CN102518407A - Cable type underground axial force generating device - Google Patents
Cable type underground axial force generating device Download PDFInfo
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- CN102518407A CN102518407A CN2012100014289A CN201210001428A CN102518407A CN 102518407 A CN102518407 A CN 102518407A CN 2012100014289 A CN2012100014289 A CN 2012100014289A CN 201210001428 A CN201210001428 A CN 201210001428A CN 102518407 A CN102518407 A CN 102518407A
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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 present invention relates to be used for the exceptional well lower device that oil, natural gas and geology are bored completion and well workover, especially relate to a kind of brill completion of deep-sea horizontal well, extended reach well, directional well and straight well and down-hole axial force generating means of well-repairing work of being used for.
Background technology
In the process of boring completion and well workover, can install, reclaim, move and the location downhole tool such as packer, hanger, gas lift valve, fishing tool etc. usually.The normal at present corollary equipment that uses trepan, workover rig, coild tubing unit etc. as underground work, and day rents such as trepan, workover rig, coild tubing unit are high, and institute takes up space, and this makes job costs increase greatly greatly; In addition, when the horizontal segment of horizontal well, extended reach well was long, because the influence of drilling pipe bending or flexing, axial load can't effectively be transmitted, and often caused the operation failure.For this reason; At present broken but need develop and use a kind of need be by drilling well, workover rig or coild tubing unit; And that institute takes up space is little, simple to operate, be convenient to move and transportation, can accomplish in horizontal well, extended reach well installation, recovery to downhole tool smoothly, move and the device of location.
Summary of the invention
The objective of the invention is: the deficiency that solves prior art; Axial force applies difficulty in the underground work that horizontal well and extended reach well frictional resistance cause in order to overcome; In order to practice thrift the hiring cost of trepan, workover rig or coild tubing unit, the spy provides a kind of cable type down-hole axial force generating means.
In order to achieve the above object; The technical scheme that head it off of the present invention adopted is: a kind of cable type down-hole axial force generating means; Comprise successively parts such as the cable connector that connects, circuit control section, pressure compensator, electric notor, sleeve pipe anchoring device, force generating device; It is characterized in that: for being threaded, cable connector comprises fishing bell, seal rubber sleeve, cable holder, cable inner pressure ring, cable locking cover, locking sleeve, connection housing, cable seal butt joint assembly etc. between each parts, and fishing bell is the ladder barrel shape; Cable holder, seal rubber sleeve, cable locking cover, locking sleeve are installed in the fishing bell successively; Cable seal butt joint assembly is contained in and connects in the housing, and connecting the housing two ends all has screw thread and the anti-rotation cushion rubber is installed, and the one of which end is connected on the fishing bell; Other end connecting circuit control section, the cable inner pressure ring is installed in cable locking and puts; Pressure compensator is made up of left valve pocket, right valve pocket, filter, counterbalance spring, compensating piston, polished rod etc.; Left side valve pocket and right valve pocket connect and compose compensated cavity; Left side valve pocket external surface circumferentially is equipped with filter, and compensation channels is communicated with left compensated cavity with filter, compensating piston and counterbalance spring are installed on the polished rod; And be fixed in the compensated cavity; Compensating piston is divided into left compensated cavity and right compensated cavity with compensated cavity, and counterbalance spring is locked between compensating piston and the left valve pocket, between polished rod and the compensating piston, between right valve pocket and the compensating piston and seal between left valve pocket and the right valve pocket, and the pressure compensator right-hand member connects electric notor.The present invention provides power by electric notor; Be connected with ground control system with cable, be used for power supply and transmit signal; The circuit control section is used for the action that comes control device according to the signal that ground control system is sent.
The sleeve pipe anchoring device is made up of anchor body, anchor log, stretching device, back pressure spring, oil pocket piston, pressure-control valve etc., and the anchor body is a 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; The anchor body has two groups of symmetrical elliptical cylinder-shape radial holes; Every group four radial hole is used to install anchor log; All radial holes are all perpendicular to the central axis of anchor body; Middle one group with other one group radially vertical each other, in four radial holes of same group the perforate of two radial holes of the perforate direction of two ends radial hole and centre in the opposite direction, the fluid hole is communicated with the fluid passage with radial hole; The first back pressure spring and oil pocket piston are installed in the shoe cream room, seal between anchor log and the anchor body and between oil pocket piston and the anchor body; Stretching device is made up of fixed bar, baffle plate, the second back pressure spring and supports end cap, and an end of fixed bar is fixed on the anchor body, and the other end connects baffle plate; The second back pressure spring is installed in the anchor log inner chamber, and is locked between baffle plate and the supports end cap; Anchor log is the cylindroid shape, and length is 2/3rds of anchor body diameter, and its upper end is a sphere, and the lower end is the cylindrical cavity that opening is arranged; On the oil pocket piston pressure-control valve is installed, is straight ejector half overflow valve, it plays the effect of protective device.
Force generating device is made up of piston shell, piston-rod assembly, end cap, crossover sub, piston pump etc., and piston shell is a drum, pipe and outer tube in comprising, and all there is screw thread at the outer tube two ends, and male thread end IV connects end cap, box thread end III splicing sleeve anchoring device; The inner tube outer surface axial groove that evenly distributes constitutes 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 made up of piston rod, piston and the axle collar, and in the pipe, two axle collars were equally spaced at the piston two ends and are installed on the piston rod, slide relatively with piston rod in it was installed in; The piston rod right-hand member is threaded with crossover sub, radially fixes with holding screw; Piston rod, piston and the axle collar circularize left pump sap cavity and right pump sap cavity with interior pipe branch, between piston and the interior pipe, between the axle collar and the piston rod and seal between end cap and the piston rod; Between the axle collar and the interior pipe is interference fit, radially connects with straight pin; The quantity that is communicated with the pump liquid passage of piston pump and left pump sap cavity equates with the quantity of the pump liquid passage that is communicated with piston pump and right pump sap cavity.One way valve, piston assembly, cam mechanism etc. are installed in the 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 move and transportation, can accomplish underground work with greater efficiency; Can practice thrift the confined space of the hiring cost and the offshore drilling platform of drilling well or workover rig, have favorable economic benefit; Usually be connected use with the cable type crawl device; The straight well section leans on self gravitation down to move; Provide motive force to deliver to the precalculated position by crawl device during through lower curved section and horizontal segment; This process uses cable will install that transmission is gone into the well and need be by coiled tubing, and high efficiency is of value to safety and environmental protection.
Description of drawings
Fig. 1 is the structural representation of a kind of cable type of the present invention down-hole axial force generating means;
Fig. 2 is the sleeve pipe grappling schematic representation of apparatus of a kind of cable type of the present invention down-hole axial force generating means
Fig. 3 is the structural representation of the sleeve pipe anchoring device of a kind of cable type of the present invention down-hole axial force generating means;
Fig. 4 is the structural representation of the stretching device 16 of a kind of cable type of the present invention down-hole axial force generating means;
Fig. 5 is the structural representation of the pressure-control valve 7 of a kind of cable type of the present invention down-hole axial force generating means;
Fig. 6 is the structural representation of the force generating device of a kind of cable type of the present invention down-hole axial force generating means;
Fig. 7 is the A-A sectional view of the force generating device of a kind of cable type of the present invention down-hole axial force generating means;
Fig. 8 is the structural representation of the piston pump 24 of a kind of cable type of the present invention down-hole axial force generating means;
Fig. 9 is the structural representation of the cable connector of a kind of cable type of the present invention down-hole axial force generating means;
Figure 10 is the structural representation of the pressure compensator of a kind of cable type of the present invention down-hole axial force generating means;
Figure 11 is the structural representation of the electric notor of a kind of cable type of the present invention down-hole axial force generating means;
Figure 12 is the structural representation of the circuit control section of a kind of cable type of the present invention down-hole axial force generating means.
Among the 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 pressure regulation handwheels, 22 pressure port, 23 oil spilling mouths; 24 piston pumps, 25 pump liquid passages, 26 left through holes, 27 left pump sap cavities, 28 interior pipes, 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 seals butt joint assembly, 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, Figure 11 and shown in Figure 12; A kind of cable type down-hole axial force generating means; Comprise successively parts such as the cable connector that connects, circuit control section, pressure compensator, electric notor, sleeve pipe anchoring device, force generating device; It is characterized in that: 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, connects housing 59, cable seal butt joint assembly 54 etc. between each parts, and fishing bell 57 is the ladder barrel shape; Cable holder 55, seal rubber sleeve 51, cable locking cover 56, locking sleeve 53 are installed in the fishing bell 57 successively; Cable seal butt joint assembly 54 is contained in and connects in the housing 59, and connecting housing 59 two ends all has screw thread and anti-rotation cushion rubber 58 is installed, and the one of which end is connected on the fishing bell 57; Other end connecting circuit control section, cable inner pressure ring 52 are installed on the cable locking cover 56; Pressure compensator is made up of left valve pocket 60, right valve pocket 64, filter 65, counterbalance spring 66, compensating piston 67, polished rod 63 etc.; Left side valve pocket 60 connects and composes compensated cavity with right valve pocket 64; Left side valve pocket 60 external surfaces circumferentially are equipped 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 the polished rod 63, and are fixed in the compensated cavity, compensating piston 67 is divided into left compensated cavity 62 and right compensated cavity 68 with compensated cavity; Counterbalance spring 66) is locked between compensating piston 67 and the left valve pocket 60, between polished rod 63 and the compensating piston 67, between right valve pocket 64 and the compensating piston 67 and sealing between left valve pocket 60 and the right valve pocket 64; The pressure compensator right-hand member connects electric notor.The present invention provides power by electric notor, is connected with ground control system with cable, is used for power supply and transmits signal.The circuit control section is used for the action that comes control device by the signal that ground control system is sent.
By Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5; The sleeve pipe anchoring device is made up of anchor body, anchor log, stretching device, back pressure spring, oil pocket piston, pressure-control valve etc., and anchor body 9 is a 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; Every group four radial hole 3 is used to install anchor log 1; All radial holes 3 are all perpendicular to anchor body central axis 15; Middle one group with other one group radially vertical each other, the perforate of two radial holes 3 of the perforate direction of two ends radial hole 3 and centre is in the opposite direction 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 is installed in the shoe cream room 5, seals between anchor log 1 and the anchor body (9) and between oil pocket piston 6 and the anchor body 9; Stretching device 16 is made up of fixed bar 10, baffle plate 4, the second back pressure spring 12 and supports end cap 18, and an end of fixed bar 10 is fixed on the anchor body 9, and the other end connects baffle plate 4; The second back pressure spring 12 is installed in anchor log inner chamber 14, and is locked between baffle plate 4 and the supports end cap 18; Anchor log 1 is the cylindroid shape, and length is 2/3rds of anchor body diameter, and its upper end is a sphere, and the lower end is the cylindrical cavity 14 that opening is arranged; Pressure-control valve 7 is installed on the oil pocket piston 6, is straight ejector half overflow valve.
Form by piston shell, piston-rod assembly, end cap, crossover sub, piston pump etc. by Fig. 6, Fig. 7 and force generating device shown in Figure 8; Piston shell is a drum; Pipe 28 and outer tube 38 in comprising; All there is screw thread at outer tube 38 two ends, and male thread end IV connects end cap 32, box thread end III splicing sleeve anchoring device; In the pipe 28 external surfaces axial groove 39 that evenly distributes, constitute pump liquid passage 25 with outer tube 38 inwalls, 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 made up of piston rod 37, piston 35 and the axle collar 36, and in the pipe 28, two axle collars 36 were equally spaced at piston 35 two ends and are installed on the piston rod 37, can slide relatively with piston rod (37) in it was installed in; Piston rod 37 right-hand member V are threaded with crossover sub 30, and are 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 with interior pipe 28, between piston 35 and the interior pipe 28, between the axle collar 36 and the piston rod 37 and sealing between end cap 32 and the piston rod 37; Be interference fit between the axle collar 36 and the interior pipe 28, radially connect with straight pin 29; 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 of the pump liquid passage 25 that is communicated with piston pump 24 and right pump sap cavity 34.One way valve, piston assembly, cam mechanism etc. are installed in the piston pump, and M, N hydraulic fluid port are communicated with right pump sap cavity, left pump sap cavity respectively.
The operating principle of a kind of cable type down-hole axial force generating means is: when device and fastening means thereof are sent to the precalculated position; Ground control system sends signal for the circuit control section through cable; The circuit control section starts electric notor by instruction, and the oil pocket piston 6 of its drive sleeve anchoring device moves extruding fluid in shoe cream room 5, and 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, is anchored on internal surface of sleeve pipe firmly, so the downhole tool string of down-hole axial force generating means and connection thereof is anchored at internal surface of sleeve pipe.
Ground control system sends signal for the circuit control section through cable more afterwards, and the circuit control section makes first cam mechanism, 44 work of piston pump 24 in the force generating device, piston motion about the first pumping cylinder piston assembly 46 is done thereupon by instruction; When it moves downward; Be drawn into first pumping cylinder 47 with the liquid in the right pump sap cavity 34 that the M hydraulic fluid port of piston pump 24 is communicated with, and when moving upward, liquid is discharged from via second pump housing passage 42 and N hydraulic fluid port and flows into left pump sap cavity 27; At this moment produce pressure reduction between two cavitys; Under the pressure effect of fluid, piston rod 37 through hole 33 directions to the right moves, thereby end thrust is provided for the downhole tool that is attached thereto.On the contrary; If ground control system is transmitted signal for the circuit control section and makes 45 work of second cam mechanism, when the second pumping cylinder piston assembly 48 moved downward, the liquid in the left pump sap cavity 27 was drawn into second pumping cylinder 49; And it is when moving upward; Liquid is discharged from via 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, provide axial tension to downhole hardware.Control piston pump 24 cam motion of 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 12 effects of the second back pressure spring; Anchor log 1 is regained in the anchor body 9, and 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 the downhole tool string.In the sleeve pipe anchoring device course of work; Pressure-control valve 7 plays the effect of safeguard protection, and when the pressure of shoe cream room 5 inner fluids surpassed setting value, pressure spring 20 was compressed; Spool 19 moves to right; Fluid just flows out from oil spilling mouth 23, and makes the oil liquid pressure in the cavity 5 equal setting pressure, thereby plays the effect of protective device.
In the process of work, when the pressure in the axial force generating means of down-hole increases and is higher than the fluid pressure of down-hole, because the effect of pressure reduction; Liquid in the 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 in the device reduces thereupon; When being reduced to the fluid pressure value of down-hole, compensating piston 67 stop motions, this moment, the device external and internal pressure reached equilibrium state.Otherwise when the fluid pressure of down-hole was higher than the pressure in the device, the liquid in the pit shaft can flow into left compensated cavity 62 through compensation channels 61, and compensating piston 67 moves right, and the pressure that the pressure in the device increases until compensating piston 67 both sides compensated cavities reaches balance.This pressure compensator is used to keep the inside and outside pressure balance of down-hole axial force generating means, plays the effect of the whole device of protection.
Claims (3)
1. cable type down-hole axial force generating means; Comprise successively parts such as the cable connector that connects, circuit control section, pressure compensator, electric notor, sleeve pipe anchoring device, force generating device; It is characterized in that: between each 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), connects housing (59), cable seal butt joint assembly (54) etc.; Fishing bell (57) is the ladder barrel shape; Cable holder (55), seal rubber sleeve (51), cable locking cover (56), locking sleeve (53) are installed in the fishing bell (57) successively; Cable seal butt joint assembly (54) is contained in and connects in the housing (59), and connecting housing (59) two ends all has screw thread and anti-rotation cushion rubber (58) is installed, and the one of which end is connected on the fishing bell (57); Other end connecting circuit control section, cable inner pressure ring (52) are installed on the cable locking cover (56); Pressure compensator is made up of left valve pocket (60), right valve pocket (64), filter (65), counterbalance spring (66), compensating piston (67), polished rod (63) etc.; Left side valve pocket (60) connects and composes compensated cavity with right valve pocket (64); Left side valve pocket (60) external surface circumferentially is equipped 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 the polished rod (63); And be fixed in the compensated cavity; Compensating piston (67) is divided into left compensated cavity (62) and right compensated cavity (68) with compensated cavity, and counterbalance spring (66) is locked between compensating piston (67) and the left valve pocket (60), between polished rod (63) and the compensating piston (67), between right valve pocket (64) and the compensating piston (67) and sealing between left valve pocket (60) and the right valve pocket (64); The pressure compensator right-hand member connects electric notor.
2. cable type according to claim 1 down-hole axial force generating means; It is characterized in that: the sleeve pipe anchoring device is made up of anchor body, anchor log, stretching device, back pressure spring, oil pocket piston, pressure-control valve etc.; Anchor body (9) is a monolithic; 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 (9) has two groups of symmetrical elliptical cylinder-shape radial holes (3); Every group four radial hole (3) is used to install anchor log (1); All radial holes (3) are all perpendicular to anchor body central axis (15); Middle one group with other one group radially vertical each other, the perforate of the perforate direction of two ends radial hole (3) and two radial holes in centre (3) is in the opposite direction 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 the shoe cream room (5), seal between anchor log (1) and the anchor body (9) and between oil pocket piston (6) and the anchor body (9); Stretching device (16) is made up of fixed bar (10), baffle plate (4), the second back pressure spring (12) and supports end cap (18), and an end of fixed bar (10) is fixed on the anchor body (9), and the other end connects baffle plate (4); The second back pressure spring (12) is installed in anchor log inner chamber (14), and is locked between baffle plate (4) and the supports end cap (18); Anchor log (1) is the cylindroid shape, and length is 2/3rds of anchor body diameter, and its upper end is a sphere, and the lower end is the cylindrical cavity (14) that opening is arranged; Pressure-control valve (7) is installed on the oil pocket piston (6), is straight ejector half overflow valve.
3. cable type according to claim 1 down-hole axial force generating means; It is characterized in that: force generating device is made up of piston shell, piston-rod assembly, end cap, crossover sub, piston pump etc.; Piston shell is a drum, comprises interior pipe (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; In pipe (28) external surface axial groove (39) that evenly distributes, constitute pump liquid passage (25) with outer tube (38) inwall, 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 made up of piston rod (37), piston (35) and the axle collar (36); It is installed in the interior pipe (28); Two axle collars (36) are equally spaced at piston (35) two ends and are installed on the piston rod (37), can slide relatively with piston rod (37); 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) with interior pipe (28), between piston (35) and the interior pipe (28), between the axle collar (36) and the piston rod (37) and sealing between end cap (32) and the piston rod (37); Between the axle collar (36) and the interior pipe (28) is interference fit, radially uses 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 of the pump liquid passage (25) that is communicated with piston pump (24) and right pump sap cavity (34).
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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 true CN102518407A (en) | 2012-06-27 |
| CN102518407B CN102518407B (en) | 2014-05-07 |
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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 |
| CN103075123A (en) * | 2013-01-23 | 2013-05-01 | 中国航天科技集团公司烽火机械厂 | Electro-hydraulic driving setting tool |
| CN104533316A (en) * | 2014-12-15 | 2015-04-22 | 中国石油天然气集团公司 | Underground stepping type bit pressure loading device and control method thereof |
| 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 |
| CN104775780A (en) * | 2015-03-17 | 2015-07-15 | 中国石油天然气股份有限公司 | Flexible connection type downhole instrument traction device |
| 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 |
| CN107425301A (en) * | 2017-07-22 | 2017-12-01 | 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 |
| CN107701147A (en) * | 2017-10-26 | 2018-02-16 | 中国石油大学(北京) | A kind of annular pressure downhole control valve |
| CN107916922A (en) * | 2017-12-25 | 2018-04-17 | 吉林大学 | Underground fish detection method and its device based on array-type flexible pressure sensor |
| CN108729899A (en) * | 2018-05-09 | 2018-11-02 | 刘刚 | Multi-functional borehole log bridle |
| 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 |
| CN114291210A (en) * | 2022-01-06 | 2022-04-08 | 西南石油大学 | Automatic anchoring device in seabed |
| CN114291210B (en) * | 2022-01-06 | 2023-06-09 | 西南石油大学 | Automatic submarine anchoring device |
| CN114687689A (en) * | 2022-04-21 | 2022-07-01 | 西南石油大学 | Recoverable bridging plug dropping tool |
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