CN104196512B - Oil well horizontal well oil jacket is the same as the double envelope single deck tape-recorder volume fracturing tubing strings of note formula and fracturing process - Google Patents
Oil well horizontal well oil jacket is the same as the double envelope single deck tape-recorder volume fracturing tubing strings of note formula and fracturing process Download PDFInfo
- Publication number
- CN104196512B CN104196512B CN201410423439.5A CN201410423439A CN104196512B CN 104196512 B CN104196512 B CN 104196512B CN 201410423439 A CN201410423439 A CN 201410423439A CN 104196512 B CN104196512 B CN 104196512B
- Authority
- CN
- China
- Prior art keywords
- packer
- oil
- fracturing
- oil pipe
- construction
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000003129 oil well Substances 0.000 title claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 36
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 3
- 239000012634 fragment Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000000638 stimulation Effects 0.000 abstract description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention belongs to oil gas field stimulation technology field, more particularly to a kind of oil well horizontal well oil jacket with the double envelope single deck tape-recorder volume fracturing tubing strings of note formula and fracturing process, including oil pipe, the end of oil pipe is connected with packer, ball-and-seat, eye pipe and righting-oriented device in turn, and pilot injector is connected between packer and oil pipe；The second packer, the 3rd packer and annular space injection valve are serially connected with oil pipe, second packer is located above pilot injector, 3rd packer is located above the second packer, annular space injection valve is located above the 3rd packer and adjacent 3rd packer is serially connected on oil pipe, the double envelope single deck tape-recorder staged fracturing techniques of existing in general are overcome to be only applicable to oil pipe injection pressing crack construction, fluid frictional resistance is big, the problem of operational discharge capacity is difficult to improve, oil pipe and sleeve pipe inject liquid stream simultaneously, realize that oil well horizontal well is successively layered volume fracturing construction from bottom to top.
Description
Technical field
The invention belongs to oil gas field stimulation technology field, is the fracturing technology commonly used in oil gas field reservoir reconstruction operation
One of tubing string, and in particular to a kind of oil well horizontal well oil jacket is the same as the double envelope single deck tape-recorder volume fracturing tubing strings of note formula and fracturing process.
Background technology
Along with the further exploitation in oil field, horizontal well volume fracturing process will as a kind of efficient reforming mode
As the major alterations mode of extra-low-permeability reservoir, double envelope single deck tape-recorder staged fracturing techniques are one kind of staged fracturing of horizontal well transformation
Effective technological measure, the technology are widely used in the old well of each block oil well horizontal well and repeated in transformation operation.
Along with the further exploitation in oil field, " volume fracturing " will be used as ultra-low penetration as a kind of efficient reforming mode
The major alterations mode of oil reservoir.Current double envelope single deck tape-recorder staged fracturing technology tube pillars are by safety joint, inflatable packer, pilot
Sanding machine, the instruments such as plug composition is oriented to, it is only applicable to oil pipe injection pressing crack construction, and fluid frictional resistance is big, and operational discharge capacity is difficult to
Improve, the construction demand of " volume fracturing " can not be met.
The content of the invention
The purpose of the present invention is to overcome the double envelope single deck tape-recorder staged fracturing techniques of existing in general to be only applicable to oil pipe injection pressure break
The problem of construction, fluid frictional resistance is big, and operational discharge capacity is difficult to improve.
Therefore, the invention provides a kind of oil well horizontal well oil jacket with the double envelope single deck tape-recorder volume fracturing tubing strings of note formula, including oil
Pipe, the end of oil pipe is connected with packer, ball-and-seat, eye pipe and righting-oriented device in turn, is connected between packer and oil pipe
Pilot injector；
The second packer, the 3rd packer and annular space injection valve are serially connected with oil pipe, second packer is located at pilot
Above injector, the 3rd packer be located above the second packer, and annular space injection valve is located at the 3rd packer top and adjacent the
Three packers are serially connected on oil pipe.
The distance between described 3rd packer and packer are more than the length for needing fractured interval.
The packer and the second packer are inflatable packer, and the 3rd packer is mechanical packer.
A kind of fracturing process of such as above-mentioned volume fracturing tubing string, comprises the following steps,
1）Connect tubing string and lower brill：The length of the interval of pressure break is needed to connect tubing string according to Oil/gas Well so that the 3rd envelope
Being more than every the distance between device and packer needs the length of fractured interval, then lower to bore so that packer, which is located at, to be needed
The construction layer bottom of pressure break, then it is target zone between packer and the second packer；
2）Set：Set the 3rd packer；
3）Pressing crack construction：Fracturing fluid is all injected in rail and annular space simultaneously, fracturing fluid, which passes through in pilot injector, to flow out,
Throttling official post is produced simultaneously and obtains packer and the second packer setting, and now fracturing fluid is led to by the connection of construct interval and sleeve pipe
Road, pressing crack construction is carried out into the bottom between packer and the second packer；
4）Drag tubing string：After the completion of pressing crack construction, dragging tubing string goes upward to the preceding paragraph target zone；
5）Repeat step 2）、3）、4）Until complete all pressing crack constructions.
Above-mentioned steps 3）The interface channel of middle construction interval and sleeve pipe, in step 1）Passage is kept to have turned on before, when
, it is necessary to perforating gun is sent into design attitude by the way of conventional tubing transmission, disposably to the well institute when well of constructing is new well
There is interval to carry out perforating job.
Beneficial effects of the present invention：This oil well horizontal well oil jacket of the present invention is the same as the double envelope single deck tape-recorder volume fracturing tubing strings of note formula
And fracturing process, have turned on interval, the liquid stream of annular space injection on target zone with the 3rd packer and the second packer packing
Enter in underground close to construction fragment position in oil pipe, mixed liquid stream is in the shorter oily Bottomhole pressure in underground, through pilot sandblasting
Device enters construction interval, realizes the volume fracturing construction to target zone, this to repeat volume fracturing rebuilding construction, it is possible to achieve
The oil well horizontal well of construction is successively layered volume fracturing construction from bottom to top.
The present invention is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is tubing string of the present invention in net horizontal section operation structure schematic diagram.
Description of reference numerals：1st, annular space injection valve；2nd, the 3rd packer；3rd, the second packer；4th, pilot injector；5th, seal
Every device；6th, ball-and-seat；7th, eye pipe；8th, righting-oriented device；9th, oil pipe.
Embodiment
Embodiment 1：
In order to make double envelope single deck tape-recorder staged fracturing techniques be applicable not only to oil pipe injection pressing crack construction, and adapt to oil pipe
Annular space injects pressure break simultaneously, seals single deck tape-recorder volume fracturing tubing strings with note formula pair the invention provides a kind of oil well horizontal well oil jacket, such as
Shown in Fig. 1, including oil pipe 9, the end of oil pipe 9 are connected with packer 5, ball-and-seat 6, eye pipe 7 and righting-oriented device 8 in turn, envelope
Pilot injector 4 is connected between device 5 and oil pipe 9；The packer 3 of packer 5 and second is inflatable packer, the 3rd
Packer 2 is mechanical packer.
The second packer 3, the 3rd packer 2 and annular space injection valve 1 are serially connected with oil pipe 9, second packer 3 is located at
The top of pilot injector 4, the 3rd packer 2 are located at the top of the second packer 3, and annular space injection valve 1 is located at the top of the 3rd packer 2
And adjacent 3rd packer 2 is serially connected on oil pipe 9, the direction of so-called here " top " with tubing string in vertical state（I.e.
Connect direction during tubing string）, figure middle position is set to operating position.The distance between 3rd packer 2 and packer 5, which are more than, to be needed to press
The length of parting section.
This tubing string string of the present embodiment, the second packer 3 and corresponding bottom is pressure break target zone between device 5,
Fracturing fluid can spray from annular space injection valve 1, and then entering bottom by the interface channel of sleeve pipe carries out fracturing work；After the completion of it is whole
Body pipe string is moved up, and continues the pressure break of next position, continuous repeated work process, staged fracturing is different from bottom to top
Stratum.
Embodiment 2：
On the basis of above-described embodiment, the present invention proposes a kind of fracturing process, comprises the following steps,
First look at the wellbore conditions before construction, this fracturing process proposed by the present invention, applied to the oil well constructed
Horizontal well, i.e., the interface channel of all construction intervals and sleeve pipe have turned on；If well of constructing is new well, it is necessary to carry out perforation work
Industry, perforating gun can be sent into design attitude by the way of conventional tubing transmission, perforation disposably is carried out to all intervals of the well
Operation.
Next operation is carried out according to the following steps：
1）Connect tubing string and lower brill：The connection of tubing string is carried out according to the structure in above-described embodiment, according to Oil/gas Well needs
The length of the interval of pressure break determines the position of each packer so that the distance between the 3rd packer 2 and packer 5, which are more than, to be needed
The length of fractured interval is wanted, it is then lower to bore so that packer 5 is located at the construction layer bottom for needing pressure break, then packer 5
It is target zone between the second packer 3；
2）Set：3rd packer 2 is generally mechanical packer, causes the 3rd envelope using mechanical systems such as rotary tools
Set every device 2；
3）Pressing crack construction：Fracturing fluid is all injected in rail 9 and annular space simultaneously, the fracturing fluid of oil jacket annular space injection is in underground
Being entered close to construction fragment position by annular space injection valve 1 in oil pipe 9, mixed fracturing fluid flows in the shorter oil pipe 9 in underground,
Fracturing fluid, which passes through in pilot injector 4, to flow out, while produces throttling official post and obtain the packer 3 of packer 5 and second and set, and now presses
Interface channel of the liquid by construct interval and sleeve pipe is split, into the packer of packer 5 and second（3）Between bottom carry out pressure break
Construction；
4）Drag tubing string：After the completion of previous step pressing crack construction, dragging tubing string is up, leaves the interval of pressure break, on
Go to the interval of the non-pressure break in top；
5）Repeat step 2）、3）、4）So that tubing string constantly rises, pressure break, and from bottom to top, each construction is completed in segmentation
The pressure break of section.
Fracturing process more than, fracturing fluid is injected while realizing oil pipe and sleeve pipe, operational discharge capacity is high, can realize
Top-down successively volume fracturing construction.
Each component in the tubing string being related in embodiment is existing structure, can be obtained in the market by buying,
Do not illustrate herein.
It is exemplified as above be only to the present invention for example, do not form the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (1)
- A kind of 1. fracturing process of volume fracturing tubing string, it is characterised in that：Comprise the following steps,1）Connect tubing string and lower brill：The length of the interval of pressure break is needed to connect tubing string according to Oil/gas Well so that the 3rd packer （2）With packer（5）The distance between be more than and need the length of fractured interval, it is then lower to bore so that packer（5）Positioned at needs The construction layer bottom of pressure break, then packer（5）With the second packer（3）Between be target zone；2）Set：Set the 3rd packer（2）；3）Pressing crack construction：Rail（9）With in annular space all simultaneously inject fracturing fluid, fracturing fluid passes through pilot injector（4）Middle stream Go out, while produce throttling official post and obtain packer（5）With the second packer（3）Set, now fracturing fluid passes through interval and the set of constructing The interface channel of pipe, into packer（5）With the second packer（3）Between bottom carry out pressing crack construction；4）Drag tubing string：After the completion of pressing crack construction, dragging tubing string goes upward to the preceding paragraph target zone；5）Repeat step 2）、3）、4）Until complete all pressing crack constructions；A kind of oil well horizontal well oil jacket is the same as the double envelope single deck tape-recorder volume fracturing tubing strings of note formula, including oil pipe used by this method（9）, oil Pipe（9）End be connected with packer in turn（5）, ball-and-seat（6）, eye pipe（7）With righting-oriented device（8）, it is characterised in that：Envelope Every device（5）With oil pipe（9）Between be connected with pilot injector（4）；Oil pipe（9）On be serially connected with the second packer（3）, the 3rd packing Device（2）With annular space injection valve（1）, second packer（3）Positioned at pilot injector（4）Top, the 3rd packer（2）It is located at Second packer（3）Top, annular space injection valve（1）Positioned at the 3rd packer（2）Top and adjacent 3rd packer（2）It is serially connected in Oil pipe（9）On；3rd packer（2）With packer（5）The distance between be more than and need the length of fractured interval；The envelope Every device（5）With the second packer（3）For inflatable packer, the 3rd packer（2）For mechanical packer；This oil well horizontal well oil jacket is with the double envelope single deck tape-recorder volume fracturing tubing strings of note formula and fracturing process, with the 3rd packer and second Packer packing has turned on interval on target zone, and the liquid stream of annular space injection enters oil pipe in underground close to construction fragment position Interior, mixed liquid stream enters construction interval in the shorter oily Bottomhole pressure in underground, through pressure-guiding sand blower, realizes to target zone Volume fracturing is constructed, this to repeat volume fracturing rebuilding construction, it is possible to achieve the oil well horizontal well constructed is from bottom to top successively It is layered volume fracturing construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410423439.5A CN104196512B (en) | 2014-08-26 | 2014-08-26 | Oil well horizontal well oil jacket is the same as the double envelope single deck tape-recorder volume fracturing tubing strings of note formula and fracturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410423439.5A CN104196512B (en) | 2014-08-26 | 2014-08-26 | Oil well horizontal well oil jacket is the same as the double envelope single deck tape-recorder volume fracturing tubing strings of note formula and fracturing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104196512A CN104196512A (en) | 2014-12-10 |
| CN104196512B true CN104196512B (en) | 2017-12-26 |
Family
ID=52081861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410423439.5A Active CN104196512B (en) | 2014-08-26 | 2014-08-26 | Oil well horizontal well oil jacket is the same as the double envelope single deck tape-recorder volume fracturing tubing strings of note formula and fracturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104196512B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671058A (en) * | 2019-09-10 | 2020-01-10 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Double-sealing single-clamping process pipe column of old horizontal well and method for realizing large-discharge transformation |
| CN112267864A (en) * | 2020-09-21 | 2021-01-26 | 中国石油天然气股份有限公司 | Repeated fracturing device and method for large-displacement horizontal well |
| CN115324550B (en) * | 2022-08-09 | 2024-06-18 | 中国石油天然气集团有限公司 | Hydraulic coiled tubing dragging fracturing tool and technological method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202300357U (en) * | 2011-09-30 | 2012-07-04 | 中国石油化工股份有限公司 | Well cementing staged fracturing well completion pipe column with controllable valves and hydraulic control switch pipe column |
| CN203321476U (en) * | 2013-06-05 | 2013-12-04 | 中国石油天然气股份有限公司 | Coiled tubing controllable packer process pipe column for old well repeated reconstruction |
| CN103470242A (en) * | 2013-09-14 | 2013-12-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Oilfield horizontal well volume fracturing method |
| CN203394491U (en) * | 2013-06-05 | 2014-01-15 | 中国石油天然气股份有限公司 | Perforation and fracturing integrated tubular column for selectively and repeatedly reforming old well of oil field |
| CN204082116U (en) * | 2014-08-26 | 2015-01-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Oil well horizontal well oil jacket is with note formula two envelope single deck tape-recorder volume fracturing tubing string |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7096954B2 (en) * | 2001-12-31 | 2006-08-29 | Schlumberger Technology Corporation | Method and apparatus for placement of multiple fractures in open hole wells |
-
2014
- 2014-08-26 CN CN201410423439.5A patent/CN104196512B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202300357U (en) * | 2011-09-30 | 2012-07-04 | 中国石油化工股份有限公司 | Well cementing staged fracturing well completion pipe column with controllable valves and hydraulic control switch pipe column |
| CN203321476U (en) * | 2013-06-05 | 2013-12-04 | 中国石油天然气股份有限公司 | Coiled tubing controllable packer process pipe column for old well repeated reconstruction |
| CN203394491U (en) * | 2013-06-05 | 2014-01-15 | 中国石油天然气股份有限公司 | Perforation and fracturing integrated tubular column for selectively and repeatedly reforming old well of oil field |
| CN103470242A (en) * | 2013-09-14 | 2013-12-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Oilfield horizontal well volume fracturing method |
| CN204082116U (en) * | 2014-08-26 | 2015-01-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Oil well horizontal well oil jacket is with note formula two envelope single deck tape-recorder volume fracturing tubing string |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104196512A (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101864921B (en) | Well completion and oil production string of horizontal well and well completion and oil production processes thereof | |
| CN104314546B (en) | Staged fracturing well completion pipe string in horizontal well casing and staged fracturing process | |
| CN106194131B (en) | It is spaced CO between multistage fracturing horizontal well seam2Oil flooding method | |
| CN102022104B (en) | Open-hole packer for open-hole horizontal well and preset connector fracturing well completion method | |
| CA2907623C (en) | Increasing hydrocarbon recovery from reservoirs | |
| CN104153753B (en) | Horizontal well volume fracturing tubular column and method based on conventional oil tube pressure dragging | |
| CN104981584A (en) | Fluid injection in light tight oil reservoirs | |
| CN103470242B (en) | A kind of oilfield horizontal well volume fracturing method | |
| CN109267983B (en) | Horizontal well repeated fracturing device and method based on open hole preset pipe string well completion | |
| CN104632172A (en) | Method for controlling annulus pressure of gas field horizontal well immovable pipe column hydraulic sand blasting fracturing | |
| CN105822276A (en) | Inter-crack space synchronous water injection-oil extraction method of multistage fracturing horizontal well | |
| CN103912257B (en) | A kind of dragging multiple fracturing device with pressure | |
| CN104196512B (en) | Oil well horizontal well oil jacket is the same as the double envelope single deck tape-recorder volume fracturing tubing strings of note formula and fracturing process | |
| CN204082116U (en) | Oil well horizontal well oil jacket is with note formula two envelope single deck tape-recorder volume fracturing tubing string | |
| CN105221094A (en) | Horizontal well double-sealing single-clamp blowout prevention process | |
| CN105587300B (en) | Oil recovery method for horizontal well | |
| CN107269255A (en) | A kind of method and device that fine and close oil is exploited by the displacement of reservoir oil between cluster | |
| CN103821489B (en) | Horizontal well machinery layering is acidified combination process tubing string with hydraulic jetting fracturing | |
| CN104196492B (en) | A kind of dragging down-hole plugging valve with pressure | |
| CN106014370A (en) | Oil-pipe under-pressure dragging fracturing device and technology | |
| CN103061724B (en) | Towards the layering pressure control associating mining device easily telling powder and telling the two coal seam of sand | |
| CN105545272B (en) | Oil extraction method for ultra-low permeability water-sensitive reservoir/compact reservoir | |
| CN108005629A (en) | A kind of underground fracture sliding sleeve of electric control hydraulic driving | |
| CN209892171U (en) | Horizontal well section staggered displacement and imbibition displacement injection-production string | |
| CN202325277U (en) | Sectional uniform acidifying tubular column in sand control tubular column of oil-water well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211021 Address after: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Address before: 710018 room 1207, Changqing building, Changqing Xing Long Yuan District, Xi'an, Shaanxi Patentee before: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING COMPANY LIMITED CHANGQING DOWNHOLE TECHNOLOGY Co. |