CN201915918U - Oil and gas well downhole liquid-electric fracturing composite perforator - Google Patents
Oil and gas well downhole liquid-electric fracturing composite perforator Download PDFInfo
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- CN201915918U CN201915918U CN2010206163349U CN201020616334U CN201915918U CN 201915918 U CN201915918 U CN 201915918U CN 2010206163349 U CN2010206163349 U CN 2010206163349U CN 201020616334 U CN201020616334 U CN 201020616334U CN 201915918 U CN201915918 U CN 201915918U
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- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000004891 communication Methods 0.000 claims abstract description 11
- 230000002452 interceptive effect Effects 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 59
- 230000000694 effects Effects 0.000 claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000003208 petroleum Substances 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 abstract 3
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 235000019198 oils Nutrition 0.000 description 14
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- 238000010586 diagram Methods 0.000 description 7
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- 230000015572 biosynthetic process Effects 0.000 description 2
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Abstract
The utility model relates to an oil and gas well downhole perforator in the field of oil production, in particular to an oil and gas well downhole liquid-electric fracturing composite perforator, which aims at solving the problems of adhesion and plugging and fracturing of perforations formed when the oil and gas well downhole perforating charge technology acts on rocks and can improve the yield of an oil and gas well. The oil and gas well downhole perforator in the field of oil production comprises a wellhead delay synchronous control module, a liquid-electric fracturing composite perforation gun module, a downhole pressure withstanding and heat absorption module, a communication cable and a bearing structure, wherein the wellhead delay synchronous control module comprises a human-computer interactive control module and a technological delay circuit module; the liquid-electric fracturing composite perforation gun module comprises a liquid-electric fracturing device and a common perforation device; the common perforation device comprises a perforation gun and a pressure sensor; and the wellhead delay synchronous control module is connected with the liquid-electric fracturing composite perforation gun module through the communication cable. The perforator is applied to the petroleum field for solving the problems of oil and gas well downhole perforation plugging and the like.
Description
Technical field
The utility model relates to the oil gas downhole perforation device and the perforating methods in a kind of Petroleum Production field, particularly relates to a kind of oil gas down-hole, Petroleum Production field liquid voltage of electrohydraulic effect that utilizes and splits composite gun perforation device and perforating methods.
Background technology
When discharging, the flash of high-voltage great-current can produce high temperature and pressure in liquid, Here it is electrohydraulic effect.In airtight container, use electrohydraulic effect, can produce powerful shock wave.It is a kind of novel perforating technology that proposes according to the development of perforating technology at present that oil gas down-hole liquid voltage splits perforating system, this technology produces high-voltage great-current in profit electrohydraulic effect and perforating bullet technology (or the perforating and fracturing technology, perforation is the oil exploration mature technique.Pressure break makes it fracture after to be the electrohydraulic effect mentioned of this patent to the pressure of rock stratum increase) combine.By precision control electrohydraulic effect generation time, can reach perforation and pressure break dual purpose, effectively solve the perforation bonding that forms after the perforating bullet effect and stop up the perforation crack problem, and can widen and extend the crack that perforation forms, make it to intersect with dry, around pit shaft, form fracture network, effectively improve the oil gas production capacity.
The Chinese patent literature patent No. 02117213.7 discloses name and has been called " electrohydraulic effect boiler ", has adopted high-voltage pulse continuous discharge in water to make the boiler heating.The Chinese patent literature patent No. 200820027872.7 discloses name and has been called " electrohydraulic effect well-flushing apparatus for eliminating sludge ", adopts electrion to produce the physical method scale removal that shock wave produces.The two all is to adopt continuous impulse, does not need discharging time is done accurately control, compares with this device in addition, and both pulse powers are much smaller, can not effectively solve the perforation bonding that forms after the perforating bullet effect and stop up the perforation crack problem.
Summary of the invention
The purpose of this utility model is to solve the perforation bonding obstruction perforation crack problem that oil gas downhole perforation bullet technical role forms in rock in the prior art, provide a kind of oil gas down-hole liquid voltage to split the composite gun perforation device, by electrohydraulic effect and the perforating bullet technology (or perforating and fracturing technology) that in profit, produces in conjunction with high-voltage great-current, by precision control electrohydraulic effect generation time, effectively solve the problem that prior art exists, improve the oil gas well capacity.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of oil gas down-hole liquid voltage splits the composite gun perforation device, comprising: aboveground time-delay synchronization control module, liquid voltage split the composite perforation gun module, the down-hole is withstand voltage and heat-absorbing model,
Aboveground time-delay synchronization control module comprise the trigger delay time that is provided with, pulse width, and send the triggering signal of control perforating gun emission the human-computer interactive control module, send the count delay circuit module of the delay pulse of accurate gauge tap S break-make;
Liquid voltage splits the composite perforation gun module and comprises that the liquid voltage that produces electrohydraulic effect splits device, common perforating system, and common perforating system comprises perforating gun, the pressure sensor of launching perforating bullet;
The down-hole is withstand voltage and heat-absorbing model comprise make liquid voltage split the composite gun perforation module with the directly contact and be not in the steel vessel of a relative airtight environment of external high temperature high-pressure fluid;
Aboveground time-delay synchronization control module is split the composite perforation gun module with liquid voltage and is electrically connected, liquid voltage splits the composite perforation gun module and is built in withstand voltage and heat-absorbing model, wherein: the human-computer interactive control module is electrically connected with the count delay circuit module, the count delay circuit module splits apparatus module with liquid voltage and is electrically connected, count delay circuit module, perforating gun, pressure sensor are electrically connected in proper order, and the pressure sensor signal output is electrically connected with count delay circuit module input.
Described oil gas down-hole liquid voltage splits the composite gun perforation device and comprises that also aboveground time-delay synchronization control module of connection and liquid voltage split the communication cable with load-carrying members of composite perforation gun module.
The liquid voltage that described liquid voltage splits the composite perforation gun module splits apparatus module and common perforating system module can be carried out integrated design, also can use as two parts separately.
From above-mentioned architectural feature of the present utility model as can be seen, its advantage is:
Effectively solve the perforation bonding that forms after the perforating bullet effect and stop up the perforation crack problem, and can widen and extend the crack that perforation forms, make it to intersect, around pit shaft, form fracture network, effectively improve the oil gas production capacity with dry.
Description of drawings
The utility model will illustrate by way of compared with accompanying drawings and combined with example:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is theory diagram figure of the present utility model;
Fig. 3 is that liquid voltage of the present utility model splits the apparatus module circuit theory diagrams;
Fig. 3 is that liquid voltage of the present utility model splits composite gun perforation module working time schematic diagram.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Design principle is analyzed: in Petroleum Production, perforating bullet passes the rock stratum can form perforation, but common perforation size is only determined by the perforating bullet diameter, keep high-temperature liquid state in the short time of perforation chamber wall after perforating bullet passes, begin bondingly afterwards, the perforation effective diameter is reduced gradually even stop up perforation.If in not the be under pressure impact of ripple of the time period of bonding as yet of perforation chamber wall, the liquid cavity of perforation will enlarge.Effectively solve the perforation bonding that forms after the perforating bullet effect and stop up the perforation crack problem, and can widen and extend the crack that perforation forms, make it to intersect, around pit shaft, form fracture network, effectively improve the oil gas production capacity with dry.
General arrangement: oil gas down-hole liquid voltage splits that device comprises that aboveground system control module, liquid voltage split the composite perforation gun module, the down-hole is withstand voltage and heat-absorbing model, communication cable.As Fig. 1 structural representation of the present utility model; wherein aboveground time-delay synchronization control module is used for accurately controlling the generation moment of flash; send triggering signal; liquid voltage splits the composite perforation gun module and is used to launch perforating bullet and gauge tap in order to produce the forceful electric power pulse; the down-hole is withstand voltage and heat-absorbing model is used to protect liquid voltage to split the composite perforation gun module; communication cable comprises its load-carrying construction, is used for signal and communication and load.Aboveground time-delay synchronization control module is split the composite gun perforation gun apparatus by communication cable and liquid voltage and is connected.Liquid voltage split the composite perforation gun module be fixed in withstand voltage and heat-absorbing model in.
Aboveground time-delay synchronization control module produces triggering signal control perforating gun x time, and the perforating gun x time that splits in the perforating gun module with liquid voltage is done accurate delay again.Postpone stepping and can reach 1ns, postpone precision and can reach ± 5ns.Form at perforation, as yet not the bonding time period, produce electrohydraulic effect by high-voltage great-current instantaneous discharge in profit, in the confined space of subterranean strata, the oil-water mixture body produces the high-voltage pulse compression wave, act on the perforation that does not bond as yet, further enlarge the liquid cavity that liquid voltage splits the perforation of perforating gun shooting formation.As Fig. 2 is theory diagram of the present utility model.
1. aboveground time-delay synchronization control module
And upward the time-delay synchronization control module comprises human-computer interactive control module, count delay circuit module.The human-computer interactive control module is provided with trigger delay time and pulse width and sends triggering signal, by 485 Serial Control buses and the communication of count delay circuit module, the count delay circuit module utilizes VHDL language and schematic diagram hybrid programming to design by FPGA, the count delay circuit module is finished counting and data relatively, and the output control signal comes liquid voltage that liquid voltage under the control well splits the composite gun perforation module to split device to produce electrohydraulic effect.
The count delay circuit module is a benchmark with pressure sensor signal (or perforating bullet x time signal), at the ejecting gun of determining after launch time, by the trigger delay time contrast that is provided with the human-computer interactive control module, it is closed or disconnect to send control signal gauge tap S.When device is postponed to control, need obtain the shake of perforating gun by debug system, the speed of perforating bullet in liquid etc., and then obtain t1, t2, t4 time etc., reaction time of depending on perforating gun of t1 time wherein, the t2 time is depended on the flight time of perforating bullet, and the t4 time is depended on the bonding speed of perforation cavity, and pulse width depends on the energy that produces the electrohydraulic effect needs.
2. liquid voltage splits the composite gun perforation module
Liquid voltage splits the composite gun perforation module and comprises that liquid voltage splits device, common perforating system, and wherein common perforating system comprises perforating gun, pressure sensor.Down-hole liquid voltage splits device and common perforating system can connect into an integral body, carries out integrated design, forms liquid voltage and split the composite perforation gun module; Also can use as two parts separately.The count delay circuit module comes the closed and disconnection of gauge tap S (adopting high pressure high-current switch such as hydrogen thyratron) by sending accurate delay pulse, liquid voltage splits device and utilizes the flash sparking electrode, make capacitor discharge produce high-voltage great-current, produce electrohydraulic effect.When high pressure pulse discharge takes place in liquid, can produce strong blast in the liquid, its surge can reach 10
7～10
9Pa MPa, Here it is so-called electrohydraulic effect.Fig. 3 is that down-hole liquid voltage splits the apparatus module circuit theory diagrams.Its course of work is: in advance capacitor C 1 is charged to designated value, after the human-computer interactive control module sends triggering signal then, count delay circuit module process precision time delay is after the time, the signal of output control switch S, make the switch S closure, by the flash sparking electrode, go up short circuit dischange at load R1 (reality is the oil-water mixture body of down-hole) and produce high-voltage great-current, form electrohydraulic effect.Pulse high current discharges by point electrode, and its discharge time, discharge current was 10 in the microsecond magnitude
4～10
5The A magnitude, so the oil-water mixture body between the point electrode obtains very big energy in a short period of time, temperature can reach 10
4The K magnitude, pressure can reach 10
7～10
9The Pa magnitude.Because the underground oil-water mixing material is incompressible, electrohydraulic effect produces directed percussive pressure Reeb, and crest pressure can reach 10
4～10
5The atm magnitude, making as yet not, the perforating bullet cavity of bonding enlarges.
3. the withstand voltage and heat-absorbing model in down-hole
The down-hole is withstand voltage and heat-absorbing model is the steel vessel that an inwall adopts energy-absorbing material and heat-barrier material design.Liquid voltage splits the composite gun perforation module and is placed in this steel vessel, make liquid voltage split the composite gun perforation module and be not in a relative airtight environment with the direct contact of external high temperature high-pressure fluid, wherein heat-barrier material can be selected thermal insulation material " foamed ceramics " for use, inhales the heat accumulation alloy that (energy) hot material can be selected materials such as containing bismuth, tin, lead for use.
Fig. 4 is that liquid voltage splits composite gun perforation module working time schematic diagram.The human-computer interactive control module of aboveground time-delay synchronization control module is sent triggering signal at moment t0, signal send and perforating gun through communication cable, because the transmission delay of communication cable and the response delay of perforating gun, make the signal transmission produce certain delay time, perforating gun is given the count delay circuit module by pressure sensor returning pressure signal when the emission perforating bullet, the count delay circuit module is by the variation of pressure sensor pressure, write down emission and play x time t1, the count delay circuit module forms t2 and bonding moment t4 constantly according to perforation, by the default trigger delay time Δ t=(t4+t2) of human-computer interactive control module/2-t1, poor as perforating gun launch time and perforation formation time, set pulse daley amount Δ t.When switch S was kept closed, the time that electrohydraulic effect is kept depended mainly on the time of capacitor discharge, and therefore for guarantee that electric capacity discharges in the time period that is fit to, the pulse width W of setting is that switch remains closed the time, generally chooses hundreds of ns to hundreds of μ s.When the count delay circuit module detected perforating gun emission t1, the count delay circuit module began counting, and compared relative size, the closure and the disconnection that come gauge tap S with Δ t simultaneously.When count value data t＜Δ t, switch S disconnects, and system does not produce electrohydraulic effect; When count value data Δ t≤t≤Δ t+W, the switch S closure, system produces electrohydraulic effect; As count value data t＞Δ t+W, switch S disconnects, and system does not produce electrohydraulic effect, utilizes this principle to guarantee that flash discharging time t3 is between t2 and t4.
Disclosed all features in this manual except mutually exclusive feature, all can make up by any way.
Disclosed arbitrary feature in this manual (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
Claims (3)
1. an oil gas down-hole liquid voltage splits the composite gun perforation device, it is characterized in that comprising: aboveground time-delay synchronization control module, liquid voltage split the composite perforation gun module, the down-hole is withstand voltage and heat-absorbing model,
Aboveground time-delay synchronization control module comprise the trigger delay time that is provided with, pulse width, and send the triggering signal of control perforating gun emission the human-computer interactive control module, send the count delay circuit module of the delay pulse of accurate gauge tap S break-make;
Liquid voltage splits the composite perforation gun module and comprises that the liquid voltage that produces electrohydraulic effect splits device, common perforating system, and common perforating system comprises perforating gun, the pressure sensor of launching perforating bullet;
The down-hole is withstand voltage and heat-absorbing model comprises and makes liquid voltage split that composite gun perforation module and external high temperature high-pressure fluid are isolated and the steel vessel that is in a relative closed environment;
Aboveground time-delay synchronization control module is split the composite perforation gun module with liquid voltage and is electrically connected, liquid voltage splits the composite perforation gun module and is built in withstand voltage and heat-absorbing model, wherein: the human-computer interactive control module is electrically connected with the count delay circuit module, the count delay circuit module splits apparatus module with liquid voltage and is electrically connected, count delay circuit module, perforating gun, pressure sensor are electrically connected in proper order, and the pressure sensor signal output is electrically connected with count delay circuit module input.
2. a kind of oil gas according to claim 1 down-hole liquid voltage splits the composite gun perforation device, it is characterized in that described oil gas down-hole liquid voltage splits the composite gun perforation device and comprises that also aboveground time-delay synchronization control module of connection and liquid voltage split the communication cable with load-carrying members of composite perforation gun module.
3. a kind of oil gas according to claim 1 down-hole liquid voltage splits the composite gun perforation device, it is characterized in that liquid voltage that described liquid voltage splits the composite perforation gun module splits apparatus module and common perforating system module is an overall structure, or isolating construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206163349U CN201915918U (en) | 2010-11-19 | 2010-11-19 | Oil and gas well downhole liquid-electric fracturing composite perforator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206163349U CN201915918U (en) | 2010-11-19 | 2010-11-19 | Oil and gas well downhole liquid-electric fracturing composite perforator |
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|---|---|
| CN201915918U true CN201915918U (en) | 2011-08-03 |
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| CN2010206163349U Expired - Fee Related CN201915918U (en) | 2010-11-19 | 2010-11-19 | Oil and gas well downhole liquid-electric fracturing composite perforator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094604A (en) * | 2010-11-19 | 2011-06-15 | 中国工程物理研究院流体物理研究所 | Composite perforation device and perforation method for underground oil/gas electro-hydraulic fracturing |
| CN104047585A (en) * | 2013-03-13 | 2014-09-17 | 中国石油化工股份有限公司 | Pulse fracturing device and method |
| CN115977592A (en) * | 2023-03-01 | 2023-04-18 | 电子科技大学 | Speed-frequency self-adaptive clock applied to wireless perforation system |
-
2010
- 2010-11-19 CN CN2010206163349U patent/CN201915918U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094604A (en) * | 2010-11-19 | 2011-06-15 | 中国工程物理研究院流体物理研究所 | Composite perforation device and perforation method for underground oil/gas electro-hydraulic fracturing |
| CN102094604B (en) * | 2010-11-19 | 2013-08-07 | 中国工程物理研究院流体物理研究所 | Composite perforation device and perforation method for underground oil/gas electro-hydraulic fracturing |
| CN104047585A (en) * | 2013-03-13 | 2014-09-17 | 中国石油化工股份有限公司 | Pulse fracturing device and method |
| CN115977592A (en) * | 2023-03-01 | 2023-04-18 | 电子科技大学 | Speed-frequency self-adaptive clock applied to wireless perforation system |
| CN115977592B (en) * | 2023-03-01 | 2024-05-17 | 电子科技大学 | A velocity-frequency adaptive clock for wireless perforating system |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20151119 |
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| EXPY | Termination of patent right or utility model |