CN217129506U - A fracturing well head device for acidizing, add sand - Google Patents

Abstract

The utility model belongs to the technical field of the fracturing well head, a fracturing well head device for acidizing, add sand, including fracturing well head body, be equipped with a plurality of trunk lines and secondary pipeline on the fracturing well head body, be equipped with the fracturing cross-joint on the fracturing well head body, the horizontal through-hole of fracturing cross-joint all be linked together with filtering mechanism, upper portion through-hole and trunk line intercommunication, fracturing well head body lower extreme is fixed with solid fixed ring, gu fixed ring has fracturing well head seat, the lower through-hole and the fracturing well head seat of fracturing cross-joint are connected, gu fixed ring can dismantle fixed connection through fixed establishment and fracturing well head seat, be equipped with main latus rectum gate valve on the trunk line, be equipped with parallel gate valve on the secondary pipeline. The utility model discloses a filter equipment filters the solid particle in the fracturing fluid, can effectually prevent that the solid particle thing in the fracturing fluid from getting into non-fracturing passageway and gate valve, has played fine guard action to the gate valve and even whole fracturing well head device, life-span that can effectual extension its use.

Description

A fracturing well head device for acidizing, add sand

Technical Field

The utility model relates to a fracturing well head field specifically says a fracturing well head device for acidizing, add sand.

Background

With the development of conventional oil and gas resources in China entering the middle and later stages, the development of new oil and gas resources is imminent, and the development and exploitation of shale gas (oil) are particularly important. Shale gas exploitation is different from conventional exploitation, and the main means of shale gas exploitation is to perform large-scale fracturing construction, which puts higher requirements on a wellhead device. In the actual production process of an oil field, a wellhead with low formation pore space, low permeability and low yield is usually acidized or fractured by an acidizing and fracturing wellhead device to improve the yield. Sometimes, the yield of the fractured well mouth is not high due to poor connectivity of cracks in the stratum, and the sand needs to be added to the well mouth again to improve the connectivity in the stratum, so that the yield is improved.

In the process of fracturing wellhead assembly work gathers, fracturing fluid need be got rid of through the constant delivery pump high pressure of fracturing truck, concentrate through the fracturing manifold and pour into fracturing wellhead assembly, nevertheless contain a large amount of sands in the fracturing fluid, the solid particle as the proppant, the fluid medium of high flow has very strong erosion ability to wellhead assembly inner wall, and, in case it gets into the gate valve, because the particularity of gate valve structure, it not only has the inner wall of partial sand deposit at the gate valve, also has the inside that partial granule got into the gate valve, long-term working process like this, will cause certain damage to the gate valve, serious influence gate valve and even whole fracturing wellhead assembly's life, and current fracturing wellhead assembly installation is comparatively complicated, it is comparatively inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fracturing well head device for acidizing, add sand to solve the problem that provides among the above-mentioned background art.

The technical scheme of the utility model is that: a fracturing wellhead device for acidification and sand adding comprises a fracturing wellhead body, wherein a plurality of main pipelines and secondary pipelines are arranged on the fracturing wellhead body, a fracturing cross joint is arranged on the fracturing wellhead body, transverse through holes of the fracturing cross joint are communicated with a filtering mechanism, an upper through hole is communicated with the main pipelines, a fixing ring is fixed at the lower end of the fracturing wellhead body, a fracturing wellhead seat is arranged below the fixing ring, a lower through hole of the fracturing cross joint is connected with the fracturing wellhead seat, the fixing ring is detachably and fixedly connected with the fracturing wellhead seat through a fixing mechanism, a main drift diameter gate valve is arranged on the main pipeline, a parallel gate valve is arranged on the secondary pipeline, the other end of the filtering mechanism is communicated with the secondary pipeline, and the filtering mechanism is arranged at each transverse through hole of the fracturing cross joint and an inlet of the parallel gate valve, and a back-flushing mechanism is arranged in the filtering mechanism.

Further, fixed establishment is including fixed block, spacing groove, restriction groove, fixed slot, gag lever post and bounce-back ware, gu fixed ring's bottom evenly is fixed with a plurality of fixed block, seted up on the fracturing wellhead seat a plurality of with the fixed slot that the fixed block is relative, seted up on the fixed block and supplied the gliding restriction groove of gag lever post, seted up on the fracturing wellhead seat a plurality of with the restriction groove is relative and can hold the spacing groove of gag lever post, the spacing inslot is fixed with the bounce-back ware, the outer wall of fixed block with the fixed slot agrees with mutually, gu fixed ring with when fracturing wellhead seat uses fixed establishment to be fixed, still use a plurality of bolt to strengthen fixedly.

Furthermore, filtering mechanism is including first electromagnetism angle valve, second electromagnetism angle valve, connecting tube, first filter tube, second filter tube, first filter, second filter and filter screen, the one end of first filter tube and second filter tube with inferior pipeline is linked together, inferior pipeline with the intercommunication department of first filter tube and second filter tube is equipped with first electromagnetism angle valve, the other end of first filter tube and second filter tube with connecting tube's one end is linked together, connecting tube's the other end with the fracturing cross-joint is linked together, connecting tube and the intercommunication department of first filter tube and second filter tube are equipped with second electromagnetism angle valve, be equipped with first filter and second filter on first filter tube and the second filter tube respectively, first filter with all be equipped with the filter screen in the second filter.

Further, the backflushing mechanism comprises a third electromagnetic angle valve, a water pipeline, a high-pressure nozzle, a cleaning pipeline, a first drain pipe, a second drain pipe, a first electromagnetic valve and a second electromagnetic valve, wherein the high-pressure nozzle is arranged in the water pipeline, one end of the water pipeline is communicated with a water source, the other end of the water pipeline is communicated with the middle section of the cleaning pipeline, the third electromagnetic angle valve is arranged at the communication position of the water pipeline and the cleaning pipeline, two ends of the cleaning pipeline are respectively communicated with the first filtering pipe and the second filtering pipe, the cleaning pipeline is positioned between the first filter, the second filter and the connecting pipeline, a first drain pipe and a second drain pipe are respectively arranged between the secondary pipeline and the first filter and the second filter and at one end close to the first filter and the second filter, and the first drain pipe and the second drain pipe are respectively communicated with the first filtering pipe and the second filtering pipe, and the first sewage discharge pipe and the second sewage discharge pipe are respectively provided with a first electromagnetic valve and a second electromagnetic valve.

Furthermore, the filter screens in the first filter and the second filter are both double-layer filter screens, and the filter screens are corrosion-resistant metal filter screens.

Furthermore, the first filter and the second filter are provided with sealing rings at the communication positions of the first filtering pipe and the second filtering pipe.

The utility model discloses an improve and provide a fracturing well head device that is used for acidizing, adds sand here, compare with prior art, have following improvement and advantage:

one is as follows: the utility model discloses a filter equipment filters the solid particle in the fracturing fluid, can effectually prevent that the solid particle thing in the fracturing fluid from getting into in non-fracturing passageway and the gate valve, to the gate valve and even whole fracturing wellhead assembly played fine guard action, life-span that can its use of effectual extension, fine solution solid particle thing to the gate valve and even whole fracturing wellhead assembly brought a great deal of problem to let the demand of satisfying the production that this fracturing wellhead assembly can be better.

The second step is as follows: the utility model discloses use two filter circuit cooperations to use, can guarantee that the circulation of fracturing fluid does not stop, improved work efficiency.

And thirdly: the utility model discloses use recoil mechanism, the solid particle who blocks up in to the filter through the water pipeline is recoil clearance, has made things convenient for user's use.

Fourthly, the method comprises the following steps: the utility model discloses use fixed establishment, it is more convenient to make the installation of fracturing well head fixed, makes the fracturing well head device fixed more stable simultaneously.

Drawings

The invention is further explained below with reference to the figures and examples:

fig. 1 is a front view of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a top view of the filtering mechanism of the present invention;

FIG. 4 is a schematic perspective view of the filter screen of the present invention;

fig. 5 is an exploded view of the fixing mechanism of the present invention;

fig. 6 is an enlarged view of fig. 1 at a.

Description of reference numerals:

1. fracturing the cross joint; 2. a main drift diameter gate valve; 3. a parallel gate valve; 4. a secondary pipeline; 5. a main pipeline; 6. a first electromagnetic angle valve; 7. a second electromagnetic angle valve; 8. a third solenoid angle valve; 9. a water pipeline; 10. a high pressure spray head; 11. connecting a pipeline; 12. a first drain pipe; 13. a second sewage draining pipe; 14. a first filtering pipe; 15. a second filtering pipe; 16. a second filter; 17. a first filter; 18. a filter screen; 19. cleaning the pipeline; 20. a second solenoid valve; 21. a first solenoid valve; 22. fracturing a wellhead body; 23. fracturing a wellhead seat; 24. a fixing ring; 25. a fixed block; 26. a limiting groove; 27. fixing grooves; 28. a limiting rod; 29. a limiting groove; 30. a rebounder.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings 1 to 1, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a fracturing well head device for acidification and sand addition through the improvement, as shown in figure 1-figure, comprising a fracturing well head body 22, wherein a plurality of main pipelines 5 and secondary pipelines 4 are arranged on the fracturing well head body 22, a fracturing cross 1 is arranged on the fracturing well head body 22, the transverse through holes of the fracturing cross 1 are communicated with a filtering mechanism, the upper through hole is communicated with the main pipelines 5, the lower end of the fracturing well head body is fixed with a fixing ring 24, a fracturing well head seat 23 is arranged below the fixing ring 24, the lower through hole of the fracturing cross is connected with the fracturing well head seat 23, the fixing ring 24 is detachably and fixedly connected with the fracturing well head seat 23 through a fixing mechanism, a main drift diameter gate valve 2 is arranged on the main pipeline 5, a parallel gate valve 3 is arranged on the secondary pipeline 4, and the other end of the filtering mechanism is communicated with the secondary pipeline 4, the filtering mechanism is arranged at each transverse through hole of the fracturing cross joint 1 and at the inlet of the parallel gate valve 3, and a back flushing mechanism is arranged in the filtering mechanism.

Fixing mechanism is including fixed block 25, spacing groove 29, restriction groove 26, fixed slot 27, gag lever post 28 and bounce-back ware 30, fixed ring 24's bottom evenly is fixed with a plurality of fixed block 25, seted up on the fracturing wellhead seat 23 a plurality of with fixed slot 27 that fixed block 25 is relative, the confession has been seted up on the fixed block 25 the gliding restriction groove 26 of gag lever post 28, seted up on the fracturing wellhead seat 23 a plurality of with restriction groove 26 is relative and can hold the spacing groove 29 of gag lever post 28, spacing inslot 29 internal fixation has bounce-back ware 30, the outer wall of fixed block 25 with fixed slot 27 agrees with mutually, fixed ring 24 with when fracturing wellhead seat 23 uses fixing mechanism fixed, still uses a plurality of bolt to strengthen fixedly. Carry out dual fixed through fixed establishment and bolt, make fracturing well head work more stable, the bounce-back ware 30 of description is beetle bounce-back ware 30, is a prior art, has and can press the stopper rod 28 and fix and the beetle bounce-back ware 30 that pops out all can use here.

Specifically, the filtering mechanism comprises a first electromagnetic angle valve 6, a second electromagnetic angle valve 7, a connecting pipeline 11, a first filtering pipe 14, a second filtering pipe 15, a first filter 17, a second filter 16 and a filter screen 18, wherein one end of each of the first filtering pipe 14 and the second filtering pipe 15 is communicated with the secondary pipeline 4, the first electromagnetic angle valve 6 is arranged at the communication position of the secondary pipeline 4 and the first filtering pipe 14, the second filtering pipe 15, the other end of the first filtering pipe 14, the other end of the second filtering pipe 15, the other end of the connecting pipeline 11, the fracturing four-way joint 1, the second electromagnetic angle valve 7 is arranged at the communication position of the connecting pipeline 11, the first filtering pipe 14 and the second filtering pipe 15, the first filter 17 and the second filter 16 are respectively arranged on the first filtering pipe 14 and the second filtering pipe 15, a filter screen 18 is arranged in each of the first filter 17 and the second filter 16. Solid particles in the fracturing fluid are filtered through the filtering device, so that solid particles in the fracturing fluid can be effectively prevented from entering a non-fracturing channel and a gate valve, the gate valve and even the whole fracturing wellhead device are well protected, and the service life of the fracturing wellhead device can be effectively prolonged.

Specifically, the backflushing mechanism comprises a third electromagnetic angle valve 8, a water pipeline 9, a high-pressure spray head 10, a cleaning pipeline 19, a first sewage discharge pipe 12, a second sewage discharge pipe 13, a first electromagnetic valve 21 and a second electromagnetic valve 20, the high-pressure spray head 10 is arranged in the water pipeline 9, one end of the water pipeline 9 is communicated with a water source, the other end of the water pipeline 9 is communicated with the middle section of the cleaning pipeline 19, the third electromagnetic angle valve 8 is arranged at the communication position of the water pipeline 9 and the cleaning pipeline 19, two ends of the cleaning pipeline 19 are respectively communicated with the first filtering pipe 14 and the second filtering pipe 15, the cleaning pipeline 19 is positioned between the first filter 17, the second filter 16 and the connecting pipeline 11, one end of the secondary pipeline 4, between the first filter 17 and the second filter 16, and close to the first filter 17 and the second filter 16 is respectively provided with the first sewage discharge pipe 12 and the second sewage discharge pipe 13, and the first sewage draining pipe 12 and the second sewage draining pipe 13 are respectively communicated with the first filtering pipe 14 and the second filtering pipe 15, and the first sewage draining pipe 12 and the second sewage draining pipe 13 are respectively provided with a first electromagnetic valve 21 and a second electromagnetic valve 20. The backflushing mechanism is used for backflushing and cleaning solid particles blocked in the filter through the water pipeline 9, so that the use of a user is facilitated.

Specifically, the filter screens 18 in the first filter 17 and the second filter 16 are both double-layer filter screens, and the filter screens 18 are corrosion-resistant metal filter screens. Through the double-layer filter screen 18, the filtering effect is ensured, and the corrosion of acid liquor to the filter screen can be reduced by using the corrosion-resistant metal filter screen 18.

Specifically, the connection between the first filter 17 and the second filter 16 and the connection between the first filter pipe 14 and the second filter pipe 15 are provided with sealing rings. Through setting up the sealing washer, when realizing filterable effect, also improved its sealing performance, avoided solid particle to get into from the edge.

The working principle is as follows: firstly, assuming that a worker fixedly installs the fracturing wellhead body 22, fixing blocks 25 on a fixing ring 24 are opposite to fixing grooves 27 formed in a fracturing wellhead seat 23 one by one, then the fixing blocks 25 are embedded into the fixing grooves 27, so that the fixing ring 24 is tightly attached to the fracturing wellhead seat 23, a limiting rod 28 is inserted into a limiting groove 29, the limiting rod 28 is limited in the limiting groove 29 through a rebound device 30, meanwhile, the fixing blocks 25 are fixed in the fixing grooves 27 through limiting grooves 26 by the limiting rod 28, and the fixing ring 24 and the fracturing wellhead seat 23 are reinforced and fixed through bolts;

then, when the fracturing wellhead works, fracturing fluid with solid particles enters the filtering mechanism from the secondary pipeline 4, enters the first filtering pipe 14 from the first electromagnetic angle valve 6, enters the connecting pipeline 11 through the second electromagnetic angle valve 7 after being filtered by the filtering net 18 in the first filter 17, finally flows into the main fracturing four-way valve 1, after the equipment works for a period of time, the first electromagnetic angle valve 6 and the second electromagnetic angle valve 7 work, the fracturing fluid enters the connecting pipeline 11 from the first filtering pipe 14 instead of the second filtering pipe 15, enters the connecting pipeline 11 after being filtered by the second filter 16, the high-pressure spray head 10 enables high-pressure water flow to enter the cleaning pipeline 19 from the water pipeline 9 and then enter the first filtering pipe 14 while the first electromagnetic angle valve 6 and the second electromagnetic angle valve 7 work to change the flowing pipeline of the fracturing fluid, the third electromagnetic angle valve 8 and the first electromagnetic valve 21 are opened, and the high-pressure spray head 10 enables the high-pressure water flow to enter the first filtering pipe 14, the solid particles in the first filter 17 are backflushed to be discharged through the first sewage discharge pipe 12, the first electromagnetic valve 21, the third electromagnetic angle valve 8 and the high-pressure spray head 10 are closed after a period of time, the first electromagnetic angle valve 6 and the second electromagnetic angle valve 7 work after the equipment works for a period of time again, the fracturing fluid enters from the second filter pipe 15 instead of the first filter pipe 14, the fracturing fluid enters through the first filter 17 and then enters the connecting pipeline 11, the third electromagnetic angle valve 8 and the second electromagnetic valve 20 are opened while the flowing pipeline of the fracturing fluid is changed again when the first electromagnetic angle valve 6 and the second electromagnetic angle valve 7 work, the high-pressure spray head 10 enables the high-pressure water flow to enter the cleaning pipeline 19 from the water flowing pipeline 9 and then enters the second filter pipe 15, the solid particles in the second filter 16 are backflushed to be discharged through the second sewage discharge pipe 13, after a period of time, the second electromagnetic valve 20, the third electromagnetic angle valve 8 and the high-pressure spray head 10 are closed, and a filtering process is completed.

Finally, when needs are dismantled fracturing well head body 22, press gag lever post 28 to the spacing inslot 29, under the effect of bounce-back ware 30, gag lever post 28 pops out spacing groove 29, and the staff extracts gag lever post 28 again, simultaneously, takes out the bolt from solid fixed ring 24, can take off fracturing well head device from fracturing well head seat 23 at this moment, accomplishes the dismantlement.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. The utility model provides a fracturing well head device for acidizing, add sand which characterized in that: comprises a fracturing well head body (22), a plurality of main pipelines (5) and secondary pipelines (4) are arranged on the fracturing well head body (22), a fracturing four-way (1) is arranged on the fracturing well head body (22), transverse through holes of the fracturing four-way (1) are communicated with a filtering mechanism, upper through holes are communicated with the main pipelines (5), a fixing ring (24) is fixed at the lower end of the fracturing well head body, a fracturing well head seat (23) is arranged under the fixing ring (24), a lower through hole of the fracturing four-way is connected with the fracturing well head seat (23), the fixing ring (24) is detachably and fixedly connected with the fracturing well head seat (23) through a fixing mechanism, a main drift diameter gate valve (2) is arranged on the main pipeline (5), a parallel gate valve (3) is arranged on the secondary pipeline (4), and the other end of the filtering mechanism is communicated with the secondary pipeline (4), the filtering mechanism is arranged at each transverse through hole of the fracturing four-way joint (1) and at the inlet of the parallel gate valve (3), and a backflushing mechanism is arranged in the filtering mechanism.

2. A frac wellhead for acidizing and sanding according to claim 1 wherein: the fixing mechanism comprises a fixing block (25), a limiting groove (29), a limiting groove (26), a fixing groove (27), a limiting rod (28) and a rebounding device (30), wherein the bottom of the fixing ring (24) is uniformly fixed with a plurality of fixing blocks (25), the fracturing wellhead seat (23) is provided with a plurality of fixing grooves (27) opposite to the fixing blocks (25), the fixing blocks (25) are provided with limiting grooves (26) for the limiting rod (28) to slide, the fracturing wellhead seat (23) is provided with a plurality of limiting grooves (29) opposite to the limiting grooves (26) and capable of containing the limiting rods (28), the rebounding device (30) is fixed in the limiting grooves (29), the outer wall of the fixing blocks (25) is matched with the fixing grooves (27), and the fixing ring (24) and the fracturing wellhead seat (23) are fixed by the fixing mechanism, a plurality of bolts are also used for strengthening and fixing.

3. A frac wellhead for acidizing and sanding according to claim 1 wherein: the filtering mechanism comprises a first electromagnetic angle valve (6), a second electromagnetic angle valve (7), a connecting pipeline (11), a first filtering pipe (14), a second filtering pipe (15), a first filter (17), a second filter (16) and a filter screen (18), one end of the first filtering pipe (14) and one end of the second filtering pipe (15) are communicated with the secondary pipeline (4), the communicating part of the secondary pipeline (4) and the first filtering pipe (14) and the second filtering pipe (15) is provided with the first electromagnetic angle valve (6), the other end of the first filtering pipe (14) and the other end of the second filtering pipe (15) are communicated with one end of the connecting pipeline (11), the other end of the connecting pipeline (11) is communicated with the fracturing four-way joint (1), the communicating part of the connecting pipeline (11) and the first filtering pipe (14) and the second filtering pipe (15) is provided with the second electromagnetic angle valve (7), the first filter pipe (14) and the second filter pipe (15) are respectively provided with a first filter (17) and a second filter (16), and filter screens (18) are arranged in the first filter (17) and the second filter (16).

4. A frac wellhead for acidizing and sanding according to claim 3 wherein: the backflushing mechanism comprises a third electromagnetic angle valve (8), a water pipeline (9), a high-pressure spray head (10), a cleaning pipeline (19), a first sewage discharge pipe (12), a second sewage discharge pipe (13), a first electromagnetic valve (21) and a second electromagnetic valve (20), wherein the high-pressure spray head (10) is arranged in the water pipeline (9), one end of the water pipeline (9) is communicated with a water source, the other end of the water pipeline (9) is communicated with the middle section of the cleaning pipeline (19), the communication position of the water pipeline (9) and the cleaning pipeline (19) is provided with the third electromagnetic angle valve (8), two ends of the cleaning pipeline (19) are respectively communicated with the first filter pipe (14) and the second filter pipe (15), and the cleaning pipeline (19) is positioned between the first filter (17), the second filter (16) and the connecting pipeline (11), inferior pipeline (4) with between first filter (17) and second filter (16) and be close to first filter (17) and second filter (16) one end be equipped with first blow off pipe (12) and second blow off pipe (13) respectively, and first blow off pipe (12) and second blow off pipe (13) are linked together with first filter tube (14) and second filter tube (15) respectively, respectively be equipped with first solenoid valve (21) and second solenoid valve (20) on first blow off pipe (12) and second blow off pipe (13) respectively.

5. A frac wellhead for acidizing and sanding according to claim 3 wherein: the filter screens (18) in the first filter (17) and the second filter (16) are double-layer filter screens, and the filter screens (18) are corrosion-resistant metal filter screens.

6. A frac wellhead for acidizing and sanding according to claim 3 wherein: and sealing rings are arranged at the communication positions of the first filter (17) and the second filter (16) and the first filter pipe (14) and the second filter pipe (15).

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