CN102518407B - Cable type underground axial force generating device - Google Patents
Cable type underground axial force generating device Download PDFInfo
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- CN102518407B CN102518407B CN201210001428.9A CN201210001428A CN102518407B CN 102518407 B CN102518407 B CN 102518407B CN 201210001428 A CN201210001428 A CN 201210001428A CN 102518407 B CN102518407 B CN 102518407B
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Abstract
The invention discloses a cable type underground axial force generating device. The device comprises a cable connector, a circuit control part, a pressure compensator, an electric motor, a casing pipe anchoring device, a force generating device and the like, which are sequentially connected. The device is characterized in that: the parts are in threaded connection; the cable connector is connected with a cable or a cable type retractor; and the right end of the force generating device is connected with other underground tools. The cable is connected with a ground control system ,and the cable is used for supplying power and transmitting control signals; the pressure compensator is used for keeping the balance between pressure in the device and pressure outside the device; the electric motor provides power; and the circuit control part is used for controlling the working process of the device. Through control, pump liquid circularly flows between two pump liquid chambers of the force generating device, and under the action of hydraulic pressure, a piston rod moves leftwards or rightwards, so an axial pull force or push force is provided to the underground tools. The cable type underground axial force generating device is simple in structure, convenient to operate, and safe and reliable in operation, and can effectively generate the axial force and can be used for setting and unsetting a packer, and inverse buckling, uplifting, de-buckling and the like during refloatation.
Description
Technical field
The exceptional well lower device that the present invention relates to bore for oil, natural gas and geology completion and well workover, especially relates to a kind of for the brill completion of deep-sea horizontal well, extended reach well, directional well and straight well and the underground axial force generating means of well-repairing work.
Background technology
In boring the process of completion and well workover, conventionally can be to downhole tool as packer, hanger, gas lift valve, fishing tool etc. are installed, reclaimed, mobile and location.Often use at present trepan, workover rig, coild tubing unit etc. as the corollary equipment of underground work, and the day rents such as trepan, workover rig, coild tubing unit are high, and institute takes up space greatly, and this increases job costs greatly; In addition, when the horizontal segment of horizontal well, extended reach well is long, due to the impact of drilling pipe bending or flexing, axial load cannot effectively be transmitted, and often causes operation failure.For this reason, at present broken but need that development and application is a kind of need to be by drilling well, workover rig or coild tubing unit, and that institute takes up space is little, simple to operate, be convenient to mobile and transportation, can complete smoothly the device to the installation of downhole tool, recovery, movement and location in horizontal well, extended reach well.
Summary of the invention
The object of the invention is: solve the deficiencies in the prior art, in order to overcome axial force in the underground work that horizontal well and extended reach well frictional resistance cause, apply difficulty, in order to save the hiring cost of trepan, workover rig or coild tubing unit, spy provides a kind of cable type underground axial force generating device.
In order to achieve the above object, the technical scheme that head it off of the present invention adopts is: a kind of cable type underground axial force generating device, comprise the cable connector connecting successively, circuit control section, pressure compensator, electric notor, sleeve pipe anchoring device, the parts such as force generating device, it is characterized in that: between all parts for being threaded, cable connector comprises fishing bell, seal rubber sleeve, cable holder, cable inner pressure ring, cable locking cover, locking sleeve, connect housing, cable seal docking assembly etc., fishing bell is ladder barrel shape, cable holder, seal rubber sleeve, cable locking cover, locking sleeve is arranged in fishing bell successively, cable seal docking assembly is contained in and connects in housing, connecting housing two ends all has screw thread and anti-rotation cushion rubber is installed, its one end is connected on fishing bell, other end connecting circuit control section, cable inner pressure ring is arranged on cable locking and puts, pressure compensator is by left valve pocket, right valve pocket, filter, counterbalance spring, compensating piston, the compositions such as polished rod, left valve pocket and right valve pocket connect and compose compensated cavity, left valve pocket external surface is circumferentially provided with filter, compensation channels is communicated with left compensated cavity with filter, compensating piston and counterbalance spring are installed on polished rod, and be fixed in compensated cavity, compensating piston is divided into left compensated cavity and right compensated cavity by compensated cavity, counterbalance spring is locked between compensating piston and left valve pocket, between polished rod and compensating piston, between right valve pocket and compensating piston and between left valve pocket and right valve pocket, seal, pressure compensator right-hand member connects electric notor.The present invention provides power by electric notor; With cable, be connected with ground control system, for power supply and transmission signal; Circuit control section carrys out the action of control device for the signal sending according to ground control system.
Sleeve pipe anchoring device is comprised of anchor body, anchor log, stretching device, back pressure spring, oil pocket piston, pressure-control valve etc., and anchor body is monolithic, and all there is screw thread at two ends, and box thread end II connects electric notor, and male thread end I connects force generating device; Anchor body has two groups of symmetrical elliptical cylinder-shape radial holes, the radial hole of every group four is used for installing anchor log, all radial holes are all perpendicular to the central axis of anchor body, middle one group with other one group radially mutual vertical, the perforate opposite direction of the perforate direction of two ends radial hole and middle two radial holes in four radial holes of same group, fluid hole is communicated with fluid passage with radial hole; The first back pressure spring and oil pocket piston are installed in shoe cream room, between anchor log and anchor body and between oil pocket piston and anchor body, seal; Stretching device is comprised of fixed bar, baffle plate, the second back pressure spring and supports end cap, and one end of fixed bar is fixed on anchor body, and the other end connects baffle plate; The second back pressure spring fitting is at anchor log inner chamber, and is locked between baffle plate and supports end cap; Anchor log is Elliptic Cylinder shape, and length is 2/3rds of anchor body diameter, and its upper end is sphere, and lower end is the cylindrical cavity that has opening; On oil pocket piston, pressure-control valve being installed, is straight ejector half overflow valve, and it plays the effect of protective device.
Force generating device is comprised of piston shell, piston-rod assembly, end cap, crossover sub, piston pump etc., and piston shell is drum, comprises inner and outer tubes, and all there is screw thread at outer tube two ends, and male thread end IV connects end cap, box thread end III splicing sleeve anchoring device; Inner tube outer surface is uniformly distributed axial groove, forms pump liquid passage with outer tube wall, and pump liquid passage is communicated with left pump sap cavity and piston pump piston pump respectively with right pump sap cavity; Piston-rod assembly is comprised of piston rod, piston and the axle collar, and it is arranged in inner tube, and two axle collars are equally distributed on piston two ends and are arranged on piston rod, with piston rod relative sliding; Piston rod right-hand member is threaded with crossover sub, radially with holding screw, fixes; Piston rod, piston and the axle collar divide inner tube to circularize left pump sap cavity and right pump sap cavity, between piston and inner tube, between the axle collar and piston rod and seal between end cap and piston rod; Between the axle collar and inner tube, be interference fit, radially with straight pin, connect; The quantity that is communicated with the pump liquid passage of piston pump and left pump sap cavity equates with the quantity that is communicated with the pump liquid passage of piston pump and right pump sap cavity.One way valve, piston assembly, cam mechanism etc. are installed in piston pump, and M, N hydraulic fluid port are communicated with right pump sap cavity, left pump sap cavity respectively.
The invention has the beneficial effects as follows: long service life, simple in structure, security performance is high, volume is little, is convenient to mobile and transportation, can complete underground work with greater efficiency; The confined space that can save hiring cost and the offshore drilling platform of drilling well or workover rig, has good economic benefit; Conventionally be connected use with cable type crawl device; straight well section is down moved by self gravitation; during by lower curved section and horizontal segment, by crawl device, provide motive force to deliver to precalculated position; this process is used cable device transmission to be gone into the well and need to be by coiled tubing; operating efficiency is high, is of value to safety and environmental protection.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of cable type underground axial force generating device of the present invention;
Fig. 2 is the schematic diagram of the sleeve pipe anchoring device of a kind of cable type underground axial force generating device of the present invention
Fig. 3 is the structural representation of the sleeve pipe anchoring device of a kind of cable type underground axial force generating device of the present invention;
Fig. 4 is the structural representation of the stretching device 16 of a kind of cable type underground axial force generating device of the present invention;
Fig. 5 is the structural representation of the pressure-control valve 7 of a kind of cable type underground axial force generating device of the present invention;
Fig. 6 is the structural representation of the force generating device of a kind of cable type underground axial force generating device of the present invention;
Fig. 7 is the A-A sectional view of the force generating device of a kind of cable type underground axial force generating device of the present invention;
Fig. 8 is the structural representation of the piston pump 24 of a kind of cable type underground axial force generating device of the present invention;
Fig. 9 is the structural representation of the cable connector of a kind of cable type underground axial force generating device of the present invention;
Figure 10 is the structural representation of the pressure compensator of a kind of cable type underground axial force generating device of the present invention;
Figure 11 is the structural representation of the electric notor of a kind of cable type underground axial force generating device of the present invention;
Figure 12 is the structural representation of the circuit control section of a kind of cable type underground axial force generating device of the present invention.
In figure, 1 anchor log, 2 fluid passages, 3 radial holes, 4 baffle plates, 5 shoe cream rooms, 6 oil pocket pistons, 7 pressure-control valves, 8 first back pressure springs, 9 anchor bodies, 10 fixed bars, 11 sealing rings, 12 second back pressure springs, 13 fluid holes, 14 anchor log inner chambers, 15 anchor body central axiss, 16 stretching devices, 17 screws, 18 supports end cap, 19 spools, 20 pressure springs, 21 regulating hand wheel of pressures, 22 pressure port, 23 oil spilling mouths, 24 piston pumps, 25 pump liquid passages, 26 left through holes, 27 left pump sap cavities, 28 inner tubes, 29 straight pins, 30 crossover subs, 31 holding screws, 32 end caps, 33 right through holes, 34 right pump sap cavities, 35 pistons, 36 axle collars, 37 piston rods, 39 outer tubes, 39 axial grooves, 40 first pump housing passages, 41 one way valves, 42 second pump housing passages, 43 pump housings, 44 first cam mechanisms, 45 second cam mechanisms, 46 first pumping cylinder piston assemblies, 47 first pumping cylinders, 48 second pumping cylinder piston assemblies, 49 second pumping cylinders, 50 cables, 51 seal rubber sleeves, 52 cable inner pressure rings, 53 locking sleeves, 54 cable seal docking assemblies, 55 cable holders, 56 cable locking covers, 57 fishing bells, 58 anti-rotation cushion rubbers, 59 connect housing, 60 left valve pockets, 61 compensation channels, 62 left compensated cavities, 63 polished rods, 64 right valve pockets, 65 filters, 66 counterbalance springs, 67 compensating pistons, 68 right compensated cavities, 69 compensate openings, M, N hydraulic fluid port.
The specific embodiment
By Fig. 1, Fig. 9, Figure 10, shown in Figure 11 and Figure 12, a kind of cable type underground axial force generating device, comprise the cable connector connecting successively, circuit control section, pressure compensator, electric notor, sleeve pipe anchoring device, the parts such as force generating device, it is characterized in that: between all parts for being threaded, cable connector comprises fishing bell 57, seal rubber sleeve 51, cable holder 55, cable inner pressure ring (52), cable locking cover 56, locking sleeve 53, connect housing 59, cable seal docking assembly 54 etc., fishing bell 57 is ladder barrel shape, cable holder 55, seal rubber sleeve 51, cable locking cover 56, locking sleeve 53 is arranged in fishing bell 57 successively, cable seal docking assembly 54 is contained in and connects in housing 59, connecting housing 59 two ends all has screw thread and anti-rotation cushion rubber 58 is installed, its one end is connected on fishing bell 57, other end connecting circuit control section, cable inner pressure ring 52 is arranged on cable locking cover 56, pressure compensator is by left valve pocket 60, right valve pocket 64, filter 65, counterbalance spring 66, compensating piston 67, polished rod 63 compositions such as grade, left valve pocket 60 connects and composes compensated cavity with right valve pocket 64, left valve pocket 60 external surfaces are circumferentially provided with filter 65, compensation channels 61 is communicated with left compensated cavity 62 with filter 65, compensating piston 67 and counterbalance spring 66 are installed on polished rod 63, and be fixed in compensated cavity, compensating piston 67 is divided into left compensated cavity 62 and right compensated cavity 68 by compensated cavity, counterbalance spring 66) be locked between compensating piston 67 and left valve pocket 60, between polished rod 63 and compensating piston 67, between right valve pocket 64 and compensating piston 67 and between left valve pocket 60 and right valve pocket 64, seal, pressure compensator right-hand member connects electric notor.The present invention provides power by electric notor, is connected, for power supply and transmission signal with cable with ground control system.Circuit control section carrys out the action of control device for the signal sending by ground control system.
Shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, sleeve pipe anchoring device is comprised of anchor body, anchor log, stretching device, back pressure spring, oil pocket piston, pressure-control valve etc., and anchor body 9 is monolithic, and all there is screw thread at two ends, box thread end II connects electric notor, and male thread end I connects force generating device; Anchor body 9 has two groups of symmetrical elliptical cylinder-shape radial holes 3, the radial hole 3 of every group four is for installing anchor log 1, all radial holes 3 are all perpendicular to anchor body central axis 15, middle one group with other one group radially mutually vertical, the perforate opposite direction of two radial holes 3 of the perforate direction of two ends radial hole 3 and centre in four radial holes of same group; Fluid hole 13 is communicated with fluid passage 2 with radial hole 3, the first back pressure spring 8 and oil pocket piston 6 are installed in shoe cream room 5, between anchor log 1 and anchor body (9) and between oil pocket piston 6 and anchor body 9, seals; Stretching device 16 is comprised of fixed bar 10, baffle plate 4, the second back pressure spring 12 and supports end cap 18, and one end of fixed bar 10 is fixed on anchor body 9, and the other end connects baffle plate 4; The second back pressure spring 12 is arranged on anchor log inner chamber 14, and is locked between baffle plate 4 and supports end cap 18; Anchor log 1 is Elliptic Cylinder shape, and length is 2/3rds of anchor body diameter, and its upper end is sphere, and lower end is the cylindrical cavity 14 that has opening; Pressure-control valve 7 is installed on oil pocket piston 6, is straight ejector half overflow valve.
By force generating device shown in Fig. 6, Fig. 7 and Fig. 8, by piston shell, piston-rod assembly, end cap, crossover sub, piston pump etc., formed, piston shell is drum, comprise inner tube 28 and outer tube 38, all there is screw thread at outer tube 38 two ends, male thread end IV connects end cap 32, box thread end III splicing sleeve anchoring device; Inner tube 28 external surfaces are uniformly distributed axial groove 39, form pump liquid passage 25 with outer tube 38 inwalls, and pump liquid passage 25 is communicated with left pump sap cavity 27 and piston pump 24 piston pump 24 respectively with right pump sap cavity 34; Piston-rod assembly is comprised of piston rod 37, piston 35 and the axle collar 36, and it is arranged in inner tube 28, and two axle collars 36 are equally distributed on piston 35 two ends and are arranged on piston rod 37, with piston rod (37) can relative sliding; Piston rod 37 right-hand member V are threaded with crossover sub 30, radially fixing with holding screw 31; Piston rod 37, piston 35 and the axle collar 36 are divided into left pump sap cavity 27 and right pump sap cavity 34 by inner tube 28, between piston 35 and inner tube 28, between the axle collar 36 and piston rod 37 and sealing between end cap 32 and piston rod 37; Between the axle collar 36 and inner tube 28, be interference fit, radially with straight pin 29, connect; The quantity that is communicated with the pump liquid passage 25 of piston pump 24 and left pump sap cavity 27 equates with the quantity that is communicated with the pump liquid passage 25 of piston pump 24 and right pump sap cavity 34.One way valve, piston assembly, cam mechanism etc. are installed in piston pump, and M, N hydraulic fluid port are communicated with right pump sap cavity, left pump sap cavity respectively.
A kind of operating principle of cable type underground axial force generating device is: when device and fastening means thereof are sent to precalculated position, ground control system by cable to circuit control section transmitted signal, circuit control section starts electric notor by instruction, the oil pocket piston 6 of its drive sleeve anchoring device is at the interior mobile extruding fluid of shoe cream room 5, fluid flows into radial hole 3 through fluid passage 2, under the effect of oil liquid pressure, anchor log 1 stretches out in anchor body 9, be anchored on firmly internal surface of sleeve pipe, therefore the underground tool string of underground axial force generating means and connection thereof is anchored at internal surface of sleeve pipe.
Afterwards ground control system again by cable to circuit control section transmitted signal, circuit control section makes the first cam mechanism 44 work of piston pump 24 in force generating device by instruction, upper and lower piston movement is made in the first pumping cylinder piston assembly 46 thereupon, when it moves downward, liquid in the right pump sap cavity 34 being communicated with the M hydraulic fluid port of piston pump 24 is drawn into the first pumping cylinder 47, and while moving upward, liquid is discharged from via the second pump housing passage 42 and N hydraulic fluid port and flows into left pump sap cavity 27, at this moment between two cavitys, produce pressure reduction, under the pressure-acting of fluid, piston rod 37 to the right through hole 33 directions moves, thereby end thrust is provided to the downhole tool being attached thereto.On the contrary, if ground control system transmits signal to circuit control section and makes the second cam mechanism 45 work, when the second pumping cylinder piston assembly 48 moves downward, liquid in left pump sap cavity 27 is drawn into the second pumping cylinder 49, and it is when move upward, liquid is discharged from via the first pump housing passage 40 and M hydraulic fluid port and flows into right pump sap cavity 34, at this moment piston rod 37 left through hole 26 directions move, to downhole hardware, provide axial tension.The motion of control piston Beng24 cam mechanism, can provide end thrust or pulling force to downhole tool.
When electric notor stops the oil pocket piston 6 extruding fluid of drive sleeve anchoring device, under the second back pressure spring 12 effects, anchor log 1 is regained in anchor body 9, fluid is pushed back shoe cream room 5 again in this course, under the first back pressure spring 8 and oil liquid pressure effect, oil pocket piston 6 is shifted to initial position, thereby finishes the grappling to underground tool string.In the sleeve pipe anchoring device course of work; pressure-control valve 7 plays the effect of safeguard protection; when the pressure of shoe cream room 5 inner fluids surpasses setting value; pressure spring 20 is compressed; spool 19 moves to right; fluid just flows out from oil spilling mouth 23, and makes the oil liquid pressure in cavity 5 equal setting pressure, thereby plays the effect of protective device.
In the process of work, pressure in underground axial force generating means increases and during higher than the fluid pressure of down-hole, effect due to pressure reduction, liquid in device can flow into right compensated cavity 68 through compensate opening 69, and the compensating piston 67 of pressure compensator can be moved to the left, and the space of right compensated cavity 68 increases, pressure decreased in thereupon installing, when being reduced to the fluid pressure value of down-hole, compensating piston 67 stop motions, this timer external and internal pressure reaches equilibrium state.Otherwise when the fluid pressure of down-hole is during higher than pressure in device, the liquid in pit shaft can flow into left compensated cavity 62 through compensation channels 61, compensating piston 67 moves right, and the pressure in device increases until the pressure of compensating piston 67 both sides compensated cavities reaches balance.This pressure compensator, for keeping the inside and outside pressure balance of underground axial force generating means, plays the effect of the whole device of protection.
Claims (2)
1. a cable type underground axial force generating device, comprises the cable connector connecting successively, circuit control section, pressure compensator, electric notor, sleeve pipe anchoring device, force generating device, is characterized in that: between all parts, for being threaded, cable connector comprises fishing bell (57), seal rubber sleeve (51), cable holder (55), cable inner pressure ring (52), cable locking cover (56), locking sleeve (53), connect housing (59), cable seal docking assembly (54), fishing bell (57) is ladder barrel shape, cable holder (55), seal rubber sleeve (51), cable locking cover (56), locking sleeve (53) is arranged in fishing bell (57) successively, cable seal docking assembly (54) is contained in and connects in housing (59), connecting housing (59) two ends all has screw thread and anti-rotation cushion rubber (58) is installed, its one end is connected on fishing bell (57), other end connecting circuit control section, cable inner pressure ring (52) is arranged on cable locking cover (56), pressure compensator comprises left valve pocket (60), right valve pocket (64), filter (65), counterbalance spring (66), compensating piston (67), polished rod (63), left valve pocket (60) connects and composes compensated cavity with right valve pocket (64), left valve pocket (60) external surface is circumferentially provided with filter (65), compensation channels (61) is communicated with left compensated cavity (62) with filter (65), compensating piston (67) and counterbalance spring (66) are installed on polished rod (63), and be fixed in compensated cavity, compensating piston (67) is divided into left compensated cavity (62) and right compensated cavity (68) by compensated cavity, counterbalance spring (66) is locked between compensating piston (67) and left valve pocket (60), between polished rod (63) and compensating piston (67), between right valve pocket (64) and compensating piston (67) and between left valve pocket (60) and right valve pocket (64), seal, pressure compensator right-hand member connects electric notor, described force generating device comprises piston shell, piston-rod assembly, end cap, crossover sub, piston pump, piston shell is drum, comprises inner tube (28) and outer tube (38), and all there is screw thread at outer tube (38) two ends, male thread end IV connects end cap (32), box thread end III splicing sleeve anchoring device, inner tube (28) external surface is uniformly distributed axial groove (39), forms pump liquid passage (25) with outer tube (38) inwall, and pump liquid passage (25) is communicated with left pump sap cavity (27) and piston pump (24) piston pump (24) respectively with right pump sap cavity (34), piston-rod assembly is comprised of piston rod (37), piston (35) and the axle collar (36), it is arranged in inner tube (28), two axle collars (36) are equally distributed on piston (35) two ends and are arranged on piston rod (37) upper, with piston rod (37) can relative sliding, piston rod (37) right-hand member V is threaded with crossover sub (30), radially uses holding screw (31) fixing, piston rod (37), piston (35) and the axle collar (36) are divided into left pump sap cavity (27) and right pump sap cavity (34) by inner tube (28), between piston (35) and inner tube (28), between the axle collar (36) and piston rod (37) and sealing between end cap (32) and piston rod (37), between the axle collar (36) and inner tube (28), be interference fit, radially use straight pin (29) to connect, the quantity that is communicated with the pump liquid passage (25) of piston pump (24) and left pump sap cavity (27) equates with the quantity that is communicated with the pump liquid passage (25) of piston pump (24) and right pump sap cavity (34).
2. cable type underground axial force generating device according to claim 1, it is characterized in that: sleeve pipe anchoring device comprises anchor body, anchor log, stretching device, back pressure spring, oil pocket piston, pressure-control valve, anchor body (9) is monolithic, all there is screw thread at two ends, box thread end II connects electric notor, and male thread end I connects force generating device; Anchor body (9) has two groups of symmetrical elliptical cylinder-shape radial holes (3), the radial hole (3) of every group four is for installing anchor log (1), all radial holes (3) are all perpendicular to anchor body central axis (15), middle one group with other one group radially mutually vertical, the perforate opposite direction of the perforate direction of two ends radial hole (3) and two radial holes in centre (3) in four radial holes of same group; Fluid hole (13) is communicated with fluid passage (2) with radial hole (3), the first back pressure spring (8) and oil pocket piston (6) are installed in shoe cream room (5), between anchor log (1) and anchor body (9) and between oil pocket piston (6) and anchor body (9), seal; Stretching device (16) is comprised of fixed bar (10), baffle plate (4), the second back pressure spring (12) and supports end cap (18), and it is upper that anchor body (9) is fixed in one end of fixed bar (10), and the other end connects baffle plate (4); The second back pressure spring (12) is arranged on anchor log inner chamber (14), and is locked between baffle plate (4) and supports end cap (18); Anchor log (1) is Elliptic Cylinder shape, and length is 2/3rds of anchor body diameter, and its upper end is sphere, and lower end is the cylindrical cavity (14) that has opening; Pressure-control valve (7) is installed on oil pocket piston (6), is straight ejector half overflow valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210001428.9A CN102518407B (en) | 2012-01-05 | 2012-01-05 | Cable type underground axial force generating device |
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|---|---|---|---|
| CN201210001428.9A CN102518407B (en) | 2012-01-05 | 2012-01-05 | Cable type underground axial force generating device |
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| CN102518407A CN102518407A (en) | 2012-06-27 |
| CN102518407B true CN102518407B (en) | 2014-05-07 |
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| CN201210001428.9A Active CN102518407B (en) | 2012-01-05 | 2012-01-05 | Cable type underground axial force generating device |
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| CN103075123B (en) * | 2013-01-23 | 2015-09-16 | 中国石油化工股份有限公司石油工程技术研究院 | A kind of electric liquid drives setting tool |
| CN104533316B (en) * | 2014-12-15 | 2016-08-24 | 中国石油天然气集团公司 | A kind of down-hole step-by-step movement the pressure of the drill loader and control method thereof |
| CN104775780B (en) * | 2015-03-17 | 2017-06-06 | 中国石油天然气股份有限公司 | The formula that is flexible coupling downhole instrument tractor |
| CN107425301B (en) * | 2017-07-22 | 2019-02-22 | 福建南新电缆有限公司 | A kind of spliced cable |
| CN107701147B (en) * | 2017-10-26 | 2023-11-10 | 中国石油大学(北京) | Annulus pressure underground control valve |
| CN107916922B (en) * | 2017-12-25 | 2023-05-02 | 吉林大学 | Underground fish detection method and device based on flexible array type pressure sensor |
| CN108729899B (en) * | 2018-05-09 | 2021-11-23 | 刘刚 | Multifunctional logging bridle |
| CN108678696A (en) * | 2018-06-13 | 2018-10-19 | 北方斯伦贝谢油田技术（西安）有限公司 | A kind of positioning anchor tool |
| CN114291210B (en) * | 2022-01-06 | 2023-06-09 | 西南石油大学 | Automatic submarine anchoring device |
| CN114687689B (en) * | 2022-04-21 | 2023-06-23 | 西南石油大学 | Recyclable bridge plug throwing tool |
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| DE602004001328T2 (en) * | 2004-01-27 | 2007-05-10 | Schlumberger Technology B.V. | Underground drilling of a lateral bore |
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| EP0477452A2 (en) * | 1990-08-30 | 1992-04-01 | Halliburton Company | Downhole force generator |
| CN1399703A (en) * | 1999-11-24 | 2003-02-26 | 国际壳牌研究有限公司 | Device for manipulating tool in well tubular |
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