CN201352095Y - Inverse VSP remote explosion exciting system of deep well - Google Patents
Inverse VSP remote explosion exciting system of deep well Download PDFInfo
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- CN201352095Y CN201352095Y CNU2008200278248U CN200820027824U CN201352095Y CN 201352095 Y CN201352095 Y CN 201352095Y CN U2008200278248 U CNU2008200278248 U CN U2008200278248U CN 200820027824 U CN200820027824 U CN 200820027824U CN 201352095 Y CN201352095 Y CN 201352095Y
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Abstract
The utility model relates to an inverse VSP remote explosion exciting system of a deep well of an oil field. The technical proposal is as follows: the inverse VSP remote explosion exciting system comprises a remote explosion system, an exciting system, a simulating resistor, a detonator and a power supply. The remote explosion system mainly comprises a coder and a decoder; the coder is fixed on a main machine of a collecting instrument; the decoder is arranged at a shot point; after the exciting system and the exciting remote explosion system is charged completely, the existing remote explosion system transmits detonator signals to the exciting system, simultaneously generates signals for verifying TB to the instrument by the simulating resistor releasing self-capacitive charge; and the exciting system receives the detonator signals and detonates the detonator immediately. The inverse VSP remote explosion exciting system has the beneficial effects of improving output voltage under same exciting voltage so as to increase the transient current passing through the detonator and lead the existing remote explosion system to be capable of detonating the detonator in the deep well, and having perfect safety protection measures and no potential safety hazard.
Description
One, technical field:
The utility model relates to a kind of oil field deep well prospecting system, the contrary distant quick-fried activating system of VSP of particularly a kind of deep-well.
Two, background technology:
The VSP technology is by exciting receive mode can be divided into conventional VSP and RVSP.Conventional VSP technology is the seismic exploration technique that places well, focus to excite on ground in wave detector, with reference to accompanying drawing 1, because wave detector places well, can observe simultaneously obtaining upgoing wave and descending ripple.The RVSP technology is to place well, wave detector to be fixed on the seismic exploration technique on ground focus, with reference to accompanying drawing 2, is characterized in that surface geophone is laid easily, expense is low, gathers the timeliness height.
Conventional VSP is owing to be subjected to the restriction of well and equipment, and it is very limited that wave detector is laid quantity (domestic can only arrive 32 grades at most), and the data volume that collects is limited.RVSP can obtain to approach the data volume of surface seismic at the surface deployment wave detector, and its construction is easier with respect to conventional surface seismic.The existing difficult problem of RVSP is as follows: 1, deep-well focus problem: how to design down-hole vibration source and make it have enough big energy to pass the thick stratum of several kms and reach the face of land and do not damage well.2, the problem of data signal to noise ratio: the noise that utilizes drill bit to produce is subjected to strong noise effects, is difficult to measure the drill bit earthquake information as focus.These two difficult problems have limited the technical development of RVSP.
At present, in R-VSP (the contrary VSP of deep-well) project, the problem that excites of detonator is the primary difficult point of project success or failure.Distant quick-fried system is made up of encoder and decoder, in the physical prospecting construction, encoder is fixed on the acquisition instrument main frame, decoder is placed near the shot point, and (decoder can produce high voltage to instrument host, and this voltage is added on the detonator through the big gun line by the detonator in the encoder transmission instruction control decoder ignition well, making has instantaneous large-current by detonating in the detonator), by cap sensitive explosive, in successful detonating primer, decoder is to a checking of instrument host feedback TB signal.Generally about 9m-30m, existing decoder MACHA, SHOTPRO (triumph physical prospecting company mainly uses these two kinds distant quick-fried systems) all can reliably ignite seismic exploration detonator (the ignition electric current of seismic exploration detonator is as more than the 450mA routinely) routinely to seismic exploration construction well depth routinely.And in intending the deep-well RVSP project of implementing, about well depth 2000m.With the distant quick-fried difference that excites in the seismic exploration routinely be: (1) big gun line increases substantially.By lengthening about 70m-100m is more than the 2000m.(2) big gun line environment temperature of living in improves.Because the diversity of earth formation, with the very big discreteness of temperature existence of the degree of depth, generally speaking, 2000m left and right sides ground temperature is about 100 ℃.(3) the big gun line bears the pressure increase that stands.In the deep-well of the 2000m left and right sides, pressure is about 20MPa.
The variation that above difference directly causes is that big gun line resistance value increases, and under same excitation voltage, the electric current by detonator significantly reduces, and the detonator in the deep-well can not be ignited by existing distant quick-fried system.
Three, utility model content:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, provides a kind of deep-well the contrary distant quick-fried activating system of VSP, and the sync section that relies on existing distant quick-fried system excites synchronously guaranteeing as excitation signal, designs new high-voltage output circuit simultaneously.
Its technical scheme is: comprise distant quick-fried system, activating system, artifical resistance, detonator and power supply, described distant quick-fried system mainly is made up of encoder and decoder, and encoder is fixed on the acquisition instrument main frame, and decoder is placed on the shot point place; Described activating system mainly by high-pressure modular, organize electric capacity, controllable silicon and relay more and be electrically connected and form, described high-pressure modular powers up the back and charges for many group electric capacity, controllable silicon is electrically connected with detonator; Described high-pressure modular is connected voltmeter with organize between the electric capacity more, and charging process is monitored by voltmeter head.
Be provided with protective wire between above-mentioned controllable silicon and the detonator.
Above-mentioned high-pressure modular is connected discharge resistance with organize between the electric capacity more, by discharge resistance residual charge on the electric capacity is bled off rapidly, makes the electric capacity two ends remain zero potential constantly in non-ignition.
Be electrically connected the input diode between above-mentioned power supply and the activating system, the protection entire circuit is not worked when the power supply reversal connection, guarantees that exciter is not damaged.
The beneficial effects of the utility model are: (1) has improved output voltage under same excitation voltage, to strengthen the immediate current by detonator, makes existing distant quick-fried system can ignite detonator in the deep-well; (2) strengthened the high pressure retention time by the many groups of electric capacity that are connected in parallel, to add the action time of electric current of growing up at detonator; (3) have perfect safety precautions, do not have potential safety hazard; (4) the own stable performance of equipment, reliable; (5) can not cause any damage to the use cable.
Four, description of drawings:
Accompanying drawing 1 is the fundamental diagram of prior art VSP of the present utility model;
Accompanying drawing 2 is fundamental diagrams of RVSP of the present utility model;
Accompanying drawing 4 is circuit connection diagrams of the present utility model.
Five, the specific embodiment:
2-4 describes the technical solution of the utility model below in conjunction with accompanying drawing: comprise distant quick-fried system, activating system, artifical resistance, detonator and power supply, described distant quick-fried system mainly is made up of encoder and decoder, encoder is fixed on the acquisition instrument main frame, decoder is placed on the shot point place, after activating system and the charging of existing distant quick-fried system finish, wait for the encoder time break, when time break transmits, existing distant quick-fried system passes to activating system with time break, discharge the self capacity electric charge by artifical resistance simultaneously, produce checking TB signal and give instrument, and activating system receives behind the time break detonating capsule immediately.
Above-mentioned activating system mainly by high-pressure modular, organize electric capacity, controllable silicon, relay more and be electrically connected and form, described high-pressure modular powers up the back and gives the charging of many group electric capacity, when being charged to the given voltage value, stops automatically charging;
Controllable silicon is electrically connected with detonator, when time break transmits, and the controllable silicon conducting, high-pressure modular and electric capacity to the detonator discharge, excite detonator simultaneously, and behind the cap sensitive, the controllable silicon automatic cut-off, the high-pressure modular outage, residual charge is by discharging on the electric capacity.
With reference to accompanying drawing 4, describe the activating system operation principle in detail: press SW1 earlier, then J1 and J2 adhesive.At this moment, K11, K12 closure, high-pressure modular is powered; Simultaneously, K21, K22 closure are charged to electric capacity.Whole charging process is monitored by voltmeter head.When being charged to the given voltage value, stop charging automatically.At this moment, press SW2, the J3 adhesive, conversion takes place in K31, K32 position, is converted to normal conducting battle by normally closed some conducting, and detonator is connected with controllable silicon, waits for time break.As time break when blaster transmits, controllable silicon SCR 1 conducting, high-pressure modular and electric capacity to the detonator discharge, excite detonator simultaneously.Behind the cap sensitive, the SCR1 automatic cut-off.Discharge SW2 this moment, J3 disconnects, and K31, K32 return to normally closed some closure state.Then, discharge SW1, J1 and J2 disconnect, the high-pressure modular outage, and residual charge discharges by R3 on the electric capacity.
Various unsafe factors at existing in the construction, designed special holding circuit:
1, the detonator accident is detonated.After the electric capacity charging, break down and conducting as controllable silicon, the unintended detonation detonator.For this reason, designed protective wire L1.Before the switch SW 2 of detonating is pressed, not adhesive of J3, K31, K32 are in normally closed position, have guaranteed that the detonator two ends are by short circuit.
2, insufficient or do not discharged as capacitor discharge, will there be 800V left and right sides high pressure at the electric capacity two ends, might cause electric shock to the operator.For this reason, designed discharge resistance R1, when charge switch SW1 discharged, J1 discharged, and K11, K12 return to normally closed point, by R1 residual charge on the electric capacity are bled off rapidly, made electric capacity two ends (in non-ignition constantly) remain zero potential.
3, storage battery reverse connecting protection: in case exciter power supply storage battery oppositely inserts, because the protective effect of input diode, entire circuit is not worked, and guarantees that exciter is not damaged.
In addition, the utility model activating system is tested in the indoor inside of doing:
Experiment is done load with fuse, by adjusting voltage and capacitance, has carried out serial experiment.According to experimental result, take into full account the cable voltage ability, final definite: the voltage of activating system is 800V, and capacitance is 400uF.
The utility model activating system is done inner experiment in the open air:
For confirming that activating system whether can reliably working,, carried out connection experiment in kind (use MACHA decoder) with intending power supply for construction cable (the RVSP project is intended using cable, and 5000m are long, 7 cores) and plain detonator in Shengli Oil Field physical prospecting three VSP teams of group.Result of the test confirms: this system can reliably excite plain detonator by the construction cable.
Indoor and field trial confirms that activating system can reliably excite plain detonator, this exciter by the 5000m cable Mainly has following characteristics: 1, can produce checking TB signal. 2, net synchronization capability is good, does not substantially exist time-delay (to receive Second the level). 3, have perfect safety precautions, do not have potential safety hazard. 4, the own stable performance of equipment, reliable. 5, can not cause any damage to the use cable. 6, has the storage battery reversal connection protection function.
Claims (4)
1, the contrary distant quick-fried activating system of VSP of a kind of deep-well, it is characterized in that: comprise distant quick-fried system, activating system, artifical resistance, detonator and power supply, described distant quick-fried system mainly is made up of encoder and decoder, and encoder is fixed on the acquisition instrument main frame, and decoder is placed on the shot point place; Described activating system mainly by high-pressure modular, organize electric capacity, controllable silicon and relay more and be electrically connected and form, described high-pressure modular powers up the back and charges for many group electric capacity, controllable silicon is electrically connected with detonator; Described high-pressure modular is connected voltmeter with organize between the electric capacity more, and charging process is monitored by voltmeter head.
2, the contrary distant quick-fried activating system of VSP of deep-well according to claim 1 is characterized in that: be provided with protective wire (L1) between described controllable silicon and the detonator.
3, the contrary distant quick-fried activating system of VSP of deep-well according to claim 1 is characterized in that: described high-pressure modular is connected discharge resistance with organize between the electric capacity more.
4, the contrary distant quick-fried activating system of VSP of deep-well according to claim 1 is characterized in that: be electrically connected the input diode between described power supply and the activating system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200278248U CN201352095Y (en) | 2008-09-04 | 2008-09-04 | Inverse VSP remote explosion exciting system of deep well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200278248U CN201352095Y (en) | 2008-09-04 | 2008-09-04 | Inverse VSP remote explosion exciting system of deep well |
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| Publication Number | Publication Date |
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| CN201352095Y true CN201352095Y (en) | 2009-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200278248U Expired - Fee Related CN201352095Y (en) | 2008-09-04 | 2008-09-04 | Inverse VSP remote explosion exciting system of deep well |
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| CN (1) | CN201352095Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806562A (en) * | 2010-04-06 | 2010-08-18 | 中南大学 | Electric detonator initiation control method and device used for tunnel geological forecast |
| CN111193518A (en) * | 2020-03-03 | 2020-05-22 | 太原理工大学 | Method for simulating Boom Box encoder by using music player |
-
2008
- 2008-09-04 CN CNU2008200278248U patent/CN201352095Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806562A (en) * | 2010-04-06 | 2010-08-18 | 中南大学 | Electric detonator initiation control method and device used for tunnel geological forecast |
| CN101806562B (en) * | 2010-04-06 | 2013-03-13 | 中南大学 | Electric detonator initiation control method and device used for tunnel geological forecast |
| CN111193518A (en) * | 2020-03-03 | 2020-05-22 | 太原理工大学 | Method for simulating Boom Box encoder by using music player |
| CN111193518B (en) * | 2020-03-03 | 2023-10-17 | 太原理工大学 | Method for simulating Boom Box encoder by using music player |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20110904 |