CN205135481U - Slush pump is cascaded output device of discharge capacity in well drilling is pressed in accuse - Google Patents
Slush pump is cascaded output device of discharge capacity in well drilling is pressed in accuse Download PDFInfo
- Publication number
- CN205135481U CN205135481U CN201520832282.1U CN201520832282U CN205135481U CN 205135481 U CN205135481 U CN 205135481U CN 201520832282 U CN201520832282 U CN 201520832282U CN 205135481 U CN205135481 U CN 205135481U
- Authority
- CN
- China
- Prior art keywords
- discharge capacity
- pump
- output device
- slush pump
- module
- 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.)
- Expired - Fee Related
Links
Landscapes
- Earth Drilling (AREA)
Abstract
(B, ) the utility model relates to a well drilling technical field is pressed in the accuse, is a slush pump is cascaded output device of discharge capacity in well drilling is pressed in accuse, and slush pump is cascaded output device of discharge capacity in well drilling is pressed in accuse includes feed liquor pipe, control tube, setting module and logical decision module, and the feed liquor pipe is in the same place through tee bend fixed mounting with the control tube, and fixed mounting has the flow to keep watch on module and first ooff valve on the feed liquor pipe, has second switch valve and choke valve according to preface fixed mounting on the control tube. The utility model discloses the discharge capacity that can make the mechanical pump in the well drilling is pressed in the accuse is in turn on pump and the cascaded input pit shaft of termination of pumping in -process to in the pressure variation that automatic choke manifold has sufficient time compensation to cause the shaft bottom because of turn on pump and termination of pumping, make the shaft bottom keep invariable at the pressure of turn on pump and termination of pumping in -process, provide technical support for the technological implementation of accuse pressure well drilling. (B, )
Description
Technical field
the utility model relates to controlled pressure drilling technical field, is a kind of slush pump discharge capacity staged output device in controlled pressure drilling.
Background technology
in drilling process, often there is the problem that turn on pump leaks and termination of pumping is sprayed in the drilling well of narrow Density Window, for head it off and introduce controlled pressure drilling technology, i.e. MPD(ManagedPressureDrilling).Its technical characteristics: instrument is combined with technique, by controlling annular pressure section in advance, the relevant risk of narrow ' Safe Density Windows drilling well and investment can be reduced, comprehensive analysis can be carried out to back pressure, fluid density, fluid rheology, annulus liquid level, circulation frictional force and well physical dimension and also be controlled.Pressure change in controlled pressure drilling observable pit shaft, can Dynamic controlling annular pressure, economically completes the drillng operation that other technologies can not complete.In controlled pressure drilling process, bottom pressure expression formula: Ph=Pm+Pa+Pc, wherein, Ph is bottom pressure, and Pm is annular space head of liquid, and Pc is surface casing pressure.The target of controlled pressure drilling: keep the wellbore pressure in whole drilling process to be within pre-set target zone, realizes the constant of bottom pressure in drilling process.But, in the turn on pump of mechanical pump or the process of termination of pumping, easily disturbance is caused to bottom pressure, be difficult to keep the constant of bottom pressure, cause the reason of above unfavorable condition as follows: in termination of pumping process, the strokes per minute of mechanical pump directly reduces to 0, annular circulation is caused to press consumption to be reduced to 0 rapidly at short notice, cause self-choke manifold to have insufficient time to and compensate the bottom pressure change caused because of turn on pump, thus cause the fluctuation of bottom pressure, turn on pump process is contrary with termination of pumping, equally also causes bottom hole pressure surge.
Summary of the invention
the utility model provides a kind of slush pump discharge capacity staged output device in controlled pressure drilling, overcomes the deficiency of above-mentioned prior art, and it effectively can solve the constant problem that cannot keep bottom pressure that mechanical pump exists in turn on pump or termination of pumping process.
one of the technical solution of the utility model is realized by following measures: a kind of slush pump is discharge capacity staged output device in controlled pressure drilling, comprise feed tube, adjustable pipe, setting module and logic judgment module, feed tube and adjustable pipe are fixedly installed togather by threeway, feed tube is installed with traffic monitor module and the first switch valve, adjustable pipe is sequentially installed with second switch valve and choke valve, the signal output part of setting module is electrically connected with the first signal input part of logic judgment module, the signal output part of traffic monitor module is electrically connected with the secondary signal input of logic judgment module.
here is the further optimization and/or improvements to one of above-mentioned utility model technical scheme:
above-mentioned slush pump discharge capacity staged output device in controlled pressure drilling also comprises control module, choke valve is automatic throttle, the signal input part of control module is electrically connected with the signal output part of logic judgment module, and the signal output part of control module is electrically connected with the signal input part of automatic throttle.
above-mentioned traffic monitor module comprises flow meter, and the signal output part of flow meter is electrically connected with the secondary signal input of logic judgment module.
above-mentioned slush pump discharge capacity staged output device in controlled pressure drilling also comprises prying body, and feed tube, adjustable pipe and threeway are all fixed on prying body.
above-mentioned first switch valve and second switch valve are gate valve.
the utility model can make mechanical pump delivery in turn on pump and termination of pumping process in staged input well cylinder in controlled pressure drilling, so that self-choke manifold has sufficient time to the pressure change compensated because turn on pump and termination of pumping cause shaft bottom, make the maintain constant pressure of shaft bottom in turn on pump and termination of pumping process, for the enforcement of controlled pressure drilling technology provides technical support.
Accompanying drawing explanation
accompanying drawing 1 is the plan structure schematic diagram of embodiment 1.
accompanying drawing 2 is the control principle drawing of embodiment 1.
accompanying drawing 3 is the logic diagram of embodiment 2.
coding in accompanying drawing is respectively: 1 is feed tube, and 2 is adjustable pipe, and 3 is threeway, and 4 is the first switch valve, and 5 is second switch valve, and 6 is automatic throttle, and 7 is flow meter, and 8 is prying body.
Detailed description of the invention
the utility model by the restriction of following embodiment, can not determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in utility model, for convenience of description, the description of the relative position relation of each parts is all be described according to the Butut mode of Figure of description 1 in an embodiment, as: the position relationship of upper and lower, left and right etc. determines according to the Butut direction of Figure of description.
below in conjunction with embodiment, the utility model is further described:
embodiment 1: as shown in accompanying drawing 1 to 2, this slush pump discharge capacity staged output device in controlled pressure drilling comprises feed tube 1, adjustable pipe 2, setting module and logic judgment module, feed tube 1 and adjustable pipe 2 are fixedly installed togather by threeway 3, feed tube 1 is installed with traffic monitor module and the first switch valve 4, adjustable pipe 2 is sequentially installed with second switch valve 5 and choke valve, the signal output part of setting module is electrically connected with the first signal input part of logic judgment module, the signal output part of traffic monitor module is electrically connected with the secondary signal input of logic judgment module.Slush pump according to the present embodiment is discharge capacity staged output device in controlled pressure drilling, in controlled pressure drilling, mechanical pump delivery staged in turn on pump process can be made to export the present embodiment, thus make drilling fluid staged input in pit shaft, so that self-choke manifold has sufficient time to the pressure change compensated because turn on pump causes shaft bottom, make the maintain constant pressure of shaft bottom in turn on pump process, in like manner, mechanical pump delivery staged in termination of pumping process can be made to export the present embodiment, thus make drilling fluid staged input in pit shaft, so that self-choke manifold has sufficient time to the pressure change compensated because termination of pumping causes shaft bottom, make the maintain constant pressure of shaft bottom in termination of pumping process, for the enforcement of controlled pressure drilling technology provides technical support.Above-mentioned setting module and logic judgment module all adopt existing known technology.
here is the further optimization and/or improvements to above-mentioned slush pump discharge capacity staged output device in controlled pressure drilling:
as shown in accompanying drawing 1 to 2, slush pump discharge capacity staged output device in controlled pressure drilling also comprises control module, choke valve is automatic throttle 6, the signal input part of control module is electrically connected with the signal output part of logic judgment module, and the signal output part of control module is electrically connected with the signal input part of automatic throttle 6.Automatic throttle 6 combinationally uses the effect that can realize the mud flow rate automatically regulating adjustable pipe 2 with control module, improves the degree of regulation of flow, contributes for keeping the constant of bottom pressure.
as shown in Figure 1, traffic monitor module comprises flow meter 7, and the signal output part of flow meter 7 is electrically connected with the secondary signal input of logic judgment module.
as shown in Figure 1, slush pump discharge capacity staged output device in controlled pressure drilling also comprises prying body 8, and feed tube 1, adjustable pipe 2 and threeway 3 are all fixed on prying body 8.Mobile feed tube 1 and adjustable pipe 2 are convenient in the setting of prying body 8, improve the use flexibility of slush pump discharge capacity staged output device in controlled pressure drilling.
as required, the first switch valve 4 and second switch valve 5 are gate valve.
as shown in accompanying drawing 1 to 3, the using method of above-described embodiment slush pump discharge capacity staged output device in controlled pressure drilling, carries out: in setting module, set the flow input step of feed tube 1 in turn on pump process and termination of pumping process as follows, in turn on pump process, the flow input step of feed tube 1 is that the flow in feed tube 1 increases to 25 liters/second gradually from 0 liter/second, in termination of pumping process, the flow input step of feed tube 1 is that the flow in feed tube 1 is gradually reduced to 0 liter/second from 25 liters/second, threeway 3 and mechanical pump are fixedly installed togather, feed tube 1 is linked together by drilling tool with the standpipe in pit shaft, the outlet of adjustable pipe 2 and slurry tank are linked together, when needs start mechanical pump, open the first switch valve 4 and second switch valve 5, the aperture of choke valve is in the state of maximum opening, then, start mechanical pump, drilling fluid pumps in feed tube 1 and adjustable pipe 2 by threeway 3 by mechanical pump, the drilling fluid entered in feed tube 1 enters in pit shaft, the drilling fluid entered in adjustable pipe 2 enters in slurry tank, the flow input step of turn on pump process is sent to logic judgment module by setting module, the actual flow of the drilling fluid in traffic monitor module Real-time Collection feed tube 1, the actual flow of drilling fluid is sent to logic judgment module by traffic monitor module, in logic judgment module, the actual flow of drilling fluid compares with the flow of flow input step of the turn on pump process being in same time section, according to the actual flow of drilling fluid and the fiducial value of flow of flow input step of turn on pump process being in same time section, control the aperture of choke valve, the aperture of choke valve reduces gradually, until the actual flow of drilling fluid is identical with the flow of the flow input step of turn on pump process, when the actual flow of the drilling fluid in feed tube 1 is increased to 25 liters/second, close second switch valve 5, the drilling fluid that subsequent mechanical pump pumps into enters in pit shaft by feed tube 1, complete turn on pump, when needs close down mechanical pump, first switch valve 4 and second switch valve 5 are in opening, the aperture of choke valve is in the state of minimum aperture, the flow input step of setting feed tube 1 in termination of pumping process is sent to logic judgment module by setting module, the actual flow of the drilling fluid in traffic monitor module Real-time Collection feed tube 1, the actual flow of drilling fluid is sent to logic judgment module by traffic monitor module, in logic judgment module, the actual flow of drilling fluid compares with the flow of flow input step of the termination of pumping process being in same time section, according to the actual flow of drilling fluid and the fiducial value of flow of flow input step of turn on pump process being in same time section, control the aperture of choke valve, the aperture of choke valve increases gradually, until the actual flow of drilling fluid is identical with the flow of the flow input step of termination of pumping process, when the actual flow of the drilling fluid in feed tube 1 is reduced to 0 liter/second, close the first switch valve 4, close down mechanical pump, the drilling fluid that mechanical pump continues to pump into enters slurry tank by adjustable pipe 2, complete termination of pumping.Mechanical pump discharge capacity according to the present embodiment method that staged exports in controlled pressure drilling, in controlled pressure drilling, mechanical pump delivery staged in turn on pump process can be made to export slush pump discharge capacity staged output device in controlled pressure drilling, thus make drilling fluid staged input in pit shaft, so that self-choke manifold has sufficient time to the pressure change compensated because turn on pump causes shaft bottom, make the maintain constant pressure of shaft bottom in turn on pump process, in like manner, mechanical pump delivery staged in termination of pumping process can be made to export slush pump discharge capacity staged output device in controlled pressure drilling, thus make drilling fluid staged input in pit shaft, so that self-choke manifold has sufficient time to the pressure change compensated because termination of pumping causes shaft bottom, make the maintain constant pressure of shaft bottom in termination of pumping process, for the enforcement of controlled pressure drilling technology provides technical support.
as shown in accompanying drawing 1 to 3, be with one of difference of above-mentioned using method: when needs start mechanical pump, logic judgment module sends the signal of the aperture regulating automatic throttle 6 to control module according to the actual flow of drilling fluid and the fiducial value of flow of flow input step of turn on pump process being in same time section, the signal that control module gives according to logic judgment module, the signal regulating aperture is sent to automatic throttle 6, automatic throttle 6 is made to regulate aperture, the aperture of automatic throttle 6 reduces gradually, until the actual flow of drilling fluid is identical with the flow of flow input step of the turn on pump process being in same time section, when the actual flow of the drilling fluid in feed tube 1 is increased to 25 liters/second, close second switch valve 5, the drilling fluid that subsequent mechanical pump pumps into enters in pit shaft by feed tube 1, complete turn on pump, when needs close down mechanical pump, logic judgment module sends the signal of the aperture regulating automatic throttle 6 to control module according to the actual flow of drilling fluid and the fiducial value of flow of flow input step of termination of pumping process being in same time section, the signal that control module gives according to logic judgment module, the signal regulating aperture is sent to automatic throttle 6, automatic throttle 6 is made to regulate aperture, the aperture of automatic throttle 6 increases gradually, until the actual flow of drilling fluid is identical with the flow of flow input step of the termination of pumping process being in same time section, when the actual flow of the drilling fluid in feed tube 1 is reduced to 0 liter/second, close the first switch valve 4, close down mechanical pump, the drilling fluid that mechanical pump continues to pump into enters slurry tank by adjustable pipe 2, complete termination of pumping.Control module can the instruction that sends of high-speed receiving logic judgment module, automatic throttle 6 can perform the instruction that control module sends fast, realizing the effect of the mud flow rate automatically regulating adjustable pipe 2, improve the degree of regulation of flow, contributing for keeping the constant of bottom pressure.
be with two of the difference of above-mentioned using method: in turn on pump process, the flow of feed tube 1 gathers way as increase by 2 per second rises to 5 liters; In termination of pumping process, it is that minimizing 2 per second rises to 5 liters that the flow of feed tube 1 reduces speed.The flow of feed tube 1 gathers way or the flow minimizing speed of feed tube 1 compensates the required time according to the pressure change of self-choke manifold to shaft bottom and determines.
in sum, according to slush pump described in the utility model discharge capacity staged output device and using method thereof in controlled pressure drilling, in controlled pressure drilling, mechanical pump delivery can be made in turn on pump and termination of pumping process in staged input well cylinder, so that self-choke manifold has sufficient time to the pressure change compensated because turn on pump and termination of pumping cause shaft bottom, make the maintain constant pressure of shaft bottom in turn on pump and termination of pumping process, for the enforcement of controlled pressure drilling technology provides technical support.
above technical characteristic constitutes embodiment of the present utility model, and it has stronger compliance and implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
Claims (9)
1. slush pump discharge capacity staged output device in controlled pressure drilling, it is characterized in that comprising feed tube, adjustable pipe, setting module and logic judgment module, feed tube and adjustable pipe are fixedly installed togather by threeway, feed tube is installed with traffic monitor module and the first switch valve, adjustable pipe is sequentially installed with second switch valve and choke valve, the signal output part of setting module is electrically connected with the first signal input part of logic judgment module, and the signal output part of traffic monitor module is electrically connected with the secondary signal input of logic judgment module.
2. slush pump according to claim 1 discharge capacity staged output device in controlled pressure drilling, characterized by further comprising control module, choke valve is automatic throttle, the signal input part of control module is electrically connected with the signal output part of logic judgment module, and the signal output part of control module is electrically connected with the signal input part of automatic throttle.
3. slush pump according to claim 1 and 2 discharge capacity staged output device in controlled pressure drilling, it is characterized in that traffic monitor module comprises flow meter, the signal output part of flow meter is electrically connected with the secondary signal input of logic judgment module.
4. slush pump according to claim 1 and 2 discharge capacity staged output device in controlled pressure drilling, characterized by further comprising prying body, feed tube, adjustable pipe and threeway are all fixed on prying body.
5. slush pump according to claim 3 discharge capacity staged output device in controlled pressure drilling, characterized by further comprising prying body, feed tube, adjustable pipe and threeway are all fixed on prying body.
6. slush pump according to claim 1 and 2 discharge capacity staged output device in controlled pressure drilling, is characterized in that the first switch valve and second switch valve are gate valve.
7. slush pump according to claim 3 discharge capacity staged output device in controlled pressure drilling, is characterized in that the first switch valve and second switch valve are gate valve.
8. slush pump according to claim 4 discharge capacity staged output device in controlled pressure drilling, is characterized in that the first switch valve and second switch valve are gate valve.
9. slush pump according to claim 5 discharge capacity staged output device in controlled pressure drilling, is characterized in that the first switch valve and second switch valve are gate valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520832282.1U CN205135481U (en) | 2015-10-26 | 2015-10-26 | Slush pump is cascaded output device of discharge capacity in well drilling is pressed in accuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520832282.1U CN205135481U (en) | 2015-10-26 | 2015-10-26 | Slush pump is cascaded output device of discharge capacity in well drilling is pressed in accuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205135481U true CN205135481U (en) | 2016-04-06 |
Family
ID=55621286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520832282.1U Expired - Fee Related CN205135481U (en) | 2015-10-26 | 2015-10-26 | Slush pump is cascaded output device of discharge capacity in well drilling is pressed in accuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205135481U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257229A (en) * | 2015-10-26 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | Displacement stepped output device of mud pump in managed pressure drilling and application method of displacement stepped output device |
-
2015
- 2015-10-26 CN CN201520832282.1U patent/CN205135481U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257229A (en) * | 2015-10-26 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | Displacement stepped output device of mud pump in managed pressure drilling and application method of displacement stepped output device |
| CN105257229B (en) * | 2015-10-26 | 2018-03-27 | 中国石油集团西部钻探工程有限公司 | Slush pump discharge capacity staged output device and its application method in controlled pressure drilling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104963665A (en) | Bridge type concentric profile control water distribution device | |
| CN104594855A (en) | Shale gas high-pressure discharge and mining integrated skid-mounted device as well as discharge and mining technology and mounting method thereof | |
| CN105822259A (en) | Automatic control method for oil and gas well plunger gas lift production and plunger controller | |
| CN205135481U (en) | Slush pump is cascaded output device of discharge capacity in well drilling is pressed in accuse | |
| CN101994906A (en) | Flow stabilizing device | |
| CN111608580A (en) | Rotary steering intelligent instruction downloading system and method | |
| CN205154150U (en) | Pass device under rotatory steerable drilling instrument drilling fluid pulse signal | |
| CN105257229A (en) | Displacement stepped output device of mud pump in managed pressure drilling and application method of displacement stepped output device | |
| CN203925452U (en) | Down-hole magnetic control electric water distribution device | |
| CN110886585B (en) | Automatic throttle control device for back pressure compensation in drilling operation and use method thereof | |
| CN100410542C (en) | Dual control automatic water injection method for pump control and pump pressure flow | |
| CN202252208U (en) | Waterflow servo valve used for constant pressure | |
| CN204225808U (en) | Controlled pressure drilling mechanical pump is auxiliary stops pump installation and controlled pressure drilling device | |
| CN204627903U (en) | Slurry pump flow continuous adjustment system | |
| CN205804493U (en) | A kind of floor tap water hydraulic automatic regulating system | |
| CN1737377A (en) | Automatic water injection method using pump-control-pump to adjust pressure and flow | |
| CN213235027U (en) | Foam liquid adding control device for balance tank | |
| CN202493232U (en) | Drilling pressure control device | |
| CN103206180A (en) | System and method for controlling dropping speed of bottom-hole pressure of coal-bed gas well | |
| CN108343401A (en) | Energy-saving balancing device for beam-pumping unit | |
| CN204782959U (en) | Concentric profile control water distribution device of bridge type | |
| CN210940471U (en) | Additive manufacturing circulating cooling system based on large three-way pipe fitting | |
| CN204003391U (en) | Solid plunger sand-proof oil-well pump | |
| CN201444259U (en) | Flow-rate stabilizing device | |
| CN201437720U (en) | Proportional-control injecting system |
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: 20160406 Termination date: 20201026 |