CN214035635U - Borehole compensation electromagnetic wave resistivity measuring device while drilling - Google Patents
Borehole compensation electromagnetic wave resistivity measuring device while drilling Download PDFInfo
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- CN214035635U CN214035635U CN202120110953.9U CN202120110953U CN214035635U CN 214035635 U CN214035635 U CN 214035635U CN 202120110953 U CN202120110953 U CN 202120110953U CN 214035635 U CN214035635 U CN 214035635U
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Abstract
The utility model provides a borehole compensation electromagnetic wave resistivity measuring device while drilling, which comprises a drill collar main body and a mounting groove, wherein the mounting groove is arranged on the surface of the drill collar main body; the coil slot is arranged on the inner wall of the mounting groove in a surrounding manner; the receiving coil is arranged in the coil slot in a surrounding manner; the transmitting coil is arranged in the coil slot in a surrounding manner, and the coil slot is positioned between the receiving coils; a mounting block disposed inside the collar body. The utility model provides a along with boring well compensation electromagnetic wave resistivity measuring device can avoid using the screw thread to install through its installation mechanism to make the protective sheath can not appear being difficult to the condition of dismantling and droing when following drill collar main part and rotating, thereby guaranteed the safety of coil system, prolonged the device's life.
Description
Technical Field
The utility model relates to a resistivity logging while drilling technical field especially relates to a well compensation electromagnetic wave resistivity measuring device while drilling.
Background
At present, a known electromagnetic wave resistivity measurement while drilling device usually adopts a coil system with a plurality of transmitting coils and receiving coils, the transmitting coils transmit electromagnetic waves at different operating frequencies by using an electromagnetic wave propagation principle, the electromagnetic waves are received by receivers at different intervals after being propagated through a stratum, phase differences and amplitude ratios of a plurality of groups of receiving signals are obtained, and phase difference resistivity or amplitude attenuation resistivity at different detection depths is obtained after conversion. Because changes in borehole diameter (e.g., asperities) during the measurement process may cause the measurement to not truly reflect the formation resistivity, borehole compensation is required for the measurement to obtain true formation resistivity.
For example, the invention disclosed in the publication No. CN101482013B provides a borehole compensation electromagnetic wave resistivity measuring device while drilling, which adopts an asymmetric coil system with unequal source distances and a transmitting antenna at one side of a receiving antenna, and the asymmetric coil system and a measuring circuit are sleeved on a drill collar to obtain formation resistivity measured values with a plurality of detection depths, and an ultrasonic probe and a measuring circuit are arranged on the drill collar to measure the diameter of a borehole, and the formation resistivity measured values are compensated and corrected according to the relation between the resistivity measured values and the borehole diameter and the mud conductivity, so that the formation resistivity can be accurately measured, the length of the measuring device can be shortened, the manufacturing cost can be reduced, the occurrence of instrument bending and drilling sticking in a large-deviation well or a branch well with a small curvature radius can be avoided, the real-time borehole compensation function can be realized, the drilling speed is not influenced, and the borehole compensation electromagnetic wave resistivity measuring device is favorable for the large-deviation well, In the horizontal well, the well track is adjusted in time according to geological information, and a drilling tool is controlled to pass through the optimal position of an oil reservoir.
But it is when protecting coil system, protects through the lag of screw thread installation, when the drill collar rotates, will drive lag and the wall of a well rotational friction, when the angle of pivoted direction and screw thread screw in is the same, can lead to the lag to dismantle difficultly, when the angle of pivoted direction and screw thread screw in is opposite, then can appear the lag and break away from, in case the lag breaks away from and will lead to the coil to appear the damage condition.
Therefore, there is a need to provide a new borehole-while-drilling compensated electromagnetic wave resistivity measurement device to solve the above-mentioned problems.
Disclosure of Invention
The utility model provides a along with boring well compensation electromagnetic wave resistivity measuring device, the technical problem of solution can lead to the lag to be difficult to dismantle when the angle of pivoted direction and screw thread screw in is the same, when the angle of pivoted direction and screw thread screw in is opposite, then can appear that the lag breaks away from, in case the lag breaks away from and will lead to the problem that the damage condition appears in the coil.
In order to solve the technical problem, the utility model provides a borehole compensation electromagnetic wave resistivity measuring device while drilling, including drill collar main part, mounting groove, the mounting groove is seted up in the surface of drill collar main part; the coil slot is arranged on the inner wall of the mounting groove in a surrounding manner; the receiving coil is arranged in the coil slot in a surrounding manner; the transmitting coil is arranged in the coil slot in a surrounding manner, and the coil slot is positioned between the receiving coils; a mounting block disposed inside the collar body; the thread groove is formed in the surface of the drill collar body; the bolt can transversely penetrate through the mounting block in a rotatable manner, and is screwed with the thread groove; the protection sleeve, the protection sleeve set up in the outside of installation piece, and the shape of protection sleeve sets up to the ring type.
Preferably, the material of the protective sleeve is set to be a non-magnetic stainless steel material, and the outer diameter of the protective sleeve is matched with the outer diameters of the upper end and the lower end of the drill collar main body.
Preferably, the surfaces of the receiving coil and the transmitting coil are wrapped by insulating tapes, and insulating glue is filled between the insulating tapes and the receiving coil and between the insulating tapes and the transmitting coil.
Preferably, the storage cavity is formed in the drill collar body, a rack plate is movably arranged in the storage cavity, a protection groove is formed in the outer wall of the drill collar body, a rotating rod is rotatably and transversely arranged in the protection groove in a penetrating mode, the inner end of the rotating rod is arranged in the storage cavity and is provided with a rotating gear meshed with the rack plate, and a shielding piece is arranged on the outer side of the bottom end of the rotating gear.
Preferably, the outer end of dwang just is located the inside of guard slot is provided with the knob, the plum blossom groove has been seted up in the outside of knob.
Preferably, the shape of the shielding piece is circular ring, and the shielding piece is made of cast stone.
Compared with the prior art, the utility model provides a well along with boring compensation electromagnetic wave resistivity measuring device has following beneficial effect:
the utility model provides a compensation electromagnetic wave resistivity measuring device follows drilling, through the installation piece, the thread groove, installation mechanism is constituteed to bolt and lag, can avoid using the screw thread to install through its installation mechanism, thereby make the protective housing can not appear being difficult to dismantle and the condition that drops when following drill collar main part and rotate, thereby the safety of coil system has been guaranteed, the life of the device has been prolonged, in addition, through the rack plate, the protective housing, the dwang, the slewing gear constitutes protection machanism with the shielding piece, can shelter from the bolt through its protection machanism, avoid the condition that the long-time frictional force of bolt and the wall of a well appears the damage, in case the bolt appears the damage will appear being difficult to dismantle the change with the installation piece, consequently, the practicality has been improved.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the apparatus for borehole compensation while drilling electromagnetic wave resistivity measurement according to the present invention;
FIG. 2 is a schematic top view of the structure of the shielding sheet shown in FIG. 1;
fig. 3 is a partially enlarged view of a portion a shown in fig. 1.
Reference numbers in the figures: 1. a drill collar body; 2. mounting grooves; 3. a coil slot; 4. a receiving coil; 5. a transmitting coil; 6. mounting blocks; 7. a thread groove; 8. a bolt; 9. a protective sleeve; 10. a receiving cavity; 11. a rack plate; 12. a protective bath; 13. rotating the rod; 14. a rotating gear; 15. a knob; 16. a shielding sheet.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
Please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of the apparatus for borehole compensation while drilling electromagnetic resistivity measurement according to the present invention; FIG. 2 is a schematic top view of the structure of the shielding sheet shown in FIG. 1; fig. 3 is a partially enlarged view of a portion a shown in fig. 1.
A borehole-while-drilling compensated electromagnetic wave resistivity measurement apparatus includes: the drill collar main body 1, mounting groove 2 set up in the surface of drill collar main body 1, and coil groove 3, coil groove 3 are the shape of encircleing and set up in the inner wall of mounting groove 2, and the mounting groove 2 of seting up can make coil groove 3 install at the outer wall of drill collar main body 1, and the coil groove 3 of installation can make the coil system twine.
Receiving coil 4, receiving coil 4 are the shape of encircleing and set up in the inside of coil groove 3, transmitting coil 5 are the shape of encircleing and set up in the inside of coil groove 3, and coil groove 3 is located between receiving coil 4, and receiving coil 4 and the installation piece 6 that set up can constitute the coil system to according to the detection characteristic of coil system, can obtain the influence curve of the well under the different well hole circumstances to original phase difference conductivity.
The mounting block 6 is detachably arranged in the drill collar body 1, the thread groove 7 is formed in the surface of the drill collar body 1, the bolt 8 and the bolt 8 transversely penetrate in the mounting block 6 in a rotating mode, the bolt 8 and the thread groove 7 are arranged in a rotating mode, the protecting sleeve 9 is arranged on the outer side of the mounting block 6, and the protecting sleeve 9 is arranged in a circular ring shape.
The detachable installation block 6 can be conveniently detached and replaced, the practicability is improved, and due to the fact that the bolt 8 is connected with the thread groove 7 in a screwing mode, the protection sleeve 9 is not in threaded connection with the drill collar main body 1, and the situation that the protection sleeve 9 is difficult to detach and break away from when the drill collar main body 1 rotates can be prevented.
The material of lag 9 sets up to no magnetism stainless steel material, and the external diameter phase-match at lag 9 and drill collar main part 1 upper and lower both ends, can avoid hindering the transmission and the acceptance of electromagnetic wave through the setting of no magnetism stainless steel material, and can avoid influencing the work of well drilling through the size matching.
The surfaces of the receiving coil 4 and the transmitting coil 5 are all wrapped by insulating adhesive tapes, insulating adhesives are filled between the insulating adhesive tapes and the receiving coil 4 and the transmitting coil 5, the electrostatic phenomenon can be prevented through the arrangement of the insulating adhesive tapes and the insulating adhesives, and the influence on the receiving and transmitting of electromagnetic waves is avoided.
The inside of drill collar main part 1 has been seted up and has been accomodate chamber 10, and the inside of accomodating chamber 10 is movably provided with rack plate 11, and protective housing 12 has been seted up to the outer wall of drill collar main part 1, and protective housing 12's inside transversely runs through and is provided with dwang 13 rotationally, and the inner of dwang 13 and the inside of accomodating chamber 10 are provided with rotating gear 14 with rack plate 11 engaged with, and the outside of rotating gear 14 bottom is provided with shielding piece 16.
The dwang 13 that sets up will drive the running gear 14 when rotating and rotate, will drive rack plate 11 when running gear 14 rotates and remove, will drive shielding piece 16 when rack plate 11 removes and expose, can shelter from installation piece 6 and bolt 8 through shielding piece 16 that exposes to avoid the contact of bolt 8 and installation piece 6 and the wall of a well, increase of service life improves the practicality.
The outer end of dwang 13 just is located the inside of protecting groove 12 and is provided with knob 15, and the plum blossom groove has been seted up in knob 15's the outside, and knob 15 of setting can make things convenient for operating personnel to rotate dwang 13.
The shape of shielding piece 16 sets up to the ring shape, and the material of shielding piece 16 sets up to cast stone material, and the ring shape of setting can be the annular and protect, and can wear-resisting corrosion-resistant again through the setting of cast stone material, and acidproof alkali-resistant moreover, hardness is big, easy gliding nature is good and resistance coefficient advantage such as little.
The utility model provides a along with boring borehole compensation electromagnetic wave resistivity measuring device's theory of operation as follows:
when the change is dismantled with lag 9 to needs, at first rotate knob 15, will drive dwang 13 when knob 15 rotates and rotate, will drive rolling gear 14 when dwang 13 rotates and rotate, will drive when rolling gear 14 rotates and accomodate the inside rack plate 11 in chamber 10 and remove, will drive when rack plate 11 removes and accomodate the inside shielding piece 16 in chamber 10 and accomodate, will make bolt 8 expose when shielding piece 16 is accomodate the back, can rotate bolt 8 through the instrument when bolt 8 exposes, make bolt 8 and thread groove 7 break away from, installation piece 6 can be dismantled and change after thread groove 7 breaks away from bolt 8, thereby can take off lag 9 and change.
Compared with the prior art, the utility model provides a well along with boring compensation electromagnetic wave resistivity measuring device has following beneficial effect:
the utility model provides a compensation electromagnetic wave resistivity measuring device follows boring, through installation piece 6, thread groove 7, bolt 8 and lag 9 constitute installation mechanism, can avoid using the screw thread to install through its installation mechanism, thereby make the protective housing can not appear being difficult to dismantle and the condition that drops when following drill collar main part 1 and rotate, thereby the safety of coil system has been guaranteed, the life of the device has been prolonged, in addition, through rack plate 11, protective housing 12, dwang 13, rotating gear 14 and shelter from 16 component protection machanisms of piece, can shelter from bolt 8 through its protection machanism, avoid the condition that the long-time frictional force of bolt 8 and the wall of a well appears the damage, in case the bolt 8 appears the damage will appear being difficult to dismantle the change with installation piece 6, consequently, the practicality is improved.
The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention can be used in other related technical fields, directly or indirectly, or in the same way as the present invention.
Claims (6)
1. The device for measuring the borehole compensation electromagnetic wave resistivity while drilling comprises a drill collar main body and is characterized in that:
the mounting groove is formed in the surface of the drill collar main body;
the coil slot is arranged on the inner wall of the mounting groove in a surrounding manner;
the receiving coil is arranged in the coil slot in a surrounding manner;
the transmitting coil is arranged in the coil slot in a surrounding manner, and the coil slot is positioned between the receiving coils;
a mounting block removably disposed within the drill collar body;
the thread groove is formed in the surface of the drill collar body;
the bolt can transversely penetrate through the mounting block in a rotatable manner, and is screwed with the thread groove;
the protection sleeve, the protection sleeve set up in the outside of installation piece, and the shape of protection sleeve sets up to the ring type.
2. The borehole compensation while drilling electromagnetic wave resistivity measurement device as claimed in claim 1, wherein the protective sleeve is made of a nonmagnetic stainless steel material, and an outer diameter of the protective sleeve matches with outer diameters of upper and lower ends of the drill collar body.
3. The device for measuring resistivity of borehole-while-drilling compensated electromagnetic waves as recited in claim 1, wherein the surfaces of the receiving coil and the transmitting coil are wrapped by insulating tapes, and insulating glue is filled between the insulating tapes and the receiving coil and the transmitting coil.
4. The borehole compensation while drilling electromagnetic wave resistivity measuring device as claimed in claim 1, wherein a receiving cavity is formed in the drill collar body, a rack plate is movably disposed in the receiving cavity, a protective groove is formed in an outer wall of the drill collar body, a rotating rod is rotatably and transversely arranged in the protective groove in a penetrating manner, a rotating gear engaged with the rack plate is disposed at an inner end of the rotating rod and in the receiving cavity, and a shielding plate is disposed at an outer side of a bottom end of the rotating gear.
5. The device for measuring resistivity of borehole compensation electromagnetic waves while drilling as recited in claim 4, characterized in that a knob is disposed at the outer end of the rotating rod and inside the protective groove, and a quincunx groove is disposed at the outer side of the knob.
6. The borehole compensation while drilling electromagnetic wave resistivity measurement device as claimed in claim 4, wherein the shielding plate is shaped as a circular ring, and the shielding plate is made of cast stone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120110953.9U CN214035635U (en) | 2021-01-15 | 2021-01-15 | Borehole compensation electromagnetic wave resistivity measuring device while drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120110953.9U CN214035635U (en) | 2021-01-15 | 2021-01-15 | Borehole compensation electromagnetic wave resistivity measuring device while drilling |
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| Publication Number | Publication Date |
|---|---|
| CN214035635U true CN214035635U (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120110953.9U Active CN214035635U (en) | 2021-01-15 | 2021-01-15 | Borehole compensation electromagnetic wave resistivity measuring device while drilling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508313A (en) * | 2022-03-10 | 2022-05-17 | 中海油田服务股份有限公司 | Drill collar |
-
2021
- 2021-01-15 CN CN202120110953.9U patent/CN214035635U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508313A (en) * | 2022-03-10 | 2022-05-17 | 中海油田服务股份有限公司 | Drill collar |
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