EP3164569B1 - Hydraulic lock compensating dummy valve - Google Patents
Hydraulic lock compensating dummy valve Download PDFInfo
- Publication number
- EP3164569B1 EP3164569B1 EP15736149.4A EP15736149A EP3164569B1 EP 3164569 B1 EP3164569 B1 EP 3164569B1 EP 15736149 A EP15736149 A EP 15736149A EP 3164569 B1 EP3164569 B1 EP 3164569B1
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- EP
- European Patent Office
- Prior art keywords
- certain embodiments
- valve
- gas lift
- dummy
- 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.)
- Not-in-force
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- 239000012530 fluid Substances 0.000 claims description 32
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 230000009977 dual effect Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 90
- 239000007788 liquid Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000007789 sealing Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Images
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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/063—Valve or closure with destructible element, e.g. frangible disc
-
- 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
- E21B43/122—Gas lift
- E21B43/123—Gas lift valves
Definitions
- the present disclosure relates generally to dummy valves. More specifically, in certain embodiments the present disclosure relates to hydraulic lock compensating dummy valves for use in gas lift and associated methods and systems.
- Gas-lift wells have been in use since the 1800's and have proven particularly useful in increasing efficient rates of oil production where the reservoir natural lift is insufficient.
- natural gas produced in the oil field is compressed and injected in an annular space between the casing and tubing and is directed from the casing into the tubing to provide a "lift" to the tubing fluid column for production of oil out of the tubing.
- the tubing can be used for the injection of the lift-gas and the annular space used to produce the oil, this is rare in practice.
- gas-lift well uses mechanical, bellows-type gas-lift valves attached to the tubing to regulate the flow of gas from the annular space into the tubing string. Examples of such gas-lift valves are described in U.S. Patent Nos. 5,782,261 and 5,425,425 , the entireties of which are hereby incorporated by reference.
- the bellows is preset or pre-charged to a certain pressure such that the valve permits communication of gas out of the annular space and into the tubing at the pre-charged pressure.
- each valve is selected by a well engineer depending upon the position of the valve in the well, the pressure head, the physical conditions of the well downhole, and a variety of other factors, some of which are assumed or unknown, or will change over the production life of the well.
- gas-lift wells are described in U.S. Patent No. 6,715,550 and U.S. Patent Application Publication No. 2014/0041863 , the entireties of which are incorporated by reference. Still other types of gas-lift wells utilize dummy valves. Examples of such gas-lift wells utilizing dummy valves are described in U.S. Patent No. 8,162,060 , the entirety of which is hereby incorporated by reference.
- Dual pocket side pocket mandrels are often used in offshore wells where it is desired or required that there must be no communication between the tubing and the annular space during the act of gas lift valve intervention.
- the dual pocket mandrel allows for the operating gas lift valve to be pulled while leaving the barrier isolation valve in place thus allowing for now communication of tubing to annular.
- the act of pulling the operating valve out of its pocket in the mandrel may allow for the introduction of tubing fluid into the valve pocket and space between the operating valve and barrier isolation valve. Once the operating valve is replaced with a traditional dummy valve the issue of hydraulic locking may exist.
- the fluid trapped in the space between the barrier isolation valve and the dummy valve, being non-compressible, may not allow for the remainder of the dummy valve to be driven into its pocket.
- Traditional dummy valves have no means of dealing with this trapped fluid.
- the present disclosure relates generally to dummy valves. More specifically, in certain embodiments the present disclosure relates to hydraulic lock compensating dummy valves for use in gas lift and associated methods and systems.
- the present disclosure provides a dummy valve comprising: a housing and a rupture disc disposed within the housing, wherein the housing and the rupture disc define a first internal chamber.
- the present disclosure provides a gas lift system comprising: a gas lift mandrel comprising a first pocket and a second pocket; a gas lift valve disposed within the first pocket; and a dummy valve disposed within the second pocket, wherein the dummy valve comprises a housing and a rupture disc disposed within the housing, wherein the housing and the rupture disc define a first internal chamber.
- the present disclosure provides a method comprising: providing a gas lift mandrel, wherein the gas lift mandrel comprises a first pocket and a second pocket and placing a dummy valve within the second pocket, wherein the dummy valve comprises a housing and a rupture disc disposed within the housing, wherein the housing and the rupture disc define a first internal chamber.
- the present disclosure relates generally to dummy valves. More specifically, in certain embodiments the present disclosure relates to hydraulic lock compensating dummy valves for use in gas lift and associated methods and systems.
- dummy valves discussed herein may provide a means to deal with trapped liquid in dual pocket mandrels.
- Other potential advantages of the dummy valves discussed herein are that they do not rely on shear pins, thus minimizing the chances of damaging the dummy valve when reinstalling it into the pocket.
- Figure 1 illustrates a dummy valve 100 in accordance in accordance with certain embodiments of the present disclosure.
- dummy valve 100 may comprise a housing 110 and a rupture disc 120.
- housing 110 may be of a generally cylindrical shape. In certain embodiments, housing 110 may have a diameter in the range of from 0.5 inches to 3 inches. In certain embodiments, housing 110 may define internal chambers 111A and 111B. In certain embodiments, internal chamber 111A may be the chamber defined by housing 110 above rupture disc 120. In certain embodiments, internal chamber 111B may be the chamber defined by housing 110 below rupture disc 120. In certain embodiments, internal chamber 111A may be large enough to hold all of the trapped fluid in a gas lift mandrel between the first and second pockets of the mandrel and also any fluid disposed within internal chamber 111B.
- rupture disc 120 may be disposed directly below internal chamber 111 of housing 110. In certain embodiments, rupture disc 120 may be threaded to housing 110. In certain embodiments, rupture disc 120 may comprise a housing 121 and a rupture material 122. In certain embodiments, housing 121 may be constructed out of any suitable housing material such as stainless steel and Incoly. In certain embodiments, rupture disc 120 may have a diameter between 0.5 inches to 3 inches. In certain embodiments, the rupture disc may have a diameter less than the diameter of the housing. Suitable examples of rupture discs include rupture discs commercially available from Fike Inc.
- rupture disc 120 may be a non-fragmenting disc. In certain embodiments, the rupture disc 120 may be a fragmenting disc. In certain embodiments, rupture disc 120 may be pressure and temperature rated to burst at a set mandrel depth when run into the second pocket.
- rupture disc 120 may prevent the flow of fluid (gas, liquid, or a combination thereof) into internal chamber 111A. In other embodiments, for example when rupture disc 120 is ruptured, fluid (gas, liquid, or a combination thereof) may flow into internal chamber 111A through rupture disc 120.
- housing 110 may further comprise an upper packer 130, latch thread section 140, screen portion 150, and lower packer 160.
- upper packer 130 may be disposed above internal chamber 111A and surround housing 110. In certain embodiments, upper packer 130 may provide sealing contact with a pocket of a gas lift mandrel when dummy valve 100 is disposed therein. In certain embodiments, upper packer 130 may comprise any conventional packer material.
- latch thread section 140 may be disposed above upper packer 130. In certain embodiments, latch thread section 140 may comprise threads 141. In certain embodiments, dummy valve 100 may be capable of being removed and/or placed within a mandrel pocket utilizing latch thread section 140.
- screen portion 150 may be disposed below rupture disc 120.
- screen portion 150 may be constructed out of any suitable screen material, including stainless steel and Incloy.
- housing 110 may comprise one or more holes rather than a screen portion 150.
- screen portion 150 (or alternatively the one or more holes) may permit fluid (gas, liquid, or a combination thereof) to flow outside of dummy valve 100 into chamber 111B of dummy valve 100.
- screen portion 150 may permit fluid (gas, liquid, or a combination thereof) to flow from outside dummy valve 100 into internal chamber 111B of dummy valve 100 and then into internal chamber 111A.
- screen portion 150 may permit fluid (gas, liquid, or a combination thereof) to flow from outside of dummy valve 100 into internal chamber 111B of dummy valve 100.
- lower packer 160 may be disposed below screen portion 150 and surround housing 110. In certain embodiments, lower packer 160 may provide sealing contact with a pocket of a gas lift mandrel when dummy valve 100 is disposed therein. In certain embodiments, lower packer 160 may comprise any conventional packer material.
- housing 110 may further comprise outlet 170.
- outlet 170 may permit fluid to fluid from inside internal chamber 111B of dummy valve 100 to outside of dummy valve 100.
- dummy valve 100 may be capable of being placed within a pocket of a gas lift mandrel.
- gas lift system 1000 may comprise a gas lift mandrel 1050, a dummy valve 1100, a gas lift valve 1200, a well bore 1300, and production tubing 1400.
- well bore 1300 may be lined with a casing (not illustrated in Figure 2 ).
- well bore 1300 and production tubing 1400 may define an annulus.
- production tubing 1400 and the casing may define an annulus.
- gas lift mandrel 1050 may be installed on production tubing 1400.
- gas lift mandrel 1050 may comprise a first pocket 1060, a second pocket 1070, and an intermediate section 1080.
- first pocket 1060 and second pocket 1070 may be side by side.
- first pocket 1060 and second pocket 1070 may be inline.
- intermediate section 1080 may be defined by first pocket 1060 and second pocket 1070.
- first pocket 1060 may comprise an opening 1061, one or more injection ports 1062, and an opening 1063.
- opening 1061 may permit the placement of a gas lift valve 1200 within first pocket 1060.
- a gas lift valve 1200 may be placed within first pocket 1060 by sliding the gas lift valve 1200 through opening 1061.
- one or more injection ports 1062 may permit the flow of fluid (gas, liquid, or a combination hereof) from an annulus defined by well bore 1300 and production tubing 1400 into first pocket 1060.
- the one or more injection ports 1062 may comprise four to ten separate injection ports.
- the one or more injection ports 1062 may be 0.5 inches in diameter.
- opening 1063 may permit the flow of fluid from first pocket 1060 to intermediate section 1080.
- a gas lift valve 1200 may be disposed within first pocket 1060.
- gas lift valve 1200 may comprise any retrievable gas lift valve. Examples of suitable retrievable gas lift valves include barrier isolation valves.
- gas lift valve 1200 may comprise a housing 1210.
- housing 1210 may be of a generally cylindrical shape.
- housing 1210 may have an inner diameter in the range of from 1 inch to 1.5 inches.
- housing 1210 may define hollow defining an internal chamber 1211.
- internal chamber 1211 may be defined by housing 1210.
- housing 1210 may further comprise an upper packer 1230, latch thread section 1240, one or more openings 1250, lower packer 1260, and outlet 1270.
- upper packer 1230 may be disposed above internal chamber 1211 and surround housing 1210. In certain embodiments, upper packer 1230 may provide sealing contact with a pocket of a gas lift mandrel when gas lift valve 1200 is disposed therein. In certain embodiments, upper packer 1230 may comprise any conventional packer material.
- latch thread section 1240 may be disposed above upper packer 1230. In certain embodiments, latch thread section 1240 may comprise threads 1241. In certain embodiments, gas lift valve 1200 may be capable of being removed and/or placed within a mandrel pocket utilizing latch thread section 1240. For example, a tool may be attached the latch thread section 1240 and utilized to install or remove the gas lift valve 1200 from first pocket 1060.
- one or more openings 1250 may be disposed on housing 1210 between upper packer 1230 and lower packer 1260. In certain embodiments, the one or openings 1250 may be a screen. In certain embodiments, the one or more openings 1250 may permit fluid (gas, liquid, or a combination thereof) to flow from outside of gas lift valve 1200 into gas lift valve 1200. In certain embodiments, one or more openings 1250 may permit fluid (gas, liquid, or a combination thereof) to flow from outside gas lift valve 1200 into internal chamber 1211 of gas lift valve 1200. In certain embodiments, one or more openings 1250 may permit fluid (gas, liquid, or a combination thereof) to flow from outside of gas lift valve 1200 into gas lift valve 1200 and then through outlet 1270.
- lower packer 1260 may be disposed below one or more openings 1250 and surround housing 1210. In certain embodiments, lower packer 1260 may provide sealing contact with a pocket of a gas lift mandrel when gas lift valve 1200 is disposed therein. In certain embodiments, lower packer 1260 may comprise any conventional packer material.
- outlet 1270 may be disposed below lower packer 1260. In certain embodiments, outlet 1270 may permit the one way flow of fluid (gas, liquid, or a combination thereof) from within gas lift valve 1200 to outside of gas lift valve 1200. In certain embodiments, outlet 1270 may comprise a directional one way reverse flow check.
- gas lift valve 1200 may be placed within first pocket 1060. In certain embodiments, gas lift valve 1200 may be placed within first pocket 1060 in a manner such that upper packer 1230 is above injection ports 1062 and lower packer 1260 is below injection ports 1062. In certain embodiments, gas lift valve 1200 may be placed within first pocket 1060 in a manner such that fluid injected into injection ports 1062 enters the internal chamber 1211 of gas lift valve 1200 and flows through opening 1063 into intermediate section 1080 of gas lift mandrel.
- second pocket 1070 may comprise an opening 1071 and an opening an opening 1073.
- opening 1071 may permit the placement of a dummy valve 1100 within second pocket 1070.
- a dummy valve 1100 may be placed within second pocket 1070 by sliding the dummy valve 1100 through opening 1071.
- opening 1073 may permit the flow of fluid from second pocket 1070 into the production tubing 1400.
- dummy valve 1100 may be disposed within second pocket 1070. In certain embodiments, dummy valve 1100 may comprise and combination of features discussed above with respect to dummy valve 100. In certain embodiments, dummy valve 1100 may comprise a housing 1110 and a rupture disc 1120. In certain embodiments, housing 1110 may define a first internal chamber 1111A and a second internal chamber 1111B. In certain embodiments, first internal chamber 1111A may be at least half as large as the combined volume of intermediate section 1080 and second internal chamber 1111B. In certain embodiments, first internal chamber 1111A may be defined by as the internal volume of dummy valve 1100 above rupture disc 1120. In certain embodiments, second internal chamber 1111B may be defined by as the internal volume of dummy valve 1100 below rupture disc 1120.
- rupture disc 1120 may be disposed directly below first internal chamber 1111A of housing 1110. In certain embodiments, rupture disc 1120 may comprise any combination of features discussed above with respect to rupture disc 120. In certain embodiments, rupture disc 1120 may comprise a housing 1121 and a rupture material 1122. In certain embodiments, for example when rupture disc 1120 is not ruptured, rupture disc 1120 may prevent the flow of fluid (gas, liquid, or a combination thereof) from intermediate section 1080 into first internal chamber 1111A. In other embodiments, for example when rupture disc 1120 is ruptured, fluid (gas, liquid, or a combination thereof) may flow from intermediate section 1080 into first internal chamber 1111A through rupture disc 1120.
- housing 1110 may further comprise an upper packer 1130, latch thread section 1140, screen portion 1150, and lower packer 1160.
- upper packer 1130 may be disposed above internal chamber 1111A and surround housing 1110. In certain embodiments, upper packer 1130 may provide sealing contact with second pocket 1070 when dummy valve 1100 is disposed therein.
- latch thread section 1140 may be disposed above upper packer 1130. In certain embodiments, latch thread section 1140 may comprise threads 1141. In certain embodiments, dummy valve 1100 may be capable of being removed and/or placed within second pocket 1070 utilizing latch thread section 1140.
- screen portion 1150 may be disposed below rupture disc 1120. In certain embodiments, screen portion 1150 may comprise any combination of features discussed above with respect to screen portion 150. In other embodiments, not illustrated in Figure 2 , housing 1110 may comprise one or more holes rather than a screen portion 1150. In certain embodiments, screen portion 1150 (or alternatively the one or more holes) may permit fluid (gas, liquid, or a combination thereof) to flow from intermediate section 1080 into first internal chamber 1111B of dummy valve 1100.
- screen portion 1150 may permit fluid (gas, liquid, or a combination thereof) to flow from intermediate section 1080 into first internal chamber 1111A of dummy valve 1100.
- lower packer 1160 may be disposed below screen portion 1150 and surround housing 1110. In certain embodiments, lower packer 1160 may comprise any of the features discussed above with respect to lower packer 160. In certain embodiments, lower packer 1160 may provide sealing contact with second pocket 1070 when dummy valve 1100 is disposed therein.
- housing 1110 may further comprise outlet 1170.
- outlet 1170 may permit fluid to fluid from inside second internal chamber 1111B of dummy valve 1100 to outside of dummy valve 1100.
- dummy valve 1100 may be capable of being placed within a pocket of a gas lift mandrel. In certain embodiments, dummy valve 1100 may be placed within second pocket 1070. In certain embodiments, dummy valve 1100 may be placed within second pocket 1070 in a manner such that upper packer 1130 is above intermediate section 1080 and lower packer 1160 is below intermediate section 1080. In certain embodiments, dummy valve 1100 may be placed within second pocket 1070 in a manner such that fluid from intermediate section 1080 enters the second internal chamber 1111B of dummy valve 1100 and flows through into production tubing 1400 through outlet 1170.
- the present disclosure provides a method comprising: providing a gas lift system.
- the gas lift system may comprise any combination of features discussed above with respect to gas lift system 1000.
- the present disclosure provides a method comprising: providing a gas lift mandrel.
- the gas lift mandrel may comprise any combination of features discussed above with respect to gas lift mandrel 1050.
- the gas lift mandrel may comprise a first pocket, a second pocket, and an intermediate section.
- the gas lift mandrel may comprise a gas lift valve disposed within the first pocket and/or a dummy valve disposed within the second pocket.
- the dummy valve may comprise a rupture disc and one or more internal chambers.
- the gas lift valve may comprise any combination of features discussed above with respect to gas lift valve 1200.
- the dummy valve may comprise any combination of features discussed above with respect to dummy valve 1100 and/or dummy valve 100.
- the method may further comprise running the gas lift mandrel into a subterranean formation.
- a gas lift valve and a dummy valve may be placed within the first and second pockets of the gas lift mandrel before it is run into the subterranean formation.
- a gas lift valve and/or a dummy valve may be placed within the first and second pockets of the gas lift mandrel after it is run into a subterranean formation.
- the method may further comprise removing the gas lift valve from the gas lift mandrel. In other embodiments, the method may further comprise installing a gas lift valve into the gas lift mandrel while the gas lift mandrel is within a subterranean formation.
- the method may further comprise allowing the rupture disc to rupture.
- the rupture disc may rupture while the gas lift valve is being placed within the first pocket of the gas lift mandrel.
- fluid that is trapped within the intermediate section of the gas lift mandrel may flow into the first internal chamber of the dummy valve.
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Description
- This application claims the benefit of
U.S. Provisional Application No. 62/019,566, filed July 1, 2014 - The present disclosure relates generally to dummy valves. More specifically, in certain embodiments the present disclosure relates to hydraulic lock compensating dummy valves for use in gas lift and associated methods and systems.
- Gas-lift wells have been in use since the 1800's and have proven particularly useful in increasing efficient rates of oil production where the reservoir natural lift is insufficient. Typically, in a gas-lift oil well, natural gas produced in the oil field is compressed and injected in an annular space between the casing and tubing and is directed from the casing into the tubing to provide a "lift" to the tubing fluid column for production of oil out of the tubing. Although the tubing can be used for the injection of the lift-gas and the annular space used to produce the oil, this is rare in practice.
- One common type of gas-lift well uses mechanical, bellows-type gas-lift valves attached to the tubing to regulate the flow of gas from the annular space into the tubing string. Examples of such gas-lift valves are described in
U.S. Patent Nos. 5,782,261 and5,425,425 , the entireties of which are hereby incorporated by reference. In a typical bellows-type gas-lift valve, the bellows is preset or pre-charged to a certain pressure such that the valve permits communication of gas out of the annular space and into the tubing at the pre-charged pressure. The pressure charge of each valve is selected by a well engineer depending upon the position of the valve in the well, the pressure head, the physical conditions of the well downhole, and a variety of other factors, some of which are assumed or unknown, or will change over the production life of the well. - Other types of gas-lift wells are described in
U.S. Patent No. 6,715,550 andU.S. Patent Application Publication No. 2014/0041863 , the entireties of which are incorporated by reference. Still other types of gas-lift wells utilize dummy valves. Examples of such gas-lift wells utilizing dummy valves are described inU.S. Patent No. 8,162,060 , the entirety of which is hereby incorporated by reference. - Dual pocket side pocket mandrels are often used in offshore wells where it is desired or required that there must be no communication between the tubing and the annular space during the act of gas lift valve intervention. The dual pocket mandrel allows for the operating gas lift valve to be pulled while leaving the barrier isolation valve in place thus allowing for now communication of tubing to annular. The act of pulling the operating valve out of its pocket in the mandrel may allow for the introduction of tubing fluid into the valve pocket and space between the operating valve and barrier isolation valve. Once the operating valve is replaced with a traditional dummy valve the issue of hydraulic locking may exist. As the dummy valve is pushed into its pocket past its lowest set of packing elements, the fluid trapped in the space between the barrier isolation valve and the dummy valve, being non-compressible, may not allow for the remainder of the dummy valve to be driven into its pocket. Traditional dummy valves have no means of dealing with this trapped fluid.
- It is desirable to develop a dummy valve that is capable of holding and dealing with the trapped fluid between the pockets.
- The present disclosure relates generally to dummy valves. More specifically, in certain embodiments the present disclosure relates to hydraulic lock compensating dummy valves for use in gas lift and associated methods and systems.
- In one embodiment, the present disclosure provides a dummy valve comprising: a housing and a rupture disc disposed within the housing, wherein the housing and the rupture disc define a first internal chamber.
- In another embodiment, the present disclosure provides a gas lift system comprising: a gas lift mandrel comprising a first pocket and a second pocket; a gas lift valve disposed within the first pocket; and a dummy valve disposed within the second pocket, wherein the dummy valve comprises a housing and a rupture disc disposed within the housing, wherein the housing and the rupture disc define a first internal chamber.
- In another embodiment, the present disclosure provides a method comprising: providing a gas lift mandrel, wherein the gas lift mandrel comprises a first pocket and a second pocket and placing a dummy valve within the second pocket, wherein the dummy valve comprises a housing and a rupture disc disposed within the housing, wherein the housing and the rupture disc define a first internal chamber.
- A more complete and thorough understanding of the present embodiments and advantages thereof may be acquired by referring to the following description taken in conjunction with the accompanying drawings.
-
Figure 1 illustrates a dummy valve in accordance with certain embodiments of the present disclosure. -
Figure 2 illustrates a gas lift mandrel in accordance with certain embodiments of the present disclosure. - The features and advantages of the present disclosure will be readily apparent to those skilled in the art. While numerous changes may be made by those skilled in the art, such changes are within the spirit of the disclosure.
- The description that follows includes exemplary apparatuses, methods, techniques, and/or instruction sequences that embody techniques of the inventive subject matter. However, it is understood that the described embodiments may be practiced without these specific details.
- The present disclosure relates generally to dummy valves. More specifically, in certain embodiments the present disclosure relates to hydraulic lock compensating dummy valves for use in gas lift and associated methods and systems.
- One potential advantage of the dummy valves discussed herein is that they may provide a means to deal with trapped liquid in dual pocket mandrels. Other potential advantages of the dummy valves discussed herein are that they do not rely on shear pins, thus minimizing the chances of damaging the dummy valve when reinstalling it into the pocket.
- Referring now to
Figure 1, Figure 1 illustrates adummy valve 100 in accordance in accordance with certain embodiments of the present disclosure. In certain embodiments,dummy valve 100 may comprise ahousing 110 and arupture disc 120. - In certain embodiments,
housing 110 may be of a generally cylindrical shape. In certain embodiments,housing 110 may have a diameter in the range of from 0.5 inches to 3 inches. In certain embodiments,housing 110 may defineinternal chambers internal chamber 111A may be the chamber defined byhousing 110 aboverupture disc 120. In certain embodiments,internal chamber 111B may be the chamber defined byhousing 110 belowrupture disc 120. In certain embodiments,internal chamber 111A may be large enough to hold all of the trapped fluid in a gas lift mandrel between the first and second pockets of the mandrel and also any fluid disposed withininternal chamber 111B. - In certain embodiments,
rupture disc 120 may be disposed directly below internal chamber 111 ofhousing 110. In certain embodiments,rupture disc 120 may be threaded to housing 110. In certain embodiments,rupture disc 120 may comprise ahousing 121 and arupture material 122. In certain embodiments,housing 121 may be constructed out of any suitable housing material such as stainless steel and Incoly. In certain embodiments,rupture disc 120 may have a diameter between 0.5 inches to 3 inches. In certain embodiments, the rupture disc may have a diameter less than the diameter of the housing. Suitable examples of rupture discs include rupture discs commercially available from Fike Inc. - In certain embodiments,
rupture disc 120 may be a non-fragmenting disc. In certain embodiments, therupture disc 120 may be a fragmenting disc. In certain embodiments,rupture disc 120 may be pressure and temperature rated to burst at a set mandrel depth when run into the second pocket. - In certain embodiments, for example when
rupture disc 120 is not ruptured,rupture disc 120 may prevent the flow of fluid (gas, liquid, or a combination thereof) intointernal chamber 111A. In other embodiments, for example whenrupture disc 120 is ruptured, fluid (gas, liquid, or a combination thereof) may flow intointernal chamber 111A throughrupture disc 120. - In certain embodiments,
housing 110 may further comprise anupper packer 130,latch thread section 140,screen portion 150, andlower packer 160. - In certain embodiments,
upper packer 130 may be disposed aboveinternal chamber 111A andsurround housing 110. In certain embodiments,upper packer 130 may provide sealing contact with a pocket of a gas lift mandrel whendummy valve 100 is disposed therein. In certain embodiments,upper packer 130 may comprise any conventional packer material. - In certain embodiments,
latch thread section 140 may be disposed aboveupper packer 130. In certain embodiments,latch thread section 140 may comprisethreads 141. In certain embodiments,dummy valve 100 may be capable of being removed and/or placed within a mandrel pocket utilizinglatch thread section 140. - In certain embodiments,
screen portion 150 may be disposed belowrupture disc 120. In certain embodiments,screen portion 150 may be constructed out of any suitable screen material, including stainless steel and Incloy. In other embodiments, not illustrated inFigure 1 ,housing 110 may comprise one or more holes rather than ascreen portion 150. In certain embodiments, screen portion 150 (or alternatively the one or more holes) may permit fluid (gas, liquid, or a combination thereof) to flow outside ofdummy valve 100 intochamber 111B ofdummy valve 100. In certain embodiments, for example whenrupture disc 120 is ruptured, screen portion 150 (or alternatively the one or more holes) may permit fluid (gas, liquid, or a combination thereof) to flow fromoutside dummy valve 100 intointernal chamber 111B ofdummy valve 100 and then intointernal chamber 111A. In certain embodiments, for example whenrupture disc 120 is not ruptured, screen portion 150 (or alternatively the one or more holes) may permit fluid (gas, liquid, or a combination thereof) to flow from outside ofdummy valve 100 intointernal chamber 111B ofdummy valve 100. - In certain embodiments,
lower packer 160 may be disposed belowscreen portion 150 and surroundhousing 110. In certain embodiments,lower packer 160 may provide sealing contact with a pocket of a gas lift mandrel whendummy valve 100 is disposed therein. In certain embodiments,lower packer 160 may comprise any conventional packer material. - In certain embodiments,
housing 110 may further compriseoutlet 170. In certain embodiments,outlet 170 may permit fluid to fluid from insideinternal chamber 111B ofdummy valve 100 to outside ofdummy valve 100. - In certain embodiments,
dummy valve 100 may be capable of being placed within a pocket of a gas lift mandrel. - Referring now to
Figure 2, Figure 2 illustratesgas lift system 1000. In certain embodiments,gas lift system 1000 may comprise agas lift mandrel 1050, adummy valve 1100, agas lift valve 1200, awell bore 1300, andproduction tubing 1400. - In certain embodiments, well bore 1300 may be lined with a casing (not illustrated in
Figure 2 ). In certain embodiments, well bore 1300 andproduction tubing 1400 may define an annulus. In other embodiments,production tubing 1400 and the casing (not illustrated inFigure 2 ) may define an annulus. - In certain embodiments,
gas lift mandrel 1050 may be installed onproduction tubing 1400. In certain embodiments,gas lift mandrel 1050 may comprise afirst pocket 1060, asecond pocket 1070, and anintermediate section 1080. In certain embodiments,first pocket 1060 andsecond pocket 1070 may be side by side. In other embodiments,first pocket 1060 andsecond pocket 1070 may be inline. In certain embodiments,intermediate section 1080 may be defined byfirst pocket 1060 andsecond pocket 1070. - In certain embodiments,
first pocket 1060 may comprise anopening 1061, one ormore injection ports 1062, and anopening 1063. - In certain embodiments, opening 1061 may permit the placement of a
gas lift valve 1200 withinfirst pocket 1060. For example, in certain embodiments, agas lift valve 1200 may be placed withinfirst pocket 1060 by sliding thegas lift valve 1200 throughopening 1061. - In certain embodiments, one or
more injection ports 1062 may permit the flow of fluid (gas, liquid, or a combination hereof) from an annulus defined bywell bore 1300 andproduction tubing 1400 intofirst pocket 1060. In certain embodiments, the one ormore injection ports 1062 may comprise four to ten separate injection ports. In certain embodiments, the one ormore injection ports 1062 may be 0.5 inches in diameter. - In certain embodiments, opening 1063 may permit the flow of fluid from
first pocket 1060 tointermediate section 1080. - In certain embodiments, a
gas lift valve 1200 may be disposed withinfirst pocket 1060. In certain embodiments,gas lift valve 1200 may comprise any retrievable gas lift valve. Examples of suitable retrievable gas lift valves include barrier isolation valves. - In certain embodiments,
gas lift valve 1200 may comprise ahousing 1210. In certain embodiments,housing 1210 may be of a generally cylindrical shape. In certain embodiments,housing 1210 may have an inner diameter in the range of from 1 inch to 1.5 inches. In certain embodiments,housing 1210 may define hollow defining aninternal chamber 1211. In certain embodiments,internal chamber 1211 may be defined byhousing 1210. - In certain embodiments,
housing 1210 may further comprise anupper packer 1230,latch thread section 1240, one ormore openings 1250,lower packer 1260, andoutlet 1270. - In certain embodiments,
upper packer 1230 may be disposed aboveinternal chamber 1211 and surroundhousing 1210. In certain embodiments,upper packer 1230 may provide sealing contact with a pocket of a gas lift mandrel whengas lift valve 1200 is disposed therein. In certain embodiments,upper packer 1230 may comprise any conventional packer material. - In certain embodiments,
latch thread section 1240 may be disposed aboveupper packer 1230. In certain embodiments,latch thread section 1240 may comprisethreads 1241. In certain embodiments,gas lift valve 1200 may be capable of being removed and/or placed within a mandrel pocket utilizinglatch thread section 1240. For example, a tool may be attached thelatch thread section 1240 and utilized to install or remove thegas lift valve 1200 fromfirst pocket 1060. - In certain embodiments, one or
more openings 1250 may be disposed onhousing 1210 betweenupper packer 1230 andlower packer 1260. In certain embodiments, the one oropenings 1250 may be a screen. In certain embodiments, the one ormore openings 1250 may permit fluid (gas, liquid, or a combination thereof) to flow from outside ofgas lift valve 1200 intogas lift valve 1200. In certain embodiments, one ormore openings 1250 may permit fluid (gas, liquid, or a combination thereof) to flow from outsidegas lift valve 1200 intointernal chamber 1211 ofgas lift valve 1200. In certain embodiments, one ormore openings 1250 may permit fluid (gas, liquid, or a combination thereof) to flow from outside ofgas lift valve 1200 intogas lift valve 1200 and then throughoutlet 1270. - In certain embodiments,
lower packer 1260 may be disposed below one ormore openings 1250 and surroundhousing 1210. In certain embodiments,lower packer 1260 may provide sealing contact with a pocket of a gas lift mandrel whengas lift valve 1200 is disposed therein. In certain embodiments,lower packer 1260 may comprise any conventional packer material. - In certain embodiments,
outlet 1270 may be disposed belowlower packer 1260. In certain embodiments,outlet 1270 may permit the one way flow of fluid (gas, liquid, or a combination thereof) from withingas lift valve 1200 to outside ofgas lift valve 1200. In certain embodiments,outlet 1270 may comprise a directional one way reverse flow check. - In certain embodiments,
gas lift valve 1200 may be placed withinfirst pocket 1060. In certain embodiments,gas lift valve 1200 may be placed withinfirst pocket 1060 in a manner such thatupper packer 1230 is aboveinjection ports 1062 andlower packer 1260 is belowinjection ports 1062. In certain embodiments,gas lift valve 1200 may be placed withinfirst pocket 1060 in a manner such that fluid injected intoinjection ports 1062 enters theinternal chamber 1211 ofgas lift valve 1200 and flows throughopening 1063 intointermediate section 1080 of gas lift mandrel. - In certain embodiments,
second pocket 1070 may comprise an opening 1071 and an opening an opening 1073. - In certain embodiments, opening 1071 may permit the placement of a
dummy valve 1100 withinsecond pocket 1070. For example, in certain embodiments, adummy valve 1100 may be placed withinsecond pocket 1070 by sliding thedummy valve 1100 through opening 1071. In certain embodiments, opening 1073 may permit the flow of fluid fromsecond pocket 1070 into theproduction tubing 1400. - In certain embodiments,
dummy valve 1100 may be disposed withinsecond pocket 1070. In certain embodiments,dummy valve 1100 may comprise and combination of features discussed above with respect todummy valve 100. In certain embodiments,dummy valve 1100 may comprise ahousing 1110 and arupture disc 1120. In certain embodiments,housing 1110 may define a firstinternal chamber 1111A and a secondinternal chamber 1111B. In certain embodiments, firstinternal chamber 1111A may be at least half as large as the combined volume ofintermediate section 1080 and secondinternal chamber 1111B. In certain embodiments, firstinternal chamber 1111A may be defined by as the internal volume ofdummy valve 1100 aboverupture disc 1120. In certain embodiments, secondinternal chamber 1111B may be defined by as the internal volume ofdummy valve 1100 belowrupture disc 1120. - In certain embodiments,
rupture disc 1120 may be disposed directly below firstinternal chamber 1111A ofhousing 1110. In certain embodiments,rupture disc 1120 may comprise any combination of features discussed above with respect to rupturedisc 120. In certain embodiments,rupture disc 1120 may comprise ahousing 1121 and arupture material 1122. In certain embodiments, for example whenrupture disc 1120 is not ruptured,rupture disc 1120 may prevent the flow of fluid (gas, liquid, or a combination thereof) fromintermediate section 1080 into firstinternal chamber 1111A. In other embodiments, for example whenrupture disc 1120 is ruptured, fluid (gas, liquid, or a combination thereof) may flow fromintermediate section 1080 into firstinternal chamber 1111A throughrupture disc 1120. - In certain embodiments,
housing 1110 may further comprise anupper packer 1130,latch thread section 1140,screen portion 1150, andlower packer 1160. - In certain embodiments,
upper packer 1130 may be disposed aboveinternal chamber 1111A and surroundhousing 1110. In certain embodiments,upper packer 1130 may provide sealing contact withsecond pocket 1070 whendummy valve 1100 is disposed therein. - In certain embodiments,
latch thread section 1140 may be disposed aboveupper packer 1130. In certain embodiments,latch thread section 1140 may comprisethreads 1141. In certain embodiments,dummy valve 1100 may be capable of being removed and/or placed withinsecond pocket 1070 utilizinglatch thread section 1140. - In certain embodiments,
screen portion 1150 may be disposed belowrupture disc 1120. In certain embodiments,screen portion 1150 may comprise any combination of features discussed above with respect toscreen portion 150. In other embodiments, not illustrated inFigure 2 ,housing 1110 may comprise one or more holes rather than ascreen portion 1150. In certain embodiments, screen portion 1150 (or alternatively the one or more holes) may permit fluid (gas, liquid, or a combination thereof) to flow fromintermediate section 1080 into firstinternal chamber 1111B ofdummy valve 1100. In certain embodiments, for example whenrupture disc 1120 is ruptured, screen portion 1150 (or alternatively the one or more holes) may permit fluid (gas, liquid, or a combination thereof) to flow fromintermediate section 1080 into firstinternal chamber 1111A ofdummy valve 1100. - In certain embodiments,
lower packer 1160 may be disposed belowscreen portion 1150 and surroundhousing 1110. In certain embodiments,lower packer 1160 may comprise any of the features discussed above with respect tolower packer 160. In certain embodiments,lower packer 1160 may provide sealing contact withsecond pocket 1070 whendummy valve 1100 is disposed therein. - In certain embodiments,
housing 1110 may further compriseoutlet 1170. In certain embodiments,outlet 1170 may permit fluid to fluid from inside secondinternal chamber 1111B ofdummy valve 1100 to outside ofdummy valve 1100. - In certain embodiments,
dummy valve 1100 may be capable of being placed within a pocket of a gas lift mandrel. In certain embodiments,dummy valve 1100 may be placed withinsecond pocket 1070. In certain embodiments,dummy valve 1100 may be placed withinsecond pocket 1070 in a manner such thatupper packer 1130 is aboveintermediate section 1080 andlower packer 1160 is belowintermediate section 1080. In certain embodiments,dummy valve 1100 may be placed withinsecond pocket 1070 in a manner such that fluid fromintermediate section 1080 enters the secondinternal chamber 1111B ofdummy valve 1100 and flows through intoproduction tubing 1400 throughoutlet 1170. - In certain embodiments, the present disclosure provides a method comprising: providing a gas lift system. In certain embodiments, the gas lift system may comprise any combination of features discussed above with respect to
gas lift system 1000. - In certain embodiments, the present disclosure provides a method comprising: providing a gas lift mandrel. In certain embodiments, the gas lift mandrel may comprise any combination of features discussed above with respect to
gas lift mandrel 1050. In certain embodiments, the gas lift mandrel may comprise a first pocket, a second pocket, and an intermediate section. In certain embodiments, the gas lift mandrel may comprise a gas lift valve disposed within the first pocket and/or a dummy valve disposed within the second pocket. In certain embodiments, the dummy valve may comprise a rupture disc and one or more internal chambers. - In certain embodiments, the gas lift valve may comprise any combination of features discussed above with respect to
gas lift valve 1200. In certain embodiments, the dummy valve may comprise any combination of features discussed above with respect todummy valve 1100 and/ordummy valve 100. - In certain embodiments, the method may further comprise running the gas lift mandrel into a subterranean formation. In certain embodiments, a gas lift valve and a dummy valve may be placed within the first and second pockets of the gas lift mandrel before it is run into the subterranean formation. In other embodiments, a gas lift valve and/or a dummy valve may be placed within the first and second pockets of the gas lift mandrel after it is run into a subterranean formation.
- In certain embodiments, the method may further comprise removing the gas lift valve from the gas lift mandrel. In other embodiments, the method may further comprise installing a gas lift valve into the gas lift mandrel while the gas lift mandrel is within a subterranean formation.
- In certain embodiments, the method may further comprise allowing the rupture disc to rupture. In certain embodiments, the rupture disc may rupture while the gas lift valve is being placed within the first pocket of the gas lift mandrel. In certain embodiments, when the rupture disc is allowed to rupture, fluid that is trapped within the intermediate section of the gas lift mandrel may flow into the first internal chamber of the dummy valve.
- While the embodiments are described with reference to various implementations and exploitations, it will be understood that these embodiments are illustrative and that the scope of the inventive subject matter is not limited to them. Many variations, modifications, additions and improvements are possible.
- Plural instances may be provided for components, operations or structures described herein as a single instance. In general, structures and functionality presented as separate components in the exemplary configurations may be implemented as a combined structure or component. Similarly, structures and functionality presented as a single component may be implemented as separate components. These and other variations, modifications, additions, and improvements may fall within the scope of the inventive subject matter.
Claims (12)
- A dummy valve (100,1100) capable of being placed within a pocket of a dual pocket gas lift mandrel, comprising:a housing (110,1110) comprising an upper packer (130,1130) and a lower packer (160,1160), anda rupture disc (120,1120) disposed within the housing (110,1110), wherein the housing (110,1110) and the rupture disc (120,1120) define a first internal chamber (111A,1111A) and a second internal chamber (111B,1111B), wherein one or more holes or a screen portion (150,1150) is provided to permit fluid to flow from outside the dummy valve (100,1100) into the second internal chamber (111B,1111B), and an outlet (170,1170) to permit fluid to flow from inside internal chamber (111B,111B) to outside of dummy valve (100,1100).
- The dummy valve of claim 1, wherein the first internal chamber (111A,1111A) is defined above the rupture disc (120,1120), and the second internal chamber (111B,1111B) is defined below the rupture disc (120,1120).
- The dummy valve of claim 1 or 2, wherein the rupture disc (120,1120) comprises a rupture material.
- The dummy valve of any one of claims 1-3, wherein the rupture disc (120,1120) is a non-fragmenting disc.
- The dummy valve of any one of claims 1-4, wherein the lower packer (1160) is disposed below the one or more holes or screen portion (150,1150) and surrounding the housing (110,1110).
- The dummy valve of any one of claims 1-5, wherein the housing (110,1110) comprises a screen portion (150,1150).
- The dummy valve of any one of claims 1-6, wherein the housing (110,1110) comprises a latch thread section (140,1140).
- A gas lift system (1000) comprising:a gas lift mandrel (1050) comprising a first pocket (1060) and a second pocket (1070);a gas lift valve (1200) disposed within the first pocket (1060); characterized in thata dummy valve (1100) as defined in any one of claims 1-7 is disposed within the second pocket (1070).
- The gas lift system of claim 8, wherein the first pocket (1060) comprises a first opening (1061), a second opening (1063), and one or more injection ports (1062).
- The gas lift system of claim 8 or 9, wherein the gas lift valve (1200) is a retrievable gas lift valve.
- The gas lift system of any one of claims 8-10, wherein the second pocket (1070) comprises a first opening (1071) and a second opening (1072).
- The gas lift system of any one of claims 8-11, wherein the gas lift mandrel (1050) has been run into a subterranean formation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201462019566P | 2014-07-01 | 2014-07-01 | |
PCT/US2015/038293 WO2016003890A1 (en) | 2014-07-01 | 2015-06-29 | Hydraulic lock compensating dummy valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3164569A1 EP3164569A1 (en) | 2017-05-10 |
EP3164569B1 true EP3164569B1 (en) | 2018-04-11 |
Family
ID=53539960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15736149.4A Not-in-force EP3164569B1 (en) | 2014-07-01 | 2015-06-29 | Hydraulic lock compensating dummy valve |
Country Status (6)
Country | Link |
---|---|
US (1) | US20170198549A1 (en) |
EP (1) | EP3164569B1 (en) |
CN (1) | CN106471208B (en) |
AU (1) | AU2015284356B2 (en) |
MY (1) | MY182349A (en) |
WO (1) | WO2016003890A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO342891B1 (en) * | 2016-06-03 | 2018-08-27 | Petroleum Technology Co As | Plug and production tubing for a petroleum well |
CN108316887A (en) * | 2018-03-30 | 2018-07-24 | 中国石油化工股份有限公司 | Gas lift valve and oil pipe |
CN110847865A (en) * | 2018-08-20 | 2020-02-28 | 中国石油天然气股份有限公司 | Drainage gas production passageway intercommunication device |
GB201903843D0 (en) * | 2019-03-20 | 2019-05-01 | Metrol Tech Ltd | Rapture apparatus |
CN114585799A (en) * | 2019-05-06 | 2022-06-03 | 阿尔莫工具国际公司 | Adjustable in situ, sealless and frangible downhole pressure control and isolation device and subassembly for conduits in a wellbore |
Family Cites Families (14)
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US3311126A (en) * | 1963-12-18 | 1967-03-28 | Merla Tool Corp | Gas lift valve |
US4760879A (en) * | 1987-11-27 | 1988-08-02 | Camco, Incorporated | Choke and kill control system |
US5425425A (en) | 1994-04-29 | 1995-06-20 | Cardinal Services, Inc. | Method and apparatus for removing gas lift valves from side pocket mandrels |
US5782261A (en) | 1995-09-25 | 1998-07-21 | Becker; Billy G. | Coiled tubing sidepocket gas lift mandrel system |
CA2236052A1 (en) * | 1998-04-27 | 1999-10-27 | Rene Shoan Grande | Dummy plug pressure recorder |
US6715550B2 (en) | 2000-01-24 | 2004-04-06 | Shell Oil Company | Controllable gas-lift well and valve |
US8162060B2 (en) * | 2008-10-22 | 2012-04-24 | Eagle Gas Lift, LLC. | Gas-lift valve and method of use |
US9057255B2 (en) * | 2011-10-11 | 2015-06-16 | Weatherford Technology Holdings, Llc | Dual flow gas lift valve |
US9453397B2 (en) * | 2012-08-09 | 2016-09-27 | Schlumberger Technology Corporation | Dual barrier side pocket mandrel with gauge |
US9605521B2 (en) * | 2012-09-14 | 2017-03-28 | Weatherford Technology Holdings, Llc | Gas lift valve with mixed bellows and floating constant volume fluid chamber |
CN203175480U (en) * | 2013-01-10 | 2013-09-04 | 中国石油天然气股份有限公司 | Internal-pressure type RDS circulating valve |
CA2842385A1 (en) * | 2013-02-08 | 2014-08-08 | Kaare Idland | Wellbore fluid lift apparatus |
CN203114245U (en) * | 2013-03-16 | 2013-08-07 | 中国石油集团渤海钻探工程有限公司 | Primary switching valve under shaft |
US10156130B2 (en) * | 2013-09-18 | 2018-12-18 | Schlumberger Technology Corporation | Pressure relief system for gas lift valves and mandrels |
-
2015
- 2015-06-29 EP EP15736149.4A patent/EP3164569B1/en not_active Not-in-force
- 2015-06-29 AU AU2015284356A patent/AU2015284356B2/en not_active Ceased
- 2015-06-29 CN CN201580034819.2A patent/CN106471208B/en not_active Expired - Fee Related
- 2015-06-29 US US15/320,963 patent/US20170198549A1/en not_active Abandoned
- 2015-06-29 WO PCT/US2015/038293 patent/WO2016003890A1/en active Application Filing
- 2015-06-29 MY MYPI2016704601A patent/MY182349A/en unknown
Also Published As
Publication number | Publication date |
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WO2016003890A1 (en) | 2016-01-07 |
AU2015284356A1 (en) | 2016-12-22 |
US20170198549A1 (en) | 2017-07-13 |
MY182349A (en) | 2021-01-20 |
AU2015284356B2 (en) | 2017-07-20 |
CN106471208A (en) | 2017-03-01 |
EP3164569A1 (en) | 2017-05-10 |
CN106471208B (en) | 2019-04-16 |
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