CN203441435U - Steam distributing valve with capability of ball injection for twice - Google Patents
Steam distributing valve with capability of ball injection for twice Download PDFInfo
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- CN203441435U CN203441435U CN201320474196.9U CN201320474196U CN203441435U CN 203441435 U CN203441435 U CN 203441435U CN 201320474196 U CN201320474196 U CN 201320474196U CN 203441435 U CN203441435 U CN 203441435U
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- valve
- sliding sleeve
- ball valve
- steam
- ball
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Abstract
The utility model provides a steam distributing valve with the capability of ball injection for twice. The steam distributing valve comprises a tubular valve body, an upper connector used for connecting an upper pipe section, a body and a lower connector used for connecting a lower pipe section are connected to the valve body from top to bottom in sequence, an upper steam injection port and a lower steam injection port are formed in the side wall of the body of the valve body, two ball valve sliding sleeves are sleeved in a cylindrical cavity of the valve body in a sliding way, each ball valve sliding sleeve is fixed in the valve body through a shear pin, and the two ball valve sliding sleeves are respectively used for sealing the two steam injection ports. During the pressurizing process, under the situation that the primary ball valve sliding sleeve (namely the ball valve sliding sleeve at the lower part) is locked with the valve body, the secondary ball valve sliding sleeve can be pressurized. The steam injection to the appointed heavy oil stratum can be performed as long as one of the two ball valve sliding sleeves is pressurized successfully. Therefore the steam distributing valve has the advantage of greatly lowering the failure probability of pressurizing of a slide valve. The steam distributing valve also has the advantages of effective control of construction cost, high efficiency of steam injection and obvious yield-increasing effect due to the fact a high-power cement truck does not need to be used for pressurizing forcedly.
Description
Technical field
The utility model relates to thick oil filling air catalytic oxidation oil recovery development field, espespecially a kind of steam distributing valve that can twice pitching.
Background technology
In order to improve oil-field thick-oil well, super heavy oil wells development effectiveness, in heavy oil wells, super heavy oil wells, conventionally to implement air catalytic oxidation and recover the oil, air catalytic oxidation is that the steam by air injection and HTHP in oil well is achieved.Because the crude oil viscosity of each oil reservoir is different, so the effect of increasing production of choosing layer air injection and steam is more desirable than the effect of increasing production of general air injection and steam, so the normal pitching steam distributing valve that adopts selects notes equipment as down-hole in prior art.
Pitching steam distributing valve is the steam distributing valve valve body of connecting tubular in working string, a ball valve sliding sleeve is fixed in body cavity by shear pin, and the steam injection mouth of offering on the outer wall seal valve body wall of ball valve sliding sleeve.During elected layer steam injection operation, first pitching is also noted boiler by heat and is suppressed ball valve sliding sleeve, shear pin fracture under press-cutting effect, ball valve sliding sleeve down sliding locks, thereby seal and separate the tubing string of bottom, be communicated with top tubing string and steam injection mouth, make air and steam be flowed into selected oil reservoir.
But in implementation process, due to assembling mismate, add higher the produced heat expansion effect of temperature in tubing string, numeral according to statistics, 1% the heavy oil wells of can having an appointment, in suppressing operation, its ball valve sliding sleeve and valve interior wall produce interference fit, cause after pitching pressurization, and the powerful stiction that top-down shearing force and sliding sleeve sidewall interference fit produce offsets, shear pin can not be cut off, cannot be to selected heavy oil tested layer steam injection.In this case, if need to force to cut off shear pin, just need to suppress processing with powerful cementing truck, increase construction cost; The liquid of using while simultaneously forcing to suppress is the sewage of multi-purpose station, and after sewage enters well preheating, vaporization can absorb a large amount of heats, has also greatly affected effect of increasing production.
In view of the defect that above-mentioned known technology exists, inventor of the present utility model is according to the Production design experience of being engaged in for many years this area and association area, works out a kind of steam distributing valve that can twice pitching of the present utility model.
Utility model content
The purpose of this utility model, is to provide a kind of steam distributing valve that can twice pitching, by two-stage ball valve sliding sleeve is set in steam distributing valve valve body, overcomes the defect described in background technology.
The utility model provides a kind of steam distributing valve that can twice pitching, steam distributing valve has tubular valve body, valve body be connected with in turn from top to bottom to connect the top connection, body of upper tubular section with in order to be connected the lower contact of lower tubular section, described valve body offers upper and lower two steam injection mouths on the sidewall of described body, in the cylindricality cavity of described valve body, slip cap is provided with two ball valve sliding sleeves, each ball valve sliding sleeve is fixed in valve body by shear pin, and seals respectively described two steam injection mouths.
Each ball valve sliding sleeve of steam distributing valve as above has the centre bore running through vertically, and the upper end of centre bore has ball seat part for this centre bore of corresponding ball seal.
Steam distributing valve as above, wherein, the diameter of the centre bore of the ball valve sliding sleeve below being positioned at is less than the diameter of the centre bore of the ball valve sliding sleeve that is positioned at top.
The inner chamber of the valve body of steam distributing valve as above has ring convex shoulder to lock the ball valve sliding sleeve of down sliding below two ball valve sliding sleeves.
Each ball valve sliding sleeve of steam distributing valve as above is provided with two O RunddichtringOs in the both sides up and down of corresponding steam injection mouth respectively.
By above technical scheme, advantage and disadvantage of the present utility model is:
That at thick oil filling air catalytic oxidation, recovers the oil suppresses in operation process, if run into the situation of one-level ball valve sliding sleeve (being positioned at the ball valve sliding sleeve of below) and valve body locking, can to secondary ball valve sliding sleeve, suppress again, as long as have a quilt to suppress successfully in two-stage ball valve sliding sleeve, just can be to specifying heavy oil tested layer to carry out steam injection.Therefore, the utlity model has the advantage that very big reduction guiding valve is suppressed probability of failure, without re-using high-power cementing truck, force to suppress, thereby there is effective control construction cost, the advantage such as steam injection efficiency is high, effect of increasing production is obvious.
For making goal of the invention of the present utility model, technological means and technique effect have more complete and clearly disclose, be below elaborated, and see also accompanying drawing and parts label.
Accompanying drawing explanation
Fig. 1 is the integrally-built schematic diagram that partly cuts open of the utility model.
The specific embodiment
First it should be noted that, in the utility model, the term of all references " on " all refer to the direction of leading to well head along tubing string axis; And the term D score of all references all refers to the direction of leading to shaft bottom along tubing string axis; It should be noted that this "up" and "down" may be different from the "up" and "down" of gravity direction, for example, apply situation of the present utility model at horizontal well.
The utility model relates to a kind of when injecting selected oil reservoir simultaneously and recover the oil by air, steam and/or with chemical agent, needed a kind of downhole tool, be specially a kind of steam distributing valve that can twice pitching, refer to shown in Fig. 1, steam distributing valve has tubular valve body, valve body be connected with in turn from top to bottom to connect the top connection 1, body 2 of upper tubular section with in order to be connected the lower contact 3 of lower tubular section, body 2 upper ends are connected with top connection 1 by screw thread, and lower end is connected with lower contact 3 by screw thread;
Described valve body offers upper and lower two steam injection mouths 22 on the sidewall of body 2, in the cylindricality cavity of described valve body, slip cap is provided with two ball valve sliding sleeves 4 (5), be respectively one-level ball valve sliding sleeve 5 and secondary ball valve sliding sleeve 4, each ball valve sliding sleeve is fixed in valve body by shear pin 21, and seals respectively described two steam injection mouths 22.
Wherein, each ball valve sliding sleeve 4 (5) has the centre bore 41 (51) running through vertically, and the upper end of centre bore 41 (51) has ball seat part 42 (52) and seals this centre bore 41 (51) for corresponding spheroid (not shown).
Wherein, the diameter of centre bore 51 that is positioned at the one-level ball valve sliding sleeve 5 of below is less than the diameter of the centre bore 41 of the secondary ball valve sliding sleeve 4 that is positioned at top.
Further, the inner chamber of valve body has ring convex shoulder 23 to lock the one-level ball valve sliding sleeve 5 of down sliding below one-level ball valve sliding sleeve 5.Certainly the design of ring convex shoulder 23 is necessary absolutely not, because ball valve slides in the process of down sliding, can make steam injection mouth be communicated with epimere tubing string, and the ball valve sliding sleeve that now loses the power of suppressing also can stop gliding by the frictional force of sidewall.
In addition, each ball valve sliding sleeve 4 (5) is provided with two O RunddichtringOs 43 (53) in the both sides up and down of corresponding steam injection mouth 22 respectively, with seal ball-valve sliding sleeve 4 (5) and body 2.
Further, the spacing distance on the top of the bottom of secondary ball valve sliding sleeve 4 and one-level ball valve sliding sleeve 5 should meet when the shear pin 21 at secondary ball valve sliding sleeve 4 places is cut off, secondary ball valve sliding sleeve 4 slide down to one-level ball valve sliding sleeve 5 phase contacts before or just during phase contact, just can be communicated with the inner chamber of steam injection mouth 22 and valve body.
During elected layer steam injection operation, first from well head, cast the ball corresponding with one-level ball valve sliding sleeve 5 (ball that diameter is less), under the effect of gravity, make in its ball seat part 52 that drops on one-level ball valve sliding sleeve 5, the downward passage of sealing tubing string, now start to note boiler by heat and suppress one-level ball valve sliding sleeve 5, when pressure reach shear pin 21 cut off pressure time, shear pin 21 is cut off, one-level ball valve sliding sleeve 5 is forced to glide, and makes steam injection mouth 22 no longer sealed and be communicated with the inner chamber of epimere tubing string; After steam injection mouth 22 exposes, the power of suppressing no longer acts on sliding sleeve, and one-level ball valve sliding sleeve 5 stops gliding and seals all the time hypomere tubing string; Can complete thus to the preparation of selected oil reservoir steam injection.
Yet when one-level ball valve sliding sleeve 5 produces interference fit because there is abnormal assembling with valve interior wall, operation is suppressed in pitching cannot open one-level ball valve sliding sleeve 5, now need to cast the ball corresponding with secondary ball valve sliding sleeve 4 (ball that diameter is larger) from well head, make in its ball seat part 42 that drops on secondary ball valve sliding sleeve 4, the downward passage of sealing tubing string, now reusable heat is noted boiler and is suppressed secondary ball valve sliding sleeve 4, when pressure reach shear pin 21 cut off pressure time, shear pin 21 is cut off, secondary ball valve sliding sleeve 4 is forced to glide, make corresponding steam injection mouth 22 no longer sealed and be communicated with the inner chamber of epimere tubing string, after steam injection mouth 22 exposes, the power of suppressing no longer acts on sliding sleeve, and secondary ball valve sliding sleeve 4 stops gliding and seals all the time hypomere tubing string, so can complete equally to the preparation of selected oil reservoir steam injection.
Certainly, secondary ball valve sliding sleeve 4 is also likely because assembling reason occurs and the situation of body cavity locking, but in view of producing the probability very little (1%) of this kind of event, so adopt two-stage ball valve sliding sleeve to carry out in the situation of dual fail-safe design, can there are (ten thousand/ probability) in the situation that locking occurs two-stage ball valve sliding sleeve simultaneously hardly.So, the utility model has reduced the adverse effect because occurring that steam distributing valve is not opened and adopted operation to noting in air injection and steam course, also reduced the workload of not opening and increasing because of steam distributing valve in prior art simultaneously, more meet the requirement that current safety is produced, be conducive to environmental protection, and, alleviated site operation personnel's labour intensity.
Above for being only the schematic part embodiment of the utility model; not in order to limit scope of the present utility model; any those skilled in the art; do not departing from equivalent variations and the modification of having done under the prerequisite of design of the present utility model and principle, within all should being included in this patent protection domain.
Claims (5)
- One kind can twice pitching steam distributing valve, there is tubular valve body, valve body be connected with in turn from top to bottom to connect the top connection, body of upper tubular section with in order to be connected the lower contact of lower tubular section, it is characterized in that, described valve body offers upper and lower two steam injection mouths on the sidewall of described body, in the cylindricality cavity of described valve body, slip cap is provided with two ball valve sliding sleeves, and each ball valve sliding sleeve is fixed in valve body by shear pin, and seals respectively described two steam injection mouths.
- 2. steam distributing valve according to claim 1, is characterized in that, described in each, ball valve sliding sleeve has the centre bore running through vertically, and the upper end of centre bore has ball seat part for this centre bore of corresponding ball seal.
- 3. steam distributing valve according to claim 2, is characterized in that, the diameter of the centre bore of the ball valve sliding sleeve below being positioned at is less than the diameter of the centre bore of the ball valve sliding sleeve that is positioned at top.
- 4. steam distributing valve according to claim 2, is characterized in that, the inner chamber of described valve body has ring convex shoulder to lock the ball valve sliding sleeve of down sliding below two ball valve sliding sleeves.
- 5. according to the steam distributing valve described in claim 1-4 any one, it is characterized in that, described in each, ball valve sliding sleeve is provided with two O RunddichtringOs in the both sides up and down of corresponding steam injection mouth respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474196.9U CN203441435U (en) | 2013-08-05 | 2013-08-05 | Steam distributing valve with capability of ball injection for twice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474196.9U CN203441435U (en) | 2013-08-05 | 2013-08-05 | Steam distributing valve with capability of ball injection for twice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203441435U true CN203441435U (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320474196.9U Expired - Fee Related CN203441435U (en) | 2013-08-05 | 2013-08-05 | Steam distributing valve with capability of ball injection for twice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203441435U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314542A (en) * | 2014-09-24 | 2015-01-28 | 中国石油天然气股份有限公司 | Air injection-assisted steam oil recovery tube pillar and oil recovery method |
| CN109025934A (en) * | 2018-08-15 | 2018-12-18 | 中国石油天然气股份有限公司 | Reversible steam injection valve |
| CN109025933B (en) * | 2018-08-15 | 2020-12-01 | 中国石油天然气股份有限公司 | Preheating type steam distribution valve |
-
2013
- 2013-08-05 CN CN201320474196.9U patent/CN203441435U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314542A (en) * | 2014-09-24 | 2015-01-28 | 中国石油天然气股份有限公司 | Air injection-assisted steam oil recovery tube pillar and oil recovery method |
| CN109025934A (en) * | 2018-08-15 | 2018-12-18 | 中国石油天然气股份有限公司 | Reversible steam injection valve |
| CN109025933B (en) * | 2018-08-15 | 2020-12-01 | 中国石油天然气股份有限公司 | Preheating type steam distribution valve |
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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: 20140219 Termination date: 20210805 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |