CN104790892A - Automatic throttle pipe collector filtering device for pressure control drilling - Google Patents
Automatic throttle pipe collector filtering device for pressure control drilling Download PDFInfo
- Publication number
- CN104790892A CN104790892A CN201510192409.2A CN201510192409A CN104790892A CN 104790892 A CN104790892 A CN 104790892A CN 201510192409 A CN201510192409 A CN 201510192409A CN 104790892 A CN104790892 A CN 104790892A
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- CN
- China
- Prior art keywords
- mandrel
- filtering device
- spiral
- transmission shaft
- power transmission
- 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.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 27
- 238000001914 filtration Methods 0.000 title claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 abstract description 6
- 239000011435 rock Substances 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 241001672694 Citrus reticulata Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to an automatic throttle pipe collector filtering device for pressure control drilling. The automatic throttle pipe collector filtering device comprises a driving device (1), a coupler (2), a taper rotation breaking mandrel (5) fixedly connected with a transmission shaft (62), a fixed shaft (61) fixedly connected with the minor diameter end of the rotation breaking mandrel, a shell (4), a spiral seal assembly (70) and a spiral seal assembly (70a), wherein an inflow opening and an outflow opening are formed in the two ends of the shell (4) respectively, the spiral seal assembly (70) and the spiral seal assembly (70a) are connected with the shell through threads, a fixed spiral driving piece (53) is fixed to the outer surface of the rotation breaking mandrel, an end cover (6) and an end cover (6a) are arranged at the two ends of the rotation breaking mandrel, one end cover is provided with inflow through holes, and the other end cover is provided with outflow through holes. A part of fluid of returned drilling fluid and fine rock cuttings enter the inflow through holes and flow out of the outflow through holes, and remaining chunk rock cuttings are rotatably pulverized by the spiral driving piece and a groove formed by the spiral driving piece and the rotation breaking mandrel and flow out of gaps between the rotation breaking mandrel and the inner wall of the shell. Flow distribution is conducted on big rock cuttings and fine rock cuttings, so that the filtering device is prevented from being blocked by big rock cuttings, pressure fluctuation is reduced, and well control safety is guaranteed.
Description
Technical field
The present invention relates to a kind of controlled pressure drilling self-choke manifold fluid filtering device, this device mainly comprises drive unit, shaft coupling, power transmission shaft, the broken mandrel of rotation, is fixed on the spiral plectrum, housing, the helixseal assembly that rotate on broken mandrel.
Background technology
Along with the development of petroleum exploration in China development technique, self-contained, the bulk oil gas field of easily exploitation almost totally, so progressively to the Deep Oil And Gas Exploration resource development of difficulty exploitation.The drilling well drain spray of Deep Oil And Gas Exploration resource ubiquity stratum " narrow safe pressure window " caused by phenomenon of difficult exploitation is same deposits a difficult problem, and the stability of pressure becomes key factor.Progressively have developed in the industry controlled pressure drilling equipment in recent years and solve a Stress control difficult problem, but widely used self-choke manifold fluid filtering device is only made up of the cylinder of both sides band screen pack in controlled pressure drilling equipment, because design for filtration elements is too simple in actual application, little landwaste can only be filtered, not there is the function of broken landwaste.Meanwhile, because the design of refluence pore structure is unreasonable, easily produces larger pressure oscillation, cause the bulk debris blockage that strainer is returned out by shaft bottom, produce pressure and raise, the ill effect that pressure oscillation is large, affects well control safety.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of novel controlled pressure drilling self-choke manifold fluid filtering device, effectively can prevent the impact of bulk landwaste convection cell filter and flow monitoring, thus ensure well control safety, technical scheme is as follows:
This fluid filtering device is primarily of drive unit, shaft coupling, power transmission shaft, broken mandrel, fixed axis, housing, rotary sealing assembly and the adpting flange composition of rotation; Drive unit is fixedly connected with shaft coupling; Shaft coupling is fixedly connected with shaft coupling by power transmission shaft with the broken mandrel of rotation, and power transmission shaft is fastened on the broken mandrel one end of described rotation by welding or bolt, and the other end has the fixed axis by welding or being fixedly connected with; Rotating broken mandrel is arranged in described housing; Housing inlet port and outlet upwards have the short tube of welding, and adpting flange welds with short tube, and adpting flange comprises inlet flange and outlet(discharge) flange; Rotary sealing assembly is connected with described housing by screw thread.
The broken mandrel of above-mentioned rotation is hollow conical pipe, body is fixed with multiple equally distributed spiral plectrum; The miner diameter end rotating broken mandrel is welded with and the end cap rotating broken mandrel and match, end cap has multiple equally distributed enter opening; The bigger diameter end rotating broken mandrel is welded with the end cap matched, end cap has multiple equally distributed go out opening.The bigger diameter end external diameter rotating broken mandrel is less than housing inner diameter, namely leaves certain gap between bigger diameter end and inner walls, can be used for little landwaste and fluid to pass through.
Above-mentioned rotary sealing assembly comprises seal receptacle, static sealing ring, dynamic seal ring, joint ring, back-up ring, bearing and bearing (ball) cover.
Above-mentioned drive unit preferably variable-frequency motor, motor speed can regulate according to situ of drilling well drilling speed, rotating speed and drilling fluid displacement.
Above-mentioned housing two ends have entering head piece and going out head piece for drilling fluid turnover respectively, enter head piece on the right side rotating broken mandrel, go out head piece in the left side rotating broken mandrel.
Above-mentioned power transmission shaft is fixedly connected with spiral crushing mandrel, can connect, being convenient to the spiral crushing mandrel changing loss, can saving equipment when using bolt to connect for welding or bolt.
Returning out after drilling fluid enters enclosure interior, part fluid and fine rock chips enter opening by miner diameter end and enter, go out opening from bigger diameter end to return out, remainder fluid and bulk landwaste are under the rotation of broken mandrel, pulverized by the groove that spiral plectrum and the broken mandrel of rotation and spiral plectrum are formed and be brought into the bigger diameter end rotating broken mandrel, flow out by rotating the gap of presetting between the bigger diameter end of broken mandrel and inner walls, thus realize the shunt filtering returning out drilling fluid.
Compared with prior art, the present invention can solve in controlled pressure drilling process the following technical problem existed: (1) return out bulk landwaste that drilling fluid contains can choked flow gauge and, and flow monitoring to be had an impact; (2) large landwaste block is to the impact failure of choke valve; (3) owing to occurring that the filter that well wall dropping block causes blocks the well head pressure rising and the larger pressure oscillation of generation that cause.The present invention is safety, the efficient application of controlled pressure drilling, provides strong guarantee.
Accompanying drawing explanation
Fig. 1 is the structural representation according to the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with drawings and embodiments, the present invention is described in further detail.
As shown in Figure 1 controlled pressure drilling self-choke manifold fluid filtering device by drive unit 1, shaft coupling 2, power transmission shaft 62, rotate broken mandrel 5, fixed axis 61, helixseal assembly (70,70a), housing 4, inlet flange 31a, outlet(discharge) flange 31 form.Drive unit 1 is fixedly connected with described shaft coupling 2, shaft coupling 2 is fixedly connected with described power transmission shaft 62, the left end rotating broken mandrel 5 and right-hand member respectively with described power transmission shaft 62 and described fixed axis 61 by weld or bolt is fixedly connected with, described helixseal assembly (70,70a) be threaded connection with housing 4, helixseal assembly 70a is connected with fixed axis bearing, and power transmission shaft is fixedly connected with shaft coupling through helixseal assembly 70; It is inner that spiral crushing mandrel 5 is positioned at described housing 4, and left end and housing 4 inwall have default gap 10, and there is the end cap (6,6a) cooperatively interacted at two ends, and spiral crushing mandrel 5 is tapered hollow tube, and left end is bigger diameter end, and right-hand member is miner diameter end; End cap 6a has multiple equally distributed enter opening 51, end cap 6 has multiple equally distributed go out opening 52; The surface of spiral crushing mandrel 5 is fixed with multiple equally distributed spiral plectrum 53; The surface of housing 4 has to be positioned at and goes out head piece 7 on the left of described spiral crushing mandrel 5, and soffit has to be positioned at and enters head piece 8 on the right side of spiral crushing mandrel 5;
Outlet(discharge) flange 31, inlet flange 31a are welded on out head piece 7 respectively by short tube 9, short tube 9a and enter on head piece 8.
Return out drilling fluid to be returned out by entering opening and going out opening on broken mandrel by become a mandarin metastomium shunting body and little landwaste of housing; Large landwaste block enters spiral plectrum and rotates in the helicla flute that formed of broken mandrel, rotates broken mandrel and rotarily drives landwaste block and enter little annular space, and through clashing into, cutting, squeezing action, formation granule landwaste, is returned out by annular space.Preferably, drive unit 1 is variable-frequency motor, can regulate according to situ of drilling well drilling speed, rotating speed and drilling fluid displacement.Helixseal assembly 70 comprises seal receptacle 71, static sealing ring 72, dynamic seal ring 73, joint ring 74, back-up ring 75, bearing 81 and bearing (ball) cover 92, helixseal assembly 70a comprises seal receptacle 71a, static sealing ring 72a, dynamic seal ring 73a, joint ring 74a, back-up ring 75a, bearing 81a and bearing (ball) cover 91, solves cleaner for high-pressure drilling fluid and flows through and sealing problem in spiral crushing mandrel rotary course.
In sum, content of the present invention is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present invention, but this embodiment all comprises within the scope of the present invention.
Claims (3)
1. a controlled pressure drilling self-choke manifold fluid filtering device, it is characterized in that: comprise drive unit (1), shaft coupling (2), power transmission shaft (62), rotate broken mandrel (5), fixed axis (61), helixseal assembly (70,70a), housing (4), wherein
Described drive unit (1) is fixedly connected with described shaft coupling (2), described shaft coupling (2) is fixedly connected with described power transmission shaft (62), described power transmission shaft (62) is through described helixseal assembly (70) and be connected with described helixseal assembly (70) bearing, the left end of the broken mandrel of described rotation (5) is fixedly connected with described fixed axis (61) with described power transmission shaft (62) respectively with right-hand member, described helixseal assembly (70, 70a) be threaded connection with housing (4), described fixed axis (61) is connected with helixseal assembly (70a) bearing,
It is inner that described spiral crushing mandrel (5) is positioned at described housing (4), and have default gap (10) between the inwall of its left end and described housing (4);
The two ends of described spiral crushing mandrel (5) have the end cap (6,6a) cooperatively interacted respectively, and described spiral crushing mandrel (5) is tapered hollow tube, and left end is bigger diameter end, and right-hand member is miner diameter end;
Described end cap (6,6a) has multiple equally distributed through hole, and the upper through hole of described end cap (6a) is for entering opening (51), and the upper through hole of described end cap (6) is for going out opening (52);
The surface of described spiral crushing mandrel (5) is fixed with multiple equally distributed spiral plectrum (53);
The upper surface of described housing (4) have be positioned at described spiral crushing mandrel (5) left side go out head piece (7), soffit have be positioned at described spiral crushing mandrel (5) right side enter head piece (8).
2. controlled pressure drilling self-choke manifold fluid filtering device according to claim 1, is characterized in that: described drive unit (1) is variable-frequency motor.
3. controlled pressure drilling self-choke manifold fluid filtering device according to claim 1, is characterized in that: described power transmission shaft (62) welds with described spiral crushing mandrel (5) being or bolt is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192409.2A CN104790892A (en) | 2015-04-21 | 2015-04-21 | Automatic throttle pipe collector filtering device for pressure control drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192409.2A CN104790892A (en) | 2015-04-21 | 2015-04-21 | Automatic throttle pipe collector filtering device for pressure control drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104790892A true CN104790892A (en) | 2015-07-22 |
Family
ID=53556028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510192409.2A Pending CN104790892A (en) | 2015-04-21 | 2015-04-21 | Automatic throttle pipe collector filtering device for pressure control drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104790892A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027364A (en) * | 2020-11-06 | 2021-06-25 | 长江大学 | Automatic separation and cleaning device and method for drilling rock debris |
| US11905771B2 (en) | 2021-10-22 | 2024-02-20 | Saudi Arabian Oil Company | Method and equipment for crushing debris in drilling fluids |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1129204A (en) * | 1997-07-10 | 1999-02-02 | Kurimoto Ltd | Refuse feeding equipment for fluidized bed incinerator |
| CN201121052Y (en) * | 2007-11-30 | 2008-09-24 | 王雪源 | Double helix feeder |
| MY138555A (en) * | 2003-06-02 | 2009-06-30 | Jgc Corp | High-pressure treatment apparatus and method for operating high-pressure treatment apparatus |
| CN201338846Y (en) * | 2008-08-08 | 2009-11-04 | 苏州汇通机械设备有限公司 | Variable-pitch shaftless screw conveyer |
| CN201574941U (en) * | 2009-11-06 | 2010-09-08 | 上海凯泉泵业（集团）有限公司 | Hollow single-screw pump |
| CN103615209A (en) * | 2013-11-14 | 2014-03-05 | 盐城市大冈石油工具厂有限责任公司 | Throttling and pressure regulating filter |
| CN204571892U (en) * | 2015-04-21 | 2015-08-19 | 中国石油集团渤海钻探工程有限公司 | Controlled pressure drilling self-choke manifold fluid filtering device |
-
2015
- 2015-04-21 CN CN201510192409.2A patent/CN104790892A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1129204A (en) * | 1997-07-10 | 1999-02-02 | Kurimoto Ltd | Refuse feeding equipment for fluidized bed incinerator |
| MY138555A (en) * | 2003-06-02 | 2009-06-30 | Jgc Corp | High-pressure treatment apparatus and method for operating high-pressure treatment apparatus |
| CN201121052Y (en) * | 2007-11-30 | 2008-09-24 | 王雪源 | Double helix feeder |
| CN201338846Y (en) * | 2008-08-08 | 2009-11-04 | 苏州汇通机械设备有限公司 | Variable-pitch shaftless screw conveyer |
| CN201574941U (en) * | 2009-11-06 | 2010-09-08 | 上海凯泉泵业（集团）有限公司 | Hollow single-screw pump |
| CN103615209A (en) * | 2013-11-14 | 2014-03-05 | 盐城市大冈石油工具厂有限责任公司 | Throttling and pressure regulating filter |
| CN204571892U (en) * | 2015-04-21 | 2015-08-19 | 中国石油集团渤海钻探工程有限公司 | Controlled pressure drilling self-choke manifold fluid filtering device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027364A (en) * | 2020-11-06 | 2021-06-25 | 长江大学 | Automatic separation and cleaning device and method for drilling rock debris |
| US11905771B2 (en) | 2021-10-22 | 2024-02-20 | Saudi Arabian Oil Company | Method and equipment for crushing debris in drilling fluids |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150722 |