CN102373917A - Anti-collision system for monitoring casing pipe on wellhead - Google Patents
Anti-collision system for monitoring casing pipe on wellhead Download PDFInfo
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- CN102373917A CN102373917A CN2010102515019A CN201010251501A CN102373917A CN 102373917 A CN102373917 A CN 102373917A CN 2010102515019 A CN2010102515019 A CN 2010102515019A CN 201010251501 A CN201010251501 A CN 201010251501A CN 102373917 A CN102373917 A CN 102373917A
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Abstract
The invention aims to provide a system, which is used for avoiding collision of a drill bit and an adjacent well casing pipe through adjacent well monitoring, predicting a distance from the drill bit to an adjacent well, and taking measures in advance. When the system is used, a detector is arranged on a wellhead of the adjacent well and is used for monitoring a sound wave generated when a current well is drilled by the drill bit, and the adjacent well casing pipe is used as a channel for transmitting the sound wave from underground to a ground surface. The detector is used for transmitting a received sound wave signal to an analog to digital converter, and the analog to digital converter is used for converting an analog signal collected by the detector to a digital signal and then inputting the digital signal to a process and display terminal. The process and display terminal can be used for estimating the distance from the drill bit to the adjacent well according to the amplitude of the received sound wave. When the distance between the drill bit and the adjacent well casing pipe is smaller than a given safe distance, the process and display terminal gives an alarm to prevent the occurrence of a collision accident.
Description
[technical field]
The present invention relates to a kind of new oil cluster drilling anti-collision new method.
[background technology]
Because place restriction and cost control need, increasing land-based drilling site and ocean platform need bore cluster well.Do not wait from 1.5m to 3m from formula well well slot spacing, and each well bore track is intricate under the platform, the accident of drill bit collision offset well sleeve pipe happens occasionally during drilling well.
For preventing the generation of two well collision accidents, mainly adopt the method for detached coefficients anti-collision program of carrying out, controlled drilling rate, employing gyro to measure to eliminate the methods such as influence of magnetic disturbance in present stage.Because influences such as certainty of measurement must be reserved a bulk of safety zone to guarantee that separation is greater than 1 between Liang Jing when drilling well.That brings thus all can increase the activity duration around methods such as barrier measure and employing gyro and controlled drilling rates, increases operator's cost.Whether observing drill bit in the drilling process, whether to bore the method for meeting offset well then be to remove to observe at vibrosieve to have offset well cementing concrete and iron filings to return out.And in case the offset well sleeve pipe accident that bumps then need be carried out offset well casing salvaging and this well sidetracking.This all can roll up operating cost.
[summary of the invention]
It is a kind of through the offset well monitoring that the object of the invention is to provide, and the prediction drill bit takes measures to avoid the system of drill bit and the collision of offset well sleeve pipe in advance apart from the distance of offset well.Wave detector is placed the offset well well head, the sound wave that produces when being used to monitor current well drill bit and creeping into, offset well sleeve pipe then as this sound wave from the underground passage that reaches ground.Wave detector transfers to analog-digital converter with the acoustic signals of accepting, and input was handled and display terminal after the analog signal that analog-digital converter was collected wave detector was converted into data signal.Through software analysis and calculating, can estimate that drill bit leaves the distance of offset well according to the size of the sound wave amplitude that receives.When the distance between drill bit and the offset well sleeve pipe time less than the safe distance that sets, handle with display terminal giving the alarm, prevent the collision accident generation.
Technical scheme of the present invention is following:
Because vibrations produce sound wave 2, sound wave 2 is transmitted to offset well sleeve pipe 3 to current well drill bit 1 in the stratum when creeping into.Offset well sleeve pipe 3 transfers to well head as the sound wave carrier with this acoustic signals.The wave detector 4 that is placed on the offset well well head receives this acoustic signals, through analog-digital converter 5 this acoustic signals is transferred to and handles and display terminal 6.Processing and display terminal 6 are judged the distance between drill bit and the offset well sleeve pipe through the power of analyzing acoustic signals.When the distance between drill bit and the offset well sleeve pipe time less than the safe distance that sets, handle with display terminal 6 giving the alarm, avoid current well drill bit 1 to bore and meet offset well, prevent the accident generation.
[description of drawings]
Fig. 1 is the operating principle of embodiment of the present invention
Among the figure: 1, acoustic signals 3, the offset well sleeve pipe 4, the wave detector 5 that is placed in well head, analog-digital converter 6, processing and the display terminal that produce of current well drill bit 2, drill bit vibrations
[specific embodiment]
During use, at first input offset well well bore data, record and the present bit location data of current well in processing and display terminal 6 so that processing terminal is confirmed background noise, improve the signal processing accuracy.Current well drill bit 1 is because vibrations produce sound wave 2 when creeping into, and sound wave 2 is transmitted to offset well sleeve pipe 3 in the stratum.Offset well sleeve pipe 3 transfers to well head as the sound wave carrier with this acoustic signals.The wave detector 4 that is placed on the offset well well head receives this acoustic signals, through analog-digital converter 5 this acoustic signals is transferred to and handles and display terminal 6.Processing and display terminal 6 are judged the distance between drill bit and the offset well sleeve pipe through the power of analyzing acoustic signals.When the distance between drill bit and the offset well sleeve pipe time less than the safe distance that sets, handle with display terminal 6 giving the alarm, avoid current well drill bit 1 to bore and meet offset well, prevent the accident generation.
Claims (2)
1. a novel drilling well anticollision system is characterized in that: monitor the vibration signal that produces when drill bit creeps at the offset well well head, judge the distance of drill bit apart from offset well through the analytic signal attenuation degree.When drill bit apart from offset well distance during less than the threshold set, system gives the alarm, thereby takes measures in advance, avoids the generation of drill bit and offset well collision accident.
2. drilling well anticollision system as claimed in claim 1 is characterized in that: the wave detector that is installed in the offset well well head adopts aluminum or other can bore type material and makes, and the salvage when avoiding maloperation to fall into well improves operational security.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102515019A CN102373917A (en) | 2010-08-12 | 2010-08-12 | Anti-collision system for monitoring casing pipe on wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102515019A CN102373917A (en) | 2010-08-12 | 2010-08-12 | Anti-collision system for monitoring casing pipe on wellhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102373917A true CN102373917A (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102515019A Pending CN102373917A (en) | 2010-08-12 | 2010-08-12 | Anti-collision system for monitoring casing pipe on wellhead |
Country Status (1)
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| CN (1) | CN102373917A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644457A (en) * | 2012-04-19 | 2012-08-22 | 中国海洋石油总公司 | Method for calculating distance between adjacent wells whiling drilling |
| CN102953722A (en) * | 2012-12-07 | 2013-03-06 | 中国海洋石油总公司 | Anti-collision obstacle bypassing method and system during drilling operation |
| CN103573248A (en) * | 2012-07-25 | 2014-02-12 | 中国石油化工股份有限公司 | Magnetic interference measuring device for borehole |
| CN104963676A (en) * | 2015-06-25 | 2015-10-07 | 中国石油天然气股份有限公司 | Well drilling anti-collision early warning device and method |
| CN107300690A (en) * | 2017-08-09 | 2017-10-27 | 中国石油大学(华东) | A kind of cluster well inter-well distance measuring method |
| CN113107472A (en) * | 2021-05-11 | 2021-07-13 | 京鸿石油钻采工程技术有限公司 | Active magnetic distance measuring device and method suitable for well drilling collision prevention |
Citations (5)
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| EP0099638A2 (en) * | 1982-07-21 | 1984-02-01 | Mobil Oil Corporation | A method and system of data transmission for a borehole logging tool |
| US5131477A (en) * | 1990-05-01 | 1992-07-21 | Bp Exploration (Alaska) Inc. | Method and apparatus for preventing drilling of a new well into an existing well |
| CN101235716A (en) * | 2008-02-22 | 2008-08-06 | 中国海洋石油总公司 | Prealarming method and method for avoiding oil gas well drilling neighbouring wellbore collision |
| CN201416442Y (en) * | 2009-06-16 | 2010-03-03 | 大庆油田有限责任公司 | Collection system of down-hole vibration signals by drilling |
| CN201460860U (en) * | 2009-08-21 | 2010-05-12 | 大庆油田有限责任公司 | Drilling detection anti-collision alarm system |
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2010
- 2010-08-12 CN CN2010102515019A patent/CN102373917A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0099638A2 (en) * | 1982-07-21 | 1984-02-01 | Mobil Oil Corporation | A method and system of data transmission for a borehole logging tool |
| US5131477A (en) * | 1990-05-01 | 1992-07-21 | Bp Exploration (Alaska) Inc. | Method and apparatus for preventing drilling of a new well into an existing well |
| CN101235716A (en) * | 2008-02-22 | 2008-08-06 | 中国海洋石油总公司 | Prealarming method and method for avoiding oil gas well drilling neighbouring wellbore collision |
| CN201416442Y (en) * | 2009-06-16 | 2010-03-03 | 大庆油田有限责任公司 | Collection system of down-hole vibration signals by drilling |
| CN201460860U (en) * | 2009-08-21 | 2010-05-12 | 大庆油田有限责任公司 | Drilling detection anti-collision alarm system |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644457A (en) * | 2012-04-19 | 2012-08-22 | 中国海洋石油总公司 | Method for calculating distance between adjacent wells whiling drilling |
| CN102644457B (en) * | 2012-04-19 | 2014-12-24 | 中国海洋石油总公司 | Method for calculating distance between adjacent wells whiling drilling |
| CN103573248A (en) * | 2012-07-25 | 2014-02-12 | 中国石油化工股份有限公司 | Magnetic interference measuring device for borehole |
| CN102953722A (en) * | 2012-12-07 | 2013-03-06 | 中国海洋石油总公司 | Anti-collision obstacle bypassing method and system during drilling operation |
| CN102953722B (en) * | 2012-12-07 | 2015-07-22 | 中国海洋石油总公司 | Anti-collision obstacle bypassing method and system during drilling operation |
| CN104963676A (en) * | 2015-06-25 | 2015-10-07 | 中国石油天然气股份有限公司 | Well drilling anti-collision early warning device and method |
| CN107300690A (en) * | 2017-08-09 | 2017-10-27 | 中国石油大学(华东) | A kind of cluster well inter-well distance measuring method |
| CN107300690B (en) * | 2017-08-09 | 2019-05-17 | 中国石油大学(华东) | A kind of cluster well inter-well distance measurement method |
| CN113107472A (en) * | 2021-05-11 | 2021-07-13 | 京鸿石油钻采工程技术有限公司 | Active magnetic distance measuring device and method suitable for well drilling collision prevention |
| CN113107472B (en) * | 2021-05-11 | 2022-12-20 | 京鸿石油钻采工程技术有限公司 | Active magnetic distance measuring device and method suitable for well drilling collision prevention |
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Application publication date: 20120314 |