WO2016078181A1 - 一种连续油管速度管柱及排液采气的方法 - Google Patents

一种连续油管速度管柱及排液采气的方法 Download PDF

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Publication number
WO2016078181A1
WO2016078181A1 PCT/CN2014/094915 CN2014094915W WO2016078181A1 WO 2016078181 A1 WO2016078181 A1 WO 2016078181A1 CN 2014094915 W CN2014094915 W CN 2014094915W WO 2016078181 A1 WO2016078181 A1 WO 2016078181A1
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WO
WIPO (PCT)
Prior art keywords
coiled tubing
joint
mandrel
piston
wall
Prior art date
Application number
PCT/CN2014/094915
Other languages
English (en)
French (fr)
Inventor
宁世品
叶登胜
梅鹏
Original Assignee
杰瑞能源服务有限公司
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Application filed by 杰瑞能源服务有限公司 filed Critical 杰瑞能源服务有限公司
Publication of WO2016078181A1 publication Critical patent/WO2016078181A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
    • E21B23/10—Tools specially adapted therefor
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/127—Packers; Plugs with inflatable sleeve
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
    • 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

Definitions

  • the invention relates to the technical field of petroleum engineering, in particular to a coiled tubing speed pipe string and a method for discharging liquid gas.
  • the speed tube is generally used.
  • the technology of column drainage and gas recovery is to improve the liquid carrying capacity of the gas, so that the gas well can be restored to a stable production state.
  • the coiled tubing speed string suspended in the oil pipe is composed of a coiled tubing, a coiled tubing joint, a hydraulic drop hand, a speed string hanger, and a plug.
  • the conventional coiled tubing speed column is to suspend the coiled tubing at the wellhead.
  • the length of the coiled tubing required is long. Since the processing period of the coiled tubing is limited by the domestic processing level and the processing speed is slow, the production problem of the gas well cannot be effectively solved.
  • the present invention provides a coiled tubing speed pipe string to shorten the length of use of the coiled tubing and ensure timely solution of gas well production problems.
  • the invention also provides a coiled tubing speed column The method of draining gas.
  • the present invention provides the following technical solutions:
  • a coiled tubing speed column comprising:
  • the hanger disposed below the hydraulic drop hand, the hanger comprising:
  • a set top joint sleeved on an outer side of the mandrel and threadedly coupled to the mandrel, the set top joint and the hydraulic drop hand being connected by a lock block;
  • the baffle sleeve is sleeved on an outer wall of the mandrel and an upper end surface of the baffle ring abuts against a lower end surface of the upper joint of the seat;
  • the rubber cylinder is sleeved on an outer wall of the mandrel, and an upper end surface of the rubber cylinder is opposite to a lower end surface of the retaining ring;
  • An upper piston disposed on an outer side of the mandrel and abutting against a lower end surface of the rubber cylinder, wherein an inner wall of the upper piston is a stepped surface, and an upper step surface of the upper piston has a smaller diameter than a lower stepped surface
  • the upper step surface of the upper piston is located above the pressure transmission hole;
  • a lower piston sleeved on an outer side of the mandrel, an inner wall of the lower piston mates with an outer wall of the mandrel, an outer wall of the lower piston is a stepped surface, and an upper step surface of the lower piston has a lower diameter than a lower step
  • the lower end of the face has a small diameter
  • the outer wall of the stepped surface of the lower piston cooperates with the inner wall of the lower step surface of the upper piston
  • the lower piston and the upper piston are fixed by a second shearing pin
  • the lower piston and The mandrel is fixed by a third shearing pin
  • an upper stepped surface of the lower piston is located below the pressure transmitting hole
  • a check ring disposed between the upper piston and the lower piston, and the check ring is located at a bottom of an inner wall of a lower step surface of the upper piston, the check ring and the The upper piston is screwed, and the inner wall of the lower piston is provided with an external thread that cooperates with the internal thread of the retaining ring;
  • a second coiled tubing connected to the set lower joint, the second coiled tubing and the set under the seal
  • the joint is connected by a second coiled tubing joint, the bottom end of which is connectable to the plug.
  • the hydraulic throwing hand comprises:
  • the lost joint is threadedly connected to the first coiled tubing joint
  • a lower hand joint that is sleeved on the outer wall of the hand-to-hand joint and that is threadedly connected to the hand-to-hand joint, and a lower end of the drop-off joint is provided with a first hole for receiving the lock block, a first groove corresponding to the position of the first hole is disposed on the socket upper joint;
  • a sliding sleeve that abuts against a lower end surface of the lost connector and cooperates with an inner wall of the lower hand joint, and the upper end of the sliding sleeve is provided with a tapered surface for supporting the ball, and the sliding sleeve and the lost hand
  • the joint is connected by a first shear pin, and the sliding sleeve is provided with a first groove for receiving the lock block, and the first groove is located above the first hole.
  • the method further comprises:
  • a connecting barrel an upper end of the connecting barrel is opposite to a lower end of the cone, and the connecting barrel is screwed to the set lower joint;
  • a ball seat disposed between the mandrel and the lower joint, the upper end of the ball seat abutting the lower end of the connecting barrel, and the inner wall of the ball seat is provided with a tapered surface for supporting the ball,
  • the ball seat and the seated lower joint are connected by a fourth shearing nail;
  • a third groove disposed on the mandrel, wherein the third groove is provided with a lock ring, and the lock ring is pressed by the ball seat;
  • a fourth groove is disposed on the mandrel, and a limiting ring for preventing the cone from slipping is disposed in the fourth groove, and the limiting ring is embedded in the fourth groove.
  • the connecting tube is provided with a first central strip.
  • the outer wall of the upper joint is provided with a second central strip.
  • the outer wall of the slip is provided with inverted teeth in two directions.
  • the hand-to-hand joint and the hand-to-hand joint are screwed and fastened.
  • the inner and outer sides of the retaining ring are provided with zigzag threads.
  • the slips are provided with staggered blind grooves, and the blind grooves are evenly arranged on the slips.
  • a method for draining gas from a coiled tubing speed column comprising the steps of:
  • the first coiled tubing, the first coiled tubing joint and the hydraulic drop hand are presented to the gas well by the coiled tubing equipment.
  • the coiled tubing speed pipe string provided by the present invention sends the coiled tubing speed pipe string to a predetermined position through the coiled tubing equipment, and the plugging device blocks the end of the second coiled tubing to prevent the liquid in the gas well or Other debris enters the coiled tubing speed column, and the liquid is pumped into the first coiled tubing.
  • the liquid pushes up the upper piston of the packer through the pressure transmitting hole, the lower piston is pushed down, and the upper piston squeezes the cartridge to seal.
  • the pump is filled with liquid to check the setting effect. After the test is completed, the liquid is pumped into the coiled tubing speed column. The coiled tubing speed is compressed in the column. After the pressure reaches a certain level, the plug is removed and the coiled tubing speed column is made.
  • the inner ring formed by the oil pipe and the second coiled tubing communicates with the hydraulic hand throwing hand, and the specific step of the hand throwing operation is to throw the ball into the first coiled tubing.
  • the top of the sleeve supports the ball, and the liquid is pumped into the first coiled tubing. After a certain pressure is applied, the first shearing nail is cut, the sliding sleeve is dropped, and the lock block disposed in the first hole of the lower joint is slid into the sliding sleeve. Hanger in the first groove The seated joint is separated from the lost hand joint to realize the lost hand operation. After the lost hand is completed, the first coiled tubing, the first coiled tubing joint and the hydraulic drop hand are proposed by the coiled tubing equipment, and the coiled tubing speed column is suspended at this time. The designated position of the gas well is put into production.
  • the device provided by the present scheme places the coiled tubing speed column in a designated position of the oil pipe, and the method of sealing the coiled tubing speed column at the wellhead in the prior art shortens the length of the coiled tubing used, thereby Solving the problem that the gas well problem caused by the unsatisfactory supply of coiled tubing cannot be solved in time.
  • the scheme also provides a method for discharging the gas in the coiled tubing speed column, realizing the anchorage of the coiled tubing speed in the tubing and the sealing of the loop between the coiled tubing and the tubing of the coiled tubing, shortening the continuous
  • the length of use of the oil pipe effectively solves the problem that the gas well problem cannot be solved in time due to the unsatisfactory supply of the coiled tubing speed.
  • FIG. 1 is a schematic structural view of a coiled tubing speed pipe string according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a hydraulic hand lost according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural view of an upper portion of a hanger according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a lower portion of a hanger according to an embodiment of the present invention.
  • the invention discloses a coiled tubing speed pipe string to shorten the use length of the coiled tubing and ensure timely solution of the gas well production problem.
  • the invention also discloses a method for draining gas from a coiled tubing speed column.
  • FIG. 1 is a schematic structural view of a coiled tubing speed pipe string according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a hydraulic hand throwing hand according to an embodiment of the present invention
  • FIG. 4 is a schematic structural view of the lower part of the hanger provided by the embodiment of the present invention.
  • a coiled tubing speed column comprising:
  • the hanger 4 is disposed below the hydraulic hand 3, and the hanger 4 includes:
  • a pressure transmitting hole is opened on the mandrel 41, and a liquid is pumped between the upper piston 45 and the lower piston 46 by the pressure transmitting hole;
  • a set top joint 42 disposed on the outer side of the mandrel 41 and threadedly coupled to the mandrel 41, the set top joint 42 and the hydraulic drop hand 3 are connected by the lock block 35;
  • the retaining ring 44, the retaining ring 44 is sleeved on the outer wall of the mandrel 41 and the upper end surface of the retaining ring 44 abuts against the lower end surface of the upper joint 42 of the seat;
  • the rubber cylinder 43 is disposed on the outer wall of the mandrel 41, and the upper end surface of the rubber cylinder 43 is opposite to the lower end surface of the retaining ring 44 to realize an annular space separation between the oil pipe and the second coiled oil pipe 5;
  • the upper piston 45 is disposed on the outer side of the mandrel 41 and abuts against the lower end surface of the rubber cylinder 43.
  • the inner wall of the upper piston 45 is a stepped surface, and the diameter of the upper step surface of the upper piston 45 is smaller than the diameter of the lower step surface, and the upper piston 45 is The upper step surface is located above the pressure transmission hole;
  • the lower piston 46 is disposed on the outer side of the mandrel 41.
  • the inner wall of the lower piston 46 is engaged with the outer wall of the mandrel 41.
  • the outer wall of the lower piston 46 is a stepped surface, and the diameter of the upper step surface of the lower piston 46 is smaller than the diameter of the lower end of the lower step surface.
  • the outer wall of the stepped surface of the lower piston 46 cooperates with the inner wall of the lower stepped surface of the upper piston 45, and the lower piston 46 and the upper piston 45 are fixed by the second shearing nail 47, and the lower piston 46 and the mandrel 41 pass the third shearing nail 48. Fixed, the upper step surface of the lower piston 46 is located below the pressure transmission hole;
  • the check ring 49 is disposed between the upper piston 45 and the lower piston 46, and the check ring 49 is located at the bottom of the inner wall of the lower step surface of the upper piston 45, and the check ring 49 is screwed to the upper piston 45.
  • the inner wall of the lower piston 46 is provided with an external thread that cooperates with the internal thread of the retaining ring 49 to prevent the upper piston 45 from sliding down, which affects the setting effect of the rubber cylinder 43;
  • a slip 50 disposed under the lower piston 46 and sleeved outside the mandrel 41 to anchor the second coiled tubing 5 in the oil pipe;
  • a second coiled tubing 5 connected to the lower seal joint 52, the second coiled tubing 5 and the set lower joint 52 are connected by a second coiled tubing joint 6, and the bottom end of the second coiled tubing 5 can be connected to the plug 8 .
  • a universal joint or a rotating short joint is disposed between the lower sealing joint 52 and the second continuous oil pipe joint 6, so that the lower sealing joint 52 can be conveniently connected with the second continuous oil pipe joint 6, and the lower joint 52 and the first joint can be set.
  • the connection of the two coiled tubing joints 6 to the universal joint or the rotating short joint is a threaded connection.
  • the coiled tubing is generally suspended at the wellhead, and the coiled tubing is suspended from the wellhead of the gas well.
  • the length of the coiled tubing is very long, and the domestic production of the coiled tubing has limited capacity, which cannot effectively satisfy the use of the coiled tubing, and the gas well problem cannot be solved. Timely and effective solution, if imported from abroad, the cost will increase accordingly.
  • the device provided by the present scheme places the second coiled tubing 5 at a designated position in the oil pipe through the hanger 4, that is, the length of the oil pipe between the gas well wellhead and the designated position is omitted, and the used oil pipe is shortened. The length saves certain materials and does not need to be imported from abroad, which reduces production costs.
  • the installation of the coiled tubing speed string provided by the present scheme also requires the suspension device of the coiled tubing speed column in the prior art, in order to feed the second coiled tubing 5 to the designated position of the gas well, The second coiled tubing is then seated in the tubing through the hanger 4 of the present scheme.
  • the device provided by the solution comprises: a first coiled tubing 1, a first coiled tubing joint 2, a hydraulic draining hand 3, a hanger 4, a second coiled tubing joint 6, a second coiled tubing 5 and a plug 8 which are sequentially connected Form a coiled tubing speed column.
  • the coiled tubing speed string is sent to the designated position in the downhole through the coiled tubing equipment of the coiled tubing.
  • the designated position mentioned here is the position of the coiled tubing speed column installed in the tubing according to the production requirements, and the blockage is blocked.
  • the device 8 blocks the end of the second coiled tubing 5 to prevent liquid or other debris in the tubing from entering the coiled tubing speed column;
  • the first coiled tubing 1 is pumped with liquid, and the liquid passes through the pressure transmitting hole on the mandrel 41 of the hanger 4 to enter between the upper piston 45 and the lower piston 46.
  • the second shear The nail 47 and the third shearing nail 48 are sheared, the upper piston 45 moves upward along the axis of the mandrel 41, and the upper piston 45 drives the retaining ring 49 to move the extrusion rubber barrel 43.
  • the rubber cylinder 43 seals the second coiled tubing 5 and
  • the annulus between the tubing, the lower piston 46 moves downward along the axis of the mandrel 41, the lower piston 46 presses the slip 50, the slip 50 achieves anchoring of the second coiled tubing, and the lower piston 46 moves to the designated position Thereafter, the thread on the lower piston 46 cooperates with the thread on the check ring 49 to prevent the upper piston 45 from moving downward, preventing the rubber cylinder 43 and the slip 50 from being unsealed, and the rubber cylinder 43 realizing the between the coiled tubing speed column and the oil pipe.
  • the encirclement of the annulus, the kava 50 realizes bidirectional anchoring of the coiled tubing speed pipe column at a designated position of the oil pipe;
  • the third step is to check whether the annulus isolation meets the requirements and avoid the production being affected by the poor isolation effect
  • the liquid is pumped into the coiled tubing speed column, the plug 8 is removed, and the coiled tubing speed column is connected with the loop formed by the second coiled tubing 5 and the tubing to facilitate the pitching operation and production in the subsequent steps. ;
  • the first coiled tubing, the first coiled tubing joint 2, and the hydraulic throwing hand 3 are proposed to be put into operation by the coiled tubing equipment.
  • the hydraulic hand lost 3 used in this program includes:
  • the hand joint 31 is lost, and the hand joint 31 is screwed to the first coiled tubing joint 2;
  • the sleeve is sleeved on the outer wall of the connector 31 and is connected to the hand of the connector 31.
  • the lower end of the lower hand connector 32 is provided with a first hole for receiving the lock block 35, and the upper joint 42 is provided with a first groove corresponding to the position of the first hole;
  • a sliding sleeve 33 that abuts against the lower end surface of the joint 31 and engages with the inner wall of the lower hand joint 32.
  • the upper end of the sliding sleeve 33 is provided with a tapered surface for supporting the ball, and the sliding sleeve 33 and the lower hand joint 32 pass through the first
  • the shearing nails 34 are connected, and the sliding sleeve 33 is provided with a first groove for receiving the locking block 35.
  • the first groove is located above the first hole, and the first groove is arranged to facilitate the subsequent recovery of the hanger 4.
  • the realization process of the specific lost operation is: casting the ball into the first coiled tubing 1, the upper end surface of the sliding sleeve 33 supporting the ball, and continuously pumping the liquid into the first coiled tubing 1, when the first coiled tubing 1 reaches a certain level.
  • the first shear pin 34 is sheared, and the sliding sleeve 33 slides under the action of the liquid pressure.
  • the lock block 35 The action of the axial force slides into the first recess, and the lock block 35 is disengaged from the first recess of the upper joint 42.
  • the lower joint 32 is separated from the upper joint 42 to realize the dislocation operation. .
  • the hanger 4 In order to achieve the unsealing of the hanger 4, it also includes:
  • the ball seat 9 is disposed between the mandrel 41 and the lower joint 52.
  • the upper end of the ball seat 9 is opposite to the lower end of the connecting barrel 7.
  • the inner wall of the ball seat 9 is provided with a tapered surface for supporting the ball, and the ball seat 9 is seated.
  • the sealing joint 52 is connected by a fourth shearing pin;
  • a third groove is disposed on the mandrel 41.
  • the third groove is provided with a lock ring 10, and the lock ring 10 is pressed by the ball seat 9;
  • the mandrel 41 is provided with a fourth groove, and the fourth groove is provided with a limiting ring 11 for preventing the cone 51 from slipping, and the limiting ring 11 is embedded in the fourth groove.
  • the specific unsealing process is as follows: the ball is thrown into the first coiled tubing 1, the inner wall of the ball seat 9 supports the ball, and the liquid is pumped into the first coiled tubing 1. After a certain pressure is reached, the fourth shearing nail is cut and set under the seal. The joint 52 loses the pressing and pushing action on the ball seat 9, the lock ring 10 is separated from the third groove, and the ball seat 9 falls under the action of the liquid pressure. At this time, the connecting barrel 7 loses the supporting action of the ball seat 9, and the connecting barrel 7 The seat and the lower joint are slid down, and the slip 50 and the rubber cylinder 43 are elastically contracted by themselves to realize unsealing.
  • the device can be used for two or more times, thereby reducing material loss.
  • the connecting barrel 7 and During the falling of the lower joint 52, the position of the retaining ring 11 is caught, ensuring that the second coiled tubing 5 does not fall into the well.
  • the connecting cylinder 7 is provided with a first central strip to ensure that it can be centered during the setting process of the rubber cylinder 43 and the slip 50, and does not occur. Offset.
  • the outer wall of the upper joint 42 is provided with a second central strip to ensure that the rubber cylinder 43 and the slip 50 can be centered during the setting process. There is no offset.
  • the outer wall of the slip 50 is provided with inverted teeth in two directions, and the two-way anchoring is realized after the sealing, so that the slip 50 does not move up and down.
  • the inner and outer sides of the retaining ring 49 are provided with serrated threads, and the internal threads on the retaining ring 49 are opposite to the serrated orientation of the external threads on the lower piston 46, so that the retaining ring 49 can be ensured.
  • the upper piston 45 is driven, the upper piston moves smoothly.
  • the internal thread on the retaining ring 49 abuts against the external thread on the lower piston 46, which can effectively prevent the upper piston 45 from moving downward and prevent the rubber cylinder 43 from being unsealed. To ensure the setting effect.
  • the slips 50 are provided with staggered blind grooves, and the blind grooves are evenly arranged on the slips 50, so that the slips 50 have better elasticity.
  • the solution also provides a method for draining gas from a coiled tubing speed column, comprising the steps of:
  • the coiled tubing speed string is sent to the designated position in the downhole through the coiled tubing equipment of the coiled tubing vehicle.
  • the designated position mentioned here is the position where the coiled tubing speed string is installed in the tubing according to the production requirements, the coiled tubing Speed column
  • the coiled tubing speed string includes: a first coiled tubing 1, a first coiled tubing joint 2, a hydraulic drainer 3, a hanger 4, a second coiled tubing joint 6, a second coiled tubing 5, and a plug 8;
  • the slip 50 will be the second coiled tubing Anchored at a designated location of the tubing, the process of enclosing the annulus of the cartridge 43 and the process of anchoring the second coiled tubing speed string by the slip 50 for liquid to enter through the pressure transmitting orifice on the mandrel 41 of the hanger 4
  • the upper piston 45 and the lower piston 46 Under the action of the liquid pressure, the second shearing nail 47 and the third shearing nail 48 are sheared, the upper piston 45 moves upward along the axis of the mandrel 41, and the upper piston 45 drives the backing.
  • the entrainment between the coiled tubing speed pipe column and the oil pipe, the kava 50 realizes bidirectional anchoring of the coiled tubing speed pipe column at a designated position of the oil pipe;
  • the first coiled tubing, the first coiled tubing joint 2, and the hydraulic drop hand 3 are proposed by the coiled tubing equipment to be put into operation.
  • the installation of the coiled tubing speed string provided by the present scheme also requires the suspension device of the coiled tubing speed column in the prior art, in order to feed the second coiled tubing 5 to the designated position of the gas well, and then the second continuous
  • the oil pipe is seated in the oil pipe through the hanger 4 in the present scheme, and the liquid discharging and gas collecting is realized through the coiled tubing speed pipe string, the gas shoe industry capacity is improved, and the gas well is restored to a stable production state.
  • the coiled tubing is generally suspended at the wellhead, and the coiled tubing is suspended from the wellhead of the gas well.
  • the length of the coiled tubing is very long, and the domestic production of the coiled tubing has limited capacity, which cannot effectively satisfy the use of the coiled tubing, and the gas well problem cannot be solved. Timely and effective solution, if imported from abroad, the cost will increase accordingly.
  • the device provided by the present scheme places the second coiled tubing 5 at a designated position in the oil pipe through the hanger 4, that is, the length of the oil pipe between the gas well wellhead and the designated position is omitted, and the used oil pipe is shortened. The length saves certain materials and does not need to be imported from abroad, which reduces production costs.

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Abstract

一种连续油管速度管柱，通过连续油管设备将连续油管速度管柱下送到预定位置，堵塞器（8）堵住第二连续油管（5）的末端，悬挂器（4）坐封，然后向油管与连续油管速度管柱组成的环空内泵注液体以检验坐封效果，打掉堵塞器（8），使连续油管速度管柱与油管和第二连续油管（5）形成的环空连通，液压丢手（3）对悬挂器（4）进行丢手操作，丢手完成后通过连续油管设备将第一连续油管（1）、第一连续油管接头（2）和液压丢手（3）提出，投产。该装置将连续油管速度管柱坐封在油管的指定位置，相对于现有技术中将连续油管速度管柱悬挂在井口的方式，缩短了使用的连续油管的长度，解决了由于连续油管供应不及时造成的气井问题不能及时解决的问题。

Description

一种连续油管速度管柱及排液采气的方法
本申请要求于2014年11月17日提交中国专利局、申请号为201410654052.0、发明名称为“一种连续油管速度管柱及排液采气的方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及石油工程技术领域，特别涉及一种连续油管速度管柱及排液采气的方法。
背景技术
气井进入开采的中后期，由于气层压力下降，低压力井内水量增加，气体携液能力变差，井筒积液增加，影响了气井的正常生产甚至出现停产现象，现有技术中一般采用速度管柱排液采气的技术以提升气体的携液能力，使气井恢复稳定生产的状态。
悬挂在油管内的连续油管速度管柱由连续油管、连续油管接头、液压丢手、速度管柱悬挂器和堵塞器等组成。常规连续油管速度管柱是将连续油管悬挂在井口，需要的连续油管长度较长，由于连续油管加工期限受国内加工水平的限制，加工速度较慢，导致气井的生产问题不能有效解决。
因此，如何缩短连续油管的使用长度，保证气井生产问题的及时解决，成为本领域技术人员亟待解决的技术问题。
发明内容
有鉴于此，本发明提供了一种连续油管速度管柱，以缩短连续油管的使用长度，保证气井生产问题的及时解决。本发明还提供了一种连续油管速度管柱 排液采气的方法。
为实现上述目的，本发明提供如下技术方案：
一种连续油管速度管柱，包括：
与连续油管设备连接的第一连续油管；
与所述第一连续油管通过第一连续油管接头连接的液压丢手；
设置在所述液压丢手下方的悬挂器，所述悬挂器包括：
心轴，所述心轴上开设有传压孔；
套设在所述心轴的外侧且与所述心轴螺纹连接的坐封上接头，所述坐封上接头与所述液压丢手通过锁块连接；
挡环，所述挡环套设在所述心轴的外壁且所述挡环的上端面与所述坐封上接头的下端面相抵；
胶筒，所述胶筒套设在所述心轴的外壁，且所述胶筒上端面与所述挡环的下端面相抵；
套设在所述心轴的外侧且与所述胶筒下端面相抵的上活塞，所述上活塞的内壁为台阶面，所述上活塞的上台阶面的直径较下台阶面的直径小，所述上活塞的上台阶面位于所述传压孔的上方；
套设在所述心轴外侧的下活塞，所述下活塞的内壁与所述心轴的外壁配合，所述下活塞的外壁为台阶面，且所述下活塞的上台阶面直径较下台阶面的下端直径小，所述下活塞上台阶面的外壁与所述上活塞的下台阶面的内壁配合，且所述下活塞与所述上活塞通过第二剪钉固定，所述下活塞与所述心轴通过第三剪钉固定，所述下活塞的上台阶面位于所述传压孔的下方；
止退环，所述止退环设置在所述上活塞与所述下活塞之间，且所述止退环位于所述上活塞的下台阶面的内壁底部，所述止退环与所述上活塞通过螺纹连接，所述下活塞的内壁设置有与所述止退环的内螺纹配合的外螺纹；
设置在所述下活塞下方且套设在所述心轴外侧的卡瓦；
设置在所述卡瓦下方且套设在所述心轴外侧的锥体；
套设在所述心轴的外壁且位于所述锥体下端连接的坐封下接头；
与所述坐封下接头连接的第二连续油管，所述第二连续油管与所述坐封下 接头通过第二连续油管接头连接，所述第二连续油管的底端能够与堵塞器连接。
优选的，在上述连续油管速度管柱中，所述液压丢手包括：
丢手上接头，所述丢手上接头与所述第一连续油管接头通过螺纹连接；
套设在所述丢手上接头的外壁且与所述丢手上接头通过螺纹连接的丢手下接头，所述丢手下接头的下端设置有用于承装所述锁块的第一孔，所述坐封上接头上设置有与所述第一孔位置对应的第一凹槽；
与所述丢手上接头的下端面相抵且与所述丢手下接头的内壁配合的滑套，所述滑套的上端设置有用于承托球的锥面，所述滑套与所述丢手下接头通过第一剪钉连接，所述滑套上设置有用于承装所述锁块的第一凹槽，所述第一凹槽位于所述第一孔的上方。
优选的，在上述连续油管速度管柱中，还包括：
连接筒，所述连接筒的上端与所述锥体的下端相抵，所述连接筒与所述坐封下接头螺纹连接；
设置在所述心轴与所述坐封下接头之间的球座，所述球座的上端与所述连接筒的下端相抵，所述球座的内壁设置有用于承托球的锥面，所述球座与所述坐封下接头通过第四剪钉连接；
设置在所述心轴上的第三凹槽，所述第三凹槽内设置有锁环，所述锁环通过所述球座压紧；
所述心轴上设置有第四凹槽，所述第四凹槽内设置有用于防止所述锥体滑落的限位环，所述限位环嵌入所述第四凹槽内。
优选的，在上述连续油管速度管柱中，所述连接筒上设置有第一扶正条。
优选的，在上述连续油管速度管柱中，所述坐封上接头的外壁设置有第二扶正条。
优选的，在上述连续油管速度管柱中，所述卡瓦的外壁上设置有上下两个方向的倒齿。
优选的，在上述连续油管速度管柱中，所述丢手上接头与所述丢手下接头通过螺纹紧固连接。
优选的，在上述连续油管速度管柱中，所述止退环的内外侧均设置有锯齿形螺纹。
优选的，在上述连续油管速度管柱中，所述卡瓦上设置有交错布置的盲槽，且所述盲槽均匀布置在卡瓦上。
一种连续油管速度管柱排液采气的方法，包括步骤：
1)通过连续油管车的连续油管设备将连续油管速度管柱送入井下指定位置，所述连续油管速度管柱为上述任意一项所述的连续油管速度管柱；
2)向第一连续油管内泵注液体，使所述胶筒封隔所述第二连续油管与所述油管之间的环空，所述卡瓦将所述第二连续油管锚定在所述油管的指定位置；
3)检验环空封隔是否达到要求；
4)向所述连续油管速度管柱内泵注液体，打掉所述堵塞器，将所述连续油管速度管柱与所述第二连续油管和所述油管形成的环空连通；
5)所述液压丢手对所述悬挂器进行丢手操作；
6)通过连续油管设备将第一连续油管、第一连续油管接头和液压丢手提出气井。
从上述技术方案可以看出，本发明提供的连续油管速度管柱，通过连续油管设备将连续油管速度管柱下送到预定位置，堵塞器堵住第二连续油管的末端，防止气井内液体或者其他杂物进入连续油管速度管柱内，向第一连续油管内泵注液体，液体通过传压孔将封隔器的上活塞向上推，下活塞向下顶，上活塞挤压胶筒封隔油管和连续油管速度管柱形成的环空，下活塞挤压卡瓦，将第二连续油管锚定在油管内，实现悬挂器的坐封，然后向油管与连续油管速度管柱的环空内泵注液体以检验坐封效果，检验完成后，向连续油管速度管柱内泵注液体，连续油管速度管柱内憋压，压力达到一定程度后，打掉堵塞器，使连续油管速度管柱与油管和第二连续油管形成的环空连通，液压丢手对悬挂器进行丢手操作，此时丢手操作的具体步骤为，向第一连续油管内投球，滑套的顶端承托球，向第一连续油管内泵注液体，憋起一定压力后，第一剪钉剪断，滑套下落，设置在丢手下接头的第一孔内的锁块滑入滑套的第一凹槽内，悬挂器 的坐封上接头与丢手下接头分离，实现丢手操作，丢手完成后通过连续油管设备将第一连续油管、第一连续油管接头和液压丢手提出，此时连续油管速度管柱悬挂在气井的指定位置，进行投产。本方案提供的装置，将连续油管速度管柱坐封在油管的指定位置，相对与现有技术中将连续油管速度管柱坐封在井口的方式，缩短了使用的连续油管的长度，从而可以在解决由于连续油管供应不及时造成的气井问题不能及时解决的问题。
本方案还提供了一种连续油管速度管柱排液采气的方法，实现连续油管速度管柱在油管内的锚定和连续油管速度管柱与油管之间环空的封隔，缩短了连续油管的使用长度，有效解决了由于连续油管速度管柱供应不及时造成的气井问题不能及时解决的问题。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的连续油管速度管柱的结构示意图；
图2为本发明实施例提供的液压丢手的结构示意图；
图3为本发明实施例提供的悬挂器的上部的结构示意图；
图4为本发明实施例提供的悬挂器的下部的结构示意图。
1、第一连续油管，2、第一连续油管接头，3、液压丢手，31、丢手上接头，32、丢手下接头，33、滑套，34、第一剪钉，35、锁块，4、悬挂器，41、心轴，42、坐封上接头，43、胶筒，44、挡环，45、上活塞，46、下活塞，47、第二剪钉，48、第三剪钉，49、止退环，5、第二连续油管，50、卡瓦，51、锥体，52、坐封下接头，6、第二连续油管接头，7、连接筒，8、堵塞器，9、球座，10、锁环，11、限位环。
具体实施方式
本发明公开了一种连续油管速度管柱，以缩短连续油管的使用长度，保证气井生产问题的及时解决。本发明还公开了一种连续油管速度管柱排液采气的方法。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1-图4，图1为本发明实施例提供的连续油管速度管柱的结构示意图；图2为本发明实施例提供的液压丢手的结构示意图；图3为本发明实施例提供的悬挂器的上部的结构示意图；图4为本发明实施例提供的悬挂器的下部的结构示意图。
一种连续油管速度管柱，包括：
与连续油管设备连接的第一连续油管1；
与第一连续油管1通过第一连续油管接头2连接的液压丢手3，液压丢手3实现悬挂器4与第一连续油管1的分离；
设置在液压丢手3下方的悬挂器4，悬挂器4包括：
心轴41，心轴41上开设有传压孔，由传压孔向上活塞45与下活塞46之间泵注液体；
套设在心轴41的外侧且与心轴41螺纹连接的坐封上接头42，坐封上接头42与液压丢手3通过锁块35连接；
挡环44，挡环44套设在心轴41的外壁且挡环44的上端面与坐封上接头42的下端面相抵；
胶筒43，胶筒43套设在心轴41的外壁，且胶筒43上端面与挡环44的下端面相抵，实现油管与第二连续油管5之间环空封隔；
套设在心轴41的外侧且与胶筒43下端面相抵的上活塞45，上活塞45的内壁为台阶面，上活塞45的上台阶面的直径较下台阶面的直径小，上活塞45的上台阶面位于传压孔的上方；
套设在心轴41外侧的下活塞46，下活塞46的内壁与心轴41的外壁配合，下活塞46的外壁为台阶面，且下活塞46的上台阶面直径较下台阶面的下端直径小，下活塞46上台阶面的外壁与上活塞45的下台阶面的内壁配合，且下活塞46与上活塞45通过第二剪钉47固定，下活塞46与心轴41通过第三剪钉48固定，下活塞46的上台阶面位于传压孔的下方；
止退环49，止退环49设置在上活塞45与下活塞46之间，且止退环49位于上活塞45的下台阶面的内壁底部，止退环49与上活塞45通过螺纹连接，下活塞46的内壁设置有与止退环49的内螺纹配合的外螺纹，防止上活塞45下滑，影响胶筒43的坐封效果；
设置在下活塞46下方且套设在心轴41外侧的卡瓦50，将第二连续油管5锚定在油管内；
设置在卡瓦50下方且套设在心轴41外侧的锥体51；
套设在心轴41的外壁且位于锥体51下端连接的坐封下接头52；
与坐封下接头52连接的第二连续油管5，第二连续油管5与坐封下接头52通过第二连续油管接头6连接，第二连续油管5的底端能够与堵塞器8连接。
优选的，坐封下接头52与第二连续油管接头6之间设置有万向节或者旋转短节，能够方便坐封下接头52与第二连续油管接头6连接，坐封下接头52和第二连续油管接头6与万向节或者旋转短节的连接为螺纹连接。
现有技术中一般是将连续油管悬挂在井口，从气井的井口处悬挂连续油管，连续油管的使用长度很长，国内生产连续油管的能力有限，不能有效满足连续油管的使用，造成气井问题不能及时有效的解决，如果采用国外进口，则成本相应升高。为了解决上述问题，本方案提供的装置通过悬挂器4将第二连续油管5坐封在油管内的指定位置，即省去了气井井口到指定位置之间的油管的长度，缩短了使用的油管的长度，节省了一定的材料，且不需要从国外进口，降低了生产成本。
本方案提供的连续油管速度管柱的安装也需要用到现有技术中的连续油管速度管柱的悬挂设备，目的是将第二连续油管5送入到气井的指定位置，然 后将第二连续油管通过本方案中的悬挂器4坐封在油管内。
本方案提供的装置包括：第一连续油管1、第一连续油管接头2、液压丢手3、悬挂器4、第二连续油管接头6、第二连续油管5和堵塞器8，上述装置依次连接形成连续油管速度管柱。
本方案提供的装置的具体使用步骤为：
第一步，通过连续油管车的连续油管设备将上述连续油管速度管柱送入井下指定位置，此处提到的指定位置为根据生产的需要连续油管速度管柱安装在油管内的位置，堵塞器8堵住第二连续油管5的末端，防止油管中的液体或者其他杂物进入连续油管速度管柱；
第二步，向第一连续油管1内泵注液体，液体通过悬挂器4的心轴41上的传压孔进入上活塞45和下活塞46之间，在液体压力的作用下，第二剪钉47和第三剪钉48被剪断，上活塞45沿着心轴41的轴线向上运动，上活塞45带动止退环49运动挤压胶筒43，胶筒43封隔第二连续油管5与油管之间的环空，下活塞46沿着心轴41的轴线向下运动，下活塞46挤压卡瓦50，卡瓦50实现对第二连续油管的锚定，下活塞46运动到指定位置后，下活塞46上的螺纹与止退环49上的螺纹配合，防止上活塞45向下运动，阻止胶筒43和卡瓦50解封，胶筒43实现连续油管速度管柱与油管之间环空的封隔，卡瓦50实现将连续油管速度管柱双向锚定在油管的指定位置；
第三步，检验环空封隔是否达到要求，避免因为封隔效果不好影响生产；
第四步，向连续油管速度管柱内泵注液体，打掉堵塞器8，将连续油管速度管柱与第二连续油管5和油管形成的环空连通，方便后续步骤中的投球操作和生产；
第五步，液压丢手3对悬挂器4进行丢手操作；
第六步，通过连续油管设备将第一连续油管、第一连续油管接头2和液压丢手3提出气井，进行投产。
本方案采用的液压丢手3包括：
丢手上接头31，丢手上接头31与第一连续油管接头2通过螺纹连接；
套设在丢手上接头31的外壁且与丢手上接头31通过螺纹连接的丢手下接 头32，丢手下接头32的下端设置有用于承装锁块35的第一孔，坐封上接头42上设置有与第一孔位置对应的第一凹槽；
与丢手上接头31的下端面相抵且与丢手下接头32的内壁配合的滑套33，滑套33的上端设置有用于承托球的锥面，滑套33与丢手下接头32通过第一剪钉34连接，滑套33上设置有用于承装锁块35的第一凹槽，第一凹槽位于第一孔的上方，第一凹槽的设置能够方便后续对悬挂器4的回收。
具体丢手操作的实现过程为：向第一连续油管1内投球，滑套33的上端面承托球，继续向第一连续油管1内泵注液体，当第一连续油管1内达到一定的液体压力后，第一剪钉34被剪断，滑套33在液体压力的作用下下滑，当滑套33上的第一凹槽与丢手下接头32上的第一孔位置对应时，锁块35在轴向力的作用下滑入第一凹槽内，实现锁块35从坐封上接头42的第一凹槽内脱出，此时丢手下接头32与坐封上接头42分离，实现丢手操作。
为了实现悬挂器4的解封，还包括：
连接筒7，连接筒7的上端与锥体51的下端相抵，连接筒7与坐封下接头52螺纹连接；
设置在心轴41与坐封下接头52之间的球座9，球座9的上端与连接筒7的下端相抵，球座9的内壁设置有用于承托球的锥面，球座9与坐封下接头52通过第四剪钉连接；
设置在心轴41上的第三凹槽，第三凹槽内设置有锁环10，锁环10通过球座9压紧；
心轴41上设置有第四凹槽，第四凹槽内设置有用于防止锥体51滑落的限位环11，限位环11嵌入第四凹槽内。
具体的解封过程为：向第一连续油管1内投球，球座9的内壁承托球，向第一连续油管1内泵注液体，达到一定压力后，第四剪钉剪断，坐封下接头52对球座9失去挤压推靠作用，锁环10与第三凹槽分离，球座9在液体压力的作用下下落，此时连接筒7失去球座9的支撑作用，连接筒7和坐封下接头下滑，卡瓦50和胶筒43依靠自身弹性收缩，实现解封，悬挂器4解封之后，装置可以进行二次或者多次利用，降低了材料损耗。在锥体51、连接筒7和 坐封下接头52的下落过程中会卡在限位环11的位置，保证第二连续油管5不会落入井内。
为了保证在胶筒43的坐封效果和卡瓦50的锚定效果，连接筒7上设置有第一扶正条，保证在胶筒43和卡瓦50的坐封过程中能够居中，不会发生偏移。
为了进一步保证胶筒43的坐封效果和卡瓦50的锚定效果，坐封上接头42的外壁设置有第二扶正条，保证在胶筒43和卡瓦50的坐封过程中能够居中，不会发生偏移。
为了保证卡瓦50的锚定的效果，卡瓦50的外壁上设置有上下两个方向的倒齿，坐封后实现双向锚定，保证卡瓦50不会上下运动。
为了保证坐封效果，止退环49的内外侧均设置有锯齿形螺纹，止退环49上的内螺纹与下活塞46上的外螺纹的锯齿状的朝向相反，能够保证止退环49能够在上活塞45的带动下顺利向上运动，坐封完成后，止退环49上的内螺纹与下活塞46上的外螺纹相抵，可以有效防止上活塞45向下运动，防止胶筒43解封，保证坐封效果。
为了保证卡瓦50的弹性，卡瓦50上设置有交错布置的盲槽，且盲槽均匀布置在卡瓦50上，使卡瓦50具有较好的弹性。
本方案还提供了一种连续油管速度管柱排液采气的方法，包括步骤：
1)通过连续油管车的连续油管设备将连续油管速度管柱送入井下指定位置，此处提到的指定位置为根据生产的需要连续油管速度管柱安装在油管内的位置，所述连续油管速度管柱上述任意一项所述的连续油管速度管柱。连续油管速度管柱包括：第一连续油管1、第一连续油管接头2、液压丢手3、悬挂器4、第二连续油管接头6、第二连续油管5和堵塞器8；
2)向第一连续油管1内泵注液体，使所述胶筒43封隔所述第二连续油管5与所述油管之间的环空，所述卡瓦50将所述第二连续油管锚定在所述油管的指定位置，胶筒43封隔环空的过程和卡瓦50锚定第二连续油管速度管柱的过程为液体通过悬挂器4的心轴41上的传压孔进入上活塞45和下活塞46之间，在液体压力的作用下，第二剪钉47和第三剪钉48被剪断，上活塞45沿着心轴41的轴线向上运动，上活塞45带动止退环49运动挤压胶筒43，胶筒 43封隔第二连续油管5与油管之间的环空，下活塞46沿着心轴41的轴线向下运动，下活塞46挤压卡瓦50，卡瓦50实现对第二连续油管的锚定，下活塞46运动到指定位置后，下活塞46上的螺纹与止退环49上的螺纹配合，防止上活塞45向下运动，阻止胶筒43和卡瓦50解封，胶筒43实现连续油管速度管柱与油管之间环空的封隔，卡瓦50实现将连续油管速度管柱双向锚定在油管的指定位置；
3)检验环空封隔是否达到要求，避免因为封隔效果不好影响生产；
4)向所述连续油管速度管柱内泵注液体，打掉所述堵塞器8，将所述连续油管速度管柱与所述第二连续油管5和所述油管形成的环空连通，方便后续步骤中的投球操作和生产；
5)所述液压丢手3对所述悬挂器4进行丢手操作；
6)通过连续油管设备将第一连续油管、第一连续油管接头2和液压丢手3提出气井，进行投产。
本方案提供的连续油管速度管柱的安装也需要用到现有技术中的连续油管速度管柱的悬挂设备，目的是将第二连续油管5送入到气井的指定位置，然后将第二连续油管通过本方案中的悬挂器4坐封在油管内，通过连续油管速度管柱实现排液采气，提高气体的鞋业能力，使气井恢复稳定生产的状态。
现有技术中一般是将连续油管悬挂在井口，从气井的井口处悬挂连续油管，连续油管的使用长度很长，国内生产连续油管的能力有限，不能有效满足连续油管的使用，造成气井问题不能及时有效的解决，如果采用国外进口，则成本相应升高。为了解决上述问题，本方案提供的装置通过悬挂器4将第二连续油管5坐封在油管内的指定位置，即省去了气井井口到指定位置之间的油管的长度，缩短了使用的油管的长度，节省了一定的材料，且不需要从国外进口，降低了生产成本。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而 是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (10)

  1. 一种连续油管速度管柱，其特征在于，包括：
    与连续油管设备连接的第一连续油管(1)；
    与所述第一连续油管(1)通过第一连续油管接头(2)连接的液压丢手(3)；
    设置在所述液压丢手(3)下方的悬挂器(4)，所述悬挂器(4)包括：
    心轴(41)，所述心轴(41)上开设有传压孔；
    套设在所述心轴(41)的外侧且与所述心轴(41)螺纹连接的坐封上接头(42)，所述坐封上接头(42)与所述液压丢手(3)通过锁块(35)连接；
    挡环(44)，所述挡环(44)套设在所述心轴(41)的外壁且所述挡环(44)的上端面与所述坐封上接头(42)的下端面相抵；
    胶筒(43)，所述胶筒(43)套设在所述心轴(41)的外壁，且所述胶筒(43)上端面与所述挡环(44)的下端面相抵；
    套设在所述心轴(41)的外侧且与所述胶筒(43)下端面相抵的上活塞(45)，所述上活塞(45)的内壁为台阶面，所述上活塞(45)的上台阶面的直径较下台阶面的直径小，所述上活塞(45)的上台阶面位于所述传压孔的上方；
    套设在所述心轴(41)外侧的下活塞(46)，所述下活塞(46)的内壁与所述心轴(41)的外壁配合，所述下活塞(46)的外壁为台阶面，且所述下活塞(46)的上台阶面直径较下台阶面的下端直径小，所述下活塞(46)上台阶面的外壁与所述上活塞(45)的下台阶面的内壁配合，且所述下活塞(46)与所述上活塞(45)通过第二剪钉(47)固定，所述下活塞(46)与所述心轴(41)通过第三剪钉(48)固定，所述下活塞(46)的上台阶面位于所述传压孔的下方；
    止退环(49)，所述止退环(49)设置在所述上活塞(45)与所述下活塞(46)之间，且所述止退环(49)位于所述上活塞(45)的下台阶面的内壁底部，所述止退环(49)与所述上活塞(45)通过螺纹连接，所述下活塞(46)的内壁设置有与所述止退环(49)的内螺纹配合的外螺纹；
    设置在所述下活塞(46)下方且套设在所述心轴(41)外侧的卡瓦(50)；
    设置在所述卡瓦(50)下方且套设在所述心轴(41)外侧的锥体(51)；
    套设在所述心轴(41)的外壁且位于所述锥体(51)下端连接的坐封下接头(52)；
    与所述坐封下接头(52)连接的第二连续油管(5)，所述第二连续油管(5)与所述坐封下接头(52)通过第二连续油管接头(6)连接，所述第二连续油管(5)的底端能够与堵塞器(8)连接。
  2. 根据权利要求1所述的连续油管速度管柱，其特征在于，所述液压丢手(3)包括：
    丢手上接头(31)，所述丢手上接头(31)与所述第一连续油管接头(2)通过螺纹连接；
    套设在所述丢手上接头(31)的外壁且与所述丢手上接头(31)通过螺纹连接的丢手下接头(32)，所述丢手下接头(32)的下端设置有用于承装所述锁块(35)的第一孔，所述坐封上接头(42)上设置有与所述第一孔位置对应的第一凹槽；
    与所述丢手上接头(31)的下端面相抵且与所述丢手下接头(32)的内壁配合的滑套(33)，所述滑套(33)的上端设置有用于承托球的锥面，所述滑套(33)与所述丢手下接头(32)通过第一剪钉(34)连接，所述滑套(33)上设置有用于承装所述锁块(35)的第一凹槽，所述第一凹槽位于所述第一孔的上方。
  3. 根据权利要求1所述的连续油管速度管柱，其特征在于，还包括：
    连接筒(7)，所述连接筒(7)的上端与所述锥体(51)的下端相抵，所述连接筒(7)与所述坐封下接头(52)螺纹连接；
    设置在所述心轴(41)与所述坐封下接头(52)之间的球座(9)，所述球座(9)的上端与所述连接筒(7)的下端相抵，所述球座(9)的内壁设置有用于承托球的锥面，所述球座(9)与所述坐封下接头(52)通过第四剪钉连接；
    设置在所述心轴(41)上的第三凹槽，所述第三凹槽内设置有锁环(10)，所述锁环(10)通过所述球座(9)压紧；
    所述心轴(41)上设置有第四凹槽，所述第四凹槽内设置有用于防止所述 锥体(51)滑落的限位环(11)，所述限位环(11)嵌入所述第四凹槽内。
  4. 根据权利要求3所述的连续油管速度管柱，其特征在于，所述连接筒(7)上设置有第一扶正条。
  5. 根据权利要求1所述的连续油管速度管柱，其特征在于，所述坐封上接头(42)的外壁设置有第二扶正条。
  6. 根据权利要求1所述的连续油管速度管柱，其特征在于，所述卡瓦(50)的外壁上设置有上下两个方向的倒齿。
  7. 根据权利要求1所述的连续油管速度管柱，其特征在于，所述丢手上接头(31)与所述丢手下接头(32)通过螺纹紧固连接。
  8. 根据权利要求1所述的连续油管速度管柱，其特征在于，所述止退环(46)的内外侧均设置有锯齿形螺纹。
  9. 根据权利要求1所述的连续油管速度管柱，其特征在于，所述卡瓦(50)上设置有交错布置的盲槽，且所述盲槽均匀布置在所述卡瓦(50)上。
  10. 一种连续油管速度管柱排液采气的方法，其特征在于，包括步骤：
    1)通过连续油管车的连续油管设备将连续油管速度管柱送入井下指定位置，所述连续油管速度管柱为权利要求1-9中任意一项所述的连续油管速度管柱；
    2)向第一连续油管(1)内泵注液体，使所述胶筒(43)封隔所述第二连续油管(5)与所述油管之间的环空，所述卡瓦(50)将所述第二连续油管锚定在所述油管的指定位置；
    3)检验环空封隔是否达到要求；
    4)向所述连续油管速度管柱内泵注液体，打掉所述堵塞器(8)，将所述连续油管速度管柱与所述第二连续油管(5)和所述油管形成的环空连通；
    5)所述液压丢手(3)对所述悬挂器(4)进行丢手操作；
    6)通过连续油管设备将第一连续油管、第一连续油管接头(2)和液压丢手(3)提出气井。
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