CN102562042A - Signal transmission method for downhole measurement and control system - Google Patents
Signal transmission method for downhole measurement and control system Download PDFInfo
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- CN102562042A CN102562042A CN2012100167354A CN201210016735A CN102562042A CN 102562042 A CN102562042 A CN 102562042A CN 2012100167354 A CN2012100167354 A CN 2012100167354A CN 201210016735 A CN201210016735 A CN 201210016735A CN 102562042 A CN102562042 A CN 102562042A
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Abstract
The invention relates to the work of oil recovery operations of oilfields, in particular to a signal transmission method for a downhole measurement and control system. The signal transmission is achieved through carrying out close connection and sealing on cable cores, a pressing cap, a wire pipe, a spacing ring, a sealing ring, a cable, an oil tube, a guard plate, a rubber protection block, screws, a coupling, an oil tube short joint, a connecting plate, a pressure plate, a sensor, a guard pipe and a steel belt throat hoop; and according to the signal transmission method, the cable or an outer armor of a capillary tube is adopted to be closely connected with the oil tube and serve as a ground wire for signal transmission, and the single-core signal transmission is achieved; the cable is fixed with the sensor by adopting the connecting plate and the back plate which are provided with unique designs, and the cable is fixed with the oil tube by adopting a guard plate assembly and a steel belt, so that the fixation of the cable is achieved; and the sealing of a wellhead is achieved by adopting a wire pipe sealing method with a unique design.
Description
Technical field
The present invention relates in the oil field operation work, the transmission method of down-hole TT&C system signal, especially: the transmission method of down-hole TT&C system signal.
Background technology
At present; In the work of oil field operation, for working condition under screw pump, the rod-pumped well, mainly adopt four kinds of methods: 1, the loopback of directional explosion sound wave shows liquid level; But receive factor affecting such as mine gas cover change; Can not accurately reflect the down-hole liquid level, have potential safety hazard, can not show downhole temperature; 2, the loopback of filling nitrogen sound wave shows the down-hole liquid level, shows that with the loopback of directional explosion sound wave the liquid level method is the same, can not accurately reflect the well liquid level, can not show the temperature of down-hole; 3, instrument is put into the down-hole, read data and storage, in 2-3 month time, again instrument is taken out, read the storage information in the instrument, understanding the working condition of oil well, but the situation under the monitor well in real time; 4, adopt the optical fiber measurement technology, and the accuracy of optical fiber measurement technology differs greatly, and can not truly reflect the underground work state.
Summary of the invention
Goal of the invention of the present invention is: provide a kind of: the transmission method of down-hole TT&C system signal; This method adopts single core high-temperature cable or capillary threading in pipe to carry out transfer of data; Signal is transmitted in the thermometric pressure gauge of down-hole; Solve the problem of underground signal, realize accurately reading in real time and record of downhole conditions to aboveground transmission; In order to adopt this easy method, must solve several difficult points: single core transmission signal problem, cable fixation problem, well head sealing problem; To achieve these goals; Can overcome above-mentioned three difficult points again; The present invention is achieved in that the transmission method of down-hole TT&C system signal; Be to utilize: cable core, pressure cap, spool, spacer ring, sealing ring, cable, oil pipe, backplate, rubber are protected piece, screw, box cupling, oil pipe short circuit, connection and pressing plate, sensor, pillar and steel band larynx hoop to be connected closely and are sealed the completion signal and transmits; Its method is: adopt cable or extracapillary armour closely to link to each other with oil pipe, as the ground wire of signal transmission, accomplish single core transmission signal problem; Adopt the connection and the pressing plate of unique design, cable and sensor are fixed, adopt backplate assembly and steel band that cable and oil pipe are fixed, accomplish the cable fixation problem; The spool encapsulating method of independent design solves the well head sealing problem; Wherein: the method for single-core cable transmission signal is: the shell of sensor, the outer armor and the oil pipe of cable are carried out the signal transmission as ground wire; Sensor passes through 4 screw on pillar; Pillar links to each other with the oil pipe short circuit through box cupling; The oil pipe short circuit links to each other with oil pipe through box cupling, until aboveground; The cable fixed method is: sensor be connected and pressing plate links to each other, connect and pressing plate closely kills cable, not influenced by external force to guarantee that sensor is connected with cable core, to such an extent as to break; Cable is connected to the outside of oil pipe short circuit through the oil pipe short circuit, by backplate and rubber protection block assembly, is killed on the box cupling between oil pipe short circuit and the oil pipe by steel band larynx hoop, and backplate be semicircle, is stuck in simultaneously on the box cupling, can slippage with assurance pillar and cable; Between per two Oil-saving pipes, all cable is fixed on the oil-pipe external wall with backplate and rubber protection block assembly; Rubber protection piece is installed on the backplate by 2 screws; The method of well head sealing is: pass in by the well head sleeve valve at well head place cable, and reach well head Based Intelligent Control cabinet through the secondary seal body, well head is not done any change, do not influence well head original structure performance; Concrete steps are: at spool of well head design, cable core adopts several spacer rings and sealing ring alternately folded mutually by passing in the spool; Compress by pressure cap; Make the sealing ring distortion, realize the sealing of well head spool, underground signal can obtain the signal transmission by cable core and spool.Through adopting the transmission method of down-hole of the present invention TT&C system signal; Can in time monitor the duty of down-hole; The oil pump capacity of adjustment oil well is raised the efficiency, and the protection pump does not occur that sky is taken out, holddown; The method that does not need to adopt again manual work to blow out is measured the liquid level of oil well, has avoided stopping well and has produced the life casualty accident.
Description of drawings
Accompanying drawing is the work sketch map of the transmission method of down-hole TT&C system signal.
Cable core 1, pressure cap 2, spool 3, spacer ring 4, sealing ring 5, cable 6, oil pipe 7, backplate 8, rubber protection piece 9, screw 10, box cupling 11, termination 12, connection and pressing plate 13, sensor 14, pillar 15, steel band larynx hoop 16.
The specific embodiment
According to accompanying drawing (as shown in the figure) the present invention is done further explanation below: the transmission method of down-hole TT&C system signal; Be to utilize: cable core 1, pressure cap 2, spool 3, spacer ring 4, sealing ring 5, cable 6, oil pipe 7, backplate 8, rubber are protected piece 9, screw 10, box cupling 11, oil pipe short circuit 12, connection and pressing plate 13, sensor 14, pillar 15 and steel band larynx hoop 16 to be connected closely and are sealed the completion signal and transmits; Its method is: adopt cable or extracapillary armour closely to link to each other with oil pipe; As the ground wire of signal transmission, accomplish single core transmission signal problem; Adopt the connection and the pressing plate of unique design, cable and sensor are fixed, adopt backplate assembly and steel band that cable and oil pipe are fixed, accomplish the cable fixation problem; The spool encapsulating method of independent design solves the well head sealing problem; Wherein: the method for single-core cable transmission signal is: the shell of sensor 14, the outer armor and the oil pipe 7 of cable 6 are carried out the signal transmission as ground wire; Sensor 14 is fixed on the pillar 8 through 4 screws 10; Pillar 8 links to each other with oil pipe short circuit 12 through box cupling 11; Oil pipe short circuit 12 links to each other with oil pipe 7 through box cupling 11, until aboveground; The cable fixed method is: sensor 14 be connected and pressing plate 13 links to each other, connect and pressing plate 13 closely kills cable 6, not influenced by external force to guarantee that sensor 14 is connected with cable core 1, be unlikely to be broken; Cable 6 is connected to the outside of oil pipe short circuit 12 through oil pipe short circuit 12; By backplate 8 and rubber protection piece 9 assemblies, kill on the box cupling 11 between oil pipe short circuit 12 and the oil pipe 7 by steel band larynx hoop 16, backplate 8 is semicircle; Be stuck in simultaneously on the box cupling 11, can slippage to guarantee pillar 15 and cable 6; Between per two Oil-saving pipes 7, all cable 6 is fixed on oil pipe 7 outer walls with backplate 8 and rubber protection piece 9 assemblies; Rubber protection piece 9 is installed on the backplate 8 by 2 screws 10; The method of well head sealing is: pass in by the well head sleeve valve at well head place cable 6, and reach well head Based Intelligent Control cabinet through the secondary seal body, well head is not done any change, do not influence well head original structure performance; Concrete steps are: at spool 3 of well head design, cable core 1 adopts several spacer rings 4 and sealing ring 5 alternately folded mutually by passing in the spool 3; Compress by pressure cap 2; Make sealing ring 5 distortion, realize the sealing of well head spool, underground signal can obtain the signal transmission by cable core 1 and spool 3.
Claims (4)
1. the transmission method of a down-hole TT&C system signal; Be to utilize: cable core, pressure cap, spool, spacer ring, sealing ring, cable, oil pipe, backplate, rubber are protected piece, screw, box cupling, oil pipe short circuit, connection and pressing plate, sensor, pillar and steel band larynx hoop to be connected closely and are sealed the completion signal and transmits; Its method is: adopt cable or extracapillary armour closely to link to each other with oil pipe; As the ground wire of signal transmission, accomplish single core transmission signal problem; Adopt to connect and pressing plate, cable and sensor are fixed, adopt backplate assembly and steel band that cable and oil pipe are fixed, accomplish the cable fixation problem; Adopt the spool encapsulating method, solve the well head sealing problem.
2. the transmission method of down-hole according to claim 1 TT&C system signal; It is characterized in that: the method for single-core cable transmission signal is: the shell of sensor, the outer armor and the oil pipe of cable are carried out the signal transmission as ground wire; Sensor passes through 4 screw on pillar; Pillar links to each other with the oil pipe short circuit through box cupling, and the oil pipe short circuit links to each other with oil pipe through box cupling, until aboveground.
3. the transmission method of down-hole according to claim 1 TT&C system signal; It is characterized in that: the cable fixed method is: sensor be connected and pressing plate links to each other; Connection and pressing plate closely kill cable, not influenced by external force to guarantee that sensor is connected with cable core, to such an extent as to break; Cable is connected to the outside of oil pipe short circuit through the oil pipe short circuit, by backplate and rubber protection block assembly, is killed on the box cupling between oil pipe short circuit and the oil pipe by steel band larynx hoop, and backplate be semicircle, is stuck in simultaneously on the box cupling, can slippage with assurance pillar and cable; Between per two Oil-saving pipes, all cable is fixed on the oil-pipe external wall with backplate and rubber protection block assembly; Rubber protection piece is installed on the backplate by 2 screws.
4. the transmission method of down-hole according to claim 1 TT&C system signal; It is characterized in that: the method for well head sealing is: pass in by the well head sleeve valve at well head place cable; And process secondary seal body reaches well head Based Intelligent Control cabinet; Well head is not done any change, do not influence well head original structure performance; Concrete steps are: at spool of well head design, cable core adopts several spacer rings and sealing ring alternately folded mutually by passing in the spool; Compress by pressure cap; Make the sealing ring distortion, realize the sealing of well head spool, underground signal can obtain the signal transmission by cable core and spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100167354A CN102562042A (en) | 2012-01-19 | 2012-01-19 | Signal transmission method for downhole measurement and control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100167354A CN102562042A (en) | 2012-01-19 | 2012-01-19 | Signal transmission method for downhole measurement and control system |
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| CN102562042A true CN102562042A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100167354A Pending CN102562042A (en) | 2012-01-19 | 2012-01-19 | Signal transmission method for downhole measurement and control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104618086A (en) * | 2015-02-15 | 2015-05-13 | 中国海洋石油总公司 | Single-core cable data transmission system and method |
| CN113047782A (en) * | 2021-04-01 | 2021-06-29 | 中油奥博(成都)科技有限公司 | Protection method for optical fiber cable at external hoop position of horizontal well oil pipe |
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| US4367797A (en) * | 1980-08-25 | 1983-01-11 | Amf Incorporated | Cable transfer sub for drill pipe and method |
| CN2530024Y (en) * | 2002-04-05 | 2003-01-08 | 丁思明 | Oil well internal cable fixing protector |
| CN2561148Y (en) * | 2002-03-19 | 2003-07-16 | 徐凌堂 | Weather-resist, withstand-voltage optical fiber cable integrated underground instrument connecting joint |
| CN1555114A (en) * | 2003-12-26 | 2004-12-15 | 哈尔滨工业大学 | Cable protector for under well oil pump |
| CN2783590Y (en) * | 2005-03-31 | 2006-05-24 | 大庆油田有限责任公司 | Cable device in paraffin high pressure cementing hole top |
| CN2911361Y (en) * | 2006-06-28 | 2007-06-13 | 大庆油田有限责任公司 | Well subermersible oil cable fixer with shield cap |
| CN101651320A (en) * | 2009-08-05 | 2010-02-17 | 黄河勘测规划设计有限公司 | Method for connecting and sealing detachable underwater cable and sensor |
-
2012
- 2012-01-19 CN CN2012100167354A patent/CN102562042A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4367797A (en) * | 1980-08-25 | 1983-01-11 | Amf Incorporated | Cable transfer sub for drill pipe and method |
| CN2561148Y (en) * | 2002-03-19 | 2003-07-16 | 徐凌堂 | Weather-resist, withstand-voltage optical fiber cable integrated underground instrument connecting joint |
| CN2530024Y (en) * | 2002-04-05 | 2003-01-08 | 丁思明 | Oil well internal cable fixing protector |
| CN1555114A (en) * | 2003-12-26 | 2004-12-15 | 哈尔滨工业大学 | Cable protector for under well oil pump |
| CN2783590Y (en) * | 2005-03-31 | 2006-05-24 | 大庆油田有限责任公司 | Cable device in paraffin high pressure cementing hole top |
| CN2911361Y (en) * | 2006-06-28 | 2007-06-13 | 大庆油田有限责任公司 | Well subermersible oil cable fixer with shield cap |
| CN101651320A (en) * | 2009-08-05 | 2010-02-17 | 黄河勘测规划设计有限公司 | Method for connecting and sealing detachable underwater cable and sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104618086A (en) * | 2015-02-15 | 2015-05-13 | 中国海洋石油总公司 | Single-core cable data transmission system and method |
| CN104618086B (en) * | 2015-02-15 | 2019-03-12 | 中国海洋石油集团有限公司 | A kind of single conductor cable data transmission system and method |
| CN113047782A (en) * | 2021-04-01 | 2021-06-29 | 中油奥博(成都)科技有限公司 | Protection method for optical fiber cable at external hoop position of horizontal well oil pipe |
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Application publication date: 20120711 |