CN103215017A - Electronpositive borehole wall stabilizer applied to oil and gas drilling and preparation method of electronpositive borehole wall stabilizer - Google Patents
Electronpositive borehole wall stabilizer applied to oil and gas drilling and preparation method of electronpositive borehole wall stabilizer Download PDFInfo
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- CN103215017A CN103215017A CN2013101239138A CN201310123913A CN103215017A CN 103215017 A CN103215017 A CN 103215017A CN 2013101239138 A CN2013101239138 A CN 2013101239138A CN 201310123913 A CN201310123913 A CN 201310123913A CN 103215017 A CN103215017 A CN 103215017A
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Abstract
The invention discloses an electronpositive borehole wall stabilizer applied to oil and gas drilling and a preparation method of the electronpositive borehole wall stabilizer. The electronpositive borehole wall stabilizer applied to oil and gas drilling is prepared from the following components in percentage by mass: 15 to 30% of solvent oil, 35 to 50% of asphalt, 3.5 to 6% of liquid protective agent, 1 to 4% of emulsifying agent, 1.5 to 5% of solid protective agent, 3 to 6% of inorganic acid, and the balance of inorganic salt solution; the electronpositive borehole wall stabilizer is a brownish black jelly and has pH (Potential Of Hydrogen) being 2 to 5, an electrokinetic potential being not less than 40mV, colloidal stability being not less than 90 days, and apparent viscosity increase rate being not less than 40%, and has shale recovery ratio being more than 10% of that of a KC1 solution; and the electronpositive borehole wall stabilizer has excellent water solubility, and relatively wide and adjustable distribution of softening points, is remarkable in force shearing effect, can perform the effects of inhibiting, blocking, and preventing the well from collapsing at the same time, and has relatively high adaptability to the stratum in a long-open-hole section.
Description
Technical field
The invention belongs to the oil/gas drilling technical field, relate in particular to a kind of oil/gas drilling positive polarity borehole wall stabilizer and preparation method thereof.
Background technology
The wellbore stability problem is a complex world difficult problem that often runs in the oil/gas drilling engineering, particularly after the eighties in 20th century, along with Exploration Domain is constantly expanded to the newly developed area, drilling strata is increasingly sophisticated, and borehole instability problems is still very outstanding in the drilling process.
The reason of mud shale stratum unstability can be divided into two big classes from bringing out on the mechanism: Mechanics Cause and physical chemistry reason; Mechanics Cause comprises the mud shale viscous deformation, hard brittle shale along the slip of slipping plane (bedding, joint, crack etc.) and drilling fluid density can not the balance tectonic stress or mud shale deposition compacting process in the mud shale that causes such as formed abnormal pressure break or peel off and cave in; The physical chemistry reason is meant that drilling fluid and mud shale stratum generation physics chemical action cause hydration swelling and dispersion, cause degradation under the rock strength.
At the physical chemistry reason of borehole well instability, adopt at present and suppress anti-collapse dose polymkeric substance, inorganic salt, organic salt and the organic amine etc. that suppress class are arranged, and the polymeric alcohol, ultra-low penetration agent, oxidized bitumen, sulfonated gilsonite etc. that play plugging action.This two classes borehole wall stabilizer mechanism of action is more single relatively, can not bring into play simultaneously and suppress and the anti-collapse effect of shutoff, and existing oxidized bitumen, sulfonated gilsonite softening temperature is narrower, and is relatively poor to long open hole section ground adaptability.
Summary of the invention
The invention provides a kind of oil/gas drilling positive polarity borehole wall stabilizer and preparation method thereof, be intended to solve the borehole wall stabilizer that prior art provides, the mechanism of action is more single relatively, can not bring into play simultaneously the borehole wall and suppress and the anti-collapse effect of shutoff, and to the relatively poor problem of long open hole section ground adaptability.
The object of the present invention is to provide a kind of oil/gas drilling positive polarity borehole wall stabilizer; this oil/gas drilling is prepared from by solvent oil, pitch, liquid protectant, emulsifying agent, solid protective material, mineral acid, inorganic salt solution with the positive polarity borehole wall stabilizer; the quality percentage composition is as follows: the solvent oil of 15%-30%, the pitch of 35%-50%, the solid protective material of the liquid protectant of 3.5%-6%, the emulsifying agent of 1%-4%, 1.5%-5%, the mineral acid of 3%-6%.
Further, described solvent oil adopt 5# diesel oil, 0# diesel oil ,-10# diesel oil, 3# kerosene, aviation kerosene, 3# white oil, 5# white oil, or by 5# diesel oil, 0# diesel oil ,-composition that 10# diesel oil, 3# kerosene, aviation kerosene, 3# white oil, 5# white oil are formed.
Further, described pitch adopts petroleum pitch, petroleum pitch adopts 5# special asphalt, 10# building solid pitch, 40# road bitumen, 50# road bitumen, 70# road bitumen, or the composition of being made up of 5# special asphalt, 10# building solid pitch, 40# road bitumen, 50# road bitumen, 70# road bitumen.
Further, described liquid protectant is the temperature resistance polymers soln that apparent viscosity reaches 30mPas, and the temperature resistance polymers soln is cationization ammonium base polymer or polyvinyl alcohol.
Further, described emulsifying agent is a distearyl dimethyl ammonium chloride, the octadecyl benzyl ammonium chloride, octadecyl trimethyl ammonium chloride, Varisoft 432PPG, palmityl trimethyl ammonium chloride, two dodecyl dimethyl ammonium chlorides, dodecyl dimethyl Bian ammonium chloride, Dodecyl trimethyl ammonium chloride, or by distearyl dimethyl ammonium chloride, the octadecyl benzyl ammonium chloride, octadecyl trimethyl ammonium chloride, Varisoft 432PPG, palmityl trimethyl ammonium chloride, two dodecyl dimethyl ammonium chlorides, dodecyl dimethyl Bian ammonium chloride, the composition that Dodecyl trimethyl ammonium chloride is formed.
Further, described solid protective material is calcium oxide, calcium hydroxide, sodium hydroxide, potassium hydroxide, yellow soda ash, sodium bicarbonate, or the composition of being made up of calcium oxide, calcium hydroxide, sodium hydroxide, potassium hydroxide, yellow soda ash, sodium bicarbonate.
Further, described mineral acid is a strong acid, and strong acid adopts the vitriol oil, concentrated hydrochloric acid, nitrosonitric acid, or the composition of being made up of the vitriol oil, concentrated hydrochloric acid, nitrosonitric acid.
Further, described inorganic salt solution is monovalent salt or divalent salt solutions, and inorganic salt adopt calcium chloride, magnesium chloride, sodium-chlor, Repone K, sodium sulfate, or the composition of being made up of calcium chloride, magnesium chloride, sodium-chlor, Repone K, sodium sulfate.
Further, this oil/gas drilling is the brownish black jelly with the positive polarity borehole wall stabilizer, pH value 2-5, and electro kinetic potential 〉=40mV, colloidal stability 〉=90 day, apparent viscosity raising rate 〉=40%, the shale rate of recovery is greater than 10%KCl solution.
Another object of the present invention is to provide the preparation method of a kind of oil/gas drilling with the positive polarity borehole wall stabilizer, this preparation method may further comprise the steps:
Step 1 under agitation condition, is dissolved in pitch in the dissolving oil that is heated to 120 ℃～140 ℃, and fully the dissolving back adds liquid protectant, emulsifying agent, solid protective material;
Step 2 after 100 ℃～110 ℃ down insulations, stirring 1 hour～1.5 hours, adds mineral acid, continues to stir, be incubated 0.5 hour～1 hour after, the adding inorganic salt solution;
Step 3, cool the temperature to 80 ℃～90 ℃ after, stir, insulation 20 minutes～30 minutes, continue to stir discharging when temperature drops to 60 ℃.
Oil/gas drilling provided by the invention positive polarity borehole wall stabilizer and preparation method thereof, this oil/gas drilling positive polarity borehole wall stabilizer is prepared from by solvent oil, pitch, liquid protectant, emulsifying agent, solid protective material, mineral acid, inorganic salt solution, the quality percentage composition is as follows: the 15%-30% solvent oil, 35%-50% pitch, the 3.5%-6% liquid protectant, 1%-4% emulsifying agent, 1.5%-5% solid protective material, the 3%-6% mineral acid, all the other are inorganic salt solution; This positive polarity borehole wall stabilizer is the brownish black jelly, pH value 2-5, and electro kinetic potential 〉=40mV, colloidal stability 〉=90 day, apparent viscosity raising rate 〉=40%, the shale rate of recovery is greater than 10%KCl solution; Have good water solubility, softening temperature wider distribution and adjustable, the shear force effect is obvious, suppress, the anti-collapse effect of shutoff is strong, can bring into play simultaneously the borehole wall and suppress and the anti-collapse effect of shutoff, and stronger to long open hole section ground adaptability, have stronger popularization and using value.
Description of drawings
Fig. 1 is the realization flow figure of the oil/gas drilling that provides of the embodiment of the invention with the preparation method of positive polarity borehole wall stabilizer.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further described in detail below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in the qualification invention.
The object of the present invention is to provide a kind of oil/gas drilling positive polarity borehole wall stabilizer; this oil/gas drilling is prepared from by solvent oil, pitch, liquid protectant, emulsifying agent, solid protective material, mineral acid, inorganic salt solution with the positive polarity borehole wall stabilizer; the quality percentage composition is as follows: the solvent oil of 15%-30%, the pitch of 35%-50%, the solid protective material of the liquid protectant of 3.5%-6%, the emulsifying agent of 1%-4%, 1.5%-5%, the mineral acid of 3%-6%.
In embodiments of the present invention, solvent oil adopt 5# diesel oil, 0# diesel oil ,-10# diesel oil, 3# kerosene, aviation kerosene, 3# white oil, 5# white oil, or by 5# diesel oil, 0# diesel oil ,-composition that 10# diesel oil, 3# kerosene, aviation kerosene, 3# white oil, 5# white oil are formed.
In embodiments of the present invention, pitch adopts petroleum pitch, petroleum pitch adopts 5# special asphalt, 10# building solid pitch, 40# road bitumen, 50# road bitumen, 70# road bitumen, or the composition of being made up of 5# special asphalt, 10# building solid pitch, 40# road bitumen, 50# road bitumen, 70# road bitumen.
In embodiments of the present invention, liquid protectant is the temperature resistance polymers soln that apparent viscosity reaches 30mPas, and the temperature resistance polymers soln is cationization ammonium base polymer or polyvinyl alcohol.
In embodiments of the present invention, emulsifying agent is a distearyl dimethyl ammonium chloride, the octadecyl benzyl ammonium chloride, octadecyl trimethyl ammonium chloride, Varisoft 432PPG, palmityl trimethyl ammonium chloride, two dodecyl dimethyl ammonium chlorides, dodecyl dimethyl Bian ammonium chloride, Dodecyl trimethyl ammonium chloride, or by distearyl dimethyl ammonium chloride, the octadecyl benzyl ammonium chloride, octadecyl trimethyl ammonium chloride, Varisoft 432PPG, palmityl trimethyl ammonium chloride, two dodecyl dimethyl ammonium chlorides, dodecyl dimethyl Bian ammonium chloride, the composition that Dodecyl trimethyl ammonium chloride is formed.
In embodiments of the present invention, the solid protective material is calcium oxide, calcium hydroxide, sodium hydroxide, potassium hydroxide, yellow soda ash, sodium bicarbonate, or the composition of being made up of calcium oxide, calcium hydroxide, sodium hydroxide, potassium hydroxide, yellow soda ash, sodium bicarbonate.
In embodiments of the present invention, mineral acid is a strong acid, and strong acid adopts the vitriol oil, concentrated hydrochloric acid, nitrosonitric acid, or the composition of being made up of the vitriol oil, concentrated hydrochloric acid, nitrosonitric acid.
In embodiments of the present invention, inorganic salt solution is monovalent salt or divalent salt solutions, and inorganic salt adopt calcium chloride, magnesium chloride, sodium-chlor, Repone K, sodium sulfate, or the composition of being made up of calcium chloride, magnesium chloride, sodium-chlor, Repone K, sodium sulfate.
In embodiments of the present invention, this oil/gas drilling is the brownish black jelly with the positive polarity borehole wall stabilizer, pH value 2-5, and electro kinetic potential 〉=40mV, colloidal stability 〉=90 day, apparent viscosity raising rate 〉=40%, the shale rate of recovery is greater than 10%KCl solution.
The oil/gas drilling that Fig. 1 shows the embodiment of the invention the to be provided preparation method's of positive polarity borehole wall stabilizer realization flow.
This preparation method may further comprise the steps:
In step S101, under agitation condition, pitch is dissolved in the dissolving oil that is heated to 120 ℃～140 ℃, fully the dissolving back adds liquid protectant, emulsifying agent, solid protective material;
In step S102, after 100 ℃～110 ℃ down insulations, stirring 1 hour～1.5 hours, add mineral acid, continue to stir, be incubated 0.5 hour～1 hour after, the adding inorganic salt solution;
In step S103, cool the temperature to 80 ℃～90 ℃ after, stir, insulation 20 minutes～30 minutes, continue to stir discharging when temperature drops to 60 ℃.
Below in conjunction with drawings and the specific embodiments application principle of the present invention is further described.
The objective of the invention is at anti-collapse dose of shutoff class in the present petroleum drilling a stratum pore texture and the relatively poor difficult problem of thermal adaptability, a kind of positive polarity borehole wall stabilizer that has inhibition and shutoff caving-preventing ability simultaneously is provided, and water-sensitive strata and microfissure are grown the wellbore stability technical barrier on stratum in the solution oil/gas drilling.
The object of the present invention is achieved like this: a kind of oil/gas drilling positive polarity borehole wall stabilizer; be prepared from by solvent oil, pitch, liquid protectant, emulsifying agent, solid protective material, mineral acid, inorganic salt solution; the quality percentage composition is as follows: the 15%-30% solvent oil; 35%-50% pitch; the 3.5%-6% liquid protectant, 1%-4% emulsifying agent, 1.5%-5% solid protective material; the 3%-6% mineral acid, all the other are inorganic salt solution.
According to concrete preferred embodiment of the present invention, oil/gas drilling among the present invention is with in the positive polarity borehole wall stabilizer, solvent oil be 5# diesel oil, 0# diesel oil ,-10# diesel oil, 3# kerosene, aviation kerosene, 3# white oil, 5# white oil, or their combination.
According to concrete preferred embodiment of the present invention, oil/gas drilling among the present invention is with in the positive polarity borehole wall stabilizer, pitch is petroleum pitch, can be that 5# treats kind of a pitch, 10# building solid pitch, 40# road bitumen, 50# road bitumen, 70 road bitumens, or their combination.
According to concrete preferred embodiment of the present invention, the oil/gas drilling among the present invention is with in the positive polarity borehole wall stabilizer, and liquid protectant is the temperature resistance polymers soln that apparent viscosity reaches 30mPas, and used polymkeric substance is cationization ammonium base polymer or polyvinyl alcohol.
According to concrete preferred embodiment of the present invention, oil/gas drilling among the present invention is with in the positive polarity borehole wall stabilizer, emulsifying agent is distearyl dimethyl ammonium chloride, octadecyl benzyl ammonium chloride, octadecyl trimethyl ammonium chloride, Varisoft 432PPG, palmityl trimethyl ammonium chloride, two dodecyl dimethyl ammonium chloride, dodecyl dimethyl Bian ammonium chloride, Dodecyl trimethyl ammonium chloride, or their combination.
According to concrete preferred embodiment of the present invention, the oil/gas drilling among the present invention is with in the positive polarity borehole wall stabilizer, and the solid protective material is calcium oxide, calcium hydroxide, sodium hydroxide, potassium hydroxide, yellow soda ash, sodium bicarbonate, or their combination.
According to concrete preferred embodiment of the present invention, the oil/gas drilling among the present invention is with in the positive polarity borehole wall stabilizer, and mineral acid is a strong acid, can be the vitriol oil, concentrated hydrochloric acid, nitrosonitric acid, or their combination.
According to concrete preferred embodiment of the present invention, the oil/gas drilling among the present invention is with in the positive polarity borehole wall stabilizer, and inorganic salt solution is monovalent salt or divalent salt solutions, can be calcium chloride, magnesium chloride, sodium-chlor, Repone K, sodium sulfate, or their combination.
According to concrete preferred embodiment of the present invention, the oil/gas drilling among the present invention is the brownish black jelly with the positive polarity borehole wall stabilizer, pH value 2-5, electro kinetic potential 〉=40mV, colloidal stability 〉=90 day, apparent viscosity raising rate 〉=40%, the shale rate of recovery is greater than 10%KCl solution.
According to concrete preferred embodiment of the present invention; oil/gas drilling among the present invention with the preparation method of positive polarity borehole wall stabilizer is; at first under agitation condition, pitch is dissolved in the dissolving oil that is heated to 120 ℃～140 ℃; fully the dissolving back adds liquid protectant; emulsifying agent; the solid protective material; 100 ℃～110 ℃ insulations down; stir after 1 hour～1.5 hours and add mineral acid; continue to stir; add inorganic salt solution after being incubated 0.5 hour～1 hour; stir after cooling the temperature to 80 ℃～90 ℃; after being incubated 20 minutes～30 minutes, stirring drops to 60 ℃ of dischargings.
The invention provides a kind of oil/gas drilling positive polarity borehole wall stabilizer and preparation method thereof, this positive polarity borehole wall stabilizer is suitable for using in water-sensitive strata and the microfissure growth strata drilling, on performance, positive polarity borehole wall stabilizer provided by the invention has aquation inhibition and shutoff caving-preventing ability simultaneously, in use, the invention process does not need formulated equipment.
The experimental technique that is adopted in the following specific embodiment is ordinary method if no special instructions, and used material, reagent etc. if no special instructions, all can obtain from commercial channels in the following specific embodiment.
Solvent oil in the following specific embodiment of the present invention is bought the farsighted chemical industry company limited that reaches in Jinan; Pitch is bought the petrochemical industry company limited of radically reforming in Shandong; Cationic polymers is bought in Shandong Dongying Nore chemical industry limited liability company; Emulsifying agent is bought in Shandong this specialization of richness worker company limited; Calcium oxide is bought in Shanghai nation with calcium hydroxide and is become chemical industry company limited; Mineral acid is bought in Dongying City Chun-shan Mountain industry and trade limited liability company; Inorganic salt are bought the chemical industry company limited of prosperous Tontru in Jinan.
1, drilling well prepares with the positive polarity borehole wall stabilizer among the present invention
Embodiment one: add 3# kerosene 80g in the 500mL there-necked flask; Kerosene is heated to 110 ℃, opens stirrer, in there-necked flask, add 10# pitch 65g, 70# pitch 65g, be warming up to 118 ℃ after insulation, treat to be cooled to 100 ℃ after the pitch off-bottom; In there-necked flask, add liquid protectant 12g, emulsifying agent 4g, calcium oxide 6g, be incubated 30 minutes down at 92 ℃; In there-necked flask, add concentrated hydrochloric acid 10g, be incubated 40 minutes down at 90 ℃; In there-necked flask, add 10% calcium chloride solution 80g, be incubated 20 minutes.Stop heating, when treating that temperature is reduced to about 65 ℃ in the there-necked flask, stop to stir, pour out sample in sample bottle, to be evaluated.
Embodiment two: add 3# kerosene 90g in the 500mL there-necked flask; Kerosene is heated to 115 ℃, opens stirrer, in there-necked flask, add 5# pitch 60g, 40# pitch 60g, be warming up to 124 ℃ after insulation, treat to be cooled to 105 ℃ after the pitch off-bottom; In there-necked flask, add liquid protectant 14g, emulsifying agent 6g, calcium hydroxide 9g, be incubated 40 minutes down at 97 ℃; In there-necked flask, add concentrated hydrochloric acid l3g, be incubated 40 minutes down at 95 ℃; In there-necked flask, add 10% calcium chloride solution 70g, be incubated 20 minutes.Stop heating, when treating that temperature is reduced to about 70 ℃ in the there-necked flask, stop to stir, pour out sample in sample bottle, to be evaluated.
Embodiment three: add 0# diesel oil 80g in the 500mL there-necked flask; Diesel oil is heated to 115 ℃, opens stirrer, in there-necked flask, add 5# pitch 50g, 40# pitch 40g, 70# pitch 30g, be warming up to 124 ℃ after insulation, treat to be cooled to l05 ℃ after the pitch off-bottom; In there-necked flask, add liquid protectant 13g, emulsifying agent 5g, calcium oxide 8g, be incubated 30 minutes down at 97 ℃; In there-necked flask, add concentrated hydrochloric acid 12g, be incubated 40 minutes down at 95 ℃; In there-necked flask, add 20% sodium chloride solution 50g, be incubated 20 minutes.Stop heating, when treating that temperature is reduced to about 65 ℃ in the there-necked flask, stop to stir, pour out sample in sample bottle, to be evaluated.
2, the performance index that drilling well realizes with the positive polarity borehole wall stabilizer among the present invention
Adopt the experimental technique of national standard " water-base drilling fluid On-Site Test Procedure (GB/T16783-1997) " regulation, estimated among embodiment one, embodiment two and the embodiment three physicochemical property and the use properties that obtain the positive polarity borehole wall stabilizer, evaluation result sees Table 1, shown in table 2 and the table 3.
Positive polarity borehole wall stabilizer performance index among table 1 embodiment one
Annotate: the experiment rock sample clear water rate of recovery is 21.8%
Positive polarity borehole wall stabilizer performance index among table 2 embodiment two
Annotate: the experiment rock sample clear water rate of recovery is 21.8%
Positive polarity borehole wall stabilizer performance index among table 3 embodiment three
Annotate: the experiment rock sample clear water rate of recovery is 21.8%
Oil/gas drilling of the present invention the results are shown in Table shown in 4 with the performance index his-and-hers watches of positive polarity borehole wall stabilizer (embodiment two samples) with existing cationic emulsified bitumen, sulfonated gilsonite.
Positive polarity borehole wall stabilizer and existing analogous products performance comparison result among table 4 embodiment two
Annotate: the experiment rock sample clear water rate of recovery is 21.8%
Comparing result shows that the oil/gas drilling among the present invention has the following advantages with the positive polarity borehole wall stabilizer:
(1) oil/gas drilling provided by the invention positive polarity borehole wall stabilizer good water solubility is easy to use in water-base drilling fluid;
(2) oil/gas drilling provided by the invention is stronger with the positive polarity of positive polarity borehole wall stabilizer, helps the wilkinite inferior in wellbore stability and the removing drilling fluid;
(3) oil/gas drilling provided by the invention can improve viscosity, the shear force of drilling fluid with the positive polarity borehole wall stabilizer, helps strengthening the effect that it carried, suspended drilling cuttings and high-density weighting material;
(4) the oil/gas drilling provided by the invention softening temperature wider distribution of positive polarity borehole wall stabilizer, and can regulate and control by the combination of pitch model, make its adaptability strong to the stratum, can be used for longer open hole section drilling well;
(5) oil/gas drilling provided by the invention is good with positive polarity borehole wall stabilizer colloidal stability, helps storing and prolonging life cycle;
(6) oil/gas drilling provided by the invention has inhibition and shutoff caving-preventing ability simultaneously with the positive polarity borehole wall stabilizer, can bring into play comprehensive stabilizing borehole effect.
The oil/gas drilling that the embodiment of the invention provides positive polarity borehole wall stabilizer and preparation method thereof, this oil/gas drilling positive polarity borehole wall stabilizer is prepared from by solvent oil, pitch, liquid protectant, emulsifying agent, solid protective material, mineral acid, inorganic salt solution, the quality percentage composition is as follows: the 15%-30% solvent oil, 35%-50% pitch, the 3.5%-6% liquid protectant, 1%-4% emulsifying agent, 1.5%-5% solid protective material, the 3%-6% mineral acid, all the other are inorganic salt solution; This positive polarity borehole wall stabilizer is the brownish black jelly, pH value 2-5, and electro kinetic potential 〉=40mV, colloidal stability 〉=90 day, apparent viscosity raising rate 〉=40%, the shale rate of recovery is greater than 10%KCl solution; Have good water solubility, softening temperature wider distribution and adjustable, the shear force effect is obvious, suppress, the anti-collapse effect of shutoff is strong, can bring into play simultaneously the borehole wall and suppress and the anti-collapse effect of shutoff, and stronger to long open hole section ground adaptability, have stronger popularization and using value.
Below only be preferred embodiment of the present invention,, all any modifications of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention not in order to restriction the present invention.
Claims (10)
1. oil/gas drilling positive polarity borehole wall stabilizer; it is characterized in that; this oil/gas drilling is prepared from by solvent oil, pitch, liquid protectant, emulsifying agent, solid protective material, mineral acid, inorganic salt solution with the positive polarity borehole wall stabilizer; the quality percentage composition is as follows: the solvent oil of 15%-30%, the pitch of 35%-50%, the solid protective material of the liquid protectant of 3.5%-6%, the emulsifying agent of 1%-4%, 1.5%-5%, the mineral acid of 3%-6%.
2. oil/gas drilling positive polarity borehole wall stabilizer as claimed in claim 1, it is characterized in that, described solvent oil adopt 5# diesel oil, 0# diesel oil ,-10# diesel oil, 3# kerosene, aviation kerosene, 3# white oil, 5# white oil, or by 5# diesel oil, 0# diesel oil ,-composition that 10# diesel oil, 3# kerosene, aviation kerosene, 3# white oil, 5# white oil are formed.
3. oil/gas drilling positive polarity borehole wall stabilizer as claimed in claim 1, it is characterized in that, described pitch adopts petroleum pitch, petroleum pitch adopts 5# special asphalt, 10# building solid pitch, 40# road bitumen, 50# road bitumen, 70# road bitumen, or the composition of being made up of 5# special asphalt, 10# building solid pitch, 40# road bitumen, 50# road bitumen, 70# road bitumen.
4. oil/gas drilling positive polarity borehole wall stabilizer as claimed in claim 1 is characterized in that, described liquid protectant is the temperature resistance polymers soln that apparent viscosity reaches 30mPas, and the temperature resistance polymers soln is cationization ammonium base polymer or polyvinyl alcohol.
5. oil/gas drilling positive polarity borehole wall stabilizer as claimed in claim 1, it is characterized in that, described emulsifying agent is a distearyl dimethyl ammonium chloride, the octadecyl benzyl ammonium chloride, octadecyl trimethyl ammonium chloride, Varisoft 432PPG, palmityl trimethyl ammonium chloride, two dodecyl dimethyl ammonium chlorides, dodecyl dimethyl Bian ammonium chloride, Dodecyl trimethyl ammonium chloride, or by distearyl dimethyl ammonium chloride, the octadecyl benzyl ammonium chloride, octadecyl trimethyl ammonium chloride, Varisoft 432PPG, palmityl trimethyl ammonium chloride, two dodecyl dimethyl ammonium chlorides, dodecyl dimethyl Bian ammonium chloride, the composition that Dodecyl trimethyl ammonium chloride is formed.
6. oil/gas drilling positive polarity borehole wall stabilizer as claimed in claim 1; it is characterized in that; described solid protective material is calcium oxide, calcium hydroxide, sodium hydroxide, potassium hydroxide, yellow soda ash, sodium bicarbonate, or the composition of being made up of calcium oxide, calcium hydroxide, sodium hydroxide, potassium hydroxide, yellow soda ash, sodium bicarbonate.
7. oil/gas drilling positive polarity borehole wall stabilizer as claimed in claim 1 is characterized in that described mineral acid is a strong acid, and strong acid adopts the vitriol oil, concentrated hydrochloric acid, nitrosonitric acid, or the composition of being made up of the vitriol oil, concentrated hydrochloric acid, nitrosonitric acid.
8. oil/gas drilling positive polarity borehole wall stabilizer as claimed in claim 1, it is characterized in that, described inorganic salt solution is monovalent salt or divalent salt solutions, inorganic salt adopt calcium chloride, magnesium chloride, sodium-chlor, Repone K, sodium sulfate, or the composition of being made up of calcium chloride, magnesium chloride, sodium-chlor, Repone K, sodium sulfate.
9. oil/gas drilling positive polarity borehole wall stabilizer as claimed in claim 1, it is characterized in that, this oil/gas drilling is the brownish black jelly with the positive polarity borehole wall stabilizer, pH value 2-5, electro kinetic potential 〉=40mV, colloidal stability 〉=90 day, apparent viscosity raising rate 〉=40%, shale with yield greater than 10%KCl solution.
10. an oil/gas drilling is characterized in that this preparation method may further comprise the steps with the preparation method of positive polarity borehole wall stabilizer:
Step 1 under agitation condition, is dissolved in pitch in the dissolving oil that is heated to 120 ℃～140 ℃, and fully the dissolving back adds liquid protectant, emulsifying agent, solid protective material;
Step 2 after 100 ℃～110 ℃ down insulations, stirring 1 hour～1.5 hours, adds mineral acid, continues to stir, be incubated 0.5 hour～1 hour after, the adding inorganic salt solution;
Step 3, cool the temperature to 80 ℃～90 ℃ after, stir, insulation 20 minutes～30 minutes, continue to stir discharging when temperature drops to 60 ℃.
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| CN107828389A (en) * | 2017-09-04 | 2018-03-23 | 南通捷皋家具有限公司 | A kind of antifreeze coolant for outdoor building equipment |
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| CN103013471A (en) * | 2011-09-26 | 2013-04-03 | 唐继平 | Method for drilling well by using UDM-1 unconventional well-drilling fluid system |
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| CN1305965C (en) * | 2005-08-05 | 2007-03-21 | 倪红霞 | Cation asphalt anti-collapse agent emulsion and its producing method and using method |
| CN102102013A (en) * | 2009-12-18 | 2011-06-22 | 中国石油天然气股份有限公司 | Inorganic boron high-temperature delayed fracturing fluid |
| CN101921579B (en) * | 2010-09-29 | 2013-01-09 | 中国石油集团西部钻探工程有限公司 | Low-fluorescence sticking reliever and preparation method thereof |
| CN102010605B (en) * | 2010-11-26 | 2012-05-23 | 陕西长大博源公路养护科技有限公司 | Fog sealing layer asphalt emulsion admixture and use method thereof |
| CN102070909B (en) * | 2010-12-08 | 2013-01-09 | 中国石油集团西部钻探工程有限公司 | Cation modified asphalt and preparation method thereof |
| CN103013471A (en) * | 2011-09-26 | 2013-04-03 | 唐继平 | Method for drilling well by using UDM-1 unconventional well-drilling fluid system |
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| CN107828389A (en) * | 2017-09-04 | 2018-03-23 | 南通捷皋家具有限公司 | A kind of antifreeze coolant for outdoor building equipment |
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