CN201738861U - Freezing and temporary blocking device - Google Patents
Freezing and temporary blocking device Download PDFInfo
- Publication number
- CN201738861U CN201738861U CN2010205113380U CN201020511338U CN201738861U CN 201738861 U CN201738861 U CN 201738861U CN 2010205113380 U CN2010205113380 U CN 2010205113380U CN 201020511338 U CN201020511338 U CN 201020511338U CN 201738861 U CN201738861 U CN 201738861U
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- CN
- China
- Prior art keywords
- gel
- gate valve
- temporary blocking
- injection device
- oil
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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.)
- Expired - Fee Related
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Abstract
The utility model relates to a freezing and temporary blocking device belonging to the technical fields of the design and the manufacture of workover equipment with pressure and comprising a gel boosting cylinder, a gel storer, a gel injection device, a high-pressure gel output pipeline and a pressurizing hydraulic cylinder, wherein a gland of the gel storer is connected with a piston rod of the gel boosting cylinder, the lower end of the gland of the gel storer is connected with the gel injection device, and the front end of the gel injection device is connected with the pressurizing hydraulic cylinder; and the utility model solves the problem of unreliable sealing of mechanical blockage adopted for replacing a side gate valve of a well mouth in the prior art, designs a freezing and temporary blocking device for executing the replacement of a gate valve of a well mouth by the annuluses of a mechanical freezing and temporary blocking sleeve pipe and an oil pipe and has the characteristics that the operation with pressure has no pollution to an oil-gas layer and the oil-gas resource and the productive capacity are kept.
Description
Technical field
A kind of freeze temporary blocking device is used for oil gas well band and presses well workover to change the injection of the temporary blocking gel of oil recovery gas production wellhead or well head gate valve, belongs to the design and manufacturing technology field that oil gas well band is pressed workover rig.
Background technology
When the band of oil gas field enforcement oil well or gas well presses well workover to change oil recovery gas production wellhead or the operation of part gate valve, because there is certain pressure the down-hole, can not produce oil on one side or gas, implement workover treatment on one side, for safety is finished workover treatment, must suspend the production of oil gas earlier, carry out workover treatment again, so will block the gas channel that the down-hole leads to ground earlier; The mechanical obstruction mode of former employing, shutoff pipe aperture and annular space stop up pipe aperture and adopt tubing plug simultaneously, need following two above tubing plugs in order to insure, and promptly can not guarantee 100% effective shutoff like this.Annular space does not then have instrument to seal whole annular space, change oil recovery gas recovery well oral-lateral gate valve and can only adopt mechanical obstruction mode Seal Oil tube head bypass neck, because tubing head bypass neck is shorter, it is very unreliable to seal, and once adopts mechanical plug for seal to change oil recovery gas recovery well oral-lateral gate valve generation serious accident.
Summary of the invention
The present invention be directed to the shortcoming of prior art, adopt machinery to inject the mode of refrigerator, designed a kind of the freeze temporary blocking device in annular space and the oil pipe between gel sprue bushing and the oil pipe.
The utility model is achieved in that the utility model comprises gel boosting cylinder 2, gel holder 3, gel injection device 4, high pressure gel export pipeline 7, supercharging fluid cylinder 8 and hydraulic controlling device 1, it is characterized in that: the gland of gel holder 3 is connected with the piston rod of gel boosting cylinder 2, gel holder 3 lower ends are connected with gel injection device 4, and the front end of gel injection device 4 connects supercharging fluid cylinder 8; Hydraulic controlling device 1 is connected with the gel injection device with gel boosting cylinder 2 respectively;
Be connected with between described gel injection device 4 and supercharging fluid cylinder 8 and annotate control gate valve 5, the high pressure gel is recycled into gel injection device 4 when being used to stop 8 work of supercharging fluid cylinder;
Be connected with between described supercharging fluid cylinder 8 and the high pressure gel export pipeline 7 and annotate control gate valve 6;
Described high pressure gel export pipeline 7 front ends are connected with and inject gate valve 9, the injection and the control well inner fluid of control gel when being used for operation, and the rear end is connected with annotates control gate valve 6;
Annotate control gate valve 5 and annotate the unlatching of controlling gate valve 6 or close, implement control and driving by hydraulic controlling device 1, stored gel injects boost fluid cylinder 8 in the gel holder 3 under the effect of gel boosting cylinder 2 and gel injection device 4, after supercharging fluid cylinder 8 is filled with gel, close notes control gate valve 5 earlier by hydraulic controlling device 1 control, open then and annotate control gate valve 6 and inject gate valve 9, the primer fluid dynamic control device 1 then, and the gel in the supercharging fluid cylinder 8 is annotated the position that the people needs the freeze temporary blocking sealing by glue export pipeline 7.
The beneficial effects of the utility model and advantage are: the gel injection work of using the utility model to implement, can simultaneously gel be injected between sleeve pipe and the oil pipe in the annular space and pipe aperture, through freezing, just can be with sleeve pipe and oil pipe annular space and temporary blocking up of pipe aperture while, just can implement to change more changing jobs of any one gate valve on the oil recovery gas production wellhead then, after treating that gate valve replacing operation is finished, remove freeze box and refrigerant, along with the continuous rising of environment temperature, the gel of injection just melts naturally can realize de-plugging; The utility model can ensure safety when implementing freeze temporary blocking replacing oil recovery gas production wellhead gate valve, has the advantages that Operating Pressure is pollution-free to oil-gas Layer, keep petroleum resources and production capacity.
Description of drawings
Fig. 1 is the utility model syndeton schematic diagram.
Fig. 2 is the utility model field operation connection layout.
The specific embodiment
Provide embodiment of the present utility model below in conjunction with accompanying drawing.
Embodiment 1: the process of changing well head gate valve 17 is as follows
When changing the well head gate valve 17 on wellhead assembly 12 left sides, will inject gate valve 9 earlier and be connected, freeze box 16 will be installed on the outside that needs to implement the temporarily stifled position of cooling, implement action according to following steps with well head gate valve 17 as needs:
(1) closes injection gate valve 9, open well head gate valve 17;
(2) close notes control gate valve 6, open and annotate control gate valve 5;
(3) the primer fluid dynamic control device 1, by the control of surging, and the gel injection supercharging fluid cylinder 8 that in gel is annotated under the effect push away cylinder 2 and gel injection device 4 gel holder 3, stores;
(4) after supercharging fluid cylinder 8 is filled with gel, close and annotate control gate valve 5, to open to annotate and control gate valve 6 and inject gate valve 9, operation hydraulic controlling device 1 passes through the annular space that gel export pipeline 7 is annotated between people's sleeve pipe 15 and the oil pipe 14 with the gel in the supercharging fluid cylinder 8;
(5) after the amount of the annular space gel between sprue bushing 15 and the oil pipe 14 reaches design height, close and inject gate valve 9, use the gel of annular space between 16 pairs of sleeve pipes 15 of freeze box and the oil pipe 14 to carry out freezing;
(6) after freezing work reaches the time of setting, just can reach predetermined sealing load, just can realize being suspended on the shutoff of passage between down-hole casing 15 on the casing seat 13 and the oil pipe 14, change gate valve 17 then;
Embodiment 2: the process of changing well head gate valve 10 is as follows
As changing the well head gate valve 10 of wellhead assembly 12 upper ends, then reach design height at the gel of finishing annular space between above-mentioned sprue bushing 15 and the oil pipe 14, and after reaching the cooling time of setting, high pressure gel export pipeline 7 is connected with well head gate valve 11 by injecting gate valve 9, implements action according to following steps again:
(1) closes well head gate valve 11 earlier, open well head gate valve 10;
(2) close notes control gate valve 6, open and annotate control gate valve 5;
(3) the primer fluid dynamic control device 1, by the control of surging, and the gel injection supercharging fluid cylinder 8 that in gel is annotated under the effect push away cylinder 2 and gel injection device 4 gel holder 3, stores;
(4) after supercharging fluid cylinder 8 is filled with gel, close and annotate control gate valve 5, open and annotate control gate valve 6 and inject gate valve 9, operation hydraulic controlling device 1 is annotated the gel in the supercharging fluid cylinder 8 in people's oil pipe 14 by glue export pipeline 7;
(5) after the gel in injecting oil pipe 14 reaches design height, close well head gate valve 11, be suspended on 16 pairs of freeze box that annular space and oil pipe 14 interior gels carry out freezing between sleeve pipe 15 on the casing seat 13 and the oil pipe 14;
(6) freezing reach setting-up time after, just can reach predetermined sealing load, so just can realize the shutoff of down-hole casing 15 and oil pipe 14 annular spaces and oil pipe passage, then just can be to well head gate valve 10 or well head gate valve 17 or other oil recovery gas production wellhead enforcement replacing construction.
Claims (4)
1. freeze temporary blocking device, comprise gel boosting cylinder, gel holder, gel injection device, high pressure gel export pipeline, supercharging fluid cylinder and hydraulic controlling device, it is characterized in that: the gland of gel holder is connected with the piston rod of gel boosting cylinder, gel holder lower end is connected with the gel injection device, and the front end of gel injection device connects the supercharging fluid cylinder; Hydraulic controlling device is connected with the gel injection device with gel boosting cylinder respectively.
2. freeze temporary blocking device according to claim 1 is characterized in that: be connected with between described gel injection device and supercharging fluid cylinder and annotate the control gate valve.
3. freeze temporary blocking device according to claim 1 is characterized in that: be connected with between described supercharging fluid cylinder and the high pressure gel export pipeline and annotate the control gate valve.
4. freeze temporary blocking device according to claim 1 is characterized in that: described high pressure gel export pipeline front end is connected with the injection gate valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205113380U CN201738861U (en) | 2010-08-31 | 2010-08-31 | Freezing and temporary blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205113380U CN201738861U (en) | 2010-08-31 | 2010-08-31 | Freezing and temporary blocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201738861U true CN201738861U (en) | 2011-02-09 |
Family
ID=43554139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205113380U Expired - Fee Related CN201738861U (en) | 2010-08-31 | 2010-08-31 | Freezing and temporary blocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201738861U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909208A (en) * | 2016-05-26 | 2016-08-31 | 中国农业大学 | Colloid conveying system for freezing temporary plugging of oil field |
| CN107642343A (en) * | 2017-09-29 | 2018-01-30 | 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 kind of Oil/gas Well freezing bridging plug is with pressure to change valve construction technology |
| CN111636846A (en) * | 2020-04-21 | 2020-09-08 | 中国海洋石油集团有限公司 | Pressure wellhead plugging device |
| CN111997547A (en) * | 2020-08-04 | 2020-11-27 | 中国石油天然气集团有限公司 | Construction method for replacing valve of liquid nitrogen freezing bridge plug under pressure |
| CN117646614A (en) * | 2024-01-29 | 2024-03-05 | 中国石油集团川庆钻探工程有限公司 | Freezing temporary plugging valve replacing device and method |
-
2010
- 2010-08-31 CN CN2010205113380U patent/CN201738861U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909208A (en) * | 2016-05-26 | 2016-08-31 | 中国农业大学 | Colloid conveying system for freezing temporary plugging of oil field |
| CN107642343A (en) * | 2017-09-29 | 2018-01-30 | 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 kind of Oil/gas Well freezing bridging plug is with pressure to change valve construction technology |
| CN111636846A (en) * | 2020-04-21 | 2020-09-08 | 中国海洋石油集团有限公司 | Pressure wellhead plugging device |
| CN111997547A (en) * | 2020-08-04 | 2020-11-27 | 中国石油天然气集团有限公司 | Construction method for replacing valve of liquid nitrogen freezing bridge plug under pressure |
| CN117646614A (en) * | 2024-01-29 | 2024-03-05 | 中国石油集团川庆钻探工程有限公司 | Freezing temporary plugging valve replacing device and method |
| CN117646614B (en) * | 2024-01-29 | 2024-04-05 | 中国石油集团川庆钻探工程有限公司 | Freezing temporary plugging valve replacing device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20190831 |