logging while drilling apparatus - Google Patents
Multi-parameter logging while drilling apparatus Download PDFInfo
- Publication number
- CN105484742A CN105484742A CN201510946063.0A CN201510946063A CN105484742A CN 105484742 A CN105484742 A CN 105484742A CN 201510946063 A CN201510946063 A CN 201510946063A CN 105484742 A CN105484742 A CN 105484742A
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- Prior art keywords
- pressure
- sealed
- guide sleeve
- flow guide
- drill collar
- Prior art date
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Links
- 238000005553 drilling Methods 0.000 title claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 28
- 239000011888 foil Substances 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000003860 storage Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009530 blood pressure measurement Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/005—Testing the nature of borehole walls or the formation by using drilling mud or cutting data
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Acoustics & Sound (AREA)
- Remote Sensing (AREA)
- Geophysics (AREA)
- Measuring Fluid Pressure (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a multi-parameter logging while drilling apparatus which comprises a drill collar. A pressure test bin is formed in the side face of the lower end of the drill collar. Two pressure sensors used for measuring mud pressure of a water hole and an annulus are arranged in the pressure test bin. The pressure test bin is sealed through a pressure bin sealing end cover. A plurality of grooves are formed in the drill collar and sealed through corresponding sealing cover plates. An axial passageway of the drill collar is achieved through the structural style of the cover plate relay. Pressure of the water hole and pressure of the annulus are integrated in one sealed bin, and pressure transmission passageways are formed by designing transverse small holes and small holes perpendicular to the axial direction. The four grooves are evenly distributed in the axial central position of the drill collar by a circle, strain gauges are arranged at the bottoms of the grooves, and the influences of structure nonlinearity on torque and drilling pressure measurement are reduced. Finally, the overall structural design program of the multi-parameter logging while drilling apparatus is solved, and the sensors are reasonably arranged. The multi-parameter logging while drilling apparatus is reasonable in structural layout, high in reliability, easy to machine, convenient to maintain and beneficial to expansion of instruments.
Description
[technical field]
The invention belongs to logging equipment technical field, relate to a kind of connector for logging while drilling, specifically a kind of multi-parameter logging while drilling apparatus.
[background technology]
In oil connector for logging while drilling, connector for logging while drilling be all measure relevant geologic parameter parameter as parameters such as formation resistivity, gamma, degree of porosity and lithology and density loggings.And the measurement environment that maximum different of connector for logging while drilling and wireline logging instrument are exactly logger is drilling state.For enabling to adapt to drilling condition preferably with brill instrument, ensure that instrument works, reliably simultaneously for Drilling optimization provides the Real-Time Monitoring of hole condition.Design research and development seem comparatively urgent with drilling well condition detecting instrument.
The inside and outside form of structure quickly of the many employings of this quasi-instrument at present.Along with increasing of measurement parameter, how in conjunction with the requirement of logging method, the various sensor of reasonable Arrangement, and the structure design of axial communication between various sensor, the maintaining of instrument etc. are difficult point and the emphasis of this quasi-instrument Design of Mechanical Structure.
[summary of the invention]
The object of the invention is to solve above-mentioned the problems of the prior art, provides a kind of multi-parameter logging while drilling apparatus, and this logging while drilling apparatus can solve instrument shaft to a channels designs difficult problem, is solved an axial communication Design difficult problem for instrument by the mode of cover plate relay.Effective and reasonable each sensor that arranges distributes on drill collar with probe, solves the difficult problem that instrument manufacturing, installation and later maintenance are maintained.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of multi-parameter logging while drilling apparatus, is comprised drill collar, drill collar lower end side is offered pressure test storehouse, be provided with two pressure sensors of the mud pressure for measuring hydrophthalmia and annular space, and sealed by Pressure chamber seal cover board in pressure test storehouse; The top and bottom of hydrophthalmia are respectively arranged with upper end mud flow guide sleeve and lower end mud flow guide sleeve, be provided with hydrophthalmia resistivity probe, arrange annular space resistivity probe in annular space in the mud flow guide sleeve of upper end; Four moment of torsion strain sealed grooves be evenly arranged circumferentially are offered in the middle part of drill collar, foil gauge for measuring moment of torsion and pressure is set in moment of torsion strain sealed groove, foil gauge is provided with signal processing unit, signal processing unit for storing, amplifying, filtering and transmission from the signal of pressure sensor, foil gauge and hydrophthalmia resistivity probe, and export by data port; Moment of torsion strain sealed groove is all by circuit sealing cover plate for sealing.
The present invention further improves and is:
The outside heap at the upper and lower two ends of described drill collar is welded with fan-shaped wear-resistant belt.
On described drill collar, offer two grooves for connector mounting, position corresponding upper end mud flow guide sleeve and the lower end mud flow guide sleeve respectively of two grooves, and by upper end mud flow guide sleeve seal cover board and the sealing of lower end mud flow guide sleeve seal cover board; All connector is installed in two grooves, and two grooves lay respectively at the both sides up and down of a moment of torsion strain sealed groove, two grooves and this moment of torsion strain the through hole offered between sealed groove for making wire pass through, on connector in the connecting groove of wire one end, the signal processing unit that the other end strains in sealed groove with moment of torsion is connected.
Described upper end mud flow guide sleeve and lower end mud flow guide sleeve are respectively by upper end sealing-plug and the sealing of lower end sealing-plug; Circuit sealing cover plate is by an O type circle sealing.
The annular pressure conduction hole for conducting annular pressure and the hydrophthalmia pressure conducting bores for conducting water borehole pressure is also offered in described pressure test storehouse; Two pressure sensors are arranged on hydrophthalmia pressure mount pad and annular pressure mount pad respectively.
Described hydrophthalmia resistivity probe is installed collar by the first collar groove and is realized fixing, and by the 2nd O type circle sealing; The front end of hydrophthalmia resistivity probe is installed hermetically sealed connector and is realized electrical connection.
Described annular space resistivity probe is installed on drill collar by resistivity seal cover board, and realizes radial fixing by the second collar groove installation collar, and annular space resistivity probe is sealed by the 3rd O type circle.
Compared with prior art, the present invention has following beneficial effect:
The present invention offers some grooves on drill collar, and is sealed by corresponding seal cover board, is realized the axial passage of drill collar by the form of structure of cover plate relay.Hydrophthalmia pressure and annular pressure are integrated in a sealed compartment, by designing aperture horizontal with perpendicular to axial direction, the passage that mineralization pressure transmits.The present invention will measure the probe designs of annular space resistivity on the seal cover board of drill collar, and processing is simple, easy maintenance.Be arranged on the mud flow guide sleeve of lower end by the probe measuring hydrophthalmia mud resistivity, minimizing is washed away, and is convenient to maintaining.In the position of the axially central authorities of drill collar, uniformly along one week open four grooves, arrange foil gauge at bottom land, reduce the impact of structural nonlinear on moment of torsion and the pressure of the drill measurement.Finally, the invention solves the general structure design problem of multi-parameter logging while drilling apparatus, each sensor of reasonable Arrangement.Topology layout is reasonable, reliability is high, it is simple, easy to maintenance to process and be convenient to the expansion of instrument.
[accompanying drawing explanation]
Fig. 1 is overall structure schematic diagram of the present invention; Wherein, (a) is front view, and (b) is upward view, and (c) is rear elevation;
Fig. 2 is sectional drawing of the present invention;
Fig. 3 is the sectional drawing of annular space mud pressure conducting structure of the present invention;
Fig. 4 is the sectional drawing of pressure test chamber structure of the present invention;
Fig. 5 is the partial enlarged drawing of D part in Fig. 2;
Fig. 6 is the sectional drawing of foil gauge adhesive structure of the present invention;
Fig. 7 is the partial enlarged drawing of F part in Fig. 2.
Wherein, 1-drill collar; 2-wear-resistant belt; 3-lower end mud flow guide sleeve seal cover board; 4-circuit sealing cover plate; 5-upper end mud flow guide sleeve seal cover board; 6-Pressure chamber seal cover board; 7-moment of torsion strain sealed groove; 8-data port; 9-lower end mud flow guide sleeve; 10-lower end sealing-plug; 11-O type circle; 12-circuit sealing cover plate; 13-upper end sealing-plug; 14-lower end mud flow guide sleeve; 15-annular pressure conduction hole; 16-hydrophthalmia pressure mount pad; 17-annular pressure mount pad; 18-hydrophthalmia pressure conducting bores; 19-pressure sensor; 20-hydrophthalmia; 21 collar grooves; 22-O type circle; 23-sealing-plug; 24-hydrophthalmia resistivity probe; 25-resistivity seal cover board; 26-collar groove; 27-annular space resistivity probe; 28-O type circle; 29-foil gauge pastes cross section.
[detailed description of the invention]
Below in conjunction with accompanying drawing, the present invention is described in further detail:
See Fig. 1 to Fig. 7, the present invention includes drill collar 1, drill collar 1 lower end side offers pressure test storehouse, two pressure sensors 19 of the mud pressure for measuring hydrophthalmia 20 and annular space are installed in pressure test storehouse, and are sealed by Pressure chamber seal cover board 6; The top and bottom of hydrophthalmia 20 are respectively arranged with upper end mud flow guide sleeve 14 and lower end mud flow guide sleeve 9, be provided with hydrophthalmia resistivity probe 24, arrange annular space resistivity probe 27 in annular space in upper end mud flow guide sleeve 14; Four moment of torsion strain sealed grooves 7 be evenly arranged circumferentially are offered in the middle part of drill collar 1, foil gauge for measuring moment of torsion and pressure is set in moment of torsion strain sealed groove 7, foil gauge is provided with signal processing unit, signal processing unit for storing, amplifying, filtering and transmission from the signal of pressure sensor 19, foil gauge and hydrophthalmia resistivity probe 24, and export by data port 8; Moment of torsion strain sealed groove 7 is all sealed by circuit sealing cover plate 4.
As shown in Figure 2, the outside heap at drill collar about 1 two ends is welded with fan-shaped wear-resistant belt 2.On drill collar 1, offer two grooves for connector mounting, position corresponding upper end mud flow guide sleeve 14 and the lower end mud flow guide sleeve 9 respectively of two grooves, and sealed by upper end mud flow guide sleeve seal cover board 5 and lower end mud flow guide sleeve seal cover board 3; All connector is installed in two grooves, and two grooves lay respectively at the both sides up and down of a moment of torsion strain sealed groove 7, two grooves and this moment of torsion strain the through hole offered between sealed groove 7 for making wire pass through, on connector in the connecting groove of wire one end, the signal processing unit that the other end strains in sealed groove 7 with moment of torsion is connected.Upper end mud flow guide sleeve 14 and lower end mud flow guide sleeve 9 seal respectively by upper end sealing-plug 13 and lower end sealing-plug 10; Circuit sealing cover plate 4 is by an O type circle sealing.
As shown in Figure 3 and Figure 4, the annular pressure conduction hole 15 for conducting annular pressure and the hydrophthalmia pressure conducting bores 18 for conducting water borehole pressure is also offered in pressure test storehouse; Two pressure sensors 19 are arranged on hydrophthalmia pressure mount pad 16 and annular pressure mount pad 17 respectively.
As shown in figure 5 and figure 7, hydrophthalmia resistivity probe 24 is installed collar by the first collar groove 21 and is realized fixing, and is sealed by the 2nd O type circle 22; The front end of hydrophthalmia resistivity probe 24 is installed hermetically sealed connector 23 and is realized electrical connection.Annular space resistivity probe 27 is installed on drill collar 1 by resistivity seal cover board 25, and installs collar by the second collar groove 26 and realize radial fixing, and annular space resistivity probe 27 is sealed by the 3rd O type circle 28.
Structural principle of the present invention and the course of work:
On drill collar 1 of the present invention, heap is welded with fan-shaped wear-resistant belt 2, protection instrument body.Lower end mud flow guide sleeve seal cover board 3 is integrated installation pressure sensor 19 below, is arranged on hydrophthalmia pressure mount pad 16 respectively with on annular pressure mount pad 17, realizes the fixing of pressure sensor 19.The mud pressure of annular space and hydrophthalmia is measured respectively by annular pressure conduction hole 15 and hydrophthalmia pressure conducting bores 18.Lower end mud flow guide sleeve 9 and upper end mud flow guide sleeve 14 are used for realizing instrument respectively and are connected with the communication of measuring pipe nipple up and down.Upper and lower end sealing-plug is for isolating mud when preventing logger string from occurring unexpected seal failure, playing the effect of second protection instrument; Circuit sealing cover plate is provided with an O type circle 11 for 12 times, realizes seal isolation mud.Annular space mud resistivity probe 27 is arranged on resistivity seal cover board 25, installs collar and realizes radial fixing, realize sealing with the 2nd O type circle 28 by collar groove 26.Hydrophthalmia mud resistivity probe 24 is arranged on lower end mud flow guide sleeve 9, installs collar and realizes fixing, realize electrical connection with sealing-plug 23 by collar groove 21.The foil gauge foil gauge be attached to as shown in Figure 6 measuring moment of torsion and pressure is pasted in the sealed groove in cross section 29.Illustrated symmetrical configuration, reduces structural nonlinear to the impact of measurement result, effectively offsets the impact of moment of flexure.
Above content is only and technological thought of the present invention is described; protection scope of the present invention can not be limited with this; every technological thought proposed according to the present invention, any change that technical scheme basis is done, within the protection domain all falling into claims of the present invention.
Claims (7)
1. a multi-parameter logging while drilling apparatus, it is characterized in that, comprise drill collar (1), drill collar (1) lower end side offers pressure test storehouse, two pressure sensors (19) of the mud pressure for measuring hydrophthalmia (20) and annular space are installed in pressure test storehouse, and by Pressure chamber seal cover board (6) sealing; The top and bottom of hydrophthalmia (20) are respectively arranged with upper end mud flow guide sleeve (14) and lower end mud flow guide sleeve (9), be provided with hydrophthalmia resistivity probe (24) in upper end mud flow guide sleeve (14), annular space resistivity probe (27) is set in annular space; Four moments of torsion strain sealed groove (7) be evenly arranged circumferentially are offered at drill collar (1) middle part, foil gauge for measuring moment of torsion and pressure is set in moment of torsion strain sealed groove (7), foil gauge is provided with signal processing unit, signal processing unit is used for storage, amplification, filtering and the transmission signal from pressure sensor (19), foil gauge and hydrophthalmia resistivity probe (24), and is exported by data port (8); Moment of torsion strain sealed groove (7) is all sealed by circuit sealing cover plate (4).
2. multi-parameter logging while drilling apparatus according to claim 1, is characterized in that, the outside heap at the upper and lower two ends of described drill collar (1) is welded with fan-shaped wear-resistant belt (2).
3. multi-parameter logging while drilling apparatus according to claim 1, it is characterized in that, on described drill collar (1), offer two grooves for connector mounting, corresponding upper end mud flow guide sleeve (14) and lower end mud flow guide sleeve (9) respectively, position of two grooves, and by upper end mud flow guide sleeve seal cover board (5) and lower end mud flow guide sleeve seal cover board (3) sealing; All connector is installed in two grooves, and two grooves lay respectively at the both sides up and down of moment of torsion strain sealed groove (7), two grooves and this moment of torsion strain the through hole offered between sealed groove (7) for making wire pass through, on connector in the connecting groove of wire one end, the signal processing unit that the other end and moment of torsion strain in sealed groove (7) is connected.
4. multi-parameter logging while drilling apparatus according to claim 3, it is characterized in that, described upper end mud flow guide sleeve (14) and lower end mud flow guide sleeve (9) are respectively by upper end sealing-plug (13) and lower end sealing-plug (10) sealing; Circuit sealing cover plate (4) is sealed by an O type circle.
5. multi-parameter logging while drilling apparatus according to claim 1, it is characterized in that, in described pressure test storehouse, also offering annular pressure conduction hole (15) for conducting annular pressure and the hydrophthalmia pressure conducting bores (18) for conducting water borehole pressure; Two pressure sensors (19) are arranged on hydrophthalmia pressure mount pad (16) and annular pressure mount pad (17) respectively.
6. multi-parameter logging while drilling apparatus according to claim 1, is characterized in that, described hydrophthalmia resistivity probe (24) is installed collar by the first collar groove (21) and realized fixing, and by the 2nd O type circle (22) sealing; The front end of hydrophthalmia resistivity probe (24) is installed hermetically sealed connector (23) and is realized electrical connection.
7. multi-parameter logging while drilling apparatus according to claim 1, it is characterized in that, described annular space resistivity probe (27) is installed on drill collar (1) by resistivity seal cover board (25), and realizing radial fixing by the second collar groove (26) installation collar, annular space resistivity probe (27) is sealed by the 3rd O type circle (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510946063.0A CN105484742B (en) | 2015-12-16 | 2015-12-16 | A kind of multi-parameter logging while drilling apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510946063.0A CN105484742B (en) | 2015-12-16 | 2015-12-16 | A kind of multi-parameter logging while drilling apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN105484742A true CN105484742A (en) | 2016-04-13 |
| CN105484742B CN105484742B (en) | 2018-07-13 |
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| CN201510946063.0A Active CN105484742B (en) | 2015-12-16 | 2015-12-16 | A kind of multi-parameter logging while drilling apparatus |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522929A (en) * | 2016-12-07 | 2017-03-22 | 中国石油天然气集团公司 | Ultrasound well diameter during-drilling well logging device |
| CN106837201A (en) * | 2017-03-22 | 2017-06-13 | 中国石油天然气集团公司 | A kind of split type drill collar and logging method |
| CN106884619A (en) * | 2017-03-22 | 2017-06-23 | 中国石油天然气集团公司 | A kind of anti-wear measurement while drilling drill collar and measuring method |
| CN107387059A (en) * | 2017-07-10 | 2017-11-24 | 贝兹维仪器(苏州)有限公司 | A kind of underground engineering parameter measuring instrument |
| CN107503745A (en) * | 2016-06-14 | 2017-12-22 | 中国石油化工股份有限公司 | A kind of method of shaft bottom bit wear state monitoring while drilling |
| CN107503744A (en) * | 2016-06-14 | 2017-12-22 | 中国石油化工股份有限公司 | A kind of device of shaft bottom bit wear state monitoring while drilling |
| CN107829726A (en) * | 2017-12-14 | 2018-03-23 | 杭州丰禾石油科技有限公司 | A kind of connector for logging while drilling |
| CN108593202A (en) * | 2018-04-28 | 2018-09-28 | 中国石油集团工程技术研究院有限公司 | A kind of scaling method system for torque measurement |
| CN108661627A (en) * | 2018-04-28 | 2018-10-16 | 中国石油集团工程技术研究院有限公司 | A kind of signal processing system and method for torque measurement |
| CN108798627A (en) * | 2018-04-28 | 2018-11-13 | 中国石油集团工程技术研究院有限公司 | One kind is with torch measuring system under drilling well and method |
| CN109138992A (en) * | 2018-09-07 | 2019-01-04 | 中国石油天然气集团有限公司 | A kind of remote detection electromagnetic resistivity logging while drilling apparatus structure |
| CN109580051A (en) * | 2018-12-24 | 2019-04-05 | 天津大学 | A kind of C-shaped block sensor measuring development machine hobboing cutter stress |
| CN109611081A (en) * | 2018-12-29 | 2019-04-12 | 中国科学院地质与地球物理研究所 | With brill instrument flow device for pressure measurement |
| CN109723434A (en) * | 2018-12-29 | 2019-05-07 | 中国科学院地质与地球物理研究所 | Drilling tool pressure pulse perseverance amplitude adjusted method and regulating system |
| CN109779620A (en) * | 2019-01-25 | 2019-05-21 | 中国石油天然气集团有限公司 | A kind of azimuthal density image logging while drilling apparatus |
| CN110864833A (en) * | 2019-10-31 | 2020-03-06 | 清华大学 | Torque measuring device |
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Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503745A (en) * | 2016-06-14 | 2017-12-22 | 中国石油化工股份有限公司 | A kind of method of shaft bottom bit wear state monitoring while drilling |
| CN107503744A (en) * | 2016-06-14 | 2017-12-22 | 中国石油化工股份有限公司 | A kind of device of shaft bottom bit wear state monitoring while drilling |
| CN106522929A (en) * | 2016-12-07 | 2017-03-22 | 中国石油天然气集团公司 | Ultrasound well diameter during-drilling well logging device |
| CN106522929B (en) * | 2016-12-07 | 2020-01-07 | 中国石油天然气集团公司 | Ultrasonic borehole diameter logging-while-drilling device |
| CN106884619A (en) * | 2017-03-22 | 2017-06-23 | 中国石油天然气集团公司 | A kind of anti-wear measurement while drilling drill collar and measuring method |
| CN106837201A (en) * | 2017-03-22 | 2017-06-13 | 中国石油天然气集团公司 | A kind of split type drill collar and logging method |
| CN106837201B (en) * | 2017-03-22 | 2018-09-28 | 中国石油天然气集团公司 | A kind of split type drill collar and logging method |
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| CN109580051A (en) * | 2018-12-24 | 2019-04-05 | 天津大学 | A kind of C-shaped block sensor measuring development machine hobboing cutter stress |
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