CN203702119U - Rated load switch applied to fracture acidizing process pipe column of oil-gas well - Google Patents
Rated load switch applied to fracture acidizing process pipe column of oil-gas well Download PDFInfo
- Publication number
- CN203702119U CN203702119U CN201420001266.3U CN201420001266U CN203702119U CN 203702119 U CN203702119 U CN 203702119U CN 201420001266 U CN201420001266 U CN 201420001266U CN 203702119 U CN203702119 U CN 203702119U
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- load switch
- process pipe
- lower contact
- rated load
- utility
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000020477 pH reduction Effects 0.000 claims description 7
- 238000010008 shearing Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a rated load switch applied to a fracture acidizing process pipe column of an oil-gas well which is aimed at solving the problem that a present process pipe column is taken out smoothly with great difficulty in a well. The rated load switch comprises an upper joint, a lower joint and a limiting mechanism connected with the upper joint. The limiting mechanism is detachably connected with the lower joint. The rated load switch applied to the fracture acidizing process pipe column of the oil-gas well has following beneficial effects: the rated load switch is reasonable in structure and ingenious in design and is convenient to use; the process pipe column in the well is smoothly taken out after construction; and therefore the rated load switch is of great utility value and promotional value.
Description
Technical field
The utility model relates to a kind of volume load switch that is applied to well fracturing acidification technique tubing string.
Background technology
Along with going deep into of oil field development, stratum becomes increasingly complex, and interlayer difference is large, and the quantity of pressure break, acidifying layering also increases gradually, and layering measure process pipe string also becomes and becomes increasingly complex.Due to the complexity of process pipe string, the taking-up meeting in tubing string later stage is along with sand buries or the impact of the factors such as packer permanent set and become more and more difficult, and especially, aspect high angle hole and horizontal well, this problem is more outstanding.
Conventional process pipe string adopts layering sliding sleeve to add the form of structure of packer, ball seat conventionally, this kind of mode is because the ball seat adopting is overall structure, can not be split, thereby function singleness, itself and the effect of only just having played construction in layer that coordinates of layering sliding sleeve do not play the effect that helps and promote in the taking-up process of later stage process pipe string.In the time that needs take out tubing string, need all subsidiary instrument in tubing string is all loosening, and then utilize sizable upper lifting force by disposable process pipe string taking-up, operational risk is high, difficulty is large.And, if tubing string is long, in taking-up process, also can easily there is blocked portion phenomenon, and while running into this situation, just need many-sided adjustment, first make tubing string and subsidiary instrument thereof all loosening, and then apply larger upper lifting force and take out tubing string, this not only takes time and effort, and takes out poor effect.Therefore, existing taking-up mode is difficult to make process pipe string to take out smoothly in well.
Utility model content
The purpose of this utility model is to provide a kind of volume load switch that is applied to well fracturing acidification technique tubing string, mainly solves existing process pipe string and in well, is difficult to the problem of taking out smoothly.
To achieve these goals, the technical solution adopted in the utility model is as follows:
The volume load switch that is applied to well fracturing acidification technique tubing string, comprises top connection, lower contact, and the position-limit mechanism being connected with top connection; Described position-limit mechanism and lower contact removably connect.
Specifically, described position-limit mechanism comprises the adapter sleeve being connected with top connection, outer wall is flexibly connected with this adapter sleeve and falls into central tube wherein for the sliding sleeve fuse of process pipe string, and one end is connected in adapter sleeve, the other end and clamps under central tube outer wall supports the bullet pawl of lower contact; Described lower contact and adapter sleeve removably connect.
Further, described lower contact is connected with adapter sleeve by shear pin.
As preferably, the shearing force size of described shear pin is 5～50T.
Compared with prior art, the utlity model has following beneficial effect:
(1) the utility model reasonable in design, is skillfully constructed.
(2) the utility model can replace conventional ball seat to use aspect process pipe string, it not only can coordinate layering sliding sleeve to realize construction in layer, and utilize its detachable characteristic, the form that makes process pipe string can be divided into multistage is taken out one by one, thereby significantly reduce the taking-up difficulty of process pipe string, guarantee that process pipe string can take out smoothly in well, and taking-up mode of the present utility model is taken out tubing string after all subsidiary instrument in tubing string is all become flexible again, thereby operating procedure is very succinct, efficiency is quite high, the utility model has solved the defect of prior art, there is substantial feature and progress.
(3) the utility model is practical, easily manufactured, and it is suitable for applying aspect Oil/gas Well, particularly process pipe string.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that the utility model is installed to the structural representation in process pipe string.
Fig. 3 is that sliding sleeve fuse falls into the schematic diagram after central tube.
Fig. 4 is that the utility model is isolated the structural representation after lower contact.
Wherein, the component name that Reference numeral is corresponding is called:
1-layering sliding sleeve, 2-sliding sleeve fuse, 3-packer, 4-top connection, 5-central tube, 6-bullet pawl, 7-adapter sleeve, 8-lower contact, 9-shear pin.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, and embodiment of the present utility model includes but not limited to the following example.
Embodiment
As shown in Figure 1, the utility model is mainly used in taking-up aspect in process pipe string construction in layer and well, and it comprises top connection 4, position-limit mechanism and lower contact 8.Described position-limit mechanism comprises the adapter sleeve 7 being connected with top connection 4, the central tube 5 that outer wall is flexibly connected with this adapter sleeve 7, and one end is connected in adapter sleeve 7, the other end and clamps under central tube outer wall supports the bullet pawl 6 of lower contact 8; Described lower contact 8 is connected by shear pin 9 with adapter sleeve 7.
The utility model is special in the use of process pipe string designs, and below by use procedure of the present utility model, it is described in detail.
The utility model requires to arrange multiple according to the classification of process pipe string, in general, in process pipe string, include layering sliding sleeve 1, layering sliding sleeve 1 is provided with multiple, and by the first order, the second level ... N level is arranged in order, and between adjacent two stage layered sliding sleeves, is equipped with packer 3, and the utility model is connected between upper level packer and next stage layering sliding sleeve, the like, as shown in Figure 2.
In each layering sliding sleeve 1, be equipped with sliding sleeve fuse 2.Existing situation is that the sliding sleeve fuse 2 in layering sliding sleeve 1 can drop in ball seat through packer 3 in the time of construction, and in the utility model application aspect, this sliding sleeve fuse 2 can drop into central tube 5 inside through packer 3 in the time of construction, as shown in Figure 3, now, under sliding sleeve fuse 2 pressure-actings, central tube 5 can move to the direction of lower contact connection next stage layering sliding sleeve, lose support thereby cause playing one end that pawl 6 clamps lower contact 8, then reserve the space of inside contraction, and tentatively unclamp lower contact 8.Then, upper lifting pipe post, so that lower contact 8 separates, lower contact 8 final outcomes separate, except needs play pawl 6 is totally released it, also need to be decided by the shearing force of shear pin 9, the upper lifting force that top connection 4 is applied need to be not less than the shearing force of shear pin 9, to break shear pin 9, so can successfully separate lower contact 8.According to the physical condition of site operation, as preferably, in the present embodiment, the shearing force size of described shear pin 9 is 5～50T.
Top connection 4 is being applied after the upper lifting force that is not less than shear pin 9 shearing forces, play pawl 6 and continue inwardly to shrink and be totally released lower contact 8 under top connection 4 and adapter sleeve 7 drives, shear pin 9 is pulled off simultaneously, thereby cause lower contact 8 to depart from, then upper lifting pipe post, first order volume load switch top tubing string part is taken out, and the utility model is isolated structure after lower contact 8 as shown in Figure 4.First order volume load switch top tubing string part is lowered to fishing tool after taking out, and then in the same way successively by substratification sliding sleeve, third level layering sliding sleeve ... N stage layered sliding sleeve takes out one by one.
The utility model adopts position-limit mechanism to realize the separation of adjacent two stage layered sliding sleeves in process pipe string, it utilizes shear pin 9 to connect lower contact 8, and before having utilized dexterously sliding sleeve fuse 2 to fall into, after pressure change, realize and play the degree of tightness of pawl 6 to lower contact 8, can be the same with ball seat in the time of clamping lower contact 8, guarantee carrying out smoothly of construction in layer, and in the time unclamping, can reduce the load forces that tubing string takes out, no matter the utility model is to lower contact clamping or unclamps, it all can guarantee that process pipe string compressive strength is constant, and the utility model can be selected according to construction condition the shear pin of relevant shear power, thereby on meeting to the full extent, propose the requirement of load, and process pipe string can be taken out smoothly in well.
In addition, in to well, process pipe string is applied with while carrying load, if whole process pipe string is more loosening, without group card phenomenon, tubing string can disposable whole taking-ups, if carry after load in the maximum that uses well head to provide, there is not yet loosening sign in tubing string, can not disposable whole taking-ups, the lower contact in the utility model 8 and the part on it can be separated, after separately, in lower contact 8, the tubing string of part shortens relatively, thereby take out possibility be also greatly improved, there is hardly any taking-up difficulty; After top tubing string takes out, then from being newly lowered to fishing tool, the tubing string part being connected with lower contact is taken out, repeat successively, until tubing string in well is all taken out.
Those skilled in the art, according to above-described embodiment and in conjunction with after prior art and common practise, can know the technical scheme that the utility model is complete beyond all doubtly.And what deserves to be explained is; above-described embodiment is only preferably a kind of implementation of the utility model; should be in order to not limit protection domain of the present utility model; in every case any change and polishing of having no essential meaning of having done under body design thought of the present utility model and spirit; or be equal to displacement; its technical problem solving is consistent with the utility model in fact, also should be in protection domain of the present utility model.
Claims (3)
1. the volume load switch that is applied to well fracturing acidification technique tubing string, is characterized in that, comprises top connection (4), lower contact (8), and the position-limit mechanism being connected with top connection (4); Described position-limit mechanism and lower contact (8) removably connect; Described position-limit mechanism comprises the adapter sleeve (7) being connected with top connection (4), outer wall is flexibly connected with this adapter sleeve (7) and falls into central tube (5) wherein for the sliding sleeve fuse of process pipe string, and one end is connected in adapter sleeve (7), the other end and clamps under central tube outer wall supports the bullet pawl (6) of lower contact (8); Described lower contact (8) removably connects with adapter sleeve (7).
2. the volume load switch that is applied to well fracturing acidification technique tubing string according to claim 1, is characterized in that, described lower contact (8) is connected with adapter sleeve (7) by shear pin (9).
3. the volume load switch that is applied to well fracturing acidification technique tubing string according to claim 2, is characterized in that, the shearing force size of described shear pin (9) is 5～50T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420001266.3U CN203702119U (en) | 2014-01-02 | 2014-01-02 | Rated load switch applied to fracture acidizing process pipe column of oil-gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420001266.3U CN203702119U (en) | 2014-01-02 | 2014-01-02 | Rated load switch applied to fracture acidizing process pipe column of oil-gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702119U true CN203702119U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420001266.3U Expired - Lifetime CN203702119U (en) | 2014-01-02 | 2014-01-02 | Rated load switch applied to fracture acidizing process pipe column of oil-gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003227A (en) * | 2015-08-03 | 2015-10-28 | 中国石油集团川庆钻探工程有限公司 | Separable type hydraumatic sliding sleeve for oil gas well |
-
2014
- 2014-01-02 CN CN201420001266.3U patent/CN203702119U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003227A (en) * | 2015-08-03 | 2015-10-28 | 中国石油集团川庆钻探工程有限公司 | Separable type hydraumatic sliding sleeve for oil gas well |
| CN105003227B (en) * | 2015-08-03 | 2018-05-25 | 中国石油集团川庆钻探工程有限公司 | The detachable hydraulic sliding sleeve of oil/gas well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 618300 Guanghan, Sichuan, China Town, small town, Fenghuang Village, the association of the three Patentee after: SICHUAN WEWODON CHEMICAL CO.,LTD. Address before: 618300 Guanghan, Sichuan, China Town, small town, Fenghuang Village, the association of the three Patentee before: SICHUAN WELDON CHEMICALS CO.,LTD. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 618000 Community 3, Fenghuang Village, Xiaohan Town, Guanghan City, Deyang City, Sichuan Province Patentee after: Sichuan Weiwodun Petroleum Technology Co.,Ltd. Address before: 618300 group 3, Fenghuang village, Xiaohan Town, Guanghan City, Deyang City, Sichuan Province Patentee before: SICHUAN WEWODON CHEMICAL CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |