CN102691496A - Safety control method for well logging system - Google Patents
Safety control method for well logging system Download PDFInfo
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- CN102691496A CN102691496A CN 201110073588 CN201110073588A CN102691496A CN 102691496 A CN102691496 A CN 102691496A CN 201110073588 CN201110073588 CN 201110073588 CN 201110073588 A CN201110073588 A CN 201110073588A CN 102691496 A CN102691496 A CN 102691496A
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- logging
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- safety switch
- power supply
- well logging
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Abstract
The invention relates to a safety control method for a well logging system, which is available for controlling power supply of a well logging ground system through a safety switch SW1 and comprises the following steps: (a) supplying well-logging alternating currents to a UPS (uninterruptible power supply) from a well logging generator; (b) shifting the safety switch SW1 to a work gear and transmitting the well-logging alternating currents output by the UPS to the well logging system through the safety switch SW1; (c) before installation of a perforating gun and a coring gun, shifting the safety switch SW1 to a safety gear, cutting off the power supply to the well logging system from the UPS so as to stop the work of the well logging system, and enabling a 7-core cable to ground for discharging through a grounded resistor; and (d) after finishing the installation of the perforating gun and the coring gun, shifting the safety switch SW1 to a work gear to restore normal power supply. By adoption of the safety control method, the risks which are caused when the system still works with power after the well logging ground system is shut down are effectively avoided.
Description
Technical field
The present invention relates to a kind of method that is used for the well logging ground-based system security control.
Background technology
Geophysical log or oil well logging also are in well logging, are called for short well logging, are geophysics characteristics such as the electrochemical properties that utilizes the rock stratum, conductive characteristic, acoustic characteristic, radioactivity, and the method for measurement geophysical parameters belongs to one of applied geophysics method.During oil drilling, after getting into the deep degree of planned well, all must log well, claim completion logging again, to obtain various petroleum geologies and engineering data, i.e. information such as reservoir depth, thickness is as completion and the firsthand information that develops oil fields.This well logging is called the bore hole well logging traditionally.And the well logging second time of under oil well, being carried out behind the intact sleeve pipe; Being called production logging or development logging traditionally, is to measure the sleeve pipe cementing quality in order to judge, need carry out perforation subsequently; Promptly sleeve pipe and cement sheath and part are penetrated out with special perforating gun; Make pit shaft and stratum UNICOM, reach the purpose that oil gas flows into pit shaft, then oil gas is delivered to ground through pit shaft.
Shown in accompanying drawing 4; Logging system mainly is divided into ground system and downhole instrument 2 parts, is connected with 7 core armored cables through single-core cable between 2, and ground system and cable all are installed on the logging truck; During well logging; Downhole instrument transferred or lifts by the ground winch through cable, and supplies power to downhole instrument through cable, realizes the data communication of ground and down-hole simultaneously.
At present our logging system bore hole well logging, production logging, perforation can be provided, the multiple services such as (the explosion side-wall coring are hereinafter to be referred as getting core) of getting core, be the platform of the multiple well logging service of collection.Owing to the integrated perforation that relates to priming system, get the core service, and perforating gun, what get that the core rifle uses all is the electric cap igniter, so require strict more to the circuit safety control of logging system.
For perforation, get the core service; Present logging system generally is placed with 1 key safety switch in the interface section of 7 core cables and ground system, controls 7 core cables and inserts ground systems (switch places the work gear) or receive ground resistance discharge (switch places safe gear); Before perforating gun be installed, get the core rifle, need place safe gear to this switch, promptly cable makes the cable discharge through 5.1K/5W power resistor ground connection, and the still charged work of ground system equipment.
Because 7 core cables are kept away other holding wires of unavoidable meeting and ground system when wiring, power line is range upon range of; And if the still charged work of ground system; Then will sense the signal of telecommunication of other cables on the 7 core cables, thereby might ignite electric cap, bring danger.
Even manually with the ground system power-off, because the existence of ground system UPS makes power process need for 2 steps at least; The 1st step logging truck generator is flame-out; Logging truck, ground system all cut off the power supply, and second step also need be closed ups power output, made troubles to operating personnel.Also cause easily and forget that closing ups power exports, and bring danger.
In addition; A kind of novel using electricity system alarm for power-off method is disclosed among the one Chinese patent application CN201010022477.1 (publication number CN101719654A); Utilize UPS uninterrupted power source and civilian electricity to supply power to system jointly; When civilian electric normal power supply, the supply access of UPS uninterrupted power source breaks off; In case civilian electricity outage, the UPS uninterrupted power source is to the automatic conducting of supply access meeting of system; System judges through detecting UPS to the whether conducting of the supply access of system whether civilian electricity is in off-position; If system detects the supply access conducting of UPS to system, will send civilian electric power cut-off information immediately, through the internet, mobile phone terminal or landline telephone are notified the user civilian electricity outage, or trigger relevant device and make alarm operation, indicate civilian electricity outage.In this patent application; There are two or more power interfaces in system, relates to utilizing UPS uninterrupted power source and civilian electricity jointly to system's power supply, and what this patent application solved is when folk power supply cuts off; Because UPS comes stand-by power supply; Thereby keep the stable power demands that continues, do not need the full-time staff to guard using electricity system, do not worry that safety-protection system is destroyed.
Summary of the invention
To the problem points that exists in the above-mentioned prior art; The objective of the invention is to, a kind of logging system method of controlling security is provided, 7 core cables and ground system are broken off and through in the 5.1K/5W power resistor ground connection; Above-mentioned potential safety hazard is eliminated in the output of shutoff ups power.
According to an aspect of the present invention; A kind of logging system method of controlling security is provided; Said system comprises: uninterrupted power source UPS, single-core cable and 7 core cables, safety switch SW1 and system power supply allocation units PDU; The output of said uninterrupted power source UPS and single-core cable and the equal access security switch of 7 core cables; Said safety switch SW1 is arranged on the interface of single-core cable and 7 core cables and ground system, through said safety switch SW1 the power supply of well logging ground-based system is controlled, and it comprises the steps:
(a) to said uninterrupted power source UPS the well logging alternating current is provided from the well logging generator;
(b) said safety switch SW1 is placed the work gear, the well logging alternating current of said uninterrupted power source UPS output flows to logging system through said safety switch SW1;
(c) before perforating gun be installed, get the core rifle; Said safety switch SW1 is switched to safe gear; Break off the power supply of uninterrupted power source UPS to logging system, said logging system quits work, and said single-core cable and 7 core cables are through the ground resistance earth discharge;
(d) perforating gun, get the installation of core rifle after, said safety switch SW1 is switched to work gear gear, recover power supply normally.
Through adopting above-mentioned method of controlling security, when safety switch pushed safe gear, UPS output was broken off, the outage of ground system all devices, and 7 core cables are through 5.1K/5W power resistor ground connection, accomplished perforation, the security control of ground system when getting the core service.
In above-mentioned logging system method of controlling security, it is characterized in that, between said uninterrupted power source UPS and said safety switch, be provided with UPS online/Bypass Control switch SW 4; When said uninterrupted power source UPS operate as normal; Said UPS is online/and Bypass Control switch SW 4 breaks off, and when breaking down, said UPS is online/Bypass Control switch SW 4 closures; Make the alternating current of well logging generator output directly not get into system, keep the normal power supply of system through UPS.
In above-mentioned logging system method of controlling security; It is characterized in that; In said step (b), be delivered to said system power supply allocation units PDU from the well logging alternating current of said uninterrupted power source UPS output, by said system power supply allocation units PDU to the said alternating current of logging system devices allocation.
In above-mentioned logging system method of controlling security, it is characterized in that in said step (c), be cut off from said uninterrupted power source UPS output, said system power supply allocation units PDU stops to the said alternating current of logging system devices allocation.
In above-mentioned logging system method of controlling security, it is characterized in that said ground resistance is the 5.1K/5W power resistor.
In above-mentioned logging system method of controlling security, it is characterized in that said safety switch is that SW1 is 10 layers of multiconductor changeover switch, when handle position is in 0 degree position, single-core cable
With7 core cables insert logging system, and the well logging AC power inserts said system power supply allocation units PDU; When handle position is in 90 degree positions, with single-core cable and 7 core cable groundings.
Wherein, Said safety switch is that the handle position of SW1 is when being in 0 degree position; With contact 1-2,5-6,9-10,13-14,17-18,21-22,25-26,29-30,33-34,37-38 closure, contact 3-4,7-8,11-12,15-16,19-20,23-24,27-28,31-32,35-36,39-40 break off.
In addition; Said safety switch is that the handle position of SW1 is when being in 90 degree positions; Contact 1-2,5-6,9-10,13-14,17-18,21-22,25-26,29-30,33-34,37-38 break off, contact 3-4,7-8,11-12,15-16,19-20,23-24,27-28,31-32,35-36,39-40 closure.
Description of drawings
Accompanying drawing 1 is the block diagram of well logging ground-based system method of controlling security of the present invention.
Accompanying drawing 2 is logging system safety ground control principle figure of the present invention.
Accompanying drawing 3 is safety switch of the present invention contact graphs of a relation.
Accompanying drawing 4 is logging operation sketch mapes.
The specific embodiment
Accompanying drawing 1 is the block diagram of well logging ground-based system method of controlling security of the present invention.In this method of controlling security; With 7 core cables and single-core cable (the mark 7C&1C in the way), the whole access security switches of UPS; Realize the power supply control of ground system through the gear switch of this safety switch; Cable makes the cable discharge through 5.1K/5W power resistor ground connection during outage, realizes security control.Particularly,
Accompanying drawing 2 is logging system safety ground control principle figure of the present invention.In accompanying drawing 2,
7C&1C representative well logging is with 7 core cable and single-core cables, and logging cable commonly used has seven core cable and single-core cable, and logging cable not only can transmit signal and electric energy; And because its mechanical performance is very good; So can also bear the huge tension force that produces in the well logging process, in the structure cross section of seven core cable commonly used, the resistance value of cable core is relevant with cable core material therefor and length; 7 cable cores insulate each other, are in order to increase the mechanical strength of cable and design two-layer outer armor purpose.
UPS representes the logging system uninterrupted power source, has functions such as automatic voltage regulation, power-off protection, and in the well logging electric power system, the output of generator is linked into the input of UPS, and generally speaking, all ground, the downhole instrument power supplies of logging system are exported by UPS.
SW4 represent UPS online/the Bypass Control switch, when UPS broke down, the logging system power supply can directly not get into system through UPS, kept the normal power supply of system.
PDU representes the system power supply allocation units, and the AC power of all logging system equipment is all distributed access through it;
ARMOR representes cable sheath, promptly big ground.
SW1 representes the logging system Safe control switch, is 10 layers of multiconductor changeover switch, and 2 gears are arranged; Wherein 0 degree position is the work gear, and the expression system is in normal operating conditions, 7 core cables and single-core cable connecting system; AC power inserts PDU; 90 degree positions are safe gear, represent 7 core cables and single-core cable ground connection, and system power supply is unsettled; SW1 is equivalent to the single-pole double-throw switch (SPDT) of 10 interlocks; This switch SW 1 is made up of the SW1-A shown in the accompanying drawing 2, SW1-B, SW1-C three parts, and its contact relation principle figure is shown in accompanying drawing 3, when handle position is in 0 degree position; The contact 1-2 of this switch, 5-6,9-10,13-14,17-18,21-22,25-26,29-30,33-34,37-38 are closed, and contact 3-4,7-8,11-12,15-16,19-20,23-24,27-28,31-32,35-36,39-40 break off; When handle position is in 90 degree positions, just with above-mentioned opposite.
In well logging ground-based system of the present invention, shown in accompanying drawing 2, be provided with safety switch SW1 in the interface section of single-core cable and 7 core cables and ground system; Logging system uninterrupted power source UPS via UPS online/Bypass Control switch SW 4 accesses to safety switch SW1, during operate as normal, the alternating current of well logging generator output is supplied power to system via logging system uninterrupted power source UPS; UPS is online/and Bypass Control switch SW 4 breaks off; As previously mentioned, when UPS breaks down, UPS is online/Bypass Control switch SW 4 closures; The alternating current of well logging generator output still can directly not get into system through UPS, keeps the normal power supply of system.The handle position of this safety switch SW1 is placed in 0 degree position; The position that promptly places figure B to order; At this moment; As narrating in the preceding text; The contact 1-2 of this switch SW 1,5-6,9-10,13-14,17-18,21-22,25-26,29-30,33-34,37-38 closure; And contact 3-4,7-8,11-12,15-16,19-20,23-24,27-28,31-32,35-36,39-40 break off, and the output AC electricity of generator is delivered to system power supply allocation units PDU via logging system uninterrupted power source UPS and safety switch SW1, and to pass through these system power supply allocation units PDU be all logging system devices allocation incoming transport power supplys; Through the normal data transfer that single-core cable and 7 core cables are supplied power and carried out ground system and downhole instrument downhole instrument, accomplish normal well logging work.
But, for perforation, get the core service, before perforating gun is installed, gets the core rifle; Need this switch SW 1 be pushed safe gear; That is, switch to the position that C is ordered among the figure, the handle position of this safety switch SW1 is placed in 90 degree positions; At this moment; In preceding text, being narrated, the contact 1-2 of this switch SW 1,5-6,9-10,13-14,17-18,21-22,25-26,29-30,33-34,37-38 break off connection, and contact 3-4,7-8,11-12,15-16,19-20,23-24,27-28,31-32,35-36,39-40 are closed.In this case; Logging system uninterrupted power source UPS was cut off with being connected of system power supply allocation units PDU; Stop the power supply for all logging system equipment, well logging ground-based system quits work, and this moment; Single-core cable links to each other with the 5.1K/5W power resistor and ground connection through switch SW 1 (the A point is connected with the C point among the figure) with 7 core cables, thereby accomplishes the cable discharge.
Thus; When safety switch places the C point to be in safe gear; Not only ground system all devices outage quits work, and charged in single-core cable and the 7 core cables released through 5.1K/5W power resistor ground connection; The probability that possibly respond to the signal of telecommunication of other cables on single-core cable that then causes owing to the still charged work of ground system and the 7 core cables reduces significantly, thereby has avoided the ignition electric cap effectively and brought danger.
Perforating gun, get the installation of core rifle after, more said safety switch SW1 is switched to the B point from the C point, recover the power supply of normal system.
Description through the foregoing description; Can know; Method of controlling security of the present invention is placed with 1 key safety switch than the interface section at 7 core cables and ground system; Control 7 core cables and insert ground systems (work gear) or receive the discharge prior art of (safe gear) of ground resistance, its advantage is conspicuous.
It should be understood that only unrestricted technical scheme of the present invention of above embodiment in order to explanation.Although the present invention is specified with reference to the foregoing description; But those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention; And do not break away from the spirit and scope of the present invention, and accompanying claims is intended to contain these modifications that fall into spirit and scope of the invention or is equal to replacement.
Claims (8)
1. logging system method of controlling security; Said system comprises: uninterrupted power source UPS, single-core cable and 7 core cables, safety switch SW1 and system power supply allocation units PDU; The output of said uninterrupted power source UPS and single-core cable and the equal access security switch of 7 core cables, said safety switch SW1 is arranged on the interface of single-core cable and 7 core cables and ground system, through said safety switch SW1 the power supply of well logging ground-based system is controlled; It is characterized in that, comprise the steps:
(a) to said uninterrupted power source UPS the well logging alternating current is provided from the well logging generator;
(b) said safety switch SW1 is placed the work gear, the well logging alternating current of said uninterrupted power source UPS output flows to logging system through said safety switch SW1;
(c) before perforating gun be installed, get the core rifle; Said safety switch SW1 is switched to safe gear; Break off the power supply of uninterrupted power source UPS to logging system, said logging system quits work, and said single-core cable and 7 core cables are through the ground resistance earth discharge;
(d) perforating gun, get the installation of core rifle after, said safety switch SW1 is switched to work gear gear, recover power supply normally.
2. logging system method of controlling security as claimed in claim 1 is characterized in that,
Between said uninterrupted power source UPS and said safety switch, be provided with UPS online/Bypass Control switch SW 4; When said uninterrupted power source UPS operate as normal; Said UPS is online/and Bypass Control switch SW 4 breaks off, and when breaking down, said UPS is online/Bypass Control switch SW 4 closures; Make the alternating current of well logging generator output directly not get into system, keep the normal power supply of system through UPS.
3. according to claim 1 or claim 2 logging system method of controlling security is characterized in that,
In said step (b), be delivered to said system power supply allocation units PDU from the well logging alternating current of said uninterrupted power source UPS output, by said system power supply allocation units PDU to the said well logging alternating current of logging system devices allocation.
4. according to claim 1 or claim 2 logging system method of controlling security is characterized in that,
In said step (c), be cut off from said uninterrupted power source UPS output, said system power supply allocation units PDU stops to the said well logging alternating current of logging system devices allocation.
5. according to claim 1 or claim 2 logging system method of controlling security is characterized in that,
Said ground resistance is the 5.1K/5W power resistor.
6. according to claim 1 or claim 2 logging system method of controlling security is characterized in that,
Said safety switch is that SW1 is 10 layers of multiconductor changeover switch, and when handle position was in 0 degree position, single-core cable and 7 core cables inserted logging system, and the well logging AC power inserts said system power supply allocation units PDU; When handle position is in 90 degree positions, with single-core cable and 7 core cable groundings.
7. logging system method of controlling security as claimed in claim 6 is characterized in that,
Said safety switch is that the handle position of SW1 is when being in 0 degree position; Contact 1-2,5-6,9-10,13-14,17-18,21-22,25-26,29-30,33-34,37-38 closure, contact 3-4,7-8,11-12,15-16,19-20,23-24,27-28,31-32,35-36,39-40 break off.
8. logging system method of controlling security as claimed in claim 6 is characterized in that,
Said safety switch is that the handle position of SW1 is when being in 90 degree positions; Contact 1-2,5-6,9-10,13-14,17-18,21-22,25-26,29-30,33-34,37-38 break off, contact 3-4,7-8,11-12,15-16,19-20,23-24,27-28,31-32,35-36,39-40 closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110073588.XA CN102691496B (en) | 2011-03-25 | 2011-03-25 | Logging system method of controlling security |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110073588.XA CN102691496B (en) | 2011-03-25 | 2011-03-25 | Logging system method of controlling security |
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| CN102691496A true CN102691496A (en) | 2012-09-26 |
| CN102691496B CN102691496B (en) | 2016-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220026392A1 (en) * | 2018-11-28 | 2022-01-27 | Limited Liability Company "Miks" | An apparatus for multisensor electromagnetic defectoscopy and integrity monitoring of well casings |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6201371B1 (en) * | 1998-08-07 | 2001-03-13 | Matsushita Electric Industrial Co., Ltd. | Uninterruptible power system |
| CN2694588Y (en) * | 2004-03-26 | 2005-04-20 | 佛山市创电电源设备有限公司 | Uninterruption power source two-way input automatic switching equipment |
| JP2008154392A (en) * | 2006-12-19 | 2008-07-03 | Matsushita Electric Ind Co Ltd | Power system, power supply control method of power system, and power supply control program of power system |
| CN101470507B (en) * | 2007-12-28 | 2011-07-27 | 鸿富锦精密工业（深圳）有限公司 | Power supply control circuit |
| CN101741112A (en) * | 2008-11-24 | 2010-06-16 | 薛剑鸿 | Accumulator discharging device |
| CN201539245U (en) * | 2009-10-14 | 2010-08-04 | 西安威尔罗根能源科技有限公司 | Logging ground system power supply and data bus anti-interference circuit |
| CN101719654A (en) * | 2010-01-07 | 2010-06-02 | 佘培嘉 | Novel design of power failure warning of power system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220026392A1 (en) * | 2018-11-28 | 2022-01-27 | Limited Liability Company "Miks" | An apparatus for multisensor electromagnetic defectoscopy and integrity monitoring of well casings |
| US11867662B2 (en) * | 2018-11-28 | 2024-01-09 | Tgt Dmcc | Apparatus for multisensor electromagnetic defectoscopy and integrity monitoring of well casings |
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