CN2731091Y - Dropped three-layer pressing crack pipe column - Google Patents
Dropped three-layer pressing crack pipe column Download PDFInfo
- Publication number
- CN2731091Y CN2731091Y CN 200420092490 CN200420092490U CN2731091Y CN 2731091 Y CN2731091 Y CN 2731091Y CN 200420092490 CN200420092490 CN 200420092490 CN 200420092490 U CN200420092490 U CN 200420092490U CN 2731091 Y CN2731091 Y CN 2731091Y
- Authority
- CN
- China
- Prior art keywords
- packer
- dropped
- anchor
- move back
- tubing string
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to a dropped three-layer pressing crack pipe column for oil well crack of separate layers, comprising a waterpower anchor 1, an upper packer 2, a stage one released dropped sand blasting device 3, a middle packer 4, a stage two released dropped sand blasting device 5, and an anchor packer 6. The waterpower anchor 1 is arranged at the upper part of the device, the stage one released dropped sand blasting device 3 is arranged between the upper packer 2 and the middle packer 4, and the stage two released dropped sand blasting device 5 is arranged between the middle packer 4 and the anchor packer 6, so that the three-layer or more than three-layer pressing crack can be realized, and the accidents that pipe columns are clamped by sand can be avoided in the three-layer pressing crack of separate layers. Although the procedure of salvaging is added in the pipe column, the well clamping accidents can be avoided, so that a big amount of money for processing the well clamping accidents can be saved.
Description
Technical field:
The utility model relates to the oil well delamination fracturing string, specifically, is that three laminations that can disconnect split tubing string.
Background technology:
Three layers of separate stratum fracfturing tubing strings employing of present domestic employing are connected in series with two common sandblasters, restriction choke, hydraulic anchors by 3 waterpower compression packer or hydraulic expansion formula packer and form.Fracturing process is to depress layer earlier, has pressed to throw steel ball after the lower floor and open the middle level sliding sleeve, seals lower floor's passage simultaneously, pressure break middle level again, has pressed the middle level after the throwing steel ball open the upper strata sliding sleeve, in sealing simultaneously, lower floor's passage, the pressure break upper strata, tubing string once proposes after the pressure break.
The major defect of this tubing string is: if the middle level has to shake out and sinks on the lower packer after the pressure break, during from the sleeve pipe well-flushing, well-flushing liquid forms passage at top sliding sleeve place, upwards reflux, therefore the sand setting on lower packer can't be gone out, lower packer very easily is stuck in the well by sand, and a whole set of tubing string will be difficult to propose.Though this separate stratum fracfturing tubing string has introduction on the book of teaching of petroleum production engineering handbook and some other oil recovery technique, but tubing string card well accident rate is very high, order three first layers dividing potential drop card well accident rate is greater than 25%, and seldom use in therefore existing domestic each oil field, and this technology has become empty talk.
Summary of the invention:
The purpose of this utility model is to provide a kind of three laminations that disconnect that can effectively solve three layers of dividing potential drop sand card tubing string problem to split tubing string.
The utility model is achieved in that and comprises that 2,1 grade of hydraulic anchor 1, upper packer can move back disjoint sandblaster 3, middle packer can move back disjoint sandblaster 5, anchor packer 6 for 4,2 grades, the top of this device is provided with hydraulic anchor 1, between upper packer 2 and middle packer 4, be provided with 1 grade and can move back disjoint sandblaster 3, between middle packer 4 and anchor packer 6, be provided with 2 grades and can move back disjoint sandblaster 5.
The utility model also adopts following technical scheme:
1 grade can to move back disjoint sandblaster 3 different with 2 grades of two interior latus rectums that can move back disjoint sandblaster 5.
Advantage of the present utility model is: realize separate stratum fracfturing more than three layers and three layers, can avoid the generation of three layers of separate stratum fracfturing medium sand card tubing string accident, though this tubing string has increased the operation of salvaging, owing to can avoid card well accident, can save the overhaul cost of huge transaction card well.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment:
As shown in the figure, the three layers of separate stratum fracfturing tubing string that can disconnect adopt by moved back disjoint sandblaster 3,5, the hydraulic anchor 1 of 2 waterpower compression packer or the different interior latus rectums with 1 slip-type packer 6 and two of hydraulic expansion formula packer 2,4 to be formed, the top-down order of connection of each facility is that 2,1 grade of hydraulic anchor 1, upper packer can move back disjoint sandblaster 3, the middle level packer can move back disjoint sandblaster 5, bottom anchor packer 6 for 4,2 grades.
Depress layer during pressure break earlier, pressed and thrown steel ball after the lower floor and open the middle level sliding sleeve; Seal lower floor's passage simultaneously; And make tubing string can move back disjoint sandblaster 5 to throw off from 2 grades, pressure break middle level then, has pressed lower floor after the throwing steel ball open the upper strata sliding sleeve; In sealing simultaneously, lower floor's passage; And make tubing string can move back disjoint sandblaster 3 to throw off once more from 1 grade.
With existing 3 laminations split tubing string different be, tubing string can move back disjoint sandblaster 3,5 positions from two and disconnects after the pressure break, whole tubing string can be moved back disjoint sandblaster by two and take off into three sections; And three sections all are supported in the pit shaft by the anchor packer 6 of bottom.
Tubing string divides 3 propositions, and upper packer 2 can directly propose, and middle part and lower packer 4,6 adopt fishing tool to wash salvaging respectively, and the major advantage of this tubing string is: even there is sand setting in the middle level after the fruit pressure break, also can will pull out after the top of fish flushing.
Claims (2)
1, three laminations that can disconnect split tubing string, comprise that hydraulic anchor (1), upper packer (2), 1 grade can move back disjoint sandblaster (3), middle packer (4), 2 grades and can move back disjoint sandblaster (5), anchor packer (6), it is characterized in that: the top of this device is provided with hydraulic anchor (1), between upper packer (2) and middle packer (4), be provided with 1 grade and can move back disjoint sandblaster (3), between middle packer (4) and anchor packer (6), be provided with 2 grades and can move back disjoint sandblaster (5).
2, three laminations that disconnect according to claim 1 split tubing string, it is characterized in that: 1 grade can to move back disjoint sandblaster (3) different with 2 grades of two interior latus rectums that can move back disjoint sandblaster (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420092490 CN2731091Y (en) | 2004-09-20 | 2004-09-20 | Dropped three-layer pressing crack pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420092490 CN2731091Y (en) | 2004-09-20 | 2004-09-20 | Dropped three-layer pressing crack pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2731091Y true CN2731091Y (en) | 2005-10-05 |
Family
ID=35051428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420092490 Expired - Lifetime CN2731091Y (en) | 2004-09-20 | 2004-09-20 | Dropped three-layer pressing crack pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2731091Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173607B (en) * | 2007-05-30 | 2010-08-18 | 安东石油技术（集团）有限公司 | Disjointing controllable multi-layer fracturing tubular pile device of sandblaster and method for controlling disjointing |
| CN101328799B (en) * | 2008-07-11 | 2013-03-13 | 武汉亿斯达工具有限公司 | Sand prevention clamp sand spraying device and its use method |
| CN101842550B (en) * | 2007-08-01 | 2013-10-16 | 哈利伯顿能源服务公司 | Method for forming at least one roughly plane inclusion |
-
2004
- 2004-09-20 CN CN 200420092490 patent/CN2731091Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173607B (en) * | 2007-05-30 | 2010-08-18 | 安东石油技术（集团）有限公司 | Disjointing controllable multi-layer fracturing tubular pile device of sandblaster and method for controlling disjointing |
| CN101842550B (en) * | 2007-08-01 | 2013-10-16 | 哈利伯顿能源服务公司 | Method for forming at least one roughly plane inclusion |
| CN101328799B (en) * | 2008-07-11 | 2013-03-13 | 武汉亿斯达工具有限公司 | Sand prevention clamp sand spraying device and its use method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201802376U (en) | Barefoot well completion hydraulic power sand blast immovable pipe column staged fracturing string | |
| CN201474673U (en) | Oil-producing pipe column for sectional water control of horizontal well | |
| CN109653721B (en) | Fracturing and energy-increasing oil displacement integrated process method for shallow low-pressure low-permeability oil reservoir | |
| CN100516458C (en) | Zonation method of thin interbed in low infiltration of fracturing layer segment | |
| CN110005374A (en) | A kind of coal bed gas well one-trip string multilayer partial pressure reforming technology | |
| CN101503955A (en) | Segmented well completion method and column jacket | |
| CN103912257B (en) | A kind of dragging multiple fracturing device with pressure | |
| CN102678098B (en) | Lamellar water logging exhausted oil well blocking and dredging combined tapping potential production increase method | |
| CN107989586A (en) | Coal bed gas well remodeling method based on the compound surge formula pressurized water injection of controllable shock wave | |
| CN104712292A (en) | Ultrasonic blockage removal technology and blockage removal device | |
| CN202338316U (en) | Five-layer layered compression fracture technology pipe column capable of mechanical isolating and progressive unpacking | |
| CN2731091Y (en) | Dropped three-layer pressing crack pipe column | |
| CN204851207U (en) | Multiple fracturing technology tubular column and fracturing instrument cluster thereof | |
| CN203230403U (en) | Mechanical isolation fracturing pipe column capable of conducting layering and eight-layer fracturing through one step and being released | |
| CN101397896B (en) | Water-shutoff method for sealing gas well effluent section by combination of incline cement and gas injection compression | |
| CN101067373A (en) | One line tube column partial pressure three-layer tube column and using method thereof | |
| CN200985782Y (en) | Operating tool string for gas well fracturing and production put | |
| CN104989325A (en) | Method for producing gas by using production pipe column of parallel double-pipe gas well | |
| CN203230415U (en) | Subsection simultaneous sampling and water exploration pipe column of multi-section fracturing horizontal well | |
| CN102022098A (en) | Process for realizing oil production by flexible continuous sucker rod | |
| CN201250653Y (en) | Sand-plugging preventing sand spraying device | |
| CN201106442Y (en) | Controllable disjointing multilayer separate-layer fracturing tubular pile | |
| CN2846741Y (en) | Sand proof tubular pole for water injection well | |
| CN2777192Y (en) | Water shut off tube column | |
| CN203822281U (en) | Under-pressure dragging type separate-layer fracturing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140920 Granted publication date: 20051005 |