Portlandtsement grouting PTTs I-100

The grouting portlandtsement of PTTs I-100 belongs to special types of a portlandtsement. It is intended for concreting of oil and gas wells. The crushed clinker and cement is its part.

The purpose of cementation of wells grouting portlandtsement - isolation of oil-bearing layers from water-bearing, and also oil-bearing layers from each other. Carry to methods of a tamponirovaniye of wells: direct cementation by grouting portlandtsement, assembly filling of a grouting portlandtsement, cementation by a grouting portlandtsement through filling pipes, the return cementation by grouting portlandtsement, multistage filling of a grouting portlandtsement and others. The greatest distribution was gained by direct cementation by grouting portlandtsement.

The main requirements to quality of a grouting portlandtsement are as follows. Slime (cement mortar) of a grouting portlandtsement surely has to have big fluidity in order that it was possible to download it easily and quickly in a column of pipes and to press through it then in annular space. Solution of a grouting portlandtsement has to remain mobile all the time while cementation is carried out. Grouting cements have to have sufficient durability in the first two days after a zatvoreniye. That is after downloading in a well solution of a grouting portlandtsement has to for the shortest time get necessary durability and keep it before full hardening and receiving a cement stone which, in turn, has to be resistant to aggressive underground waters, possess a certain water tightness and to be rather plastic that during adjustment works in it cracks were not formed. For gas wells also actual is such quality of the cement stone executed on the basis of a grouting portlandtsement as gas-tightness. In this regard recently the domestic industry began to develop and special grades of a grouting portlandtsement for gas branch.

Except grouting cements for hot and for cold wells, both the universal grouting portlandtsement and grouting cements intended for cementation in special conditions of gas and oil wells are issued now (so-called special grouting portlandtsement with quite narrow scope). For example, the facilitated grouting portlandtsement received in the same way as other grouting portlandtsement, but with use of the special facilitating additive (pumice, a molding, bergmeal). Such facilitated grouting portlandtsement are issued both for hot wells, and for cold.

Other goods: cement, slate, slag stones, plates, brick, electrodes, crushed stone.