Khan Muhammad Arqam, Lalji Shaine Mohammadali, Ali Syed Imran, Li Mei-Chun, Burney Muneeb
China University of Petroleum (East China), Huangdao District, Qingdao City, 266580 Shandong Province, China.
Department of Petroleum Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan.
ACS Omega. 2024 Aug 2;9(32):34765-34776. doi: 10.1021/acsomega.4c04177. eCollection 2024 Aug 13.
The success of any drilling activity mainly depends on the characteristics of the drilling fluid. Therefore, a high-performance drilling fluid is substantial for any drilling operation. During overbalance drilling operations, the drilling mud invades the permeable formations and causes the loss of circulation, which is responsible for nonproductive time events. Hence, the filtration characteristics of the drilling mud are an imperative property. The purpose of this study is to evaluate the filtration characteristics of water-based mud systems in the presence of polyanionic cellulose (PAC) and multiwalled carbon nanotubes (MWCNTs)/TiO nanoparticles. The nanoparticles were synthesized by using the hydrothermal technique. For the first time, a composite of MWCNTs and TiO has been utilized as a fluid loss control additive in the petroleum sector, marking a significant development in the field. The filtration properties of water-based mud were assessed at two concentrations (0.35 g and 3.5 g). Furthermore, based on the two levels (concentrations) and two factors (particles), the novel application of the central composite response surface design of experiment (CCD) was implemented. The results showed that the predicted model from CCD was in good agreement with the filter press experimental result with = 0.8446. Furthermore, based on the ANOVA analysis, the concentration of MWCNTs/TiO nanoparticles was the most significant parameter with -value < 0.05. In addition, 10 out of 13 experimental points fall under the ±10% error window, thus indicating a higher accuracy of the regression model. The 2D interactive plots further show that the concentration of PAC is insignificant and has no considerable influence on fluid loss control, which was also validated by -value > 0.05. The performance of MWCNTs/TiO nanoparticles is superior to PAC because these nanodimension particles plug the pore-spacing and block the permeation channels on the filter paper. However, the PAC, because of its long molecular chain, entangles around the pore spaces and plugs the microsize pores, which eventually reduces the filtration loss volume up to some extent. By observing the synergistic interaction between MWCNTs/TiO nanoparticles and PAC, this study develops valuable insights that assist in improving the performance of drilling fluid and minimizes the wellbore instability issues in the oil and gas sector.
任何钻井活动的成功主要取决于钻井液的特性。因此，高性能钻井液对任何钻井作业都至关重要。在过平衡钻井作业期间，钻井泥浆侵入渗透性地层并导致循环损失，这是造成非生产时间事件的原因。因此，钻井泥浆的过滤特性是一项至关重要的性能。本研究的目的是评估在存在聚阴离子纤维素（PAC）和多壁碳纳米管（MWCNTs）/TiO纳米颗粒的情况下水基泥浆体系的过滤特性。这些纳米颗粒是通过水热技术合成的。首次将MWCNTs和TiO的复合材料用作石油行业的滤失控制添加剂，这标志着该领域的重大进展。在两种浓度（0.35克和3.5克）下评估了水基泥浆的过滤性能。此外，基于两个水平（浓度）和两个因素（颗粒），实施了实验的中心复合响应面设计（CCD）的新应用。结果表明，CCD的预测模型与压滤实验结果吻合良好，相关系数为0.8446。此外，基于方差分析，MWCNTs/TiO纳米颗粒的浓度是最显著的参数，p值<0.05。此外，13个实验点中有10个落在±10%误差窗口内，从而表明回归模型具有更高的准确性。二维交互式图进一步表明，PAC的浓度不显著，对滤失控制没有相当大的影响，这也通过p值>0.05得到验证。MWCNTs/TiO纳米颗粒的性能优于PAC，因为这些纳米尺寸颗粒堵塞了孔隙间距并阻塞了滤纸上的渗透通道。然而，PAC由于其长分子链，缠绕在孔隙周围并堵塞了微尺寸孔隙，最终在一定程度上降低了滤失量。通过观察MWCNTs/TiO纳米颗粒与PAC之间的协同相互作用，本研究得出了有价值的见解，有助于提高钻井液的性能并最大限度地减少油气行业中的井筒不稳定问题。
