CN206554901U - Water drainage gas production device - Google Patents
Water drainage gas production device Download PDFInfo
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- CN206554901U CN206554901U CN201720003197.3U CN201720003197U CN206554901U CN 206554901 U CN206554901 U CN 206554901U CN 201720003197 U CN201720003197 U CN 201720003197U CN 206554901 U CN206554901 U CN 206554901U
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 82
- 239000007788 liquid Substances 0.000 claims abstract description 129
- 238000002347 injection Methods 0.000 claims abstract description 54
- 239000007924 injection Substances 0.000 claims abstract description 54
- 239000006260 foam Substances 0.000 claims abstract description 37
- 230000015572 biosynthetic process Effects 0.000 claims description 34
- 241000521257 Hydrops Species 0.000 claims description 18
- 206010030113 Oedema Diseases 0.000 claims description 18
- 230000008901 benefit Effects 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 8
- 238000011084 recovery Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 162
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 64
- 239000003345 natural gas Substances 0.000 description 32
- 239000004088 foaming agent Substances 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 238000001223 reverse osmosis Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 230000009467 reduction Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000012279 drainage procedure Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 239000002349 well water Substances 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The embodiment of the utility model provides a drainage gas production device, include: the gas production pipe column, the gas-liquid flow dividing device and the liquid guiding pipe are positioned inside the sleeve; the casing is provided with a perforation on the well section at the gas layer position; the gas-liquid shunting device and the sleeve form sealing through a packer to divide the sleeve into a first part space and a second part space; the upper part of the gas-liquid flow dividing device is connected with the lower part of the gas production pipe column to form a gas output channel; the lower part of the gas-liquid flow dividing device is connected with the upper part of the liquid guiding pipe, and the lower part of the liquid guiding pipe is connected with the one-way valve and used for guiding the liquid in the liquid accumulating area to the first part space of the sleeve; the coiled tubing is put into the annular space of the casing from the casing opening of the casing; the bottom of the coiled tubing is positioned at a preset height above the packer; the upper part of the continuous oil pipe is respectively connected with a foam adding device and a gas injection device. The utility model discloses can improve gaseous recovery ratio.
Description
Technical field
The utility model is related to petroleum and natural gas production technique field, more particularly to a kind of water drainage gas production device.
Background technology
Domestic and international most natural gas pool, the partially or fully region on its border, all by stratum water (Bian Shui, bottom water,
Or side, bottom water coexist) surrounded；In recovery process, with the reduction of pressure, stratum water is constantly invaded in gas-bearing formation；Nearly well
After band High water cut, flowing of the gas to producing well is just limited；Producing well water outlet is also inevitable.Therefore, how by well
Water in cylinder is discharged in time, is that gas well is able to maintain that the key normally produced.
In the prior art, according to factors such as well depth, water yield, hole condition, reservoirs, a variety of drainage technology sides of research and development
Method, according to its drainage principle, can substantially return and be divided into two classes：Water class is lifted by external force draining type and by stratum energy
Type.
Mainly include by external force draining type：(1) mechanical water discharge technology (pumping), for example pump pump drainage, electric submersible pump
Continuously circulation natural gas injection water discharge technology and the re-injection of (4) underground are arranged for draining, turbine pump drainage etc., (2) gaslift water discharge technology, (3)
Water technology etc..
Mainly include by stratum energy lifting water type：(1) optimization tubing string, (2) coiled tubing water discharge technology (with it is excellent
Change tubing string similar), (3) foaming water discharge technology (referred to as bubble row), (4) ultrasonic atomization water discharge technology and (5) plunger lift draining
Technology etc..
However, due to the drainage technology method by external force draining type, it is necessary to submergence, therefore shaft bottom can be caused to deposit
Water, causes shaft bottom water to be inhaled near wellbore zone reverse osmosis, makes the seepage channel of gas by slowly water logging, thus gas is near wellbore zone
Filtrational resistance increase, meanwhile, also reduce shaft bottom producing pressure differential.
The drainage technology method of water type is lifted by stratum energy, on the one hand shaft bottom can be caused to have hydrops, therefore
Inevitably occur reverse osmosis to inhale so that filtrational resistance of the gas near wellbore zone increases, in another aspect gas production tubing string, gas
The flowing of body must pull against the resistance of water, and causing air-flow, smooth, producing pressure differential is not reduced so that gas producting rate is slow, in addition, at this
Under class technique, by gas band water, then bottom pressure increase, along with reverse osmosis is inhaled, can cause producing pressure differential to reduce, cause gas
Flowing is not smooth, makes the reduction of gas production capacity, so, the drainability of whole system can also be reduced, and after drainability reduction, leads again
The increase of shaft bottom water is caused, so as to form vicious circle.In summary, using water drainage gas production device of the prior art, all deposit
In certain limitation, so as to cause the recovery ratio of gas relatively low.
Utility model content
In view of this, the utility model embodiment provides a kind of water drainage gas production device, to improve the recovery ratio of gas.
To reach above-mentioned purpose, the utility model mainly provides following technical scheme：
The utility model embodiment provides a kind of water drainage gas production device, including：Gas production tubing string, sleeve pipe, gas-liquid shunting dress
Put, liquid guiding tube, coiled tubing, foam adding set and gas injection device；Wherein：
The gas production tubing string, the gas-liquid part flow arrangement and the liquid guiding tube are located at the inside of described sleeve pipe；Described sleeve pipe
Perforation is provided with the well section positioned at gas-bearing formation position；
Sealed between the gas-liquid part flow arrangement and sleeve pipe by packer formation, sleeve pipe is divided into Part I space
With Part II space；The Part I space is used to keep in aqueous；The Part II space be used for gas-liquid separation and
Temporary aqueous；
The top of the gas-liquid part flow arrangement is connected with the bottom of the gas production tubing string, forms gas output passage；It is described
The bottom of gas-liquid part flow arrangement is connected with the top of the liquid guiding tube, and the bottom of the liquid guiding tube is connected with the check valve, is used
Liquid guide flow in by hydrops area is in the Part I space of described sleeve pipe；
The coiled tubing is lowered into casing annulus by the sleeve opening of described sleeve pipe；The bottom of the coiled tubing is located at
At preset height above packer；The top of the coiled tubing respectively with the foam adding set and the gas injection device
Connection.
Alternatively, the foam adding set includes：Foam tank and injection pump；Wherein, one end of the foam tank and institute
One end connection of injection pump is stated, the other end of the injection pump is connected with the coiled tubing.
Alternatively, the gas injection device includes compressor；Wherein, one end of the compressor and the gas production tubing string is upper
Portion's gas transmission line connection, the other end of the compressor is connected with the coiled tubing.
Alternatively, the packer is located at the preset height more than at the top of gas-bearing formation.
Alternatively, in addition to：Mend away from short tube；Wherein, under one end and the gas-liquid part flow arrangement away from short tube of the benefit
Portion is connected, and the other end of the benefit away from short tube is connected with the top of the liquid guiding tube.
Alternatively, the described one end of benefit away from short tube is connected by joint with the bottom of the gas-liquid part flow arrangement, described to mend
The other end away from short tube is connected by joint with the top of the liquid guiding tube.
Alternatively, the top of the gas production tubing string is connected by valve with one end of the gas injection device；The air collecting pipe
The bottom of post is connected by joint with the top of the gas-liquid part flow arrangement.
Alternatively, the other end of the injection pump is connected by valve with the coiled tubing.
Alternatively, the other end of the compressor is connected by valve with the coiled tubing.
By above-mentioned technical proposal, the utility model water drainage gas production device at least has the advantages that：
The water drainage gas production device that the utility model embodiment is provided, including gas production tubing string, sleeve pipe, gas-liquid part flow arrangement, draw
Liquid pipe, coiled tubing, foam adding set and gas injection device；Wherein, gas production tubing string, gas-liquid part flow arrangement and liquid guiding tube are located at set
The inside of pipe；Sleeve pipe is provided with perforation in the well section positioned at gas-bearing formation position；Pass through packing between gas-liquid part flow arrangement and sleeve pipe
Device formation sealing, Part I space and Part II space are divided into by sleeve pipe；Part I space is used to keep in aqueous；The
Two segment spaces are used for the separation of gas-liquid and temporary aqueous；The top of gas-liquid part flow arrangement is connected with the bottom of gas production tubing string, shape
Into gas output passage；The bottom of gas-liquid part flow arrangement and the top of liquid guiding tube are connected, and the bottom of liquid guiding tube is connected with check valve,
For in the Part I space by the liquid guide flow in hydrops area to sleeve pipe；Coiled tubing is lowered into set by the sleeve opening of sleeve pipe
In pipe ring is empty；The bottom of coiled tubing is located at the preset height above packer；The top of coiled tubing adds with foam respectively
Feeder apparatus and gas injection device connection.Because sleeve pipe implements perforation, and gas-liquid part flow arrangement in the well section positioned at gas-bearing formation position
Bottom and liquid guiding tube top connect, between gas-liquid part flow arrangement and sleeve pipe pass through packer formation sealing so that in gas-bearing formation
Aqueous enter Part II space (below packer) after, aqueous is by bottom pressure, from hydrops area water conservancy diversion to packer
In casing annulus above；Again respectively by foam adding set and gas injection device via coiled tubing to packer top
Casing annulus in injection foaming agent and natural gas, in pit shaft foaming agent with aqueous after natural gas is stirred, mixed, shape
Into foam solution stream；Sleeve opening is lifted to by the energy of the natural gas of injection flow out to ground again.The water pumping gas production pattern, it is first
First it can not only avoid perforated interval from being submerged in water, contain shaft bottom water to the generation of near wellbore zone gas-bearing formation reverse osmosis suction phenomenon,
And then ensure that gas is unobstructed near wellbore zone seepage flow；And due to separately being flowed in gas-liquid after, gas is in gas production tubing string
Single-phase flow, the resistance without overcoming water so that after shaft bottom back pressure (being only gas column pressure) reduction, the tune of producing pressure differential
Control amplitude is greatly increased, it is possible thereby to extend the production time of gas well, improve the gas producting rate and recovery ratio in gas field.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are
Some embodiments of the present utility model, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of structural representation for water drainage gas production device that Fig. 1 provides for the utility model embodiment.
Reference：
1- valves；2- gas production tubing strings；3- sleeve pipes；
4- joints；5- packers；6- gas-liquid part flow arrangements；
7- is mended away from short tube；8- liquid guiding tubes；9- hydrops area；
10- check valves；11- perforations；12- coiled tubings；
13- injection pumps；14- foam tanks；15- compressors；
16- foam adding sets；17- gas injection devices.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Further to illustrate that the utility model is to reach technological means and effect that predetermined utility model purpose is taken,
Below in conjunction with accompanying drawing and preferred embodiment, embodiment, knot to the water drainage gas production device according to the present utility model application
Structure, feature and its effect, are described in detail as after.In the following description, what different " embodiment " or " embodiment " referred to differs
Surely it is same embodiment.In addition, the special characteristic, structure or feature in one or more embodiments can be by any suitable form groups
Close.
Before being illustrated to embodiment of the present utility model, first with regard to some concepts in natural gas extraction field
Explain：
Water drive gas reservoir
Domestic and international most natural gas pool, the partially or fully region on its border, all by stratum water (Bian Shui, bottom water,
Or side, bottom water coexist) surrounded；Such gas reservoir, with the decline of gas-bearing formation pressure, causes in by natural energy development process
Peripheral stratum water constantly invades gas reservoir, and gas well also will inevitably water outlet.Such gas reservoir is referred to as water drive gas reservoir.
A kind of structural representation for water drainage gas production device that Fig. 1 provides for the utility model embodiment, as shown in figure 1, this
Utility model embodiment provides a kind of water drainage gas production device, including gas production tubing string 2, sleeve pipe 3, gas-liquid part flow arrangement 6, liquid guiding tube
8th, coiled tubing 12, foam adding set 16 and gas injection device 17；Wherein, gas production tubing string 2, gas-liquid part flow arrangement 6 and liquid guiding tube 8
Positioned at the inside of sleeve pipe 3, sleeve pipe 3 is provided with perforation 11 in the well section positioned at gas-bearing formation position；Gas-liquid part flow arrangement 6 and sleeve pipe 3
Between by packer 5 formation seal, sleeve pipe 3 is divided into Part I space (space of packer more than 5) and second
Divide in space (space of the packer below 5), Part I space is used to keep in aqueous, and Part II space is used for the separation of gas-liquid
With temporary aqueous；The top of gas-liquid part flow arrangement 6 is connected with the bottom of gas production tubing string 2, forms gas output passage；Gas-liquid is shunted
The bottom of device 6 is connected with the top of liquid guiding tube 8, and the bottom of liquid guiding tube 8 is connected with check valve 10, for by the liquid in hydrops area
Body water conservancy diversion is in the Part I space of sleeve pipe 3；Coiled tubing 12 is lowered into casing annulus by the sleeve opening of sleeve pipe 3；Continuously
The bottom of oil pipe 12 is located at the preset height of the top of packer 5；The top of coiled tubing 12 respectively with foam adding set 16
Connected with gas injection device 17.
Specifically, the production process of traditional water drive gas reservoir would generally be divided into three phases, including：1) anhydrous gas production
The characteristics of stage, stage is that gas relies on natural energy, and ground is sprayed onto certainly.2) water flowing phase is taken, is the characteristics of the stage
With the output of gas, water body starts to invade gas reservoir, natural gas, a small amount of stratum water simultaneously seepage flow to after shaft bottom, by from
The castering action of jet body, gas carrier stratum water is together from ground is sprayed onto, and the production time in stage is relatively short.It is very aobvious
So, gas must pull against the resistance of water in tubing string, can just flow to ground；Inevitably reduce producing pressure differential, gas production speed
Degree is also synchronous to be declined.3) the characteristics of water pumping gas production stage, stage is being continuously increased with water yield, the resistance of gas flow
Increasing, gas well yield also begins to drastically decline；The gas of output can not give rise to shaft bottom water ground, only
By external force, the ponding in pit shaft is discharged into ground, normal production could be maintained.If the stage can not be in time by pit shaft
Water discharge, gas well would become hard to be able to maintain that normal production, or even water logging stop production.Therefore, it is how effective by pit shaft
Water discharge is very important.
The present embodiment is specifically described below by the principle and the course of work of water drainage gas production device.
In the present embodiment, as shown in figure 1, dotted line is the flow direction of natural gas in Fig. 1, solid line is the flowing side of aqueous
To double dot dash line is the flow direction of the foaming agent added in foam adding set.Wherein, hydrops area 9 is used to keep in liquid, example
Such as keep in aqueous.In addition, the bottom of gas-liquid part flow arrangement 6 is connected with the top of liquid guiding tube 8, gas-liquid part flow arrangement 6 and sleeve pipe 3 it
Between by packer 5 formation seal, sleeve pipe 3 is separated into Part I space (more than packer) and Part II space
(below packer)；Wherein, liquid guiding tube 8 is located in hydrops area 9.
In process of production, due to sleeve pipe 3 implemented in the well section positioned at gas-bearing formation position it is natural in perforation 11, reservoir
Gas and aqueous can be continuously flowed into the annular space of sleeve pipe 3 of the packer below 5 by perforation 11, i.e. the Part II of sleeve pipe
In space；Due to receiving the differentiation of gravity, now natural gas is by upward onlap at top, and aqueous will fall to product downwards
In liquid zone 9.Because the bottom of gas production tubing string 2 is connected with the top of gas-liquid part flow arrangement 6, the circulation passage of natural gas can be constituted,
Therefore, natural gas can be entered in gas production tubing string 2 by the threeway tubing string on gas-liquid part flow arrangement 6, and be flowed out by gas production tubing string 2
To ground.Because the bottom of gas-liquid part flow arrangement 6 is connected with the top of liquid guiding tube 8, lead between gas-liquid part flow arrangement 6 and sleeve pipe 3
Cross packer 5 and form sealing, and the bottom of liquid guiding tube 8 is connected with check valve 10, therefore, the aqueous in hydrops area 9 is in shaft bottom
Under pressure effect, by check valve 10, liquid guiding tube 8 and gas-liquid part flow arrangement 6, then on return ring to the sleeve pipe 3 of packer more than 5
In shape space, i.e., in the Part I space of sleeve pipe 3.Further, since gas and liquid are separated flowings, gas is in air collecting pipe
The resistance of water need not be overcome in post 2, and keeps single-phase flow so that flowing is unobstructed, flow velocity is fast, and due to gas-bearing formation perforated interval
Without hydrops, it can avoid and contain that reverse osmosis inhales the generation of phenomenons such as (water resistance gas).
In the annular space of sleeve pipe 3 alternatively, it is also possible to detect packer more than 5 using echometer (movable type) (not shown)
Liquid level, when detecting liquid level and reaching preset height, from foam adding set 16 via coiled tubing 12 to packer 5
Injection foaming agent in the casing annulus on top, meanwhile, the natural gas on ground is flowed out to from gas production tubing string 2, a portion is passed through
Gas injection device 17 is injected into the annular space of sleeve pipe 3 of packer more than 5.Foaming agent in pit shaft is mixed through natural gas agitation with aqueous
Afterwards, foam solution stream is formd, density is substantially reduced, in addition, from sleeve opening flowing out to ground by the energy of the natural gas of injection again
Face.Due to being injected separately into foaming agent and natural gas by foam adding set 16 and gas injection device 17, it can be ensured that the of sleeve pipe 3
In a part of annular space, i.e. the aqueous of packer more than 5 is discharged to ground in time, to ensure shaft bottom without ponding.
The water drainage gas production device that the utility model embodiment is provided, including gas production tubing string, sleeve pipe, gas-liquid part flow arrangement, draw
Liquid pipe, coiled tubing, foam adding set and gas injection device；Wherein, gas production tubing string, gas-liquid part flow arrangement and liquid guiding tube are located at set
The inside of pipe；Sleeve pipe is provided with perforation in the well section positioned at gas-bearing formation position；Pass through packing between gas-liquid part flow arrangement and sleeve pipe
Device formation sealing, Part I space and Part II space are divided into by sleeve pipe；Part I space is used to keep in aqueous；The
Two segment spaces are used for the separation of gas-liquid and temporary aqueous；The top of gas-liquid part flow arrangement is connected with the bottom of gas production tubing string, shape
Into gas output passage；The bottom of gas-liquid part flow arrangement and the top of liquid guiding tube are connected, and the bottom of liquid guiding tube is connected with check valve,
For in the Part I space by the liquid guide flow in hydrops area to sleeve pipe；Coiled tubing is lowered into set by the sleeve opening of sleeve pipe
In pipe ring is empty；The bottom of coiled tubing is located at the preset height above packer；The top of coiled tubing adds with foam respectively
Feeder apparatus and gas injection device connection.Because sleeve pipe implements perforation, and gas-liquid part flow arrangement in the well section positioned at gas-bearing formation position
Bottom and liquid guiding tube top connect, sealing is formd by packer between gas-liquid part flow arrangement and sleeve pipe, when in gas-bearing formation
Aqueous enter after Part II space (below packer), aqueous just can be by bottom pressure, from hydrops area water conservancy diversion
In casing annulus more than to packer；Again respectively by foam adding set and gas injection device via coiled tubing to envelope
Every injecting foaming agent and natural gas in the casing annulus on device top, foaming agent is stirred by natural gas with aqueous, mixed in pit shaft
After conjunction, foam solution stream is formd；Sleeve opening is lifted to by the energy of the natural gas of injection flow out to ground again.The draining is adopted
Gas pattern can not only avoid perforated interval from being submerged in water, contain shaft bottom water to the hair of near wellbore zone gas-bearing formation reverse osmosis suction phenomenon
It is raw, and then ensure that gas is unobstructed near wellbore zone seepage flow；And due to separately being flowed in gas-liquid after, gas is in gas production tubing string
Interior single-phase flow, the resistance without overcoming water so that after shaft bottom back pressure (being only gas column pressure) reduction, producing pressure differential
Regulation and control amplitude is greatly increased, it is possible thereby to extend the final of the production time of gas well, the gas producting rate for improving gas field and gas reservoir
Recovery ratio.
Further, as shown in figure 1, the foam adding set 16 includes foam tank 14 and injection pump 13；Wherein, foam tank
14 one end is connected with one end of injection pump 13, and the other end of injection pump 13 is connected with coiled tubing 12.
Specifically, in process of production, packer 5 can be detected by using echometer (movable type) (not shown)
More than the annular space of sleeve pipe 3 in liquid level, when liquid level reaches preset height, by injection pump 13 by the foaming in foam tank 14
Agent is injected into via coiled tubing 12 in the casing annulus on the top of packer 5；Meanwhile, the day on ground is flowed out to from gas production tubing string 2
Right gas, a portion is used for outer defeated, and another part can be injected into the annular space of sleeve pipe 3 of packer more than 5 by gas injection device
It is interior.Foaming agent in pit shaft mixed through natural gas agitation with aqueous after, form foam solution stream, density is substantially reduced；Again by
The energy of the natural gas of injection flows out to ground from sleeve opening, and this process is referred to as Municipal secondary effluent.In addition, preset height can basis
Actual conditions or experience are configured, such as can be 0.5m or 1m, for the specific value of preset height, the present embodiment
This is not restricted.
It is worth noting that, in actual applications, it be able to can be carried out continuously according to the water yield in shaft bottom, drainage procedure,
Can also intermittently it carry out.
Because by injecting foaming agent and natural gas into sleeve pipe on ground, the stratum water that will be stored in casing space is arranged
Go out ground, it may thereby be ensured that shaft bottom without be in ponding, and drainage procedure by using stratum energy draining with being arranged by external force
Water is combined together, and makes draining in time, actively, so as to avoid the generation that shaft bottom hydrops floods the phenomenons such as perforated interval.
Alternatively, as shown in figure 1, gas injection device 17 includes compressor 15；Wherein, one end of compressor 15 and gas production tubing string
2 top gas transmission line connection, the other end of compressor 15 is connected with coiled tubing 12.When monitoring that liquid level reaches preset height
When, the foaming agent in foam tank 14 is injected into via coiled tubing 12 in the casing annulus on the top of packer 5 by injection pump 13；
Meanwhile, the natural gas on ground is flowed out to from gas production tubing string 2, a portion is connected by compressor 15 with coiled tubing, directly
It is injected into the annular space of sleeve pipe 3 of packer more than 5, or the annular space of sleeve pipe 3 for being injected into packer more than 5 is compressed by compressor 15
It is interior, it is possible thereby to the stratum water discharge ground that will be stored in casing space, it can be ensured that shaft bottom is without ponding.
Alternatively, as shown in figure 1, packer 5 is located at the preset height more than at the top of gas-bearing formation.Due to packer 5 being set
At the certain altitude for being placed on gas-bearing formation top, the gas and liquid that are flowed into out of gas-bearing formation can be made in the Part II of sleeve pipe 3
In annular space, i.e., separated in space of the packer below 5, and the liquid discharged from hydrops area 9 can be temporarily stored in set
In the Part I annular space of pipe 3, the i.e. space of packer more than 5, it is possible thereby to complete one-level draining, not only cause gas-bearing formation
Perforated interval can avoid without hydrops and contain that reverse osmosis inhales (water resistance gas) and forms the generation of the phenomenons such as water cone.
Alternatively, as shown in figure 1, the water drainage gas production device, in addition to mend away from short tube 7；Wherein, one end away from short tube 7 is mended
It is connected with the bottom of gas-liquid part flow arrangement 6, mends the other end away from short tube 7 and be connected with the top of liquid guiding tube 8.Due to by mending away from short
Pipe 7 can adjust the length of gas production tubing string 2, it is possible thereby to improve the flexibility that water drainage gas production device is used.
Alternatively, it is connected, is mended with the bottom of gas-liquid part flow arrangement 6 by joint 4 as shown in figure 1, mending one end away from short tube 7
The other end away from short tube 7 is connected by joint 4 with the top of liquid guiding tube 8.Shunted due to that will be mended by joint away from short tube and gas-liquid
Device and liquid guiding tube connection, further ensure the use reliability of water drainage gas production device.
Alternatively, as shown in figure 1, the top of gas production tubing string 2 is connected by valve 1 with one end of gas injection device 17, gas production
The bottom of tubing string 2 is connected by joint 4 with the top of gas-liquid part flow arrangement 6.Natural gas is by the threeway on gas-liquid part flow arrangement 6
Tubing string enters in gas production tubing string 2, opens the valve 1 on gas production tubing string 2, and natural gas can flow out to ground.Due to passing through valve
The flow direction of natural gas is controlled, arrangement of making rational planning for can be carried out to the flow direction of natural gas.
Alternatively, as shown in figure 1, the other end of injection pump 13 is connected by valve 1 with coiled tubing 12.Due to passing through valve
Goalkeeper's injection pump and coiled tubing connection, it is possible thereby to the flexibly injection of control foaming agent.
Alternatively, as shown in figure 1, the other end of compressor 15 is connected by valve 1 with coiled tubing 12.Due to passing through valve
Goalkeeper's compressor and coiled tubing connection, it is possible thereby to the flexibly injection of control natural gas.
The water drainage gas production device that the utility model embodiment is provided, including gas production tubing string, sleeve pipe, gas-liquid part flow arrangement, draw
Liquid pipe, coiled tubing, foam adding set and gas injection device；Wherein, gas production tubing string, gas-liquid part flow arrangement and liquid guiding tube are located at set
The inside of pipe；Sleeve pipe is provided with perforation in the well section positioned at gas-bearing formation position；Pass through packing between gas-liquid part flow arrangement and sleeve pipe
Device formation sealing, Part I space and Part II space are divided into by sleeve pipe；Part I space is used to keep in aqueous；The
Two segment spaces are used for the separation of gas-liquid and temporary aqueous；The top of gas-liquid part flow arrangement is connected with the bottom of gas production tubing string, shape
Into gas output passage；The bottom of gas-liquid part flow arrangement and the top of liquid guiding tube are connected, and the bottom of liquid guiding tube is connected with check valve,
For in the Part I space by the liquid guide flow in hydrops area to sleeve pipe；Coiled tubing is lowered into set by the sleeve opening of sleeve pipe
In pipe ring is empty；The bottom of coiled tubing is located at the preset height above packer；The top of coiled tubing adds with foam respectively
Feeder apparatus and gas injection device connection.Because sleeve pipe implements perforation, and gas-liquid part flow arrangement in the well section positioned at gas-bearing formation position
Bottom and liquid guiding tube top connect, between gas-liquid part flow arrangement and sleeve pipe pass through packer formation sealing so that in gas-bearing formation
Aqueous enter Part II space (below packer) after, aqueous is by bottom pressure, from hydrops area water conservancy diversion to packer
In casing annulus above；Again respectively by foam adding set and gas injection device via coiled tubing to packer top
Casing annulus in injection foaming agent and natural gas, in pit shaft foaming agent with aqueous after natural gas is stirred, mixed, shape
Into foam solution stream；Sleeve opening is lifted to by the energy of the natural gas of injection flow out to ground again.The water pumping gas production pattern, it is first
First it can not only avoid perforated interval from being submerged in water, contain shaft bottom water to the generation of near wellbore zone gas-bearing formation reverse osmosis suction phenomenon,
And then ensure that gas is unobstructed near wellbore zone seepage flow；And due to separately being flowed in gas-liquid after, gas is in gas production tubing string
Single-phase flow, the resistance without overcoming water so that after shaft bottom back pressure (being only gas column pressure) reduction, the tune of producing pressure differential
Control amplitude is greatly increased, it is possible thereby to extend the production time of gas well, improve the gas producting rate and recovery ratio in gas field.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (9)
1. a kind of water drainage gas production device, it is characterised in that including：It is gas production tubing string, sleeve pipe, gas-liquid part flow arrangement, liquid guiding tube, continuous
Oil pipe, foam adding set and gas injection device；Wherein：
The gas production tubing string, the gas-liquid part flow arrangement and the liquid guiding tube are located at the inside of described sleeve pipe；Described sleeve pipe is in place
In being provided with perforation in the well section at gas-bearing formation position；
Sealed between the gas-liquid part flow arrangement and sleeve pipe by packer formation, sleeve pipe is divided into Part I space and the
Two segment spaces；The Part I space is used to keep in aqueous；The Part II space is used for the separation of gas-liquid and kept in
Aqueous；
The top of the gas-liquid part flow arrangement is connected with the bottom of the gas production tubing string, forms gas output passage；The gas-liquid
The bottom of part flow arrangement is connected with the top of the liquid guiding tube, and the bottom of the liquid guiding tube is connected with check valve, for by hydrops
Liquid guide flow in area is in the Part I space of described sleeve pipe；
The coiled tubing is lowered into casing annulus by the sleeve opening of described sleeve pipe；The bottom of the coiled tubing is located at packing
At preset height above device；The top of the coiled tubing connects with the foam adding set and the gas injection device respectively
Connect.
2. device according to claim 1, it is characterised in that the foam adding set includes：Foam tank and injection pump；
Wherein, one end of the foam tank is connected with one end of the injection pump, the other end of the injection pump and the coiled tubing
Connection.
3. device according to claim 1, it is characterised in that the gas injection device includes compressor；Wherein, the compression
One end of machine is connected with the top gas transmission line of the gas production tubing string, and the other end of the compressor connects with the coiled tubing
Connect.
4. device according to claim 1, it is characterised in that the packer is located at the preset height more than at the top of gas-bearing formation
Place.
5. the device according to claim any one of 1-4, it is characterised in that also include：Mend away from short tube；Wherein, it is described to mend
One end away from short tube is connected with the bottom of the gas-liquid part flow arrangement, and the other end of the benefit away from short tube is upper with the liquid guiding tube
Portion is connected.
6. device according to claim 5, it is characterised in that the one end of the benefit away from short tube passes through joint and the gas-liquid
The bottom connection of part flow arrangement, the other end of the benefit away from short tube is connected by joint with the top of the liquid guiding tube.
7. the device according to claim any one of 1-4, it is characterised in that the top of the gas production tubing string by valve with
One end connection of the gas injection device；The bottom of the gas production tubing string is connected by the top of joint and the gas-liquid part flow arrangement
Connect.
8. device according to claim 2, it is characterised in that the other end of the injection pump by valve with it is described continuous
Oil pipe is connected.
9. device according to claim 3, it is characterised in that the other end of the compressor by valve with it is described continuous
Oil pipe is connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720003197.3U CN206554901U (en) | 2017-01-03 | 2017-01-03 | Water drainage gas production device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720003197.3U CN206554901U (en) | 2017-01-03 | 2017-01-03 | Water drainage gas production device |
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| CN206554901U true CN206554901U (en) | 2017-10-13 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691523A (en) * | 2018-06-07 | 2018-10-23 | 四川省友邦石油化工科技有限公司 | A kind of concentric little oil pipe gas-lift working barrel and its airlift unit |
| CN110878684A (en) * | 2018-09-06 | 2020-03-13 | 中国石油天然气股份有限公司 | Water drainage gas production device |
| CN111173488A (en) * | 2020-03-16 | 2020-05-19 | 西安诚科石油工程技术服务有限公司 | Method for realizing production of gas well by using controllable shock wave |
| CN111364979A (en) * | 2020-03-23 | 2020-07-03 | 中国石油大学(华东) | Underground gas invasion monitoring system based on ultrasonic waves |
| CN111364959A (en) * | 2020-03-30 | 2020-07-03 | 中国石油天然气集团有限公司 | Foam drainage gas production device for simulating shaft injection and rod throwing and simulation method |
| CN114934762A (en) * | 2022-05-09 | 2022-08-23 | 中国地质大学（北京） | Heavy oil reservoir oil production method and oil production system thereof |
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2017
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691523A (en) * | 2018-06-07 | 2018-10-23 | 四川省友邦石油化工科技有限公司 | A kind of concentric little oil pipe gas-lift working barrel and its airlift unit |
| CN110878684A (en) * | 2018-09-06 | 2020-03-13 | 中国石油天然气股份有限公司 | Water drainage gas production device |
| CN111173488A (en) * | 2020-03-16 | 2020-05-19 | 西安诚科石油工程技术服务有限公司 | Method for realizing production of gas well by using controllable shock wave |
| CN111173488B (en) * | 2020-03-16 | 2021-11-30 | 西安诚科石油工程技术服务有限公司 | Method for realizing production of gas well by using controllable shock wave |
| CN111364979A (en) * | 2020-03-23 | 2020-07-03 | 中国石油大学(华东) | Underground gas invasion monitoring system based on ultrasonic waves |
| CN111364979B (en) * | 2020-03-23 | 2023-05-23 | 中国石油大学(华东) | Underground gas invasion monitoring system based on ultrasonic waves |
| CN111364959A (en) * | 2020-03-30 | 2020-07-03 | 中国石油天然气集团有限公司 | Foam drainage gas production device for simulating shaft injection and rod throwing and simulation method |
| CN111364959B (en) * | 2020-03-30 | 2022-08-02 | 中国石油天然气集团有限公司 | Foam drainage gas production device for simulating shaft injection and rod throwing and simulation method |
| CN114934762A (en) * | 2022-05-09 | 2022-08-23 | 中国地质大学（北京） | Heavy oil reservoir oil production method and oil production system thereof |
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