CN103497743A - Artificial oil-based drilling fluid strong inhibitor for drilling fluid and preparation method of inhibitor - Google Patents
Artificial oil-based drilling fluid strong inhibitor for drilling fluid and preparation method of inhibitor Download PDFInfo
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- CN103497743A CN103497743A CN201310427447.2A CN201310427447A CN103497743A CN 103497743 A CN103497743 A CN 103497743A CN 201310427447 A CN201310427447 A CN 201310427447A CN 103497743 A CN103497743 A CN 103497743A
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- drilling fluid
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- oil base
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- aldehydes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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Abstract
The invention relates to the technical field of drilling fluid inhibitors and preparation thereof, and discloses an artificial oil-based drilling fluid strong inhibitor for drilling fluid and a preparation method of the inhibitor. The artificial oil-based drilling fluid strong inhibitor for the drilling fluid is composed of the following raw materials in parts by weight: 20-30 parts of starch, 30-38 parts of aldehydes, 5-10 parts of guaiacol sulfonic acid potassium, 1-5 parts of acid initiator and 25-35 parts of water. In comparison with the domestic frequently-used inhibitor for the drilling fluid, the artificial oil-based drilling fluid strong inhibitor for the drilling fluid has stronger inhibition effect; the starch used as a raw material in the inhibitor has wide source and cheap price, thus, production cost is lowered; the artificial oil-based drilling fluid strong inhibitor for the drilling fluid is nontoxic and easily biodegradable, and cannot pollute the environment; the artificial oil-based drilling fluid strong inhibitor for the drilling fluid is free of useless negative ions or negative ion groups, or the negative ions or negative ion groups with adverse side effects, and cannot cause damage to the drilling fluid or other well drilling works.
Description
Technical field
the present invention relates to inhibitor and preparing technical field thereof for drilling fluid, is imitative oil base drilling fluid potent inhibitor and preparation method thereof for a kind of drilling fluid.
Background technology
along with the increase day by day of countries in the world oil gas consumption, and the successively decreasing of whole world oil and gas reserves.Petroleum drilling exploitation work is shifted to deep oil reservoir, highly difficult reservoir by shallow table oil and gas reservoir exploitation gradually, bores and meets the rising of bad ground situation straight line, and difficulty of construction increases gradually, and wellbore construction cost amplification is larger.Mud shale well section hole instability remains the countries in the world drilling technology and fails the difficult problem thoroughly solved.If can not well solve mud shale well section borehole instability problems, just probably cause down-hole accident frequently to occur, the drilling operation comprehensive cost is very high, claim for eot, the infringement hydrocarbon zone, even cause engineering to scrap.In wellbore construction, bore while meeting the water sensitivity mud shale stratum, due to the clay mineral that contains montmorillonite, illite or illite/smectite mixed layer in this class stratum, can be under the leak-off liquid hydration of drilling fluid, expand, broken, peel off the loose physics and chemistry effect such as collapse, cause the complexcase such as hole shrinkage, slump in, cause bit freezing, suppress the Lou generation of the serious accident such as stratum, had a strong impact on drilling speed.Increase substantially drilling cost, damaged hydrocarbon zone.At present, both at home and abroad to strong water-sensitive area, class methods are to adopt oil base drilling fluid to carry out operation, but that oil base drilling fluid has a cost is high, and environmental pollution is serious, and shaft mouth operation is difficult to safely control.Another kind of method be take single inorganic salt or organic salt as suppressing core, uses this kind of drilling fluid by a large amount of rig-site utilization, has showed certain inhibition ability, can solve to a certain extent the problem of water sensitivity mud shale well section hole instability.But also have many defects, be mainly manifested in: in (1) drilling fluid when adding the inhibition metal ion, the unavoidable Cl that added
-
, CH
3
cOO
-
negatively charged ion or anion radical Deng macromolecule.These negatively charged ion or anion radical do not have positive contribution to whole drilling fluid system performance.Not only taken a large amount of chemical spaces, cause the quality that in unit volume, drilling fluid contains useless material to strengthen, and some negatively charged ion has been as Cl
-
, for logging operation, negative impact is arranged.(2) single inorganic salt or organic salt, its restraining effect in drilling fluid is compressed the clay particle surface electrostatic double layer by positively charged ion and is realized.Yet, owing to inevitably containing a large amount of negatively charged ion in single inorganic salt or organic salt, when increasing salinity, real useful positively charged ion does not increase, restraining effect to drilling fluid does not strengthen yet, and causes on the contrary drilling fluid rheology and building capacity to degenerate.In order to adjust property of drilling fluid, add again a large amount for the treatment of agents, increased drilling fluid cost.
Summary of the invention
the invention provides imitative oil base drilling fluid potent inhibitor and preparation method thereof for a kind of drilling fluid, overcome the deficiency of above-mentioned prior art, it can effectively solve, and the oil base drilling fluid cost is high, environmental pollution serious and shaft mouth operation is difficult to safely control; Single inorganic salt or organic salt are for the drilling fluid inhibition that suppresses core is poor and the high problem of cost.
one of technical scheme of the present invention realizes by following measures: imitative oil base drilling fluid potent inhibitor for a kind of drilling fluid, raw materials by weight portion consists of 20 parts to 30 parts of starch, 30 parts to 38 parts of aldehydes, 5 parts to 10 parts of thiocols, 1 part to 5 parts of acidic initiator, 25 parts to 35 parts, water.
below the further optimization and/or improvements to one of foregoing invention technical scheme:
above-mentioned drilling fluid obtains as follows with imitative oil base drilling fluid potent inhibitor, the starch of aequum, aldehydes, thiocol and water are added in reactor and is mixed, regulating pH with alkalinity regulator is 6 to 8.5, then add the acidic initiator of aequum and be mixed, reacting by heating still to the temperature of charge in reactor is 60 ℃ to 100 ℃, and back flow reaction obtains imitative oil base drilling fluid potent inhibitor for drilling fluid in 16 hours to 24 hours.
above-mentioned aldehydes is formaldehyde; Perhaps aldehydes is acetaldehyde; The mixture that perhaps aldehydes is formaldehyde and acetaldehyde.
above-mentioned formaldehyde is technical grade formaldehyde; Acetaldehyde is technical grade acetaldehyde.
above-mentioned acidic initiator is more than one mixtures in sodium pyrosulfate, boron trifluoride diethyl etherate network, S-WAT, sodium bisulfite, tosic acid; Or/and it is 10 minutes to 30 minutes that the temperature of charge in reactor is raised to heat-up time of 60 ℃ to 100 ℃.
two of technical scheme of the present invention realizes by following measures: the preparation method of imitative oil base drilling fluid potent inhibitor for a kind of drilling fluid, by following, undertaken, the starch of aequum, aldehydes, thiocol and water are added in reactor and is mixed, regulating pH with alkalinity regulator is 6 to 8.5, then add the acidic initiator of aequum and be mixed, reacting by heating still to the temperature of charge in reactor is 60 ℃ to 100 ℃, and back flow reaction obtains imitative oil base drilling fluid potent inhibitor for drilling fluid in 16 hours to 24 hours.
below two the further optimization and/or improvements to the foregoing invention technical scheme:
above-mentioned aldehydes is formaldehyde; Perhaps aldehydes is acetaldehyde; The mixture that perhaps aldehydes is formaldehyde and acetaldehyde.
above-mentioned formaldehyde is technical grade formaldehyde; Acetaldehyde is technical grade acetaldehyde.
above-mentioned acidic initiator is more than one mixtures in sodium pyrosulfate, boron trifluoride diethyl etherate network, S-WAT, sodium bisulfite, tosic acid; Or/and it is 10 minutes to 30 minutes that the temperature of charge in reactor is raised to heat-up time of 60 ℃ to 100 ℃.
drilling fluid of the present invention has very strong inhibition with the imitative more domestic common drilling fluid of oil base drilling fluid potent inhibitor with inhibitor; Raw starch source of the present invention is wide, low price, thus reduced production cost; The drilling fluid that the present invention obtains is nontoxic and readily biodegradable with imitative oil base drilling fluid potent inhibitor, can be to environment; Drilling fluid of the present invention, can not cause damage to drilling fluid or other drilling operations containing useless or negatively charged ion or the anionic group of adverse side effect are arranged with imitative oil base drilling fluid potent inhibitor.
Embodiment
the present invention is not subject to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and practical situation.
embodiment 1, imitative oil base drilling fluid potent inhibitor for this drilling fluid, and raw materials by weight portion consists of 20 parts to 30 parts of starch, 30 parts to 38 parts of aldehydes, 5 parts to 10 parts of thiocols, 1 part to 5 parts of acidic initiator, 25 parts to 35 parts, water.
embodiment 2, imitative oil base drilling fluid potent inhibitor for this drilling fluid, and raw materials by weight portion consists of 1 part of 5 parts of 30 parts of 20 parts of starch or 30 parts, aldehydes or 38 parts, thiocols or 10 parts, acidic initiator or 5 parts, 25 parts or 35 parts, water.
embodiment 3, this drilling fluid obtains by following preparation method with imitative oil base drilling fluid potent inhibitor, the starch of aequum, aldehydes, thiocol and water are added in reactor and is mixed, regulating pH with alkalinity regulator is 6 to 8.5, then add the acidic initiator of aequum and be mixed, reacting by heating still to the temperature of charge in reactor is 60 ℃ to 100 ℃, and back flow reaction obtains imitative oil base drilling fluid potent inhibitor for drilling fluid in 16 hours to 24 hours.Drilling fluid of the present invention is colloid with imitative oil base drilling fluid potent inhibitor, also drilling fluid of the present invention further can be processed and is obtained paste with imitative oil base drilling fluid potent inhibitor; Perhaps drilling fluid of the present invention is obtained to the pulvis that the quality single-detector is less than 10% by imitative oil base drilling fluid potent inhibitor drying treatment; Transportation is preserved conveniently, is convenient to pulvis.
embodiment 4, and as the optimization of above-described embodiment, in embodiment 4, aldehydes is formaldehyde; Perhaps aldehydes is acetaldehyde; The mixture that perhaps aldehydes is formaldehyde and acetaldehyde.
embodiment 5, and as the optimization of above-described embodiment, in embodiment 5, formaldehyde is technical grade formaldehyde; Acetaldehyde is technical grade acetaldehyde.
embodiment 6, and as the optimization of above-described embodiment, in embodiment 6, acidic initiator is more than one mixtures in sodium pyrosulfate, boron trifluoride diethyl etherate network, S-WAT, sodium bisulfite, tosic acid; Or/and it is 10 minutes to 30 minutes that the temperature of charge in reactor is raised to heat-up time of 60 ℃ to 100 ℃.
below that the drilling fluid that the above embodiment of the present invention is obtained is commonly used the simultaneous test of inhibitor with imitative oil base drilling fluid potent inhibitor and domestic drilling fluid:
simultaneous test one (laboratory stage)
imitative oil base drilling fluid potent inhibitor for the drilling fluid that the above embodiment of the present invention is obtained, KCl and polysalt three parts of mass percent concentrations that are configured to equal volume soluble in water respectively are respectively imitative oil base drilling fluid potent inhibitor solution for 15% drilling fluid, KCl solution and polysalt solution, add respectively 6 order to 10 purpose In Xiazijie Region, xinjiang slope soil particle 50.1 g in three parts of solution, 50.1 g and 50.2g, then place it in respectively under 120 ℃, heat is rolled 16 hours, after cooling rear use 40 eye mesh screens are rinsed well, put into baking oven, at 100 ℃, dry to constant weight, calculating the average rolling rate of recovery is shown in Table 1.
as can be seen from Table 1, the landwaste rate of recovery of polysalt solution, the landwaste rate of recovery of KCl solution and the drilling fluid that the above embodiment of the present invention obtains are respectively 65.96%, 53.23% and 76.61% by the landwaste rate of recovery of imitative oil base drilling fluid potent inhibitor solution, illustrate that the drilling fluid that the above embodiment of the present invention obtains improves a lot than the inhibition of polysalt and KCl with imitative oil base drilling fluid potent inhibitor, has very strong inhibition.
simultaneous test two (locale simulation experiment)
the configuration of base slurry: respectively by slope soil, Na
2
cO
3
, KOH, PHMA-2, JT-888 and CMC be dissolved in water and be configured to the base slurry, slope soil, Na
2
cO
3
, KOH, PHMA-2, JT-888 and the quality percentage composition of CMC in the base slurry be respectively 4%, 0.2%, 0.2%, 0.2%, 0.5% and 0.2%; The average behaviour parameter of base slurry is as shown in table 2; The base that configures slurry is divided into to three parts, in first part of base slurry, adds KCl, the quality percentage composition of KCl in first part of base slurry is 7%, adds the average behaviour parameter of base slurry of KCl as shown in table 3; The imitative oil base drilling fluid potent inhibitor for drilling fluid that adds the above embodiment of the present invention to obtain in second part of base slurry, with imitative oil base drilling fluid potent inhibitor, the quality percentage composition in second part of base slurry is 15% to the drilling fluid that the above embodiment of the present invention obtains, and the drilling fluid that adds the above embodiment of the present invention to obtain is as shown in table 4 by the average behaviour parameter of the base slurry of imitative oil base drilling fluid potent inhibitor; Add polysalt in the 3rd part of base slurry, the quality percentage composition of polysalt in the 3rd part of base slurry is 15%, adds the average behaviour parameter of base slurry of polysalt as shown in table 5.
from table 2 to table 5, can find out, base slurry, add KCl in the base slurry, the drilling fluid that adds the above embodiment of the present invention to obtain in the base slurry adds the average recovery rate of polysalt to be respectively 56.88%, 67.58%, 92.4% and 90.2% with imitative oil base drilling fluid potent inhibitor with in the base slurry; The drilling fluid that explanation adds the above embodiment of the present invention to obtain in the base slurry adds the inhibition of KCl to improve a lot with imitative oil base drilling fluid potent inhibitor than the base slurry with in the base slurry, has very strong inhibition; Base slurry, add KCl in the base slurry, the drilling fluid that adds the above embodiment of the present invention to obtain in the base slurry adds the average dehydration of polysalt to be respectively 5.8 ml, 6.2 ml, 4.4 ml and 4.6 ml with imitative oil base drilling fluid potent inhibitor with in the base slurry; The drilling fluid that explanation adds the above embodiment of the present invention to obtain in base slurry adds KCl and in the base slurry, adds the dehydration of polysalt that the reduction of different amplitudes is arranged than the base slurry, in the base slurry with imitative oil base drilling fluid potent inhibitor, the drilling fluid that the above embodiment of the present invention obtains can effectively reduce the filter loss of drilling fluid with imitative oil base drilling fluid potent inhibitor.
simultaneously, Raw starch source of the present invention is wide, low price, thus reduced production cost; The drilling fluid that the present invention obtains is nontoxic and readily biodegradable with imitative oil base drilling fluid potent inhibitor, can be to environment; Drilling fluid of the present invention, can not cause damage to drilling fluid or other drilling operations containing useless or negatively charged ion or the anionic group of adverse side effect are arranged with imitative oil base drilling fluid potent inhibitor.
above technical characterictic has formed embodiments of the invention, and it has stronger adaptability and implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
Claims (9)
1. an imitative oil base drilling fluid potent inhibitor for drilling fluid, is characterized in that raw materials by weight portion consists of 20 parts to 30 parts of starch, 30 parts to 38 parts of aldehydes, 5 parts to 10 parts of thiocols, 1 part to 5 parts of acidic initiator, 25 parts to 35 parts, water.
2. drilling fluid according to claim 1 is with imitating the oil base drilling fluid potent inhibitor, it is characterized in that this drilling fluid obtains as follows with imitative oil base drilling fluid potent inhibitor, the starch of aequum, aldehydes, thiocol and water are added in reactor and is mixed, regulating pH with alkalinity regulator is 6 to 8.5, then add the acidic initiator of aequum and be mixed, reacting by heating still to the temperature of charge in reactor is 60 ℃ to 100 ℃, and back flow reaction obtains imitative oil base drilling fluid potent inhibitor for drilling fluid in 16 hours to 24 hours.
3. imitative oil base drilling fluid potent inhibitor for drilling fluid according to claim 1 and 2, is characterized in that aldehydes is formaldehyde; Perhaps aldehydes is acetaldehyde; The mixture that perhaps aldehydes is formaldehyde and acetaldehyde.
4. imitative oil base drilling fluid potent inhibitor for drilling fluid according to claim 3, is characterized in that formaldehyde is technical grade formaldehyde; Acetaldehyde is technical grade acetaldehyde.
5. according to claim 1 or the imitative oil base drilling fluid potent inhibitor of 2 or 3 or 4 described drilling fluids, it is characterized in that acidic initiator is more than one mixtures in sodium pyrosulfate, boron trifluoride diethyl etherate network, S-WAT, sodium bisulfite, tosic acid; Or/and it is 10 minutes to 30 minutes that the temperature of charge in reactor is raised to heat-up time of 60 ℃ to 100 ℃.
6. the preparation method of imitative oil base drilling fluid potent inhibitor for a drilling fluid according to claim 1, it is characterized in that being undertaken by following, the starch of aequum, aldehydes, thiocol and water are added in reactor and is mixed, regulating pH with alkalinity regulator is 6 to 8.5, then add the acidic initiator of aequum and be mixed, reacting by heating still to the temperature of charge in reactor is 60 ℃ to 100 ℃, and back flow reaction obtains imitative oil base drilling fluid potent inhibitor for drilling fluid in 16 hours to 24 hours.
7. the preparation method of imitative oil base drilling fluid potent inhibitor for drilling fluid according to claim 6, is characterized in that aldehydes is formaldehyde; Perhaps aldehydes is acetaldehyde; The mixture that perhaps aldehydes is formaldehyde and acetaldehyde.
8. the preparation method of imitative oil base drilling fluid potent inhibitor for drilling fluid according to claim 7, is characterized in that formaldehyde is technical grade formaldehyde; Acetaldehyde is technical grade acetaldehyde.
9. according to claim 6 or the 7 or 8 described drilling fluids preparation methods that imitate the oil base drilling fluid potent inhibitor, it is characterized in that acidic initiator is more than one mixtures in sodium pyrosulfate, boron trifluoride diethyl etherate network, S-WAT, sodium bisulfite, tosic acid; Or/and it is 10 minutes to 30 minutes that the temperature of charge in reactor is raised to heat-up time of 60 ℃ to 100 ℃.
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CN103497743B CN103497743B (en) | 2016-08-10 |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5565416A (en) * | 1994-01-10 | 1996-10-15 | Phillips Petroleum Company | Corrosion inhibitor for wellbore applications |
CN1234821A (en) * | 1996-10-15 | 1999-11-10 | 菲利浦石油公司 | Corrosion inhibitor for wellbore application |
-
2013
- 2013-09-18 CN CN201310427447.2A patent/CN103497743B/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5565416A (en) * | 1994-01-10 | 1996-10-15 | Phillips Petroleum Company | Corrosion inhibitor for wellbore applications |
CN1234821A (en) * | 1996-10-15 | 1999-11-10 | 菲利浦石油公司 | Corrosion inhibitor for wellbore application |
Non-Patent Citations (1)
Title |
---|
高锦屏等: "阳离子淀粉―烯类单体接枝聚合物OCSP的研制", 《钻井液与完井液》 * |
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Effective date of registration: 20220104 Address after: 834000 No. 2500-1, Ping An Avenue, Baijiantan District, Karamay City, Xinjiang Uygur Autonomous Region Patentee after: Xinjiang beiken Chemical Co.,Ltd. Patentee after: Xinjiang beiken Energy Engineering Co., Ltd Address before: 834009 No.91, menmen Road, Baijiantan District, Karamay City, Xinjiang Uygur Autonomous Region Patentee before: Xinjiang Beiken Energy Engineering Stock Co.,Ltd. |
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