【摘要】：地層中普遍存在粘土礦物,其主要類型有高嶺石、蒙脫石、伊利石等。本文針對(duì)粘土礦物水化膨脹及顆粒分散運(yùn)移造成儲(chǔ)層滲透率下降等問題,以1,2-丙二醇(1,4-丁二醇、丙三醇)、環(huán)氧氯丙烷、氨水等為原料,通過開環(huán)聚合及胺化反應(yīng)合成了三類有機(jī)胺粘土穩(wěn)定劑,得到了三類粘土穩(wěn)定劑的最佳合成條件,我們把最佳合成條件下的產(chǎn)物分別記為L(zhǎng)op-1、Lop-2和Lop-3,并篩選出兩種原料利用率較高的粘土穩(wěn)定劑Lop-1和Lop-2。將防膨率作為一項(xiàng)重要指標(biāo),通過與市售Bop-3有機(jī)胺粘土穩(wěn)定劑進(jìn)行比較,考察合成的這兩種有機(jī)胺粘土穩(wěn)定劑的防膨性、抗溫性、抗酸堿性、長(zhǎng)效性、與無機(jī)鹽復(fù)配效果,與壓井液的配伍性和對(duì)儲(chǔ)層傷害程度等應(yīng)用性能。當(dāng)以1,2-丙二醇和1,4-丁二醇為起始劑時(shí),其與環(huán)氧氯丙烷的最佳物質(zhì)的量配比為1:8,催化劑乙醇鈉的最佳用量為二元醇物質(zhì)的量的5%,胺化反應(yīng)的優(yōu)化條件為:反應(yīng)溫度為110℃,反應(yīng)時(shí)間為6h,氨與氯甲基的最佳物質(zhì)的量配比為5:1;當(dāng)以丙三醇為起始劑時(shí),其與環(huán)氧氯丙烷的最佳物質(zhì)的量比1:9,催化劑乙醇鈉的最佳用量為丙三醇物質(zhì)的量的5%,胺化反應(yīng)的優(yōu)化條件為:反應(yīng)溫度為130℃,反應(yīng)時(shí)間為8h,氨與氯甲基的最佳物質(zhì)的量配比為5:1。對(duì)于Lop-1、Lop-2,當(dāng)其質(zhì)量分?jǐn)?shù)為2%時(shí),防膨率分別達(dá)到83.67%、80.93%,防膨效果較好。這兩種粘土穩(wěn)定劑在一定濃度下,隨溫度和p H的改變,其防膨率變化幅度較小,即兩者均具有良好的抗溫性和抗酸堿性,抗洗率與Bop-3的相當(dāng),都在90%以上,即具有良好的持久性,與無機(jī)鹽KCl、NH4Cl二元、三元復(fù)配后防膨效果好于其單獨(dú)使用時(shí),其與現(xiàn)場(chǎng)壓井液混合均勻后,透明、無沉淀、不分層,即與壓井液配伍性優(yōu)良,經(jīng)過Lop-1、Lop-2粘土穩(wěn)定劑處理的巖心在注入蒸餾水時(shí)能保持很高的滲透率,K3/K2值達(dá)到93.97%-95.09%,即具有較好的儲(chǔ)層保護(hù)效果。
[Abstract]:Clay minerals are commonly found in the strata, the main types of which are kaolinite, montmorillonite, Illite and so on. Aiming at the problems of reservoir permeability decrease caused by hydration expansion and particle dispersion migration of clay minerals, this paper uses 1o 2-propanediol, epichlorohydrin, ammonia water and so on as raw materials, which are composed of 1o 2-propanediol (1o 4-butanediol, propanediol), epichlorohydrin, ammonia water, etc. Three kinds of organic amine clay stabilizers were synthesized by ring-opening polymerization and amination reaction. The optimum conditions for the synthesis of three kinds of clay stabilizers were obtained. The products under the optimum synthetic conditions were classified as Lop-1,Lop-2 and Lop-3, respectively, and two kinds of clay stabilizers, Lop-1 and Lop-2., with high utilization of raw materials were screened out. The anti-swelling rate was taken as an important index. By comparing it with the Bop-3 clay stabilizer, the anti-swelling, anti-temperature, anti-acid and alkalinity, long-term effect and mixed effect with inorganic salt of the two kinds of organic amine clay stabilizers were investigated. Compatibility with well-killing fluid and application performance such as reservoir damage degree. The optimum mass ratio of 1,2-propanediol to epichlorohydrin is 1: 8, the optimum dosage of catalyst sodium ethanol is 5% of diol, and the optimum conditions of amination reaction are as follows: reaction temperature is 110 鈩，

本文編號(hào)：2286663