CN105275411B - Three layers of tubing string dispenser - Google Patents
Three layers of tubing string dispenser Download PDFInfo
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- CN105275411B CN105275411B CN201510770156.2A CN201510770156A CN105275411B CN 105275411 B CN105275411 B CN 105275411B CN 201510770156 A CN201510770156 A CN 201510770156A CN 105275411 B CN105275411 B CN 105275411B
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Abstract
The present invention relates to a kind of three layers of tubing string dispenser, including outer layer tubing string, intermediate layer tubing string and the internal layer tubing string being nested together；One end of the outer layer tubing string is provided with outer layer connection component, and one end of intermediate layer tubing string is provided with intermediate layer connection component, and one end of the internal layer tubing string is provided with internal layer connection component；The other end of the outer layer tubing string connects outer layer water injection pipe by outer layer reducer union, and the other end of the intermediate layer tubing string connects intermediate layer water injection pipe by intermediate layer reducer union, and the other end of the internal layer tubing string connects internal layer water injection pipe by internal layer reducer union.The oil reservoir of three layers of oil well of dispensing simultaneously can be achieved, the water-injection efficiency of oil well is improved, overall structure is simple, is easy to manufacture and installs, practical.
Description
Technical field
The invention belongs to oil-bearing stratum flooding engineering device technique field, more particularly to a kind of three layers of tubing string dispenser.
Background technology
After oil well input exploitation, with the growth of recovery time, oil reservoir energy itself will be constantly consumed, and cause oil reservoir
Pressure constantly declines, viscosity increase, and crude output greatly reduces, or even can stop production, and causes underground to remain a large amount of dead oils and adopts not
Out.In order to which the underground caused by making up after crude oil extraction is in debt, formation pressure is kept or improved, oil field stable high yield is realized,
And obtain higher recovery ratio, it is necessary to water filling is carried out to oil field.
For the oil field exploited at present, the oil reservoir of oil well can be summarized as to following several situations, some oil wells only have one
Individual oil reservoir, some oil wells contain multiple oil reservoirs.
Following several water injection technology methods can be divided into for different oil reservoirs：
1st, water injection through tubing and casing technique, can only be while two oil reservoirs of dispensing.
2nd, single pipe layered water filling, most five layers of water fillings once can only be to one layer of progress water filling, to another layer of progress water filling
When, it is necessary to carry out bailing to instrument, bailing workload is big.
3rd, multitube seperated layer water injection, can carry out water filling simultaneously, but can only two layers of dispensing according to current tubular column structure.
In summary, two layers of dispensing or individual layer oil reservoir simultaneously are only capable of in above-mentioned water injection technology, but can not be realized same
When three layers of oil reservoir of dispensing, therefore be urgent problem.
The content of the invention
The technical problems to be solved by the invention are：Offer is a kind of can be while three layers of tubing string of three layers of oil well oil reservoir of dispensing
Dispenser.
In order to solve the above technical problems, the technical scheme is that：A kind of three layers of tubing string dispenser, including be enclosed on
Outer layer tubing string, intermediate layer tubing string and internal layer tubing string together；
One end of the outer layer tubing string is provided with outer layer connection component, and the other end of the outer layer tubing string is connect by outer layer reducing
Head connection outer layer water injection pipe, one end of the intermediate layer tubing string is provided with intermediate layer connection component, the intermediate layer tubing string it is another
End connects intermediate layer water injection pipe by intermediate layer reducer union, and one end of the internal layer tubing string is provided with internal layer connection component, described
The other end of internal layer tubing string connects internal layer water injection pipe by internal layer reducer union.
As a further improvement, the outer layer connection component is outer lamellar spacing connecting hoop, the intermediate layer connection component
For intermediate layer gap connecting hoop, the internal layer connection component is interior lamellar spacing connecting hoop.
As a further improvement, the external diameter of the outer lamellar spacing connecting hoop is 105mm-116mm, the intermediate layer gap
The external diameter of connecting hoop is 69mm-74mm, and the external diameter of the interior lamellar spacing connecting hoop is 39mm-43mm；
The external diameter of the outer layer tubing string is 92mm-97mm, and internal diameter is 79mm-85mm, and the external diameter of the intermediate layer tubing string is
59mm-62mm, internal diameter is 49mm-54mm, and the external diameter of the internal layer tubing string is 32mm-35mm, and internal diameter is 25mm-29mm.
As a further improvement, the external diameter of the outer layer water injection pipe is 44mm-48mm, internal diameter is 43mm-47mm, described
The external diameter of intermediate layer water injection pipe is 32mm-35mm, and internal diameter is 25mm-29mm, and the external diameter of the internal layer water injection pipe is 16mm-
26mm, internal diameter is 4mm-12mm.
As a further improvement, the water filling port internal diameter of the outer layer water filling tube end is 43mm-47mm, the intermediate layer
The water filling port internal diameter of water filling tube end is 24mm-30mm, and the water filling port internal diameter of the internal layer water filling tube end is 4mm-10mm.
As a further improvement, being connected between the intermediate layer water injection pipe and the intermediate layer reducer union by connecting hoop
Connect.
As a further improvement, connected between the internal layer water injection pipe and the internal layer reducer union by a joint,
The outer surface of the joint is provided with annular groove, and the joint and the junction of the internal layer reducer union are provided with sealing ring, institute
The junction for stating joint and the internal layer water injection pipe also is provided with sealing ring.
Employ after above-mentioned technical proposal, the beneficial effects of the invention are as follows：
Due to three layers of tubing string dispenser, including outer layer tubing string, intermediate layer tubing string and the internal layer tubing string being nested together；Institute
The one end for stating outer layer tubing string is provided with outer lamellar spacing connecting hoop, and one end of intermediate layer tubing string is provided with intermediate layer gap connecting hoop, described
One end of internal layer tubing string is provided with interior lamellar spacing connecting hoop；The other end of the outer layer tubing string connects outer layer by outer layer reducer union
Water injection pipe, the other end of the intermediate layer tubing string connects intermediate layer water injection pipe, the internal layer tubing string by intermediate layer reducer union
The other end pass through internal layer reducer union connect internal layer water injection pipe.Using this three layers of tubing string dispensers, traditional note is solved
The water flooding regime of hydraulic art, can only two oil reservoirs of dispensing or the problem of once can only carry out water filling to one layer simultaneously, realize pair
Three layers of oil reservoir can be while the purpose of water filling, improves the water-injection efficiency of oil well, and overall structure is simple, is easy to manufacture and installs, practical
Property is strong.
Because the external diameter of the outer lamellar spacing connecting hoop is 105mm-116mm, the external diameter of the intermediate layer gap connecting hoop
For 69mm-74mm, the external diameter of the interior lamellar spacing connecting hoop is 39mm-43mm；The external diameter of the outer layer tubing string is 92mm-
97mm, internal diameter is 79mm-85mm, and the external diameter of the intermediate layer tubing string is 59mm-62mm, and internal diameter is 49mm-54mm, the internal layer
The external diameter of tubing string is 32mm-35mm, and internal diameter is 25mm-29mm.Using the standard clearance connecting hoop used in the art, and
By the outside dimension of the above-mentioned gap connecting hoop of optimization design, it is achieved thereby that between gap connecting hoop and oil well connecting device
Connection, is used while being nested together between the optimization design inside/outside diameter size of three-layer pipe post, Reliable guarantee three-layer pipe post, and phase
It is small―gap suture between adjacent two layers tubing string, and the size requirement of going into the well of common oil well can be met, it is reasonable in design.
Because the external diameter of the outer layer water injection pipe is 44mm-48mm, internal diameter is 43mm-47mm, the intermediate layer water injection pipe
External diameter be 32mm-35mm, internal diameter 25mm-29mm, the external diameter of the internal layer water injection pipe is 16mm-26mm, and internal diameter is 4mm-
12mm.The internal-and external diameter of water injection pipe is designed according to above-mentioned size respectively, satisfaction go into the well require while, can be connect by reducing
Head smoothly realizes the socket matching requirements between tubing string corresponding with above-mentioned difference, and can meet the requirement of water injection rate, Ke Yiman
The flushing operation of sufficient different depth, strong adaptability.
Due to being connected between intermediate layer water injection pipe and intermediate layer reducer union by connecting hoop, it can be realized by connecting hoop
The change demand of intermediate layer water filling length of tube, the job requirements of different depth oil well are met with this.
Due to being connected between internal layer water injection pipe and the internal layer reducer union by a joint, the outer surface of the joint is set
Have an annular groove for being easy to clamping, the junction of the joint and the internal layer reducer union is provided with sealing ring, the joint with
The junction of the internal layer water injection pipe also is provided with sealing ring.Joint is provided with annular groove, is easy to clamping internal layer water injection pipe to go into the well
Operation, while being provided with the sealing that sealing ring can ensure the internal layer water injection pipe of decentralization in the junction of joint, raising is used
Reliability.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of Fig. 1 center taps；
Fig. 3 is the structural representation connected between intermediate layer water injection pipe and intermediate layer reducer union by connecting hoop in Fig. 1；
Fig. 4 is internal layer tubing string, internal layer reducer union, joint and the structural representation of internal layer water injection pipe connection in Fig. 1；
In figure, 1, outer layer tubing string, 2, intermediate layer tubing string, 3, internal layer tubing string, 4, outer lamellar spacing connecting hoop, 5, intermediate layer gap
Connecting hoop, 6, interior lamellar spacing connecting hoop, 7, outer layer reducer union, 8, intermediate layer reducer union, 9, internal layer reducer union, 10, outer
Layer water injection pipe, 100, water filling port, 11, intermediate layer water injection pipe, 110, water filling port, 12, internal layer water injection pipe, 120, water filling port, 13, even
Box cupling, 14, joint, 140, groove, 141, sealing ring.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment one：
In as shown in Figure 1 to Figure 4 it is common shown in, a kind of three layers of tubing string dispenser, including be nested together outer layer tubing string 1,
Intermediate layer tubing string 2 and internal layer tubing string 3；
One end of outer layer tubing string 1 is provided with outer layer connection component, and the other end of outer layer tubing string 1 is connected by outer layer reducer union 7
Outer layer water injection pipe 10 is connect, one end of intermediate layer tubing string 2 is provided with intermediate layer connection component, and the other end of intermediate layer tubing string 2 is in
Interbed reducer union 8 connects intermediate layer water injection pipe 11, and one end of internal layer tubing string 3 is provided with internal layer connection component, internal layer tubing string 3 it is another
One end connects internal layer water injection pipe 12 by internal layer reducer union 9.Above-mentioned outer layer connection component, intermediate layer connection component and internal layer connect
Connected components, correspond to preferably outer lamellar spacing connecting hoop 4, intermediate layer gap connecting hoop 5 and interior lamellar spacing connecting hoop 6, certainly respectively
Also the connecting pipe of other inner hollows can be used, by the two ends of connecting pipe using the structure of threaded connection.
, can be by internal layer reducer union 9 in order to avoid the reducer union between two layers to the extension of tubing string there may be interference
Positioned at the top of intermediate layer reducer union 8, intermediate layer reducer union 8 is set to be located at the top of outer layer reducer union 7.
It is for the size range after the water filling port optimization design of above-mentioned tubing string, water injection pipe and water filling tube end：
The external diameter of outer lamellar spacing connecting hoop 4 is 105mm-116mm, and the external diameter of intermediate layer gap connecting hoop 5 is 69mm-
74mm, the external diameter of interior lamellar spacing connecting hoop 6 is 39mm-43mm；
The external diameter of outer layer tubing string 1 is 92mm-97mm, and internal diameter is 79mm-85mm, and the external diameter of intermediate layer tubing string 2 is 59mm-
62mm, internal diameter is 49mm-54mm, and the external diameter of internal layer tubing string 3 is 32mm-35mm, and internal diameter is 25mm-29mm.
The external diameter of outer layer water injection pipe 10 is 44mm-48mm, and internal diameter is 43mm-47mm, and the external diameter of intermediate layer water injection pipe 11 is
32mm-35mm, internal diameter 25mm-29mm, the external diameter of internal layer water injection pipe 12 is 16mm-26mm, and internal diameter is 4mm-12mm.
The internal diameter of the water filling port 100 of outer layer water filling tube end is 43mm-47mm, the water filling port of intermediate layer water filling tube end
110 internal diameter is 24mm-30mm, and the internal diameter of the water filling port 120 of internal layer water filling tube end is 4mm-10mm.
In addition, the water filling port design size of above-mentioned tubing string, water injection pipe and water filling tube end can be according to following specific sizes：
Outer layer tubing string 1：Use external diameter and wall thickness for：93.5mmX6.25mm large diameter oil pipe, internal diameter is 81mm；
Outer lamellar spacing connecting hoop 4 uses 3-1/2EU small―gap suture tubing couplings, and gap connecting hoop external diameter is 106.17mm；
Screw thread is the API 3-1/2EU screw threads of standard, and the two ends of outer layer tubing string 1 are all the external screw thread of the type, outer layer
The two ends of gap connecting hoop 4 are all the internal thread of the type, and internal and external threads twist-on can connect outer layer tubing string 1 and outer lamellar spacing
Box cupling 4 is connected.
Outer layer water injection pipe 10：Use external diameter for：55mm oil pipes, internal diameter is 45mm, and outer layer water injection pipe 10 passes through outer layer reducing
Joint is connected with outer layer tubing string 1, and the internal diameter of water filling port 100 of its end is 45mm.
If outer layer tubing string 1 is connected with outer layer water injection pipe 10 by the realization of outer layer reducer union 7, this outer layer reducer union 7
Two ends correspond to the internal diameter of outer layer tubing string 1 and outer layer water injection pipe 10 respectively and need to meet the small knot of the big one end internal diameter of one end internal diameter
Structure.As shown in fig. 1.
Intermediate layer tubing string 2：Use external diameter and wall thickness for：60.32mmX4.5mm NU oil pipe, internal diameter is 51.32mm；
Intermediate layer gap connecting hoop 5 uses 2-3/8NU small―gap suture tubing couplings, and the external diameter of intermediate layer gap connecting hoop 5
For 70mm；
Screw thread is the API 2-3/8NU screw threads of standard, and the two ends of intermediate layer tubing string 2 are all the external screw thread of the type, in
Between lamellar spacing connecting hoop 5 two ends be all the type internal thread, internal and external threads twist-on can by intermediate layer tubing string 2 with it is middle
Lamellar spacing connecting hoop 5 is connected.
Intermediate layer water injection pipe 11：Use external diameter and wall thickness for：33.4mmX3.38mm NU oil pipes, internal diameter is 26.64mm, in
Interbed water injection pipe 11 is connected by 1.315NU screw threads with intermediate layer tubing string 2, and the internal diameter of water filling port 110 of its end is 28mm；
Connecting hoop 13 uses 1.315NU small―gap suture box cuplings, and box cupling external diameter is 40mm；
Intermediate layer reducer union 8：Big end is 2-3/8NU screw threads, is connected with the intermediate layer tubing string 2 on top；Small end is
1.315NU screw threads, are connected with the connecting hoop 13 of bottom.
If intermediate layer tubing string 2 is connected with intermediate layer water injection pipe 11 by the realization of intermediate layer reducer union 8, this intermediate layer becomes
The internal diameter that the two ends of drive connector 8 correspond to intermediate layer tubing string 2 and intermediate layer water injection pipe 11 respectively needs to meet the big one end of one end internal diameter
The small structure of internal diameter.As shown in Figure 3.
Internal layer tubing string 3：Oil pipe use external diameter and wall thickness for：33.4mmX3.38mm NU oil pipes, internal diameter is 26.64mm；
Interior lamellar spacing connecting hoop 6 uses 1.315NU small―gap suture tubing couplings, and box cupling external diameter is 40mm；
Screw thread is the API 1.315NU screw threads of standard, and the two ends of internal layer tubing string 3 are all the external screw thread of the type, internal layer
The two ends of gap connecting hoop 6 are all the internal thread of the type, and internal and external threads twist-on can connect internal layer tubing string 3 and interior lamellar spacing
Box cupling 6 is connected；
Internal layer water injection pipe 12：Use external diameter and wall thickness for：22mmX6mm oil pipes, two ends are internal thread, and internal diameter is 10mm, its
The internal diameter of water filling port 120 of end is 7mm；
Internal layer reducer union 9：Big end is 1.315NU screw threads, is connected with the internal layer tubing string 3 on top；
Small end is M14X2 screw threads, is connected with the internal layer water injection pipe 12 of bottom；
The two ends of joint 14 are external screw thread, and external diameter is 22mm；
Screw thread uses M14X2 screw threads, and the two ends of internal layer water injection pipe 12 are all the internal thread of the type, and the two ends of joint 14 are
Internal layer water injection pipe 12 can be connected by the external screw thread of the type, internal and external threads twist-on with joint 14.Internal layer water injection pipe 12 and internal layer
The outer surface of joint 14 between reducer union 9 is provided with the annular groove 140 for being easy to clamping, joint 14 and internal layer reducer union 9
Junction is provided with sealing ring 141, and the junction of joint 14 and internal layer water injection pipe 12 also is provided with sealing ring 141, as shown in Figure 2.
If internal layer tubing string 3 is connected with internal layer water injection pipe 12 by the realization of internal layer reducer union 9, this internal layer reducer union 9
Two ends correspond to the internal diameter of internal layer tubing string 3 and internal layer water injection pipe 12 respectively and need to meet the small knot of the big one end internal diameter of one end internal diameter
Structure, as shown in Figure 4.
The structure that wherein above-mentioned intermediate layer water injection pipe 11 is integrally formed after being connected with connecting hoop 13 can use internal layer tubing string 3
The structure connected as one with interior lamellar spacing connecting hoop 6.
Embodiment two：
The present embodiment and the structure of embodiment one are essentially identical, and its difference is above-mentioned tubing string, water injection pipe, water injection pipe
The change in size of the water filling port of end, it is specific as follows：
Outer layer tubing string 1：Use external diameter for：96.84mm large diameter oil pipes, internal diameter is 85mm；
Outer lamellar spacing connecting hoop 4 uses 3-1/2EU small―gap suture tubing couplings, and outer lamellar spacing connecting hoop external diameter is 116mm；
Outer layer water injection pipe 10：Use external diameter for：58mm oil pipes, internal diameter is 47mm, and outer layer water injection pipe 10 passes through outer layer reducing
Joint is connected with outer layer tubing string, and the internal diameter of water filling port 100 of its end is 47mm.
Intermediate layer tubing string 2：Use external diameter for：62mm oil pipes, internal diameter is 54mm；
Intermediate layer gap connecting hoop 5 uses 2-3/8NU small―gap suture tubing couplings, and intermediate layer gap connecting hoop external diameter is
74mm；
Intermediate layer water injection pipe 11：Use external diameter for：35mm oil pipes, internal diameter is 29mm, and intermediate layer water injection pipe 11 passes through
1.315NU screw threads are connected with intermediate layer tubing string 2, and the internal diameter of water filling port 110 of its end is 30mm；
Connecting hoop 13 uses 1.315NU small―gap suture box cuplings, and box cupling is designed according to above-mentioned specific size, meets connection i.e.
Can；
Internal layer tubing string 3：Oil pipe use external diameter for：35mm oil pipes, internal diameter is 29mm；
Interior lamellar spacing connecting hoop 6 uses 1.315NU small―gap suture tubing couplings, and box cupling external diameter is 43mm；
Internal layer water injection pipe 12：Use external diameter for：26mm oil pipes, two ends are internal thread, and internal diameter is 12mm, the water filling of its end
120 internal diameters of mouth are 10mm；
The two ends of joint 14 are external screw thread, and external diameter is designed according to above-mentioned specific size, meet connection.
Embodiment three：
The present embodiment and the structure of embodiment one are essentially identical, and its difference is above-mentioned tubing string, water injection pipe, water injection pipe
The change in size of the water filling port of end, it is specific as follows：
Outer layer tubing string 1：Use external diameter for：92mm oil pipes, internal diameter is 79mm；
Outer lamellar spacing connecting hoop 4 uses 3-1/2EU small―gap suture tubing couplings, and outer lamellar spacing connecting hoop external diameter is 105mm；
Outer layer water injection pipe 10：External diameter is 54mm, and internal diameter is 43mm, is connected by outer layer reducer union 7 with outer layer tubing string 1,
And the internal diameter of water filling port 100 of its end is 43mm.
Intermediate layer tubing string 2：Use external diameter for：59.53mm oil pipes, internal diameter is 49mm；
Intermediate layer gap connecting hoop 5 uses 2-3/8NU small―gap suture tubing couplings, and intermediate layer gap connecting hoop external diameter is
69mm；
Intermediate layer water injection pipe 11：Use external diameter for：32mm oil pipes, internal diameter is 25mm, and intermediate layer water injection pipe 11 passes through
1.315NU screw threads are connected with intermediate layer tubing string 2, and the internal diameter of water filling port 110 of its end is 24mm；
Connecting hoop 13 uses 1.315NU small―gap suture box cuplings, and box cupling external diameter is designed according to above-mentioned specific size, the company of satisfaction
Connect；
Internal layer tubing string 3：Oil pipe use external diameter for：32mm oil pipes, internal diameter is 25mm；
Interior lamellar spacing connecting hoop 6 uses 1.315NU small―gap suture tubing couplings, and box cupling external diameter is 39mm；
Internal layer water injection pipe 12：Use external diameter and wall thickness for：16mm oil pipes, two ends are internal thread, and internal diameter is 6mm, its end
The internal diameter of water filling port 120 be 4mm；
The two ends of joint 14 are external screw thread, and external diameter is designed according to above-mentioned specific size, meet connection.
Certain above-mentioned tubing string, water injection pipe, the water filling port of water filling tube end, connecting hoop and joint design size can be
It is changed on the premise of meeting annexation in suitably sized scope, is not limited to above-mentioned specific size
On, and all annexations between above-mentioned three-layer pipe post, water injection pipe, reducer union using thread connecting mode or other
Be fixedly connected with mode, for example the mode of welding or box cupling etc., is no longer repeated one by one herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. three layers of tubing string dispenser, it is characterised in that including the outer layer tubing string, intermediate layer tubing string and inner tube being nested together
Post；
One end of the outer layer tubing string is provided with outer layer connection component, and the other end of the outer layer tubing string is connected by outer layer reducer union
Outer layer water injection pipe is connect, one end of the intermediate layer tubing string is provided with intermediate layer connection component, and the other end of the intermediate layer tubing string leads to
Intermediate layer reducer union connection intermediate layer water injection pipe is crossed, one end of the internal layer tubing string is provided with internal layer connection component, the internal layer
The other end of tubing string connects internal layer water injection pipe by internal layer reducer union；
The internal layer reducer union is located at the top of the intermediate layer reducer union, and the intermediate layer reducer union is located at described outer
The top of layer reducer union；
The lower end of the intermediate layer water injection pipe is stretched out in the lower end of the internal layer water injection pipe, and the lower end of the intermediate layer water injection pipe is stretched out
The lower end of the outer layer water injection pipe.
2. three layers of tubing string dispenser according to claim 1, it is characterised in that the outer layer connection component is outer layer
Gap connecting hoop, the intermediate layer connection component is intermediate layer gap connecting hoop, and the internal layer connection component connects for interior lamellar spacing
Box cupling.
3. three layers of tubing string dispenser according to claim 2, it is characterised in that outside the outer lamellar spacing connecting hoop
Footpath is 105mm-116mm, and the external diameter of the intermediate layer gap connecting hoop is outside 69mm-74mm, the interior lamellar spacing connecting hoop
Footpath is 39mm-43mm；
The external diameter of the outer layer tubing string is 92mm-97mm, and internal diameter is 79mm-85mm, and the external diameter of the intermediate layer tubing string is 59mm-
62mm, internal diameter is 49mm-54mm, and the external diameter of the internal layer tubing string is 32mm-35mm, and internal diameter is 25mm-29mm.
4. three layers of tubing string dispenser according to claim 3, it is characterised in that the external diameter of the outer layer water injection pipe is
44mm-48mm, internal diameter is 43mm-47mm, and the external diameter of the intermediate layer water injection pipe is 32mm-35mm, and internal diameter is 25mm-29mm,
The external diameter of the internal layer water injection pipe is 16mm-26mm, and internal diameter is 4mm-12mm.
5. three layers of tubing string dispenser according to claim 4, it is characterised in that the note of the outer layer water filling tube end
Mouth of a river internal diameter is 43mm-47mm, and the water filling port internal diameter of the intermediate layer water filling tube end is 24mm-30mm, the internal layer water filling
The water filling port internal diameter of tube end is 4mm-10mm.
6. according to any three layers of described tubing string dispenser of claim 1 to 5, it is characterised in that the intermediate layer water filling
Connected between pipe and the intermediate layer reducer union by connecting hoop.
7. three layers of tubing string dispenser according to claim 6, it is characterised in that the internal layer water injection pipe with it is described interior
Connected between layer reducer union by a joint, the outer surface of the joint is provided with annular groove, the joint and the internal layer
The junction of reducer union is provided with sealing ring, and the junction of the joint and the internal layer water injection pipe also is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510770156.2A CN105275411B (en) | 2015-09-10 | 2015-11-12 | Three layers of tubing string dispenser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520699552 | 2015-09-10 | ||
| CN2015206995526 | 2015-09-10 | ||
| CN201510770156.2A CN105275411B (en) | 2015-09-10 | 2015-11-12 | Three layers of tubing string dispenser |
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| CN105275411A CN105275411A (en) | 2016-01-27 |
| CN105275411B true CN105275411B (en) | 2017-11-07 |
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| CN201510770156.2A Active CN105275411B (en) | 2015-09-10 | 2015-11-12 | Three layers of tubing string dispenser |
| CN201520896915.5U Expired - Fee Related CN205135460U (en) | 2015-09-10 | 2015-11-12 | Three -layer oil pipe post divides annotates device |
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| CN105275411B (en) * | 2015-09-10 | 2017-11-07 | 山东墨龙石油机械股份有限公司 | Three layers of tubing string dispenser |
| CN109322646B (en) * | 2017-07-31 | 2023-10-31 | 中国石油天然气股份有限公司 | Separate injection pipe column for oil well water injection and use method |
| CN113431539A (en) * | 2021-07-05 | 2021-09-24 | 湖北茂思晟石油新技术开发有限公司 | Throwing-fishing type cableless concentric intelligent water distributor device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2058206U (en) * | 1988-11-24 | 1990-06-13 | 大港石油管理局钻采工艺研究院 | Slicing water-injection device |
| CN201843594U (en) * | 2010-11-11 | 2011-05-25 | 中国石油天然气股份有限公司 | Tubular column with fine separated layer water injection process |
| CN202544824U (en) * | 2012-03-27 | 2012-11-21 | 中国海洋石油总公司 | Concentric double-pipe hierarchical injection pipe column |
| CN104141477B (en) * | 2014-07-28 | 2017-01-25 | 克拉玛依市红都有限责任公司 | Concentric three-tube separated layer water injection device and using method thereof |
| CN105275411B (en) * | 2015-09-10 | 2017-11-07 | 山东墨龙石油机械股份有限公司 | Three layers of tubing string dispenser |
-
2015
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| CN205135460U (en) | 2016-04-06 |
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