CN103147711A - Grinding and milling tool for oil well or water well and using method thereof - Google Patents
Grinding and milling tool for oil well or water well and using method thereof Download PDFInfo
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- CN103147711A CN103147711A CN2013100944013A CN201310094401A CN103147711A CN 103147711 A CN103147711 A CN 103147711A CN 2013100944013 A CN2013100944013 A CN 2013100944013A CN 201310094401 A CN201310094401 A CN 201310094401A CN 103147711 A CN103147711 A CN 103147711A
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Abstract
The invention provides a grinding and milling tool for an oil well or a water well and a using method thereof. The grinding and milling tool comprises a hydraulic anchoring device (1), a bit pressure control device (2), a hydraulic motor (3), a power transmission system (4), a retarding mechanism (5) and an output terminal (6), wherein the hydraulic motor (3) is arranged in a hydraulic cylinder (9) of the bit pressure control device (2); the upper end of the hydraulic cylinder (9) of the bit pressure control device (2) is connected with the exterior of the lower end of the hydraulic anchoring device (1) in a sheathing way; the lower end of the hydraulic cylinder (9) of the bit pressure control device (2) is connected with the exterior of the upper end of the power transmission system (4) in the sheathing way; and the upper end of the output terminal (6) is connected with the exterior of the lower end of the retarding mechanism (5) in the sheathing way. With the adoption of the grinding and milling tool for the oil well or the water well provided by the invention, the maintenance work of grinding and milling the oil well can be finished at high efficiency and low cost under the similar situations that an object is enabled to fall into the oil well or the water well, a packer is deadly blocked in the well, the subsurface deformation is trimmed or a bushing pipe is dislocated, and an object falling into the well during the well drilling process or the well building process cannot be salvaged.
Description
Technical field
The present invention relates to the milling of oil well, well trouble of lost tool in hole and stuck point, a kind of milling tool for oil well, well and using method thereof are provided especially.
Background technology
Along with the development growth of China's oil industry, the continuous passing of time, the variation of underground work, the maintenance problem of oil well is also thereupon more and more important, and the application of milling tool is also more and more extensive.As when the following situation, all need to use milling tool to carry out milling operation: running string cement is dead; Packer is stuck in well; The distortion of finishing down-hole or bad break sleeve pipe; Trouble of lost tool in hole in the drilling well that processing can't be salvaged or well workover process.So, ubiquitous to workover treatment milling work from drillng operation.
The method of processing at present the trouble of lost tool in hole milling mainly contains the milling of overhaul drilling tool, the method is that driving torque directly is sent to trouble of lost tool in hole milling position from well head by drilling tool, at high angle hole, when horizontal well carries out milling operation, leaned on by the impact of various factors, Ground Operation machine lifting force is difficult to accurately control downhole weight on bit, and misoperation very easily causes bit freezing or bit bouncing; And owing to affected by flex point frictional force, drilling tool bears higher moment of torsion when operation, and most of driving torque is consumed by frictional force.Mill operation if carry out grinding set in deep-well, use conventional centrifugal grinding tool to exist the activity duration long, the problem such as operating cost is large, and operating cost is too high.Mill operation if carry out grinding set in deep-well, use conventional centrifugal grinding tool to have long, the problem such as danger coefficient is high, operating cost is high of activity duration.
Therefore, in order to solve the above problems, people are studying always and a kind ofly can accurately control milling the pressure of the drill, can guarantee again the driving torque that provides enough, complete milling method and the instrument of workover treatment simultaneously with can also reducing workover cost and efficient quick.
Summary of the invention
The object of the present invention is to provide a kind of milling tool for oil well, well and using method thereof, to solve trouble of lost tool in hole milling operation in the past, especially be directed to high angle hole, horizontal well milling construction and both can't accurately control milling the pressure of the drill, can't guarantee again the driving torque and the high problem of cost that provide enough.
The present invention puies forward the milling tool and the using method thereof that are used for oil well, well of indescribably confession, and wherein, the hommization of milling tool structure design can high efficiency, solve oil well milling maintenance work at low cost.As to the oil well junk, running string and instrument cement are dead, and packer is stuck in well, finishing down-hole distortion or bad break sleeve pipe, the processing of this type of situation such as trouble of lost tool in hole in the drilling well that processing can't be salvaged or well workover process.
The technical solution adopted for the present invention to solve the technical problems is a kind of milling tool for oil well, well, and described milling tool for oil well, well comprises hydraulic anchoring device 1, drilling pressure control apparatus 2, hydraulic motor 3, power drive system 4, reducing gear 5, outlet terminal 6;
Described drilling pressure control apparatus 2 comprises hydraulic cylinder 9, piston 10, and wherein, piston 10 is placed in hydraulic cylinder 9; Described drilling pressure control apparatus 2 is mainly used in the control of milling the pressure of the drill, when carrying out milling work, by the working fluid pressure that input is set act on hydraulic cylinder 9 and piston 10 on effective pressure area, be hydraulic thrust with hydraulic potential energy converting and energy, by controlling hydraulic thrust size control work the pressure of the drill; According to the difference of different oil wells to the pressure of the drill requirement, the cylinder pressure of annex solution as required 9 that can be autonomous, initial the pressure of the drill power of milling tool is 0.8 ton, if the working fluid pressure of input is 3.5MPa, after increasing one-level hydraulic cylinder 9, hydraulic thrust is brought up to 17000N, the pressure of the drill power is brought up to 1.7 tons, after increasing two-stage hydraulic cylinder 9, hydraulic thrust is brought up to 24740N, and the pressure of the drill power is brought up to 2.4 tons;
described reducing gear 5 comprises power shaft 16, internal tooth casing 17, planetary reduction gear 18, output shaft 19, wherein, the lower end of power shaft 16 is connected with the upper end of output shaft 19, internal tooth casing 17 be socketed on power shaft 16 and output shaft 19 outside, planetary reduction gear 18 is placed in the cavity that power shaft 16, output shaft 19, internal tooth casing 17 threes surround, and an end of planetary reduction gear 18 is connected with power shaft 16, and the other end is connected with output shaft 19, to complete the milling task and must guarantee enough moments of torsion in milling work, the output that reaches low moment of torsion due to the high rotating speed of hydraulic motor 3 can't reach the milling job requirement, milling tool provided by the present invention makes hydraulic motor 3 power outputs reduce rotating speed to increase driving torque through realizing after reducing gear 5, be delivered to the power shaft 16 of reducing gear 5 when rotating speed and driving torque, the driving tooth of planetary reduction gear 18 and four planetary gear interlock rotations, export through after double reduction, reaching slows down increases the purpose of driving torque, then rotating speed and driving torque act on the junk top of fish by outlet terminal 6, the pressure of the drill power that coordinates the pressure of the drill device to provide is completed milling work, it is high that reducing gear 5 has efficient, the simple characteristics of result, its gearratio is 1:7.11,
Described hydraulic motor 3 is placed in the hydraulic cylinder 9 of drilling pressure control apparatus 2, piston 10 is placed in hydraulic motor 3 upper surfaces, hydraulic cylinder 9 upper ends of drilling pressure control apparatus 2 are socketed on outside hydraulic anchoring device 1 lower end, hydraulic cylinder 9 lower ends of drilling pressure control apparatus 2 are socketed on outside the upper end of power drive system 4, internal tooth casing 17 upper ends of reducing gear 5 are socketed on outside power drive system 4 lower ends, and outlet terminal 6 upper ends are socketed on outside reducing gear 5 lower ends.
Milling tool for oil well, well of the present invention, wherein, described hydraulic anchoring device 1 comprises anchor body 7, anchor fluke 8, wherein, anchor fluke 8 is placed in the cavity of anchor body 7 sides settings; Described hydraulic anchoring device 1 is used for solving the problem of down-hole countertorque, cementing truck is suppressed hydraulic anchoring device 1 by drilling rod or oil pipe, make the anchor fluke 8 of hydraulic anchoring device 1 stretch out anchor body 7, be supported on sleeve pipe, with the inwall interlock of sleeve pipe, the countertorque that produces when preventing that the milling tool outer wall from working because of milling tool like this rotates.
Milling tool for oil well, well of the present invention, wherein, described hydraulic motor 3 comprises stator 11, rotor 12, power output shaft 13, wherein, stator 11 is socketed on outside rotor 12, and the lower end is connected with the upper end of sliding key sleeve 14, and the lower end of rotor 12 is connected with the upper end of power output shaft 13, the lower end of power output shaft 13 is connected with the upper end of power rotation axis 15, and sliding key sleeve 14 is socketed on outside power output shaft 13; Described hydraulic motor 3 is for milling tool provides power, and during work, when liquid enters hydraulic motor 3, hydraulic coupling is impelled rotor 12 rotations, and hydraulic motor 3 changes liquid potential energy into the rotation function of rotor 12, and with rotating speed and driving torque output.
Milling tool for oil well, well of the present invention, wherein, described power drive system 4 comprises sliding key sleeve 14, power rotation axis 15, wherein, sliding key sleeve 14 is socketed on outside power rotation axis 15, the lower end of power rotation axis 15 is connected with the upper end of the power shaft 16 of reducing gear 5, and the lower end of sliding key sleeve 14 is socketed on outside power shaft 16, and is placed in the cavity of power shaft 16 and internal tooth casing 17 formations; During work, the hydraulic thrust of drilling pressure control apparatus 2 and the outputting power of hydraulic motor 3 are passed to reducing gear 5.
Milling tool for oil well, well of the present invention, wherein, described planetary reduction gear 18 comprises driving tooth, four planetary gears, wherein, four planetary gears are meshed with driving tooth respectively.
Milling tool for oil well, well of the present invention, wherein, described outlet terminal 6 comprises banjo fixing butt jointing 20, out splice going splice 21, wherein, banjo fixing butt jointing 20 is socketed on outside out splice going splice 21.
The using method of the milling tool for oil well, well of the present invention, wherein, described using method comprises the following steps,
(1), with special-purpose jack rabbit drifting to the junk top of fish under oil well, Water Well maybe need to repair the cover position;
(2), be connected with hydraulic anchoring device 1 with drilling rod or oil pipe one end, then will be lowered to for the milling tool of oil well, well junk top of fish under oil well, Water Well by the ground workover rig and maybe need to repair the cover position;
(3), before the milling tool that is used for oil well, well maybe needs to repair the position down to the junk top of fish under oil well, Water Well, measure and be used for oil well, the milling tool of well and the suspending weight of drilling rod or oil pipe, and record, under action of gravitation, the milling tool that is used for oil well, well is compressed to the shortest route state, records the degree of depth of drilling rod or beam hanger; The data of the degree of depth of measuring, as step 4 comparable data, milling tool this depth data in milling work can change with working condition, by understanding instrument in down-hole milling progress and milling situation with the Data Comparison of record.
(4), upper drawings is in milling tool and drilling rod or the beam hanger of oil well, well, until the suspending weight that is used for the milling tool of oil well, well and drilling rod or oil pipe is less than 0.4～0.6 ton of the measured suspending weight of step (3);
(5), with pump truck by drilling rod or beam hanger to being used for oil well, the milling tool of well is suppressed, under the effect of pressure differential, anchor fluke 8 in hydraulic anchoring device 1 stretches out on the inwall that is supported on sleeve pipe, inwall interlock with sleeve pipe, realize being used for oil well, vertical grappling of the milling tool of well and sleeve pipe, when pressure reaches the rated operating pressure 3～4MPa of hydraulic motor 3, hydraulic motor 3 is started working, hydraulic motor 3 output torque 900N/m, rotating speed 110～170r/min, the output torque of hydraulic motor 3 and rotating speed rotate by the power rotation axis 15 of power drive system 4, it is the reducing gear 5 of 1:7.11 through speed reducing ratio, reduce rotating speed and increase moment of torsion, the driving torque of output 6399N/m, meanwhile, rated operating pressure 3～4MPa of reaching with hydraulic motor 3 of drilling pressure control apparatus 2 produces the hydraulic thrust of 8000～24740N, at last with the hydraulic thrust of 8000～24740N and the out splice going splice 21 of the driving torque after increasing by outlet terminal 6 act on the junk top of fish under oil well, Water Well or repair the cover position, carry out milling work,
(6), after the milling tool that is used for oil well, well is completed the one action stroke, pump truck termination of pumping pressure release, repeating step (4), (5) are until milling work is completed;
(7), complete milling work after, continue with one week of water flushing, milling tool recurs out.
The using method of the milling tool for oil well, well of the present invention, wherein, described hydraulic motor 3 rated operating pressures are 3～4MPa, output torque 900N/m, rotating speed 110～170r/min, corresponding drilling pressure control apparatus 2 produces the hydraulic thrust of 8000～24740N, and reducing gear 5 speed reducing ratio are 1:7.11, turn the increase moment of torsion by reducing speed, the driving torque of output 6399N/m.
Milling tool for oil well, well of the present invention, design parameter is as follows: total length is: 7785～6985mm; Gross weight: 420 kilograms; Stroke: 800mm; Speed reducing ratio/gearratio: 2.67*2.67=7.11; Theoretical output torque: 900*7.11=6399N.m(is without when friction); Output speed: 15.45～23.9r/min; Through-hole diameter: 35mm; Instrument transmission turning: forward.
Milling tool for oil well, well of the present invention, running parameter is as follows:
Peak torque=hydraulic motor 3 output torque * gearratios of carrying when (1), working=when 900*7.11=6399N.m(efficient is 100%);
(2), the revolution radius of clean-up of planetary gear wheel shaft is 36mm, suffered maximum tangential force P=6399000/ (36/4)=44437.5N;
The pass of steel tensile strength and shear strength is: τ=σ b/ √ 3
The tensile strength of 42CrMo is 1080 σ b/MPa, tries to achieve according to top design formulas:
1080/√3=624
Shearing resistance=624 * 82 π/4=31365N(42CrMo quenches);
Operating efficiency is 1 o'clock, and safety factor is 0.71; Operating efficiency is 0.6 o'clock, and safety factor is 1.18.
(3), reducing gear 5 is two-stage 2K-H planet gear transmission, gearratio is 1:7.11; The strength check of reducer output shaft 19: operating efficiency is 1 o'clock, and safety factor is 1.15; Operating efficiency is 0.6 o'clock, and safety factor is that 1.4(42CrMo quenches).
The using method of the milling tool for oil well, well of the present invention, wherein, what hydraulic anchoring device 1 adopted is hydraulic anchor.
Description of drawings
Fig. 1 is for being used for the generalized section of oil well, well milling tool;
The specific embodiment
Embodiment 1
The described milling tool for oil well, well of the present embodiment as shown in Figure 1, comprises hydraulic anchoring device 1, drilling pressure control apparatus 2, hydraulic motor 3, power drive system 4, reducing gear 5, outlet terminal 6;
Described drilling pressure control apparatus 2 comprises hydraulic cylinder 9, piston 10, and as shown in Figure 1, piston 10 is placed in hydraulic cylinder 9; Described drilling pressure control apparatus 2 is mainly used in the control of milling the pressure of the drill, when carrying out milling work, by the working fluid pressure that input is set act on hydraulic cylinder 9 and piston 10 on effective pressure area, be hydraulic thrust with hydraulic potential energy converting and energy, by controlling hydraulic thrust size control work the pressure of the drill; According to the difference of different oil wells to the pressure of the drill requirement, the cylinder pressure of annex solution as required 9 that can be autonomous, initial the pressure of the drill power of milling tool is 0.8 ton, if the working fluid pressure of input is 3.5MPa, after increasing one-level hydraulic cylinder 9, hydraulic thrust is brought up to 17000N, the pressure of the drill power is brought up to 1.7 tons, after increasing two-stage hydraulic cylinder 9, hydraulic thrust is brought up to 24740N, and the pressure of the drill power is brought up to 2.4 tons;
described reducing gear 5 comprises power shaft 16, internal tooth casing 17, planetary reduction gear 18, output shaft 19, as shown in Figure 1, the lower end of power shaft 16 is connected with the upper end of output shaft 19, internal tooth casing 17 be socketed on power shaft 16 and output shaft 19 outside, planetary reduction gear 18 is placed in the cavity that power shaft 16, output shaft 19, internal tooth casing 17 threes surround, and an end of planetary reduction gear 18 is connected with power shaft 16, and the other end is connected with output shaft 19, to complete the milling task and must guarantee enough moments of torsion in milling work, the output that reaches low moment of torsion due to the high rotating speed of hydraulic motor 3 can't reach the milling job requirement, milling tool provided by the present invention makes hydraulic motor 3 power outputs reduce rotating speed to increase driving torque through realizing after reducing gear 5, be delivered to the power shaft 16 of reducing gear 5 when rotating speed and driving torque, the driving tooth of planetary reduction gear 18 and four planetary gear interlock rotations, export through after double reduction, reaching slows down increases the purpose of driving torque, then rotating speed and driving torque act on the junk top of fish by outlet terminal 6, the pressure of the drill power that coordinates the pressure of the drill device to provide is completed milling work, changing reducing gear 5, to have efficient high, the simple characteristics of result, its gearratio is 1:7.11,
Described hydraulic motor 3 is placed in the hydraulic cylinder 9 of drilling pressure control apparatus 2, piston 10 is placed in hydraulic motor 3 upper surfaces, hydraulic cylinder 9 upper ends of drilling pressure control apparatus 2 are socketed on outside hydraulic anchoring device 1 lower end, hydraulic cylinder 9 lower ends of drilling pressure control apparatus 2 are socketed on outside the upper end of power drive system 4, internal tooth casing 17 upper ends of reducing gear 5 are socketed on outside power drive system 4 lower ends, and outlet terminal 6 upper ends are socketed on outside reducing gear 5 lower ends.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described hydraulic anchoring device 1 comprises anchor body 7, anchor fluke 8, wherein, anchor fluke 8 is placed in the cavity of anchor body 7 sides settings; Described hydraulic anchoring device 1 is used for solving the problem of down-hole countertorque, cementing truck is suppressed hydraulic anchoring device 1 by drilling rod or beam hanger, make the anchor fluke 8 of hydraulic anchoring device 1 stretch out anchor body 7, be supported on sleeve pipe, with the inwall interlock of sleeve pipe, the countertorque that produces when preventing that the milling tool outer wall from working because of milling tool like this rotates.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described hydraulic motor 3 comprises stator 11, rotor 12, power output shaft 13, wherein, stator 11 is socketed on outside rotor 12, and the lower end is connected with the upper end of sliding key sleeve 14, and the lower end of rotor 12 is connected with the upper end of power output shaft 13, the lower end of power output shaft 13 is connected with the upper end of power rotation axis 15, and sliding key sleeve 14 is socketed on outside power output shaft 13; Described hydraulic motor 3 is for milling tool provides power, and during work, when liquid enters hydraulic motor 3, hydraulic coupling is impelled rotor 12 rotations, and hydraulic motor 3 changes liquid potential energy into the rotation function of rotor 12, and with rotating speed and driving torque output.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described power drive system 4 comprises sliding key sleeve 14, power rotation axis 15, wherein, sliding key sleeve 14 is socketed on outside power rotation axis 15, the lower end of power rotation axis 15 is connected with the upper end of the power shaft 16 of reducing gear 5, and the lower end of sliding key sleeve 14 is socketed on outside power shaft 16, and is placed in the cavity of power shaft 16 and internal tooth casing 17 formations; During work, the hydraulic thrust of drilling pressure control apparatus 2 and the outputting power of hydraulic motor 3 are passed to reducing gear 5.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described planetary reduction gear 18 comprises driving tooth, four planetary gears, wherein, four planetary gears are meshed with driving tooth respectively.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described outlet terminal 6 comprises banjo fixing butt jointing 20, out splice going splice 21, wherein, banjo fixing butt jointing 20 is socketed on outside out splice going splice 21.
The using method of the described milling tool for oil well, well of the present embodiment, wherein, described using method comprises the following steps,
(1), with special-purpose jack rabbit drifting to the junk top of fish under oil well, Water Well maybe need to repair the cover position;
(2), be connected with hydraulic anchoring device 1 with drilling rod or oil pipe one end, then will be lowered to for the milling tool of oil well, well junk top of fish under oil well, Water Well by the ground workover rig and maybe need to repair the cover position;
(3), before the milling tool that is used for oil well, well maybe needs to repair the position down to the junk top of fish under oil well, Water Well, measure and be used for oil well, the milling tool of well and the suspending weight of drilling rod or oil pipe, and record, under action of gravitation, the milling tool that is used for oil well, well is compressed to the shortest route state, records the degree of depth of drilling rod or beam hanger; The data of the degree of depth of measuring, as step 4 comparable data, milling tool this depth data in milling work can change with working condition, by understanding instrument in down-hole milling progress and milling situation with the Data Comparison of record.
(4), upper drawings is in milling tool and drilling rod or the beam hanger of oil well, well, until the suspending weight that is used for the milling tool of oil well, well and drilling rod or oil pipe is less than 0.4～0.6 ton of the measured suspending weight of step (3);
(5), with pump truck by drilling rod or beam hanger to being used for oil well, the milling tool of well is suppressed, under the effect of pressure differential, anchor fluke 8 in hydraulic anchoring device 1 stretches out on the inwall that is supported on sleeve pipe, inwall interlock with sleeve pipe, realize being used for oil well, vertical grappling of the milling tool of well and sleeve pipe, when pressure reaches the rated operating pressure 3MPa of hydraulic motor 3, hydraulic motor 3 is started working, hydraulic motor 3 output torque 900N/m, rotating speed 110r/min, the output torque of hydraulic motor 3 and rotating speed rotate by the power rotation axis 15 of power drive system 4, it is the reducing gear 5 of 1:7.11 through speed reducing ratio, reduce rotating speed and increase moment of torsion, the driving torque of output 6399N/m, meanwhile, the rated operating pressure 3MPa that reaches with hydraulic motor 3 of drilling pressure control apparatus 2 produces the hydraulic thrust of 8000N, at last with the hydraulic thrust of 8000N and the out splice going splice 21 of the driving torque after increasing by outlet terminal 6 act on the junk top of fish under oil well, Water Well or repair the cover position, carry out milling work,
(7), complete milling work after, continue with one week of water flushing, milling tool recurs out.
The using method of the milling tool for oil well, well of the present invention, wherein, described hydraulic motor 3 rated operating pressures are 3MPa, output torque 900N/m, rotating speed 110r/min, corresponding drilling pressure control apparatus 2 produces the hydraulic thrust of 8000N, and reducing gear 5 speed reducing ratio are 1:7.11, turn the increase moment of torsion by reducing speed, the driving torque of output 6399N/m.
Embodiment 2
The described milling tool for oil well, well of the present embodiment as shown in Figure 1, comprises hydraulic anchoring device 1, drilling pressure control apparatus 2, hydraulic motor 3, power drive system 4, reducing gear 5, outlet terminal 6;
Described drilling pressure control apparatus 2 comprises hydraulic cylinder 9, piston 10, and as shown in Figure 1, piston 10 is placed in hydraulic cylinder 9; Described drilling pressure control apparatus 2 is mainly used in the control of milling the pressure of the drill, when carrying out milling work, by the working fluid pressure that input is set act on hydraulic cylinder 9 and piston 10 on effective pressure area, be hydraulic thrust with hydraulic potential energy converting and energy, by controlling hydraulic thrust size control work the pressure of the drill; According to the difference of different oil wells to the pressure of the drill requirement, the cylinder pressure of annex solution as required 9 that can be autonomous, initial the pressure of the drill power of milling tool is 0.8 ton, if the working fluid pressure of input is 3.5MPa, after increasing one-level hydraulic cylinder 9, hydraulic thrust is brought up to 17000N, the pressure of the drill power is brought up to 1.7 tons, after increasing two-stage hydraulic cylinder 9, hydraulic thrust is brought up to 24740N, and the pressure of the drill power is brought up to 2.4 tons;
described reducing gear 5 comprises power shaft 16, internal tooth casing 17, planetary reduction gear 18, output shaft 19, as shown in Figure 1, the lower end of power shaft 16 is connected with the upper end of output shaft 19, internal tooth casing 17 be socketed on power shaft 16 and output shaft 19 outside, planetary reduction gear 18 is placed in the cavity that power shaft 16, output shaft 19, internal tooth casing 17 threes surround, and an end of planetary reduction gear 18 is connected with power shaft 16, and the other end is connected with output shaft 19, to complete the milling task and must guarantee enough moments of torsion in milling work, the output that reaches low moment of torsion due to the high rotating speed of hydraulic motor 3 can't reach the milling job requirement, milling tool provided by the present invention makes hydraulic motor 3 power outputs reduce rotating speed to increase driving torque through realizing after reducing gear 5, be delivered to the power shaft 16 of reducing gear 5 when rotating speed and driving torque, the driving tooth of planetary reduction gear 18 and four planetary gear interlock rotations, export through after double reduction, reaching slows down increases the purpose of driving torque, then rotating speed and driving torque act on the junk top of fish by outlet terminal 6, the pressure of the drill power that coordinates the pressure of the drill device to provide is completed milling work, changing reducing gear 5, to have efficient high, the simple characteristics of result, its gearratio is 1:7.11,
Described hydraulic motor 3 is placed in the hydraulic cylinder 9 of drilling pressure control apparatus 2, piston 10 is placed in hydraulic motor 3 upper surfaces, hydraulic cylinder 9 upper ends of drilling pressure control apparatus 2 are socketed on outside hydraulic anchoring device 1 lower end, hydraulic cylinder 9 lower ends of drilling pressure control apparatus 2 are socketed on outside the upper end of power drive system 4, internal tooth casing 17 upper ends of reducing gear 5 are socketed on outside power drive system 4 lower ends, and outlet terminal 6 upper ends are socketed on outside reducing gear 5 lower ends.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described hydraulic anchoring device 1 comprises anchor body 7, anchor fluke 8, wherein, anchor fluke 8 is placed in the cavity of anchor body 7 sides settings; Described hydraulic anchoring device 1 is used for solving the problem of down-hole countertorque, cementing truck is suppressed hydraulic anchoring device 1 by drilling rod or beam hanger, make the anchor fluke 8 of hydraulic anchoring device 1 stretch out anchor body 7, be supported on sleeve pipe, with the inwall interlock of sleeve pipe, the countertorque that produces when preventing that the milling tool outer wall from working because of milling tool like this rotates.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described hydraulic motor 3 comprises stator 11, rotor 12, power output shaft 13, wherein, stator 11 is socketed on outside rotor 12, and the lower end is connected with the upper end of sliding key sleeve 14, and the lower end of rotor 12 is connected with the upper end of power output shaft 13, the lower end of power output shaft 13 is connected with the upper end of power rotation axis 15, and sliding key sleeve 14 is socketed on outside power output shaft 13; Described hydraulic motor 3 is for milling tool provides power, and during work, when liquid enters hydraulic motor 3, hydraulic coupling is impelled rotor 12 rotations, and hydraulic motor 3 changes liquid potential energy into the rotation function of rotor 12, and with rotating speed and driving torque output.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described power drive system 4 comprises sliding key sleeve 14, power rotation axis 15, wherein, sliding key sleeve 14 is socketed on outside power rotation axis 15, the lower end of power rotation axis 15 is connected with the upper end of the power shaft 16 of reducing gear 5, and the lower end of sliding key sleeve 14 is socketed on outside power shaft 16, and is placed in the cavity of power shaft 16 and internal tooth casing 17 formations; During work, the hydraulic thrust of drilling pressure control apparatus 2 and the outputting power of hydraulic motor 3 are passed to reducing gear 5.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described planetary reduction gear 18 comprises driving tooth, four planetary gears, wherein, four planetary gears are meshed with driving tooth respectively.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described outlet terminal 6 comprises banjo fixing butt jointing 20, out splice going splice 21, wherein, banjo fixing butt jointing 20 is socketed on outside out splice going splice 21.
The using method of the described milling tool for oil well, well of the present embodiment, wherein, described using method comprises the following steps,
(1), with special-purpose jack rabbit drifting to the junk top of fish under oil well, Water Well maybe need to repair the cover position;
(2), be connected with hydraulic anchoring device 1 with drilling rod or oil pipe one end, then will be lowered to for the milling tool of oil well, well junk top of fish under oil well, Water Well by the ground workover rig and maybe need to repair the cover position;
(3), be used for oil well, well milling tool and maybe need to repair the position down to the junk top of fish under oil well, Water Well before, measure and be used for oil well, the milling tool of well and the suspending weight of drilling rod or oil pipe, and record, under action of gravitation, the milling tool that is used for oil well, well is compressed to the shortest route state, records the degree of depth of drilling rod or beam hanger; The data of the degree of depth of measuring, as step 4 comparable data, milling tool this depth data in milling work can change with working condition, by understanding instrument in down-hole milling progress and milling situation with the Data Comparison of record.
(4), upper drawings is in milling tool and drilling rod or the beam hanger of oil well, well, until the suspending weight that is used for the milling tool of oil well, well and drilling rod or oil pipe is less than 0.4～0.6 ton of the measured suspending weight of step (3);
(5), with pump truck by drilling rod or beam hanger to being used for oil well, the milling tool of well is suppressed, under the effect of pressure differential, anchor fluke 8 in hydraulic anchoring device 1 stretches out on the inwall that is supported on sleeve pipe, inwall interlock with sleeve pipe, realize being used for oil well, vertical grappling of the milling tool of well and sleeve pipe, when pressure reaches the rated operating pressure 4MPa of hydraulic motor 3, hydraulic motor 3 is started working, hydraulic motor 3 output torque 900N/m, rotating speed 170r/min, the output torque of hydraulic motor 3 and rotating speed rotate by the power rotation axis 15 of power drive system 4, it is the reducing gear 5 of 1:7.11 through speed reducing ratio, reduce rotating speed and increase moment of torsion, the driving torque of output 6399N/m, meanwhile, the rated operating pressure 4MPa that reaches with hydraulic motor 3 of drilling pressure control apparatus 2 produces the hydraulic thrust of 24740N, at last with the hydraulic thrust of 24740N and the out splice going splice 21 of the driving torque after increasing by outlet terminal 6 act on the junk top of fish under oil well, Water Well or repair the cover position, carry out milling work,
(6), after the milling tool that is used for oil well, well is completed the one action stroke, pump truck termination of pumping pressure release, repeating step (4), (5) are until milling work is completed;
(7), complete milling work after, continue with one week of water flushing, milling tool recurs out.
The using method of the milling tool for oil well, well of the present invention, wherein, described hydraulic motor 3 rated operating pressures are 4MPa, output torque 900N/m, rotating speed 170r/min, corresponding drilling pressure control apparatus 2 produces the hydraulic thrust of 24740N, and reducing gear 5 speed reducing ratio are 1:7.11, turn the increase moment of torsion by reducing speed, the driving torque of output 6399N/m.
Embodiment 3
The described milling tool for oil well, well of the present embodiment as shown in Figure 1, comprises hydraulic anchoring device 1, drilling pressure control apparatus 2, hydraulic motor 3, power drive system 4, reducing gear 5, outlet terminal 6;
Described drilling pressure control apparatus 2 comprises hydraulic cylinder 9, piston 10, and as shown in Figure 1, piston 10 is placed in hydraulic cylinder 9; Described drilling pressure control apparatus 2 is mainly used in the control of milling the pressure of the drill, when carrying out milling work, by the working fluid pressure that input is set act on hydraulic cylinder 9 and piston 10 on effective pressure area, be hydraulic thrust with hydraulic potential energy converting and energy, by controlling hydraulic thrust size control work the pressure of the drill; According to the difference of different oil wells to the pressure of the drill requirement, the cylinder pressure of annex solution as required 9 that can be autonomous, initial the pressure of the drill power of milling tool is 0.8 ton, if the working fluid pressure of input is 3.5MPa, after increasing one-level hydraulic cylinder 9, hydraulic thrust is brought up to 17000N, the pressure of the drill power is brought up to 1.7 tons, after increasing two-stage hydraulic cylinder 9, hydraulic thrust is brought up to 24740N, and the pressure of the drill power is brought up to 2.4 tons;
described reducing gear 5 comprises power shaft 16, internal tooth casing 17, planetary reduction gear 18, output shaft 19, as shown in Figure 1, the lower end of power shaft 16 is connected with the upper end of output shaft 19, internal tooth casing 17 be socketed on power shaft 16 and output shaft 19 outside, planetary reduction gear 18 is placed in the cavity that power shaft 16, output shaft 19, internal tooth casing 17 threes surround, and an end of planetary reduction gear 18 is connected with power shaft 16, and the other end is connected with output shaft 19, to complete the milling task and must guarantee enough moments of torsion in milling work, the output that reaches low moment of torsion due to the high rotating speed of hydraulic motor 3 can't reach the milling job requirement, milling tool provided by the present invention makes hydraulic motor 3 power outputs reduce rotating speed to increase driving torque through realizing after reducing gear 5, be delivered to the power shaft 16 of reducing gear 5 when rotating speed and driving torque, the driving tooth of planetary reduction gear 18 and four planetary gear interlock rotations, export through after double reduction, reaching slows down increases the purpose of driving torque, then rotating speed and driving torque act on the junk top of fish by outlet terminal 6, the pressure of the drill power that coordinates the pressure of the drill device to provide is completed milling work, changing reducing gear 5, to have efficient high, the simple characteristics of result, its gearratio is 1:7.11,
Described hydraulic motor 3 is placed in the hydraulic cylinder 9 of drilling pressure control apparatus 2, piston 10 is placed in hydraulic motor 3 upper surfaces, hydraulic cylinder 9 upper ends of drilling pressure control apparatus 2 are socketed on outside hydraulic anchoring device 1 lower end, hydraulic cylinder 9 lower ends of drilling pressure control apparatus 2 are socketed on outside the upper end of power drive system 4, internal tooth casing 17 upper ends of reducing gear 5 are socketed on outside power drive system 4 lower ends, and outlet terminal 6 upper ends are socketed on outside reducing gear 5 lower ends.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described hydraulic anchoring device 1 comprises anchor body 7, anchor fluke 8, wherein, anchor fluke 8 is placed in the cavity of anchor body 7 sides settings; Described hydraulic anchoring device 1 is used for solving the problem of down-hole countertorque, cementing truck is suppressed hydraulic anchoring device 1 by drilling rod or beam hanger, make the anchor fluke 8 of hydraulic anchoring device 1 stretch out anchor body 7, be supported on sleeve pipe, with the inwall interlock of sleeve pipe, the countertorque that produces when preventing that the milling tool outer wall from working because of milling tool like this rotates.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described hydraulic motor 3 comprises stator 11, rotor 12, power output shaft 13, wherein, stator 11 is socketed on outside rotor 12, and the lower end is connected with the upper end of sliding key sleeve 14, and the lower end of rotor 12 is connected with the upper end of power output shaft 13, the lower end of power output shaft 13 is connected with the upper end of power rotation axis 15, and sliding key sleeve 14 is socketed on outside power output shaft 13; Described hydraulic motor 3 is for milling tool provides power, and during work, when liquid enters hydraulic motor 3, hydraulic coupling is impelled rotor 12 rotations, and hydraulic motor 3 changes liquid potential energy into the rotation function of rotor 12, and with rotating speed and driving torque output.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described power drive system 4 comprises sliding key sleeve 14, power rotation axis 15, wherein, sliding key sleeve 14 is socketed on outside power rotation axis 15, the lower end of power rotation axis 15 is connected with the upper end of the power shaft 16 of reducing gear 5, and the lower end of sliding key sleeve 14 is socketed on outside power shaft 16, and is placed in the cavity of power shaft 16 and internal tooth casing 17 formations; During work, the hydraulic thrust of drilling pressure control apparatus 2 and the outputting power of hydraulic motor 3 are passed to reducing gear 5.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described planetary reduction gear 18 comprises driving tooth, four planetary gears, wherein, four planetary gears are meshed with driving tooth respectively.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described outlet terminal 6 comprises banjo fixing butt jointing 20, out splice going splice 21, wherein, banjo fixing butt jointing 20 is socketed on outside out splice going splice 21.
The using method of the described milling tool for oil well, well of the present embodiment, wherein, described using method comprises the following steps,
(1), with special-purpose jack rabbit drifting to the junk top of fish under oil well, Water Well maybe need to repair the cover position;
(2), be connected with hydraulic anchoring device 1 with drilling rod or oil pipe one end, then will be lowered to for the milling tool of oil well, well junk top of fish under oil well, Water Well by the ground workover rig and maybe need to repair the cover position;
(3), before the milling tool that is used for oil well, well maybe needs to repair the position down to the junk top of fish under oil well, Water Well, measure and be used for oil well, the milling tool of well and the suspending weight of drilling rod or oil pipe, and record, under action of gravitation, the milling tool that is used for oil well, well is compressed to the shortest route state, records the degree of depth of drilling rod or beam hanger; The data of the degree of depth of measuring, as step 4 comparable data, milling tool this depth data in milling work can change with working condition, by understanding instrument in down-hole milling progress and milling situation with the Data Comparison of record.
(4), upper drawings is in milling tool and drilling rod or the beam hanger of oil well, well, until the suspending weight that is used for the milling tool of oil well, well and drilling rod or oil pipe is less than 0.4～0.6 ton of the measured suspending weight of step (3);
(5), with pump truck by drilling rod or beam hanger to being used for oil well, the milling tool of well is suppressed, under the effect of pressure differential, anchor fluke 8 in hydraulic anchoring device 1 stretches out on the inwall that is supported on sleeve pipe, inwall interlock with sleeve pipe, realize being used for oil well, vertical grappling of the milling tool of well and sleeve pipe, when pressure reaches the rated operating pressure 3.5MPa of hydraulic motor 3, hydraulic motor 3 is started working, hydraulic motor 3 output torque 900N/m, rotating speed 140r/min, the output torque of hydraulic motor 3 and rotating speed rotate by the power rotation axis 15 of power drive system 4, it is the reducing gear 5 of 1:7.11 through speed reducing ratio, reduce rotating speed and increase moment of torsion, the driving torque of output 6399N/m, meanwhile, the rated operating pressure 3.5MPa that reaches with hydraulic motor 3 of drilling pressure control apparatus 2 produces the hydraulic thrust of 17000N, at last with the hydraulic thrust of 17000N and the out splice going splice 21 of the driving torque after increasing by outlet terminal 6 act on the junk top of fish under oil well, Water Well or repair the cover position, carry out milling work,
(6), after the milling tool that is used for oil well, well is completed the one action stroke, pump truck termination of pumping pressure release, repeating step (4), (5) are until milling work is completed;
(7), complete milling work after, continue with one week of water flushing, milling tool recurs out.
The using method of the milling tool for oil well, well of the present invention, wherein, described hydraulic motor 3 rated operating pressures are 3.5MPa, output torque 900N/m, rotating speed 140r/min, corresponding drilling pressure control apparatus 2 produces the hydraulic thrust of 17000N, and reducing gear 5 speed reducing ratio are 1:7.11, turn the increase moment of torsion by reducing speed, the driving torque of output 6399N/m.
Embodiment 4
The described milling tool for oil well, well of the present embodiment as shown in Figure 1, comprises hydraulic anchoring device 1, drilling pressure control apparatus 2, hydraulic motor 3, power drive system 4, reducing gear 5, outlet terminal 6;
Described drilling pressure control apparatus 2 comprises hydraulic cylinder 9, piston 10, and as shown in Figure 1, piston 10 is placed in hydraulic cylinder 9; Described drilling pressure control apparatus 2 is mainly used in the control of milling the pressure of the drill, when carrying out milling work, by the working fluid pressure that input is set act on hydraulic cylinder 9 and piston 10 on effective pressure area, be hydraulic thrust with hydraulic potential energy converting and energy, by controlling hydraulic thrust size control work the pressure of the drill; According to the difference of different oil wells to the pressure of the drill requirement, the cylinder pressure of annex solution as required 9 that can be autonomous, initial the pressure of the drill power of milling tool is 0.8 ton, if the working fluid pressure of input is 3.5MPa, after increasing one-level hydraulic cylinder 9, hydraulic thrust is brought up to 17000N, the pressure of the drill power is brought up to 1.7 tons, after increasing two-stage hydraulic cylinder 9, hydraulic thrust is brought up to 24740N, and the pressure of the drill power is brought up to 2.4 tons;
described reducing gear 5 comprises power shaft 16, internal tooth casing 17, planetary reduction gear 18, output shaft 19, as shown in Figure 1, the lower end of power shaft 16 is connected with the upper end of output shaft 19, internal tooth casing 17 be socketed on power shaft 16 and output shaft 19 outside, planetary reduction gear 18 is placed in the cavity that power shaft 16, output shaft 19, internal tooth casing 17 threes surround, and an end of planetary reduction gear 18 is connected with power shaft 16, and the other end is connected with output shaft 19, to complete the milling task and must guarantee enough moments of torsion in milling work, the output that reaches low moment of torsion due to the high rotating speed of hydraulic motor 3 can't reach the milling job requirement, milling tool provided by the present invention makes hydraulic motor 3 power outputs reduce rotating speed to increase driving torque through realizing after reducing gear 5, be delivered to the power shaft 16 of reducing gear 5 when rotating speed and driving torque, the driving tooth of planetary reduction gear 18 and four planetary gear interlock rotations, export through after double reduction, reaching slows down increases the purpose of driving torque, then rotating speed and driving torque act on the junk top of fish by outlet terminal 6, the pressure of the drill power that coordinates the pressure of the drill device to provide is completed milling work, changing reducing gear 5, to have efficient high, the simple characteristics of result, its gearratio is 1:7.11,
Described hydraulic motor 3 is placed in the hydraulic cylinder 9 of drilling pressure control apparatus 2, piston 10 is placed in hydraulic motor 3 upper surfaces, hydraulic cylinder 9 upper ends of drilling pressure control apparatus 2 are socketed on outside hydraulic anchoring device 1 lower end, hydraulic cylinder 9 lower ends of drilling pressure control apparatus 2 are socketed on outside the upper end of power drive system 4, internal tooth casing 17 upper ends of reducing gear 5 are socketed on outside power drive system 4 lower ends, and outlet terminal 6 upper ends are socketed on outside reducing gear 5 lower ends.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described hydraulic anchoring device 1 comprises anchor body 7, anchor fluke 8, wherein, anchor fluke 8 is placed in the cavity of anchor body 7 sides settings; Described hydraulic anchoring device 1 is used for solving the problem of down-hole countertorque, cementing truck is suppressed hydraulic anchoring device 1 by drilling rod or beam hanger, make the anchor fluke 8 of hydraulic anchoring device 1 stretch out anchor body 7, be supported on sleeve pipe, with the inwall interlock of sleeve pipe, the countertorque that produces when preventing that the milling tool outer wall from working because of milling tool like this rotates.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described hydraulic motor 3 comprises stator 11, rotor 12, power output shaft 13, wherein, stator 11 is socketed on outside rotor 12, and the lower end is connected with the upper end of sliding key sleeve 14, and the lower end of rotor 12 is connected with the upper end of power output shaft 13, the lower end of power output shaft 13 is connected with the upper end of power rotation axis 15, and sliding key sleeve 14 is socketed on outside power output shaft 13; Described hydraulic motor 3 is for milling tool provides power, and during work, when liquid enters hydraulic motor 3, hydraulic coupling is impelled rotor 12 rotations, and hydraulic motor 3 changes liquid potential energy into the rotation function of rotor 12, and with rotating speed and driving torque output.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described power drive system 4 comprises sliding key sleeve 14, power rotation axis 15, wherein, sliding key sleeve 14 is socketed on outside power rotation axis 15, the lower end of power rotation axis 15 is connected with the upper end of the power shaft 16 of reducing gear 5, and the lower end of sliding key sleeve 14 is socketed on outside power shaft 16, and is placed in the cavity of power shaft 16 and internal tooth casing 17 formations; During work, the hydraulic thrust of drilling pressure control apparatus 2 and the outputting power of hydraulic motor 3 are passed to reducing gear 5.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described planetary reduction gear 18 comprises driving tooth, four planetary gears, wherein, four planetary gears are meshed with driving tooth respectively.
The described milling tool for oil well, well of the present embodiment, as shown in Figure 1, described outlet terminal 6 comprises banjo fixing butt jointing 20, out splice going splice 21, wherein, banjo fixing butt jointing 20 is socketed on outside out splice going splice 21.
Embodiment 5
The described milling tool for oil well, well of the present embodiment as shown in Figure 1, comprises hydraulic anchoring device 1, drilling pressure control apparatus 2, hydraulic motor 3, power drive system 4, reducing gear 5, outlet terminal 6;
Described drilling pressure control apparatus 2 comprises hydraulic cylinder 9, piston 10, and as shown in Figure 1, piston 10 is placed in hydraulic cylinder 9; Described drilling pressure control apparatus 2 is mainly used in the control of milling the pressure of the drill, when carrying out milling work, by the working fluid pressure that input is set act on hydraulic cylinder 9 and piston 10 on effective pressure area, be hydraulic thrust with hydraulic potential energy converting and energy, by controlling hydraulic thrust size control work the pressure of the drill; According to the difference of different oil wells to the pressure of the drill requirement, the cylinder pressure of annex solution as required 9 that can be autonomous, initial the pressure of the drill power of milling tool is 0.8 ton, if the working fluid pressure of input is 3.5MPa, after increasing one-level hydraulic cylinder 9, hydraulic thrust is brought up to 17000N, the pressure of the drill power is brought up to 1.7 tons, after increasing two-stage hydraulic cylinder 9, hydraulic thrust is brought up to 24740N, and the pressure of the drill power is brought up to 2.4 tons;
described reducing gear 5 comprises power shaft 16, internal tooth casing 17, planetary reduction gear 18, output shaft 19, as shown in Figure 1, the lower end of power shaft 16 is connected with the upper end of output shaft 19, internal tooth casing 17 be socketed on power shaft 16 and output shaft 19 outside, planetary reduction gear 18 is placed in the cavity that power shaft 16, output shaft 19, internal tooth casing 17 threes surround, and an end of planetary reduction gear 18 is connected with power shaft 16, and the other end is connected with output shaft 19, to complete the milling task and must guarantee enough moments of torsion in milling work, the output that reaches low moment of torsion due to the high rotating speed of hydraulic motor 3 can't reach the milling job requirement, milling tool provided by the present invention makes hydraulic motor 3 power outputs reduce rotating speed to increase driving torque through realizing after reducing gear 5, be delivered to the power shaft 16 of reducing gear 5 when rotating speed and driving torque, the driving tooth of planetary reduction gear 18 and four planetary gear interlock rotations, export through after double reduction, reaching slows down increases the purpose of driving torque, then rotating speed and driving torque act on the junk top of fish by outlet terminal 6, the pressure of the drill power that coordinates the pressure of the drill device to provide is completed milling work, changing reducing gear 5, to have efficient high, the simple characteristics of result, its gearratio is 1:7.11,
Described hydraulic motor 3 is placed in the hydraulic cylinder 9 of drilling pressure control apparatus 2, piston 10 is placed in hydraulic motor 3 upper surfaces, hydraulic cylinder 9 upper ends of drilling pressure control apparatus 2 are socketed on outside hydraulic anchoring device 1 lower end, hydraulic cylinder 9 lower ends of drilling pressure control apparatus 2 are socketed on outside the upper end of power drive system 4, internal tooth casing 17 upper ends of reducing gear 5 are socketed on outside power drive system 4 lower ends, and outlet terminal 6 upper ends are socketed on outside reducing gear 5 lower ends.
Claims (9)
1. milling tool that is used for oil well, well is characterized in that:
Described milling tool for oil well, well comprises hydraulic anchoring device (1), drilling pressure control apparatus (2), hydraulic motor (3), power drive system (4), reducing gear (5), outlet terminal (6);
Described drilling pressure control apparatus (2) comprises hydraulic cylinder (9), piston (10), and wherein, piston (10) is placed in hydraulic cylinder (9);
Described reducing gear (5) comprises power shaft (16), internal tooth casing (17), planetary reduction gear (18), output shaft (19), wherein, the lower end of power shaft (16) is connected with the upper end of output shaft (19), internal tooth casing (17) be socketed on power shaft (16) and output shaft (19) outside, planetary reduction gear (18) is placed in the cavity that power shaft (16), output shaft (19), internal tooth casing (17) three surround, and an end of planetary reduction gear (18) is connected with power shaft (16), and the other end is connected with output shaft (19);
Described hydraulic motor (3) is placed in the hydraulic cylinder (9) of drilling pressure control apparatus (2), piston (10) is placed in hydraulic motor (3) upper surface, hydraulic cylinder (9) upper end of drilling pressure control apparatus (2) is socketed on outside hydraulic anchoring device (1) lower end, hydraulic cylinder (9) lower end of drilling pressure control apparatus (2) is socketed on outside the upper end of power drive system (4), internal tooth casing (17) upper end of reducing gear (5) is socketed on outside power drive system (4) lower end, and outlet terminal (6) upper end is socketed on outside reducing gear (5) lower end.
2. according to the described milling tool for oil well, well of claim 1, it is characterized in that: described hydraulic anchoring device (1) comprises anchor body (7), anchor fluke (8), and wherein, anchor fluke (8) is placed in the cavity of anchor body (7) side setting.
3. according to the milling tool for oil well, well claimed in claim 1, it is characterized in that: described power drive system (4) comprises sliding key sleeve (14), power rotation axis (15), wherein, sliding key sleeve (14) is socketed on outside power rotation axis (15), the lower end of power rotation axis (15) is connected with the upper end of the power shaft (16) of reducing gear (5), the lower end of sliding key sleeve (14) is socketed on outside power shaft (16), and is placed in the cavity of power shaft (16) and internal tooth casing (17) formation.
4. according to the milling tool for oil well, well claimed in claim 1, it is characterized in that: described hydraulic motor (3) comprises stator (11), rotor (12), power output shaft (13), wherein, stator (11) is socketed on outside rotor (12), and the lower end is connected with the upper end of sliding key sleeve (14), and the lower end of rotor (12) is connected with the upper end of power output shaft (13).
5. according to the milling tool for oil well, well claimed in claim 1, it is characterized in that: described planetary reduction gear (18) comprises driving tooth, four planetary gears, and wherein, four planetary gears are meshed with driving tooth respectively.
6. according to the milling tool for oil well, well claimed in claim 1, it is characterized in that: described outlet terminal (6) comprises banjo fixing butt jointing (20), out splice going splice (21), and wherein, banjo fixing butt jointing (20) is socketed on outside out splice going splice (21).
7. according to the using method of the described milling tool for oil well, well of claim 1～6 any one, it is characterized in that: described using method comprises the following steps,
(1), with special-purpose jack rabbit drifting to the junk top of fish under oil well, Water Well maybe need to repair the cover position;
(2), be connected with hydraulic anchoring device (1) with drilling rod or oil pipe one end, then will be lowered to for the milling tool of oil well, well junk top of fish under oil well, Water Well by the ground workover rig and maybe need to repair the cover position;
(3), before the milling tool that is used for oil well, well maybe needs to repair the position down to the junk top of fish under oil well, Water Well, measure and be used for oil well, the milling tool of well and the suspending weight of drilling rod or oil pipe, and record, under action of gravitation, the milling tool that is used for oil well, well is compressed to the shortest route state, records the degree of depth of drilling rod or beam hanger;
(4), upper drawings is in milling tool and drilling rod or the beam hanger of oil well, well, until the suspending weight that is used for the milling tool of oil well, well and drilling rod or oil pipe is less than 0.4～0.6 ton of the measured suspending weight of step (3);
(5), with pump truck by drilling rod or beam hanger to being used for oil well, the milling tool of well is suppressed, under the effect of pressure differential, anchor fluke (8) in hydraulic anchoring device (1) stretches out on the inwall that is supported on sleeve pipe, inwall interlock with sleeve pipe, realize being used for oil well, vertical grappling of the milling tool of well and sleeve pipe, when pressure reaches the rated operating pressure 3～4MPa of hydraulic motor (3), hydraulic motor (3) is started working, the power rotation axis (15) that hydraulic motor (3) drives power drive system (4) rotates, the driving torque that the rotating speed of power rotation axis (15) reduces rotating speed and increases hydraulic motor (3) through reducing gear (5) is to provide enough large driving torque, meanwhile, rated operating pressure 3～4MPa of reaching with hydraulic motor (3) of drilling pressure control apparatus (2) (2) produces the hydraulic thrust of 8000～24740N, at last with the hydraulic thrust of 8000～24740N and the out splice going splice (21) of the driving torque after increasing by outlet terminal (6) act on the junk top of fish under oil well, Water Well or repair and overlap the position, carry out milling work,
(6), after the milling tool that is used for oil well, well is completed the one action stroke, pump truck termination of pumping pressure release, repeating step (4), (5) are until milling work is completed;
(7), complete milling work after, continue with one week of water flushing, milling tool recurs out.
8. according to the using method of the milling tool for oil well, well claimed in claim 7, it is characterized in that: the rated operating pressure of described hydraulic motor (3) is 3～4MPa, output torque 900N/m, rotating speed 110～170r/min.
9. according to the using method of the described milling tool for oil well, well of claim 7 or 8, it is characterized in that: described reducing gear (5) speed reducing ratio is 1:7.11, turns the increase moment of torsion by reducing speed, the driving torque of output 6399N/m.
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| CN105003220A (en) * | 2015-06-23 | 2015-10-28 | 中国石油集团渤海钻探工程有限公司 | Continuous oil pipe horizontal well drilling grinding and pumping type composite bridge plug process |
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| CN108266149A (en) * | 2016-12-30 | 2018-07-10 | 中国石油天然气股份有限公司 | The workover process driven using well workover top |
| CN108868675A (en) * | 2018-06-05 | 2018-11-23 | 杰瑞能源服务有限公司 | Bridge plug is hydraulic to surge setting tool and bridge plug sets method |
| CN110608007A (en) * | 2019-10-31 | 2019-12-24 | 西安石油大学 | Rotary propelling type hydraulic ball sleeve shaper |
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| CN108868675B (en) * | 2018-06-05 | 2024-03-19 | 杰瑞能源服务有限公司 | Bridge plug hydraulic setting tool and bridge plug setting method |
| CN110608007A (en) * | 2019-10-31 | 2019-12-24 | 西安石油大学 | Rotary propelling type hydraulic ball sleeve shaper |
| CN110608007B (en) * | 2019-10-31 | 2023-06-20 | 西安石油大学 | Rotary push type hydraulic ball sleeve shaper |
| CN111236840A (en) * | 2020-03-06 | 2020-06-05 | 西华大学 | Anchoring tool for slope guiding device |
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Inventor after: Liu Jianyong Inventor after: Xi Naimao Inventor after: Wang Jie Inventor after: Jin Hongdao Inventor after: Wang Jian Inventor after: Su Yuqi Inventor before: Liu Jianyong Inventor before: Su Yuqi Inventor before: Ji Jianhua Inventor before: Zhang Qing Inventor before: Liu Jihai Inventor before: Yang Wenxue Inventor before: Li Fazhi Inventor before: Xi Naimao Inventor before: Wang Jianuan Inventor before: Shen Jun Inventor before: Sun Guhua Inventor before: Yan Pengao Inventor before: Wang Jie Inventor before: Jin Hongdao Inventor before: Wang Jian |