CN102839954B - A kind of pressure pulse realizes the method for layering water distribution - Google Patents
A kind of pressure pulse realizes the method for layering water distribution Download PDFInfo
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- CN102839954B CN102839954B CN201110171724.9A CN201110171724A CN102839954B CN 102839954 B CN102839954 B CN 102839954B CN 201110171724 A CN201110171724 A CN 201110171724A CN 102839954 B CN102839954 B CN 102839954B
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Abstract
The invention provides a kind of method that pressure pulse realizes layering water distribution, belong to petroleum gas field.The present invention utilizes the program control generator of well head pressure pulse and is furnished with the separate layer water injection string of intelligent watering device to realize layering water distribution.Utilizing method of the present invention, can complete layering water distribution task by wireless remote control, without the need to carrying out traditional pulling allotment, having saved labour hour and construction cost, is a kind of efficient, the layering decreasing water distribution method that advanced, success rate is high.Simultaneously, the program control generator of well head pressure pulse is used to produce negative pressure pulse, there is not termination of pumping, assist without the need to other construction operation equipment, do not use water under high pressure to make pressure source, the advantage of the layering water distribution effect of three layer positions can be completed within half an hour, also further increase the efficiency of prior art, construction cost and success rate.
Description
Technical field
The invention belongs to petroleum gas field, be specifically related to a kind of method that pressure pulse realizes layering water distribution, for carrying out layering water distribution in separate water injection well.
Background technology
The patent No. is the method that patent discloses a kind of compression wave regulation and control layering water distribution of 200410061228.8, relate to layering water distribution effect in water injection well in oil fields, the interval quantity needing water distribution according to water injection well, the voltage-controlled injection well downhole flow regulator that one group can be received ground pressure signal respectively sets the pressure signal coding of position and action, the program receiving and perform these signals is set, enter under the water injection pipe that the voltage-controlled injection well downhole flow regulator possessing above-mentioned setting is housed in water injection well, and make each injection well downhole flow regulator on it be positioned at corresponding interval; Making pressure source with the water under high pressure that ground high-pressure pump is produced, by the valve on operating pressure source and wellhead assembly, to needing the voltage-controlled injection well downhole flow regulator adjusted on the interval of the water yield to send the pressure code signal corresponding with its action, making it the change producing discharge area.
But there is following defect in this technology:
1, this technology needs before implementing at the scene to suspend ground water injecting pump, until pressure system landing in pit shaft for after close to liquid column hydrostatic pressure, can carry out regulation and control and construct, extend the engineering time to a certain extent.
2, by ground installations such as high-pressure pumps, but need not mention that this high-pressure pump is the ground water injecting pump that construction well correspondence is equipped with or the cementing truck of constructing special allotment in the description when this technology regulates and controls construction at the scene.Suppose that high-pressure pump equipment is the ground water injecting pump that construction well correspondence is equipped with, when this well is not the high-pressure water injection well of individual well list pump, but the remote low pressure water injection well of the many wells of single pump, then carry out the control of remote pressure ripple in the water distribution room of water-injection station quite loaded down with trivial details; Suppose that high-pressure pump equipment is the cementing truck of the special allotment of construction, then add construction cost and working procedure undoubtedly.
3, this technology adopts water under high pressure to there is the failed risk of regulation and control as pressure source.In water injection well in oil fields, differing greatly of different stratum water absorbing capacities, the separate water injection well low for stratum ability, water absorbing capacity is strong, when water under high pressure acts in pit shaft, due to now down-hole water nozzle passage and combination of zones, stratum is equivalent to a current by pass, makes pit shaft play pressure, finally causes regulation and control difficulty even failed.
4, the restriction of pressurized Reeb occurring principle, adopts this technology to carry out the overlong time of compression wave code signal layering water distribution.Three voltage-controlled injection well downhole flow regulators are entered for certain seperated layer water injection down-hole, the time adopting the pressure code signal of this technology to send instruction to a voltage-controlled injection well downhole flow regulator grows up 40 minutes, even if then not free interval in the middle of each pressure code signal, be the time that three voltage-controlled injection well downhole flow regulators send instruction also reach 120 minutes.
Summary of the invention
The object of the invention is to solve the difficult problem existed in above-mentioned prior art, a kind of pressure pulse is provided to realize the method for layering water distribution, by the program control generating means of well head pressure pulse, not termination of pumping, water under high pressure is not used to make pressure source without the need to other construction operation equipment.
The present invention is achieved by the following technical solutions:
Pressure pulse realizes a method for layering water distribution, and described method utilizes the program control generator of well head pressure pulse and is furnished with the separate layer water injection string of intelligent watering device to realize layering water distribution; Said method comprising the steps of:
(1) on the layering water distribution tubing string of down-hole, an intelligent watering device is equipped with at corresponding each water filling layer position place, at the program control generator 4 of well head mounting shaft mouth pressure pulse; The program control generator 4 of described well head pressure pulse is connected with computer 6 by communication cable 5;
(2) command signal is sent by computer 6 to the program control generator 4 of well head pressure pulse, after the program control generator 4 of well head pressure pulse receives command signal, program control generation instruction, opening and closing to produce corresponding negative pressure pulse ripple in water injection well pit shaft simultaneously by gauge tap gate valve 4-3, one group of negative pressure pulse ripple forms the pressure pulse code signal corresponding with described command signal;
(3) described negative pressure pulse ripple is to inject water for carrier, passes to the intelligent watering device of down-hole; Described negative pressure pulse velocity of wave propagation is identical with the transmission speed that sound wave is injecting water;
(4) the pressure pulse code signal received is decoded as executable instruction by the pressure pulse hardware detecting circuit in downhole intelligent injection well downhole flow regulator, then the control software design of downhole intelligent injection well downhole flow regulator controls the aperture size changing water nozzle after adjustable water nozzle performs corresponding instruction, and then realizes layering water distribution.
Instruction in described step (2) is one group of binary number.
The mode that instruction occurs in described step (2) is as follows:
(21) order performs each binary number in instruction;
(22), when performing binary number " 1 ", switch gate valve 4-3 opened instantaneously by the program control generator 4 of well head pressure pulse, closes and maintain 30 seconds after 1 second;
(23), when performing binary number " 0 ", well head pressure pulse program control generator 4 closing switch gate valve 4-3, maintains 30 seconds.
When described switch gate valve 4-3 closes, the pressure in pit shaft is close to water injection pressure, and when switch gate valve 4-3 opens, the pressure in pit shaft is lower than water injection pressure, and described negative pressure pulse ripple is by close to water injection pressure and the waveform combination lower than water injection pressure.
The program control generator 4 of described well head pressure pulse comprises lubricator 4-1, pressure gauge connection 4-2, switch gate valve 4-3, liquid outlet 4-4 and motor transmission mechanism 4-5;
One end of described lubricator 4-1 is connected on tubing thread, and the other end is connected with the entrance point of switch gate valve 4-3, and the port of export of switch gate valve 4-3 is connected with liquid outlet 4-4; Switch gate valve 4-3 is connected with motor transmission mechanism 4-5, and motor transmission mechanism 4-5 is connected with computer 6;
Pipeline between described lubricator 4-1 and switch gate valve 4-3 has pressure gauge connection 4-2, connects pressure meter at pressure gauge connection 4-2 place;
Described computer 6 controls motor transmission mechanism 4-5 with stored program control system, the opening and closing of motor transmission mechanism 4-5 gauge tap gate valve 4-3.
What described switch gate valve 4-3 adopted is Parallel gate valve Parallel slide valve.
Compared with prior art, the invention has the beneficial effects as follows: the present invention can complete layering water distribution task by wireless remote control, without the need to carrying out traditional pulling allotment, having saved labour hour and construction cost, is a kind of efficient, the layering decreasing water distribution method that advanced, success rate is high.Simultaneously, defect for prior art has carried out significantly improving, the program control generator of well head pressure pulse is used to produce negative pressure pulse, there is not termination of pumping, assist without the need to other construction operation equipment, do not use water under high pressure to make pressure source, the advantage of the layering water distribution effect of three layer positions can be completed within half an hour, also further increase the efficiency of prior art, construction cost and success rate.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation of the program control generator of well head pressure pulse in the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Pressure pulse realizes a method for layering water distribution, and described method utilizes the program control generator 4 of well head pressure pulse and is furnished with the separate layer water injection string of intelligent watering device to realize layering water distribution; Said method comprising the steps of:
(1) on the layering water distribution tubing string of down-hole, an intelligent watering device (ZP1, ZP2 and ZP3 in Fig. 1) is equipped with at corresponding each water filling layer position place, at the program control generator 4 of well head mounting shaft mouth pressure pulse; The program control generator 4 of described well head pressure pulse is connected with computer 6 by communication cable 5;
(2) command signal is sent by computer 6 to the program control generator 4 of well head pressure pulse, after the program control generator 4 of well head pressure pulse receives command signal, program control generation instruction, opening and closing to produce corresponding negative pressure pulse ripple in water injection well pit shaft simultaneously by gauge tap gate valve 4-3, one group of negative pressure pulse ripple forms the pressure pulse code signal corresponding with described command signal;
(3) described negative pressure pulse ripple is to inject water for carrier, passes to the intelligent watering device of down-hole; Described negative pressure pulse velocity of wave propagation is identical with the transmission speed that sound wave is injecting water;
(4) the pressure pulse code signal received is decoded as executable instruction by the pressure pulse hardware detecting circuit in downhole intelligent injection well downhole flow regulator, then the control software design of downhole intelligent injection well downhole flow regulator controls to change water nozzle aperture size after adjustable water nozzle performs corresponding instruction, and then realizes layering water distribution (i.e. layering allotment water filling).
When described switch gate valve 4-3 closes, the pressure in pit shaft is close to water injection pressure, and when switch gate valve 4-3 opens, the pressure in pit shaft is lower than water injection pressure, and described negative pressure pulse ripple is by close to water injection pressure and the waveform combination lower than water injection pressure.
What Fig. 1 provided is have three embodiments needing the water injection well of layering water distribution (in Fig. 11,2,3), is less than three layers or also make to use the same method more than the embodiment of three layers.
Provide a concrete operating process below:
For the intelligent watering device be made up of pressure sensor, control circuit, motor, adjustable water nozzle etc., suppose the aperture size of the intelligent watering device ZP1 of position 1, Fig. 1 middle level correspondence to be adjusted to standard-sized sheet, then can operate in accordance with the following steps:
At the program control generating means 4 of water injection well import mounting shaft mouth pressure;
By the instruction software of computer 6, the code of standard-sized sheet instruction is passed to the program control generating means 4 of well head pressure pulse by communication cable 5, standard-sized sheet instruction code is 16 bits: 11,010,010 11001001.Wherein first 2 is synchronous code, and the three to the six is address code, and latter 8 is action code;
After the program control generator 4 of well head pressure pulse receives command signal, program control generation instruction, the mode that instruction occurs follows following rule and principle:
1) order performs 16 bit byte instructions;
2), when performing binary number " 1 ", switch gate valve 4-3 opened instantaneously by the program control generator 4 of well head pressure pulse, closes and maintain 30 seconds after 1 second;
3), when performing binary number " 0 ", well head pressure pulse program control generator 4 closing switch gate valve 4-3, maintains 30 seconds;
4) the program control generator 4 of well head pressure pulse performs the time of one group of 16 bit instruction is 450 seconds, and the time performing three groups of instructions is 1350 (22.5 minutes);
The structure of the program control generator 4 of described well head pressure pulse as shown in Figure 2, comprises lubricator 4-1, pressure gauge connection 4-2, switch gate valve 4-3, liquid outlet 4-4 and motor transmission mechanism 4-5;
One end of described lubricator 4-1 is connected on tubing thread, and the other end is connected with the entrance point of switch gate valve 4-3, and the port of export of switch gate valve 4-3 is connected with liquid outlet 4-4; Switch gate valve 4-3 is connected with motor transmission mechanism 4-5, and motor transmission mechanism 4-5 is connected with computer 6;
Pipeline between described lubricator 4-1 and switch gate valve 4-3 has pressure gauge connection 4-2, connects pressure meter at pressure gauge connection 4-2 place;
Described computer 6 controls motor transmission mechanism 4-5 with stored program control system, the opening and closing of motor transmission mechanism 4-5 gauge tap gate valve 4-3.
What described switch gate valve 4-3 adopted is Parallel gate valve Parallel slide valve.
The program control generator of well head pressure pulse 4 produces corresponding negative pressure pulse ripple while program control generation instruction in water injection well pit shaft, pressure pulse is to inject water for carrier, and being delivered to downhole intelligent injection well downhole flow regulator ZP1 with the transmission speed of sound wave in water injection well, downhole intelligent injection well downhole flow regulator ZP1 is in the instruction by pressure pulse code signal decoding rear execution water nozzle standard-sized sheet.
Technique scheme is one embodiment of the present invention, for those skilled in the art, on the basis that the invention discloses application process and principle, be easy to make various types of improvement or distortion, and the method be not limited only to described by the above-mentioned detailed description of the invention of the present invention, therefore previously described mode is just preferred, and does not have restrictive meaning.
Claims (6)
1. realize a method for layering water distribution with pressure pulse, it is characterized in that: the separate layer water injection string that described method utilizes the program control generator of well head pressure pulse (4) and is furnished with intelligent watering device is to realize layering water distribution; Said method comprising the steps of:
(1) on the layering water distribution tubing string of down-hole, an intelligent watering device is equipped with at corresponding each water filling layer position place, in the program control generator of well head mounting shaft mouth pressure pulse (4); The program control generator of described well head pressure pulse (4) is connected with computer (6) by communication cable (5);
(2) command signal is sent by computer (6) to the program control generator of well head pressure pulse (4), after the program control generator of well head pressure pulse (4) receives command signal, program control generation instruction, that passes through the switch gate valve (4-3) of the program control generator of control well mouth pressure pulse (4) opens and closes the negative pressure pulse ripple producing correspondence in water injection well pit shaft simultaneously, and one group of negative pressure pulse ripple forms the pressure pulse code signal corresponding with described command signal; When described switch gate valve (4-3) closes, pressure in pit shaft is close to water injection pressure, when switch gate valve (4-3) is opened, the pressure in pit shaft is lower than water injection pressure, and described negative pressure pulse ripple is by close to water injection pressure and the waveform combination lower than water injection pressure;
(3) described negative pressure pulse ripple is to inject water for carrier, passes to the intelligent watering device of down-hole;
(4) the pressure pulse code signal received is decoded as executable instruction by the pressure pulse hardware detecting circuit in downhole intelligent injection well downhole flow regulator, then the control software design of downhole intelligent injection well downhole flow regulator controls the aperture size changing water nozzle after adjustable water nozzle performs corresponding instruction, and then realizes layering water distribution.
2. pressure pulse according to claim 1 realizes the method for layering water distribution, it is characterized in that: the instruction in described step (2) is one group of binary number.
3. pressure pulse according to claim 2 realizes the method for layering water distribution, it is characterized in that: the mode that instruction occurs in described step (2) is as follows:
(21) order performs each binary number in instruction;
(22) when performing binary number " 1 ", switch gate valve (4-3) opened instantaneously by the program control generator of well head pressure pulse (4), closes and maintain 30 seconds after 1 second;
(23) when performing binary number " 0 ", the program control generator of well head pressure pulse (4) closing switch gate valve (4-3), maintains 30 seconds.
4. pressure pulse according to claim 1 realizes the method for layering water distribution, it is characterized in that: in described step (3), and described negative pressure pulse velocity of wave propagation is identical with the transmission speed that sound wave is injecting water.
5. pressure pulse according to claim 1 realizes the method for layering water distribution, it is characterized in that: the program control generator of described well head pressure pulse (4) comprises lubricator (4-1), pressure gauge connection (4-2), switch gate valve (4-3), liquid outlet (4-4) and motor transmission mechanism (4-5);
One end of described lubricator (4-1) is connected on tubing thread, and the other end is connected with the entrance point of switch gate valve (4-3), and the port of export of switch gate valve (4-3) is connected with liquid outlet (4-4); Switch gate valve (4-3) is connected with motor transmission mechanism (4-5), and motor transmission mechanism (4-5) is connected with computer (6);
Pipeline between described lubricator (4-1) and switch gate valve (4-3) has pressure gauge connection (4-2), connect pressure meter at pressure gauge connection (4-2) place;
Described computer (6) controls motor transmission mechanism (4-5) with stored program control system, the opening and closing of motor transmission mechanism (4-5) gauge tap gate valve (4-3).
6. pressure pulse according to claim 5 realizes the method for layering water distribution, it is characterized in that: what described switch gate valve (4-3) adopted is Parallel gate valve Parallel slide valve.
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| CN201110171724.9A CN102839954B (en) | 2011-06-24 | 2011-06-24 | A kind of pressure pulse realizes the method for layering water distribution |
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| CN201110171724.9A CN102839954B (en) | 2011-06-24 | 2011-06-24 | A kind of pressure pulse realizes the method for layering water distribution |
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| CN112211603B (en) * | 2019-07-12 | 2023-02-10 | 中国石油天然气股份有限公司 | Stratified water injection system and control method thereof |
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| CN114165192A (en) * | 2021-12-14 | 2022-03-11 | 四川航天烽火伺服控制技术有限公司 | Electrodynamic type well head pressure pulse signal generating device and oil development equipment |
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