CN108374647A - A kind of setting ball seat with secondary opening function - Google Patents
A kind of setting ball seat with secondary opening function Download PDFInfo
- Publication number
- CN108374647A CN108374647A CN201810210495.9A CN201810210495A CN108374647A CN 108374647 A CN108374647 A CN 108374647A CN 201810210495 A CN201810210495 A CN 201810210495A CN 108374647 A CN108374647 A CN 108374647A
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- setting
- ontology
- sets
- shear pin
- 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
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/04—Ball valves
Abstract
The invention discloses a kind of setting ball seats with secondary opening function, are segmented before transformation tubing string is set for oil gas field open hole packer and are set for slurry, open hole packer.By ontology, sealing ring, set sliding sleeve, set sliding sleeve shear pin, connection sliding sleeve, circulating port, connection sliding sleeve shear pin, pressure break port, lock ring, lock form.The present invention is connected to pressure difference sliding sleeve lower end in open hole packer completion tubular column, and float collar upper end can play the role of setting premise circulation canal, set packer and the spare pressure break channel of offer for liquid.It is compensated for causes first segment can not pressure break and then the defect that causes full well to be scrapped after packer setting since accidental cause pressure difference sliding sleeve can not be opened；Meanwhile it after setting sliding sleeve shear pin and cutting, setting sliding sleeve and moving down, circulation canal is closed, and prevents after float collar fails that liquid enters in oil pipe in well, avoids the well control risk during making a trip.
Description
Technical field
The invention belongs to well fracturing, Acidizing Technology field, more particularly to a kind of setting with secondary opening function
Ball seat.
Background technology
To improve oil/gas well well yield, horizontal well becomes a kind of effective means of hypotonic oil-gas field development in recent years.Its
Middle open-hole horizontal well becomes a kind of important completion methods of horizontal wells with big with formation-engaging surfaces product.Open-hole horizontal well segmentation changes
It makes and mostly uses open hole packer progress, wherein compression type open hole packer is high with its tool pressure-bearing, length is small, the low quilt of tripping in risk
Extensive use.It could complete to set since compression type open hole packer needs tubing string to suppress internal pressure, and setting ball seat can pass through throwing
Ball, which builds the pressure, to be provided open hole packer and sets pressure.
Common setting ball seat does not have secondary opening function in compression type open hole packer fracturing strings at present,
And mostly have fluid flow paths closing function, i.e., pitching build the pressure set packer when, it is built-in when pressure reaches certain value
Setting sliding sleeve shear pin can cut, and sliding sleeve moves down, and circulation canal is closed, and prevent since the outer liquid of pipe enters in pipe when float collar fails,
Lead to that well control risk occurs during making a trip.But the structure also has its own defective.Due to open hole packer staged fracturing
Technique first segment is to provide circulation passage after the unlatching of pressure difference sliding sleeve to complete pressure break, and pressure difference sliding sleeve reaches a level pressure by oil jacket
Difference could open.If pressure difference sliding sleeve ontology relief hole is blocked by mud or other accidental causes cause it normally-open, the
One section just can not normal pressure break just can not establish liquid flow all and simultaneously as setting ball seat circulation canal has been switched off
Road causes subsequent segment pressure break ball that can not pump in place, under conditions of upper seat internal diameter allows, can only be penetrated by coiled tubing
Channel is established in hole, increases construction risk, while may also need to abandon certain sections, to influence well yield；And for nothing
Method meets the well of coiled tubing perforation, or even directly whole well can be caused to scrap, and causes huge economic losses.
Invention content
It is an object of the invention to overcome the above-mentioned prior art, a kind of setting with secondary opening function is provided
Ball seat is pressed for setting preceding liquid circulation, packer setting and first segment pressure break, reduction open hole packer segmentation in special circumstances
Split process risk.
In order to achieve the above objectives, the present invention is achieved by the following scheme：
A kind of setting ball seat with secondary opening function, including ontology, be connected to sliding sleeve and set sliding sleeve；It is logical to set sliding sleeve
It crosses and sets sliding sleeve shear pin and be connected to sliding sleeve connection, be connected to sliding sleeve and connect with ontology by being connected to sliding sleeve shear pin；The top of ontology and
Lower part is separately connected pressure difference sliding sleeve and float collar by screw thread；Pressure break port is offered on ontology, is connected to sliding sleeve and is set on sliding sleeve
Offer several circulating ports；
It when assembly, sets sliding sleeve and is corresponded to respectively with the circulating port for being connected to sliding sleeve, ensure that liquid flow path is unimpeded, pass through
Pitching is forced into 25MPa, sets the cutting of sliding sleeve shear pin, sets sliding sleeve and move down, and is connected to sliding sleeve and sets the circulating port on sliding sleeve
Dislocation, liquid flow path are closed；
When pressure difference sliding sleeve can not be opened, it is forced into 55MPa, connection sliding sleeve shear pin is cut, and under pressure promotion, sets cunning
Set be connected to sliding sleeve and moves down, oil pipe and the liquid flow path on stratum, normal pressure break are established in the pressure break port exposing on ontology.
The present invention, which further improves, to be：
The upper end of ontology opens up the internal thread being connected with pressure difference sliding sleeve, and lower end opens up the external screw thread being connected with float collar.
The step moved up for limiting connection sliding sleeve is provided in ontology.
It is connected to sliding sleeve and sets and offer 4 circulating ports on sliding sleeve.
It is connected to a diameter of 22mm of the circulating port on sliding sleeve, sets a diameter of 20mm of the circulating port on sliding sleeve.
It sets and is provided with lock ring on the outside of sliding sleeve, be connected on the inside of sliding sleeve and be provided with row lock；It sets after sliding sleeve moves down,
Lock rings prevent from setting sliding sleeve reset on lock.
Compared with prior art, the invention has the advantages that：
The present invention has the setting ball seat of secondary opening function, can complete open hole packer fracturing strings premise and replace
It starches, building the pressure sets open hole packer and hanging packer；Meanwhile fluid course can be closed when set packer, it avoids floating
Annular space highly pressurised liquid enters in pipe after hoop failure, and causing to make a trip occurs well control risk.Well head continues to improve pressure, is slided in pressure difference
In the case that set can not be successfully unlatching, the present invention secondary can open, and establish fluid course, carries out first segment pressure break, avoids pressing
Poor sliding sleeve reduces pressure break hop count even whole well and scraps in the case of not opening, reduce economic loss.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
In figure, 1- ontologies；2- sealing rings；3- sets sliding sleeve；4- sets sliding sleeve shear pin；5- is connected to sliding sleeve；6- circulating ports；
7- is connected to sliding sleeve shear pin；8- pressure breaks port；9- lock rings；10- is latched.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings：
It is right by taking one is applied to the compression packer fracturing strings of Φ 152.4mm drill bit open-hole horizontal wells as an example
The present invention is described in further detail.
Referring to Fig. 1, the present invention has the setting ball seat of secondary opening function, by ontology 1, sealing ring 2, sets sliding sleeve 3, seat
Seal sliding sleeve shear pin 4, connection sliding sleeve 5, circulating port 6, connection sliding sleeve shear pin 7,10 composition of pressure break port 8, lock ring 9 and lock.This
1 upper and lower ends of body have internal and external threads, middle part to have pressure break port 8 respectively；It is connected to sliding sleeve 5 and is connected by being connected to sliding sleeve shear pin 7 and ontology 1
It connects, connection sliding sleeve 5 limits it by the step of ontology 1 and moves up；It is built the pressure to 55MPa or so connection sliding sleeve shear pin by pitching
7 cut, and are connected to sliding sleeve 5 and set sliding sleeve 3 and move down, oil pipe and the flow channel on stratum are established by pressure break port 8；It is connected to sliding sleeve
There are four the circulating ports 6 of diameter 22mm for 5 ontologies；It is connected to sealing of the sliding sleeve 5 by sealing ring 2 holding and ontology 1；Set sliding sleeve
3 tops are ball seat, and bottom is dead space, are fixed in connection sliding sleeve 5 by setting sliding sleeve shear pin 4, setting 3 ontology of sliding sleeve has four
The circulating port 6 of a diameter 20mm when assembly, sets sliding sleeve 3 and is corresponded to respectively with four ports for being connected to sliding sleeve 5, ensures liquid
Flow channel is unimpeded, and 25MPa is forced by pitching, set sliding sleeve shear pin 4 cutting, set sliding sleeve 3 and move down, be connected to sliding sleeve 5 and
The circulating port 6 set on sliding sleeve 3 misplaces, and liquid flow path is closed, meanwhile, it sets sliding sleeve 3 and passes through 10 lock of lock ring 9 and lock
It is scheduled on connection sliding sleeve 5, prevents from setting the reset of sliding sleeve 3.
Main body is by ontology 1, connection sliding sleeve 5 and sets sliding sleeve 3 and forms, wherein setting sliding sleeve 3 by setting 4 He of sliding sleeve shear pin
It is connected to sliding sleeve 5 to connect, and is connected to sliding sleeve 5 and is connect with ontology 1 by being connected to sliding sleeve shear pin 7, ontology 1 connects respectively down through screw thread
Connect pressure difference sliding sleeve and float collar.After open hole packer fracturing strings are down toward design position, turn on pump direct circulation, liquid is along stream
Dynamic channel after setting sliding sleeve 3 and the entrance lower tool of circulating port 6 being connected on sliding sleeve 5 by then flowing into outside pipe.Set packing
When device, well head puts into setting ball, and setting ball is seated at the ball seat for setting 3 top of sliding sleeve, and well head pressurization 25MPa or so is set
Sliding sleeve shear pin 4 is cut, and is set sliding sleeve 3 and is moved down, and circulating port 6 is closed, meanwhile, it sets sliding sleeve 3 and passes through 10 locking of lock ring 9 and lock
On connection sliding sleeve 5.When the accidental causes such as depositing due to mud and pressure difference sliding sleeve being caused to can not be successfully unlatching, it is forced into 55MPa,
It is connected to sliding sleeve shear pin 7 to cut, under pressure promotion, sets sliding sleeve 3, connection sliding sleeve 5 moves down, the dew of pressure break port 8 on ontology 1
Go out, establishes oil pipe and the liquid flow path on stratum, normal pressure break.The invention avoids after packer setting due to accidental cause
Pressure difference sliding sleeve, which can not be opened, to be caused to establish liquid flow path and then pressure break hop count is caused to reduce the wind that even full well is scrapped
Danger.
The principle of the present invention：
For open hole packer fracturing strings after design position, well head is pumped into KCl solution, and liquid passes through in former tubing string
Circulating port 6 enters the float collar of lower end along liquid flow path direction, and then enters oil jacket annular space, then is returned out from well head.When replacement amount reaches
When to design requirement, well head input and the matched setting ball of the present invention, by pumping spherical zone to the ball seat for setting sliding sleeve top
Place, fluid course block, and well head continues pumping liquid, and pressure rises, when pressure rises to 25MPa or so, sets sliding sleeve and cut
Nail 4 is cut, and under pressure promotion, is set sliding sleeve 3 and is moved down, and is set sliding sleeve 3 and is misplaced with the circulating port 6 being connected on sliding sleeve 5, liquid stream
Channel is thoroughly closed.At this point, setting sliding sleeve 3 and being limited by connection 5 top bar of sliding sleeve can not continue to move down, and due to 9 He of lock ring
The effect of lock 10, completion reset can not be moved up by setting sliding sleeve 3, it is ensured that the highly pressurised liquid after float collar failure of lower end in annular space
In can not managing, it is ensured that well control risk will not be occurred by making a trip.Continue to improve pressure, completes all open hole packers and set, give up
After play out feeding drilling rod, then dock with sealing drum with oil pipe connection tieback plug, well head direct weighting opening pressure difference sliding sleeve, progress
First segment pressure break.If since mud deposition or other accidental causes cause pressure difference sliding sleeve to can not be successfully unlatching, well head continues to improve
Pressure to 55MPa or so, cut by connection sliding sleeve shear pin 7, and connection sliding sleeve 5 moves down under the promotion for setting sliding sleeve 3, on ontology 1
Fracturing section mouth 8 exposes, and flow channel is established, and the normal pressure break of first segment can be carried out.Can not just carry out first segment pressure break, and this due to
Setting ball seat fluid course is closed, and can not establish flow channel in entire oil pipe, cause subsequent segment can not pitching complete pressure break,
In the case that upper seat internal diameter allows,
The above content is merely illustrative of the invention's technical idea, and protection scope of the present invention cannot be limited with this, every to press
According to technological thought proposed by the present invention, any change done on the basis of technical solution each falls within claims of the present invention
Protection domain within.
Claims (6)
1. a kind of setting ball seat with secondary opening function, which is characterized in that including ontology (1), connection sliding sleeve (5) and set
Sliding sleeve (3)；Sliding sleeve (3) is set to slide by being connected to sliding sleeve (5) connection, connection sliding sleeve (5) is connected to by setting sliding sleeve shear pin (4)
Set shear pin (7) is connect with ontology (1)；The upper and lower part of ontology (1) is separately connected pressure difference sliding sleeve and float collar by screw thread；Ontology
(1) it offers pressure break port (8) on, connection sliding sleeve (5) and sets and offer several circulating ports (6) on sliding sleeve (3)；
It when assembly, sets sliding sleeve (3) and is corresponded to respectively with the circulating port (6) for being connected to sliding sleeve (5), ensure that liquid flow path is smooth
It is logical, 25MPa is forced by pitching, sliding sleeve shear pin (4) cutting is set, sets sliding sleeve (3) and move down, sliding sleeve (5) is connected to and sets
Circulating port (6) dislocation on sliding sleeve (3), liquid flow path are closed；
When pressure difference sliding sleeve can not be opened, it is forced into 55MPa, connection sliding sleeve shear pin (7) is cut, and under pressure promotion, sets cunning
Set (3) is moved down with sliding sleeve (5) is connected to, and the pressure break port (8) on ontology (1) is exposed, and the liquid flowing for establishing oil pipe and stratum is logical
Road, normal pressure break.
2. the setting ball seat according to claim 1 with secondary opening function, which is characterized in that the upper end of ontology (1)
The internal thread being connected with pressure difference sliding sleeve is opened up, lower end opens up the external screw thread being connected with float collar.
3. the setting ball seat according to claim 1 with secondary opening function, which is characterized in that setting in ontology (1)
It is useful for the step that limitation connection sliding sleeve (5) moves up.
4. the setting ball seat according to claim 1 with secondary opening function, which is characterized in that connection sliding sleeve (5) and
It sets and offers 4 circulating ports on sliding sleeve (3).
5. the setting ball seat according to claim 1 or 4 with secondary opening function, which is characterized in that connection sliding sleeve (5)
On circulating port a diameter of 22mm, set a diameter of 20mm of the circulating port on sliding sleeve (3).
6. the setting ball seat according to claim 1 with secondary opening function, which is characterized in that set sliding sleeve (3)
Outside is provided with lock ring (9), and a row is provided on the inside of connection sliding sleeve (5) and latches (10)；It sets after sliding sleeve (3) moves down, lock ring
(9) it is locked on lock (10), prevents from setting sliding sleeve (3) reset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810210495.9A CN108374647B (en) | 2018-03-14 | 2018-03-14 | Setting ball seat with secondary opening function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810210495.9A CN108374647B (en) | 2018-03-14 | 2018-03-14 | Setting ball seat with secondary opening function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108374647A true CN108374647A (en) | 2018-08-07 |
| CN108374647B CN108374647B (en) | 2023-10-27 |
Family
ID=63018755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810210495.9A Active CN108374647B (en) | 2018-03-14 | 2018-03-14 | Setting ball seat with secondary opening function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108374647B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080707A (en) * | 2019-06-05 | 2019-08-02 | 杰瑞能源服务有限公司 | A kind of starting short circuit having secondary opening function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090200085A1 (en) * | 2008-02-11 | 2009-08-13 | Williams Danny T | System for drilling under-balanced wells |
| CN203175459U (en) * | 2013-03-26 | 2013-09-04 | 中国石油集团长城钻探工程有限公司 | Setting ball seat |
| CN103821488A (en) * | 2014-03-05 | 2014-05-28 | 中国石油化工股份有限公司 | Gradually-set and perforated fracturing pipe column and application method thereof |
| CN203626792U (en) * | 2013-12-10 | 2014-06-04 | 中国石油集团西部钻探工程有限公司 | Secondary ball injection compensation differential pressure sliding sleeve |
| CN105298460A (en) * | 2014-07-29 | 2016-02-03 | 中国石油化工股份有限公司 | Fracturing tool, fracturing pipe string and fracturing method |
| CN208073428U (en) * | 2018-03-14 | 2018-11-09 | 中国石油天然气股份有限公司 | A kind of setting ball seat with secondary opening function |
-
2018
- 2018-03-14 CN CN201810210495.9A patent/CN108374647B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090200085A1 (en) * | 2008-02-11 | 2009-08-13 | Williams Danny T | System for drilling under-balanced wells |
| CN203175459U (en) * | 2013-03-26 | 2013-09-04 | 中国石油集团长城钻探工程有限公司 | Setting ball seat |
| CN203626792U (en) * | 2013-12-10 | 2014-06-04 | 中国石油集团西部钻探工程有限公司 | Secondary ball injection compensation differential pressure sliding sleeve |
| CN103821488A (en) * | 2014-03-05 | 2014-05-28 | 中国石油化工股份有限公司 | Gradually-set and perforated fracturing pipe column and application method thereof |
| CN105298460A (en) * | 2014-07-29 | 2016-02-03 | 中国石油化工股份有限公司 | Fracturing tool, fracturing pipe string and fracturing method |
| CN208073428U (en) * | 2018-03-14 | 2018-11-09 | 中国石油天然气股份有限公司 | A kind of setting ball seat with secondary opening function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080707A (en) * | 2019-06-05 | 2019-08-02 | 杰瑞能源服务有限公司 | A kind of starting short circuit having secondary opening function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108374647B (en) | 2023-10-27 |
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