CN109306856A - A kind of multistage takes liquid device and method - Google Patents
A kind of multistage takes liquid device and method Download PDFInfo
- Publication number
- CN109306856A CN109306856A CN201710619753.4A CN201710619753A CN109306856A CN 109306856 A CN109306856 A CN 109306856A CN 201710619753 A CN201710619753 A CN 201710619753A CN 109306856 A CN109306856 A CN 109306856A
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- China
- Prior art keywords
- liquid
- central tube
- spring
- sleeved
- major diameter
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Abstract
The invention discloses a kind of multistages to take liquid device and method, belongs to water pumping gas production field.The multistage takes liquid device and includes: the flow string being arranged in pit shaft and multiple take liquid part.Multiple liquid parts of taking are along the inner wall that axial direction is sequentially fixed on flow string, and every two adjacent take between liquid part has default spacing, it is upper to take natural gas and liquid of the liquid part for making stratum output, and prevent liquid reflux.The invention avoids the natural gas wells during production operations, and the liquid of stratum output flows back in flow string, fundamentally solves the problems, such as wellbore effusion, improves the gas production of the natural gas well, reduces the operating cost generated by wellbore effusion.Liquid part is taken by the way that setting is multiple, and make multiple liquid parts of taking along the inner wall that axial direction is sequentially fixed on flow string, and every two adjacent take between liquid part has default spacing, provides the space that falls off for liquid, improves the discharge efficiency of the liquid during production operations.
Description
Technical field
The present invention relates to drainage gas recovery field, in particular to a kind of multistage takes liquid device and method.
Background technique
During natural gas well production operation, the natural gas and liquid (more referring to water) of stratum output exist in flowing to be slided
De- effect.When the gas production of the natural gas well is higher than critical liquid carry over, the liquid of stratum output passes through the life being arranged in pit shaft
It produces tubing string and pit shaft is carried out by the air-flow of natural gas；When the gas production of the natural gas well is lower than critical liquid carry over, a part of liquid
Pit shaft can be carried out by the air-flow of natural gas, and another part liquid can be then slid along the inner wall of flow string to shaft bottom, formed
Wellbore effusion influences the normal production operation of the natural gas well.Therefore, solve the problems, such as that wellbore effusion is very necessary.
The method that the prior art solves the problems, such as wellbore effusion include: gas lift liquid drainage method, foams drain method, mechanical fluid-discharge therapy and
Ultrasonic wave fluid-discharge therapy.Under normal circumstances, according to the practical hydrops situation in live pit shaft, middle selection is suitable square from the above
Method, to solve the problems, such as wellbore effusion.
The inventor finds that the existing technology has at least the following problems:
The method that the prior art provides, which belongs to, there is the row's of the helping measure implemented after wellbore effusion problem for the natural gas well,
It can not fundamentally solve the problems, such as wellbore effusion.When wellbore effusion is discharged, after stopping the row's of helping measure, it is easy again in pit shaft
Hydrops is generated, to influence the normal production operation of the natural gas well.
Summary of the invention
In order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of multistages to take liquid device and method.Specific skill
Art scheme is as follows:
In a first aspect, the embodiment of the invention provides a kind of multistages to take liquid device, comprising: the production pipe in pit shaft is arranged in
Column；
The multistage takes liquid device further include: and it is multiple to take liquid part, the inner wall of the flow string is sequentially fixed on along axial direction
On, and every two adjacent described take between liquid part has default spacing, the liquid part of taking is for making the natural gas of stratum output
It is upper with liquid, and prevent the liquid reflux.
Specifically, preferably, it is described take liquid part include: path central tube, be sleeved on it is big on the path central tube
Diameter central tube is formed with annular space between the path central tube and the major diameter central tube；
The upper end of the annular space is inserted into top connection, lower end, and with the path central tube and the major diameter central tube
It is connected by cutting member；
Ball-and-seat is connected to the lower end of the path central tube；
Fishing head is sleeved on the top of the major diameter central tube；
Slips is sleeved on the major diameter central tube and connect with the fishing head.
Specifically, preferably, described take liquid part further include: be sleeved on the packing element bracket of major diameter central tube lower part；
Outer sleeve, upper end are connect with the lower end of the packing element bracket；
Spring spool, upper end are sleeved on the lower end of the major diameter central tube, and are located at the major diameter central tube and described outer
Between sleeve, and upper surface and the lower end surface of the packing element bracket offset；
Spring pressure pipe, upper surface and the lower end surface of the ball-and-seat offset, and the lower part of top and the spring spool cooperates
Spring cavity is formed, and the spring pressure pipe can be moved up and down along the side wall of the spring spool；
Spring is sleeved in the spring pressure pipe, and is located in the spring cavity；
Rubber tube seat is sleeved on the upper end of the packing element bracket；
Upper packing element is sleeved on the major diameter central tube, and lower end surface and the upper surface of the rubber tube seat offset；
Lower rubber cylinder is sleeved on the packing element bracket, and upper surface and the lower end surface of the rubber tube seat offset；
Lower contact is sleeved on the lower part of the spring pressure pipe, and connect with the lower end of the outer sleeve, the spring pressure pipe
The lower contact can be passed through up or down；
Connector is connect with the lower end of the spring pressure pipe, and the spring pressure pipe drive under with the lower contact
Lower end surface offsets or separates.
Specifically, preferably, described take liquid part further include: the first locating part is arranged on the major diameter central tube, uses
It is moved down in limiting the upper packing element.
Specifically, preferably, the ball-and-seat includes: valve ball cap, valve ball, ball seat and throttling gas nozzle；
The valve ball cap sleeve is connected on the ball seat with the path central tube；
The ball seat is provided with the centre bore being connected to the path central tube, and lower end surface and the spring pressure pipe is upper
End face offsets；
The valve ball is located at the top of the ball seat, is used to open or blocks the centre bore；
The throttling gas nozzle is connect with the lower end of the centre bore.
Specifically, preferably, described take liquid part further include: upper end opening and side wall are in mesh-structured outer barrel, on
End is connect with the lower end of the lower contact；
Upper end opening and side wall are in mesh-structured inner cylinder, are set in the outer barrel.
Specifically, preferably, described take liquid part further include: the top of the spring pressure pipe is arranged in the second locating part,
And it is located at the top of the spring cavity；
Limit card slot compatible with second locating part is provided on the inner wall of the spring spool；
Second locating part limits the telescopic spring in the spring cavity for being stuck in the limit card slot.
Specifically, preferably, described take liquid part further include: stop collar；
The stop collar includes: inner ring body, is sleeved on the outer ring body on the inner ring body, the inner ring by multiple blocks
Body is sleeved on the major diameter central tube；
It is formed between the inner ring body, the outer ring body and multiple blocks multiple for across the slips top
Arc space.
Specifically, preferably, being provided with seal groove on the outer wall of path central tube lower part；
Sealing ring is provided in each seal groove.
Second aspect, the embodiment of the invention provides the sides that the liquid of stratum output is carried out to pit shaft using above-mentioned apparatus
Method, which comprises
Flow string is arranged in pit shaft, and takes liquid part by multiple and is sequentially fixed in the flow string along axial direction
On wall, production operation is carried out；
The natural gas and liquid of stratum output enter the flow string and sequentially flow through multiple in the flow string
It is described to take liquid part, utilize multiple liquid refluxes taken liquid part and prevent from flowing through；
When the natural gas and liquid of stratum output be again introduced into the flow string and pass through described in take liquid part when, quilt
The liquid for taking the retention of liquid part is with the natural gas and the movement of the well head in the same direction of liquid one until discharge pit shaft, completes production and make
Industry.
Technical solution provided in an embodiment of the present invention has the benefit that
Multistage provided in an embodiment of the present invention takes liquid device, takes liquid part by setting, avoids the natural gas well and makees in production
During industry, the liquid of stratum output flows back in flow string, so that dropping to shaft bottom generates wellbore effusion, from basic
On solve the problems, such as wellbore effusion, improve the gas production of the natural gas well, at the same reduce because wellbore effusion generate operation
Expense.Liquid part is taken by the way that setting is multiple, and makes multiple liquid parts of taking along the inner wall that axial direction is sequentially fixed on flow string, and every two
A adjacent taking between liquid part has default spacing, provides the space that falls off for liquid, improves the liquid in production operation
Discharge efficiency in journey.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram that multistage provided in an embodiment of the present invention takes liquid device；
Fig. 2 is the diagrammatic cross-section provided in an embodiment of the present invention for taking liquid part.
Appended drawing reference respectively indicates:
1 flow string,
2 take liquid part,
201 path central tubes,
2011 seal grooves,
202 major diameter central tubes,
203 top connections,
204 cutting members,
205 ball-and-seats,
2051 valve ball caps,
2052 valve balls,
2053 ball seats,
2054 throttling gas nozzles,
206 fishing heads,
207 slips,
208 packing element brackets,
209 outer sleeves,
210 spring spools,
211 spring pressure pipes,
212 springs,
213 rubber tube seats,
Packing element on 214,
215 lower rubber cylinders,
216 lower contacts,
217 connectors,
218 first locating parts,
219 outer barreies,
220 inner cylinders,
221 second locating parts,
222 stop collars.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
In a first aspect, the embodiment of the invention provides a kind of multistages to take liquid device, as shown in Fig. 1, which takes liquid dress
It sets and includes: flow string 1 and multiple take liquid part 2.Wherein, flow string 1 is arranged in pit shaft, and multiple liquid parts 2 of taking are along axial suitable
On the secondary inner wall for being fixed on flow string 1, and every two adjacent take between liquid part 2 has default spacing, takes liquid part 2 for making
The natural gas and liquid of stratum output are upper, and prevent the liquid reflux.
Multistage provided in an embodiment of the present invention takes liquid device when carrying out production operation, and the natural gas that stratum generates carries liquid
The bottom end of body from flow string 1 enters flow string 1, and sequentially passes through multiple liquid parts 2 of taking and move to well head.In the process,
When the gas production of natural gas is higher than critical liquid carry over, the liquid of stratum output directly carries out pit shaft by natural gas.When natural
When the gas production of gas is lower than critical liquid carry over, a part of liquid can be carried out pit shaft by natural gas, and another part liquid then can
Stay in two adjacent take between liquid part 2；When the natural gas and liquid of stratum output are again introduced into flow string 1 and take by this
When liquid part 2, natural gas, which can then carry, stays in the two adjacent well head in the same direction of liquid one movements taken between liquid part 2.And so on,
When natural gas and liquid continue to move to well head, if the gas production of natural gas is lower than critical liquid carry over, part is also had
Liquid be left on it is two adjacent take between liquid part 2, the natural gas and liquid to stratum output are again introduced into flow string 1 and pass through
When crossing this and taking liquid part 2, natural gas, which can then carry, stays in the two adjacent well heads in the same direction of liquid one movements taken between liquid part 2, into
And realize multistage and take liquid, complete the production operation of the natural gas well.
Multistage provided in an embodiment of the present invention takes liquid device, takes liquid part 2 by setting, avoids the natural gas well and makees in production
During industry, the liquid of stratum output flows back in flow string 1, so that dropping to shaft bottom generates wellbore effusion, from root
It solves the problems, such as wellbore effusion on this, improves the gas production of the natural gas well, while reducing the work generated by wellbore effusion
Industry expense.Liquid part 2 is taken by the way that setting is multiple, and is fixed on multiple liquid parts 2 of taking sequentially on the inner wall of flow string 1 along axial direction,
And every two adjacent take between liquid part 2 has default spacing, provides the space that falls off for liquid, realizes that multistage takes liquid, improves
The discharge efficiency of the liquid during production operations.
In embodiments of the present invention, as shown in Fig. 2, take liquid part 2 include: path central tube 201, major diameter central tube 202,
Top connection 203, cutting member 204, ball-and-seat 205, fishing head 206, slips 207.Wherein, major diameter central tube 202 is sleeved on path
On central tube 201, annular space is formed between the path central tube 201 and major diameter central tube 202.The lower end of top connection 203
It is inserted into the upper end of the annular space, and is connect with path central tube 201 and major diameter central tube 202 by cutting member 204.Ball-and-seat
205 are connected to the lower end of path central tube 201.Fishing head 206 is sleeved on the top of major diameter central tube 202, and slips 207 is sleeved on
It is connect on major diameter central tube 202 and with fishing head 206.
When that will take liquid part 2 and be fixed on the inner wall of flow string 1, it is connect using steel wire with the upper end of top connection 203, it will
The predeterminated position in flow string 1 of liquid part 2 is taken, this is then above mentioned and takes liquid part 2, slips 207 is made to be anchored on the interior of flow string 1
On wall, liquid part 2 is taken at this point, continuing above to mention this, cutting member 204 is broken, steel wire and top connection 203 is proposed, that is, completes to take liquid part 2
Fixation in flow string 1.When the natural gas well is when carrying out production operation, the natural gas and liquid of stratum output produce pipe certainly
The lower end of column 1 enters flow string 1, and continues after flowing through the ball-and-seat 205 taken on liquid part 2, path central tube 201 to well head
Movement.When the tolerance of natural gas is higher than critical liquid carry over, which is directly carried by natural gas to ground.When the gas of natural gas
When amount is higher than critical liquid carry over, a part of liquid can be carried out pit shaft by natural gas, and another part liquid can then stay in single stream
The top of valve 205.Fishing head 206 is caught and above mentioned using fishing tool after operation, makes slips 207 in flow string 1
Inner wall on disanchor, and then will take liquid part 2 proposition.
By the way that path central tube 201 is arranged, the flow channels for making natural gas and liquid communication are formd.Pass through setting
Major diameter central tube 202, and make to form annular space between path central tube 201 and major diameter central tube 202, it is mentioned for top connection 203
Installation site is supplied.By setting top connection 203 and cutting member 204, realizes steel wire and take the connection between liquid part 2, so as to
Liquid part 2 is taken above to mention or transfer in flow string 1, also, on the inner wall that slips 207 is anchored on flow string 1 after, break
The fixation for taking liquid part 2 in flow string 1 can be realized in cutting member 204, easy to operate, convenient and efficient.By the way that ball-and-seat is arranged
205, ensure that liquid can only one-way flow, avoid liquid from flowing back during moving to well head, to generate pit shaft
Hydrops.By the way that fishing head 206 is arranged, not only convenient for proposing to take liquid part 2 after operation, but also slips 207 is realized big
Being arranged on diameter central tube 202.By the way that slips 207 is arranged, it ensure that taking liquid part 2 can be clamped on the inner wall of flow string 1.
Wherein, cutting member 204 can be shear pin, can not only realize top connection 203 and path central tube 201 and greatly
Connection between diameter central tube 202, and the shear pin is small in size, and light weight, convenient for breaking, and cost is relatively low.
For the structure of top connection 203, as long as can guarantee that the upper end is connect with steel wire, path central tube is inserted into lower part
Annular space between 201 and major diameter central tube 202.Specifically, the lower part of top connection 203 can be pipe structure, and
It is provided with the first pin hole for being inserted into cutting member 204 on side wall, is provided on the side wall of major diameter central tube 202 and the first pin
The second opposite pin hole of nail hole, path central tube 201 offer opposite with the first pin hole and the second pin hole from top to bottom
Strip groove.
Fishing head 206 is in pipe structure, is provided with multiple strip-shaped holes on the side wall of lower part.
Slips 207 includes multiple slips ontologies, which is arc plate body structure, and the top of the arc plate body is along diameter
To eave tile is provided with outward, the outer wall of lower part is provided with multiple slip inserts being serrated, and the inner wall of lower part is outside from top to bottom
Inclination and shape are adapted (outside being provided on the outer wall of major diameter central tube 202 without leave with the shape of 202 outer wall of major diameter central tube
The convex block being gradually increased under above, slips ontology can slide on the convex block).
Connection type between fishing head 206 and slips 207 can be snapping, i.e. the eave tile on arc plate body top, which is caught in, to be beaten
In the strip-shaped hole for fishing out head 206.
In order to realize the limit to slips 207, slips 207 is avoided to be detached from major diameter central tube during well head movement
202.As shown in Fig. 2, liquid part 2 is taken further include: stop collar 222.The stop collar 222 includes: inner ring body, by multiple block sets
Outer ring body on inner ring body, inner ring body are sleeved on major diameter central tube 202；Between inner ring body, outer ring body and multiple blocks
It is formed with multiple arc spaces for across 207 top of slips.
Wherein, block includes: upper curved baffle and arc lower baffle, and curved baffle and arc lower baffle are relatively solid on this
It is scheduled on the outer wall of inner ring body, and there is spacing between two curved baffles.It, should in order to improve the limit effect of stop collar 222
The length of spacing and the thickness of outer ring body are equal.
The arc of arc space is wider than or wide equal to the arc of slips body upper part, and the arc for being less than slips body lower part is wide.
Also, in order to make inner ring body connect fastening with major diameter central tube 202, the two can be connected in a welding manner.
As shown in Fig. 2, ball-and-seat 205 includes: valve ball cap 2051, valve ball 2052, ball seat 2053 and throttling gas nozzle 2054.
Valve ball cap 2051 is sleeved on ball seat 2053, and is connected with path central tube 201.Ball seat 2053 is provided with and path central tube
The centre bore of 201 connections, and lower end surface and the upper surface of spring pressure pipe 211 offset.Valve ball 2052 is located at the top of ball seat 2053,
It is used to open or blocks centre bore.Throttling gas nozzle 2054 is connect with the lower end of centre bore.
After the lower end of natural gas and liquid from flow string 1 enters flow string 1, the two is flowed by throttling gas nozzle 2054
In the centre bore for entering ball seat 2053, and valve ball 2052 being opened upwards, and then opening centre bore, natural gas and liquid is made to pass through valve ball
Continue to move to well head after cap 2051.
By the way that valve ball cap 2051 is arranged, the connection of path central tube 201 Yu ball-and-seat 205 is realized.By the way that valve ball is arranged
2052 and ball seat 2053, and valve ball 2052 is made to be located at the top of ball seat 2053, it is easy to implement the opening or closure to centre bore.It is logical
Setting throttling gas nozzle 2054 is crossed, and envoy's gas mouth 2054 is connect with the lower end of centre bore, not only may be implemented to natural gas
With the reducing pressure by regulating flow of liquid, but also the flow of natural gas and liquid can control.
Wherein, valve ball cap 2051 is the tubular structure that Open Side Down, is provided in the middle part of upper end opposite with valve ball 2052
Valve ball hole (diameter that the diameter in the valve ball hole is less than valve ball 2052), and multiple flowing holes are provided with centered on valve ball hole,
So that natural gas and liquid are to moving uphole.In addition, connecting fastening to guarantee to throttle gas nozzle 2054 with ball seat 2053, while just
In replacement, throttling gas nozzle 2054 is threadedly coupled with ball seat 2053.Specifically, interior spiral shell is provided on the inner wall of centre bore lower end
Line, throttle gas nozzle 2054 outer wall on be provided with external screw thread compatible with the internal screw thread.By replacing various sizes of throttling
Gas nozzle 2054 can make the production operation of natural gas well progress different output.
In order to guarantee that ball-and-seat 205 connect fastening with path central tube 201, make ball-and-seat 205 and 201 spiral shell of path central tube
Line connection.Specifically, the outer wall of ball seat 2053 is provided with external screw thread, is provided in the inner wall of path central tube 201 outer with this
The compatible internal screw thread of screw thread.
In embodiments of the present invention, as shown in Fig. 2, liquid part 2 is taken further include: packing element bracket 208, outer sleeve 209, spring
Sleeve 210, spring pressure pipe 211, spring 212, rubber tube seat 213, upper packing element 214, lower rubber cylinder 215, lower contact 216, connector
217.Wherein, packing element bracket 208 is sleeved on the lower part of major diameter central tube 202, upper end and the packing element bracket 208 of outer sleeve 209
Lower end connection, the upper end of spring spool 210 is sleeved on the lower end of major diameter central tube 202, and is located at major diameter central tube 202 and housing
Between cylinder 209, and upper surface and the lower end surface of packing element bracket 208 offset.The upper surface of spring pressure pipe 211 and ball-and-seat 205
Lower end surface offsets, and the lower part of top and spring spool 210 cooperatively forms spring cavity, and spring pressure pipe 211 can be along spring spool
210 side wall moves up and down.Spring 212 is sleeved in spring pressure pipe 211, and is located in spring cavity.Rubber tube seat 213 is sleeved on glue
The upper end of tube stent 208.Upper packing element 214 is sleeved on major diameter central tube 202, and the upper surface phase of lower end surface and rubber tube seat 213
It supports.Lower rubber cylinder 215 is sleeved on packing element bracket 208, and upper surface and the lower end surface of rubber tube seat 213 offset.Lower contact 216 is set with
It is connect in the lower part of spring pressure pipe 211, and with the lower end of outer sleeve 209, spring pressure pipe 211 can pass through lower contact up or down
216.Connector 217 is connect with the lower end of spring pressure pipe 211, and the lower end surface under the drive of spring pressure pipe 211 with lower contact 216
It offsets or separates.
Before it will take 2 tripping in flow string 1 of liquid part, by spring pressure pipe 211 along spring spool 210 side wall to moving down
Dynamic, with compressed spring chamber, the spring 212 for keeping it internal is in compressive state, at this point, using cutting member 204 by path central tube
201 and major diameter central tube 202 connect.Then, it will take in 2 tripping in flow string 1 of liquid part, make it through the anchoring of slips 207
On the inner wall of flow string 1, above guide and support liquid part 2, break cutting member 204, flick spring 212, drive spring pressure pipe 211 to
Upper movement, and then drive lower contact 216, outer sleeve 209 to move upwards by connector 217, distending lower rubber cylinder 215 makes lower glue
The inner wall of the outer wall and flow string 1 of cylinder 215 fits closely.In the process, rubber tube seat 213 continues up, on distending
Packing element 214 fits closely the outer wall of packing element 214 and the inner wall of flow string 1.It, can be with during compressed spring chamber
Fastening nut is set in the lower end of spring pressure pipe 211, connect the fastening nut and the lower thread of spring pressure pipe 211, passes through
Fastening nut is turned, the lower end surface of end face thereon and spring spool 210 is made to offset and move upwards, to realize the pressure to spring cavity
Contracting.
By setting spring spool 210 and spring pressure pipe 211, and the two is made to cooperatively form spring cavity, and spring pressure pipe 211
It can be moved up and down along the side wall of spring spool 210, the flexible of spring cavity and spring 212 be realized, so as to 214 He of packing element on distending
Lower rubber cylinder 215.By setting packing element bracket 208 and rubber tube seat 213, the support to upper packing element 214 is realized, so as in lower rubber cylinder
215 make upper 214 distending of packing element when moving to well head.By the way that upper packing element 214 and lower rubber cylinder 215 is arranged, and make the two in spring 212
Elastic force act on lower distending, fitted closely with the inner wall of flow string 1, improve the leakproofness for taking liquid part 2.By being connect under setting
First 216 and connector 217, and make spring pressure pipe 211 that can pass through lower contact 216, and the lower end of spring pressure pipe 211 up or down
It is connect with connector 217, offsets or separate with the lower end surface of lower contact 216 under the drive of spring pressure pipe 211, both ensure that shearing
Part 204, which is pulled off rear connectors 217, can drive lower contact 216, outer sleeve 209 to move upwards, by upper packing element 214 and lower rubber cylinder
215 distendings, and can deviate from from lower contact 216 during moving upwards to avoid spring pressure pipe 211.
Wherein, packing element bracket 208 and rubber tube seat 213 all can be pipe structures, wherein rubber tube seat 213 is radially
It is provided with the upper surface tilted down, which is adapted with the structure of upper 214 lower end of packing element.Also, upper packing element 214 is under
215 structure of packing element is identical, and the upper end of outer sleeve 209 is adapted with the structure of 215 lower end of lower rubber cylinder.
In order to guarantee that connector 217 connect fastening with spring pressure pipe 211, at the same it is easy to disassemble, and which can be
Nut.Wherein, the outer diameter of 217 circumscribed circle of connector is greater than the internal diameter of lower contact 216, and the outer wall of the lower end of spring pressure pipe 211
On be provided with external screw thread compatible with connector 217.
In order to guarantee that lower contact 216 connect fastening with outer sleeve 209, at the same it is easy to disassemble, by lower contact 216 and outer sleeve
209 are threadedly coupled, at this point, lower contact 216 can be provided with externally threaded pipe structure for upper end, 209 lower end of outer sleeve it is interior
Wall is provided with internal screw thread compatible with the external screw thread.Also, in order to guarantee that packing element bracket 208 connect fastening with rubber tube seat 213,
Packing element bracket 208 is threadedly coupled with rubber tube seat 213, specifically, is provided with external screw thread on the outer wall of 208 upper end of packing element bracket,
Internal screw thread compatible with the external screw thread is provided on the inner wall of 213 upper end of rubber tube seat.
It is moved down to limit upper packing element 214, the upper packing element 214 after operation is avoided to recycle difficulty.Such as 2 institute of attached drawing
Show, take liquid part 2 further include: the first locating part 218 is arranged on major diameter central tube 202, for limiting upper packing element 214 to moving down
It is dynamic.
Wherein, the first locating part 218 can be set to circlip.It is provided on the outer wall of major diameter central tube 202 and the first limit
The position compatible limit card slot of part 218,218 a part of the first locating part are stuck in limit card slot, and another part is exposed at limiting card
Slot is outer and offsets with the lower end of upper 214 inner wall of packing element.
In order to improve the sand controlling result for taking liquid part 2, avoids the sand grains of underground from entering together with natural gas and liquid and take liquid part 2
In.As shown in Fig. 2, liquid part 2 is taken further include: upper end opening and side wall are in mesh-structured outer barrel 219, upper end and lower contact
216 lower end connection.Upper end opening and side wall are in mesh-structured inner cylinder 220, are set in outer barrel 219.
Wherein, in order to guarantee that outer barrel 219 connect fastening with lower contact 216, by outer barrel 219 and 216 screw thread of lower contact
Connection, specifically, is provided with internal screw thread on the inner wall of 219 upper end of outer barrel, be provided with and be somebody's turn to do on the outer wall of 216 lower end of lower contact
The compatible external screw thread of internal screw thread.
Can be there are gap between outer barrel 219 and inner cylinder 220, it can also be very close to each other.In order to guarantee outer barrel 219
It connects and fastens with inner cylinder 220, while improving the circulation of natural gas and liquid, outer barrel 219 and 220 screw thread of inner cylinder are connected
It connects, specifically, the upper end outwardly convex of inner cylinder 220, and mutually fitted in the setting of the outer wall of the protrusion and the internal screw thread of outer barrel 219
The external screw thread matched, at this point, annular space is formed between outer barrel 219 and inner cylinder 220, so as to natural gas and liquid communication.And
And in order to further increase the sand controlling result for taking liquid part 2, set the mesh on 220 side wall of outer barrel 219 and inner cylinder staggeredly
It sets, i.e., the mesh on the two side wall does not correspond to.
It is flexible in order to convenient for above guiding and supporting liquid part 2, avoid spring 212 to occur after production operation, it effectively realizes pair
The limit of spring 212.As shown in Fig. 2, liquid part 2 is taken further include: the second locating part 221.Second locating part 221 is arranged in bullet
The top of spring pressure pipe 211, and it is located at the top of spring cavity.It is provided on the inner wall of spring spool 210 and 221 phase of the second locating part
The limit card slot of adaptation.For second locating part 221 for being stuck in limit card slot, the intracavitary spring 212 of limited spring is flexible.
Wherein, the second locating part 221 can be set to circlip, and the top of spring pressure pipe 211 is provided with for accommodating second
The toroidal cavity of locating part 221.When above guiding and supporting liquid part 2, the second locating part 221 is moved down, and part of it is made to be stuck in limit
In card slot, another part is stuck in toroidal cavity, and then realizes the limit to spring 212.
In order to improve the leakproofness between path central tube 201 and major diameter central tube 202, prevent natural gas in pit shaft and
Annular space outflow of the liquid between path central tube 201 and major diameter central tube 202, to influence normal production operation.
It is provided on the outer wall of 201 lower part of path central tube seal groove 2011 (referring to attached drawing 2), and is set in each seal groove 2011
It is equipped with sealing ring.
To flow string 1, when depth is at 2000m, liquid occurs for slipping downwards below, and summary multistage takes liquid device
The course of work:
In the wellbore by the setting of flow string 1, and carry out drifting operation, to drifting operation after, take liquid for first
2 tripping in of part and the 2000m depth for being fixed on flow string 1, at this point, 1m3Liquid rise 200m when, which will appear cunning
It is de-.Therefore, the 1800m depth that liquid part 2 is fixed on flow string 1 is taken for second, at this point, 1m3Liquid rise 500m when, should
Liquid will appear slippage.Therefore, third takes the 1300m depth that liquid part 2 is fixed on flow string 1, and so on, until more
It is a to take until the natural gas of stratum output and liquid drain into well head by liquid part 2.
Second aspect, based on the device of above-mentioned offer, the embodiment of the invention provides using the device by stratum output
The method that liquid carries out pit shaft, specifically, this method comprises:
Flow string 1 is arranged in pit shaft, and takes liquid part 2 by multiple and is sequentially fixed in flow string 1 along axial direction
On wall, production operation is carried out.The natural gas and liquid of stratum output enter flow string 1 and sequentially flow through in flow string 1
It is multiple to take liquid part 2, utilize multiple liquid refluxes taken liquid part 2 and prevent from flowing through.When stratum output natural gas and liquid again into
Enter flow string 1 and by the liquid that liquid part 2 retains being taken and being moved directly with natural gas and the well head in the same direction of liquid one when taking liquid part 2
To discharge pit shaft, production operation is completed.
The liquid of stratum output is carried out by pit shaft by using the above method, avoid during production operations, to
The liquid of ground motion flows back in flow string 1, to fall after rise to shaft bottom, causes wellbore effusion, fundamentally solves
It the problem of wellbore effusion, improves the gas production of the natural gas well, reduces the operating cost generated by wellbore effusion.
The foregoing is merely presently preferred embodiments of the present invention, the protection scope being not intended to limit the invention, all in this hair
Within bright spirit and principle, any modification, equivalent replacement, improvement and so on should be included in protection scope of the present invention
Within.
Claims (10)
1. a kind of multistage takes liquid device, comprising: the flow string (1) in pit shaft is arranged in；
It is characterized in that, the multistage takes liquid device further include: it is multiple to take liquid part (2), the production is sequentially fixed on along axial direction
On the inner wall of tubing string (1), and every two adjacent described take between liquid part (2) has default spacing, and the liquid part (2) of taking is used for
Keep natural gas and the liquid of stratum output upper, and prevents the liquid reflux.
2. multistage according to claim 1 takes liquid device, which is characterized in that the liquid part (2) of taking includes: path central tube
(201), the major diameter central tube (202) being sleeved on the path central tube (201), the path central tube (201) with it is described
Major diameter central tube is formed with annular space between (202)；
The upper end of the annular space is inserted into top connection (203), lower end, and with the path central tube (201) and the major diameter
Central tube (202) is connected by cutting member (204)；
Ball-and-seat (205) is connected to the lower end of the path central tube (201)；
Fishing head (206) is sleeved on the top of the major diameter central tube (202)；
Slips (207) is sleeved on the major diameter central tube (202) and connect with the fishing head (206).
3. multistage according to claim 2 takes liquid device, which is characterized in that described to take liquid part (2) further include: to be sleeved on institute
State the packing element bracket (208) of major diameter central tube (202) lower part；
Outer sleeve (209), upper end are connect with the lower end of the packing element bracket (208)；
Spring spool (210), upper end is sleeved on the lower end of the major diameter central tube (202), and is located at the major diameter central tube
(202) between the outer sleeve (209), and upper surface and the lower end surface of the packing element bracket (208) offset；
Spring pressure pipe (211), the lower end surface of upper surface and the ball-and-seat (205) offset, top and the spring spool (210)
Lower part cooperatively form spring cavity, and the spring pressure pipe (211) can move down on the side wall of the spring spool (210)
It is dynamic；
Spring (212) is sleeved on the spring pressure pipe (211), and is located in the spring cavity；
Rubber tube seat (213) is sleeved on the upper end of the packing element bracket (208)；
Upper packing element (214) is sleeved on the major diameter central tube (202), and the upper surface of lower end surface and the rubber tube seat (213)
It offsets；
Lower rubber cylinder (215) is sleeved on the packing element bracket (208), and the lower end surface phase of upper surface and the rubber tube seat (213)
It supports；
Lower contact (216) is sleeved on the lower part of the spring pressure pipe (211), and connect with the lower end of the outer sleeve (209),
The spring pressure pipe (211) can pass through the lower contact (216) up or down；
Connector (217) is connect with the lower end of the spring pressure pipe (211), and the spring pressure pipe (211) drive under and institute
The lower end surface for stating lower contact (216) offsets or separates.
4. multistage according to claim 3 takes liquid device, which is characterized in that described to take liquid part (2) further include: the first limit
Part (218) is arranged on the major diameter central tube (202), moves down for limiting the upper packing element (214).
5. multistage according to claim 2 takes liquid device, which is characterized in that the ball-and-seat (205) includes: valve ball cap
(2051), valve ball (2052), ball seat (2053) and throttling gas nozzle (2054)；
The valve ball cap (2051) is sleeved on the ball seat (2053), and is connected to the path central tube (201)；
The ball seat (2053) is provided with the centre bore being connected to the path central tube (201), and lower end surface and the spring
The upper surface of pressure pipe (211) offsets；
The valve ball (2052) is located at the top of the ball seat (2053), is used to open or blocks the centre bore；
The throttling gas nozzle (2054) connect with the lower end of the centre bore.
6. multistage according to claim 4 takes liquid device, which is characterized in that described to take liquid part (2) further include: upper end opening
And side wall is in mesh-structured outer barrel (219), upper end is connect with the lower end of the lower contact (216)；
Upper end opening and side wall are in mesh-structured inner cylinder (220), are set in the outer barrel (219).
7. multistage according to claim 6 takes liquid device, which is characterized in that described to take liquid part (2) further include: the second limit
Part (221) is arranged on the top of the spring pressure pipe (211), and is located at the top of the spring cavity；
The compatible limit card slot with second locating part (221) is provided on the inner wall of the spring spool (210)；
Second locating part (221) limits the spring (212) in the spring cavity for being stuck in the limit card slot
It is flexible.
8. multistage according to claim 7 takes liquid device, which is characterized in that described to take liquid part (2) further include: stop collar
(222)；
The stop collar (222) includes: inner ring body, is sleeved on the outer ring body on the inner ring body by multiple blocks, described interior
Ring body is sleeved on the major diameter central tube (202)；
It is formed between the inner ring body, the outer ring body and multiple blocks multiple for across the slips (207)
The arc space in portion.
9. multistage according to claim 8 takes liquid device, which is characterized in that outside path central tube (201) lower part
Seal groove (2011) are provided on wall；
Sealing ring is provided in each seal groove (2011).
10. the method that the liquid of stratum output is carried out pit shaft using claim 1-9 described in any item devices, feature
It is, which comprises
Flow string (1) is arranged and is sequentially fixed on the flow string along axial direction in pit shaft, and by multiple liquid parts (2) of taking
(1) on inner wall, production operation is carried out；
The natural gas and liquid of stratum output enter the flow string (1) and sequentially flow through more in the flow string (1)
Liquid part (2) are taken described in a, utilize multiple liquid refluxes taken liquid part (2) and prevent from flowing through；
When the natural gas and liquid of stratum output be again introduced into the flow string (1) and pass through described in take liquid part (2) when,
By the liquid for taking liquid part (2) retention with the natural gas and the movement of the well head in the same direction of liquid one until discharge pit shaft, completes to give birth to
Produce operation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710619753.4A CN109306856A (en) | 2017-07-26 | 2017-07-26 | A kind of multistage takes liquid device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710619753.4A CN109306856A (en) | 2017-07-26 | 2017-07-26 | A kind of multistage takes liquid device and method |
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| CN109306856A true CN109306856A (en) | 2019-02-05 |
Family
ID=65202057
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| CN201710619753.4A Pending CN109306856A (en) | 2017-07-26 | 2017-07-26 | A kind of multistage takes liquid device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302584A (en) * | 2019-07-29 | 2021-02-02 | 中国石油化工股份有限公司 | Downhole gas lift device and tubular column |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201159073Y (en) * | 2008-02-02 | 2008-12-03 | 陕西星辰石油科技有限责任公司 | Natural gas down-hole dropping equipment |
| CN202338299U (en) * | 2011-10-21 | 2012-07-18 | 中国石油天然气股份有限公司 | Downhole throttler with sand prevention filter element structure |
| CN202338304U (en) * | 2011-11-03 | 2012-07-18 | 中国石油天然气股份有限公司 | Easily-fished slip-type underground throttle with knock-off prevention cover |
| US20140182838A1 (en) * | 2012-12-28 | 2014-07-03 | Cnpc Bohai Drilling Engineering Company Limited | Multi-level sliding sleeve |
| CN204175261U (en) * | 2014-09-29 | 2015-02-25 | 中国石油天然气股份有限公司 | A kind of restriction choke |
| CN105019860A (en) * | 2014-04-28 | 2015-11-04 | 中国石油化工股份有限公司 | Vertical gravity high-pressure check valve string |
| CN105604525A (en) * | 2015-12-16 | 2016-05-25 | 中国石油天然气股份有限公司 | Multistage plunger gas lifting device for combined tubular column and process |
| CN105840154A (en) * | 2016-04-19 | 2016-08-10 | 陕西汇丰悦石油科技开发有限公司 | Novel slip-type downhole throttler |
| CN106014346A (en) * | 2016-06-30 | 2016-10-12 | 中国石油天然气股份有限公司 | Drainage and gas production method and device through velocity string in cooperation with plunger airlift |
-
2017
- 2017-07-26 CN CN201710619753.4A patent/CN109306856A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201159073Y (en) * | 2008-02-02 | 2008-12-03 | 陕西星辰石油科技有限责任公司 | Natural gas down-hole dropping equipment |
| CN202338299U (en) * | 2011-10-21 | 2012-07-18 | 中国石油天然气股份有限公司 | Downhole throttler with sand prevention filter element structure |
| CN202338304U (en) * | 2011-11-03 | 2012-07-18 | 中国石油天然气股份有限公司 | Easily-fished slip-type underground throttle with knock-off prevention cover |
| US20140182838A1 (en) * | 2012-12-28 | 2014-07-03 | Cnpc Bohai Drilling Engineering Company Limited | Multi-level sliding sleeve |
| CN105019860A (en) * | 2014-04-28 | 2015-11-04 | 中国石油化工股份有限公司 | Vertical gravity high-pressure check valve string |
| CN204175261U (en) * | 2014-09-29 | 2015-02-25 | 中国石油天然气股份有限公司 | A kind of restriction choke |
| CN105604525A (en) * | 2015-12-16 | 2016-05-25 | 中国石油天然气股份有限公司 | Multistage plunger gas lifting device for combined tubular column and process |
| CN105840154A (en) * | 2016-04-19 | 2016-08-10 | 陕西汇丰悦石油科技开发有限公司 | Novel slip-type downhole throttler |
| CN106014346A (en) * | 2016-06-30 | 2016-10-12 | 中国石油天然气股份有限公司 | Drainage and gas production method and device through velocity string in cooperation with plunger airlift |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302584A (en) * | 2019-07-29 | 2021-02-02 | 中国石油化工股份有限公司 | Downhole gas lift device and tubular column |
| CN112302584B (en) * | 2019-07-29 | 2022-12-09 | 中国石油化工股份有限公司 | Downhole gas lift device and tubular column |
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Application publication date: 20190205 |