CN206581934U - A kind of horizontal well bore hole screen casing damage testing tubing string - Google Patents
A kind of horizontal well bore hole screen casing damage testing tubing string Download PDFInfo
- Publication number
- CN206581934U CN206581934U CN201720124957.6U CN201720124957U CN206581934U CN 206581934 U CN206581934 U CN 206581934U CN 201720124957 U CN201720124957 U CN 201720124957U CN 206581934 U CN206581934 U CN 206581934U
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- CN
- China
- Prior art keywords
- screen casing
- self
- turn
- tubing string
- horizontal well
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- 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.)
- Withdrawn - After Issue
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- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 18
- 239000010985 leather Substances 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 abstract description 25
- 238000001514 detection method Methods 0.000 abstract description 18
- 238000000034 method Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 238000011010 flushing procedure Methods 0.000 description 7
- 238000005406 washing Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 239000009671 shengli Substances 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model provides a kind of horizontal well bore hole screen casing damage testing tubing string, including from top to bottom according to the high-pressure self-sealing device, liquid stream conversion device, choked flow packer of connection, the choked flow packer is provided with two, insulate in screen casing inwall, perforated pipe is connected between two choked flow packers, the liquid flow hole of radial direction is opened up on the perforated pipe, the oil pipe is communicated to ground sheaf space by the liquid flow hole of perforated pipe and the sieve aperture of screen casing.The utility model can quick and precisely find well sandscreen damaged location, and on the basis of sand control screen leak source effective detection, carry out inexpensive improvement, extend the horizontal well sand control life, give full play to horizontal productivity advantage.
Description
Technical field
The utility model is related to downhole petroleum screen casing detection operation tubing string, especially a kind of horizontal well bore hole screen casing breakage inspection
Test tube post.
Background technology
Horizontal well bore hole sieve tube completion has turned into the main of major oilfield horizontal wells exploitation as a sand control completion technology
Means, by the end of the year 2015, tired 5345 mouthfuls of the operation horizontal well of Shengli Oil Field, wherein 3360 mouthfuls of bore hole screen sand control completion are accounted for
The 63% of the total well number of horizontal well, and it is distributed in the oil reservoirs such as viscous crude, water drive more.With the extension of production time, fluid producing intensity increases
Greatly, particularly sand control screen Local Damaged is easily caused during heavy crude reservoir pickling and many round steam injections are handled up.For this
Class sand screen fails well routine remediation processes are generally frequent sand washing inspection pump or the general sand control of full pit shaft, are not had also both at home and abroad at present
For the means of bore hole screen casing breaking point effective detection.
By retrieval, the damaged technology of special detection screen casing is not found, a kind of visualization screen casing intensity is simply found that
Detection means, publication number 205374161U, publication date 2016-07-06.But this technology, from goal of the invention, be solved with the application
Technical problem, technical scheme, technique effect etc. all not thes least concerned.
Utility model content
The purpose of this utility model is to provide a kind of horizontal well bore hole screen casing damage testing tubing string, can quick and precisely find
Well sandscreen damaged location, and on the basis of sand control screen leak source effective detection, carry out inexpensive improvement, extend horizontal well
Sand control life, give full play to horizontal productivity advantage.
The purpose of this utility model can be achieved by the following technical measures：
The horizontal well bore hole screen casing damage testing tubing string includes changing according to the high-pressure self-sealing device of connection, liquid circulation from top to bottom
Device, choked flow packer, the choked flow packer are provided with two, insulate in screen casing inwall, two choked flow packers it
Between connect the liquid flow hole that radial direction is opened up on perforated pipe, the perforated pipe, the oil pipe passes through the liquid flow hole of perforated pipe and screen casing
Sieve aperture is communicated to ground sheaf space.
The purpose of this utility model can be also achieved by the following technical measures：
The high-pressure self-sealing device includes self-styled body, sealed core, and the sealed core upper end connects self-styled support ring, then
Again in the overall self-styled body of press-in, sealed core seals up oil-pipe external wall, and self-styled support ring is pressed on self-styled body by pressure cap,
The self-styled body lower end is connected on well head four-way by self-sealing flange, and well head four-way lower end is connected on wellhead flange；Institute
Self-styled body is stated provided with self-styled outlet, the well head four-way is provided with cannula inlet port.
The liquid stream conversion device includes turn of tidal stream device, outer sealed tube, leather cup and unidirectionally sealed, the turn of tidal stream device upper end connection top
Oil pipe, lower end by box cupling connect below oil pipe, the turn of tidal stream device do not connected with the oil pipe of top, and the outer sealed tube is set
Put between turn of tidal stream device and sleeve pipe, inner clip annular space is formed between outer sealed tube and the turn of tidal stream device, between outer sealed tube and sleeve pipe
Outer clip annular space is formed, the outer sealed tube upper end is suspended on well head four-way inwall by hanger, and the turn of tidal stream device is opened up radially
Turn of tidal stream hole, the self-styled outlet, inner clip annular space, turn of tidal stream hole, the oil pipe below turn of tidal stream device be interconnected, and described sleeve pipe entrance leads to
Cross outer clip annular space and be communicated to oil jacket annular space.
Leather cup is set unidirectionally to seal between the turn of tidal stream device lower end outer wall and outer sealed tube inwall.
The choked flow packer includes choked flow packer body, fluid resistant seal core, and the fluid resistant seal core retainer plate is sealed in choked flow
Every device body exterior, fluid resistant seal core bottom sets baffle ring, and the fluid resistant seal core packing is in screen casing inwall.
The length of the outer sealed tube is greater than the length of screen casing.
The choked flow packer rear end of least significant end sets plug.
The utility model has the advantages that：
(1) continuous sand flushing well head is designed, and is solved and is made up a joint easy sand card tubing string in detection process and sand washing is discontinuously detected
As a result intermittent influences shake out the problem of judge；
(2) down-hole fluid flow switch technology, coordinates continuous sand flushing well head to realize liquid stream rapid translating function, it is ensured that construction
Continuity；
(3) underground continuous sand flushing device is designed, and is realized the functions such as liquid circulation is changed, breaking point is detected, is solved bore hole sieve
The problem of inside and outside sand washing fluid circulation of pipe, leak source position judgment hardly possible；
(4) can pressure relief device be designed as detection tubing string remove there is provided circulation passage, solve during tubing string is above carried overflow
The safety problems such as stream, it is ensured that the implementation of technique.
Brief description of the drawings
Fig. 1 is the utility model horizontal well bore hole screen casing damage testing tubular column structure schematic diagram；
Fig. 2, Fig. 3 are respectively Fig. 1 partial enlarged drawings.
In figure：Box cupling 1, high-pressure self-sealing device 2, pressure cap 3, self-styled support ring 4, sealed core 5, self-styled body 6, self-styled outlet
7, liquid stream conversion device 8, self-sealing flange 9, hanger 10, well head four-way 11, outer sealed tube 12, cannula inlet port 13, wellhead flange
14, turn of tidal stream device 15, turn of tidal stream hole 16, leather cup unidirectionally seals 17, oil pipe 18, sleeve pipe 19, joint 20, choked flow packer 21, fluid resistant seal
Core 22, baffle ring 23, choked flow packer body 24, perforated pipe 25, liquid flow hole 26, screen casing 27, plug 28.
Embodiment
Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing only provides ginseng
Examine and purposes of discussion, not for being any limitation as to the utility model.
According to Fig. 1 to 3, horizontal well bore hole screen casing damage testing tubing string, mainly by high-pressure self-sealing device 2, liquid stream conversion
Put 8, choked flow packer 21 and perforated pipe 25 is constituted.
High-pressure self-sealing device 2 is made up of pressure cap 3, self-styled support ring 4, sealed core 5, self-styled body 6 and self-sealing flange 9.Its
In, self-styled body 6 is provided with self-styled outlet 7, the liquid stream flow pass that this mouthful is used in detection process.High-pressure self-sealing device 2
Bottom is connected by self-sealing flange 10 with well head four-way 11, and sealed core 5 is pressed in oil-pipe external wall formation sealing.
By hanger 10, outer sealed tube 12, turn of tidal stream device 15 and leather cup, unidirectionally envelope 17 is constituted liquid stream conversion device 8.Wherein, turn
Flow device 15 and be provided with turn of tidal stream hole 16, the hole is used for liquid in detection process and flows back to circulation road.Unidirectionally envelope 17 is pressed in outer sealed tube to leather cup
Sealing is formed on 12 inwall.Liquid stream conversion device 8 is fixed on the inwall of well head four-way 11 by hanger 10.Turn of tidal stream device 15 with
Top oil pipe is connected through a screw thread, and its underpart is threadedly coupled with bottom oil pipe by box cupling 1.
Choked flow packer 21 is made up of fluid resistant seal core 22, baffle ring 23 and choked flow packer body 24.The detection tubing string bag
Two choked flow packers above and below including, wherein, the upper end of top choked flow packer is threadedly coupled with oil pipe by joint 20, its lower end
It is threadedly coupled with perforated pipe 25.The upper end of top choked flow packer is threadedly coupled with perforated pipe 25 by joint 20, its lower end with
Plug 28 is connected through a screw thread.Fluid resistant seal core 22 is pressed in internal surface of sleeve pipe formation sealing.
Perforated pipe 25 is provided with liquid flow hole 26, and the hole is used for the return flow line of liquid stream in detection process.
Its implementation process is that continuous sand flushing wellhead assembly and well liquid stream conversion device and underground sand-wash device are passed through into oil
Pipe connects tripping in bore hole screen casing detection position, and ground is passed through according to reacting cycle well-flushing sand washing process connecting pipeline, sand washing fluid
The reverse inlet of Special wellhead enters in the two-tube double wall of well liquid stream conversion device, enters oil jacket ring by liquid stream crossover tool
In the air, when liquid reaches bore hole screen casing detection position, construction forces is changed by the liquid circulation on liquid stream sand flushing device and enter naked
Eye thimble is empty, and sand washing fluid carries stratum Extra-fine sand and passes through damaged screen casing to enter in the central tube of underground sand-wash leak finding device, and takes
Band is measuring situation of shaking out to ground by ground real-time monitoring system, so that judge to detect section bore hole screen casing integrality, it is determined that
Screen casing damaged part.Next step control measures are carried out according to testing result, recovers oil well and normally produces.
The utility model by following operation sequence at the scene in use, carried out：
Combination water horizontal well bore hole screen casing damage testing tubing string is installed according to the length of horizontal well sieve tube section, wherein, external seal
The length of pipe 12 is greater than the length of screen casing 27, and the length of perforated pipe 25 is designed according to the length of screen casing 27.Design principle
For：Length between two packers is designed according to sieve tube segment length by being actually actually needed, typically long with single oil pipe
The multiple of degree is designed.For example, if sieve tube segment is 50m, its length can be designed as a tubing length, if sieve tube segment is
200m, can be designed as two tubing lengths.Its effect length drags the length of the distance of a tubing string detection, therefore, and it is grown
Degree needs to be designed according to actual conditions.By under horizontal well bore hole screen casing damage testing tubing string to precalculated position；It is counter to replace
High-quality completion fluid；Detect to suck sand situation；Horizontal well bore hole screen casing damage testing tubing string is moved down to precalculated position, repeats to grasp
Make, carry out the detection of next section of screen casing, until detection complete segment screen casing.
According to Fig. 1, high-quality completion fluid process is instead replaced：High-quality completion fluid is squeezed into by cannula inlet port 13, by by covering
Oil jacket annular space is advanced under the double wall that pipe 19 and outer sealed tube 12 are constituted, oil jacket annular space is entered back into, liquid stream passes through on perforated pipe 25
Liquid flow hole 26 enter oil pipe, then from turn of tidal stream hole 16 to enter the double wall that oil pipe and outer sealed tube 12 constitute up, and from it is self-styled go out
Mouth 7 flows out.
The tubing string can complete the damage testing of horizontal well bore hole screen casing, and not influence to make up a joint in detection process, can
Continuous sand flushing, it is to avoid the problem of sand card tubing string, and testing result is accurate, and construction safety is reliable, realizes horizontal well bore hole
The new breakthrough of screen casing damage testing technology.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the scope of the claims of the present utility model, its
He uses the equivalence changes of patent spirit of the present utility model, all should all belong to the scope of the claims of the present utility model.
Claims (7)
1. a kind of horizontal well bore hole screen casing damage testing tubing string, it is characterised in that including from top to bottom according to the high-pressure self-sealing of connection
Device, liquid stream conversion device, choked flow packer, the choked flow packer are provided with two, insulate in screen casing inwall, at two
The liquid flow hole that radial direction is opened up on perforated pipe, the perforated pipe, the liquid flow hole that oil pipe passes through perforated pipe are connected between choked flow packer
Ground sheaf space is communicated to the sieve aperture of screen casing.
2. a kind of horizontal well bore hole screen casing damage testing tubing string according to claim 1, it is characterised in that the high pressure is certainly
Seal apparatus includes self-styled body, sealed core, and the sealed core upper end connects self-styled support ring, then overall again to be pressed into self-styled body
Interior, sealed core seals up oil-pipe external wall, and self-styled support ring is pressed on self-styled body by pressure cap, and the self-styled body lower end leads to
Cross self-sealing flange to be connected on well head four-way, well head four-way lower end is connected on wellhead flange；The self-styled body is provided with certainly
Envelope outlet, the well head four-way is provided with cannula inlet port.
3. a kind of horizontal well bore hole screen casing damage testing tubing string according to claim 2, it is characterised in that the liquid circulation
Changing device includes turn of tidal stream device, outer sealed tube, leather cup and unidirectionally sealed, the oil pipe above the turn of tidal stream device upper end connection, and lower end is by connecing
Oil pipe below hoop connection, the turn of tidal stream device is not connected with the oil pipe of top, and the outer sealed tube is arranged on turn of tidal stream device and sleeve pipe
Between, inner clip annular space is formed between outer sealed tube and the turn of tidal stream device, outer clip annular space is formed between outer sealed tube and sleeve pipe, it is described
Outer sealed tube upper end is suspended on well head four-way inwall by hanger, and the turn of tidal stream device opens up the turn of tidal stream hole of radial direction, described self-styled
Outlet, inner clip annular space, turn of tidal stream hole, the oil pipe below turn of tidal stream device are interconnected, and described sleeve pipe entrance is communicated to by outer clip annular space
Oil jacket annular space.
4. a kind of horizontal well bore hole screen casing damage testing tubing string according to claim 3, it is characterised in that the turn of tidal stream device
Leather cup is set unidirectionally to seal between lower end outer wall and outer sealed tube inwall.
5. a kind of horizontal well bore hole screen casing damage testing tubing string according to claim 3 or 4, it is characterised in that the resistance
Flowing packer includes choked flow packer body, fluid resistant seal core, and the fluid resistant seal core retainer plate is in choked flow packer body exterior, resistance
Flow sealed core bottom and baffle ring is set, the fluid resistant seal core packing is in screen casing inwall.
6. a kind of horizontal well bore hole screen casing damage testing tubing string according to claim 5, it is characterised in that the external seal
The length of pipe is greater than the length of screen casing.
7. a kind of horizontal well bore hole screen casing damage testing tubing string according to claim 5, it is characterised in that the resistance of least significant end
Flow packer rear end and plug is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720124957.6U CN206581934U (en) | 2017-02-10 | 2017-02-10 | A kind of horizontal well bore hole screen casing damage testing tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720124957.6U CN206581934U (en) | 2017-02-10 | 2017-02-10 | A kind of horizontal well bore hole screen casing damage testing tubing string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206581934U true CN206581934U (en) | 2017-10-24 |
Family
ID=60092219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720124957.6U Withdrawn - After Issue CN206581934U (en) | 2017-02-10 | 2017-02-10 | A kind of horizontal well bore hole screen casing damage testing tubing string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206581934U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442916A (en) * | 2017-02-10 | 2018-08-24 | 中国石油化工股份有限公司 | Horizontal well bore hole screen casing damage testing tubing string |
| CN110857623A (en) * | 2018-08-21 | 2020-03-03 | 中国石油化工股份有限公司 | Continuous sand washing type sand production detection system and method |
| CN114458209A (en) * | 2020-10-21 | 2022-05-10 | 中国石油化工股份有限公司 | Horizontal well screen pipe detection blockage removal system and method |
-
2017
- 2017-02-10 CN CN201720124957.6U patent/CN206581934U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442916A (en) * | 2017-02-10 | 2018-08-24 | 中国石油化工股份有限公司 | Horizontal well bore hole screen casing damage testing tubing string |
| CN110857623A (en) * | 2018-08-21 | 2020-03-03 | 中国石油化工股份有限公司 | Continuous sand washing type sand production detection system and method |
| CN114458209A (en) * | 2020-10-21 | 2022-05-10 | 中国石油化工股份有限公司 | Horizontal well screen pipe detection blockage removal system and method |
| CN114458209B (en) * | 2020-10-21 | 2024-03-22 | 中国石油化工股份有限公司 | Horizontal well screen pipe detection blocking removal system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171024 Effective date of abandoning: 20230711 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20171024 Effective date of abandoning: 20230711 |