CN103195403A - Large sand quantity anti-pollution sand blower - Google Patents
Large sand quantity anti-pollution sand blower Download PDFInfo
- Publication number
- CN103195403A CN103195403A CN2013101359572A CN201310135957A CN103195403A CN 103195403 A CN103195403 A CN 103195403A CN 2013101359572 A CN2013101359572 A CN 2013101359572A CN 201310135957 A CN201310135957 A CN 201310135957A CN 103195403 A CN103195403 A CN 103195403A
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- Prior art keywords
- sand
- valve
- sliding sleeve
- central tube
- valve seat
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- 239000004576 sand Substances 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims description 13
- 238000013459 approach Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 101100041681 Takifugu rubripes sand gene Proteins 0.000 description 20
- 238000010276 construction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to a large sand amount anti-pollution sand blower used for implementing underground layered fracturing in oil extraction production. An inner hole at the lower end of the upper joint of the sand blaster is connected with a central pipe, the outer wall of the upper joint of the sand blaster is connected with an adjusting ring, a spring and a valve are sequentially sleeved on the outer wall of the central pipe below the adjusting ring, and the lower end of the valve is seated at the upper opening of a valve seat; an annular cavity is arranged between the valve seat and the central pipe, a sand outlet is arranged on the central pipe wall below the valve, and the annular cavity is communicated with the sand outlet; the lower end of the valve seat is connected with the lower joint through a fixing pin; the center tube in suit sliding sleeve to through the pin fixed of sand outlet upper portion, the lower extreme of sliding sleeve connects the direction head, installs the jump ring between the upper end face of direction head and the sliding sleeve. The fracturing string composed of the sand blaster can realize the fracturing of more than four layers of fixed strings, and realizes the maximum sand passing amount of a single sand blaster to be 100m3The reconstruction radius of fracturing reconstruction is increased, and the recovery ratio is improved.
Description
Technical field
The used anti-pollution sandblaster of a kind of large sand amount when the down-hole being implemented separate stratum fracfturing in producing the present invention relates to recover the oil.
Background technology
At present, when developing oil fields old well, can further improve oil recovery rate by fracturing technology.Adding sand can increase the radius of fracturing reform, has formed higher flow conductivity, is conducive to further improve oil recovery rate.In the employed sandblaster of existing fracturing string, matching used with hydraulic expansion formula packer is exactly spring valve sandblaster, the super only 50m of the maximum sand-passing amount of this fracturing tool sandblaster
3, can not satisfy oil field development far away to the requirement of large sand amount construction.
Summary of the invention
In order to improve monomer sandblaster sand-passing amount, the invention provides the anti-pollution sandblaster of a kind of large sand amount.The fracturing string that this sandblaster is formed can be realized four layers of fracturing without pulling string, has realized that the maximum sand-passing amount of single sandblaster is 100m
3, increased the transformation radius of fracturing reform, improved recovery ratio.
Technical solution of the present invention: the anti-pollution sandblaster of a kind of large sand amount, comprise top connection and lower contact, described top connection lower end endoporus connects central tube, outer wall connects adjustable ring, pocketed springs and valve successively on the central tube outer wall of described adjustable ring below, the lower end of described valve is sitting in the suitable for reading of valve seat; Between valve seat and the central tube ring cavity is arranged, have clearance hole on the center tube wall of valve below, above-mentioned ring cavity communicates with described clearance hole; The lower end of above-mentioned valve seat is connected with described lower contact by fixing pin; Suit sliding sleeve in the described central tube, and fix by the pin on clearance hole top, the lower end of sliding sleeve connects guide head, between the upper surface of guide head and the sliding sleeve jump ring is installed.
Limit, the hole wall thickness of clearance hole approaches greater than the wall thickness at central tube two ends and external diameter and valve seat internal diameter on the above-mentioned central tube, and the aperture that shakes out is the plane.
Be provided with the valve sealing ring between described valve and central tube, be provided with sealing ring between valve seat and the lower contact, be provided with the sliding sleeve sealing ring between sliding sleeve lower end and lower contact.
Beneficial effect of the present invention: the effect of the anti-pollution sandblaster of this large sand amount provides fracturing fluid and fracturing sand to enter the passage on stratum when being pressure break.Connect to form tubing string by a plurality of these sandblasters, play cover step by step by pitching, realize multiple fracturing construction from bottom to top.The outer wall of this central tube clearance hole adopts the step design, the wall thickness of the central tube of the circumferential both sides of clearance hole increases with the valve seat internal diameter approaching, has increased the intensity of central tube, can avoid when accident treatment simultaneously, spring and valve to well, increase intractability from the central tube landing.The fracturing string that this sandblaster is formed, but pressure break is four layers under the situation of fixed tubular column, this sandblaster is owing to increased the external diameter at clearance hole place on the central tube, increased the sectional area at sand export place, increased intensity and the abrasion resistance at clearance hole place, single sandblaster adds the sand amount in 4 hours and reaches 100m
3, by strengthening scope of construction item, increase the fracturing reform radius, improve the degree of gathering of remaining oil and the injection effect of injection well, improve the effect of gathering of remaining oil.Use this sandblaster pressing crack construction simple to operate, save cost, have broad application prospects at latter period of oilfield development.In addition, during non-notes sand, this sandblaster valve and valve seat are in the long state that closes, can barrier oil cover annular space with oil pipe in passage, in the operation of a lower tubular column, anti-pollution function is arranged.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the sectional drawing of A-A among Fig. 1;
Fig. 3 is the structural representation of clearance hole on the sliding sleeve in 1;
Fig. 4 is B-B sectional drawing among Fig. 3.
1-top connection among the figure, 2-adjustable ring, 3-spring, 4-central tube, 5-valve, 6-valve sealing ring, 7-pin, 8-sliding sleeve, 9-valve seat, 10-sealing ring, 11-fixing pin, 12-lower contact, 13-sliding sleeve sealing ring, 14-jump ring, 15-guide head, 16-clearance hole.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
By Figure 1 and Figure 2, the anti-pollution sandblaster of this large sand amount comprises top connection 1 and lower contact 11, described top connection 1 lower end inner hole thread connects central tube 4, outer wall thread connects adjustable ring 2, pocketed springs 3 and valve 5 successively on the central tube outer wall of described adjustable ring 2 belows, the lower end of described valve 5 is sitting in the suitable for reading of valve seat 9, between valve seat 9 and the central tube 4 ring cavity is arranged, have clearance hole 16 on the center tube wall of valve below, above-mentioned ring cavity communicates with described clearance hole 16, pressure in the injection of ground fracturing unit truck, compressed through the effect lower spring 3 that the central tube sand export makes progress, valve 5 and spring 3 formed the liquid passage to the motion of top connection 1 direction between valve 5 and the valve seat 9, carried out pressing crack construction; Above-mentioned valve seat 9 increases abrasion resistance through Overheating Treatment, and the lower end is connected with described lower contact 12 by fixing pin 11; Suit sliding sleeve 8 in the described central tube 4, and fixing by the pin 7 on clearance hole 16 tops, and the lower end of sliding sleeve 8 connects guide head 15, between the upper surface of guide head 15 and the sliding sleeve 8 jump ring 14 is installed, as shown in Figure 1.
In addition, the outer wall of clearance hole 16 adopts the step design on this central tube 4, the wall thickness of the central tube of the circumferential both sides of clearance hole increases and approaches with the valve seat internal diameter, only differ 0.1 millimeter, increased the intensity of central tube, can avoid when accident treatment simultaneously, spring 3 and valve 5 to well, increase intractability such as Fig. 2, Fig. 3 and shown in Figure 4 from the central tube landing.
During construction if 1 fractured layer of a pressure break, an anti-pollution sandblaster of large sand amount and the interior no sliding sleeve of using, during as 2～3 fractured layers of need pressure break, need to install 2～3 sandblasters on the fracturing string, except no sliding sleeve in the central tube of next stage sandblaster, fixedly there is sliding sleeve 8 at clearance hole 8 places by pin 7 on the central tube 4 of the sandblaster at the top and middle part, and the lower end screw thread of sliding sleeve 8 is connected with guide head 15, between the upper surface of guide head 15 and the sliding sleeve 8 jump ring 14 is installed.During the pressure break second layer, in tubing string, drop into steel ball, steel ball drops on sliding sleeve 8 tops of middle part sandblaster, destroy sliding sleeve 8, jump ring 14 and guide head 15 under the effect of hydraulic pressure, open clearance hole, it is descending that steel ball heads on sliding sleeve 8 and jump ring 14 and guide head 15, fall the interior step place on the sandblaster clearance hole top of foot, close the sandblaster clearance hole of bottom, jump ring 14 is stuck in the central tube clearance hole lower step of nethermost sandblaster, prevents string on the sliding sleeve 8.Guide head 15 is used for installing the size of jump ring 14 and identification sliding sleeve 8.
In order to make sandblaster have good sealing effectiveness, 4 of described valve 5 and central tubes are provided with valve sealing ring 6, are provided with sealing ring 10 between valve seat 9 and the lower contact 12, and sliding sleeve 8 lower end inwalls and 12 of lower contacts are provided with sliding sleeve sealing ring 13.
During actual the use, at first the top connection upper end with the anti-pollution sandblaster of large sand amount is connected fastening with the lower contact lower end with operating tool string.Can adopt a plurality of sandblasters to combine fixed tubular column during connection according to the situation of fractured well, sit the fracturing string of pressing 1～3 layer, can also increase by 1 fractured layer if propose construction on adopting.The pressure break order from bottom to top, direct pressure break during the pressure break first floor, in tubing string, inject highly pressurised liquid, a highly pressurised liquid part enters and makes packer setting in the packing element, cross the anti-pollution sandblaster clearance hole of this large sand amount through highly pressurised liquid then and enter pre-fractured layer and press off the crack, through making seam, add sand, replacing and finish this lamination and split.Throw φ 38mm steel ball in the pressure break second layer forward direction tubing string, sliding sleeve 8 and jump ring 14 and the guide head 15 of the anti-pollution sandblaster of large sand amount in the middle of destroying under the effect of hydraulic pressure are opened clearance hole, form the oil jacket communication passage.Ball heads on the sand export place that sliding sleeve 8 and jump ring 14 and guide head 15 go downwards to the sandblaster central tube 4 of foot, closes this clearance hole, and fracturing fluid enters second fractured layer through the anti-pollution sandblaster of middle large sand amount.Throw φ 44mm steel ball in the 3rd layer of forward direction tubing string of pressure break, following process is identical with second layer fracturing process.
The fracturing string that this anti-pollution sandblaster is formed, but under the situation of fixed tubular column eight layers of pressure breaks, improved operating efficiency.Use this sandblaster pressing crack construction simple to operate, save cost, safety and environmental protection, have broad application prospects at latter period of oilfield development.
Claims (3)
1. anti-pollution sandblaster of large sand amount, comprise top connection (1) and lower contact (12), it is characterized in that: described top connection (1) lower end endoporus connects central tube (4), outer wall connects adjustable ring (2), pocketed springs (3) and valve (5) successively on the central tube outer wall of described adjustable ring (2) below, the lower end of described valve (5) is sitting in the suitable for reading of valve seat (9); Between valve seat (9) and the central tube (4) ring cavity is arranged, have clearance hole (16) on the center tube wall of valve below, above-mentioned ring cavity communicates with described clearance hole (16); The lower end of above-mentioned valve seat (9) is connected with described lower contact (12) by fixing pin (11); The interior suit sliding sleeve of described central tube (4) (8), and fixing by the pin (7) on clearance hole (16) top, and the lower end of sliding sleeve (8) connects guide head (15), between the upper surface of guide head (15) and the sliding sleeve (8) jump ring (14) is installed.
2. the anti-pollution sandblaster of large sand amount according to claim 1 is characterized in that: limit, the hole wall thickness of clearance hole on the above-mentioned central tube (16) approaches greater than the wall thickness at central tube two ends and external diameter and valve seat internal diameter, and the aperture that shakes out is the plane.
3. the anti-pollution sandblaster of large sand amount according to claim 1, it is characterized in that: be provided with valve sealing ring (6) between described valve (5) and central tube (4), be provided with sealing ring (10) between valve seat (9) and the lower contact (11), be provided with sliding sleeve sealing ring (13) between sliding sleeve (8) lower end and lower contact (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101359572A CN103195403A (en) | 2013-04-18 | 2013-04-18 | Large sand quantity anti-pollution sand blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101359572A CN103195403A (en) | 2013-04-18 | 2013-04-18 | Large sand quantity anti-pollution sand blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103195403A true CN103195403A (en) | 2013-07-10 |
Family
ID=48718202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101359572A Pending CN103195403A (en) | 2013-04-18 | 2013-04-18 | Large sand quantity anti-pollution sand blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103195403A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485754A (en) * | 2013-10-14 | 2014-01-01 | 中国石油化工股份有限公司 | Integrated underground hydraulic control fully-opened type sliding sleeve abrasive blasting and packing staged fracturing device |
| CN110145292A (en) * | 2019-05-18 | 2019-08-20 | 中国石油天然气股份有限公司 | Elastic lock sleeve sand blower |
| CN115110941A (en) * | 2022-06-23 | 2022-09-27 | 大庆宏测技术服务有限公司 | Sand blower for multi-layer fracturing |
| CN115704294A (en) * | 2021-08-17 | 2023-02-17 | 中国石油天然气集团有限公司 | Water injection fracturing integrated detachable packer |
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|---|---|---|---|---|
| US4694905A (en) * | 1986-05-23 | 1987-09-22 | Acme Resin Corporation | Precured coated particulate material |
| CN2769511Y (en) * | 2005-03-02 | 2006-04-05 | 大庆油田有限责任公司 | Small-diameter fracturing sand blower |
| CN2861481Y (en) * | 2005-08-24 | 2007-01-24 | 大庆油田有限责任公司 | Dual sliding sleeve sandblast |
| CN101067373A (en) * | 2007-06-15 | 2007-11-07 | 新疆石油管理局采油工艺研究院 | One line tube column partial pressure three-layer tube column and using method thereof |
| CN201031679Y (en) * | 2007-06-09 | 2008-03-05 | 大庆油田有限责任公司 | Deep layer gas well multiple fracturing tools string |
| CN201047279Y (en) * | 2007-06-15 | 2008-04-16 | 新疆石油管理局采油工艺研究院 | On-off connector sanding machines |
| CN201047278Y (en) * | 2007-06-15 | 2008-04-16 | 新疆石油管理局采油工艺研究院 | Pipe column partial pressure three layers pipe column |
| CN201170091Y (en) * | 2008-02-03 | 2008-12-24 | 梁文瑞 | Anti-pollution sand spraying device capable of re-washing |
| US20100071902A1 (en) * | 2008-09-20 | 2010-03-25 | Unimin Corporation | Method of making proppants used in gas or oil extraction |
| CN201730603U (en) * | 2010-06-24 | 2011-02-02 | 大庆油田有限责任公司 | Large-delivery capacity and large-sand capacity sand sprayer |
-
2013
- 2013-04-18 CN CN2013101359572A patent/CN103195403A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4694905A (en) * | 1986-05-23 | 1987-09-22 | Acme Resin Corporation | Precured coated particulate material |
| CN2769511Y (en) * | 2005-03-02 | 2006-04-05 | 大庆油田有限责任公司 | Small-diameter fracturing sand blower |
| CN2861481Y (en) * | 2005-08-24 | 2007-01-24 | 大庆油田有限责任公司 | Dual sliding sleeve sandblast |
| CN201031679Y (en) * | 2007-06-09 | 2008-03-05 | 大庆油田有限责任公司 | Deep layer gas well multiple fracturing tools string |
| CN101067373A (en) * | 2007-06-15 | 2007-11-07 | 新疆石油管理局采油工艺研究院 | One line tube column partial pressure three-layer tube column and using method thereof |
| CN201047279Y (en) * | 2007-06-15 | 2008-04-16 | 新疆石油管理局采油工艺研究院 | On-off connector sanding machines |
| CN201047278Y (en) * | 2007-06-15 | 2008-04-16 | 新疆石油管理局采油工艺研究院 | Pipe column partial pressure three layers pipe column |
| CN201170091Y (en) * | 2008-02-03 | 2008-12-24 | 梁文瑞 | Anti-pollution sand spraying device capable of re-washing |
| US20100071902A1 (en) * | 2008-09-20 | 2010-03-25 | Unimin Corporation | Method of making proppants used in gas or oil extraction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485754A (en) * | 2013-10-14 | 2014-01-01 | 中国石油化工股份有限公司 | Integrated underground hydraulic control fully-opened type sliding sleeve abrasive blasting and packing staged fracturing device |
| CN103485754B (en) * | 2013-10-14 | 2016-06-22 | 中国石油化工股份有限公司 | Underground hydraulic-control full-open type sliding sleeve sandblasting and packing integration segmented fracturing device |
| CN110145292A (en) * | 2019-05-18 | 2019-08-20 | 中国石油天然气股份有限公司 | Elastic lock sleeve sand blower |
| CN115704294A (en) * | 2021-08-17 | 2023-02-17 | 中国石油天然气集团有限公司 | Water injection fracturing integrated detachable packer |
| CN115110941A (en) * | 2022-06-23 | 2022-09-27 | 大庆宏测技术服务有限公司 | Sand blower for multi-layer fracturing |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130710 |