CN203584345U - Releasing tool for high-pressure filling and sand prevention of small cased well - Google Patents
Releasing tool for high-pressure filling and sand prevention of small cased well Download PDFInfo
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- CN203584345U CN203584345U CN201320656250.1U CN201320656250U CN203584345U CN 203584345 U CN203584345 U CN 203584345U CN 201320656250 U CN201320656250 U CN 201320656250U CN 203584345 U CN203584345 U CN 203584345U
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- filling
- sand
- releasing tool
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Abstract
The utility model relates to a releasing tool for high-pressure filling and sand prevention of a small cased well. The releasing tool is used for implementing high-pressure filling and sand prevention in a small-diameter oil-water well. The tool comprises an upper joint, a releasing connecting pipe, a rubber cylinder seat, filling sleeves and a lower joint, wherein filling ports are formed in both the filling sleeves and the lower joint; rubber cylinders are fixed on the rubber cylinder seat; the releasing connecting pipe is connected with the rubber cylinder seat and the rubber cylinders sequentially; the upper joint is connected with the releasing connecting pipe through releasing shear pins; and the filling sleeves are connected with the lower joint through filling shear pins. After filling of gravel, the tool and a sand prevention tubular column are thrown into the well, so that the sand prevention effect is realized. The tool is simple to operate, reliable to work and high in safety performance, provides a technological means for high-pressure gravel filling and sand prevention of the small cased oil-water well, can improve the sand prevention effect and the crude oil recovery rate of the small cased well and has remarkable economic benefits.
Description
Technical field
The utility model belongs to the underground operation tool of petroleum industry, and particularly small casing pipe well high-pressure packing sand-control releasing tool, is used in minor diameter oil, well and implements high-pressure packing sand-control.
Background technology
Oil-water well sand control is the important means that prevents formation sand production, how to improve sand controlling result, extends the period of validity of sand control, is key, the important means that guarantees sand control quality.At present, the minor diameter sleeve pipe oil-water well sand control for external diameter 95.3mm, internal diameter 82mm, generally adopts chemical sand control.Chemical sand control is by chemical materials, the sand of near wellbore zone is cemented together, stops the migration of sand grains, forms effective sand block barrier.Shortcoming is that chemical sand control can reduce near wellbore permeability, affects oil well output, and period of validity is short.Because the interior latus rectum of small casing pipe well is little, also there is no at present high pressure gravel pack instrument, high pressure gravel filling sand prevention is mainly used on conventional oil-water well, and is mainly to utilize chemical sand control or utilize sand screen sand control at present for small casing oil-water well.Production scene needs small casing oil-water well to carry out the technical equipment of high pressure gravel filling sand prevention.
Summary of the invention
For the sand control present situation of above-mentioned small casing oil-water well, the utility model is to provide small casing pipe well high-pressure packing sand-control releasing tool, is used in conjunction with sand control pipe, solves a difficult problem for small casing oil, well high pressure gravel filling sand prevention.
The technical solution of the utility model is: small casing pipe well high-pressure packing sand-control releasing tool comprises top connection, the tube connector of giving up, glue tube base, filling sleeve and lower contact, in filling sleeve and lower contact, be equipped with filling mouth, fixing packing element on glue tube base, the tube connector of giving up is connected with filling sleeve successively with glue tube base, top connection is connected by the shear pin of giving up with the tube connector of giving up, and filling sleeve is connected by filling shear pin with lower contact.Gravel pack is complete, this instrument and sand control pipe can be lost in down-hole, plays sand control effect.
The beneficial effects of the utility model are: this instrument is provided with give up shear pin and filling shear pin, by load is differential, realize closing of filling mouth and giving up of instrument.Filling mouth is located at the top of filling shear pin, and the top portion that closes of filling mouth sends into tubing string loading, cuts off filling shear pin and can close filling mouth, and security performance is higher.After filling mouth is closed, load and cut off the shear pin of giving up, just can realize giving up of sand control pipe.The utility model is simple to operate, reliable operation, and security performance is high, for the high pressure gravel filling sand prevention of small casing oil-water well provides technological means, can improve sand controlling result and the oil recovery factor of small casing pipe well, has obvious economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail: referring to Fig. 1,
Small casing pipe well high-pressure packing sand-control releasing tool comprises top connection 1, the tube connector of giving up, glue tube base, filling sleeve and lower contact 6, in filling sleeve and lower contact 6, be equipped with filling mouth 4, fixing packing element 3 on glue tube base, the tube connector of giving up is connected with filling sleeve successively with glue tube base, top connection 1 is connected by the shear pin 2 of giving up with the tube connector of giving up, and filling sleeve is connected by filling shear pin 5 with lower contact 6.The interior latus rectum of top connection 1, the tube connector of giving up, glue tube base and lower contact 6 equates.The corresponding setting of filling mouth 4 in filling sleeve and lower contact 6, is at least provided with two.The diameter of shear pin 2 of giving up is set between 10mm-12mm, is at least provided with three.The diameter of filling shear pin 5 is set between 6mm-8mm, is at least provided with three.The top inner circle of filling sleeve is provided with lower contact and slides chamber, slides in chamber interval 60cm-80cm at least between glue tube base and lower contact 6 at this.Filling mouth 4 is located at the top of filling shear pin 5.On glue tube base, be at least provided with packing element 3 one, in Fig. 1, select two road packing elements 3.Top connection 1 is provided with internal thread and sends into tubing string and be connected, and lower contact 6 is provided with external screw thread and is connected with sand control pipe.
During on-the-spot use, by top connection 1 of the present utility model with send into tubing string and be connected, by lower contact 6 connection sand control pipes, according to designing requirement, be slowly lowered to design attitude.Lower fashionable filling mouth 4 of the present utility model is opened, and by Ground Vehicle group, load fluid is pumped in well, through 4 pairs of stratum of over packing mouth and oil jacket annular space, realizes filling.After filling, by sending into 5 tons of tubing string pressurizations, cut off filling shear pin 5, close filling mouth 4.Pressurize again 7 tons, cut off the shear pin 2 of giving up, realize giving up of sand control pipe.
Application notice:
1. the packing element 3 of this instrument is larger than the appearance and size of instrument, and the strict lowering velocity of controlling in lower instrument process avoids excessive velocities to cause packing element 3 to damage;
2. this tool sizes is less, and sand control construction control construction sand ratio, avoids sand plug, guarantees normally completing of sand control construction;
3. this instrument cuts off filling shear pin 5 by load and cuts out filling mouth 4 and cut off the shear pin 2 of giving up and realize and giving up, and rationally control load, guarantees closing of filling mouth 4 and completing smoothly of the construction of giving up.
Claims (9)
1. small casing pipe well high-pressure packing sand-control releasing tool, it is characterized in that, comprise top connection, the tube connector of giving up, glue tube base, filling sleeve and lower contact, in filling sleeve and lower contact, be equipped with filling mouth, fixing packing element on glue tube base, the tube connector of giving up is connected with filling sleeve successively with glue tube base, and top connection is connected by the shear pin of giving up with the tube connector of giving up, and filling sleeve is connected by filling shear pin with lower contact.
2. small casing pipe well high-pressure packing sand-control releasing tool according to claim 1, is characterized in that, the interior latus rectum of top connection, the tube connector of giving up, glue tube base and lower contact equates.
3. small casing pipe well high-pressure packing sand-control releasing tool according to claim 1, is characterized in that, the corresponding setting of filling mouth in filling sleeve and lower contact, is at least provided with two.
4. small casing pipe well high-pressure packing sand-control releasing tool according to claim 1, is characterized in that, the diameter of the shear pin of giving up is set between 10mm-12mm, is at least provided with three.
5. small casing pipe well high-pressure packing sand-control releasing tool according to claim 1, is characterized in that, the diameter of filling shear pin is set between 6mm-8mm, is at least provided with three.
6. according to the small casing pipe well high-pressure packing sand-control releasing tool described in claim 1 or 3, it is characterized in that, the top inner circle of filling sleeve is provided with lower contact and slides chamber, slides in chamber interval 60cm-80cm at least between glue tube base and lower contact at this.
7. according to the small casing pipe well high-pressure packing sand-control releasing tool described in claim 1 or 3, it is characterized in that, described filling mouth is located at the top of filling shear pin.
8. small casing pipe well high-pressure packing sand-control releasing tool according to claim 1 and 2, is characterized in that, is at least provided with one packing element on described glue tube base.
9. small casing pipe well high-pressure packing sand-control releasing tool according to claim 1 and 2, is characterized in that, described top connection is provided with internal thread and sends into tubing string and be connected, and lower contact is provided with external screw thread and is connected with sand control pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320656250.1U CN203584345U (en) | 2013-10-24 | 2013-10-24 | Releasing tool for high-pressure filling and sand prevention of small cased well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320656250.1U CN203584345U (en) | 2013-10-24 | 2013-10-24 | Releasing tool for high-pressure filling and sand prevention of small cased well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203584345U true CN203584345U (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320656250.1U Expired - Fee Related CN203584345U (en) | 2013-10-24 | 2013-10-24 | Releasing tool for high-pressure filling and sand prevention of small cased well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203584345U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632146A (en) * | 2013-11-13 | 2015-05-20 | 中国石油化工股份有限公司 | High-pressure packing sand prevention tool |
-
2013
- 2013-10-24 CN CN201320656250.1U patent/CN203584345U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632146A (en) * | 2013-11-13 | 2015-05-20 | 中国石油化工股份有限公司 | High-pressure packing sand prevention tool |
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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: 20140507 Termination date: 20151024 |
|
| EXPY | Termination of patent right or utility model |