CN108756863A - A method of improving electromagnetic measurement while drilling signal transmission distance using becket - Google Patents
A method of improving electromagnetic measurement while drilling signal transmission distance using becket Download PDFInfo
- Publication number
- CN108756863A CN108756863A CN201810351189.7A CN201810351189A CN108756863A CN 108756863 A CN108756863 A CN 108756863A CN 201810351189 A CN201810351189 A CN 201810351189A CN 108756863 A CN108756863 A CN 108756863A
- Authority
- CN
- China
- Prior art keywords
- metal ring
- ring electrode
- cable
- reception device
- drilling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 34
- 238000005259 measurement Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000008054 signal transmission Effects 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 48
- 229910052751 metal Inorganic materials 0.000 claims abstract description 48
- 239000004568 cement Substances 0.000 claims abstract description 16
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 27
- 229910003460 diamond Inorganic materials 0.000 claims description 13
- 239000010432 diamond Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 9
- 239000003973 paint Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 210000002445 nipple Anatomy 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 235000019580 granularity Nutrition 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007921 spray Substances 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
- 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
- E21B47/13—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 by electromagnetic energy, e.g. radio frequency
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The present invention provides a kind of method improving electromagnetic measurement while drilling signal transmission distance using becket, and steps are as follows：It is coated with electric insulation layer in the inner surface of metal ring electrode；Metal ring electrode is set in the outside of casing, and and cable connection；Casing is lowered into the certain position of drilling well；After casing is provided with, cement injection well cementation, and cable is locked in well；Arrange ground signal reception device, when the quantity of metal ring electrode is one, one end of ground signal reception device is connect by cable with metal ring electrode, the other end of ground signal reception device is connect by cable with grounding electrode, grounding electrode is inserted into ground；When the quantity of metal ring electrode is two, one end of ground signal reception device is connect by cable with the metal ring electrode positioned at casing part, the other end of ground signal reception device is connect by cable with the metal ring electrode positioned at casing top.
Description
Technical field
The present invention relates to electromagnetic measurement while drilling technical fields more particularly to a kind of utilization becket to improve electromagnetic wave while-drilling and survey
The method for measuring signal transmission distance.
Background technology
Electromagnetic measurement while drilling (EM-MWD) is a new technology for entering industrial applications the 1980s, is not recycled
The limitation of medium, pump amount and termination of pumping can be not only used for mud drilling, and can be used for foam, air drilling.Due to EM-
MWD signals are decayed seriously in the earth formation, and current routine EM-MWD fathoms generally less than 3Km, limit the relevant technologies compared with
Popularization and application in deep well borehole.To find out its cause, mainly since ground receiver electrode is generally located on drill string and neighbouring ground
On, receiving electrode both ends distance is closer, and farther out with underground signal emitter distance so that feeds back to the voltage pole on ground
It is small, it is difficult to realize the reception of signal.
Invention content
In view of this, terrestrial reception signal intensity, signal transmission distance can be effectively improved the present invention provides a kind of
The method for improving electromagnetic measurement while drilling signal transmission distance using becket.
The present invention provides a kind of method improving electromagnetic measurement while drilling signal transmission distance using becket, including following
Step：
S1 is coated with electric insulation layer in the inner surface of metal ring electrode；
The metal ring electrode of step S1, is set in the outside of casing by S2, and by the metal ring electrode and cable connection；
Described sleeve pipe is lowered into the certain position of drilling well by S3；
S4, after described sleeve pipe is provided with, cement injection well cementation, and cable is locked in well；
S5 arranges ground signal reception device, and when the quantity of the metal ring electrode is one, ground signal is received
One end of device is connect by cable with metal ring electrode, and the other end of ground signal reception device is passed through cable and ground connection electricity
Pole connects, and grounding electrode is inserted into ground；When the quantity of the metal ring electrode is two, by the one of ground signal reception device
End is connect by cable with positioned at the metal ring electrode of casing part, by the other end of ground signal reception device by cable and
Metal ring electrode positioned at casing top connects；
S6, the ground signal reception device is by measuring potential difference or measurement between metal ring electrode and grounding electrode
The electromagnetic wave signal under potential difference received well between two metal ring electrodes.
Further, in step S1, the electric insulation layer is using high-temperature insulating paint or insulating cement and diamond mixing material
Material sprays.
Further, the spraying method of the high-temperature insulating paint be using hairbrush even spread 2 times, the insulating cement with
The volume ratio of diamond particles and insulating cement is 1 in diamond mixing material:2~1:5, the granularities of diamond particles is 100~
200 mesh.
Further, the metal ring electrode is cast iron device for hooping, the ring width of the cast iron device for hooping is 1~
10cm is highly 1~20cm, and the cast iron device for hooping is equipped with bolt, so that cast iron device for hooping is arranged by fastening bolt
In the outside of casing.
Further, in step S3, casing is lowered at 0~100m away from well cementation section bottom or away from 8~1000m of well head
Place.
Further, in step S5, distance of the grounding electrode apart from well head is 50~100m, and the grounding electrode is inserted
The depth for entering ground is 0.1~10m.
Further, the ground signal reception device connects computer, and the ground signal reception device will receive
Electromagnetic wave signal be sent to computer, after the computer receives electromagnetic wave signal, handled according to electromagnetic wave signal and aobvious
Show the information that shaft bottom measurement obtains.
The advantageous effect that technical solution provided by the invention is brought is：
1, method provided by the invention is easy to operate, of low cost, with the external metal ring electrode of casing by cable pulling extremely
Section of cementing the well bottom, it is easy to accomplish field application；
2, method provided by the invention exists the electrode setting of traditional setting on the ground by using metal ring electrode
Underground is applied in electromagnetic measurement while drilling, can shorten grounding electrode at a distance from underground signal emitter, increase simultaneously
The distance of two interpolar of ground signal reception device, can effectively improve terrestrial reception signal intensity, to improve electromagnetic wave while-drilling
The transmission range of measuring signal.
Description of the drawings
Fig. 1 is that a kind of flow for the method being improved electromagnetic measurement while drilling signal transmission distance using becket of the present invention is shown
It is intended to.
Fig. 2 is the electromagnetic measurement while drilling system schematic of the embodiment of the present invention 1.
Fig. 3 is the electromagnetic measurement while drilling system schematic of the embodiment of the present invention 2.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is further described.
Referring to FIG. 1, improving electromagnetic measurement while drilling signal biography using becket the embodiment provides a kind of
The method of defeated distance, includes the following steps：
Step S1 is coated with electric insulation layer in the inner surface of metal ring electrode, and electric insulation layer is using high-temperature insulating paint or absolutely
Edge glue is sprayed with diamond mixing material, wherein also take in the fresh material Science and Technology Ltd. in high-temperature insulating paint selection Guangzhou
Any one of GN-203A, GN-203AW, GN-203B or GN-203C coating series, using soft or hard medium hair when spraying
Brush even spread 2 times, it is next time i.e. sprayable after doing solid work for one time；In insulating cement and diamond mixing material diamond particles with absolutely
The volume ratio of edge glue is 1:2~1:5, the granularity of diamond particles is 100~200 mesh, and insulating cement long-time high temperature resistant is not less than
200 DEG C, insulating cement selects the poly- 200 degree of epoxy resin AB glues of power high temperature resistant of JL-510, resistance to 280 degree of the poly- power of JL-528 in electric insulation layer
The resistance to 400 degree of high-temp glues of the poly- power of high-temp epoxy AB glue, JL-6103, the poly- power high temperature resistant diamond matrix bonded adhesives of JL-6134, JL-
Any one of the resistance to 450 degree of high-temperature seal adhesives of 747 poly- power or the poly- power high temperature resistant electronics conduction heat sealable glue of JL-908.
Metal ring electrode, is set in outside and the set pipe insulation of casing by step S2, and metal ring electrode and cable are connected
It connects.
In one embodiment, using cast iron device for hooping as metal ring electrode, cast iron device for hooping is equipped with bolt, is casting
After the inner surface coating electric insulation layer of iron device for hooping, it is set in the outside of casing and fastening bolt guarantee is not fallen, cast
The internal diameter of iron device for hooping is slightly larger than the outer diameter of casing used, and ring width is 1~10cm, is highly 1~20cm, and outer diameter is less than casing
The outer diameter of centralizer, to reduce the abrasion in cable tripping in process medium cast iron device for hooping and cable.
Casing is lowered at 0~100m away from well cementation section bottom or away from 8~1000m of well head, draws simultaneously by step S3
Cable reaches underground designated position, which is the height where metal ring electrode.
Step S4, after casing is provided with, cement injection well cementation, and cable is locked in well.
Step S5 arranges ground signal reception device, and when the quantity of the metal ring electrode used is one, ground is believed
One end of number reception device is connect by cable with metal ring electrode, metal ring electrode distance well cementation section 0~100m of bottom, by ground
The other end of face signal receiving device is connect by cable with grounding electrode, by grounding electrode deeply be inserted into ground, depth be 0.1~
10m；When the quantity of the metal ring electrode used is two, by one end of ground signal reception device by cable and positioned at set
The metal ring electrode of pipe lower part connects, and the other end of ground signal reception device and the metal ring electrode positioned at casing top are connected
It connects, the metal ring electrode positioned at casing part is arranged at 0~100m away from well cementation section bottom, is located at the becket on casing top
Electrode is arranged at 8~1000m away from well head, and the metal ring electrode positioned at casing top and the becket positioned at casing part
The distance between electrode is not less than 10m.
Step S6, electromagnetic measurement while drilling system work when, ground signal reception device by measure metal ring electrode with
The electromagnetic wave signal under the potential difference received well between two metal ring electrodes of potential difference or measurement between grounding electrode, ground
Signal receiving device connects computer, and the electromagnetic wave signal received is sent to computer by ground signal reception device, calculates
After machine receives electromagnetic wave signal, the information obtained with display shaft bottom measurement is handled according to electromagnetic wave signal.
Method provided by the invention is described in detail with reference to embodiment.
Embodiment 1：
With reference to figure 2, a cast iron device for hooping 1 is selected, is coated with electric insulation layer in the inner surface of cast iron device for hooping 1, so
Cast iron device for hooping 1 is securely set in the outside of casing 2 afterwards, and cast iron device for hooping 1 is connect with one end of cable；It will set
Pipe 2 is lowered at the 80m away from well cementation section bottom, while trailing cable reaches the height where cast iron device for hooping 1；In casing 2
It is provided with post-infusion cement slurry well cementation, cable is locked in well；It arranges ground signal reception device 4, ground signal is received
One end of device 4 is connect by cable with cast iron device for hooping 1, the other end of ground signal reception device 4 by cable with from
The grounding electrode 3 of 50~100m of well head connects, and grounding electrode 3 is deep to be inserted into ground 6m；When electromagnetic measurement while drilling system works, well
It is lower transmitting pipe nipple 6 ballistic device driving source with insulating short section be barrier, transmitting pipe nipple 6, upper drilling string 7, stratum and under
Current loop is formed in portion's drill string；Down-hole information, ground letter are transmitted in the form of an electromagnetic wave around the magnetic field that current loop generates
Number reception device 4 passes through the potential difference between the external cast iron device for hooping 1 and grounding electrode 3 that measure casing 2 to receive electromagnetism
Wave signal, and handled by computer 5 and measure the information of gained with shaft bottom is shown.
Embodiment 2：
With reference to figure 3, two cast iron device for hooping 1 are selected, electric insulation layer is coated in the inner surface of cast iron device for hooping 1, it will
Two cast iron device for hooping 1 are securely set in the outside of casing 2 respectively, and the vertical distance of two cast iron device for hooping 1 is 50m,
Then by two cast iron device for hooping 1 respectively with two cable connections；Casing 2 is lowered at the 65m away from well cementation section bottom, together
When two cables of traction arrive separately at the position where two cast iron device for hooping 1；It is solid it to be provided with post-infusion cement slurry in casing 2
Two cables are locked in cement sheath by well；It arranges ground signal reception device 4, one end of ground signal reception device 4 is led to
It crosses cable to connect with the cast iron device for hooping 1 positioned at casing part, the other end of ground signal reception device 4 passes through cable and position
Cast iron device for hooping 1 in casing top connects；When electromagnetic measurement while drilling system works, underground emits the transmitter of pipe nipple 6
The driving source of part is barrier with insulating short section, and forming electric current in transmitting pipe nipple 6, upper drilling string 7, stratum and lower drilling string returns
Road；Down-hole information is transmitted in the form of an electromagnetic wave around the magnetic field that current loop generates, and ground signal reception device 4 passes through measurement
Potential difference between two cast iron device for hooping 1 is handled by computer 5 to receive electromagnetic wave signal and is shown shaft bottom measurement institute
The information obtained.
Method provided by the invention is easy to operate, of low cost, with the external metal ring electrode of casing by cable pulling to admittedly
Well section bottom, it is easy to accomplish field application；Method provided by the invention is by using metal ring electrode by traditional setting
Electrode setting on the ground is applied in underground in electromagnetic measurement while drilling, can shorten grounding electrode and be sent out with underground signal
The distance of injection device, while increasing the distance of two interpolar of ground signal reception device, it is strong terrestrial reception signal can be effectively improved
Degree, to improve the transmission range of electromagnetic measurement while drilling signal.
Herein, the nouns of locality such as involved front, rear, top, and bottom are to be located in figure with parts in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of method improving electromagnetic measurement while drilling signal transmission distance using becket, which is characterized in that including following
Step：
S1 is coated with electric insulation layer in the inner surface of metal ring electrode；
The metal ring electrode of step S1, is set in the outside of casing by S2, and by the metal ring electrode and cable connection；
Described sleeve pipe is lowered into the certain position of drilling well by S3；
S4, after described sleeve pipe is provided with, cement injection well cementation, and cable is locked in well；
S5 arranges ground signal reception device, when the quantity of the metal ring electrode is one, by ground signal reception device
One end connect with metal ring electrode by cable, the other end of ground signal reception device, which is passed through cable and grounding electrode, to be connected
It connects, grounding electrode is inserted into ground；When the quantity of the metal ring electrode is two, one end of ground signal reception device is led to
Cable is crossed to connect with positioned at the metal ring electrode of casing part, by the other end of ground signal reception device by cable be located at
The metal ring electrode on casing top connects；
S6, the ground signal reception device is by measuring potential difference or measurement two between metal ring electrode and grounding electrode
The electromagnetic wave signal under potential difference received well between metal ring electrode.
2. the method for improving electromagnetic measurement while drilling signal transmission distance using becket as described in claim 1, feature
It is, in step S1, the electric insulation layer is sprayed using high-temperature insulating paint or insulating cement with diamond mixing material.
3. the method for improving electromagnetic measurement while drilling signal transmission distance using becket as claimed in claim 2, feature
It is, the spraying method of the high-temperature insulating paint is using hairbrush even spread 2 times, the insulating cement and diamond mixing material
The volume ratio of diamond particles and insulating cement is 1 in material:2~1:5, the granularity of diamond particles is 100~200 mesh.
4. the method for improving electromagnetic measurement while drilling signal transmission distance using becket as described in claim 1, feature
Be, the metal ring electrode is cast iron device for hooping, and the ring width of the cast iron device for hooping is 1~10cm, highly for 1~
20cm, the cast iron device for hooping are equipped with bolt, so that cast iron device for hooping is set in the outside of casing by fastening bolt.
5. the method for improving electromagnetic measurement while drilling signal transmission distance using becket as described in claim 1, feature
It is, in step S3, casing is lowered at 0~100m away from well cementation section bottom or away from 8~1000m of well head.
6. the method for improving electromagnetic measurement while drilling signal transmission distance using becket as described in claim 1, feature
It is, in step S5, distance of the grounding electrode apart from well head is 50~100m, and the grounding electrode is inserted into the depth on ground
For 0.1~10m.
7. the method for improving electromagnetic measurement while drilling signal transmission distance using becket as described in claim 1, feature
It is, the ground signal reception device connects computer, the electromagnetic wave signal that the ground signal reception device will receive
It is sent to computer, after the computer receives electromagnetic wave signal, is handled according to electromagnetic wave signal and is measured with shaft bottom is shown
The information arrived.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810351189.7A CN108756863A (en) | 2018-04-18 | 2018-04-18 | A method of improving electromagnetic measurement while drilling signal transmission distance using becket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810351189.7A CN108756863A (en) | 2018-04-18 | 2018-04-18 | A method of improving electromagnetic measurement while drilling signal transmission distance using becket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108756863A true CN108756863A (en) | 2018-11-06 |
Family
ID=64011097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810351189.7A Pending CN108756863A (en) | 2018-04-18 | 2018-04-18 | A method of improving electromagnetic measurement while drilling signal transmission distance using becket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108756863A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173504A (en) * | 2019-12-31 | 2020-05-19 | 中国地质大学（武汉） | Adjacent well distance electromagnetic while drilling large-range detection system without interference on adjacent well operation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050046589A1 (en) * | 2003-08-27 | 2005-03-03 | Wisler Macmillian M. | Electromagnetic borehole telemetry system incorporating a conductive borehole tubular |
| CN1657742A (en) * | 2004-02-16 | 2005-08-24 | 中国石油勘探开发研究院钻井工艺研究所 | Electromagnetic telemetering method and system of measuring by bit |
| CN102767363A (en) * | 2012-07-11 | 2012-11-07 | 中国地质大学（武汉） | Electric communication drill rod and method for increasing transmission distance of electromagnetic wave measurement while drilling signal |
| US20140320301A1 (en) * | 2011-11-11 | 2014-10-30 | Expro North Sea Limited | Downhole structure sections |
| CN104614439A (en) * | 2015-02-03 | 2015-05-13 | 中国石油化工股份有限公司胜利油田分公司技术检测中心 | Nondestructive detection device and method based on electric-field fingerprinting method |
| WO2016060678A1 (en) * | 2014-10-17 | 2016-04-21 | Halliburton Energy Services, Inc. | Well monitoring with optical electromagnetic sensing system |
| US9803473B2 (en) * | 2015-10-23 | 2017-10-31 | Schlumberger Technology Corporation | Downhole electromagnetic telemetry receiver |
| US20170350239A1 (en) * | 2015-03-11 | 2017-12-07 | Halliburton Energy Services, Inc. | Downhole Communications Using Variable Length Data Packets |
-
2018
- 2018-04-18 CN CN201810351189.7A patent/CN108756863A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050046589A1 (en) * | 2003-08-27 | 2005-03-03 | Wisler Macmillian M. | Electromagnetic borehole telemetry system incorporating a conductive borehole tubular |
| CN1657742A (en) * | 2004-02-16 | 2005-08-24 | 中国石油勘探开发研究院钻井工艺研究所 | Electromagnetic telemetering method and system of measuring by bit |
| US20140320301A1 (en) * | 2011-11-11 | 2014-10-30 | Expro North Sea Limited | Downhole structure sections |
| CN102767363A (en) * | 2012-07-11 | 2012-11-07 | 中国地质大学（武汉） | Electric communication drill rod and method for increasing transmission distance of electromagnetic wave measurement while drilling signal |
| WO2016060678A1 (en) * | 2014-10-17 | 2016-04-21 | Halliburton Energy Services, Inc. | Well monitoring with optical electromagnetic sensing system |
| CN104614439A (en) * | 2015-02-03 | 2015-05-13 | 中国石油化工股份有限公司胜利油田分公司技术检测中心 | Nondestructive detection device and method based on electric-field fingerprinting method |
| US20170350239A1 (en) * | 2015-03-11 | 2017-12-07 | Halliburton Energy Services, Inc. | Downhole Communications Using Variable Length Data Packets |
| US9803473B2 (en) * | 2015-10-23 | 2017-10-31 | Schlumberger Technology Corporation | Downhole electromagnetic telemetry receiver |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173504A (en) * | 2019-12-31 | 2020-05-19 | 中国地质大学（武汉） | Adjacent well distance electromagnetic while drilling large-range detection system without interference on adjacent well operation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9970288B2 (en) | Receiving apparatus for downhole near-bit wireless transmission | |
| US10428646B2 (en) | Apparatus for downhole near-bit wireless transmission | |
| CN201232545Y (en) | Downhole wireless electromagnetical signal radiation apparatus while drilling | |
| AU2006344741B2 (en) | Antenna cutout in a downhole tubular | |
| CN100501121C (en) | Extra-low frequency or ultra-low frequency electromagnetic wave two-ways remote controlling sensing system while-drilling | |
| CN102767363B (en) | Electric communication drill rod and method for increasing transmission distance of electromagnetic wave measurement while drilling signal | |
| CN111173504B (en) | Adjacent well distance electromagnetic while drilling large-range detection system without interference on adjacent well operation | |
| CN101291015A (en) | Electromagnetic emitting antenna along with drill, down-hole data communication system and method | |
| CN103912264A (en) | Near-bit logging-while-drilling resistivity measuring device | |
| CN109667550B (en) | Active distance measurement system and method for cluster well collision prevention | |
| CN105874163B (en) | Well drilling auxiliary system | |
| CN108756863A (en) | A method of improving electromagnetic measurement while drilling signal transmission distance using becket | |
| US11965415B2 (en) | Method of extending a borehole of a relief well, bottomhole assembly, drill string, and other apparatus | |
| US20180179828A1 (en) | Oil and gas well drill pipe electrical and communication assembly | |
| RU2401378C1 (en) | Method of drilling inclined and horizontal well bores | |
| CN103573259B (en) | A kind of dipole antenna pipe nipple of electromagnetic measurement while drilling system | |
| CN103835705A (en) | Underground measurement information transmission system | |
| CN108278108A (en) | A kind of nearly drill bit in underground is wireless short pass system and its working method | |
| CN103917732A (en) | Drill bit for performing electromagnetic measurements in a subterranean formation | |
| CN114622900A (en) | Underground information transmission device and method based on micro-current | |
| CN206299374U (en) | A kind of reception device suitable for the underground wireless short pass of nearly drill bit | |
| CN205977206U (en) | Transmitter that can be used to acoustic logging while drilling | |
| CN202954809U (en) | Underground metrical information transmission system | |
| CN115749751A (en) | Cross-screw wireless transmission system | |
| CN104863573B (en) | A kind of insulating short section and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181106 |