1-sulfopropionic acid lauryl alcohol ester derivative extreme pressure lubricant for drilling fluid as well as preparation method and application of 1-sulfopropionic acid lauryl alcohol ester derivative extreme pressure lubricant

Abstract

The invention discloses a 1-laurinol sulfonate propionate derivative extreme pressure lubricant for drilling fluid as well as a preparation method and application thereof, and belongs to the technical field of petroleum drilling fluid, the 1-laurinol sulfonate propionate derivative extreme pressure lubricant is a compound as shown in a chemical structural formula I; the chemical structural formula I is # imgabs0 #, wherein R1 is amino or an amino derivative. According to the 1-lauryl sulfopropionate derivative extreme pressure lubricant for the drilling fluid, functional groups of N, S and O elements containing lone pair electrons serve as physical adsorption groups, a layer of physical adsorption film is formed by the lubricant, a metal drilling tool and rock in the drilling process, chemical reaction occurs under the extreme pressure condition, and a high-strength chemical reaction film is generated; corrosion to a drilling tool in the drilling process is relieved, and the service life of the drilling tool is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum drilling fluid and relates to an extreme pressure lubricant of 1-lauryl sulfopropionate derivative for drilling fluid. Background Art

[0002] With the development of industrialization, the consumption of fossil energy is increasing, shallow oil and gas fields are becoming increasingly depleted, and the development of deep oil and gas fields is gaining momentum. However, in the development of complex oil and gas fields such as horizontal wells and ultra-deep wells, complex accidents such as well collapse and drill stuck are often encountered.

[0003] The investigation found that lubricants can effectively reduce the lubrication coefficient of drilling tools during the drilling process. At the same time, existing animal and plant lubricants, alcohol lubricants such as triglycerides and polyethylene glycols only have good lubrication performance under relatively low temperatures and loads, and have poor lubrication performance under high temperature and extreme pressure conditions; high-temperature fraction mineral lubricants have good lubrication performance under high temperature and extreme pressure conditions, but they are not easy to decompose, have a large environmental pollution, and are not suitable for use in the field of oil and gas field development technology.

[0004] With the continuous advancement of scientific research, synthetic lubricants have gradually come into people's view. Synthetic lubricants are less toxic and can be decomposed into low-toxic organic matter by microorganisms in the environment. However, the common liquid lubricants currently used in synthetic lubricants are difficult to meet the drilling technology challenges of complex process wells such as large-displacement horizontal wells and directional wells. Summary of the invention

[0005] The purpose of the present invention is to provide an extreme pressure lubricant of 1-lauryl sulfopropionate derivative for drilling fluid, which solves the problem that ordinary liquid lubricants are difficult to meet the drilling technical difficulties of complex process wells such as large displacement horizontal wells and directional wells.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A 1-lauryl sulfonate propionate derivative extreme pressure lubricant for drilling fluid, wherein the 1-lauryl sulfonate propionate derivative extreme pressure lubricant is a compound represented by chemical structural formula I; chemical structural formula I is:

[0008]

[0009] Wherein, R1 is an amino group or an amino derivative.

[0010] The 1-lauryl sulfopropionate derivative extreme pressure lubricant for drilling fluid prepared by the present invention uses functional groups of N, S and O elements containing lone pair electrons as physical adsorption groups, forms a physical adsorption film with metal drilling tools and rocks during the drilling process, and undergoes chemical reactions under extreme pressure conditions to generate a high-strength chemical reaction film, thereby slowing down the corrosion of the drilling tools during the drilling process and extending the service life of the drilling tools.

[0011] Furthermore, the amino derivative is any one of thiourea, thioformyl dihydrazide, thioacetamide, and glyoxal dithiosemicarbazone.

[0012] A method for preparing an extreme pressure lubricant of 1-lauryl sulfopropionate derivative for drilling fluid comprises the following steps:

[0013] Step 1, obtaining raw materials: the raw materials include the following components in parts by weight: 24 parts of lauryl acrylate, 10-20 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts of tert-butyl perbenzoate, 10 parts of ferric chloride, 12 parts of triethylamine, 30 parts of thionyl chloride, 40 parts of N,N-dimethylformamide, and 4-30 parts of a substance containing R1;

[0014] Step 2, preparing intermediate A: 8 parts of deionized water, 12 parts of 1,4-dioxane, 24 parts of lauryl acrylate, 10-20 parts of sodium bisulfite, 10 parts of tert-butyl perbenzoate, and 10 parts of ferric chloride are stirred and mixed uniformly, and then reacted for 20 hours. After the reaction is completed, the intermediate A is dried to obtain intermediate A, which is lauryl 1-sulfopropionate;

[0015] Step 3, preparing intermediate B: react 32 parts of intermediate A, 30 parts of thionyl chloride, 12 parts of triethylamine, and 20 parts of N,N-dimethylformamide at 10° C. for 5 hours and then dry to obtain intermediate B, wherein intermediate B is 1-lauryl sulfonyl chloride propionate;

[0016] Step 4, preparing product C: 34 parts of intermediate B, 4 to 30 parts of a substance containing R1, and 20 parts of N,N-dimethylformamide are mixed evenly, reacted in a water bath for 6 hours, and then the solvent is removed to obtain product C. The product C is a compound shown in chemical formula I, that is, an extreme pressure lubricant of 1-sulfonic acid lauryl propionate derivative.

[0017] Furthermore, the reaction condition in step 2 is an oxygen-free environment at 50°C.

[0018] Furthermore, in step 2, 8 parts of deionized water, 12 parts of 1,4-dioxane, 24 parts of lauryl acrylate, 10 parts of tert-butyl perbenzoate and 10 parts of ferric chloride are uniformly mixed, and then 10 to 20 parts of sodium bisulfite are added, and the mixture is uniformly mixed again and reacted for 20 hours.

[0019] Furthermore, the substance containing R1 is concentrated ammonia water or thioformyl dihydrazide or thioacetamide or glyoxal dithiosemicarbazone or thiourea.

[0020] Furthermore, the specific steps of step 4 are: first, 34 parts of intermediate B and 20 parts of N,N-dimethylformamide are evenly mixed, and then the intermediate B and the N,N-dimethylformamide mixture are slowly added drop by drop into the substance containing R1 using a constant pressure funnel under 25°C water bath conditions, and then reacted in a water bath for 6 hours, and the solvent is removed to obtain product C. The product C is a compound shown in chemical formula I, that is, 1-sulfonic acid lauryl propionate derivative extreme pressure lubricant.

[0021] Furthermore, the raw materials include the following components in parts by weight: 24 parts of lauryl acrylate, 15 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts of tert-butyl perbenzoate, 10 parts of ferric chloride, 12 parts of triethylamine, 30 parts of thionyl chloride, 40 parts of N,N-dimethylformamide, and 15 parts of a substance containing R1, wherein the thionyl chloride is dichlorothionyl, and the substance containing R1 is thioformyl dihydrazide.

[0022] The invention discloses an application of a 1-lauryl sulfopropionate derivative extreme pressure lubricant for drilling fluid. The 1-lauryl sulfopropionate derivative extreme pressure lubricant is compounded with drilling fluid in the presence of base oil and is used in the oil and gas field drilling industry.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] 1. The 1-lauryl sulfopropionate derivative extreme pressure lubricant for drilling fluid of the present invention uses functional groups of N, S, and O elements containing lone pair electrons as physical adsorption groups, forms a physical adsorption film with metal drill tools and rocks during the drilling process, and undergoes chemical reactions under extreme pressure conditions to generate a high-strength chemical reaction film to slow down the corrosion of the drill tools during the drilling process and extend the service life of the drill tools, thereby meeting the technical difficulties in drilling complex process wells such as large-displacement horizontal wells and directional wells.

[0025] 2. The extreme pressure lubrication coefficient reduction rate of the lubricant obtained by the method for preparing a 1-lauryl sulfopropionate derivative extreme pressure lubricant for drilling fluid of the present invention is as high as 95%, and the mud cake adhesion coefficient reduction rate is as high as 70%. Both indicators are higher than those of commercially available extreme pressure lubricants, indicating that it has excellent lubrication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative work, among which:

[0027] Figure 1is the structural formula of the extreme pressure lubricant of 1-lauryl sulfopropionate derivative of the present invention;

[0028] Figure 2 It is the synthetic route of intermediate A of the present invention;

[0029] Figure 3 It is the synthetic route of intermediate B of the present invention;

[0030] Figure 4 The invention discloses a synthetic route for the extreme pressure lubricant of 1-sulfonic acid lauryl propionate derivative. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0033] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0035] The present invention discloses a 1-sulfonic acid lauryl alcohol ester derivative extreme pressure lubricant for drilling fluid, which is a compound shown in chemical structural formula I; chemical structural formula I is:

[0036]

[0037] Wherein, R1 is an amino group or an amino derivative.

[0038] The amino derivative is any one of thiourea, thioformyl dihydrazide, thioacetamide, and glyoxal dithiosemicarbazone.

[0039] The method for preparing the extreme pressure lubricant of 1-lauryl sulfopropionate derivative for drilling fluid comprises the following steps:

[0040] Step 1, obtaining raw materials: the raw materials include the following components in parts by weight: 24 parts of lauryl acrylate, 10-20 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts of tert-butyl perbenzoate, 10 parts of ferric chloride, 12 parts of triethylamine, 30 parts of thionyl chloride, 40 parts of N,N-dimethylformamide, and 4-30 parts of a substance containing R1; wherein the tert-butyl perbenzoate / ferric chloride catalyst system formed by tert-butyl perbenzoate and ferric chloride can be replaced by sodium nitrate.

[0041] 24 parts of lauryl acrylate, 10-20 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts of tert-butyl perbenzoate, and 10 parts of ferric chloride are raw materials for preparing intermediate A;

[0042] 12 parts of triethylamine, 30 parts of thionyl chloride, and 20 parts of N,N-dimethylformamide are combined with A as raw materials for preparing intermediate B;

[0043] Intermediate B, 20 parts of N,N-dimethylformamide, and 4 to 30 parts of a substance containing R1 are used to prepare product C; the substance containing R1 may be concentrated aqueous ammonia or thioformyl dihydrazide or thioacetamide or glyoxal dithiosemicarbazone or thiourea;

[0044] Step 2, preparing intermediate A: 8 parts of deionized water, 12 parts of 1,4-dioxane, 24 parts of lauryl acrylate, 10-20 parts of sodium bisulfite, 10 parts of tert-butyl perbenzoate, and 10 parts of ferric chloride are stirred and mixed uniformly and reacted in an oxygen-free environment at 50° C. for 20 hours. After the reaction is completed, the intermediate A is dried to obtain intermediate A, which is lauryl 1-sulfopropionate;

[0045] Step 3, preparing intermediate B: react 32 parts of intermediate A, 30 parts of thionyl chloride, 12 parts of triethylamine, and 20 parts of N,N-dimethylformamide at 10° C. for 5 hours and then dry to obtain intermediate B, wherein intermediate B is 1-lauryl sulfonyl chloride propionate;

[0046] Step 4, preparing product C: 34 parts of intermediate B, 4 to 30 parts of a substance containing R1, and 20 parts of N,N-dimethylformamide are mixed evenly, reacted in a water bath for 6 hours, and then the solvent is removed to obtain product C. The product C is a compound shown in chemical formula I, that is, an extreme pressure lubricant of 1-sulfonic acid lauryl propionate derivative.

[0047] Furthermore, the specific mixing process of step 2 is: first, 8 parts of deionized water, 12 parts of 1,4-dioxane, 24 parts of lauryl acrylate, 10 parts of tert-butyl perbenzoate, and 10 parts of ferric chloride are evenly mixed, and then 10 to 20 parts of sodium bisulfite are added, and the mixture is evenly mixed again and reacted for 20 hours.

[0048] Furthermore, the specific steps of step 4 are: first, 34 parts of intermediate B and 20 parts of N,N-dimethylformamide are evenly mixed, and then the intermediate B and the N,N-dimethylformamide mixture are slowly added drop by drop into the substance containing R1 using a constant pressure funnel under 25°C water bath conditions, and then reacted in a water bath for 6 hours, and the solvent is removed to obtain product C. The product C is a compound shown in chemical formula I, that is, 1-sulfonic acid lauryl propionate derivative extreme pressure lubricant.

[0049] The 1-lauryl sulfopropionate derivative extreme pressure lubricant is compounded with drilling fluid in the presence of base oil and is used in the oil and gas field drilling industry.

[0050] In some specific embodiments, the amount of sodium bisulfite is excessive so that the lauryl acrylate is fully reacted.

[0051] In some specific embodiments, the substance containing R1 should be slowly added dropwise in a water bath to reduce the yield of by-products and facilitate the reaction.

[0052] In the present invention: Figure 1 is the structural formula of the extreme pressure lubricant of 1-lauryl sulfopropionate derivative of the present invention;

[0053] Figure 2 It is the synthetic route of intermediate A of the present invention;

[0054] Figure 3 It is the synthetic route of intermediate B of the present invention;

[0055] Figure 4 The invention discloses a synthetic route for the extreme pressure lubricant of 1-sulfonic acid lauryl propionate derivative.

[0056] Example 1

[0057] Weigh various raw materials, including: 24 parts of lauryl acrylate, 20 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts each of tert-butyl perbenzoate / ferric chloride; 32 parts of intermediate A, 12 parts of triethylamine, 30 parts of thionyl chloride, 20 parts of N,N-dimethylformamide; 34 parts of intermediate B, 10 parts of concentrated aqueous ammonia, and 20 parts of N,N-dimethylformamide.

[0058] The specific preparation method is as follows: after uniformly stirring lauryl acrylate with deionized water and 1,4-dioxane, tert-butyl perbenzoate / ferric chloride (tert-butyl perbenzoate and ferric chloride are combined to form a catalyst) is added, after uniformly stirring, sodium bisulfite is added and stirred to react for 20 hours, and then dried and purified by column to obtain intermediate A; intermediate A, dichlorothionyl, triethylamine, and N,N-dimethylformamide are reacted at 10°C for 5 hours and then dried to obtain intermediate B; intermediate B, concentrated ammonia water, N,N-dimethylformamide are weighed, intermediate B, concentrated ammonia water, and N,N-dimethylformamide are mixed and reacted in a water bath for 6 hours, and the solvent is removed by a rotary evaporator to obtain product C; the drug is recorded as sample 1.

[0059] Example 2

[0060] Weigh various raw materials, including: 24 parts of lauryl acrylate, 20 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 17 parts of sodium nitrate; 32 parts of intermediate A, 12 parts of triethylamine, 30 parts of thionyl chloride, 20 parts of N,N-dimethylformamide; 34 parts of intermediate B, 10 parts of concentrated ammonia water, 20 parts of N,N-dimethylformamide.

[0061] The specific preparation method is as follows: after uniformly stirring lauryl acrylate with deionized water and 1,4-dioxane, sodium nitrate is added and stirred for 30 minutes, sodium bisulfite is added and stirred for 20 hours, and intermediate A is obtained after drying and column purification; intermediate A, dichlorothionyl, triethylamine and N,N-dimethylformamide are reacted at 10°C for 5 hours and dried to obtain intermediate B; intermediate B, concentrated ammonia water and N,N-dimethylformamide are weighed, intermediate B, concentrated ammonia water and N,N-dimethylformamide are mixed and reacted in a water bath for 6 hours, and the solvent is removed by a rotary evaporator to obtain product C; the drug is recorded as sample 2.

[0062] Example 3

[0063] Weigh various raw materials, including: 24 parts of lauryl acrylate, 10 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts each of tert-butyl perbenzoate / ferric chloride; 32 parts of intermediate A, 12 parts of triethylamine, 30 parts of thionyl chloride, 20 parts of N,N-dimethylformamide; 34 parts of intermediate B, 10 parts of concentrated aqueous ammonia, and 20 parts of N,N-dimethylformamide.

[0064] The specific preparation method is as follows: after uniformly stirring lauryl acrylate with deionized water and 1,4-dioxane, sodium bisulfite and tert-butyl perbenzoate / ferric chloride are added, and the mixture is stirred for 20 hours, and then dried and purified by column to obtain intermediate A; intermediate A, dichlorothionyl, triethylamine, and N,N-dimethylformamide are reacted at 10°C for 5 hours and then dried to obtain intermediate B; intermediate B, concentrated ammonia water, and N,N-dimethylformamide are weighed, intermediate B, concentrated ammonia water, and N,N-dimethylformamide are mixed, and the mixture is reacted in a water bath for 6 hours, and then the solvent is removed by a rotary evaporator to obtain product C; the drug is recorded as sample 3.

[0065] Example 4

[0066] Weigh various raw materials, including: 24 parts of lauryl acrylate, 15 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts each of tert-butyl perbenzoate / ferric chloride; 32 parts of intermediate A, 12 parts of triethylamine, 30 parts of thionyl chloride, 20 parts of N,N-dimethylformamide; 34 parts of intermediate B, 8 parts of concentrated aqueous ammonia, and 20 parts of N,N-dimethylformamide.

[0067] The specific preparation method is as follows: after uniformly stirring lauryl acrylate with deionized water and 1,4-dioxane, sodium bisulfite and catalyst tert-butyl perbenzoate / ferric chloride are added, and the mixture is stirred for 20 hours, and then dried and purified by column to obtain intermediate A; intermediate A, dichlorothionyl, triethylamine, and N,N-dimethylformamide are reacted at 10°C for 5 hours, and then dried to obtain intermediate B; intermediate B, concentrated ammonia water, and N,N-dimethylformamide are weighed, and intermediate B, concentrated ammonia water, and N,N-dimethylformamide are reacted in a water bath for 6 hours, and then the solvent is removed by a rotary evaporator to obtain product C; this drug is recorded as sample 4.

[0068] Example 5

[0069] According to the various raw materials, they include: 24 parts of lauryl acrylate, 25 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts each of tert-butyl perbenzoate / ferric chloride; 32 parts of intermediate A, 12 parts of triethylamine, 30 parts of thionyl chloride, 20 parts of N,N-dimethylformamide; 34 parts of intermediate B, 8 parts of concentrated aqueous ammonia, and 20 parts of N,N-dimethylformamide.

[0070] The specific preparation method is as follows: after uniformly stirring lauryl acrylate with deionized water and 1,4-dioxane, sodium bisulfite and catalyst tert-butyl perbenzoate / ferric chloride are added, and the mixture is stirred for 20 hours, and then dried and purified by column to obtain intermediate A; intermediate A, dichlorothionyl, triethylamine, and N,N-dimethylformamide are reacted at 10°C for 5 hours and then dried to obtain intermediate B; intermediate B, concentrated ammonia water, and N,N-dimethylformamide are weighed, intermediate B, concentrated ammonia water, and N,N-dimethylformamide are mixed, and the mixture is reacted in a water bath for 6 hours, and then the solvent is removed by a rotary evaporator to obtain product C; this drug is recorded as sample 5.

[0071] Example 6

[0072] Weigh various raw materials, including: 24 parts of lauryl acrylate, 15 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts each of tert-butyl perbenzoate / ferric chloride; 32 parts of intermediate A, 12 parts of triethylamine, 30 parts of thionyl chloride, 20 parts of N,N-dimethylformamide; 34 parts of intermediate B, 12 parts of thiourea, and 20 parts of N,N-dimethylformamide.

[0073] The specific preparation method is as follows: after uniformly stirring lauryl acrylate with deionized water and 1,4-dioxane, sodium bisulfite and catalyst tert-butyl perbenzoate / ferric chloride are added, and the mixture is stirred for 20 hours, and then dried and purified by column to obtain intermediate A; intermediate A, dichlorothionyl, triethylamine, and N,N-dimethylformamide are reacted at 10°C for 5 hours and then dried to obtain intermediate B; intermediate B, thiourea, and N,N-dimethylformamide are weighed, intermediate B, thiourea, and N,N-dimethylformamide are reacted in a water bath for 6 hours, and then the solvent is removed by a rotary evaporator to obtain product C; this drug is recorded as sample 6.

[0074] Example 7

[0075] Weigh various raw materials, including: 24 parts of lauryl acrylate, 15 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts each of tert-butyl perbenzoate / ferric chloride; 32 parts of intermediate A, 12 parts of triethylamine, 30 parts of thionyl chloride, 20 parts of N,N-dimethylformamide; 34 parts of intermediate B, 15 parts of thioformyl dihydrazide, and 20 parts of N,N-dimethylformamide.

[0076] The specific preparation method is as follows: after uniformly stirring lauryl acrylate with deionized water and 1,4-dioxane, sodium bisulfite and catalyst tert-butyl perbenzoate / ferric chloride are added, and the mixture is stirred for 20 hours, and then dried and purified by column to obtain intermediate A; intermediate A, dichlorothionyl, triethylamine, and N,N-dimethylformamide are reacted at 10°C for 5 hours, and then dried to obtain intermediate B; intermediate B, thioformyl dihydrazide, N,N-dimethylformamide are weighed, intermediate B, thioformyl dihydrazide, and N,N-dimethylformamide are reacted in a water bath for 6 hours, and then the solvent is removed by a rotary evaporator to obtain product C; this drug is recorded as sample 7.

[0077] Example 8

[0078] Weigh various raw materials, including: 24 parts of lauryl acrylate, 15 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts each of tert-butyl perbenzoate / ferric chloride; 32 parts of intermediate A, 12 parts of triethylamine, 30 parts of thionyl chloride, 20 parts of N,N-dimethylformamide; 34 parts of intermediate B, 12 parts of thioacetamide, and 20 parts of N,N-dimethylformamide.

[0079] The specific preparation method is as follows: after uniformly stirring lauryl acrylate with deionized water and 1,4-dioxane, sodium bisulfite and catalyst tert-butyl perbenzoate / ferric chloride are added, and the mixture is stirred for 20 hours, and then dried and purified by column to obtain intermediate A; intermediate A, dichlorothionyl, triethylamine, and N,N-dimethylformamide are reacted at 10°C for 5 hours, and then dried to obtain intermediate B; intermediate B, thioacetamide, N,N-dimethylformamide, intermediate B, thioacetamide, and N,N-dimethylformamide are weighed, and the reaction is carried out in a water bath for 6 hours, and then the solvent is removed by a rotary evaporator to obtain product C; the drug is recorded as sample 8.

[0080] Example 9

[0081] Weigh various raw materials, including: 24 parts of lauryl acrylate, 15 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts each of tert-butyl perbenzoate / ferric chloride; 32 parts of intermediate A, 12 parts of triethylamine, 30 parts of thionyl chloride, 20 parts of N,N-dimethylformamide; 34 parts of intermediate B, 26 parts of glyoxal dithiosemicarbazone, and 20 parts of N,N-dimethylformamide.

[0082] The specific preparation method is as follows: after uniformly stirring lauryl acrylate with deionized water and 1,4-dioxane, sodium bisulfite and catalyst tert-butyl perbenzoate / ferric chloride are added, and the mixture is stirred for 20 hours, dried and purified by column to obtain intermediate A; intermediate A, dichlorothionyl, triethylamine and N,N-dimethylformamide are reacted at 10°C for 5 hours and dried to obtain intermediate B; intermediate B, glyoxal dithiosemicarbazone, N,N-dimethylformamide are weighed, intermediate B, glyoxal dithiosemicarbazone and N,N-dimethylformamide are reacted in a water bath for 6 hours, and the solvent is removed by a rotary evaporator to obtain product C; the drug is recorded as sample 9.

[0083] Test Example 1

[0084] In order to determine the lubrication performance of the samples prepared in the present invention, the above-mentioned test example samples were mixed with base oil and non-ionic surfactant, and then added to the base slurry. The lubrication performance was evaluated by the extreme pressure lubrication coefficient determination method and the mud cake adhesion coefficient determination method. The results are shown in Table 1.

[0085] The formula of drilling fluid base slurry is: 4% bentonite, soda ash, 0.03% hydrolyzed polyacrylamide, 0.5% hydrolyzed polyacrylonitrile dry powder, water, and the amount of soda ash added is 5% of the mass of bentonite;

[0086] Base oil formula: 70% white oil, 30% diesel; add 5% by volume of base slurry

[0087] Nonionic surfactant: Polysorbate 80, added at 0.1% of the base slurry volume;

[0088] The sample addition amount is 2% of the base oil;

[0089] Blank group: The extreme pressure lubricant used was Luoyang Xipeng XP3010 boronized drilling extreme pressure agent.

[0090] The extreme pressure lubrication coefficient determination method and the mud cake adhesion coefficient determination method are existing technologies, and the present invention can directly adopt the existing technologies.

[0091] Table 1 Lubrication performance test results of samples

[0092]

[0093]

[0094] It can be seen from Table 1 that when the extreme pressure lubricant added concentration of the present invention is 10%, sample 7 has the best lubrication performance. The extreme pressure lubrication coefficient reduction rate of the present invention is as high as 95%, and the mud cake adhesion coefficient reduction rate is as high as 70%. Both indicators are higher than those of commercially available extreme pressure lubricants, indicating that its lubrication performance is excellent.

[0095] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made by any technician familiar with the field within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A 1-lauryl sulfopropionate derivative extreme pressure lubricant for drilling fluid, characterized in that: The 1-sulfonic acid lauryl alcohol propionate derivative extreme pressure lubricant is a compound represented by the chemical structural formula I; the chemical structural formula I is: Wherein, R1 is an amino group or an amino derivative.

2. The extreme pressure lubricant of 1-lauryl sulfopropionate derivative for drilling fluid according to claim 1, characterized in that: The amino derivative is any one of thiourea, thioformyl dihydrazide, thioacetamide, and glyoxal dithiosemicarbazone.

3. The method for preparing the extreme pressure lubricant of 1-lauryl sulfopropionate derivative for drilling fluid according to claim 1 or 2, characterized in that: The following steps are involved: Step 1, obtaining raw materials: the raw materials include the following components in parts by weight: 24 parts of lauryl acrylate, 10-20 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts of tert-butyl perbenzoate, 10 parts of ferric chloride, 12 parts of triethylamine, 30 parts of thionyl chloride, 40 parts of N,N-dimethylformamide, and 4-30 parts of a substance containing R1; Step 2, preparing intermediate A: 8 parts of deionized water, 12 parts of 1,4-dioxane, 24 parts of lauryl acrylate, 10-20 parts of sodium bisulfite, 10 parts of tert-butyl perbenzoate, and 10 parts of ferric chloride are stirred and mixed uniformly, and then reacted for 20 hours. After the reaction is completed, the intermediate A is dried to obtain intermediate A, which is lauryl 1-sulfopropionate; Step 3, preparing intermediate B: react 32 parts of intermediate A, 30 parts of thionyl chloride, 12 parts of triethylamine, and 20 parts of N,N-dimethylformamide at 10° C. for 5 hours and then dry to obtain intermediate B, wherein intermediate B is 1-lauryl sulfonyl chloride propionate; Step 4, preparing product C: 34 parts of intermediate B, 4 to 30 parts of a substance containing R1, and 20 parts of N,N-dimethylformamide are mixed evenly, reacted in a water bath for 6 hours, and then the solvent is removed to obtain product C. The product C is a compound shown in chemical formula I, that is, an extreme pressure lubricant of 1-sulfonic acid lauryl propionate derivative.

4. The method for preparing the extreme pressure lubricant of 1-lauryl sulfopropionate derivative for drilling fluid according to claim 3, characterized in that: The reaction condition in step 2 is an oxygen-free environment at 50°C.

5. The method for preparing the extreme pressure lubricant of 1-lauryl sulfopropionate derivative for drilling fluid according to claim 3, characterized in that: In step 2, 8 parts of deionized water, 12 parts of 1,4-dioxane, 24 parts of lauryl acrylate, 10 parts of tert-butyl perbenzoate, and 10 parts of ferric chloride are evenly mixed, and then 10 to 20 parts of sodium bisulfite are added, and the mixture is evenly mixed again and reacted for 20 hours.

6. The method for preparing the extreme pressure lubricant of 1-lauryl sulfopropionate derivative for drilling fluid according to claim 3, characterized in that: The substance containing R1 is concentrated ammonia water or thioformyl dihydrazide or thioacetamide or glyoxal dithiosemicarbazone or thiourea.

7. The method for preparing the extreme pressure lubricant of 1-lauryl sulfopropionate derivative for drilling fluid according to claim 3, characterized in that: The specific steps of step 4 are: first, 34 parts of intermediate B and 20 parts of N,N-dimethylformamide are evenly mixed, and then the intermediate B and the N,N-dimethylformamide mixture are slowly added drop by drop into the substance containing R1 using a constant pressure funnel under a 25°C water bath condition, and then reacted in a water bath for 6 hours. After removing the solvent, product C is obtained. The product C is a compound shown in chemical formula I, that is, an extreme pressure lubricant of 1-sulfonic acid lauryl propionate derivative.

8. The method for preparing the extreme pressure lubricant of 1-lauryl sulfopropionate derivative for drilling fluid according to claim 6, characterized in that: The raw materials include the following components in parts by weight: 24 parts of lauryl acrylate, 15 parts of sodium bisulfite, 8 parts of deionized water, 12 parts of 1,4-dioxane, 10 parts of tert-butyl perbenzoate, 10 parts of ferric chloride, 12 parts of triethylamine, 30 parts of thionyl chloride, 40 parts of N,N-dimethylformamide, and 15 parts of a substance containing R1, wherein the substance containing R1 is thioformyl dihydrazide.

9. The use of the 1-lauryl sulfopropionate derivative extreme pressure lubricant for drilling fluid according to claim 1, characterized in that: The 1-lauryl sulfopropionate derivative extreme pressure lubricant is compounded with drilling fluid in the presence of base oil and is used in the oil and gas field drilling industry.

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