CN202745846U - Perforating, fracturing and sand washing integrated tubular column for coiled tubing - Google Patents
Perforating, fracturing and sand washing integrated tubular column for coiled tubing Download PDFInfo
- Publication number
- CN202745846U CN202745846U CN 201220338058 CN201220338058U CN202745846U CN 202745846 U CN202745846 U CN 202745846U CN 201220338058 CN201220338058 CN 201220338058 CN 201220338058 U CN201220338058 U CN 201220338058U CN 202745846 U CN202745846 U CN 202745846U
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- fracturing
- coiled tubing
- sand washing
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- perforation
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- 239000004576 sand Substances 0.000 title claims abstract description 37
- 238000005406 washing Methods 0.000 title claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 238000010008 shearing Methods 0.000 claims abstract description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 210000000664 rectum Anatomy 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 3
- 238000012856 packing Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
The utility model discloses a coiled tubing perforation, fracturing and sand washing integration tubular column is designed for the integration operation that realizes perforation, fracturing and sand washing behind the pressure, by coiled tubing, connector, shearing giving up, mechanical type sleeve pipe collar locator, sprayer and tail pipe are connected and are formed, the sprayer outside is equipped with rightting piece and by pressing the fixed nozzle of cap, the tail pipe outside is equipped with righting piece, inside is equipped with cross baffle and steel ball, the tail pipe lower part has the guide shoe of the little through-hole of fluid for the equipartition. The string utilizes the tail pipe to replace and bear all functions of a conventional coiled tubing fracturing string centralizer, a check valve and a guide shoe, can shorten the distance from a nozzle to a sand surface, enables the ejector to have positive sand washing capacity, can realize perforation, fracturing and sand washing of an oil-gas layer by one string, and is high in construction efficiency. This tubular column is pressed through coiled tubing and is dragged and carry out sand packing between the layer and seal and separate, makes the construction section number unrestricted, adopts coiled tubing perforation and annular space fracturing, does benefit to increase fracturing construction scale, and after the fracturing, the pit shaft can keep big latus rectum, the later stage secondary of the oil gas well of being convenient for reforms transform the operation.
Description
Technical field
The utility model relates to a kind of coiled tubing perforation, pressure break and sand washing integrated pipe column, belongs to oil and gas wells in oil fields fracturing technique field.
Background technology
Long celebrating oil gas field multilayer build-up, opening as far as possible more multi-layered number has become one of effective way that improves well yield.Conventionally adopt the mode of mechanical packer and sliding bush combination to carry out separate stratum fracfturing, but limited with the hop count of this technological transformation, the pit shaft latus rectum is less after the pressure break.Although well completion of casing sliding sleeve separate stratum fracfturing technique can address the above problem, high to the cementing quality requirement, because there not being the perforation link, the phenomenon of the layer of not turning up the soil can appear pressing in the fracturing process.
The coiled tubing fracturing technique have transform the number of plies unrestricted, can with pressurely drag operation and pressure break after pit shaft keep the advantages such as large latus rectum, at present, be subjected to the restriction of coiled tubing size, each major oil and gas field uses the reforming technology of coiled tubing hydraulic jet perforation, annular fracturing usually, and this technique can be taked back-up sand layering and mechanical packer layering dual mode.The downhole tool of mechanical packer layering is complicated, has larger bit freezing risk.Because domestic fracturing pipe column of continuous oil pipe do not possess the sand washing function, in fracturing process and in the sand washing operation of pressure break after complete, be lowered to sand-flushing pipe column one time, so construction sequence is many, the cycle is long.
Summary of the invention
The purpose of this utility model is to provide a kind of coiled tubing perforation, pressure break and sand washing integrated pipe column, and it can with pressurely drag realizes perforation, pressure break and press the rear integrated operation of sand washing.
Concrete technical scheme of the present utility model is as follows:
This integrated pipe column coiled tubing lower end connects connector, and the connector lower end connects to shear gives up, and shears the lower end of giving up and connects the mechanical type casing collar locator (CCL), and mechanical casing collar locator lower end connects ejector, ejector lower end union tail.
The housing outer wall top of ejector is provided with uniform wiper block, and the housing barrel is provided with radially screw, and nozzle is fixed on radially in the screw by pressure cap.
The housing outer wall top of tail pipe is provided with uniform wiper block, the inner walls top cross baffle that is threaded, and steel ball is located at housing internal taper hole bottom, and lower housing portion is guide shoe, is evenly equipped with the fluid small through hole on the guide shoe barrel.
The utility model integrated pipe column utilizes tail pipe to substitute and bear the repertoire of conventional fracturing pipe column of continuous oil pipe centralizer, ball-and-seat and guide shoe, can shorten nozzle apart from the distance of sand face, make the standby positive sand washing ability of ejector, do not need to descend specially again sand-flushing pipe column, but one-trip string is realized perforation, pressure break and the sand washing of oil-gas Layer, and efficiency of construction is high.Carry out interlayer back-up sand packing by with pressure the dragging of coiled tubing, make the construction hop count unrestricted, adopt coiled tubing perforation and annular fracturing, can make string friction little, be beneficial to the pressing crack construction scale that increases, after pressure break finishes, pit shaft can keep large latus rectum, is convenient to the Late reformation operation of Oil/gas Well.
Description of drawings
Fig. 1 is coiled tubing perforation, pressure break and sand washing integrated pipe column schematic diagram.
Fig. 2 is the ejector sectional drawing.
Fig. 3 is the tail pipe sectional drawing.
The specific embodiment
Further specify referring to figs. 1 through 3 couples of embodiment of the present utility model:
Embodiment:
This integrated pipe column coiled tubing 1 lower end connects connector 2, connector 2 lower ends connect to shear gives up 3, shearing 3 lower ends of giving up connect mechanical type casing collar locator (CCL) 4, and mechanical casing collar locator 4 lower ends connect ejector 5, ejector 5 lower end union tails 6.
The housing 51 outer wall tops of ejector 5 are provided with six uniform wiper blocks 54, and housing 5 barrels are provided with the radially screw that three apertures are φ 4.0～φ 5.5mm, and nozzle 53 is fixed on radially in the screw by pressure cap 52.
The housing 61 outer wall tops of tail pipe 6 are provided with six uniform wiper blocks 65, and steel ball 63 is located at housing 61 internal taper hole bottoms, and the cross baffle 62 of restriction steel ball 63 scopes of activities is threaded in housing 61 upper inside wall.Housing 61 bottoms are the columnar guide shoe 64 of back cover, are evenly equipped with the fluid small through hole on guide shoe 64 barrels.
The utility model coiled tubing perforation, pressure break and the sand washing integrated pipe column course of work are as follows:
1. be lowered to integrated pipe column, by mechanical casing collar locator 4 location, ejector 5 aimed at the first floor position that needs transformation.
2. hydraulic jet perforation: inject perforating fluid and carry out hydraulic perforating from coiled tubing 1, when load fluid to the distance of nozzle 53 is 200m, improve discharge capacity, abrasive perforating, perforating fluid injects from coiled tubing 1, returns out from oil, cover annular space.
3, annular fracturing: after perforation is finished, inject fracturing fluid from oil, cover annular space, coiled tubing 1 keeps 0.1m simultaneously
3The fracturing fluid discharge capacity of/min.
4, the anti-back-up sand that circulates: behind the complete first paragraph of pressure break, replace corresponding sand amount by main pressure break latter end oil, cover annular space, sedimentation was visited the sand face after 1 hour.Such as needs, can carry out the reverse circulation sand washing by this tubing string, adjust sand face height.
5, reverse circulation sand washing: repeat the 1-4 step and finish all the other two-layer pressure breaks, utilize the direct circulation of this tubing string sand grains to be rushed (because tail pipe 6 length are shorter, nozzle 53 is apart from sand washing sand identity distance from also corresponding shortening, sand cleaning fluid out can feed through to the sand washing sand face that needs from nozzle 53, and sand grains is rushed), then adopt anti-circulation that sand grains is carried out pit shaft, finish the sand washing operation.
6, completion: after sand washing is finished, trip out integrated pipe column, be lowered to conventional flow string, completion production.
Claims (1)
1. a coiled tubing perforation, pressure break and sand washing integrated pipe column is characterized in that:
The coiled tubing lower end connects connector (2), connector (2) lower end connects shears give up (3), shearing (3) lower end of giving up connects mechanical type casing collar locator (CCL) (4), mechanical casing collar locator (4) lower end connects ejector (5), ejector (5) lower end union tail (6);
Housing (51) the outer wall top of ejector (5) is provided with uniform wiper block (54), and housing (5) barrel is provided with radially screw, and nozzle (53) is fixed on radially in the screw by pressure cap (52);
Housing (61) the outer wall top of tail pipe (6) is provided with uniform wiper block (65), housing (61) the upper inside wall cross baffle (62) that is threaded, steel ball (63) is located at housing (61) internal taper hole bottom, housing (61) bottom is guide shoe (64), is evenly equipped with the fluid small through hole on guide shoe (64) barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338058 CN202745846U (en) | 2012-07-12 | 2012-07-12 | Perforating, fracturing and sand washing integrated tubular column for coiled tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338058 CN202745846U (en) | 2012-07-12 | 2012-07-12 | Perforating, fracturing and sand washing integrated tubular column for coiled tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202745846U true CN202745846U (en) | 2013-02-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220338058 Expired - Fee Related CN202745846U (en) | 2012-07-12 | 2012-07-12 | Perforating, fracturing and sand washing integrated tubular column for coiled tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202745846U (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244083A (en) * | 2013-04-25 | 2013-08-14 | 中国石油天然气股份有限公司 | Foam-assisted hydraulic sand-blasting perforation process pipe column and method |
| CN103306645A (en) * | 2013-06-20 | 2013-09-18 | 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 | Once drilling fracturing completion pipe string of horizontal well and drilling fracturing completion technology |
| CN103498648A (en) * | 2013-10-17 | 2014-01-08 | 中国科学院广州能源研究所 | Method and device for exploiting aquo-complex through combination of pressure reducing technology and hydraulic fracturing technology |
| CN104213895A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Hydraulic sand-blasting perforation fracturing and sand-filling combined process method |
| CN104213891A (en) * | 2013-06-05 | 2014-12-17 | 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 |
| CN104481489A (en) * | 2014-11-11 | 2015-04-01 | 中国石油天然气股份有限公司 | Coiled tubing fracturing and well completion integrated process method for gas well vertical well |
| CN105089554A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Oil field horizontal well pressurized dragging fracturing reconstruction operation valve and reverse well-flushing unfreezing method |
| CN105089553A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Oil field horizontal well pressurized multi-section fracturing transformation operation valve and reverse well-flushing unfreezing method |
| CN105201461A (en) * | 2015-09-02 | 2015-12-30 | 北京泰坦通源天然气资源技术有限公司 | Multistage sand jet perforation and fracture combined operation method adopting coiled tubing and bottom packer |
| CN104453798B (en) * | 2014-10-31 | 2017-02-15 | 克拉玛依市红都有限责任公司 | PVC sleeve pipe waterpower sand blasting perforation device and using method thereof |
| CN107905776A (en) * | 2017-12-04 | 2018-04-13 | 中国石油天然气股份有限公司 | Gas well fracturing liquid drainage system and method |
| CN108104757A (en) * | 2017-08-17 | 2018-06-01 | 中国石油天然气股份有限公司 | Unfreezing tool and unfreezing method |
| CN109469463A (en) * | 2018-10-23 | 2019-03-15 | 中国石油集团渤海钻探工程有限公司 | The more shower holes of straight well coiled tubing and back-up sand connection make fracturing process |
| CN109989723A (en) * | 2017-12-29 | 2019-07-09 | 中国石油天然气股份有限公司 | Multi-cluster perforation combined fracturing sealing device for blasting releasing |
| CN111877999A (en) * | 2020-08-24 | 2020-11-03 | 中国石油化工股份有限公司 | Coiled tubing hydraulic sand blasting perforation setting bridge plug integrated tubular column and construction method |
| CN112443286A (en) * | 2019-09-04 | 2021-03-05 | 中国石油化工股份有限公司 | Plasma cutting device and method for underground oil casing |
| CN113818878A (en) * | 2021-10-28 | 2021-12-21 | 烟台杰瑞石油装备技术有限公司 | Hydraulic fracturing rock breaking method and system |
-
2012
- 2012-07-12 CN CN 201220338058 patent/CN202745846U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244083B (en) * | 2013-04-25 | 2015-10-14 | 中国石油天然气股份有限公司 | Foam-assisted hydraulic sand-blasting perforation process pipe column and method |
| CN103244083A (en) * | 2013-04-25 | 2013-08-14 | 中国石油天然气股份有限公司 | Foam-assisted hydraulic sand-blasting perforation process pipe column and method |
| CN104213895B (en) * | 2013-06-05 | 2018-02-02 | 中国石油天然气股份有限公司 | Hydraulic sand-blasting perforation fracturing and sand-filling combined process method |
| CN104213895A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Hydraulic sand-blasting perforation fracturing and sand-filling combined process method |
| CN104213891A (en) * | 2013-06-05 | 2014-12-17 | 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 |
| CN103306645A (en) * | 2013-06-20 | 2013-09-18 | 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 | Once drilling fracturing completion pipe string of horizontal well and drilling fracturing completion technology |
| CN103306645B (en) * | 2013-06-20 | 2015-10-28 | 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 | Horizontal well the pressure of the drill splits completion tubular column and technique thereof |
| CN103498648A (en) * | 2013-10-17 | 2014-01-08 | 中国科学院广州能源研究所 | Method and device for exploiting aquo-complex through combination of pressure reducing technology and hydraulic fracturing technology |
| CN105089554A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Oil field horizontal well pressurized dragging fracturing reconstruction operation valve and reverse well-flushing unfreezing method |
| CN105089553A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Oil field horizontal well pressurized multi-section fracturing transformation operation valve and reverse well-flushing unfreezing method |
| CN104453798B (en) * | 2014-10-31 | 2017-02-15 | 克拉玛依市红都有限责任公司 | PVC sleeve pipe waterpower sand blasting perforation device and using method thereof |
| CN104481489A (en) * | 2014-11-11 | 2015-04-01 | 中国石油天然气股份有限公司 | Coiled tubing fracturing and well completion integrated process method for gas well vertical well |
| CN105201461A (en) * | 2015-09-02 | 2015-12-30 | 北京泰坦通源天然气资源技术有限公司 | Multistage sand jet perforation and fracture combined operation method adopting coiled tubing and bottom packer |
| CN108104757A (en) * | 2017-08-17 | 2018-06-01 | 中国石油天然气股份有限公司 | Unfreezing tool and unfreezing method |
| CN108104757B (en) * | 2017-08-17 | 2020-04-10 | 中国石油天然气股份有限公司 | Unfreezing tool and unfreezing method |
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| CN109989723A (en) * | 2017-12-29 | 2019-07-09 | 中国石油天然气股份有限公司 | Multi-cluster perforation combined fracturing sealing device for blasting releasing |
| CN109989723B (en) * | 2017-12-29 | 2021-11-02 | 中国石油天然气股份有限公司 | Multi-cluster perforation combined fracturing sealing device for blasting releasing |
| CN109469463A (en) * | 2018-10-23 | 2019-03-15 | 中国石油集团渤海钻探工程有限公司 | The more shower holes of straight well coiled tubing and back-up sand connection make fracturing process |
| CN112443286A (en) * | 2019-09-04 | 2021-03-05 | 中国石油化工股份有限公司 | Plasma cutting device and method for underground oil casing |
| CN112443286B (en) * | 2019-09-04 | 2023-12-29 | 中国石油化工股份有限公司 | Underground oil casing plasma cutting device and method |
| CN111877999A (en) * | 2020-08-24 | 2020-11-03 | 中国石油化工股份有限公司 | Coiled tubing hydraulic sand blasting perforation setting bridge plug integrated tubular column and construction 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: 20130220 Termination date: 20210712 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |