CN1237254C - Mud circulation system - Google Patents
Mud circulation system Download PDFInfo
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- CN1237254C CN1237254C CN 02123782 CN02123782A CN1237254C CN 1237254 C CN1237254 C CN 1237254C CN 02123782 CN02123782 CN 02123782 CN 02123782 A CN02123782 A CN 02123782A CN 1237254 C CN1237254 C CN 1237254C
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- pump
- mud
- valve
- centrifugal pump
- centrifugal
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Abstract
The present invention relates to a mud circulating system which is suitable for mud circulating operation in the drilling of oil wells and water wells. A centrifugal pump with low pressure and large pump capacity and a reciprocating piston pump with high pressure and small pump capacity are connected in parallel between a mud pit and a main circulating pipe. The reciprocating piston pump can be also be replaced by a centrifugal pump, namely to arrange two centrifugal pumps. Valves are controlled to be open and closed to realize the series connection or the parallel connection of the two centrifugal pumps. Hydraulic transmission is utilized to drive the reciprocating piston pump and the centrifugal pump, and a hydraulic circuit is utilized to realize the stepless speed regulation of the reciprocating piston pump and the centrifugal pump. The mud circulating system can satisfy the mud circulating operation of various oil wells and water wells and can solve the problem of mud circulation with low pressure and large pump capacity in the drilling of wells with large well bores without using a plurality of well drilling pumps.
Description
(1) technical field
The present invention relates to a kind of mud circulating system, be applicable to mud circulation operation in oil well, the well probing.
(2) background technology
Mud circulating system is the drilling equipment essential important component, it is in oil well, well drilling operation, by power unit input power drive borehole pump, the ground high pressure pipe joint is crossed in the drilling fluid pump warp let-off, flow through standpipe, hose, water tap, drilling rod, drill bits etc. reach the shaft bottom, carry the shaft bottom and bore broken debris flow and turn back to ground through the annular space of the drilling rod and the borehole wall.Drilling fluid is pumped into the shaft bottom again and circulates repeatedly after purified treatment, for drill bit is created good working environment in the shaft bottom.The mud circulating system of prior art all adopts reciprocating piston pump as borehole pump, as " drilling technology handbook (five) (petroleum industry publishing house) chapter 8, " oil drilling and r eoovery machine " (petroleum industry publishing house) chapter 7 point out that all it is reciprocating piston pump that borehole pump is used for the citation form that the drilling mud circulation time adopts.Reciprocating piston pump is that pressure is big, discharge capacity is little with respect to the characteristics of other force (forcing) pump, therefore the mud circulating system of prior art adopts two or two above reciprocating piston parallels connection of pumps uses usually, satisfies the requirement of mud displacement in oil well, the well mud circulation.Power adopts motor to drive the reciprocating piston pump main axis rotation by machine driving.
The mud circulating system of prior art promptly carries in high pressure, the float amount mud circulation effect better in the mud circulation of conventional well [borehole diameter 17.78～33.02 centimetres (7～13 inches)] or slim-hole [borehole diameter 17.78 centimetres (7 inches) below] probing, but when being applied in the mud circulation of big hole [borehole diameter 33.02 centimetres (13 inches) more than] probing, because discharge capacity is big, need the use in parallel of many reciprocatings piston pump, cause mechanism's complexity, mounting arrangement difficulty.In addition, this mud circulating system medium power transmission adopts motor to drive the reciprocating piston pump main axis rotation by machine driving, and the adjustment of reciprocating piston pumpage realizes complicated operation by the cylinder sleeve of changing different-diameter.
(3) summary of the invention
The technical problem to be solved in the present invention provides a kind of mud circulation operation that can realize high pressure, float gauging well, well, can realize low pressure, big discharge capacity mud circulation operation again, and use equipment is few, and can easily adjust the mud circulating system of borehole pump discharge capacity.
The technical solution used in the present invention is: mud circulating system adopts the configuration of two bench drill well pumps, the reciprocating piston pump of the centrifugal pump of low pressure, big discharge capacity and high pressure, little discharge capacity is connected in parallel between mud pit and circulation Trunk Line, mud by after the borehole pump pressurization successively by Trunk Line, standpipe, hose, water tap, drilling rod, flow to drill bit, inject into well.Two pipelines in parallel and the Trunk Line that connect centrifugal pump, reciprocating piston pump respectively all are equipped with valve control break-make.In power transmission, adopt motor to order about two hydraulic motors and drive reciprocating piston pump and centrifugal pump respectively, realize the stepless speed regulation of reciprocating piston pump and centrifugal pump, and then regulate the discharge capacity of mud system by the HYDRAULIC CONTROL SYSTEM loop by hydraulic drive.
When this mud circulating system is applied to low pressure, big discharge capacity mud circulation operation, centrifugal pump work during normal circulation, reciprocating piston pump is as interim stand by pump, because centrifugal pump is much bigger with respect to the reciprocating piston pumpage, can satisfy the requirement of various mud displacements, therefore can satisfy the requirement of low pressure, big discharge capacity.When the centrifugal pump fault, can use the reciprocating piston pump work temporarily.When under handling situations such as special formation creeps into, needing higher mud pressure, use the reciprocating piston pump work, to satisfy the requirement of high-pressure delivery.
When this mud circulating system is applied to high pressure, the operation of float amount mud circulation, use reciprocating piston pump to meet the demands, centrifugal pump can be used as interim stand by pump.
The present invention also provides a kind of mud circulating system, its technical scheme is: adopt the configuration of two bench drill well pumps, two bench drill well pumps all adopt centrifugal pump, be connected between mud pit and the circulation Trunk Line by pipeline respectively, mud by after the borehole pump pressurization successively by Trunk Line, standpipe, hose, water tap, drilling rod, flow to drill bit, inject into well.Connect respectively valve control break-make is installed on the pipeline of two centrifugal pumps and the Trunk Line, between the import and export of two centrifugal pumps, connect a valve, and a valve also is installed respectively in the import department of every centrifugal pump, control the break-make of these valves, can realize two kinds of connections of serial or parallel connection of two centrifugal pumps, when needs low pressure, big flow mud circulation operation, employing is connected in parallel, when needs high pressure, the operation of low discharge mud circulation, employing is connected in series.In power transmission, adopt motor to order about two hydraulic motors and drive reciprocating piston pump and centrifugal pump respectively by hydraulic drive, by the stepless speed regulation of HYDRAULIC CONTROL SYSTEM loop realization reciprocating piston pump and centrifugal pump, and then the discharge capacity of regulating mud circulating system.
Above-mentioned two kinds of mud circulating systems can also connect a reflux pipeline and connect a grouting pipeline on Trunk Line between Trunk Line and mud pit, and mounted valve is controlled break-make respectively.The effect of reflux pipeline setting is: because circulating mud can not inject in well from drilling rod when unloading single operation, centrifugal pump can quit work, but owing to need diversion after the centrifugal pump termination of pumping when restarting, take a lot of work during operating cost, therefore a reflux pipeline is installed, under the situation of not termination of pumping of centrifugal pump, realize mud low discharge circulation between reflux pipeline, mud pit.The effect of grouting pipeline is that probing runs into sandy stratum or other reasons, because mud permeates the ground when causing the mud loss, behind the additional mud, directly pours into mud by the grouting pipeline in well in mud pit, guarantees the mud circulating system operate as normal.
The present invention is owing to adopt a centrifugal pump and reciprocating piston pump configuration in parallel or two centrifugal pump serial or parallel connection configurations, can satisfy the mud circulation operation of various oil wells, well, particularly need not use the work of many bench drills well pump just can solve the low pressure in the probing of big hole well, big discharge capacity mud circulation problem, simplified mud circulating system, adopt fluid motor-driven reciprocating piston pump, centrifugal pump, made things convenient for the adjusting of mud circulation discharge capacity.
The invention will be further described below in conjunction with drawings and Examples.
(4) description of drawings
Fig. 1 is the mud circulating system schematic diagram of embodiment one
Fig. 2 is the mud circulating system schematic diagram of embodiment two
Fig. 3 is a fluid motor-driven reciprocating piston pump drive schematic diagram among the embodiment one
Fig. 4 is a fluid motor-driven centrifugal pump transmission schematic diagram among embodiment one or the embodiment two
(5) specific embodiment
Embodiment one:
As shown in Figure 1, centrifugal pump 2, reciprocating piston pump 1 are connected between mud pit 5 and the Trunk Line 6 by valve 3, valve 4, pipeline, pipe fitting etc. respectively, formation is connected in parallel, mounted valve 7 on the Trunk Line 6, also connect a reflux pipeline 8 between Trunk Line 6 and the mud pit 5, connect a grouting pipeline 9 on the Trunk Line 6, difference mounted valve 10, valve 11 on reflux pipeline 8, the grouting pipeline 9, Trunk Line 6 links to each other successively with mud standpipe 12, hose 13, water tap 14, and the mud that water tap 14 flows out injects into well by drilling rod 15, drill bit 16.
The course of work:
When mud circulating system is applied to conventional well or slim-hole oil, well probing, owing to require the mud circulation that flow is little, pressure is big, reciprocating piston pump 1 work at this moment, centrifugal pump 2 is not worked.Valve 3, valve 10, valve 11 are closed, valve 4, valve 7 are opened, start reciprocating piston pump 1, mud is sucked after pressurization by piston pump 1 through filter 18 from mud pit 5 and injects into well through Trunk Line 6, standpipe 12, hose 13, water tap 14 to drilling rod 15, drill bit 16 successively, the mud that injects into well is routed up inflow mud pit 5 from the shaft bottom to well head under the effect that well is pressed, form mud circulation.
When mud circulating system is applied to big hole oil, well probing, require the mud circulation that flow is big, pressure is little, centrifugal pump 2 work at this moment, reciprocating piston pump 1 is not worked.Valve 4, valve 10, valve 11 are closed, and valve 3, valve 7 are opened, and start centrifugal pump 2, and mud is sucked through injecting into well through Trunk Line 6 grades successively after the pressurization by centrifugal pump 2 through filter 17 from mud pit 5.When unloading single operation, mud circulation can not inject into well from drilling rod, at this moment should stop circulation, but, start relatively difficulty because centrifugal pump needs diversion when restarting after quitting work, for guaranteeing when unloading single operation, not stop centrifugal pump, at this moment open valve 10, valve-off 7 is adjusted the work of centrifugal pump 2 float amounts, mud flows into mud pit 5 through valve 10, reflux pipeline 8, forms mud circulation.When under handling situations such as special formation creeps into, needing higher mud pressure, stop centrifugal pump 2 work, start reciprocating piston pump 1 work.
The effect of grouting pipeline 9 is to run into sandy stratum or other situations in probing, because mud permeates the ground when causing the mud loss, replenishes mud in mud pit 5, opens valve 11, directly in well, pour into mud by grouting pipeline 9, guarantee that mud circulating system can operate as normal.
Referring to Fig. 3, Fig. 4, the power transmission of mud circulating system is that motor 22 connects a band pump box 23, band pump box 23 drives hydraulic pump 24, hydraulic pump 27, hydraulic pump 24 and hydraulic pump 27 drive hydraulic motor 25 and hydraulic motor 28 respectively, and hydraulic motor 25 drives reciprocating piston pump 1, hydraulic motor 28 by 2 work of shaft coupling 29 driving centrifugal pumps by belt drive unit 26.
Embodiment two:
Change the reciprocating piston pump among the embodiment one 1 into centrifugal pump 2A, as shown in Figure 2, between the outlet of the import of centrifugal pump 2 and centrifugal pump 2A, connect a valve 21, and at the import of centrifugal pump 2 and centrifugal pump 2A mounted valve 19, valve 20 respectively, the serial or parallel connection that promptly constitutes two centrifugal pumps connects.When mud circulation needs big flow, low-pressure conveying, adopt centrifugal pump 2 and centrifugal pump 2A to be connected in parallel, promptly valve 21 is closed, and valve 3, valve 4, valve 19, valve 20 are opened, and valve 7 is opened, and valve 10, valve 11 are closed.Start centrifugal pump 2, centrifugal pump 2A work, centrifugal pump 2, centrifugal pump 2A suck mud by strainer 17, strainer 18 respectively, pressurized after the Trunk Line 6 of mud, standpipe 12, hose 13, water tap 14, drilling rod 15, drill bit 16 inject into well, mud in the well is under the effect that well is pressed, rout up to well head from the shaft bottom, flow into mud pit 5, form mud circulation.When mud circulation needs low discharge, high-pressure delivery, adopt centrifugal pump 2 and centrifugal pump 2A to be connected in series, at this moment open valve 21, valve 3, valve 20, valve-off 4, valve 19, open valve 7, mud injects into well through Trunk Line 6, standpipe 12, hose 13, water tap 14, drilling rod 15, drill bit 16 after pressurizeing through filter 18, centrifugal pump 2A, centrifugal pump 2 two-stages successively from mud pit 5.
The setting of reflux pipeline 8, grouting pipeline 9 and effect are with reflux pipeline among the embodiment one and grouting pipeline.
The power transmission of mud circulating system adopts motor by hydraulic drive, orders about two hydraulic motors and drives two centrifugal pumps respectively, and as shown in Figure 4, its drive mechanism is identical with hydraulic motor 28 driving centrifugal pumps 2 work among the embodiment one with mode.
Claims (3)
1, a kind of mud circulating system, by actuating unit, closed circuit is formed, closed circuit is by borehole pump, mud pit (5), Trunk Line (6), standpipe (12), hose (13), water tap (14), drilling rod (15), drill bit (16) and pipeline fittings, valve constitutes, it is characterized in that: the borehole pump of described closed circuit adopts a reciprocating piston pump (1) and a centrifugal pump (2) configuration, reciprocating piston pump (1) and centrifugal pump (2) pass through pipeline between mud pit (5) and Trunk Line (6), valve (4), valve (3), pipe fitting is connected in parallel, Trunk Line (6) is gone up mounted valve (7), described actuating unit is that motor (22) drives a band pump box (23), band pump box (23) drives hydraulic pump (24) and hydraulic pump (27), hydraulic pump (24) and hydraulic pump (27) drive hydraulic motor (25) and hydraulic motor (28) respectively, and hydraulic motor (25) is connected by machine driving with hydraulic motor (28) and drives reciprocating piston pump (1) and centrifugal pump (2) respectively.
2, a kind of mud circulating system, by actuating unit, closed circuit is formed, closed circuit is by borehole pump, mud pit (5), Trunk Line (6), standpipe (12), hose (13), water tap (14), drilling rod (15), drill bit (16) and pipeline fittings, valve constitutes, it is characterized in that: the borehole pump of described closed circuit adopts centrifugal pump (2A) and centrifugal pump (2) configuration, centrifugal pump (2A) and centrifugal pump (2) pass through pipeline between mud pit (5) and Trunk Line (6), valve (4), valve (3), pipe fitting is connected in parallel, Trunk Line (6) is gone up mounted valve (7), between the outlet of centrifugal pump (2) import and centrifugal pump (2A), connect a valve (21), import department's difference mounted valve (19) and valve (20) at centrifugal pump (2) and centrifugal pump (2A), described actuating unit is that motor (22) drives a band pump box (23), band pump box (23) drives hydraulic pump (24) and hydraulic pump (27), hydraulic pump (24) and hydraulic pump (27) drive hydraulic motor (25) and hydraulic motor (28) respectively, and hydraulic motor (25) is connected by machine driving with hydraulic motor (28) and drives centrifugal pump (2A) and centrifugal pump (2) respectively.
3, mud circulating system as claimed in claim 1, it is characterized in that: described mud circulating system comprises that also one is connected the reflux pipeline (8) between Trunk Line (6) and the mud pit (5) and is connected on the Trunk Line (6) one grouting pipeline (9), is separately installed with valve (10), valve (11) on the reflux pipeline (8) and the pipeline (9) that is in the milk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02123782 CN1237254C (en) | 2002-06-28 | 2002-06-28 | Mud circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02123782 CN1237254C (en) | 2002-06-28 | 2002-06-28 | Mud circulation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1465844A CN1465844A (en) | 2004-01-07 |
| CN1237254C true CN1237254C (en) | 2006-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02123782 Expired - Fee Related CN1237254C (en) | 2002-06-28 | 2002-06-28 | Mud circulation system |
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| Country | Link |
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| CN (1) | CN1237254C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133461A (en) * | 2010-01-22 | 2011-07-27 | 上海体育学院 | Mud pool used for physical training of athletes |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392321C (en) * | 2005-11-03 | 2008-06-04 | 中国兵器科学研究院宁波分院 | Brown gas type integrated solid waste incinerator |
| CN103244065B (en) * | 2012-02-10 | 2016-01-20 | 上海外高桥造船有限公司 | Wellhead slurry reflux and drilling mud circulation test macro |
| CN102848475B (en) * | 2012-09-26 | 2014-09-17 | 天津二建建筑工程有限公司 | Environment-friendly complete-set mud cycling replacing processing system |
| CN104763607A (en) * | 2015-02-16 | 2015-07-08 | 于长和 | Combined diaphragm pump |
| CN106014302A (en) * | 2016-05-30 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | Operation method achieved through automatic grouting and drilling fluid circulating system |
| CN107780858A (en) * | 2016-08-26 | 2018-03-09 | 无锡润利建设工程有限公司 | A kind of orientation drill mud circulating system |
-
2002
- 2002-06-28 CN CN 02123782 patent/CN1237254C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133461A (en) * | 2010-01-22 | 2011-07-27 | 上海体育学院 | Mud pool used for physical training of athletes |
| CN102133461B (en) * | 2010-01-22 | 2014-07-09 | 上海体育学院 | Mud pool used for physical training of athletes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1465844A (en) | 2004-01-07 |
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Granted publication date: 20060118 Termination date: 20100628 |