CN204457618U - A kind of sand prevention water injection ball seat - Google Patents
A kind of sand prevention water injection ball seat Download PDFInfo
- Publication number
- CN204457618U CN204457618U CN201420807311.4U CN201420807311U CN204457618U CN 204457618 U CN204457618 U CN 204457618U CN 201420807311 U CN201420807311 U CN 201420807311U CN 204457618 U CN204457618 U CN 204457618U
- Authority
- CN
- China
- Prior art keywords
- water injection
- ball seat
- sand
- prevention water
- lower contact
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 47
- 239000007924 injection Substances 0.000 title claims abstract description 47
- 239000004576 sand Substances 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 230000002265 prevention Effects 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 7
- 238000000605 extraction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of sand prevention water injection ball seat, comprise top connection and lower contact, between upper and lower joint, be provided with fixed ball seat, the valve port which is provided with steel ball and set, lower contact connects plug by sand control screen.This device effectively can prevent from stopping noting rear stratum and return the sand told and enter in tubing string and cause tubing string to block; And have that structure is simple, good airproof performance, reliability are high, easy to operate.
Description
Technical field
The utility model relates to oil field sand prevention water filling field, particularly relates to a kind of sand prevention water injection ball seat being applicable to the various water injection well that shakes out.
Background technology
The most of oil field of China adopts waterflooding extraction, water injection well in oil fields realizes dispensing and generally adopts the expanding packer very little to casing damage, this packer needs to provide certain pressure just can set when setting, according to prior art means, generally realize building the pressure by constant pressure switch and water injection ball base, continue pressurization after packer setting and open waterflood path.Drop on water injection ball base form confined space by dropping into bead in oil pipe when setting, but in water injection well normal productive process, the note situation of stopping that unavoidable appearance causes due to a variety of causes occurs, water injection well is once stop note, stratum is told sand and is just entered tubing string calker by ball seat, causes water injection string to lose efficacy.At present, promotion oil recovery factory has water injection well 91 mouthfuls, and 34 mouthfuls, the well wherein shaked out in the injecting process, is shaked out and affect, and existing instrument frequently occurs blocking and causes noting the situation appearance of not intaking, and the serious well that partly shakes out even can only adopt commingled water injection or stop note.Effective sand control measure is not taked for this problem of shaking out in the injecting process in existing separate injection tubing string technology, therefore a large amount of inspection tubing string operations is caused every year, have a strong impact on water injection well utilization rate, even destroy the injection and extraction system of block, cause injection and extraction system uneven.
Therefore, be necessary to provide a kind of novel water injection well sand control technique, realize shaking out effective sand control of water injection well.
Utility model content
The purpose of this utility model is for separate layer water injection string provides a kind of reliable, stable sand control technique support, effectively prevents from stopping noting rear stratum and returns the sand told and enter in tubing string and cause tubing string to block, for this reason, design a kind of sand prevention water injection ball seat of water injection string.
A kind of sand prevention water injection ball seat, comprise top connection and lower contact, between upper and lower joint, be provided with fixed ball seat, the valve port which is provided with steel ball and set, lower contact connects plug by sand control screen.
Further, described fixed ball seat is that arc-shaped coordinates with steel ball, forms confined space after coordinating in top connection.
Further, the described valve port set and lower contact endoporus through, formed flowing hole be used for anti-flushing well.
Further, described sand control screen is at least set to one section, prevents reservoir sand from entering tubing string.
Further, described lower contact external screw thread is connected with sand control screen one end internal thread; Sand control screen other end external screw thread is connected with plug wire internal thread.
Technique effect of the present utility model:
1, this apparatus structure is simple, and good airproof performance is easy to operate, safe and reliable, is easy to oil field and extensively promotes the use of;
2, this device is solve separate water injection well stopping to tell because stratum is anti-when noting the problem that sand plug plug water injection tool causes tubing string to lose efficacy to provide reliable technical guarantee.
3, this device simply and effectively can complete water injection well and prevents reservoir sand from entering tubing string, improves tubing string stability.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.
Fig. 1 is the structural representation of sand prevention water injection ball seat of the present utility model.
Wherein: the valve port that 1 top connection, 2 lower contacts, 3 ball seats, 4 sand control screens, 5 plugs, 31 steel balls, 32 set.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.
As shown in Figure 1, the utility model provides a kind of sand prevention water injection ball seat, and described sand prevention water injection ball seat includes top connection 1 and lower contact 2, is provided with a fixed ball seat 3 between upper and lower joint, the valve port 32 that this ball seat 3 is provided with steel ball 31 and sets; Described plug 5 is connected to lower contact 2 by described sand control screen 4.Described fixed ball seat 3 coordinates with steel ball 31 in arc-shaped, forms confined space after coordinating in top connection.
The described valve port 32 set is through with lower contact 2 endoporus, forms flowing hole and is used for anti-flushing well.Described sand control screen 4 is at least set to one section, prevents reservoir sand from entering tubing string.
In use, its upper end is connected in constant pressure switch by oil pipe the sand prevention water injection ball seat of the utility model water injection string, and constant pressure switch upper end connects water injection packer, then upper end connected pipes is to form described water injection string.Described water injection string is transferred in well, after putting in place under sand prevention water injection ball seat, drop into steel ball 31, when steel ball reach ball seat 3 and by valve port 32 shutoff after, with pump truck, water injection string is suppressed; When pressure reaches packer setting pressure, voltage stabilizing 5 ~ 8 minutes, makes packer setting; Continue to suppress and open pressure to constant pressure switch, waterflood path is opened, realize normal water filling.
Equipment embodiment: top connection 1 connects the constant pressure switch of layered water injection tool, lower contact 2 connects sand control screen 4, and sand control screen 4 lower end connects plug 5, and the valve port 32 set is positioned at ball seat 3, and steel ball 31 is positioned on ball seat.This instrument is in Liaohe Oil Field promotion oil recovery factory successful implementation and application.
Feature of the present utility model and advantage are: this sand prevention water injection ball seat can be connected at the bottom of conventional batch water injection string lowermost lower going-into-well, possesses overcurrent and the sealing function of common ball seat; Be arranged on the sand control screen below ball hurdle, effectively can prevent the water injection well caused due to a variety of causes in the daily production of water injection well and maintenance process from shaking out and enter tubing string, reduce the inspection tubing string operations number because the calker that shakes out causes, can to shake out type according to different injection well, adjustment screen casing type is to reach sand control object simultaneously.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (5)
1. a sand prevention water injection ball seat, comprise top connection (1) and lower contact (2), it is characterized in that, fixed ball seat (3) is provided with between upper and lower joint, the valve port (32) which is provided with steel ball (31) and set, lower contact (2) connects plug (5) by sand control screen (4).
2. sand prevention water injection ball seat according to claim 1, is characterized in that, described fixed ball seat (3) coordinates with steel ball (31) in arc-shaped, forms confined space after coordinating in top connection.
3. sand prevention water injection ball seat according to claim 1 and 2, is characterized in that, the described valve port (32) set is through with lower contact (2) endoporus, forms flowing hole and is used for anti-flushing well.
4. sand prevention water injection ball seat according to claim 1 and 2, is characterized in that, described sand control screen (4) is at least set to one section, prevents reservoir sand from entering tubing string.
5. sand prevention water injection ball seat according to claim 1 and 2, is characterized in that, described lower contact (2) external screw thread is connected with sand control screen (4) one end internal thread; Sand control screen (4) other end external screw thread is connected with plug wire (5) internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420807311.4U CN204457618U (en) | 2014-12-18 | 2014-12-18 | A kind of sand prevention water injection ball seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420807311.4U CN204457618U (en) | 2014-12-18 | 2014-12-18 | A kind of sand prevention water injection ball seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204457618U true CN204457618U (en) | 2015-07-08 |
Family
ID=53664520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420807311.4U Expired - Fee Related CN204457618U (en) | 2014-12-18 | 2014-12-18 | A kind of sand prevention water injection ball seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204457618U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561107A (en) * | 2018-06-28 | 2018-09-21 | 唐山冀东石油机械有限责任公司 | Multistage water injection process pipe string and its remove method |
| CN108868673A (en) * | 2018-06-28 | 2018-11-23 | 唐山冀东石油机械有限责任公司 | Multiple-string packer Back-off Pipe String and its remove method |
| CN108999576A (en) * | 2017-06-06 | 2018-12-14 | 中国石油天然气股份有限公司 | Dispense sand prevention integrated tubing string and technique |
-
2014
- 2014-12-18 CN CN201420807311.4U patent/CN204457618U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999576A (en) * | 2017-06-06 | 2018-12-14 | 中国石油天然气股份有限公司 | Dispense sand prevention integrated tubing string and technique |
| CN108999576B (en) * | 2017-06-06 | 2020-06-09 | 中国石油天然气股份有限公司 | Separate injection sand prevention integrated pipe column and process |
| CN108561107A (en) * | 2018-06-28 | 2018-09-21 | 唐山冀东石油机械有限责任公司 | Multistage water injection process pipe string and its remove method |
| CN108868673A (en) * | 2018-06-28 | 2018-11-23 | 唐山冀东石油机械有限责任公司 | Multiple-string packer Back-off Pipe String and its remove method |
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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: 20150708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |