Chemicals for primary cementing
In order to achieve an adequate bond in the cement layer, the ring space must be properly washed before closing this procedure. Thanks to this, it is possible to eliminate gas migration after cementing. Proper washing of the ring space and closing of the pipe column affect the long-term operation of the well. This reduces the effect of the corrosive environment on the pipe column in aggressive situations. The issue of washing the ring space touches on many scientific aspects. The development of techniques and technology has not yet made significant progress in improving the connection of wells as gas migration from wells is still possible.
In order to achieve an adequate bond in the cement layer, the ring space must be properly washed before closing this procedure. Thanks to this, it is possible to eliminate gas migration after cementing. Proper washing of the ring space and closing of the pipe column affect the long-term operation of the well. This reduces the effect of the corrosive environment on the pipe column in aggressive situations. The issue of washing the ring space touches on many scientific aspects. The development of techniques and technology has not yet made significant progress in improving the connection of wells as gas migration from wells is still possible.
In order not to favor the migration of gas in the cement layer, the process of washing the annular space of the pit is needed, as well as the removal of mud. The amount of mud left in the opening wall impairs the sealing efficiency of the pipe column. Therefore, the most important step is to thoroughly wash the ring space before the cementing procedure.
In addition, the issue that affects the sealing quality of the ring space is the adhesion of the hardened cement powder to the rock through the mud residue. The thickness of the mud residue depends on the degree of washing, as well as the washing time and intensity. Can be removed with a chemical with suitable properties and flow rate. Consequently, it is important to develop and use a hybrid fluid. In addition to surfactants, the liquid must also contain small fractions of abrasive materials. When designing hybrid fluid, measures are taken to limit the fractionation of the abrasive material.
