CN102839954A - Method for achieving separated layer water distribution by pressure pulse - Google Patents
Method for achieving separated layer water distribution by pressure pulse Download PDFInfo
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- CN102839954A CN102839954A CN2011101717249A CN201110171724A CN102839954A CN 102839954 A CN102839954 A CN 102839954A CN 2011101717249 A CN2011101717249 A CN 2011101717249A CN 201110171724 A CN201110171724 A CN 201110171724A CN 102839954 A CN102839954 A CN 102839954A
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Abstract
The invention provides a method for achieving separated layer water distribution by pressure pulse, and belongs to the field of oil and gas. According to the invention, separated layer water distribution is achieved by a wellhead pressure pulse program-controlled generator and a separated layer water injection string which is equipped with an intelligent water distributor. Through the adoption of the method provided by the invention, a separated layer water distribution task can be wirelessly finished in a remotely controlled way without traditional tripping and blending, so that working time and construction cost are saved; and the method provided by the invention is an efficient and advanced separated layer water distribution method with high success rate. Meanwhile, as the wellhead pressure pulse program-controlled generator is used for generating negative pressure pulse, the method provided by the invention has the advantage that separated layer water distribution effects of three layers can be finished within half an hour without stopping a pump, being assisted by other construction operation equipment and using high pressure water as a pressure source; furthermore, the efficiency and the success rate in the prior art are further increased, and the construction cost in the prior art is further reduced.
Description
Technical field
The invention belongs to the petroleum gas field, be specifically related to a kind of method, be used for carrying out the layering water distribution at separate water injection well with pressure pulse realization layering water distribution.
Background technology
The patent No. is that 200410061228.8 patent discloses a kind of method with compression wave regulation and control layering water distribution; Relate to layering water distribution effect in the water injection well in oil fields; Be interval quantity according to the water distribution of water injection well needs; One group of voltage-controlled injection well downhole flow regulator that can receive the ground pressure signal is respectively set the pressure signal coding of position and action; The program that receives and carry out these signals is set, the water injection pipe that the voltage-controlled injection well downhole flow regulator that possesses above-mentioned setting is housed is lowered in the water injection well, and make that each injection well downhole flow regulator is positioned at corresponding interval on it; With the water under high pressure delivered pressure source that the ground high-pressure pump is produced, through the valve on operating pressure source and the wellhead assembly, the voltage-controlled injection well downhole flow regulator on the interval of the needs adjustment water yield is sent and the corresponding pressure code signal of its action, make it to produce the variation of discharge area.
But there is following defective in this technology:
1, before implementing at the scene, this technology needs to suspend the ground water injecting pump, treat that the landing of pit shaft internal pressure system is near behind the liquid column hydrostatic pressure, can regulate and control construction, prolonged the engineering time to a certain extent.
2, this technology needs by ground installations such as high-pressure pumps when regulating and control construction at the scene, but does not mention that in manual this high-pressure pump is the corresponding ground water injecting pump that is equipped with of construction well or the cementing truck of the special allotment of construction.Suppose that high-pressure pump equipment is the corresponding ground water injecting pump that is equipped with of construction well, 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 the cementing truck of high-pressure pump equipment, then increased construction cost and working procedure undoubtedly for the special allotment of construction.
3, this technology adopts water under high pressure to have the risk of regulation and control failure as pressure source.In water injection well in oil fields; Differing greatly of different strata water absorbing capacity, the separate water injection well low for the stratum ability, that water absorbing capacity is strong is when water under high pressure acts in the pit shaft; Owing to this moment down-hole water nozzle passage and combination of zones; The stratum is equivalent to a current by pass, makes pit shaft can't play pressure, finally causes regulation and control difficulty even failure.
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.Being lowered to three voltage-controlled injection well downhole flow regulators with certain separate water injection well is example; The time of adopting this technological pressure code signal to send instruction for a voltage-controlled injection well downhole flow regulator grew up 40 minutes; Even then at interval not free in the middle of each pressure code signal, be the time that three voltage-controlled injection well downhole flow regulators send instruction also to reach 120 minutes.
Summary of the invention
The objective of the invention is to solve a difficult problem that exists in the above-mentioned prior art; A kind of method that realizes the layering water distribution with pressure pulse is provided; Through the program control generating means of well head pressure pulse, not termination of pumping, need not other construction operation equipment and do not use water under high pressure delivered pressure source.
The present invention realizes through following technical scheme:
A kind of method with pressure pulse realization layering water distribution, said method utilizes program control generator of well head pressure pulse and the separate layer water injection string of being furnished with intelligent injection well downhole flow regulator to realize the layering water distribution; Said method comprising the steps of:
(1) an intelligent injection well downhole flow regulator is equipped with at corresponding each water filling layer position place on the layering water distribution tubing string of down-hole, at the program control generator 4 of well head mounting shaft mouth pressure pulse; The program control generator 4 of said well head pressure pulse links to each other with computer 6 through communication cable 5;
(2) send command signal through 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; The program control instruction; Through the negative pressure pulse ripple of opening and close generation correspondence in the water injection well pit shaft of gauge tap gate valve 4-3, one group of negative pressure pulse ripple forms the pressure pulse code signal corresponding with said command signal simultaneously;
(3) said negative pressure pulse ripple is a carrier to inject water, passes to the intelligent injection well downhole flow regulator of down-hole; Said negative pressure pulse velocity of wave propagation is identical in the transmission speed of injecting water with sound wave;
(4) the pressure pulse hardware detecting circuit in the downhole intelligent injection well downhole flow regulator is decoded as executable instruction with the pressure pulse code signal that receives; The adjustable water nozzle of the control software control of downhole intelligent injection well downhole flow regulator changes the aperture size of water nozzle after carrying out corresponding instruction then, and then realizes the layering water distribution.
Instruction in the said step (2) is one group of binary number.
The mode that instruction takes place in the said step (2) is following:
(21) each binary number in the order execution command;
When (22) carrying out binary number " 1 ", 4 moments of the program control generator of well head pressure pulse are opened switch gate valve 4-3, close and keep after 1 second 30 seconds;
When (23) carrying out binary number " 0 ", the program control generator 4 of well head pressure pulse cuts out switch gate valve 4-3, keeps 30 seconds.
When said switch gate valve 4-3 was closed, the pressure in the pit shaft was near water injection pressure, and when switch gate valve 4-3 opened, the pressure in the pit shaft was lower than water injection pressure, and said negative pressure pulse ripple is by forming near water injection pressure and the waveform combination that is lower than water injection pressure.
The program control generator 4 of said 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 of said lubricator 4-1 terminates on the 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 links to each other with computer 6;
On the pipeline between said lubricator 4-1 and the switch gate valve 4-3, have pressure gauge connection 4-2, connect pressure meter at pressure gauge connection 4-2 place;
Said computer 6 is with stored program control system control motor transmission mechanism 4-5, the switching of motor transmission mechanism 4-5 gauge tap gate valve 4-3.
What said 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: but the present invention's wireless remote control is accomplished layering water distribution task, need not to carry out traditional pulling allotment, has practiced thrift labour hour and construction cost, is a kind of efficient, advanced, layering decreasing water distribution method that success rate is high.Simultaneously; Carried out improving significantly to the defective of prior art; Use the program control generator of well head pressure pulse to produce negative pressure pulse; Have not termination of pumping, need not other construction operation equipment auxiliary, do not use water under high pressure delivered pressure source, can in half an hour, accomplish the advantage of the layering water distribution effect of three layer positions, also further improved efficient, construction cost and the success rate of prior art.
Description of drawings
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 among the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
A kind of method with pressure pulse realization layering water distribution, said method utilize the program control generator 4 of well head pressure pulse to realize the layering water distribution with the separate layer water injection string of being furnished with intelligent injection well downhole flow regulator; Said method comprising the steps of:
(1) an intelligent injection well downhole flow regulator (ZP1 among Fig. 1, ZP2 and ZP3) is equipped with at corresponding each water filling layer position place on the layering water distribution tubing string of down-hole, at the program control generator 4 of well head mounting shaft mouth pressure pulse; The program control generator 4 of said well head pressure pulse links to each other with computer 6 through communication cable 5;
(2) send command signal through 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; The program control instruction; Through the negative pressure pulse ripple of opening and close generation correspondence in the water injection well pit shaft of gauge tap gate valve 4-3, one group of negative pressure pulse ripple forms the pressure pulse code signal corresponding with said command signal simultaneously;
(3) said negative pressure pulse ripple is a carrier to inject water, passes to the intelligent injection well downhole flow regulator of down-hole; Said negative pressure pulse velocity of wave propagation is identical in the transmission speed of injecting water with sound wave;
(4) the pressure pulse hardware detecting circuit in the downhole intelligent injection well downhole flow regulator is decoded as executable instruction with the pressure pulse code signal that receives; The adjustable water nozzle of the control software control of downhole intelligent injection well downhole flow regulator changes water nozzle aperture size after carrying out corresponding instruction then, and then realizes layering water distribution (being layering allotment water filling).
When said switch gate valve 4-3 was closed, the pressure in the pit shaft was near water injection pressure, and when switch gate valve 4-3 opened, the pressure in the pit shaft was lower than water injection pressure, and said negative pressure pulse ripple is by forming near water injection pressure and the waveform combination that is lower than water injection pressure.
Fig. 1 provides is the embodiment that the water injection well of three need layering water distributions (among Fig. 11,2,3) is arranged, and is less than three layers or also make more than three layers embodiment and to use the same method.
Provide a concrete operating process below:
For the intelligent injection well downhole flow regulator of forming by pressure sensor, control circuit, motor, adjustable water nozzle etc., suppose that the aperture size of intelligent injection well downhole flow regulator ZP1 that will position, Fig. 1 middle level 1 is corresponding is adjusted into standard-sized sheet, then can operate according to following steps:
At the program control generating means 4 of water injection well import mounting shaft mouth pressure;
Instruction software by computer 6 passes to the program control generating means 4 of well head pressure pulse with the code that standard-sized sheet instructs through communication cable 5, and the standard-sized sheet instruction code is 16 bits: 11,010,010 11001001.Wherein preceding 2 is synchronous code, and the 3rd to the 6th is address code, and back 8 is action code;
After the program control generator 4 of well head pressure pulse receives command signal, the program control instruction, the mode that instruction takes place is followed following rule and principle:
1) order is carried out the instruction of 16 bit bytes;
When 2) carrying out binary number " 1 ", 4 moments of the program control generator of well head pressure pulse are opened switch gate valve 4-3, close and keep after 1 second 30 seconds;
When 3) carrying out binary number " 0 ", the program control generator 4 of well head pressure pulse cuts out switch gate valve 4-3, keeps 30 seconds;
4) time of one group of 16 bit instruction of program control generator 4 execution of well head pressure pulse is 450 seconds, and the times of carrying out three groups of instructions are 1350 (22.5 minutes);
The structure of the program control generator 4 of said well head pressure pulse is 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 of said lubricator 4-1 terminates on the 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 links to each other with computer 6;
On the pipeline between said lubricator 4-1 and the switch gate valve 4-3, have pressure gauge connection 4-2, connect pressure meter at pressure gauge connection 4-2 place;
Said computer 6 is with stored program control system control motor transmission mechanism 4-5, the switching of motor transmission mechanism 4-5 gauge tap gate valve 4-3.
What said switch gate valve 4-3 adopted is Parallel gate valve Parallel slide valve.
The program control generator 4 of well head pressure pulse produces corresponding negative pressure pulse ripple in the water injection well pit shaft in program control generation instruction; Pressure pulse is a carrier to inject water; 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 of pressure pulse code signal decoding back being carried out the 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 be not limited only to the described method of the above-mentioned specific embodiment of the present invention; Therefore the mode of front description is just preferred, and does not have restrictive meaning.
Claims (7)
1. realize it is characterized in that the method for layering water distribution with pressure pulse for one kind: the separate layer water injection string that said method is utilized the program control generator of well head pressure pulse (4) and is furnished with intelligent injection well downhole flow regulator is realized the layering water distribution; Said method comprising the steps of:
(1) an intelligent injection well downhole flow regulator is equipped with at corresponding each water filling layer position place on the layering water distribution tubing string of down-hole, at the program control generator of well head mounting shaft mouth pressure pulse (4); The program control generator of said well head pressure pulse (4) links to each other with computer (6) through communication cable (5);
(2) send command signal through 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; The program control instruction; The opening and close and in the water injection well pit shaft, produce corresponding negative pressure pulse ripple of switch gate valve (4-3) through the program control generator of control well mouth pressure pulse (4) simultaneously, one group of negative pressure pulse ripple forms the pressure pulse code signal corresponding with said command signal;
(3) said negative pressure pulse ripple is a carrier to inject water, passes to the intelligent injection well downhole flow regulator of down-hole;
(4) the pressure pulse hardware detecting circuit in the downhole intelligent injection well downhole flow regulator is decoded as executable instruction with the pressure pulse code signal that receives; The adjustable water nozzle of the control software control of downhole intelligent injection well downhole flow regulator changes the aperture size of water nozzle after carrying out corresponding instruction then, and then realizes the layering water distribution.
2. the device at water injection well well head generation pressure pulse according to claim 1, it is characterized in that: the instruction in the said step (2) is one group of binary number.
3. according to claim 2 a described method with pressure pulse realization layering water distribution, it is characterized in that: the mode that instruction takes place in the said step (2) is following:
(21) each binary number in the order execution command;
(22) when carrying out binary number " 1 ", the program control generator of well head pressure pulse (4) moment is opened switch gate valve (4-3), closes and keeps after 1 second 30 seconds;
(23) when carrying out binary number " 0 ", the program control generator of well head pressure pulse (4) cuts out switch gate valve (4-3), keeps 30 seconds.
4. according to claim 1 or 3 described methods that realize the layering water distribution with pressure pulse; It is characterized in that: when said switch gate valve (4-3) is closed; Pressure in the pit shaft is near water injection pressure; When switch gate valve (4-3) when opening, the pressure in the pit shaft is lower than water injection pressure, and said negative pressure pulse ripple is by forming near water injection pressure and the waveform combination that is lower than water injection pressure.
5. the device at water injection well well head generation pressure pulse according to claim 1 is characterized in that: in said step (3), said negative pressure pulse velocity of wave propagation is identical in the transmission speed of injecting water with sound wave.
6. the method with pressure pulse realization layering water distribution according to claim 1, it is characterized in that: the program control generator of said 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 of said lubricator (4-1) terminates on the 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) links to each other with computer (6);
On the pipeline between said lubricator (4-1) and the switch gate valve (4-3), have pressure gauge connection (4-2), (4-2) locates to connect pressure meter at pressure gauge connection;
Said computer (6) is with stored program control system control motor transmission mechanism (4-5), the switching of motor transmission mechanism (4-5) gauge tap gate valve (4-3).
7. the device at water injection well well head generation pressure pulse according to claim 6, it is characterized in that: what said switch gate valve (4-3) adopted is Parallel gate valve Parallel slide valve.
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| CN104047581A (en) * | 2014-05-28 | 2014-09-17 | 苏州市职业大学 | Automatic oil extraction divider system based on sonar |
| CN104653157A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Multi-stage separate-layer water injection string and working method thereof |
| CN104747146A (en) * | 2015-02-15 | 2015-07-01 | 中国石油天然气股份有限公司 | Separate-zone water injection measuring and adjusting method and system for oil field water injection well |
| CN104832165A (en) * | 2015-05-06 | 2015-08-12 | 中国石油集团渤海钻探工程有限公司 | Wellhead sound wave emission device |
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| CN112211603A (en) * | 2019-07-12 | 2021-01-12 | 中国石油天然气股份有限公司 | Stratified water injection system and control method thereof |
| CN113389542A (en) * | 2021-06-08 | 2021-09-14 | 成都多贝石油工程技术有限公司 | Novel stratified water injection pulse generation system |
| 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 |
| CN114607327A (en) * | 2022-03-14 | 2022-06-10 | 河北中清永晟石油科技有限公司 | Underground water injection communication method and system |
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| CN104653157A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Multi-stage separate-layer water injection string and working method thereof |
| CN104653157B (en) * | 2013-11-19 | 2018-03-09 | 中国石油天然气股份有限公司 | Multi-stage separate-layer water injection string and working method thereof |
| CN104047581A (en) * | 2014-05-28 | 2014-09-17 | 苏州市职业大学 | Automatic oil extraction divider system based on sonar |
| CN105569622A (en) * | 2014-11-10 | 2016-05-11 | 中国石油化工股份有限公司 | Underground layering pressure-regulating water injection process pipe string |
| CN104747146A (en) * | 2015-02-15 | 2015-07-01 | 中国石油天然气股份有限公司 | Separate-zone water injection measuring and adjusting method and system for oil field water injection well |
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| CN106050201A (en) * | 2016-08-09 | 2016-10-26 | 中国海洋石油总公司 | Cableless layering water injection method capable of achieving downhole flow, pressure and temperature monitoring |
| CN109424357A (en) * | 2017-08-16 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of rotary valve pressure pulse generator |
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| CN107780905A (en) * | 2017-10-25 | 2018-03-09 | 中国石油天然气股份有限公司 | Pressure flow double-carrier underground and ground communication device |
| CN109372479A (en) * | 2017-11-07 | 2019-02-22 | 中国石油化工股份有限公司 | Water injection well wireless test and control separate injection tubing string |
| CN108121369A (en) * | 2017-12-20 | 2018-06-05 | 中国石油天然气股份有限公司 | Intelligent water injection remote control device and method |
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| CN113389542A (en) * | 2021-06-08 | 2021-09-14 | 成都多贝石油工程技术有限公司 | Novel stratified water injection pulse generation system |
| CN113389542B (en) * | 2021-06-08 | 2022-09-20 | 北京六合伟业科技股份有限公司 | Novel stratified water injection pulse generation system |
| 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 |
| CN114607327A (en) * | 2022-03-14 | 2022-06-10 | 河北中清永晟石油科技有限公司 | Underground water injection communication method and system |
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| CN102839954B (en) | 2015-10-07 |
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