CN206158694U - Choke manifold with adjustable throttle fixed oil nozzle - Google Patents

Abstract

The utility model provides a choke manifold with adjustable throttle fixed oil nozzle, it includes first pipeline cross, a manual flat plate gate valve, an adjustable throttle fixed oil nozzle, first reducing nipple joint, first pipeline five -way, the 2nd manual flat plate gate valve, second pipeline cross, second reducing nipple joint, the manual needle pattern choke valve that connects gradually, the 3rd manual flat plate gate valve, second pipeline five -way, fourth manual flat plate gate valve, fourth manual flat plate gate valve connects first pipeline cross, second pipeline five -way with through the 5th manual flat plate gate valve of tube coupling between the first pipeline five -way. The utility model discloses an adjustable throttle fixed oil nozzle, convenient to use, the abrasion -resistance is good, the glib talker that does not need to be changed, aperture control range is wide, and is resistant convenient towards alteration footpath nipple joint change, has improved whole choke manifold's throttle step -down effect, abrasion -resistance and life, extensive applicability, the practicality is strong, and application effect is showing, is fit for being applied to oil gas well pressure and splits back open flow operation.

Description

Choke manifold with adjustable throttling positive choke

Technical field

This utility model belongs to Oil/gas Well surface throttling Technology field, and in particular to one kind is fixed with adjustable throttling The choke manifold of oil nozzle.

Background technology

Horizontal well volume fracturing technology has obtained large-scale promotion application, every mouthful of well pressure in Changqing oilfields Low permeable oil and gas reservoirs To split needed during rear ground open flow and casing annulus pressure, tubing pressure are controlled, at present domestic and international Oil/gas Well open flow process In, generally open flow operation is controlled using surface throttling manifold.Because existing choke manifold is using in fixation type throttle valve Positive choke carry out reducing pressure by regulating flow, open flow flow-control, but positive choke throttle diameter cannot in its fixation type throttle valve Adjust, while pit shaft returns the liquid for ejecting carries substantial amounts of reservoir sand or perforation sand, cause positive choke port of export erosion tight Weight and the erosion of port of export downstream fluid erosion prevention pipe nipple are damaged, and certain erosion is produced to gate valve, needle-valve, oil nozzle, gate valve and short Section rapid wear frequency is high, and spy devises a kind of choke manifold with adjustable throttling positive choke.

Utility model content

In order to overcome existing choke manifold after pressure break during open flow positive choke throttle diameter cannot adjust, the port of export Serious erosion and the erosion of fluid erosion prevention pipe nipple damage problem, and the purpose of this utility model is to propose that one kind is fixed with adjustable throttling The choke manifold of oil nozzle, to reduce the labor intensity of site operation personnel, reduces the frequency of positive choke and pipe nipple erosion failure, Greatly save throttling open flow time and oil nozzle, pipe nipple replacement cost, significantly increase the reducing pressure by regulating flow of whole choke manifold, resistance to Erosion effect and service life.

To realize above-mentioned technical purpose, this utility model is adopted the following technical scheme that and is achieved.

A kind of choke manifold with adjustable throttling positive choke, including the first pipeline four-way, first pipeline four Logical that there is a manifold set to be put into mouth, the manifold set is put into mouth connection wellhead casing pipe gate valve, and the first pipeline four-way is wherein One mouth of pipe by pipeline be sequentially connected first manual flat gate valve, one it is adjustable throttling positive choke, the first diameter changing nipple, first Pipeline five leads to, and first pipeline five is logical to have a first pipe remittance abroad mouth, the external relief line of first pipe remittance abroad mouth, and described first The logical wherein mouth of pipe of pipeline five is sequentially connected the second manual flat gate valve and the second pipeline four-way, the second pipeline four by pipeline Logical to have a second pipe remittance abroad mouth, the external relief line of second pipe remittance abroad mouth, a wherein mouth of pipe of the second pipeline four-way connects successively The second diameter changing nipple, manual needle-like formula choke valve are connect, the 3rd manual platform gate valve, the second pipeline five leads to, the logical tool of the second pipeline five There is a manifold oil to be put into mouth, the manifold oil is put into mouth connection well mouth oil pipe gate valve, and the logical wherein mouth of pipe of the second pipeline five leads to Cross pipeline and be sequentially connected the 4th manual platform gate valve and the first pipeline four-way；The logical another mouth of pipe of second pipeline five by pipeline according to The 5th manual platform gate valve of secondary connection and the first pipeline five lead to；It is all in choke manifold to be connected by flange connection.

Preferably, the internal diameter of the inner chamber of first diameter changing nipple is gradual change type, and the first diameter changing nipple is near adjustable section The diameter of stream positive choke one end is minimum.

Preferably, along its length heap is welded with the carbonization of YG8 hard alloys to the interior intracavity of the gradual change type of the diameter changing nipple Tungsten material layer.

Preferably, the hard alloy tungsten carbide material thickness degree is 3.5mm.

Preferably, it is detachably connected between the adjustable throttling positive choke and the first diameter changing nipple.

Preferably, choke manifold integrally long 2645mm, wide 1550mm, high 620mm.

Preferably, above-mentioned pipeline select 2-9/16 " pipeline, pressure-bearing 35MPa, pipeline latus rectum is 65mm.

Preferably, flange is 2-7/8, and " flange of EUE R27 standards 350, supporting bolt is M27 × 3 × 175 stud.

Compared with prior art, the beneficial effects of the utility model：

1st, this utility model be provided with choke manifold can the adjustable throttling positive choke that adjusts of real time bidirectional, can Mode throttling positive choke downstream is provided with diameter changing nipple, and it is short to be equally provided with reducing in manual needle-like formula choke valve downstream Section, by switching different manual platform gate valves, needle-valve the precise control realized to oil pipe, casing pressure is combined, and is reduced The row's of returning load fluid to oil nozzle, pipe nipple, gate valve erosion, improve surface throttling efficiency.

2nd, adjustable throttling positive choke is easy to use, and abrasion-resistance is good, it is not necessary to change oil nozzle, aperture adjustment scope Extensively, diameter changing nipple changes convenient, with good erosive wear resistance, not only increases the reducing pressure by regulating flow effect of choke manifold, also The replacement cost of manifold consumable accessory has been saved, the labor intensity of site operation personnel has been reduced, the use of choke manifold has been extended It is life-span, practical, effect is significant, it is adaptable to open flow operation after well fracturing.

Description of the drawings

Fig. 1 is the structural representation of the choke manifold with adjustable throttling positive choke.

Enlarged drawing in Fig. 2 Fig. 1 at A.

In figure：1- the first pipeline four-ways；2- first manual flat gate valves；The adjustable throttling positive chokes of 3-；4- first becomes Footpath pipe nipple；The first pipelines of 5- five lead to；The manual flat gate valves of 6- second；7- the second pipeline four-ways；The diameter changing nipples of 8- second；9- is manual Needle-like formula choke valve；The manual platform gate valves of 10- the 3rd；The second pipelines of 11- five lead to；The manual platform gate valves of 12- the 4th；13- the 5th Manual platform gate valve；14- flow regulation handles；15- connecting rods；16- apertures graduated disc；17- Flow-rate adjustment power transmission shafts；18- flows Amount controller；19- oil nozzle seats；20- valve seats；21- vertical passages；22- interconnections；23- pins；24- bearings；25- manifold sets It is put into mouth；26- first pipe remittance abroad mouths；27- second pipe remittance abroad mouths；28- manifold oil is put into mouth.

Specific embodiment

This utility model is described in further details below in conjunction with specific embodiment.

Embodiment 1

As shown in figure 1, the utility model proposes a kind of choke manifold with adjustable throttling positive choke, being adapted to should For in open flow operation after well fracturing.

The choke manifold includes the first pipeline four-way 1, and there is the first pipeline four-way 1 a manifold set to be put into mouth 25, institute State manifold set and be put into the connection wellhead casing pipe gate valve of mouth 25, a wherein mouth of pipe of the first pipeline four-way 1 is connected successively by pipeline Connect first manual flat gate valve 2, an adjustable throttling positive choke 3, the first diameter changing nipple 4, the first pipeline five logical 5, described the One pipeline five logical 5 has a first pipe remittance abroad mouth 26, the external relief line of first pipe remittance abroad mouth 26, first pipeline five logical 5 A wherein mouth of pipe the second manual flat gate valve 6 and the second pipeline four-way 7 are sequentially connected by pipeline, the second pipeline four-way 7 has There is a second pipe remittance abroad mouth 27, the external relief line of second pipe remittance abroad mouth 27, a wherein mouth of pipe of the second pipeline four-way 7 connects successively Connect the second diameter changing nipple 8, manual needle-like formula choke valve 9, the 3rd manual platform gate valve 10, the second pipeline five logical 11, the second pipeline Five logical 11 there is a manifold oil to be put into mouth 28, and the manifold oil is put into the connection well mouth oil pipe gate valve of mouth 28, the second pipeline five logical 11 A wherein mouth of pipe the 4th manual platform gate valve 12 and the first pipeline four-way 1 are sequentially connected by pipeline；Second pipeline five logical 11 Another mouth of pipe the 5th manual platform gate valve 13 and the first pipeline five logical 5 are sequentially connected by pipeline.

Wherein, logical 5, second pipeline five logical 11 of the first pipeline four-way 1, the second pipeline four-way 7, the first pipeline five, the One manual flat gate valve 2, the second manual flat gate valve 6, the 3rd manual platform gate valve 10, the 4th manual platform gate valve the 12, the 5th Manual platform gate valve 13, the first diameter changing nipple 4, the second diameter changing nipple 8 and manual needle-like formula choke valve 9 are selected on market There is part, here is not described in detail.

The course of work of choke manifold of the present utility model is：

First, the manifold set at the first pipeline four-way 1 is put into into mouth 25 to be attached with wellhead casing pipe gate valve；By second pipe Manifold oil at Lu Wutong 11 is put into mouth 28 and is attached with well mouth oil pipe gate valve；First pipe remittance abroad at first pipeline five logical 5 The connection relief lines of mouth 26 (herein relief line is high-pressure hose or hard pipeline, and hard flexible pipe is to liquids recovery), second Second pipe remittance abroad mouth 27 at pipeline four-way 7 is attached with hard relief line.

After the completion of above-mentioned connection, according to Oil/gas Well open flow flow and well head oil, set Stress control needs, adjustable section is adjusted Stream positive choke 3 is determined in certain throttle diameter numerical value, then is installing the first diameter changing nipple 4 downstream, equally in manual pin The downstream of pattern choke valve 9 is installed by the second diameter changing nipple 8.

During sleeve pipe open flow, turn off well mouth oil pipe gate valve, open first manual flat gate valve 2, close the 4th manual platform lock Valve 12, the 5th manual platform gate valve 13, the second manual flat gate valve 6, can carry out throttling precise control to casing pressure；If sleeve pipe Hypertonia, can open the 4th manual platform gate valve 12, the 5th manual platform gate valve 13, close the 3rd manual platform gate valve 10, Set tapping body flows out from the first pipe remittance abroad mouth 26 of the first pipeline five logical 5, discharges a part of fluid pressure.

During oil pipe open flow, turn off wellhead casing pipe gate valve, open the 4th manual platform gate valve 12, the 3rd manual platform gate valve 10th, the second manual flat gate valve 6, first manual flat gate valve 2 and manual needle-like formula choke valve 9, close the 5th manual platform Gate valve 13, can carry out throttling precise control to tubing pressure；If oil puts hypertonia, the 5th manual platform gate valve 13 can be opened, Oily tapping body flows out from the second pipe remittance abroad mouth 27 of logical 5, the second pipeline four-way 7 of the first pipeline five, discharges a part of fluid pressure.

After open flow terminates, closed-in well muzzle sluice valve and oil pipe gate valve, each zero of the choke manifold of dismounting cleaning in time Part, maintenance or replacing parts etc., so as to open flow operation again.

The choke manifold is put into mouth 25, manifold oil and is put into mouth 28, first pipe remittance abroad mouth 26, second pipe remittance abroad by manifold set Mouth 27 constitutes Two In and Two Out structures, and side is controlled using adjustable throttling positive choke 3, and opposite side is throttled using manual needle-like formula Valve 9 is controlled, middle in line, and adjustable throttling positive choke 3 and the manual downstream of needle-like formula choke valve 9 are mounted on diameter changing nipple, Oil pipe, sleeve pipe during open flow after be turned on and off different manual platform gate valves, needle-valve compound mode to control pressure break Pressure.

This utility model is as a result of adjustable throttling positive choke 3, and adjustable throttling positive choke 3 is easy to use, Abrasion-resistance is good, it is not necessary to change oil nozzle, and aperture adjustment scope is wide, and diameter changing nipple changes convenient, with good abrasion-resistance Can, reduce open flow load fluid to oil nozzle, pipe nipple, gate valve erosion, significantly reduce the labor intensity of site operation personnel, Saved throttling the open flow time and change oil nozzle, the cost of pipe nipple, significantly improve whole choke manifold reducing pressure by regulating flow effect, Abrasion-resistance and service life, the suitability is wide, practical, and application effect significantly, is suitably applied open flow after well fracturing Operation.

Embodiment 2

On the basis of embodiment 1, as shown in Fig. 2 the adjustable throttling positive choke 3 includes flow regulation handle 14th, connecting rod 15, aperture graduated disc 16, Flow-rate adjustment power transmission shaft 17, flow controller 18, oil nozzle seat 19, valve seat 20, the valve Seat is provided with a vertical passage 21 in 20 bottoms, and the side wall of valve seat 20 is provided with an interconnection 22 being connected with vertical passage 21, The inside of the vertical passage 21 is equipped with oil nozzle seat 19, and oil nozzle seat 19 is provided with scale value, the bottom of aperture graduated disc 16 insertion Vertical passage 21 inside valve seat 20, the upper surface of aperture graduated disc 16 is provided with the scale corresponding with the scale in oil nozzle seat 19, And hole is equipped with each scale of aperture graduated disc upper surface, it is sequentially arranged with Flow-rate adjustment inside aperture graduated disc 16 from top to bottom Power transmission shaft 17 and flow controller 18, the upper end of Flow-rate adjustment power transmission shaft 17 is connected with flow regulation handle by connecting rod 15 14, the lower end of the flow regulation handle 14 is connected with pin 23, and pin 23 and is connected to the upper end of aperture scale 16 with inserted mode Fluid passage is equipped with inside the hole in face, the flow controller 18 and oil nozzle seat 19, oil nozzle seat 19 is located at flow controller 18 The fluid passage of lower end, flow controller 18 and oil nozzle seat 19 can form a passage, and the size of the passage with flow control The rotation of device processed 18 and change.

The inside of the aperture graduated disc 16 is hollow channel, and hollow channel top is provided with bearing 24, and bearing 24 is placed on stream Amount adjusts the outside of power transmission shaft 17.

This utility model is integrated by oil nozzle and seat design by adjustable oil nozzle, using " flow regulation handle 14 drives The aperture of oil nozzle 3 is carried out real time bidirectional regulation by dynamic+aperture graduated disc 16 " mode to adjustable oil nozzle, can be from big oil nozzle hole Directly go to little oil nozzle aperture to adjust, it is also possible to adjust toward big oil nozzle aperture from little oil nozzle aperture, realize oil nozzle real time bidirectional and accurately throttle The purpose of blood pressure lowering, and the adjustable oil nozzle is simple by the structure design of oil nozzle 3, it is not necessary to change oil nozzle, mechanical real time bidirectional Adjust, aperture adjustment scope is big, and easy to use, long service life, wide adaptability is practical, and application effect is notable.

Jing test measure, adjustable oil nozzle by the aperture of oil nozzle 3 from 3～25mm can real time bidirectional adjust, without the need for changing oil nozzle； Chock pressure difference can carry out real-time regulation between 0.1～45MPa, with design pressure error in the range of ± 0.3MPa.

Embodiment 3

On the basis of embodiment 2, the flow controller 8 and oil nozzle seat 9 adopt erosion resistance hard alloy tungsten carbide YG8 Material, high-abrasive material makes positive choke have very high abrasion-resistance.

Embodiment 4

On the basis of embodiment 1, as described in Figure 1, the internal diameter of the inner chamber of first diameter changing nipple 4 is gradual change type, the Diameter of one diameter changing nipple 4 near adjustable throttling positive choke 3 one end is minimum.Using the internal structure of the first diameter changing nipple 4 Change so as to flow velocity and pressure when the fluid for returning out from the adjustable throttling port of export of positive choke 3 flows through first diameter changing nipple 4 Power is steadily reduced, and pressure drop slowly reduces, and effectively prevents the entrance point erosion of the first diameter changing nipple 4.

Along its length heap is welded with YG8 hard alloy tungsten carbides to the interior intracavity of the gradual change type of first diameter changing nipple 4 Material layer, YG8 hard alloy tungsten carbide material thickness degree is 3.5mm, and hardness HRC92～95 are respectively provided with higher abrasion-resistance Energy.

Embodiment 5

On the basis of embodiment 1, the adjustable throttling positive choke 3 is detachably connected with the first diameter changing nipple 4, can The mode of dismounting connection can be bolt connection, and threaded connection or clamping etc., from this dismountable connected mode, are being put After spray terminates, can in time dismantle, reducing nozzle tip be maintained or change, so as to open flow operation again.

Embodiment 6

On the basis of embodiment 1, choke manifold integrally long 2645mm, wide 1550mm, high 620mm.

The pipeline select 2-9/16 " pipeline, pressure-bearing 35MPa, pipeline latus rectum is 65mm.

The connected mode of above-mentioned choke manifold is：All in manifold to be connected by flange connection, flange is 2-7/8 " EUE The flange of R27 standards 350, supporting bolt is M27 × 3 × 175 stud.

Exemplified as above is only, to illustration of the present utility model, not constitute to protection domain of the present utility model Limit, every design same or analogous with this utility model is belonged within protection domain of the present utility model.

Claims (8)

1. it is a kind of with it is adjustable throttling positive choke choke manifold, it is characterised in that：Including the first pipeline four-way (1), institute State the first pipeline four-way (1) and be put into mouth (25) with a manifold set, the manifold set is put into mouth (25) connection wellhead casing pipe gate valve, A wherein mouth of pipe of the first pipeline four-way (1) is sequentially connected first manual flat gate valve (2), an adjustable section by pipeline Stream positive choke (3), the first diameter changing nipple (4), the first pipeline five logical (5), first pipeline five logical (5) is with a first pipe Remittance abroad mouth (26), the external relief line of first pipe remittance abroad mouth (26), a wherein mouth of pipe of first pipeline five logical (5) is by pipe Road is sequentially connected the second manual flat gate valve (6) and the second pipeline four-way (7), and the second pipeline four-way (7) is with one second manifold Outlet (27), the external relief line of second pipe remittance abroad mouth (27), a wherein mouth of pipe of the second pipeline four-way (7) is sequentially connected second Diameter changing nipple (8), manual needle-like formula choke valve (9), the 3rd manual platform gate valve (10), the second pipeline five logical (11), second pipe Lu Wutong (11) is put into mouth (28) with a manifold oil, and the manifold oil is put into mouth (28) connection well mouth oil pipe gate valve, second pipe A wherein mouth of pipe of Lu Wutong (11) is sequentially connected the 4th manual platform gate valve (12) and the first pipeline four-way (1) by pipeline； Another mouth of pipe of the second pipeline five logical (11) is sequentially connected the 5th manual platform gate valve (13) by pipeline and the first pipeline five leads to (5)；It is all in choke manifold to be connected by flange connection.

2. as claimed in claim 1 with the choke manifold of adjustable throttling positive choke, it is characterised in that：Described first becomes The internal diameter of the inner chamber of footpath pipe nipple (4) is gradual change type, and the first diameter changing nipple (4) is near adjustable throttling positive choke (3) one end Diameter is minimum.

3. as claimed in claim 2 with the choke manifold of adjustable throttling positive choke, it is characterised in that：Described first becomes Along its length heap is welded with YG8 hard alloy tungsten carbide material layers to the interior intracavity of the gradual change type of footpath pipe nipple (4).

4. as claimed in claim 3 with the choke manifold of adjustable throttling positive choke, it is characterised in that：The hard is closed Golden tungsten carbide material thickness degree is 3.5mm.

5. as claimed in claim 1 with the choke manifold of adjustable throttling positive choke, it is characterised in that：It is described adjustable It is detachably connected between throttling positive choke (3) and first diameter changing nipple (4).

6. as claimed in claim 1 with the choke manifold of adjustable throttling positive choke, it is characterised in that：Choke manifold is whole The long 2645mm of body, wide 1550mm, high 620mm.

7. as claimed in claim 1 with the choke manifold of adjustable throttling positive choke, it is characterised in that：Above-mentioned pipeline is equal From 2-9/16 " pipeline, pressure-bearing 35MPa, pipeline latus rectum is 65mm.

8. as claimed in claim 1 with the choke manifold of adjustable throttling positive choke, it is characterised in that：Flange is 2-7/ 8 " flange of EUE R27 standards 350, supporting bolt is M27 × 3 × 175 stud.