CN202370463U - Pressure control throttling pipe manifold - Google Patents
Pressure control throttling pipe manifold Download PDFInfo
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- CN202370463U CN202370463U CN2011205376304U CN201120537630U CN202370463U CN 202370463 U CN202370463 U CN 202370463U CN 2011205376304 U CN2011205376304 U CN 2011205376304U CN 201120537630 U CN201120537630 U CN 201120537630U CN 202370463 U CN202370463 U CN 202370463U
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- passage
- throttling passage
- throttling
- pressure control
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Abstract
The utility model relates to a pressure control throttling pipe manifold, which comprises a series connection throttling passage, a fine throttling passage, a flow rate measuring passage and a parallel connection throttling passage, wherein the series connection throttling passage, the fine throttling passage and the flow rate measuring passage are sequentially connected, the parallel connection throttling passage is in parallel connection arrangement with the fine throttling passage, a flow rate meter is arranged in the flow rate measuring passage, a first throttling valve is arranged in the series connection throttling passage, a second throttling valve is arranged in the fine throttling passage, and a third throttling valve is arranged in the parallel connection throttling passage. The utility model provides a compound type multi-stage fine pressure control throttling pipe manifold formed by ordinary throttling valves in a series connection and parallel connection combining mode, in the compound type multi-stage fine pressure control throttling pipe manifold, a series connection throttling valve is used for pipeline pressure division, a parallel connection pipeline is used for pipeline flow division, and the pressure is precisely controlled in different regions. When the compound type multi-stage fine pressure control throttling pipe manifold is used, the back pressure control precision is improved, and in addition, the service life of the throttling valves is prolonged, and the operation cost is reduced.
Description
Technical field
The utility model is the controlled pressure drilling technology that is used for the oil-gas field development drilling process about a kind of, relates in particular to a kind of compound multi-level fine pressure control choke manifold.
Background technology
Oil and gas development is increasing in the bad ground operation at present.The caving pressure of general bad ground is with the fracture pressure difference is less or mud safety density window is narrower, and application conventional drilling technology runs into spray often, the accident of leaking, block, collapse.For safety is carried out drillng operation, the minimizing accident takes place, and often uses the controlled pressure drilling technology.One of means of controlled pressure drilling technology are thereby that its core technology is the self-choke manifold with one of equipment through the indirect control well bottom pressure of control wellhead back pressure.Utilize the self-choke manifold can realize accurate control to wellhead back pressure.Controlled pressure drilling to wellhead back pressure require control range wide (50MPa-70MPa), control accuracy high (± 0.3MPa).Conventional throttle valve core aperture and choke pressure drop exist stronger non-linear, are unfavorable for realizing high precision in control.The choke valve that utilizes special process processing aperture and choke valve pressure drop within the specific limits is linear, but the choke valve cost is expensive, has increased operating cost.Drilling fluid displacement is bigger in the drillng operation in addition, and choke valve working life under High Pressure Difference and big displacement condition shortens.
Used a choke valve as restricting element in the most choke manifold primary structures that use at present, realized control pressure.In order to improve control accuracy, most advanced choke valves that adopt special process to make.Under High Pressure Difference, big displacement condition, the choke valve working life shortens, and has increased the drillng operation cost.The choke manifold that utilizes series system to form has reduced the pressure reduction at each choke valve two ends; Improved the working life of choke valve to a certain extent; But the work aperture of each choke valve is defined within the specific limits in the choke manifold of series system, is unfavorable for realizing control automatically and improves pressure controling precision.The parallel connection choke manifold utilizes parallel branch that drilling fluid is shunted, and reduces the mud flow rate in every branch road, has improved the linear relationship of throttle valve opening and choke pressure drop, has prolonged the choke valve working life to a certain extent.But choke valve two ends pressure reduction does not reduce in the parallelly connected choke manifold, and in the higher-pressure region, the control accuracy of parallelly connected choke manifold reduces.
Thus, the inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of pressure control choke manifold, to overcome the defective of prior art.
The utility model content
The purpose of the utility model is to provide a kind of pressure control choke manifold, can improve the linear relationship of throttle valve opening and choke pressure drop, improves the control accuracy of back pressure, prolongs the working life of choke valve.
Another purpose of the utility model is to provide a kind of pressure control choke manifold, can reduce the requirement of choke manifold to choke valve hardware.
The purpose of the utility model is to realize like this; A kind of pressure control choke manifold; Said pressure control choke manifold comprises the series connection throttling passage that is linked in sequence, meticulous throttling passage and flow measurement passage, also comprises the parallelly connected throttling passage of parallelly connected setting with said meticulous throttling passage; Be provided with a flow meter in the said flow measurement passage; Be provided with the first throttle valve in the said series connection throttling passage, be provided with second choke valve in the meticulous throttling passage, be provided with the 3rd choke valve in the parallelly connected throttling passage.
In a preferred embodiments of the utility model; The inlet of said series connection throttling passage is connected in the drilling fluid import through a threeway; The outlet of series connection throttling passage is connected in the inlet of meticulous throttling passage and parallelly connected throttling passage through first five-way; The outlet of meticulous throttling passage and parallelly connected throttling passage is connected in the inlet of flow measurement passage through second five-way, the export mixes drilling fluid outlet of flow measurement passage.
In a preferred embodiments of the utility model, be provided with first at the entrance side of said first throttle valve and surge or the pneumatic flat plate valve, be provided with the first manual flap type at the outlet side of said first throttle valve; Be provided with second at the entrance side of said second choke valve and surge or the pneumatic flat plate valve, be provided with the second manual flap type at the outlet side of said second choke valve; Be provided with the 3rd at the entrance side of said the 3rd choke valve and surge or the pneumatic flat plate valve, be provided with the 3rd manual flap type at the outlet side of said the 3rd choke valve.
In a preferred embodiments of the utility model, be respectively equipped with the 4th manual flap type and the 5th manual flap type in said flow meter both sides.
In a preferred embodiments of the utility model, also parallel connection is provided with an escape way on said flow measurement passage; Be provided with one the 6th manual flap type in the said escape way.
In a preferred embodiments of the utility model, between said threeway and first five-way, be provided with a subsequent use throttling passage of connecting; Between said first five-way and second five-way, be provided with a subsequent use parallelly connected throttling passage.
In a preferred embodiments of the utility model, the structure of said subsequent use series connection throttling passage is identical with said series connection throttling passage; The structure of said subsequent use parallelly connected throttling passage is identical with said parallelly connected throttling passage.
In a preferred embodiments of the utility model, be respectively equipped with first pressure sensor and second pressure sensor at the arrival end and the port of export of said series connection throttling passage.
From the above mentioned; The pressure control choke manifold of the utility model; Pipeline through series and parallel is divided into back pressure between coarse adjustment interval and meticulous regulatory region, reduces choke valve two ends pressure reduction through cascaded structure, shunts through the parallel-connection structure convection cell; Constitute a compound multi-level fine pressure control choke manifold thus, can reach the purpose that reduces the choke valve wearing and tearing, prolongs working life; Scope between the meticulous regulatory region of parallel connection throttle valve control is carried out High Accuracy Control by meticulous choke valve to pressure, and pressure controling precision is improved in the controlled pressure drilling overall process; The work operating mode that can adapt to the big discharge capacity of controlled pressure drilling, High Pressure Difference; Has the ability of under the situation of not interrupting the controlled pressure drilling operation, changing pipeline, on-line maintenance.In addition, the pressure control choke manifold of the utility model can reduce the choke valve hardware requirement.
Description of drawings
Following accompanying drawing only is intended to the utility model is done schematic illustration and explanation, does not limit the scope of the utility model.Wherein:
Fig. 1: be the structural representation of the compound multi-level fine pressure control of the utility model choke manifold.
Fig. 2: be the compound choke manifold pressure characteristic of the utility model figure.
Fig. 3: be the compound choke manifold pressure control of the utility model curve map.
Fig. 4: be the compound choke manifold flow of the utility model sketch map.
The specific embodiment
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the specific embodiment of description of drawings the utility model at present.
As shown in Figure 1; The utility model provides a kind of pressure control choke manifold 100; Said pressure control choke manifold 100 comprises series connection throttling passage 1, meticulous throttling passage 2 and the flow measurement passage 3 that is linked in sequence, and also comprises the parallelly connected throttling passage 4 with said meticulous throttling passage 2 parallelly connected settings; Be provided with a flow meter 31 in the said flow measurement passage 3, said flow is counted mass flowmenter; Be provided with first throttle valve 11 (V in the said series connection throttling passage 1
A), be provided with second choke valve, 21 (V in the meticulous throttling passage 2
C), be provided with the 3rd choke valve 41 (V in the parallelly connected throttling passage 4
B); Constitute a compound multi-level fine pressure control choke manifold thus.
V among Fig. 1
AFor series throttle (that is: the first throttle valve 11), be positioned at choke manifold foremost, play the effect of dividing potential drop; V
BWith V
CForm parallel pipeline, be positioned at the rear portion of choke manifold.V
BWith V
CStructure is identical, and effect is different.V
BBe by parallelly connected choke valve (that is: the 3rd choke valve 41), in choke manifold, carry out the fluid shunting.V
CFor meticulous choke valve (that is: second choke valve 21), in choke manifold, back pressure is carried out meticulous adjusting.
First throttle valve 11 among Fig. 1, second choke valve 21, the 3rd choke valve 41 are the hydraulic control choke valve.
Fig. 2 is the compound choke manifold pressure characteristic of the utility model, and is as shown in Figure 2, and when the choke manifold pressure drop was Δ P, throttle valve opening and pressure drop existed stronger non-linearly in the conventional throttle manifold, and choke valve can only be operated in certain aperture interval.Compound choke manifold is at series throttle V
A, parallelly connected choke valve V
B, meticulous choke valve V
CActing in conjunction under, choke manifold equivalent aperture and pressure drop meet linear relationship, wherein meticulous choke valve can be worked in aperture 0-100% interval.
Fig. 3 is the compound choke manifold pressure control of a utility model curve, and as shown in Figure 3, compound choke manifold is divided into Δ P with back pressure
A-b(pressure control curve is curve " I ") and Δ P
B-c(pressure control curve is curve " II " or " III ") two intervals.Δ P wherein
A-b(curve " I ") is that coarse adjustment is interval, utilizes series throttle V
ACan change Δ P arbitrarily
A-bSize.Choke valve V
BAnd V
CWhen being standard-sized sheet, use V
ABe equivalent to the conventional throttle manifold when regulating.Δ P
B-cFor between meticulous regulatory region, curve " II " is that the conventional throttle manifold is at Δ P
B-cInterval control curve, curve " III " is parallelly connected choke valve V
BAnd meticulous choke valve V
CPressure control curve under the acting in conjunction.Compound choke manifold utilizes pressure control curve " III " to replace the pressure control curve " II " of conventional throttle manifold between meticulous regulatory region, makes Δ P
B-cInterval internal pressure control accuracy is improved.In compound choke manifold, through changing parallelly connected choke valve V
CAperture can control Δ P
B-cInterval size.
Fig. 4 is the compound choke manifold flow of a utility model sketch map.When pit shaft outlet mud flow rate was constant, series connection throttling passage mud flow rate was a steady state value.As meticulous choke valve V
CWhen aperture was 0% (complete shut-down), parallelly connected throttling passage mud flow rate was identical with series connection throttling passage mud flow rate.Parallel connection choke valve V
BAperture remains unchanged, along with meticulous choke valve V
CAperture increases gradually, and meticulous throttling passage mud flow rate also increases gradually, and parallelly connected throttling passage mud flow rate reduces gradually, but meticulous throttling passage remains unchanged with parallelly connected throttling passage mud flow rate sum.Thereby compound choke manifold utilizes parallelly connected throttling passage to realize the mud flow rate shunting is reduced the impact wear to choke valve, prolongs choke valve application life.
From the above mentioned; The compound multi-level fine choke manifold of the utility model; Pipeline through series and parallel is divided into back pressure between coarse adjustment interval and meticulous regulatory region; Reduce choke valve two ends pressure reduction through cascaded structure,, reach the purpose that reduces the choke valve wearing and tearing, prolongs working life through the shunting of parallel-connection structure convection cell; Scope between the meticulous regulatory region of parallel connection throttle valve control is carried out High Accuracy Control by meticulous choke valve to pressure, and pressure controling precision is improved in the controlled pressure drilling overall process; The work operating mode that can adapt to the big discharge capacity of controlled pressure drilling, High Pressure Difference; Has the ability of under the situation of not interrupting the controlled pressure drilling operation, changing pipeline, on-line maintenance.In addition, the compound multi-level fine choke manifold of the utility model can reduce the choke valve hardware requirement.
Further; As shown in Figure 1; In this embodiment, the inlet of said series connection throttling passage 1 is connected in drilling fluid import A through a threeway 5, and the outlet of series connection throttling passage 1 is connected in the inlet of meticulous throttling passage 2 and parallelly connected throttling passage 4 through first five-way 6; The outlet of meticulous throttling passage 2 and parallelly connected throttling passage 4 is connected in the inlet of flow measurement passage 3, the export mixes drilling fluid outlet B of flow measurement passage 3 through second five-way 7.
In this embodiment, be provided with first at the entrance side of said first throttle valve 11 and surge or pneumatic flat plate valve 12, be provided with the first manual flap type 13 at the outlet side of said first throttle valve 11; Be provided with second at the entrance side of said second choke valve 21 and surge or pneumatic flat plate valve 22, be provided with the second manual flap type 23 at the outlet side of said second choke valve 21; Be provided with the 3rd at the entrance side of said the 3rd choke valve 41 and surge or pneumatic flat plate valve 42, be provided with the 3rd manual flap type 43 at the outlet side of said the 3rd choke valve 41.Be respectively equipped with the 4th manual flap type 32 and the 5th manual flap type 33 in said flow meter 31 both sides.
In this embodiment, also parallel connection is provided with an escape way 34 on said flow measurement passage 3, when flow measurement passage 3 breaks down, can open escape way 34; Be provided with one the 6th manual flap type 341 in the said escape way 34.
Further, as shown in Figure 1 in this embodiment, between said threeway 5 and first five-way 6, be provided with a subsequent use throttling passage 8 of connecting, subsequent use as series connection throttling passage 1; Between said first five-way 6 and second five-way 7, be provided with a subsequent use parallelly connected throttling passage 9, subsequent use as parallelly connected throttling passage 4 and meticulous throttling passage 2.The structure of said subsequent use series connection throttling passage 8 is identical with the structure of said series connection throttling passage 1; The structure of said subsequent use parallelly connected throttling passage 9 is identical with the structure of said parallelly connected throttling passage 4.
In this embodiment, be respectively equipped with first pressure sensor 14 and second pressure sensor 15 at the arrival end and the port of export of said series connection throttling passage 1.
In the controlled pressure drilling process; Drilling fluid gets into choke manifold by the A mouth; Under the effect of series throttle 11, produce a constant pressure drop through series connection throttling passage 1, the difference of second pressure sensor 15 on first pressure sensor 14 in the threeway and first five-way is the pressure drop of the throttling passage of connecting.Drilling fluid gets into parallelly connected throttling passage 4 and meticulous throttling passage 2 through series connection throttling passage 1 back by first five-way; Under the effect of parallelly connected choke valve 41, the control action of 21 pairs of pressure of meticulous choke valve is defined within the specific limits, and 21 pairs of pressure of meticulous choke valve carry out meticulous adjusting in this scope.Meticulous choke valve 21 can be worked in aperture 0-100% scope.The B mouth connects mud vibrating screen and gas-liquid separator; The connection of pipeline adopts flange to connect.In this embodiment, described choke valve is the moving choke valve of gas (liquid); Choke valve type and model are identical in series connection throttling passage, parallelly connected throttling passage, the meticulous throttling passage, and wherein parallelly connected throttling passage and meticulous throttling passage can exchange use.
The utility model provides the compound multi-level fine choke manifold that utilizes common choke valve to constitute through series connection and parallelly connected compound mode; Utilize series throttle to carry out the pipeline dividing potential drop in the compound multi-level fine choke manifold; Utilize parallel pipeline to carry out the pipeline shunting, in zones of different, pressure is accurately controlled; Utilize compound multi-level fine choke manifold not only to improve control accuracy, and make the choke valve life-span obtain prolonging, thereby reduce operating cost back pressure.
The above is merely the schematic specific embodiment of the utility model, is not in order to limit the scope of the utility model.Any those skilled in the art, equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.
Claims (8)
1. pressure control choke manifold, it is characterized in that: said pressure control choke manifold comprises the series connection throttling passage that is linked in sequence, meticulous throttling passage and flow measurement passage, also comprises the parallelly connected throttling passage of parallelly connected setting with said meticulous throttling passage; Be provided with a flow meter in the said flow measurement passage; Be provided with the first throttle valve in the said series connection throttling passage, be provided with second choke valve in the meticulous throttling passage, be provided with the 3rd choke valve in the parallelly connected throttling passage.
2. pressure control choke manifold as claimed in claim 1; It is characterized in that: the inlet of said series connection throttling passage is connected in the drilling fluid import through a threeway; The outlet of series connection throttling passage is connected in the inlet of meticulous throttling passage and parallelly connected throttling passage through first five-way; The outlet of meticulous throttling passage and parallelly connected throttling passage is connected in the inlet of flow measurement passage through second five-way, the export mixes drilling fluid outlet of flow measurement passage.
3. pressure control choke manifold as claimed in claim 1 is characterized in that: be provided with first at the entrance side of said first throttle valve and surge or the pneumatic flat plate valve, be provided with the first manual flap type at the outlet side of said first throttle valve; Be provided with second at the entrance side of said second choke valve and surge or the pneumatic flat plate valve, be provided with the second manual flap type at the outlet side of said second choke valve; Be provided with the 3rd at the entrance side of said the 3rd choke valve and surge or the pneumatic flat plate valve, be provided with the 3rd manual flap type at the outlet side of said the 3rd choke valve.
4. pressure control choke manifold as claimed in claim 1 is characterized in that: be respectively equipped with the 4th manual flap type and the 5th manual flap type in said flow meter both sides.
5. pressure control choke manifold as claimed in claim 1 is characterized in that: also parallel connection is provided with an escape way on said flow measurement passage; Be provided with one the 6th manual flap type in the said escape way.
6. pressure control choke manifold as claimed in claim 2 is characterized in that: between said threeway and first five-way, be provided with a subsequent use throttling passage of connecting; Between said first five-way and second five-way, be provided with a subsequent use parallelly connected throttling passage.
7. pressure control choke manifold as claimed in claim 6 is characterized in that: the structure of said subsequent use series connection throttling passage is identical with said series connection throttling passage; The structure of said subsequent use parallelly connected throttling passage is identical with said parallelly connected throttling passage.
8. pressure control choke manifold as claimed in claim 2 is characterized in that: the arrival end and the port of export at said series connection throttling passage are respectively equipped with first pressure sensor and second pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205376304U CN202370463U (en) | 2011-12-20 | 2011-12-20 | Pressure control throttling pipe manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205376304U CN202370463U (en) | 2011-12-20 | 2011-12-20 | Pressure control throttling pipe manifold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370463U true CN202370463U (en) | 2012-08-08 |
Family
ID=46594170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205376304U Expired - Lifetime CN202370463U (en) | 2011-12-20 | 2011-12-20 | Pressure control throttling pipe manifold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370463U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256015A (en) * | 2013-05-06 | 2013-08-21 | 中国石油大学(北京) | Wellhead back pressure controlling system of managed pressure drilling and wellhead back pressure controlling method |
| CN104215436A (en) * | 2013-05-30 | 2014-12-17 | 宁波富华阀门有限公司 | Durability testing system for low-temperature stop valve |
| CN106761501A (en) * | 2017-02-10 | 2017-05-31 | 中国石油集团西部钻探工程有限公司 | Single channel attachment-type pressure control device |
| CN107201884A (en) * | 2017-07-10 | 2017-09-26 | 中国石油集团西部钻探工程有限公司 | Fine controlled pressure drilling standpipe flow shunt control device and its back pressure compensation method |
| CN109899011A (en) * | 2019-04-10 | 2019-06-18 | 四川恒铭泽石油天然气工程有限公司 | A kind of oil/gas well full-automatic electric throttling control pressure system |
| CN110886585A (en) * | 2019-12-02 | 2020-03-17 | 中国石油集团西部钻探工程有限公司 | Automatic throttle control device for back pressure compensation in drilling operation and use method thereof |
| CN114000842A (en) * | 2020-07-28 | 2022-02-01 | 中国石油天然气集团有限公司 | High-pressure automatic throttle manifold and control method thereof |
| CN114645692A (en) * | 2022-05-23 | 2022-06-21 | 德州联合石油科技股份有限公司 | Wellhead Christmas tree throttle valve core and throttle valve |
-
2011
- 2011-12-20 CN CN2011205376304U patent/CN202370463U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256015A (en) * | 2013-05-06 | 2013-08-21 | 中国石油大学(北京) | Wellhead back pressure controlling system of managed pressure drilling and wellhead back pressure controlling method |
| CN103256015B (en) * | 2013-05-06 | 2015-10-21 | 中国石油大学(北京) | The wellhead back pressure control system of controlled pressure drilling and wellhead back pressure control method |
| CN104215436A (en) * | 2013-05-30 | 2014-12-17 | 宁波富华阀门有限公司 | Durability testing system for low-temperature stop valve |
| CN106761501A (en) * | 2017-02-10 | 2017-05-31 | 中国石油集团西部钻探工程有限公司 | Single channel attachment-type pressure control device |
| CN107201884A (en) * | 2017-07-10 | 2017-09-26 | 中国石油集团西部钻探工程有限公司 | Fine controlled pressure drilling standpipe flow shunt control device and its back pressure compensation method |
| CN109899011A (en) * | 2019-04-10 | 2019-06-18 | 四川恒铭泽石油天然气工程有限公司 | A kind of oil/gas well full-automatic electric throttling control pressure system |
| CN110886585A (en) * | 2019-12-02 | 2020-03-17 | 中国石油集团西部钻探工程有限公司 | Automatic throttle control device for back pressure compensation in drilling operation and use method thereof |
| CN110886585B (en) * | 2019-12-02 | 2022-02-08 | 中国石油集团西部钻探工程有限公司 | Automatic throttle control device for back pressure compensation in drilling operation and use method thereof |
| CN114000842A (en) * | 2020-07-28 | 2022-02-01 | 中国石油天然气集团有限公司 | High-pressure automatic throttle manifold and control method thereof |
| CN114645692A (en) * | 2022-05-23 | 2022-06-21 | 德州联合石油科技股份有限公司 | Wellhead Christmas tree throttle valve core and throttle valve |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |
|
| CX01 | Expiry of patent term |