CN206668317U - Sand control pack integrated well head device - Google Patents
Sand control pack integrated well head device Download PDFInfo
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- CN206668317U CN206668317U CN201720377510.XU CN201720377510U CN206668317U CN 206668317 U CN206668317 U CN 206668317U CN 201720377510 U CN201720377510 U CN 201720377510U CN 206668317 U CN206668317 U CN 206668317U
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- well head
- sand control
- control pack
- head device
- pack integrated
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Abstract
Oil-gas mining technical field is the utility model is related to, more particularly to a kind of sand control pack integrated well head device.Sand control pack integrated well head device disclosed in the utility model includes tubing portion and well head setting section, tubing portion is connected in sequence by lifting sub, small four-way, rotary part, downhole tubular column jecket, and the port of small four-way both sides is connected with valve I, valve II respectively；Well head setting section is formed by connecting by base flange, well head big four, and the port of well head big four both sides is connected with sleeve valve I, sleeve valve II respectively.The device can not only realize the integrated construction of squeeze pack, flow pack and backwash well operations, and also achieve not dismantle and lower tubular column is quickly played in the case of well head base flange.
Description
Technical field
Oil-gas mining technical field is the utility model is related to, more particularly to a kind of sand control pack integrated well head device.
Background technology
With loose sand oil accumulation exploitation deeply, sand production increasingly sharpens, and the general high pressure packing of huge discharge is as one
Kind common process is commonly used.And segment the adjustment exploitation of series of strata so that multiple zone well quantity greatly increases, selective sand control technique
Targetedly whole stratum can be carried out distinguishing transformation and sand control and constructed, and ensured between each layer independently of each other, it is just big
Scope is promoted.
At present, the well head of sand control pack operation is fixed well head, installation, dismounting complexity, the big grade one of workload be present
Series of problems.When needing voltage regulator tube line anti-flushing well after sand off, single zone compaction needs upper lifting pipe post to give up, and selective sand control needs
When lift pipe string change layer construction, fixed well head obviously can not meet to require.And there is operation inconvenience and exist in the wellhead assembly
Larger potential safety hazard：First, safety requirements is not met using soft pipeline connection, and needs supporting manifold of ground, installment work
Amount is big, and existing structure can not directly change hard tube line；Secondly, selective sand control is changed in layer construction, needs during lift pipe string to dismount base
Flange, workload is big, time-consuming longer, brings sand card tubing string risk, and potential safety hazard is big.3rd, if occurring backwash in single zone compaction
Obstructed, when needing quick lift pipe string situation, existing shaft collar can not meet to require.
Utility model content
For the above-mentioned technical problem in the presence of prior art, the utility model proposes a kind of integration of sand control pack
Wellhead assembly, it can not only realize the integrated construction of squeeze pack, flow pack and backwash well operations, and also achieve
Lower tubular column is quickly played in the case of not dismantling well head base flange.
Sand control pack integrated well head device of the present utility model, including tubing portion and well head setting section, the pipe
Post part is connected in sequence by lifting sub, small four-way, rotary part, down-hole string, the port point of the small four-way both sides
It is not connected with valve I, valve II；The well head setting section is formed by connecting by base flange, well head big four, and the well head is big
The port of four-way both sides is connected with sleeve valve I, sleeve valve II respectively.
As a kind of improvement of the present utility model, described tubing portion also includes positioning element, and the positioning element is set
It is placed between the rotary part and down-hole string, to adjust the position of the wellhead assembly.
The positioning element is slip pipe nipple or anchor tip.
As another improvement of the present utility model, the rotary part includes swivel joint, in the swivel joint
Chamber is disposed with central tube, thrust ball bearing and baffle ring, and one end of the swivel joint is connected with small four-way, and the rotation connects
Annular space between the other end and central tube of head is sealed by the baffle ring, and the central tube lower end is connected with the positioning element.
The central tube is T-shape hollow tube.
The well head big four inner chamber top is provided with baffle ring.
According to another improvement of the present utility model, the wellhead assembly is additionally provided with seal pressure cap, the seal pressure cap set
It is located on the down-hole string, the seal pressure cap is located above the well head setting section, when needing to fix the tubing portion
When, only need to be by the annular space of the seal pressure cap screw-in down-hole string and well head setting section；During upper lifting pipe post operation, only need by
The seal pressure cap screws out from the annular space of the down-hole string and well head setting section.
Sealing ring is provided with the inside of the seal pressure cap.
Compared with prior art, the utility model has the advantage of by being used cooperatively for control valve, can be achieved extruding
The institutional operation of filling, flow pack and anti-flushing well conversion, it is not necessary to supporting installation manifold of ground, it is not necessary to dismantle pipeline；
By the rotary part for being provided with bearing, it is ensured that the flexibility of weight bearing situations backspin tube post, facilitate packer to give up；It is logical
The setting of seal pressure cap is crossed, realize only need to screw out seal pressure cap in upper lifting pipe post operation well head base flange, without
Need to dismount well head base flange, it is convenient and swift, substantially reduce the risk of sand card tubing string.
Brief description of the drawings
Fig. 1 is sand control pack integrated well head device schematic diagram of the present utility model.
Fig. 2 is the half sectional view of rotary part of the present utility model.
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, be not used for being any limitation as the utility model.
Fig. 1 is sand control pack integrated well head device schematic diagram of the present utility model.Sand control pack integrated well head device,
Including tubing portion and well head setting section, tubing portion by lifting sub 1, small four-way 2, rotary part 5, down-hole string 13 according to
Secondary to be formed by connecting, the port of the small both sides of four-way 2 is connected with valve I 3, valve II 4 respectively；Well head setting section by base flange 8,
Well head big four 12 is formed by connecting, and the port of the both sides of well head big four 12 connects with sleeve valve I 10, sleeve valve II 11 respectively
Connect.Tubing portion also includes positioning element 6, and positioning element 6 is arranged between rotary part 5 and down-hole string 13, positioning element 6
Top is connected with rotary part 5, and its underpart is connected with down-hole string 13, to adjust the position of wellhead assembly, meets operation
Demand.In a preferred embodiment, for positioning element 6 to slide pipe nipple, positioning element 6 can also be anchor tip.
As shown in Fig. 2 rotary part 5 includes swivel joint 51, be disposed with the inner chamber of swivel joint 51 central tube 52,
Thrust ball bearing 53 and baffle ring 54, one end of swivel joint 51 are connected with small four-way 2, the other end and central tube of swivel joint 51
Annular space between 52 is sealed by baffle ring 54, and swivel joint 51, central tube 52, baffle ring 54 form a closed rotatable space, underground
For tubing string 13 in weight bearing situations, under moment of torsion effect, down-hole string 13 drives central tube 52 to rotate, due to thrust ball bearing 53
Effect, realizes down-hole string 13 and rotates, and each part of the top of swivel joint 51 is not followed and gone to, it is ensured that wellhead assembly
Security.In addition, the lower end of central tube 52 is connected with positioning element 6.
In a further preferred embodiment, central tube 52 is T-shape hollow tube, the upper end of central tube 52 and the inner chamber of swivel joint 51
Certain gap be present in top.The inner chamber top of well head big four 12 can also set baffle ring 9, in upper lifting pipe post operation, block 9
The operation of protection, righting is served, prevents the hoop of down-hole string 13 from impacting base, causes damaged in collision.Seal pressure cap 7 is located at well
The top of mouth setting section, when needing to fix tubing portion, the seal pressure cap 7 need to only be screwed in down-hole string 13 and sat with well head
The annular space sealed between part；During upper lifting pipe post operation, only need to by the seal pressure cap 7 from down-hole string 13 and well head setting section it
Between annular space screw out, can be achieved not dismantling and lower tubular column quickly played in the case of well head base flange 8, greatly reduce sand card
The risk of tubing string.The inner side of seal pressure cap 7 is provided with sealing ring, to ensure being brought into close contact for seal pressure cap 7 and down-hole string 13.
The method that institutional operation is carried out using sand control pack integrated well head device will be described according to Fig. 1,2 below,
The operational method mainly includes the following steps that：
Step 1：Being assembled into one wellhead assembly
First, well head setting section and tubing portion are assembled respectively, seal pressure cap 7 are set on down-hole string 13, well
Under the lower going-into-well of lower tubular column 13, annular space that seal pressure cap 13 is screwed between well head setting section and down-hole string 13, so as to by well
Mouth setting section is fixed with tubing portion and completed, and wellhead assembly is completed；
Secondly, valve I 10, valve II 11 are connected with pump liquid car group, waste liquid pool respectively；
Finally, sleeve valve I 10, sleeve valve II 11 are connected with ground with liquid pool, backwash pump truck respectively, it is standby.
Step 2：Carry out squeeze pack construction
Valve I 3 is opened, valve II 4, sleeve valve I 10, sleeve valve II 11 is closed, starts pump liquid car group to be extruded
Filling, sand-laden fluid body flow through valve I 3, small four-way 2, rotary part 5, positioning element 6 and down-hole string 13, eventually enter into oil reservoir,
When being controlled on ground, ground face-pumping sand pressure and pump sand amount is controlled according to stratum geologic parameter, is pumped into when reaching design requirement, completes
Squeeze pack process.
Step 3：Carry out flow pack construction
After squeeze pack construction is completed, continue to keep valve I 3 to open, keep valve II 4, sleeve valve II 11 to be in
Closed mode, opens sleeve valve I 10, and sand-laden fluid body is entered by small four-way 2, rotary part 5, positioning element 6 through down-hole string 13
After entering target zone, annular space of the liquid between well head setting section and down-hole string 13 returns out ground through sleeve valve I 10 after sand fallout
Liquid pool is matched somebody with somebody in face, completes flow pack process, and fluid of the inflow surface with liquid pool can be pumped into well again through pump liquid car group after filtration
Under carry out repeat filling.
Step 4：Carry out anti-flushing well job execution
When needing quick anti-flushing well after extruding and flow pack construction terminate, valve I 3 is first shut off, opens valve II
4, close sleeve valve I 10, open sleeve valve II 11, open anti-flushing well pump truck and carry out anti-flushing well, backwash pump truck is by flushing fluid
Be pumped into annular space between well head setting section and down-hole string 13, by the particulate matters such as the unnecessary gravel in underground, silt particle through down-hole string 13,
Positioning element 6, rotary part 5 and small four-way 2, washed out from valve II 4 to waste liquid pool, until outlet without sand, close valve II 4 and
Sleeve valve II 11.
In a further preferred embodiment, if needed for slicing and filling sand control, upper lifting pipe post is constructed or backwash occur obstructed
During situation, integration operation method should also carry out step 5 upper lifting pipe post operation after step 4 backwash well operations.
Step 5:Upper lifting pipe post operation
First, Unscrew seal pressure cap 7, lifting sub 1 is above carried；Tubing portion and well head setting section are separated,
And tubing portion is lifted to design attitude；
Afterwards, seal pressure cap 7 is once again screwed into the annular space between down-hole string 13 and wellhead sealing part, to fix well head
Device.
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 (8)
1. sand control pack integrated well head device, it is characterised in that：The wellhead assembly includes tubing portion and well head setting section,
The tubing portion is connected in sequence by lifting sub, small four-way, rotary part, down-hole string, the small four-way both sides
Port is connected with valve I, valve II respectively；The well head setting section is formed by connecting by base flange, well head big four, described
The port of well head big four both sides is connected with sleeve valve I, sleeve valve II respectively.
2. sand control pack integrated well head device as claimed in claim 1, it is characterised in that：Described tubing portion also includes
Positioning element, the positioning element are arranged between the rotary part and down-hole string, to adjust the wellhead assembly
Position.
3. sand control pack integrated well head device as claimed in claim 2, it is characterised in that：The positioning element is short to slide
Section or anchor tip.
4. sand control pack integrated well head device as claimed in claim 3, it is characterised in that：The rotary part includes rotation
Joint, is disposed with central tube, thrust ball bearing and baffle ring in the swivel joint inner chamber, one end of the swivel joint with
Small four-way is connected, and the annular space between the other end and central tube of the swivel joint is sealed by the baffle ring, under the central tube
End is connected with the positioning element.
5. sand control pack integrated well head device as claimed in claim 4, it is characterised in that：The central tube is in T-shape
Blank pipe.
6. sand control pack integrated well head device as claimed in claim 4, it is characterised in that：On the well head big four inner chamber
Portion is provided with baffle ring.
7. the sand control pack integrated well head device as described in claim any one of 1-6, it is characterised in that：The wellhead assembly
Seal pressure cap is additionally provided with, the seal pressure cap is set on the down-hole string, and the seal pressure cap is located at the well head and sets portion
Above point, when needing to fix the tubing portion, only the seal pressure cap need to be screwed in the down-hole string and set portion with well head
The annular space divided；During upper lifting pipe post operation, the seal pressure cap need to only be revolved from the annular space of the down-hole string and well head setting section
Go out.
8. sand control pack integrated well head device as claimed in claim 7, it is characterised in that：Set on the inside of the seal pressure cap
There is sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720377510.XU CN206668317U (en) | 2017-04-11 | 2017-04-11 | Sand control pack integrated well head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720377510.XU CN206668317U (en) | 2017-04-11 | 2017-04-11 | Sand control pack integrated well head device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206668317U true CN206668317U (en) | 2017-11-24 |
Family
ID=60380112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720377510.XU Active CN206668317U (en) | 2017-04-11 | 2017-04-11 | Sand control pack integrated well head device |
Country Status (1)
| Country | Link |
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| CN (1) | CN206668317U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691566A (en) * | 2017-04-11 | 2018-10-23 | 中国石油化工股份有限公司 | Sand control pack integrated well head device and operational method |
| CN111236886A (en) * | 2020-02-10 | 2020-06-05 | 山东博赛特石油技术有限公司 | Floating type rotary sliding sand prevention wellhead device and method |
-
2017
- 2017-04-11 CN CN201720377510.XU patent/CN206668317U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691566A (en) * | 2017-04-11 | 2018-10-23 | 中国石油化工股份有限公司 | Sand control pack integrated well head device and operational method |
| CN111236886A (en) * | 2020-02-10 | 2020-06-05 | 山东博赛特石油技术有限公司 | Floating type rotary sliding sand prevention wellhead device and method |
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