CN109372491B - Underground self-releasing logging instrument for petroleum and natural gas exploitation - Google Patents
Underground self-releasing logging instrument for petroleum and natural gas exploitation Download PDFInfo
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- CN109372491B CN109372491B CN201811053245.5A CN201811053245A CN109372491B CN 109372491 B CN109372491 B CN 109372491B CN 201811053245 A CN201811053245 A CN 201811053245A CN 109372491 B CN109372491 B CN 109372491B
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title abstract description 52
- 239000003345 natural gas Substances 0.000 title abstract description 26
- 239000003209 petroleum derivative Substances 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 33
- 230000001681 protective effect Effects 0.000 claims description 43
- 238000005553 drilling Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 claims 1
- 239000004576 sand Substances 0.000 abstract description 7
- 238000005498 polishing Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009429 distress Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
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- Earth Drilling (AREA)
Abstract
The invention relates to a downhole self-releasing logging instrument for petroleum and natural gas exploitation. The oil and natural gas exploitation adopts the logging instrument of stuck self-releasing in the pit to include: logging instrument, lower unfreezing ware, first connecting piece, swivel joint, go up unfreezing ware and second connecting piece, first connecting piece one end with logging instrument connects, the other end with the unfreezing ware is connected down, the unfreezing ware is used for boring through the passageway at the whereabouts in-process down, second connecting piece one end with logging instrument connects, the other end with it connects to go up the unfreezing ware, it is used for boring through the passageway at the in-process that moves up to go up the unfreezing ware, swivel joint one end with it connects to go up the unfreezing ware, the other end is used for and bears the cable and be connected. When the underground self-stuck-releasing logging instrument is used for lowering oil and natural gas exploitation or the underground self-stuck-releasing logging instrument is used for lifting oil and natural gas exploitation, if the conditions of diameter shrinkage, well wall steps and sand bridge blockage are met, cutting and polishing can be carried out.
Description
Technical Field
The invention relates to the field of underground construction equipment, in particular to an underground self-stuck-releasing logging instrument for petroleum and natural gas exploitation.
Background
At present, along with the continuous development of development technologies of oil and gas fields, open holes of large-inclination oil and gas fields are more and more, the situation that well tracks are irregular is often met in the process of lowering a logging instrument by adopting a conventional cable, the geological conditions for developing the oil and gas fields are complex, the large-inclination and large-displacement directional well technology and the well depth track are difficult to control, the well drilling speed is improved, the period is shortened, the well wall is unstable if well bores and mud are not well treated, the complex well bore environments such as poor well tracks and the like cause the situation that logging is blocked by the logging, the obstacles can not be crossed frequently, operation failure is caused, if logging cannot be successfully carried out, logging needs to be carried out again, and the time and the cost caused by multiple times of logging are increased. And when the instrument meets the blockage, the instrument is possibly hung or damaged on the well wall, and the risk of damaging the instrument is increased.
At present, the underground card-blocking situations are more, and the following situations mainly exist:
1. borehole diameter shrinkage
Due to the fact that the diameter of the borehole is reduced for some reason, the situation often causes the logging instrument to be placed downwards to meet the resistance or lifted upwards to meet the resistance, the current borehole diameter is 216mm, the downhole logging instrument is 89mm, when the diameter of the borehole is reduced to be larger than 180mm, the downward contact resistance is not serious, but when the diameter of the borehole is reduced to be smaller than 160mm, most instruments can meet the resistance.
2. Borehole expanding and borehole wall step
At present, a PDC drill bit is mainly adopted for drilling, a mechanical rotating speed block is adopted for drilling, so that a well wall is not fully repaired, an irregular well bore is easily formed, after drilling fluid is poured, hydration expansion and hydration dispersion of mud shale are inevitable, the well wall collapses, a big-belly well bore or a sugarcoated haw well bore is formed, and nearly 50% of the existing logging distress situations are caused by the irregular well wall.
3. Sand bridge
In a part of the hole diameter expansion section, because the return speed of the drilling fluid at the hole diameter expansion section position is low in the circulation process, rock debris cannot return upwards in time and is retained in a large borehole, and the rock debris sinks and gathers at a small borehole after the circulation of the drilling fluid is stopped, so that a sand bridge can be formed. Because the diameter of the well at the position of the sand bridge is far smaller than the diameter of the drill bit, when the instrument string is placed at the position of the sand bridge, the situation of resistance can occur.
Disclosure of Invention
Therefore, it is necessary to provide a downhole self-stuck-releasing logging instrument for oil and gas exploitation aiming at the problem that the instrument is blocked when being lowered downhole.
In one embodiment of the present invention, an underground self-stuck freeing logging instrument for exploiting petroleum and natural gas is disclosed, which comprises: the device comprises a logging instrument, a lower unfreezing device, a first connecting piece, a rotary joint, an upper unfreezing device and a second connecting piece, wherein one end of the first connecting piece is connected with the logging instrument, the other end of the first connecting piece is connected with the lower unfreezing device, the lower unfreezing device is used for drilling through a channel in a falling process, one end of the second connecting piece is connected with the logging instrument, the other end of the second connecting piece is connected with the upper unfreezing device, the upper unfreezing device is used for drilling through the channel in an upward moving process, one end of the rotary joint is connected with the upper unfreezing device, and the other end of the rotary joint is used for being connected with a bearing cable.
The oil and natural gas exploitation adopts an underground self-releasing logging instrument, when in use, the oil and natural gas exploitation adopts the underground self-releasing logging instrument to descend along with the bearing cable, and in the descending process, the oil and natural gas exploitation adopts the underground self-releasing logging instrument to start working when the underground self-releasing logging instrument can not continuously descend, and the lower releasing device can open the obstacles encountered in the descending process. After the oil and natural gas exploitation is finished by the underground self-stuck freeing logging instrument, the bearing cable pulls the oil and natural gas exploitation to move upwards by the underground self-stuck freeing logging instrument, and when the oil and natural gas exploitation is stuck by the underground self-stuck freeing logging instrument in the process of moving upwards, the upper stuck freeing instrument starts to work to free up the obstacles encountered in the process of moving upwards. The setting of rotary joint can avoid bearing the weight of the cable rotation at last unfreezing ware during operation, and stability is better. The card releasing in the moving down and moving down process is completed through the mode, and the use is convenient. When the underground self-stuck-releasing logging instrument is used for lowering oil and natural gas exploitation or the underground self-stuck-releasing logging instrument is used for lifting oil and natural gas exploitation, if the conditions of diameter shrinkage, well wall steps and sand bridge blockage are met, cutting and polishing can be carried out.
In one embodiment, the lower unfreezing device comprises a first fixing seat, a first power assembly and a first unfreezing assembly, the first fixing seat is connected with the first connecting piece, the first power assembly is arranged on the first fixing seat, the first power assembly is connected with the first unfreezing assembly, the first power assembly is used for driving the first unfreezing assembly to rotate, and the first unfreezing assembly is used for drilling through a channel. When the lower unfreezing device starts to work, the first power assembly drives the first unfreezing assembly to rotate, and the barrier in the downward moving process is cleared in the rotating process of the first unfreezing assembly.
In one embodiment, the first jam releasing assembly comprises a rotating seat, a driving device, a sliding block, a plurality of connecting rods and a plurality of cutting knives, the rotating seat is connected with the first power assembly, the driving device is connected with the sliding block, the plurality of cutting knives are rotatably arranged on the rotating seat, the plurality of cutting knives are sequentially arranged and form a ring shape, the plurality of connecting rods are arranged, one end of each connecting rod is connected with the sliding block, the other end of each connecting rod is connected with the cutting knife, and the connecting rods are driven to move and further drive the cutting knives to rotate in the moving process of the sliding block. In the use process, the driving device starts to work to drive the sliding block to reach the designated position, so that the connecting rod drives the cutting knife to rotate to complete positioning. A plurality of cutting sword sets gradually and forms the annular and can form the toper when the shrink state, and forms the petal shape when opening the state, does not influence when guaranteeing normal use and transfers and shift up, and it is big to open back cutting area when needs use, ensures efficiency. After the cutting knife is positioned, the first power assembly drives the rotating shaft to rotate, when the rotating seat rotates, the first unfreezing assembly integrally rotates, and surrounding obstacles are cut in the rotating process of the cutting knife. The method completes the lowering of the underground self-releasing logging instrument for the exploitation of petroleum and natural gas.
In one embodiment, the driving device further comprises a guide rail, the guide rail is arranged on the rotating base, the sliding block is annular, and the sliding block is sleeved on the guide rail and moves along the axial direction of the guide rail.
In one embodiment, the driving device comprises a first hydraulic station and a first hydraulic cylinder, the first hydraulic station is connected with the first hydraulic cylinder, and the first hydraulic cylinder is connected with the sliding block. The cooperation of first hydraulic pressure station and first pneumatic cylinder can provide power for the removal of slider, and power take off is stable.
In one embodiment, the cutting knife comprises a tooth holder, a cutting blade and a bolt, wherein the tooth holder is hinged with the rotating seat, and the cutting blade is connected with the tooth holder through the bolt. The cutting blade is connected with the tooth holder through the bolt, so that the cutting blade is firm and stable, and the structure and the layout of the cutting blade are beneficial to cutting.
In one embodiment, the first power assembly includes a motor, a rotating shaft, a bearing seat, a bearing, and a sealing end cover, the motor is connected to the rotating shaft and used for driving the rotating shaft to rotate, the rotating shaft is disposed in the bearing seat, the bearing is disposed between the rotating shaft and the inner wall of the bearing seat, and the sealing end cover is disposed on the bearing seat and used for sealing the bearing seat. The combination mode of the motor and the rotating shaft ensures that the power supply mode is simple, stable and reliable. The arrangement of the sealing end cover can prevent external liquid from entering the first power assembly, and the arrangement of the sealing end cover ensures that the internal assembly is not corroded to prolong the service life.
In one embodiment, the oil and gas exploitation downhole self-stuck freeing logging instrument further comprises a first telescopic protection sleeve and a second telescopic protection sleeve, the first telescopic protection sleeve is connected with the logging instrument, the first telescopic protection sleeve is arranged on the first connecting piece, the first telescopic protection sleeve abuts against the lower stuck freeing device when being stretched, the second telescopic protection sleeve is connected with the logging instrument, the second telescopic protection sleeve is arranged on the second connecting piece, and the second telescopic protection sleeve abuts against the upper stuck freeing device when being stretched. The arrangement of the first telescopic protective sleeve and the second telescopic protective sleeve can protect parts such as a hydraulic cylinder, a hydraulic pipeline and the like in an internal structure when the second connecting piece moves up and down, and the hydraulic cylinder is prevented from being damaged or leaking oil, so that the unfreezing device is prevented from being out of work. The underground is filled with drilling fluid, the drilling fluid comprises mud, clay-free phase flushing fluid, emulsion, foam and the like, and the drilling fluid has a certain cutting effect and can damage a hydraulic pipe in the process of moving approximately ten thousand meters up and down in the underground of the logging instrument, so that the hydraulic pipe is protected by arranging a telescopic protective sleeve.
In one embodiment, the first telescopic protection sleeve comprises a second hydraulic station, a second hydraulic cylinder, a fixed sleeve, a first telescopic sleeve and a second telescopic sleeve, the fixed sleeve is connected with the logging instrument, the fixed sleeve, the first telescopic sleeve and the second telescopic sleeve are sequentially and movably connected, when the fixed sleeve, the first telescopic sleeve and the second telescopic sleeve are in an extended state, the second telescopic sleeve abuts against the lower trip, the second hydraulic station is connected with the second hydraulic cylinder, one end of the second hydraulic cylinder is connected with the fixed sleeve, and the other end of the second hydraulic cylinder is connected with the second telescopic sleeve. The setting of fixed cover, first flexible cover and the flexible cover of second can be fine protect the ware of unfreezing down, can fix a position the ware of unfreezing down simultaneously, and first flexible protective sheath is in the extension state under normal condition and can be spacing to the ware of unfreezing down. When the card needs to be unlocked, the first telescopic protective sleeve is retracted, and the lower card unlocking device is opened for unlocking the card.
In one embodiment, one end of the second telescopic sleeve, which abuts against the lower unfreezing device, is an arc surface. The end part of the second telescopic sleeve is an arc surface and forms a conical arc shape with the lower release device, so that the second telescopic sleeve is convenient to lift or lower, the blocking probability is reduced, and the lower release device is closed when the sleeve extends out when the lower release device does not meet the blocking. When the card is stuck, the sleeve is retracted, the lower card releaser can be opened, and the cutting of the blocked position can be freely completed.
In one embodiment, the first telescopic protection sleeve further comprises a first protection cover, a second protection cover and a third protection cover, the first protection cover, the second protection cover and the third protection cover are sequentially and movably connected, the first protection cover, the second protection cover and the third protection cover are sleeved with the fixed sleeve, the first telescopic sleeve and the second telescopic sleeve form an installation gap therebetween, the first protection cover and the fixed sleeve are connected, the third protection cover and the second telescopic sleeve are connected, the second hydraulic station and the second hydraulic cylinder are arranged in the installation gap. The setting of first protection casing, second protection casing and third protection casing can protect second hydraulic pressure station and second pneumatic cylinder, and protection second hydraulic pressure station and second pneumatic cylinder are not scraped by the wall of a well and are damaged, and life is longer.
In one embodiment, one end of the first connecting piece is rotatably connected with the logging instrument, the other end of the first connecting piece is rotatably connected with the lower unfreezing device, one end of the second connecting piece is rotatably connected with the logging instrument, and the other end of the second connecting piece is rotatably connected with the upper unfreezing device. The swing joint at first connecting piece and second connecting piece both ends sets up, can make down the ware of releasing the card and go up the ware during operation of releasing the card and have certain degree of freedom, and the effect of releasing the card is better, and simple structure is ingenious, convenient to use.
In one embodiment, the upper releasing device comprises a second fixed seat, a second power assembly and a second releasing assembly, the second fixed seat is connected with the second connecting piece, the second power assembly is arranged on the second fixed seat, the second power assembly is connected with the second releasing assembly, the second power assembly is used for driving the second releasing assembly to rotate, and the second releasing assembly is used for drilling through a channel.
Drawings
FIG. 1 is a front view of a downhole self-stuck tool for oil and gas production, according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a downhole self-stuck tool for producing oil and gas in accordance with an embodiment of the present invention;
FIG. 3 is a perspective view of a downhole self-uncapping logging tool for oil and gas exploration, according to an embodiment of the present disclosure;
FIG. 4 is a diagram illustrating a working condition of the downhole self-releasing logging tool after the protective cover is removed for oil and gas exploitation according to an embodiment of the present invention;
FIG. 5 is a front view of the lower card hopper disclosed in the embodiments of the present invention;
FIG. 6 is a cross-sectional view of a lower release disclosed in an embodiment of the present invention;
FIG. 7 is a front view of the lower card hopper according to the embodiment of the present invention;
FIG. 8 is a perspective view of the lower card ejector according to the embodiment of the present invention;
FIG. 9 is a front view of a cutting insert according to the disclosed embodiment of the present invention;
FIG. 10 is a perspective view of a first telescoping sheath disclosed in accordance with an embodiment of the invention;
FIG. 11 is a cross-sectional view of a first telescoping sheath disclosed in accordance with an embodiment of the invention;
FIG. 12 is a perspective view of the first telescoping protective sheath with the protective cover removed, in accordance with an embodiment of the present disclosure;
fig. 13 is a front view of the first telescoping protective sleeve in a retracted state with the protective cover removed, as disclosed in an embodiment of the invention.
Wherein:
1. a logging instrument;
2. the lower stuck releasing device comprises a lower stuck releasing device, 21, a first fixed seat, 22, a first power assembly, 221, a motor, 222, a rotating shaft, 223, a bearing seat, 224, a bearing, 225, a sealing end cover, 23, a first stuck releasing assembly, 231, a rotating seat, 232, a driving device, 2321, a first hydraulic station, 2322, a first hydraulic cylinder, 233, a sliding block, 234, a connecting rod, 235, a cutting knife, 2351, a tooth seat, 2352, a cutting blade, 2353, a bolt and 236 and a guide rail;
3. a first connecting member;
4. a first telescopic protection sleeve, 41, a second hydraulic station, 42, a second hydraulic cylinder, 43, a fixed sleeve, 44, a first telescopic sleeve, 45, a second telescopic sleeve, 46, a first protection cover, 47, a second protection cover and 48, a third protection cover;
5. a swivel joint;
6. the upper unfreezing device comprises an upper unfreezing device, a second fixed seat 61, a second power assembly 62 and a second unfreezing assembly 63;
7. a second connecting member;
8. a second telescoping protective sleeve;
9. carrying the cable.
Detailed Description
Referring to fig. 1, 2, 3 and 4, in one embodiment of the present invention, an oil and gas exploitation downhole self-stuck freeing logging instrument is disclosed, which includes: the well logging instrument 1, lower release the card ware 2, first connecting piece 3, swivel joint 5, go up release the card ware 6 and second connecting piece 7, first connecting piece 3 one end is connected with well logging instrument 1, the other end is connected with lower release the card ware 2, lower release the card ware 2 and be used for boring through the passageway in the whereabouts in-process, second connecting piece 7 one end is connected with well logging instrument 1, the other end is connected with last release the card ware 6, go up release the card ware 6 and be used for boring through the passageway in the in-process that shifts up, swivel joint 5 one end is connected with last release the card ware 6, the other end is used for being connected with bearing cable 9.
The oil and natural gas exploitation adopts an underground self-releasing logging instrument, when in use, the oil and natural gas exploitation adopts the underground self-releasing logging instrument to descend along with the bearing cable 9, and in the descending process, the lower releasing device 2 starts to work when the oil and natural gas exploitation adopts the underground self-releasing logging instrument which can not descend continuously, and the lower releasing device 2 can get through the obstacle encountered in the descending process. After the oil and natural gas exploitation is finished by the underground self-releasing logging instrument, the bearing cable 9 pulls the oil and natural gas exploitation to move upwards by the underground self-releasing logging instrument, and when the oil and natural gas exploitation is blocked by the underground self-releasing logging instrument in the moving upwards process, the upper releasing device 6 starts to work to open up the obstacles encountered in the moving upwards process. The rotary joint 5 can prevent the bearing cable 9 from rotating when the upper unfreezing device 6 works, and the stability is better. The card releasing in the moving down and moving down process is completed through the mode, and the use is convenient. When the underground self-stuck-releasing logging instrument is used for lowering oil and natural gas exploitation or the underground self-stuck-releasing logging instrument is used for lifting oil and natural gas exploitation, if the conditions of diameter shrinkage, well wall steps and sand bridge blockage are met, cutting and polishing can be carried out.
Referring to fig. 5 and 6, optionally, the lower releasing device 2 includes a first fixing base 21, a first power assembly 22 and a first releasing assembly 23, the first fixing base 21 is connected to the first connecting member 3, the first power assembly 22 is disposed on the first fixing base 21, the first power assembly 22 is connected to the first releasing assembly 23, the first power assembly 22 is configured to drive the first releasing assembly 23 to rotate, and the first releasing assembly 23 is configured to drill through the passage. When the lower unfreezing device 2 starts to work, the first power assembly 22 drives the first unfreezing assembly 23 to rotate, and the obstacle in the downward moving process is cleared in the rotating process of the first unfreezing assembly 23.
Referring to fig. 6, 7 and 8, optionally, the first jam clearing assembly 23 includes a rotary base 231, a driving device 232, a sliding block 233, a connecting rod 234 and a plurality of cutting blades 235, the rotary base 231 is connected to the first power assembly 22, the driving device 232 is connected to the sliding block 233, the plurality of cutting blades 235 are rotatably disposed on the rotary base 231, the plurality of cutting blades 235 are sequentially disposed and form a ring, the plurality of connecting rods 234 are disposed, one end of each connecting rod 234 is connected to the sliding block 233, the other end of each connecting rod 234 is connected to the cutting blade 235, and the connecting rod 234 is driven to move during the movement of the sliding block 233, so as to drive the cutting blades 235 to rotate. In use, the driving device 232 starts to work to drive the sliding block 233 to a specified position, so that the connecting rod 234 drives the cutting blade 235 to rotate to complete the positioning. A plurality of cutting sword 235 sets gradually and form the annular and can form the toper when the shrink state, and form the petal shape when opening the state, do not influence when guaranteeing normal use and transfer and shift up, and it is big to open back cutting area when needs use, guarantee efficiency. After the cutting blade 235 is positioned, the first power assembly 22 drives the rotating shaft 231 to rotate, when the rotating base 231 rotates, the first stuck freeing assembly 23 rotates integrally, and the surrounding obstacles are cut during the rotation of the cutting blade 235. The method completes the lowering of the underground self-releasing logging instrument for the exploitation of petroleum and natural gas.
Referring to fig. 6 and fig. 8, optionally, the driving device 232 further includes a guide rail 236, the guide rail 236 is disposed on the rotating base 231, the sliding block 233 is annular, and the sliding block 233 is sleeved on the guide rail 236 and moves along the axial direction of the guide rail 236.
Referring to fig. 6, optionally, the driving device 232 includes a first hydraulic station 2321 and a first hydraulic cylinder 2322, the first hydraulic station 2321 is connected to the first hydraulic cylinder 2322, and the first hydraulic cylinder 2322 is connected to the slider 233. The cooperation of the first hydraulic station 2321 and the first hydraulic cylinder 2322 can provide power for the movement of the slider 233, and the power output is stable.
Referring to fig. 9, the cutting blade 235 may optionally include a tooth holder 2351, a cutting blade 2352 and a bolt 2353, wherein the tooth holder 2351 is hinged to the rotary holder 231, and the cutting blade 2352 is connected to the tooth holder 2351 by the bolt 2353. The cutting blade 2352 is connected with the tooth holder 2351 through a bolt 2353, so that the cutting blade 235 is firm and stable, and the structure and the layout form are favorable for cutting.
Referring to fig. 6, optionally, the first power assembly 22 includes a motor 221, a rotating shaft 222, a bearing seat 223, a bearing 224, and a sealing cover 225, where the motor 221 is connected to the rotating shaft 222 and is used for driving the rotating shaft 222 to rotate, the rotating shaft 222 is disposed in the bearing seat 223, the bearing 224 is disposed between the rotating shaft 222 and an inner wall of the bearing seat 223, and the sealing cover 225 is disposed on the bearing seat 223 and is used for sealing the bearing seat 223. The combination of the motor 221 and the rotating shaft 222 makes the power supply simple, stable and reliable. The end cap 225 is configured to prevent external fluids from entering the first power module 22, and the end cap 225 is configured to protect internal components from corrosion for longer periods of time.
Referring to fig. 1 and 2, optionally, the downhole self-stuck-releasing logging instrument for oil and gas exploitation further includes a first telescopic protective sleeve 4 and a second telescopic protective sleeve 8, the first telescopic protective sleeve 4 is connected with the logging instrument 1, the first connecting member 3 is disposed on the first telescopic protective sleeve 4, the first telescopic protective sleeve 4 abuts against the lower stuck releasing device 2 when being stretched, the second telescopic protective sleeve 8 is connected with the logging instrument 1, the second connecting member 7 is disposed on the second telescopic protective sleeve 8, and the second telescopic protective sleeve 8 abuts against the upper stuck releasing device 6 when being stretched. The arrangement of the first telescopic protective sleeve 4 and the second telescopic protective sleeve 8 can protect parts such as a hydraulic cylinder and a hydraulic pipeline in an internal structure in the process of moving up and down by the lower unfreezing device 2, the first connecting piece 3, the upper unfreezing device 6 and the second connecting piece 7, and the hydraulic cylinder is prevented from being damaged or oil leakage is avoided, so that the unfreezing device is prevented from being out of work. The underground is filled with drilling fluid, the drilling fluid comprises mud, clay-free phase flushing fluid, emulsion, foam and the like, and the drilling fluid has a certain cutting effect and can damage a hydraulic pipe in the process of moving approximately ten thousand meters up and down in the underground of the logging instrument, so that the hydraulic pipe is protected by arranging a telescopic protective sleeve.
Referring to fig. 11, 12 and 13, optionally, the first retractable protection sleeve 4 includes a second hydraulic station 41, a second hydraulic cylinder 42, a fixing sleeve 43, a first retractable sleeve 44 and a second retractable sleeve 45, the fixing sleeve 43 is connected to the logging instrument 1, the fixing sleeve 43, the first retractable sleeve 44 and the second retractable sleeve 45 are movably connected in sequence, when the fixing sleeve 43, the first retractable sleeve 44 and the second retractable sleeve 45 are in an extended state, the second retractable sleeve 45 abuts against the lower jam release 2, the second hydraulic station 41 is connected to the second hydraulic cylinder 42, one end of the second hydraulic cylinder 42 is connected to the fixing sleeve 43, and the other end is connected to the second retractable sleeve 45. The setting of fixed cover 43, first flexible cover 44 and the flexible cover 45 of second can be fine separates the card ware 2 down and protect, can fix a position the card ware 2 down simultaneously, and first flexible protective sheath 4 is in the extension state under normal condition and can carry on spacingly to separating the card ware 2 down. When the card needs to be unlocked, the first telescopic protective sleeve 4 is retracted, and the lower card unlocking device 2 is opened for unlocking the card.
Optionally, one end of the second telescopic sleeve 45 abutting against the lower card releaser 2 is an arc surface. The end part of the second telescopic sleeve 45 is an arc surface and forms a conical arc shape with the lower release device 2, so that the second telescopic sleeve is convenient to lift or lower, the blocking probability is reduced, the sleeve extends out when the second telescopic sleeve is not blocked, and the lower release device 2 is closed. When the card is stuck, the sleeve is retracted, the lower card releaser 2 can be opened, and the cutting of the blocked position can be freely completed.
Referring to fig. 2 and 11, optionally, the first retractable protective sleeve further includes a first protective cover 46, a second protective cover 47 and a third protective cover 48, the first protective cover 46, the second protective cover 47 and the third protective cover 48 are movably connected in sequence, the first protective cover 46, the second protective cover 47 and the third protective cover 48 are sleeved on the fixed sleeve 43, the first retractable sleeve 44 and the second retractable sleeve 45, an installation gap is formed between the first protective cover 46, the second protective cover 47 and the third protective cover 48 and the fixed sleeve 43, and between the first retractable sleeve 44 and the second retractable sleeve 45, the first protective cover 46 is connected with the fixed sleeve 43, the third protective cover 48 is connected with the second retractable sleeve 45, and the second hydraulic station 41 and the second hydraulic cylinder 42 are disposed in the installation gap. The arrangement of the first protective cover 46, the second protective cover 47 and the third protective cover 48 can protect the second hydraulic station 41 and the second hydraulic cylinder 42, protect the second hydraulic station 41 and the second hydraulic cylinder 42 from being scraped by the well wall, and prolong the service life.
Optionally, one end of the first connecting member 3 is rotatably connected to the logging instrument 1, the other end is rotatably connected to the lower trip device 2, one end of the second connecting member 7 is rotatably connected to the logging instrument 1, and the other end is rotatably connected to the upper trip device 6. The swing joint at the two ends of the first connecting piece 3 and the second connecting piece 7 can enable the lower unfreezing device 2 and the upper unfreezing device 6 to have certain degree of freedom in working, and the unfreezing device is better in unfreezing effect, simple and ingenious in structure and convenient to use.
Referring to fig. 2, optionally, the upper releasing device 6 includes a second fixing base 61, a second power assembly 62 and a second releasing assembly 63, the second fixing base 61 is connected to the second connecting member 7, the second power assembly 62 is disposed on the second fixing base 61, the second power assembly 62 is connected to the second releasing assembly 63, the second power assembly 62 is configured to drive the second releasing assembly 63 to rotate, and the second releasing assembly 23 is configured to drill through the channel.
First hydraulic station 2321 and second hydraulic station 41 used in an embodiment of the present invention include a 0.37KW motor and hydraulic pump CB-B4. The liquid inlet pipe and the liquid outlet pipe of the first hydraulic station 2321 are connected with corresponding interfaces of the flow control valve on the first hydraulic cylinder 2322. The liquid inlet pipe and the liquid outlet pipe of the second hydraulic station 41 are connected with the corresponding interfaces of the flow control valves on the second hydraulic cylinder 42.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. An oil and gas exploitation underground self-stuck freeing logging instrument, characterized in that, the oil and gas exploitation underground self-stuck freeing logging instrument includes: the device comprises a logging instrument (1), a lower unfreezing device (2), a first connecting piece (3), a rotary joint (5), an upper unfreezing device (6) and a second connecting piece (7), wherein one end of the first connecting piece (3) is connected with the logging instrument (1), the other end of the first connecting piece is connected with the lower unfreezing device (2), the lower unfreezing device (2) is used for drilling through a channel in the falling process, one end of the second connecting piece (7) is connected with the logging instrument (1), the other end of the second connecting piece (7) is connected with the upper unfreezing device (6), the upper unfreezing device (6) is used for drilling through the channel in the moving process, one end of the rotary joint (5) is connected with the upper unfreezing device (6), and the other end of the rotary joint is used for being connected with a bearing cable (9); the lower unfreezing device (2) comprises a first fixed seat (21), a first power assembly (22) and a first unfreezing assembly (23), the first fixed seat (21) is connected with the first connecting piece (3), the first power assembly (22) is arranged on the first fixed seat (21), the first power assembly (22) is connected with the first unfreezing assembly (23), the first power assembly (22) is used for driving the first unfreezing assembly (23) to rotate, and the first unfreezing assembly (23) is used for drilling through a channel; the first unfreezing component (23) comprises a rotating seat (231), a driving device (232), a sliding block (233), a connecting rod (234) and a plurality of cutting knives (235), wherein the rotating seat (231) is connected with the first power component (22), the driving device (232) is connected with the sliding block (233), the number of the cutting knives (235) is multiple, the plurality of the cutting knives (235) are rotatably arranged on the rotating seat (231), the plurality of the cutting knives (235) are sequentially arranged and form a ring shape, the number of the connecting rod (234) is multiple, one end of each connecting rod (234) is connected with the sliding block (233), the other end of each connecting rod is connected with the cutting knife (235), and the connecting rod (234) is driven to move and further drive the cutting knives (235) to rotate in the moving process of the sliding block (233).
2. A downhole self-stuck logging instrument according to claim 1, wherein the driving means (232) comprises a first hydraulic station (2321) and a first hydraulic cylinder (2322), the first hydraulic station (2321) being connected to the first hydraulic cylinder (2322), the first hydraulic cylinder (2322) being connected to the slide (233).
3. A downhole self-stuck logging instrument according to claim 1, wherein the cutting blade (235) comprises a toothholder (2351), a cutting blade (2352) and a bolt (2353), the toothholder (2351) is hinged to the rotary holder (231), and the cutting blade (2352) is connected with the toothholder (2351) through the bolt (2353).
4. The downhole self-stuck logging instrument for oil and gas production according to claim 1, wherein the first power assembly (22) comprises a motor (221), a rotating shaft (222), a bearing seat (223), a bearing (224) and a sealing end cover (225), the motor (221) is connected with the rotating shaft (222) and used for driving the rotating shaft (222) to rotate, the rotating shaft (222) is arranged in the bearing seat (223), the bearing (224) is arranged between the rotating shaft (222) and the inner wall of the bearing seat (223), and the sealing end cover (225) is arranged on the bearing seat (223) and used for sealing the bearing seat (223).
5. The oil and gas exploitation downhole self-stuck freeing logging instrument according to claim 1, further comprising a first telescopic protection sleeve (4) and a second telescopic protection sleeve (8), wherein the first telescopic protection sleeve (4) is connected with the logging instrument (1), the first connecting member (3) is sleeved with the first telescopic protection sleeve (4), the first telescopic protection sleeve (4) abuts against the lower stuck freeing device (2) when being stretched, the second telescopic protection sleeve (8) is connected with the logging instrument (1), the second connecting member (7) is sleeved with the second telescopic protection sleeve (8), and the second telescopic protection sleeve (8) abuts against the upper stuck freeing device (6) when being stretched.
6. The oil and gas exploitation downhole self-stuck log according to claim 5, wherein the first telescopic protective sleeve (4) comprises a second hydraulic station (41), a second hydraulic cylinder (42), a fixed sleeve (43), a first telescopic sleeve (44) and a second telescopic sleeve (45), the fixed sleeve (43) is connected with the log (1), the fixed sleeve (43), the first telescopic sleeve (44) and the second telescopic sleeve (45) are sequentially and movably connected, when the fixed sleeve (43), the first telescopic sleeve (44) and the second telescopic sleeve (45) are in an extended state, the second telescopic sleeve (45) abuts against the lower stuck freeing device (2), the second hydraulic station (41) is connected with the second hydraulic cylinder (42), one end of the second hydraulic cylinder (42) is connected with the fixed sleeve (43), and the other end of the second hydraulic cylinder is connected with the second telescopic sleeve (45).
7. The downhole self-releasing logging instrument for petroleum and gas exploitation according to claim 6, further comprising a first shield (46), a second shield (47), and a third shield (48), wherein the first shield (46), the second shield (47), and the third shield (48) are sequentially and movably connected, the first shield (46), the second shield (47), and the third shield (48) are sleeved with the fixing sleeve (43), the first telescopic sleeve (44), and the second telescopic sleeve (45), the first shield (46), the second shield (47), and the third shield (48) are connected with the fixing sleeve (43), the first telescopic sleeve (44), and the second telescopic sleeve (45) to form an installation gap therebetween, the first shield (46) is connected with the fixing sleeve (43), the third shield (48) is connected with the second telescopic sleeve (45), and the third hydraulic station (41) and the second hydraulic cylinder (42) are disposed in the installation gap.
8. A downhole self-stuck freeing logging instrument according to claim 1, wherein the first connector (3) has one end rotatably connected to the logging instrument (1) and the other end rotatably connected to the lower stuck releaser (2), and the second connector (7) has one end rotatably connected to the logging instrument (1) and the other end rotatably connected to the upper stuck releaser (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811053245.5A CN109372491B (en) | 2018-09-10 | 2018-09-10 | Underground self-releasing logging instrument for petroleum and natural gas exploitation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811053245.5A CN109372491B (en) | 2018-09-10 | 2018-09-10 | Underground self-releasing logging instrument for petroleum and natural gas exploitation |
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| CN109372491B true CN109372491B (en) | 2023-03-24 |
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| CN110454106B (en) * | 2019-09-09 | 2020-06-09 | 北京大德广源石油技术服务有限公司 | Underground unfreezing device for ultrasonic logging |
| CN111997551B (en) * | 2020-09-02 | 2021-06-22 | 西华大学 | Shale gas drilling type coring robot |
| CN115370311B (en) * | 2022-08-19 | 2023-06-13 | 中国石油天然气集团有限公司 | Variable diameter unclamping device and method suitable for passive magnetic guiding tool auxiliary insertion |
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| US9133676B2 (en) * | 2011-12-27 | 2015-09-15 | Schlumberger Technology Corporation | Reducing axial wave reflections and identifying sticking in wireline cables |
| CN203347720U (en) * | 2013-06-27 | 2013-12-18 | 马登宝 | Intelligent well logging smoothing machine |
| CN203729935U (en) * | 2013-11-30 | 2014-07-23 | 华能高科(天津)油气能源工程开发有限公司 | Self-crawling drift diameter device for well logging |
| CN204941414U (en) * | 2015-08-05 | 2016-01-06 | 中国石油天然气股份有限公司 | Wireline logging release device |
| CN105781463B (en) * | 2016-04-11 | 2019-01-15 | 中国海洋石油集团有限公司 | From releasing tool |
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