CN207485415U - A kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string - Google Patents
A kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string Download PDFInfo
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- CN207485415U CN207485415U CN201721502112.2U CN201721502112U CN207485415U CN 207485415 U CN207485415 U CN 207485415U CN 201721502112 U CN201721502112 U CN 201721502112U CN 207485415 U CN207485415 U CN 207485415U
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- well
- steam injection
- tubing string
- production
- lost circulation
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Abstract
The utility model provides a kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string, including sequentially connected oil pipe from top to bottom, lifting pump, underground multifunctional control valve, sealing plug, the sealing plug outer wall is set with sealing drum, underground location tool, wherein sealing drum lower end connects underground location tool upper end by nipple joint, the underground location tool exterior wall setting positioning lock claw, the underground location tool lower end is fixed on by shear pin on sealing plug, the positioning lock claw outer wall setting gingival cyst of mucous gland in the newborn button, position the gingival cyst of mucous gland in the newborn button button opposite with the gingival cyst of mucous gland in the newborn button inside the packer for staying well of lock claw, the packer lower end connects sand screen.The utility model is to solve the problem of that steam injection, anti-flushing well, production need to carry out the problem of three times operations are time-consuming and laborious and existing heat extraction by steam injection well anti-flushing well causes reservoir temperature to reduce, so that it is guaranteed that steam injection efficiency.
Description
Technical field
The utility model is related to oil thermal recovery well flow string field, especially a kind of thermal production well steam injection, lost circulation prevention backwash
Well and production integration tubing string.
Background technology
Thick oil thermal extraction, which has been noted, needs stewing well after steam, boils in a covered pot over a slow fire after well open flow again, and then tripping in anti-flushing well tubing string carries out
After backwash well operations, then tripping in flow string, carry out oil recovery production.This mode is primarily present following deficiency：Steam injection, backwash
Well, production need carry out three times operations, flow chart is cumbersome, troublesome, costly, especially after high temperature steam injection, temperature in wellbore with
Pressure is higher, and operating risk is larger；Meanwhile tripping in anti-flushing well tubing string after steam injection, when carrying out anti-flushing well, working fluid easily leaks
It loses, into the oil reservoir of firm steam injection, anti-flushing well working fluid also causes new cold damage while stratum is polluted to stratum, in addition,
Three times job executions, the construction time is long, to prevent blowout, it is necessary to kill-job, and well killing fluid is also easily missed in oil reservoir, thus
The development effectiveness of strong influence steam injection quality and heavy oil wells.To solve this problem, it is anti-to have invented a kind of steam injection, lost circulation prevention by spy
Well-flushing and the integrated pipe column for production of recovering the oil.It realizes one-trip string, realizes steam injection, lost circulation prevention anti-flushing well and oil recovery production.
By retrieval, the tubing string for finding to realize steam injection, anti-flushing well simultaneously, produce has very much, but overall structure technical side
Case simultaneously differs, while can solve the problems, such as that the tubing string that existing heat extraction by steam injection well anti-flushing well causes reservoir temperature to reduce is not sent out
It is existing.
Utility model content
The purpose of this utility model is to provide a kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string, with
Solve the problem of that steam injection, anti-flushing well, production needs three times operations of progress time-consuming and laborious and existing heat extraction by steam injection well anti-flushing well
The problem of reservoir temperature is caused to reduce, so that it is guaranteed that steam injection efficiency.
The purpose of this utility model can be achieved by the following technical measures：
The thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string include from top to bottom sequentially connected oil pipe,
Lifting pump, underground multifunctional control valve, sealing plug, the sealing plug outer wall suit sealing drum, underground location tool, wherein
Sealing drum lower end connects underground location tool upper end by nipple joint, and the underground location tool exterior wall setting positions lock claw,
The underground location tool lower end is fixed on by shear pin on sealing plug, the positioning lock claw outer wall setting gingival cyst of mucous gland in the newborn button, positioning
The gingival cyst of mucous gland in the newborn button of lock claw button opposite with the gingival cyst of mucous gland in the newborn button inside the packer for staying well, the packer lower end connects sand screen.
The purpose of this utility model can be also achieved by the following technical measures：
The underground multifunctional control valve includes central tube, circulating sleeve, baffle ring, spring, is opened up on the central tube radially
Upper conversion hole, the lower conversion hole of perforation, center inside pipe wall open up inner conical surface protrusion, and upper conversion hole is located at inner conical surface protrusion top,
Lower conversion hole is located at inner conical surface protrusion lower section, and outside central tube, the baffle ring is connected under circulating sleeve the circulating sleeve
Portion, the spring are installed in the lower part of baffle ring, and lower spring end is withstood on sealing plug upper surface.
The center pipe outer wall opens up limiting stand, and wherein circulating sleeve limits axially downwards relative to limiting stand, wherein baffle ring
It is axially upwardly limited relative to limiting stand.
When on limiting stand, circulating sleeve blocks conversion hole, lower conversion hole completely at this time, described to follow for the baffle ring limiting
When ring set follows the interstage sleeve to compress spring slide downwards, circulating sleeve only blocks lower conversion hole, to the release of upper conversion hole.
Sealing ring is respectively provided on the inside of the cycle set upper side and on the outside of limiting stand.
The inner conical surface high spot axial direction forms inner conical surface undergauge hole, by throwing steel ball at inner conical surface undergauge hole.
Sealing plug upper end outer wall is the conical surface, and sealing drum upper port corresponds to the above-mentioned conical surface, sealing drum inner wall and sealing
Plug outer wall is sealing state.
The positioning lock claw includes basic ring and longitudinal split-type claw being uniformly arranged on basic ring, and the gingival cyst of mucous gland in the newborn button is convex
Card lifting mesa-shaped is arranged on split-type claw outer wall.
The utility model has the advantages that compared with prior art：
1st, a kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string G.I.H can realize that injection is steamed
Vapour, lost circulation prevention anti-flushing well are freely converted with three kinds of working conditions of production of recovering the oil.
2nd, during backwash well operations, flushing fluid pushes the circulating sleeve of underground multifunctional control valve, baffle ring compressed spring, under oil pipe
Row of channels is truncated, and flushing fluid cannot enter oil layer section, reduce influence of the lost circulation to steam injection efficiency after steam injection.
Description of the drawings
Fig. 1 is the structure diagram of the utility model embodiment；
Configuration state figure when Fig. 2 is the utility model embodiment steam injection；
Configuration state figure when Fig. 3 is the utility model embodiment anti-flushing well；
Fig. 4 is configuration state figure when the utility model embodiment is recovered the oil.
In figure：It is oil pipe 1, lifting pump 2, underground multifunctional control valve 3, steel ball 4, circulating sleeve 5, spring 6, sealing plug 7, close
Sealed tube 8, underground location tool 9, positioning lock claw 10, shear pin 11, packer 12, sand screen 13, sucker rod 14.
Specific embodiment
Detailed description and technology contents in relation to the utility model, cooperation description of the drawings is as follows, however attached drawing is only to refer to
With purposes of discussion, not it is used for limiting the utility model.
According to Fig. 1 to Fig. 4, a kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string are included from top to bottom
Sequentially connected oil pipe 1, lifting pump 2, underground multifunctional control valve 3, sealing plug 7, the sealing plug outer wall suit sealing
Cylinder 8, underground location tool 9, wherein sealing drum lower end connect underground location tool upper end, the underground location by nipple joint
9 outer wall of tool setting positioning lock claw 10, the underground location tool lower end is fixed on by shear pin 11 on sealing plug, described fixed
Position lock claw outer wall setting gingival cyst of mucous gland in the newborn button positions the gingival cyst of mucous gland in the newborn button button opposite with the gingival cyst of mucous gland in the newborn button inside the packer 12 for staying well of lock claw, described
Packer lower end connects sand screen 13.
The underground multifunctional control valve includes central tube, circulating sleeve 5, baffle ring, spring 6, and diameter is opened up on the central tube
To the upper conversion hole of perforation, lower conversion hole, center inside pipe wall opens up inner conical surface protrusion, and upper conversion hole is located in inner conical surface protrusion
Side, lower conversion hole are located at inner conical surface protrusion lower section, and for the circulating sleeve outside central tube, the baffle ring is connected to circulating sleeve
Lower part, the spring are installed in the lower part of baffle ring, and lower spring end is withstood on sealing plug upper surface.
The center pipe outer wall opens up limiting stand, and wherein circulating sleeve limits axially downwards relative to limiting stand, wherein baffle ring
It is axially upwardly limited relative to limiting stand.
When on limiting stand, circulating sleeve blocks conversion hole, lower conversion hole completely at this time, described to follow for the baffle ring limiting
When ring set follows the interstage sleeve to compress spring slide downwards, circulating sleeve only blocks lower conversion hole, to the release of upper conversion hole.
Sealing ring is respectively provided on the inside of the cycle set upper side and on the outside of limiting stand.
The inner conical surface high spot axial direction forms inner conical surface undergauge hole, by throwing steel ball 4 at inner conical surface undergauge hole.
Sealing plug upper end outer wall is the conical surface, and sealing drum upper port corresponds to the above-mentioned conical surface, sealing drum inner wall and sealing
Plug outer wall is sealing state.
The positioning lock claw includes basic ring and longitudinal split-type claw being uniformly arranged on basic ring, and the gingival cyst of mucous gland in the newborn button is convex
Card lifting mesa-shaped is arranged on split-type claw outer wall.
The utility model is used for the specific implementation method of thermal production well：Sand control gravel filling finishes, and gravel is filled in sand screen
13 outsides, full of entire oil jacket annular space, sand control pipe rotating forward is given up, and acts service tube-column.Connect well from bottom to top in order
Lower positioning tool 9, sealing plug 7, sealing drum 8, underground multifunctional control valve 3, lifting pump 2, oil pipe 1, the effect of sealing drum are
Ensure that sealing plug after the cutting of pin 11, while up and down, ensures the sealing between sealing plug and annular space, so as to really
Protecting steam will not scurry out, and sealing drum 8 is threadedly coupled with underground location tool 9, be placed in 7 outside of sealing plug, underground location work
Tool 9 is fixed by shear pin 11 and sealing plug 7.Sealing drum 8 and underground location tool 9 are sleeved on the outside of sealing plug 7, and underground is fixed
Position tool 9 is fixed on by shear pin 11 on sealing plug.7 lower part of sealing plug is inserted into sand control pipe and stays well top of fish.Lower sand-proof pipe
Column mainly passes through service aid by silk plug, sand screen, packing tool down toward the position for needing sand control, and filling anti-sand construction finishes
Afterwards, packing tool is set, and by suppressing, service aid is disengaged with packing tool, acts service aid, stays in the top of underground
As sand control pipe stays well top of fish, i.e. Fig. 2 show the top of packer 12, because packing tool has the function of packer,
So packer 12, or packing tool.9 lower part outer wall of underground location tool installs positioning lock claw 10, positions lock claw 10
External screw thread is gingival cyst of mucous gland in the newborn button, positions the gingival cyst of mucous gland in the newborn button make-up inside packer 12 of the 10 outside gingival cyst of mucous gland in the newborn button of lock claw with staying well, and sealing drum 8 is solid
Due to staying Jing Yudingchu.It pressurizes under tubing string, shear pin 11 is cut, and sealing plug 7 can be up and down, and sealing drum 8 ensures sealing plug 7
With the sealing of annular space, the steam generation channeling of injection is avoided.The upper cycle that the steam of injection passes through underground multifunctional control valve 3
Hole, lower circulation port enter pay interval.Well is boiled in a covered pot over a slow fire after having noted steam, boils in a covered pot over a slow fire open flow after well, then carries out backwash well operations.Backwash
Liquid injected by oil jacket annular space, circulating sleeve 5, baffle ring, the spring 6 of liquid compression underground multifunctional control valve 3, upper circulation port dew
Go out, liquid returns to ground by upper circulation port, oil pipe.Complete backwash well operations.During oil well production, tripping in sucker rod 14, under
Portion's band pump valve, oil stream can enter oil pipe by the side stream passages of lower circulation port, upper circulation port, also can the open-top entrance of steel ball 4 oil
Pipe, you can realize oil well production.
The main advantage of the utility model is mainly reflected in：
1st, it can realize that injection steam, lost circulation prevention anti-flushing well are freely converted with three kinds of working conditions of production of recovering the oil.
2nd, it is matched by the use of the tubing string and with packer, flushing fluid does not enter oil layer section, reduces well-flushing after steam injection
Liquid misses the influence to steam injection efficiency.
The above is only the preferred embodiment of the present invention, non-to limit the scope of the claims of the utility model,
He uses the equivalence changes of the utility model patent spirit, should all belong to the scope of the claims of the utility model.
Claims (8)
1. a kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string, which is characterized in that including from top to bottom successively
Oil pipe, lifting pump, underground multifunctional control valve, the sealing plug of connection, the sealing plug outer wall suit sealing drum, underground are fixed
Position tool, wherein sealing drum lower end connect underground location tool upper end by nipple joint, and the underground location tool exterior wall is set
Positioning lock claw is put, the underground location tool lower end is fixed on by shear pin on sealing plug, the positioning lock claw outer wall setting
Gingival cyst of mucous gland in the newborn button positions the gingival cyst of mucous gland in the newborn button button opposite with the gingival cyst of mucous gland in the newborn button inside the packer for staying well of lock claw, the packer lower end connection filter
Sandpipe.
2. a kind of thermal production well steam injection according to claim 1, lost circulation prevention anti-flushing well and production integration tubing string, feature exist
In the underground multifunctional control valve includes central tube, circulating sleeve, baffle ring, spring, and radially perforation is opened up on the central tube
Upper conversion hole, lower conversion hole, center inside pipe wall open up inner conical surface protrusion, and upper conversion hole is located at inner conical surface protrusion top, lower conversion
Hole is located at inner conical surface protrusion lower section, and for the circulating sleeve outside central tube, the baffle ring is connected to the lower part of circulating sleeve, described
Spring is installed in the lower part of baffle ring, and lower spring end is withstood on sealing plug upper surface.
3. a kind of thermal production well steam injection according to claim 2, lost circulation prevention anti-flushing well and production integration tubing string, feature exist
In, the center pipe outer wall opens up limiting stand, and wherein circulating sleeve limits axially downwards relative to limiting stand, wherein baffle ring relative to
Limiting stand axially upwardly limits.
4. a kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string according to Claims 2 or 3, special
Sign is that when on limiting stand, circulating sleeve blocks conversion hole, lower conversion hole completely at this time, described to follow for the baffle ring limiting
When ring set follows the interstage sleeve to compress spring slide downwards, circulating sleeve only blocks lower conversion hole, to the release of upper conversion hole.
5. a kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string according to Claims 2 or 3, special
Sign is, sealing ring is respectively provided on the inside of the cycle set upper side and on the outside of limiting stand.
6. a kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string according to Claims 2 or 3, special
Sign is, the inner conical surface high spot axial direction forms inner conical surface undergauge hole, by throwing steel ball at inner conical surface undergauge hole.
7. a kind of thermal production well steam injection according to claim 1, lost circulation prevention anti-flushing well and production integration tubing string, feature exist
It is the conical surface in, sealing plug upper end outer wall, sealing drum upper port corresponds to the above-mentioned conical surface, outside sealing drum inner wall and sealing plug
Wall is sealing state.
8. a kind of thermal production well steam injection according to claim 1, lost circulation prevention anti-flushing well and production integration tubing string, feature exist
In the positioning lock claw includes basic ring and longitudinal split-type claw being uniformly arranged on basic ring, the gingival cyst of mucous gland in the newborn button block for protrusion
Mesa-shaped is arranged on split-type claw outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721502112.2U CN207485415U (en) | 2017-11-10 | 2017-11-10 | A kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721502112.2U CN207485415U (en) | 2017-11-10 | 2017-11-10 | A kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207485415U true CN207485415U (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721502112.2U Active CN207485415U (en) | 2017-11-10 | 2017-11-10 | A kind of thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string |
Country Status (1)
| Country | Link |
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| CN (1) | CN207485415U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779588A (en) * | 2017-11-10 | 2019-05-21 | 中国石油化工股份有限公司 | Thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string |
-
2017
- 2017-11-10 CN CN201721502112.2U patent/CN207485415U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779588A (en) * | 2017-11-10 | 2019-05-21 | 中国石油化工股份有限公司 | Thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string |
| CN109779588B (en) * | 2017-11-10 | 2023-06-16 | 中国石油化工股份有限公司 | Steam injection, leakage-proof back flushing and production integrated tubular column for thermal production well |
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