US2624362A - Flow valve for fluid lift pumps - Google Patents

Flow valve for fluid lift pumps Download PDF

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US2624362A
US2624362A US81143A US8114349A US2624362A US 2624362 A US2624362 A US 2624362A US 81143 A US81143 A US 81143A US 8114349 A US8114349 A US 8114349A US 2624362 A US2624362 A US 2624362A
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Prior art keywords
valve
casing
liquid
pressure
carrier
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US81143A
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Walter L Church
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
    • 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
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/122—Gas lift
    • E21B43/123—Gas lift valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2931—Diverse fluid containing pressure systems
    • Y10T137/2934—Gas lift valves for wells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7834—Valve seat or external sleeve moves to open valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7835—Valve seating in direction of flow
    • Y10T137/7836—Flexible diaphragm or bellows reactor

Definitions

  • This invention relates to a iiow valve for a iluid lift pump.
  • An object of the invention is to provide a valve assembly having a tubular body, or casing, which may be connected into a iiow line and which is normally open and which is so constructed that it will be closed by an increase of external pressure.
  • Another object of the invention is to provide a valve assembly having inlet passageways with a movable seat subject to iiuid pressure and which will control the flow of iiuid through said passageways in accordance with variations in pressure against the seat.
  • valve assembly has been especially designed for incorporation into a iiow line in a well.
  • a number of said assemblies will be incorporated into the ow line beneath the level of the liquid in the well casing and will be spaced a selected distance apart vertically so that as the pressure of the liquid in the well varies the valve assemblies will open and close to admit liquid from the well into the flow line in accordancewith variations in pressure applied against the surface of the liquid in the well casing.
  • Figure l is an elevational view of a well casing in a well, shown partly in section and showing the iiow line therein.
  • Figure 2 is an elevational View, partly in section. of one type of the assembly.
  • Figure 3 is an enlarged, fragmentary sectional view thereof.
  • Figure 4 is an enlarged fragmentary side elevation thereof.
  • Figure 5 is an elevational View, partly in section of another embodiment of the assembly and,
  • Figure 6 is an enlarged, fragmentary, sectional view of the embodiment shown in Figure 5.
  • the numeral I designates a conventional well casing having the well head 2 fixed thereon and provided with an inlet pressure line 3.
  • a flow line 4 whose lower end extends down into the well and is submerged in the liquid in the well casing.
  • Each assembly includes a tubular valve casing 6 forming a coupling member to couple the adjacent sections of the iiow line.
  • the valve casing has an external recess 'I preferably circular in shape and leading inwardly from the recess through the wall of the casing 6 there are the spaced inlet ports 8, four of said inlet ports being shown.
  • valve disc 9 Fitted in the recess 1 there is a valve disc 9 provided with an inside annular groove I0.
  • the disc 9 has a central inlet opening I2 and the inner side of the disc is counter-sunk around the opening thus forming an inside valve seat.
  • the disc 9 is retained against detachment in any preferred manner. As shown there are the oppositely disposed screws I4 which are screwed into the casing 6 and whose heads overlap the disc 9 as more clearly shown in Figures 3 and 4.
  • the spring II normally holds the seat disc 9 outwardly thus maintaining the seat open but external pressure in the well casing, which may overcome the pressure of the spring I I, may force the disc inwardly so that the seat will come into close contact with the valve I3 and close the inlet opening I2.
  • the valve seat disc 9 also has an external, annular groove I5 therearound to receive a ring I6 to prevent leakage past said disc.
  • valve casing 6 has the inlet ports 8a similar, in purpose, to the ports 8 and between said ports 8a there is xed to the casing a valve I 3a having an outer oval head.
  • the casing 6 also has the countersunk recess 'I and spanning this recess there is a circular diaphragm 9a whose margins are countersunk into, and secured to, the valve casing around said recess.
  • the diaphragm 9a is preferably corrugated circularly so as to give the diaphragm the required exibility.
  • This diaphragm has a central valve seat with an inlet opening I2a therethrough opposite the valve I3a and normally spaced outwardly from the valve so as to remain open.
  • each form of the valve assembly is equipped with only one valve but, as is obvious, each assembly may have two or more valves incorporated into the casing similar to those shown.
  • valve assemblies will be incorporated into the ow line as shown in Figure 1 all beneath the level of the liquid standing in the well casing l.
  • Fluid pressure is then applied through the pressure line 3 into the well casing against the upper surface of the liquid of the well andthe liquid in the well casing will be forced in through the passageways I2, 8 or I 2a, 8a into the flow line so as to force the liquid in the flow line upwardly and thel flow will continue until the pressure of the liquid about the upper valve assembly is greater than the pressure in the flow line whereupon the disc 9, ⁇ or diaphragm Sa, will be forced inwardly to close the valve and the fluid in the well casing, under the influence of the pressure against the liquid, will flow through the next succeeding valve assembly beneath, thus forcing the liquid on upwardly until said last mentioned Valve assembly is closed, as hereinabove stated, and thereafter liquid will be forced inwardly through the next succeeding valve assembly beneath; however, the pressures Within the flow line and within the casing outside the ilow line vary depending upon conditions in the well.
  • the liquid level in the well casing may be forced downwardly beneath a valve assembly and the gas used as an operating iluid may flow in through said valve assembly and eject a quantity of liquid from the flow line above or break through the liquid in the ilow line above, thus allowing the liquid above in the flow line to fall :back down and temporarily increase the pressure of the liquid in the flow line.
  • the pressure of the liquid in the ow line within a valve assembly and the pressure of the liquid in the valve casing outside of a valve assembly may vary. So a number of valve assemblies should be distributed along the flow line beneath the normal level of the liquid in the well casing to the end that if one valve assembly is closed another assembly may be open to permit the pressure of the operating iluid to be at all times effective in forcing liquid from the well casing through -one or the other of the valve assemblies to permit a constant upward ow of liquid through the ow line. to be discharged at the ground surface through ordinary ow equipment of any selected construction.
  • a ow valve assembly comprising, a tubular valve casingv having a side inlet port, a movable valve seat carrier on the casing and. sealed therewith and having an opening therethrough providing a valve seat and through which outside fluid may be admitted to said port and an inwardly opening recess surrounding said seat, a
  • valve loosely mounted on the carrier and guidingly engageable with the carrier within said recess, abutment means on the casing engageafble by the valve to limit inward movement of the valve to cause the seat to sealingly engage the valve to close the valve seat opening and exclude said fluid upon inward movement of the carrier, and means normally holding the carrier in its outer position to maintain the seat open.
  • a ovv valve assembly comprising, a tubular valve casing having a side inlet port, a yieldably mounted movable valve seat carrier on the casing and sealed therewith and having an opening providing a valve seat through which outside fluid may bev admitted to said port and an inwardly opening recess surrounding said opening, and a valve loosely mounted on said carrier and in guiding engagement with the recessed portion of the carrier, abutment means on the casing engageable by the valve to limit inward movement of the valve to cause the seat to sealingly engage the valve to close the seat opening and exclude said iluid upon inward movement of the carrier.l
  • a now valve assembly comprising, a tubular valve casing having a side inlet port and an external recess around the port, a movable valve seat carrier spanning said recess and in sealed relation with the casing, said carrier having an opening through which outside iluid may 'be admitted to said port and an internal recess about the opening, and a valve loosely mounted in the internal recess enclosed by said carrier and in guiding engagement with the carrier within said internal recess, abutment means on the casing engageableby the valve tolimit inward movew ment of the valve to cause the carrier to sealingly engage the valve about said opening to close said opening and exclude said fluid upon inward movement of the carrier.
  • a flow valve assembly comprising, a tubular valve casing having a side inlet iport and having an external recess around said port, a movable valve seat carrier on the casing enclosing said recess and having an inlet opening and an internal recess surrounding said opening, a valve loosely mounted in the internal recess and enclosed by said carrier and in guiding engagement with the carrier within said internal recess, abutment means on the casing engageable by the valve to limit inward movement lof the valve to cause the carrier to sealingly engage the valve about said opening to close said opening and exclude said uid upon inward movement of the carrier.

Description

Jan. 6, 1953 w. L.. CHURCH 2,624,362
FLow VALVE FOR FLUID LIFT PUMPS Filed March 12, 1949 F7616 By ,L" INVENTOR.
ATRY
Patented Jan. 6, 1953 UNITED STATES PATENT OFFICE FLOW VALVE Fom LIFT PUMPS l Walter L. Church, Houston, Tex.
Application March 12, 1949, Serial No. 81,143
4 claims. (ci. 137-455) This invention relates to a iiow valve for a iluid lift pump.
An object of the invention is to provide a valve assembly having a tubular body, or casing, which may be connected into a iiow line and which is normally open and which is so constructed that it will be closed by an increase of external pressure.
Another object of the invention is to provide a valve assembly having inlet passageways with a movable seat subject to iiuid pressure and which will control the flow of iiuid through said passageways in accordance with variations in pressure against the seat.
The valve assembly has been especially designed for incorporation into a iiow line in a well. In a practical application of the valve assembly a number of said assemblies will be incorporated into the ow line beneath the level of the liquid in the well casing and will be spaced a selected distance apart vertically so that as the pressure of the liquid in the well varies the valve assemblies will open and close to admit liquid from the well into the flow line in accordancewith variations in pressure applied against the surface of the liquid in the well casing.
Other objects and advantages will be apparent from the following specification which is illustrated by the accompanying drawing wherein:
Figure l is an elevational view of a well casing in a well, shown partly in section and showing the iiow line therein.
Figure 2 is an elevational View, partly in section. of one type of the assembly.
Figure 3 is an enlarged, fragmentary sectional view thereof.
Figure 4 is an enlarged fragmentary side elevation thereof. l y
Figure 5 is an elevational View, partly in section of another embodiment of the assembly and,
Figure 6 is an enlarged, fragmentary, sectional view of the embodiment shown in Figure 5.
Referring now more particularly to the drawings the numeral I designates a conventional well casing having the well head 2 fixed thereon and provided with an inlet pressure line 3.
Within the well casing there is a flow line 4 whose lower end extends down into the well and is submerged in the liquid in the well casing.
Incorporated into the lower end of the iiow line there are a plurality of flow valve assemblies indicated generally by the numeral 5. These assemblies are spaced apart a selected distance, usually about five hundred feet apart although they may be spaced further apart or closer together as the circumstances may require.
Each assembly includes a tubular valve casing 6 forming a coupling member to couple the adjacent sections of the iiow line. At one side the valve casing has an external recess 'I preferably circular in shape and leading inwardly from the recess through the wall of the casing 6 there are the spaced inlet ports 8, four of said inlet ports being shown.
Fitted in the recess 1 there is a valve disc 9 provided with an inside annular groove I0.
In this groove I0 and fitted against the bottom of the recess 'I there is a yieldable member, pref-y erably a coil spring II.
The disc 9 has a central inlet opening I2 and the inner side of the disc is counter-sunk around the opening thus forming an inside valve seat.
Between said seat and the bottom of the recess 1 there is a ball valve I3 which is located between the openings 8.
The disc 9 is retained against detachment in any preferred manner. As shown there are the oppositely disposed screws I4 which are screwed into the casing 6 and whose heads overlap the disc 9 as more clearly shown in Figures 3 and 4.
The spring II normally holds the seat disc 9 outwardly thus maintaining the seat open but external pressure in the well casing, which may overcome the pressure of the spring I I, may force the disc inwardly so that the seat will come into close contact with the valve I3 and close the inlet opening I2.
The valve seat disc 9 also has an external, annular groove I5 therearound to receive a ring I6 to prevent leakage past said disc.
In the form shown in Figures 5 and 6 the valve casing 6 has the inlet ports 8a similar, in purpose, to the ports 8 and between said ports 8a there is xed to the casing a valve I 3a having an outer oval head.
In this embodiment the casing 6 also has the countersunk recess 'I and spanning this recess there is a circular diaphragm 9a whose margins are countersunk into, and secured to, the valve casing around said recess.
The diaphragm 9a is preferably corrugated circularly so as to give the diaphragm the required exibility.
This diaphragm has a central valve seat with an inlet opening I2a therethrough opposite the valve I3a and normally spaced outwardly from the valve so as to remain open.
In case of excessive outside pressure the diaphragm 9a will be forced inwardly by the pressure, moving the seat against the valve and closing the opening I2a.
In both forms of the valve assembly, if the outside pressure is equal to or less than the pressure within the line the valves will remain open. But in case the pressure outside of the disc 9 or the diaphragm 9a is greater than the pressure within the line the corresponding valve will be closed by said outside pressure.
As shown each form of the valve assembly is equipped with only one valve but, as is obvious, each assembly may have two or more valves incorporated into the casing similar to those shown.
As hereinabove stated the valve assemblies will be incorporated into the ow line as shown in Figure 1 all beneath the level of the liquid standing in the well casing l.
Fluid pressure is then applied through the pressure line 3 into the well casing against the upper surface of the liquid of the well andthe liquid in the well casing will be forced in through the passageways I2, 8 or I 2a, 8a into the flow line so as to force the liquid in the flow line upwardly and thel flow will continue until the pressure of the liquid about the upper valve assembly is greater than the pressure in the flow line whereupon the disc 9, `or diaphragm Sa, will be forced inwardly to close the valve and the fluid in the well casing, under the influence of the pressure against the liquid, will flow through the next succeeding valve assembly beneath, thus forcing the liquid on upwardly until said last mentioned Valve assembly is closed, as hereinabove stated, and thereafter liquid will be forced inwardly through the next succeeding valve assembly beneath; however, the pressures Within the flow line and within the casing outside the ilow line vary depending upon conditions in the well. For example, the liquid level in the well casing may be forced downwardly beneath a valve assembly and the gas used as an operating iluid may flow in through said valve assembly and eject a quantity of liquid from the flow line above or break through the liquid in the ilow line above, thus allowing the liquid above in the flow line to fall :back down and temporarily increase the pressure of the liquid in the flow line.
In other words, the pressure of the liquid in the ow line within a valve assembly and the pressure of the liquid in the valve casing outside of a valve assembly may vary. So a number of valve assemblies should be distributed along the flow line beneath the normal level of the liquid in the well casing to the end that if one valve assembly is closed another assembly may be open to permit the pressure of the operating iluid to be at all times effective in forcing liquid from the well casing through -one or the other of the valve assemblies to permit a constant upward ow of liquid through the ow line. to be discharged at the ground surface through ordinary ow equipment of any selected construction.
What I claim is:
1. A ow valve assembly comprising, a tubular valve casingv having a side inlet port, a movable valve seat carrier on the casing and. sealed therewith and having an opening therethrough providing a valve seat and through which outside fluid may be admitted to said port and an inwardly opening recess surrounding said seat, a
valve loosely mounted on the carrier and guidingly engageable with the carrier within said recess, abutment means on the casing engageafble by the valve to limit inward movement of the valve to cause the seat to sealingly engage the valve to close the valve seat opening and exclude said fluid upon inward movement of the carrier, and means normally holding the carrier in its outer position to maintain the seat open.
2. A ovv valve assembly comprising, a tubular valve casing having a side inlet port, a yieldably mounted movable valve seat carrier on the casing and sealed therewith and having an opening providing a valve seat through which outside fluid may bev admitted to said port and an inwardly opening recess surrounding said opening, and a valve loosely mounted on said carrier and in guiding engagement with the recessed portion of the carrier, abutment means on the casing engageable by the valve to limit inward movement of the valve to cause the seat to sealingly engage the valve to close the seat opening and exclude said iluid upon inward movement of the carrier.l
3. A now valve assembly comprising, a tubular valve casing having a side inlet port and an external recess around the port, a movable valve seat carrier spanning said recess and in sealed relation with the casing, said carrier having an opening through which outside iluid may 'be admitted to said port and an internal recess about the opening, and a valve loosely mounted in the internal recess enclosed by said carrier and in guiding engagement with the carrier within said internal recess, abutment means on the casing engageableby the valve tolimit inward movew ment of the valve to cause the carrier to sealingly engage the valve about said opening to close said opening and exclude said fluid upon inward movement of the carrier.
4. A flow valve assembly comprising, a tubular valve casing having a side inlet iport and having an external recess around said port, a movable valve seat carrier on the casing enclosing said recess and having an inlet opening and an internal recess surrounding said opening, a valve loosely mounted in the internal recess and enclosed by said carrier and in guiding engagement with the carrier within said internal recess, abutment means on the casing engageable by the valve to limit inward movement lof the valve to cause the carrier to sealingly engage the valve about said opening to close said opening and exclude said uid upon inward movement of the carrier.
WALTER. L. CHURCH.
REFERENCES CITED The following references are of record in the ille of this patent:
UNITED STATES PATENTS Number Name Date 486,501 Phillippi Nov. 22, 1892 1,038,527 Coleman Sept. 17, 1912 1,147,099 Keitel July 20, 1915 1,203,551 Mll'itz Oct, 31, 1916 1,767,201 Boynton June 24, 1930 2,307,016 Boynton Jan. 5, 1943
US81143A 1949-03-12 1949-03-12 Flow valve for fluid lift pumps Expired - Lifetime US2624362A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176712A (en) * 1961-10-03 1965-04-06 Ramsden Clement Non-return valve
US4575044A (en) * 1984-12-20 1986-03-11 Otis Engineering Corporation Lubricator section
WO2011067371A1 (en) * 2009-12-03 2011-06-09 Welltec A/S Inflow control in a production casing
US20120234556A1 (en) * 2009-12-03 2012-09-20 Hallundbaek Joergen Downhole artificial lifting system
GB2574843A (en) * 2018-06-19 2019-12-25 Swellfix Uk Ltd Downhole flow control devices and methods

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US486501A (en) * 1892-11-22 Check-valve
US1038527A (en) * 1912-02-24 1912-09-17 Conrad Hubert Needle-valve.
US1147099A (en) * 1914-04-10 1915-07-20 Otto Keitel Pressure-regulator for fermenting liquids.
US1203551A (en) * 1911-02-24 1916-10-31 Gearless Automatic Pump Company Diaphragm-valve.
US1767201A (en) * 1927-05-06 1930-06-24 Boynton Alexander Stage-lift flowing device
US2307016A (en) * 1939-12-08 1943-01-05 Boynton Alexander Differential stage lift flow device, diaphragm type

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US486501A (en) * 1892-11-22 Check-valve
US1203551A (en) * 1911-02-24 1916-10-31 Gearless Automatic Pump Company Diaphragm-valve.
US1038527A (en) * 1912-02-24 1912-09-17 Conrad Hubert Needle-valve.
US1147099A (en) * 1914-04-10 1915-07-20 Otto Keitel Pressure-regulator for fermenting liquids.
US1767201A (en) * 1927-05-06 1930-06-24 Boynton Alexander Stage-lift flowing device
US2307016A (en) * 1939-12-08 1943-01-05 Boynton Alexander Differential stage lift flow device, diaphragm type

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176712A (en) * 1961-10-03 1965-04-06 Ramsden Clement Non-return valve
US4575044A (en) * 1984-12-20 1986-03-11 Otis Engineering Corporation Lubricator section
WO2011067371A1 (en) * 2009-12-03 2011-06-09 Welltec A/S Inflow control in a production casing
CN102639811A (en) * 2009-12-03 2012-08-15 韦尔泰克有限公司 Inflow control in a production casing
US20120234556A1 (en) * 2009-12-03 2012-09-20 Hallundbaek Joergen Downhole artificial lifting system
CN102639811B (en) * 2009-12-03 2015-09-30 韦尔泰克有限公司 For the production of the ramp metering of sleeve pipe
US9267363B2 (en) * 2009-12-03 2016-02-23 Welltec A/S Downhole artificial lifting system
US9353607B2 (en) 2009-12-03 2016-05-31 Welltec A/S Inflow control in a production casing
GB2574843A (en) * 2018-06-19 2019-12-25 Swellfix Uk Ltd Downhole flow control devices and methods
WO2019243815A1 (en) * 2018-06-19 2019-12-26 Swellfix Uk Limited Downhole flow control devices and methods
GB2574843B (en) * 2018-06-19 2021-01-27 Swellfix Uk Ltd Downhole flow control devices and methods
US11536120B2 (en) 2018-06-19 2022-12-27 Swellfix Uk Limited Downhole flow control devices and methods

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