CN105201471B - A kind of method of microbe oil production - Google Patents
A kind of method of microbe oil production Download PDFInfo
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- CN105201471B CN105201471B CN201510627563.8A CN201510627563A CN105201471B CN 105201471 B CN105201471 B CN 105201471B CN 201510627563 A CN201510627563 A CN 201510627563A CN 105201471 B CN105201471 B CN 105201471B
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Abstract
The invention discloses a kind of method of microbe oil production, belong to technical field of tertiary oil recovery；It is characterized in that comprise the following steps：(1) the biosurfactant displacement of reservoir oil；(2) flooding pattern adjusts；(3) the endogenous microbes displacement of reservoir oil；(4) microbial single well stimulation recovers the oil.This method improves the displacement efficiency of water-drive pool by injecting biosurfactant first；Then by the adjustment of flooding pattern, swept volume of the endogenous microbes in oil reservoir is expanded；The crude oil for displacing adjacent to oil well area is handled finally by microbial single well stimulation；So as to be finally reached the purpose for further improving oil recovery.The invention has the advantages that：Activator has source wide, cheap and the characteristics of do not injure stratum；Oil reservoir it is applied widely, be particularly suitable for the medium to high permeable rate oil reservoir of waterflooding development；Technique is simple, specific aim and workable；Field test results are good, and field test improves recovery ratio and is more than 15.0%.Therefore, the invention can be widely used in Microbial Enhanced Oil Recovery field.
Description
Technical field
The invention belongs to technical field of tertiary oil recovery, and in particular to a kind of method of microbe oil production.
Background technology
Microbial Enhanced Oil Recovery (Microbial Enhanced Oil Recovery) refers to using microorganism (mainly
Bacterium, ancient bacterium) and its technology of metabolite raising crude output and recovery ratio, compared with other tertiary oil recovery technologies, micro- life
Thing oil recovery technique has the characteristics that applied widely, technique is simple, good in economic efficiency, pollution-free, has a good application prospect,
Thus receive more and more attention.
Oil reservoir has formd local macropore because long-period water drive is developed, and conventional water drive is difficult that further improve is adopted
Yield, therefore, implement general first blocked up to oil reservoir progress deep of microbial oil displacement currently for middle and high infiltration oil reservoir and adjust, carry out micro- life afterwards
The thing displacement of reservoir oil, swept volume on the one hand is improved using deep profile controlling, on the other hand improve displacement efficiency using microbial oil displacement.But
The stifled calling in this method deep is polymer, because polymer price is high and refractory organicses, causes cost to increase and to follow-up water
Processing causes serious influence；Meanwhile follow-up microbial oil displacement is due to oil reservoir deep and adjacent to oil well area sphere of action
It is limited, therefore have impact on improve recovery ratio amplitude to a certain extent.
The content of the invention
The main object of the present invention is in view of the shortcomings of the prior art and provides a kind of method of microbe oil production, this method
The displacement efficiency of water-drive pool is improved by injecting biosurfactant first；Then by the adjustment of flooding pattern, expand
Swept volume of the endogenous microbes in oil reservoir；The original for displacing adjacent to oil well area is handled finally by microbial single well stimulation
Oil；So as to be finally reached the purpose for further improving oil recovery.
A kind of method of microbe oil production, it is characterised in that specifically include following steps, but be not limited to following steps：
1st, the biosurfactant displacement of reservoir oil
With high pressure pump truck by mass percentage concentration be 0.05%~0.08%, injection rate be 0.05PV~0.10PV biology
Surfactant injects oil reservoir, injection rate 30m from water injection well3/ d~50m3/d。
2nd, flooding pattern adjusts
20%~40% oil well closing well of target block oil well sum is chosen, the oil well selection of closing well is permeated from oil well
Rate is chosen from high to low；30%~50% oil well for choosing oil well sum improves Liquid output, and the amplitude that Liquid output improves is original
Beginning Liquid output 10%~50%, improving Liquid output oil well selection gist is chosen from low to high from oil well permeability.
3rd, the endogenous microbes displacement of reservoir oil
Activator soln is injected into oil reservoir from water injection well with high-pressure plunger pump, the injection rate of activator for 0.10PV~
0.20PV, injection rate 80m3/ d~120m3/ d, for injection mode to be continuously injected into, air injection rate is 1 × 105Nm3~2 ×
105Nm3, air injection rate is 50Nm3/ h~100Nm3/h。
4th, microbial single well stimulation recovers the oil
Endogenous microbes activator injection complete 6~12 months after, select step 2 in closing well oil well function of injecting bacterium and
Nutrients carries out single well stimulation oil recovery.
Wherein, described biosurfactant is rhamnolipid, sophorolipid, lipopeptid, soybean lecithin and algae protein sugar
One kind in fat.
The composition and component glucose 10g/L~15g/L, K of described activator2HPO4·3H2O 1g/L~2g/L, jade
Rice ＆ peanut milk dry powder 0.5g/L~0.8g/L, NaCl 0.2g/L~0.3g/L.
Described function bacterium is one kind in pseudomonad, bacillus subtilis, ground bacillus and acinetobacter calcoaceticus.
The composition and component of described nutrients are starch 5g/L~8g/L, peptone 1g/L~3g/L, K2HPO4·3H2O
1g/L~2g/L, NaNO30.2g/L~0.5g/L.
Described function bacterium and the injection rate of nutrients are every meter of core intersection 5m3~8m3。
Described function bacterium and the injection mode of nutrients are to be injected from the oil jacket annular space of oil well.
Described reservoir condition is 30 DEG C of 90 DEG C of ＜ reservoir temperatures ＜, reservoir pressure ＜ 15MPa, formation water salinity ＜
120000mg/L, in-place permeability ＞ 500 × 10-3μm2, ground viscosity of crude is less than 1000mPas.
The present invention in oil reservoir first by injecting biosurfactant, because biosurfactant has interface
The characteristics of power is low and displacement efficiency is high, accordingly, it is capable to further improve the recovery ratio of water-drive pool；It is meanwhile high by closing part
The mode of the oil well of permeability and the Liquid output of raising part low-permeability oil well adjusts flooding pattern, plugs oil reservoir indirectly
Macropore reaches the purpose of water plugging and profile controlling, so as to expand the swept volume of endogenous microbes, is metabolized and produced by endogenous microbes
Organic acid, biosurfactant and biogas and oil reservoir comprehensive function, and then further improve water-drive pool harvesting
Rate；Constantly dilute and consume in oil reservoir finally, due to inject biosurfactant and activator, actually reach oil deposit deep part
Especially the amount of the activator of adjacent to oil well area and biosurfactant is seldom or concentration is very low, and therefore, oil deposit deep part is outstanding
It is that the remaining oil of adjacent to oil well area compares enrichment, and the enrichment of displacement of reservoir oil adjacent to oil well area is handled by microbial single well stimulation
Crude oil, can largely improve well yield；The oil recovering of water-drive pool can be increased substantially by above aggregate measures
Rate and recovery percent of reserves.
The present invention has the following advantages that compared with prior art and beneficial effect：
(1) activator that uses of the present invention has source wide, cheap and the advantages of do not injure stratum；
(2) oil reservoir of the invention is applied widely, is particularly suitable for the medium to high permeable rate oil reservoir of waterflooding development；
(3) invention has technique simple, specific aim and workable；
(4) field test results are good, and field test improves recovery ratio and is more than 15.0%.
4th, embodiment
With reference to specific embodiment, the present invention is described further, but protection scope of the present invention is not limited in
This：
Embodiment 1：
Shengli Oil Field block L is high salinity, medium to high permeable rate, the loose sand oil accumulation of medium-high viscosity, buried depth
1253m~1327m, 53 DEG C, reservoir pressure 11.2MPa of reservoir temperature, porosity 32.5%, pore volume 2.8 × 104m3, infiltration
Rate 1200 × 10-3μm2, recoverable reserves 6.9 × 104T, formation water salinity 12350mg/L, 10 mouthfuls of oil well sum, oil well oozes
Saturating rate, Liquid output and core intersection statistics are shown in Table 1.
The block L oil wells permeability of table 1, Liquid output and core intersection statistical form
| Sequence number | Pound sign | Permeability, 10-3μm2 | Daily fluid production rate, m3 | Core intersection, m |
| 1 | L-1 | 1500 | 98 | 12.5 |
| 2 | L-2 | 1100 | 80 | 9.8 |
| 3 | L-3 | 950 | 72 | 15.6 |
| 4 | L-4 | 1200 | 95 | 13.3 |
| 5 | L-5 | 800 | 65 | 8.3 |
| 6 | L-6 | 1800 | 102 | 5.6 |
| 7 | L-7 | 1300 | 83 | 7.8 |
| 8 | L-8 | 2100 | 115 | 6.5 |
| 9 | L-9 | 750 | 60 | 14.6 |
| 10 | L-10 | 2500 | 120 | 9.2 |
Implementing specific implementation step of the invention in the block is：
(1) the biosurfactant displacement of reservoir oil
With high pressure pump truck by mass percentage concentration be 0.05%, injection rate be 0.05PV rhamnolipid from water injection well inject
Oil reservoir, injection rate 30m3/d。
(2) flooding pattern adjusts
Choose 20% total oil well of oil well totally 2 mouthfuls of oil well closing wells, the oil well difference L-10 and L-8 of closing well；Choose oil
40% oil well of well sum improves Liquid output, respectively L-9, L-5, L-3 and L-2 oil well, the amplitude that Liquid output improves for totally 4 mouthfuls
Respectively original Liquid output 50%, 40%, 30% and 10%, the oilwell produced fluid amount improved after Liquid output is respectively 90m3、91m3、
93.6m3And 88m3。
(3) the endogenous microbes displacement of reservoir oil
Will be by glucose, K with high-pressure plunger pump2HPO4·3H2O, Dried Corn Steep Liquor Powder and NaCl composition activator soln from
Water injection well injects oil reservoir, glucose, K2HPO4·3H2O, Dried Corn Steep Liquor Powder and NaCl mass concentrations be respectively 10g/L, 1.5g/L,
0.8g/L and 0.2g/L, the injection rate of activator is 0.20PV total 0.56 × 104m3, injection rate 80m3/ d, injection mode
To be continuously injected into, air injection rate is 1 × 105Nm3, air injection rate is 50Nm3/h。
(4) microbial single well stimulation recovers the oil
Endogenous microbes activator injection selects L-10 and L-8 oil well function of injecting bacterium and nutrients to enter after completing 6 months
Row single well stimulation recovers the oil, wherein the function bacterium injected is pseudomonad, the composition and component of nutrients are starch 5g/L, egg
White peptone 2g/L, K2HPO4·3H2O 2g/L、NaNO3The pseudomonad of 0.4g/L, L-10 and L-8 oil well and the injection of nutrients
Amount is respectively 46m3And 52m3, injection mode is to be injected from the oil jacket annular space of oil well.
Site test results：The field test term of validity added up to increase oil 1.23 × 10 more than 32 months4T, improve oil recovering
Rate 17.8%.
Embodiment 2：
Shengli Oil Field block M is high salinity, the water drive sandstone reservoirs of high permeability, buried depth 1528m~
1672m, 75 DEG C, reservoir pressure 13.5MPa of reservoir temperature, porosity 33.2%, pore volume 9.2 × 105m3, permeability 1500
×10-3μm2, recoverable reserves 7.5 × 105T, formation water salinity 14570mg/L, 12 mouthfuls of oil well sum, oil well permeability, production
Liquid measure and core intersection statistics are shown in Table 2.
The block M oil wells permeability of table 2, Liquid output and core intersection statistical form
Implementing specific implementation step of the invention in the block is：
(1) the biosurfactant displacement of reservoir oil
With high pressure pump truck by mass percentage concentration be 0.08%, injection rate be 0.08PV sophorolipid from water injection well inject oil
Hide, injection rate 40m3/d。
(2) flooding pattern adjusts
Choose 40% total oil well of oil well totally 5 mouthfuls of oil well closing wells, oil well difference M-7, M-10, M-3, M-8 of closing well
And M-2；50% oil well for choosing oil well sum improves Liquid output, respectively M-11, M-9, M-5, M-1, M-4 and M- for totally 6 mouthfuls
12 oil wells, the amplitude that Liquid output improves is respectively original Liquid output 50%, 40%, 30%, 25%, 20% and 10%, improves production
Oilwell produced fluid amount after liquid measure is respectively 144m3、109.2m3、97.5m3、103.8m3、122.4m3And 94.6m3。
(3) the endogenous microbes displacement of reservoir oil
Will be by glucose, K with high-pressure plunger pump2HPO4·3H2O, Dried Corn Steep Liquor Powder and NaCl composition activator soln from
Water injection well injects oil reservoir, glucose, K2HPO4·3H2O, Dried Corn Steep Liquor Powder and NaCl mass concentrations be respectively 15g/L, 1.0g/L,
0.5g/L and 0.25g/L, the injection rate of activator is 0.10PV total 0.92 × 105m3, injection rate 100m3/ d, injection side
For formula to be continuously injected into, air injection rate is 1.5 × 105Nm3, air injection rate is 80Nm3/h。
(4) microbial single well stimulation recovers the oil
Endogenous microbes activator injection selects M-7, M-10, M-3, M-8 and M-2 oil well function of injecting after completing 10 months
Bacterium and nutrients carry out single well stimulation oil recovery, wherein the function bacterium injected is ground bacillus, the composition and component of nutrients
It is starch 6g/L, peptone 3g/L, K2HPO4·3H2O 1g/L、NaNO30.2g/L, M-7, M-10, M-3, M-8 and M-2 oil
The injection rate of well ground bacillus and nutrients is respectively 58.4m3、59.4m3、64m3、95.9m3And 61.8m3, injection mode is
Injected from the oil jacket annular space of oil well.
Site test results：The field test term of validity added up to increase oil 1.4 × 10 more than 42 months5T, improve oil recovering
Rate 18.7%.
Embodiment 3：
Shengli Oil Field block P is medium salinity, the sandstone oil reservoir of high permeability, and buried depth 985m~1178m is oily
Hide 65 DEG C, reservoir pressure 9.0MPa of temperature, porosity 34.2%, pore volume 4.5 × 105m3, permeability 1800 × 10-3μm2,
Recoverable reserves 9.6 × 104T, formation water salinity 5630mg/L, oil well sum 8 mouthfuls, block P oil wells permeability, Liquid output and
Core intersection is shown in Table 3.
The block P oil wells permeability of table 3, Liquid output and core intersection statistical form
| Sequence number | Pound sign | Permeability, 10-3μm2 | Daily fluid production rate, m3 | Core intersection, m |
| 1 | P-1 | 3200 | 156 | 12.3 |
| 2 | P-2 | 1900 | 98 | 8.5 |
| 3 | P-3 | 1200 | 82 | 7.6 |
| 4 | P-4 | 1000 | 75 | 13.5 |
| 5 | P-5 | 2500 | 128 | 11.4 |
| 6 | P-6 | 2800 | 135 | 10.5 |
| 7 | P-7 | 1500 | 86 | 8.9 |
| 8 | P-8 | 2100 | 105 | 5.4 |
Implementing specific implementation step of the invention in the block is：
(1) the biosurfactant displacement of reservoir oil
With high pressure pump truck by mass percentage concentration be 0.06%, injection rate be 0.10PV lipopeptid from water injection well inject oil
Hide, injection rate 50m3/d。
(2) flooding pattern adjusts
Choose 30% total oil well of oil well totally 2 mouthfuls of oil well closing wells, the oil well difference P-1 and P-6 of closing well；Choose oil well
Totally 2 mouthfuls of raising Liquid outputs, respectively P-4 and P-3 oil wells, the amplitude that Liquid output improves are respectively original for 30% oil well of sum
Liquid output 50% and 40%, the oilwell produced fluid amount improved after Liquid output is respectively 112.5m3And 114.8m3。
(3) the endogenous microbes displacement of reservoir oil
Will be by glucose, K with high-pressure plunger pump2HPO4·3H2O, Dried Corn Steep Liquor Powder and NaCl composition activator soln from
Water injection well injects oil reservoir, glucose, K2HPO4·3H2O, Dried Corn Steep Liquor Powder and NaC mass concentrations be respectively 12g/L, 2.0g/L,
0.6g/L and 0.3g/L, the injection rate of activator is 0.15PV total 0.675 × 105m3, injection rate 120m3/ d, injection side
For formula to be continuously injected into, air injection rate is 2 × 105Nm3, air injection rate is 100Nm3/h。
(4) microbial single well stimulation recovers the oil
Endogenous microbes activator injection selects P-1 and P-6 oil well function of injecting bacterium and nutrients to enter after completing 12 months
Row single well stimulation recovers the oil, wherein the function bacterium injected is bacillus subtilis, the composition and component of nutrients are starch 8g/
L, peptone 1g/L, K2HPO4·3H2O 1.5g/L、NaNO30.5g/L, P-1 and P-6 oil well bacillus subtilis and nutrients
Injection rate be respectively 61.5m3And 84m3, injection mode is to be injected from the oil jacket annular space of oil well.
Site test results：The field test term of validity added up to increase 1.56 × 104t of oil, and improved oil recovering more than 35 months
Rate 16.3%.
Claims (7)
- A kind of 1. method of microbe oil production, it is characterised in that specifically include following steps, but be not limited to following steps：(1) the biosurfactant displacement of reservoir oilWith high pressure pump truck by mass percentage concentration be 0.05%~0.08%, injection rate be 0.05PV~0.10PV biological surface Activating agent injects oil reservoir, injection rate 30m from water injection well3/ d~50m3/d；(2) flooding pattern adjustsChoose 20%~40% oil well closing well of target block oil well sum, the oil well selection of closing well be from oil well permeability from High to Low selection；30%~50% oil well for choosing oil well sum improves Liquid output, and the amplitude that Liquid output improves is original production Liquid measure 10%~50%, improving Liquid output oil well selection gist is chosen from low to high from oil well permeability；(3) the endogenous microbes displacement of reservoir oilActivator is injected into oil reservoir from water injection well with high-pressure plunger pump, the injection rate of activator is 0.10PV~0.20PV, injection Speed is 80m3/ d~120m3/ d, for injection mode to be continuously injected into, air injection rate is 1 × 105Nm3~2 × 105Nm3, air Injection rate is 50Nm3/ h~100Nm3/h；(4) microbial single well stimulation recovers the oilAfter endogenous microbes activator injection is completed 6~12 months, the oil well function of injecting bacterium of closing well and battalion in step (2) are selected Support thing and carry out single well stimulation oil recovery.
- 2. the method for microbe oil production according to claim 1, it is characterised in that described biosurfactant is mouse One kind in Lee's glycolipid, sophorolipid, lipopeptid, soybean lecithin and algae albumen glycolipid.
- 3. the method for microbe oil production according to claim 1 or 2, it is characterised in that described activator composition and component For glucose 10g/L~15g/L, K2HPO4·3H2O 1g/L~2g/L, Dried Corn Steep Liquor Powder 0.5g/L~0.8g/L, NaCl 0.2g/L~0.3g/L.
- 4. the method for microbe oil production according to claim 1, it is characterised in that described function bacterium is pseudomonad, withered One kind in careless bacillus, ground bacillus and acinetobacter calcoaceticus.
- 5. the method for the microbe oil production according to claim 1 or 4, it is characterised in that the composition and group of described nutrients Part is starch 5g/L~8g/L, peptone 1g/L~3g/L, K2HPO4·3H2O 1g/L~2g/L, NaNO30.2g/L~ 0.5g/L。
- 6. the method for microbe oil production according to claim 5, it is characterised in that described function bacterium and the note of nutrients It is every meter of core intersection 5m to enter amount3~8m3。
- 7. the method for microbe oil production according to claim 6, it is characterised in that described function bacterium and the note of nutrients It is to be injected from the oil jacket annular space of oil well to enter mode.
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| CN107558969A (en) * | 2016-07-01 | 2018-01-09 | 中国石油化工股份有限公司 | A kind of method that endogenous microbes are recovered the oil |
| CN107558970B (en) * | 2016-07-01 | 2019-07-23 | 中国石油化工股份有限公司 | A method of improving endogenous microbes single well stimulation yield |
| CN107558972A (en) * | 2016-07-01 | 2018-01-09 | 中国石油化工股份有限公司 | A kind of method that microbial single well stimulation improves oil well output |
| CA3058761A1 (en) * | 2017-04-09 | 2018-10-18 | Locus Oil Ip Company, Llc | Microbial products and uses thereof to improve oil recovery |
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