SU641877A3 - Method of transmitting signals in drilling pipe - Google Patents

Method of transmitting signals in drilling pipe

Info

Publication number
SU641877A3
SU641877A3 SU742057039A SU2057039A SU641877A3 SU 641877 A3 SU641877 A3 SU 641877A3 SU 742057039 A SU742057039 A SU 742057039A SU 2057039 A SU2057039 A SU 2057039A SU 641877 A3 SU641877 A3 SU 641877A3
Authority
SU
USSR - Soviet Union
Prior art keywords
signal
carrier signal
transmitting signals
drill pipe
drilling pipe
Prior art date
Application number
SU742057039A
Other languages
Russian (ru)
Inventor
Недл Шаэн Элберт
Original Assignee
Сан Ойл Компани Оф Пенсильвания (Фирма)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Сан Ойл Компани Оф Пенсильвания (Фирма) filed Critical Сан Ойл Компани Оф Пенсильвания (Фирма)
Application granted granted Critical
Publication of SU641877A3 publication Critical patent/SU641877A3/en

Links

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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/02—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
    • 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
    • E21B47/16—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 drill string or casing, e.g. by torsional acoustic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geophysics (AREA)
  • Remote Sensing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Earth Drilling (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Description

дойдет до приемника 11, сигнал с которого по кабелю 12 поступает на регистратор 13.will reach the receiver 11, the signal from which via cable 12 enters the recorder 13.

Допустим, что повторитель 6 получает сигнал с частотой ив ответ на него посылает сигнал с частотой (). Этот сигнал, распростран  сь в обоих направлени х, достигает повторителей 5 и 7 приблизительно одновременно и с одинаковой амплитудой. Однако только повторитель 7 может принимать частоту { , а. повторитель 5 принимает только частоту . В нежелаемом направлении передачи частоту fe может принимать только повторитель 4. Но сигнал при этом должен пройти путь в два раза больший,чем в желаемом направлении. Поэтому сигнал ослабл етс  значительно больше, чем снижаетс  величина обратной св зи и ретрансл ци  сигнала, распростран ющегос  в нежелаемом направлении. При способе с двум  частотами надежной изол ции повторителей 15 паразитных сигналов достигнуть не удаетс .Suppose that repeater 6 receives a signal with a frequency and in response to it sends a signal with a frequency (). This signal, propagating in both directions, reaches repeaters 5 and 7 approximately simultaneously and with the same amplitude. However, only repeater 7 can take the frequency {, a. repeater 5 only accepts frequency. In the undesired direction of the transmission, only the repeater 4 can receive the frequency fe. But the signal must go two times larger than in the desired direction. Therefore, the signal is attenuated significantly more than the amount of feedback and retransmission of the signal propagating in the undesired direction is reduced. With the two-frequency method, reliable isolation of the repeaters 15 of the parasitic signals cannot be achieved.

Таким образом, по сравнению t известными решени ми -той же задачи предложенный способ имеет существенные преимущества .Thus, in comparison with known solutions of the same problem, the proposed method has significant advantages.

Claims (3)

1.Способ передачи сигналов в бурильной трубе путем модул ции сигнала в одной точке бурильной трубы, акустической передачн модулированного сигнала по бурильной трубе, повторени  несущего сигнала и изменени  его типа, а также приема и демодул ции несущего сигнала в другой точке, отличающийс  тем, что, с целью обеспечени  правильной передачи сигналов, несущий сигнал измен ют, по меньшей мере, два раза в различные типы каждый раз.1. A method of transmitting signals in a drill pipe by modulating a signal at one point of the drill pipe, acoustic transmission-modulated signal through the drill pipe, repeating the carrier signal and changing its type, as well as receiving and demodulating the carrier signal at another point, characterized in that In order to ensure the correct transmission of signals, the carrier signal is changed at least twice to different types each time. 2.Способ по п. I, отличающийс  тем, что измен ют частоту несущего сигнала.2. A method according to claim I, characterized in that the frequency of the carrier signal is changed. 3.Способ по пп. 1 и 2, отличающийс  тем, что примен ют три частоты.3. Method according to paragraphs. 1 and 2, characterized in that three frequencies are used. Источники информации, прин тые во внимание при экспертизе:Sources of information taken into account in the examination: I. Патент США № 3205477, кл. 340-18, 1967.I. US patent No. 3205477, CL. 340-18, 1967.
SU742057039A 1973-08-23 1974-08-22 Method of transmitting signals in drilling pipe SU641877A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39083373A 1973-08-23 1973-08-23

Publications (1)

Publication Number Publication Date
SU641877A3 true SU641877A3 (en) 1979-01-05

Family

ID=23544125

Family Applications (1)

Application Number Title Priority Date Filing Date
SU742057039A SU641877A3 (en) 1973-08-23 1974-08-22 Method of transmitting signals in drilling pipe

Country Status (18)

Country Link
JP (1) JPS5051352A (en)
AT (1) AT349220B (en)
AU (1) AU7261874A (en)
BE (1) BE819007A (en)
CA (1) CA1028046A (en)
DE (1) DE2440538A1 (en)
DK (1) DK136490B (en)
ES (1) ES429478A1 (en)
FR (1) FR2303153A1 (en)
GB (1) GB1476990A (en)
HK (1) HK27478A (en)
IL (1) IL45254A (en)
IN (1) IN142419B (en)
IT (1) IT1020134B (en)
NL (1) NL7411193A (en)
NO (1) NO141285C (en)
SE (1) SE408320B (en)
SU (1) SU641877A3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1098202A (en) * 1976-12-30 1981-03-24 Preston E. Chaney Telemetry system
FR2519687B1 (en) * 1982-01-12 1987-10-02 Orszagos Koolaj Gazipari REINSERABLE AND WATERPROOF DEVICE FOR HANGING PROBE FILTER AND TUBING ELEMENT
GB2117948A (en) * 1982-03-22 1983-10-19 Ml Aviation Co Ltd Initiation of devices by high- frequency sound waves
DE3916704A1 (en) * 1989-05-23 1989-12-14 Wellhausen Heinz SIGNAL TRANSMISSION IN DRILL RODS
US7197932B2 (en) * 2000-09-04 2007-04-03 The Nippon Signal Co, Ltd. Failure detecting system
EP2815072A4 (en) * 2012-04-23 2016-11-23 Halliburton Energy Services Inc Simultaneous data transmission of multiple nodes
EP2859185A4 (en) * 2012-06-07 2016-06-08 California Inst Of Techn Communication in pipes using acoustic modems that provide minimal obstruction to fluid flow

Also Published As

Publication number Publication date
SE408320B (en) 1979-06-05
IT1020134B (en) 1977-12-20
IL45254A0 (en) 1974-10-22
BE819007A (en) 1975-02-20
NO141285B (en) 1979-10-29
CA1028046A (en) 1978-03-14
FR2303153B1 (en) 1982-09-10
GB1476990A (en) 1977-06-16
ATA679974A (en) 1978-08-15
IN142419B (en) 1977-07-02
JPS5051352A (en) 1975-05-08
FR2303153A1 (en) 1976-10-01
DK136490B (en) 1977-10-17
DE2440538A1 (en) 1975-03-06
ES429478A1 (en) 1977-01-16
AT349220B (en) 1979-03-26
NL7411193A (en) 1975-02-25
DK449274A (en) 1975-04-21
DK136490C (en) 1978-03-13
NO141285C (en) 1980-02-06
IL45254A (en) 1976-11-30
NO743027L (en) 1975-03-24
HK27478A (en) 1978-06-09
AU7261874A (en) 1976-02-26
SE7409468L (en) 1975-02-24

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