CN113528110B - Foam drainage agent for exploitation of antique sulfur-containing natural gas and preparation method thereof - Google Patents
Foam drainage agent for exploitation of antique sulfur-containing natural gas and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a foam drainage agent for exploitation of ancient sulfur-containing natural gas and a preparation method thereof; the foam scrubbing agent comprises the following components in percentage by mass: sulfonated AEO 3 : 50-60%, lauramidopropyl phosphobetaine: 20-30%, coconut oil fatty acid monoethanolamide: 5-10% of soapberry essence: 5-10%, lignosulfonate: 1-4% and the balance of water; the preparation method of the foam scrubbing agent comprises the steps of firstly sulfonating AEO 3 Adding the coconut oil fatty acid monoethanolamide, the soapberry essence, the lignosulfonate and the water into a reaction kettle in sequence, and mixing for the second time to obtain a foam water discharging agent; the invention provides a foam drainage agent with acid resistance, hypersalinity resistance and strong secondary foaming capacity, overcomes the defects of the prior art, and solves the technical problem of foam drainage of an ancient gas well.
Description
Technical Field
The invention relates to the field of natural gas exploitation, in particular to a foam drainage agent for exploitation of antique sulfur-containing natural gas and a preparation method thereof.
Background
The Orthos basin underground ancient gas reservoir development enters an integrated pilot test stage from 2019 through a vertical well evaluation and horizontal well development test stage, the annual contribution of the yield is 1.89 million square, and the yield accounts for 5.8%. By 2021, 93 total wells, 89 production wells, 67 open wells (13 vertical wells and 54 horizontal wells) of ancient gas wells in 4 months, 74.2% open well rate, 96% production time rate, 7.39MPa average casing pressure, 0.0021MPa/d pressure drop rate, 0.97 ten thousand square/day single well yield, 1.78 square/ten thousand square of liquid-gas ratio and 10.1 hundred million square of accumulated gas production.
At present, the pressure and the yield of an ancient gas well are relatively high, 25 gas wells with foam drainage auxiliary liquid drainage are needed, and the number of the gas wells accounts for 37.3 percent of that of production wells. The existing foam row has the following problems:
1. because acid fracturing adopts acid fracturing fluid with lower pH, the flowback rate after gas testing is low, and the lower ancient bed system contains H 2 S, the whole produced liquid is acidic, foaming agents adopted by most of the ancient gas wells at present mainly comprise a composite foam discharging agent compounded by an anionic surfactant and a nonionic surfactant, the foaming performance is greatly influenced by pH, and the method is not suitable for drainage and gas production of the ancient gas wells.
2. The ancient formation water and the ancient formation water have different characteristics, the mineralization degree is high and can reach 3000000mg/L, the formation water components and the fluid properties are different, and the highest mineralization resistance of the foam scrubbing agent used in the current gas field is 200000mg/L, so that the foaming and liquid carrying capacities of the traditional foam scrubbing agent in the formation water are deteriorated.
3. The underground gas well mostly adopts an underground throttler process, and after the foam discharging agent passes through a throttling air nozzle, a defoaming effect can be generated, so that the foam discharging effect is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a foam drainage agent for the exploitation of ancient sulfur-containing natural gas, has strong foaming, foam stabilizing, secondary foaming and liquid carrying capacities in a high-salinity and acidic environment, and solves the technical problem of the foam drainage of ancient gas wells.
The purpose of the invention is realized by the following technical scheme:
a foam drainage agent for exploiting sulfur-containing natural gas in the ancient times comprises the following components in percentage by mass:
sulfonated AEO 3 : 50-60%, lauramidopropyl phosphobetaine: 20-30%, coconut oil fatty acid monoethanolamide: 5-10% of soapberry essence: 5-10%, lignosulfonate: 1-4% and the balance of water.
Preferably, the paint consists of the following components in percentage by mass:
sulfonated AEO 3 :55%, lauramidopropyl phosphobetaine: 25%, coconut oil fatty acid monoethanolamide: 7% of soapberry essence: 7%, lignosulfonate: 3 percent of water and the balance of water.
Preferably, the sulfonated AEO 3 Instead of containing sulfonated AEO 3 Said mixture comprising sulfonated AEO 3 The mixture of (a) was synthesized by the following method:
AEO (ethylene oxide) 3 、HSO 3 NH 2 And adding the catalyst into a reaction kettle according to the mass ratio of 7 3 A mixture of (a);
wherein the reaction temperature is 110-130 ℃, the stirring time is 1.5-3 h, and the stirring speed is 90-110 r/min.
Preferably, the AEO 3 、HSO 3 NH 2 And the mass ratio of the catalyst is 7.
Preferably, the sulfonation reaction temperature is 120 ℃, the stirring time is 2 hours, and the stirring speed is 100 r/min.
Preferably, the catalyst is dimethylformamide or urea.
The invention uses sulfonated AEO 3 Sulfonated AEO with lauramidopropyl phosphobetaine as main agent 3 The characteristics of the nonionic-anionic surfactant are reflected, and the foaming and liquid-carrying capacity is stronger under the condition of mineralization degree; the lauramidopropyl betaine phosphate is characterized by an amphoteric surfactant, is insensitive to the pH value of formation water, and has strong foaming and liquid carrying capacities under the condition of low pH value. Because the invention is applied to a complex ancient sulfur-containing gas well formation water system, the mineralization degree of the formation water is high, the pH value is low, and the interference of condensate oil, methanol, corrosion inhibitor and other substances on the foam discharging agent also exists; coconut oil fatty acid monoethanolamide is introduced as an antifoaming agent, so that the structural stability of the liquid film of the bubbles can be controlled, the surfactant molecules are orderly distributed in the liquid film of the bubbles, and good elasticity and self-repairing performance are given to the foamForce; introducing soapberry essence as a foam stabilizer, embedding dialkyl chain sodium dicarboxylate anion groups on molecular soapberry and saponin plant essence molecular chains to obtain the soapberry essence, wherein the molecules of the soapberry essence have two hydrophilic groups with negative charges, the two hydrophilic groups generate a negative charge enhancement overlapping region, and the higher charge density greatly increases intermolecular attraction, so that a great dissolving effect is generated, molecular layers which are directionally arranged in an interface film are combined very tightly, the film strength is greatly enhanced, and foams are difficult to break; and then lignosulfonate is introduced as a foam regulator to regulate the water content of the foam, and substances with the size of the foam are controlled, so that large bubbles are changed into small bubbles, the foaming agent generates uniform, fine and stable foam substances, the obtained bubbles have low density and high strength, and the fluctuation of the water content of the foam is small.
The second purpose of the invention is to provide a preparation method of the foam drainage agent for exploiting the antique sulfur-containing natural gas, which comprises the following steps:
first sulfonated AEO 3 Adding the coconut oil fatty acid monoethanolamide, the soapberry essence, the lignosulfonate and the water into a reaction kettle in sequence, and mixing for the second time to obtain the foam water discharging agent.
Preferably, during the first mixing: the stirring speed is 120-180 r/min, and the stirring time is 1.8-2.2 h; in the second mixing process: the stirring speed is 120-180 r/min, the stirring time is 1.8-2.2 h, and the temperature in the preparation process is 38-42 ℃.
Preferably, in the first mixing process: the stirring speed is 150r/min, and the stirring time is 2h; in the second mixing process: the stirring speed is 150r/min, the stirring time is 2h, and the temperature in the preparation process is 40 ℃.
The beneficial effects of the invention are:
1. the invention fills the vacancy of the foam drainage agent of the ancient sulfur-containing natural gas well, and solves the technical problem of poor foaming performance under the conditions of high mineralization and low pH value.
2. The foam is fine and smooth, the diameter is small, the foam can quickly pass through the underground throttler, secondary foaming is realized at the rear end of the throttler, and the influence of the underground throttler on the performance of the foam scrubbing agent is overcome.
3. The invention provides a method for preparing sulfonated AEO 3 The preparation process is simple, does not produce any pollution, and greatly improves the AEO 3 And the prepared sulfonated AEO 3 The mixture can reach extremely high conversion rate, and can reach extremely high purity requirement without independent purification; the antique foam-scrubbing agent prepared by taking the raw material as well as AEO 3 The performance of the antique foam-drain agent prepared from the raw materials has no obvious difference, and the antique foam-drain agent plays a great role in foaming, foam stabilization and liquid carrying rate of the foam-drain agent.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a graph showing the effect of the ancient foam-scrubbing agent in the well X;
Detailed Description
The technical solutions of the present invention are described in further detail below with reference to examples, but the scope of the present invention is not limited to the following.
1. Examples of the embodiments
As shown in figure 1, 50-60 percent of sulfonated AEO is calculated by mass percent 3 And 20-30% of lauramidopropyl phosphobetaine, then sequentially adding 5-10% of coconut oil fatty acid monoethanolamide, 5-10% of sapindus mukorossi essence, 1-4% of lignosulfonate and water, and mixing for the second time to obtain the foam water discharging agent. And finally, carrying out foaming, foam stabilizing, secondary foaming and liquid carrying capacity testing on the prepared foam drainage agent.
The specific implementation mode is as follows:
example 1
S1-containing sulfonated AEO 3 Synthesis of the mixture of (a): AEO is added 3 、HSO 3 NH 2 And urea are added into a reaction kettle according to the mass ratio of 7 3 A mixture of (a);
wherein the reaction temperature is 120 ℃, the stirring time is 2h, and the stirring speed is 100 r/min;
s2: firstly, 55 percent of sulfonated AEO is added 3 The mixture and 25% of lauramidopropyl phosphobetaine are added into a reaction kettle for first mixing, then 7% of coconut monoethanol amide, 7% of sapindus mukorossi essence, 3% of lignosulfonate and 3% of water are sequentially added into the reaction kettle for second mixing, and the foam water discharging agent is obtained.
Wherein, in the first mixing process: the stirring speed is 150r/min, and the stirring time is 2h; in the second mixing process: the stirring speed is 150r/min, and the stirring time is 2h; the temperature during the preparation was 40 ℃.
Example 2
S1-containing sulfonated AEO 3 Synthesis of the mixture of (a): AEO (ethylene oxide) 3 、HSO 3 NH 2 And urea are added into a reaction kettle according to the mass ratio of 7; wherein the reaction temperature is 120 ℃, the stirring time is 2h, and the stirring speed is 100 r/min;
s2: firstly, 55 percent of sulfonated AEO is added 3 The mixture and 25% of lauramidopropyl betaine phosphate are added into a reaction kettle for the first mixing, then 7% of coconut monoethanolamide, 7% of sapindus mukorossi essence, 3% of lignosulfonate and 3% of water are sequentially added into the reaction kettle for the second mixing, and the foam water discharging agent is obtained.
Wherein, in the first mixing process: the stirring speed is 150r/min, and the stirring time is 2h; in the second mixing process: the stirring speed is 150r/min, and the stirring time is 2h; the temperature during the preparation was 40 ℃.
Example 3
S1-containing sulfonated AEO 3 Synthesis of the mixture of (a): AEO (ethylene oxide) 3 、HSO 3 NH 2 And urea are added into a reaction kettle according to the mass ratio of 7 3 A mixture of (a); wherein the reaction temperatureStirring for 2h at 120 ℃, and stirring speed of 100 r/min;
s2: firstly, 55 percent of sulfonated AEO is added 3 The mixture and 25% of lauramidopropyl phosphobetaine are added into a reaction kettle for first mixing, then 7% of coconut monoethanol amide, 7% of sapindus mukorossi essence, 3% of lignosulfonate and 3% of water are sequentially added into the reaction kettle for second mixing, and the foam water discharging agent is obtained.
Wherein, in the first mixing process: the stirring speed is 150r/min, and the stirring time is 2h; in the second mixing process: stirring at 150r/min for 2h; the temperature during the preparation was 40 ℃.
Example 4
S1-containing sulfonated AEO 3 Synthesis of the mixture of (a): AEO (ethylene oxide) 3 、HSO 3 NH 2 And dimethylformamide are added into the reaction kettle according to the mass ratio of 7;
wherein the reaction temperature is 110 ℃, the stirring time is 3h, and the stirring speed is 110 r/min;
s2: firstly, 55 percent of sulfonated AEO is added 3 The mixture and 25% of lauramidopropyl betaine phosphate are added into a reaction kettle for the first mixing, then 7% of coconut monoethanolamide, 7% of sapindus mukorossi essence, 3% of lignosulfonate and 3% of water are sequentially added into the reaction kettle for the second mixing, and the foam water discharging agent is obtained.
Wherein, in the first mixing process: the stirring speed is 150r/min, and the stirring time is 2h; in the second mixing process: the stirring speed is 150r/min, and the stirring time is 2h; the temperature during the preparation was 40 ℃.
Example 5
S1-containing sulfonated AEO 3 Synthesis of the mixture of (a): AEO (ethylene oxide) 3 、HSO 3 NH 2 And dimethylformamide are added into a reaction kettle according to the mass ratio of 7 3 A mixture of (a); wherein the reaction temperature is 120 ℃, the stirring time is 2h, and the stirring speed is 100 r/min;
s2: firstly, 55 percent of sulfonated AEO is added 3 The mixture and 25% of lauramidopropyl betaine phosphate are added into a reaction kettle for the first mixing, then 7% of coconut monoethanolamide, 7% of sapindus mukorossi essence, 3% of lignosulfonate and 3% of water are sequentially added into the reaction kettle for the second mixing, and the foam water discharging agent is obtained.
Wherein, in the first mixing process: the stirring speed is 150r/min, and the stirring time is 2h; in the second mixing process: stirring at 150r/min for 2h; the temperature during the preparation was 40 ℃.
Example 6
S1-containing sulfonated AEO 3 Synthesis of the mixture of (a): AEO (ethylene oxide) 3 、HSO 3 NH 2 And dimethylformamide are added into a reaction kettle according to the mass ratio of 7 3 A mixture of (a); wherein the reaction temperature is 130 ℃, the stirring time is 1.5h, and the stirring speed is 90 r/min;
s2: based on the mass percentage, firstly 55 percent of sulfonated AEO 3 The mixture and 25% of lauramidopropyl phosphobetaine are added into a reaction kettle for first mixing, then 7% of coconut monoethanol amide, 7% of sapindus mukorossi essence, 3% of lignosulfonate and 3% of water are sequentially added into the reaction kettle for second mixing, and the foam water discharging agent is obtained.
Wherein, in the first mixing process: the stirring speed is 150r/min, and the stirring time is 2h; in the second mixing process: the stirring speed is 150r/min, and the stirring time is 2h; the temperature during the preparation was 40 ℃.
Example 7
S1: containing sulfonated AEO 3 Synthesis of the mixture of (a): AEO is added 3 、HSO 3 NH 2 And dimethylformamide are added into the reaction kettle according to the mass ratio of 7 3 A mixture of (a); wherein the reaction temperature is 110 ℃, the stirring time is 3h, and the stirring speed is 110 r/min;
s2, firstly, 50 percent of sulfonated AEO is added by mass 3 The mixture and 30% of lauramidopropyl betaine phosphate are added into a reaction kettle for the first mixing, then 10% of coconut monoethanolamide, 5% of sapindus mukorossi essence, 4% of lignosulfonate and 1% of water are sequentially added into the reaction kettle for the second mixing, and the foam water discharging agent is obtained.
Wherein, in the first mixing process: the stirring speed is 150r/min, and the stirring time is 2h; in the second mixing process: the stirring speed is 150r/min, and the stirring time is 2h; the temperature during the preparation was 40 ℃.
Example 8
S1: containing sulfonated AEO 3 Synthesis of the mixture of (a): AEO (ethylene oxide) 3 、HSO 3 NH 2 And dimethylformamide are added into the reaction kettle according to the mass ratio of 7; wherein the reaction temperature is 110 ℃, the stirring time is 3h, and the stirring speed is 110 r/min;
s2: based on the mass percentage, firstly 55 percent of sulfonated AEO 3 The mixture and 25% of lauramidopropyl phosphobetaine are added into a reaction kettle for first mixing, then 7% of coconut monoethanol amide, 7% of sapindus mukorossi essence, 3% of lignosulfonate and 3% of water are sequentially added into the reaction kettle for second mixing, and the foam water discharging agent is obtained.
Wherein, in the first mixing process: the stirring speed is 150r/min, and the stirring time is 2h; in the second mixing process: stirring at 150r/min for 2h; the temperature during the preparation was 40 ℃.
Example 9
S1: containing sulfonated AEO 3 Synthesis of the mixture of (a): AEO (ethylene oxide) 3 、HSO 3 NH 2 And dimethylformamide are added into the reaction kettle according to the mass ratio of 7 3 A mixture of (a); wherein the reaction temperature is 110 ℃, the stirring time is 3h, and the stirring speed is 110 r/min;
s2: according to the mass percentage, 60 percent of sulfonated AEO 3 The mixture and 20% of lauramidopropyl betaine phosphate are added into a reaction kettle for the first mixing, then 5% of coconut monoethanolamide, 10% of sapindus mukorossi essence, 1% of lignosulfonate and 4% of water are sequentially added into the reaction kettle for the second mixing, and the foam water discharging agent is obtained.
Wherein, in the first mixing process: the stirring speed is 150r/min, and the stirring time is 2h; in the second mixing process: stirring at 150r/min for 2h; the temperature during the preparation was 40 ℃.
Example 10
S1: containing sulfonated AEO 3 Synthesis of the mixture of (a): AEO (ethylene oxide) 3 、HSO 3 NH 2 And urea are added into a reaction kettle according to the mass ratio of 7 3 A mixture of (a); wherein the reaction temperature is 110 ℃, the stirring time is 2h, and the stirring speed is 110 r/min;
s2: firstly, 55 percent of sulfonated AEO is added 3 The mixture and 25% of lauramidopropyl betaine phosphate are added into a reaction kettle for the first mixing, then 7% of coconut monoethanolamide, 7% of sapindus mukorossi essence, 3% of lignosulfonate and 3% of water are sequentially added into the reaction kettle for the second mixing, and the foam water discharging agent is obtained.
Wherein, in the first mixing process: the stirring speed is 120r/min, and the stirring time is 2.2h; in the second mixing process: the stirring speed is 120r/min, and the stirring time is 2.2h; the temperature during the preparation was 42 ℃.
Example 11
S1: containing sulfonated AEO 3 Synthesis of the mixture of (a): AEO (ethylene oxide) 3 、HSO 3 NH 2 And urea are added into a reaction kettle according to the mass ratio of 7 3 A mixture of (a); wherein the reaction temperature is 110 ℃, the stirring time is 2h, and the stirring speed is 110 r/min;
s2: adding 55 mass percent of mixture containing sulfonated AEO3 and 25 mass percent of lauramidopropyl phosphobetaine into a reaction kettle, mixing for the first time, then sequentially adding 7 mass percent of coconut monoethanolamide, 7 mass percent of sapindus essence, 3 mass percent of lignosulfonate and 3 mass percent of water into the reaction kettle, and mixing for the second time to obtain the foam water discharging agent.
Wherein, in the first mixing process: stirring at 180r/min for 1.8h; in the second mixing process: stirring at 180r/min for 1.8h; the temperature during the preparation was 38 ℃.
Example 12
S1: containing sulfonated AEO 3 Synthesis of the mixture of (a): AEO (ethylene oxide) 3 、HSO 3 NH 2 And urea are added into a reaction kettle according to the mass ratio of 7; wherein the reaction temperature is 110 ℃, the stirring time is 2h, and the stirring speed is 110 r/min;
s2: firstly, 55 percent of sulfonated AEO is added 3 The mixture and 25% of lauramidopropyl betaine phosphate are added into a reaction kettle for the first mixing, then 7% of coconut monoethanolamide, 7% of sapindus mukorossi essence, 3% of lignosulfonate and 3% of water are sequentially added into the reaction kettle for the second mixing, and the foam water discharging agent is obtained.
Wherein, in the first mixing process: stirring at 150r/min for 2h; in the second mixing process: the stirring speed is 150r/min, and the stirring time is 2h; the temperature during the preparation was 40 ℃.
Example 13
Sulfonated AEO as described in this example 3 Is sulfonated AEO prepared in any way and purified 3 。
Firstly, according to the mass percentage, sulfonated AEO 3 Adding 30% of lauramidopropyl phosphobetaineMixing in a kettle for the first time, then sequentially adding 10% of coconut monoethanolamide, 5% of soapberry essence, 4% of lignosulfonate and 1% of water into the reaction kettle, and mixing for the second time to obtain the foam drainage agent.
Wherein, in the first mixing process: stirring at 150r/min for 2h; in the second mixing process: the stirring speed is 150r/min, and the stirring time is 2h; the temperature during the preparation was 40 ℃.
Example 14
Sulfonated AEO as described in this example 3 Is sulfonated AEO prepared in any way and purified 3 。
Firstly, 55 percent of sulfonated AEO by mass 3 Adding 25% of lauramidopropyl betaine phosphate into a reaction kettle, mixing for the first time, then adding 7% of coconut monoethanol amide, 7% of sapindus mukorossi essence, 3% of lignosulfonate and 3% of water into the reaction kettle in sequence, and mixing for the second time to obtain the foam water discharging agent.
Wherein, in the first mixing process: stirring at 150r/min for 2h; in the second mixing process: the stirring speed is 150r/min, and the stirring time is 2h; the temperature during the preparation was 40 ℃.
Example 15
Sulfonated AEO as described in this example 3 Is sulfonated AEO prepared in any way and purified 3 。
Firstly, 60 percent of sulfonated AEO is calculated by mass percent 3 Adding 20% of lauramidopropyl betaine phosphate into a reaction kettle, mixing for the first time, then sequentially adding 5% of coconut monoethanolamide, 10% of soapberry essence, 1% of lignosulfonate and 4% of water into the reaction kettle, and mixing for the second time to obtain the foam water discharging agent.
Wherein, in the first mixing process: the stirring speed is 150r/min, and the stirring time is 2h; in the second mixing process: the stirring speed is 150r/min, and the stirring time is 2h; the temperature during the preparation was 40 ℃.
Example 16
Sulfonated AEO as described in this example 3 Is sulfonated AEO prepared in any way and purified 3 。
Firstly, 55 percent of sulfonated AEO by mass 3 Adding 25% of lauramidopropyl betaine phosphate into a reaction kettle, mixing for the first time, then adding 7% of coconut monoethanol amide, 7% of sapindus mukorossi essence, 3% of lignosulfonate and 3% of water into the reaction kettle in sequence, and mixing for the second time to obtain the foam water discharging agent.
Wherein, in the first mixing process: the stirring speed is 120r/min, and the stirring time is 2.2h; in the second mixing process: the stirring speed is 120r/min, and the stirring time is 2.2h; the temperature during the preparation was 42 ℃.
Example 17
Sulfonated AEO as described in this example 3 Is sulfonated AEO prepared in any way and purified 3 。
Firstly, 55 percent of sulfonated AEO by mass 3 Adding 25% of lauramidopropyl betaine phosphate into a reaction kettle, mixing for the first time, then adding 7% of coconut monoethanol amide, 7% of sapindus mukorossi essence, 3% of lignosulfonate and 3% of water into the reaction kettle in sequence, and mixing for the second time to obtain the foam water discharging agent.
Wherein, in the first mixing process: stirring at 180r/min for 1.8h; in the second mixing process: stirring at 180r/min for 1.8h; the temperature during the preparation was 38 ℃.
Example 18
Based on example 2, 55% of sulfonated AEO 3 The mixture of (3) was replaced with 55% water and the other conditions were unchanged.
Example 19
On the basis of example 2, 25% of lauramidopropyl phosphobetaine was replaced by 25% of water, and the other conditions were unchanged.
Example 20
On the basis of example 2, 7% of coconut monoethanolamide was replaced by 7% of water, and the other conditions were not changed.
Example 21
On the basis of example 2, 7% of the oil soapberry essence is replaced by 7% of water, and other conditions are not changed.
Example 22
On the basis of example 2, 3% of lignosulfonate was replaced by 3% of water, the other conditions being unchanged.
2. Test detection and data analysis.
(I) containing sulfonated AEO 3 The data and conditions during the synthesis of the mixture of (a).
1. The optimal data and conditions are selected through experiments.
The following are variables in the experiment
Sulfonation reagent: oleum, sulfur trioxide, chlorosulfonic acid, and sulfamic acid;
AEO 3 the dosage relation of the sulfonating agent is as follows: AEO 3 The mass ratio of the sulfonating agent to the water is arbitrary;
the kind of the catalyst: n-methyl pyrrolidone, p-toluenesulfonic acid, dimethylformamide, urea and sodium hypophosphite;
the dosage of the catalyst is as follows: AEO 3 In any mass ratio with the catalyst;
reaction temperature: any temperature;
reaction time: at any time;
performing a plurality of experiments on the data and the conditions to finally obtain the optimal conditions, namely the optimal sulfonating reagent is sulfamic acid, and the optimal dosage of the sulfamic acid is AEO 3 ：HSO 3 NH 2 = 7; the most preferred catalyst is urea; the optimum catalyst dosage is AEO 3 : urea is 1; the optimal temperature is 120 ℃; the optimal reaction time is 2h.
2. The following are tables selected from the optimization experiments described above, i.e., when one of the variables is changed and the other variables are all optimally selected, the changed variable is to the synthetic experiment or AEO 3 The effect of conversion.
(1) Sulphonation reagent
TABLE 1-1 sulfonation reagents comparison Table
Comprehensively considering the factors of production cost, environmental protection and the like, and preferably selecting sulfamic acid (HSO) from the comparison of the reagents 3 NH 2 ) As a sulfonating agent. The reaction equation is as follows:
the mechanism of the above reaction is that sulfamic acid first forms S0 3 And NH 3 Then reacting with active hydroxyl:
sulfamic acid is a very mild sulfonating agent because of the low electropositivity on the sulfur atom and the reduced electrophilicity due to the electron donating property of the amino group in the sulfamic acid molecule.
(2) The kind and amount of catalyst
(1) Selection of AEO 3 ：HSO 3 NH 2 : catalyst =7, reaction at 120 ℃ for 2h, and the conversion of the sulfation reaction with the addition of a different catalyst was examined.
Tables 1-2 test of the Effect of catalyst types on conversion
As is clear from tables 1-2, AEO was observed when dimethylformamide or urea was selected as the catalyst among the above catalysts 3 The conversion rate is relatively high, the effect is good, but the urea has wide source and low price. Therefore, urea is preferredAs a catalyst for sulfation.
(2) Selection of AEO 3 ：HSO 3 NH 2 =7, at 120 ℃ for 2h, and the conversion of sulfation was examined when the amount of urea was different.
Tables 1-3 test of the Effect of catalyst amount on conversion
As can be seen from tables 1-3, when AEO 3 : urea =1:0.06-0.1, AEO 3 The conversion rate is relatively high, and when excessive urea is used in the reaction, the conversion rate of the reaction is improved to a certain extent but the improvement range is not obvious, so that AEO 3 The optimal use ratio of urea to urea is 1.07.
(3) Amount of sulfamic acid used
AEO in the synthesis process 3 The molar ratio to sulfamic acid is also an important factor affecting the conversion of the product. Selection of AEO 3 : urea = l:0.07, reacted at 120 ℃ for 2h, and AEO was examined 3 The influence on the conversion of the sulfonation reaction at different ratios to sulfamic acid.
Tables 1-4 test of the Effect of the reaction raw Material feed ratio on the conversion
As can be seen from tables 1-4, when AEO 3 ：HSO 3 NH 2 AEO when =7 3 The conversion rate is relatively high, and when the excessive sulfamic acid is used in the reaction, although the conversion rate of the reaction can be improved to a certain extent, the improvement range is not obvious, so that AEO 3 The optimal ratio of the feed to the sulfamic acid is 7.
(4) Determination of the reaction temperature
Selection of AEO 3 ：HSO 3 NH 2 : urea =7, 0.49, reaction time 2h, and investigation of the effect of different reaction temperatures on product conversion。
Tables 1-5 test of the Effect of reaction temperature on conversion
As can be seen from tables 1-5, when the reaction temperature is greater than 110 ℃, AEO 3 Is greater than 80%; when the reaction temperature is more than 120 ℃, AEO 3 The conversion of (a) is greater than 90%. But as the temperature continues to rise, AEO 3 The conversion rate is not improved obviously. Thus, AEO at temperatures of 110 to 130 ℃ 3 The conversion is relatively high and the optimum reaction temperature is 120 ℃.
(5) Determination of reaction time
Selection of AEO 3 ：HSO 3 NH 2 : urea =7, reaction temperature 120 ℃, the effect of different reaction times on the sulfation reaction conversion was examined.
Tables 1-6 test of the Effect of reaction time on conversion
As can be seen from tables 1 to 6, AEO was observed when the reaction time was 1.5 to 3 hours 3 The conversion rate is relatively high and is increased rapidly along with the reaction, when the reaction time is 2-3 h, the conversion rate is up to more than 90 percent, the conversion rate is not obviously increased along with the continuous reaction, and when the reaction time is more than 3h, because of AEO 3 It is easily decomposed at high temperature and other side reactions occur, resulting in a decrease in conversion. Therefore, the optimum reaction time is 2h.
(II) foam drainage agent Performance test
1. Foaming and liquid carrying performance test
(1) Testing indexes are as follows: foaming performance and liquid carrying rate
(2) Test method
a. Measurement of foaming and foam stabilizing Capacity (measured by Roche foam tester)
Respectively weighing 1.20g of the foam discharging agent prepared in the embodiments 1 to 22 and the conventional foam discharging agent in a 1000mL beaker, adding a mineralization degree water sample to dilute to 400mL to obtain a sample liquid to be detected with the foam discharging agent concentration of 0.003g/mL, and heating the sample liquid to be detected in a constant-temperature water bath to 70 +/-1 ℃ for later use.
Preheating the Roche foam instrument in a constant-temperature water bath, keeping the temperature at 70 +/-1 ℃, transferring 50mL of sample liquid to be tested by using a 200mL transfer pipette, putting down the sample liquid along the tube wall of the Roche foam instrument to flush the tube wall, closing a valve at the lower end of the Roche foam instrument after the flush liquid flows out, then transferring 50mL of sample liquid to be tested, putting down along the tube wall of the Roche foam instrument to form a liquid level at the bottom, transferring 200mL of sample liquid to be tested by using the transfer pipette, putting the sample liquid to be tested at the central position of the upper end of the Roche foam instrument, vertically putting down aiming at the liquid level, immediately recording the rising height of foam in the Roche foam instrument after the sample liquid to be tested is put out, and obtaining the foaming capacity of the experimental sample. And recording the foam height after 5min, namely the foam stabilizing capacity of the experimental sample.
b. Fluid carrying capacity test
Weighing 1.20g of the foam-drain agent prepared in the examples 1 to 22 and the conventional foam-drain agent in a 1000mL beaker respectively, adding a mineralization degree water sample to dilute to 400mL to obtain a sample liquid to be detected with the foam-drain agent concentration of 0.003g/mL, and heating the sample liquid to be detected in a constant-temperature water bath to 70 +/-1 ℃ for later use.
The constant-temperature water bath preheats the liquid carrying instrument, the temperature is kept at 70 +/-1 ℃, the inflator pump is started, 8L of gas is filled in each minute, the preheated sample liquid to be tested (namely the total volume of the sample liquid) is poured into the constant-temperature liquid carrying instrument, the solution is foamed, the liquid carried out is collected by the liquid collector until no foam is carried out, and the volume of the carried liquid is measured (the liquid carrying rate = the volume of the carried liquid/the total volume of the sample liquid x 100%), namely the liquid carrying capacity of the experimental sample.
(3) Test results
Table 2-1: test results of foaming capacity, foam stabilizing capacity and liquid carrying rate of foam discharging agent
As is clear from Table 2-1, the products of examples 1 to 17The foaming and liquid carrying capacities of the prepared foam scrubbing agent (namely the antique foam scrubbing agent) under the conditions of high mineralization degree and low pH are hardly influenced, wherein the foaming, foam stabilizing and liquid carrying capacities of the antique foam scrubbing agents prepared in the examples 2 and 14 are the best; the conventional foam scrubbing agent is reduced along with the reduction of the pH value of the mineralized water, and almost loses foaming and liquid carrying capacities particularly after the pH value is lower than 5; in addition, it is understood from the foam detergents prepared in examples 18 to 22 that the foam detergents prepared by reducing any one of the components of the present invention are reduced as the pH value of the mineralized water is lowered, and particularly, the foam detergent almost loses foaming and liquid-carrying ability after the pH value is lower than 5; by comparing examples 7 to 11 with examples 13 to 17, it is clear that purified sulfonated AEO is used 3 The antique foam-scrubbing agent prepared from the raw materials is prepared by the method comprising sulfonated AEO 3 The antique foam scrubbing agent prepared by taking the mixture as the raw material has more outstanding effects on the aspects of foaming, foam stabilization and liquid carrying capacity, but the total capacities of the foaming agent and the foam stabilization and the liquid carrying capacity are not greatly different, and the antique foam scrubbing agent containing sulfonated AEO can be embodied 3 The superiority of the synthesis process of the mixture.
2. Secondary foaming Performance test
Weighing 1.20g of the foam-drain agent prepared in the examples 1 to 22 and the conventional foam-drain agent in a 1000mL beaker respectively, adding a mineralization degree water sample to dilute to 400mL to obtain a sample liquid to be detected with the foam-drain agent concentration of 0.003g/mL, and heating the sample liquid to be detected in a constant-temperature water bath to 70 +/-1 ℃ for later use.
Preheating a Roche foam meter in a thermostatic water bath, keeping the temperature at 70 +/-1 ℃, transferring 50mL of sample liquid to be tested by using a 200mL pipette, putting down the wall of a flushing pipe along the wall of the Roche foam meter, closing a valve at the lower end of the Roche foam meter after the flushing liquid flows out, then transferring 50mL of the sample liquid to be tested, putting down along the wall of the Roche foam meter, forming a liquid level at the bottom, transferring 200mL of the sample liquid to be tested by using the pipette, putting the sample liquid to be tested at the central position of the upper end of the Roche foam meter, vertically putting down by aiming at the liquid level, immediately recording the rising height of foam in the Roche foam meter after the sample liquid is put out, and obtaining the foaming capacity of the experimental sample.
And (4) collecting all liquid samples after the foaming capacity test, standing for 24 hours (contact with the defoaming agent is forbidden), and determining according to a foaming capacity test method to obtain the secondary foaming capacity of the experimental sample.
TABLE 2-2 foam remover Secondary foaming Capacity test results
As can be seen from the table 2-2, the secondary foaming capacity of the conventional foam scrubbing agent is lower than 50mm under the conditions of high mineralization degree and low pH value; the secondary foaming capacity of the ancient foam discharging agent prepared by the invention is hardly influenced and is higher than 150mm; the secondary bubble capacity of the foam scrubbing agent prepared by the embodiments 18-22 is equivalent to that of the conventional foam scrubbing agent, and both the capacities are lower; as is clear from the comparison between examples 7 to 11 and examples 13 to 17, the sulfonated AEO-containing compound was used 3 The mixture of (A) is used as raw material to prepare the antique foam-scrubbing agent, compared with the foam-scrubbing agent prepared by using the mixture containing sulfonated AEO 3 The antique foam-scrubbing agent prepared by taking the mixture as the raw material has equivalent effect on the aspect of secondary foaming capacity and extremely strong effect, and shows that the antique foam-scrubbing agent contains sulfonated AEO 3 The superiority of the synthesis process of the mixture.
3. Liquid carrying capacity test in downhole choke demonstration device
4.50g of the foam discharging agent prepared in the embodiments 1 to 22 and the conventional foam discharging agent are respectively weighed in a 5L liquid storage barrel, 250g/L of mineralization degree water sample is added to be diluted to 1500mL, and the sample liquid to be detected with the concentration of the medicament of 0.003g/mL (namely the total volume of the sample liquid) is obtained. And starting a metering pump, and completely pumping the prepared sample liquid into a vertical well demonstration instrument with a restrictor. Starting an air compressor, introducing 16L/min of gas to foam the solution, collecting the liquid brought out by a liquid collector until no foam is brought out, and measuring the volume of the liquid brought out (liquid carrying rate = volume of the liquid brought out/total volume of the sample liquid x 100%), thereby obtaining the liquid carrying capacity of the experimental sample.
Because the demonstration device simulates the state of the on-site shaft, a pocket is arranged. Therefore, in calculation, the total volume of the sample liquid is 1000mL in terms of the volume of the liquid above the gas source port through the actual test.
Tables 2 to 3: liquid carrying capacity test result of foam scrubbing agent in underground choke demonstrating device
As can be seen from tables 2-3, the liquid carrying state of the conventional foam discharging agent in the underground throttling demonstration device is unstable and the slip is serious, and the liquid carrying rate is only 39.0 percent; the foam discharging agents prepared in the examples 18 to 22 have unstable liquid carrying state and serious slippage in the underground throttling demonstration device, and the liquid carrying rate is equivalent to that of the conventional foam discharging agent, while the ancient foam discharging agent in the invention has stable liquid carrying state in the underground throttling demonstration device, and the liquid carrying rate is as high as 81.3%; from the comparison of examples 7 to 11 and examples 13 to 17, it is clear that the purified sulfonated AEO was used 3 The antique foam-scrubbing agent prepared from the raw materials is prepared by the method comprising sulfonated AEO 3 The mixture of the (A) and (B) is a little better than the ancient foam-scrubbing agent prepared from the raw material in the aspect of liquid-carrying capacity, but the two are not very different and both have very strong liquid-carrying capacity, which shows that the ancient foam-scrubbing agent contains sulfonated AEO 3 The superiority of the synthesis process of the mixture.
4. The ancient foam-drain agent was tested in the large flat X well (the test effect is shown in FIG. 2).
Statistics are carried out on production data from 5 months, 11 days to 17 days in 2021, the average oil pressure of the well production is 1.43MPa, the casing pressure is 5.69MPa, and the average daily gas production is 1823 m 3 D, the well is unstable in production, cannot carry liquid by itself, needs to frequently take pressure reduction and liquid carrying, particularly 5 months for 16 to 17 days, and has the gas production rate of less than 1000m 3 And d. The well bore has serious effusion and is in a water flooded state.
In 2021, 5 and 18 days, the ancient foam discharging agent prepared in example 7 is added to the well for the first time, the serious effusion of the well bore is considered and is in a water flooded state, the filling concentration is properly improved, 105L of mixed liquid of the ancient foam discharging agent and water is added from an oil pipe at the well head (wherein the volume ratio of the ancient foam discharging agent to the water is 1 3 0.54 m of liquid production 3 。
After 3 consecutive days of 5 months and 18 to 20 days, 105L of mixed liquid of the ancient foam discharging agent and water is injected from the wellhead oil (wherein, the volume ratio of the ancient foam discharging agent to the water is 1After foam drainage, the gas well production is obviously improved, and the accumulated gas production in three days is 12743 m 3 Cumulative liquid production 2.05 m 3 。
The total volume of 55L of mixed liquid of the ancient foam discharging agent and water is sleeved and injected at the wellhead every day by using the wellhead automatic injection device within 5 months and 21-6 months and 15 days (wherein the volume ratio of the ancient foam discharging agent to the water is 1: 10), the gas well production is stable, and the daily average gas production is 3244 m 3 Average daily liquid production of 0.90 m 3 。
Table 2-4 comparative table of test effect
As can be seen from tables 2-4, the daily average gas production and daily average liquid production of the antique foam-discharging agent prepared by the invention are far greater than those of the conventional foam-discharging agent. Since the antique foam-drain agent prepared in example 7 is not the optimal choice as compared with other antique foam-drain agents, the antique foam-drain agent can exert a good effect while the other antique foam-drain agents can exert a better effect.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein, but is not intended to be foreclosed in other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the invention as expressed in the above teachings or as known in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A foam drainage agent for exploiting the antique sulfur-containing natural gas is characterized by comprising the following components in percentage by mass:
sulfonated AEO 3 : 50-60%, lauramidopropyl phosphobetaine: 20-30%, coconut oil fatty acid monoethanolamide: 5-10% of soapberry essence: 5-10%, lignosulfonate: 1-4% and the balance of water;
the sapindus mukorossi essence is obtained by embedding a dialkyl chain sodium dicarboxylate anion group on molecular chains of molecular sapindus mukorossi and saponin plant essence.
2. The foam drainage agent for developing ancient sulfur-containing natural gas according to claim 1, which is characterized by comprising the following components in percentage by mass:
sulfonated AEO 3 :55%, lauramidopropyl phosphobetaine: 25%, coconut oil fatty acid monoethanolamide: 7% of soapberry essence: 7%, lignosulfonate: 3 percent of water and the balance of water.
3. The foam drainage agent for developing ancient sour natural gas according to claim 1, wherein the sulfonated AEO is 3 Instead of containing sulfonated AEO 3 Said mixture comprising sulfonated AEO 3 The mixture of (a) was synthesized by the following method:
AEO (ethylene oxide) 3 、HSO 3 NH 2 And adding the catalyst into a reaction kettle according to the mass ratio of 7 3 A mixture of (a);
wherein the reaction temperature is 110-130 ℃, the stirring time is 1.5-3 h, and the stirring speed is 90-110 r/min.
4. The foam drainage agent for developing ancient sour natural gas according to claim 3, wherein the AEO is 3 、HSO 3 NH 2 And the mass ratio of the catalyst is 7.
5. The foam drainage agent for exploitation of antique sulfur-containing natural gas according to claim 3, wherein the sulfonation reaction temperature is 120 ℃, the stirring time is 2h, and the stirring speed is 100 r/min.
6. The foam drainage agent for ancient sour natural gas exploitation according to claim 3, wherein the catalyst is dimethylformamide or urea.
7. A method for preparing the foam drainage agent for the exploitation of antique sour natural gas, which is used for preparing the foam drainage agent for the antique sour natural gas according to any one of claims 1 to 6, and the preparation method comprises the following steps:
first sulfonated AEO 3 Adding the coconut oil fatty acid monoethanolamide, the soapberry essence, the lignosulfonate and the water into a reaction kettle in sequence, and mixing for the second time to obtain the foam water discharging agent.
8. The method for preparing the foam drainage agent for developing ancient sulfur-containing natural gas according to claim 7, wherein in the first mixing process: the stirring speed is 120-180 r/min, and the stirring time is 1.8-2.2 h; in the second mixing process: the stirring speed is 120-180 r/min, and the stirring time is 1.8-2.2 h; the temperature in the preparation process is 38-42 ℃.
9. The method for preparing the foam drainage agent for exploitation of antique sour natural gas according to claim 8, wherein in the first mixing process: the stirring speed is 150r/min, and the stirring time is 2h; in the second mixing process: the stirring speed is 150r/min, and the stirring time is 2h; the temperature during the preparation was 40 ℃.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059822A (en) * | 2011-10-18 | 2013-04-24 | 中国石油化工股份有限公司 | Foaming agent for forming CO2 foams and preparation method thereof |
| CN104892467A (en) * | 2015-06-16 | 2015-09-09 | 眉山华瑞科技开发有限责任公司 | Synthetic method for alcohol ether sulfate salt foaming agent |
| CN104893702A (en) * | 2015-04-28 | 2015-09-09 | 中国石油天然气股份有限公司 | Foam scrubbing agent used for water drainage and gas collection of water-production gas well containing H2S gas |
| CN106753308A (en) * | 2016-12-28 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of oil resistant low-water-content foaming agent |
| CN112266774A (en) * | 2020-10-20 | 2021-01-26 | 中国石油天然气股份有限公司 | Anti-freezing type corrosion-inhibition bubble-exclusion scale inhibitor and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105199700A (en) * | 2015-10-13 | 2015-12-30 | 西南石油大学 | Oligomeric betanine type foam drainage agent and preparation method |
-
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- 2021-08-24 CN CN202110985010.5A patent/CN113528110B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059822A (en) * | 2011-10-18 | 2013-04-24 | 中国石油化工股份有限公司 | Foaming agent for forming CO2 foams and preparation method thereof |
| CN104893702A (en) * | 2015-04-28 | 2015-09-09 | 中国石油天然气股份有限公司 | Foam scrubbing agent used for water drainage and gas collection of water-production gas well containing H2S gas |
| CN104892467A (en) * | 2015-06-16 | 2015-09-09 | 眉山华瑞科技开发有限责任公司 | Synthetic method for alcohol ether sulfate salt foaming agent |
| CN106753308A (en) * | 2016-12-28 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of oil resistant low-water-content foaming agent |
| CN112266774A (en) * | 2020-10-20 | 2021-01-26 | 中国石油天然气股份有限公司 | Anti-freezing type corrosion-inhibition bubble-exclusion scale inhibitor and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| Sun, YG.Molecular array behavior and synergistic effect of sodium alcohol ether sulphate and carboxyl betaine/sulfobetaine in foam film under high salt conditions.《COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 》.2015,138-148. * |
| 杨亚聪等.抗油低含水率起泡剂研制及其在苏里格气田应用.《石油化工应用》.2011,(第10期), * |
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Inventor after: Deng Ming Inventor after: Luo Sibao Inventor after: Yang Qing Inventor after: Deng Yongzhi Inventor before: Meng Nan Inventor before: Deng Ming Inventor before: Luo Sibao Inventor before: Yang Qing Inventor before: Deng Yongzhi |