CN109138927A - It single-way switch, screw pump tubing string and drives a well and anti-sticking stops method - Google Patents
It single-way switch, screw pump tubing string and drives a well and anti-sticking stops method Download PDFInfo
- Publication number
- CN109138927A CN109138927A CN201810862900.5A CN201810862900A CN109138927A CN 109138927 A CN109138927 A CN 109138927A CN 201810862900 A CN201810862900 A CN 201810862900A CN 109138927 A CN109138927 A CN 109138927A
- Authority
- CN
- China
- Prior art keywords
- screw pump
- tubing string
- way switch
- housing
- ontology
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 92
- 239000007788 liquid Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000004873 anchoring Methods 0.000 claims 1
- 239000004615 ingredient Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
Classifications
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
-
- 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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/05—Flapper valves
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of single-way switch, screw pump tubing string and drive a well it is anti-sticking stop method, which includes sequentially connected from bottom to top: anchor, single-way switch, screw pump, sucker rod；Wherein, the single-way switch includes: hollow ontology, and the upper end of the ontology is connected with the screw pump, and lower end is connected with the anchor；The sealing element of shape in the ontology is set, and the side of the sealing element is matched by way of rotation connection with the inside of the ontology, and the opposite other side is fixed by pin；Return unit, the return unit are used to provide restoring force for the sealing element；When tripping in screw pump and sucker rod, well liquid is blocked by the single-way switch, after screw pump tubing string tripping in, can be opened the single-way switch by suppressing.Single-way switch provided by the invention, screw pump tubing string and drive a well it is anti-sticking stop method, can increase substantially to rise after screw pump workover treatment and be pumped into power.
Description
Technical field
The present invention relates to oil field tool of production technical field, in particular to a kind of single-way switch, screw pump tubing string and drive a well
It is anti-sticking to stop method.
Background technique
In oil field during production development, the tripping in oil well pump in well is needed to recover the oil.A kind of common oil recovery is used
Oil well pump be screw pump.The screw pump of oil recovery is one kind of single-screw hydraulic, is cycloid internal messing helical gear
A kind of secondary application.Screw pump is provided with rotor and stator pair, in use, how equivalent dynamic the rotor, stator pair utilize cycloid
Point effect forms closed chamber in space.When rotor and stator relatively rotate, closed chamber can be moved axially, and make it
In liquid shift to the other end from one end, mutually converting for mechanical energy and hydraulic energy is realized, to realize lifting.Currently, screw rod
Pump has become a kind of practical and effective mechanical oil recovery equipment.
However, to be concentrated mainly on the improvement of surface drive, rod string in screw pump anti-reverse for screw pump oil production technology at present
Technology, surface protection technique etc., for rising after screw pump workover treatment, to take out unsuccessful aspect research less.
Especially after screw pump workover treatment, screw pump, oil pipe and oil well still three are connected to, therefore can not
Pressure testing is carried out to tubing string, the sealing situation of entire tubing string can not be understood.
Secondly, in lower screw pump stator and oil pipe, screw pump stator lower end fall in dead oil in well liquid, wax and/
Or other impurities, dead oil, wax and/or other impurities can be adhered in screw pump stator rubber.Easily turn when tripping in rotor
Son enters to pump phenomenon not in place, and complete well rises to take out and is easy to appear Ka Jing, do not go out the case where liquid.Especially screw pump well workover is made in winter
When industry, phenomenon is become apparent.
In conclusion being highly desirable to provide a kind of screw pump well workover technology, defect in the prior art can be overcome, greatly
It is risen after amplitude raising screw pump workover treatment and is pumped into power.
Summary of the invention
The object of the present invention is to provide a kind of single-way switch, screw pump tubing string and drive a well it is anti-sticking stop method, can overcome existing
There is the defects of technology, increases substantially to rise after screw pump workover treatment and be pumped into power.
Following technical proposal can be used to realize in above-mentioned purpose of the invention:
A kind of screw pump tubing string includes sequentially connected: anchor, single-way switch, screw pump, sucker rod from bottom to top；
Wherein, the single-way switch includes:
Hollow ontology, the upper end of the ontology are connected with the screw pump, and lower end is connected with the anchor；
The sealing element of shape in the ontology is set, the side of the sealing element by way of rotation connection with described
The inside of body matches, and the opposite other side is fixed by pin；
Return unit, the return unit are used to provide restoring force for the sealing element；
When tripping in screw pump and sucker rod, well liquid is blocked by the single-way switch, after screw pump tubing string tripping in,
The single-way switch can be opened by suppressing.
In one preferred embodiment, the ontology includes housing and connector sleeve, wherein during the housing is integrally in
The upper end inside of empty revolving body, the housing is connected with the screw pump, the lower end inside of the housing and the connection
Set is connected；
The connector sleeve is integrally in hollow revolving body, is connected on the outside of the upper end of the connector sleeve with the housing, institute
The lower end outside for stating connector sleeve is connected with the anchor, and the inner section of the connection set upper side is less than the outer of the sealing element
Section.
It in one preferred embodiment, further include inner sleeve, the generally hollow revolving body of the inner sleeve, the inner sleeve
The middle part of the housing is set, and lower end can match with the sealing element, also set up between the inner sleeve and the housing
There is sealing ring.
In one preferred embodiment, the sealing element is the form for sealing folded plate, and the sealing folded plate has pre-
Determine the plate body of thickness, the side of the plate body can be matched with the inner sleeve and housing simultaneously.
In one preferred embodiment, the return unit is spring, and one end of the spring is fixed on the sealing
On folded plate, the other end is fixed on the inner wall of the housing.
In one preferred embodiment, the side of the sealing folded plate is provided with pivot pin, after the pin is cut,
The sealing folded plate can be rotated centered on the pivot pin.
It is a kind of based on above-mentioned screw pump tubing string drive a well it is anti-sticking stop method, the screw pump includes stator and rotor, institute
It states anchor, single-way switch, screw pump stator, oil pipe and forms a tubing string, the screw pump rotor, sucker rod form secondary pipe
Column, this method comprises:
Tubing string G.I.H of single-way switch will be provided with；
It injects and water and suppresses into the tubing string, the single-way switch is opened, hydraulic in a tubing string is greater than
External hydraulic, the water in a tubing string discharge；
Secondary tubing string described in tripping in.
A kind of single-way switch, comprising:
The upper end of hollow ontology, the ontology is connected with screw pump, and lower end is connected with anchor；
The sealing element of shape in the ontology is set, the side of the sealing element by way of rotation connection with described
The inside of body matches, and the opposite other side is fixed by pin；
Return unit, the return unit are used to provide restoring force for the sealing element；
When tripping in screw pump and sucker rod, well liquid is blocked by the single-way switch, after screw pump tubing string tripping in,
The single-way switch can be opened by suppressing.
In one preferred embodiment, the single-way switch is described for being arranged between screw pump and anchor
Ontology includes housing and connector sleeve, wherein the housing is integrally in hollow revolving body, on the inside of the upper end of the housing with it is described
Screw pump is connected, and the lower end inside of the housing is connected with the connector sleeve；
The connector sleeve is integrally in hollow revolving body, is connected on the outside of the upper end of the connector sleeve with the housing, institute
The lower end outside for stating connector sleeve is connected with the anchor, and the inner section of the connection set upper side is less than the outer of the sealing element
Section.
It in one preferred embodiment, further include inner sleeve, the generally hollow revolving body of the inner sleeve, the inner sleeve
The middle part of the housing is set, and lower end can match with the sealing element, also set up between the inner sleeve and the housing
There is sealing ring；
The sealing element is the form for sealing folded plate, and the sealing folded plate has the plate body of predetermined thickness, the plate body
Side can be matched with the inner sleeve and housing simultaneously；
The return unit is spring, and one end of the spring is fixed on the sealing folded plate, and the other end is fixed on described
On the inner wall of housing；
The side of the sealing folded plate is provided with pivot pin, and after the pin is cut, the sealing folded plate can be with the axis
It is rotated centered on pin.
The features and advantages of the invention are: single-way switch, screw pump tubing string and the anti-sticking side of stopping that drives a well provided herein
Method, the single-way switch is for being arranged between the screw pump and anchor of screw pump tubing string.In workover treatment, when under operation
When screw pump stator and oil pipe, due to being provided with single-way switch, well liquid can not be entered in tubing string by single-way switch；In full well casing
After column tripping in, clear water is poured into tubing string, and suppress 3-6MPa using pump truck and single-way switch is opened, at this time due to tubing string
Interior clear water fluid column is higher than oil sets annular space liquid level.It is hydraulic in tubing string to be higher than oil sets annular space pressure, according to pressure balance original
It manages, the clear water in tubing string is released from screw pump stator lower end, and well liquid cannot be introduced into tubing string, make to remain clear in tubing string
It is clean.Last tripping in rotor, roofbolt and ground drive part, complete entire workover treatment.Due to not having in the tubing string of rotor tripping in
Well liquid enters, i.e., not having can cause the pollutant of holddown to enter tubing string, avoids screw rod and pumps up to take out and blocks the phenomenon that stopping appearance,
Power is pumped into so as to increase substantially to rise after screw pump workover treatment.In addition, can be realized simultaneously pressure testing when suppressing.
Referring to following description and accompanying drawings, specific implementations of the present application are disclosed in detail, specify the original of the application
Reason can be in a manner of adopted.It should be understood that presently filed embodiment is not so limited in range.In appended power
In the range of the spirit and terms that benefit requires, presently filed embodiment includes many changes, modifications and is equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Detailed description of the invention
Fig. 1 is a kind of screw pump tubular column structure schematic diagram in the application embodiment；
Fig. 2 is a kind of structural schematic diagram of single-way switch in the application embodiment；
Fig. 3 is status diagram when a kind of single-way switch is opened in the application embodiment；
Fig. 4 is a kind of anti-sticking step flow chart for stopping method that drives a well in the application embodiment.
Description of symbols:
1- casing；2- oil pipe；3- anchor；4- sucker rod；5- bar centralizer；6- stator；7- rotor；8- single-way switch；
81- housing；82- connector sleeve；83- inner sleeve；The first sealing ring of 84-；The second sealing ring of 85-；86- seals folded plate；87- pivot pin；88-
Pin；89- spring.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, elaborate to technical solution of the present invention, it should be understood that these
Embodiment is only illustrative of the invention and is not intended to limit the scope of the invention, after the present invention has been read, this field skill
Art personnel each fall in the application range as defined in the appended claims the modification of various equivalent forms of the invention.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", "upper",
"lower", "left", "right" and similar statement for illustrative purposes only, are not meant to be the only embodiment.
The present invention provide a kind of single-way switch, screw pump tubing string and drive a well it is anti-sticking stop method, can overcome in the prior art
Defect, increase substantially to rise after screw pump workover treatment and be pumped into power.
It please refers to Fig.1 to Fig.3, a kind of screw pump tubing string is provided in the application embodiment, from bottom to top include successively connecting
It connects: anchor 3, single-way switch 8, screw pump, sucker rod 4；Wherein, the single-way switch 8 includes: hollow ontology, described
The upper end of ontology is connected with the screw pump, and lower end is connected with the anchor 3；The close of shape in the ontology is set
Sealing, the side of the sealing element are matched by way of rotation connection with the inside of the ontology, and the opposite other side is logical
It is fixed to cross pin 88；Return unit, the return unit are used to provide restoring force for the sealing element；When tripping in screw pump and sucker rod
When 4, well liquid is blocked by the single-way switch 8, can be by the single-way switch 8 by suppressing after screw pump tubing string tripping in
It opens.
In the present embodiment, the screw pump tubing string may include sequentially connected from bottom to top: anchor 3, unidirectional
Switch 8, screw pump, sucker rod 4.In the present embodiment, the screw pump may include stator 6 and rotor 7.On sucker rod 4
It is spaced apart to be provided with bar centralizer 5, with guarantee entire roofbolt to neutrality.
On the whole, the application by between screw pump and anchor 3 be arranged single-way switch 8 can control it is fashionable under tubing string
Pressure testing can be carried out, well liquid is furthermore also possible to prevent and enters tubing string before opening the single-way switch 8 with the connected relation of underground
In, to be adhered in 6 rubber of stator of screw pump.
Specifically, the single-way switch 8 may include: hollow ontology, the upper end of the ontology is connected with the screw pump
It connects, lower end is connected with the anchor 3；The sealing element of shape in the ontology is set, and the side of the sealing element passes through
The mode of rotation connection is matched with the inside of the ontology, and the opposite other side is fixed by pin 88；Return unit, it is described multiple
Position part is used to provide restoring force for the sealing element；When tripping in screw pump and sucker rod 4, well liquid is by 8 envelope of single-way switch
It is stifled, after screw pump tubing string tripping in, the single-way switch 8 can be opened by suppressing.
In the present embodiment, the ontology can be in hollow revolving body, with opposite top and bottom.Its
In, the upper end of the ontology is connected with the screw pump, and lower end is connected with the anchor 3.Specifically, the ontology
It can be monolithic construction, in addition, can set split type for the ontology to facilitate installation, reduce difficulty of processing simultaneously.
In one embodiment, the ontology may include housing 81 and connector sleeve 82, wherein the housing 81 is whole
In hollow revolving body, be connected on the inside of the upper end of the housing 81 with the screw pump, the lower end inside of the housing 81 and
The connector sleeve 82 is connected.The whole connector sleeve 82 is in hollow revolving body, the upper end outside of the connector sleeve 82 and institute
Housing 81 is stated to be connected, the lower end outside of the connector sleeve 82 is connected with the anchor 3,82 upper end of connector sleeve it is interior
Section is less than the outer cross section of the sealing element.
Specifically, the housing 81 is matched with the mode that connector sleeve 82 can be connected through a screw thread.The housing 81 and company
The outer diameter of female connector 82 can be identical.When the inside of 81 lower end of housing and the outside of 82 upper end of connector sleeve are by being threadedly engaged
When, which can hold on it and be provided with stage portion, and the stage portion is used for and the lower end of the housing 81 matches.
The inner section of the upper end of the connector sleeve 82 is less than the outer cross section of the sealing element, when sealing element is fallen off in use
When, it can be hung by the connector sleeve 82.
In one embodiment, which can also include inner sleeve 83, and the inner sleeve 83 is generally hollow to return
Swivel, the middle part of the housing 81 is arranged in the inner sleeve 83, and lower end can be matched with the sealing element, the inner sleeve 83 with
Sealing ring is additionally provided between the housing 81.
In the present embodiment, in order to guarantee the leakproofness before the cutting of pin 88 between the sealing element and ontology,
Inner sleeve 83 has can be set in the inside of the ontology.Specifically, the inner sleeve 83 can be generally hollow revolving body, the inner sleeve
83 are arranged in the middle part of the housing 81.The lower end of the inner sleeve 83 can be matched with the sealing element.The inner sleeve 83 and housing
Sealing ring is additionally provided between 81.The sealing ring is for the leakproofness between the inner sleeve 83 and housing 81.Specifically, described
Sealing ring may include the first sealing ring 84 and the second sealing ring 85.Wherein, in order to first sealing ring 84, Ke Yi is arranged
Corresponding fluting is set on the inner wall of the housing 81 and the outer wall of inner sleeve 83.It, can be in order to which second sealing ring 85 is arranged
Corresponding fluting is set on the outer wall of the inner sleeve 83.Wherein, the number of first sealing ring 84 and the second sealing ring 85
Can be for one or multiple, the application does not make specific limit herein.
In one embodiment, the sealing element is the form for sealing folded plate 86, and the sealing folded plate 86 has predetermined
The side of the plate body of thickness, the plate body can be matched with the inner sleeve 83 and housing 81 simultaneously.
In the present embodiment, the sealing element can be the form of sealing folded plate 86.Specifically, the sealing folded plate 86 can
Think the plate body with predetermined thickness.The thickness of the plate body can carry out adaptability selection design according to practical pressure-bearing situation, this
Specific limit is not made in application herein.
In one embodiment, the return unit is spring 89, and one end of the spring 89 is fixed on the sealing folding
On plate 86, the other end is fixed on the inner wall of the housing 81.
In the present embodiment, the return unit can be the form of spring 89, and one end of the spring 89 is fixed on described
It seals on folded plate 86, the other end is fixed on the inner wall of the housing 81.When pin 88 is cut under pressure, the sealing
Folded plate 86 generates certain pressure to the spring 89, puts aside elastic potential energy.When stopping suppressing, in the elastic potential energy of spring 89
The sealing folded plate 86 is resetted under effect.
In one embodiment, the side of the sealing folded plate 86 is provided with pivot pin 87, after the pin 88 is cut,
The sealing folded plate 86 can be rotated centered on the pivot pin 87.
Fig. 3 is please referred to, in the present embodiment, institute is arranged in the sealing folded plate 86 by way of rotation connection
It states in ontology, specifically, pivot pin 87 is arranged in the side of the sealing folded plate 86, after the pin 88 is cut, the sealing folding
Plate 86 can be rotated centered on the pivot pin 87, to open the single-way switch 8.
In workover treatment, when screw pump stator 6 under operation and oil pipe 2, due to be provided with single-way switch 8, well liquid without
Method is entered in tubing string by single-way switch 8；After full well casing column tripping in, clear water is poured into tubing string, and beat using pump truck
Pressure 3-6MPa single-way switch 8 is opened, at this time due in tubing string clear water fluid column than oil pipe 2, casing 1 formed annular space liquid level
It is high.Hydraulic in tubing string to be higher than oil sets annular space pressure, according to pressure balance principle, clear water in tubing string is from screw pump stator 6
Lower end is released, and well liquid cannot be introduced into tubing string, makes to remain cleaning in tubing string.Last tripping in rotor 7, roofbolt and ground are driven
Dynamic part, completes entire workover treatment.Due to entering in the tubing string of 7 tripping in of rotor without well liquid, i.e., holddown can be caused by not having
Pollutant enter tubing string, avoid screw rod and pump up pumping and block the phenomenon that stopping appearance, repaired so as to increase substantially screw pump
It is risen after well operations and is pumped into power.In addition, can be realized simultaneously pressure testing when suppressing.
Fig. 2 and Fig. 3 are please referred to, present invention also provides a kind of single-way switch 8, which may include: hollow
The upper end of ontology, the ontology is connected with screw pump, and lower end is connected with anchor 3；Shape in the ontology is set
Sealing element, the side of the sealing element are matched by way of rotation connection with the inside of the ontology, the opposite other side
It is fixed by pin 88；Return unit, the return unit are used to provide restoring force for the sealing element；When tripping in screw pump and oil pumping
When bar 4, well liquid is blocked by the single-way switch 8, can be by the single-way switch by suppressing after screw pump tubing string tripping in
8 open.
The single-way switch 8 is the single-way switch 8 applied in above-mentioned screw pump tubing string embodiment, specific group
At, structure, connection relationship etc. be referred to the specific descriptions in above-mentioned screw pump tubing string embodiment, the application is no longer superfluous herein
It states.
Referring to Fig. 4, the screw pump includes stator 6 and rotor for the screw pump tubing string that above embodiment provides
7, the anchor 3, single-way switch 8, screw pump stator 6, oil pipe 2 form a tubing string, the screw pump rotor 7, sucker rod 4
Form secondary tubing string；Correspondingly provided in the application embodiment one kind drive a well it is anti-sticking stop method, this method may include as follows
Step:
Step S10: 8 tubing string G.I.Hs of single-way switch will be provided with；
Step S12: water is injected into the tubing string and is suppressed, the single-way switch 8 is opened, in a tubing string
Hydraulic to be greater than external hydraulic, the water in a tubing string discharges；
Step S14: secondary tubing string described in tripping in.
In the present embodiment, anchor 3, single-way switch 8, screw pump stator 6, oil pipe 2 form a tubing string
In workover treatment, when screw pump stator 6 under operation and oil pipe 2, due to be provided with single-way switch 8, well liquid without
Method is entered in tubing string by single-way switch 8.After full well casing column tripping in, clear water is poured into tubing string, and suppress using pump truck
3-6MPa opens single-way switch 8, at this time due in tubing string clear water fluid column it is higher than oil sets annular space liquid level.Due to liquid in tubing string
Pressure is higher than oil sets annular space pressure, and according to pressure balance principle, the clear water in tubing string is released from 6 lower end of screw pump stator, and
Well liquid cannot be introduced into tubing string, make to remain cleaning in tubing string.Last tripping in rotor 7, roofbolt and ground drive part, are completed
Entire workover treatment.The method can prevent screw rod and pump up pumping to block the phenomenon that stopping appearance completely, so as to increase substantially spiral shell
It is risen after bar pump workover treatment and is pumped into power.In addition, can be realized simultaneously pressure testing when suppressing.
Herein cited any digital value all include between lower limit value to upper limit value with the lower value of an incremented and
The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity an of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification
68,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1.
These are only intended to the example clearly expressed, it is believed that all possibility for the numerical value enumerated between minimum and peak
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range
" about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to cover that " about 20 to about
30 ", including at least the endpoint indicated.
All articles and reference disclosed herein, including patent application and publication, for various purposes by helping
Draw and is hereby incorporated by.Describe combined term " substantially by ... constitute " should including identified element, ingredient, component or step with
And other elements, ingredient, component or step essentially without the basic novel feature for influencing the combination.Use term "comprising"
Or " comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, portion
The embodiment that part or step are constituted.Here by using term " can with ", it is intended to illustrate described that " can with " includes
What attribute is all optional.
Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally
Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used to
The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component
Or step.
Above-mentioned each embodiment in this specification is described in a progressive manner, identical between each embodiment
Similar portion is cross-referenced, and what each embodiment stressed is and other embodiments difference.
The foregoing is merely several embodiments of the invention, although disclosed herein embodiment it is as above, institute
Content is stated only to facilitate the embodiment for understanding the present invention and using, is not intended to limit the present invention.Any institute of the present invention
Belong to those skilled in the art, do not depart from disclosed herein spirit and scope under the premise of, can be in embodiment
Formal and details on make any modification and variation, but scope of patent protection of the invention, still must be with appended claims
Subject to the range that book is defined.
Claims (10)
1. a kind of screw pump tubing string, which is characterized in that from bottom to top include sequentially connected: anchor, single-way switch, screw rod
Pump, sucker rod；Wherein, the single-way switch includes:
Hollow ontology, the upper end of the ontology are connected with the screw pump, and lower end is connected with the anchor；
The sealing element of shape in the ontology is set, the side of the sealing element by way of rotation connection with the ontology
Inside matches, and the opposite other side is fixed by pin；
Return unit, the return unit are used to provide restoring force for the sealing element；
When tripping in screw pump and sucker rod, well liquid is blocked by the single-way switch, after screw pump tubing string tripping in, is passed through
The single-way switch can be opened by suppressing.
2. screw pump tubing string as described in claim 1, which is characterized in that the ontology includes housing and connector sleeve, wherein institute
Stating housing integrally is in hollow revolving body, is connected on the inside of the upper end of the housing with the screw pump, the lower end of the housing
Inside is connected with the connector sleeve；
The connector sleeve is integrally in hollow revolving body, is connected on the outside of the upper end of the connector sleeve with the housing, the company
The lower end outside of female connector is connected with the anchor, and the inner section of the connection set upper side is less than outer section of the sealing element
Face.
3. screw pump tubing string as claimed in claim 2, which is characterized in that further include inner sleeve, the inner sleeve is generally hollow
Revolving body, it is described in be set on the middle part of the housing, lower end can be matched with the sealing element, the inner sleeve with it is described
Sealing ring is additionally provided between housing.
4. screw pump tubing string as claimed in claim 3, which is characterized in that the sealing element is the form for sealing folded plate, described
The plate body that folded plate has predetermined thickness is sealed, the side of the plate body can be matched with the inner sleeve and housing simultaneously.
5. screw pump tubing string as claimed in claim 4, which is characterized in that the return unit is spring, one end of the spring
It is fixed on the sealing folded plate, the other end is fixed on the inner wall of the housing.
6. screw pump tubing string as claimed in claim 4, which is characterized in that the side of the sealing folded plate is provided with pivot pin, when
After the pin is cut, the sealing folded plate can be rotated centered on the pivot pin.
7. a kind of driving a well based on screw pump tubing string described in claim 1 anti-sticking stops method, which is characterized in that the screw pump
Including stator and rotor, the anchor, single-way switch, screw pump stator, oil pipe form a tubing string, and the screw pump turns
Son, sucker rod form secondary tubing string, this method comprises:
A tubing string G.I.H of single-way switch will be provided with；
Water is injected into the tubing string and is suppressed, and the single-way switch is opened, it is hydraulic greater than outside in a tubing string
Hydraulic, the water in a tubing string discharges；
Secondary tubing string described in tripping in.
8. a kind of single-way switch characterized by comprising
The upper end of hollow ontology, the ontology is connected with screw pump, and lower end is connected with anchor；
The sealing element of shape in the ontology is set, the side of the sealing element by way of rotation connection with the ontology
Inside matches, and the opposite other side is fixed by pin；
Return unit, the return unit are used to provide restoring force for the sealing element；
When tripping in screw pump and sucker rod, well liquid is blocked by the single-way switch, after screw pump tubing string tripping in, is passed through
The single-way switch can be opened by suppressing.
9. single-way switch as claimed in claim 8, which is characterized in that the single-way switch is for being arranged in screw pump and anchoring
Between device, the ontology includes housing and connector sleeve, wherein the housing is integrally in hollow revolving body, the housing it is upper
End inside is connected with the screw pump, and the lower end inside of the housing is connected with the connector sleeve；
The connector sleeve is integrally in hollow revolving body, is connected on the outside of the upper end of the connector sleeve with the housing, the company
The lower end outside of female connector is connected with the anchor, and the inner section of the connection set upper side is less than outer section of the sealing element
Face.
10. single-way switch as claimed in claim 9, which is characterized in that further include inner sleeve, the inner sleeve is generally hollow to return
Swivel, it is described in be set on the middle part of the housing, lower end can be matched with the sealing element, the inner sleeve and described outer
Sealing ring is additionally provided between set；
The sealing element is the form for sealing folded plate, and the sealing folded plate has the plate body of predetermined thickness, the side of the plate body
It can be matched simultaneously with the inner sleeve and housing；
The return unit is spring, and one end of the spring is fixed on the sealing folded plate, and the other end is fixed on the housing
Inner wall on；
The side of the sealing folded plate is provided with pivot pin, and after the pin is cut, the sealing folded plate can be with the pivot pin
Center rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810862900.5A CN109138927A (en) | 2018-08-01 | 2018-08-01 | It single-way switch, screw pump tubing string and drives a well and anti-sticking stops method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810862900.5A CN109138927A (en) | 2018-08-01 | 2018-08-01 | It single-way switch, screw pump tubing string and drives a well and anti-sticking stops method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109138927A true CN109138927A (en) | 2019-01-04 |
Family
ID=64799407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810862900.5A Pending CN109138927A (en) | 2018-08-01 | 2018-08-01 | It single-way switch, screw pump tubing string and drives a well and anti-sticking stops method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109138927A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2368764C1 (en) * | 2008-05-20 | 2009-09-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Pump plant for simultaneous separate operation of two beds in well |
| CN201318266Y (en) * | 2008-10-20 | 2009-09-30 | 白霞 | Screw pump capable of having pressure test |
| CN203685086U (en) * | 2014-01-29 | 2014-07-02 | 慕武 | Double-spring supporting and pulling type automatic grouting valve type floating valve |
| CN204082099U (en) * | 2014-08-04 | 2015-01-07 | 托普威尔石油技术股份公司 | A kind of screw pump production technique tubing string |
| CN104481463A (en) * | 2014-11-24 | 2015-04-01 | 马琳琳 | Rotating tube driving screw pump oil production device and application method |
| CN104481459A (en) * | 2014-11-18 | 2015-04-01 | 梁伟成 | Oil pumping system for screw pump |
| CN204703836U (en) * | 2014-12-22 | 2015-10-14 | 中国石油天然气股份有限公司 | A kind of oil well blowout prevention tubing string |
| CN108119076A (en) * | 2016-11-29 | 2018-06-05 | 田月瑛 | Pin snap type automatic grouting valve float valve |
-
2018
- 2018-08-01 CN CN201810862900.5A patent/CN109138927A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2368764C1 (en) * | 2008-05-20 | 2009-09-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Pump plant for simultaneous separate operation of two beds in well |
| CN201318266Y (en) * | 2008-10-20 | 2009-09-30 | 白霞 | Screw pump capable of having pressure test |
| CN203685086U (en) * | 2014-01-29 | 2014-07-02 | 慕武 | Double-spring supporting and pulling type automatic grouting valve type floating valve |
| CN204082099U (en) * | 2014-08-04 | 2015-01-07 | 托普威尔石油技术股份公司 | A kind of screw pump production technique tubing string |
| CN104481459A (en) * | 2014-11-18 | 2015-04-01 | 梁伟成 | Oil pumping system for screw pump |
| CN104481463A (en) * | 2014-11-24 | 2015-04-01 | 马琳琳 | Rotating tube driving screw pump oil production device and application method |
| CN204703836U (en) * | 2014-12-22 | 2015-10-14 | 中国石油天然气股份有限公司 | A kind of oil well blowout prevention tubing string |
| CN108119076A (en) * | 2016-11-29 | 2018-06-05 | 田月瑛 | Pin snap type automatic grouting valve float valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115045630A (en) | Conversion type Christmas tree port sealing device for oil field | |
| CN109138927A (en) | It single-way switch, screw pump tubing string and drives a well and anti-sticking stops method | |
| RU184655U1 (en) | LIQUID INJECTION INSTALLATION | |
| CN104265233B (en) | Barrier film inflatable packer | |
| CN109138933A (en) | Elastic screen and sand control pipe | |
| CN112761569B (en) | Electric pump well flushing device and method, special packer and special hanging basket | |
| CN202914046U (en) | Plug-in type screw pump system | |
| CN2670626Y (en) | Rod oil-sucking pumps | |
| CN115977576A (en) | Sand prevention packer and rotary setting process | |
| CN209354701U (en) | Ball-and-seat | |
| CN209483283U (en) | A kind of cartridge | |
| CN204402384U (en) | Safety valve protection joint is driven on oil drilling top | |
| CN207568558U (en) | Reversal valve | |
| CN208152973U (en) | A kind of screw pump well head steam injection sealing device and note adopt integrated optical rod seal apparatus | |
| US20160053758A1 (en) | Ground drive apparatus for progressive cavity pumps | |
| CN204113197U (en) | Barrier film inflatable packer | |
| CN2854066Y (en) | Pressure non-return gate gurgle valve | |
| CN104948787B (en) | A kind of multifunction valve | |
| CN206071544U (en) | A kind of rod-pumped well flow string of washing well | |
| CN216197966U (en) | Well head safety device for hollow rod gas production well | |
| CN206458387U (en) | A kind of tube-in-tube is closed for oily device | |
| CN208122789U (en) | A kind of water injection well hydraulic control flushing valve | |
| CN210134870U (en) | Oil pipe plugging device | |
| CN107120082A (en) | A kind of pressure-resistant anti-clogging side-suction type sand-settling device | |
| CN113413660B (en) | Oil separation filter equipment and filtration system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190104 |
|
| WD01 | Invention patent application deemed withdrawn after publication |