Al Jaberi Jaber, Bageri Badr, Elkatatny Salaheldin, Patil Shirish
Department of Petroleum Engineering, King Fahd University of Petroleum & Minerals, Dhahran31261, Saudi Arabia.
Center for Integrative Petroleum Research, King Fahd University of Petroleum & Minerals, Dhahran31261, Saudi Arabia.
ACS Omega. 2023 Jan 1;8(2):2155-2163. doi: 10.1021/acsomega.2c06264. eCollection 2023 Jan 17.
Drilling fluid is a critical component in drilling operation due to its various functions. It consists of many elements, and one of the main components is the weighting material which controls the mud density. The weighting material type and concentration have a significant impact on the drilling fluid properties. A common weighting material used in the oil and gas industry is barite. In this work, the impact of barite concentration on water-based drilling fluid was evaluated. The investigated drilling fluid properties are density, pH value, filtration behavior, and rheological parameters. An intense investigation was carried out to evaluate the impact of barite concentration on the filtration and filter cake sealing properties. The density and pH values were measured at room temperature, filtration test was performed at room temperature, and differential pressure was equal to 100 psi. The rheological parameters were determined after hot rolling for 16 h at a temperature of 250 °F. The results showed that both the density and pH value increased linearly with barite dosage. The filtration volume, filter cake thickness, and permeability increased with the incremental increase in barite dosage, and the exponential relationship was the best in describing the relation with barite concentration. However, the filter cake porosity had an inverse proportional relation with barite dosage. In the case of rheological properties, all the investigated properties including the plastic viscosity, yield point, ratio of yield point to plastic viscosity, and gel strength at two different times (i.e., 10 s and 10 min) increased in general as the barite concentration increased.
钻井液因其多种功能而成为钻井作业中的关键组成部分。它由许多成分组成，其中一个主要成分是控制泥浆密度的加重材料。加重材料的类型和浓度对钻井液性能有重大影响。石油和天然气行业常用的加重材料是重晶石。在这项工作中，评估了重晶石浓度对水基钻井液的影响。所研究的钻井液性能包括密度、pH值、过滤性能和流变参数。进行了深入研究以评估重晶石浓度对过滤和滤饼封堵性能的影响。在室温下测量密度和pH值，在室温下进行过滤试验，压差等于100磅力/平方英寸。流变参数是在250°F温度下热轧16小时后测定的。结果表明，密度和pH值均随重晶石用量呈线性增加。随着重晶石用量的增加，过滤量、滤饼厚度和渗透率增加，且指数关系最能描述与重晶石浓度的关系。然而，滤饼孔隙率与重晶石用量成反比。就流变性能而言，随着重晶石浓度的增加，所有研究的性能，包括塑性粘度、屈服点、屈服点与塑性粘度之比以及两个不同时间（即10秒和10分钟）的凝胶强度总体上都增加了。
