CN101798912A - Device and method for regulating and controlling water content of production fluid of underground layering of oil field - Google Patents
Device and method for regulating and controlling water content of production fluid of underground layering of oil field Download PDFInfo
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- CN101798912A CN101798912A CN201010127470A CN201010127470A CN101798912A CN 101798912 A CN101798912 A CN 101798912A CN 201010127470 A CN201010127470 A CN 201010127470A CN 201010127470 A CN201010127470 A CN 201010127470A CN 101798912 A CN101798912 A CN 101798912A
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Abstract
The invention discloses a device for regulating and controlling the water content of the production fluid of an underground layering of an oil field, which comprises a main control assembly, a slide bushing switch and a water content tester, wherein the slide bushing switch is arranged in the main control assembly, and the water content tester is connected with the main control assembly and is used for testing the water content of an oil-water mixture; the main control assembly is used for controlling the opening and the closing of the slide bushing switch according to a test result of the water content; when the condition that the water content is higher than a set value is judged, the slide bushing switch is closed so as to prohibit the pass of the oil-water mixture; and when the condition that the water content is lower than the set value is judged, the slide bushing switch is opened so as to permit the pass of the oil-water mixture. By connecting the device provided by the invention in a layered oil recovery pipe column in series and delivering the device to an underground oil layer, the water content tester can automatically detect the water content of the oil-water mixture. According to the actually detected water content, the slide bushing switch is opened or closed so as to open or close a fluid inlet passage, so that the dynamic regulation and control of the water content of the production fluid of the underground layering of the oil field is realized.
Description
Technical field
The present invention relates to petroleum production engineering technology control technique field, oil field, more particularly, relate to a kind of water content of production fluid of underground layering of oil field regulation device and method.
Background technology
Continuous growth along with science and technology, domestic Oilfield developing technology enters waterflood stage already, described waterflooding oil field, promptly utilize the crude oil of each reservoir of high pressure injection water-driven oil field in the water injection well to flow into oil well, to come in the oil-water mixture pumping again, after the sedimentation of surface settlement jar, enter and obtain crude oil after apparatus for electrodewatering dewaters.
Because long-term injecting water; the physical parameter of oilfield reservoir (degree of porosity, saturation ratio and permeability) can change; the acid fracturing construction of in addition carrying out for the increase production capacity in the oil well all can cause oilfield reservoir and country rock fracture development; producing injection water individual layer through regular meeting advances by leaps and bounds; phenomenons such as interlayer water breakthrough groove; cause a large amount of water outlets of some series of strata in the oil well, even water logging stops production.
For addressing the above problem, various measures were taked at the oil scene, and as observing the moisture variation of produced liquid in oil well at any time, the pressure and the water yield of each water filling layer in Artificial Control and the adjustment water injection well are expected the moisture content in the oil well liquid-producing is lowered then.But, since a bite well be simultaneously around many mouthfuls of flushings, and each oil well production state has nothing in common with each other, and adopts the adjustment cycle of Artificial Control method long, take effect slowly even produce little effect.
Because the oil well of domestic separate zone production is to utilize packer separated from one another each oil reservoir of down-hole, so, also there is a kind of method of utilizing production mandrel equipped in each oil reservoir to control the flow in the inflow pit shaft in the prior art.When finding the moisture rising of this well production fluid at the ground well head, then join produce oil in the production mandrel and chew (comprise extremely and chewing) bore and judge main water exit by successively changing, this layer is changed extremely chewed then, make height contain aquaculture solution and can't flow into pit shaft.
But in said method, to join that produce oil chews be the operation of artificial mechanism formula fully owing to change, and needs the repeated multiple times operation, like this, just caused the construction cost height, accounts for the long and low problem of economic timeliness of well cycle.Especially also there is a major issue, promptly changes each layer oil and chew bore and just separate layer fluid production rate is played certain corrective action, can't change the stratum and flow into production fluid moisture content in the pit shaft.
In sum, press for a kind of water content of production fluid of underground layering regulation device now, replace domestic traditional water and oil control technology at present, realize dynamic regulation water content of production fluid of underground layering of oil field.
Summary of the invention
In view of this, the invention provides a kind of water content of production fluid of underground layering of oil field regulation device and method, to realize purpose to the dynamic regulation of water content of production fluid of underground layering of oil field.
Described water content of production fluid of underground layering of oil field regulation device comprises: the master control assembly, be arranged on the sliding sleeve switch in the described master control assembly, and the detector for water content rate that links to each other with described master control assembly, wherein:
Described detector for water content rate is used for the moisture content of test oil water mixed liquid;
Described master control assembly, be used for controlling the open and close of described sliding sleeve switch according to the test result of moisture content, when judging that moisture content is higher than setting value, close described sliding sleeve switch and then stop described oil-water mixture to pass through, when judging that moisture content is lower than setting value, open described sliding sleeve switch and then allow described oil-water mixture to pass through.
Preferably, also comprise pressure sensor, be used to receive pressure pulse and be transmitted in the master control assembly that the master control assembly is revised according to described pressure pulse and generated new setting value.
Preferably, described master control assembly comprises:
Control device is used to receive the test result of oil-water mixture moisture content, with itself and the setting value back sending controling instruction of comparing;
Drive unit is used for driving the sliding sleeve switch open and close according to the control instruction of control device.
Preferably, described drive unit comprises:
Top connection, lower contact and the main casing that is tightly connected with it, described top connection inside has the feed liquor duct, and its underpart is installed with central tube, and described main casing is provided with 4 outer tube inlet openings;
The plunger, ball screw, thrust bearing, shaft coupling and the reducing motor that be installed in described central tube inside, link to each other successively, described plunger can move along described central tube axial direction.
Preferably, described control device comprises:
Input block is used for input and sets value in SCM system;
SCM system is used to receive the test result of oil-water mixture moisture content, with itself and the setting value back sending controling instruction of comparing.
Preferably, described sliding sleeve switch comprises:
Be fixed on the described plunger, can prop up wall with the moving sliding sleeve of described plunger;
Prop up wall by described sliding sleeve and be connected sleeve body on the described plunger, described sleeve body be provided with 4 with the isometrical individual sliding sleeve inlet opening of outer tube inlet opening.
Preferably, described top connection and lower contact all are set to the tubing round thread structure.
Preferably, described detector for water content rate comprises: the instrument storehouse of going up seal head, lower seal head and being threaded with described upper and lower seal head, wherein:
Be placed with the low energy of radioactivity, crystal, photomultiplier, high tension transformer, electronic circuit and battery in the described instrument storehouse successively, and, all link to each other between described crystal, photomultiplier, high tension transformer, electronic circuit and the battery by connector;
Described lower seal head is provided with the line sealing-plug.
Described water content of production fluid of underground layering of oil field regulate and control method comprises:
Moisture content in the test oil water mixed liquid;
Contrast the moisture content and the setting value of described test, when judging that moisture content is higher than setting value, close described sliding sleeve switch and then stop described oil-water mixture to pass through,, open described sliding sleeve switch and then allow described oil-water mixture to pass through when judging that moisture content is lower than setting value.
Preferably, when needs are revised setting value, also comprise: receive pressure pulse, generate new setting value according to described pressure pulse.
From above-mentioned technical scheme as can be seen, by with device serial connection provided by the invention in separate-layer production string down to the down-hole oil reservoir, detector for water content rate can detect the moisture content of oil-water mixture automatically.When finding that moisture content is higher than setting value, just automatically shut down feed pathway by the control sliding sleeve switch, make the oil-water mixture in the stratum can't flow in the pit shaft; Otherwise, then open feed pathway by the control sliding sleeve switch, realized dynamic regulation to water content of production fluid of underground layering of oil field.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic diagram that is electrically connected of the disclosed a kind of water content of production fluid of underground layering of oil field regulation device of the embodiment of the invention;
Fig. 2 is the schematic diagram of the disclosed a kind of master control assembly of the embodiment of the invention;
Fig. 3 is the front view of the disclosed a kind of water content of production fluid of underground layering of oil field regulation device of the embodiment of the invention;
Fig. 4 is the A-A line sectional view of Fig. 3;
Fig. 5 is the front view of the disclosed a kind of detector for water content rate of the embodiment of the invention;
Fig. 6 is the flow chart of the disclosed a kind of water content of production fluid of underground layering of oil field regulate and control method of the embodiment of the invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention discloses a kind of water content of production fluid of underground layering of oil field regulation device, to realize purpose to the dynamic regulation of water content of production fluid of underground layering of oil field.
Referring to Fig. 1, described water content of production fluid of underground layering of oil field regulation device comprises: master control assembly 102, be arranged on the sliding sleeve switch 103 in the master control assembly 102, and the detector for water content rate 101 that links to each other with master control assembly 102, wherein:
Detector for water content rate 101 is used for the moisture content of test oil water mixed liquid;
When using this device, earlier this device is connected in the well recovery tubing string, concrete, owing to utilize a plurality of packers that several oil reservoirs of down-hole are separated into separately independently individual layer in this tubing string, and this device of all connecting in each individual layer.Oil-water mixture A in each individual layer flow in the pit shaft, and the moisture content of 101 pairs of mixed liquor A of detector for water content rate is tested, and test data is sent to master control assembly 102.Master control assembly 102 judges whether to make sliding sleeve switch 103 actions.When the actual measurement moisture content is higher than setting value, then allow sliding sleeve switch 103 close, the mixed liquor A in the pit shaft can't flow in the flow string; When moisture content is lower than setting value, then allow sliding sleeve switch 103 open, the mixed liquor A in the pit shaft flow into becomes produced liquid in oil well by defeated in the pumping in the flow string.
Equally with reference to Fig. 1, during the moisture threshold value set in needs are readjusted master control assembly 102, described water content of production fluid of underground layering of oil field regulation device also comprises pressure sensor 104, for the space of economy system, it can be positioned over master control assembly 102 inside.Utilize the ground pump truck pulse B that exerts pressure, after pressure pulse B is received by pressure sensor 104, send into and instruct decoding in the master control assembly 102, form new moisture threshold value at last.
Concrete, as shown in Figure 2, master control assembly 102 comprises: control device 211 and drive unit 212, and wherein, control device 211 is used to receive the test result of oil-water mixture moisture content, with itself and the setting value sending controling instruction afterwards of comparing; Drive unit 212 is used for driving sliding sleeve switch 103 open and close according to the control instruction of control device.
And control device 211 comprises: input block is used for input and sets value in SCM system; SCM system is used to receive the test result of oil-water mixture moisture content, with itself and the setting value back sending controling instruction of comparing.
Below by an embodiment concrete structure of water content of production fluid of underground layering of oil field regulation device is described.
Structure as shown in Figure 3, drive unit 212 comprises: top connection 21, lower contact 22, with its main casing that is tightly connected respectively 23 and be arranged at central tube 24 in the main casing 23, and top connection 21 adopts engage thread to be tightened to one with central tube 24.
There is circular arc liquid pass hole road 1 top connection 21 inside, and as shown in Figure 4, each layer of well recovery tubing string production fluid can flow through in main casing 23 and central tube 24 formed annular spaces and circular arc liquid pass hole road 1.And the ground pump truck pulse of exerting pressure also acts on the pressure sensor 104 by this runner.
Central tube 24 inside are equipped with plunger 29, are connected with ball screw 34 on the plunger 29, and the ball screw afterbody is fixed with thrust bearing 35, and thrust bearing 35 is connected with reducing motor 37 line shafts by shaft coupling 36.Concrete, O shape cushion rubber is being worn in embedding on the plunger 29, and the external high pressure fluid can not be invaded in the annular seal space of central tube 24.The air compression chamber of sealing is left on the top of plunger 29, thereby makes plunger 29 balance that keep-ups pressure in the axial direction, and reducing motor 37 can be worked under the axial compression equilibrium conditions.
The course of work of drive unit 212 is: reducing motor 37 running, its line shaft drive shaft coupling 36 actions, act on ball screw 34 by thrust bearing 35, ball screw 34 rotations promote plungers 29 central tube 24 axially on make upper and lower translation.
The controlled device 211 of the action of drive unit 212 is regulated and control, and specifically regulates and control the moving direction of plunger 29.Control device 211 comprises: SCM system 25, and for SCM system provides the battery 26 and the socket communication 27 of power supply, wherein, battery 26 links to each other with SCM system 25 by connector 135, and socket communication 27 is an input block.
For the ease of input block input data, central tube 24 is placed the control device end and is the opening setting, sealing tail cap 28 is installed, to realize closure.
Before this device is gone into the well use, open main casing 23, screw off sealing tail cap 28.Socket communication 27 is used communication cable and computer interconnection.Utilize the artificial moisture content initial threshold that is provided with of computer input to SCM system 25, simultaneously sliding sleeve switch 103 is migrated to fastening position.After the off line, recovery installs sealing tail cap 28 and main casing 23 again.
Because being positioned over, this device utilize a plurality of packers that several oil reservoirs of down-hole are separated into separately independently in the individual layer in the well recovery tubing string, in the artificial moisture content initial threshold that is provided with of input, also the layer position code clerk of device to be inputed to SCM system 25.
In the course of work of this device, SCM system 25 is the moisture content of the oil-water mixture of interior each individual layer generation of flow string of reception detector for water content rate 101 tests constantly, with itself and setting value, be that the moisture content initial threshold is compared, send control instruction according to comparison result, accessory drive 212 actions.
Concrete, on sleeve body 31, have four sliding sleeve inlet openings 32, also have four outer tube inlet openings 30 isometrical on the main casing 23 with it.
Because sleeve body 31 is arranged on the plunger 29 by sliding sleeve support arm 33, plunger 29 axially moves up and down and then drives sleeve body 31 along central tube 24 and moves up and down, when sleeve body 31 moved upward to a certain position, the sliding sleeve inlet opening 32 on it can overlap with outer tube inlet opening 30.Can make this moment the oil-water mixture that each individual layer produces in the flow string flow into main casing 23 inside.Otherwise when sleeve body 31 moved downward a certain position, the sliding sleeve inlet opening 32 on it staggered fully with outer tube inlet opening 30, and the oil-water mixture that interior each individual layer of flow string this moment produces can't flow into main casing 23 inside.
Because this device serial connection is in flow string, in order to improve seal, satisfy oil standardization requirement, so, top connection 21 and lower contact 22 all are set to the tubing round thread structure, top connection 21 and lower contact 22 adopted the tubing round thread mode to spin with last lower packet and is integral, and this kind structure has self sealing action after also making and screwing with last lower packet.
In conjunction with Fig. 3 and Fig. 5, generally speaking, detector for water content rate 101 is installed in the groove of main casing 23 outsides, utilizing upward respectively, fixture block 1011, following fixture block 1012 are fixed on the main casing 23, its concrete structure comprises as shown in Figure 3: the instrument storehouse 13 of going up seal head 11, lower seal head 12 and being threaded with last seal head 11, lower seal head 12, and concrete, for the booster seal, last seal head 11, lower seal head 12 respectively with the junction in instrument storehouse 13 also embedding wear O shape cushion rubber; Wherein:
Also offer one on the instrument storehouse 13 of detector for water content rate 101 and connect inlet opening 132, its aperture is identical with the outer tube inlet opening 30 of main casing 23, and its installation site and outer tube inlet opening 30 coincide mutually.
Detector for water content rate 101 is arranged in the groove of main casing 23 outsides, generally be in the oil reservoir, be full of the oil-water mixture of different proportion in the oil reservoir, described oil-water mixture constantly flows into and connects inlet opening 132, at this moment, and the low energy 131 radiation photon streams of radiation, receive by crystal 133 after entering described oil-water mixture, be converted to electron stream through photomultiplier 134, electronic circuit 137 is handled the back with it and is formed the moisture content signal of telecommunication, is finally transmitted by line sealing-plug 121.
Connect sealing-plug 121 and be connected with master control assembly 102 by cable, specifically link to each other with SCM system 25, SCM system 25 receives the moisture content signal of telecommunication, and itself and setting value are compared, and carries out subsequent operation according to comparison result.
In said process, battery 138 is provided with high tension transformer 136 for the work of each parts provides power supply, is used for the voltage rising of battery 138 is formed the operating voltage of photomultiplier 134.
Need to prove that the detector for water content rate 101 in the embodiment of the invention adopts unitary structure, be convenient to the assembling and the adjustment calibrating of instrument.And detector for water content rate 101 is developed according to the photoelectric effect in the atomistics.Have broad quantum, precision height, response speed and be subjected to unique technique advantages such as the fluid media (medium) admixture influences soon and not.According to photoelectric effect as can be known, when the photon that sends when radioactive substance passed medium, the intensity of its ray was index law and weakens, because different medium is to the absorption coefficient difference of ray, pass the oil-water mixture of different volumes ratio when ray after, the transmitted intensity and the oil-water ratio that receive are proportional.The low energy of detector for water content rate 101 employed radioactivity among the present invention is cadmium 109 (Cd109).
The embodiment of the invention also provides a kind of water content of production fluid of underground layering of oil field regulate and control method, as shown in Figure 6, comprises step:
Moisture content in S1, the test oil water mixed liquid;
The production fluid moisture content of detector for water content rate 101 automatic continuous measurements layer position of living in, and measured value delivered to SCM system 25.
S2, with described moisture content and setting value comparison, when judging that moisture content is higher than setting value, execution in step S3, close sliding sleeve switch 103 and then stop described oil-water mixture to pass through; When judging that moisture content is lower than setting value, execution in step S4, open sliding sleeve switch 103 and then allow described oil-water mixture to pass through.
And whether SCM system 25 automatic inquiries revise setting value.Though when the surface pump car does not apply voltage-controlled pulse or applies pulse but a layer position code clerk when not conforming to this bed device code clerk to pit shaft, former setting value is constant; Otherwise, when the layer position code clerk in the pressure pulse conforms to this bed device code clerk, then the moisture content threshold value sign indicating number that receives to be decoded, SCM system 25 reaches former setting value of generation with decoded new threshold value.
Concrete, the pump truck pressurization produces pressure pulse, and forward part is represented layer position code clerk, is used to select the downhole hardware of which layer, the new moisture threshold value that the rear section representative is provided with.
In sum, the water content of production fluid of underground layering of oil field regulation device that the embodiment of the invention provides, in layer position, down-hole, can finish the oil-water mixture moisture content automatically and detect, and open or close down-hole individual layer production fluid passage in view of the above, realize the dynamic regulation of water content of production fluid of underground layering.
Each embodiment adopts the mode of going forward one by one to describe in this manual, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a water content of production fluid of underground layering of oil field regulation device is characterized in that, comprising: the master control assembly, be arranged on the sliding sleeve switch in the described master control assembly, and the detector for water content rate that links to each other with described master control assembly, wherein:
Described detector for water content rate is used for the moisture content of test oil water mixed liquid;
Described master control assembly, be used for controlling the open and close of described sliding sleeve switch according to the test result of moisture content, when judging that moisture content is higher than setting value, close described sliding sleeve switch and then stop described oil-water mixture to pass through, when judging that moisture content is lower than setting value, open described sliding sleeve switch and then allow described oil-water mixture to pass through.
2. device according to claim 1 is characterized in that, also comprises pressure sensor, is used to receive pressure pulse and is transmitted in the master control assembly, and the master control assembly is revised according to described pressure pulse and generated new setting value.
3. device according to claim 1 and 2 is characterized in that, described master control assembly comprises:
Control device is used to receive the test result of oil-water mixture moisture content, with itself and the setting value back sending controling instruction of comparing;
Drive unit is used for driving the sliding sleeve switch open and close according to the control instruction of control device.
4. device according to claim 3 is characterized in that, described drive unit comprises:
Top connection, lower contact and the main casing that is tightly connected with it, described top connection inside has the feed liquor duct, and its underpart is installed with central tube, and described main casing is provided with 4 outer tube inlet openings;
The plunger, ball screw, thrust bearing, shaft coupling and the reducing motor that be installed in described central tube inside, link to each other successively, described plunger can move along described central tube axial direction.
5. device according to claim 3 is characterized in that, described control device comprises:
Input block is used for input and sets value in SCM system;
SCM system is used to receive the test result of oil-water mixture moisture content, with itself and the setting value back sending controling instruction of comparing.
6. device according to claim 4 is characterized in that, described sliding sleeve switch comprises:
Be fixed on the described plunger, can prop up wall with the moving sliding sleeve of described plunger;
Prop up wall by described sliding sleeve and be connected sleeve body on the described plunger, described sleeve body be provided with 4 with the isometrical individual sliding sleeve inlet opening of outer tube inlet opening.
7. device according to claim 3 is characterized in that described top connection and lower contact all are set to the tubing round thread structure.
8. device according to claim 1 and 2 is characterized in that, described detector for water content rate comprises: the instrument storehouse of going up seal head, lower seal head and being threaded with described upper and lower seal head, wherein:
Be placed with the low energy of radioactivity, crystal, photomultiplier, high tension transformer, electronic circuit and battery in the described instrument storehouse successively, and, all link to each other between described crystal, photomultiplier, high tension transformer, electronic circuit and the battery by connector;
Described lower seal head is provided with the line sealing-plug.
9. a water content of production fluid of underground layering of oil field regulate and control method is characterized in that, comprising:
Moisture content in the test oil water mixed liquid;
Contrast the moisture content and the setting value of described test, when judging that moisture content is higher than setting value, close described sliding sleeve switch and then stop described oil-water mixture to pass through,, open described sliding sleeve switch and then allow described oil-water mixture to pass through when judging that moisture content is lower than setting value.
10. method according to claim 9 is characterized in that, when needs are revised setting value, also comprises: receive pressure pulse, generate new setting value according to described pressure pulse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101274706A CN101798912B (en) | 2010-03-19 | 2010-03-19 | Device and method for regulating and controlling water content of production fluid of underground layering of oil field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101274706A CN101798912B (en) | 2010-03-19 | 2010-03-19 | Device and method for regulating and controlling water content of production fluid of underground layering of oil field |
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| CN101798912A true CN101798912A (en) | 2010-08-11 |
| CN101798912B CN101798912B (en) | 2013-11-27 |
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| CN2010101274706A Expired - Fee Related CN101798912B (en) | 2010-03-19 | 2010-03-19 | Device and method for regulating and controlling water content of production fluid of underground layering of oil field |
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| CN102418500A (en) * | 2011-12-19 | 2012-04-18 | 中国石油天然气股份有限公司 | Direct-control continuous quantitative layered production allocation tubing string |
| CN106437576A (en) * | 2015-08-13 | 2017-02-22 | 中国石油化工股份有限公司 | Electric bypass valve |
| CN106661931A (en) * | 2014-08-08 | 2017-05-10 | 韦尔泰克有限公司 | Downhole valve system |
| GB2566953A (en) * | 2017-09-27 | 2019-04-03 | Swellfix Uk Ltd | Method and apparatus for controlling downhole water production |
| CN113202465A (en) * | 2021-06-08 | 2021-08-03 | 长春市斯普瑞新技术有限责任公司 | Sliding sleeve closed type underground sampler |
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| CN113202465A (en) * | 2021-06-08 | 2021-08-03 | 长春市斯普瑞新技术有限责任公司 | Sliding sleeve closed type underground sampler |
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| Publication number | Publication date |
|---|---|
| CN101798912B (en) | 2013-11-27 |
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