CN106884619A - A kind of anti-wear measurement while drilling drill collar and measuring method - Google Patents

A kind of anti-wear measurement while drilling drill collar and measuring method Download PDF

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Publication number
CN106884619A
CN106884619A CN201710172171.6A CN201710172171A CN106884619A CN 106884619 A CN106884619 A CN 106884619A CN 201710172171 A CN201710172171 A CN 201710172171A CN 106884619 A CN106884619 A CN 106884619A
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China
Prior art keywords
drill collar
wear
drilling
measurement
main body
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Granted
Application number
CN201710172171.6A
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CN106884619B (en
Inventor
王鹏
窦修荣
艾维平
毛为民
盛利民
陈文艺
贾衡天
吕海川
蓝蓉
范锦辉
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China National Petroleum Corp
CNPC Engineering Technology R&D Co Ltd
Beijing Petroleum Machinery Co Ltd
Original Assignee
China National Petroleum Corp
CNPC Drilling Research Institute Co Ltd
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Priority to CN201710172171.6A priority Critical patent/CN106884619B/en
Publication of CN106884619A publication Critical patent/CN106884619A/en
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Publication of CN106884619B publication Critical patent/CN106884619B/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/16Drill collars
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/003Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings with electrically conducting or insulating means
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02Couplings; joints
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1085Wear protectors; Blast joints; Hard facing
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/12Means 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
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00Testing 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

Abstract

The present invention relates to a kind of drill collar and measuring method, belong to underground Detection Techniques field, and in particular to a kind of anti-wear measurement while drilling drill collar and measuring method.Including:The cyclic structure coil on drill collar is axially mounted to, coil outer end position is provided with the antenna house of dead ring;The wear-resistant strip that diameter becomes big is set on drill collar outer wall near the antenna house.Therefore, the invention has the advantages that:1. designed by multiple tracks wear-resisting ring structure and joint, be prevented from the abrasion of electrode, extend service life, improve drilling efficiency;2. split-type design is used, and each circuit devcie of reasonable arrangement is convenient for changing part of module, improves maintenance efficiency, saves the drilling well stand-by period, reduces drilling cost.

Description

A kind of anti-wear measurement while drilling drill collar and measuring method
Technical field
The present invention relates to a kind of drill collar and measuring method, belong to underground Detection Techniques field, and in particular to a kind of anti-wear Measurement while drilling drill collar and measuring method.
Background technology
Resistivity logging is, using being also earliest most common method in logging method, up to the present, to divide drilling well Still play a part of to be difficult to substitute in geologic section and the work for judging lithology.With bore azimuthal resistivity borehole wall imaging technique be Grow up on the basis of traditional cable e measurement technology, be that one kind can be different around measurement drilling in real time in drilling process Azimuthal formation resistivity imaging measurement method.
With the continuous improvement and extensive application of horizontal well, extended reach well and three-dimensional multi target well drilling technology, rotation is led It is the developing direction of control Technology for Borehole Trajectory drilling tool from now on to closed loop drilling technology, should by azimuthal resistivity imaging technique For rotary steerable tool, the geosteering and formation evaluation needs of the complicated reservoirs such as crack, thin layer can be met.
But, resistivity logging device of the prior art in drilling process, on instrument drill collar install each part Easily abrasion and loosening, reduce measurement efficiency and precision, have impact on the service life of well logging apparatus.And any one module Once damage, it is necessary to pull out of hole and change whole underground logging device, wellbore construction inefficiency.
The content of the invention
Each part on connector for logging while drilling drill collar that the present invention is mainly solved existing for prior art is easy Abrasion and loosening, reduce measurement efficiency and precision, have impact on service life, cause the technical problem that drilling efficiency is low, carry A kind of anti-wear measurement while drilling drill collar and measuring method are gone out.The anti-wear measurement while drilling drill collar and measuring method can effectively keep away Exempt from the abrasion of instrument drill collar, extend service life, and use split-type design, be convenient for changing part of module, improve maintenance Efficiency, saves drilling cost.
Above-mentioned technical problem of the invention is mainly what is be addressed by following technical proposals:
A kind of anti-wear measurement while drilling drill collar, including:The cyclic structure coil on drill collar is axially mounted to, outside the coil End position is provided with the antenna house of dead ring;The wear-resistant strip that diameter becomes big is set on drill collar outer wall near the antenna house.
Optimization, above-mentioned a kind of anti-wear measurement while drilling drill collar, the drill collar is split-type structural, including upper and lower two Individual main body measuring unit, and the intermediate connection unit single for connecting upper and lower main body measurement, the middle measuring unit middle part Position is provided with wear-resistant strip vertically.
Optimization, above-mentioned a kind of anti-wear measurement while drilling drill collar, the upper main body measuring unit end is provided with female male The upper protection joint of buckle structure;The lower main body measuring unit end is provided with the protection joint of double pin thread structures.
Optimization, above-mentioned a kind of anti-wear measurement while drilling drill collar, the drill collar sets multiple and is placed in electric lids Electricity button electrode, each electricity button electrode connected by the line that is arranged in electric lids crossed beam trunking, and the electric lids end is set Multiple is provided with the seal groove of O-ring seal.
Optimization, above-mentioned a kind of anti-wear measurement while drilling drill collar is provided with use on the drill collar body of azimuthal electrodes both sides In the groove of accommodating azimuthal electrodes protection ring, respectively there is a flange medium position both sides of the azimuthal electrodes protection ring, wherein interior The flange of flange covering orientation electrode, in the axially disposed groove of outward flange insertion drill collar body, also, on the inward flange It is provided with wear-resistant strip.
A kind of measurement while drilling method, is measured based on above-mentioned drill collar.
Therefore, the invention has the advantages that:1. designed by multiple tracks wear-resisting ring structure and joint, be prevented from electrode Abrasion, extends service life, improves drilling efficiency;2. split-type design is used, and each circuit devcie of reasonable arrangement facilitates more Part of module is changed, maintenance efficiency is improve, the drilling well stand-by period is saved, drilling cost is reduced.
Brief description of the drawings
Fig. 1-1 is with brill azimuthal resistivity borehole wall imaging device general structure;Fig. 1-2 is the partial view 1 of Fig. 1-1;Figure 1-3 is the partial view 2 of Fig. 1-1;
Fig. 2-1 is upper main unit II constructional appearance figures;Fig. 2-2 is measuring circuit partially circumferentially expanded position figure;
Fig. 3-1 is electricity button electrode structure;Fig. 3-2 is the top view of Fig. 3-1;
Fig. 4-1 is electricity button electrode integrated installation and cover sheet structure;Fig. 4-2 is the bottom view of Fig. 4-1;
Fig. 5-1 is lower main body measuring unit VI constructional appearance figures;Fig. 5-2 partially circumferentially launches for the measuring circuit of Fig. 5-1 The location drawing;
Fig. 6-1 is the K-K direction views of azimuthal electrodes and its protection ring structure in Fig. 5-1;Fig. 6-2 be azimuthal electrodes and its L-L direction view of the protection ring structure in Fig. 5-1;Fig. 6-3 be azimuthal electrodes and its M-M of the protection ring structure in Fig. 5-1 to View;Fig. 6-4 is azimuthal electrodes and its installing matrix top view;Fig. 6-5 is the vertical view after azimuthal electrodes and its protection ring installation Figure.
Fig. 7-1 is intermediate connection unit III structures;Fig. 7-2 is the right view of Fig. 7-1;
Fig. 8-1 is upper protection joint I;Fig. 8-2 is lower protection joint V.
Specific embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
Embodiment:
The a kind of of present invention offer is mainly bored with azimuthal resistivity borehole wall imaging device is bored for rotary steering by without magnetic Quickly, slurry channel, excitation coil system, electricity button electrode system, azimuthal electrodes system, monitoring coil, measuring circuit, control and storage electronics Circuit unit is constituted, and be able to will be visited according to Inversion Calculation method according to different mode of operations by program set in advance in underground Survey data and be converted into apparent resistivity, and the scanning survey in well week, instruction crack and stratum are tied in rotary operation by device Structure inclination angle, realizes borehole wall imaging measurement.
First, equipments overall structure
In the present embodiment, equipments overall structure as shown in figure 1, for convenience of description, five are divided into by apparatus structure from top to bottom Individual part:Upper protection joint I, upper main body measuring unit II, intermediate connection unit III, lower main body measuring unit IV and lower protection Joint V.
1st, upper main body measuring unit II
Fig. 2-1 and Fig. 2-2 is upper main body measuring unit II constructional appearances figure and its measuring circuit partially circumferentially expanded position Figure.Upper main body measuring unit II is mainly included:Power supply is realized with top Other Instruments and lead to logical electric connection structure 201, on Transmitting coil T1 and middle transmitting coil T2, upper electricity button electrode B 1, middle electricity button electrode B 2 and lower electricity button electrode B 3, master control and orientation gal Horse measuring circuit plate D1, mass storage circuit board D2, system power supply plate D3, transmitting and electricity button electrode measurement circuit board D4 (note:Side circuit plate is not given in figure, is represented with the position installed), and set and read data ports T.
Upper transmitting coil T1 and lower transmitting coil T2 are cyclic structure, are axially mounted on drill collar, respectively there is two leads, Circuit cabin is entered by string holes ht1 and ht2 respectively.
Coil outer is provided with ring protection antenna house 203 and ring protection antenna house 206, and antenna house is by two parts group Into being provided with dead ring 202,207 between two parts.In drilling process, to reduce abrasion of the borehole wall to antenna house and insulating tape, Increase wear-resistant strip 204, wear-resistant strip 205 on drill collar outer wall near antenna house to be protected.
When alternating current is passed through in excitation coil, voltage will be induced in drill collar coil both sides, voltage difference is driving Voltage V is divided by turn number N.
Upper electricity button electrode B 1, middle electricity button electrode B 2 and lower electricity button electrode B 3 are made up of three parts:Installing matrix 301, electricity Pole 302 and dead ring 303, as shown in figure 3, electrode diameter 7.5mm, insulate ring thickness 2mm-5mm, is threaded in installing matrix 304.It is fabricated separately, three electricity is then detained into electrode integrated installations and is fixed with consideration easy to maintenance, each electricity button electrode to install On one piece of cover plate, as shown in figure 4, cover plate is provided with end face seal groove 401 and multiple screw holes, by screw realize cover plate with Being fixedly connected for drill collar body, ensure that cover plate inside with drill collar outside well installed in the O-ring seal of end face seal groove 401 The isolation of annular space.Each electricity button electrode respectively have a lead, converged by the axial crossed beam trunking 402 of cover plate bottom surface, then again by The cable-through hole h12 of mounting groove CB enters circuit mounting groove C1.
Master control and orientation gamma survey circuit board, mass storage circuit board, system power supply plate, transmitting and electricity button electrode The arrangement of measuring circuit plate is shown in the circuit part circumferentially deploying location drawing shown in Fig. 2-2, and circuit mounting groove is only gived in figure Size and position relationship, circuit board can be separately mounted in groove C1, groove C2, groove C3 and groove C4, also dependent on being actually needed, mutually Installation site is changed, realizes that communication is connected with power supply by cable-through hole h11, h21, h22, h31 and h41 etc. between each circuit board.Each electricity The protection of road plate is used detains electrode protection cover plate similar structures with electricity, is realized being isolated from the outside with end face seal, uses multiple screws Realization is fixedly connected with drill collar body.
The circuit system of upper main body measuring unit, is realized and upper electrical connection structure 201 by the cable-through hole hM in groove C1 Connection, realize being electrically connected with setting and read data ports T by cable-through hole h13 in groove C1, by connecing in groove C3 Cable-through hole H1 (or H2) realizations of linear window W1 and intermediate connection unit III and being electrically connected for lower main body measuring unit circuit system Logical, effective utilization space simultaneously can reduce wiring difficulty.
22nd, lower main body measuring unit IV
Fig. 5-1 and Fig. 5-2 is the constructional appearance figure of lower main body measuring unit VI and its circumferentially deploying of measuring circuit part The location drawing.Mainly include:Middle monitoring coil M0, lower transmitting coil T3 and lower monitoring coil M2, azimuthal electrodes Az1, azimuthal electrodes Az2, azimuthal electrodes Az3 and azimuthal electrodes Az4, transmitting and azimuthal electrodes measuring circuit plate D5, orientation and tool-face measuring circuit Plate D6, orientation gamma inserting tube D7 and the double C batteries D8 (notes of two sections:The pictorial diagrams such as side circuit plate are not provided in figure, with what is installed Position represents), and wiring window W2.
Middle monitoring coil M0, lower transmitting coil T3 and lower monitoring coil M2 are cyclic structure, are axially mounted on drill collar, Respectively there are two leads, its lead enters circuit cabin by cable-through hole hm0, ht3 and hm2 respectively.Coil antenna is provided with coil outer Cover 502 and coil antenna cover 506, to protect coil M0, coil T3 and coil M2, its coil T3 and coil M2 common antenna covers 506, antenna house is made up of two parts, and dead ring 501, dead ring 507 are provided between two parts.In drilling process, to reduce Abrasion of the borehole wall to antenna house and insulating tape, increases wear-resistant strip 505 and is protected on the drill collar outer wall near antenna house.
When drill collar electric current flows up or down, coil M0 is monitored, the electric current sensed in monitoring coil M2 is drill collar axle To electric current divided by coil the number of turn.
Azimuthal electrodes Az1, azimuthal electrodes Az2, azimuthal electrodes Az3 and azimuthal electrodes Az4 are made up of three parts:Base is installed Body 601, insulating barrier 602 and electrode 603, (K-K, L-L and M-M view represent the position shown in Fig. 5-1 in figure as shown in Figure 6 Sectional view), the exposed circumferential lengths of electrode 603 account for the 1/6 of circumference circle, thickness of insulating layer 2mm-5mm, in installing matrix 601 There is twice radial seal 604 to ensure and external high pressure annular isolation.It is convex that installing matrix is axially respectively provided with one along drill collar in both sides Edge 605, can be embedded in the groove cAy on drill collar body, while a screw hole 606 is provided with per side flange, by drill collar sheet Corresponding two screwed hole LhA axial arranged on body realizes fixing.Each azimuthal electrodes respectively has a lead, by drill collar Tangential cable-through hole hA2, hA3 and hA4 in wall are converged, and then the two axial long hole H3 in by drill collar wall enter circuit cabin.For Install and consideration easy to maintenance, each azimuthal electrodes is fabricated separately, first that four azimuthal electrodes are independently installed solid when mounted It is scheduled in groove CA1, groove CA2, groove CA3 and groove CA4, protection ring 503, protection ring 504 then is installed in azimuthal electrodes both sides, has 8 azimuthal electrodes protection rings of quadrant, each azimuthal electrodes protection ring is by two screwed holes on drill collar body LhP installs trip bolt and realizes fixing.Wherein, the annulus 607 of azimuthal electrodes protection ring 504 is arranged on the recessed of drill collar body In groove CAP, axial force can be born;Respectively there is a flange in the medium position both sides of protection ring, wherein a flange 608 can be covered The flange of azimuthal electrodes, to protect the flange and its trip bolt of azimuthal electrodes, the groove on the insertion drill collar body of another flange 609 In cPy, circumference tangential forces are born;Axial wear-resistant strip 610 is increased in the middle simultaneously, to protect azimuthal electrodes.
Azimuthal measurement is that if, with magnetic north as reference, rotary steerable tool often revolves to obtain the relative bearing of detector Turn 90 °, azimuthal measurement circuit produces an orientation pulse signal, reading and add up that the signal is counted for azimuthal bin.Orientation is passed The position of sensor and detector is fixed, with respect to magnetic north, instrument turn to 0 °, 90 °, 180 °, 270 ° of position when, corresponding two The value of axle aspect sensor output is different, the data of two axles can be judged in software, it is not necessary to calculate angle value, work as arrival An interruption pulse signal, the start and stop of control counter are produced during four angle positions.
Transmitting and azimuthal electrodes measuring circuit plate, orientation and tool-face measuring circuit plate, orientation gamma inserting tube and the double C of two sections The arrangement of battery is shown in the measuring circuit of Fig. 5-2 partially circumferentially expanded position figure, and the size of circuit mounting groove is only gived in figure And position relationship, be separately mounted in groove C5, groove C6, groove C7 and groove C8, by cable-through hole hc5, hc6, the hc7 in drill collar wall and Hc8 realizes that power supply is connected with communication.The protection of circuit board, sensor and battery pack is using similar with the cover sheet of electricity button electrode Structure.
Lower main body measuring unit circuit system, by the axial long hole H3 in drill collar wall, wiring window W2 and intermediate connection Cable-through hole H1 (or H2) realizations of unit III and being electrically connected for upper main body measuring unit circuit system.
3rd, intermediate connection unit III
Intermediate connection unit III structures are as shown in fig. 7, its effect is to realize that upper main body measuring unit II is measured with lower main body Mechanical connection and electric connection between unit IV.Through hole H1 and H2 are the cable-through hole between upper and lower main body measuring unit;Two ends Respectively there are four road sealing grooves, and seal groove 701, seal groove 702, seal groove 703 and seal groove 704, and seal groove 705, sealing Groove 706, seal groove 707 and seal groove 708;Each end is formed between sealing ring with the endoporus of upper and lower main body measuring unit drill collar two-by-two Seal cavity, corresponds to the wiring window W1 of upper main body measuring unit and the wiring window W2 positions of lower main body measuring unit respectively, Wiring is completed at this position;Axial wear-resistant strip 709 is provided with the drill collar outer wall in centre position, intermediate connection is located to protect The antenna house 206 and insulating tape 207 of the middle transmitting coil T2 of unit III both sides, and the middle He of antenna house 502 for monitoring coil M0 Insulating tape 501.
4th, upper protection joint I and lower protection joint V
As shown in figure 8, upper protection joint I is female pin thread structure, lower protection joint V is double pin thread structures, near main body One end of measuring unit is provided with wear-resistant strip.In drilling process, measuring instrument is frequently made a trip and uses, if do not protect connecing Head, can be damaged to the upper end button of main body measuring unit II or the lower end button of lower main body measuring unit IV, it is necessary to repair button, even more Measuring instrument drill collar is changed, there is the hidden danger for damaging instrument, if changing instrument drill collar will dramatically increase cost.If being provided with protection to connect Head, during normal use, the upper end button of upper main body measuring unit II or the lower end button of lower main body measuring unit IV need not be torn open Unload, the upper end box of joint I and the lower end button of lower protection joint V are only protected in dismounting, if this two protections joint is buckled with damage, Directly change joint, easy to maintenance, low cost.
2nd, rotation status azimuthal resistivity borehole wall imaging measurement method
In the present embodiment, 9 kinds of mode of operations (being shown in Table 1) can be combined into using 3 excitation coils T1, T2 and T3, it is every kind of Pattern can obtain 3 electricity button resistivity (B1, B2 and B3), 4 azimuthal resistivities (Az1, Az2, Az3 and Az4), 1 etc. Effect ring electrode resistivity and 1 bit resistivity amount to 9 measured values, i.e., can obtain 81 apparent resistivity songs altogether in working order Line.81 apparent resistivity curve investigation depths are most to be overlapped, and tracing pattern is different, is not that every curve intuitively can reflect ground Layer resistivity, can select satisfactory curve as informed drilling decisions or later stage stratum according to design requirement and wellbore effect The foundation of evaluation, provides a kind of output quantity selection mode for referring in table 2.
The lower 9 kinds of mode of operations of the rotation status of table 1
Pattern Pattern definition
T1 T1 transformer-supplieds
T2 T2 transformer-supplieds
T3 T3 transformer-supplieds
AT1T2 T1, T2 transformer supply same frequency, same amplitude A C, phase difference 180 degree simultaneously
AT1T3 T1, T3 transformer supply same frequency, same amplitude A C, phase difference 180 degree simultaneously
AT2T3 T2, T3 transformer supply same frequency, same amplitude A C, phase difference 180 degree simultaneously
CT1T2 T1, T2 transformer are measured by the type of focusing
CT1T3 T1, T3 transformer are measured by the type of focusing
CT2T3 T2, T3 transformer are measured by the type of focusing
The measurement pattern of table 2 and output quantity
In the present embodiment, correspondence different mode of operation and measurement parameter, can obtain accordingly according to specific algorithm Apparent resistivity value.
The electric current that electrode is measured in this mode is represented, such asThe electrode current that expression is measured under mode m, its Middle m can be 1,2,3,4,5,6,7,8,9;Ed electrodes can B1, B2, B3, Az1, Az2, Az3, Az4, M0, M2, M0B and M2B (difference Be below numerical computations electricity consumption button electrode and coil T2 simulation monitoring transformer), r (ring electrode).
Represent the apparent resistivity that electrode ed is measured under mode m
Wherein,The K values for being electrode ed under mode m, VTIt is magnitude of voltage, the apparent resistivity under each mode of operation can root Calculated according to formula (2) to formula (11).
M=1:
M=2:
M=3:
M=4:
M=5:
M=6:
M=7:
M=8:
M=9:
Formula (2) is therein to formula (11)WithIt is directly measured quantities,It is derived quantity.
In the present embodiment, (electricity button electrode is weekly with electricity button diameter and circumferential point of valve for electricity button electrode resistance rate imaging resolution Sampled point) it is closely related, withDrilling well rotating speed/minute is represented, n is circumferential point of valve number,It is circumferential resolution angle, thenRepresent one point of maximum time spacing of valve of sampling.In resistivity imaging measurement work, to reduce the skin that becomes Effects, it is desirable to which stimulating frequency is lower, but realize different measurement patterns for electricity button imaging measurement frequency dividing mode, it is necessary to Certain frequency bandwidth is taken, suitable stimulating frequency can be selected according to practical measurement requirement.
Specific embodiment described herein is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.

Claims (6)

1. a kind of anti-wear measurement while drilling drill collar, it is characterised in that including:The cyclic structure coil on drill collar is axially mounted to, Coil outer end position is provided with the antenna house of dead ring;Diameter is set on the drill collar outer wall near the antenna house and becomes big Wear-resistant strip.
2. a kind of anti-wear measurement while drilling drill collar according to claim 1, it is characterised in that the drill collar is split type knot Structure, including upper and lower two main body measuring units, and the intermediate connection unit single for connecting the measurement of upper and lower main body, it is described in Between measuring unit middle part vertically position be provided with wear-resistant strip.
3. a kind of anti-wear measurement while drilling drill collar according to claim 2, it is characterised in that the upper main body measuring unit End is provided with the upper protection joint of female pin thread structure;The lower main body measuring unit end is provided with the protection of double pin thread structures Joint.
4. a kind of anti-wear measurement while drilling drill collar according to claim 1, it is characterised in that the drill collar sets multiple peaces The electricity button electrode being placed in electric lids, each electricity button electrode is connected by the line being arranged in electric lids crossed beam trunking, the electricity Pole patch ends set the seal groove that multiple is provided with O-ring seal.
5. a kind of anti-wear measurement while drilling drill collar according to claim 1, it is characterised in that the drill collar of azimuthal electrodes both sides The groove for housing azimuthal electrodes protection ring is provided with body, the medium position both sides of the azimuthal electrodes protection ring respectively have One flange, the wherein flange of inward flange covering orientation electrode, in the axially disposed groove of outward flange insertion drill collar body, and And, it is provided with wear-resistant strip on the inward flange.
6. a kind of measurement while drilling method, it is characterised in that measured based on the drill collar described in any of the above-described claim.
CN201710172171.6A 2017-03-22 2017-03-22 wear-resistant measurement-while-drilling drill collar and measurement method Active CN106884619B (en)

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Cited By (3)

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CN111734401A (en) * 2019-03-22 2020-10-02 中国石油化工股份有限公司 High-temperature-resistant measurement-while-drilling device and manufacturing method thereof
CN112253089A (en) * 2020-12-09 2021-01-22 中国石油天然气集团有限公司 Electromagnetic wave resistivity measuring device while drilling
CN112302619A (en) * 2019-08-02 2021-02-02 中国石油化工股份有限公司 Resistivity instrument for imaging while drilling

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CN111734401A (en) * 2019-03-22 2020-10-02 中国石油化工股份有限公司 High-temperature-resistant measurement-while-drilling device and manufacturing method thereof
CN111734401B (en) * 2019-03-22 2022-07-22 中国石油化工股份有限公司 High-temperature-resistant measurement-while-drilling device and manufacturing method thereof
CN112302619A (en) * 2019-08-02 2021-02-02 中国石油化工股份有限公司 Resistivity instrument for imaging while drilling
CN112253089A (en) * 2020-12-09 2021-01-22 中国石油天然气集团有限公司 Electromagnetic wave resistivity measuring device while drilling
CN112253089B (en) * 2020-12-09 2023-08-29 中国石油天然气集团有限公司 Electromagnetic wave resistivity measuring device while drilling

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