Petroleum additives
The unidirectional pressure sealing agent DF-1 for drilling fluid is a gray yellow powder product composed of various natural fibers, filling particles, additives processed through special processes, with appropriate grading certain processes. After the product is added in drilling, under the action of one-way pressure difference, it can have a good sealing effect on various leaks in the formation. It is easy to use, has good compatibility, does affect the mud performance.