CN110017121A - A kind of large span perforated interval single multilayer gravel pack tools - Google Patents
A kind of large span perforated interval single multilayer gravel pack tools Download PDFInfo
- Publication number
- CN110017121A CN110017121A CN201910310247.6A CN201910310247A CN110017121A CN 110017121 A CN110017121 A CN 110017121A CN 201910310247 A CN201910310247 A CN 201910310247A CN 110017121 A CN110017121 A CN 110017121A
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- China
- Prior art keywords
- pipeline section
- operation pipeline
- sealed
- sealing drum
- tube
- Prior art date
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of wells
-
- 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
- E21B43/14—Obtaining from a multiple-zone well
-
- 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
Abstract
The invention discloses a kind of large span perforated interval single multilayer gravel pack tools, including passing through the service tube-column of the outer layer tubing string and tripping in of entire perforated interval in outer layer tubing string, outer layer tubing string includes the sump packer set gradually from bottom to up, the outer layer tubing string main part for being inserted in sump packer top and the top packer assembly connecting with outer layer tubing string main part；The main part of outer layer tubing string includes bottom operation pipeline section, middle part operation pipeline section and sand control section；Sand control section, middle part operation pipeline section and bottom operation pipeline section are equipped with sand control screen corresponding with corresponding perforation layer and its internal layer bushing pipe, are formed with annular space between internal layer bushing pipe and sand control screen, production cycle sliding sleeve is connected on internal layer bushing pipe；Service tube-column mainly uses single layer structure, and the present invention can be used for the filling fracturing sand control operation of large span perforated interval single multilayer gravel, and does not need the complete well flow string in tripping in lower part and separate zone production can be realized.
Description
Technical field
The present invention relates to oil exploitation well sand control technique field, especially a kind of large span perforated interval single multilayer gravel fills
Fill out tool.
Background technique
For loose sand producing well, in recovery process, during production fluid flows into pit shaft, formation sand can be carried
Into in pit shaft, electric pump and production equipment are endangered.To prevent sand production, independent screen sand control or gravel is commonly used
Filling anti-sand.
For part producing well while sand control, it is desirable to be able to which the fracturing work for carrying out certain scale reaches foundation ground
Layer crack increases the purpose of stratum output, generally same with sand control gravel packing job for loose sand well fracturing work at present
Shi Jinhang.
In existing gravel filling sand prevention or gravel filling fracturing sand control for cased well, multiple single layer gravel is generally used
Stone fills, the mode of a multiple gravel pack carries out multiple gravel pack.One time multiple gravel pack technique is able to solve one
It plows and completes the problem of needing the multilayer pay interval gravel filling sand prevention of separate zone production, improve operating efficiency.But it is limited to take
Business two layers of pipe lamps structure of tubing string, liquid frictional resistance is larger, is unable to complete the operation of central tube overlength.And need tripping in lower part production pipe
Column is realized to divide and be adopted.
Summary of the invention
The present invention is to solve technical problem present in well-known technique and provide a kind of large span perforated interval single multilayer gravel
Stone packing tool, which can be used for the filling fracturing sand control operation of large span perforated interval single multilayer gravel, and not need down
Entering the complete well flow string in lower part can be realized separate zone production.
The technical scheme adopted by the present invention to solve the technical problems existing in the known art is that a kind of large span perforation
Section single multilayer gravel pack tools, the large span perforated interval are equipped with a top perforation layer, zero to multiple middle part perforation layers
With a bottom perforations layer, which includes the outer layer tubing string for passing through entire perforated interval and tripping in the outer layer
Service tube-column in tubing string, the outer layer tubing string include the sump packer set gradually from bottom to up, are inserted in the sand setting
The outer layer tubing string main part on packer top and the top packer assembly being connect with the outer layer tubing string main part；Institute
It states top packer assembly and includes sequentially connected top packer from top to bottom, top core sealing drum, filling sliding sleeve, lower part
Core sealing drum and display fixing seal cylinder；The main part of the outer layer tubing string includes that bottom corresponding with bottom perforations layer is made
The industry pipeline section and one-to-one middle part operation pipeline section of all middle part perforation layers and sand control section corresponding with top perforation layer；Institute
State sand control section, the middle part operation pipeline section and the bottom operation pipeline section be equipped with sand control screen corresponding with corresponding perforation layer and
Its internal layer bushing pipe is formed with annular space between the internal layer bushing pipe and the sand control screen, connects on the internal layer bushing pipe
It is connected to production cycle sliding sleeve；The sand control section, the middle part operation pipeline section and bottom operation pipeline section screen casing upper end are all connected with
There is a blind pipe；The middle part operation pipeline section and the bottom operation pipeline section blind pipe upper end are equipped with sequentially connected display from bottom to up
Fixing seal cylinder, lower core sealing drum, filling sliding sleeve and top core sealing drum, isolation packer and lower part are tested and are sealed
Cylinder, the display fixing seal cylinder are connect with the upper end of the blind pipe；In the middle part operation pipeline section and the top working pipe
The top that the internal layer bushing pipe of section is equipped with above the production cycle sliding sleeve, which is tested, is sealed sealed tube；The blind pipe of the sand control section with
The display fixing seal cylinder of the top packer assembly connects；The lower end of the bottom operation pipeline section, which is equipped with, inserts admittedly described heavy
The anchoring insertion seal on sand packer top；The service tube-column is equipped with sequentially connected tripping in washing pipe, stower from top to bottom
Tool, sliding sleeve operational instrument, matches long washing pipe and bottom isolated tube at loading indicator；It is equipped with and draws in the bottom of the bottom isolated tube
Shoes, the inside of the bottom isolated tube be equipped with bottom be isolated ball-and-seat, the top of the bottom isolated tube be equipped with bottom every
From circulation port, the bottom isolating seal mould being mounted on the bottom isolated tube is equipped in the lower section in bottom isolation cycle hole
Block I and bottom isolating seal module II, the bottom isolating seal module I bottom isolating seal module II is close to described
Bottom isolation cycle hole；The packing tool is equipped with sequentially connected direct circulation pipe nipple, filling bypass short joint and anti-from top to bottom
Circulating sub is equipped with ball-and-seat in the bottom of the reverse circulating sub, reversing port is equipped on the reverse circulating sub, in institute
It states and hydraulic positioner, seal modules III, seal modules IV is installed on reverse circulating sub, the reversing port, the sealed mould
Block III and the seal modules IV are respectively positioned on the top of the hydraulic positioner, the seal modules III and the seal modules IV
It is located at the two sides up and down of the reversing port；The filling bypass short joint and the direct circulation pipe nipple are all made of the double-deck knot
Structure is equipped with annular space, and the annular space of the direct circulation pipe nipple is connected by the annular space and the reverse circulating sub of the filling bypass short joint
It connects, bypass pack hole is equipped on the filling bypass short joint；Seal modules I and sealing are installed on the direct circulation pipe nipple
Module II is equipped with the circulation port being connected to direct circulation pipe nipple annular space, the circulation hole location on the outer wall of the direct circulation pipe nipple
In the top of the seal modules I and the seal modules II；During carrying out sand control operation to bottom perforations layer, set
When, the lower part on seal modules II and the bottom operation pipeline section in the service tube-column, which is tested, to be sealed sealed tube cooperation and seals, institute
The top core sealing drum cooperation stated on seal modules III and the bottom operation pipeline section in service tube-column seals, the filling
Hole is located at the lower part on the bottom operation pipeline section and tests the top core sealing drum being sealed on sealed tube and the bottom operation pipeline section
Between, building bottom operation pipeline section isolation packer sets channel；When testing envelope, seal modules II in the service tube-column with
Top on the bottom operation pipeline section, which is tested, is sealed sealed tube cooperation sealing, seal modules III and the bottom in the service tube-column
Lower part on portion's operation pipeline section, which is tested, is sealed sealed tube cooperation sealing, and the top that the pack hole is located on the bottom operation pipeline section is tested
The lower part being sealed in sealed tube and the bottom operation pipeline section, which is tested, to be sealed between sealed tube, building bottom operation pipeline section isolation packer
It tests envelope and enters channel；When filling pressure break, the hydraulic positioner is located at the display fixing seal on the bottom operation pipeline section
On cylinder, the two is tightly connected, and the seal modules II in the service tube-column and the top core on the bottom operation pipeline section are close
Sealed tube cooperation seals, and the seal modules III in the service tube-column are matched with the lower core sealing drum on the bottom operation pipeline section
Sealing is closed, the pack hole is located on the top core sealing drum and the bottom operation pipeline section on the bottom operation pipeline section
Between lower core sealing drum, the reversing port is located at the lower section of the lower core sealing drum of the bottom operation pipeline section, structure
Build direct circulation channel；When reacting cycle cleans, on the seal modules IV and the bottom operation pipeline section in the service tube-column under
Core sealing drum cooperation in portion's seals, the top core on seal modules II and the bottom operation pipeline section in the service tube-column
Sealing drum cooperation sealing, the pack hole and the reversing port are located at the top core sealing drum on the bottom operation pipeline section
Between the lower core sealing drum on the bottom operation pipeline section, reacting cycle flushing channel is constructed；To middle part perforation layer into
During row sand control operates, when setting, on seal modules II in the service tube-column and the middle part operation pipeline section in
Portion, which tests, is sealed sealed tube cooperation sealing, the top core on seal modules III and the middle part operation pipeline section in the service tube-column
Sealing drum cooperation sealing, the pack hole, which is located to test in the middle part of the middle part operation pipeline section, is sealed sealed tube and the middle part working pipe
Between the top core sealing drum of section, construct the isolation packer of the middle part operation pipeline section sets channel；It is described when testing envelope
The top on seal modules II and the middle part operation pipeline section in service tube-column, which is tested, is sealed sealed tube cooperation sealing, the service pipe
The lower part on seal modules III and the middle part operation pipeline section on column, which is tested, is sealed sealed tube cooperation sealing, and the pack hole is located at institute
The top for stating middle part operation pipeline section, which is tested, to be sealed the lower part of sealed tube and the middle part operation pipeline section and tests and be sealed between sealed tube, described in building
The envelope of testing of the isolation packer of middle part operation pipeline section enters channel, the bottom isolating seal module II in the service tube-column with should
Lower part adjacent thereto, which is tested, under operation pipeline section is sealed sealed tube cooperation sealing, returns channel in the isolation of building bottom；When filling pressure break, institute
It states hydraulic positioner to be located on the display fixing seal cylinder of the middle part operation pipeline section, the two is tightly connected, the service pipe
The top core sealing drum on seal modules II and the middle part operation pipeline section on column, which cooperates, to be sealed, in the service tube-column
Lower core sealing drum on seal modules III and the middle part operation pipeline section, which cooperates, to be sealed, and the pack hole is located at the middle part
Between the top core sealing drum of operation pipeline section and the lower core sealing drum of the middle part operation pipeline section, the reacting cycle hole location
In the lower section of the lower core sealing drum of the middle part operation pipeline section, direct circulation channel, the bottom in the service tube-column are constructed
Lower part adjacent thereto, which is tested, under isolating seal module I and the operation pipeline section is sealed sealed tube cooperation sealing, returns in the isolation of building bottom
Channel；When reacting cycle cleans, the seal modules IV in the service tube-column and the lower core on the middle part operation pipeline section are close
Sealed tube cooperation seals, and the seal modules II in the service tube-column are matched with the top core sealing drum on the middle part operation pipeline section
Close sealing, the pack hole and the reversing port be located at the middle part operation pipeline section top core sealing drum and the middle part
Between the lower core sealing drum of operation pipeline section, reacting cycle flushing channel is constructed；Sand control operation is being carried out to top perforation layer
In the process, when filling pressure break, the hydraulic positioner is located on the display fixing seal cylinder of the top packer assembly, and two
Person is tightly connected, and the seal modules II in the service tube-column are matched with the top core sealing drum on the top packer assembly
Sealing is closed, the seal modules III in the service tube-column and the lower core sealing drum cooperation on the top packer assembly are close
Envelope, the pack hole are located at the top core sealing drum of the top packer assembly and the lower part of the top packer assembly
Between core sealing drum, the reversing port is located at the lower section of the lower core sealing drum of the top packer assembly, building
Direct circulation channel, envelope is tested in lower part adjacent thereto under the bottom isolating seal module I and the sand control section in the service tube-column
Sealing drum cooperation sealing, building bottom, which is isolated, returns channel；When reacting cycle cleans, seal modules IV in the service tube-column with
The lower core sealing drum of the top packer assembly cooperates sealing, seal modules II and the top in the service tube-column
The top core sealing drum of portion's packer assembly cooperates sealing, and the pack hole and the reversing port are located at top packing
Between the top core sealing drum of device assembly and the lower core sealing drum of the top packer assembly, building reacting cycle cleaning
Channel.
The sliding sleeve operational instrument includes sequentially connected sliding bush closing tool, sliding sleeve switch instrument, sliding sleeve from top to bottom
Opening tool.
One or more described production cycle sliding sleeve is equipped on each internal layer bushing pipe.
It is left-handed sealing drum that sealed tube is tested in the lower part.
The advantages and positive effects of the present invention are: can be applied to compared to existing single multilayer gravel pack tools
The longer multilayer of large span, perforation length fills cased well.The accumulative construction length of existing single multilayer gravel pack tools by
It is limited to the large span perforated interval (9-5/ that liquid frictional resistance (stowing operation and inverse circular sand washing adapter frictional resistance) can not be performed more than certain length
8 " cased well single multilayer filling system center length of tube are usually no more than 350 meters, in 7 " cased well single multilayer filling systems
Heart length of tube is usually no more than 150 meters).The present invention can significantly reduce multiple gravel pack system liquid circulation frictional resistance, in turn
The accumulative construction length of single multilayer gravel pack tools can be increased up to 9-5/8 " cased well single multilayer filling system central tube
Length is more than 600 meters, and 7 " cased well single multilayer filling system center length of tube are more than 300 meters, can be applied to large span perforation
Section single multilayer gravel fills fracturing sand control operation.In addition, not needing the (production of the complete well flow string in tripping in lower part using the present invention
Sliding sleeve, insertion sealing etc.) separate zone production can be realized.
Detailed description of the invention
Fig. 1 is outer layer tubing string schematic diagram of the invention；
Fig. 2 is service tube-column schematic diagram of the invention；
Fig. 3 is to use set packer flow chart of the present invention；
Fig. 4 is to test sealed packer flow chart using the present invention；
Fig. 5 is to fill pressure break flow chart using direct circulation of the present invention；
Fig. 6 is to use inverse circular sand washing adapter flow chart of the present invention；
Fig. 7 is to use flow sheet of the present invention.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached drawing
Detailed description are as follows:
Please refer to FIG. 1 to FIG. 7, a kind of large span perforated interval single multilayer gravel pack tools, the large span perforated interval
Equipped with a top perforation layer, zero to multiple middle part perforation layers and a bottom perforations layer, which includes passing through
Service tube-column of the outer layer tubing string and tripping in of entire perforated interval in the outer layer tubing string.
The outer layer tubing string includes the sump packer 16 set gradually from bottom to up, is inserted in the sump packer 16
The outer layer tubing string main part on top and the top packer assembly being connect with the outer layer tubing string main part.
The top packer assembly include from top to bottom sequentially connected top packer 1, top core sealing drum 7,
Fill sliding sleeve 8, lower core sealing drum 9 and display fixing seal cylinder 10.
The main part of the outer layer tubing string includes bottom operation pipeline section corresponding with bottom perforations layer, penetrates with all middle parts
The one-to-one middle part operation pipeline section of aperture layer and sand control section corresponding with top perforation layer.
The sand control section, the middle part operation pipeline section and the bottom operation pipeline section are equipped with corresponding with corresponding perforation layer 3
Sand control screen 13 and its internal layer bushing pipe 12, annular sky is formed between the internal layer bushing pipe 12 and the sand control screen 13
Between, production cycle sliding sleeve 14 is connected on the internal layer bushing pipe 12.
The sand control section, the middle part operation pipeline section and 13 upper end of bottom operation pipeline section screen casing are respectively connected with a blind pipe
11。
The middle part operation pipeline section and 11 upper end of bottom operation pipeline section blind pipe are equipped with sequentially connected from bottom to up aobvious
Show that fixing seal cylinder 10, lower core sealing drum 9, filling sliding sleeve 8 and top core sealing drum 7, isolation packer 6 and lower part are tested
It is sealed sealed tube 5, the display fixing seal cylinder 10 is connect with the upper end of the blind pipe 11, in the present embodiment, for the ease of behaviour
Make, the lower part tests sealed tube 5 and uses left-handed sealing drum.
It is equipped on the internal layer bushing pipe 12 of the middle part operation pipeline section and the top operation pipeline section and is followed positioned at the production
The top of 14 top of ring sliding sleeve, which is tested, is sealed sealed tube 4.
The blind pipe 11 of the sand control section is connect with the display fixing seal cylinder 10 of the top packer assembly.
The lower end of the bottom operation pipeline section, which is equipped with, inserts the solid anchoring insertion seal 15 on 16 top of sump packer.
The service tube-column be equipped with from top to bottom sequentially connected tripping in washing pipe 17, packing tool 19, loading indicator 27,
Sliding sleeve operational instrument matches long washing pipe and bottom isolated tube, in the present embodiment in order to easy to operate, the sliding sleeve operational instrument packet
Include sequentially connected sliding bush closing tool 28, sliding sleeve switch instrument 29, sliding sleeve opening tool 30 from top to bottom.
It is equipped with guide shoe 34 in the bottom of the bottom isolated tube, it is single to be equipped with bottom isolation in the inside of the bottom isolated tube
Valve 33 is flowed, bottom isolation cycle hole 31 is equipped on the top of the bottom isolated tube, under bottom isolation cycle hole 31
Side is equipped with II 32-2 of bottom isolating seal module I 32-1 and bottom isolating seal module being mounted on the bottom isolated tube,
The bottom isolating seal module I 32-1 is compared with II 32-2 of bottom isolating seal module close to bottom isolation cycle hole 31.
The packing tool 19 is equipped with sequentially connected direct circulation pipe nipple 18, filling bypass short joint 22 from top to bottom and counter follows
Ring pipe nipple.
It is equipped with ball-and-seat 26 in the bottom of the reverse circulating sub, reversing port 24 is equipped on the reverse circulating sub,
Hydraulic positioner 25, III 21-3 of seal modules, IV 21-4 of seal modules, the reacting cycle are installed on the reverse circulating sub
Hole 24, III 21-3 of the seal modules and IV 21-4 of the seal modules are respectively positioned on the top of the hydraulic positioner 25, described
III 21-3 of seal modules and IV 21-4 of the seal modules is located at the two sides up and down of the reversing port 24.
The filling bypass short joint 22 and the direct circulation pipe nipple are all made of double-layer structure, are equipped with annular space, the direct circulation
The annular space of pipe nipple 18 is connect by the annular space of the filling bypass short joint 22 with the reverse circulating sub, is bypassed in the filling short
Section 22 is equipped with bypass pack hole 23.
II 21-2 of I 21-1 of seal modules and seal modules is installed on the direct circulation pipe nipple 18, in the direct circulation
The outer wall of pipe nipple 18 is equipped with the circulation port 20 being connected to direct circulation pipe nipple annular space, and the circulation port 20 is located at the seal modules
The top of II 21-2 of I 21-1 and the seal modules.
Seal modules II during carrying out sand control operation to bottom perforations layer, when setting, in the service tube-column
Lower part on 21-2 and the bottom operation pipeline section, which is tested, is sealed the cooperation sealing of sealed tube 5, the seal modules III in the service tube-column
Top core sealing drum 7 on 21-3 and the bottom operation pipeline section, which cooperates, to be sealed, and the pack hole 23 is located at bottom work
Lower part on industry pipeline section is tested between the top core sealing drum 7 being sealed in sealed tube 5 and the bottom operation pipeline section, and building bottom is made
Industry pipeline section isolation packer sets channel；I 21-2 of seal modules and the bottom operation when testing envelope, in the service tube-column
Top on pipeline section, which is tested, is sealed the cooperation sealing of sealed tube 4, II 21-3 of seal modules and the bottom operation in the service tube-column
Lower part on pipeline section, which is tested, is sealed the cooperation sealing of sealed tube 5, and envelope is tested on the top that the pack hole 23 is located on the bottom operation pipeline section
Lower part on sealing drum 4 and the bottom operation pipeline section, which is tested, to be sealed between sealed tube 5, and bottom operation pipeline section isolation packer 6 is constructed
Test envelope enter channel；When filling pressure break, the display that the hydraulic positioner 25 is located on the bottom operation pipeline section is fixed
On sealing drum 10, the two is tightly connected, on II 21-2 of seal modules and the bottom operation pipeline section in the service tube-column
The cooperation of top core sealing drum 7 seals, on III 21-3 of seal modules and the bottom operation pipeline section in the service tube-column
The cooperation sealing of lower core sealing drum 9, the pack hole 23 are located at 7 He of top core sealing drum on the bottom operation pipeline section
Between lower core sealing drum 9 on the bottom operation pipeline section, the reversing port 24 is located at the bottom operation pipeline section
The lower section of lower core sealing drum 9 constructs direct circulation channel；Seal modules IV when reacting cycle cleans, in the service tube-column
Lower core sealing drum 9 on 21-4 and the bottom operation pipeline section, which cooperates, to be sealed, the seal modules II in the service tube-column
Top core sealing drum 7 on 21-2 and the bottom operation pipeline section, which cooperates, to be sealed, the pack hole 23 and the reversing port
24 are located at the lower core sealing drum on top core sealing drum 7 and the bottom operation pipeline section on the bottom operation pipeline section
Between 9, reacting cycle flushing channel is constructed.
Seal modules II during carrying out sand control operation to middle part perforation layer, when setting, in the service tube-column
Middle part on 21-2 and the middle part operation pipeline section, which is tested, is sealed the cooperation sealing of sealed tube 5, the seal modules III in the service tube-column
Top core sealing drum 7 on 21-3 and the middle part operation pipeline section, which cooperates, to be sealed, and the pack hole 23 is located at middle part work
It tests and is sealed between sealed tube 5 and the top core sealing drum 7 of the middle part operation pipeline section in the middle part of industry pipeline section, construct the middle part and make
The isolation packer 6 of industry pipeline section sets channel；I 21-2 of seal modules and the middle part when testing envelope, in the service tube-column
Top on operation pipeline section, which is tested, is sealed the cooperation sealing of sealed tube 4, II 21-3 of seal modules and the middle part in the service tube-column
Lower part on operation pipeline section, which is tested, is sealed the cooperation sealing of sealed tube 5, and the top that the pack hole 23 is located at the middle part operation pipeline section is tested
The lower part for being sealed sealed tube 4 and the middle part operation pipeline section, which is tested, to be sealed between sealed tube 5, and the isolation envelope of the middle part operation pipeline section is constructed
Enter channel every the envelope of testing of device 6, under II 32-2 of bottom isolating seal module and the operation pipeline section in the service tube-column with its
Adjacent lower part, which is tested, is sealed the cooperation sealing of sealed tube 5, returns channel in the isolation of building bottom；When filling pressure break, the hydraulic positioner
25 are located on the display fixing seal cylinder 10 of the middle part operation pipeline section, and the two is tightly connected, close in the service tube-column
The top core sealing drum 7 sealed on II 21-2 of module and the middle part operation pipeline section, which cooperates, to be sealed, close in the service tube-column
The lower core sealing drum 9 sealed on III 21-3 of module and the middle part operation pipeline section, which cooperates, to be sealed, and the pack hole 23 is located at institute
It states between the top core sealing drum 7 of middle part operation pipeline section and the lower core sealing drum 9 of the middle part operation pipeline section, it is described anti-
Circulation port 24 is located at the lower section of the lower core sealing drum 9 of the middle part operation pipeline section, constructs direct circulation channel, the service pipe
Lower part adjacent thereto, which is tested, under bottom isolating seal module I 32-1 and the operation pipeline section on column is sealed the cooperation sealing of sealed tube 5, structure
It builds in the isolation of bottom and returns channel；IV 21-4 of seal modules and the middle part operation when reacting cycle cleans, in the service tube-column
Lower core sealing drum 9 on pipeline section cooperates sealing, II 21-2 of seal modules and the middle part operation in the service tube-column
Top core sealing drum 7 on pipeline section cooperates sealing, and the pack hole 23 and the reversing port 24 are located at the middle part operation
Between the top core sealing drum 7 of pipeline section and the lower core sealing drum 9 of the middle part operation pipeline section, building reacting cycle cleaning is logical
Road.
During carrying out sand control operation to top perforation layer, when filling pressure break, the hydraulic positioner 25 is located at
On the display fixing seal cylinder 10 of the top packer assembly, the two is tightly connected, the seal modules in the service tube-column
Top core sealing drum 7 on II 21-2 and the top packer assembly, which cooperates, to be sealed, the sealed mould in the service tube-column
Lower core sealing drum 9 on III 21-3 of block and the top packer assembly, which cooperates, to be sealed, and the pack hole 23 is located at described
It is described between the top core sealing drum 7 of top packer assembly and the lower core sealing drum 9 of the top packer assembly
Reversing port 24 is located at the lower section of the lower core sealing drum 9 of the top packer assembly, constructs direct circulation channel, the clothes
Business tubing string on bottom isolating seal module I 32-1 tested with lower part adjacent thereto under the sand control section be sealed sealed tube 5 cooperate it is close
Envelope, building bottom, which is isolated, returns channel；IV 21-4 of seal modules and the top when reacting cycle cleans, in the service tube-column
The lower core sealing drum 9 of packer assembly cooperates sealing, II 21-2 of seal modules and the top in the service tube-column
The top core sealing drum 7 of packer assembly cooperates sealing, and the pack hole 23 and the reversing port 24 are located at the top
Between the top core sealing drum 7 of packer assembly and the lower core sealing drum 9 of the top packer assembly, counter follow is constructed
Ring flushing channel.
In application, successively carrying out sand control operation from bottom to up
1) sand control operation is carried out to bottom perforations layer
The fill tool that being operated first service tube-column makes thereon is located at the top of bottom operation pipeline section, then according to following step
Suddenly it is operated:
1.1) it sets
Implement setting for bottom operation pipeline section isolation packer 6 by pressurizeing in drilling rod.
1.2) envelope is tested
Service tube-column is above proposed, the envelope of testing of building bottom operation pipeline section isolation packer 6 enters channel, then by drilling rod
Pressurization implementation bottom operation pipeline section isolation packer 6 tests envelope.
1.3) pressure break is filled
Service tube-column is transferred, direct circulation channel is constructed；Then by filling packing fluid in drilling rod, packing fluid carries haydite warp
Tripping in washing pipe 17 is entered in the sand control section on the outside of screen casing by pack hole 23 and filling sliding sleeve 8, and haydite is filled with stratum, sand fallout
Load fluid afterwards enters the bottom isolated tube of service tube-column through production cycle sliding sleeve 14 and bottom isolation cycle hole 31, above passes through and follows
The annular space that annular distance 20 enters between service tube-column and outer layer tubing string returns out well head.
1.4) reacting cycle cleans
Service tube-column is above proposed, reacting cycle flushing channel is constructed, then passes through the annular space reacting cycle completion fluid of outer layer tubing string, it will
Residual haydite inside service tube-column is cleaned to well head.
So far, the sand control treatment of bottom perforations layer just completes.
2) sand control operation is carried out to middle part perforation layer
The fill tool that above proposing service tube-column first makes thereon is located at the top of middle part operation pipeline section, then according to following step
Suddenly it is operated:
2.1) it sets
Operation is carried out according to step 1.1).
2.2) envelope is tested
Envelope, which is tested, first, in accordance with step 1.2) building enters channel, meanwhile, channel is returned in the isolation of building bottom；Then according to step
It is rapid 1.2) to implement to test envelope operation.
2.3) pressure break is filled
Envelope, which is tested, first, in accordance with step 1.3) building enters direct circulation channel, meanwhile, channel is returned in the isolation of building bottom；Then
Implement filling fracturing work according to step 1.3).
2.4) reacting cycle cleans
Operation is carried out according to step 1.4)；
So far, the sand control treatment of the middle part perforation layer adjacent with bottom perforations layer just completes.If middle part perforation layer is not
Only one layer, then step 3.2) should be repeated, until completing the sand control treatment of all middle part perforation layers.
3) sand control operation is carried out to top perforation layer
The fill tool that above proposing service tube-column first makes thereon be located at sand control section top and the top packer assembly
It is interior, then follow the steps below operation:
3.1) pressure break is filled
Operation is carried out according to step 3.2.3).
3.2) reacting cycle cleans
Operation is carried out according to step 3.2.4).
So far the sand control treatment of entire large span perforated interval is just fully completed.
4) service tube-column is proposed into casing 1, oil recovery production can be carried out.
After the sand control treatment for completing every layer of perforation layer, that is, after reacting cycle cleaning terminates, it is also necessary to which verifying is filled
Matrix amount, verifying sliding sleeve, same as the prior art, details are not described herein.Unlike the prior art: can be according to production need
It wants, the open and-shut mode of production cycle sliding sleeve 14 is controlled by operation service tube-column.In the case where the layer is not required to oil recovery, need to grasp
Production cycle sliding sleeve 14 is closed as service tube-column, otherwise, production cycle sliding sleeve 14 should be made to be kept open.
In the present invention, screen casing 13, internal layer bushing pipe 12 and production cycle sliding sleeve 14 form two-layer pipe, and outer layer tubing string is forever
It is long placed in in well.Production fluid circulation passage two-layer pipe is provides load fluid circulation passage and production after sand fallout when filling when.
The internal layer bushing pipe 12 of two-layer pipe guarantees that top interval is in isolation when filling, and annular pressure acts on operation completely
Layer；Meanwhile internal layer bushing pipe 12 guarantees when filling that lower part interval is in and is isolated state, annular space or inner pressure inside pipe and liquid is complete
Act on work layer.
Production cycle sliding sleeve 14 and filling sliding sleeve 8 on internal layer bushing pipe use same switch, close, open tool control
System, switch, close, opening tool can control opening or closing for all sliding sleeves in outer layer tubing string, the production on internal lining pipe follows
Switching tools of the ring sliding sleeve as filling sliding sleeve use carry out switching operations, enhance the operability of system.
The production of each perforation layer can all be realized by the production cycle sliding sleeve 14 on opening and closing internal layer bushing pipe 12.Sand control is made
After industry, switching operations are carried out according to production requirement to each layer production cycle sliding sleeve.Tubing string (flow string is adopted without tripping in point
On production sliding sleeve and insertion sealing, connected pipes etc.) can be realized and point adopt operation.
Internal layer bushing pipe 12 is set in screen casing, and internal layer bushing pipe 12 and production cycle sliding sleeve 14 are connected as internal lining pipe tool, complete
Portion's sand control fracturing work process and later period production process, screen casing 13, internal layer bushing pipe 12 and production cycle sliding sleeve 14 are integral, this
The structure of sample, which can be realized, controls the state that screen casing turns on or off under any state, becomes screen casing optionally
" blind pipe ".
Screen casing internal layer bushing pipe is closed or opened that state is controllable, and being different from current technology screen section can be only in opening
State.In this way during practical packing job just without for isolation drilling rod and casing pressure, preventing it from scurrying into non-work layer and
It must be equipped with including some column sealings such as top isolating seal, bottom isolating seal.
The setting of the production cycle sliding sleeve property of can choose on internal layer bushing pipe one or more, for production when liquid flow out
Alternative channel is provided.The alternative production cycle turned on or off on each layer internal lining pipe after sand control fracturing work
Sliding sleeve, thus realize to screen casing to turn on or off state controllable.It thus no longer needs to tripping in point and adopts flow string (sand-proof pipe
Column inner oil tube and sliding sleeve insertion sealing etc.), separate zone production can be realized.
Service tube-column, all connection tubing strings in addition to packing tool 19 are all single layer structure, are different from current primary
Multiple gravel pack tool (top is the double-deck washing pipe structure).This design increases filling pipe tool inside and outside space, can reach
Reduce the effect of fluid friction resistance.
Service tube-column be not present as conventional service tube-column washing pipe and central, tubular at " small space ", " small space " can be to warp
The fluid crossed generates very big frictional resistance, which accounts for the major part of overall operation frictional resistance.With single layer of service tubing string and bilayer
Outer layer tubing string matches in substitution " small space ", and fluid course area is much larger than the flow area of conventional sand control operation, can be very big
Ground reduces frictional resistance.Entire service tube-column inherently only has packing tool part to need the double-deck tubular column structure, and length is only 5 meters of left sides
The right side contributes whole frictional resistance smaller.
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited to upper
The specific embodiment stated, the above mentioned embodiment is only schematical, be not it is restrictive, this field it is common
Technical staff under the inspiration of the present invention, in the case where not departing from present inventive concept and scope of the claimed protection, goes back
Many forms can be made, within these are all belonged to the scope of protection of the present invention.
Claims (4)
1. a kind of large span perforated interval single multilayer gravel pack tools, the large span perforated interval is equipped with a top perforation
Layer, zero to multiple middle part perforation layers and a bottom perforations layer, which is characterized in that the gravel pack tools include passing through entirely to penetrate
Service tube-column of the outer layer tubing string and tripping in of hole section in the outer layer tubing string,
The outer layer tubing string includes the sump packer set gradually from bottom to up, is inserted in the outer of the sump packer top
Layer tubular body part and the top packer assembly being connect with the outer layer tubing string main part；
The top packer assembly includes that sequentially connected top packer, top core sealing drum, filling from top to bottom are slided
Set, lower core sealing drum and display fixing seal cylinder；
The main part of the outer layer tubing string includes bottom operation pipeline section corresponding with bottom perforations layer and all middle part perforation layers
One-to-one middle part operation pipeline section and sand control section corresponding with top perforation layer；
The sand control section, the middle part operation pipeline section and the bottom operation pipeline section are equipped with sand control corresponding with corresponding perforation layer
Screen casing and its internal layer bushing pipe are formed with annular space between the internal layer bushing pipe and the sand control screen, serve as a contrast in the internal layer
Production cycle sliding sleeve is connected on pipe；
The sand control section, the middle part operation pipeline section and bottom operation pipeline section screen casing upper end are respectively connected with a blind pipe；
The middle part operation pipeline section and the bottom operation pipeline section blind pipe upper end are equipped with sequentially connected display from bottom to up and fix
Sealing drum, lower core sealing drum, filling sliding sleeve and top core sealing drum, isolation packer and lower part are tested and are sealed sealed tube, institute
Display fixing seal cylinder is stated to connect with the upper end of the blind pipe；
It is equipped on the internal layer bushing pipe of the middle part operation pipeline section and the top operation pipeline section and is located at the production cycle sliding sleeve
The top of top, which is tested, is sealed sealed tube；
The blind pipe of the sand control section is connect with the display fixing seal cylinder of the top packer assembly；
The lower end of the bottom operation pipeline section, which is equipped with, inserts the solid anchoring insertion seal on the sump packer top；
The service tube-column is equipped with sequentially connected tripping in washing pipe, packing tool, loading indicator, sliding sleeve operative employee from top to bottom
Tool matches long washing pipe and bottom isolated tube；
It is equipped with guide shoe in the bottom of the bottom isolated tube, bottom is equipped in the inside of the bottom isolated tube and ball-and-seat is isolated,
It is equipped with bottom isolation cycle hole on the top of the bottom isolated tube, is equipped with and is mounted in the lower section in bottom isolation cycle hole
Bottom isolating seal module I and bottom isolating seal module II on the bottom isolated tube, the bottom isolating seal module I
The bottom isolating seal module II is close to bottom isolation cycle hole；
The packing tool is equipped with sequentially connected direct circulation pipe nipple, filling bypass short joint and reverse circulating sub from top to bottom,
The bottom of the reverse circulating sub is equipped with ball-and-seat, and reversing port is equipped on the reverse circulating sub, short in the reacting cycle
Hydraulic positioner, seal modules III, seal modules IV are installed, the reversing port, seal modules III and described on section
Seal modules IV are respectively positioned on the top of the hydraulic positioner, and the seal modules III and the seal modules IV are located at institute
State the two sides up and down of reversing port；
The filling bypass short joint and the direct circulation pipe nipple are all made of double-layer structure, are equipped with annular space, the direct circulation pipe nipple
Annular space is connect by the annular space of the filling bypass short joint with the reverse circulating sub, and side is equipped on the filling bypass short joint
Logical pack hole；
Seal modules I and seal modules II are installed on the direct circulation pipe nipple, are set on the outer wall of the direct circulation pipe nipple
There is a circulation port being connected to direct circulation pipe nipple annular space, the circulation port is located at the seal modules I and the seal modules II
Top；
During carrying out sand control operation to bottom perforations layer, seal modules II and institute when setting, in the service tube-column
It states the lower part on bottom operation pipeline section and tests and be sealed sealed tube cooperation sealing, seal modules III and the bottom in the service tube-column
Top core sealing drum on operation pipeline section cooperates sealing, and envelope is tested in the lower part that the pack hole is located on the bottom operation pipeline section
Between top core sealing drum on sealing drum and the bottom operation pipeline section, the seat of bottom operation pipeline section isolation packer is constructed
Seal channel；When testing envelope, the top on seal modules II and the bottom operation pipeline section in the service tube-column, which is tested, is sealed sealed tube
Cooperation sealing, the seal modules III in the service tube-column tested with the lower part on the bottom operation pipeline section be sealed sealed tube cooperate it is close
Envelope, the lower part being sealed in sealed tube and the bottom operation pipeline section is tested on the top that the pack hole is located on the bottom operation pipeline section
It tests and is sealed between sealed tube, the envelope of testing of building bottom operation pipeline section isolation packer enters channel；It is described hydraulic fixed when filling pressure break
Position device is located on the display fixing seal cylinder on the bottom operation pipeline section, and the two is tightly connected, in the service tube-column
Top core sealing drum on seal modules II and the bottom operation pipeline section, which cooperates, to be sealed, the sealed mould in the service tube-column
Lower core sealing drum on block III and the bottom operation pipeline section, which cooperates, to be sealed, and the pack hole is located at the bottom working pipe
Between the lower core sealing drum on top core sealing drum and the bottom operation pipeline section in section, the reversing port is located at
The lower section of the lower core sealing drum of the bottom operation pipeline section constructs direct circulation channel；When reacting cycle cleans, the service pipe
The lower core sealing drum on seal modules IV and the bottom operation pipeline section on column, which cooperates, to be sealed, in the service tube-column
Top core sealing drum on seal modules II and the bottom operation pipeline section, which cooperates, to be sealed, the pack hole and the reacting cycle
Hole is located at the lower core sealing drum on the top core sealing drum and the bottom operation pipeline section on the bottom operation pipeline section
Between, construct reacting cycle flushing channel；
During carrying out sand control operation to middle part perforation layer, seal modules II and institute when setting, in the service tube-column
Middle part in the middle part of stating on operation pipeline section, which is tested, is sealed sealed tube cooperation sealing, seal modules III and the middle part in the service tube-column
Top core sealing drum on operation pipeline section cooperates sealing, and the pack hole, which is located to test in the middle part of the middle part operation pipeline section, to be sealed
Between sealed tube and the top core sealing drum of the middle part operation pipeline section, the isolation packer of the middle part operation pipeline section is constructed
Set channel；When testing envelope, the top on seal modules II and the middle part operation pipeline section in the service tube-column, which is tested, is sealed envelope
Cylinder cooperation seals, and the lower part on seal modules III and the middle part operation pipeline section in the service tube-column, which is tested, is sealed sealed tube cooperation
Sealing, the top that the pack hole is located at the middle part operation pipeline section, which is tested, to be sealed the lower part of sealed tube and the middle part operation pipeline section and tests
It is sealed between sealed tube, the envelope of testing for constructing the isolation packer of the middle part operation pipeline section enters channel, in the service tube-column
Lower part adjacent thereto, which is tested, under bottom isolating seal module II and the operation pipeline section is sealed sealed tube cooperation sealing, the isolation of building bottom
On return channel；When filling pressure break, the hydraulic positioner is located on the display fixing seal cylinder of the middle part operation pipeline section, and two
Person is tightly connected, and the top core sealing drum on seal modules II and the middle part operation pipeline section in the service tube-column cooperates
It sealing, the lower core sealing drum on seal modules III and the middle part operation pipeline section in the service tube-column, which cooperates, to be sealed,
The pack hole be located at the middle part operation pipeline section top core sealing drum and the middle part operation pipeline section lower core it is close
Between sealed tube, the reversing port is located at the lower section of the lower core sealing drum of the middle part operation pipeline section, and building direct circulation is logical
Road, the bottom isolating seal module I in the service tube-column is tested with lower part adjacent thereto under the operation pipeline section to be sealed sealed tube and matches
Sealing is closed, returns channel in the isolation of building bottom；Seal modules IV and the middle part when reacting cycle cleans, in the service tube-column
Lower core sealing drum on operation pipeline section cooperates sealing, seal modules II and the middle part working pipe in the service tube-column
Top core sealing drum in section cooperates sealing, and the pack hole and the reversing port are located at the upper of the middle part operation pipeline section
Between portion's core sealing drum and the lower core sealing drum of the middle part operation pipeline section, reacting cycle flushing channel is constructed；
During carrying out sand control operation to top perforation layer, when filling pressure break, the hydraulic positioner is located at the top
On the display fixing seal cylinder of portion's packer assembly, the two is tightly connected, the seal modules II in the service tube-column with it is described
Top core sealing drum on top packer assembly cooperates sealing, seal modules III and the top in the service tube-column
Lower core sealing drum on packer assembly cooperates sealing, and the pack hole is located at the upper core of the top packer assembly
Between heart sealing drum and the lower core sealing drum of the top packer assembly, the reversing port is located at top packing
The lower section of the lower core sealing drum of device assembly constructs direct circulation channel, the bottom isolating seal module I in the service tube-column
It is tested with lower part adjacent thereto under the sand control section and is sealed sealed tube cooperation sealing, return channel in the isolation of building bottom；Reacting cycle is clear
When washing, the lower core sealing drum of seal modules IV and the top packer assembly in the service tube-column, which cooperates, to be sealed,
The top core sealing drum of seal modules II and the top packer assembly in the service tube-column, which cooperates, to be sealed, described to fill
Filling perforation and the reversing port are located at the top core sealing drum and the top packer assembly of the top packer assembly
Lower core sealing drum between, construct reacting cycle flushing channel.
2. large span perforated interval single multilayer gravel pack tools according to claim 1, which is characterized in that the sliding sleeve
Operational instrument includes sequentially connected sliding bush closing tool, sliding sleeve switch instrument, sliding sleeve opening tool from top to bottom.
3. large span perforated interval single multilayer gravel pack tools according to claim 1, which is characterized in that in each institute
Internal layer bushing pipe is stated equipped with one or more described production cycle sliding sleeve.
4. large span perforated interval single multilayer gravel pack tools according to claim 1, which is characterized in that the lower part
Testing sealed tube is left-handed sealing drum.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910310247.6A CN110017121B (en) | 2019-04-17 | 2019-04-17 | Primary multilayer gravel packing tool for large-span perforation section |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910310247.6A CN110017121B (en) | 2019-04-17 | 2019-04-17 | Primary multilayer gravel packing tool for large-span perforation section |
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| CN110017121B CN110017121B (en) | 2021-10-19 |
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| CN111502609A (en) * | 2020-04-21 | 2020-08-07 | 中国海洋石油集团有限公司 | Water injection sand prevention pipe column capable of cleaning annular space of screen sleeve and well cleaning method |
| CN111706303A (en) * | 2020-07-01 | 2020-09-25 | 杨国 | One-time multilayer gravel filling sand prevention process and filling sand prevention tool pipe column |
| CN111927408A (en) * | 2020-10-10 | 2020-11-13 | 东营市瑞丰石油技术发展有限责任公司 | Packing string and sand control completion method |
| CN111927379A (en) * | 2020-10-14 | 2020-11-13 | 东营市瑞丰石油技术发展有限责任公司 | Bypass packer |
| CN111963111A (en) * | 2020-07-08 | 2020-11-20 | 中国海洋石油集团有限公司 | Loose low-permeability open hole horizontal well filling sand prevention and staged fracturing integrated process method |
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