CN204283419U - Continuous Tracer well logying instrument - Google Patents
Continuous Tracer well logying instrument Download PDFInfo
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- CN204283419U CN204283419U CN201420719428.7U CN201420719428U CN204283419U CN 204283419 U CN204283419 U CN 204283419U CN 201420719428 U CN201420719428 U CN 201420719428U CN 204283419 U CN204283419 U CN 204283419U
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Abstract
The utility model discloses a kind of Tracer well logying instrument continuously, comprise: housing, it connects with injector head and gamma instrument respectively, in housing, skeleton is installed, skeleton internal fixtion has motor, shaft coupling, screw mandrel, control circuit board, the storage barrel depositing radioactive tracer is also provided with in housing, storage barrel is provided with piston, piston is through screw mandrel, shaft coupling connects with the turning cylinder of motor, storage barrel is communicated with the spray-hole on injector head, it is characterized in that, shaft coupling is provided with magnet, position corresponding on skeleton is provided with Hall element, Hall element, motor is connected with control circuit board respectively, control circuit board is electrically connected with gamma instrument, the action of control circuit board energy control piston.Spray-hole is at least provided with two.The utility model have easy to operate, save time, reduce the consumption of radioactive material, reduce environment pollution, the beneficial effect of increasing work efficiency.
Description
Technical field
The utility model relates to a kind of isotope tracer method for detecting and logging instrument thereof continuously.
Background technology
In existing oil reservoir logging process, in order to monitor oil well each layer position situation, need to do intake profile in tracer results of regular determination well with radioactive tracer such as isotopic carrier, at present, a certain degree of depth release isotopic carrier in pit shaft, the most frequently used mode is exactly electric releaser, but can not measure in each dispose procedure release liquid number, can not quantitatively discharge, each well logging all needs to fill up Indium isotopes, after having logged well, unnecessary isotope is directly emitted on inside oil well, not only waste, and excessive isotope is to environment, larger to human injury, in addition, complete once test time, the uncertain reason in down-hole can be a lot, data may be not ideal, needs retest, traditional measuring method, then need instrument to be returned ground perfusion isotopic carrier, the well depth of domestic oil well is at a few km, time once required back and forth wants several hours, efficiency is very low.
In prior art, as long as spray-hole one, can only spray towards a direction, in fact, this structure is defective, when the direction of spraying is along current, isotope disappears very fast, therefore, logging effect can significantly reduce, go into the well due to instrument and can not guarantee the direction of jet blower in process, the direction of down-hole current is not known yet, therefore, along current when completely likely spraying, in order to solve this technical problem, described spray-hole, one way valve, the structure that cavity is formed at least is provided with two, circumferentially direction is uniform, radioactive tracer can spray from these spray-holes, at least have a shower nozzle to move along current, thus extend the time of isotope stop.
As preferably, described spray-hole is provided with four.
The utility model have easy to operate, save time, reduce the consumption of radioactive material, reduce environment pollution, the beneficial effect of increasing work efficiency.
Utility model content
The utility model, according to above not enough, provide a kind of isotope tracer method for detecting continuously, logging well, can significantly improve logging efficiency by repeatedly discharging radioactive tracer.
The technical solution of the utility model is:
A logging method for continuous Tracer well logying instrument, is characterized in that, as follows:
A. by cable by under the logging instrument of continuous spike in well, logging instrument nozzle is positioned at above water nozzle to be measured, horn mouth or near destination layer position;
B. instruction is sent by aboveground control instrument, radioactive tracer such as isotope ejection;
C. send instruction by aboveground control instrument, continuous Tracer well logying instrument moves up and down above water nozzle, horn mouth or centered by destination layer position and repeatedly follows the tracks of radioactive tracer, and according to the position of movement, gamma instrument record detects curve data;
D. do computing by the data of any two curves and can obtain depth difference △ hi between two pulses and time interval △ ti, thus flow velocity Vi and the flow Qi of water on this depth interval can be obtained.
By calculating flow Q1, the Q2 in the variant degree of depth ... Qn, then the water absorption on each stratum can be calculated as Qn=Q2-Q1 with the differential technique that successively decreases,
Wherein, k refers to correction coefficient, and oil pipe section gets 2 ~ 3; Annular space section gets 6.5 ~ 7.5; Sleeve pipe section gets 10.5 ~ 11.5, s refers to the cross-sectional area by fluid, cross-sectional area is bore, be known, vs just refers to that flow velocity is multiplied by area and equals flow, and Q is flow, such as the flow of bottom, No. 1 stratum is Q1, the flow on top is Q2, and so the difference of Q2-Q1 is exactly the flow entering stratum, and the rest may be inferred.
The data tested out sometimes, can the impact of the factor such as coarse and tube wall long-term corrosion by the impact of each side such as instrument itself, operational issue, injection water quality inferiority, vias inner walls, data may be not clear, not too accurate etc., described logging instrument nozzle moves near the water nozzle tested first, radioactive tracer sprays again, repeat step C, step D, obtain data more accurately.
When in the comparatively ideal situation of data acquisition first, described logging instrument nozzle moves to the water nozzle tested first above or below water nozzle, radioactive tracer is sprayed again, repeat step C, step D, obtain the data of again testing, in fact, the data of testing first also likely can include the content of the data of again testing, but the place of testing location distance test data is first far away again, the decay of signal is more weak, but this more weak signal data, can as reference data when again testing.
Because the water absorbing capacity on each stratum is different, once release can be subject to the impact of the factor such as flow velocity, stratum injection index, explains that accuracy can be affected; Adopt the words repeatedly discharged, can discharge targetedly, calculate the water suction situation on each water nozzle and each stratum and oil pipe, sleeve pipe and packer leakage situation etc. accurately, look for leakage for oil pipe, mainly by discharging tracer from the bottom up in oil pipe, calculated flow rate looks for leak source, in order to improve Explanation Accuracy, must correct cross-sectional area, above-mentioned COEFFICIENT K is through a large amount of experimental summary out.
The direction of described radioactive tracer ejection is uniform at least both direction.It should be noted that, the instrument of both direction is relatively simple.
Further, the direction of described radioactive tracer ejection is four direction.
The invention also discloses a kind of logging instrument of continuous spike, comprise: housing, it connects with injector head and gamma instrument respectively, in housing, skeleton is installed, skeleton internal fixtion has motor, shaft coupling, screw mandrel, control circuit board, the storage barrel depositing radioactive tracer is also provided with in housing, storage barrel is provided with piston, piston is through screw mandrel, shaft coupling connects with the turning cylinder of motor, storage barrel is communicated with the spray-hole on injector head, it is characterized in that, shaft coupling is provided with magnet, position corresponding on skeleton is provided with Hall element, Hall element, motor is connected with control circuit board respectively, control circuit board is electrically connected with gamma instrument, control circuit board receives after Hall element exports predetermined umber of pulse, piston can stop mobile.The action of control circuit board energy control piston, or stop or moving.
Cavity is provided with in described injector head, one end of this cavity is communicated with described spray-hole, the other end of this cavity is provided with import, the outlet of this import and described storage barrel, import department is provided with one way valve, this one way valve comprises: valve block and stage clip, valve block is fixed with sealing ring and is provided with through hole, import can be sealed in the effect lower seal of stage clip, described piston moves can be pushed open valve block by radioactive tracer, radioactive tracer sprays from spray-hole, injector head is also provided with perfusing hole, this perfusing hole is communicated with storage barrel, perfusing hole is provided with seal cover.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model Hall element is relevant.
Fig. 2 is the structural representation that the utility model spray-hole is relevant.
Fig. 3 is the structural representation that the utility model valve block is relevant.
Detailed description of the invention
Introduce the embodiment of formula application in the logging method of continuous Tracer well logying instrument below, such as certain water injection well is by normal daily water-injection rate water filling, certain perforated zone is entered under the water injected into well is backward by water nozzle water inlet oil jacket annular space, the flow velocity that logging instrument records fluid above perforated zone is V2, the flow velocity recording fluid in perforated zone is V1, fluid the area of oil jacket annular space of process be S, flow then above perforation layer is Q2=KV2S, flow below perforation layer is Q1=KV1S, so enter the flow △ Q=Q2-Q1 of perforation layer, K in formula is that annular space section gets 6.5 ~ 7.5.
Introduce a kind of Tracer well logying instrument continuously below, as shown in the figure, comprise: housing 1, it connects with injector head 6 and gamma instrument respectively, skeleton 3 is installed in housing 1, skeleton 3 internal fixtion has motor 7, shaft coupling 41, screw mandrel 42, control circuit board, the storage barrel 52 depositing radioactive tracer is also provided with in housing 1, storage barrel 52 is provided with piston 51, piston 51 is through screw mandrel 42, shaft coupling 41 connects with the turning cylinder of motor, storage barrel 52 is communicated with the spray-hole 62 on injector head 6, shaft coupling 41 is provided with magnet 22, position corresponding on skeleton 3 is provided with Hall element 21, Hall element 21, motor 7 is connected with control circuit board respectively, control circuit board is electrically connected with gamma instrument, the action of control circuit board energy control piston 51, control circuit board receives after Hall element 21 exports predetermined umber of pulse, piston 51 can stop mobile, when needs spray again, piston 51 continues mobile.
Cavity 64 is provided with in injector head 6, one end of this cavity 64 is communicated with described spray-hole 62, the other end of this cavity 64 is provided with import, the outlet of this import and described storage barrel 52, import department is provided with one way valve, this one way valve comprises: valve block 61 and stage clip 63, valve block 61 be fixed with sealing ring 60 and be provided with through hole 612, import can be sealed in the effect lower seal 60 of stage clip 63, piston 51 moves can be pushed open valve block 61 by radioactive tracer, radioactive tracer sprays from spray-hole 62, injector head 6 is also provided with perfusing hole 8, this perfusing hole 8 is communicated with storage barrel 52, perfusing hole 8 is provided with seal cover.
The structure that spray-hole 62, one way valve, cavity 64 are formed at least is provided with two, and circumferentially direction is uniform, and radioactive tracer can spray from these spray-holes 62.
Spray-hole 62 is provided with four.
Claims (4)
1. a continuous Tracer well logying instrument, comprise: housing (1), it connects with injector head (6) and gamma instrument respectively, skeleton (3) is installed in housing (1), skeleton (3) internal fixtion has motor (7), shaft coupling (41), screw mandrel (42), control circuit board, the storage barrel (52) depositing radioactive tracer is also provided with in housing (1), storage barrel (52) is provided with piston (51), piston (51) is through screw mandrel (42), shaft coupling (41) connects with the turning cylinder of motor, storage barrel (52) is communicated with the spray-hole (62) on injector head (6), it is characterized in that, shaft coupling (41) is provided with magnet (22), upper corresponding position is provided with Hall element (21) to skeleton (3), Hall element (21), motor (7) is connected with control circuit board respectively, control circuit board is electrically connected with gamma instrument, the action of control circuit board energy control piston (51).
2. a kind of Tracer well logying instrument continuously as claimed in claim 1, it is characterized in that, cavity (64) is provided with in described injector head (6), one end of this cavity (64) is communicated with described spray-hole (62), the other end of this cavity (64) is provided with import, the outlet of this import and described storage barrel (52), import department is provided with one way valve, this one way valve comprises: valve block (61) and stage clip (63), valve block (61) be fixed with sealing ring (60) and be provided with through hole (612), import can be sealed in the effect lower seal (60) of stage clip (63), described piston (51) is mobile can be pushed open valve block (61) by radioactive tracer, radioactive tracer sprays from spray-hole (62), injector head (6) is also provided with perfusing hole (8), this perfusing hole (8) is communicated with storage barrel (52), perfusing hole (8) is provided with seal cover.
3. a kind of Tracer well logying instrument continuously as claimed in claim 2, it is characterized in that, the structure that described spray-hole (62), one way valve, cavity (64) are formed at least is provided with two, and circumferentially direction is uniform, and radioactive tracer can spray from these spray-holes (62).
4. a kind of Tracer well logying instrument continuously as claimed in claim 3, it is characterized in that, described spray-hole (62) is provided with four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420719428.7U CN204283419U (en) | 2014-11-26 | 2014-11-26 | Continuous Tracer well logying instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420719428.7U CN204283419U (en) | 2014-11-26 | 2014-11-26 | Continuous Tracer well logying instrument |
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| CN204283419U true CN204283419U (en) | 2015-04-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481516A (en) * | 2014-11-26 | 2015-04-01 | 杭州泛太石油设备科技有限公司 | Continuous tracer logging method and logger thereof |
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- 2014-11-26 CN CN201420719428.7U patent/CN204283419U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481516A (en) * | 2014-11-26 | 2015-04-01 | 杭州泛太石油设备科技有限公司 | Continuous tracer logging method and logger thereof |
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