The objective of this work was to develop nanomaterial inhibitor with long squeeze life for oil and gas production. Different surfactants, such as trisodium citrate (Na₃Cit), cetyltrimethyl ammonium bromide, benzethonium chloride (Hyamine), and bipyridinium dibromide (Gemini), were added to synthesize nanoparticle Ca-DTPMP inhibitor at pH 9.0. The inhibitors were characterized by scanning electron microscope and dynamic light scattering. All these surfactants significantly decreased the particle size, but Gemini was the most effective one to control the calcium phosphonate salt particle size to be about 500 nm. Long-term squeeze experiments (∼3000 PV) saturated with calcite at 70°C and 75 psi back pressure through a glass column packed with Fayetteville shale rock show that the return DTPMP concentration was as high as 3 ppm for the Gemini–Ca-DTPMP colloidal inhibitor. This is an unprecedented improvement in comparison with the squeeze return of DTPMP only inhibitor where the inhibitor return concentration dropped to below 1 ppm within 400 pore volumes. The Ca-DTPMP speciation, potential field application, and the SqueezeSoftPitzer model prediction are also discussed.

这项工作的目的是开发具有长挤压寿命的纳米材料抑制剂，用于石油和天然气生产。不同的表面活性剂，例如柠檬酸三钠（Na ₃加入Cet），十六烷基三甲基溴化铵，苄索氯铵（Hyamine）和Bipyridinium dibromide（Gemini），以合成pH 9.0的纳米Ca-DTPMP抑制剂。通过扫描电子显微镜和动态光散射对抑制剂进行表征。所有这些表面活性剂均显着降低了粒径，但Gemini是最有效的将膦酸钙盐粒径控制在500 nm左右的表面活性剂。通过装有Fayetteville页岩的玻璃柱在70°C和75 psi背压下用方解石进行的长期挤压实验（约3000 PV）表明，Gemini–Ca-DTPMP的返回DTPMP浓度高达3 ppm。胶体抑制剂。与仅DTPMP抑制剂的挤压回流相比，这是前所未有的改进，后者在400孔体积内抑制剂回流浓度降至1 ppm以下。还讨论了Ca-DTPMP的形态，潜在的田间应用以及SqueezeSoftPitzer模型的预测。