CN107384352A - A kind of de-plugging agent and its application method - Google Patents
A kind of de-plugging agent and its application method Download PDFInfo
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- CN107384352A CN107384352A CN201710509942.6A CN201710509942A CN107384352A CN 107384352 A CN107384352 A CN 107384352A CN 201710509942 A CN201710509942 A CN 201710509942A CN 107384352 A CN107384352 A CN 107384352A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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Abstract
The invention belongs to oil well auxiliary agent technical field, and in particular to a kind of de-plugging agent and its application method.The de-plugging agent includes A, two components of B, wherein, component A includes surfactant, organic acid, corrosion inhibiter, dispersant, bleeding agent and ATMP, B component is mixed by bacterium solution and attapulgite dispersion liquid, during use, component A is first injected into pit shaft, then inject water into oil well, again by behind the de-plugging agent solution press-in stratum in pit shaft, 5~10h of closing well, inject B component in the same fashion again, de-plugging can be completed after 8~10h of closing well, de-plugging agent produced by the present invention has plugging removal effect good, the advantages of increasing yield and injection long action time, it is harmless to stratum and environment after de-plugging agent use of the present invention simultaneously, it is a kind of environment-friendly type de-plugging of well product.
Description
Technical field
The invention belongs to oil well auxiliary agent technical field, and in particular to a kind of de-plugging agent and its application method.
Background technology
In oilfield development process, especially in heavy oil wells recovery process, blocking is one with serious problems all the time.One
As for, under stable geology reservoir, colloidal oil system is in thermodynamic equilibrium state.Due to development process medium temperature
Degree, pressure, incompatibility of water filling and outside fluid etc. influence, and cause crude oil composition to change, and destroy crude oil system balance
State, cause asphalitine to flocculate, deposit from crude oil, and then block oil reservoir, nearly well band, pit shaft, gathering line, process container
Deng, or even cause oil well to stop production or scrap, influence the development effectiveness and economic benefit in oil field.
At present, people's generally use de-plugging agent to be to reduce the blocking of injection well, existing de-plugging agent be typically with hydrochloric acid and
Hydrofluoric acid（Abbreviation mud acid）For host, then add various auxiliary agents, be configured to self-generating mud-acid, micella acid, buffer regulated HF acid, MH acid,
Ten several prescriptions such as Strong oxdiative acid, foamed acid, emulsified acid, phosphoric acid, mud acid prescription play indispensable in breaking block treatment is acidified
Effect, plugging removal effect is also more significant.But over time, the effect of strong acid in mud acid, caused by environmental pollution and
Grievous hurt to formation skeleton, and be used for multiple times increasing yield and injection positive effect decline negative interaction, cause extensively dispute and
The great attention of people, therefore, seek the environment-friendly type de-plugging of a kind of good plugging removal effect, fanout free region, increasing yield and injection long action time
Agent, turn into and improve the problem of oilfield exploitation effect is in the urgent need to address.
The content of the invention
Present invention mainly solves technical problem：There is strong acid effect for existing de-plugging agent, long-term use can cause ring
Border is polluted and the grievous hurt to formation skeleton, and increasing yield and injection, the problem of action time is short, there is provided a kind of de-plugging agent and its
Application method.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of de-plugging agent, including component A and B component；
Described component A is：Count in parts by weight, including 20~25 parts of surfactants, 5~10 parts of organic acids, 1~5 part it is slow
Lose agent, 5~10 parts of dispersants, 3~8 parts of bleeding agents, 1~3 part of ATMP；
Described B component is：In mass ratio 5:1, bacterium solution and attapulgite dispersion liquid are mixed；
The specific preparation process of the bacterium solution is：
（1）Count in parts by weight, take 5~10 parts of sodium chloride, 0.1~0.3 part of ammonium chloride, 0.2~0.4 part of potassium dihydrogen phosphate, 0.3
~0.5 part of dipotassium hydrogen phosphate, 0.1~0.3 part of magnesium sulfate, 0.01~0.03 part of calcium chloride, 0.01~0.03 part of iron chloride and 800
~1000 parts of deionized waters, culture medium 1 is obtained after being stirred；
（2）The asphalt of 1 mass of culture medium 0.3~0.5% is added into culture medium 1, is sterilized after being stirred, obtains culture medium 2；
（3）Count in parts by weight, take 4~6 portions of beef extracts, 10~15 parts of peptones, 4~6 parts of sodium chloride, 10~30 parts of fine jades respectively
Fat and 800~1000 parts of deionized waters, sterilize after being stirred, obtain culture medium 3；
（4）The soil-well jam thing of 3 mass of culture medium 2~3% and the saccharomycete of 3 mass of culture medium 0.1~0.3% are added into culture medium 3
Powder, at 30~37 DEG C after being stirred, cultivate under the conditions of 120~140r/min, filtered after culture, obtain filtrate；
（5）By inoculum concentration 3~5%, filtrate is inoculated into culture medium 2, after regulation pH is 7.4~7.6, at 30~37 DEG C, 120
Cultivated under the conditions of~140r/min, bacterium solution is obtained after culture.
The preparation method of described attapulgite dispersion liquid is：In mass ratio 1:20, attapulgite is added into deionized water
In, after 5~10min of ultrasonic disperse, obtain attapulgite dispersion liquid.
Described surfactant is one in lauryl sodium sulfate, alkyl-glucoside, AEO
Kind is a variety of.
Described organic acid is two or more in citric acid, oxalic acid, acetic acid, malic acid and tartaric acid.
Described corrosion inhibiter is thiocarbamide, phosphoric acid hydrogen two is received and the one or more in potassium fluoride.
Described dispersant is the one or more in ethylene glycol monobutyl ether, ethylene glycol ethyl ether and polyvinylpyrrolidone.
Described bleeding agent is the one or more in sodium alkyl sulfonate, α-sodium olefin sulfonate and sulfamic acid sodium.
A kind of application method of de-plugging agent, specific method are：Component A is first injected into pit shaft, then by 1~3 times of oil well well
The water of cylinder volume is injected into oil well, behind the de-plugging agent solution press-in stratum in pit shaft, 5~10h of closing well, then in the same fashion
B component is injected, de-plugging can be completed after 8~10h of closing well.
The beneficial effects of the invention are as follows：
（1）The de-plugging agent that the present invention is prepared, has an A, the components of B two, wherein in component A containing surfactant, organic acid,
The materials such as bleeding agent, can expand the porosity of tamper, and reduce tamper surface tension, make molten wax viscosity reduction, can incite somebody to action
The Water-In-Oil State Transferring that formation crude begins into oil-in-water shape, so as to by perforated interval and the wax of near wellbore zone absorption, colloid,
Organic species tamper such as asphalitine strips down, and is advantageous to tamper discharging stratum with stratum water；（2）It is prepared by the present invention
Obtained de-plugging agent, there is A, the components of B two, the bacterium solution that wherein B component culture obtains, strain therein can be by the material in oil
Eaten, and be supported in attapulgite as carbon source, the stability and activity of bacterium solution can be improved, after component A uses
Use is added, the purpose is to further release blocking, and can avoids pollution and grievous hurt of the mud acid to stratum and environment, together
When it also avoid residual acid residue and return the halfway phenomenon of row.
Embodiment
Count in parts by weight, take respectively 20~25 parts of surfactants, 5~10 parts of organic acids, 1~5 part of corrosion inhibiter, 5~
10 parts of dispersants, 3~8 parts of bleeding agents and 1~3 part of ATMP, component A is obtained after mixing, counts in parts by weight, takes 5
~10 parts of sodium chloride, 0.1~0.3 part of ammonium chloride, 0.2~0.4 part of potassium dihydrogen phosphate, 0.3~0.5 part of dipotassium hydrogen phosphate, 0.1~
0.3 part of magnesium sulfate, 0.01~0.03 part of calcium chloride, 0.01~0.03 part of iron chloride and 800~1000 parts of deionized waters, stirring are mixed
Culture medium 1 is obtained after conjunction, the asphalt of 1 mass of culture medium 0.3~0.5% is added into culture medium 1, in 121 DEG C of temperature after being stirred
Degree 15~20min of lower sterilizing, obtains culture medium 2, counts in parts by weight, take 4~6 portions of beef extracts, 10~15 parts of peptones, 4 respectively
~6 parts of sodium chloride, 10~30 parts of agar and 800~1000 parts of deionized waters, after being stirred at a temperature of 121 DEG C sterilization treatment
15~20min, culture medium 3 is obtained after sterilizing, the soil-well jam thing of 3 mass of culture medium 2~3% and culture medium 3 are added into culture medium 3
The yeast bacterium powder of quality 0.1~0.3%, at 30~37 DEG C after being stirred, cultivate 3~4 days, cultivate under the conditions of 120~140r/min
After filter, obtain filtrate, by inoculum concentration 3~5%, filtrate be inoculated into culture medium 2, regulation pH be 7.4~7.6 after, 30~37
DEG C, under the conditions of 120~140r/min cultivate 60~70h, after culture bacterium solution, in mass ratio 1:20, attapulgite is added and gone
In ionized water, 5~10min of ultrasonic disperse, disperse after attapulgite dispersion liquid, in mass ratio 5:1, by bacterium solution and attapulgite
Dispersion liquid mixes to obtain component B.In use, component A first is injected into pit shaft, then the water of 1~3 times of well wellbore volume is injected into
In oil well, behind the de-plugging agent solution press-in stratum in pit shaft, 5~10h of closing well, then B component is injected in the same fashion, closing well 8
De-plugging can be completed after~10h.Described surfactant is lauryl sodium sulfate, alkyl-glucoside, fatty alcohol polyoxy
One or more in vinethene.Described organic acid be citric acid, oxalic acid, acetic acid, malic acid and tartaric acid in two kinds or
It is a variety of.Described corrosion inhibiter is thiocarbamide, phosphoric acid hydrogen two is received, the one or more in potassium fluoride.Described dispersant is ethylene glycol
One or more in monobutyl ether, ethylene glycol ethyl ether and polyvinylpyrrolidone.Described bleeding agent is sodium alkyl sulfonate, α-alkene
One or more in base sodium sulfonate and sulfamic acid sodium.
Example 1
Count in parts by weight, take 20 parts of lauryl sodium sulfate, 3 parts of citric acids, 2 parts of oxalic acid, 1 part of thiocarbamide, 5 parts of ethylene glycol respectively
Monobutyl ether, 3 parts of sodium alkyl sulfonates and 1 part of ATMP, component A is obtained after mixing, counts in parts by weight, takes 5 parts of chlorinations
Sodium, 0.1 part of ammonium chloride, 0.2 part of potassium dihydrogen phosphate, 0.3 part of dipotassium hydrogen phosphate, 0.1 part of magnesium sulfate, 0.01 part of calcium chloride, 0.01
Part iron chloride and 800 parts of deionized waters, culture medium 1 is obtained after being stirred, the stone of 1 mass of culture medium 0.3% is added into culture medium 1
Oil asphalt, sterilize 15min after being stirred at a temperature of 121 DEG C, obtains culture medium 2, counts in parts by weight, takes 4 parts of beef respectively
Cream, 10 parts of peptones, 4 parts of sodium chloride, 10 parts of agar and 800 parts of deionized waters, at a temperature of 121 DEG C at sterilizing after being stirred
15min is managed, culture medium 3 is obtained after sterilizing, the soil-well jam thing of 3 mass of culture medium 2% and the mass of culture medium 3 are added into culture medium 3
0.1% yeast bacterium powder, at 30 DEG C after being stirred, cultivated 3 days under the conditions of 120r/min, filtered after culture, obtain filtrate, by inoculation
Amount 3%, filtrate is inoculated into culture medium 2, after regulation pH is 7.4, at 30 DEG C, 60h is cultivated under the conditions of 120r/min, after culture
Bacterium solution, in mass ratio 1:20, attapulgite is added in deionized water, ultrasonic disperse 5min, attapulgite point is obtained after disperseing
Dispersion liquid, in mass ratio 5:1, bacterium solution and attapulgite dispersion liquid are mixed into obtain component B.In use, component A is first injected into pit shaft,
Then the water of 1 times of well wellbore volume is injected into oil well, behind the de-plugging agent solution press-in stratum in pit shaft, closing well 5h,
Inject B component in the same fashion again, de-plugging can be completed after closing well 8h.
Example 2
Count in parts by weight, take 23 parts of alkyl-glucosides, 3 parts of citric acids, 2 parts of oxalic acid, 3 parts of acetic acid, 3 parts of phosphoric acid hydrogen two respectively
Receive, 8 parts of ethylene glycol ethyl ethers, 5 parts of α-sodium olefin sulfonates and 2 parts of ATMPs, after mixing component A, in parts by weight
Meter, take 8 parts of sodium chloride, 0.2 part of ammonium chloride, 0.3 part of potassium dihydrogen phosphate, 0.4 part of dipotassium hydrogen phosphate, 0.2 part of magnesium sulfate, 0.02 part
Calcium chloride, 0.02 part of iron chloride and 900 parts of deionized waters, culture medium 1 is obtained after being stirred, culture medium 1 is added into culture medium 1
The asphalt of quality 0.4%, sterilize 18min after being stirred at a temperature of 121 DEG C, obtains culture medium 2, counts in parts by weight, respectively
5 portions of beef extracts, 13 parts of peptones, 5 parts of sodium chloride, 20 parts of agar and 900 parts of deionized waters are taken, in 121 DEG C of temperature after being stirred
The lower sterilization treatment 18min of degree, obtains culture medium 3, the soil-well jam thing of 3 mass of culture medium 2% and training is added into culture medium 3 after sterilizing
The yeast bacterium powder of 3 mass of base 0.2% is supported, at 34 DEG C after being stirred, is cultivated 3 days under the conditions of 130r/min, filters, must filter after culture
Liquid, by inoculum concentration 4%, filtrate is inoculated into culture medium 2, after regulation pH is 7.5, at 33 DEG C, cultivated under the conditions of 130r/min
65h, after culture bacterium solution, in mass ratio 1:20, attapulgite is added in deionized water, ultrasonic disperse 8min, after disperseing
Attapulgite dispersion liquid, in mass ratio 5:1, bacterium solution and attapulgite dispersion liquid are mixed into obtain component B.In use, first by component A
Pit shaft is injected, then the water of 2 times of well wellbore volumes is injected into oil well, the de-plugging agent solution in pit shaft is pressed into stratum
Afterwards, closing well 8h, then B component is injected in the same fashion, de-plugging can be completed after closing well 9h.
Example 3
Count in parts by weight, take 25 parts of AEOs, 3 parts of acetic acid, 3 parts of malic acid, 4 parts of tartaric acid, 5 parts of fluorine respectively
Change potassium, 10 parts of polyvinylpyrrolidones, 8 parts of sulfamic acid sodium and 3 parts of ATMPs, component A is obtained after mixing, by weight
Number meter, take 10 parts of sodium chloride, 0.3 part of ammonium chloride, 0.4 part of potassium dihydrogen phosphate, 0.5 part of dipotassium hydrogen phosphate, 0.3 part of magnesium sulfate,
0.03 part of calcium chloride, 0.03 part of iron chloride and 1000 parts of deionized waters, culture medium 1 is obtained after being stirred, is added into culture medium 1
The asphalt of 1 mass of culture medium 0.5%, sterilize 20min after being stirred at a temperature of 121 DEG C, obtains culture medium 2, in parts by weight
Meter, take 6 portions of beef extracts, 15 parts of peptones, 6 parts of sodium chloride, 30 parts of agar and 1000 parts of deionized waters respectively, after being stirred
Sterilization treatment 20min at a temperature of 121 DEG C, culture medium 3 is obtained after sterilizing, the soil-well jam of 3 mass of culture medium 3% is added into culture medium 3
Thing and the yeast bacterium powder of 3 mass of culture medium 0.3%, at 37 DEG C after being stirred, cultivated 4 days under the conditions of 140r/min, mistake after culture
Filter, obtains filtrate, by inoculum concentration 5%, filtrate is inoculated into culture medium 2, after regulation pH is 7.6, at 37 DEG C, and 140r/min conditions
Lower culture 70h, after culture bacterium solution, in mass ratio 1:20, attapulgite is added in deionized water, ultrasonic disperse 10min, point
Dissipate after attapulgite dispersion liquid, in mass ratio 5:1, bacterium solution and attapulgite dispersion liquid are mixed into obtain component B.In use, first
Component A is injected into pit shaft, then the water of 3 times of well wellbore volumes is injected into oil well, by the de-plugging agent solution pressure in pit shaft
After entering stratum, closing well 10h, then B component is injected in the same fashion, de-plugging can be completed after closing well 10h.
Comparative example：The oilfield blocking remover of Tianjin Environmental Protection Technology Co., Ltd production.
The oilfield blocking remover performance of de-plugging agent made from present example 1~3 and comparative example is detected, it is examined
It is as shown in table 1 to survey result：
Table 1
In summary, de-plugging agent produced by the present invention has the advantages of good plugging removal effect, increasing yield and injection long action time, while this
It is harmless to stratum and environment after invention de-plugging agent use, it is a kind of environment-friendly type de-plugging of well product.
Claims (8)
- A kind of 1. de-plugging agent, it is characterised in that：Including component A and B component；Described component A is：Count in parts by weight, including 20~25 parts of surfactants, 5~10 parts of organic acids, 1~5 part it is slow Lose agent, 5~10 parts of dispersants, 3~8 parts of bleeding agents, 1~3 part of ATMP；Described B component is：In mass ratio 5:1, bacterium solution and attapulgite dispersion liquid are mixed；It is characterized in that：The specific preparation process of the bacterium solution is：Count in parts by weight, take 5~10 parts of sodium chloride, 0.1~0.3 part of ammonium chloride, 0.2~0.4 part of potassium dihydrogen phosphate, 0.3~ 0.5 part of dipotassium hydrogen phosphate, 0.1~0.3 part of magnesium sulfate, 0.01~0.03 part of calcium chloride, 0.01~0.03 part of iron chloride and 800~ 1000 parts of deionized waters, culture medium 1 is obtained after being stirred；The asphalt of 1 mass of culture medium 0.3~0.5% is added into culture medium 1, is sterilized after being stirred, obtains culture medium 2；Count in parts by weight, take 4~6 portions of beef extracts, 10~15 parts of peptones, 4~6 parts of sodium chloride, 10~30 parts of agar respectively With 800~1000 parts of deionized waters, sterilized after being stirred, obtain culture medium 3；The soil-well jam thing of 3 mass of culture medium 2~3% and the yeast bacterium powder of 3 mass of culture medium 0.1~0.3% are added into culture medium 3, At 30~37 DEG C after being stirred, cultivate under the conditions of 120~140r/min, filtered after culture, obtain filtrate；It is 3~5% by inoculum concentration, filtrate is inoculated into culture medium 2, after regulation pH is 7.4~7.6, at 30~37 DEG C, 120~ Cultivated under the conditions of 140r/min, bacterium solution is obtained after culture.
- A kind of 2. de-plugging agent according to claim 1, it is characterised in that the preparation method of described attapulgite dispersion liquid For：In mass ratio 1:20, attapulgite is added in deionized water, after 5~10min of ultrasonic disperse, obtains attapulgite dispersion liquid.
- 3. a kind of de-plugging agent according to claim 1, it is characterised in that described surfactant is dodecyl sulphate One or more in sodium, alkyl-glucoside, AEO.
- 4. a kind of de-plugging agent according to claim 1, it is characterised in that described organic acid is citric acid, oxalic acid, vinegar Two or more in acid, malic acid and tartaric acid.
- 5. a kind of de-plugging agent according to claim 1, it is characterised in that described corrosion inhibiter is thiocarbamide, phosphoric acid hydrogen two is received With the one or more in potassium fluoride.
- 6. a kind of de-plugging agent according to claim 1, it is characterised in that described dispersant is ethylene glycol monobutyl ether, second One or more in glycol ether and polyvinylpyrrolidone.
- 7. a kind of de-plugging agent according to claim 1, it is characterised in that described bleeding agent is sodium alkyl sulfonate, α-alkene One or more in base sodium sulfonate and sulfamic acid sodium.
- A kind of 8. de-plugging agent described in claim 1~7, it is characterised in that：The application method of described de-plugging agent is：First will Component A injects pit shaft, then the water of 1~3 times of well wellbore volume is injected into oil well, by the de-plugging agent solution pressure in pit shaft After entering stratum, 5~10h of closing well, then B component is injected in the same fashion, de-plugging can be completed after 8~10h of closing well.
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| CN111073617A (en) * | 2019-11-28 | 2020-04-28 | 中国海洋石油集团有限公司 | Self-emulsifying blockage removing liquid and preparation method thereof |
| CN111363531A (en) * | 2020-03-12 | 2020-07-03 | 中国石油天然气股份有限公司 | Blocking remover and preparation method and application thereof |
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