CN107165587A - A kind of floating coupling device and sleeve pipe pay-off method - Google Patents
A kind of floating coupling device and sleeve pipe pay-off method Download PDFInfo
- Publication number
- CN107165587A CN107165587A CN201710462573.XA CN201710462573A CN107165587A CN 107165587 A CN107165587 A CN 107165587A CN 201710462573 A CN201710462573 A CN 201710462573A CN 107165587 A CN107165587 A CN 107165587A
- Authority
- CN
- China
- Prior art keywords
- blind plate
- coupling device
- soluble
- floating coupling
- sleeve pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007667 floating Methods 0.000 title claims abstract description 41
- 230000008878 coupling Effects 0.000 title claims abstract description 35
- 238000010168 coupling process Methods 0.000 title claims abstract description 35
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000005553 drilling Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 230000006378 damage Effects 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 3
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000002195 soluble material Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- DFIYZNMDLLCTMX-UHFFFAOYSA-N gadolinium magnesium Chemical compound [Mg].[Gd] DFIYZNMDLLCTMX-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000006166 lysate Substances 0.000 description 1
- MIOQWPPQVGUZFD-UHFFFAOYSA-N magnesium yttrium Chemical compound [Mg].[Y] MIOQWPPQVGUZFD-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
Abstract
The present invention has supplied a kind of floating coupling device and sleeve pipe pay-off method, and the device includes housing, and the housing central section is provided with pressure cap and soluble blind plate, and the pressure cap is hollow structure, and the lower surface of the pressure cap connects with soluble blind plate.This floating coupling device that the present invention is provided, existing internal shift sleeve structure is replaced using soluble blind plate structure, simple in construction, removed without boring, sleeve pipe smooth tripping in can be achieved, it is to avoid block the risk of rear end float collar float plug circulation port, follow-up cementing operation is not influenceed.
Description
Technical field
The invention belongs to oil development cementing tool technical field, and in particular to a kind of floating coupling device and sleeve pipe decentralization
Method.
Background technology
Extended reach well is due to horizontal segment length, and mill resistance is big during setting of casing, and sleeve pipe is often resulted in not using conventional Casing running technology
Can smoothly under in place, bring difficulty to well cementing operation, it is difficult to solve extended horizontal well sleeve pipe using floating Casing running technology
The problem of with tripping in.
However, existing floating coupling is complicated due to internal shift sleeve structure, closing opening action is more, after sleeve pipe enters well
After internal structure comes off, easily it is detained sleeve pipe pipe string top, it is difficult to enter shaft bottom, the circulation of rear end float collar float plug is blocked while existing
The risk in hole, causes later stage cementing operation operation not carry out, and then influences cementing quality.
The content of the invention
The purpose of the present invention is to overcome the above-mentioned problems in the prior art, floating coupling is had simple to operate, peace
Quan Xinggao, without bore remove, do not influence subsequent construction.
To achieve these goals, the technical scheme that the present invention is provided is as follows：
A kind of floating coupling device, including housing, the housing central section is provided with pressure cap and soluble blind plate, and the pressure cap is hollow
Structure, the lower surface of the pressure cap connects with soluble blind plate.
The bottom of the soluble blind plate is close provided with what is matched with soluble blind plate taper surface in taper surface, the housing
Seal the conical surface.
The lower surface of the soluble blind plate is provided with the reserved structure of blind plate destruction.
The pressure cap is provided with pilot hole, and the pressure cap is connected through a screw thread with housing.
The soluble blind plate material is by the material composition of following percentage by weight, gadolinium 8-11%, yttrium 3-5%, aluminium 0.6-1%,
Zinc 0.5-1.5%, remaining is magnesium, and the total weight percent of impurity is less than 0 .01%.
Present invention also offers a kind of sleeve pipe pay-off method, floating coupling device, including setting of casing are provided with casing string
When, the floating coupling device being connected on casing string by soluble blind plate by casing string be divided into above and below two parts, floating coupling
Air is full of in casing string below device, the buoyancy of generation makes bottom bunch tube be in floating state during lower pipe sleeve,
Reduce and drilling fluid is full of in casing string more than resistance during setting of casing, floating coupling device, add and casing string is pushed into
Pressure in well, realizes the smooth tripping in of sleeve pipe；Sleeve pipe enters after well, and well head is pumped into the pressurization of drilling circulation liquid, and is followed in drilling well
KCl solution is added in ring liquid, the regular hour is circulated, soluble blind plate dissolving is treated, you can carry out follow-up cementing operation.
The mass concentration of the KCl solution is 5%-15%.
The beneficial effects of the invention are as follows：
This floating coupling device that the present invention is provided, existing internal shift sleeve structure, knot are replaced using soluble blind plate structure
Structure is simple, is removed without boring, the smooth tripping in of sleeve pipe can be achieved, it is to avoid blocks the risk of rear end float collar float plug circulation port, does not influence
Follow-up cementing operation.
It is described in further details below in conjunction with accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is use principle schematic diagram of the present invention；
Fig. 3 is shell structure schematic diagram；
Fig. 4 is pressure cap structural representation；
Fig. 5 is blind plate structure schematic diagram.
In figure：1st, housing；2nd, pressure cap；3rd, soluble blind plate；4th, taper pipe thread；5th, sealing cone；6th, pilot hole；7th, taper
Face；8th, slot；9th, sleeve pipe pipe string.
Embodiment
Embodiment 1：
A kind of floating coupling device as shown in Figure 1, including housing 1 are present embodiments provided, the middle part of housing 1 is provided with pressure cap
2 be hollow structure with soluble blind plate 3, the pressure cap 2, and the lower surface of the pressure cap 2 connects with soluble blind plate 3.
This floating coupling device that the present embodiment is provided, simplifies shift sleeve structure inside tradition floating coupling, using solvable
Property blind plate 3, as shown in Fig. 2 during setting of casing, the sleeve pipe below temporary barrier, floating coupling device is constituted in sleeve pipe
It is full of in post in air, the casing string of the above and is full of drilling fluid.Which adds the following part tubular post of floating coupling device
Buoyancy, realize that bottom bunch tube is in floating state during lower pipe sleeve, reduce resistance during setting of casing, and due to
Drilling fluid is filled with the casing string of floating coupling above section, so that pressure casing string being pushed into well is added, it is real
The smooth tripping in of existing sleeve pipe.
Sleeve pipe enters after well, and being pumped into circulation drilling fluid by well head pressurizes, and circulates the regular hour, soluble blind plate 3 is in circulation
Largely dissolved under liquid effects, you can carry out subsequent construction.
Embodiment 2：
On the basis of embodiment 1, a kind of floating coupling device is present embodiments provided, the bottom of the soluble blind plate 3 is
Provided with the sealing cone 5 matched with the soluble taper surface 7 of blind plate 3 in taper surface 7, the housing 1.Taper surface 7 is close with housing 1
The envelope conical surface 5 is connected, and plays a part of sealing liquid.
Wherein, as shown in figure 3, housing 1 is hollow structure, two ends are machined with outer taper pipe thread 4 in same specification, and inside adds
Work regular screw threads and sealing cone 5, two ends screw thread are connected with corresponding specification sleeve pipe pipe string 9 respectively, internal regular screw threads structure with
Pressure cap 2 is connected, and plays compression blind plate effect, and sealing cone 5 is connected with blind plate, plays sealing liquid effects.
In the present embodiment, the lower surface of the soluble blind plate 3 is provided with the reserved structure of blind plate destruction.As shown in figure 5, blind
The reserved structure of plate destruction is fluting 8, and the later stage is directly broken for little particle after its setting pressure is pressurized above, does not influence subsequently to apply
Work.
The pressure cap 2 is provided with pilot hole 6, and the pressure cap 2 is connected through a screw thread with housing 1.As shown in figure 4, pressure cap 2 with
Housing 1 is connected through a screw thread, and is played fixed pressure cap 2 and is acted on, and the structure of pilot hole 6 is thread up device, by tightening in frock
Press cap 2.
Embodiment 3：
On the basis of embodiment 1, present embodiments provide a kind of floating coupling device, the soluble material of blind plate 3 by with
The material composition of lower percentage by weight, gadolinium 8-11%, yttrium 3-5%, aluminium 0.6-1%, zinc 0.5-1.5%, remaining is magnesium, the gross weight of impurity
Measure percentage and be less than 0 .01%.
The manufacturing process of soluble blind plate 3 is as follows：
Pretreatment：Magnesium, magnesium gadolinium intermediate alloy, magnesium yttrium intermediate alloy, aluminium, zinc are weighed after calculating, a component is met above-mentioned weight
Percentage, is preheated afterwards, and preheating temperature is 200 DEG C, 8 hours time；
Smelting and pouring：Pretreated raw material are uniformly mixed, melting；Using the covering of JDMF covertures, refining agent RJ6 refinings
Poured into a mould after processing, pouring temperature is 710 ~ 730 DEG C, obtains ingot casting；
Homogenization heat treatment：12 ~ 20 hours are incubated at 500 ~ 540 DEG C to ingot casting；
Thermal deformation is processed：Thermal deformation processing is carried out at 350 ~ 450 DEG C to the ingot casting, forging or section bar is obtained；
Aging strengthening model：50 ~ 100 hours are incubated at 150 ~ 200 DEG C to the forging or section bar.
The soluble blind plate 3 that the present embodiment is provided, is possessing higher-strength（Mechanical property can reach Rm>=360MPa,
Rp0 .2The .0% of >=260MPa, A >=2.）While, can occur controllable reaction with KCl solution.
Embodiment 4：
On the basis of previous embodiment, a kind of sleeve pipe pay-off method is present embodiments provided, is connect on casing string provided with floating
Device is bound round, including during setting of casing, casing string is divided into by the floating coupling device being connected on casing string by soluble blind plate 3
Air is full of in casing string below lower two parts, floating coupling device, the buoyancy of generation makes bottom bunch tube in lower pipe sleeve mistake
Floating state is in journey, reduces and drilling fluid is full of in casing string more than resistance during setting of casing, floating coupling device, is increased
Add pressure casing string being pushed into well, realize the smooth tripping in of sleeve pipe；Sleeve pipe enters after well, and well head is pumped into drilling circulation liquid
Pressurization, and KCl solution is added in drilling circulation liquid, the regular hour is circulated, treats that soluble blind plate 3 dissolves, you can after progress
Continuous cementing operation.
Wherein, the mass concentration of the KCl solution is 5%-15%.
The present invention is by simplifying shift sleeve structure inside traditional floating coupling, using the soluble material of blind plate 3 and supporting development
Special lysate（KCl solution）, make the floating coupling have it is simple to operate, safe, without bore remove, do not influence subsequent construction
Etc. function, it is adaptable to which the oil gas horizontal well and extended reach well of long horizontal sections are used.
The part and structure that above example is not described in detail belong to the well-known components and common structure or conventional of the industry
Means, are not described one by one here.
It is exemplified as above be only to the present invention for example, do not constitute the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (7)
1. a kind of floating coupling device, it is characterised in that：Including housing（1）, the housing（1）Middle part is provided with pressure cap（2）With can
Dissolubility blind plate（3）, the pressure cap（2）For hollow structure, the pressure cap（2）Lower surface and soluble blind plate（3）Connect.
2. a kind of floating coupling device according to claim 1, it is characterised in that：The soluble blind plate（3）Bottom
For taper surface（7）, the housing（1）It is interior to be provided with and soluble blind plate（3）Taper surface（7）The sealing cone of matching（5）.
3. a kind of floating coupling device according to claim 1, it is characterised in that：The soluble blind plate（3）Following table
Face is provided with the reserved structure of blind plate destruction.
4. a kind of floating coupling device according to claim 1, it is characterised in that：The pressure cap（2）It is provided with pilot hole
（6）, the pressure cap（2）With housing（1）It is connected through a screw thread.
5. a kind of floating coupling device according to claim 1, it is characterised in that：The material of soluble blind plate 3 by with
The material composition of lower percentage by weight, gadolinium 8-11%, yttrium 3-5%, aluminium 0.6-1%, zinc 0.5-1.5%, remaining is magnesium, the gross weight of impurity
Measure percentage and be less than 0 .01%.
6. a kind of sleeve pipe pay-off method, provided with the floating coupling device described in claim any one of 1-5 on casing string, it is special
Levy and be：During including setting of casing, the floating coupling device being connected on casing string passes through soluble blind plate（3）Casing string is divided into
Air is full of in casing string below two parts up and down, floating coupling device, the buoyancy of generation makes bottom bunch tube in lower pipe sleeve
During be in floating state, reduce and drilling fluid be full of in more than resistance during setting of casing, floating coupling device casing string,
Pressure casing string being pushed into well is added, the smooth tripping in of sleeve pipe is realized；Sleeve pipe enters after well, and well head is pumped into drilling circulation
Liquid pressurizes, and adds KCl solution in drilling circulation liquid, circulates the regular hour, treats soluble blind plate（3）Dissolving, you can enter
The follow-up cementing operation of row.
7. a kind of sleeve pipe pay-off method according to claim 6, it is characterised in that：The mass concentration of the KCl solution is
5%-15%。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710462573.XA CN107165587B (en) | 2017-06-19 | 2017-06-19 | Floating coupling device and casing running method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710462573.XA CN107165587B (en) | 2017-06-19 | 2017-06-19 | Floating coupling device and casing running method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107165587A true CN107165587A (en) | 2017-09-15 |
| CN107165587B CN107165587B (en) | 2023-11-03 |
Family
ID=59820309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710462573.XA Active CN107165587B (en) | 2017-06-19 | 2017-06-19 | Floating coupling device and casing running method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107165587B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374530A (en) * | 2019-07-16 | 2019-10-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A method of increasing tubing string depth of setting by changing tube fluid density |
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| Publication number | Publication date |
|---|---|
| CN107165587B (en) | 2023-11-03 |
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