CN205714078U - Coiled tubing drag fracturing packer - Google Patents
Coiled tubing drag fracturing packer Download PDFInfo
- Publication number
- CN205714078U CN205714078U CN201620549134.3U CN201620549134U CN205714078U CN 205714078 U CN205714078 U CN 205714078U CN 201620549134 U CN201620549134 U CN 201620549134U CN 205714078 U CN205714078 U CN 205714078U
- Authority
- CN
- China
- Prior art keywords
- mandrel
- packing element
- slips
- cone
- ring
- 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
Abstract
Coiled tubing drag fracturing packer, relates to horizontal well oil-gas field development pressing crack construction technical field.Including the top connection being sequentially connected with from the top down, inner spindle, packing element mandrel and slips mandrel, the bottom of top connection, inner spindle, packing element mandrel top between connect have fixed cover, it is provided with step on packing element mandrel below fixed cover, it is equipped with packing element and the most threaded rule ring and cone successively on packing element mandrel below step, slips mandrel, the mandrel below cone is set with slips assembly；Advise ring, between cone and slips mandrel, be provided with toroidal cavity, the slips mandrel in toroidal cavity is set with spring.This utility model adds a multi-functional high intensity compression spring between the spacing ring in cone and mandrel; overcome the upwards active force that during going into the well, rule ring is produced by borehole fluid with cone; make packing element be constantly in the state not being extruded, protect packing element.
Description
Technical field
This utility model relates to horizontal well oil-gas field development pressing crack construction technical field, specially coiled tubing drag fracturing
Packer.
Background technology
As it is shown on figure 3, the setting cone of traditional dragging packer is a spacing combination with rule ring.Make in reality
In industry, fashionable under packer, in well, liquid is transferred extruding by packer, and in well, liquid produces one to packer cone with rule ring
Thrust upwards.In this role, cone produces an extruding force upwards with rule ring to the packing element of packer.In squeezing action
Under, force packing element extrusion expansion, thus occur packing element, in the process of going into the well, the friction of packing element and casing wall occurs.Exist especially
API casing collar location produces serious scratching, and makes the packing element of packer occur damage and damage during going into the well.
Equally, in the pressing crack construction effect having gas or strata pressure compared with Gao Jing, occur through often after packer pressing crack construction
Packer can not unseal, and causes underground fracture instrument can not reach planned well section and take out working string, makes this working string not
Can construction.Construction delays, construction cost are caused to be greatly improved.
Cause the reason of this type of accident, in addition to pit shaft reason, mainly caused by the structure of packer.One, due to packing
Between device bottom mandrel and slips assembly, fit clearance is little, is easily generated the anti-chip of telling of down-hole sand or stratum and enters mandrel and slips assembly
Between, make slips assembly not replace and enter deblocking position.Even if mandrel is designed to totally-enclosed with slips assembly transposition structure,
Entering under packer, above carry or during setting deblocking, slips and mandrel produce back and forth movement, and the little pump of Ru Yitai is being inhaled or row.Make at this
Under with, slips assembly cannot avoid sand or chip to enter wherein as between mandrel, causes slips assembly cannot change with mandrel
Position.
Its two, the rule ring of packer, the fit clearance between cone and mandrel are little, once have sand or chip to enter, equally can
Occur that packing element is extruded and can not bounce back, cause packing element to block sleeve pipe.Put on repeating and put, cause packing element to damage
Bad.
Its three, after packer pressing crack construction, bottom it, counter to tell ratio more serious on stratum, or the work with certain gases at high pressure
Industry well, packer slip and packing element, under the effect of borehole fluid, sand or chip, have formed " block section " of certain length.On
The speed carrying operating tool string can not eliminate borehole fluid, " block section " that sand and chip etc. are formed.Slips is made not replace, packing
Device packing element can not bounce back.Make that construction is extremely difficult maybe can not be continued, above take replacing underground fracture instrument, cause this construction failure.
Utility model content
The purpose of this utility model is to provide a kind of coiled tubing drag fracturing packer, cone and the spacing ring on mandrel
Between add a multi-functional high intensity compression spring, and on mandrel, add one lead sand launder；Said structure improves
Be effectively protected packing element, it is to avoid the packing element occurred in construction go into the well during damage, solve pressing crack construction
The phenomenons such as rear packing element can not unseal.
The technical scheme realizing above-mentioned purpose is: coiled tubing drag fracturing packer, including being sequentially connected with from the top down
Top connection, inner spindle, packing element mandrel and slips mandrel, the bottom of top connection, inner spindle, packing element mandrel top between connect
It is connected to fixed cover, the packing element mandrel below fixed cover is provided with step, on packing element mandrel below step, slips mandrel successively
It is equipped with packing element and the most threaded rule ring and cone, the mandrel below cone is set with slips assembly；Its
It is characterised by: advise ring, between cone and slips mandrel, be provided with toroidal cavity, the slips mandrel in toroidal cavity is set with bullet
Spring, toroidal cavity superposed slips mandrel connects restraining position ring block, and the cone inwall of toroidal cavity lower surface is formed ring
Shape step, described spring is arranged between the ring-shaped step of spacing ring and toroidal cavity lower surface.
This utility model adds a multi-functional high intensity compression spring between the spacing ring in cone and mandrel,
Overcome the upwards active force that rule ring is produced by borehole fluid during going into the well with cone, make packing element be constantly in not by
The state of extruding, protects packing element.Secondly, under the effect of high-strength spring, rule ring, sand card between vertebral body and mandrel or rub
The phenomenons such as card, solve coordinating top circulation or squeezing to obtain improving.
Preferably, the mandrel between described cone and slips assembly is provided with cannelure as leading sand launder, leads sand launder and add
Big gap between slips assembly and mandrel, under the pushing of high-strength spring and the compression dual function of tubing string, can destroy
Borehole fluid, " block section " that sand and chip etc. are formed.Improve the reliability of fracturing packer construction operation, solve construction
This type of difficult problem occurred.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of mandrel；
Fig. 3 is the structural representation of prior art.
Detailed description of the invention
As shown in Figure 1, 2, this utility model includes being sequentially connected with from the top down top connection 1, inner spindle 2, packing element mandrel
3, slips mandrel 4, the bottom of top connection 1, inner spindle 2, packing element mandrel 3 top between connect have fixed cover 5, fixed cover 5 times
It is provided with step 6 on the packing element mandrel 3 of side, packing element mandrel 3 below step 6, slips mandrel 4 are equipped with packing element 7, phase successively
Rule ring 8 threaded between Hu and cone 9, the slips mandrel 4 below cone 9 is set with slips assembly 10, cone 9 and card
Being provided with cannelure 14 on slips mandrel 4 between watt assembly 10 as leading sand launder, the lower end of slips mandrel 4 connects has circle stifled
15。
Advise ring 8, between cone 9 and slips mandrel 4, be provided with toroidal cavity 13, the mandrel 4 in toroidal cavity 13 is set with
There is spring 11, toroidal cavity 13 superposed slips mandrel 4 connects restraining position ring block 12, the cone of toroidal cavity 13 lower surface
Forming ring-shaped step on 9 inwalls, spring 11 is arranged between the ring-shaped step of spacing ring 12 and toroidal cavity 13 lower surface.
Claims (2)
1. coiled tubing drag fracturing packer, including the top connection being sequentially connected with from the top down, inner spindle, packing element mandrel and
Slips mandrel, the bottom of top connection, inner spindle, packing element mandrel top between connect have fixed cover, the packing element below fixed cover
It is provided with step on mandrel, packing element mandrel below step, slips mandrel are equipped with packing element and screw thread each other successively
The rule ring connected and cone, the mandrel below cone is set with slips assembly；It is characterized in that: rule ring, cone and slips core
It is provided with toroidal cavity between axle, the slips mandrel in toroidal cavity is set with spring, the superposed slips of toroidal cavity
Connecting restraining position ring block on mandrel, the cone inwall of toroidal cavity lower surface is formed ring-shaped step, described spring is arranged on spacing
Between the ring-shaped step of ring and toroidal cavity lower surface.
Coiled tubing drag fracturing packer the most according to claim 1, it is characterised in that: described cone and slips assembly
Between mandrel on be provided with cannelure as leading sand launder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620549134.3U CN205714078U (en) | 2016-06-08 | 2016-06-08 | Coiled tubing drag fracturing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620549134.3U CN205714078U (en) | 2016-06-08 | 2016-06-08 | Coiled tubing drag fracturing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714078U true CN205714078U (en) | 2016-11-23 |
Family
ID=57302197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620549134.3U Active CN205714078U (en) | 2016-06-08 | 2016-06-08 | Coiled tubing drag fracturing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120109A (en) * | 2017-06-05 | 2017-09-01 | 中国石油天然气股份有限公司 | A kind of split-type sands-proof check casing collar locator (CCL) |
-
2016
- 2016-06-08 CN CN201620549134.3U patent/CN205714078U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120109A (en) * | 2017-06-05 | 2017-09-01 | 中国石油天然气股份有限公司 | A kind of split-type sands-proof check casing collar locator (CCL) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104929603B (en) | Sleeve pipe infinite stages staged fracturing method | |
| CN104213864B (en) | Protective device for packer rubber tube | |
| CN207554014U (en) | A kind of ball seat | |
| CN105484699A (en) | Drilling and milling-free bridge plug for fracturing | |
| CN105545246B (en) | A kind of recyclable packer of HTHP hydraulic pressure | |
| CN107558949A (en) | A kind of electric cable bridge plug setting tool | |
| CN105971557A (en) | Completely-dissolvable bridge plug | |
| CN205189821U (en) | Many bunches of unlimited level well cementation segmentation fracturing string | |
| CN205714078U (en) | Coiled tubing drag fracturing packer | |
| CN106639968A (en) | Multi-cluster infinite-order well cementation segmentation fracturing string and fracturing method | |
| CN102493777B (en) | Hydraulic release plugging device | |
| CN103470209B (en) | Reliable packer | |
| CN204113206U (en) | A kind of Self-expandable packer with compression protection mechanism | |
| CN104074487B (en) | Drawing type packer | |
| CN201092845Y (en) | Hydraulic pressure, double back-off hand type dragable bridge plug | |
| CN203808923U (en) | Suspension releasing packer for oil-gas water well | |
| CN203008808U (en) | Casing centralizer with variable diameter and rotational flow function | |
| CN104929576A (en) | Hydraulic-control dual-clack valve | |
| CN103122760B (en) | Completion pipe string for suspending bottom water coning | |
| CN201416429Y (en) | Sand blasting choke with sliding sleeve | |
| CN202338318U (en) | Separate-layer fracturing control device | |
| CN203756092U (en) | Pressurized expansion mechanism for expansion hanger | |
| CN204646153U (en) | Slicing and filling fixed tubular column anti-flushing well device | |
| CN104314510B (en) | Self-expanding packer with compression protection mechanism | |
| CN205477572U (en) | Coiled tubing underseal drags multilayer annular space fracturing instrument cluster |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |