CN203614088U - Gas-well two-layer fracturing tool - Google Patents
Gas-well two-layer fracturing tool Download PDFInfo
- Publication number
- CN203614088U CN203614088U CN201320847753.7U CN201320847753U CN203614088U CN 203614088 U CN203614088 U CN 203614088U CN 201320847753 U CN201320847753 U CN 201320847753U CN 203614088 U CN203614088 U CN 203614088U
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- well
- packer
- hydraulic anchor
- gas
- fracturing tool
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Abstract
The utility model discloses a gas-well two-layer fracturing tool and belongs to an oil-field gas-well fracturing matched tool. The gas-well two-layer fracturing tool comprises a pipe column which is arranged in a pipe sleeve and parallel to the pipe sleeve, and a safety connector, an inverse-circulation well washing valve, a first hydraulic anchor, a Y111 packer, an oil pipe stretching and contraction compensator, a second hydraulic anchor, a sliding sleeve sand spraying device, a Y221 packer and a horn mouth are arranged at the bottom end of the pipe column from top to bottom in sequence. The safety connector is of a structure with a ball-type pressurizing connector and a forward-direction rotating connector combined, the inverse-circulation well washing valve is of a ball-type eccentric structure, and the first hydraulic anchor is of a twelve-claw structure. A slip insert made of alloy is inlaid into the Y221 packer. Well clamping, well kick and blowout accidents possibly happening after two layers of the pipe column of the gas-well two-layer fracturing tool fracture are effectively avoided.
Description
Technical field
The double-deck fracturing tool of a kind of gas well belongs to oil field gas well fracturing kit.
Background technology
At present, in oil field oil, gas well fracturing process,, especially when lift pipe string, easily there is well kick gas blowout accident in easy sand card after pressure break, and more seriously, one time tubing string pressure break is two-layer, and card well accident more easily occurs.But neither one is good again method or equipment solve this problem.
Utility model content
In order to address the above problem, the utility model has designed the double-deck fracturing tool of a kind of gas well, can, after the tubing string pressure break of the double-deck fracturing tool of gas well, effectively avoid the generation of Ka Jing, well kick and gas blowout accident.
The purpose of this utility model is achieved in that
The double-deck fracturing tool of a kind of gas well, comprise and be arranged on inner parallel with the pipe box tubing string of pipe box, be equipped with successively from top to bottom safety joint, anti-cyclic cleaning valve, the first hydraulic anchor, Y111 packer, oil pipe extension expansion loop, the second hydraulic anchor, sand blower of sliding sleeve, Y221 packer and horn mouth in the bottom of tubing string; Described safety joint is that pitching is suppressed and given up and be rotated in the forward the two kinds of structures that the mode of giving up is combined of giving up; Described anti-cyclic cleaning valve is ball type eccentric structure; The first described hydraulic anchor and the second hydraulic anchor are 12 pawl structures; Described sand blower of sliding sleeve is three hole sandblasters; Described Y221 packer is inlaid with the slip insert that alloy material is made.
The double-deck fracturing tool of above-mentioned gas well, described the second hydraulic anchor and sand blower of sliding sleeve are structure as a whole.
The beneficial effect of the double-deck fracturing tool of the utility model gas well is: after the tubing string pressure break of the double-deck fracturing tool of gas well, and after a tubing string pressure break is two-layer, effectively avoid the generation of Ka Jing, well kick and gas blowout accident.
Accompanying drawing explanation
Fig. 1 is the double-deck fracturing tool structural representation of the utility model gas well.
In figure: 1 horn mouth, 2 Y221 packers, 3 sand blower of sliding sleeves, 4 second hydraulic anchors, 5 oil pipe extension expansion loops, 6 Y111 packers, 7 first hydraulic anchors, 8 anti-cyclic cleaning valves, 9 safety joints, 10 tubing strings, 11 pipe boxes.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model specific embodiment is described in further detail.
Specific embodiment one
The double-deck fracturing tool of gas well of the present embodiment, as shown in Figure 1, in figure, pipe box 11 bottom outside are fractured layer to structural representation.The double-deck fracturing tool of this gas well comprises and is arranged on inner parallel with pipe box 11 tubing strings 10 of pipe box 11, is equipped with successively from top to bottom safety joint 9, anti-cyclic cleaning valve 8, the first hydraulic anchor 7, Y111 packer 6, oil pipe extension expansion loop 5, the second hydraulic anchor 4, sand blower of sliding sleeve 3, Y221 packer 2 and horn mouth 1 in the bottom of tubing string 10; Described safety joint 9 is suppressed and is given up and be rotated in the forward the two kinds of structures that the mode of giving up is combined of giving up for pitching; Described anti-cyclic cleaning valve 8 is ball type eccentric structure; Described the first hydraulic anchor 7 and the second hydraulic anchor 4 are 12 pawl structures; Described sand blower of sliding sleeve 3 is three hole sandblasters; Described Y221 packer 2 is inlaid with the slip insert that alloy material is made.
Specific embodiment two
The double-deck fracturing tool of gas well of the present embodiment, is from the different of specific embodiment one, described the second hydraulic anchor 4 and sand blower of sliding sleeve 3 are structure as a whole.When this design can be avoided splitting sand and is located ram's horn deblocking, ram's horn cannot reclaim and form Ka Jing.
Operating principle and the course of work of the double-deck fracturing tool of the utility model gas well are specially:
Set: after putting in place under fracturing tool string, transfer after being rotated in the forward tubing string 10, Y221 packer 2, Y111 packer 6 set under tubing string 10 ballast effects seated fracture well head.
Pressure break: in pressure break first floor process, Y221 packer 2 is subject to the effect of uplifting pressure, this power is balanced by 12 pawl the second hydraulic anchors 4.Under the acting in conjunction of the slip insert on Y221 packer 2 and the second hydraulic anchor 4, in whole fracturing process, Y221 packer 2 is always in motionless state, guarantee the sealing performance of Y221 packer 2, Y111 packer 6, under the effect of the first hydraulic anchor 7, is not wriggled in the process of pressure break lower floor.
After lower floor's pressure break finishes, to the interior pitching of tubing string 10, open the sand blower of sliding sleeve 3 pressure break second layers, in pressure break second layer process, Y221 packer 2 is subject to downward hydraulic coupling and is born by the slip insert on Y221 packer 2, the suffered upper top power of Y111 packer 6 is balanced by the first hydraulic anchor 7, and Y221 packer 2 and Y111 packer 6 are not wriggled, and have guaranteed the sealing performance of Y221 packer 2 and Y111 packer 6.
Lift pipe string 10: after gas well fracturing finishes, the kill-job that can instead circulate, just can go up fracturing string 10 after kill-job.In the time that sand setting is arranged at Y221 packer 2 tops, can on carry the rear seated well head of a small distance tubing string 10, now deblocking of Y111 packer 6, can carry out anti-circulation well cleanup, flushing fluid is from the hole backspace of sand blower of sliding sleeve 3, realize anti-circulation well cleanup, after wash clean Y221 packer 2 top sand settings, trip out fracturing string 10.
Give up: because outer alter and packing element surprisingly lost efficacy and causes Y221 packer 2 and the Y111 packer 6 a large amount of sand settings in packing element top altered, overlapped to layer, anti-flushing well is also washed when obstructed, can adopt and be rotated in the forward the mode that tubing string 10 modes or pitching suppress and put safety joint 9 aside, and all parts of safety joint below 9, above repair processing.
Claims (2)
1. the double-deck fracturing tool of gas well, it is characterized in that: comprise and be arranged on inner parallel with pipe box (11) tubing string (10) of pipe box (11), be equipped with successively from top to bottom safety joint (9), anti-cyclic cleaning valve (8), the first hydraulic anchor (7), Y111 packer (6), oil pipe extension expansion loop (5), the second hydraulic anchor (4), sand blower of sliding sleeve (3), Y221 packer (2) and horn mouth (1) in the bottom of tubing string (10); Described safety joint (9) is suppressed and is given up and be rotated in the forward the two kinds of structures that the mode of giving up is combined of giving up for pitching; Described anti-cyclic cleaning valve (8) is ball type eccentric structure; Described the first hydraulic anchor (7) and the second hydraulic anchor (4) are 12 pawl structures; Described sand blower of sliding sleeve (3) is three hole sandblasters; Described Y221 packer (2) is inlaid with the slip insert that alloy material is made.
2. the double-deck fracturing tool of gas well according to claim 1, is characterized in that: described the second hydraulic anchor (4) and sand blower of sliding sleeve (3) are structure as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320847753.7U CN203614088U (en) | 2013-12-22 | 2013-12-22 | Gas-well two-layer fracturing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320847753.7U CN203614088U (en) | 2013-12-22 | 2013-12-22 | Gas-well two-layer fracturing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614088U true CN203614088U (en) | 2014-05-28 |
Family
ID=50766740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320847753.7U Expired - Fee Related CN203614088U (en) | 2013-12-22 | 2013-12-22 | Gas-well two-layer fracturing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614088U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178934A (en) * | 2015-09-24 | 2015-12-23 | 中国石油天然气股份有限公司 | Horizontal well throttling-free straddle type double-seal single-clamp fracturing process |
| CN109441419A (en) * | 2018-10-15 | 2019-03-08 | 中石化石油工程技术服务有限公司 | A kind of secondary transformation tubing string of oil and gas reservoir |
| CN109681162A (en) * | 2018-04-19 | 2019-04-26 | 中国石油化工股份有限公司 | Anchoring compensation layered water injection method and equipment |
-
2013
- 2013-12-22 CN CN201320847753.7U patent/CN203614088U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178934A (en) * | 2015-09-24 | 2015-12-23 | 中国石油天然气股份有限公司 | Horizontal well throttling-free straddle type double-seal single-clamp fracturing process |
| CN109681162A (en) * | 2018-04-19 | 2019-04-26 | 中国石油化工股份有限公司 | Anchoring compensation layered water injection method and equipment |
| CN109441419A (en) * | 2018-10-15 | 2019-03-08 | 中石化石油工程技术服务有限公司 | A kind of secondary transformation tubing string of oil and gas reservoir |
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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: 20140528 Termination date: 20151222 |
|
| EXPY | Termination of patent right or utility model |