本文選題：黏彈性 + 表面活性劑�。� 參考：《鉆井液與完井液》2017年05期

【摘要】：以氨基化合物、長鏈酰氯等為原料,研制出微泡鉆井液用陰離子型黏彈性表面活性劑VES-1。通過優(yōu)選膠束促進劑、助表面活性劑等優(yōu)化出VES-1黏彈性體系。該體系黏彈性好,泡沫穩(wěn)定性強,0.01 r/min低剪切黏度可達100 000mPa·s,泡沫半衰期可達18 min以上。在VES-1黏彈性體系基礎(chǔ)上,結(jié)合文23地層特點,通過優(yōu)選穩(wěn)泡劑、降濾失劑等形成高觸變性微泡鉆井液體系,并對其性能進行了評價。評價結(jié)果表明:VES-1微泡鉆井液體系具有高觸變性,能夠快速形成結(jié)構(gòu),10 s初切可達到12 Pa以上,而且初、終切相差不大,有利于懸浮攜帶巖屑,可對低壓易漏地層形成快速有效封堵;120℃下注入325 mL鉆井液承壓即可達到10 MPa以上,可解決低壓易漏地層鉆進過程中地層漏失難題;VES-1微泡體系同時具有良好的抗壓縮性,30 MPa下密度最高升高不超過0.05 g/cm~3,該體系經(jīng)120℃老化16 h后性能穩(wěn)定,密度無變化,可抗10%復(fù)合鹽水污染;同時具有良好的潤滑抑制性,潤滑系數(shù)比普通聚合物體系低54%以上,各項性能能夠滿足文23儲氣庫建設(shè)的需要。
[Abstract]:Using amino compounds and long chain acyl chloride as raw materials, an anionic viscoelastic surfactant VES-1 for microbubble drilling fluid was developed. VES-1 viscoelastic system was optimized by micelle accelerator and cosurfactant. The system has good viscoelasticity, strong foam stability, low shear viscosity of 0.01 r/min and foam half-life of more than 18 min. On the basis of VES-1 viscoelastic system and combining with the characteristics of Wen 23 formation, a highly thixotropic microbubble drilling fluid system was formed through the optimization of foam stabilizer and filtration reducer, and its performance was evaluated. The evaluation results show that the microbubble drilling fluid system of 1: VES-1 has high thixotropy, and the structure can be formed rapidly and the initial cut can reach more than 12 Pa in 10 s, and the initial and final cutting difference is not significant, which is favorable for carrying cuttings in suspension. The pressure of 325ml drilling fluid can be injected into the formation of low pressure and easy leakage formation at 120 鈩，

本文編號：2008436