US20100132942A1 - Hydrocarbon reservoir treatment method with hydrocarbons - Google Patents
Hydrocarbon reservoir treatment method with hydrocarbons Download PDFInfo
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- US20100132942A1 US20100132942A1 US12/605,235 US60523509A US2010132942A1 US 20100132942 A1 US20100132942 A1 US 20100132942A1 US 60523509 A US60523509 A US 60523509A US 2010132942 A1 US2010132942 A1 US 2010132942A1
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- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 289
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 288
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 273
- 238000000034 method Methods 0.000 title claims abstract description 64
- 238000011282 treatment Methods 0.000 title claims abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 208
- 239000003623 enhancer Substances 0.000 claims abstract description 46
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 28
- 239000000356 contaminant Substances 0.000 claims abstract description 16
- 239000003915 liquefied petroleum gas Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 12
- 239000003349 gelling agent Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 238000009472 formulation Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- 239000003180 well treatment fluid Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003039 volatile agent Substances 0.000 description 3
- 206010017076 Fracture Diseases 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
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- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/35—Arrangements for separating materials produced by the well specially adapted for separating solids
-
- 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/40—Separation associated with re-injection of separated materials
Definitions
- Production may be increased from a hydrocarbon reservoir by fracturing the reservoir with hydraulic fluid.
- Water is often used as the hydraulic fluid since it is inexpensive. However, water tends to damage, and may reduce production from, hydrocarbon reservoirs.
- Hydrocarbon fluids may also be used for hydraulic fracturing since hydrocarbon fluids tend to cause less formation damage, but hydrocarbon fluids are considerably more expensive than water in many locations, such as for example North America. An inexpensive method of fracturing a hydrocarbon reservoir with hydrocarbon is required.
- Fractures caused by fracturing may be kept open by introducing particulates known as proppant into the hydrocarbon reservoir along with the hydraulic fluid.
- Liquefied petroleum gas may be advantageously used as the hydraulic fluid, but causing the liquefied petroleum gas to carry sufficient proppant may introduce other problems, such as recovery and disposal of a gellant used to increase the viscosity of the hydraulic fluid.
- a novel method of fracturing a hydrocarbon reservoir with hydrocarbon fluid is required.
- a hydrocarbon well treatment fluid is made recyclable by introducing a laminar flow enhancer into the fluid, resulting in a formulation called Slick OilTM hydrocarbon fluid.
- proppant carrying abilities of a hydrocarbon fracturing fluid are enhanced by introducing a laminar flow enhancer into the fluid, resulting in a formulation called Slick OilTM hydrocarbon fluid.
- a method of using a fluid in the treatment of a hydrocarbon reservoir is disclosed.
- a hydrocarbon fluid is injected into the hydrocarbon reservoir, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer.
- the hydrocarbon fluid is recovered from the hydrocarbon reservoir.
- the recovered hydrocarbon fluid is then cleaned by removing contaminants from the recovered hydrocarbon fluid that have been introduced into the hydrocarbon fluid from the hydrocarbon reservoir.
- the hydrocarbon fluid is then re-used by injecting the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir.
- a method of using a fluid in the treatment of a hydrocarbon reservoir is also disclosed.
- a hydrocarbon fluid is injected into the hydrocarbon reservoir, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer.
- the hydrocarbon fluid is then recovered from the hydrocarbon reservoir.
- a method comprising cleaning a hydrocarbon fluid that has been injected into and subsequently recovered from a hydrocarbon reservoir during a treatment of the hydrocarbon reservoir, the cleaning comprising removing contaminants from the recovered hydrocarbon fluid that have been introduced into the hydrocarbon fluid from the hydrocarbon reservoir, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer.
- a method of re-using a hydrocarbon fluid previously used in a treatment of a hydrocarbon reservoir during which the hydrocarbon fluid was injected into and subsequently recovered from the hydrocarbon reservoir and cleaned to remove contaminants introduced into the hydrocarbon fluid from the hydrocarbon reservoir is also disclosed.
- the method comprises injecting the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer.
- the hydrocarbon fluid excludes liquefied petroleum gas. In other embodiments of the methods disclosed herein, the hydrocarbon fluid comprises liquefied petroleum gas.
- apparatus for treating hydrocarbon fluid recovered from a well In another embodiment, there is provided apparatus for treating hydrocarbon fluid recovered from a well.
- a method of using a fluid in the treatment of a hydrocarbon reservoir is also disclosed.
- a hydrocarbon fluid is injected into the hydrocarbon reservoir, the hydrocarbon fluid comprising liquefied petroleum gas and a laminar flow enhancer. Pressure is applied to the hydrocarbon fluid injected into the hydrocarbon reservoir.
- FIG. 1 is a side elevation view of a treatment system designed to carry out the methods disclosed herein.
- FIG. 2 is a flow diagram of a method of using a fluid in the treatment of a hydrocarbon reservoir.
- FIG. 3 is a flow diagram of a method of using a fluid in the treatment of a hydrocarbon reservoir.
- FIG. 4 is a flow diagram of a method of cleaning a hydrocarbon fluid that has been injected into and subsequently recovered from a hydrocarbon reservoir during a treatment of the hydrocarbon reservoir.
- FIG. 5 is a flow diagram of a method of re-using a hydrocarbon fluid previously used in a treatment of a hydrocarbon reservoir.
- FIG. 6 is a flow diagram of a method of using a fluid in the treatment of a hydrocarbon reservoir.
- FIG. 7 is a metals analysis of a sample of hydrocarbon fluid with UFV-100.
- Laminar flow enhancers may be added to oil, in order to allow the oil to go down a pipeline faster and easier.
- the flow enhancer operates by allowing the oil to move in a more laminar flow, thus reducing turbulence. These characteristics reduce the drag and friction between the oil and the pipeline, thus reducing the pressure required to pump the oil.
- Laminar flow enhancers may be polymers, for example polymerized hydrocarbons, thus adding viscosity to the hydrocarbon fluid, which reduces the turbulence induced as the fluid flows. Reductions in fluid friction of 50 to 60% are possible.
- Laminar flow enhancers tend to lubricate the oil, making the oil travel in sheets as the polymers slide in relation to one another, which results in a reduction or elimination of turbulent flow. Examples of hydrophobic flow enhancers include OFR-2 by Weatherford.
- the laminar flow enhancer used in the embodiments herein may be hydrophobic. Hydrophilic laminar flow enhancers are less desirable, as they tend to absorb additional water from the formation, thus increasing the cost of cleaning the recovered hydrocarbon fluid. In addition, hydrophilic enhancers may plate out in the formation alongside formation water, thus plugging the pores of the formation. In some embodiments, the hydrophobic laminar flow enhancers disclosed herein do not plate out in the well or formation. In addition, the hydrophobic laminar flow enhancer may be a non-emulsifier, thus allowing any water absorbed into the hydrocarbon fluid from the hydrocarbon reservoir to be easily removable. The hydrophobic laminar flow enhancer may be used in very low concentration, such as less than 0.5-1% for example.
- the enhancer is not required to be listed on the MSDS of the fluid.
- the hydrophobic flow enhancer may be easily removable from the hydrocarbon fluid.
- An example of a hydrocarbon fluid that has all of these characteristics is Slick OilTM fluid supplied by SynOil Fluids of Calgary, Alberta, Canada. Slick OilTM fluid will absorb very little measurable water during a downhole treatment.
- suitable hydrophobic flow enhancers include those disclosed in U.S. Pat. No. 6,395,852, and OFR-2 (Weatherford).
- the hydrophobic laminar flow enhancer comprises a friction reducer.
- An example of such a hydrophobic laminar flow enhancer is EC6507A, made by Nalco.
- a further embodiment of a hydrophobic flow enhancer that comprises a friction reducer is UFV-100, available from Uniquem Inc., 240 Everwillow Green SW, Calgary, AB, T2Y 4V9.
- UFV-100 is advantageous because it is imparts additional viscosity to the hydrocarbon fluid.
- UFV-100 is shown in the Table 1 below as being added in, for example, amounts of 0.5 to 5.5 liters/m 3 of the hydrocarbon fluid to get sufficient viscosity to carry proppant.
- the frac oils (hydrocarbon fluid) used were obtained from Synoil fluids in Calgary, AB. Referring to FIG.
- UFV-100 contains little or no phosphorus, which is known to cause fouling issues in refineries.
- Hydrocarbon frac fluids with UFV-100 may filter easily through 5 micron filters.
- Viscosities of hydraulic frac fluid comprising UFV-100 Concentration Viscosity Viscosity Frac oil DG1 (L/m3) (centipoise) (centipoise) TG740 4 6 6 SF770 5.5 5 4 SF790 3.5 5 4 SF800 2.5 5 6 SF820 1.5 5 6 SF830 0.5 4 4 SF840 0.5 8 8 SF860 0.5 16 11
- FIG. 1 an exemplary system is illustrated for carrying out the embodiments of the methods disclosed herein.
- the system illustrated is a general schematic, and a skilled worker will understand that additional components that are not shown may be required to implement the system.
- the illustrated components are for illustration only, and therefore are not to scale.
- FIG. 2 a method of using a fluid in the treatment of a hydrocarbon reservoir 24 is illustrated.
- a hydrocarbon fluid is injected into the hydrocarbon reservoir 24 , the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer.
- this stage may be accomplished as follows. Hydrocarbon fluid is initially contained within a reservoir 10 . Reservoir 10 may be, for example, a tanker truck or a large vessel. The hydrocarbon fluid is pumped from reservoir 10 down line 12 , where various chemicals may be added to the fluid. In some embodiments, the hydrocarbon fluid is stored in reservoir 10 with the hydrophobic laminar flow enhancer, and thus no chemicals may need to be added. In the system illustrated, hydrophobic flow enhancer may be added via an enhancer addition system 14 .
- a high pressure pump 20 injects the hydrocarbon fluid down a well 22 and into hydrocarbon reservoir 24 .
- the specifics of fracturing treatments such as this are well known, and need not be described here.
- the method further comprises applying pressure to the hydrocarbon fluid injected into the hydrocarbon reservoir 24 .
- the pressure may be sufficient to cause fracturing of the hydrocarbon reservoir.
- the hydrocarbon fluid is injected into the hydrocarbon reservoir along with a drive fluid, for example comprising carbon dioxide, LPG, or nitrogen.
- the hydrocarbon fluid is recovered from the hydrocarbon reservoir 24 .
- this stage may be accomplished as follows.
- the spent hydrocarbon fluid is returned from hydrocarbon reservoir 24 through well 22 , using a pump 26 for example.
- the recovered hydrocarbon fluid may then be stored, processed for re-use, sold, or disposed of.
- the hydrocarbon fluid is at least partially recovered.
- the recovered hydrocarbon fluid is then cleaned by removing contaminants from the recovered hydrocarbon fluid that have been introduced into the hydrocarbon fluid from the hydrocarbon reservoir 24 .
- the contaminants may comprise at least one of water, volatile hydrocarbons and fine particulates.
- this stage may be accomplished as follows.
- the hydrocarbon fluid may be passed through a line 34 into a water separation unit 68 .
- Unit 68 may be any type of water separation unit. Water may comprise one of the contaminants that is introduced downhole into the hydrocarbon fluid.
- unit 68 has several weirs 70 , 72 , designed to allow water to collect at the bottom of each compartment defined by the weirs, in order that the water may be removed from the hydrocarbon fluid via lines 78 , 80 .
- water 74 and hydrocarbon 76 layers are illustrated for reference, although the relative amounts of water and hydrocarbon are not to scale.
- the cleaning stage 54 may also comprise removing water through one or more of decanting, centrifuging, skimming, and drying.
- De-watered hydrocarbon fluid is then passed from unit 68 into line 84 into a vapor removal unit 28 .
- Unit 28 may be designed to remove volatile contaminants by for example heating the recovered hydrocarbon fluid.
- sufficient volatile components are removed to cause the recovered hydrocarbon fluid to have a flash point greater than 10° C. and a Reid vapor pressure of at least 2 psi.
- the Reid vapor pressure is 4 kPa.
- sufficient volatiles are removed to meet the local regulations as required. This may be accomplished by heating the hydrocarbon fluid (indicated by reference numeral 30 ) using heating coil 32 as shown, which may for example be any of various types of heaters, such as a conduit carrying heated fluid.
- An exemplary treatment may comprise heating the recovered hydrocarbon fluid to 80 degrees C. for 15 minutes with a ramp up and ramp down. This may remove any C5 and under hydrocarbons, for example.
- a vacuum may be applied, via line 82 for example, to the recovered hydrocarbon fluid to remove the volatile components.
- the line 82 may be connected to a pump or other vacuum source 83 , and the pump or other vacuum source 83 may pump vapors out to a vapor disposal unit 85 , such as a flare or vapor recovery system.
- Unit 38 may comprise at least one filter 42 , for example, for removing solid particles.
- the filtering of the recovered hydrocarbon fluid may comprise removing particles greater than 1 ⁇ m in diameter, for example.
- the filtered solid particles are illustrated by reference numeral 40 for example.
- the oil-water separator, the vapor removal unit and the solids removal unit are connected together for sequential processing of the hydrocarbon fluid to clean the hydrocarbon fluid for subsequent re-use.
- the position of units 68 , 28 , and 38 in the process line may be interchanged or switched. For example, it may be beneficial to filter the hydrocarbon fluid prior to removing volatiles and water.
- other cleaning stages or units may be added as desired.
- the cleaned and recovered hydrocarbon fluid Prior to cleaning, the cleaned and recovered hydrocarbon fluid may be passed from unit 38 via line 44 into, for example, a reservoir 46 for storage. In other embodiments, the cleaned and recovered hydrocarbon fluid may be passed back into reservoir 10 via line 49 for example.
- the cleaned and recovered hydrocarbon fluid may be passed to a sales line.
- the hydrocarbon fluid is at least partially cleaned.
- the units 68 , 28 and 38 may be mounted together as a unit 81 for example on a trailer bed or skid 87 for mobile operation.
- a stage 56 the hydrocarbon fluid is re-used by injecting the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir.
- this stage may be accomplished as follows.
- the cleaned and recovered hydrocarbon fluid is passed, via line 49 , into reservoir 10 , where it is prepared and injected into hydrocarbon reservoir 24 in a fashion similar to stage 50 .
- the at least one subsequent hydrocarbon reservoir comprises the hydrocarbon reservoir 24 .
- the at least one subsequent hydrocarbon reservoir comprises a second hydrocarbon reservoir.
- Re-using may further comprise applying pressure to the cleaned and recovered hydrocarbon fluid injected into the subsequent hydrocarbon reservoir, in a fashion similar to stage 50 .
- the pressure applied to the cleaned and recovered hydrocarbon fluid injected into the subsequent hydrocarbon reservoir may be sufficient to cause fracturing of the subsequent hydrocarbon reservoir.
- Hydrophobic laminar flow enhancer may be added to the recovered and cleaned hydrocarbon fluid before or during re-use of the recovered and cleaned hydrocarbon fluid, via addition units 48 or 14 , for example.
- the hydrocarbon fluid is at least partially re-used. In some embodiments, the hydrocarbon fluid is re-used in at least two different wells or reservoirs.
- gelling agents may be used in the hydrocarbon fluid.
- the hydrocarbon fluid excludes a gelling agent.
- Gelling agents tend to be hard to remove from hydrocarbon fluids, and may decrease the value of the hydrocarbon fluid when present.
- Spent gelling agents also present a clean-up cost required to make the hydrocarbon fluid ready for sale or further fracturing treatments.
- Gelling agents are also typically used in large concentrations, and absorb water while in the formation, further increasing clean-up costs.
- the presence of gelling agents, namely phosphorous containing gelling agents have also been identified as the causes of extensive complications in downstream facilities, where certain varieties are known to plug distillation trays and shut down refineries.
- the hydrophobic laminar flow enhancer allows large amounts of proppant to be carried downhole in the hydrocarbon fluid, and thus a gelling agent may not be required.
- a further method of using a fluid in the treatment of a hydrocarbon reservoir is disclosed.
- a hydrocarbon fluid is injected into the hydrocarbon reservoir 24 , the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer.
- This stage may be carried out in a fashion similar to stage 50 , for example.
- a stage 60 shown in FIG. 3
- the hydrocarbon fluid from is recovered from the hydrocarbon reservoir 24 .
- This stage may be carried out in a fashion similar to stage 52 , for example.
- This method may further comprise, for example, a further stage similar to stage 54 comprising cleaning the recovered hydrocarbon fluid by removing contaminants from the recovered hydrocarbon fluid that have been introduced into the hydrocarbon fluid from the hydrocarbon reservoir.
- the hydrocarbon fluid is to be re-used by injection of the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir.
- a hydrocarbon fluid is cleaned.
- the hydrocarbon fluid has been previously injected into and subsequently recovered from hydrocarbon reservoir 24 during a treatment of the hydrocarbon reservoir 24 .
- the cleaning comprises removing contaminants from the recovered hydrocarbon fluid that have been introduced into the hydrocarbon fluid from the hydrocarbon reservoir 24 .
- the hydrocarbon fluid comprises hydrocarbons and a hydrophobic laminar flow enhancer.
- the treatment of the hydrocarbon reservoir 24 may be a fracturing operation.
- This method may further comprise injecting the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir, for example. Further, in some embodiments the hydrocarbon fluid is to be re-used by injection of the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir.
- Stage 62 may be carried out in a fashion similar to stage 54 .
- FIG. 5 a method of re-using a hydrocarbon fluid previously used in a treatment of a hydrocarbon reservoir is illustrated.
- the hydrocarbon fluid had been injected into and subsequently recovered from the hydrocarbon reservoir and cleaned to remove contaminants introduced into the hydrocarbon fluid from the hydrocarbon reservoir.
- the cleaned and recovered hydrocarbon fluid is injected into at least one subsequent hydrocarbon reservoir, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer.
- Stage 64 may be carried out in a fashion similar to stage 56 .
- the hydrocarbon fluid excludes liquefied petroleum gas. Excluding may refer to there being less than 1% of the excluded component present. In other embodiments, excluding may refer to there being less than 0.1 or 0.01% of the excluded component present. In other embodiments, the hydrocarbon fluid comprises liquefied petroleum gas. LPG is advantageous, since it may be vaporized and easily removed from hydrocarbon reservoir 24 during treatment.
- a method of using a fluid in the treatment of a hydrocarbon reservoir is also disclosed.
- a hydrocarbon fluid is injected into the hydrocarbon reservoir 24 , the hydrocarbon fluid comprising liquefied petroleum gas and a laminar flow enhancer.
- the laminar flow enhancer may be present in an amount of less than 1% by weight of the hydrocarbon fluid, for example.
- the hydrocarbon fluid may further comprise C6+ hydrocarbon fluid.
- the C6+ hydrocarbon fluid is combined with laminar flow enhancer and then mixed with liquefied petroleum gas prior to injection into the well.
- Proppant may be added to the C6+ hydrocarbon fluid prior to mixing with liquefied petroleum gas.
- the laminar flow enhancer is hydrophobic.
- the hydrocarbon fluid may be injected into the well along with a drive fluid. In stage 92 (shown in FIG. 6 ), pressure is applied to the hydrocarbon fluid injected into the hydrocarbon reservoir 24 .
- the fracture treatment may combine a hydrocarbon fluid excluding LPG and a hydrocarbon fluid comprising LPG.
- the treatment may combine a gelled LPG stream with proppant and a non-gelled stabilized hydrocarbon liquid with proppant which may be friction reduced. Friction reduction chemicals may be purchased commercially.
- the methods disclosed herein may have various steps added to them, for example, adding repetition steps.
- the method disclosed in FIG. 4 may have the steps of stage 50 , 52 , and 54 added to it.
- the method illustrated in FIG. 6 may further comprise recovering, cleaning and re-using the hydrocarbon fluid.
- transport and processing steps may be added.
- the methods disclosed herein may be applied to an unconventional tight gas reservoir.
Abstract
A hydrocarbon well treatment fluid is made recyclable by introducing a laminar flow enhancer into the fluid, resulting in a formulation called Slick Oil™ hydrocarbon fluid. A method of using a fluid in the treatment of a hydrocarbon reservoir is disclosed. A hydrocarbon fluid is injected into the hydrocarbon reservoir, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer. The hydrocarbon fluid is recovered from the hydrocarbon reservoir. The recovered hydrocarbon fluid is then cleaned by removing contaminants from the recovered hydrocarbon fluid that have been introduced into the hydrocarbon fluid from the hydrocarbon reservoir. The hydrocarbon fluid is then re-used by injecting the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir. Proppant carrying abilities of a hydrocarbon fracturing fluid are enhanced by introducing a laminar flow enhancer into the fluid, resulting in a formulation called Slick Oil™ hydrocarbon fluid.
Description
- Treatment of hydrocarbon reservoirs to enhance production.
- Production may be increased from a hydrocarbon reservoir by fracturing the reservoir with hydraulic fluid. Water is often used as the hydraulic fluid since it is inexpensive. However, water tends to damage, and may reduce production from, hydrocarbon reservoirs. Hydrocarbon fluids may also be used for hydraulic fracturing since hydrocarbon fluids tend to cause less formation damage, but hydrocarbon fluids are considerably more expensive than water in many locations, such as for example North America. An inexpensive method of fracturing a hydrocarbon reservoir with hydrocarbon is required.
- Fractures caused by fracturing may be kept open by introducing particulates known as proppant into the hydrocarbon reservoir along with the hydraulic fluid. Liquefied petroleum gas may be advantageously used as the hydraulic fluid, but causing the liquefied petroleum gas to carry sufficient proppant may introduce other problems, such as recovery and disposal of a gellant used to increase the viscosity of the hydraulic fluid. A novel method of fracturing a hydrocarbon reservoir with hydrocarbon fluid is required.
- In an embodiment, a hydrocarbon well treatment fluid is made recyclable by introducing a laminar flow enhancer into the fluid, resulting in a formulation called Slick Oil™ hydrocarbon fluid.
- In a further embodiment, proppant carrying abilities of a hydrocarbon fracturing fluid are enhanced by introducing a laminar flow enhancer into the fluid, resulting in a formulation called Slick Oil™ hydrocarbon fluid.
- Also, a method of using a fluid in the treatment of a hydrocarbon reservoir is disclosed. A hydrocarbon fluid is injected into the hydrocarbon reservoir, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer. The hydrocarbon fluid is recovered from the hydrocarbon reservoir. The recovered hydrocarbon fluid is then cleaned by removing contaminants from the recovered hydrocarbon fluid that have been introduced into the hydrocarbon fluid from the hydrocarbon reservoir. The hydrocarbon fluid is then re-used by injecting the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir.
- A method of using a fluid in the treatment of a hydrocarbon reservoir is also disclosed. A hydrocarbon fluid is injected into the hydrocarbon reservoir, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer. The hydrocarbon fluid is then recovered from the hydrocarbon reservoir.
- A method is also disclosed comprising cleaning a hydrocarbon fluid that has been injected into and subsequently recovered from a hydrocarbon reservoir during a treatment of the hydrocarbon reservoir, the cleaning comprising removing contaminants from the recovered hydrocarbon fluid that have been introduced into the hydrocarbon fluid from the hydrocarbon reservoir, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer.
- A method of re-using a hydrocarbon fluid previously used in a treatment of a hydrocarbon reservoir during which the hydrocarbon fluid was injected into and subsequently recovered from the hydrocarbon reservoir and cleaned to remove contaminants introduced into the hydrocarbon fluid from the hydrocarbon reservoir, is also disclosed. The method comprises injecting the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer.
- In some embodiments of the methods disclosed herein, the hydrocarbon fluid excludes liquefied petroleum gas. In other embodiments of the methods disclosed herein, the hydrocarbon fluid comprises liquefied petroleum gas.
- In another embodiment, there is provided apparatus for treating hydrocarbon fluid recovered from a well.
- A method of using a fluid in the treatment of a hydrocarbon reservoir is also disclosed. A hydrocarbon fluid is injected into the hydrocarbon reservoir, the hydrocarbon fluid comprising liquefied petroleum gas and a laminar flow enhancer. Pressure is applied to the hydrocarbon fluid injected into the hydrocarbon reservoir.
- These and other aspects of the device and method are set out in the claims, which are incorporated here by reference.
- Embodiments will now be described with reference to the figures, in which like reference characters denote like elements, by way of example, and in which:
-
FIG. 1 is a side elevation view of a treatment system designed to carry out the methods disclosed herein. -
FIG. 2 is a flow diagram of a method of using a fluid in the treatment of a hydrocarbon reservoir. -
FIG. 3 is a flow diagram of a method of using a fluid in the treatment of a hydrocarbon reservoir. -
FIG. 4 is a flow diagram of a method of cleaning a hydrocarbon fluid that has been injected into and subsequently recovered from a hydrocarbon reservoir during a treatment of the hydrocarbon reservoir. -
FIG. 5 is a flow diagram of a method of re-using a hydrocarbon fluid previously used in a treatment of a hydrocarbon reservoir. -
FIG. 6 is a flow diagram of a method of using a fluid in the treatment of a hydrocarbon reservoir. -
FIG. 7 is a metals analysis of a sample of hydrocarbon fluid with UFV-100. - Immaterial modifications may be made to the embodiments described here without departing from what is covered by the claims.
- Laminar flow enhancers may be added to oil, in order to allow the oil to go down a pipeline faster and easier. The flow enhancer operates by allowing the oil to move in a more laminar flow, thus reducing turbulence. These characteristics reduce the drag and friction between the oil and the pipeline, thus reducing the pressure required to pump the oil. Laminar flow enhancers may be polymers, for example polymerized hydrocarbons, thus adding viscosity to the hydrocarbon fluid, which reduces the turbulence induced as the fluid flows. Reductions in fluid friction of 50 to 60% are possible. Laminar flow enhancers tend to lubricate the oil, making the oil travel in sheets as the polymers slide in relation to one another, which results in a reduction or elimination of turbulent flow. Examples of hydrophobic flow enhancers include OFR-2 by Weatherford.
- The laminar flow enhancer used in the embodiments herein may be hydrophobic. Hydrophilic laminar flow enhancers are less desirable, as they tend to absorb additional water from the formation, thus increasing the cost of cleaning the recovered hydrocarbon fluid. In addition, hydrophilic enhancers may plate out in the formation alongside formation water, thus plugging the pores of the formation. In some embodiments, the hydrophobic laminar flow enhancers disclosed herein do not plate out in the well or formation. In addition, the hydrophobic laminar flow enhancer may be a non-emulsifier, thus allowing any water absorbed into the hydrocarbon fluid from the hydrocarbon reservoir to be easily removable. The hydrophobic laminar flow enhancer may be used in very low concentration, such as less than 0.5-1% for example. At sufficiently low concentrations, the enhancer is not required to be listed on the MSDS of the fluid. In some embodiments, the hydrophobic flow enhancer may be easily removable from the hydrocarbon fluid. An example of a hydrocarbon fluid that has all of these characteristics is Slick Oil™ fluid supplied by SynOil Fluids of Calgary, Alberta, Canada. Slick Oil™ fluid will absorb very little measurable water during a downhole treatment. Examples of suitable hydrophobic flow enhancers include those disclosed in U.S. Pat. No. 6,395,852, and OFR-2 (Weatherford). In some embodiments, the hydrophobic laminar flow enhancer comprises a friction reducer. An example of such a hydrophobic laminar flow enhancer is EC6507A, made by Nalco.
- A further embodiment of a hydrophobic flow enhancer that comprises a friction reducer is UFV-100, available from Uniquem Inc., 240 Everwillow Green SW, Calgary, AB, T2Y 4V9. UFV-100 is advantageous because it is imparts additional viscosity to the hydrocarbon fluid. UFV-100 is shown in the Table 1 below as being added in, for example, amounts of 0.5 to 5.5 liters/m3 of the hydrocarbon fluid to get sufficient viscosity to carry proppant. In Table 1, the frac oils (hydrocarbon fluid) used were obtained from Synoil fluids in Calgary, AB. Referring to
FIG. 7 , a metals analysis of a sample of hydrocarbon fluid with UFV-100 demonstrates that UFV-100 contains little or no phosphorus, which is known to cause fouling issues in refineries. Hydrocarbon frac fluids with UFV-100 may filter easily through 5 micron filters. -
TABLE 1 Viscosities of hydraulic frac fluid comprising UFV-100 Concentration Viscosity Viscosity Frac oil DG1 (L/m3) (centipoise) (centipoise) TG740 4 6 6 SF770 5.5 5 4 SF790 3.5 5 4 SF800 2.5 5 6 SF820 1.5 5 6 SF830 0.5 4 4 SF840 0.5 8 8 SF860 0.5 16 11 - Referring to
FIG. 1 , an exemplary system is illustrated for carrying out the embodiments of the methods disclosed herein. The system illustrated is a general schematic, and a skilled worker will understand that additional components that are not shown may be required to implement the system. The illustrated components are for illustration only, and therefore are not to scale. Referring toFIG. 2 , a method of using a fluid in the treatment of ahydrocarbon reservoir 24 is illustrated. - Referring to
FIG. 1 , in a stage 50 (shown inFIG. 2 ), a hydrocarbon fluid is injected into thehydrocarbon reservoir 24, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer. InFIG. 1 , this stage may be accomplished as follows. Hydrocarbon fluid is initially contained within areservoir 10.Reservoir 10 may be, for example, a tanker truck or a large vessel. The hydrocarbon fluid is pumped fromreservoir 10 downline 12, where various chemicals may be added to the fluid. In some embodiments, the hydrocarbon fluid is stored inreservoir 10 with the hydrophobic laminar flow enhancer, and thus no chemicals may need to be added. In the system illustrated, hydrophobic flow enhancer may be added via anenhancer addition system 14. Other components may be added as well, such as gelling agent and proppant, fromaddition systems high pressure pump 20 injects the hydrocarbon fluid down a well 22 and intohydrocarbon reservoir 24. The specifics of fracturing treatments such as this are well known, and need not be described here. In some embodiments, such as during a fracturing treatment, the method further comprises applying pressure to the hydrocarbon fluid injected into thehydrocarbon reservoir 24. The pressure may be sufficient to cause fracturing of the hydrocarbon reservoir. In some embodiments (not shown), the hydrocarbon fluid is injected into the hydrocarbon reservoir along with a drive fluid, for example comprising carbon dioxide, LPG, or nitrogen. - In a stage 52 (shown in
FIG. 2 ), the hydrocarbon fluid is recovered from thehydrocarbon reservoir 24. InFIG. 1 , this stage may be accomplished as follows. The spent hydrocarbon fluid is returned fromhydrocarbon reservoir 24 through well 22, using apump 26 for example. The recovered hydrocarbon fluid may then be stored, processed for re-use, sold, or disposed of. In some embodiments, the hydrocarbon fluid is at least partially recovered. - In a stage 54 (shown in
FIG. 2 ), the recovered hydrocarbon fluid is then cleaned by removing contaminants from the recovered hydrocarbon fluid that have been introduced into the hydrocarbon fluid from thehydrocarbon reservoir 24. The contaminants may comprise at least one of water, volatile hydrocarbons and fine particulates. InFIG. 1 , this stage may be accomplished as follows. The hydrocarbon fluid may be passed through aline 34 into awater separation unit 68.Unit 68 may be any type of water separation unit. Water may comprise one of the contaminants that is introduced downhole into the hydrocarbon fluid. In the embodiment illustrated,unit 68 hasseveral weirs lines water 74 andhydrocarbon 76 layers are illustrated for reference, although the relative amounts of water and hydrocarbon are not to scale. In some embodiments, the cleaningstage 54 may also comprise removing water through one or more of decanting, centrifuging, skimming, and drying. - De-watered hydrocarbon fluid is then passed from
unit 68 intoline 84 into avapor removal unit 28.Unit 28 may be designed to remove volatile contaminants by for example heating the recovered hydrocarbon fluid. In some embodiments, sufficient volatile components are removed to cause the recovered hydrocarbon fluid to have a flash point greater than 10° C. and a Reid vapor pressure of at least 2 psi. In some embodiments, the Reid vapor pressure is 4 kPa. In other embodiments, sufficient volatiles are removed to meet the local regulations as required. This may be accomplished by heating the hydrocarbon fluid (indicated by reference numeral 30) usingheating coil 32 as shown, which may for example be any of various types of heaters, such as a conduit carrying heated fluid. An exemplary treatment may comprise heating the recovered hydrocarbon fluid to 80 degrees C. for 15 minutes with a ramp up and ramp down. This may remove any C5 and under hydrocarbons, for example. In some embodiments, a vacuum may be applied, vialine 82 for example, to the recovered hydrocarbon fluid to remove the volatile components. Theline 82 may be connected to a pump orother vacuum source 83, and the pump orother vacuum source 83 may pump vapors out to avapor disposal unit 85, such as a flare or vapor recovery system. - Once sufficient volatiles are removed, the partially cleaned hydrocarbon fluid is then passed via
line 36 into asolids removal unit 38.Unit 38 may comprise at least onefilter 42, for example, for removing solid particles. The filtering of the recovered hydrocarbon fluid may comprise removing particles greater than 1 μm in diameter, for example. The filtered solid particles are illustrated byreference numeral 40 for example. - In some embodiments, the oil-water separator, the vapor removal unit and the solids removal unit are connected together for sequential processing of the hydrocarbon fluid to clean the hydrocarbon fluid for subsequent re-use. It should be understood that, during the cleaning stage, the position of
units unit 38 vialine 44 into, for example, areservoir 46 for storage. In other embodiments, the cleaned and recovered hydrocarbon fluid may be passed back intoreservoir 10 vialine 49 for example. In further embodiments, the cleaned and recovered hydrocarbon fluid may be passed to a sales line. In some embodiments, the hydrocarbon fluid is at least partially cleaned. In addition, theunits unit 81 for example on a trailer bed orskid 87 for mobile operation. - In a stage 56 (shown in
FIG. 2 ), the hydrocarbon fluid is re-used by injecting the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir. InFIG. 1 , this stage may be accomplished as follows. The cleaned and recovered hydrocarbon fluid is passed, vialine 49, intoreservoir 10, where it is prepared and injected intohydrocarbon reservoir 24 in a fashion similar tostage 50. In this way, the at least one subsequent hydrocarbon reservoir comprises thehydrocarbon reservoir 24. In other embodiments (not illustrated), the at least one subsequent hydrocarbon reservoir comprises a second hydrocarbon reservoir. Re-using may further comprise applying pressure to the cleaned and recovered hydrocarbon fluid injected into the subsequent hydrocarbon reservoir, in a fashion similar tostage 50. In these embodiments, the pressure applied to the cleaned and recovered hydrocarbon fluid injected into the subsequent hydrocarbon reservoir may be sufficient to cause fracturing of the subsequent hydrocarbon reservoir. Hydrophobic laminar flow enhancer may be added to the recovered and cleaned hydrocarbon fluid before or during re-use of the recovered and cleaned hydrocarbon fluid, viaaddition units - As disclosed above, in some embodiments, gelling agents may be used in the hydrocarbon fluid. However, in other embodiments, the hydrocarbon fluid excludes a gelling agent. Gelling agents tend to be hard to remove from hydrocarbon fluids, and may decrease the value of the hydrocarbon fluid when present. Spent gelling agents also present a clean-up cost required to make the hydrocarbon fluid ready for sale or further fracturing treatments. Gelling agents are also typically used in large concentrations, and absorb water while in the formation, further increasing clean-up costs. The presence of gelling agents, namely phosphorous containing gelling agents, have also been identified as the causes of extensive complications in downstream facilities, where certain varieties are known to plug distillation trays and shut down refineries.
- The hydrophobic laminar flow enhancer allows large amounts of proppant to be carried downhole in the hydrocarbon fluid, and thus a gelling agent may not be required. This represents a huge technical advantage, namely when LPG fluids are used, because this overcomes the limitation of the relatively small proppant volumes usable with conventional LPG systems, as the amount of proppant that can be pumped with the LPG is greatly increased.
- Referring to
FIG. 3 , a further method of using a fluid in the treatment of a hydrocarbon reservoir is disclosed. Referring toFIG. 1 , in a stage 58 (shown inFIG. 3 ), a hydrocarbon fluid is injected into thehydrocarbon reservoir 24, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer. This stage may be carried out in a fashion similar tostage 50, for example. In a stage 60 (shown inFIG. 3 ), the hydrocarbon fluid from is recovered from thehydrocarbon reservoir 24. This stage may be carried out in a fashion similar tostage 52, for example. This method may further comprise, for example, a further stage similar to stage 54 comprising cleaning the recovered hydrocarbon fluid by removing contaminants from the recovered hydrocarbon fluid that have been introduced into the hydrocarbon fluid from the hydrocarbon reservoir. In some embodiments, the hydrocarbon fluid is to be re-used by injection of the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir. - Referring to
FIG. 4 , a further method is illustrated. Referring toFIG. 1 , in a stage 62 (shown inFIG. 4 ), a hydrocarbon fluid is cleaned. The hydrocarbon fluid has been previously injected into and subsequently recovered fromhydrocarbon reservoir 24 during a treatment of thehydrocarbon reservoir 24. The cleaning comprises removing contaminants from the recovered hydrocarbon fluid that have been introduced into the hydrocarbon fluid from thehydrocarbon reservoir 24. The hydrocarbon fluid comprises hydrocarbons and a hydrophobic laminar flow enhancer. The treatment of thehydrocarbon reservoir 24 may be a fracturing operation. This method may further comprise injecting the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir, for example. Further, in some embodiments the hydrocarbon fluid is to be re-used by injection of the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir.Stage 62 may be carried out in a fashion similar tostage 54. - Referring to
FIG. 5 , a method of re-using a hydrocarbon fluid previously used in a treatment of a hydrocarbon reservoir is illustrated. During the treatment, the hydrocarbon fluid had been injected into and subsequently recovered from the hydrocarbon reservoir and cleaned to remove contaminants introduced into the hydrocarbon fluid from the hydrocarbon reservoir. Referring toFIG. 1 , in a stage 64 (shown inFIG. 5 ), the cleaned and recovered hydrocarbon fluid is injected into at least one subsequent hydrocarbon reservoir, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer.Stage 64 may be carried out in a fashion similar tostage 56. - In some embodiments, the hydrocarbon fluid excludes liquefied petroleum gas. Excluding may refer to there being less than 1% of the excluded component present. In other embodiments, excluding may refer to there being less than 0.1 or 0.01% of the excluded component present. In other embodiments, the hydrocarbon fluid comprises liquefied petroleum gas. LPG is advantageous, since it may be vaporized and easily removed from
hydrocarbon reservoir 24 during treatment. - Referring to
FIG. 6 , a method of using a fluid in the treatment of a hydrocarbon reservoir is also disclosed. Referring toFIG. 1 , in stage 90 (shown inFIG. 6 ), a hydrocarbon fluid is injected into thehydrocarbon reservoir 24, the hydrocarbon fluid comprising liquefied petroleum gas and a laminar flow enhancer. The laminar flow enhancer may be present in an amount of less than 1% by weight of the hydrocarbon fluid, for example. The hydrocarbon fluid may further comprise C6+ hydrocarbon fluid. In some embodiments, the C6+ hydrocarbon fluid is combined with laminar flow enhancer and then mixed with liquefied petroleum gas prior to injection into the well. Proppant may be added to the C6+ hydrocarbon fluid prior to mixing with liquefied petroleum gas. In some embodiments, the laminar flow enhancer is hydrophobic. The hydrocarbon fluid may be injected into the well along with a drive fluid. In stage 92 (shown inFIG. 6 ), pressure is applied to the hydrocarbon fluid injected into thehydrocarbon reservoir 24. - In some embodiments, the fracture treatment may combine a hydrocarbon fluid excluding LPG and a hydrocarbon fluid comprising LPG. For example, the treatment may combine a gelled LPG stream with proppant and a non-gelled stabilized hydrocarbon liquid with proppant which may be friction reduced. Friction reduction chemicals may be purchased commercially.
- It should be understood that the methods disclosed herein may have various steps added to them, for example, adding repetition steps. For further example, the method disclosed in
FIG. 4 may have the steps ofstage FIG. 6 may further comprise recovering, cleaning and re-using the hydrocarbon fluid. In another example, transport and processing steps may be added. In some embodiments, the methods disclosed herein may be applied to an unconventional tight gas reservoir. - In the claims, the word “comprising” is used in its inclusive sense and does not exclude other elements being present. The indefinite article “a” before a claim feature does not exclude more than one of the feature being present. Each one of the individual features described here may be used in one or more embodiments and is not, by virtue only of being described here, to be construed as essential to all embodiments as defined by the claims.
Claims (32)
1. A method of using a fluid in the treatment of a hydrocarbon reservoir, the method comprising:
injecting a hydrocarbon fluid into the hydrocarbon reservoir, the hydrocarbon fluid comprising hydrocarbons and a hydrophobic laminar flow enhancer;
recovering the hydrocarbon fluid from the hydrocarbon reservoir;
cleaning the recovered hydrocarbon fluid by removing contaminants from the recovered hydrocarbon fluid that have been introduced into the hydrocarbon fluid from the hydrocarbon reservoir; and
re-using the hydrocarbon fluid by injecting the cleaned and recovered hydrocarbon fluid into at least one subsequent hydrocarbon reservoir.
2. The method of claim 1 in which the at least one subsequent hydrocarbon reservoir comprises the hydrocarbon reservoir.
3. The method of claim 1 in which the at least one subsequent hydrocarbon reservoir comprises a second hydrocarbon reservoir.
4. The method of claim 1 further comprising applying pressure to the hydrocarbon fluid injected into the hydrocarbon reservoir.
5. The method of claim 4 in which the pressure is sufficient to cause fracturing of the hydrocarbon reservoir.
6. The method of claim 1 in which re-using further comprises applying pressure to the cleaned and recovered hydrocarbon fluid injected into the subsequent hydrocarbon reservoir.
7. The method of claim 6 in which the pressure applied to the cleaned and recovered hydrocarbon fluid injected into the subsequent hydrocarbon reservoir is sufficient to cause fracturing of the subsequent hydrocarbon reservoir.
8. The method of claim 1 in which removing contaminants comprises removing solid particles.
9. The method of claim 8 in which removing solid particles comprises filtering.
10. The method of claim 9 in which filtering of the recovered hydrocarbon fluid comprises removing particles greater than 1 μm in diameter.
11. The method of claim 1 in which removing contaminants comprises heating the recovered hydrocarbon fluid to remove volatile components.
12. The method of claim 11 in which sufficient volatile components are removed to cause the recovered hydrocarbon fluid to have a flash point greater than 10° C. and a Reid vapour pressure of at least 2 psi.
13. The method of claim 1 in which removing contaminants comprises applying a vacuum to the recovered hydrocarbon fluid to remove volatile components.
14. The method of claim 1 in which removing contaminants comprises removing water from the recovered hydrocarbon fluid.
15. The method of claim 14 in which removing water comprises one or more of decanting, centrifuging, skimming, and drying.
16. The method of claim 1 in which the hydrophobic laminar flow enhancer comprises a polymerized hydrocarbon.
17. The method of claim 1 in which the hydrocarbon fluid is initially injected into the hydrocarbon reservoir with proppant.
18. The method of claim 1 in which the hydrophobic laminar flow enhancer is present in an amount of less than 1% by weight of the hydrocarbon fluid.
19. The method of claim 1 in which the hydrocarbon fluid is injected into the hydrocarbon reservoir along with a drive fluid.
20. The method of claim 19 in which the drive fluid comprises carbon dioxide, liquefied petroleum gas, or nitrogen.
21. The method of claim 1 in which hydrophobic laminar flow enhancer is added to the recovered and cleaned hydrocarbon fluid before or during re-use of the recovered and cleaned hydrocarbon fluid.
22-29. (canceled)
30. The method of claim 1 in which the hydrocarbon fluid excludes a is free of gelling agent.
31. The method of claim 1 in which the hydrocarbon fluid excludes is free of liquefied petroleum gas.
32. The method of claim 1 in which the hydrocarbon fluid comprises liquefied petroleum gas.
33-36. (canceled)
37. A method of using a fluid in the treatment of a hydrocarbon reservoir, the method comprising:
injecting a hydrocarbon fluid into the hydrocarbon reservoir, the hydrocarbon fluid comprising liquefied petroleum gas and a laminar flow enhancer; and
applying pressure to the hydrocarbon fluid injected into the hydrocarbon reservoir.
38. The method of claim 37 in which the pressure applied to the hydrocarbon fluid is sufficient to cause fracturing of the hydrocarbon reservoir.
39. The method of claim 37 in which the hydrocarbon fluid further comprises C6+ hydrocarbon fluid.
40. The method of claim 39 in which the C6+ hydrocarbon fluid is combined with laminar flow enhancer and then mixed with liquefied petroleum gas prior to injection into the well.
41-48. (canceled)
49. The method of claim 1 in which the hydrocarbons comprise liquefied petroleum gas.
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US12/605,235 US20100132942A1 (en) | 2008-10-23 | 2009-10-23 | Hydrocarbon reservoir treatment method with hydrocarbons |
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US12/605,235 US20100132942A1 (en) | 2008-10-23 | 2009-10-23 | Hydrocarbon reservoir treatment method with hydrocarbons |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090229825A1 (en) * | 2007-12-31 | 2009-09-17 | Synoil Fluids Holdings Inc. | Treatment of stimulating fluid |
WO2021025718A1 (en) * | 2019-08-06 | 2021-02-11 | Collins Kyle | Automated drilling-fluid additive system and method |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3137344A (en) * | 1960-05-23 | 1964-06-16 | Phillips Petroleum Co | Minimizing loss of driving fluids in secondary recovery |
US3757864A (en) * | 1971-05-12 | 1973-09-11 | Dow Chemical Co | Friction reducing and gelling agent for organic liquids |
US5080809A (en) * | 1983-01-28 | 1992-01-14 | Phillips Petroleum Company | Polymers useful in the recovery and processing of natural resources |
US6395852B1 (en) * | 1997-05-09 | 2002-05-28 | Basf Aktiengesellschaft | Flow enhancer for petroleum middle distillates |
US20020152889A1 (en) * | 2000-05-19 | 2002-10-24 | Baker Richard W. | Gas separation using organic-vapor-resistant membranes in conjunction with organic-vapor-selective membranes |
US20030008781A1 (en) * | 1999-12-29 | 2003-01-09 | Gupta D.V. Satyanaryana | Method for fracturing subterranean formations |
US20040016676A1 (en) * | 2002-07-24 | 2004-01-29 | Newton Jeffrey P. | Production of lower molecular weight dydrocarbons |
US20070173417A1 (en) * | 2006-01-26 | 2007-07-26 | Bj Services Company | Porous composites containing hydrocarbon-soluble well treatment agents and methods for using the same |
US20070204991A1 (en) * | 2006-03-03 | 2007-09-06 | Loree Dwight N | Liquified petroleum gas fracturing system |
US20070277977A1 (en) * | 2006-06-05 | 2007-12-06 | Synoil Fluids Holdings Inc. | Recycling hydrocarbon hydraulic stimulation fluid |
US20080087425A1 (en) * | 2006-08-10 | 2008-04-17 | Chia-Fu Hsu | Methods for producing oil and/or gas |
US20080190814A1 (en) * | 2006-02-09 | 2008-08-14 | Gerard Caneba | Multifunctional multipolymeric surfactants for oil and bitumen recovery and other applications |
US20090062158A1 (en) * | 2007-08-28 | 2009-03-05 | Janice Losasso | Rheology modifying agents and methods of modifying fluid rheology use in hydrocarbon recovery |
US7565933B2 (en) * | 2007-04-18 | 2009-07-28 | Clearwater International, LLC. | Non-aqueous foam composition for gas lift injection and methods for making and using same |
US20090211263A1 (en) * | 2008-02-27 | 2009-08-27 | Coyle David A | Apparatus and method for regasification of liquefied natural gas |
US20100051272A1 (en) * | 2008-09-02 | 2010-03-04 | Gas-Frac Energy Services Inc. | Liquified petroleum gas fracturing methods |
-
2009
- 2009-10-23 US US12/605,235 patent/US20100132942A1/en not_active Abandoned
Patent Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3137344A (en) * | 1960-05-23 | 1964-06-16 | Phillips Petroleum Co | Minimizing loss of driving fluids in secondary recovery |
US3757864A (en) * | 1971-05-12 | 1973-09-11 | Dow Chemical Co | Friction reducing and gelling agent for organic liquids |
US5080809A (en) * | 1983-01-28 | 1992-01-14 | Phillips Petroleum Company | Polymers useful in the recovery and processing of natural resources |
US6395852B1 (en) * | 1997-05-09 | 2002-05-28 | Basf Aktiengesellschaft | Flow enhancer for petroleum middle distillates |
US20030008781A1 (en) * | 1999-12-29 | 2003-01-09 | Gupta D.V. Satyanaryana | Method for fracturing subterranean formations |
US20020152889A1 (en) * | 2000-05-19 | 2002-10-24 | Baker Richard W. | Gas separation using organic-vapor-resistant membranes in conjunction with organic-vapor-selective membranes |
US20040016676A1 (en) * | 2002-07-24 | 2004-01-29 | Newton Jeffrey P. | Production of lower molecular weight dydrocarbons |
US20070173417A1 (en) * | 2006-01-26 | 2007-07-26 | Bj Services Company | Porous composites containing hydrocarbon-soluble well treatment agents and methods for using the same |
US20080190814A1 (en) * | 2006-02-09 | 2008-08-14 | Gerard Caneba | Multifunctional multipolymeric surfactants for oil and bitumen recovery and other applications |
US20070204991A1 (en) * | 2006-03-03 | 2007-09-06 | Loree Dwight N | Liquified petroleum gas fracturing system |
US20070277977A1 (en) * | 2006-06-05 | 2007-12-06 | Synoil Fluids Holdings Inc. | Recycling hydrocarbon hydraulic stimulation fluid |
US20080087425A1 (en) * | 2006-08-10 | 2008-04-17 | Chia-Fu Hsu | Methods for producing oil and/or gas |
US7565933B2 (en) * | 2007-04-18 | 2009-07-28 | Clearwater International, LLC. | Non-aqueous foam composition for gas lift injection and methods for making and using same |
US20090062158A1 (en) * | 2007-08-28 | 2009-03-05 | Janice Losasso | Rheology modifying agents and methods of modifying fluid rheology use in hydrocarbon recovery |
US20090211263A1 (en) * | 2008-02-27 | 2009-08-27 | Coyle David A | Apparatus and method for regasification of liquefied natural gas |
US20100051272A1 (en) * | 2008-09-02 | 2010-03-04 | Gas-Frac Energy Services Inc. | Liquified petroleum gas fracturing methods |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090229825A1 (en) * | 2007-12-31 | 2009-09-17 | Synoil Fluids Holdings Inc. | Treatment of stimulating fluid |
US8293102B2 (en) | 2007-12-31 | 2012-10-23 | Synoil Fluids Holdings Inc. | Treatment of stimulating fluid |
WO2021025718A1 (en) * | 2019-08-06 | 2021-02-11 | Collins Kyle | Automated drilling-fluid additive system and method |
US11187050B2 (en) | 2019-08-06 | 2021-11-30 | Kyle Collins | Automated drilling-fluid additive system and method |
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