When drilling with drilling mud additives, the mud used in petroleum drilling has three main functions: firstly, it suspends the continuously broken rock particles of the drill bit returns them to the ground with the mud, allowing the drilling to continue; Secondly, when there is a warning of a blowout, using mud with a larger specific gravity can prevent the well blowing out (its pressure plays a balance role with the formation pressure); Thirdly, when entering the target layer, light mud can be circulated to prevent the cracks in the target layer being blocked prepare for fracturing increasing production.
Due to different needs during the drilling process, the mud needs to be modified at any time. These additives used for mud modification are mud additives. Such as barite powder (used for well killing), suspension agent of macromolecular materials, etc.
Petroleum additives
1、 Characteristics
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.
use to
The unidirectional pressure sealing agent DF-1 for drilling fluid is suitable for the filtration of porous micro fractured formations in different situations during drilling. The good compatibility of this product is suitable for different systems densities of drilling completion fluids, achieving effective sealing of micro crack leakage, improving mud cake quality, reducing water loss. The recommended dosage for this product is 4%.
Physical chemical properties: Appearance: Grey white powder, fineness: 40 mesh, water content: ≤ 14%, pH value: 7-9.
Mud performance: project base mud
Base slurry+4%801