A kind of control method of the well site survey system for marine dynamically-positioned drilling platform
Technical field
The present invention relates to offshore petroleum drilling technical field, bore for marine dynamic positioning more particularly, it relates to a kind of
The control method of the well site survey system of platform shaft.
Background technology
Along with the development of China's economic, petroleum-based energy demand is continuously increased.Single land exploitation oil gas
Resource can not meet needs, and following increasing exploitation will focus on sea.China's Marine oil and gas resource exploitation at present is main
Continental shelf that will be shallower in coastal waters, but the oil and gas reserves at deep-sea accounts for 1/3rd of Chinese Petroliferous total resources, along with stone
The progress of exploration activity production technique, marches deep-sea and has become inevitable.
Marine dynamically-positioned drilling platform is as the carrier of deep water hydrocarbon resource exploitation, relative to the semi-submersible type drilling well in shallow sea
Platform has DP dynamic positioning system, provides good operating condition for deep water hydrocarbon resource drilling.General drilling platforms exists
Need before spudding in that design well head is carried out well site to investigate in advance.
Traditional deep water well site investigation method is with special investigation vessel traction tube workpiece, carries multibeam echosounder, side
Sweep sonar, region, well site is investigated by the shallow equipment such as system, magnetometer that cuts open.Owing to investigation vessel and tube workpiece are relatively costly,
In addition be limited to the impact of sea situation and operating water depth in region, deep-sea, working performance is low, and the expense causing deep water well site survey is non-
Chang Gao.Owing to the depth of water is very big, fact-finding process is difficult by double ship positionnings, data transmission distance length, at the middle and upper levels flow instability etc. because of
Element impact, the error in data obtained is bigger.For reducing drillng operation risk, generally require drill ship away from the pre-location of well, this
Reduce exploration success ratio to a certain extent.
Accordingly, it would be desirable to better control over well site survey system to carry out the investigation work of well site, seabed.
Summary of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, it is provided that a kind of dynamic for sea
The control method of the well site survey system of power spitting drill platform shaft.
The technical solution adopted for the present invention to solve the technical problems is: structure one is put down for marine dynamic positioning drilling well
The control method of the well site survey system of platform, comprises the following steps:
After S1: dynamically-positioned drilling platform arrives well location to be measured, the framework of ROV is installed and is used for carrying TSS440 system
Hydraulic folding arm device, meanwhile, described ROV carries well site survey equipment;
S2: described hydraulic folding arm device is adjusted to erected state, operator control described ROV and enter water, and move extremely
Predetermined operation position, seabed;
S3: operator control described hydraulic folding arm device and are adjusted to the state of balancing, and keep the spy of described TSS440 system
Test coil is parallel with the horizontal median axis of described ROV, controls described ROV and carries out investigating operation according to default investigation survey line, obtains
Described TSS440 system and the survey data of described well site survey equipment, and by described survey data real-time Transmission to described flat
Platform.
In control method of the present invention, also include:
S4: after completing to investigate operation, operator control described hydraulic folding arm device by the umbilical cables of described ROV and adjust
For erected state, and described ROV is recycled to described platform;
Described hydraulic folding arm device, described TSS440 system and described well site survey equipment under dismantling from described ROV.
In control method of the present invention, described S4 includes: after completing to investigate operation, by described hydraulic folding arm device
Being adjusted to erected state, described ROV returns to described platform from seabed to by the moon pool door of described platform, hydraulic pressure folding described in period
Arm assembly keeps erected state.
In control method of the present invention, described S1 includes: the afterframe at described ROV installs described hydraulic folding arm
Device, installs described TSS440 system on described hydraulic folding arm device, and hold up by controlling described hydraulic folding arm device or
Balance the search coil of described TSS440.
In control method of the present invention, described S2 includes: after described hydraulic folding arm device is adjusted to erected state,
Described ROV enters water by the moon pool door of described platform, and before described ROV arrives described predetermined operation position, described hydraulic pressure is rolled over
Arm assembly keeps erected state.
In control method of the present invention, described S3 includes: install photographic head, described photographic head on described ROV
The duty of hydraulic folding arm device described in Real-time Collection, and transmitted to described platform by the umbilical cables of described ROV;
Operator are according to hydraulic folding arm device described in the duty feedback adjustment of described hydraulic folding arm device.
In control method of the present invention, described S3 also includes: operator judge described ROV by monitoring device
Whether deviate described default investigation survey line, the most then control described ROV and return to described default investigation survey line.
In control method of the present invention, control described hydraulic folding arm device and be adjusted to erected state or balance state
Including:
Operator send control signal, and described control signal transmits the liquid to described ROV by the umbilical cables of described ROV
Pressure control valve;
Described control signal is transmitted to hydraulic motor by described hydraulic control valve, and described hydraulic motor controls described hydraulic pressure folding
The folding arm of arm assembly is holded up or is balanced.
In control method of the present invention, described default investigation survey line includes a plurality of investigation survey line, and adjacent described
Repetitive rate between survey line is no less than 20%, and described survey line density increases along with the reduction of the distance of distance well head.
In control method of the present invention, described well site survey equipment includes: multibeam echosounder, side scan sonar,
Shallow system of cuing open, the survey data of described well site survey equipment includes: depth information, earth surface reflection strength information, bottom section are believed
Breath.
Implement the control method of the well site survey system for marine dynamically-positioned drilling platform of the present invention, have following
Beneficial effect: achieve in the case of dynamically-positioned drilling platform moon pool insufficient space, dynamically-positioned drilling platform at sea
On better control over ROV and carry water under the researching tools such as TSS440 system, carry out seabed well site survey operation, and investigation efficiency
High, precision height.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the present invention program circuit for the control method of the well site survey system of marine dynamically-positioned drilling platform
Figure;
Fig. 2 is the control principle drawing of the well site survey system in the present invention.
Detailed description of the invention
In order to be more clearly understood from the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing describes in detail
The detailed description of the invention of the present invention.
The invention discloses the control method of a kind of well site survey system for marine dynamically-positioned drilling platform, it is achieved
The well site survey system for marine dynamically-positioned drilling platform that better controls over carries out the investigation work of well site, seabed.
The described well site survey system for marine dynamically-positioned drilling platform includes ROV (Remote Operated
Vehicle, unmanned remotely controlled submersible vehicle), and TSS440 system.Drilling platforms includes bottom founded rig, jack-up rigs
Platform, floating vessel type drilling platforms (drill ship) and semisubmersible drilling platform, be primarily used for drilling the offshore structures of well, upper dress
There are the equipment such as drilling well, power, communication, navigation.ROV is the underwater robot that can be used for underwater observation, check and construct;TSS440
System is to can be used for pipeline and the magnetic survey system of submarine optical fiber cable detection.At ROV afterframe, hydraulic folding arm device, hydraulic pressure are installed
Installing TSS440 system on folding arm device, the search coil of TSS440 system can be bundled in hydraulic folding arm device by installing band
On two armed levers, and with armed lever keeping parallelism state, ROV controls hydraulic folding arm device in real time and holds up or balance TSS440 system
The search coil of system, the video camera of ROV lift-launch simultaneously, multibeam echosounder, side scan sonar, the shallow well site survey equipment such as system that cut open enter
Row well site survey.As in figure 2 it is shown, after ROV operator send control signal, by the umbilical cables transmission signal of ROV to ROV
Hydraulic control valve on, hydraulic control valve is made corresponding action according to signal and is rolled over by hydraulic pressure to hydraulic motor, hydraulic motor
The steering linkage of arm assembly controls the armed lever swing arm of hydraulic folding arm device, thus controls holding up of the search coil of TSS440 system
With balance, when the armed lever of hydraulic folding arm device is erected state, armed lever and seabed keep vertical, the detection line of TSS440 system
Circle is the most correspondingly holded up, and keeps vertical with seabed;When the armed lever of hydraulic folding arm device is for balancing state, armed lever keeps with seabed
Parallel, the search coil of TSS440 system is the most correspondingly balanced, with seabed keeping parallelism carry out operation.Operator are led to simultaneously
Crossing the rearmounted video camera of ROV can be with the state of Real Time Observation hydraulic folding arm device.
The heretofore described well site survey system for marine dynamically-positioned drilling platform, can control ROV, hydraulic pressure
Folding arm device and well site survey operation process, it is achieved in the case of dynamically-positioned drilling platform moon pool insufficient space, ROV carries
Water under the researching tools such as TSS440, and complete well site survey operation.Namely utilize dynamically-positioned drilling platform and its configuration
ROV, it is achieved that deep water well site survey operation.And this well site survey operation make use of the time of drilling platforms jointed rod, and
ROV is in rest and reorganization state the most during this period, so this operation scheme the most additionally increases the drilling platforms activity duration.This is
System achieves the well site survey mode that a kind of efficiency is high, precision is high.
Refering to Fig. 1, the control method of the well site survey system for marine dynamically-positioned drilling platform of the present invention, including
Following steps:
After S1: dynamically-positioned drilling platform arrives well location to be measured, the framework of ROV is installed and is used for carrying TSS440 system
Hydraulic folding arm device, meanwhile, ROV carries well site survey equipment.Well site survey equipment includes: sound is swept in multibeam echosounder, side
, shallow cut open system, by multibeam echosounder, side scan sonar, shallow cut open that system respectively obtains depth information, earth surface reflection intensity is believed
The survey datas such as breath, bottom profile information.
Specifically, S1 includes: dynamically-positioned drilling platform arrives well location to be measured, and after starting dynamic positioning state, then
Starting jointed rod, the afterframe at ROV installs hydraulic folding arm device, installs TSS440 system on hydraulic folding arm device, and
The search coil of TSS440 is holded up or balances by controlling hydraulic folding arm device.Control hydraulic folding arm device and be adjusted to erected state
Or state of balancing includes:
Operator send control signal, and control signal is by the hydraulic control valve of the umbilical cables transmission of ROV to ROV;
Hydraulic control valve is by control signal transmission to hydraulic motor, and hydraulic motor controls the folding arm of hydraulic folding arm device and holds up
Or balance.
S2: hydraulic folding arm device is adjusted to erected state, operator control ROV and enter water, and mobile predetermined to seabed
Job position.
Specifically, S2 includes: after hydraulic folding arm device is adjusted to erected state, and operator control ROV by platform
Moon pool door enters water, and before ROV arrives predetermined operation position, hydraulic folding arm device keeps erected state.
S3: operator control hydraulic folding arm device and are adjusted to the state of balancing, keep the search coil of TSS440 system with
The horizontal median axis of ROV is parallel, controls ROV and carries out investigating operation according to default investigation survey line, obtains TSS440 system and well
The survey data of field investigation apparatus, and by survey data real-time Transmission to platform.
Specifically, S3 includes: installation photographic head on ROV, the duty of photographic head Real-time Collection hydraulic folding arm device,
And transmitted to platform by the umbilical cables of ROV;
Operator are according to the duty feedback adjustment hydraulic folding arm device of hydraulic folding arm device.
In control method of the present invention, S3 also includes: by monitoring device, operator judge whether ROV deviates
Described default investigation survey line, the most then control ROV and return to preset investigation survey line.
In the control method of the present invention, also include:
S4: after completing to investigate operation, operator control described hydraulic folding arm device by the umbilical cables of ROV and are adjusted to perpendicular
The state of rising, and ROV is recycled to described platform;
Described hydraulic folding arm device, TSS440 system and well site survey equipment under dismantling from ROV.
Specifically, S4 includes: complete to investigate after operation, hydraulic folding arm device is adjusted to erected state, ROV from seabed to
Returning to platform by the moon pool door of platform, period hydraulic folding arm device keeps erected state.
In control method of the present invention, preset investigation survey line and include a plurality of investigation survey line, and between adjacent survey line
Repetitive rate no less than 20%, survey line density increases along with the reduction of the distance of distance well head.
It should be understood that above example only have expressed the preferred embodiment of the present invention, it describes more concrete and detailed
Carefully, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention;It should be pointed out that, for the common skill of this area
For art personnel, without departing from the inventive concept of the premise, above-mentioned technical characterstic can be carried out independent assortment, it is also possible to do
Going out some deformation and improvement, these broadly fall into protection scope of the present invention;Therefore, all done with scope of the invention as claimed
Equivalents and modification, all should belong to the covering scope of the claims in the present invention.