CN204703847U - Downhole safety valve system - Google Patents
Downhole safety valve system Download PDFInfo
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- CN204703847U CN204703847U CN201520316699.2U CN201520316699U CN204703847U CN 204703847 U CN204703847 U CN 204703847U CN 201520316699 U CN201520316699 U CN 201520316699U CN 204703847 U CN204703847 U CN 204703847U
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Abstract
The utility model embodiment provides a kind of downhole safety valve system, and this downhole safety valve system comprises: hydraulic oil container, for holding hydraulic oil; The inlet of hydraulic oil supercharging device and hydraulic oil container are by the first pipeline connection, and the liquid outlet of hydraulic oil supercharging device and storm valve are by the second pipeline connection; Hydraulic oil supercharging device is used for when storm valve opened by needs, to the hydraulic oil supercharging in the second pipeline; One end of drain line and the second pipeline connection, the other end is used for exudate force feed; Linkage valve, is arranged on drain line, closes during hydraulic oil supercharging in the second pipeline at hydraulic oil supercharging device, opens during hydraulic oil step-down in the second pipeline.The downhole safety valve system that the utility model provides, by transforming storm valve control loop, eliminate sealing to lose efficacy the potential safety hazard brought, avoid workover treatment, save the high expense of to carry out workover treatment because of storm valve seal failure and producing.
Description
Technical field
The utility model embodiment relates to oil, natural gas extraction technical field, particularly relates to a kind of downhole safety valve system.
Background technology
Storm valve is a kind of safety means providing downhole closing, can realize long-range downhole closing when well head is in an emergency, thus provides powerful guarantee for the safety in production of high-pressure oil-gas well.Downhole safety valve system is made up of storm valve, control pipeline and ground control system.The storm valve that domestic high-pressure gas well is conventional belongs to flapper-type safety valve, for at below ground closing well, it is a kind of normally close valve, this kind of storm valve is communicated with well wellbore, opened by hydraulic control pressure, before hydraulic control lines pressure is closed, stay open state, hydraulic control pressure operates this valve by control pipeline from a place transmission of pressure far away always.In general, storm valve comprises: valve body, flap, spring, flow duct, piston and hydraulic control lines entrance, wherein, flow duct is connected with piston, spring fitting is in flow duct, and hydraulic control lines is connected with closed tank, and flow duct is positioned at safety valve inside.During work, hydraulic control lines pressurization back piston promotes flow duct and moves, and pushes flap open, opens safety valve; After controlling pipeline pressure release, the elastic force release of spring makes flow duct is moved, closed safe valve.
In use may there is the situation that piston seal performance lost efficacy in storm valve, after there is this situation, the natural gas in well wellbore enters hydraulic control lines, and is revealed by hydraulic control lines or be ejected into closed tank.When the pressure of the natural gas in closed tank acquires a certain degree, when being greater than the tolerance of closed tank, cause fuel tank explosion, then cause closed tank and catch fire, bring great hidden danger to the safety in production of high-pressure gas well.To lose efficacy the hidden danger brought for eliminating piston seal performance, in prior art, because storm valve subterranean depth is generally 40 ~ 80 meters, therefore, in oil, gas extraction process, this emergency valve piston sealing can only be eliminated to lose efficacy the hidden danger brought by implementing workover treatment.
But, because storm valve subterranean depth is generally 40 ~ 80 meters, cause that high-pressure gas well workover treatment is costly, the time is long, risk is high.Therefore, a kind of downhole safety valve system of how deducting a percentage is real is industry problem demanding prompt solution.
Utility model content
The utility model provides a kind of downhole safety valve system, by transforming to realize to eliminate the hidden danger of high-pressure gas well safety in production to storm valve control loop and avoiding workover treatment.
First aspect, the utility model provides a kind of downhole safety valve system, comprise: hydraulic oil container (1), hydraulic oil supercharging device (2), storm valve (3), linkage valve (4), the first pipeline (51), the second pipeline (52), drain line (53), wherein
Described hydraulic oil container (1), for holding hydraulic oil;
The inlet of described hydraulic oil supercharging device (2) is communicated with by described first pipeline (51) with described hydraulic oil container (1), and the liquid outlet of described hydraulic oil supercharging device (2) is communicated with by described second pipeline (52) with described storm valve (3); Described hydraulic oil supercharging device (2) is for opening described storm valve (3) during at needs, to the hydraulic oil supercharging in described second pipeline (52);
One end of described drain line (53) is communicated with described second pipeline (52), and the other end is used for exudate force feed;
Described linkage valve (4), be arranged on described drain line (53), close during hydraulic oil supercharging in described second pipeline (52) described hydraulic oil supercharging device (2), open during hydraulic oil step-down in described second pipeline (52).
In the first possible implementation in first, described downhole safety valve system also comprises: hydraulic control machine room (6), it is inner that described hydraulic oil container (1), described hydraulic oil supercharging device (2) and described linkage valve (4) are positioned at described hydraulic control machine room (6), and described drain line (53) is positioned at described hydraulic control machine room (6) outside for one end of exudate force feed.
In conjunction with the first possible implementation of first aspect, in the implementation that the second in first is possible, described safety valve system also comprises:
Open type fuel reserve tank (54), is arranged on the outside of described hydraulic control machine room (6), and is communicated with described drain line (53) one end for exudate force feed.
In conjunction with the first possible implementation of first aspect, in the third possible implementation in first, described safety valve system also comprises: safety valve pressure table (7), and described safety valve pressure table (7) is arranged on described second pipeline (52).
In conjunction with the first possible implementation of first aspect, in the 4th kind of possible implementation in first, described safety valve system also comprises:
High-pressure overflow valve (8), one end of described high-pressure overflow valve (8) is arranged on described second pipeline (52), and the other end is arranged on the outside of described hydraulic control machine room (6).
In conjunction with the first possible implementation of first aspect, in the 5th kind of possible implementation in first, described safety valve system also comprises:
Accumulator (9), described accumulator (9) is arranged on described second pipeline (52).
In conjunction with first aspect, in the 6th kind of possible implementation in first, described safety valve system also comprises: safety valve pressure table (7), high-pressure overflow valve (8) or accumulator (9), and described safety valve pressure table (7), described high-pressure overflow valve (8) or described accumulator (9) are arranged on described second pipeline (52).
In conjunction with the 6th kind of possible implementation of first aspect, in the 7th kind of possible implementation in first, described accumulator (9), described safety valve pressure table (7) and described high-pressure overflow valve (8) are arranged on described second pipeline (52) successively in order.
In conjunction with first aspect, first aspect the first to any one possible implementation in the 7th kind, in the 8th kind of possible implementation in first, described hydraulic oil supercharging device (2) is manual pump or electrodynamic pump.
In conjunction with first aspect, first aspect the first to any one possible implementation in the 7th kind, in the 9th kind of possible implementation in first, described storm valve (3) is SP type safety valve or NE type safety valve.
The downhole safety valve system that the utility model provides, by transforming storm valve control loop, avoid workover treatment, save the high expense of to carry out workover treatment because of storm valve seal failure and producing, and avoid other down hole problem that may occur in the reservoir secondary pollution and operation process caused because of workover treatment, eliminate the hidden danger of safety in production that high-pressure gas well brought because storm valve piston seal performance lost efficacy, effectively ensure that high pressure high gas rate well production time efficiency and condensate yield contribution rate then.
Accompanying drawing explanation
The structural representation of the downhole safety valve system that Fig. 1 provides for the utility model;
The structural representation of another the downhole safety valve system that Fig. 2 provides for the utility model;
The structural representation of another downhole safety valve system that Fig. 3 provides for the utility model;
The structural representation of another downhole safety valve system that Fig. 4 provides for the utility model;
The structural representation of another downhole safety valve system that Fig. 5 provides for the utility model.
Detailed description of the invention
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The structural representation of the downhole safety valve system that Fig. 1 provides for the utility model.As shown in Figure 1, the downhole safety valve system 100 that the present embodiment provides comprises: hydraulic oil container 1, hydraulic oil supercharging device 2, storm valve 3, linkage valve 4, first pipeline 51, second pipeline 52, drain line 53.
Wherein, described hydraulic oil container 1 is airtight container, for holding hydraulic oil; The inlet of described hydraulic oil supercharging device 2 is communicated with by described first pipeline 51 with described hydraulic oil container 1, and the liquid outlet of described hydraulic oil supercharging device 2 is communicated with by described second pipeline 52 with described storm valve 3; Described hydraulic oil supercharging device 2 for when described storm valve 3 opened by needs, to the hydraulic oil supercharging in described second pipeline 52; One end of described drain line 53 is communicated with described second pipeline 52, and the other end is used for exudate force feed; Described linkage valve 4, is arranged on described drain line 53, closes during hydraulic oil supercharging in described second pipeline 52 at described hydraulic oil supercharging device 2, opens during hydraulic oil step-down in described second pipeline 52.
Below, the operating principle of downhole safety valve system that composition graphs 1 pair of the utility model embodiment provides elaborates.
Concrete, when normal need of work is opened storm valve 3 pressurization, hydraulic oil supercharging device 2 is to the hydraulic oil supercharging in the second pipeline 52, linkage valve 4 is closed simultaneously, now, hydraulic oil is passed to storm valve 3 from hydraulic oil container 1 by the first pipeline 51 and the second pipeline 52, thus to the state that storm valve 3 pressurization makes it be in open.
When needing to close storm valve 3 pressure release when to be in an emergency etc., hydraulic oil in second pipeline 52 needs pressure release, the linkage valve 4 be arranged on drain line 53 is opened, and hydraulic oil is flowed out by drain line 53, thus makes it be in closed condition to storm valve 3 pressure release.Now, if the piston seal performance of storm valve 3 lost efficacy, natural gas in well wellbore enters the second pipeline 52, because linkage valve 4 is in open mode, hydraulic oil containing natural gas can be crossed discharged through drain line 53 by linkage valve 4, thus avoid the liquid controling pipe line of the natural gas in well wellbore by storm valve 3, namely hydraulic oil container 1 is revealed or be ejected into the second pipeline 52 and the first pipeline 51, eliminates the hidden danger of the safety in production that high-pressure gas well brought because storm valve piston seal performance lost efficacy.
The downhole safety valve system that the utility model embodiment provides, by transforming storm valve control loop, avoid workover treatment, save the high expense of to carry out workover treatment because of storm valve seal failure and producing, and avoid other down hole problem that may occur in the reservoir secondary pollution and operation process caused because of workover treatment, eliminate the hidden danger of safety in production that high-pressure gas well brought because storm valve piston seal performance lost efficacy, effectively ensure that high pressure high gas rate well production time efficiency and condensate yield contribution rate then.
Optionally, in the utility model one embodiment, further improvement can be done to the downhole safety valve system 100 shown in above-mentioned Fig. 1 embodiment, specifically can see Fig. 2.
The structural representation of another the downhole safety valve system that Fig. 2 provides for the utility model.As shown in Figure 2, the downhole safety valve system 200 that the present embodiment provides is on the basis of downhole safety valve system 100 shown in above-mentioned Fig. 1, also comprise: hydraulic control machine room 6, it is inner that described hydraulic oil container 1, described hydraulic oil supercharging device 2 and described linkage valve 4 are positioned at described hydraulic control machine room, and described drain line 53 is positioned at described hydraulic control machine room 6 outside for one end of exudate force feed.In the present embodiment, hydraulic oil container 1, hydraulic oil supercharging device 2 and linkage valve 4 are arranged on hydraulic control machine room 6 inner, one end drain line 53 being used for exudate force feed is arranged on the outside of hydraulic control machine room 6, can avoid other equipment of hydraulic oil pollution hydraulic control machine room 6 or hydraulic control machine room 6 inside of being flowed out by drain line 53.
Optionally, in the utility model one embodiment, further improvement can be done to the downhole safety valve system 200 shown in above-mentioned Fig. 2 embodiment, specifically can see Fig. 3.
The structural representation of another downhole safety valve system that Fig. 3 provides for the utility model.As shown in Figure 3, the downhole safety valve system 300 that the present embodiment provides is on the basis of downhole safety valve system 200 shown in above-mentioned Fig. 2, also comprise: open type fuel reserve tank 54, be arranged on the outside of hydraulic control machine room 6, and be communicated with drain line 53 one end for exudate force feed.In the present embodiment, the hydraulic oil flowed out through drain line 53 can be collected by open type fuel reserve tank 54, so that hydraulic oil can recycle.And, when the hydraulic oil flowed out via drain line 53 is mixed with natural gas, natural gas can be made to be overflowed by the opening of open type fuel reserve tank 54.
Optionally, in the utility model one embodiment, further improvement can be done to the downhole safety valve system shown in the downhole safety valve system 200 shown in above-mentioned Fig. 2 or Fig. 3, specifically can see Fig. 4.
The structural representation of another downhole safety valve system that Fig. 4 provides for the utility model.As shown in Figure 4, the downhole safety valve system 400 that the present embodiment provides, on the basis of downhole safety valve system 200 shown in above-mentioned Fig. 2, also comprises: safety valve pressure table 7, and described safety valve pressure table 7 is arranged on described second pipeline 52.In the present embodiment, the safety valve pressure table 7 be arranged on the second pipeline 52 can show the pressure of hydraulic oil in the second pipeline 52 in real time, the convenient real-time monitoring realized oil pressure.
Please refer to Fig. 4 again, optionally, in the utility model one embodiment, downhole safety valve system 400 also comprises: high-pressure overflow valve 8, and described high-pressure overflow valve 8 is arranged on described second pipeline 52.In the present embodiment, one end of high-pressure overflow valve 8 is arranged on second pipe 52, and the other end is arranged on drain line 53 for being positioned at the outside of hydraulic control machine room (6) between one end of exudate force feed and linkage valve 4.When in the second pipeline 52, oil pressure is greater than a certain threshold value, such as, when safety valve pressure table 7 monitors out that in the second pipeline 52, oil pressure is greater than a certain threshold value, high-pressure overflow valve 8 is opened and is carried out overflow pressure relief, thus avoids pipelines from bursting event.In addition, in the present embodiment, the other end of high-pressure overflow valve 8 is arranged on drain line 53 for being also can carry out overflow pressure relief to reach when linkage valve 4 is closed between one end of exudate force feed and linkage valve 4.
Please refer to Fig. 4 again, optionally, in the utility model one embodiment, downhole safety valve system 400 also comprises: accumulator 9, and described accumulator 9 is arranged on described second pipeline 52.In the present embodiment, when in the second pipeline 52, oil pressure is less than a certain threshold value, such as, when safety valve pressure table 7 monitors out that in the second pipeline 52, oil pressure is less than a certain threshold value, the accumulator 9 be arranged on the second pipeline 52 starts to compensate the pressure in the second pipeline 52, thus plays the effect of systems stabilisation pressure.
Please refer to Fig. 4 again, optionally, in the utility model one embodiment, described safety valve pressure table 7, described high-pressure overflow valve 8 are arranged on described second pipeline 52 successively in order with described accumulator 9.In the present embodiment, be communicated with on the second pipeline 52 between hydraulic oil supercharging device 2 and storm valve 3, set gradually accumulator 9, safety valve pressure table 7 and high-pressure overflow valve 8.
It should be noted that, although the various embodiments described above are described in detail to the utility model to safety valve pressure table 7, high-pressure overflow valve 8 and accumulator 9 based on Fig. 4.But the utility model is not as restriction, and in the embodiment that other are feasible, safety valve pressure table 7, high-pressure overflow valve 8 and accumulator 9 also can based on safety valve system Fig. 1, Fig. 2 or Fig. 3 etc. Suo Shi.Such as, the safety valve system shown in Fig. 5, the structural representation of another downhole safety valve system that Fig. 5 provides for the utility model, its specific works principle see the description of above-mentioned Fig. 1 ~ Fig. 4, can repeat no more herein.
In addition, also it should be noted that, although above-mentioned embodiment illustrated in fig. 4 in, safety valve pressure table 7, high-pressure overflow valve 8 and accumulator 9 are all arranged and the outside of hydraulic control machine room 6.But, the utility model not as restriction, in the embodiment that other are feasible, can arrange according to demand safety valve pressure table 7, high-pressure overflow valve 8 and accumulator 9 all with the relative position of hydraulic control machine room 6.Such as, full valve pressure meter 7, high-pressure overflow valve 8 and accumulator 9 all can be arranged the inside with hydraulic control machine room 6, or, one of them is arranged on the inside of hydraulic control machine room 6, the remaining outside being arranged on hydraulic control machine room 6.
In addition, also it should be noted that, although above-mentioned embodiment illustrated in fig. 4 in, downhole safety valve system 400 comprises safety valve pressure table 7, high-pressure overflow valve 8 and accumulator 9.But, the utility model not as restriction, in the embodiment that other are feasible, safety valve system 400 can only comprise one of them or wherein two.
Optionally, in the utility model one embodiment, hydraulic oil supercharging device 2 is manual pump or electrodynamic pump.
Optionally, in the utility model one embodiment, storm valve 3 is SP type safety valve or NE type safety valve.
Optionally, in the utility model one embodiment, linkage valve 4 is electromagnetic valve.When hydraulic oil supercharging device 2 is to hydraulic oil supercharging in the second pipeline 52, closed electromagnetic valve; That second pipeline 52 in hydraulic oil when needing step-down, electromagnetic valve is opened.
Optionally, in the utility model one embodiment, linkage valve 4 is pilot valve.The opening and closing of hydraulic fluid pressure to pilot valve that downhole safety valve system is controlled in the second pipeline 52 by pilot valve controls.Such as, when hydraulic oil supercharging device 2 is to hydraulic oil supercharging in the second pipeline 52, pilot valve controls the hydraulic oil pressurization in the second pipeline 52, and pilot valve is closed; When the hydraulic oil in the second pipeline 52 needs step-down, pilot valve controls the hydraulic oil pressure release in the second pipeline 52, and pilot valve is closed.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (10)
1. a downhole safety valve system, is characterized in that, comprising:
Hydraulic oil container (1), hydraulic oil supercharging device (2), storm valve (3), linkage valve (4), the first pipeline (51), the second pipeline (52), drain line (53), wherein
Described hydraulic oil container (1), for holding hydraulic oil;
The inlet of described hydraulic oil supercharging device (2) is communicated with by described first pipeline (51) with described hydraulic oil container (1), and the liquid outlet of described hydraulic oil supercharging device (2) is communicated with by described second pipeline (52) with described storm valve (3); Described hydraulic oil supercharging device (2) is for opening described storm valve (3) during at needs, to the hydraulic oil supercharging in described second pipeline (52);
One end of described drain line (53) is communicated with described second pipeline (52), and the other end is used for exudate force feed;
Described linkage valve (4), be arranged on described drain line (53), close during hydraulic oil supercharging in described second pipeline (52) described hydraulic oil supercharging device (2), open during hydraulic oil step-down in described second pipeline (52).
2. downhole safety valve system according to claim 1, is characterized in that, also comprise:
Hydraulic control machine room (6), it is inner that described hydraulic oil container (1), described hydraulic oil supercharging device (2) and described linkage valve (4) are positioned at described hydraulic control machine room (6), and described drain line (53) is positioned at described hydraulic control machine room (6) outside for one end of exudate force feed.
3. downhole safety valve system according to claim 2, is characterized in that, also comprise:
Open type fuel reserve tank (54), is arranged on the outside of described hydraulic control machine room (6), and is communicated with described drain line (53) one end for exudate force feed.
4. downhole safety valve system according to claim 2, is characterized in that, also comprise:
Safety valve pressure table (7), described safety valve pressure table (7) is arranged on described second pipeline (52).
5. downhole safety valve system according to claim 2, is characterized in that, also comprise:
High-pressure overflow valve (8), one end of described high-pressure overflow valve (8) is arranged on described second pipeline (52), and the other end is arranged on the outside of described hydraulic control machine room (6).
6. safety valve system according to claim 2, is characterized in that, also comprises:
Accumulator (9), described accumulator (9) is arranged on described second pipeline (52).
7. downhole safety valve system according to claim 1, it is characterized in that, also comprise: safety valve pressure table (7), high-pressure overflow valve (8) or accumulator (9), described safety valve pressure table (7), described high-pressure overflow valve (8) or described accumulator (9) are arranged on described second pipeline (52).
8. downhole safety valve system according to claim 7, it is characterized in that, described accumulator (9), described safety valve pressure table (7) and described high-pressure overflow valve (8) are arranged on described second pipeline (52) successively in order.
9. the downhole safety valve system according to any one of claim 1 ~ 8, is characterized in that, described hydraulic oil supercharging device (2) is manual pump or electrodynamic pump.
10. the downhole safety valve system according to any one of claim 1 ~ 8, is characterized in that, described storm valve (3) is SP type safety valve or NE type safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520316699.2U CN204703847U (en) | 2015-05-15 | 2015-05-15 | Downhole safety valve system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520316699.2U CN204703847U (en) | 2015-05-15 | 2015-05-15 | Downhole safety valve system |
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| CN204703847U true CN204703847U (en) | 2015-10-14 |
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| CN201520316699.2U Active CN204703847U (en) | 2015-05-15 | 2015-05-15 | Downhole safety valve system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285561A (en) * | 2015-05-15 | 2017-01-04 | 中国石油天然气股份有限公司 | Downhole safety valve system |
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- 2015-05-15 CN CN201520316699.2U patent/CN204703847U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285561A (en) * | 2015-05-15 | 2017-01-04 | 中国石油天然气股份有限公司 | Downhole safety valve system |
| CN106285561B (en) * | 2015-05-15 | 2019-05-07 | 中国石油天然气股份有限公司 | Downhole safety valve system |
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