CN104453823B - Small sand mulling pumping device - Google Patents

Small sand mulling pumping device Download PDF

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Publication number
CN104453823B
CN104453823B CN201410496528.2A CN201410496528A CN104453823B CN 104453823 B CN104453823 B CN 104453823B CN 201410496528 A CN201410496528 A CN 201410496528A CN 104453823 B CN104453823 B CN 104453823B
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China
Prior art keywords
sand
spiral
mulling
horizontal
sediment transport
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CN201410496528.2A
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Chinese (zh)
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CN104453823A (en
Inventor
柴龙
孙虎
赵维斌
王祖文
白明伟
费节高
兰建平
张铁军
谭爱兵
钟新荣
陈飞
张小平
李绪谊
邓斌奇
王美琴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
CNPC Chuanqing Drilling Engineering Co Ltd
Original Assignee
Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
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Priority to CN201410496528.2A priority Critical patent/CN104453823B/en
Publication of CN104453823A publication Critical patent/CN104453823A/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25Methods for stimulating production
    • E21B43/26Methods for stimulating production by forming crevices or fractures
    • E21B43/267Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping

Abstract

The invention provides a small sand mulling pumping device which comprises a prying frame, an engine, a mechanical transmission case and a plunger pump. The engine is arranged on the prying frame in a prying mode, the plunger pump is arranged on one side of the transmission case, a sand mulling pot is arranged on one side of the plunger pump, the top end of the sand mulling pot is provided with a horizontal type spiral sand conveyer, the input end of the sand mulling pot is connected with a suction manifold, and the output end of the sand mulling pot is connected with a discharge manifold which is connected with the plunger pump. The small sand mulling pumping device further comprises a PLC control unit controlling the rotating speed of the transmission case and the rotating speed of a reel of the horizontal type spiral sand conveyer. The horizontal type spiral sand conveyer comprises a horizontal type sand conveying spiral, a sand storage device arranged at the upper end of the horizontal type sand conveying spiral, and a reel counter arranged at one end of the horizontal type sand conveying spiral. The horizontal type sand conveying spiral is perpendicular to the axial direction of the sand mulling pot. According to the small sand mulling pumping device, small-displacement sand liquid mulling is achieved through the plunger pump, low sand proportion is achieved by arranging the horizontal type spiral sand conveyer on the top of the sand mulling pot, integrated prying is carried out, small-displacement and low-sand-concentration accurate control is achieved, and it is ensured that coiled tubing manufacturing is smoothly achieved.

Description

A kind of small-sized mulling infusion device
Technical field
The invention provides a kind of small-sized mulling infusion device, is mainly used in oil, gas well coiled tubing spy and makees technology neck Domain.
Background technology
In recent years, coiled tubing technology at home generally carry out by each elephant,Coiled tubingAlso known as coiled tubing, coil Or coil pipe, refer to can be wrapped on major diameter drum, by some sections of steel band mitereds together, the nothing that Jing roll formings are welded connects Head coiled tubing.This successional oil pipe with high intensity, high tenacity feature, profile is just as high rolled-up electricity more than two meters Cable is the same, and conventional oil pipe can be replaced to carry out many operations, the spy that continuous oil pipe operation equipment has Operating Pressure, continuously removes Point, equipment volume is little, and duty cycle is fast, low cost.Due to improve automatization and mobility is good, make operation more safe and efficient Environmental protection, applies after petroleum industry, and at nearest this 20 years multinomial oil gas field of operation was widely used in.Continuous oil Pipe except for oil plant collection it is defeated in addition to,Coiled tubingOil drilling, completion are can be widely used at present, pressure break, acidifying, discharge opeing, formation testing, adopted The fields such as oily gas production, well workover, gathering line de-plugging, only well workover aspect available more than 10 plants technique.Because applied widely, rarely have one Item technology can compare favourably therewith.In oil and gas industry, coiled tubing and its working equipment are visually referred to as " omnipotent working rig ".With Traditional work is compared,Coiled tubingDuty cycle is short, accident rate is low, convenient transportation;Energy no killing well Operating Pressure, protection oil gas storage Layer;Horizontal well, directional well operation are convenient and swift;Oily intraductal operation, operation through tubing etc. can be carried out.Compared with traditional drilling well, even Continuous tubing drilling is improving drilling technology or reduces cost(25%~40% expense can be saved),Directed drillingWithUnderbalance is bored WellAspect is in technical advantage status.
Coiled tubing generally only needs to low row in terms of the special works such as water-jet, down-hole cutting, the punching of horizontal well horizontal segment Amount, low sand concentration load fluid are used as hydraulic fluid.But at present at the scene in work progress, actually used is to be matched in pressure break machine Group fracturing blender truck, and fracturing blender truck due to design discharge capacity and design ompetence it is excessive, it is impossible to accurately configure reach design will The mulling liquid asked, it is therefore possible to causing the related special failure made of coiled tubing.In addition, fracturing blender truck is before mixing mulling liquid, Need that haydite is delivered to into mixing device by sand conveying device, and existing sand conveying device will be made pottery in haydite course of conveying Grain is conveyed from low to high by sediment transport spiral, and during upper sand, part haydite will not be by sediment transport due to the impact of gravity Device is delivered to mixing sand tank, and sand is less efficient to cause spiral sand conveying reel to go up in use, causes sediment transport amount to have certain ripple It is dynamic, therefore the sand conveying device of routine has that upper sand efficiency is too low.For this purpose, being badly in need of developing a kind of small-sized mulling infusion device As coiled tubing in such special corollary equipment made.
The content of the invention
The invention provides a kind of small-sized mulling infusion device, solves the fracturing blender truck designing and arranging of existing Frac unit configuration Amount and design ompetence are excessive, it is impossible to accurately configure small displacement, the problem of low concentration mulling liquid for reaching design requirement.
For this purpose, the invention provides a kind of small-sized mulling infusion device, including pry bracket and skid starting in the pry bracket Machine and the electromotor mechanical transmission case for connecting and the plunger displacement pump for being arranged on mechanical transmission case side, the one of the plunger displacement pump Side is provided with mixing sand tank, and the top of mixing sand tank is provided with horizontal spiral sand deliverer;
The input of the mixing sand tank is connected with suction manifold, and outfan is connected with exhaust manifold, described exhaust manifold It is connected with plunger displacement pump;
Described mulling infusion device also includes control machinery formula transmission case rotating speed and horizontal spiral sand deliverer reel rotating speed PLC control unit;
Described horizontal spiral sand deliverer include horizontal sediment transport spiral, be arranged on horizontal sediment transport spiral upper end sand storing machine and The reel enumerator of horizontal sediment transport spiral one end is arranged on, described horizontal sediment transport spiral is perpendicular to the axially arranged of mixing sand tank.
Described suction manifold is connected with suction pump.
Described exhaust manifold is connected with excavationg pump.
Described plunger displacement pump is also associated with coiled tubing.
Two-shipper double pump is parallel between described mixing sand tank and coiled tubing.
Described plunger displacement pump is three-cylinder plunger pump.
Beneficial effects of the present invention:Solve the fracturing blender truck design discharge capacity and design ompetence of existing Frac unit configuration It is excessive, it is impossible to accurately to configure small displacement, the problem of low concentration mulling liquid for reaching design requirement.The mulling infusion device is Vehicle-mounted small skid mounted equipment, integrated mixing device and infusion device simultaneously are unified to be arranged in a pry bracket, by conventional mulling The function that device and fracturing device have unites two into one.Small displacement mulling liquid is realized by high-pressure plunger pump, by will be horizontal Spiral Thread-feeding device is arranged at the top of mixing sand tank realizes low sand ratio, so as to realize the precise control of sand ratio.For coiled tubing waterpower Jobs that requires special skills infusion small displacement, the low sand such as injection, cutting operation, horizontal well horizontal segment drilling operation than load fluid, to guarantee spy Plant operation smoothly to normally complete.
The present invention is described in further details below with reference to accompanying drawing.
Description of the drawings
Fig. 1 is the structural representation of mulling infusion device.
Fig. 2 is the schematic diagram of horizontal spiral Thread-feeding device.
Reference:1st, fuel tank;2nd, hydraulic fan;3rd, pry bracket;4th, baric systerm;5th, hydraulic system;6th, heating system;7、 Electromotor;8th, mechanical transmission case;9th, plunger displacement pump;10th, suction manifold;11st, mixing sand tank;12nd, horizontal spiral sand deliverer;It is 12a, sleeping Formula sediment transport spiral;12b, sand storing machine;12c, reel enumerator;13rd, PLC control unit;14th, exhaust manifold;15 suction pumps;16、 Excavationg pump.
Specific embodiment
Embodiment 1:
As shown in figure 1, a kind of small-sized mulling infusion device, including pry bracket 3(For the support of mulling infusion device, whole dress Put convenient lifting and carrying in pry bracket 3)The machinery of electromotor 7 and electromotor 7 connection with skid in the pry bracket 3 Formula transmission case 8(Mechanical transmission case 8 plays the function of power transmission, meanwhile, in the connection of mechanical transmission case 8 and electromotor 7 Place is provided with transfer case, for power distribution)With the plunger displacement pump 9 for being arranged on the side of mechanical transmission case 8, the one of the plunger displacement pump 9 Side is provided with mixing sand tank 11, and the top of mixing sand tank 11 is provided with horizontal spiral sand deliverer 12;The input of the mixing sand tank 11 connects Suction manifold 10 is connected to, suction manifold 10 is used to draw liquid into mixing sand tank 11, and outfan is connected with exhaust manifold 14, discharges Manifold 14 is used to for the liquid of mixing sand tank 11 to be delivered to plunger displacement pump 9 or is delivered to the two-shipper double pump of outside.Described exhaust manifold 14 are connected with plunger displacement pump 9;Described mulling infusion device also includes the rotating speed of control machinery formula transmission case 8 and horizontal spiral sand deliverer The PLC control unit 13 of 12 reel rotating speeds, the paxcdl10 controllers that the PLC control unit 13 is produced using red lion redlion;
As shown in Fig. 2 described horizontal spiral sand deliverer 12 includes horizontal sediment transport spiral 12a, is arranged on horizontal sediment transport spiral shell The sand storing machine 12b of rotation 12a upper ends and the reel enumerator 12c for being arranged on horizontal sediment transport spiral 12a one end, described horizontal sediment transport Spiral 12a is axially arranged perpendicular to mixing sand tank 11.
Described suction manifold 10 is connected with suction pump 15, the row of being connected between described exhaust manifold 14 and plunger displacement pump 9 Go out pump 16, described plunger displacement pump 9 is connected with coiled tubing.Two-shipper double pump is parallel between mixing sand tank 11 and coiled tubing, it is described Two-shipper double pump be skid high pressure pumping-in equipment, discharge capacity and pressure-bearing it is higher relative to the three-cylinder plunger pump 9 of skid, plunger displacement pump 9 It is three-cylinder plunger pump.
The course of work of the device is:During mulling infusion device busy, liquid is sucked by suction pump 15, and by liquid Body pumps into mixing sand tank 11 by suction manifold 10, while sand is input into mixing sand tank 11, liquid and sand by horizontal spiral sand deliverer 12 After son is mixed in mixing sand tank 11, excavationg pump 16 is expelled to, and mulling liquid pump is entered into plunger displacement pump 9 by excavationg pump 16, then Mulling liquid pump is entered into coiled tubing by plunger displacement pump 9, is injected into well by coiled tubing, constructed.
Fracturing blender truck before mixing mulling liquid needed that haydite is delivered to into mixing sand tank 11 by horizontal spiral sand deliverer 12, And existing screw conveyer in haydite course of conveying, haydite is being carried out from low to high by sediment transport spiral conveying upper sand During, part haydite due to the impact of gravity and the abrasion of reel, the sky that sand can be between sediment transport spiral and reel outer wall Flow down in gap, sand efficiency is unstable to cause spiral sand conveying reel to go up in use, cause sediment transport amount to have certain fluctuation, Generally in the course of conveying of little sand ratio, the reel rotating speed of conventional sediment transport reel is not more than 10 turns, now due to sediment transport efficiency Impact, sand is than occurring larger fluctuation, it is impossible to stable, or even the less efficient situation of sand on reel use time is longer Under, sand cannot just be delivered to mixing sand tank 11.In order to avoid the generation of the problems referred to above, horizontal spiral sand deliverer 12 adopts horizontal spiral shell Rotation sand deliverer 12, by horizontal spiral horizontal spiral sand deliverer 12 top of mixing sand tank 11 is arranged on, and specific operating process is as follows:
Realize the precise control of low sand ratio:In work progress, haydite is placed in sand storing machine 12b in advance, due to even Required sand amount is less during the special work of continuous oil pipe, therefore it is 3.0m to design the volume of sand storing machine 12b3.Haydite is by horizontal defeated Haydite is transported to mixing sand tank 11 by sand spiral 12a, and reel enumerator 12c is used to carry out sediment transport reel rotating speed real-time monitoring simultaneously Reach control instrument.Because horizontal sediment transport spiral 12a is perpendicular to the axially placed of mixing sand tank 11, and sand storing machine 12b be arranged on it is sleeping The top of formula sediment transport spiral 12a, therefore in work progress, it is to avoid conventional fracturing blender truck spiral sand conveying reel is conveyed in haydite During haydite is conveyed from low to high by sediment transport spiral, during the upper sand for causing, part haydite is due to gravity Impact will not be delivered to mixing sand tank 11 by sand deliverer, and the upper sand efficiency for causing spiral sand conveying reel to exist in use is low Problem, it is ensured that each sand amount sent of transferring of sediment transport spiral is stablized and the loss of sediment transport spiral inefficiency, and then realizes that small displacement is low The precise control of sand ratio.In the present invention, to realize that the little sand of low discharge capacity compares precise control, it is necessary to reach reel sediment transport efficiency 100%, therefore using horizontal spiral sand deliverer, the sand amount that each turn of sediment transport reel is conveyed all is a definite value, particularly by The reel rotating speed of the control horizontal spiral sand deliverer of PLC control unit 13 controls sand concentration controlling to convey the amount of sand Just, therefore the precise control of little sand ratio can be realized, reel can be made to reach the effect of stable sediment transport.
Realize the precise control of small displacement:By equipment such as electromotor 7, mechanical transmission case 8, plunger displacement pumps 9, implement Process provides power by electromotor 7, then power is transferred to into plunger displacement pump 9 by mechanical transmission case 8, then has plunger displacement pump 9 to discharge To coiled tubing, shaft bottom is drained into by coiled tubing.PLC control unit 13 is controlled by the rotating speed of control machinery formula transmission case 8 The power of plunger displacement pump 9 is passed to, so as to control the output discharge capacity of plunger displacement pump 9.
The device adopts three-cylinder plunger pump, and the pump is existing product(STP600 types plunger displacement pump 9), realized by said apparatus The precise control of 50-500L/min small displacements, solves conventional mulling, fracturing unit discharge capacity and is less than 1m3Discharge capacity is not during/min Accurately problem, mainly completes the work of high pressure infusion.During operation, mixing sand tank 11 passes through the liquid self-feeding of suction pump 15(Car)Tank is sucked Liquid, mixing sand tank 11 is input into by horizontal spiral sand deliverer 12 by sand, and after mixing in mixing sand tank 11, Jing low-pressure manifolds send To the suction inlet of plunger displacement pump 9, plunger displacement pump 9 mixed liquor is pressurizeed after Jing coiled tubings be injected into shaft bottom carry out water-jet, cutting make The jobs that requires special skills such as industry, horizontal well horizontal segment drilling operation.
Compared with traditional hydraulic drive case, the present invention adopts mechanical transmission case 8.Fluid pressure type transmission case is in the course of work In, it is necessary to blocking is operated in, that is, the rotating speed of electromotor 7 must be over 1650 revs/min, once in not blocking fortune OK, fluid pressure type transmission case can be burnt because temperature is too high in the short time.And then there are no problems in mechanical transmission case 8. Following table is a transmission case of plunger displacement pump 9 rotating speed and synopsis of discharge capacity in 1-3 shelves, by taking the pump as an example, is such as passed using fluid pressure type Dynamic case, the pump can not be operated in below discharge capacity 62L/min, meanwhile, discharge capacity can not reach 70-80L/min, 90-103L/min.And Using mechanical gearbox, then can ensure discharge capacity equipment normal work in the range of 50-120L/min.
The synopsis of the plunger displacement pump transmission case of table one rotating speed and discharge capacity in 1-3 shelves
Fracturing device skid integrated with mixing device completes mulling and infusion on mulling infusion device by an equipment Work, compared with the use that conventional operation reduces fracturing blender truck, pressure break pump truck, reduces hold facility rate.When operational discharge capacity is less than During 350 L/min, without the need for external equipment, the small-sized mulling infusion device directly can carry out supporting for coiled tubing, it is to avoid often The situation for needing various vehicles such as pressure break pump truck, fracturing blender truck to be coordinated in rule continuous oil pipe operation;When operational discharge capacity is more than During 350L/min, the liquid mixed in mixing sand tank 11 supplies coiled tubing and carries out construction operation by two-shipper double pump.
The mulling infusion device also includes:
1)For the fuel tank 1 that whole device provides diesel oil;
2)Temperature, the hydraulic fan 2 of a cooling effect in reduce the course of work of electromotor 7;
3)Aerodynamic force is provided for device, the baric systerm 4 of the lubrication work of three-cylinder plunger pump 9 is mainly completed;
4)There is provided hydraulic power for device, including for agitator in hydraulic faucet, mixing sand tank 11 on exhaust manifold 14 etc. dress Put the hydraulic system 5 that hydraulic power is provided;
5)Complete under cryogenic to the preheating in advance of the equipment such as electromotor 7, transmission case, plunger displacement pump 9 and lubricating system, Facilitate the heating system 6 of the startup of mulling infusion device.Heating system 6 is the heater that existing mixing device is carried, this In be not described in detail.
Sand conveying device in the present invention adopts spiral sand conveying device, it is possible to achieve the precise control to sand ratio.Design simultaneously Two-way is exported, and when operational discharge capacity is less than 350L/min, can be individually for coiled tubing feed flow by the three-cylinder plunger pump 9 of skid;When When operational discharge capacity is more than 350L/min, can external two-shipper double pump be simultaneously coiled tubing feed flow.
Exemplified as above is only the illustration to the present invention, does not constitute the restriction to protection scope of the present invention, all It is that design same or analogous with the present invention is belonged within protection scope of the present invention.

Claims (1)

1. a kind of small-sized mulling infusion device, it is characterised in that:Including pry bracket(1)With skid in the pry bracket(1)On electromotor (7)With electromotor(7)The mechanical transmission case of connection(8)Be arranged on mechanical transmission case(8)The plunger displacement pump of side(9), institute State plunger displacement pump(9)Side be provided with mixing sand tank(11), mixing sand tank(11)Top be provided with horizontal spiral sand deliverer(12);Institute State mixing sand tank(11)Input be connected with suction manifold(10), outfan is connected with exhaust manifold(14), described discharge pipe Converge(14)With plunger displacement pump(9)Connection;Described mulling infusion device also includes control machinery formula transmission case(8)Rotating speed and horizontal spiral shell Rotation sand deliverer(12)The PLC control units of reel rotating speed(13);Described horizontal spiral sand deliverer(12)Including horizontal sediment transport spiral shell Rotation(12a), be arranged on horizontal sediment transport spiral(12a)The sand storing machine of upper end(12b)Be arranged on horizontal sediment transport spiral(12a)One end Reel enumerator(12c), described horizontal sediment transport spiral(12a)Perpendicular to mixing sand tank(11)It is axially arranged;Described suction Enter manifold(10)It is connected with suction pump(15), exhaust manifold(14)It is connected with excavationg pump(16), plunger displacement pump(9)It is also associated with continuous Oil pipe, mixing sand tank(11)Two-shipper double pump is parallel with and coiled tubing between;Plunger displacement pump(9)It is three-cylinder plunger pump;By horizontal spiral Sand deliverer is arranged on the top of mixing sand tank, realizes the precise control of low sand ratio:In work progress, in advance haydite is placed on into storage In sand device, required sand amount is less during making because coiled tubing is special, therefore it is 3.0m to design the volume of sand storing machine3;Haydite Haydite is transported to by mixing sand tank by horizontal sediment transport spiral, reel enumerator is used to carry out real-time monitoring simultaneously to sediment transport reel rotating speed It is uploaded to control instrument;Because horizontal sediment transport spiral is perpendicular to the axially placed of mixing sand tank, and sand storing machine is arranged on horizontal sediment transport The top of spiral, therefore in work progress, it is to avoid conventional fracturing blender truck spiral sand conveying reel in haydite course of conveying will Haydite is conveyed from low to high by sediment transport spiral, and during the upper sand for causing, part haydite will not due to the impact of gravity Mixing sand tank is delivered to by sand deliverer, the problem for causing the upper sand efficiency that spiral sand conveying reel is present in use low makes defeated The each sand amount sent of transferring of sand spiral is stablized and the loss of sediment transport spiral inefficiency, and then realizes the accurate control of the low sand ratio of small displacement System.
CN201410496528.2A 2014-09-25 2014-09-25 Small sand mulling pumping device Active CN104453823B (en)

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