CN204419156U - Gas-liquid separation device for drilling and grinding bridge plug flowback process of natural gas well - Google Patents
Gas-liquid separation device for drilling and grinding bridge plug flowback process of natural gas well Download PDFInfo
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- CN204419156U CN204419156U CN201420865512.XU CN201420865512U CN204419156U CN 204419156 U CN204419156 U CN 204419156U CN 201420865512 U CN201420865512 U CN 201420865512U CN 204419156 U CN204419156 U CN 204419156U
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- 239000007788 liquid Substances 0.000 title claims abstract description 70
- 238000000926 separation method Methods 0.000 title claims abstract description 37
- 239000002343 natural gas well Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title abstract description 16
- 238000005553 drilling Methods 0.000 title abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 24
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 30
- 238000004064 recycling Methods 0.000 description 17
- 239000003345 natural gas Substances 0.000 description 15
- 238000012360 testing method Methods 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 13
- 239000002737 fuel gas Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 241001074085 Scophthalmus aquosus Species 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides a gas-liquid separation device for a drilling and grinding bridge plug flowback process of a natural gas well, which comprises a cylinder with two closed ends and a sieve tube arranged in the cylinder along the axial direction of the cylinder, wherein two ends of the sieve tube respectively extend out of the cylinder; a plurality of liquid discharge holes are formed in the wall of the cylinder; the pipe wall of the sieve pipe is provided with a plurality of small holes, and the radial central line of the small holes along the pipe wall is parallel to the radial central line of the liquid discharge hole along the cylinder wall. When the return gas-liquid is returned, the return gas-liquid is separated under the action of gravity, the flow of the ball valve and the filtering action of the small holes of the sieve tube, the liquid is dispersed in the cylinder in the form of rain flowers and flows into the recovery tank through the liquid discharge hole on the cylinder, and the gas is dispersed along with the liquid, so that the problems that the return gas-liquid is difficult to separate and the combustible gas is difficult to detect are solved. Ensure the safety of field operation and accord with the environmental protection regulations.
Description
Technical field
The utility model belongs to gas field underground work site plant technical field, is one of auxiliary equipment in gas well fracturing, gas testing operation process, is specifically related to a kind of boring for the natural gas well and grinds the gas-liquid separation device that bridging plug returns drainage journey.
Background technology
In the transformation of evaluation well compact reservoir, usually adopt slim-hole 3-1/2 " sleeve pipe drilling type composite bridge plug separate stratum fracfturing technology, the effect of bridging plug is Oil/gas Well sealing, there is working procedure few, cycle is short, card envelope position feature accurately, be divided into permanent type bridging plug and detachable bridge plug two kinds: (1) permanent type bridging plug is formed at the initial stage eighties, because its working procedure is few, cycle is short, card envelope position is accurate, so be just widely applied in Oil/gas Well sealing once appearance, substantially the technology of cementing plug sealing before instead of, become Pressure Curve in Oil Testing Well shutoff and try layer, the main sealing technique of formation testing is returned on carrying out.The special layers positions such as the dried layer, water layer, gas-bearing formation and the abnormal pressure that occur in middle-shallow layer formation testing construction, for convenience of follow-up formation testing, plugged and abandoned layer position, usually adopts such bridging plug to carry out sealing, terminates well simultaneously also adopt permanent type bridging plug to shunt in a well for part short-term without the formation testing of development plan.In addition, this bridging plug also for the layer of the examination shutoff of deep gas well, for the successful implementation above returning the technologies such as test, fracturing reform provides safeguard.(2) detachable bridge plug produces along with the appearance of permanent type bridging plug, be formed at the eighties, as a kind of oil field down-hole plugging instrument, be widely used in oil field prospecting and exploitation shutoff lower well section when oil-water well separate stratum fracfturing, separate layer acid treatment, formation testing by layer construction.It solve preferably set, salvage, unsealing operation is complicated, uses the problem that success rate is low.Functionally part can substitute+packer of giving up, permanent type bridging plug and note grey shutoff, is a kind of safe and reliable, with low cost, multiple functional down-hole plugging instrument.In middle-shallow layer formation testing construction, for packing abnormal pressure, high yield, span, the special layers position such as large or inclined shaft, realization is returned formation testing, the success rate of two sealed packer construction is lower, for convenience of follow-up formation testing, improve formation testing one-time success rate, usually adopt such bridging plug to carry out sealing.
Before gas well is gone into operation, need to bore rapidly to grind off bridging plug, and at brill mill bridging plug, in gas lift liquid drainage process, according to environmental requirement, allly return discharge opeing and do not allow to land, must collect and enter recycling can, returning drainage journey end, if there is natural gas to return out, gas detecting instrument not easily detects natural gas, can not return out by Timeliness coverage natural gas, natural gas together can enter recycling can with liquid, there is larger potential safety hazard, therefore, it is difficult that brill mill bridging plug in the urgent need to address returns the gas-liquid separation of drainage journey end, the problem not easily detected, research makes a kind of being applicable to and bores the gas-liquid separation device that mill composite bridge plug returns row's recovery process.
Utility model content
The purpose of this utility model is to provide a kind of boring for the natural gas well and grinds the gas-liquid separation device that bridging plug returns drainage journey, solves brill mill bridging plug and returns the problem that the gas-liquid separation of drainage journey end is difficult, not easily detect.
For this reason, the utility model provides a kind of boring for the natural gas well and grinds the gas-liquid separation device that bridging plug returns drainage journey, comprise in the cylinder of closed at both ends and cylinder along Cylindorical rod to the screen casing arranged, the outside of cylinder is extended at the two ends of screen casing respectively, one end of screen casing is connected with box cupling, this box cupling is used for being connected with tapping line, the other end mounting ball valve of screen casing;
The barrel of described cylinder is provided with multiple outage;
The tube wall of described screen casing is provided with multiple aperture, and aperture is along the center line of tube wall radial direction and outage along the centerline parallel of barrel radial direction.
Described outage equidistantly arranges along the barrel of cylinder, and aperture equidistantly arranges along the tube wall of screen casing.
Described outage has three.
The diameter of described aperture is 4mm ~ 8mm.
The diameter of described aperture is 6.18mm.
Also comprise the bracing or strutting arrangement be fixedly connected with the barrel of cylinder, described bracing or strutting arrangement comprises the V-type support bottom the barrel two ends being fixedly connected on cylinder respectively, and the horizontal stand be fixedly connected with the bottom of V-type support.
Described horizontal stand forms with the horizontal steel plate of the centerline axis parallel of cylinder, the vertical steel plate that is fixedly connected on the two ends of horizontal steel plate vertical with horizontal steel plate by two;
Described horizontal steel plate and vertical steel plate are in same plane, and the upper surface of vertical steel plate is fixedly connected with V-type support.
The beneficial effects of the utility model: this is used for the natural gas well and bores the gas-liquid separation device that mill bridging plug returns drainage journey and be placed on recycling can, return exhaust liquid when returning exhaust liquid and returning out to be separated under Action of Gravity Field, ball valve choked flow and the aperture filtration of screen casing, liquid distributes in cylinder with the form of rain flower, and flow into recycling can by the outage on cylinder, in the process of distributing, gas also flies away out thereupon, solves and returns discharge opeing gas-liquid separation difficulty, not easily detect the problem of fuel gas.Return out if any natural gas, just be easy to detect fuel gas at the other gas detecting instrument that uses of gas-liquid separation device returning drainage journey for natural gas well brill mill bridging plug, flow process can be switched immediately after finding fuel gas, control downstream pressure, make to return discharging liquid and enter two phase separator, carry out gas-liquid separation, gas enters combustion cell burning, liquid enters recycling can and collects, and guarantees field work safe.
Below with reference to accompanying drawing, the utility model is described in further details.
Accompanying drawing explanation
Fig. 1 bores for the natural gas well elevation that mill bridging plug returns the gas-liquid separation device of drainage journey.
Fig. 2 bores for the natural gas well upward view that mill bridging plug returns the gas-liquid separation device of drainage journey.
Fig. 3 bores for the natural gas well lateral view that mill bridging plug returns the gas-liquid separation device of drainage journey.
Fig. 4 is the schematic diagram of bracing or strutting arrangement.
Fig. 5 bores for the natural gas well scheme of installation that mill bridging plug returns the gas-liquid separation device of drainage journey.
Description of reference numerals: 1, cylinder; 2, screen casing; 3, box cupling; 4, ball valve; 5, outage; 6, aperture; 7, bracing or strutting arrangement; 8, V-type support; 9, horizontal stand; 901, horizontal steel plate; 902, vertical steel plate; 10, well head; 11, surface safety valve (SSV); 12, desander; 13, choke manifold; 14, two phase separator; 15, three phase separator; 16, recycling can; 17, combustion cell; 18, the first valve; 19, the second valve; 20, the 3rd valve; 21, the 4th valve; 22, the 5th valve; 23, the 6th valve; 24, the 7th valve; 25, the 8th valve; 26, the 9th valve; 27, the tenth valve.
Detailed description of the invention
Further the gas-liquid separation device that this returns drainage journey for natural gas well brill mill bridging plug is described in detail below with reference to accompanying drawing.
embodiment 1:
The utility model provides a kind of boring for the natural gas well and grinds the gas-liquid separation device that bridging plug returns drainage journey, as shown in Figure 1, Figure 2 and Figure 3, comprise the screen casing 2 axially arranged along cylinder 1 in the cylinder 1 of closed at both ends and cylinder 1, the outside of cylinder 1 is extended at the two ends of screen casing 2 respectively, one end of screen casing 2 is connected with box cupling 3, this box cupling 3 for being connected with tapping line, the other end mounting ball valve 4 of screen casing 2; The barrel of described cylinder 1 is provided with multiple outage 5; The tube wall of described screen casing 2 is provided with multiple aperture 6, and aperture 6 is along the center line of tube wall radial direction and outage 5 along the centerline parallel of barrel radial direction.
First gas detecting instrument is used, preferred U.S. English Cisco M40 four-in-one gas detecting instrument, whether the gas-liquid separation device side that detection returns drainage journey for natural gas well brill mill bridging plug has fuel gas, as without fuel gas, then select to bore mill bridging plug and return drainage journey, i.e. well head 10 → surface safety valve (SSV) 11 → desander 12 → choke manifold 13 → gas-liquid separation device → recycling can 16, concrete, as shown in Figure 5, open the first valve 18 and the second valve 19, other valve closings, mixture in oil pipe exports from well head 10, desander 12 is arrived by surface safety valve (SSV) 11, arranging desander 12 protects plant equipment to exempt from wearing and tearing, reduce weight at pipeline, deposition in groove, and reduce because foreign particle is accumulated in clearing times required in digester in a large number, natural gas arranges desander 12 in producing can prevent formation sand production blocking pipeline or appliance arrangement, desander 12 is by after the Impurity removal of Large stone that contains in mixture, mixture is by choke manifold 13, directly enter and bore for the natural gas well gas-liquid separation device that mill bridging plug returns drainage journey, this is used for the natural gas well and bores the gas-liquid separation device that mill bridging plug returns drainage journey and be placed on recycling can 16, when returning exhaust liquid and returning out, return exhaust liquid and enter screen casing 2, return exhaust liquid at Action of Gravity Field simultaneously, ball valve 4 choked flow is separated with under the lattice gear effect of the aperture 6 on screen casing 2 tube wall, liquid distributes in cylinder 1 with the form of rain flower, and flow into recycling can 16 from the outage 5 cylinder 1, in the process of distributing, gas also flies away out thereupon, achieve gas-liquid separation, and reduce the difficulty detecting natural gas, also ensure that the safety of operation simultaneously, and meet environmental regulations.
As gas detecting instrument detects that boring mill bridging plug for the natural gas well returns that the gas-liquid separation device of drainage journey is other fuel gas, namely returning in exhaust liquid has natural gas to return out, then select discharge opeing flow process, namely well head 10 → surface safety valve (SSV) 11 → desander 12 → choke manifold 13 → two phase separator 14 → natural gas to combustion cell 17 burn/liquid collection is to recycling can 16, concrete, as shown in Figure 5, open the 7th valve 24, 8th valve 25, 9th valve 26 and the tenth valve 27, other valve closings, mixture in oil pipe exports from well head 10, desander 12 is arrived by surface safety valve (SSV) 11, arranging desander 12 protects plant equipment to exempt from wearing and tearing, reduce weight at pipeline, deposition in groove, and reduce because foreign particle is accumulated in clearing times required in digester in a large number, natural gas arranges desander 12 in producing can prevent formation sand production blocking pipeline or appliance arrangement, desander 12 is by after the Impurity removal of Large stone that contains in mixture, mixture is by choke manifold 13, enter two phase separator 14, by two phase separator 14, liquids and gases are separated, isolated natural gas enters combustion cell 17 and burns, liquid enters recycling can 16 and collects, guarantee discharge opeing safety.
In the production test stage in discharge opeing flow process latter stage, select testing process, namely well head 10 → surface safety valve (SSV) 11 → desander 12 → choke manifold 13 → three phase separator 15 → natural gas to combustion cell 17 burn/liquid collection is to recycling can 16, concrete, as shown in Figure 5, open the second valve 19, 3rd valve 20, 4th valve 21, 5th valve 22 and the 6th valve 23, other valve closings, mixture in oil pipe exports from well head 10, desander 12 is arrived by surface safety valve (SSV) 11, arranging desander 12 protects plant equipment to exempt from wearing and tearing, reduce weight at pipeline, deposition in groove, and reduce because foreign particle is accumulated in clearing times required in digester in a large number, natural gas arranges desander 12 in producing can prevent formation sand production blocking pipeline or appliance arrangement, desander 12 is by after the Impurity removal of Large stone that contains in mixture, mixture is by choke manifold 13, enter three phase separator 15, by three phase separator 15, liquids and gases are separated, isolated natural gas enters combustion cell 17 and burns, liquid enters recycling can 16 and collects, guarantee discharge opeing safety.
It should be noted that, when bridging plug chip blocking screen casing, cleaning de-plugging can be carried out to it, residue in collecting pipe at ball valve 4 connecting line of screen casing end.
embodiment 2:
On the basis of embodiment 1, further, in order to make to return exhaust liquid discharged by aperture 6 and outage 5 time, can uniform force, described outage 5 equidistantly arranges along the barrel of cylinder 1, and aperture 6 equidistantly arranges along the tube wall of screen casing 2, and the spacing of aperture 6 is 100mm.
embodiment 3:
On the basis of embodiment 2, it should be noted that, described outage 5 has three, and preferably outage 5 is elliptical shape, concrete, and oval major axis is 250mm, and minor axis is 220mm.
embodiment 4:
On the basis of embodiment 2, further, the diameter of described aperture 6 is 4mm ~ 8mm.
embodiment 5:
On the basis of embodiment 4, concrete, the diameter of described aperture 6 is 6.18mm.
embodiment 6:
On the basis of embodiment 1, as shown in Figure 3 and Figure 4, also comprise the bracing or strutting arrangement 7 be fixedly connected with the barrel of cylinder 1, described bracing or strutting arrangement 7 comprises the V-type support 8 bottom the barrel two ends being fixedly connected on cylinder 1 respectively, and the horizontal stand 9 be fixedly connected with the bottom of V-type support 8.It is pointed out that bracing or strutting arrangement 7 grinds bridging plug and returns the gas-liquid separation device of drainage journey by being welded to connect with boring for the natural gas well, during use, supportive device is placed on recycling can 16, make to return and be vented liquid from the process that outage 5 is discharged, distribute more thorough.
embodiment 7:
On the basis of embodiment 6, concrete, described horizontal stand 9 forms with the horizontal steel plate 901 of the centerline axis parallel of cylinder 1, the vertical steel plate 902 that is fixedly connected on the two ends of horizontal steel plate 901 vertical with horizontal steel plate 901 by two; Described horizontal steel plate 901 is in same plane with vertical steel plate 902, and the upper surface of vertical steel plate 902 is fixedly connected with V-type support 8.
What the utility model provided bore for the natural gas well gas-liquid separation device that mill bridging plug returns drainage journey is placed on recycling can, return exhaust liquid when returning exhaust liquid and returning out to be separated under Action of Gravity Field, ball valve choked flow and the aperture filtration of screen casing, liquid distributes in cylinder with the form of rain flower, and flow into recycling can by the outage on cylinder, in the process of distributing, gas also flies away out thereupon, solves and returns discharge opeing gas-liquid separation difficulty, not easily detect the problem of fuel gas.Return out if any natural gas, just be easy to detect fuel gas at the other gas detecting instrument that uses of gas-liquid separation device returning drainage journey for natural gas well brill mill bridging plug, flow process can be switched immediately after finding fuel gas, control downstream pressure, make to return discharging liquid and enter two phase separator, carry out gas-liquid separation, gas enters combustion cell burning, liquid enters recycling can and collects, and guarantees field work safe, and meets environmental regulations.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection domain of the present utility model with the same or analogous design of the utility model.The parts that the present embodiment does not describe in detail and structure belong to the well-known components of the industry and common structure or conventional means, do not describe one by one here.
Claims (7)
1. one kind is bored for the natural gas well gas-liquid separation device that mill bridging plug returns drainage journey, it is characterized in that: comprise the screen casing (2) axially arranged along cylinder (1) in the cylinder (1) of closed at both ends and cylinder (1), the outside of cylinder (1) is extended at the two ends of screen casing (2) respectively, one end of screen casing (2) is connected with box cupling (3), this box cupling (3) for being connected with tapping line, screen casing (2) other end mounting ball valve (4);
The barrel of described cylinder (1) is provided with multiple outage (5);
The tube wall of described screen casing (2) is provided with multiple aperture (6), and aperture (6) is along the center line of tube wall radial direction and outage (5) along the centerline parallel of barrel radial direction.
2. a kind of boring for the natural gas well grinds the gas-liquid separation device that bridging plug returns drainage journey as claimed in claim 1, it is characterized in that: described outage (5) equidistantly arranges along the barrel of cylinder (1), and aperture (6) equidistantly arranges along the tube wall of screen casing (2).
3. a kind of boring for the natural gas well grinds the gas-liquid separation device that bridging plug returns drainage journey as claimed in claim 2, it is characterized in that: described outage (5) has three.
4. a kind of boring for the natural gas well grinds the gas-liquid separation device that bridging plug returns drainage journey as claimed in claim 2, it is characterized in that: the diameter of described aperture (6) is 4mm ~ 8mm.
5. a kind of boring for the natural gas well grinds the gas-liquid separation device that bridging plug returns drainage journey as claimed in claim 4, it is characterized in that: the diameter of described aperture (6) is 6.18mm.
6. a kind of boring for the natural gas well grinds the gas-liquid separation device that bridging plug returns drainage journey as claimed in claim 1, it is characterized in that: also comprise the bracing or strutting arrangement (7) be fixedly connected with the barrel of cylinder (1), described bracing or strutting arrangement (7) comprises the V-type support (8) bottom the barrel two ends being fixedly connected on cylinder (1) respectively, and the horizontal stand (9) be fixedly connected with the bottom of V-type support (8).
7. a kind ofly as claimed in claim 2 bore mill bridging plug for the natural gas well and return the gas-liquid separation device of drainage journey, it is characterized in that: described horizontal stand (9) forms with the horizontal steel plate (901) of the centerline axis parallel of cylinder (1), the vertical steel plate (902) that is fixedly connected on the two ends of horizontal steel plate (901) vertical with horizontal steel plate (901) by two;
Described horizontal steel plate (901) and vertical steel plate (902) are in same plane, and the upper surface of vertical steel plate (902) is fixedly connected with V-type support (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420865512.XU CN204419156U (en) | 2014-12-31 | 2014-12-31 | Gas-liquid separation device for drilling and grinding bridge plug flowback process of natural gas well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420865512.XU CN204419156U (en) | 2014-12-31 | 2014-12-31 | Gas-liquid separation device for drilling and grinding bridge plug flowback process of natural gas well |
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| CN204419156U true CN204419156U (en) | 2015-06-24 |
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| CN201420865512.XU Active CN204419156U (en) | 2014-12-31 | 2014-12-31 | Gas-liquid separation device for drilling and grinding bridge plug flowback process of natural gas well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533381A (en) * | 2014-12-31 | 2015-04-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Gas-liquid separation device for drilling and grinding bridge plug flowback process of natural gas well |
| CN107606488A (en) * | 2017-10-30 | 2018-01-19 | 中国石油天然气集团公司管材研究所 | Infiltration gas detecting and controlling system in a kind of thermoplastic lined steel pipe annular space |
-
2014
- 2014-12-31 CN CN201420865512.XU patent/CN204419156U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533381A (en) * | 2014-12-31 | 2015-04-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Gas-liquid separation device for drilling and grinding bridge plug flowback process of natural gas well |
| CN104533381B (en) * | 2014-12-31 | 2017-05-10 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Gas-liquid separation device for drilling and grinding bridge plug flowback process of natural gas well |
| CN107606488A (en) * | 2017-10-30 | 2018-01-19 | 中国石油天然气集团公司管材研究所 | Infiltration gas detecting and controlling system in a kind of thermoplastic lined steel pipe annular space |
| CN107606488B (en) * | 2017-10-30 | 2023-11-21 | 中国石油集团工程材料研究院有限公司 | Detection and control system for annular inner permeation gas of thermoplastic plastic lining steel pipe |
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