CN204060654U - Large-displacement sand blower capable of returning - Google Patents
Large-displacement sand blower capable of returning Download PDFInfo
- Publication number
- CN204060654U CN204060654U CN201420332919.6U CN201420332919U CN204060654U CN 204060654 U CN204060654 U CN 204060654U CN 201420332919 U CN201420332919 U CN 201420332919U CN 204060654 U CN204060654 U CN 204060654U
- Authority
- CN
- China
- Prior art keywords
- central tube
- sliding sleeve
- sheath
- pin
- sandblaster
- 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
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to a but big discharge flow flowback sand blower. The problems that in the prior art, a sand blaster cannot adapt to high construction discharge capacity and large flow return liquid amount in fracture network fracturing construction are mainly solved. The method is characterized in that: the lower end of the upper joint is internally connected with a central tube in a threaded manner, the outer part of the lower end of the upper joint is connected with a sheath by a fixing pin, the outer part of the central tube is connected with the sheath of the central tube by a pin, the central tube and the sheath of the central tube are respectively provided with two sand outlets with 1/4 circumferences in the same direction, the inner part of the central tube is connected with a sliding sleeve, the lower end of a sealing section of the sliding sleeve is provided with three back-discharge holes, the lower end of the sliding sleeve is connected with a guide head; the outer thread of the lower end of the central pipe is connected with the upper end of the lower joint, and the outer part of the upper end of the lower joint is connected with the valve seat through a lower joint pin. The large-discharge-quantity flowback sand blower can realize five-layer fracturing without moving a pipe column, and meets the requirement of fracture network fracturing construction with high construction discharge quantity and large flowback liquid quantity.
Description
Technical field
The utility model relates to a kind of sandblaster in oil field development technical field, particularly a kind of huge discharge reversal sandblaster.
Background technology
At present, oil field adopts seam net pressure break can obtain better fracturing effect, effectively improves single well productivity and measure period of validity.Seam net pressing crack construction discharge capacity is high, returns lifting rate large.At present spring valve sandblaster be applicable to the pressure break of discharge capacity 5m3/min, below pressure 55MPa, and cannot the row of returning after pressure break, the demand of seam net pressure break can not be met.
Summary of the invention
The utility model be overcome in background technology exist existing sandblaster be not suitable with seam net pressing crack construction discharge capacity high, return the large problem of lifting rate, and a kind of huge discharge reversal sandblaster is provided, this huge discharge reversal sandblaster, can fracturing without pulling string five layers, achieve maximum operation pressure 60MPa, maximum operational discharge capacity 8m3/min, returns lifting rate 500m3, meet operational discharge capacity high, return the large seam net pressing crack construction of lifting rate.
The invention for solving the technical problem reaches by following technical scheme: this huge discharge reversal sandblaster, comprise top connection and lower contact, described top connection lower end internal thread connects central tube, and outside, top connection lower end connects sheath with fixing pin, central tube outside connects central tube sheath with pin, central tube and central tube sheath have two sand exports of quarter turn in the same way, central tube inside connects sliding sleeve with sliding sleeve pin, sliding sleeve seal section lower end has three and returns round, the lower end of sliding sleeve has been threaded guide head, between the upper surface of guide head and sliding sleeve, jump ring is installed, central tube lower end external screw thread connects lower contact upper end, and outside, lower contact upper end connects valve seat by lower contact pin, has annular space to communicate with sand export between valve seat with central tube sheath.
The utility model can have following beneficial effect compared with above-mentioned background technology: this huge discharge reversal sandblaster, utilizes the chock pressure difference of the annular space between valve seat top and central tube to realize packer setting and make fracturing fluid and fracturing sand enter stratum by this passage during pressure break.Fix with the lower contact pin of to be cylinder lower end be in upper end helicitic texture between valve seat and lower contact, prevent lower contact under high flow rate operation condition to rotate dropout.Central tube inwall sand export upper end sliding sleeve pin is fixed in the round nest of sliding sleeve external surface, produces to rotate to be rubbed by the O RunddichtringO of upper end under preventing sliding over high flow rate operation, affects the sealing of sliding sleeve.Sliding sleeve seal section lower end is bored three and is returned round, realizes reversal after pressure break.This sandblaster by this new structure, enhances sandblaster anti-wear performance, such that this sandblaster is safe and reliable under high flow rate operation operating mode adds sand, and can carry out large liquid measure return row after pressure break.The tubing string be made up of this sandblaster can realize huge discharge reversal and sit pressure five layers of pressing crack construction.
accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is A-A generalized sections in Fig. 1.
In figure: 1-top connection, 2-fixing pin, 3-sheath, 4-central tube, 5-central tube sheath, 6-sliding sleeve pin, 7-sliding sleeve, 8-valve seat, 9-pin, 10-O RunddichtringO, 11-lower contact pin, 12-lower contact, 13-sliding sleeve sealing ring, 14-return round, 15-jump ring, 16-guide head.
detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Shown in as shown in accompanying drawing 1 composition graphs 2, this huge discharge reversal sandblaster, comprise top connection 1 and lower contact 12, top connection 1 lower end internal thread connects central tube 4, and outside, top connection 1 lower end connects sheath 3 with fixing pin 2, central tube 4 outside connects central tube sheath 5 with pin 9, central tube 4 and central tube sheath 5 have two sand exports of quarter turn in the same way, central tube 4 inside connects sliding sleeve 7 with sliding sleeve pin 6, sliding sleeve 7 seal section lower end has three and returns round 14, the lower end of sliding sleeve 7 has been threaded guide head 16, between the upper surface of guide head 16 and sliding sleeve 7, jump ring 15 is installed, central tube 4 lower end external screw thread connects lower contact 12 upper end, and outside, lower contact 12 upper end connects valve seat 8 by lower contact pin 11, has annular space to communicate with sand export between valve seat 8 with central tube sheath 5, in order to make sandblaster have good sealing effectiveness, be provided with O RunddichtringO 10 between valve seat 8 and lower contact 12, sliding sleeve 7 upper end and middle part are provided with sliding sleeve sealing ring 13.
This huge discharge reversal sandblaster, if only pressure break 1 fractured layer uses huge discharge reversal sandblaster without sliding sleeve 7 during construction, during as 2 ~ 5 fractured layer constructions need be carried out, fracturing string needs installation 2 ~ 5 huge discharge reversal sandblasters, each higher level's sandblaster central tube 4 inside connects sliding sleeve 7 with sliding sleeve pin 6, sliding sleeve 7 seal section lower end is bored three and is returned round 14, and the lower end of sliding sleeve 7 has been threaded guide head 16, is provided with jump ring 15 between the upper surface of guide head 16 and sliding sleeve 7.Direct pressure break during pressure break first floor, during the pressure break second layer, steel ball is dropped in tubing string, steel ball drops on huge discharge reversal sandblaster sliding sleeve 7 top, lower several second level, under the effect of hydraulic pressure, destroy the sliding sleeve 7 of this grade of sandblaster, jump ring 15 and guide head 16, open clearance hole, it is descending that steel ball heads on sliding sleeve 7 and jump ring 15 and guide head 16, fall the huge discharge reversal sandblaster clearance hole upper step place of most subordinate, jump ring 15 is stuck in the central tube clearance hole lower step of most subordinate sandblaster.The rest may be inferred for other intervals of pressure break top.Carry out the row of returning after pressure break, the fracturing fluid in stratum by the annulus access between central tube sheath 5 and valve seat 8, can enter in sandblaster central tube through returning round 14, returning be discharged to ground through oil pipe.
Embodiments of the present invention are: be first connected fastening by the top connection upper end of huge discharge reversal sandblaster with operating tool string with lower contact lower end.Multiple sandblaster can be adopted to combine the fracturing string of fixed tubular column seat pressure 1 ~ 5 layer according to the situation of fractured well during connection.Pressure break order from bottom to top, direct pressure break during pressure break first floor, highly pressurised liquid is injected in tubing string, a highly pressurised liquid part enters in packing element and makes packer setting, then highly pressurised liquid enters pre-fractured layer through this huge discharge reversal sandblaster clearance hole and presses off crack, through making seam, adds sand, has replaced this lamination and split.Drop into before the pressure break second layer, the sliding sleeve 7 of this grade of sandblaster, jump ring 15 and guide head 16 is destroyed under the effect of hydraulic pressure, open clearance hole, it is descending that steel ball heads on sliding sleeve 7 and jump ring 15 and guide head 16, fall the huge discharge reversal sandblaster clearance hole upper step place of most subordinate, jump ring 15 is stuck in the central tube clearance hole lower step of most subordinate sandblaster.The rest may be inferred for other intervals of pressure break top.Carry out the row of returning after pressure break, the fracturing fluid in stratum by the annulus access between central tube sheath 5 and valve seat 8, can enter in sandblaster central tube through returning round 14, returning be discharged to ground through oil pipe.
Claims (2)
1. a huge discharge reversal sandblaster, comprise top connection (1) and lower contact (12), it is characterized in that: described top connection (1) lower end internal thread connects central tube (4), and outside, top connection (1) lower end connects sheath (3) with fixing pin (2), central tube (4) outside connects central tube sheath (5) with pin (9), central tube (4) and central tube sheath (5) have two sand exports of quarter turn in the same way, central tube (4) inside connects sliding sleeve (7) with sliding sleeve pin (6), sliding sleeve (7) seal section lower end has three and returns round (14), the lower end of sliding sleeve (7) has been threaded guide head (16), between the upper surface of guide head (16) and sliding sleeve (7), jump ring (15) is installed, central tube (4) lower end external screw thread connects lower contact (12) upper end, and outside, lower contact (12) upper end connects valve seat (8) by lower contact pin (11), has annular space to communicate with sand export between valve seat (8) with central tube sheath (5).
2. huge discharge reversal sandblaster according to claim 1, is characterized in that: be provided with O RunddichtringO (10) between described valve seat (8) and lower contact (12), sliding sleeve (7) upper end and middle part are provided with sliding sleeve sealing ring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420332919.6U CN204060654U (en) | 2014-06-20 | 2014-06-20 | Large-displacement sand blower capable of returning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420332919.6U CN204060654U (en) | 2014-06-20 | 2014-06-20 | Large-displacement sand blower capable of returning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204060654U true CN204060654U (en) | 2014-12-31 |
Family
ID=52202192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420332919.6U Expired - Lifetime CN204060654U (en) | 2014-06-20 | 2014-06-20 | Large-displacement sand blower capable of returning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204060654U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073964A (en) * | 2021-03-11 | 2021-07-06 | 东营市兆鑫工贸有限责任公司 | Large-displacement backflow 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 |
-
2014
- 2014-06-20 CN CN201420332919.6U patent/CN204060654U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073964A (en) * | 2021-03-11 | 2021-07-06 | 东营市兆鑫工贸有限责任公司 | Large-displacement backflow 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201705275U (en) | Packer capable of flushing well | |
| CN104481484B (en) | Horizontal well in segments Intermittent cyclic steam stimulation note adopts integrated pipe column | |
| CN204703876U (en) | Bridge type concentric separate injection pipe column | |
| CN101942986A (en) | Abrasive jet injection multiple fracturing device | |
| CN108386160A (en) | Blockage removal type sand prevention pipe column structure capable of flushing lower sieve pipe of pump | |
| CN202325434U (en) | Closable balancing sieve tube for horizontal wells and closing tool for closable balancing sieve tube | |
| CN202755956U (en) | Quantitative water distributor free from throwing and fishing | |
| CN204060654U (en) | Large-displacement sand blower capable of returning | |
| CN202170789U (en) | Sliding sleeve adaptor | |
| CN202707018U (en) | Bridge type eccentric overflowing water distributor and blanking plug thereof | |
| CN103422846B (en) | Open hole horizontal well completion fracturing integrated pipe column | |
| CN202325323U (en) | underground operation tool integrated with sand washing, paraffin scraping, sealing and separating | |
| CN208777975U (en) | A kind of frac-sand jet | |
| CN202628052U (en) | Differential-pressure decomposition throttling water distributor | |
| CN201730603U (en) | Large-delivery capacity and large-sand capacity sand sprayer | |
| CN204024624U (en) | Multistage large-drift-diameter annular throttling sand blower | |
| CN204457757U (en) | Lamination pressure test system | |
| CN204040993U (en) | A kind of backwashing wells steel frame expanding water injecting packer | |
| CN103195403A (en) | Large sand quantity anti-pollution sand blower | |
| CN202467752U (en) | Stepwise deblocking packer | |
| CN201513154U (en) | Water distribution packer, setting core and water distribution core | |
| CN205089285U (en) | Prevent flowing backward control valve and layering and prevent flowing backward combination tubular column with adopting | |
| CN200985769Y (en) | Lifting oil layer switch | |
| CN204113216U (en) | Control valve seat for non-well killing operation of rod pump | |
| CN204113257U (en) | Small-diameter large-sand-amount sand blower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141231 |