CN109138955A - A kind of solvable fracturing sliding bush of variable diameter spherically seated full-bore - Google Patents
A kind of solvable fracturing sliding bush of variable diameter spherically seated full-bore Download PDFInfo
- Publication number
- CN109138955A CN109138955A CN201810993933.3A CN201810993933A CN109138955A CN 109138955 A CN109138955 A CN 109138955A CN 201810993933 A CN201810993933 A CN 201810993933A CN 109138955 A CN109138955 A CN 109138955A
- Authority
- CN
- China
- Prior art keywords
- ball seat
- variable diameter
- piston rod
- solvable
- shaper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003466 welding Methods 0.000 claims abstract description 22
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 7
- 239000003721 gunpowder Substances 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 210000001109 blastomere Anatomy 0.000 claims 1
- 239000003814 drug Substances 0.000 claims 1
- 238000012856 packing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000003208 petroleum Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Damping Devices (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of solvable packing fracturing sliding bushs of variable diameter spherically seated full-bore, including ball seat shaper, casing short joint, solvable pressure break ball.Ball seat shaper is made of shell, piston rod, switch shrapnel, welding cylinder, spring, and piston rod lower part is against on the welding cylinder of connection switch elastic slice, and has spring connection between switch shrapnel；When ball seat shaper starts, piston downlink simultaneously infers welding cylinder, stretches out switch shrapnel.Casing short joint includes being shorted ontology, variable diameter ball seat, and variable diameter ball seat is fixed on casing short joint with pin, is incorporated to well with casing one, variable diameter ball seat lower part is notched cyclic structure.Before fracturing work, the switch shrapnel of ball seat shaper captures variable diameter ball seat, promotion variable diameter ball seat cutting fixing pin is simultaneously mobile to shaft bottom direction, it is influenced by the undergauge inclined-plane of casing short joint, the notched cyclic structure in variable diameter ball seat lower part can be gathered with the undergauge of casing short joint, realize the undergauge movement of variable diameter ball seat.
Description
Technical field
The present invention relates to the untraditional reservoirs Well Completion Engineering of Oil Reservoirs such as petroleum, natural gas field, especially a kind of underground fracture is used
The solvable fracturing sliding bush of variable diameter spherically seated full-bore.
Background technique
Unconventional petroleum resources have climbed up the stage of history as the important reliever relay of the following petroleum resources, but unconventional
Oil and gas reservoir all has the feature in fine and close, low hole, hyposmosis.At this stage, full-bore, huge discharge, unlimited pole fracturing technology be
The effective means of untraditional reservoir is transformed.
For the exploitation of this kind of untraditional reservoir, the main method using pumping bridge plug and perforation connection seat carries out reservoir pressure
It splits.Though the method can realize that huge discharge, full-bore, unlimited extreme pressure are split, need to bore except each section of pressure break is launched after the completion of pressure break
Bridge plug, construction risk is big, low efficiency and working length are by coiled tubing length limitation.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of solvable fracturing sliding bushs of variable diameter spherically seated full-bore, solve
It needs to bore existing for existing pumping bridge plug except bridge plug complex job, the solvable ball seat shaper and close taken off in pit shaft after the completion of pressure break
Blocking realizes that pit shaft full-bore, unlimited pole, huge discharge pressure break reduce the mesh of operating cost to realize raising operating efficiency
's.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that: a kind of variable diameter spherically seated full-bore is solvable
Fracturing sliding bush, including ball seat shaper, casing short joint, solvable pressure break ball, casing short joint include the change for being shorted ontology, solvable material
Diameter ball seat, the internal diameter for being shorted ontology are the variable diameter cylinder being small at both ends and big in the middle, the mistake of intermediate enlarged diameter section and both ends reduced diameter section
It crosses section and is respectively arranged with top guiding bevel phase and lower part guiding bevel phase；Variable diameter ball seat lower part is the ring with multiple axial gaps
Shape structure, variable diameter ball seat are fixed on the enlarged diameter section inner wall for being shorted ontology by fixing pin, and multiple axial gaps aim at down
Portion guiding surface section top.
Ball seat shaper includes shell, piston rod, switch shrapnel, spring, welding cylinder, has installation to live respectively in shell
The upper area of connecting rod and the lower area of installation switch shrapnel are filled in, is provided between upper area and lower area with through-hole
Partition, the through-hole that the straight-bar of piston rod passes through partition enters lower area, and the bottom surface of the piston portion of piston rod with every
Confined space is formed between plate, piston rod can be axially moved along outer casing inner wall, be relatively set in the side wall of lower area
A pair of of through hole, two switch shrapnels are respectively inserted in through hole and are weldingly connected integrally by welding cylinder, switched at two
Spring is additionally provided between elastic slice, the straight-bar lower part of piston rod is against on welding cylinder, when piston rod is axially moved,
Piston rod lower end can infer the welding cylinder between two switch shrapnels, and the top of switch shrapnel can be under spring force
Pop-up through hole rapidly.
The external screw thread connecting with gunpowder setting tool housing internal screw thread, the piston portion of piston rod are provided on the shell
On be provided with the internal screw thread connecting with gunpowder setting tool inner sleeve external screw thread, the motive force of gunpowder setting tool pushes piston rod
It is axially moved along outer casing inner wall.
The spring is 4, and the outer Thursday angle positioned at welding cylinder is arranged.
The outer tip end of the switch shrapnel has unilateral chamfering close to upper area side, convenient for above proposing ball seat shaper.
The beneficial effects of the present invention are:
1. the prefabricated casing short joint in underground of the invention only includes variable diameter ball seat and is shorted ontology, structure is simple, reliable for operation；
2. ball seat shaper is realized using spring clamping lock captures variable diameter ball seat, principle is feasible, structure is simple, construction safety
And it is conducive to recycling；
3. it is of the invention applied widely, oil pipe can be applied to according to construction environment appropriate reconstruction and casing fracturing is constructed；
4. the present invention realizes full-bore casing fracturing, in the current interval of not pressure break, casing (oil pipe) is shorted in minimum
Diameter is identical with casing (oil pipe) minimum diameter.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the solvable fracturing sliding bush of variable diameter spherically seated full-bore of the present invention.
Fig. 2 is the structural schematic diagram of ball seat shaper shell.
Fig. 3 is switch shrapnel, the three dimensional structure diagram for welding position between cylinder and spring.
Fig. 4 is the status diagram that ball seat shaper is not switched on
Fig. 5 is the status diagram that ball seat shaper is opened in predetermined position.
Fig. 6 is the status diagram that ball seat shaper is pumped to variable diameter ball seat position.
Fig. 7 is the status diagram of variable diameter ball seat undergauge.
Fig. 8 is that ball seat shaper fulfils assignment and above proposes the status diagram of recycling.
Fig. 9 is the status diagram that solvable pressure break ball is set.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and detailed description:
As shown in Figure 1-3, the solvable fracturing sliding bush of variable diameter spherically seated full-bore of the invention, including ball seat shaper II, set
Pipe is shorted I, solvable pressure break ball 9, and casing short joint I includes the variable diameter ball seat 2 for being shorted ontology 1, solvable material, is shorted the interior of ontology 1
Diameter is the variable diameter cylinder being small at both ends and big in the middle, and the changeover portion of intermediate enlarged diameter section and both ends reduced diameter section is respectively arranged with top
Guiding surface section 1-1 and lower part are oriented to bevel phase 1-2；2 lower part of variable diameter ball seat is the cyclic structure with multiple axial gap 2-1,
Variable diameter ball seat 2 is fixed on the enlarged diameter section inner wall for being shorted ontology 1 by fixing pin 3, and multiple axial gap 2-1 aim at lower part
The top guiding surface section 1-2；
Ball seat shaper II includes shell 4, piston rod 5, switch shrapnel 6, spring 7, welding cylinder 8, difference in shell 4
There are the upper area 4-1 of installation piston rod 5 and the lower area 4-2 of installation switch shrapnel 6, upper area 4-1 and lower region
Be provided with the partition 4-6 with through-hole 4-5 between the 4-2 of domain, the straight-bar 5-1 of piston rod 5 across partition 4-6 through-hole 4-5 into
Enter lower area 4-2, and form confined space 4-3 between the bottom surface and partition 4-6 of the piston portion 5-2 of piston rod 5, piston connects
Bar 5 can be axially moved along 4 inner wall of shell, be relatively set with a pair of of through hole 4-4 in the side wall of lower area 4-2, two are opened
It closes elastic slice 6 to be respectively inserted in through hole 4-4 and be weldingly connected integrally by welding cylinder 8, also be set between two switch shrapnels 6
It is equipped with spring 7, the lower part straight-bar 5-1 of piston rod 5 is against on welding cylinder 8, when piston rod 5 is axially moved, piston
5 lower end of connecting rod can infer the welding cylinder 8 between two switch shrapnels 6, and the top of switch shrapnel 6 can be acted in 7 power of spring
Lower pop-up through hole 4-4 rapidly.
The external screw thread connecting with gunpowder setting tool housing internal screw thread, the piston of piston rod are provided on the shell 4
The internal screw thread connecting with gunpowder setting tool inner sleeve external screw thread is provided on portion 5-2, the motive force of gunpowder setting tool, which pushes, lives
Connecting rod 5 is filled in be axially moved along 4 inner wall of shell.
The spring 7 is 4, and the outer Thursday angle positioned at welding cylinder 8 is arranged.
The outer tip end of the switch shrapnel 6 has unilateral chamfering close to the side upper area 4-1, is formed convenient for above mentioning ball seat
Device.
Shell and piston rod of the invention forms gunpowder chamber, and piston rod lower part is against the welding of connection switch elastic slice
There is spring connection on cylinder, and between switch shrapnel；When gunpowder fires, piston downlink simultaneously infers welding cylinder, makes switch shrapnel
It stretches out.Variable diameter ball seat is fixed on casing short joint with pin, and with casing together tripping in, variable diameter ball seat lower part is notched ring-type
Structure.Before fracturing work, the switch shrapnel of ball seat shaper captures variable diameter ball seat, and variable diameter ball seat is pushed to cut fixing pin simultaneously
It is mobile to shaft bottom direction, it is influenced by the undergauge inclined-plane of casing short joint, the notched cyclic structure in variable diameter ball seat lower part can be with casing
The undergauge of short circuit and gather, realize variable diameter ball seat undergauge movement.
Use process of the present invention is described in detail below:
Underground preset casing short joint I and ball seat shaper II, 2 lower part of variable diameter ball seat are that notched cyclic structure 2-1 can
To complete undergauge movement by the lower guiding surface 1-2 on casing short joint.When piston rod 5 is axially moved, piston connects
5 lower end of bar can infer the welding cylinder 8 between switch shrapnel 6, and switch shrapnel 6 can pop up rapidly under the effect of 7 elastic force of spring.
As shown in Figure 4, for ball seat shaper when not reaching predetermined position, switch shrapnel 6 is soldered the tightening of cylinder 8 in 4 inside nothing of shell
Method pop-up, as shown in Figure 5, after ball seat shaper reaches predetermined position, the starting of gunpowder setting tool pushes piston rod 5 downward
Movement, piston rod force cut welding cylinder 8, and under the elastic force of spring 7, switch shrapnel 6 pops up outward, and short with casing
1 inner wall is connect to be in contact.As shown in Figure 6, after the pop-up of ball seat shaper elastic slice, well head provides fluid circulation discharge capacity, pumps ball seat shape
It grows up to be a useful person forward, the guiding surface 1-1 along casing short joint 1 of switch shrapnel 6 is advanced to be contacted with 2 top edge of variable diameter ball seat.By Fig. 7 institute
Show, under the effect of ball seat shaper axial thrust, the fixing pin 3 that connection is shorted between ontology 1 and variable diameter ball seat 2 is cut,
While variable diameter ball seat 2 continues mobile to shaft bottom direction, the notched cyclic structure 2-1 in 2 lower part of variable diameter ball seat is along casing short joint 1
Lower guiding surface 1-2 movement, 2 undergauge of variable diameter ball seat, i.e. variable diameter operation are completed.As shown in Figure 8, after the completion of variable diameter, switch shrapnel 6
Unilateral chamfering structure can guarantee that construction cable smoothly above proposes ball seat shaper, and completes tubing and casing perforating job etc..By Fig. 9 institute
Show, after mentioning on switching tools, puts into solvable pressure break ball 9, block fractured interval, the pressing crack construction of current interval can be started.
In conclusion the contents of the present invention are not limited in the above embodiments, the knowledgeable people in same area can
Can propose other embodiments easily within technological guidance's thought of the invention, but this embodiment is included in this hair
Within the scope of bright.
Claims (4)
1. a kind of solvable fracturing sliding bush of variable diameter spherically seated full-bore, including ball seat shaper (II), casing short joint (I), solvable pressure
Blastomere (9), which is characterized in that casing short joint (I) includes the variable diameter ball seat (2) and pin (3) for being shorted ontology (1), solvable material,
The internal diameter for being shorted ontology (1) is the variable diameter cylinder being small at both ends and big in the middle, the changeover portion of intermediate enlarged diameter section and both ends reduced diameter section
It is respectively arranged with top guiding bevel phase (1-1) and lower part guiding bevel phase (1-2)；Variable diameter ball seat (2) lower part is with multiple axis
To the cyclic structure of notch (2-1), variable diameter ball seat (2) is fixed in the enlarged diameter section for being shorted ontology (1) by fixing pin (3)
On wall, multiple axial gaps (2-1) aim at lower part guiding top bevel phase (1-2)；
Ball seat shaper (II) includes shell (4), piston rod (5), switch shrapnel (6), spring (7), welds cylinder (8), outside
There is the upper area (4-1) of installation piston rod (5) in shell (4) respectively and the lower area (4-2) of switch shrapnel (6) be installed,
The partition (4-6) with through-hole (4-5) is provided between upper area (4-1) and lower area (4-2), piston rod (5)
Straight-bar (5-1) enters lower area (4-2) across the through-hole (4-5) of partition (4-6), and the piston portion (5-2) of piston rod (5)
Bottom surface and partition (4-6) between form confined space (4-3), piston rod (5) can be axially moved along shell (4) inner wall,
It is relatively set with a pair of of through hole (4-4) in the side wall of lower area (4-2), two switch shrapnels (6) are respectively inserted in through hole
It is weldingly connected integrally in (4-4) and by welding cylinder (8), is additionally provided with spring (7) between two switch shrapnels (6), it is living
Lower part straight-bar (5-1) of plug connecting rod (5) is against in welding cylinder (8), when piston rod (5) is axially moved, piston rod
(5) lower end can infer the welding cylinder (8) between two switch shrapnels (6), and the top of switch shrapnel (6) can be in spring (7)
Lower pop-up through hole (4-4) rapidly of power effect.
2. the solvable fracturing sliding bush of variable diameter spherically seated full-bore according to claim 1, which is characterized in that on the shell (4)
It is provided with the external screw thread connecting with gunpowder setting tool housing internal screw thread, is provided on the piston portion (5-2) of piston rod and fire
The motive force of the internal screw thread of medicine setting tool inner sleeve external screw thread connection, gunpowder setting tool pushes piston rod (5) along shell
(4) inner wall is axially moved.
3. the solvable fracturing sliding bush of variable diameter spherically seated full-bore according to claim 1, which is characterized in that the spring (7) is 4
It is a, it is located at the outer Thursday angle setting of welding cylinder (8).
4. the solvable fracturing sliding bush of variable diameter spherically seated full-bore according to claim 1, which is characterized in that the switch shrapnel
(6) outer tip end has unilateral chamfering close to the upper area side (4-1), convenient for above proposing ball seat shaper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810993933.3A CN109138955B (en) | 2018-08-29 | 2018-08-29 | Reducing ball seat type full-bore soluble fracturing sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810993933.3A CN109138955B (en) | 2018-08-29 | 2018-08-29 | Reducing ball seat type full-bore soluble fracturing sliding sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109138955A true CN109138955A (en) | 2019-01-04 |
| CN109138955B CN109138955B (en) | 2020-07-03 |
Family
ID=64828920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810993933.3A Active CN109138955B (en) | 2018-08-29 | 2018-08-29 | Reducing ball seat type full-bore soluble fracturing sliding sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109138955B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173232A (en) * | 2019-04-28 | 2019-08-27 | 天津市玛特瑞科技有限公司 | The well cementation sliding sleeve that a kind of solvable bridge plug of throwing type and cooperation bridge plug use |
| CN111021973A (en) * | 2019-12-18 | 2020-04-17 | 中国石油天然气股份有限公司 | Collecting ball type adapter and mounting method thereof |
| CN112392409A (en) * | 2020-11-14 | 2021-02-23 | 中国石油天然气股份有限公司 | Cable laying pipe switch sliding sleeve mechanism and using method thereof |
| CN112761566A (en) * | 2020-12-31 | 2021-05-07 | 湘潭大学 | Hoop stay rope type packer capable of reducing diameter inwards |
| CN113090210A (en) * | 2021-04-07 | 2021-07-09 | 中国石油大学(华东) | Reducing propelling movement short circuit device |
| CN113216919A (en) * | 2020-02-06 | 2021-08-06 | 中国石油天然气股份有限公司 | Layered fireflood injection pipe column |
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| CN106677755A (en) * | 2017-01-13 | 2017-05-17 | 东北石油大学 | Full-bore multistage-key switch type fracturing slide sleeve |
| CN106761640A (en) * | 2016-11-17 | 2017-05-31 | 东北石油大学 | Underground full-bore infinite stages sliding pin sliding sleeve switch |
| CN106894787A (en) * | 2017-03-06 | 2017-06-27 | 四机赛瓦石油钻采设备有限公司 | A kind of single deck tape-recorder watt big orifice bridging plug and its set method |
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| CN206972216U (en) * | 2017-03-23 | 2018-02-06 | 中石化石油工程技术服务有限公司 | The more cluster full-bore fracturing sliding bushs of ball-throwing type |
| CN207161042U (en) * | 2017-08-09 | 2018-03-30 | 诺斯石油工具(天津)有限公司 | One kind hydrolysis bridging plug |
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| US20110240295A1 (en) * | 2010-03-31 | 2011-10-06 | Porter Jesse C | Convertible downhole isolation plug |
| US20140083678A1 (en) * | 2012-09-27 | 2014-03-27 | D&L Manufacturing, Inc. | Ball seat for a well fracturing apparatus and method of making and using same |
| CN205714007U (en) * | 2016-04-27 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of down-hole string rotates and controls switch |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173232A (en) * | 2019-04-28 | 2019-08-27 | 天津市玛特瑞科技有限公司 | The well cementation sliding sleeve that a kind of solvable bridge plug of throwing type and cooperation bridge plug use |
| CN110173232B (en) * | 2019-04-28 | 2024-01-05 | 天津市玛特瑞科技有限公司 | Throwing type soluble bridge plug and well cementation sliding sleeve matched with bridge plug for use |
| CN111021973A (en) * | 2019-12-18 | 2020-04-17 | 中国石油天然气股份有限公司 | Collecting ball type adapter and mounting method thereof |
| CN111021973B (en) * | 2019-12-18 | 2023-10-31 | 中国石油天然气股份有限公司 | Collecting ball type adapter and installation method thereof |
| CN113216919A (en) * | 2020-02-06 | 2021-08-06 | 中国石油天然气股份有限公司 | Layered fireflood injection pipe column |
| CN112392409A (en) * | 2020-11-14 | 2021-02-23 | 中国石油天然气股份有限公司 | Cable laying pipe switch sliding sleeve mechanism and using method thereof |
| CN112761566A (en) * | 2020-12-31 | 2021-05-07 | 湘潭大学 | Hoop stay rope type packer capable of reducing diameter inwards |
| CN112761566B (en) * | 2020-12-31 | 2023-08-29 | 湘潭大学 | Hoop stay rope type packer capable of reducing inwards |
| CN113090210A (en) * | 2021-04-07 | 2021-07-09 | 中国石油大学(华东) | Reducing propelling movement short circuit device |
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| CN109138955B (en) | 2020-07-03 |
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Effective date of registration: 20210826 Address after: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd., No. 83, Second Street, economic and Technological Development Zone, Binhai New Area, Tianjin, 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
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