CN2683830Y

CN2683830Y - Automatic mud pouring installation for well drilling

Info

Publication number: CN2683830Y
Application number: CN 200420033183
Authority: CN
Inventors: 冉训; 冯江萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-12
Filing date: 2004-03-12
Publication date: 2005-03-09
Anticipated expiration: 2014-03-12

Abstract

The utility model belongs to an automatic mud pouring device for well drilling, comprising a master controller, a winch barrel, an angle displacement measurer, a hydraulic pressure spiral direction measurer, a mud jar with a stirrer, an ultrasonic liquid level monitor with an isolating pipe of the mud pot, a mud pouring mechanism containing a mud pump, a motor and a digital electric-control box, an overflowed drilling mud returning jar and an overflow quantity measuring instrument. The utility model confirms the quantity of the poured mud by using the angle displacement measurer and the spiral direction measurer of a drill starting pillar to measure the drill starting pillar; simultaneously, the automatic mud pouring to a well barrel, the monitoring of the overall process of pouring, well-timed shutdown or alarm are carried by a host machine, the liquid level monitor, the mud pouring mechanism and the overflow quantity measuring instrument. Therefore, the utility model can supplement the mud in the well automatically and accurately when starting drilling, having the advantages of balancing stratum pressure, blowout prevention, short time for drill starting, high productivity, high reliability, leakage missing prevention, pouring mistake prevention, etc.

Description

Drilling well automatically pouring mud device

Technical field

The utility model belongs in oil, natural gas exploration and the geological drilling process, the automatic filling drilling well device of mud (drilling fluid) in well.Particularly a kind ofly be mainly used in when pulling out of hole in well off set drilling mud (drilling fluid) automatically, thereby reach equilibrium strata pressure, the automatic filling device of effects such as pre-well blowout preventing.

Background technology

At present, at oil, gas field exploration, in the geological drilling process, for equilibrium strata pressure, pre-well blowout preventing etc.In trip-out process, when mentioning drilling tool, the pit shaft liquid level will descend, and its falling head is directly proportional with the quantity (length) of trip-out column, also the volume with the trip-out column is suitable and the drilling well that should replenish is with the volume of mud, and injects in the pit shaft by the mud device for casting.Conventional drilling mud device for casting comprises the slurry tank and the leve monitor thereof of master controller (main Monitoring and Controlling machine), belt stirrer, comprises the filling mechanism of slush pump, motor, electric control box and flow transmitter, the overflow gigback.The column number that trips out by artificial calculating when its method for filling is trip-out, send the mud volume that perfusion is instructed and needed to inject to filling mechanism after importing host process then, through slush pump and the flow transmitter of being located at its pumping hole carry out, metering, simultaneously information is returned the feedback main frame to control its groundwater increment; But because mud fluid viscosity height easily causes the flow meter pipeline to stop up; Thereby on slurry tank, establish a leve monitor again, and the slippage signal of its liquid level is returned feedback to main frame, reach and the purpose of the common accurately monitoring of flow transmitter drilling mud groundwater increment with expectation.This device, very easily produces and leaks meter or misdescription because of the dried of well site various factors scratched owing to adopt the artificial trip-out column number that calculates; The variation of the supersonic liquid level monitor monitors liquid level that employing is monitored the liquid level of whole free floating in the slurry tank, liquid forms the swirl shape eddy current under the effect of agitator, liquid level is uneven, waveform is mixed and disorderly, its back wave is difficult to be received device and accurately receives, and mud liquid easily produces foam under stirring in addition, will make the monitored data distortion again from the signal of foam upper end reflected back, thereby very difficult the cooperation with flow transmitter reaches its purpose.Therefore, this mud device for casting exists drilling mud groundwater increment accuracy, poor reliability, easily because of miscalculation, omission, flow transmitter is malfunctioning and the distortion of slurry tank level monitoring, irritate or mistake is irritated and cause Lou, and the disadvantages of bringing thus such as adverse consequences.

Summary of the invention

The purpose of this utility model is the disadvantage that exists at background technology, improve a kind of drilling well of design automatically pouring mud device, to reach automatically according to the trip-out strut length, determine and control drilling mud groundwater increment, avoid Lou irritating, irritate by mistake and take place, strata pressure in the active balance trip-out process, the generation of prevention gas blowout accident, boost productivity, purpose such as ensure safety in production.

Solution of the present utility model is on basis of background technology, set up an angle displacement measurement counter in the end of winch drum shaft, measuring the length of each trip-out column exactly by the displacement that makes progress of monitoring tourist bus, and with this length parameter input main frame to determine the groundwater increment of drilling mud; The supersonic liquid level monitor that has the isolated tube that is communicated with the drilling fluid bottom is installed in slurry tank simultaneously, replacing mud pump flow quantity sensor and the slurry tank liquid level leve monitor in the background technology, thereby guarantee accuracy and reliability to the slurry tank level monitoring; Set up the spillway discharge measuring instrument on bleed off pipe, the amount of returning of the monitoring mud that pours into and time and state and the spillway discharge that whether returns by overflow are with reliability and the safety of further guaranteeing the mud filling process.Therefore the utility model comprises master controller, the slurry tank of belt stirrer and leve monitor thereof, and the mud filling mechanism contains bleed off pipe and overflow and returns jar at interior overflow gigback; Key is that this device also has additional the angle displacement measurement device that can monitor winch rotating cylinder angular displacement and cooperates hydraulic tongs or the tongs hydraulic pressure rotation direction measuring appliance of counting instruction to send with it; The slurry tank leve monitor then for having the anti-dried supersonic liquid level monitor of scratching of an isolated tube that is communicated with the drilling fluid bottom, also is provided with a spillway discharge measuring instrument in the overflow gigback; The angle displacement measurement device is connected with the master controller input interface by data/address bus, and is connected with acquired signal with winch drum by the two ends of its power transmission shaft, and the spillway discharge measuring instrument is located on the bleed off pipe, and hydraulic pressure rotation direction measuring appliance then is anchored on the derrick base; The control signal input of digital electric control box and supersonic liquid level monitor spillway discharge measuring instrument in the mud filling mechanism, the signal output part of hydraulic tongs or tongs rotation direction measuring appliance also is connected with the output and the input interface of master controller respectively by data/address bus, and hydraulic pressure rotation direction measuring appliance is connected with received signal with tongs or hydraulic tongs by the tail rope chest expander; And the import of the mud of mud filling mechanism outlet and bleed off pipe in use still with former well head on the anti-overflow pipe connect.Above-mentioned mud filling mechanism comprises slush pump, motor and digital electric control box thereof.And described angle displacement measurement device is the angular displacement count measurement device that comprises photoelectric encoder and gear drive.Hydraulic tongs and tongs hydraulic pressure rotation direction measuring appliance are the hydraulic pressure rotation direction measuring appliance that comprises pressure sensor, photoelectric encoder and tail rope chest expander.The spillway discharge measuring instrument then returns the volume digital measuring instrument for containing automatically reset wig-wag and photoelectric encoder of turnover plate type in interior overflow.

The utility model is owing to adopt the angle displacement measurement device to cooperate with tongs or hydraulic tongs rotation direction measuring appliance, and determine through the thread rotary orientation measuring appliance on the basis of trip-out column original position, measure the length of trip-out column automatically and accurately by the winch drum anglec of rotation and girth thereof, and then determine the amount of the drilling mud that need replenish and send the grouting instruction to the mud filling mechanism by master controller; Return flowmeter by supersonic liquid level monitor and overflow simultaneously its each groundwater increment and perfusion state are monitored, and shut down or/and report to the police by master controller or instruction mud filling mechanism according to mud amount that pours into automatically and overflow situation.Therefore, the utlity model has can when pulling out of hole, realize automatically, accurate mud in the additional well, with equilibrium strata pressure, pre-well blowout preventing, reduce the trip-out time, boost productivity, and the dependability height, can effectively avoid irritating, characteristics such as filling by mistake with Louing.

Accompanying drawing and description of drawings

Fig. 1 is the utility model structure and user mode schematic diagram;

Fig. 2 is an automatically pouring mud electrical equipment control block diagram.

Among the figure: 1, master controller, 2, the angle displacement measurement device, 3, hydraulic pressure rotation direction measuring appliance, 3-1, tail rope, 4, the drilling mud overflow returns jar, flowmeter is returned in 4-1, overflow, 4-2, bleed off pipe, 5, slurry tank, 5-1, supersonic liquid level monitor, 5-2, agitator, 6, mud filling mechanism, 6-1, digital electric control box, 6-2, motor, 6-3, slush pump, 6-4, slurry pipeline, 7, data/address bus, 8, anti-overflow pipe, 9, winch drum, 10, operating desk, 11, tongs, 12, drilling rod (column), 13, elevator.

Embodiment

Present embodiment main frame 1 adopts band PCI-8310,12, A/D modular converter, the industrial computer of PCI-8450, DI input module and PCI-8407, DO output module, and model is DPC-5020; And is connected with the digital electric control box 6-1 of angle displacement measurement device 2, hydraulic pressure rotation direction measuring appliance 3, leve monitor 5-1, spillway discharge measuring instrument 4-1 and mud filling mechanism by STD data/address bus 7, with the reception data-signal with send control instruction.Angle displacement measurement device 2, range are 0～999 circle; When using, tongs hydraulic pressure rotation direction measuring appliance 3 is connected with the tail rope of tongs 11 by the tail rope chest expander, model is DN-01-00, transducer range is 0～6Mpa, extra fine grade, all the E6CP-AG5C photoelectric encoder by separately converts angular displacement and rotation direction signal to data-signal and is sent to main frame 1 respectively.Supersonic liquid level monitor 5-1, present embodiment employing application number is 03249928.0 ultrasonic monitor device, and sensor model number is Q45ULIU64BCR, and range is 0～3m, 0.25 grade of precision, isolating cylinder diameter phi 150mm.It is the turnover panel wig-wag that automatically resets that flowmeter 4-1 is returned in overflow, and model is NCC-02.The automatic starter controller of anti-explosion is electromagnetic that digital electric control box 6-1 model in the mud filling mechanism 6 is BQC53-40, motor 6-2 power 11KW, slush pump 6-3 flow 80m ³/ h, lift 23m, carrier pipe 6-4 internal diameter φ 75mm.All the other slurry tanks 5 and agitator 5-2, the drilling mud overflow return jars 4 and the diameter of bleed off pipe 4-2 etc. all same with background technology.

During present embodiment work, main frame 1 is by angle displacement measurement device 2, and the corresponding data that tongs hydraulic pressure rotation direction measuring appliance 3 collects then instructs starter controller (digital electric control box) 6-1 starting motor 6-2 and slush pump 6-3 to work, and pours into mud in pit shaft; Return flowmeter 4-1 monitoring filling process by supersonic liquid level monitor 5-1 and overflow simultaneously, liquid level decline puts in place in the slurry tank 5 when leve monitor 5-1 collects, and the signal (data) that returns flowmeter 4-1 that overflows also represents have mud to return, and then main frame 1, instruction mud filling mechanism 6 are shut down; And the signal indication grouting amount of returning feedback when leve monitor 5～1 puts in place and overflow is returned flowmeter 4-1 and do not had the mud inverse signal; or the liquid level that monitors of leve monitor 5-1 is not when reaching grouting amount required amount; and overflow is returned data that flowmeter 4-1 returns feedback and is shown a large amount of drilling muds and return, and then reports to the police or shuts down and report to the police.Thereby realize drilling mud automatic filling, realization equilibrium strata pressure, pre-well blowout preventing, effectively avoid purposes such as Lou filling, mistake filling.

Claims

1, a kind of drilling well automatically pouring mud device comprises master controller, the slurry tank of belt stirrer and leve monitor thereof, and the mud filling mechanism contains bleed off pipe and overflow and returns jar at interior overflow gigback; It is characterized in that this device also has additional the angle displacement measurement device that can monitor winch rotating cylinder angular displacement and cooperates hydraulic tongs or the tongs hydraulic pressure rotation direction measuring appliance of counting instruction to send with it; The slurry tank leve monitor then for having the anti-dried supersonic liquid level monitor of scratching of an isolated tube that is communicated with the drilling fluid bottom, also is provided with a spillway discharge measuring instrument in the overflow gigback; The angle displacement measurement device is connected with the master controller input interface by data/address bus, and is connected with acquired signal with winch drum by the two ends of its power transmission shaft, and the spillway discharge measuring instrument is located on the bleed off pipe; Hydraulic pressure rotation direction measuring appliance then is anchored on the derrick base; The control signal input of digital electric control box and supersonic liquid level monitor in the mud filling mechanism, the spillway discharge measuring instrument, the signal output part of hydraulic tongs or tongs rotation direction measuring appliance also is connected with the output and the input interface of master controller respectively by data/address bus, and hydraulic pressure rotation direction measuring appliance is connected with received signal with tongs or hydraulic tongs by the tail rope chest expander; And the import of the mud of mud filling mechanism outlet and bleed off pipe in use still with former well head on the anti-overflow pipe connect.

2, by the described drilling well of claim 1 automatically pouring mud device; It is characterized in that described mud filling mechanism comprises slush pump, motor and digital electric control box thereof.

3, by the described drilling well of claim 1 automatically pouring mud device; It is characterized in that described angle displacement measurement device is the angular displacement count measurement device that comprises photoelectric encoder and gear drive.

4, by the described drilling well of claim 1 automatically pouring mud device; It is characterized in that described hydraulic tongs and tongs hydraulic pressure rotation direction measuring appliance are the hydraulic pressure rotation direction measuring appliance that comprises pressure sensor, photoelectric encoder and tail rope chest expander.

5, by the described drilling well of claim 1 automatically pouring mud device; It is characterized in that described spillway discharge measuring instrument then returns the volume digital measuring instrument for containing automatically reset wig-wag and photoelectric encoder of turnover plate type in interior overflow.