CN101737035A - Method and device for transmitting wireless data at bottom of continuous oil pipe operation well - Google Patents

Abstract

The invention discloses a method and a device for wireless data transmission at the bottom of a coiled tubing operation well, which relate to the technical field of underground construction in the petroleum and gas industry, and are characterized in that underground construction data are collected by an underground construction detector in the well; the collected construction data are coded and converted into electric wave signal strings, and the electric wave signal strings are converted into sound wave vibration signals by using a sound wave generator; collecting the sound wave vibration signals by adopting a sound wave sensor on the ground, decoding and reducing the sound wave vibration signals into underground construction data, and transmitting the underground construction data to a monitoring computer; the sound wave vibration signal in the well is transmitted to the sound wave sensor on the ground by taking the coiled tubing body as a transmission channel. The invention solves the technical problem that wired data transmission cannot be used in coiled tubing operation, can obtain the position data of the downhole tool in real time, and can be widely applied to the fields of coiled tubing production increasing operation, coiled tubing perforation, coiled tubing drilling, horizontal well downhole testing, downhole production data monitoring and the like.

Description

Continuous oil pipe operation pit bottom wireless data transmission method and device

Technical field

The present invention relates to industrial gas oil down-hole technical field of construction, exactly relate to the radio transmission technical field of shaft bottom construction data in oil gas well coiled tubing operation process.

Background technology

The wireless tranmission techniques of the collection of shaft bottom construction data and real time data is the important means that improves the coiled tubing construction technology, improves efficiency of construction in the coiled tubing operation.

In coiled tubing underground work process, obtain the coiled tubing downhole tool in real time, as the accurate position of Downhole jetting acidifying instrument, downhole packer and downhole testing instrument etc. the success or failure of operation are had material impact: notice of authorization number is CN2727394Y, notice of authorization day is that the Chinese patent literature in September 21 in 2005 discloses a kind of device of testing machine-pumped oil well shaft bottom formation pressure, temperature, especially a kind of direct-reading machine-pumped oil well long-term dynamics monitoring device.This direct-reading machine-pumped oil well long-term dynamics monitoring device mainly comprises data processes and displays instrument, transfer wire and pressure and temp instrument, transfer wire is installed under normal operation between the oil pipe and sleeve pipe of machine-pumped oil well, the transfer wire upper end joins by the valve hole of sleeve pipe one side and the data processes and displays instrument on the well head, and the pressure and temp instrument in the lower end of transfer wire and the shaft bottom oil reservoir joins.Its beneficial effect is: direct-reading machine-pumped oil well long-term dynamics monitoring device can have under the power free situation at this well works, and the data acquisition capacity is big, and maximum can reach 6000 points, and can be stored on the disk, is beneficial to the playback and the analysis of data; Transfer wire is high temperature resistant, 170 ℃ of high-temperature resistants, and acid and alkali-resistance, in the oil product medium, transfer wire can be worked more than 2 years under the normal operation.

Fluid media (medium) also may be discontinuous in cable data transmission, the coiled tubing owing to can not use when the coiled tubing operation is most, can't use the measuring while drilling technology of drilling well circle.Therefore, technique scheme is obviously inapplicable, can not obtain the downhole tool position data in real time, and the transfer wire of technique scheme is perishable impaired, thereby influences the data acquisition effect, needs often to change, and is not easy to maintenance management.

Summary of the invention

For solving the problems of the technologies described above, the present invention proposes a kind of continuous oil pipe operation pit bottom wireless data transmission method, the invention solves the technical barrier that can not use the cable data transmission in the coiled tubing operation, and can obtain the downhole tool position data in real time, the present invention can be widely used in fields such as coiled tubing stimulation work, coiled tubing perforation, coiled tubing drilling, horizontal well downhole testing, downhole production data monitoring.

The present invention provides the device of realizing this method simultaneously.

The present invention realizes by adopting following technical proposals:

A kind of continuous oil pipe operation pit bottom wireless data transmission method is characterized in that:

1), utilizes construction data under the down-hole construction detector production wells in the down-hole; The construction data coding of gathering is converted into the electric wave signal string, utilizes sonic generator that the electric wave signal string is converted into acoustic vibration signal;

2) on ground, adopt sonic sensor to gather described acoustic vibration signal, acoustic vibration signal transfers to monitoring computer after decoding is reduced to the down-hole construction data;

The acoustic vibration signal of down-hole is to be the sonic sensor that transmission channel is sent to ground by the coiled tubing body.

Also have the signal amplification procedure in sonic sensor collection acoustic vibration signal step and acoustic vibration signal between decoding step, the acoustic vibration signal that is about to the sonic sensor collection carries out filter amplifying processing through signal amplifier.

It is the data encoder that adopts that the construction data coding is converted into the electric wave signal string.

Acoustic vibration signal be decoded as the sonic data decoder.

Realize the device of continuous oil pipe operation pit bottom wireless data transmission method, it is characterized in that comprising:

1) is arranged at down-hole and be used for the construction detector of construction data under the production wells, be connected with described construction monitoring instrument and construction data coding in down-hole is converted into the data encoder of electric wave signal string, with the sonic generator that is connected and the electric wave signal string is converted into acoustic vibration signal with encoder;

2) be arranged at ground and be used to gather the sonic sensor of described acoustic vibration signal, be connected with described sonic sensor and the acoustic vibration signal decoding is reduced to the sonic data decoder of down-hole construction data and monitoring computer;

Signal transmission passage between down-hole sonic generator and the ground sonic sensor is the coiled tubing body.

Between described sonic sensor and sonic data decoder, also be connected with the signal amplifier that acoustic vibration signal is carried out filter amplifying processing.

Connect promising its on the construction detector high-temperature battery group of power supply is provided.

Advantage of the present invention shows:

1, because the present invention adopts the down-hole construction data that obtains in the down-hole, encoded and be converted to acoustic vibration signal after, be that signal transmission passage is sent to ground just with the coiled tubing body, and receive by the sonic sensor on ground, decoding is reduced to the down-hole construction data and is finally obtained by monitoring computer, such technical scheme compared with prior art, it is signal transmission passage that the present invention adopts the coiled tubing body, reached the wireless transmission purpose of down-hole construction data, solved the technical barrier that can not use the cable data transmission in the coiled tubing operation, and can obtain the downhole tool position data in real time, can be widely used in the coiled tubing stimulation work, the coiled tubing perforation, coiled tubing drilling, the horizontal well downhole testing, fields such as downhole production data monitoring.

2, the present invention also has the signal amplification procedure at sonic sensor collection acoustic vibration signal and acoustic vibration signal between decoding, so just can make acoustic vibration signal stronger, and the down-hole construction data of decoding reduction is also more accurate.

Description of drawings

The present invention is described in further detail below in conjunction with specification drawings and specific embodiments, wherein:

Fig. 1 is a signal transmission structure schematic diagram of the present invention

Mark among the figure:

1, construction detector, 2, the high-temperature battery group, 3, data encoder, 4, sonic generator, 5, the coiled tubing body, 6, sonic sensor, 7, the sonic data decoder, 8, monitoring computer.

The specific embodiment

Embodiment 1

The invention discloses a kind of continuous oil pipe operation pit bottom wireless data transmission method,

1), utilizes construction data under down-hole construction detector 1 production wells in the down-hole; The construction data coding of gathering is converted into the electric wave signal string, utilizessonic generator 4 that the electric wave signal string is converted into acoustic vibration signal;

2) on ground, adopt sonic sensor 6 to gather described acoustic vibration signal, acoustic vibration signal transfers to monitoring computer 8 after decoding is reduced to the down-hole construction data;

The acoustic vibration signal of down-hole is the sonic sensor 6 that is sent to ground by coiledtubing body 5 for transmission channel.Also have the signal amplification procedure in sonic sensor 6 collection acoustic vibration signal steps and acoustic vibration signal between decoding step, the acoustic vibration signal that is about to sonic sensor 6 collections carries out filter amplifying processing through signal amplifier.It is the data encoder 3 that adopts that the construction data coding is converted into the electric wave signal string.Acoustic vibration signal be decoded assonic data decoder 7.

Embodiment 2

With reference to Figure ofdescription 1, the invention discloses the device of realizing the continuous oil pipe operation pit bottom wireless data transmission method, comprising:

1) is arranged at down-hole and be used for theconstruction detector 1 of construction data under the production wells, be connected with described construction monitoring instrument and construction data coding in down-hole is converted into the data encoder 3 of electric wave signal string, with thesonic generator 4 that is connected and the electric wave signal string is converted into acoustic vibration signal with encoder;

2) be arranged at ground and be used to gather the sonic sensor 6 of described acoustic vibration signal, be connected and the acoustic vibration signal decoding is reduced to thesonic data decoder 7 and the monitoring computer 8 of down-hole construction data with described sonic sensor 6;

Signal transmission passage between down-holesonic generator 4 and the ground sonic sensor 6 is a coiled tubing body 5.Between described sonic sensor 6 andsonic data decoder 7, also be connected with the signal amplifier that acoustic vibration signal is carried out filter amplifying processing.Connect promising its on theconstruction detector 1 the high-temperature battery group 2 of power supply is provided.

Embodiment 3

Referring to accompanying drawing, present embodiment is made up ofconstruction detector 1, high-temperature battery group 2, data encoder 3,sonic generator 4, acoustic transmission channel (coiled tubing body 5), sonic sensor 6,sonic data decoder 7 and ground construction monitoring computer 8 systems.

Down-hole construction detector 1 is responsible for collection, processing and the storage of construction datas such as bottom pressure, temperature, tool location.Realize shaft bottom construction monitoring on the spot.Down-hole high-temperature battery group 2 provides electric power for whole down-hole construction monitoring instrument.Downhole data encoder 7 is responsible for the down-hole construction data is converted to by coding techniques the electric wave signal string of different frequency, out of phase, data encoder is the common equipment in market, and coding techniques also is a general coding techniques well known to those of ordinary skill in the art.The electric wave signal string is sent into down-holesonic generator 4 and is converted to acoustic vibration signal and sends in coiledtubing body 5 steel.Utilize the excellent transmission characteristic of sound wave in steel acoustic vibration signal to be sent to the above ground portion of coiled tubing by coiledtubing body 5 steel.Utilize 6 monitorings of ground sonic sensor and extract acoustic signals, after amplifying, signal amplifier filtering sends intosonic data decoder 7, the sonic data decoder also is the common equipment in market, decoding technique also is a general decoding technique well known to those of ordinary skill in the art, utilizessonic data decoder 7 that acoustic signals is reduced to the shaft bottom construction data.Reach the purpose of wireless data transmission by the shaft bottom construction data of ground construction monitoring computer 8 extract real-timesonic data decoders 7 outputs.

Claims (7)

1. continuous oil pipe operation pit bottom wireless data transmission method is characterized in that:

1), utilizes construction data under down-hole construction detector (1) production wells in the down-hole; The construction data coding of gathering is converted into the electric wave signal string, utilizes sonic generator (4) that the electric wave signal string is converted into acoustic vibration signal;

2) on ground, adopt sonic sensor (6) to gather described acoustic vibration signal, acoustic vibration signal transfers to monitoring computer (8) after decoding is reduced to the down-hole construction data;

The acoustic vibration signal of down-hole is the sonic sensor (6) that is sent to ground by coiled tubing body (5) for transmission channel.

2. continuous oil pipe operation pit bottom wireless data transmission method according to claim 1, it is characterized in that: also have the signal amplification procedure in sonic sensor (6) collection acoustic vibration signal step and acoustic vibration signal between decoding step, the acoustic vibration signal that is about to sonic sensor (6) collection carries out filter amplifying processing through signal amplifier.

3. continuous oil pipe operation pit bottom wireless data transmission method according to claim 1 and 2 is characterized in that: it is the data encoder (3) that adopts that the construction data coding is converted into the electric wave signal string.

4. continuous oil pipe operation pit bottom wireless data transmission method according to claim 1 and 2 is characterized in that: acoustic vibration signal be decoded as sonic data decoder (7).

5. realize the device of continuous oil pipe operation pit bottom wireless data transmission method according to claim 1, it is characterized in that comprising:

1) is arranged at down-hole and be used for the construction detector (1) of construction data under the production wells, be connected with described construction monitoring instrument and construction data coding in down-hole is converted into the data encoder (3) of electric wave signal string, with the sonic generator (4) that is connected and the electric wave signal string is converted into acoustic vibration signal with encoder;

2) be arranged at ground and be used to gather the sonic sensor (6) of described acoustic vibration signal, be connected with described sonic sensor (6) and the acoustic vibration signal decoding is reduced to the sonic data decoder (7) of down-hole construction data and monitoring computer (8);

Signal transmission passage between down-hole sonic generator (4) and the ground sonic sensor (6) is coiled tubing body (5).

6. device according to claim 5 is characterized in that: also be connected with the signal amplifier that acoustic vibration signal is carried out filter amplifying processing between described sonic sensor (6) and sonic data decoder (7).

7. according to claim 5 or 6 described devices, it is characterized in that: construction detector (1) is gone up promising its of connection the high-temperature battery group (2) of power supply is provided.

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