CN103352656B - A kind of well system - Google Patents
A kind of well system Download PDFInfo
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- CN103352656B CN103352656B CN201310336669.3A CN201310336669A CN103352656B CN 103352656 B CN103352656 B CN 103352656B CN 201310336669 A CN201310336669 A CN 201310336669A CN 103352656 B CN103352656 B CN 103352656B
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- 238000005553 drilling Methods 0.000 claims abstract description 70
- 210000002445 nipple Anatomy 0.000 claims abstract description 54
- 239000002131 composite material Substances 0.000 claims abstract description 48
- 230000005693 optoelectronics Effects 0.000 claims abstract description 24
- 239000000835 fiber Substances 0.000 claims abstract description 14
- 230000010365 information processing Effects 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000006854 communication Effects 0.000 description 9
- 238000004891 communication Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008054 signal transmission Effects 0.000 description 5
- 230000011664 signaling Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000005291 magnetic effect Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
- E21B17/206—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables with conductors, e.g. electrical, optical
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/068—Deflecting the direction of boreholes drilled by a down-hole drilling motor
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of continuous-tube intelligent electric well system, comprise ground control system, continuous-tube and lower drilling tool; Wherein be provided with optoelectronic composite cable in continuous-tube, in optoelectronic composite cable, include three-phase power cable, feed cable, signal cable and fiber optic cables; Ground control system comprises injection head, ground light electric transducer, PLC control module, cylinder, rectification adverser, step-up transformer, terrestrial information processing module; Lower drilling tool comprise connect successively connector, cable head pipe nipple, non-rotating joint, remote short section, electronic disconnection and circulating sub, drilling parameter measures pipe nipple, direction of deflection measures pipe nipple, electro-motor, electronic guiding pipe nipple, nearly drill bit measure pipe nipple and drill bit.This well system, by injecting electric power and the information channel that optoelectronic composite cable sets up ground and down-hole in continuous-tube, overcomes composite continuous tube shortcoming, coordinates existing continuous-tube and equipment can realize motorized and the intellectuality of continuous-tube drilling well.
Description
Technical field
The present invention relates to a kind of oil and gas well drilling equipment, particularly a kind of well system.
Background technology
Oil and gas well drilling is a underground concealed property engineering, when especially boring complex structural well and special well under complex geological condition, there is a difficult problem for a large amount of non-homogeneity, uncertainty, unstructuredness, nonumericization, solving drilling well "black box" problem in the urgent need to information technology, intelligent control technology being applied in drilling engineering.
Electric power between ground and shaft bottom how is set up and signalling channel realizes automation, the key of intelligent drilling in drilling process.In Signal transmissions, signal transmission form conventional at present comprises mud-pulse transmission, electromagnetic transmission and sonic transmissions.Wherein use the widest mud-pulse to there is transfer rate low, poor anti jamming capability, the shortcomings such as underbalance operating mode can not be used for, and electromagnetic transmission and the decay of sound wave signal transmission, limited transmission distance.Therefore, this several transmission means all becomes " bottleneck " of restriction intelligent drilling technical development.
Shaft bottom power in, at present mainly rely on down-hole battery or mud turbine generator.The drilling well of continuous-tube electric intelligent needs to install various sensor and control module in bottom drilling well combination, and the electrical power needed for electric bottom hole drilling motor and electronic guiding pipe nipple etc. is large, rely on battery or mud turbine generator to power and can not meet the demand of intelligent electric drilling well to electric power, best solution is from introducing shaft bottom, ground by forceful electric power and light current.
In direction of deflection measurement, the measurement parameter of three axis fluxgates and three axis accelerometer is extensively adopted to calculate hole angle, azimuth and tool face azimuth at present.Measuring apparatus is when near ferromagnetic material, because ferromagnetic material is to the interference in earth's magnetic field, the parameter measured based on fluxgate is insecure, therefore at cluster well drilling well, relief well drilling well and casing window sidetracking etc., there is the occasion of magnetic disturbance, conventional inclination measurement device is difficult to obtain reliable Magnetic tools face parameter.
The down-hole positive displacement motor of extensive use in drilling well is driven by drilling fluid, also exists and limits by fluid media (medium), and drilling parameter and hydraulic parameters such as to retrain mutually at the problem, accurately can not control the output speed of positive displacement motor and torque.In addition, have elastomeric material to make its high-temperature working performance poor in positive displacement motor, working life is short.
In the TRAJECTORY CONTROL of continuous-tube, mode conventional is at present that spin orientation device and skew-swept airfoil motor match, and the effect of spin orientation device is the tool face azimuth of rotating skew-swept airfoil motor, can creep into after reserving tool-face direction to assigned direction.When needs drilling straight-hole, spin orientation device needs to provide a lasting rotary motion, thus realizes straight line drilling well.This TRAJECTORY CONTROL mode requires that spin orientation device can provide enough driving torque to overcome the reaction torque of drill bit, and therefore spin orientation device normal length is long, complex structure.In addition, the well that this oriented approach gets out is level and smooth not, causes continuous-tube and wall friction resistance greatly, limits setting ability and the pressure of the drill applying performance of continuous-tube, be also unfavorable for the casing job in later stage.
For this reason, Chinese Patent Application No. CN201120156963.2, publication number CN202125247U disclose a kind of all-electric composite continuous tube drilling rig, as shown in Figure 1, the electro-motor 018 comprising drill bit 03 and drive drill bit 03 to rotate, also comprise the composite continuous tube 02 of embedded cable, continuous-tube roller 08, continuous-tube joint 010, measure the measuring mechanism 015 of downhole parameters, change the steering tool 016 of bit heading, well head place, ground is provided with the injection head 01 of clamping composite continuous tube 02.This composite continuous tube 02 is provided with mud runner, and mud runner communicates with the nozzle of drill bit 03; Composite continuous tube 02 is wound on continuous-tube roller 08, and lower end connects continuous-tube joint 010.Continuous-tube joint 010, measuring mechanism 015, steering tool 016 are connected in series successively with electro-motor 018, are also connected with automatically controlled propeller 014, automatically controlled disconnected de-device 013, downhole communication processor 012, down-hole power transformer 011 between continuous-tube joint 010 and measuring mechanism 015; Longitudinally is provided with cable passage in continuous-tube joint 010, the embedded cable of composite continuous tube 02 is through the cable passage of continuous-tube joint 010.Automatically controlled disconnected de-device leads to 013 cable crossing composite continuous tube 02 embedded and is connected with ground power supply 05.Between ground power supply 05 and composite continuous tube 02, be also connected with ground electrical power transformer 07 by cable, between composite continuous tube 02 and measuring mechanism 015, be also connected with down-hole power transformer 011 by cable.On ground, ground monitoring device 04 is connected by wire with ground communications processor 6.In down-hole, downhole communication processor 012 is connected by wire with measuring mechanism 15, steering tool 016, automatically controlled disconnected de-device 013 and electro-motor 018.Ground communications processor 06 is connected with downhole communication processor 012 by the cable that composite continuous tube 02 is embedded.
This all-electric composite continuous tube drilling rig adopts composite continuous tube 02 to realize the electric power of ground and down-hole and signalling channel is set up, although composite continuous tube 02 has the advantages such as corrosion resistance is good, body is light, fatigue life is high, inner passage is unimpeded, but composite continuous tube 02 is also in the laboratory research stage, technology is still immature, and there is following shortcoming:
(1) composite continuous tube 02 is expensive;
(2) composite continuous tube 02 is few in the application experience of Oil Field;
(3) composite continuous tube 02 shock resistance is low;
(4) most of composite material temperature resistance ability is lower than 100 C;
(5) composite continuous tube 02 rigidity is lower than steel continuous-tube, and drilling duty is restricted;
(6) composite continuous tube 02 is once damage, and repairs very difficult.
In addition, this patent adopts cable as the information transfer channel in ground and shaft bottom, and cable is a kind of transmission medium of transmission band relative narrower, its electrical characteristics and antijamming capability poor; The electric power of the ground power supply 05 of this drilling rig is to delivered downhole after ground electrical power transformer 07 transformation simultaneously, after down-hole power transformer 011 transformation, measuring mechanism 015, steering tool 016, automatically controlled propeller 014, automatically controlled disconnected de-device 013 and electro-motor 018 is flowed to again in down-hole power, carry out power transformer 011 in down-hole and connect trouble, add workload, and potential safety hazard is brought to operating personnel.
Summary of the invention
Goal of the invention of the present invention is: for the above-mentioned deficiency of the continuous-tube drilling rig employing composite continuous tube that prior art exists, a kind of well system is provided, this well system adopts common steel continuous-tube, electric power and the information channel of ground and down-hole is set up by injecting optoelectronic composite cable in continuous-tube, while overcoming composite continuous tube shortcoming, adopt existing continuous-tube and equipment can realize motorized and the intellectuality of continuous-tube drilling well.
To achieve these goals, the technical solution used in the present invention is:
A kind of well system, comprise ground control system and connect the continuous-tube of described ground control system, be provided with optoelectronic composite cable in described continuous-tube, described optoelectronic composite cable comprise power cable for transmitting forceful electric power, for transmit light current feed cable, for transmitting the signal cable of low bandwidth data or control signal and the fiber optic cables for high-speed bidirectional information channel.
Forceful electric power and light current can be introduced underground by power cable and feed cable respectively, can provide stable supply of electric power for down-hole lower drilling tool; Fiber optic cables can set up the high-speed bidirectional signal transmission passage of ground and down-hole, and optical-fibre communications transfer rate is high, antijamming capability strong, long transmission distance, can meet the needs that intelligent drilling interactive data information amount is large; And signal cable is for transmitting low bandwidth data or control signal.
Preferably, described ground control system comprises PLC control module, the cylinder of the described continuous-tube that reels and can clamp the injection head of described continuous-tube, described cylinder is provided with the ground light electric transducer connecting described optoelectronic composite cable, is connected with rectification adverser, step-up transformer, terrestrial information processing module between described PLC control module, described cylinder.
Rectification adverser, step-up transformer are arranged on ground, are oppositely arranged on down-hole, more convenient installation, dismounting, control, simultaneously safer.The signal of telecommunication measured by the various sensor of down-hole equipment is pass ground back by fiber optic cables after optical signal by electro-optic conversion, the signal of telecommunication is converted to again by the ground opto-electronic conversion in cylinder, and enter terrestrial information processing module after being drawn by cylinder, realize process and the calculating of signal, after the Storage and Processing that PLC control module realizes information, the screen being finally presented at driller control house understands underground working for driller personnel; Driller personnel are according to the ground control signal of delivering, after PLC control module, terrestrial information processing module, cylinder and ground electro-optic conversion, signal feedback is transferred to down-hole by the fiber optic cables in optoelectronic composite cable, be converted to electric control signal, control the execution corresponding actions of down-hole equipment relevant device.
Preferably, described cylinder is provided with bus ring, thus can realize the signal accurate transfer of ground and down-hole.
Preferably, this continuous-tube electric intelligent well system also comprises the lower drilling tool be connected with described continuous-tube end, described lower drilling tool comprise connect successively connector, cable head pipe nipple, remote short section, electronic disconnection and circulating sub, drilling parameter measures pipe nipple, direction of deflection measures pipe nipple, electro-motor, electronic guiding pipe nipple, nearly drill bit measure pipe nipple and drill bit, described connector connects described continuous-tube.
Lower drilling tool adopts modularized design, and the inserting tube two ends of adjacent two parts of lower drilling tool adopt rotary type connector, and convenient serial connection connects and dismounting, realizes being communicated with of electric power and signalling channel.Be provided with flap valve in cable head pipe nipple, prevent from occurring that mud refluxes during drilling well.
Preferably, non-rotating joint is connected with between described cable head pipe nipple and described remote short section.
The effect of non-rotating joint is not need pivot bottom drilling tool, cable head pipe nipple and remote short section can be linked together, convenient connection, dismounting.
Preferably, described non-rotating joint comprises top connection and lower contact, and described top connection connects described cable head pipe nipple, and described lower contact connects described remote short section.
Top connection and lower contact are cooperatively interacted be connected to form non-rotating joint by internal spline, external splines, adapter sleeves.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, this continuous-tube electric intelligent well system adopts common steel continuous-tube, the optoelectronic composite cable of power cable, feed cable, signal cable, fiber optic cables composition is provided with in continuous-tube, thus set up electric power and the information channel of ground and down-hole, overcome the shortcoming of composite continuous tube, adopt existing continuous-tube and equipment can realize motorized and the intellectuality of continuous-tube drilling well, the fields such as under balance pressure drilling, old well window sidetracking, cluster well drilling well and directed drilling can be widely used in;
2, rectification adverser, step-up transformer are arranged on ground by this continuous-tube electric intelligent well system, are oppositely arranged on down-hole, more convenient installation, dismounting, control, simultaneously safer;
3, lower drilling tool of the present invention adopts modularized design, the inserting tube two ends of each parts of lower drilling tool adopt rotary type connector, while carrying out the connection of parts string spinner, the inserting tube of its inside is serially connected by rotary type connector, realize being communicated with of electric power and signalling channel, not drilling tool string structure under modular, adds the flexibility that DHA connects, reduce the workload that downhole tool connects, can need to match corresponding down-hole lower drilling tool according to operation at the scene.
Accompanying drawing explanation
Fig. 1 is the structural representation of all-electric composite continuous tube drilling rig in prior art;
Fig. 2 is the structural representation of well system of the present invention;
Fig. 3 is the cross-sectional view of the optoelectronic composite cable in the present invention;
Fig. 4 is the down-hole equipment tool string syndeton schematic diagram in the present invention;
Fig. 5 is the loop control theory schematic diagram of well system of the present invention.
Mark in figure:
01, injection head, 02, composite continuous tube, 03, drill bit, 04, ground monitoring device, 05, ground power supply, 06, ground communications processor, 07, ground electrical power transformer, 08, continuous-tube roller, 09, slush pump, 010, continuous-tube joint, 011, down-hole power transformer, 012, downhole communication processor, 013, automatically controlled disconnected de-device, 014, automatically controlled propeller, 015, measuring mechanism, 016, steering tool, 017, one way valve, 018, electro-motor;
101, ground control system, 102, lower drilling tool, 1, driller control house, 2, PLC control module, 3, rectification adverser, 4, terrestrial information processing module, 5, step-up transformer, 6, ground light electric transducer, 7, cylinder, 8, injection head, 9, continuous-tube, 10, optoelectronic composite cable, 11, connector, 12, cable head pipe nipple, 13, non-rotating joint, 131, top connection, 132, lower contact, 14, remote short section, 15, electronic disconnection and circulating sub, 16, drilling parameter measures pipe nipple, 17, direction of deflection measures pipe nipple, 18, electro-motor, 19, electronic guiding pipe nipple, 20, nearly drill bit measures pipe nipple, 21, drill bit, 22, power cable, 23, feed cable, 24, signal cable, 25, fiber optic cables, 26, bus ring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 2,3, 4, continuous-tube intelligent electric well system, comprises ground control system 101, lower drilling tool 102, and connects the continuous-tube 9 of ground control system 101 and lower drilling tool 102; Wherein be provided with optoelectronic composite cable 10 in continuous-tube 9, three-phase power cable 22, feed cable 23, signal cable 24 and fiber optic cables 25 are included in optoelectronic composite cable 10, optoelectronic composite cable 10 is with continuous-tube 9 together G.I.H, thus the power set up between ground control system 101 and shaft bottom lower drilling tool 102 and information channel; Wherein ground control system 101 comprises injection head 8, ground light electric transducer 6, PLC control module 2, cylinder 7, and rectification adverser 3, step-up transformer 5, terrestrial information processing module 4; Wherein lower drilling tool 102 comprise connect successively connector 11, cable head pipe nipple 12, non-rotating joint 13, remote short section 14, electronic disconnection and circulating sub 15, drilling parameter measures pipe nipple 16, direction of deflection measures pipe nipple 17, electro-motor 18, electronic guiding pipe nipple 19, nearly drill bit measure pipe nipple 20 and drill bit 21.
Low pressure alternating current is by after above-mentioned rectification adverser 3 and step-up transformer 5; cylinder 7 through band bus ring 26 enters in continuous-tube 9; continuous-tube 9 is by injection head 8 G.I.H; High Level AC Voltage is transferred to the lower drilling tool in shaft bottom by optoelectronic composite cable 10 through three-phase power cable 22; power to downhole electric motor 18; drill bit 21 is driven to rotate; realize motor-driven drilling; can realize controlling the ac variable frequency speed regulation of downhole electric motor 18 by the rectification adverser 3 on ground, the parking defencive function of electro-motor 18 can also be set by PLC control module 2.Fiber optic cables 25 in optoelectronic composite cable 10 are as the signal transmission passage in ground and shaft bottom, it is pass ground back by fiber optic cables 25 after optical signal that the signal of telecommunication measured by various sensors of down-hole lower drilling tool carries out electro-optic conversion by remote short section 14, be converted to the signal of telecommunication by the ground light electric transducer 6 in cylinder 7 again and enter terrestrial information processing module 4 after being with the cylinder 7 of bus ring to draw, realize process and the calculating of signal, the screen being presented at driller control house 1 after the Storage and Processing that PLC control module 2 realizes information understands underground working for driller personnel, the ground control signal that driller personnel send is after the cylinder 7 and ground electrical to optical converter 6 of PLC control module 2, terrestrial information processing module 4, band bus ring 26, fiber optic cables 25 in optoelectronic composite cable 10 transfer to down-hole, carry out opto-electronic conversion through remote short section 14 and revert to electric control signal, actuating equipment action relevant under control well.
By connector 11, cable head pipe nipple 12, non-rotating joint 13, remote short section 14, electronic disconnection and circulating sub 15, drilling parameter measures pipe nipple 16, direction of deflection measures pipe nipple 17, electro-motor 18, electronic guiding pipe nipple 19, the lower drilling tool 102 that nearly drill bit measures pipe nipple 20 and drill bit 21 composition adopts modularized design, the inserting tube two ends of each parts of lower drilling tool 102 adopt rotary type connector, while carrying out the connection of parts string spinner, the inserting tube of its inside is serially connected by rotary type connector, but rotary type connector is the existing standard component realizing lower drilling tool 102 socket connection, thus realize being communicated with of electric power and signalling channel, modular tool string structure, adds the flexibility that DHA connects, and reduces the workload that downhole tool connects, and can need to match corresponding downhole tool according to operation at the scene.Illustrate respectively with regard to each component function of lower drilling tool 102 below:
1, cable head pipe nipple 12, cable head pipe nipple 12 mainly provides machinery and electric connection for follow-up underground tool string, and be provided with a disconnection weakness in it, cable can be broken herein; Also flap valve is integrated with, for for preventing mud from refluxing in this cable head pipe nipple 12;
2, non-rotating joint 13, non-rotating joint 13 is divided into top connection 131 and lower contact 132, top connection 131 is connected with cable head pipe nipple 12, lower contact 132 is connected with remote short section 14, and top connection 131 and lower contact 132 are cooperatively interacted be connected to form non-rotating joint 13 by internal spline, external splines, adapter sleeve; The effect of non-rotating joint 13 is exactly be connected to after on remote short section 14 by the joint of optoelectronic composite cable 10, does not need rotary tools, cable head pipe nipple 12 and remote short section 14 can be linked together by non-rotating joint 13;
3, remote short section 14, remote short section 14 is responsible for the signal communication under control well between lower drilling tool 102 and ground installation, its inside comprises power module, photoelectric conversion module and microprocessor module, remote short section 14 is fiber optic cables 25 cut offs in shaft bottom, the photoelectric conversion module be provided with in remote short section 14, is responsible for the conversion between optical signal and the signal of telecommunication; The measuring-signal of downhole sensor processes rear uniform transmission by remote short section 14 and goes back to ground, and the control signal that ground sends also is transferred to corresponding downhole tool by remote short section 14;
4, electronic disconnection and circulating sub 15, electronic disconnection and circulating sub 15 are provided with automatically controlled circulation bypass valve and electronic decoupler, are controlled by the signal of telecommunication, and bypass valve can at any time open and close, thus the flow channel of circulation of fluid is provided, improve annular space anti-speed; In addition, by sending the disconnection that signal can realize electronic disconnection and circulating sub 15 and lower end DHA from ground, thus the recovery of continuous-tube is realized when there is bit freezing;
5, drilling parameter pipe nipple 16 and direction of deflection measure pipe nipple 17, for parameters such as the pressure of the drill at the bottom of measuring well, moment of torsion, temperature, pressure, hole deviation, orientation and tool-face; Direction of deflection measures in pipe nipple 17 quick-connecting inertia measurement system being provided with three axis accelerometer and three axle solid-state gyros composition, this measuring system does not rely on the input of external information, diamagneticly can disturb, the accurate measurement in hole deviation and orientation can be realized under the geological conditions with magnetic disturbance;
6, electro-motor 18, electro-motor 18 is powered by the three-phase power cable core 22 of optoelectronic composite cable 10, there is no shaft bottom reducing gear, rotated by the rotor Direct driver drill bit 21 of motor, motor-driven drilling motor is by AC inverter driving system, accurately can control rotating speed and the moment of torsion of electro-motor 18, the parking defencive function of this electro-motor 18 can be set by the PLC control module 2 on ground;
7, electronic guiding pipe nipple 19, electronic guiding pipe nipple 19 is arranged on electro-motor 18 lower end, powered to guiding pipe nipple by the power supply cable core in photoelectric compound cable, its housing is furnished with three pieces of guide vanes, produce by controlling the guide vane backup borehole wall hole deviation and orientation that corresponding lateral force control drill bit creeps into, drill bit is crept into the direction of specifying; This control mode can obtain more level and smooth well track, contributes to the frictional resistance reducing continuous-tube and the borehole wall, improves setting ability and the pressure of the drill applying ability of continuous-tube, and provides more excellent wellbore quality for the casing job in later stage.
8, nearly drill bit measures pipe nipple 20, this nearly drill bit is measured pipe nipple 20 and is connected to drill bit rear, position and the attitude of drill bit can be measured more accurately, and measure the geologic parameter such as natural gamma and formation resistivity, measured parameter is transferred to remote short section by the signal cable in electro-motor 18 housing wall; Based on the measuring-signal that nearly drill bit measurement pipe nipple 20 feeds back, electronic guiding pipe nipple 19 can guide accurate the boring of drill bit 21 to reach rich accumulation of oil and gas region automatically, shorten the distance between sensor and drill bit 21, geosteering in the thin oil and gas zone of downhole closed loop control can be realized and creep into.
This continuous-tube intelligent electric well system has two cover closed control loop, as shown in Figure 5, in dashed rectangle is the closed control loop being positioned at down-hole, when not having ground guiding engineer to intervene, drilling parameter, trajectory parameters and geologic parameter measured by DHM-MWD system, downhole control system energy Automatic Optimal drilling parameter, and send control instruction to electro-motor 18 and electronic guiding pipe nipple 19, guide well track to creep into along Accumulation zone, thus realize the geologic steering drilling of downhole closed loop control; Another is the control loop between downhole tool and ground, the high-speed bidirectional communication of ground and down-hole is set up by optic fibre core 25, ground power supply system provides forceful electric power and light current by three-phase power cable core 22 and power supply cable core 23 to the various parts of down-hole and instrument, when well track needs to optimize, ground guiding engineer can send instruction by ground control system, real-time control is implemented to downhole electric motor 18 and electronic guiding pipe nipple 19, thus control drill bit creeps into the direction of specifying.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a well system, comprise ground control system (101) and connect the continuous-tube (9) of described ground control system (101), it is characterized in that, described continuous-tube (9) is steel continuous-tube (9), optoelectronic composite cable (10) is provided with in described continuous-tube (9), described optoelectronic composite cable (10) comprises the power cable (22) for transmitting forceful electric power, for transmitting the feed cable (23) of light current, for transmitting the signal cable (24) of low bandwidth data or control signal and the fiber optic cables (25) for high-speed bidirectional information channel.
2. a kind of well system according to claim 1, it is characterized in that, described ground control system (101) comprises PLC control module (2), reel described continuous-tube (9) cylinder (7) and the injection head (8) of described continuous-tube (9) can be clamped, described cylinder (7) is provided with the ground light electric transducer (6) connecting described optoelectronic composite cable (10), described PLC control module (2), rectification adverser (3) is connected with between described cylinder (7), step-up transformer (5), terrestrial information processing module (4).
3. a kind of well system according to claim 2, is characterized in that, described cylinder (7) is provided with bus ring (26).
4. according to the arbitrary described a kind of well system of claim 1-3, it is characterized in that, also comprise the lower drilling tool (102) be connected with described continuous-tube (9) end, described lower drilling tool (102) comprises the connector (11) connected successively, cable head pipe nipple (12), remote short section (14), electronic disconnection and circulating sub (15), drilling parameter measures pipe nipple (16), direction of deflection measures pipe nipple (17), electro-motor (18), electronic guiding pipe nipple (19), nearly drill bit measures pipe nipple (20) and drill bit (21), described connector (11) connects described continuous-tube (9).
5. a kind of well system according to claim 4, is characterized in that, is connected with non-rotating joint (13) between described cable head pipe nipple (12) and described remote short section (14).
6. a kind of well system according to claim 5, it is characterized in that, described non-rotating joint (13) comprises top connection (131) and lower contact (132), described top connection (131) connects described cable head pipe nipple (12), and described lower contact (132) connects described remote short section (14).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310336669.3A CN103352656B (en) | 2013-08-05 | 2013-08-05 | A kind of well system |
| PCT/CN2013/088579 WO2015018147A1 (en) | 2013-08-05 | 2013-12-05 | Drilling system |
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| CN201310336669.3A CN103352656B (en) | 2013-08-05 | 2013-08-05 | A kind of well system |
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| CN103352656B true CN103352656B (en) | 2015-08-12 |
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| CN103352656B (en) * | 2013-08-05 | 2015-08-12 | 四川宏华石油设备有限公司 | A kind of well system |
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| CN105370265A (en) * | 2015-11-30 | 2016-03-02 | 上海帝可容数字科技有限公司 | Drill bit guide device |
| CN106884647A (en) * | 2015-12-10 | 2017-06-23 | 中国石油天然气股份有限公司 | Oil well detection device and oil well detection method |
| CN106014374A (en) * | 2016-07-12 | 2016-10-12 | 中国石油集团长城钻探工程有限公司 | Gyro measurement device for coiled tubing drilling |
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| CN117328804A (en) * | 2023-11-09 | 2024-01-02 | 北京国钻技术有限公司 | Intelligent drilling system and method for coiled tubing |
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Also Published As
| Publication number | Publication date |
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| WO2015018147A1 (en) | 2015-02-12 |
| CN103352656A (en) | 2013-10-16 |
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