CN109854193A - Seabed drilling machine mud circulating system and method - Google Patents
Seabed drilling machine mud circulating system and method Download PDFInfo
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- CN109854193A CN109854193A CN201910162084.1A CN201910162084A CN109854193A CN 109854193 A CN109854193 A CN 109854193A CN 201910162084 A CN201910162084 A CN 201910162084A CN 109854193 A CN109854193 A CN 109854193A
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Abstract
The invention discloses a kind of seabed drilling machine mud circulating system and methods, it is related to deepwater drilling equipment technical field, system includes: support vessel, umbilical cables, coiled tubing tension section, coiled tubing mud input channel, seabed mud conditioning device, wellhead slurry recovery channel, coiled tubing, wellhead assembly, seabed rig substructure, injection head and derrick；One end of umbilical cables couples with support vessel, and the other end couples with seabed mud conditioning device, for providing the channel injected mud to seabed and return to mud to support vessel；Mud conditioning device in seabed will be exported by umbilical cables to support vessel again for exporting the mud injected from umbilical cables to coiled tubing mud input channel after the filtering slurry returned from wellhead slurry recovery channel processing.The present invention has the advantages that long transmission distance, long service life.
Description
Technical field
The present invention relates to deepwater drilling equipment technical fields, and in particular to a kind of seabed drilling machine mud circulating system and side
Method.
Background technique
Currently, with the reduction of landing field and shallow sea oil and gas reserves and its increase of exploitation difficulty, deepwater regions are increasingly becoming
The hot spot of world's oil-gas exploration.And conventional land or ocean platform drilling machine, due to being restricted by factors such as the depth of water, stratum, it is difficult to
Meet the needs of deepwater drilling.And conventional land or ocean platform drilling machine, mud system and well head is closely located, conveys energy
Amount loss is small, and seabed drilling machine well mouth is located at seabed, meets hundreds of meters with the mud system on support vessel, long transmission distance, energy
Amount loss is big, so being also difficult to meet the needs of deepwater drilling.
Therefore, in order to overcome drawbacks described above, presently, there are some drilling technologies that can be applied to deep-sea.For example, patent
A kind of submarine mud suction system for realizing mud veclamation, one end of mud suction apparatus shell are disclosed in CN205370481U
It is fixed on well in word, drilling rod passes through shell and extends in wellbore, and left and right exit passageway passes through pipeline 1,2 and lifting pump respectively
1,2 are connected, and mud veclamation to sea drill ship is recycled.For another example disclosing one kind in patent CN102080510A
Realize submarine mud suction system and method without marine riser mud reclamation well drilling, the outer housing lower part of seabed mud suction apparatus
Extend outwardly on side wall and be provided with side exit, side exit connects seabed mud lifting pump by ocean floor drilling liquid feed-line
Entrance, seabed mud lifting pump outlet by drilling fluid return line connection ocean floor drilling ship on Deal With Drilling Fluid set
It is standby, it realizes and is recycled.But current seabed mud circulating system fails to carry out in advance to the mud of return in seabed
The processing such as filter, shunting cause the impurity from the mud that wellhead assembly returns to be easy blocking pipeline, easily cause the system failure,
System service life is short.
Summary of the invention
Therefore, technical problems to be solved of the embodiment of the present invention are that seabed mud circulating system in the prior art uses
Service life is short.
For this purpose, a kind of seabed drilling machine mud circulating system of the embodiment of the present invention, comprising: support vessel, umbilical cables, continuous oil
Pipe tension section, coiled tubing mud input channel, seabed mud conditioning device, wellhead slurry recovery channel, coiled tubing, well head
Device, seabed rig substructure, injection head and derrick；
The support vessel is located on sea；
One end of the umbilical cables couples with support vessel, and the other end couples with the seabed mud conditioning device, for mentioning
It feeds to seabed injection mud and returns to the channel of mud to support vessel；
One end of the coiled tubing tension section is connect with injection head, and the other end is connect with roller of continuous oil pipe section, is used for
The mud that transmission seabed mud conditioning device is injected to underground；
One end of the coiled tubing mud input channel is connect with coiled tubing, the other end and seabed mud conditioning device
Connection, is used for transmission the mud that mud conditioning device in seabed is injected to coiled tubing；
The seabed mud conditioning device is for exporting the mud injected from umbilical cables to coiled tubing mud input pipe
Road, and will be exported again by umbilical cables to support vessel after the filtering slurry returned from wellhead slurry recovery channel processing；
One end of the wellhead slurry recovery channel is connect with wellhead assembly, and the other end and seabed mud conditioning device connect
It connects, is used for transmission the mud that wellhead assembly is returned to seabed mud conditioning device；
The seabed rig substructure is positioned at seabed, and the derrick is fixed on the rig substructure of seabed, described continuous
Oil pipe is fixed on the rig substructure of seabed, and the wellhead assembly is fixed on the rig substructure of seabed, the injection head installation position
In can move up and down on derrick and on derrick.
Preferably, three cavitys are included at least inside the umbilical cables, one is transmission of electricity chamber for placing power transmission line, one
A is for the injection chamber to seabed injection mud, and one is for the return cavity to support vessel return mud.
Preferably, the seabed mud conditioning device includes: landwaste collecting box, lifting pump one, lifting pump two, the automatic change of current
Device and filtering ponds；
The channel to seabed injection mud in the import connection umbilical cables of the auto convertor, the continuous oil of outlet connection
Pipe mud input channel；
The import of the filtering ponds is connect with the outlet of wellhead slurry recovery channel, filtering outlet respectively with lifting pump one and
The import of lifting pump two connects, and solid discharge is connect with the import of landwaste collecting box, for returning to from wellhead slurry recovery channel
The mud returned is filtered processing；
The landwaste collecting box is used to collect the landwaste of stored filter pond filtering；
The outlet of the lifting pump one and lifting pump two is separately connected the channel that mud is returned to support vessel in umbilical cables,
For the slurry transportation after filtering ponds filtration treatment to be returned to support vessel.
Preferably, the support vessel include slurry dispenser, vibrating screen, mud cleaner, deaerator, mid-speed centrifuge,
Supercentrifuge, landwaste screw conveyor, slurry tank and slush pump；
Mud of the slurry tank for the good mud of storage configuration and after treatment；
The import of the slush pump is connect with slurry tank, and outlet is connect with one end of umbilical cables, for will be in slurry tank
Mud injects seabed by umbilical cables；
The landwaste screw conveyor is to remove sticky particle and hard clay in umbilical cables return mud, landwaste
Screw conveyor, slurry dispenser, vibrating screen and mud cleaner are sequentially connected with；
The slurry dispenser is used for that treated that mud branches to vibrating screen by landwaste screw conveyor；
Bulky grain formation fines of the used by oscillating screen in removing mud；
The mud cleaner is used to remove the sand shaped and pureed formation fines after vibrating screen is handled in mud；
The import of the deaerator and the gas vent of mud cleaner connect, for removing after mud cleaner is handled
Pernicious gas and fuel gas in mud；
The import of the mid-speed centrifuge and the drilling fluid outlet of mud cleaner connect, for recycling in weighted drilling fluid
Solid phase；
The supercentrifuge is connect with mid-speed centrifuge, treated for handling mid-speed centrifuge drilling fluid.
Preferably, the slush pump includes slush pump one, slush pump two, slush pump three, is only had simultaneously in three slush pumps
Two work, when a failure in the slush pump of work, the slush pump not worked substitutes failure slush pump automatically and continues work
Make.
Preferably, the quantity of the slurry tank is four or more；The quantity of the deaerator is two or more；The vibration
The quantity of sieve is three or more；The quantity of the mud cleaner is two or more.
A kind of seabed drilling machine mud round-robin method of the embodiment of the present invention, comprising the following steps:
Mud is injected into coiled tubing from support vessel；
Mud is back to seabed mud conditioning device by wellhead slurry recovery channel from wellhead assembly；
Mud conditioning device in seabed carries out the first filtration treatment to mud；
Seabed mud conditioning device treated mud is back to support vessel by umbilical cables；
Support vessel carries out the second filtration treatment to mud and stores.
Preferably, described the step of mud is injected into coiled tubing from support vessel, includes:
Mud in slurry tank is pumped into umbilical cord by two slush pumps in control slush pump one, slush pump two and slush pump three
The injection chamber of cable, the auto convertor being transmitted in seabed mud conditioning device；
When coiled tubing work, control auto convertor and coiled tubing mud input channel are connected, and mud is passed through
Coiled tubing mud input channel is transmitted to coiled tubing from auto convertor.
Preferably, the seabed mud conditioning device includes: to the step of mud the first filtration treatment of progress
The mud that wellhead slurry recovery channel returns is passed through filtering ponds；
Control filtering ponds are filtered processing to filter out large granule landwaste；
The collection of large granule landwaste is stored in landwaste collecting box.
Preferably, the support vessel carries out the second filtration treatment to mud and includes: the step of storage
The mud for returning to support vessel is passed through landwaste screw conveyor, to remove sticky particle in mud and hard
Clay；
Control slurry dispenser is by treated mud branches to vibrating screen one, vibrating screen two and the vibration of landwaste screw conveyor
Dynamic sieve three, control vibrating screen one, vibrating screen two and vibrating screen three are to remove the bulky grain formation fines in mud；
By vibrating screen treated slurry transportation to mud cleaner one and mud cleaner two, mud cleaner one is controlled
With mud cleaner two to remove after vibrating screen processing 74-105 μm in mud of sand shaped and pureed formation fines；
What is generated after mud cleaner is handled includes that pernicious gas and fuel gas are passed through deaerator one and deaerator two,
Carry out harmless treatment；
The drilling fluid generated after mud cleaner is handled sequentially inputs mid-speed centrifuge and supercentrifuge, controls middling speed
Centrifuge recycles the solid phase in weighted drilling fluid, control supercentrifuge treated handling mid-speed centrifuge drilling fluid,
It is passed through in slurry tank one, slurry tank two, slurry tank three and slurry tank four and stores later.
The technical solution of the embodiment of the present invention, has the advantages that
1. drilling machine mud circulating system in seabed provided in an embodiment of the present invention is filled by the way that seabed mud conditioning is arranged in seabed
It sets, the mud returned from wellhead slurry recovery channel is filtered processing in advance, guarantees the fluency of mud return flow line, is passed
It is defeated more reliable, it may filter that the impurity in mud and avoid because impurity blocks damage caused by pipeline, extend making for system
Use the service life.It can be applied to the seabed drilling machine mud circulating system of petroleum or exploitation of gas hydrates, it is flat compared to land and ocean
Bench drill machine mud long transmission distance.By support vessel storage, processing mud, seabed drilling machine overall weight is not only greatly reduced,
But also more drilling fluids can be provided for seabed drilling machine, realize the wellbore target of bigger depth.
2. drilling machine mud round-robin method in seabed provided in an embodiment of the present invention, by seabed mud conditioning device to return
Mud carries out primary filtration processing, prevents large granule landwaste from entering return duct, and line clogging failure is avoided to occur, and transmission is more
Reliably, the service life of the circulatory system is extended.By support vessel storage, processing mud, land and ocean platform drilling machine are compared
Mud long transmission distance can provide more drilling fluids for seabed drilling machine, realize the wellbore target of bigger depth.
Detailed description of the invention
In order to illustrate more clearly of the technical solution in the specific embodiment of the invention, specific embodiment will be retouched below
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is some realities of the invention
Mode is applied, it for those of ordinary skill in the art, without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the overall schematic of a specific example of seabed drilling machine mud circulating system in the embodiment of the present invention 1；
Fig. 2 is the schematic diagram of a specific example of seabed mud conditioning device in the embodiment of the present invention 1；
Fig. 3 is the schematic diagram of a specific example of support vessel below deck equipment in the embodiment of the present invention 1；
Fig. 4 is the schematic diagram of a specific example of filtering ponds in the embodiment of the present invention 1；
Fig. 5 is the flow chart of a specific example of seabed drilling machine mud round-robin method in the embodiment of the present invention 2.
Appended drawing reference: 1, support vessel；1-1, slush pump one；1-2, slush pump two；1-3, slush pump three；1-4, slurry tank
One；1-5, slurry tank two；1-6, slurry tank three；1-7, slurry tank four；1-8, deaerator one；1-9, deaerator two；1-10, middling speed
Centrifuge；1-11, supercentrifuge；1-12, landwaste screw conveyor；1-13, vibrating screen one；1-14, vibrating screen two；1-15,
Vibrating screen three；1-16, slurry dispenser；1-17, mud cleaner one；1-18, mud cleaner two；2, umbilical cables；3, continuous
Oil pipe tension section；4, coiled tubing mud input channel；5, seabed mud conditioning device；5-1, landwaste collecting box；5-2, lifting
Pump one；5-3, lifting pump two；5-4, auto convertor；5-5, filtering ponds；5-5-1, primary filter pond；The filtering of 5-5-2, S bend
Pond；5-5-3, the first import；5-5-4, first outlet；5-5-5, solid discharge；5-5-6, the first filter layer；5-5-7, second into
Mouthful；5-5-8, second outlet；5-5-9, the second filter layer；6, wellhead slurry recovery channel；7, coiled tubing；8, wellhead assembly；
9, seabed rig substructure；10, derrick；11, injection head.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the term as used herein is only used for the mesh of description specific embodiment
, and it is not intended to limit the present invention.Unless clearly indicated by the context, otherwise singular " one " as used herein,
The intentions such as "one" and "the" also include plural form.When using terms such as " include " and or " include ", it is intended to illustrate exist
This feature, integer, step, operation, element and/or component, and it is not excluded for one or more other features, integer, step, behaviour
Work, element, component, and/or other presence or increase for combining.Term "and/or" includes that one or more correlations list project
Any and all combinations.The orientation or positional relationship of the instructions such as term " on ", "lower", "vertical", "horizontal", "inner", "outside"
To be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description of the present invention and simplification of the description, rather than indicate or
It implies that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as
Limitation of the present invention.Term " first ", " second " etc. are used for description purposes only, and are not understood to indicate or imply relatively heavy
The property wanted.Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachable
Connection, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, centre can also be passed through
Medium is indirectly connected, and can also be the connection inside two elements；It can be wireless connection, be also possible to wired connection.For
For those skilled in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Embodiment 1
The present embodiment provides a kind of seabed drilling machine mud circulating systems, are particularly suitable for petroleum or exploitation of gas hydrates
Deepwater drilling.As shown in Figure 1, the seabed drilling machine mud circulating system includes: support vessel 1, umbilical cables 2, coiled tubing tension
Section 3, coiled tubing mud input channel 4, seabed mud conditioning device 5, wellhead slurry recovery channel 6, coiled tubing 7, well head
Device 8, seabed rig substructure 9, injection head 11 and derrick 10.
Support vessel 1 is located on sea.One end of umbilical cables 2 couples with support vessel 1, the other end and seabed mud conditioning device
5 connections, for providing the channel injected mud to seabed and return to mud to support vessel 1.Preferably, it is at least wrapped inside umbilical cables
Containing three cavitys, one is transmission of electricity chamber for placing power transmission line, and one is one for the injection chamber to seabed injection mud
It is the return cavity for returning to mud to support vessel 1.One end of coiled tubing tension section 3 is connect with injection head 11, the other end with
The connection of roller of continuous oil pipe section, is used for transmission the mud that seabed mud conditioning device 5 is injected to underground.The input of coiled tubing mud
One end of pipeline 4 is connect with coiled tubing 7, and the other end is connect with seabed mud conditioning device 5, is used for transmission seabed mud conditioning
The mud that device 5 is injected to coiled tubing 7.Seabed mud conditioning device 5 is used to export the mud injected from umbilical cables 2 to even
Continuous oil pipe mud input channel 4, and umbilical cables 2 will be passed through again after the filtering slurry processing that wellhead slurry recovery channel 6 returns
It exports to support vessel 1.One end of wellhead slurry recovery channel 6 is connect with wellhead assembly 8, the other end and seabed mud conditioning device
5 connections, are used for transmission the mud that wellhead assembly 8 is returned to seabed mud conditioning device 5.Seabed rig substructure 9 is positioned at sea
Bottom, derrick 10 are fixed on seabed rig substructure 9, and coiled tubing 7 is fixed on seabed rig substructure 9, and wellhead assembly 8 is fixed
On seabed rig substructure 9, injection head 11 is positioned on derrick 10 and can move up and down on derrick 10.
Above-mentioned seabed drilling machine mud circulating system will be from wellhead slurry by the way that seabed mud conditioning device is arranged in seabed
The mud that recovery channel returns is filtered processing in advance, guarantees the fluency of mud return flow line, and transmission is more reliable, may filter that
Fall the impurity in mud and avoid because impurity block pipeline caused by damage, extend the service life of system.It can be applied to
The seabed drilling machine mud circulating system of petroleum or exploitation of gas hydrates compares land and ocean platform drilling machine mud transmission distance
From remote.By support vessel storage, processing mud, seabed drilling machine overall weight is not only greatly reduced, but also can be seabed
Drilling machine provides more drilling fluids, realizes the wellbore target of bigger depth.
Preferably, as shown in Fig. 2, seabed mud conditioning device 5 includes: landwaste collecting box 5-1, one 5-2 of lifting pump, lifting
Pump two 5-3, auto convertor 5-4 and filtering ponds 5-5.Being injected to seabed in the import connection umbilical cables 2 of auto convertor 5-4
The channel of mud, outlet connection coiled tubing mud input channel 4.The import of filtering ponds 5-5 and wellhead slurry recovery channel 6
Outlet connection, filtering outlet are connect with the import of two 5-3 of one 5-2 of lifting pump and lifting pump respectively, and solid discharge and landwaste are collected
The import of case 5-1 connects, and for being filtered processing to the mud returned from wellhead slurry recovery channel 6, filters out super large
Grain landwaste, blocks pipeline when mud being avoided to return.Landwaste collecting box 5-1 is used to collect the landwaste of stored filter pond 5-5 filtering.It lifts
The outlet for rising pump one 5-2 and two 5-3 of lifting pump is separately connected (returning in umbilical cables 2 to the channel of the return mud of support vessel 1
Chamber), for the slurry transportation after filtering ponds 5-5 filtration treatment to be returned to support vessel 1.
Preferably, as shown in figure 3, support vessel 1 include slurry dispenser 1-16, one 1-13 of vibrating screen, two 1-14 of vibrating screen,
Three 1-15 of vibrating screen, one 1-17 of mud cleaner, two 1-18 of mud cleaner, one 1-8 of deaerator, two 1-9 of deaerator, middling speed from
Scheming 1-10, supercentrifuge 1-11, landwaste screw conveyor 1-12, one 1-4 of slurry tank, two 1-5 of slurry tank, three 1- of slurry tank
6, four 1-7 of slurry tank, one 1-1 of slush pump, two 1-2 of slush pump, three 1-3 of slush pump.One 1-4 of slurry tank, two 1-5 of slurry tank, mud
Starch the mud of three 1-6 of tank, four 1-7 of slurry tank for the good mud of storage configuration and after treatment.One 1-1 of slush pump, mud
It pumps two 1-2, three 1-3 of slush pump and the mud in slurry tank is injected into chamber injection seabed by umbilical cables.Preferably, in order to ensure mud
The reliability of the circulatory system is starched, slush pump is using dual-purpose one for operating mode, i.e. one 1-1 of slush pump, two 1-2 of slush pump, mud
It pumps in three 1-3 while only two works, when a wherein failure, another slush pump substitutes failure slush pump automatically to be continued
Work.The way of output of slurry tank can be but be not limited to using the sequentially way of output, first one 1-4 of slurry tank output, slurry tank
Rear two 1-5 of slurry tank output is finished in one 1-4, and rear three 1-6 of slurry tank output is finished in two 1-5 of slurry tank, after three 1-6 of slurry tank is finished
Four 1-7 of slurry tank output.Landwaste screw conveyor 1-12 to remove umbilical cables return cavity return mud in sticky particle and
Hard clay is not to block other cleaning equipments so as to return to mud.Slurry dispenser 1-16 is by landwaste screw conveyor
Treated, and mud branches to three vibrating screens.One 1-13 of vibrating screen, two 1-14 of vibrating screen, three 1-15 of vibrating screen are to remove mud
Bulky grain formation fines in slurry.One 1-17 of mud cleaner, two 1-18 of mud cleaner are to remove mud after vibrating screen is handled
Sand shaped and pureed formation fines in slurry.One 1-8 of deaerator, two 1-9 of deaerator are to remove after mud cleaner is handled
Pernicious gas and fuel gas in mud.Mid-speed centrifuge 1-10 recycles the solid phase in weighted drilling fluid.Supercentrifuge
1-11 treated for handling mid-speed centrifuge drilling fluid.
Preferably, as shown in figure 4, filtering ponds 5-5 includes: primary filter pond 5-5-1 and S bend filtering ponds.Filtering ponds 5-5
It can be integrally placed in seal casinghousing.The outlet of wellhead slurry recovery channel 6 and the first import 5-5-3 of primary filter pond 5-5-1
It connects, places the first filter layer 5-5-6 in the 5-5-1 of primary filter pond and be deposited in for filtering out large granule landwaste in mud
The tilting bottom of primary filter pond 5-5-1 is exported from solid discharge 5-5-5 to landwaste collecting box 5-1, primary filter pond 5-5-1
First outlet 5-5-4 connect with the second import 5-5-7 of S bend filtering ponds 5-5-2 by pipeline, S bend filtering ponds 5-5-2
In with bend place the second filter layer 5-5-9, for filtering out the biomass in mud, according to biomass activity characteristic according to imitative
Raw principle of learning designs S bend filtering ponds, can effectively filter out the biomass in mud, greatly improve filter efficiency.S bend
The second outlet 5-5-8 of filtering ponds 5-5-2 is connect with the import of two 5-3 of one 5-2 of lifting pump and lifting pump respectively, passes through umbilical cables
It is delivered to support vessel.
The mud circulation of seabed drilling machine mud circulating system mainly includes that mud from support vessel injects seabed drilling machine and from sea
Subdrilling machine returns to two processes of support vessel.
It is one 1-1 of slush pump in 1 cabin of support vessel, two 1-2 of slush pump, two in three 1-3 of slush pump that mud, which injects process,
Mud in one 1-4 of slurry tank, two 1-5 of slurry tank, three 1-6 of slurry tank, four 1-7 of slurry tank is pumped into umbilical cables 2 by platform slush pump
Injection chamber, the auto convertor 5-4 being transmitted in seabed mud conditioning device 5.When coiled tubing 7 works, coiled tubing
Mud input channel 4 is connected, and mud is transmitted to coiled tubing from auto convertor 5-4 by coiled tubing mud input channel 4
7。
Mud Returning process is that the mud that wellhead assembly 8 returns is transmitted to seabed mud by wellhead slurry recovery channel 6
Processing unit 5, the mud into seabed mud conditioning device 5 pass through filtering ponds 5-5 progress preliminary treatment first, filter out super large
Particle landwaste is simultaneously stored in landwaste collecting box 5-1, and pipeline is blocked when mud being avoided to return.After drilling process, support vessel 1
Recycling landwaste collecting box 5-1 simultaneously takes back land processing.Mud after filtering ponds 5-5 preliminary treatment is in one 5-2 of lifting pump, lifting
Under the action of pumping two 5-3, support vessel 1 is transmitted back to by the return cavity of umbilical cables 2.The mud for returning to support vessel 1 first passes around rock
Screw conveyor 1-12 is considered to be worth doing to remove sticky particle and hard clay in mud, is not to block it so as to return to mud
Its cleaning equipment.Slurry dispenser 1-16 by landwaste screw conveyor 1-12 treated mud branches to one 1-13 of vibrating screen,
Two 1-14 of vibrating screen, three 1-15 of vibrating screen, to remove the bulky grain formation fines in mud.One 1-17 of mud cleaner, mud
Slurry two 1-18 of cleaner is to remove after vibrating screen processing 74-105 μm in mud of sand shaped and pureed formation fines.Deaerator
One 1-8, two 1-9 of deaerator are to remove pernicious gas and fuel gas after mud cleaner is handled in mud.After processing
Mud sequentially input mid-speed centrifuge 1-10 and supercentrifuge 1-11, mid-speed centrifuge 1-10 is recycled in weighted drilling fluid
Solid phase, supercentrifuge 1-11 treated for handling mid-speed centrifuge drilling fluid.It is handled by supercentrifuge 1-11
Flow into afterwards one 1-4 of slurry tank, two 1-5 of slurry tank, three 1-6 of slurry tank, in four 1-7 of slurry tank, to realize the circulation benefit of mud
With.
Embodiment 2
The present embodiment provides a kind of seabed drilling machine mud round-robin methods, as shown in Figure 5, comprising the following steps:
S1, mud is injected into coiled tubing 7 from support vessel 1；
S2, mud is back to seabed mud conditioning device 5 by wellhead slurry recovery channel 6 from wellhead assembly 8；
S3, seabed mud conditioning device 5 carry out the first filtration treatment to mud；
S4, treated the mud of seabed mud conditioning device 5 is back to support vessel 1 by umbilical cables 2；
S5, support vessel 1 carry out the second filtration treatment to mud and store.
Preferably, S1's includes: the step of mud is injected into coiled tubing 7 from support vessel 1
S11, two slush pumps controlled in one 1-1 of slush pump, three 1-3 of two 1-2 of slush pump and slush pump will be in slurry tanks
Mud be pumped into the injection chambers of umbilical cables 2, the auto convertor 5-4 being transmitted in seabed mud conditioning device 5；
S12, when coiled tubing 7 work when, control auto convertor 5-4 and coiled tubing mud input channel 4 connect, will
Mud is transmitted to coiled tubing 7 from auto convertor 5-4 by coiled tubing mud input channel 4.
Preferably, the seabed mud conditioning device 5 of S3 includes: to the step of mud the first filtration treatment of progress
S31, the mud that wellhead slurry recovery channel 6 returns is passed through filtering ponds 5-5；
S32, control filtering ponds 5-5 are filtered processing to filter out large granule landwaste；
S33, the collection of large granule landwaste is stored in landwaste collecting box 5-1.
Preferably, the support vessel 1 of S5 carries out the second filtration treatment to mud and includes: the step of storage
S51, the mud for returning to support vessel 1 is passed through landwaste screw conveyor 1-12, to remove the viscosity in mud
Grain and hard clay；
Treated that mud branches to vibrating screen one by landwaste screw conveyor 1-12 by S52, control slurry dispenser 1-16
Three 1-15 of 1-13, two 1-14 of vibrating screen and vibrating screen, control one 1-13 of vibrating screen, two 1-14 of vibrating screen and three 1-15 of vibrating screen are used
To remove the bulky grain formation fines in mud；
S53, by vibrating screen treated slurry transportation to two 1-18 of one 1-17 of mud cleaner and mud cleaner, control
One 1-17 of mud cleaner and two 1-18 of mud cleaner is to remove after vibrating screen processing in mud 74-105 μm sand shaped
With pureed formation fines；
S54, generate after handling mud cleaner includes that pernicious gas and fuel gas are passed through one 1-8 of deaerator and remove
Two 1-9 of gas device carries out harmless treatment；
S55, the drilling fluid generated after handling mud cleaner sequentially input mid-speed centrifuge 1-10 and supercentrifuge
1-11, control mid-speed centrifuge 1-10 recycle the solid phase in weighted drilling fluid, control supercentrifuge 1-11 to handle middling speed
Centrifuge 1-10 treated drilling fluid, is passed through one 1-4 of slurry tank, two 1-5 of slurry tank, three 1-6 of slurry tank and slurry tank later
It is stored in four 1-7.
Above-mentioned seabed drilling machine mud round-robin method carries out primary filtration by mud of the mud conditioning device in seabed to return
Processing, prevents large granule landwaste from entering return duct, and line clogging failure is avoided to occur, and transmission is more reliable, extends circulation
The service life of system.By support vessel storage, processing mud, land and ocean platform drilling machine mud long transmission distance are compared,
More drilling fluids can be provided for seabed drilling machine, realize the wellbore target of bigger depth.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of seabed drilling machine mud circulating system characterized by comprising support vessel (1), umbilical cables (2), coiled tubing are drawn
It is tight section (3), coiled tubing mud input channel (4), seabed mud conditioning device (5), wellhead slurry recovery channel (6), continuous
Oil pipe (7), wellhead assembly (8), seabed rig substructure (9), injection head (11) and derrick (10)；
The support vessel (1) is located on sea；
One end of the umbilical cables (2) couples with support vessel (1), and the other end couples with the seabed mud conditioning device (5), uses
Mud is injected to seabed in offer and the channel of mud is returned to support vessel (1)；
One end of the coiled tubing tension section (3) is connect with injection head (11), and the other end is connect with roller of continuous oil pipe section, is used
In the mud that transmission seabed mud conditioning device (5) is injected to underground；
One end of the coiled tubing mud input channel (4) is connect with coiled tubing (7), and the other end and seabed mud conditioning fill
(5) connection is set, the mud that seabed mud conditioning device (5) is injected to coiled tubing (7) is used for transmission；
The seabed mud conditioning device (5) is used to export the mud injected from umbilical cables (2) to coiled tubing mud and input
Pipeline (4), and exported again by umbilical cables (2) to auxiliary after the filtering slurry processing that will be returned from wellhead slurry recovery channel (6)
Help ship (1)；
One end of the wellhead slurry recovery channel (6) is connect with wellhead assembly (8), the other end and seabed mud conditioning device
(5) it connects, is used for transmission the mud that wellhead assembly (8) is returned to seabed mud conditioning device (5)；
The seabed rig substructure (9) is positioned at seabed, and the derrick (10) is fixed on seabed rig substructure (9), institute
Coiled tubing (7) is stated to be fixed on seabed rig substructure (9), the wellhead assembly (8) be fixed on seabed rig substructure (9) it
On, the injection head (11) is positioned on derrick (10) and can move up and down on derrick (10).
2. drilling machine mud circulating system in seabed according to claim 1, which is characterized in that at least wrapped inside the umbilical cables
Containing three cavitys, one is transmission of electricity chamber for placing power transmission line, and one is one for the injection chamber to seabed injection mud
It is the return cavity for returning to mud to support vessel (1).
3. drilling machine mud circulating system in seabed according to claim 1 or 2, which is characterized in that the seabed mud conditioning
Device (5) includes: landwaste collecting box (5-1), lifting pump one (5-2), lifting pump two (5-3), auto convertor (5-4) and filtering
Pond (5-5)；
The channel to seabed injection mud in import connection umbilical cables (2) of the auto convertor (5-4), outlet connection connect
Continuous oil pipe mud input channel (4)；
The import of the filtering ponds (5-5) is connect with the outlet of wellhead slurry recovery channel (6), filtering outlet respectively with lifting pump
One (5-2) is connected with the import of lifting pump two (5-3), and solid discharge is connect with the import of landwaste collecting box (5-1), for from
The mud that wellhead slurry recovery channel (6) returns is filtered processing；
The landwaste collecting box (5-1) is used to collect the landwaste of stored filter pond (5-5) filtering；
The outlet of the lifting pump one (5-2) and lifting pump two (5-3) is separately connected returning in umbilical cables (2) to support vessel (1)
The channel for returning mud, for the slurry transportation after filtering ponds (5-5) filtration treatment to be returned to support vessel (1).
4. drilling machine mud circulating system in seabed according to claim 1-3, which is characterized in that the support vessel
It (1) include slurry dispenser (1-16), vibrating screen, mud cleaner, deaerator, mid-speed centrifuge (1-10), supercentrifuge
(1-11), landwaste screw conveyor (1-12), slurry tank and slush pump；
Mud of the slurry tank for the good mud of storage configuration and after treatment；
The import of the slush pump is connect with slurry tank, and outlet is connect with one end of umbilical cables (2), for by the mud in slurry tank
Slurry injects seabed by umbilical cables (2)；
The landwaste screw conveyor (1-12) returns to sticky particle in mud and hard glutinous to remove umbilical cables (2)
Soil, landwaste screw conveyor (1-12), slurry dispenser (1-16), vibrating screen and mud cleaner are sequentially connected with；
The slurry dispenser (1-16) is for by landwaste screw conveyor (1-12), treated, and mud to branch to vibrating screen；
Bulky grain formation fines of the used by oscillating screen in removing mud；
The mud cleaner is used to remove the sand shaped and pureed formation fines after vibrating screen is handled in mud；
The import of the deaerator and the gas vent of mud cleaner connect, for removing the mud after mud cleaner is handled
In pernicious gas and fuel gas；
The import of the mid-speed centrifuge (1-10) and the drilling fluid outlet of mud cleaner connect, for recycling weighted drilling fluid
In solid phase；
The supercentrifuge (1-11) connect with mid-speed centrifuge (1-10), after handling mid-speed centrifuge (1-10) processing
Drilling fluid.
5. drilling machine mud circulating system in seabed according to claim 4, which is characterized in that the slush pump includes slush pump
One (1-1), slush pump two (1-2), slush pump three (1-3), only two work simultaneously in three slush pumps, when the mud of work
When a failure in pump, the slush pump not worked substitutes failure slush pump automatically and works on.
6. drilling machine mud circulating system in seabed according to claim 4 or 5, which is characterized in that the quantity of the slurry tank
It is four or more；The quantity of the deaerator is two or more；The quantity of the vibrating screen is three or more；The mud cleaning
The quantity of device is two or more.
7. a kind of seabed drilling machine mud round-robin method, which comprises the following steps:
Mud is injected into coiled tubing (7) from support vessel (1)；
Mud is back to seabed mud conditioning device (5) by wellhead slurry recovery channel (6) from wellhead assembly (8)；
Seabed mud conditioning device (5) carries out the first filtration treatment to mud；
Seabed mud conditioning device (5) treated mud is back to support vessel (1) by umbilical cables (2)；
Support vessel (1) carries out the second filtration treatment to mud and stores.
8. drilling machine mud round-robin method in seabed according to claim 7, which is characterized in that it is described by mud from support vessel
(1) the step of being injected into coiled tubing (7) include:
Two slush pumps in control slush pump one (1-1), slush pump two (1-2) and slush pump three (1-3) will be in slurry tank
Mud is pumped into the injection chamber of umbilical cables (2), the auto convertor (5-4) being transmitted in seabed mud conditioning device (5)；
When coiled tubing (7) work, control auto convertor (5-4) and coiled tubing mud input channel (4) are connected, by mud
Slurry is transmitted to coiled tubing (7) from auto convertor (5-4) by coiled tubing mud input channel (4).
9. drilling machine mud round-robin method in seabed according to claim 7 or 8, which is characterized in that the seabed mud conditioning
Device (5) to mud carry out the first filtration treatment the step of include:
The mud that wellhead slurry recovery channel (6) return is passed through filtering ponds (5-5)；
Control filtering ponds (5-5) is filtered processing to filter out large granule landwaste；
The collection of large granule landwaste is stored in landwaste collecting box (5-1).
10. according to the described in any item seabed drilling machine mud round-robin methods of claim 7-9, which is characterized in that the support vessel
(1) the second filtration treatment is carried out to mud and includes: the step of storage
By return support vessel (1) mud be passed through landwaste screw conveyor (1-12), to remove the sticky particle in mud and
Hard clay；
Controlling slurry dispenser (1-16), treated that mud branches to one (1- of vibrating screen by landwaste screw conveyor (1-12)
13), vibrating screen two (1-14) and vibrating screen three (1-15), control vibrating screen one (1-13), vibrating screen two (1-14) and vibrating screen
Three (1-15) are to remove the bulky grain formation fines in mud；
By vibrating screen treated slurry transportation to mud cleaner one (1-17) and mud cleaner two (1-18), mud is controlled
Cleaner one (1-17) and mud cleaner two (1-18) are to remove after vibrating screen processing in mud 74-105 μm sand shaped
With pureed formation fines；
What is generated after mud cleaner is handled includes that pernicious gas and fuel gas are passed through deaerator one (1-8) and deaerator two
(1-9) carries out harmless treatment；
The drilling fluid generated after mud cleaner is handled sequentially inputs mid-speed centrifuge (1-10) and supercentrifuge (1-11),
Control mid-speed centrifuge (1-10) recycling weighted drilling fluid in solid phase, control supercentrifuge (1-11) to handle middling speed from
Scheming (1-10) treated drilling fluid, be passed through later slurry tank one (1-4), slurry tank two (1-5), slurry tank three (1-6) and
Storage in slurry tank four (1-7).
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| CN201910162084.1A CN109854193B (en) | 2019-02-23 | 2019-02-23 | Mud circulation system and method for submarine drilling machine |
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| CN109854193B (en) | 2023-07-14 |
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