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Device for sound wave transmission of while-drilling bottom pressure data and using method thereof

A pressure data and sound wave technology, applied in the field of drilling data transmission device, can solve problems such as the inability to transmit signals normally, and achieve the effect of wide application prospect, convenient use, and rapid underbalanced drilling operation.

Active Publication Date: 2016-10-12
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a device for acoustic wave transmission of bottom hole pressure data while drilling and its application method, which overcomes the shortcomings of the above-mentioned prior art. When using foam, nitrogen gas or oil-mixed micro-foam as the circulating medium in underbalanced drilling construction, It can effectively solve the problem that the signal cannot be transmitted normally in the process of transmitting downhole data such as pressure by means of mud pulse transmission

Method used

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  • Device for sound wave transmission of while-drilling bottom pressure data and using method thereof
  • Device for sound wave transmission of while-drilling bottom pressure data and using method thereof

Examples

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Effect test

Embodiment 1

[0024] Embodiment 1: as attached Figures 1 to 5 As shown, the device for acoustic wave transmission of bottomhole pressure data while drilling includes a short drill collar 1, an outer cylinder for acoustic wave transmission 2, an outer cylinder for pressure measurement while drilling 3, a battery cylinder 4, an instrument cabin cylinder 6 and a mandrel 7, and a short drill collar 1 , the sound wave transmission outer cylinder 2 and the pressure measurement while drilling outer cylinder 3 are fixedly installed together from top to bottom in sequence, and a mandrel 7 is built in the middle of the pressure measurement while drilling outer cylinder 3, and an opening is arranged on the mandrel 7 toward The blind hole 8 on the top, at least one radial through hole 9 communicating with the blind hole 8 is distributed along the circumference in the middle of the mandrel 7, and the radial through hole 9 connected with the radial through hole 9 is distributed along the circumference in...

Embodiment 2

[0032] Embodiment 2: as attached Figure 5 As shown, the using method of the device for acoustic transmission of bottomhole pressure data while drilling is carried out as follows: the device for acoustic transmission of bottomhole pressure data while drilling described in Embodiment 1 is connected to the drill string through a short drill collar 1, and By connecting the pressure measurement while drilling outer cylinder 3 with the drill bit, the device for acoustic wave transmission of bottomhole pressure data while drilling as described in Embodiment 1 is lowered into the well, and the drilling annulus and the blind hole are connected through the radial through hole 9 and the communication hole, Make the pressure and temperature integrated sensor 11 obtain the data of annular bottomhole fluid column pressure and temperature (downhole data), and the pressure and temperature integrated sensor 11 transmit the obtained annular bottomhole fluid column pressure and temperature data ...

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Abstract

The invention relates to the technical field of drilling data transmission devices and using methods thereof, in particular to a device for sound wave transmission of while-drilling bottom pressure data and a using method thereof. The device for sound wave transmission of while-drilling bottom pressure data comprises a short drill collar, a sound wave transmission outer cylinder, a while-drilling pressure measuring outer cylinder, a battery housing, an instrument bay cylinder and a central spindle. The device for sound wave transmission of while-drilling bottom pressure data is reasonable and compact in structure and convenient to use. When pressure and temperature data obtained by a pressure and temperature integrated sensor is transmitted to the ground, stress waves are generated by a piezoelectric ceramic transducer and transmission of downhole data is achieved, and the data transmission mode has the advantages that the interference resistance is strong and the transmission rate is high, so that the device for sound wave transmission of while-drilling bottom pressure data is not limited by circulation media adopted by unbalanced drilling, signals are normal and are transmitted in real time, and the device is applicable to transmission of downhole data of conventional unbalanced drilling.

Description

technical field [0001] The invention relates to the technical field of a drilling data transmission device and its use method, and relates to a device for acoustic wave transmission of bottom hole pressure data while drilling and its use method. Background technique [0002] In recent years, with the increase in the exploration and development of oil and gas reservoirs in low-pressure, low-permeability formations, deep and complex areas, the technical advantages of underbalanced drilling in reservoir protection and rapid drilling have gradually emerged, benefiting from the market environment As well as the continuous development and improvement of underbalanced drilling technology, there has been an upsurge in the application of underbalanced drilling in China. The underpressure difference value is very important in underbalanced drilling. The underpressure value refers to the difference between the bottom hole pressure and the bottom hole formation pore pressure. Sand prod...

Claims

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Application Information

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IPC IPC(8): E21B47/14E21B47/06E21B47/07
CPCE21B47/06E21B47/14E21B47/07
Inventor 孙鹏周强罗维刘琛唐亮孟现波马红滨
Owner BC P INC CHINA NAT PETROLEUM CORP
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