A low-carbon mixed organic acid for oil well plugging removal and its preparation method and application
A technology for mixing organic acids and oil wells, which is applied in chemical instruments and methods, earthwork drilling and production, wellbore/well components, etc. It can solve the problems of obtaining synthetic low-carbon mixed organic acid raw materials, not having economic feasibility, reservoir plugging, etc. question
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Embodiment 1
[0077] Embodiment 1 (processing radius 2.0 meters, throughput rounds less than 5 rounds):
[0078] Synthesis of 10 square low carbon mixed organic acid solution embodiment:
[0079] The ratio of organic acid raw materials by mass:
[0080] Fatty alcohol (dodecanol): ethylene oxide: dodecylbenzenesulfonic acid: sulfamic acid: oxalic acid: biuret: furazolidone: 3-benzofuranone: sodium nitrite = 0.5: 0.25: 0.5: 3.5:2.5:0.5:1.0:1.0:0.25;
[0081] 1. Quantitatively prepare each reagent according to the ratio;
[0082] 2. Check whether a reaction kettle (1 square) and two chemical mixing tanks (10 squares) are in working condition, and whether the water for dosing is smooth;
[0083] 3. Add 50kg of dodecyl alcohol and 25kg of ethylene oxide quantitatively into the reactor, stir evenly (60 rpm) for 10 minutes, raise the temperature of the reactor to 105°C, react for 90 minutes under uniform stirring, and then cool down to room temperature, then slowly add quantitative 50kg of dod...
Embodiment 2
[0091] Embodiment 2 (processing radius 2.5 meters, throughput rounds 5-10 rounds):
[0092] Synthesis of 10 square low carbon mixed organic acid solution embodiment:
[0093] The ratio of organic acid raw materials by mass:
[0094] Fatty alcohol (n-hexanol): ethylene oxide: tridecylbenzenesulfonic acid: sulfamic acid: oxalic acid: biuret: furazolidone: 3-benzofuranone: sodium nitrite = 0.5: 0.25: 0.25: 3.5 :2.75:0.5:1.0:1.0:0.25;
[0095] 1. Quantitatively prepare each reagent according to the ratio of the medicine;
[0096] 2. Check whether a reaction kettle (1 square) and two chemical mixing tanks (10 squares) are in working condition, and whether the water for dosing is smooth;
[0097] 3. Add 50kg of fatty alcohol and 25kg of ethylene oxide weighed quantitatively into the reactor, stir evenly (60 rpm) for 10 minutes, heat up the reactor to 105°C, react for 90 minutes under uniform stirring, and then cool to room temperature, and then slowly add a quantitative amount o...
Embodiment 3
[0105] Embodiment 3 (processing radius 3.0 meters, throughput rounds more than 10 rounds):
[0106] Synthesis of 10 square low carbon mixed organic acid solution embodiment:
[0107] The ratio of organic acid raw materials by mass:
[0108] Fatty alcohol (n-octanol): ethylene oxide: n-pentylbenzenesulfonic acid: sulfamic acid: oxalic acid: biuret: furazolidone: 3-benzofuranone: sodium nitrite = 0.25: 0.25: 0.75: 3.75:2.75:0.5:0.75:0.75:0.25;
[0109] 1. Quantitatively prepare each reagent according to the ratio of the medicine;
[0110] 2. Check whether a reaction kettle (1 square) and two chemical mixing tanks (10 squares) are in working condition, and whether the water for dosing is smooth;
[0111] 3. Add 25kg of fatty alcohol and 25kg of ethylene oxide weighed quantitatively into the reactor, stir evenly (60 rpm) for 10 minutes, raise the temperature of the reactor to 105°C, react for 90 minutes under uniform stirring, and then cool to room temperature, and then slowly...
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