CN105507866A - Fracturing wellhead device - Google Patents
Fracturing wellhead device Download PDFInfo
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- CN105507866A CN105507866A CN201410494251.XA CN201410494251A CN105507866A CN 105507866 A CN105507866 A CN 105507866A CN 201410494251 A CN201410494251 A CN 201410494251A CN 105507866 A CN105507866 A CN 105507866A
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- 238000012806 monitoring device Methods 0.000 claims abstract description 18
- 241000254175 Anthonomus grandis Species 0.000 claims description 51
- 238000007789 sealing Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 13
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 4
- 239000011494 foam glass Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 15
- 238000012544 monitoring process Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
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- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000011241 protective layer Substances 0.000 abstract 1
- 238000004781 supercooling Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 5
- 208000005156 Dehydration Diseases 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
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- 239000007769 metal material Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- 239000000725 suspension Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a fracturing wellhead device, which comprises: what connect in order from top to bottom is low temperature resistant union joint, main control valve, goes up flange and five-way, and union joint, go up flange and oil pipe hanger all include interior core tube layer, low temperature resistant inoxidizing coating and the body layer of pipe that from inside to outside laminating set up. According to the invention, through the three-layer structural design that the low-temperature-resistant union joint, the low-temperature-resistant upper flange and the low-temperature-resistant oil pipe hanger are respectively provided with the inner core pipe layer, the low-temperature-resistant protective layer and the pipe body layer in a laminating manner from inside to outside and the low-temperature-resistant design of the main control valve, the five-way valve and the casing gate, the problem of supercooling damage can not occur when the device works in a low-temperature environment; and the fifth channel of the five-way valve is a monitoring channel, and the monitoring device can sequentially penetrate through the fifth channel and the fourth channel to extend into the underground, so that the real-time monitoring of the dynamic change of the formation parameters at the bottom of the well is realized, and the progress control and the safe production in the operation process are facilitated.
Description
Technical field
The present invention relates to coal-bed gas exploitation field, be specifically related to a kind of device for fracturing wellhead.
Background technology
Coal bed gas is a kind of new clean energy resource, usually uses fracturing technique, namely adopt high pressure fracture car, high pressure pipe joint facility in coal-bed gas exploitation process, by device for fracturing wellhead and high pressure fracture pipe, medium is clamp-oned in coal seam, coal seam is extruded crack, to improve the penetrating power in coal seam.
The device for fracturing wellhead of current coal-bed gas exploitation onsite application comprises the master control valve, top cover labyrinth and the four-way that connect successively from top to bottom, four-way inside is provided with boll-weevil hanger, the bottom of boll-weevil hanger is sitting on four-way, and the first passage of four-way is connected with master control valve, second channel is connected with sleeve gate respectively with third channel, and four-way is connected with the sleeve pipe stretching into down-hole.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
Make because the main valve of the device for fracturing wellhead of current onsite application, top cover labyrinth, four-way and boll-weevil hanger are ordinary metallic material, and ordinary metallic material fragility is at low ambient temperatures higher, so when use existing device for fracturing wellhead at low ambient temperatures transporting low temperature high-pressure medium time, what may occur device crosses Cold water stress, make device for fracturing wellhead because the pressure of cryogenic high pressure medium can not be born and the situation such as to burst, threaten to the personal safety of well head staff, impact is produced normally; And existing device for fracturing wellhead is due to the restriction of its structure, the situation that monitoring device comes at the bottom of monitor well cannot be installed, the dynamic change of downhole formation parameter can not be understood in real time, be unfavorable for progress monitoring and the safety in production of operation process.
Summary of the invention
In order to solve device for fracturing wellhead in prior art work at low ambient temperatures may occur Cold water stress, cannot Real-Time Monitoring downhole formation dynamic state of parameters change problem, embodiments provide a kind of device for fracturing wellhead.Described technical scheme is as follows:
The invention provides a kind of device for fracturing wellhead, described device for fracturing wellhead comprises: what from top to bottom connect in turn is low temperature resistant union joint, master control valve, upper flange and five-way, the first passage of described five-way is connected with described upper flange, the second channel of described five-way and third channel lay respectively at described first passage both sides, and described second channel and described third channel are all provided with low temperature resistant sleeve gate, the four-way of described five-way is connected with the sleeve pipe stretching into down-hole, the Five-channel of described five-way is positioned on the outer wall of described first passage, and described Five-channel and described first passage, described third channel is all non-interference, monitoring device is successively through described Five-channel, described four-way stretches into down-hole,
Described device for fracturing wellhead also comprises low temperature resistant boll-weevil hanger, the lower end of described boll-weevil hanger is positioned at described first passage, and fix with the inwall of described first passage, described upper flange inside is stretched in the upper end of described boll-weevil hanger, and is close to the inwall of described upper flange;
Described union joint, described upper flange and described boll-weevil hanger include fit from inside to outside the heart tube layer arranged, low temperature resistant overcoat and tube body layer.
Particularly, described heart tube layer, described tube body layer are low temperature resistant alloy steel material, and described low temperature resistant overcoat is foam glass material.
Particularly, described upper flange is taper, and the upper end cross-section diameter of described upper flange is less than lower end cross-section diameter.
Particularly, the tapering of described upper flange is 20 degree.
Particularly, obliquely, and the angle of described Five-channel and horizontal plane is 60 degree to the opening of described Five-channel.
Further, described device for fracturing wellhead also comprises joint, and described joint is fixed on the end of described Five-channel, and described joint is connected with described monitoring device.
Further, described device for fracturing wellhead also comprises screwed flange and ring gasket, and the upper end of described screwed flange is connected with described union joint screw thread, and the lower end of described screwed flange is connected with described master control valve;
Between the lower end of described screwed flange and described master control valve, between described master control valve and described upper flange, between described upper flange and described first passage, be provided with described ring gasket.
Particularly, outside the described heart tube layer of described boll-weevil hanger, outside described low temperature resistant overcoat, be provided with step, described low temperature resistant overcoat is sleeved on the step outside described heart tube layer, and described tube body layer is sleeved on the step outside described low temperature resistant overcoat.
Further, described boll-weevil hanger also comprises low temperature resistant sealing cap, the side of described sealing cap covers the described heart tube layer upper end of described boll-weevil hanger, the opposite side of described sealing cap extends between the heart tube layer of described boll-weevil hanger and described tube body layer, and described sealing cap and described low temperature resistant overcoat are close to.
Particularly, described union upper end of joint is provided with the trapezoidal external screw thread that diameter is 100mm, and lower end is provided with the oil tube external thread that diameter is 73mm.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
The present invention is low temperature resistant union joint by what connect successively from top to bottom, master control valve, upper flange and five-way, and the low temperature resistant boll-weevil hanger be arranged in the first passage of five-way, the sleeve gate being arranged on the second channel of five-way and the low temperature resistant of third channel constitutes the present invention, wherein, low temperature resistant union joint, low temperature resistant upper flange and low temperature resistant boll-weevil hanger are fitted all from inside to outside and are provided with heart tube layer, low temperature resistant overcoat and tube body layer, its heart tube layer and tube body layer design in low temperature resistant overcoat both sides respectively, low temperature resistant overcoat is protected not corroded, low temperature resistant overcoat has heat insulation function, the present invention's inside and outside generation exchange heat can be prevented, affect the performance of the cryogenic high pressure medium carried, by heart tube layer, low temperature resistant overcoat, the three layer construction design of tube body layer and master control valve, five-way, the low temperature resistant design of sleeve gate, the present invention is worked at low ambient temperatures and there will not be the problem of Cold water stress, and five-way of the present invention is designed with Five-channel, space is provided for installing monitoring device, monitoring device can pass Five-channel successively, four-way stretches into down-hole, realizes the Real-Time Monitoring of downhole formation dynamic state of parameters change, is conducive to progress monitoring and the safety in production of operation process.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the device for fracturing wellhead structural representation that the embodiment of the present invention provides;
Fig. 2 is the low temperature resistant union joint design schematic diagram that the embodiment of the present invention provides;
Fig. 3 is the low temperature resistant upper flange structural representation that the embodiment of the present invention provides;
Fig. 4 is the low temperature resistant boll-weevil hanger structural representation that the embodiment of the present invention provides;
Wherein: 1 union joint, 2 screwed flanges, 3 connecting bolt groups, 4 master control valves, 5 ring gaskets, 6 upper flanges, 7 boll-weevil hangers, 71 sealing caps, 8 five-ways, 9 joints, 10 sleeve gates, 11 heart tube layer, 12 low temperature resistant overcoats, 13 tube body layers.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment one:
As shown in Figure 1, embodiments provide a kind of device for fracturing wellhead, this device for fracturing wellhead comprises: what from top to bottom connect in turn is low temperature resistant union joint 1, master control valve 4, upper flange 6 and five-way 8, the first passage of five-way 8 is connected with upper flange 6, the second channel of five-way 8 and third channel lay respectively at first passage both sides, and second channel and third channel are all provided with low temperature resistant sleeve gate 10, the four-way of five-way 8 is connected with the sleeve pipe stretching into down-hole, the Five-channel of five-way 8 is positioned on the outer wall of first passage, and Five-channel and first passage, third channel is all non-interference, monitoring device is successively through Five-channel, four-way stretches into down-hole, this device for fracturing wellhead also comprises low temperature resistant boll-weevil hanger 7, and the lower end of boll-weevil hanger 7 is positioned at first passage, and fixes with the inwall of first passage, and upper flange 6 inside is stretched in the upper end of boll-weevil hanger 7, and is close to the inwall of upper flange 6, union joint 1, upper flange 6 include heart tube layer 11, low temperature resistant overcoat 12 and the tube body layer 13 of fitting from inside to outside and arranging with boll-weevil hanger 7.
The upper and lower end face of five-way 8 is all D395mm flange, and the axis of the first passage of five-way 8, second channel, third channel, four-way at grade, and first passage is positioned at the top of five-way 8, and first passage is connected with upper flange 6.Four-way is positioned at the bottom of five-way 8, connects the sleeve pipe leading to shaft bottom.The axis of second channel, third channel on the same line and near the bottom of five-way 8, second channel, third channel are connected with the sleeve gate 10 of same model respectively, as the passage of foreign material at the bottom of drainage well.Five-channel is on the sidewall of first passage, and as monitoring channel, monitoring device enters five-way 8 by Five-channel, enters shaft bottom through four-way.The design principles of Five-channel is not for interfere with other passages.
The union joint 1 of the embodiment of the present invention is connected with external pipe, and during use, cryogenic high pressure medium is entered in device for fracturing wellhead by union joint 1.In embodiments of the present invention, master control valve 4 is provided with two, the size of the amount of the cryogenic high pressure medium entering shaft bottom is controlled by two master control valves 4, when two master control valves 4 are all opened, the amount of the cryogenic high pressure medium that can carry is maximum, and when two master control valves 4 are all closed, device stops transporting low temperature high-pressure medium.Cryogenic high pressure medium is by entering low temperature resistant upper flange 6 after master control valve 4, and low temperature resistant upper flange 6 inwall and low temperature resistant boll-weevil hanger 7 upper wall are close to, cryogenic high pressure medium enters boll-weevil hanger 7 by the passage of low temperature resistant upper flange 6 inside, the lower end of boll-weevil hanger 7 is connected with the tubing round thread stretching into shaft bottom, and cryogenic high pressure medium is by carrying out fracturing work to shaft bottom under oil pipe.
In embodiments of the present invention, the four-way of five-way 8 is connected with the sleeve pipe leading to shaft bottom, can hold multiple-tubing string in sleeve pipe.The second channel of five-way 8 and third channel mounting sleeve gate 10, oil pipe is connected with sleeve gate 10 with four-way respectively by third channel, outwards carries waste material; The low temperature resistant functional realiey mode of each low temperature resistant parts of the present invention has multiple, generally selects low temperature resistant material.
The present invention is low temperature resistant union joint 1 by what connect successively from top to bottom, master control valve 4, upper flange 6 and five-way 8, and the low temperature resistant boll-weevil hanger 7 be arranged in the first passage of five-way 8, design the sleeve gate 10 at the second channel of five-way 8 and the low temperature resistant of third channel, constitute the present invention, and low temperature resistant union joint 1, low temperature resistant upper flange 6 and low temperature resistant boll-weevil hanger 7 are fitted all from inside to outside and are provided with heart tube layer 11, low temperature resistant overcoat 12 and tube body layer 13, wherein, heart tube layer 11 and tube body layer 13 design the both sides at low temperature resistant overcoat 12 respectively, play the effect preventing low temperature resistant overcoat 12 to be corroded, low temperature resistant overcoat 12 has the function of insulation, prevent of the present invention inside and outside between there is exchange heat, affect the cryogenic high pressure dielectric behavior carried.Designed by the three layer construction of heart tube layer 11, low temperature resistant overcoat 12, tube body layer 13, and master control valve 4, five-way 8, sleeve gate 10 all adopt low temperature material to make or increase insulation layer and realize its lower temperature resistance, certainly, those skilled in the art are known, also other modes can be adopted to realize its lower temperature resistance, also can adopt the three layer construction design etc. of heart tube layer 11, low temperature resistant overcoat 12, tube body layer 13, device be worked at low ambient temperatures and there will not be the problem of Cold water stress; And low temperature resistant five-way 8 of the present invention is designed with Five-channel, provide space for installing monitoring device, monitoring device can pass Five-channel successively, four-way stretches into down-hole, realizes the Real-Time Monitoring of downhole formation dynamic state of parameters change.
Embodiment two:
As shown in Figure 1, embodiments provide a kind of device for fracturing wellhead, device for fracturing wellhead comprises: what from top to bottom connect in turn is low temperature resistant union joint 1, master control valve 4, upper flange 6 and five-way 8, the first passage of five-way 8 is connected with upper flange 6, the second channel of five-way 8 and third channel lay respectively at first passage both sides, and second channel and third channel are all provided with low temperature resistant sleeve gate 10, the four-way of five-way 8 is connected with the sleeve pipe stretching into down-hole, the Five-channel of five-way 8 is positioned on the outer wall of first passage, and Five-channel and first passage, third channel is all non-interference, monitoring device is successively through Five-channel, four-way stretches into down-hole, device for fracturing wellhead also comprises low temperature resistant boll-weevil hanger 7, and the lower end of boll-weevil hanger 7 is positioned at first passage, and fixes with the inwall of first passage, and upper flange 6 inside is stretched in the upper end of boll-weevil hanger 7, and is close to the inwall of upper flange 6, union joint 1, upper flange 6 include heart tube layer 11, low temperature resistant overcoat 12 and the tube body layer 13 of fitting from inside to outside and arranging with boll-weevil hanger 7.
As shown in Figure 2, also can see Fig. 3, Fig. 4, in embodiments of the present invention, heart tube layer 11, the tube body layer 13 of low temperature resistant union joint 1, low temperature resistant upper flange 6 and low temperature resistant boll-weevil hanger 7 are low temperature resistant alloy steel material, and low temperature resistant overcoat 12 is foam glass material.Alternatively, in embodiments of the present invention, the material of heart tube layer 11, tube body layer 13 also can be the body material that other have resistance to low temperature, and the material of low temperature resistant overcoat 12 also can be the material that other have cold insulation function.And in embodiments of the present invention, five-way 8, joint 9, screwed flange 2, connecting bolt are the forging of low temperature resistant alloy steel, master control valve 4 and sleeve gate 10 are the low temperature resistant stainless steel sluice valve of buying, so, the parts of the device for fracturing wellhead that the embodiment of the present invention provides all are designed to low temperature resistant structure, achieve the resistance to low temperature of device entirety.Selectively, in embodiments of the present invention, five-way 8, joint 9, screwed flange 2, master control valve 4 and sleeve gate 10 also can increase insulation layer and realize its lower temperature resistance.
As shown in Figure 3, in embodiments of the present invention, upper flange 6 is taper, and the upper end cross-section diameter of upper flange 6 is less than lower end cross-section diameter.Upper flange 6 tube body layer 13, low temperature resistant overcoat 12 and heart tube layer 11 be all the conical surface design.
Preferably, in embodiments of the present invention, the tapering of upper flange 6 is 20 °.
Upper flange 6 tube body layer 13, all bonding by seccotine between low temperature resistant overcoat 12 and heart tube layer 11, upper and lower end face compacting is solidified.During use, tighten the bolt of connecting bolt group 3, boll-weevil hanger 7 compresses upper flange 6 inwall from the bottom to top, because tapered upper end diameter of section is less than lower end cross-section diameter, when boll-weevil hanger 7 compresses upper flange 6 inwall from bottom to top, the pressure of boll-weevil hanger 7 upper end becomes large, operating pressure raises, between boll-weevil hanger 7 and upper flange 6, contact strengthens, and sealing load also becomes large, makes the sealing effectiveness of upper flange 6 pairs of boll-weevil hangers 7 better.
As shown in Figure 1, preferably, in embodiments of the present invention, Five-channel opening obliquely, it is 60 ° with the angle of horizontal plane, Five-channel is monitoring channel, and its design, so that by the bottom of monitoring device lower going-into-well, does not all interfere with other passages of five-way 8 and is as the criterion, inventor is through overtesting and calculate discovery, when the angle of Five-channel and horizontal plane is 60 °, can make in the process of monitoring device at the bottom of lower going-into-well interference-free, and can monitoring range wider.
As shown in Figure 1, in embodiments of the present invention, when the opening of Five-channel and the angle of horizontal plane are 60 °, the angle of Five-channel projection in the horizontal plane and second channel, third channel axis is 40 ° ~ 70 °.And the middle part that the opening of Five-channel is positioned at five-way 8 is more conducive to observation.During work, monitoring device is successively by dynamic at the bottom of monitor well at the bottom of Five-channel, four-way lower going-into-well, such as, can pop one's head in by the bottom of Five-channel, four-way lower going-into-well at the bottom of monitor well dynamically by being used for, display or other monitoring equipments is connected in Five-channel outside, Real-Time Monitoring is carried out in the dynamic change realized on ground in the face of shaft bottom bottom parameter, is conducive to safety in production.
As shown in Figure 1, device for fracturing wellhead also comprises joint 9, and joint 9 is fixed on the end of Five-channel, and joint 9 is connected with monitoring device, makes staff can observe the dynamic of shaft bottom on the ground.In embodiments of the present invention, joint 9 one end is oil tube external thread, and connect with the oil pipe internal thread of test channel opening, the other end is oil pipe internal thread, connects external monitoring devices, and two ends tubing round thread specification is identical, convenient installation.
As shown in Figure 1, in embodiments of the present invention, device for fracturing wellhead also comprises screwed flange 2 and ring gasket 5, the upper end of screwed flange 2 is threaded with union joint 1, the lower end of screwed flange 2 is connected with master control valve 4, between the lower end of screwed flange 2 and master control valve 4, is provided with ring gasket 5 between master control valve 4 and upper flange 6, between upper flange 6 and first passage.In embodiments of the present invention, the upper and lower end face of the upper and lower end face of screwed flange 2, the upper and lower end face of master control valve 4, upper flange 6 is designed with groove, and ring gasket 5 seals device through groove.Low temperature resistant union joint 1 and master control valve 4, two master control valves 4, between master control valve 4 and low temperature resistant upper flange 6, low temperature resistant upper flange 6 is all connected by connecting bolt group 3 with between five-way 8 and uses ring gasket 5 to seal.When adopting connecting bolt group 3 be connected to this device of assembling or dismantle this device, technique is simple, is convenient to maintenance or the connection with other parts.
As shown in Figure 4, also can see Fig. 1, outside the heart tube layer 11 of boll-weevil hanger 7, be provided with step outside low temperature resistant overcoat 12, low temperature resistant overcoat 12 is sleeved on the step outside heart tube layer 11, and tube body layer 13 is sleeved on the step outside low temperature resistant overcoat 12.In the present embodiment, be designed with a L-type step outside the heart tube layer 11 of boll-weevil hanger 7, the lower end of low temperature resistant overcoat 12 is sitting on the L-type step of heart tube layer 11, and the outer wall of the inwall of low temperature resistant overcoat 12 and heart tube layer 11 is fitted, the middle part in the outside of low temperature resistant overcoat 12 and bottom design have two steps, and the inner side of tube body layer 13 is designed with a step, step inside tube body layer 13 is sitting on the step in the middle part of low temperature resistant overcoat 12, the lower end of tube body layer 13 is sitting on the step of low temperature resistant overcoat 12 lower end, and the outer wall of the inwall of tube body layer 13 and low temperature resistant overcoat 12 is fitted, so, heart tube layer 11, low temperature resistant overcoat 12, coordinated by step surface between tube body layer 13, low temperature resistant overcoat 12, the gravity of tube body layer 13 all drops on the step surface of heart tube layer 11.And heart tube layer 11 bottom is designed with step surface, boll-weevil hanger 7 is faced directly by this step surface on the step surface of the first passage inwall being suspended on five-way 8, the gravity making boll-weevil hanger 7 heart tube layer 11 lower end even stretch into the oil pipe in shaft bottom is all fallen on the step surface of five-way 8 inwall, when the oil pipe gravity of boll-weevil hanger 7 lower end suspension is larger, step between heart tube layer 11, low temperature resistant overcoat 12, tube body layer 13 coordinates and can effectively prevent three layer construction to be separated, and makes connection more reliable.And the outside of tube body layer 13 design groove, for fixing seals.Selectively, in embodiments of the present invention, the upper step of heart tube layer 11, low temperature resistant overcoat 12, tube body layer 13 also can be designed to multiple.
As shown in Figure 4, boll-weevil hanger 7 also comprises low temperature resistant sealing cap 71, the side of sealing cap 71 covers heart tube layer 11 upper end of boll-weevil hanger 7, the opposite side of sealing cap 71 extends between the heart tube layer 11 of boll-weevil hanger 7 and tube body layer 13, and sealing cap 71 and low temperature resistant overcoat 12 are close to.In embodiments of the present invention, sealing cap 71 is inside and outside, strong adhesive is all coated in bottom, high pressure presses down the heart tube layer 11 of tangible boll-weevil hanger 7 and the annular space of tube body layer 13, its height covering heart tube layer 11 side is 1 ~ 2mm, makes it better to the sealing effectiveness of innermost tube layer 11; And sealing cap 71 and low temperature resistant overcoat 12 are close to, and play the effect protecting low temperature resistant overcoat 12.
As shown in Figure 2, in embodiments of the present invention, union joint 1 upper end is provided with the trapezoidal external screw thread that diameter is 100mm, and lower end is provided with the oil tube external thread that diameter is 73mm.Union joint 1 upper end is connected with external oil pipe, because of the internal thread character of external oil pipe, uses the trapezoidal external screw thread of 100mm, design processing criterion, and trapezoidal thread connects more firm, and union joint 1 lower end arranges external screw thread and is connected with screwed flange 2.
In the present embodiment, in the tube body layer 13 of union joint 1, apply low temperature resistant overcoat 12, integral with the swelling of heart tube layer 11 high pressure.
Adopt the dimension series be of a size of according to API Standard Selection in the embodiment of the present invention, its Applicable temperature is-50 DEG C ~ 80 DEG C, and applicable pressure is 0 ~ 35MPa.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a device for fracturing wellhead, for to delivered downhole cryogenic high pressure medium, it is characterized in that, described device for fracturing wellhead comprises: what from top to bottom connect in turn is low temperature resistant union joint, master control valve, upper flange and five-way, the first passage of described five-way is connected with described upper flange, the second channel of described five-way and third channel lay respectively at described first passage both sides, and described second channel and described third channel are all provided with low temperature resistant sleeve gate, the four-way of described five-way is connected with the sleeve pipe stretching into down-hole, the Five-channel of described five-way is positioned on the outer wall of described first passage, and described Five-channel and described first passage, described third channel is all non-interference, monitoring device is successively through described Five-channel, described four-way stretches into down-hole,
Described device for fracturing wellhead also comprises low temperature resistant boll-weevil hanger, the lower end of described boll-weevil hanger is positioned at described first passage, and fix with the inwall of described first passage, described upper flange inside is stretched in the upper end of described boll-weevil hanger, and is close to the inwall of described upper flange;
Described union joint, described upper flange and described boll-weevil hanger include fit from inside to outside the heart tube layer arranged, low temperature resistant overcoat and tube body layer.
2. device for fracturing wellhead according to claim 1, is characterized in that, described heart tube layer, described tube body layer are low temperature resistant alloy steel material, and described low temperature resistant overcoat is foam glass material.
3. device for fracturing wellhead according to claim 1, is characterized in that, described upper flange is taper, and the upper end cross-section diameter of described upper flange is less than lower end cross-section diameter.
4. device for fracturing wellhead according to claim 3, is characterized in that, the tapering of described upper flange is 20 degree.
5. device for fracturing wellhead according to claim 1, is characterized in that, obliquely, and the angle of described Five-channel and horizontal plane is 60 degree to the opening of described Five-channel.
6. device for fracturing wellhead according to claim 3, is characterized in that, described device for fracturing wellhead also comprises joint, and described joint is fixed on the end of described Five-channel, and described joint is connected with described monitoring device.
7. device for fracturing wellhead according to claim 1, it is characterized in that, described device for fracturing wellhead also comprises screwed flange and ring gasket, and the upper end of described screwed flange is connected with described union joint screw thread, and the lower end of described screwed flange is connected with described master control valve;
Between the lower end of described screwed flange and described master control valve, between described master control valve and described upper flange, between described upper flange and described first passage, be provided with described ring gasket.
8. device for fracturing wellhead according to claim 1, it is characterized in that, outside the described heart tube layer of described boll-weevil hanger, outside described low temperature resistant overcoat, be provided with step, described low temperature resistant overcoat is sleeved on the step outside described heart tube layer, and described tube body layer is sleeved on the step outside described low temperature resistant overcoat.
9. device for fracturing wellhead according to claim 8, it is characterized in that, described boll-weevil hanger also comprises low temperature resistant sealing cap, the side of described sealing cap covers the described heart tube layer upper end of described boll-weevil hanger, the opposite side of described sealing cap extends between the described heart tube layer of described boll-weevil hanger and described tube body layer, and described sealing cap and described low temperature resistant overcoat are close to.
10. device for fracturing wellhead according to claim 1, is characterized in that, described union upper end of joint is provided with the trapezoidal external screw thread that diameter is 100mm, and lower end is provided with the oil tube external thread that diameter is 73mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410494251.XA CN105507866B (en) | 2014-09-24 | 2014-09-24 | Fracturing wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410494251.XA CN105507866B (en) | 2014-09-24 | 2014-09-24 | Fracturing wellhead device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105507866A true CN105507866A (en) | 2016-04-20 |
| CN105507866B CN105507866B (en) | 2018-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410494251.XA Active CN105507866B (en) | 2014-09-24 | 2014-09-24 | Fracturing wellhead device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252848A (en) * | 2018-11-29 | 2019-01-22 | 美钻深海能源科技研发（上海）有限公司 | It is a kind of to produce and the dual-purpose split type upper flange of pressure break |
| CN114320208A (en) * | 2022-03-11 | 2022-04-12 | 四川圣诺油气工程技术服务有限公司 | Self-tightening sealing structure of gas well wellhead visualization device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2365738C1 (en) * | 2008-05-20 | 2009-08-27 | Закрытое акционерное общество Финансовая компания "Центр-Космос- Нефть-Газ" | Oil and gas well |
| CN101560878A (en) * | 2009-05-20 | 2009-10-21 | 辽河石油勘探局 | Horizontal well even steam injection and test wellhead device |
| CN102287156A (en) * | 2011-08-05 | 2011-12-21 | 中国石油天然气股份有限公司 | Concentric pipe wellhead device for exploiting thickened oil by steam assisted gravity drainage |
| CN203230370U (en) * | 2013-03-28 | 2013-10-09 | 中国石油天然气股份有限公司 | Three-position multifunctional three-pipe wellhead device |
| CN204113260U (en) * | 2014-09-24 | 2015-01-21 | 中国石油天然气股份有限公司 | Fracturing wellhead device |
-
2014
- 2014-09-24 CN CN201410494251.XA patent/CN105507866B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2365738C1 (en) * | 2008-05-20 | 2009-08-27 | Закрытое акционерное общество Финансовая компания "Центр-Космос- Нефть-Газ" | Oil and gas well |
| CN101560878A (en) * | 2009-05-20 | 2009-10-21 | 辽河石油勘探局 | Horizontal well even steam injection and test wellhead device |
| CN102287156A (en) * | 2011-08-05 | 2011-12-21 | 中国石油天然气股份有限公司 | Concentric pipe wellhead device for exploiting thickened oil by steam assisted gravity drainage |
| CN203230370U (en) * | 2013-03-28 | 2013-10-09 | 中国石油天然气股份有限公司 | Three-position multifunctional three-pipe wellhead device |
| CN204113260U (en) * | 2014-09-24 | 2015-01-21 | 中国石油天然气股份有限公司 | Fracturing wellhead device |
Non-Patent Citations (1)
| Title |
|---|
| 李珏: "低温管道的保冷设计", 《石油化工设计》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252848A (en) * | 2018-11-29 | 2019-01-22 | 美钻深海能源科技研发（上海）有限公司 | It is a kind of to produce and the dual-purpose split type upper flange of pressure break |
| CN114320208A (en) * | 2022-03-11 | 2022-04-12 | 四川圣诺油气工程技术服务有限公司 | Self-tightening sealing structure of gas well wellhead visualization device |
| CN114320208B (en) * | 2022-03-11 | 2022-05-06 | 四川圣诺油气工程技术服务有限公司 | Gas well head visualization device's self-tightening sealing structure |
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| CN105507866B (en) | 2018-08-10 |
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