CN110578507B - Reusable sand blower for fracturing stratum of oil field - Google Patents
Reusable sand blower for fracturing stratum of oil field Download PDFInfo
- Publication number
- CN110578507B CN110578507B CN201910882648.9A CN201910882648A CN110578507B CN 110578507 B CN110578507 B CN 110578507B CN 201910882648 A CN201910882648 A CN 201910882648A CN 110578507 B CN110578507 B CN 110578507B
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- groove
- fixedly connected
- valve seat
- sand
- 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
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
Abstract
The invention relates to the field of oilfield formation fracturing equipment, and discloses a reusable oilfield formation fracturing sand blaster which comprises a sand blaster pipe body, a sliding sleeve, linkage shafts, a valve core, a valve seat and sand blasting holes, wherein the sliding sleeve is movably sleeved at the top of an inner cavity of the sand blaster pipe body, a through groove is formed in the middle of the sliding sleeve, the diameter of the top of the through groove is gradually reduced from top to bottom, the bottom of the sliding sleeve is fixedly connected with the linkage shafts positioned on two sides of the through groove, and the bottom ends of the two linkage shafts are fixedly connected with the valve core. This repeatedly usable's oil field stratum fracturing sand blaster, through the design of the disk seat of the inside sliding sleeve of sand blaster body, case, at the during operation at every turn, utilize the throttling action that the fracturing fluid that flows through the sliding sleeve that flows through for the sliding sleeve moves down, and case contact disk seat blocks up, thereby carries out the fracturing, thereby the used repeatedly of being convenient for has improved the fracturing oil field level quantity of working at every turn, and then has improved work efficiency.
Description
Technical Field
The invention relates to the field of oilfield stratum fracturing equipment, in particular to a reusable oilfield stratum fracturing sand blaster.
Background
The sand blaster is a core tool of a layered fracturing pipe string in oil field exploitation engineering, and the action mechanism of the sand blaster is to pump fracturing fluid doped with chemical substances into an oil-gas layer, so that cracks are formed in the stratum, particles such as gravel are mixed into the fracturing fluid, and the particles support peak value cracks to be closed in the stratum cracks, so that the stratum permeability is improved, and oil and gas exploitation is facilitated.
Most of the existing fracturing sand blasters are multi-stage sliding sleeve type sand blasters, and the working principle is as follows (refer to fig. 5): go up the logical groove diameter of sliding sleeve 7 and be greater than the diameter of lower sliding sleeve all the time, when the layering fracturing step by step, through throwing in the metal ball, use fluid pressure to cut the shear pin of fixed sliding sleeve 7, sliding sleeve 7 falls and acts on the packer that the sandblast bottom is connected, opens sandblast hole 6 and carries out the sandblast, then promotes the sandblast ware to the fracturing layer that moves up, continues to put in the metal ball, accomplishes the fracturing work.
However, when the existing multistage sliding sleeve type sand blaster is used layer by layer, the diameter of the sliding sleeve is gradually reduced from top to bottom along with the increase of grading, the diameter of the shot is reduced, the number of the layers of the fracturing oil field is limited during each operation, and therefore the working efficiency is reduced.
Disclosure of Invention
The invention provides a reusable sand blaster for fracturing an oil field stratum, which has the advantages of reusability and low energy consumption and solves the technical problems in the background technology.
The invention provides the following technical scheme: a reusable sand blaster for fracturing stratum in oil field is composed of a sand blaster tube, a slide sleeve, a linking axle, a valve core, a valve seat and sand blasting holes, the sliding sleeve is movably sleeved on the top of the inner cavity of the tube body of the sand blasting machine, a through groove is arranged in the middle of the sliding sleeve, the diameter of the top of the through groove is gradually reduced from top to bottom, the bottom of the sliding sleeve is fixedly connected with linkage shafts positioned at two sides of the through groove, the bottom ends of the two linkage shafts are fixedly connected with valve cores, the valve seat is movably sleeved at the bottom of the inner cavity of the sand blasting machine tube body, the valve seat moves upwards along with the downward movement of the sliding sleeve, the valve seat is positioned above the valve core, the middle part of the valve seat is provided with a through groove, the diameter of the bottom of the through groove is gradually reduced from bottom to top, a sand blasting hole between the sliding sleeve and the valve seat is formed in the outer side of the sand blaster pipe body, and a limiting block located at the bottom of the sand blasting hole is arranged in the inner cavity of the sand blaster pipe body.
Preferably, the equal movable sleeve in inside of sliding sleeve both sides is equipped with upper seal cover, the epaxial axle that links of top fixedly connected with of upper seal cover, the top of the epaxial top that links extends to the outside and the fixedly connected with fixed block on sliding sleeve top, the top at sandblast tubular cavity is fixed to the fixed block, the top fixedly connected with extension spring of upper seal cover, this extension spring movable sleeve are epaxial even, and the top fixed connection of this extension spring and sliding sleeve inner chamber, the equal movable sleeve in inside of sliding sleeve both sides is equipped with the next seal cover that is located upper seal cover below, the next axle that links of bottom fixedly connected with of next seal cover, the next top fixed connection who links the bottom of axle and disk seat.
Preferably, the lower connecting shaft and the connecting shaft are distributed at the bottom of the sliding sleeve in a staggered manner.
Preferably, the outer diameter of the valve core is larger than the diameter of the through groove at the top of the valve seat, and the diameter of the through groove at the top of the valve seat is the same as that of the through groove at the bottom of the sliding sleeve.
The invention has the following beneficial effects:
according to the reusable oilfield stratum fracturing sand blower, through the design of the sliding sleeve and the valve seat of the valve core in the sand blower body, when the sand blower works each time, the upstream fracturing fluid flows through the throttling effect of the sliding sleeve to enable the sliding sleeve to move downwards, the valve core is in contact with the valve seat to plug, so that fracturing is performed, repeated use is facilitated, the number of the levels of a fractured oil field in each working is increased, the working efficiency is improved, when the sliding sleeve moves downwards, the upper sealing sleeve moves upwards relative to the sliding sleeve, the pressure between the upper sealing sleeve and the lower sealing sleeve is reduced, the lower sealing sleeve drives the valve seat to move upwards, the sealing effect is further improved, and the fracturing fluid is enabled to be sprayed out from a sand blasting port to act on an; and the pressure flow which is upward in the well is applied to the valve seat, so that the valve seat moves upwards and is matched with the limit of the limit block, the sealing effect is further improved, and the pressure fluid which is upward in the well is effectively overcome, so that the energy consumption of pumping pressure is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cut-away view of the middle portion of FIG. 1 in accordance with the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a top view of the sliding sleeve of the structure of FIG. 2 according to the present invention;
figure 5 is a schematic diagram of a prior art blowout preventer.
In the figure: 1. a sandblaster tube; 2. a sliding sleeve; 201. an upper sealing sleeve; 202. an upper connecting shaft; 203. a fixed block; 204. a lower sealing sleeve; 205. a lower connecting shaft; 3. a linkage shaft; 4. a valve core; 5. a valve seat; 6. sand blasting holes; 7. a sliding sleeve; 8. and (5) shearing the nails.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a reusable sand blaster for fracturing stratum in oil field comprises a sand blaster tube 1, a sliding sleeve 2, a coupling shaft 3, a valve core 4, a valve seat 5 and a sand blasting hole 6, wherein the sliding sleeve 2 is movably sleeved on the top of the inner cavity of the sand blaster tube 1, a through groove is formed in the middle of the sliding sleeve 2, the diameter of the top of the through groove is gradually reduced from top to bottom, an upper sealing sleeve 201 is movably sleeved inside each of two sides of the sliding sleeve 2, an upper coupling shaft 202 is fixedly connected to the top of the upper sealing sleeve 201, the top of the upper coupling shaft 202 extends to the outside of the top of the sliding sleeve 2 and is fixedly connected with a fixing block 203, the fixing block 203 is fixed on the top of the inner cavity of the sand blaster tube 1, a tension spring is fixedly connected to the top of the upper sealing sleeve 201, the tension spring is movably sleeved on the upper coupling shaft 202 and is fixedly connected to the top of the inner cavity of the, the bottom end of the lower sealing sleeve 204 is fixedly connected with a lower connecting shaft 205, the bottom end of the lower connecting shaft 205 is fixedly connected with the top of the valve seat 5, the bottom of the sliding sleeve 2 is fixedly connected with the linking shafts 3 positioned at two sides of the through groove, the bottom ends of the two linking shafts 3 are fixedly connected with the valve core 4, the valve seat 5 is movably sleeved at the bottom of the inner cavity of the sand ejector pipe body 1, the valve seat 5 moves upwards along with the downward movement of the sliding sleeve 2, in the fracturing working process, fracturing fluid pumped downwards flows through the through groove of the sliding sleeve 2, the sliding sleeve 2 moves downwards through the throttling principle, the linking shaft 3 fixed on the sliding sleeve 2 drives the valve core 4 to move downwards to plug the valve seat 5 to seal, the fracturing fluid is discharged from the sand blasting hole 6 to fracture an oil layer, meanwhile, as the sliding sleeve 2 moves downwards, the upper sealing sleeve 201 moves upwards relative to the sliding sleeve 2, the pressure between the upper sealing, so that the lower sealing sleeve 204 drives the valve seat 5 to move upwards to further improve the sealing effect, meanwhile, the downhole fluid acts on the valve seat 5 to move upwards, the better sealing is realized, the energy consumption for overcoming the upward pressure of the downhole fluid can be effectively reduced, the fracturing fluid is effectively ensured to be sprayed out from a sand blasting port to act on an oil layer, moreover, the pressure intensity between the upper sealing sleeve 201 and the lower sealing sleeve 204 is reduced, the valve seat moves upwards, the work done by a tension spring is overcome, the power consumption is reduced compared with a larger downhole fluid pressure gun, the valve seat 5 is positioned above the valve core 4, the middle part of the valve seat 5 is provided with a through groove, the diameter of the bottom of the through groove is gradually reduced from bottom to top, the sand blasting hole 6 positioned between the sliding sleeve 2 and the valve seat 5 is arranged on the outer side of the sand blaster pipe body 1, the inner cavity of the sand blaster pipe body 1 is provided with a limiting block, simultaneously the bottom of the 1 inner chamber of sand blaster body is equipped with and carries out spacing stopper to moving down of disk seat 5, and is spacing in the pit to disk seat 5, and the effectual reduction overcomes the consumption of the fluid pressure that makes progress in the pit.
The lower connecting shafts 205 and the connecting shafts 3 are distributed at the bottom of the sliding sleeve 2 in a staggered manner, the two lower connecting shafts 205 and the two connecting shafts 3 are distributed at the outer side of the through groove in a cross manner, and when the sliding sleeve 2 moves in the working process of the sand blaster, the lower connecting shafts 205 and the connecting shafts 3 are not interfered with each other.
Wherein, case 4's external diameter is greater than the diameter that 5 tops of disk seat led to the groove, and the diameter that 5 tops of disk seat led to the groove is the same with the diameter that 2 bottoms of sliding sleeve led to the groove, when fluid flows up under the pressure effect in the pit, through in disk seat 5 formation throttling action, can make disk seat 5 shift up, the fracturing fluid that cooperates the pump down simultaneously acts on the sliding sleeve, make case 4 move down, ensure that case 4 and disk seat 5 closely laminate in the below in sandblast hole, realize effectual sealed, fracturing fluid is carried out the fracturing to the oil reservoir by 6 blowout in sandblast hole.
When the fracturing fluid injection device is used, firstly, fracturing fluid is pumped into the top of the sand ejector pipe body 1, flows through the sliding sleeve 2, the sliding sleeve 2 moves downwards by utilizing the throttling principle, the valve core 4 is driven to move downwards to contact the valve seat 5 for sealing, the fracturing fluid is sprayed out of the sand blasting hole to perform fracturing work on the oil layer of the level, after the fracturing fluid is input, the valve core 4 is separated from the valve seat 5 under the action of the tension spring, the sand ejector pipe body 1 is lifted up to the lower fracturing layer, fracturing is performed according to the steps, and when the fluid is injected into the underground, the throttling action force of the fluid of the pump pressure on the sliding sleeve 2 is controlled to be smaller than the tension of the tension spring.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a repeatedly usable's oil field stratum fracturing sand blaster, includes sand blaster body (1), slip cap (2), trace axle (3), case (4), disk seat (5), sandblast hole (6), its characterized in that: the sliding sleeve (2) is movably sleeved at the top of the inner cavity of the sand blaster pipe body (1), a through groove is arranged in the middle of the sliding sleeve (2), the diameter of the top of the through groove is gradually reduced from top to bottom, the bottom of the sliding sleeve (2) is fixedly connected with linkage shafts (3) positioned at two sides of the through groove, the bottom ends of the two linkage shafts (3) are fixedly connected with valve cores (4), the valve seat (5) is movably sleeved at the bottom of the inner cavity of the sand blaster pipe body (1), the valve seat (5) moves upwards along with the downward movement of the sliding sleeve (2), the valve seat (5) is positioned above the valve core (4), the middle part of the valve seat (5) is provided with a through groove, the diameter of the bottom of the through groove is gradually reduced from bottom to top, a sand blasting hole (6) positioned between the sliding sleeve (2) and the valve seat (5) is arranged on the outer side of the sand blaster pipe body (1), the inner cavity of the sand blaster pipe body (1) is provided with a limiting block positioned at the bottom of the sand blasting hole (6);
the inner parts of the two sides of the sliding sleeve (2) are movably sleeved with upper sealing sleeves (201), the top of the upper sealing sleeve (201) is fixedly connected with an upper connecting shaft (202), the top end of the upper connecting shaft (202) extends to the outside of the top end of the sliding sleeve (2) and is fixedly connected with a fixing block (203), the fixed block (203) is fixed at the top of the inner cavity of the sand blaster pipe body (1), the top of the upper sealing sleeve (201) is fixedly connected with a tension spring, the tension spring is movably sleeved on the upper connecting shaft (202) and is fixedly connected with the top of the inner cavity of the sliding sleeve (2), the inner parts of the two sides of the sliding sleeve (2) are movably sleeved with a lower sealing sleeve (204) positioned below the upper sealing sleeve (201), the bottom end of the lower sealing sleeve (204) is fixedly connected with a lower connecting shaft (205), the bottom end of the lower connecting shaft (205) is fixedly connected with the top of the valve seat (5);
the lower connecting shaft (205) and the connecting shaft (3) are distributed at the bottom of the sliding sleeve (2) in a staggered manner.
2. The reusable oilfield formation fracturing sand blower of claim 1, wherein: the outer diameter of the valve core (4) is larger than the diameter of the through groove at the top of the valve seat (5), and the diameter of the through groove at the top of the valve seat (5) is the same as that of the through groove at the bottom of the sliding sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882648.9A CN110578507B (en) | 2019-09-18 | 2019-09-18 | Reusable sand blower for fracturing stratum of oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882648.9A CN110578507B (en) | 2019-09-18 | 2019-09-18 | Reusable sand blower for fracturing stratum of oil field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110578507A CN110578507A (en) | 2019-12-17 |
| CN110578507B true CN110578507B (en) | 2021-06-04 |
Family
ID=68812709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910882648.9A Active CN110578507B (en) | 2019-09-18 | 2019-09-18 | Reusable sand blower for fracturing stratum of oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110578507B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250673A (en) * | 2021-05-26 | 2021-08-13 | 王德根 | Separate-layer fracturing sand blower for oil exploitation |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100545416C (en) * | 2006-12-06 | 2009-09-30 | 西安通源石油科技股份有限公司 | Throwing type high energy gas fracturing device |
| CN103266875B (en) * | 2013-02-28 | 2015-12-02 | 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 | A kind of multi-stage water power sprays the fracture job method of fracturing strings |
| CN203686281U (en) * | 2014-01-17 | 2014-07-02 | 安徽金达利液压有限公司 | Ultrahigh-pressure water overflow valve |
| CN105422075B (en) * | 2014-08-26 | 2019-01-18 | 中国石油天然气股份有限公司 | Sanding machine |
| US10260313B2 (en) * | 2015-04-01 | 2019-04-16 | Weatherford Technology Holdings, Llc | Metal-to-metal sealing valve with managed flow erosion across sealing member |
| CN208123482U (en) * | 2018-04-17 | 2018-11-20 | 盐城市骊麟石油机械有限公司 | A kind of multi-function throttle valve |
| CN208416495U (en) * | 2018-07-04 | 2019-01-22 | 中国石油集团西部钻探工程有限公司 | Exempt from ball-throwing type underground multiple switching by-passing valve |
-
2019
- 2019-09-18 CN CN201910882648.9A patent/CN110578507B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110578507A (en) | 2019-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204060661U (en) | A kind of coiled tubing multistage fracturing tool tubing string | |
| CN104929603B (en) | Sleeve pipe infinite stages staged fracturing method | |
| CA2679495C (en) | Improved system and method for stimulating multiple production zones in a wellbore | |
| CN100562645C (en) | High pressure water jet-flow deep penetrating perforating and auxiliary crushing method and device thereof | |
| CN103306643B (en) | A kind of water drainage gas production device and method | |
| WO2016033983A1 (en) | Coiled tubing fracturing multistage tool string and utilization method | |
| CN105484695A (en) | Mechanical hydraulic double-acting expansion device suitable for expansion tube drilling | |
| CN106014346A (en) | Drainage and gas production method and device through velocity string in cooperation with plunger airlift | |
| CN103867177A (en) | Horizontal well fracturing method | |
| CN105484719A (en) | Method for improving multi-cluster crack initiation effectiveness by blocking seams through multi-scale soluble balls | |
| CN108952662B (en) | Large-span well staged hydraulic impact fracturing string and implementation method thereof | |
| CN109798097B (en) | Unlimited-use fracturing sand blower | |
| CN103573241A (en) | Casing cementing pressure balancing sliding sleeve annulus staged sand fracturing process for horizontal well | |
| CN112065354A (en) | Modification process of perforation fracturing structure under offshore loose sandstone sieve tube well completion mode | |
| CN112814640A (en) | Multi-layer under-pressure fracturing operation device for medium-low pressure well and application method | |
| CN103912257B (en) | A kind of dragging multiple fracturing device with pressure | |
| CN110578507B (en) | Reusable sand blower for fracturing stratum of oil field | |
| CN106593387B (en) | A method of realizing the more cluster pressure breaks of horizontal well in segments | |
| CN109707358A (en) | Fracturing string and its fracturing process | |
| CN204252929U (en) | Oil recovery water plugging string | |
| CN104863550B (en) | Hydraulic jet perforation and APR testing combination operation technique | |
| CN112267864A (en) | Repeated fracturing device and method for large-displacement horizontal well | |
| CN205382907U (en) | Two effect expansion devices of machinery hydraulic pressure suitable for expansion pipe well drilling | |
| CN115822530A (en) | Long horizontal section under-pressure drill rod transmission well-flushing and perforation integrated tool and method | |
| CN205297515U (en) | Coiled tubing drags hydraulic jet fracturing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210517 Address after: 163000 Business Service Center A Business Service 2717, Olin International Apartment Business District G, Jeanhu Road District, Daqing City, Heilongjiang Province Applicant after: DAQING HONGBO SHENGDA PETROLEUM MACHINERY EQUIPMENT Co.,Ltd. Address before: 056000 No.51, Sanju village, 2672 worker's village, Fuxing District, Handan City, Hebei Province Applicant before: Cao Yongquan |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210927 Address after: 163000 room 503, No.2 Kaiyuan street, Daqing economic and Technological Development Zone, Ranghulu District, Daqing City, Heilongjiang Province Patentee after: Daqing Naigu Petroleum Machinery Equipment Manufacturing Co.,Ltd. Address before: 163000 Business Service Center A Business Service 2717, Olin International Apartment Business District G, Jeanhu Road District, Daqing City, Heilongjiang Province Patentee before: DAQING HONGBO SHENGDA PETROLEUM MACHINERY EQUIPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |