CN204571927U - Horizontal well ball seat instrument - Google Patents
Horizontal well ball seat instrument Download PDFInfo
- Publication number
- CN204571927U CN204571927U CN201520037569.5U CN201520037569U CN204571927U CN 204571927 U CN204571927 U CN 204571927U CN 201520037569 U CN201520037569 U CN 201520037569U CN 204571927 U CN204571927 U CN 204571927U
- Authority
- CN
- China
- Prior art keywords
- ball seat
- ball
- horizontal well
- pressure cover
- steel ball
- 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.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 210000000664 rectum Anatomy 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 9
- 239000002002 slurry Substances 0.000 abstract description 4
- 238000011010 flushing procedure Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a kind of horizontal well ball seat instrument, comprise urceolus, pressure cover and ball seat, in described urceolus, rear portion is by pin and ball seat pin joint, ball seat is anterior to spin with pressure cover, lead is distributed with along pressure cover front end face even circumferential, lead is socketed spring, and spring the inner is fixed with steel ball, and steel ball peaks at ball seat inner port place.Owing to carrying out technique scheme, the application can solve the risk that horizontal well steel ball can not be taken a seat, this horizontal well ball seat can avoid the appearance of this type of phenomenon, steel ball together with tubing string enter well both can carry out guarantee tubing string under enter tubing string internal and external pressure balance in process, also can carry out reacting cycle when putting in place under tubing string for slurry, well-flushing, ensureing the normal work of this instrument.
Description
Technical field
The utility model relates to the ball seat instrument that in a kind of oil gas well completion operation, horizontal well uses.
Background technology
Ball seat is a kind of for completing the downhole tool that hydraulic packer sets, and Main Function is: set head pipe post unobstructed, can circulate; Realize oil pipe inner blocking during set packer, carry out suppressing in oil pipe; Can shoot down after having set, realize the unobstructed of tubing string.Conventional ball seat is used for the packer setting of straight well section, and the operating process of set packer is: pitching → time ball is taken a seat → suppress set packer → shoot down ball seat.Steel ball is fall by the Action of Gravity Field of steel ball from well head to ball seat, and ball seat can be taken a seat smoothly at straight well section steel ball.But cannot take a seat in high angle hole section or net horizontal section steel ball, conventional ball seat can not meet packer and set requirement in high angle hole section or net horizontal section.Current high angle hole section or net horizontal section packer setting adopt the technique of pump-out type blocking valve (blind plugging) or pumping plug, but these two kinds of techniques exist the problem that can not circulate and replace slurry and have a big risk respectively.Therefore, a kind of instrument is needed to solve the problem of net horizontal section packer setting without reliable process, the operability of well casing post of improving the standard.
Summary of the invention
The purpose of this utility model is to propose a kind of steel ball and tubing string together falls in well, prevents steel ball from can not put in place, the horizontal well ball seat instrument causing packer normally not set.
The purpose of this utility model is achieved in that horizontal well ball seat instrument comprises urceolus, pressure cover and ball seat, in described urceolus, rear portion is by pin and ball seat pin joint, ball seat is anterior to spin with pressure cover, lead is distributed with along pressure cover front end face even circumferential, lead is socketed spring, spring the inner is fixed with steel ball, and steel ball peaks at ball seat inner port place.
Owing to carrying out technique scheme, the application can solve the risk that horizontal well steel ball can not be taken a seat, this horizontal well ball seat can avoid the appearance of this type of phenomenon, steel ball together with tubing string enter well both can carry out guarantee tubing string under enter tubing string internal and external pressure balance in process, also can carry out reacting cycle when putting in place under tubing string for slurry, well-flushing, ensureing the normal work of this instrument.
Accompanying drawing illustrates: the technical solution of the utility model is provided by following drawings and Examples:
Fig. 1 is horizontal well ball seat tool construction schematic diagram.
Legend: 1 urceolus, 2, pressure cover, 3, lead, 4, spring, 5, steel ball, 6, ball seat, 7, sealing ring, 8, pin.
Detailed description of the invention:
The utility model by the restriction of following embodiment, can not determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Embodiment: as shown in Figure 1, horizontal well ball seat instrument comprises urceolus 1, pressure cover 2 and ball seat 6, described urceolus 1 is the cavity body of open at both ends, within it rear portion is by pin 8 and ball seat 6 pin joint, ball seat 6 is anterior to spin with pressure cover 2, is distributed with lead 3, lead 3 is socketed spring 4 along pressure cover 2 front end face even circumferential, spring 4 the inner is fixed with steel ball 5, and steel ball 5 peaks at ball seat 6 inner port place.
Described ball seat 6 is the cavity body of open at both ends, and its inner port is the horn mouth that outer imperial palace is little, and within it port outer wall place offers external screw thread.In the middle part of ball seat 6, overcoat has sealing ring 7.
Described pressure cover 2 is the cavity body of open at one end, and its opening end offers internal thread, spins with ball seat 6, and on sealing end periphery, axial symmetry is distributed with jack, and jack internal fixtion has lead 3.
In order to ensure annular space area of passage, by pressure cover 2 a sectional analysis (for 3-1/2 " horizontal well ball seat open time area of passage).
Annulus area (supposing that ball seat is opened completely) between steel ball 5 and pressure cover 2:
Equivalent latus rectum:
The area of pressure cover 2 topped hole:
Equivalent latus rectum:
Known by calculating, when ball seat 6 is opened, the minimum place of area of passage is the annulus area between steel ball 5 and pressure cover 2, and minimum area is 1055mm
2, equivalent latus rectum is 36.66mm.
During use, the tubing string with horizontal well ball seat is entering in well process, and in well, liquid can promote liquid-driving steel ball 5 Compress Spring 4, and liquid enters in tubing string, can balance tubing string external and internal pressure.After tubing string puts in place, reacting cycle can be carried out for slurry, well-flushing, liquid-driving steel ball 5 Compress Spring 4, ball seat 6 conducting; After complete liquid, spring 4 promotes steel ball 5 and takes a seat, and ball seat 6 is closed, and during set packer, direct well head is just suppressed; After packer setting is complete, continue to suppress, cut off ball seat 6 place pin 8, partly all fall within urceolus 1 well, realizes tubing string unobstructed.
Above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease inessential technical characteristic according to actual needs, meet the needs of different situations.
Claims (4)
1. a horizontal well ball seat instrument, comprise, urceolus, pressure cover and ball seat, it is characterized in that: in described urceolus, rear portion is by pin and ball seat pin joint, ball seat is anterior to spin with pressure cover, is distributed with lead, lead is socketed spring along pressure cover front end face even circumferential, spring the inner is fixed with steel ball, and steel ball peaks at ball seat inner port place.
2. horizontal well ball seat instrument as claimed in claim 1, it is characterized in that: described ball seat is the cavity body of open at both ends, its inner port is the horn mouth that outer imperial palace is little, and within it port outer wall place offers external screw thread.
3. horizontal well ball seat instrument as claimed in claim 1, is characterized in that: described pressure cover is the cavity body of open at one end, and its opening end offers internal thread, spins with ball seat, and on sealing end periphery, axial symmetry is distributed with jack, and jack internal fixtion has lead.
4. horizontal well ball seat instrument as claimed in claim 1, is characterized in that: when ball seat is opened, the minimum place of area of passage is the annulus area between steel ball and pressure are covered, and minimum area is 1055mm
2, equivalent latus rectum is 36.66mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520037569.5U CN204571927U (en) | 2015-01-20 | 2015-01-20 | Horizontal well ball seat instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520037569.5U CN204571927U (en) | 2015-01-20 | 2015-01-20 | Horizontal well ball seat instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204571927U true CN204571927U (en) | 2015-08-19 |
Family
ID=53864581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520037569.5U Expired - Fee Related CN204571927U (en) | 2015-01-20 | 2015-01-20 | Horizontal well ball seat instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204571927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533342A (en) * | 2015-01-20 | 2015-04-22 | 中国石油化工股份有限公司 | Ball base tool for horizontal well |
-
2015
- 2015-01-20 CN CN201520037569.5U patent/CN204571927U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533342A (en) * | 2015-01-20 | 2015-04-22 | 中国石油化工股份有限公司 | Ball base tool for horizontal well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |