CN205823258U - Horizontal well sits six sections of fracturing strings of pressure - Google Patents
Horizontal well sits six sections of fracturing strings of pressure Download PDFInfo
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- CN205823258U CN205823258U CN201620799610.7U CN201620799610U CN205823258U CN 205823258 U CN205823258 U CN 205823258U CN 201620799610 U CN201620799610 U CN 201620799610U CN 205823258 U CN205823258 U CN 205823258U
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Abstract
This utility model relates to a kind of horizontal well and sits six sections of fracturing strings of pressure.Mainly solve the problem that existing fractured horizontal well long construction period, working environment are severe.It is characterized in that: described straight well section seating nipple (2) is respectively connected with oil pipe plug valve (1) in two ends up and down, the oil pipe plug valve (1) of lower end is connected with horizontal segment seating nipple (21), horizontal segment seating nipple (21) other end connects hydraulic anchor (4) by safety joint (3), the other end of hydraulic anchor (4) is sequentially connected with 7 packers, the most each packer (6) two ends are respectively and fixedly provided with spiral centering device (5), are connected by sanding machine between adjacent two-stage screw centralizer.This horizontal well sit six sections of fracturing strings of pressure can fracturing without pulling string six sections, close oil pipe space during proposing tubing string after pressure break, have that efficiency of construction is high, the feature of safety and environmental protection.
Description
Technical field
This utility model relates to oilfield, and a kind of horizontal well sits six sections of fracturing strings of pressure.
Background technology
Along with the continuous propelling of fractured horizontal well region and the degree of depth, reservoir properties condition worse and worse, Regional tectonic conditions
Also become increasingly complex, cause fracturing reform difficulty to increase further.The double envelope single deck tape-recorder of the many employings of fractured horizontal well at present carries on layer by layer
Mode construct, need pressure release before upper lifting pipe post, cause that long construction period, resource occupation are many, working environment is severe；
Meet after pressure coefficient height block pressure break 2-3 section, bottom pressure height cause tubing string be difficult on carry, it is impossible to complete anticipated number of plies construction,
Causing and lose layer, abandon layer, unrealized horizontal well full well reservoir is effectively employed, and affects horizontal well production.
Summary of the invention
In order to overcome the severe deficiency of existing fractured horizontal well long construction period, working environment, this utility model provides
A kind of horizontal well sits six sections of fracturing strings of pressure, this horizontal well sit six sections of fracturing strings of pressure can fracturing without pulling string six sections, in pressure
Close oil pipe space during proposing tubing string after splitting, there is efficiency of construction height, the feature of safety and environmental protection.
The technical solution of the utility model is: a kind of horizontal well sits six sections of fracturing strings of pressure, including straight well section seating nipple and
Horizontal segment seating nipple, the upper and lower two ends of described straight well section seating nipple are respectively connected with oil pipe plug valve, the oil pipe plug valve of lower end and water
Flat section seating nipple is connected, and the horizontal segment seating nipple other end connects hydraulic anchor by safety joint, and the other end of hydraulic anchor connects successively
Connecing 7 packers, the most each packer two ends are respectively and fixedly provided with spiral centering device, by spray between adjacent two-stage screw centralizer
Sand device connects.
Described sanding machine is 6, be followed successively by one-level sanding machine, two grades of sanding machines, three grades of sanding machines, level Four sanding machine, five
Level sanding machine, six grades of sanding machines, above-mentioned one-level is sequentially reduced from left to right to the sliding sleeve internal diameter of Pyatyi sanding machine, wherein six grades of sprays
Connect on the spiral centering device of sand device right-hand member and have plug.
This utility model has the advantages that owing to taking such scheme, and this horizontal well sits six sections of fracturing strings of pressure
Horizontal segment oil pipe on contacted 7 inflatable packers and 6 sanding machines, sanding machine sliding sleeve internal diameter size is from top to bottom by greatly
To minispread, it is equipped with the steel ball of different-diameter respectively.By packer will pressure break interval insulate, utilize subordinate to be in work
Make the sanding machine pressure break orlop section of state, then use the mode of pitching skidding set to complete the construction of 5 fracturing sections above.?
After pressure break complete tubing string activity is opened, coordinate straight well section seating nipple above is thrown by oil pipe plug valve switch and block up, on tripping out
After the straight well section seating nipple in face, the horizontal segment seating nipple on following tool string top is thrown stifled.Thus efficiently solve oil field compression fracture
After trip out the problem of oil pipe overflow during tubing string, solve simultaneously and oilfield horizontal well pressing crack construction need carry on layer by layer to lead
The long construction period of cause, part interval abandon the problem of pressure, one-trip string pressure break six sections, close during proposing tubing string after pressure break
Oil pipe space, efficiency of construction is high, safety and environmental protection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1-oil pipe plug valve in figure, 2-straight well section seating nipple, 3-safety joint, 4-hydraulic anchor, 5-spiral centering device, 6-seals
Every device, 8-plug, 21-horizontal segment seating nipple, 71-one-level sanding machine, bis-grades of sanding machines of 72-, tri-grades of sanding machines of 73-, 74-level Four
Sanding machine, 75-Pyatyi sanding machine, six grades of sanding machines of 76-.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings:
As shown in Figure 1, a kind of horizontal well sits six sections of fracturing strings of pressure, including straight well section seating nipple 2 and horizontal segment seating nipple
21, described straight well section seating nipple about 2 two ends are respectively connected with oil pipe plug valve 1, and straight well section seating nipple about 2 two ends respectively connect two
It is connected with short circuit between individual oil pipe plug valve 1, and two oil pipe plug valves 1.Oil pipe plug valve 1 and the horizontal segment seating nipple of lower end
21 are connected, horizontal segment seating nipple 21 other end attachment security joint 3, and safety joint 3 other end connects hydraulic anchor 4, hydraulic anchor 4
The other end is sequentially connected with 7 packers 6, and each packer 6 two ends are respectively and fixedly provided with spiral centering device 5, and adjacent two-stage packer 6
Connecting between the spiral centering device 5 at two ends and have sanding machine, the spiral centering device 5 of low order end connects plug 8.Described sanding machine
Be 6, be followed successively by one-level sanding machine 72, three grades of sanding machines 73 of 71, two grades of sanding machines, level Four sanding machine 74, Pyatyi sanding machine 75,
Six grades of sanding machines 76, above-mentioned one-level is sequentially reduced from left to right to the sliding sleeve internal diameter of Pyatyi sanding machine, and its internal diameter size is by a left side extremely
The right side is followed successively by φ A, φ B, φ C, φ D, φ E, and wherein six grades of sanding machines 76 are without sliding sleeve, straight by the nozzle in sanding machine main body
Connect and add sand.
Time actually used, first successively by oil pipe plug valve 1, seating nipple 2, safety joint 3, hydraulic anchor 4, spiral shell on oil pipe
Rotation centralizer 5, packer at different levels 6, sanding machine at different levels and plug 8 connect as illustrated.After connecting, the six of subordinate
Level sanding machine 76 is in open mode, and other sanding machines at different levels are in closed mode, injects highly pressurised liquid and make envelope in tubing string
Set every device, carry out the pressing crack construction of bottommost interval.After the construction of this layer, Pyatyi sanding machine opened by the steel ball putting into φ E
The liquid outlet of 75, carries out the pressing crack construction of last layer section, and the rest may be inferred completes whole pressing crack construction process.When tripping out tubing string, first
Movable open tubular column, then closes straight well section oil pipe plug valve 1 topmost, slowly lays down the oil pipe above it, then on mention
The next oil pipe plug valve that short circuit is ined succession, closes this valve, opens oil pipe plug valve above, the supporting blocking of cylinder of devoting oneself to work
Device, cuts out oil pipe plug valve above, after opening following oil pipe plug valve, then opens oil pipe plug valve above, according to throwing
Straight well seating nipple 2 is carried out throwing by stifled standard to be blocked up.After tripping out this seating nipple, two oil pipes that straight well section seating nipple 2 lower end is connected
Plug valve repeats above-mentioned action, and it is stifled that the horizontal segment seating nipple 21 connecting tool string top carries out throwing.Thus effectively solve
Need to carry on layer by layer the long construction period that causes in oilfield horizontal well pressing crack construction, part interval abandons the problem of pressure, one-trip string
Pressure break six sections, closes oil pipe space during proposing tubing string after pressure break, and efficiency of construction is high, safety and environmental protection.
Claims (2)
1. horizontal well sits six sections of fracturing strings of pressure, including straight well section seating nipple (2) and horizontal segment seating nipple (21), its feature
It is: described straight well section seating nipple (2) is respectively connected with oil pipe plug valve (1) in two ends up and down, the oil pipe plug valve (1) of lower end and water
Flat section seating nipple (21) is connected, and horizontal segment seating nipple (21) other end connects hydraulic anchor (4), hydraulic anchor by safety joint (3)
(4) the other end is sequentially connected with 7 packers, and the most each packer (6) two ends are respectively and fixedly provided with spiral centering device (5), adjacent
Connected by sanding machine between two-stage screw centralizer.
Horizontal well the most according to claim 1 sits six sections of fracturing strings of pressure, it is characterised in that: described sanding machine is 6, depends on
Secondary for one-level sanding machine (71), two grades of sanding machines (72), three grades of sanding machines (73), level Four sanding machine (74), Pyatyi sanding machines
(75), six grades of sanding machines (76), above-mentioned one-level is sequentially reduced from left to right to the sliding sleeve internal diameter of Pyatyi sanding machine, wherein six grades of sprays
The upper connection of the spiral centering device (5) of sand device (76) right-hand member has plug (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620799610.7U CN205823258U (en) | 2016-07-27 | 2016-07-27 | Horizontal well sits six sections of fracturing strings of pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620799610.7U CN205823258U (en) | 2016-07-27 | 2016-07-27 | Horizontal well sits six sections of fracturing strings of pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205823258U true CN205823258U (en) | 2016-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620799610.7U Active CN205823258U (en) | 2016-07-27 | 2016-07-27 | Horizontal well sits six sections of fracturing strings of pressure |
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| Country | Link |
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| CN (1) | CN205823258U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219127A (en) * | 2017-06-28 | 2017-09-29 | 中国地质调查局油气资源调查中心 | Use for laboratory visualizes hydraulic fracturing physical simulating device and method |
| CN112554856A (en) * | 2020-12-01 | 2021-03-26 | 大庆油田有限责任公司 | Pipe post is pressed to successive layer shutoff formula multilayer seat suitable for big liquid measure |
-
2016
- 2016-07-27 CN CN201620799610.7U patent/CN205823258U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219127A (en) * | 2017-06-28 | 2017-09-29 | 中国地质调查局油气资源调查中心 | Use for laboratory visualizes hydraulic fracturing physical simulating device and method |
| CN112554856A (en) * | 2020-12-01 | 2021-03-26 | 大庆油田有限责任公司 | Pipe post is pressed to successive layer shutoff formula multilayer seat suitable for big liquid measure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |