CN204252986U - Manifold - Google Patents
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- CN204252986U CN204252986U CN201420675739.8U CN201420675739U CN204252986U CN 204252986 U CN204252986 U CN 204252986U CN 201420675739 U CN201420675739 U CN 201420675739U CN 204252986 U CN204252986 U CN 204252986U
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- connectivity points
- trunk path
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- fluid injection
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Abstract
The utility model provides a kind of manifold.This manifold is used for pressure break oil reservoir to be communicated with steam injection well and producing well, comprise: trunk path, trunk channel setting has the first connectivity points, second connectivity points of fluid injection connectivity points and the corresponding steam injection well of difference and producing well, and fluid injection connectivity points is arranged between the first connectivity points and the second connectivity points; First bypass line, the first end of the first bypass line is communicated with the first connectivity points, and the second end of the first bypass line is connected with the first pipe in steam injection well; Second bypass line, the first end of the second bypass line is communicated with the second connectivity points, and the second end of the second bypass line is connected with the second pipe in producing well; And at least one topping-up pump, the liquid injection port of topping-up pump is communicated to fluid injection connectivity points.Application the technical solution of the utility model, greatly can shorten the working time that prior art utilizes vapor communication oil reservoir, can save a large amount of steam.
Description
Technical field
The utility model relates to technical field of petroleum extraction, in particular to a kind of manifold.
Background technology
Steam assisted gravity drainage techniques (Steam Assisted Gravity Drainage, english abbreviation is SAGD) be one for developing the cutting edge technology of super-viscous oil.The mechanism of its application is: in the steam injection well of abandoned wells, inject steam, steam forms vapor chamber in the earth formation at upwards onlap, vapor chamber is upwards and to surrounding sideways expansion, make the crude oil generation interchange of heat in steam and oil reservoir, liquefaction crude oil after heating and steam heat-exchanging, and cooled condensed water with liquefaction crude oil under gravity earial drainage to producing well (i.e. producing well, steam injection well and producing well form distinctive parallel water horizontal well technology in the SAGD oil recovery technique) output (being the crude oil of exploitation) being afterwards arranged in face, steam injection down-hole.
SAGD oil recovery technique is main in two stages: cyclic preheat stage and oil pumping production phase.Cyclic preheat stage and staff inject steam in steam injection well and producing well, in this stage, vapor chamber is formed in oil well, and be communicated with steam injection well and producing well, and staff applies the time that prior art makes steam injection well be communicated with general needs with producing well is the shortest 3 wheat harvesting periods, the longlyest closely then need 1 year.The oil pumping production phase is namely after steam injection well is communicated with producing well, staff's lower pump in producing well carries out the operation of producing of pumping, and staff continues to inject steam in steam injection well, to ensure that vapor chamber upwards and to surrounding side is constantly expanded, thus be continuously that producing well feed flow is with output crude oil.
At present, the dual tubing well technology for washing well technology that certain Oilfield Company uses, is mainly applied to dual tubing well and carries out circulation well cleanup by manifold.
Prior art is pressurizeed to flushing fluid by pump truck, and then flushing fluid pumps in oil well by manifold from the long tube of dual tubing well by pump truck, and flushing fluid returns drainage producing well by short tube after well-flushing.Staff controls pressure and the flow of flushing fluid by pump truck, can only carry out general well-flushing operation to oil well.Effect for well-flushing operation judges, whether the flushing fluid that staff can only rely on naked-eye observation to return discharge from short tube totally can judge whether well-flushing operation completes.
If the manifold of dual tubing well technology for washing well technology to be directly applied to carrying out minute-pressure to oil reservoir and split oil reservoir connected oil wells technology in SAGD oil recovery technique, some problem following so will be there is:
Minute-pressure carried out to oil reservoir split oil reservoir connected oil wells technology certain stage in fluid injection (hot water) 1, in SAGD oil recovery technique, require two large discharge pumps simultaneously to a single tube fluid injection (hot water), but the fluid injection flow process of the manifold of dual tubing well technology for washing well technology cannot meet the requirement that the fluid injection flow process of oil reservoir connected oil wells technology is split in SAGD minute-pressure;
2, the fluid injection while that the manifold of dual tubing well technology for washing well technology not possessing two-tube (hot water) and two-tube while discharge opeing technical functionality, SAGD minute-pressure cannot be met and split the requirement of oil reservoir connected oil wells technology to the fluid injection flow process of manifold;
The outer discharge pipe of 3, the manifold of dual tubing well technology for washing well technology does not possess flow regulating function, general well-flushing operation can only be carried out, and staff can only be relied on to carry out naked-eye observation return the flushing fluid of discharging oil well and whether totally judge working effect.
Utility model content
The utility model aims to provide a kind of manifold, to solve the problem cannot carrying out fluid injection in prior art in SAGD oil recovery process to manifold and oil well simultaneously.
To achieve these goals, according to an aspect of the present utility model, provide a kind of manifold, for pressure break oil reservoir to be communicated with steam injection well and producing well, comprise: trunk path, trunk channel setting has the first connectivity points, second connectivity points of fluid injection connectivity points and the corresponding steam injection well of difference and producing well, and fluid injection connectivity points is arranged between the first connectivity points and the second connectivity points; First bypass line, the first end of the first bypass line is communicated with the first connectivity points, and the second end of the first bypass line is connected with the first pipe in steam injection well; Second bypass line, the first end of the second bypass line is communicated with the second connectivity points, and the second end of the second bypass line is connected with the second pipe in producing well; And at least one topping-up pump, the liquid mouth of fluid injection infusion is communicated to fluid injection connectivity points.
Further, trunk path also has and is successively set on third connecting point between the first connectivity points and the second connectivity points and the 4th connectivity points; Manifold also comprises the 3rd bypass line and the 4th bypass line, the first end of the 3rd bypass line is communicated with the third connecting point on trunk path, second end of the 3rd bypass line is connected with the 3rd pipe in steam injection well, the first end of the 4th bypass line is communicated with the 4th connectivity points on trunk path, and the second end of the 4th bypass line is connected with the 4th pipe in producing well.
Further, fluid injection connectivity points comprises steam injection well fluid injection point and producing well fluid injection point, steam injection well fluid injection point is arranged on the trunk path between the first connectivity points and third connecting point, and producing well fluid injection point is arranged on the trunk path between the 4th connectivity points and the second connectivity points; Topping-up pump comprises the first topping-up pump and the second topping-up pump, and the liquid injection port of the first topping-up pump is communicated with steam injection well fluid injection point, and the liquid injection port of the second topping-up pump is communicated with producing well fluid injection point.
Further, steam injection well fluid injection point comprises the first steam injection well fluid injection point and the second steam injection well fluid injection point that set gradually, and producing well fluid injection point comprises the first producing well fluid injection point and the second producing well fluid injection point that set gradually; Topping-up pump also comprises the 3rd topping-up pump and the 4th topping-up pump, the liquid injection port of the first topping-up pump is communicated with the first steam injection well fluid injection point, 3rd topping-up pump is communicated with the second steam injection well fluid injection point, and the second topping-up pump is communicated with the first producing well fluid injection point, and the 4th topping-up pump is communicated with the second producing well fluid injection point.
Further, manifold is arranged outside also comprising first outside tank, second outer row's tank and the 3rd and is arranged tank, and first outer row's tank is communicated with the first end at trunk path, and second outer row's tank is communicated with the second end at trunk path; 3rd outer row's tank is communicated with outer row's connectivity points of trunk path, and outer row's connectivity points is arranged between the second connectivity points and third connecting point.
Further, trunk path also comprises the first control valve, second control valve, 3rd control valve, 4th control valve, 5th control valve, 6th control valve, 7th control valve and the 8th control valve, first control valve is arranged on the trunk path between the first connectivity points and the first steam injection well fluid injection point, second control valve is arranged on the trunk path between the first steam injection well fluid injection point and the second steam injection well fluid injection point, 3rd control valve is arranged on the trunk path between the second steam injection well fluid injection point and third connecting point, 4th control valve is arranged on the trunk path between third connecting point and outer row's connectivity points, 5th control valve is arranged on the trunk path between outer row's connectivity points and the 4th connectivity points, 6th control valve is arranged on the trunk path between the 4th connectivity points and the first producing well fluid injection point, 7th control valve is arranged on the trunk path between the first producing well fluid injection point and the second producing well fluid injection point, 8th control valve is arranged on the trunk path between the second producing well fluid injection point and the second connectivity points.
Further, the first end of trunk path is provided with the first diffluence pass and the second diffluence pass, second end of trunk path is provided with the 3rd diffluence pass and the 4th diffluence pass, first outer row's tank is communicated with the first diffluence pass, second diffluence pass is for being communicated with the first tank car, second outer row's tank is communicated with the 3rd diffluence pass, and the 4th diffluence pass is for being communicated with the second tank car.
Further, manifold also comprises first-class gauge, second gauge, the 3rd flow meter and the 4th flow meter, first-class gauge is arranged on the first bypass line, second gauge is arranged on the second bypass line, 3rd flow meter is arranged on the 3rd bypass line, and the 4th flow meter is arranged on the 4th bypass line.
Further, manifold also comprises the 5th flow meter, the 6th flow meter, the 7th flow meter and the 8th flow meter, 5th flow meter is arranged on the trunk path between the first end of trunk path and the first connectivity points, 6th flow meter is arranged on the trunk path between third connecting point and outer row's connectivity points, 7th flow meter is arranged on the trunk path between outer row's connectivity points and the 4th connectivity points, and the 8th flow meter is arranged on the trunk path between the second connectivity points and the second end of trunk path.
Further, manifold also comprises first flow control valve, second adjustable valve, the 3rd flow control valve and the 4th flow control valve, first flow control valve is arranged on the trunk path between the first end of trunk path and the 5th flow meter, second adjustable valve is arranged on the trunk path between the 6th flow meter and outer row's connectivity points, 3rd flow control valve is arranged on the trunk path between outer row's connectivity points and the 7th flow meter, and the 4th flow control valve is arranged on the trunk path between the 8th flow meter and the second end of trunk path.
Further, manifold also comprises the first pressure gauge, the second pressure gauge, the 3rd pressure gauge and the 4th pressure gauge, first pressure gauge is arranged on the first bypass line, second pressure gauge is arranged on the 3rd bypass line, 3rd pressure gauge is arranged on the 4th bypass line, and the 4th pressure gauge is arranged on the second bypass line.
According to another aspect of the present utility model, provide a kind of pressure break oil reservoir connected oil wells technique, comprise the following steps:
Step S1: carry out fracturing work to the oil-well strata of adjacent same layer position, measures fracture pressure P1, to determine the force value of the fracture pressure P1 of oil-well strata;
Step S2: apply aforesaid manifold and simultaneously inject the hot water that is in the first preset pressure scope P2 to extrude oil reservoir to steam injection well and producing well in the first predetermined amount of time T1, wherein, P2 < P1;
Step S3: apply manifold and inject the hot water that is in the second predetermined pressure range P3 to extrude oil reservoir to steam injection well separately in the second predetermined amount of time T2, wherein, in the second predetermined amount of time T2, second predetermined pressure P3 rises gradually, keep P3 < P1 before predetermined point of time B in the second predetermined amount of time T2, after predetermined point of time B, reach P3 > P1.
Further, in step s 2, when P2 is close to P1, stop injecting hot water to keep the second preset pressure P2 < P1 by arranging the liquid in oil well outward or close topping-up pump.
Exploit in super-viscous oil technology at SAGD, the cycle in the cyclic preheat stage of prior art is oversize, and staff injects vapor recycle preheating 3-12 months in oil well, and cost is too high.Therefore staff applies a kind of manifold for SAGD minute-pressure rip current journey, in early stage in cyclic preheat stage, first hot water is used to carry out micro-fracturing operation to the oil reservoir between steam injection well and producing well, namely the technical solution of the utility model is applied, hot water is extruded the oil reservoir between steam injection well and producing well by manifold of the present utility model by staff, make oil reservoir between steam injection well and producing well by pressure break equably, thus in oil reservoir, form more uniform crack, hot water is made to be filled in crack, then reach and make between steam injection well and producing well by object that layer crack is interconnected.Application the technical solution of the utility model carries out micro-fracturing operation to oil reservoir, the general time only needing 7 to 10 days.Staff starts to carry out cyclic preheat to the oil reservoir in oil well more afterwards, namely high-temperature steam is injected, this generally needs the time of about 1 month to form vapor chamber and reaches the object of vapor communication of steam injection well and producing well, then can proceed to the oil pumping production phase.
Application the technical solution of the utility model, manifold can inject hot water to steam injection well and producing well simultaneously carry out micro-fracturing operation to oil reservoir, realize hot water early stage to be communicated with, the speed be communicated with by pressure break at cyclic preheat stage oil reservoir is accelerated, like this can effectively by about the time shorten to 1 of 3 wheat harvesting periods required for the cyclic preheat stage of prior art month, this substantially reduces the working time that prior art utilizes vapor communication oil reservoir, at least can save the use amount of the steam of more than two wheat harvesting periods, greatly save the cost of SAGD crude oil extraction.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the manifold structure diagram of embodiment of the present utility model.
Description of reference numerals:
10, trunk path; 11, the first connectivity points;
12, the second connectivity points; 20, the first bypass line;
30, the 3rd bypass line; 40, the second bypass line;
50, the 4th bypass line; 71, the first topping-up pump;
72, the second topping-up pump; 73, the 3rd topping-up pump;
74, the 4th topping-up pump; 61, tank is arranged outside first;
62, tank is arranged outside second; 63, tank is arranged outside the 3rd;
101, the first control valve; 102, the second control valve;
103, the 3rd control valve; 104, the 4th control valve;
105, the 5th control valve; 106, the 6th control valve;
107, the 7th control valve; 108, the 8th control valve;
21, first-class gauge; 42, second gauge;
31, the 3rd flow meter; 51, the 4th flow meter;
501, the 5th flow meter; 502, the 6th flow meter;
503, the 7th flow meter; 504, the 8th flow meter;
601, first flow control valve; 602, second adjustable valve;
603, the 3rd flow control valve; 604, the 4th flow control valve;
81, the first pressure gauge; 82, the second pressure gauge;
83, the 3rd pressure gauge; 84, the 4th pressure gauge;
400, transformer; 300, switchbox;
500, instrument room; 100, steam injection well;
200, producing well.
Detailed description of the invention
Hereinafter also describe the utility model in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Exploit in super-viscous oil technology at SAGD, the cycle in the cyclic preheat stage of prior art is oversize, and staff injects vapor recycle preheating 3-12 months in oil well, and cost is too high.Therefore staff applies a kind of manifold for SAGD minute-pressure rip current journey, in early stage in cyclic preheat stage, first hot water is used to carry out micro-fracturing operation to the oil reservoir between steam injection well 100 and producing well 200, namely the technical solution of the utility model is applied, hot water is extruded the oil reservoir between steam injection well 100 and producing well 200 by manifold of the present utility model by staff, make oil reservoir between steam injection well 100 and producing well 200 by pressure break equably, thus in oil reservoir, form more uniform crack, hot water is made to be filled in crack, then reach and make between steam injection well 100 and producing well 200 by object that layer crack is interconnected.Application the technical solution of the utility model carries out micro-fracturing operation to oil reservoir, the general time only needing 7 to 10 days.Staff starts to carry out cyclic preheat to the oil reservoir in oil well more afterwards, namely high-temperature steam is injected, this generally needs the time of about 1 month to form vapor chamber and reaches the object of vapor communication of steam injection well 100 and producing well 200, then can proceed to the oil pumping production phase.
As shown in Figure 1, according to embodiment of the present utility model, the utility model provides a kind of manifold, and this manifold is used for pressure break oil reservoir to be communicated with steam injection well 100 and producing well 200.And this manifold comprises trunk path 10, first bypass line 20, second bypass line 40 and at least one topping-up pump.Trunk path 10 is respectively arranged with on the first connectivity points 11, second connectivity points 12 of corresponding steam injection well 100 and producing well 200 and trunk path 10 and is provided with fluid injection connectivity points, fluid injection connectivity points is arranged between the first connectivity points 11 and the second connectivity points 12, the first end of the first bypass line 20 is communicated with the first connectivity points 11, second end of the first bypass line 20 is connected with the first pipe in steam injection well 100, and topping-up pump liquid injection port is communicated to fluid injection connectivity points.
Application the technical solution of the utility model, by applying this manifold, the oil reservoir between steam injection well 100 and producing well 200 is extruded, make oil reservoir between steam injection well 100 and producing well 200 by pressure break equably, thus reach the object making to be interconnected between steam injection warp and producing well 200.Usually, the technical method of prior art is answered to carry out pressure break to oil reservoir, the general needs time of 3 months, and apply the technical solution of the utility model, manifold can inject hot water to steam injection well 100 and producing well 200 simultaneously extrude oil reservoir, thus from the both sides of oil reservoir, oil reservoir is extruded, make pressure break oil reservoir and connection speed is accelerated, can effectively by about the time shorten to 1 of more than 3 months required for the operating time of prior art month, substantially reduce the operating time being communicated with oil reservoir, thus about bimestrial steam use amount can be saved, save great amount of cost.
Further, manifold also comprises the 3rd bypass line 30 and the 4th bypass line 50, the first end of the 3rd bypass line 30 is communicated with the third connecting point on trunk path 10, second end of the 3rd bypass line 30 is connected with the 3rd pipe in steam injection well 100, the first end of the 4th bypass line 50 is communicated with the 4th connectivity points, and the second end of the 4th bypass line 50 is connected with the 4th pipe in producing well 200; Trunk path 10 is also provided with third connecting point and the 4th connectivity points, third connecting point and the 4th connectivity points are communicated with successively between the first connectivity points 11 and the second connectivity points 12; Fluid injection connectivity points comprises steam injection well 100 fluid injection point and producing well 200 fluid injection point, steam injection well 100 fluid injection point is arranged on the trunk path 10 between the first connectivity points 11 and third connecting point, and producing well 200 fluid injection point is arranged on the trunk path 10 between the 4th connectivity points and the second connectivity points 12; The liquid injection port that topping-up pump comprises the first topping-up pump 71 and the second topping-up pump 72, first topping-up pump 71 is communicated with steam injection well 100 fluid injection point, and the liquid injection port of the second topping-up pump 72 is communicated with producing well 200 fluid injection point.
By two topping-up pumps: the first topping-up pump 71 and the second topping-up pump 72 carry out independently water flood operations to steam injection well 100 and producing well 200 respectively, meet minute-pressure and split oil reservoir technique extrudes oil reservoir technological requirement to steam injection well 100 and producing well 200 water filling simultaneously.
Preferably, steam injection well 100 fluid injection point comprises the first steam injection well 100 fluid injection point and the second steam injection well 100 fluid injection point that set gradually, and producing well 200 fluid injection point comprises the first producing well 200 fluid injection point and the second producing well 200 fluid injection point that set gradually; Topping-up pump also comprises the 3rd topping-up pump 73 and the 4th topping-up pump 74, the liquid injection port of the first topping-up pump 71 is communicated with the first steam injection well 100 fluid injection point, 3rd topping-up pump 73 is communicated with the second steam injection well 100 fluid injection point, second topping-up pump 72 is communicated with the first producing well 200 fluid injection point, and the 4th topping-up pump 74 is communicated with the second producing well 200 fluid injection point.
Now, the hot water injected in steam injection well 100 is controlled by the first topping-up pump 71 and the 3rd topping-up pump 73, and the hot water injected in producing well 200 is controlled by the second topping-up pump 72 and the 4th topping-up pump 74.By the first topping-up pump 71, second topping-up pump 72, the 3rd topping-up pump 73 and the 4th topping-up pump 74, achieve two-tube manifold simultaneously in steam injection well 100 or the while of carrying out in producing well 200 hot-water flooding oil reservoir is extruded, meet the technological requirement that technique for oil formation is split in minute-pressure.
Particularly, manifold comprises first outer row's tank 61, second outer row tank 62 and the 3rd outer row's tank 63, first outer row tank 61 and is communicated with first end at trunk path 10, and second outer row's tank 62 is communicated with the second end at trunk path 10; 3rd outer row's tank 63 is communicated with outer row's connectivity points of trunk path 10, and outer row's connectivity points is arranged between the second connectivity points 12 and third connecting point.
Staff is according to the needs of actual fluid injection, making the liquid exceeding pressure break oil reservoir operating pressure part in well in steam injection well 100 by draining into outside the 3rd bypass line 30 in the 3rd outer row's tank 63, also making the liquid exceeding pressure break oil reservoir operating pressure part in well in producing well 200 by draining into outside the 4th bypass line 50 in the 3rd outer row's tank 63.Like this, drain into discharging liquid inside and outside the cleaner well in the 3rd outer row's tank 63 outside this part and can put into fluid injection side's filling or No. two fluid injection sides' fillings again, then cycling and reutilization carries out fracturing operation to the oil reservoir in oil well.
When the pressure of the hot water injected in steam injection well 100 or the pressure of hot water that injects in producing well 200 are higher than formation pressure time, then to stop continuing to inject hot water or stop continuing hot-water flooding in producing well 200 in steam injection well 100, and now need by the aqueous reflux in steam injection well 100 or in producing well 200 out, pressure in steam injection well 100 or in producing well 200 is reduced, to ensure oil reservoir pressure break equably in certain range hydraulic pressure.So, hot water in steam injection well 100 after being raised by pressure or in producing well 200 is outwards derived, and received the hot water of derivation respectively by first outer row's tank 61, second outer row tank 62 and the 3rd outer row's tank 63, to recycle the hot water of discharging in steam injection well 100 or in producing well 200.
More specifically, the first end of trunk path 10 is provided with the first diffluence pass and the second diffluence pass, second end of trunk path 10 is provided with the 3rd diffluence pass and the 4th diffluence pass, first outer row's tank 61 is communicated with the first diffluence pass, second diffluence pass is communicated to the first tank car, second outer row's tank 62 is communicated with the 3rd diffluence pass, and the 4th diffluence pass is communicated to the second tank car.
In early stage, the well liquid discharged due to steam injection well 100 or producing well 200 is very sordid, and so messy water generally can not be recycled, but it is directly transported to Sewage Disposal.Therefore, in the sordid situation of well liquid of discharging early stage, the well liquid of discharge is made not flow into first outer row's tank 61, second outer row tank 62 and the 3rd outer row's tank 63, but flow directly in the first tank car or the second tank car, then the well liquid of discharge fortune is done sewerage treatment, and then the water after sewerage treatment that is used.
Further, trunk path 10 also comprises the first control valve 101, second control valve 102, 3rd control valve 103, 4th control valve 104, 5th control valve 105, 6th control valve 106, 7th control valve 107 and the 8th control valve 108, first control valve 101 is arranged on the trunk path 10 between the first connectivity points 11 and the first steam injection well fluid injection point, second control valve 102 is arranged on the trunk path 10 between the first steam injection well fluid injection point and the second steam injection well fluid injection point, 3rd control valve 103 is arranged on the trunk path 10 between the second steam injection well fluid injection point and third connecting point, 4th control valve 104 is arranged on the trunk path 10 between third connecting point and outer row's connectivity points, 5th control valve 105 is arranged on the trunk path 10 between outer row's connectivity points and the 4th connectivity points, 6th control valve 106 is arranged on the trunk path 10 between the 4th connectivity points and the first producing well fluid injection point, 7th control valve 107 is arranged on the trunk path 10 between the first producing well fluid injection point and the second producing well fluid injection point, 8th control valve 108 is arranged on the trunk path 10 between the second producing well fluid injection point and the second connectivity points 12.
By to the first control valve 101, second control valve 102, the 3rd control valve 103, the 4th control valve 104, the 5th control valve 105, the 6th control valve 106, difference between the 7th control valve 107 and the 8th control valve 108 with the use of mode, the function of different hot-water floodings can be realized.
Such as, first control valve 101 and the 3rd control valve 103 are opened, second control valve 102 and the 4th control valve 104 are closed, then now the first topping-up pump 71 injects hot water independently to the first pipe of steam injection well 100 and long tube, and the 3rd topping-up pump 73 injects hot water independently to the 3rd pipe of steam injection well 100 and short tube.
Again such as, first control valve 101, second control valve 102 and the 4th control valve 104 are opened, and the 3rd control valve 103 is closed, the course of work is now then that heat-exchanger pump is all delivered in the first bypass line by the first topping-up pump and the second topping-up pump, then enter into oil well from the first bypass line to pressurize to oil reservoir, the 3rd bypass line be now connected with the short tube in oil well is then derive outside well liquid to the 3rd to arrange in tank 63 outside oil well.
In the Combination application that these are different, in order to realize different liquid injecting functions, staff carries out selection according to concrete requirement to each control valve and coordinates.The method of Valve controlling at producing well 200 place is close with the method for the Valve controlling of steam injection Jing100Chu, here no longer repeated description.
Preferably, manifold also comprises first-class gauge 21, second gauge 42, the 3rd flow meter 31 and the 4th flow meter 51, first-class gauge 21 is arranged on the first bypass line 20, second gauge 42 is arranged on the second bypass line 40,3rd flow meter 31 is arranged on the 3rd bypass line 30, and the 4th flow meter 51 is arranged on the 4th bypass line 50.
By being arranged on multiple flow meter on manifold and pressure gauge, staff can know clearly the water yield and the pressure of the hot water injected in steam injection well 100 or producing well 200, thus well from controlling the hot water amount that is injected in steam injection well 100 or producing well 200 to control the force value in oil well, thus make staff the pressure of the hot water in oil well splits in the extrusion process of oil reservoir oil well in minute-pressure can be detected all the time.
Further, manifold also comprises the 5th flow meter 501, the 6th flow meter 502, the 7th flow meter 503 and the 8th flow meter 504,5th flow meter 501 is arranged on the trunk path 10 between the first end of trunk path 10 and the first connectivity points 11,6th flow meter 502 is arranged on the trunk path 10 between third connecting point and outer row's connectivity points, 7th flow meter 503 is arranged on the trunk path 10 between outer row's connectivity points and the 4th connectivity points, and the 8th flow meter 504 is arranged on the trunk path 10 between the second connectivity points and the second end of trunk path 10.
By the detection of the 5th flow meter 501, the 6th flow meter 502, the 7th flow meter 503 and the 8th flow meter 504, staff can know clearly when in steam injection well 100 or time in producing well 200, heat hydraulic pressure is too high, hot water is discharged outside well, thus make the hot water water yield of staff from discharge and the hot water amount of injection, just can calculate the hot water amount of steam injection well 100 and the injection of producing well 200 reality.
Preferably, manifold also comprises first flow control valve 601, second adjustable valve 602, 3rd flow control valve 603 and the 4th flow control valve 604, first flow control valve 601 is arranged on the trunk path 10 between the first end of trunk path 10 and the 5th flow meter 501, second adjustable valve 602 is arranged on the trunk path 10 between the 6th flow meter 502 and outer row's connectivity points, 3rd flow control valve 603 is arranged on the trunk path 10 between outer row's connectivity points and the 7th flow meter 503, 4th flow control valve 604 is arranged on the trunk path 10 between the 8th flow meter 504 and the second end of trunk path 10.
At the 5th flow meter 501, 6th flow meter 502, each corresponding position of the 7th flow meter 503 and the 8th flow meter 504, when the water yield of outer row's well liquid being detected, staff is by controlling first flow control valve 601, second adjustable valve 602, 3rd flow control valve 603 and the uninterrupted of the 4th flow control valve 604 to corresponding outer row's well liquid everywhere control, thus well by the well liquid water rate control of outer row in the scope of appropriateness, therefore, it is possible to actuating pressure minute-pressure being split oil reservoir controls comparatively even, thus make oil reservoir equably by hot water pressure break, then steam injection well 100 is made to be connected with producing well 200.
Manifold also comprises the first pressure gauge 81, second pressure gauge 82, the 3rd pressure gauge 83 and the 4th pressure gauge 84, first pressure gauge 81 is arranged on the first bypass line 20, second pressure gauge 82 is arranged on the 3rd bypass line 30,3rd pressure gauge 83 is arranged on the 4th bypass line 50, and the 4th pressure gauge 84 is arranged on the second bypass line 40.
Have at the flow of staff to hot water on the basis clearly monitored, in order to enable staff to the pressure in steam injection well 100 or in producing well 200 have clearer, get information about, therefore, the pressure applied in the first pressure gauge 81, second pressure gauge 82, the 3rd pressure gauge 83 and the 4th pressure gauge 84 pairs of respective line is measured, in the activities that staff is split in minute-pressure, the pressure condition in oil well can both be known at any time, thus the concrete operations of fluid injection are adjusted, to adapt to different fluid injection needs.
According to another aspect of the present utility model, the utility model provides a kind of pressure break oil reservoir connected oil wells technique.This pressure break oil reservoir connected oil wells technique comprises the following steps:
Step S1: fracturing operation is carried out to the oil-well strata pressure of adjacent same layer position, until formation fracture, and described oil-well strata pressure limit P1 is measured, namely tried to achieve by the actual pressure break of well, to determine the force value of the fracture pressure P1 of described oil-well strata;
Except direct, fracturing operation is carried out to record except the method for formation fracture pressure value to oil-well strata, the theory calculate of prior art can also be utilized, the method for the test of rock core records.
Step S2: apply aforesaid manifold and simultaneously inject the hot water that is in the first preset pressure scope P2 to extrude oil reservoir to steam injection well 100 and producing well 200 in the first predetermined amount of time T1, wherein, in whole injection process, P2 slowly rises, keep stable even within a certain period of time, first time period T1 is 6 to 8 days, and heat hydraulic pressure in the meantime requires P2 < P1; And in 6 to 8 days, staff controls all the time and keeps P2 < P1, when P2 is close to P1, staff is by arranging the liquid in oil well outward or closing topping-up pump, to keep the second preset pressure P2 < P1;
Step S3: apply manifold and inject the hot water that is in the second predetermined pressure range P3 to extrude oil reservoir to steam injection well 100 separately in the second predetermined amount of time T2; wherein; in the process of whole step S3; P3 slowly rises; keep stable even within a certain period of time; second predetermined amount of time is 1 to 2 day, and heat hydraulic pressure finally reaches P3 > P1.
The sart point in time B of heat hydraulic pressure P3 > P1 can be set in the sart point in time of the last day that the operation of pressure break oil reservoir terminates (also can by the needs of staff according to actual fluid injection, determine that certain time point be relatively suitable for is as the sart point in time B making heat hydraulic pressure P3 > P1 by staff), in time period before time point B, although P3 is rising lentamente, but necessarily require to keep P3 < P1, in the operation of the pressure oil reservoir after time point B, the heat hydraulic pressure P3 risen gradually exceedes fracture pressure P1, to realize oil reservoir finally by pressure burst communicatin (being namely communicated with between Injection Well and producing well 200), then staff carries out the operation of vapor recycle preheating to the oil reservoir in oil well.
First topping-up pump 71, second topping-up pump 72, the 3rd topping-up pump 73 and the 4th topping-up pump 74 use a switchbox 300 to power jointly, and switchbox 300 connection transformer 400, staff utilizes transformer 400 to carry out the supply voltage of distribution control box 300.
Staff observes the parameter value that each flow meter and each pressure gauge record in fluid injection operating process, to understand the actual progress of fluid injection by the Displaying Meter in instrument room 500.
Explain and illustrate:
Formation fracture pressure: in oil well, can make formation fracture when the pressure of Squeezing Ground reaches a certain value, this pressure is called formation fracture pressure.Formation fracture pressure is a significant data of current Drilling Design.Formation fracture pressure can be tried to achieve by the test of theory calculate, rock core and the actual pressure break of well.
Pressure break: refer in oil recovery process, utilize hydraulic action, makes oil reservoir form a kind of method in crack, also known as oil formation hydraulic fracturing.
Formation fracturing activities is with fracturing unit truck, liquid high-pressure large-displacement with certain viscosity clamp-ons oil reservoir, after oil reservoir is extruded many cracks, add proppant (as crack is entered in the fillings such as quartz sand, improve the penetrating power of oil reservoir, to increase water injection rate (note well liquid) or oil production (oil well).Conventional well killing fluid has aqueous fracturing fluid, oil base fracturing fluid, emulsus fracturing fluid, foam fracturing fluid and acid-base fracturing fluid 5 kinds of fundamental types.
The utility model provides a kind of SAGD minute-pressure rip current journey manifold and micro-Fracturing Technology, the utility model use hot water carries out minute-pressure to the oil reservoir between steam injection well 100 and producing well 200 and splits, namely the technical solution of the utility model is applied, hot water is extruded the oil reservoir between steam injection well 100 and producing well 200 by this manifold of application, make stratum between steam injection well 100 and producing well 200 by pressure break equably, form more uniform microcrack, hot water is made to be filled in microcrack, thus reach the object making first to utilize hot water extruding oil reservoir to be interconnected to make steam injection well 100 and producing well 200 between steam injection well 100 and producing well 200, realize vapor recycle preheating oil reservoir fast for SAGD exploits next step technique " cyclic preheat " of oil reservoir and be communicated with steam injection well 100 and producing well 200 lays the first stone.The technical scheme of application the utility model technology is carried out minute-pressure to oil reservoir and is split, the general time only needing 7 to 10 days.
Manifold of the present utility model can be a kind of SAGD micro-Fracturing Technology ground flow manifold, and the two pumps composition working barrel group of this pipe-line system design, possesses the condition of working alone between pump group; In each pump group, two pumps can realize huge discharge fluid injection to a single tube simultaneously, also can fluid injection separately; Pipeline between pump group is by Valve controlling.
Flow in pipes in manifold and outer discharge pipe are all provided with ceramic water flow control valve and flow, pressure monitoring instrument, possess the function of flow regulating function and monitor data constantly, what achieve fluid flow reasonably quantizes to inject and the rationally outer object of arranging of fluid flow.
Above-mentioned SAGD micro-Fracturing Technology ground flow manifold meets the micro-Fracturing Technology of SAGD to the requirement of ground flow manifold.Major function is as follows:
(1) function of fluid injection while that, steam injection, oil recovery two well group ground flow manifold possessing, discharge opeing simultaneously;
(2), individual well group possesses the function of single tube water filling, two-tube water filling, single tube discharge opeing, two-tube discharge opeing;
(3), enter pipeline and return monitoring system discharge pipe being provided with flow, pressure;
(4), the two pumps composition working barrel group of design, possess the condition of working alone between pump group, two pumps also can simultaneously to a single tube fluid injection;
(5), outer discharge pipe possesses flow regulating function.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (11)
1. a manifold, for pressure break oil reservoir to be communicated with steam injection well and producing well, is characterized in that, comprising:
Trunk path (10), described trunk path (10) is provided with the first connectivity points (11) and second connectivity points (12) of fluid injection connectivity points and the corresponding described steam injection well of difference and described producing well, and described fluid injection connectivity points is arranged between described first connectivity points (11) and described second connectivity points (12);
First bypass line (20), the first end of described first bypass line (20) is communicated with described first connectivity points (11), and the second end of described first bypass line (20) is connected with the first pipe in described steam injection well;
Second bypass line (40), the first end of described second bypass line (40) is communicated with described second connectivity points (12), and described second end of the second bypass line (40) is connected with the second pipe in described producing well; And
At least one topping-up pump, the liquid injection port of described topping-up pump is communicated to described fluid injection connectivity points.
2. manifold according to claim 1, is characterized in that,
Described trunk path (10) also has and is successively set on third connecting point between described first connectivity points (11) and described second connectivity points (12) and the 4th connectivity points;
Described manifold also comprises the 3rd bypass line (30) and the 4th bypass line (50), the first end of described 3rd bypass line (30) is communicated with the third connecting point on described trunk path (10), described second end of the 3rd bypass line (30) is connected with the 3rd pipe in described steam injection well, the first end of described 4th bypass line (50) is communicated with the 4th connectivity points on described trunk path (10), and described second end of the 4th bypass line (50) is connected with the 4th pipe in described producing well.
3. manifold according to claim 2, is characterized in that,
Described fluid injection connectivity points comprises steam injection well fluid injection point and producing well fluid injection point, described steam injection well fluid injection point is arranged on the described trunk path (10) between the first connectivity points (11) and described third connecting point, and described producing well fluid injection point is arranged on the trunk path (10) between described 4th connectivity points and described second connectivity points (12);
Described topping-up pump comprises the first topping-up pump (71) and the second topping-up pump (72), the liquid injection port of described first topping-up pump (71) is communicated with described steam injection well fluid injection point, and the liquid injection port of described second topping-up pump (72) is communicated with described producing well fluid injection point.
4. manifold according to claim 3, is characterized in that,
Described steam injection well fluid injection point comprises the first steam injection well fluid injection point and the second steam injection well fluid injection point that set gradually, and described producing well fluid injection point comprises the first producing well fluid injection point and the second producing well fluid injection point that set gradually;
Described topping-up pump also comprises the 3rd topping-up pump (73) and the 4th topping-up pump (74), the liquid injection port of described first topping-up pump (71) is communicated with described first steam injection well fluid injection point, described 3rd topping-up pump (73) is communicated with described second steam injection well fluid injection point, described second topping-up pump (72) is communicated with described first producing well fluid injection point, and described 4th topping-up pump (74) is communicated with described second producing well fluid injection point.
5. manifold according to claim 4, is characterized in that,
Described manifold is arranged outside also comprising first to arrange outside tank (62) and the 3rd outside tank (61), second and is arranged tank (63), arrange the first end of tank (61) connection described trunk path (10) outside described first, outside described second, arrange second end of tank (62) connection described trunk path (10); Arrange tank (63) outside described 3rd to be communicated with outer row's connectivity points of described trunk path (10), described outer row's connectivity points is arranged between described second connectivity points (12) and described third connecting point.
6. manifold according to claim 5, is characterized in that,
Described trunk path (10) also comprises the first control valve (101), second control valve (102), 3rd control valve (103), 4th control valve (104), 5th control valve (105), 6th control valve (106), 7th control valve (107) and the 8th control valve (108), described first control valve (101) is arranged on the described trunk path (10) between described first connectivity points (11) and the first steam injection well fluid injection point, described second control valve (102) is arranged on the described trunk path (10) between the first steam injection well fluid injection point and the second steam injection well fluid injection point, described 3rd control valve (103) is arranged on the described trunk path (10) between the second steam injection well fluid injection point and described third connecting point, described 4th control valve (104) is arranged on the described trunk path (10) between described third connecting point and described outer row's connectivity points, described 5th control valve (105) is arranged on the described trunk path (10) between described outer row's connectivity points and described 4th connectivity points, described 6th control valve (106) is arranged on the described trunk path (10) between described 4th connectivity points and the first producing well fluid injection point, described 7th control valve (107) is arranged on the described trunk path (10) between the first producing well fluid injection point and the second producing well fluid injection point, described 8th control valve (108) is arranged on the trunk path (10) between the second producing well fluid injection point and described second connectivity points (12).
7. manifold according to claim 5, is characterized in that,
The first end of described trunk path (10) is provided with the first diffluence pass and the second diffluence pass, second end of described trunk path (10) is provided with the 3rd diffluence pass and the 4th diffluence pass, arrange tank (61) outside described first to be communicated with described first diffluence pass, described second diffluence pass is for being communicated with the first tank car, arrange tank (62) outside described second to be communicated with described 3rd diffluence pass, described 4th diffluence pass is for being communicated with the second tank car.
8. manifold according to claim 5, is characterized in that,
Described manifold also comprises first-class gauge (21), second gauge (42), the 3rd flow meter (31) and the 4th flow meter (51), described first-class gauge (21) is arranged on described first bypass line (20), described second gauge (42) is arranged on described second bypass line (40), described 3rd flow meter (31) is arranged on the 3rd bypass line (30), and described 4th flow meter (51) is arranged on described 4th bypass line (50).
9. manifold according to claim 8, is characterized in that,
Described manifold also comprises the 5th flow meter (501), 6th flow meter (502), 7th flow meter (503) and the 8th flow meter (504), described 5th flow meter (501) is arranged on the described trunk path (10) between the first end of described trunk path (10) and described first connectivity points (11), described 6th flow meter (502) is arranged on the described trunk path (10) between described third connecting point and described outer row's connectivity points, described 7th flow meter (503) is arranged on the described trunk path (10) between described outer row's connectivity points and described 4th connectivity points, described 8th flow meter (504) is arranged on the described trunk path (10) between described second connectivity points (12) and the second end of described trunk path (10).
10. manifold according to claim 9, is characterized in that,
Described manifold also comprises first flow control valve (601), second adjustable valve (602), 3rd flow control valve (603) and the 4th flow control valve (604), described first flow control valve (601) is arranged on the described trunk path (10) between the first end of described trunk path (10) and described 5th flow meter (501), described second adjustable valve (602) is arranged on the described trunk path (10) between described 6th flow meter (502) and described outer row's connectivity points, described 3rd flow control valve (603) is arranged on the described trunk path (10) between described outer row's connectivity points and described 7th flow meter (503), described 4th flow control valve (604) is arranged on the described trunk path (10) between described 8th flow meter (504) and the second end of described trunk path (10).
11. manifolds according to claim 2, is characterized in that,
Described manifold also comprises the first pressure gauge (81), the second pressure gauge (82), the 3rd pressure gauge (83) and the 4th pressure gauge (84), described first pressure gauge (81) is arranged on described first bypass line (20), described second pressure gauge (82) is arranged on described 3rd bypass line (30), described 3rd pressure gauge (83) is arranged on described 4th bypass line (50), and described 4th pressure gauge (84) is arranged on described second bypass line (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420675739.8U CN204252986U (en) | 2014-11-06 | 2014-11-06 | Manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420675739.8U CN204252986U (en) | 2014-11-06 | 2014-11-06 | Manifold |
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| Publication Number | Publication Date |
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| CN204252986U true CN204252986U (en) | 2015-04-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587302A (en) * | 2014-11-06 | 2016-05-18 | 中国石油天然气股份有限公司 | Manifold and oil well communicating process by fracturing oil layer through manifold |
| CN106444647A (en) * | 2015-08-13 | 2017-02-22 | 中国石油天然气股份有限公司 | Data acquisition and control system for steam drive mining method |
| CN106545322A (en) * | 2015-09-21 | 2017-03-29 | 中国石油天然气股份有限公司 | The crowded liquid preprocess method of SAGD pit shafts |
-
2014
- 2014-11-06 CN CN201420675739.8U patent/CN204252986U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587302A (en) * | 2014-11-06 | 2016-05-18 | 中国石油天然气股份有限公司 | Manifold and oil well communicating process by fracturing oil layer through manifold |
| CN105587302B (en) * | 2014-11-06 | 2018-12-25 | 中国石油天然气股份有限公司 | The pressure break oil reservoir connected oil wells technique of manifold and the application manifold |
| CN106444647A (en) * | 2015-08-13 | 2017-02-22 | 中国石油天然气股份有限公司 | Data acquisition and control system for steam drive mining method |
| CN106545322A (en) * | 2015-09-21 | 2017-03-29 | 中国石油天然气股份有限公司 | The crowded liquid preprocess method of SAGD pit shafts |
| CN106545322B (en) * | 2015-09-21 | 2019-05-07 | 中国石油天然气股份有限公司 | The crowded liquid preprocess method of SAGD pit shaft |
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Granted publication date: 20150408 Effective date of abandoning: 20181225 |