EP2009231A1 - Method of producing crude oil - Google Patents
Method of producing crude oil Download PDFInfo
- Publication number
- EP2009231A1 EP2009231A1 EP07111358A EP07111358A EP2009231A1 EP 2009231 A1 EP2009231 A1 EP 2009231A1 EP 07111358 A EP07111358 A EP 07111358A EP 07111358 A EP07111358 A EP 07111358A EP 2009231 A1 EP2009231 A1 EP 2009231A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- well
- cavity
- crude oil
- water
- upper section
- 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.)
- Withdrawn
Links
- 239000010779 crude oil Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 14
- 150000003839 salts Chemical class 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 230000001939 inductive effect Effects 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 14
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000002386 leaching Methods 0.000 claims description 3
- 239000002516 radical scavenger Substances 0.000 claims description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 235000002639 sodium chloride Nutrition 0.000 description 11
- 238000005755 formation reaction Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000010442 halite Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011833 salt mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/162—Injecting fluid from longitudinally spaced locations in injection well
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/18—Repressuring or vacuum methods
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
Definitions
- the invention relates to a method of producing crude oil from a crude oil containing formation.
- Gas lift injection systems and ESP's comprise wear prone components that require regular inspection, maintenance and/or replacement, which is a time consuming and expensive procedure, which may render crude oil production unecomical, in particular if the crude oil comprises fines and/or acidic components, such as hydrogen sulphide and/or carbon dioxide.
- the estimated lifetime of an ESP may be less than 500 days, after which a work over is required to replace the pump.
- sour gases such as hydrogen sulphide
- the cavity may be created in one or more salt layers surrounding the well in an upper section of the well located between the crude oil containing formation and the wellhead, for example by injecting water from the upper section of the well through perforations in a well casing into one or more of the salt layers, thereby leaching salt into the injected flux of water.
- the produced crude oil may be associated with gas comprising hydrogen sulphide and the associated gas may be treated in a vessel containing a hydrogen sulphide scavenger, such as a sulferox scrubber, which vessel is located in a gas transportation conduit located between the wellhead and the flare.
- a hydrogen sulphide scavenger such as a sulferox scrubber
- step h) water may be pumped from the cavern by inserting a hose or other conduit carrying at its lower end a pump through the wellhead into the upper section of the well, and pumping water from upper section of the well until the upper section of the well and the flow channel and cavity are substantially dry.
- an oxygen depleted inert gas may be injected into the upper section of the well, which oxygen depleted inert gas may comprise at least 90 vol% nitrogen.
- the valve in the wellbore between the oil containing earth layer and the salt cavern may be a one way valve, which permits fluid to flow from a lower section of the well traversing the crude oil containing earth layer, and the upper section of the well, and which inhibits fluid to flow from the upper into the lower section of the well.
- FIG.1 shows a wellbore 1 that penetrates a sour crude oil, methane (CH 4 ), hydrogen sulphide(H2S) and water containing earth layer 2.
- a casing 3 has been cemented within the wellbore 1 such that sour crude influx from the earth layer into the wellbore 1 is inhibited.
- the casing 3 comprises a perforated section 3A, 3B that is located in a region above the crude oil containing earth layer 2 where the wellbore 1 traverses a series of salt layers 4, which are also identified as halite layers.
- a water injection tube 6 has been inserted into the wellbore 1, which tube 6 carries a movable packer 7 near its lower end.
- the packer is located adjacent to the perforated section 3A, 3B of the casing 3, such that when fresh water is injected through the water injection tube 6, the injected water is pumped through the perforations 3A below the movable packer 7 into the lowermost salt layer 4, thereby leaching a cavity 8A in this salt layer 4 and the water and leached salt mixture returns to surface through the perforations 3B above the packer 7 and through an annular space 9 between the casing 3 and water injection tube 6, as indicated by arrows 10.
- Fig. 2 shows the completed wellbore 1 after retrieval of the water injection tubing 6, wherein a mixture of sour crude oil, CH 4 , H S S and water flows through perforations 12 in the casing adjacent to the sour crude oil, CH 4 , H S S and water containing earth layer 2.
- the produced mixture flows through a one way check valve 13 up through the wellbore 1 and through the perforated casing sections 3A and 3B into the cavity 8 in the salt layer(s) 4 as illustrated by arrows 14.
- the gaseous components CH 4 and H 2 S predominantly flow up through the wellbore 1 via the well head 15 and a gas discharge conduit 16 into a gas treating unit 17 in which H 2 S is removed from the produced methane CH 4 and from which the purified methane CH 4 may be discharged into a gas production pipe or a flare 18.
- the cavity 8 performs as a gravity separation vessel in which crude oil and water will be separated by gravity forces and an upper layer of crude oil 20 will float on top of a lower layer of water (H 2 O) 21.
- FIG.3 shows how a water injection tube 30 is inserted through the wellhead 15 into the wellbore 1 such that water is injected through the perforated sections 3A, 3B of the casing 3 into the cavity 8.
- the one way check valve 13 prevents that the injected water reaches the perforations 12 in the lower inflow region of the wellbore 1.
- the injected flux of water pushes the crude oil layer 20 that floats on top of the water layer 21 to flow up through the wellbore 1 via the wellhead 15 into a crude oil discharge conduit 31.
- the discharge conduit 31 may be connected to an oil production pipeline or to a crude oil collecting tank, from which the collected crude oil may be discharged by a road tanker.
- FIG.4 shows how after discharging the crude oil from the wellbore 1 water is pumped out of the wellbore 1 by a submerged pump 41, which is suspended at the lower end of a water discharge hose 42, while at the same time nitrogen (N 2 ) is injected into the wellbore 1 via a nitrogen feed conduit 43, such that after removal of the water the cavern is substantially filled with nitrogen (N 2 ) at an ambient atmospheric pressure of about 1 bar.
- the cyclic production of crude oil and water into the cavern 8 and subsequent injection of water and nitrogen into the cavern 8 as illustrated in FIG.2-4 is cyclically repeated until at least a substantial part of the crude oil has been produced from the earth layer 2.
- the method according to the invention permits production of crude oil such that a relatively low hydrostatic pressure is maintained in the wellbore 1 and a low bottom hole pressure (BHP) permits production of a large flux of crude oil from the crude oil containing earth layer 2, without using a corrosion prone permanently installed electrical submersible pump(ESP).
- BHP bottom hole pressure
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)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
A method of producing crude oil, comprising:
a) drilling a well (1) traversing a crude oil containing formation (2);
b) creating a cavity (8) in the vicinity of the well;
c) creating a flow channel (3A,3B) between the cavity and the well;
d) inducing crude oil (20) to flow from the crude oil containing formation into the cavern the flow channel a section of the well, which is equipped with a valve (13);
e) closing the valve when a substantial portion of the cavity is filled with crude oil;
f) injecting water into the cavity, thereby inducing crude oil to flow from the cavity via the flow channel and the well to a wellhead (15) at the earth surface;
g) interrupting water injection into the cavity when a substantial portion of the cavity is filled with water;
h) pumping water from the cavity and filling at least a substantial portion of the cavity with a gaseous fluid;
i) opening the valve and repeating steps d)-h).
The method may make use of a one way valve (13) nitrogen and a salt layer (4).
a) drilling a well (1) traversing a crude oil containing formation (2);
b) creating a cavity (8) in the vicinity of the well;
c) creating a flow channel (3A,3B) between the cavity and the well;
d) inducing crude oil (20) to flow from the crude oil containing formation into the cavern the flow channel a section of the well, which is equipped with a valve (13);
e) closing the valve when a substantial portion of the cavity is filled with crude oil;
f) injecting water into the cavity, thereby inducing crude oil to flow from the cavity via the flow channel and the well to a wellhead (15) at the earth surface;
g) interrupting water injection into the cavity when a substantial portion of the cavity is filled with water;
h) pumping water from the cavity and filling at least a substantial portion of the cavity with a gaseous fluid;
i) opening the valve and repeating steps d)-h).
The method may make use of a one way valve (13) nitrogen and a salt layer (4).
Description
- The invention relates to a method of producing crude oil from a crude oil containing formation.
- In many crude oil containing formations the pore pressure is too low to lift the produced crude oil to surface. In such cases artificial lift methods are often used, such as gas-lift and or electrical submersible pumps (ESP's).
- Gas lift injection systems and ESP's comprise wear prone components that require regular inspection, maintenance and/or replacement, which is a time consuming and expensive procedure, which may render crude oil production unecomical, in particular if the crude oil comprises fines and/or acidic components, such as hydrogen sulphide and/or carbon dioxide.
- If the produced crude oil contains more than a few weight percent of hydrogen sulphide then the estimated lifetime of an ESP may be less than 500 days, after which a work over is required to replace the pump.
- During the work over the wellhead needs to be opened and extensive precautions need to be made to prevent hydrogen sulphide to flow from the well into the atmosphere.
- It is an object of the present invention to provide a method of producing crude oil from a low pressure crude oil containing formation without the need for wear prone downhole artificial lift equipment, such as ESP's and/or lift gas injection valves.
- It is a further object of the present invention to provide a method of producing sour crude oil from a sour crude oil containing formation, such that the risk of escape of sour gases, such as hydrogen sulphide, from the well into the atmosphere, in particular during work over operations, is reduced.
- In accordance with the invention there is provided a method of producing crude oil, comprising:
- a) drilling a well traversing a crude oil containing formation;
- b) creating a cavity in the vicinity of the well;
- c) creating a flow channel between the cavity and the well;
- d) inducing crude oil to flow from the crude oil containing formation into the cavern the flow channel and a section of the well, which is equipped with a valve;
- e) closing the valve when a substantial portion of the cavity is filled with crude oil;
- f) injecting water into the cavity, thereby inducing crude oil to flow from the cavity via the flow channel and the well to a wellhead at the earth surface;
- g) interrupting water injection into the cavity when a substantial portion of the cavity is filled with water;
- h) pumping water from the cavity and filling at least a substantial portion of the cavity with a gaseous fluid;
- i) opening the valve and repeating steps d)-h).
- The cavity may be created in one or more salt layers surrounding the well in an upper section of the well located between the crude oil containing formation and the wellhead, for example by injecting water from the upper section of the well through perforations in a well casing into one or more of the salt layers, thereby leaching salt into the injected flux of water.
- The produced crude oil may be associated with gas comprising hydrogen sulphide and the associated gas may be treated in a vessel containing a hydrogen sulphide scavenger, such as a sulferox scrubber, which vessel is located in a gas transportation conduit located between the wellhead and the flare.
- During step h) water may be pumped from the cavern by inserting a hose or other conduit carrying at its lower end a pump through the wellhead into the upper section of the well, and pumping water from upper section of the well until the upper section of the well and the flow channel and cavity are substantially dry.
- Furthermore during step h) an oxygen depleted inert gas may be injected into the upper section of the well, which oxygen depleted inert gas may comprise at least 90 vol% nitrogen.
- The valve in the wellbore between the oil containing earth layer and the salt cavern may be a one way valve, which permits fluid to flow from a lower section of the well traversing the crude oil containing earth layer, and the upper section of the well, and which inhibits fluid to flow from the upper into the lower section of the well.
- These and other features, embodiments and advantages of the method according to the invention are described in the accompanying claims, abstract and the following detailed description of a preferred embodiment in which reference is made to the accompanying drawings.
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FIG.1 shows how one or more caverns are leached into one or more salt layers around an upper section of a well; -
FIG.2 shows how crude oil is produced from a crude oil containing formation into a lower section of the well and transported via the well into the cavern surrounding the upper section of the well; -
FIG.3 shows how after closing a valve between the lower and upper sections of the well water is pumped into the upper section of the well thereby lifting crude oil from the cavern to the wellhead; and -
FIG.4 shows how after lifting substantially all crude oil from, water is pumped from and/or nitrogen is pumped into, the cavern and upper section of the well. -
FIG.1 shows a wellbore 1 that penetrates a sour crude oil, methane (CH4), hydrogen sulphide(H2S) and water containingearth layer 2. A casing 3 has been cemented within the wellbore 1 such that sour crude influx from the earth layer into the wellbore 1 is inhibited. - The casing 3 comprises a
perforated section earth layer 2 where the wellbore 1 traverses a series ofsalt layers 4, which are also identified as halite layers. - A
water injection tube 6 has been inserted into the wellbore 1, whichtube 6 carries amovable packer 7 near its lower end. The packer is located adjacent to theperforated section water injection tube 6, the injected water is pumped through theperforations 3A below themovable packer 7 into thelowermost salt layer 4, thereby leaching acavity 8A in thissalt layer 4 and the water and leached salt mixture returns to surface through theperforations 3B above thepacker 7 and through anannular space 9 between the casing 3 andwater injection tube 6, as indicated byarrows 10. - By gradually pulling the
water injection tube 6 and packer 7 up through the perforated region of the casing 3 a series of threecaverns salt layers 4, which caverns are then merged by placing thepacker 7 adjacent to the thinimpermeable earth layers water injection tube 6 into thecavern impermeable lay impermeable layer single cavity 8 is created around the perforated section of the casing 3. -
Fig. 2 shows the completed wellbore 1 after retrieval of thewater injection tubing 6, wherein a mixture of sour crude oil, CH4 , HSS and water flows throughperforations 12 in the casing adjacent to the sour crude oil, CH4 , HSS and water containingearth layer 2. The produced mixture flows through a oneway check valve 13 up through the wellbore 1 and through the perforatedcasing sections cavity 8 in the salt layer(s) 4 as illustrated byarrows 14. - The gaseous components CH4 and H2S predominantly flow up through the wellbore 1 via the well
head 15 and agas discharge conduit 16 into agas treating unit 17 in which H2S is removed from the produced methane CH4 and from which the purified methane CH4 may be discharged into a gas production pipe or aflare 18. - The
cavity 8 performs as a gravity separation vessel in which crude oil and water will be separated by gravity forces and an upper layer ofcrude oil 20 will float on top of a lower layer of water (H2O) 21. -
FIG.3 shows how awater injection tube 30 is inserted through thewellhead 15 into the wellbore 1 such that water is injected through theperforated sections cavity 8. The oneway check valve 13 prevents that the injected water reaches theperforations 12 in the lower inflow region of the wellbore 1. - The injected flux of water pushes the
crude oil layer 20 that floats on top of thewater layer 21 to flow up through the wellbore 1 via thewellhead 15 into a crudeoil discharge conduit 31. Thedischarge conduit 31 may be connected to an oil production pipeline or to a crude oil collecting tank, from which the collected crude oil may be discharged by a road tanker. -
FIG.4 shows how after discharging the crude oil from the wellbore 1 water is pumped out of the wellbore 1 by a submerged pump 41, which is suspended at the lower end of a water discharge hose 42, while at the same time nitrogen (N2) is injected into the wellbore 1 via anitrogen feed conduit 43, such that after removal of the water the cavern is substantially filled with nitrogen (N2) at an ambient atmospheric pressure of about 1 bar. - After removal of the submerged pump 41 and hose 42 production of sour crude oil, gas and water from the
earth layer 2 is resumed in the manner as illustrated inFIG.2 until the cavern has been filled again with crude oil and water, whereupon production is interrupted and water is injected into the wellbore 1 above the oneway check valve 13 andcavern 8 as illustrated inFIG.3 and subsequently water is pumped out of the wellbore 1 andcavity 8 as illustrated inFIG.4 . - The cyclic production of crude oil and water into the
cavern 8 and subsequent injection of water and nitrogen into thecavern 8 as illustrated inFIG.2-4 is cyclically repeated until at least a substantial part of the crude oil has been produced from theearth layer 2. - It will be understood that the method according to the invention permits production of crude oil such that a relatively low hydrostatic pressure is maintained in the wellbore 1 and a low bottom hole pressure (BHP) permits production of a large flux of crude oil from the crude oil containing
earth layer 2, without using a corrosion prone permanently installed electrical submersible pump(ESP).
Claims (10)
- A method of producing crude oil, comprising:a) drilling a well traversing a crude oil containing formation;b) creating a cavity in the vicinity of the well;c) creating a flow channel between the cavity and the well;d) inducing crude oil to flow from the crude oil containing formation into the cavern the flow channel and a section of the well, which is equipped with a valve;e) closing the valve when a substantial portion of the cavity is filled with crude oil;f) injecting water into the cavity, thereby inducing crude oil to flow from the cavity via the flow channel and the well to a wellhead at the earth surface;g) interrupting water injection into the cavity when a substantial portion of the cavity is filled with water;h) pumping water from the cavity and filling at least a substantial portion of the cavity with a gaseous fluid;i) opening the valve and repeating steps d)-h).
- The method of claim 1, wherein the cavity is created in one or more salt layers surrounding the well in an upper section of the well located between the crude oil containing formation and the wellhead.
- The method of claim 2, wherein the cavity is created by injecting water from the upper section of the well through perforations in a well casing into one or more of the salt layers, thereby leaching salt into the injected flux of water.
- The method of claim 2, wherein during step f) water is injected into the cavern by inserting a hose through the wellhead into the upper section of the well.
- The method of claim 1, wherein the wellhead is provided with a flare for flaring gas dissolved in the produced crude oil.
- The method of claim 5, wherein the gas is contains hydrogen sulphide and the gas is treated in a vessel containing a hydrogen sulphide scavenger, such as a sulferox scrubber, which vessel is located in a gas transportation conduit located between the wellhead and the flare.
- The method of claim 2, wherein during step h) water is pumped from the cavern by inserting a hose or other conduit carrying at its lower end a pump through the wellhead into the upper section of the well, and pumping water from upper section of the well until the upper section of the well and the flow channel and cavity are substantially dry.
- The method of claim 1, wherein during step h) an oxygen depleted inert gas is injected into the upper section of the well.
- The method of claim 8, wherein the oxygen depleted inert gas comprises at least 90 vol% nitrogen.
- The method of claim 1, wherein the valve is a one way valve, which permits fluid to flow from a lower section of the well traversing the crude oil containing formation, and the upper section of the well, and which inhibits fluid to flow from the upper section into the lower section of the well.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07111358A EP2009231A1 (en) | 2007-06-29 | 2007-06-29 | Method of producing crude oil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07111358A EP2009231A1 (en) | 2007-06-29 | 2007-06-29 | Method of producing crude oil |
Publications (1)
Publication Number | Publication Date |
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EP2009231A1 true EP2009231A1 (en) | 2008-12-31 |
Family
ID=38702020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07111358A Withdrawn EP2009231A1 (en) | 2007-06-29 | 2007-06-29 | Method of producing crude oil |
Country Status (1)
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EP (1) | EP2009231A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105781506A (en) * | 2014-12-19 | 2016-07-20 | 中国石油天然气股份有限公司 | Method for separate layer water injection for oil well |
CN106150460A (en) * | 2016-08-25 | 2016-11-23 | 中国石油天然气股份有限公司 | A kind of water injection well layering commissioning process device and measuring and regulating method thereof |
WO2021119115A1 (en) * | 2019-12-10 | 2021-06-17 | Saudi Arabian Oil Company | Production cavern |
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US3739851A (en) * | 1971-11-24 | 1973-06-19 | Shell Oil Co | Method of producing oil from an oil shale formation |
US4016930A (en) * | 1975-10-23 | 1977-04-12 | Arnold James F | Oil well producing method and system |
US4034812A (en) * | 1975-07-28 | 1977-07-12 | Texaco Inc. | Method for recovering viscous petroleum from unconsolidated mineral formations |
US4456065A (en) * | 1981-08-20 | 1984-06-26 | Elektra Energie A.G. | Heavy oil recovering |
EP0517597A1 (en) * | 1991-06-05 | 1992-12-09 | Société Française de Stockage Géologique "GEOSTOCK" (Société à responsabilité limitée) | Process for the production of hydrocarbons, undeground cavity for carrying out the process and related use of this cavity |
GB2384508A (en) * | 1999-04-16 | 2003-07-30 | Halliburton Energy Serv Inc | Downhole separator for use in a subterrranean well and method |
WO2003091133A1 (en) * | 2002-04-25 | 2003-11-06 | Conocophillips Company | Petroleum production utilizing a salt cavern |
WO2005049964A1 (en) * | 2003-11-17 | 2005-06-02 | Cdx Gas, Llc | Multi-purpose well bores and method for accessing a subterranean zone from the surface |
-
2007
- 2007-06-29 EP EP07111358A patent/EP2009231A1/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3739851A (en) * | 1971-11-24 | 1973-06-19 | Shell Oil Co | Method of producing oil from an oil shale formation |
US4034812A (en) * | 1975-07-28 | 1977-07-12 | Texaco Inc. | Method for recovering viscous petroleum from unconsolidated mineral formations |
US4016930A (en) * | 1975-10-23 | 1977-04-12 | Arnold James F | Oil well producing method and system |
US4456065A (en) * | 1981-08-20 | 1984-06-26 | Elektra Energie A.G. | Heavy oil recovering |
EP0517597A1 (en) * | 1991-06-05 | 1992-12-09 | Société Française de Stockage Géologique "GEOSTOCK" (Société à responsabilité limitée) | Process for the production of hydrocarbons, undeground cavity for carrying out the process and related use of this cavity |
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CN106150460A (en) * | 2016-08-25 | 2016-11-23 | 中国石油天然气股份有限公司 | A kind of water injection well layering commissioning process device and measuring and regulating method thereof |
CN106150460B (en) * | 2016-08-25 | 2020-02-07 | 中国石油天然气股份有限公司 | Water injection well layered measurement and adjustment process device and measurement and adjustment method thereof |
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