Published January 2013
Improved method of conducting cementation under pressure in the wells of high absorption capacity
D.A. IskandarovThe article is about necessity of cementation in the wells, features of cementation under pressure or without, the preparation operations, carried out before cementation for reducing absorption on the eve of cementation in the wells of high absorption capacity. As well as limited nature of their application field in some cases, preparation operations, carried out before cementation, risks expected in the cementation carried out under pressure and measures against them are described. The ways of cementation on the bases of dependence of the period, spent on loading pressure fluid from the period of circulation in the wells of high absorption capacity are studied as well. In the case of fluid circulation is not formed in the mentioned period, as a result of some part of cement solution entering into the layer (compressing) and being low-level (vacuum) of fluid column in back-pipe, the risk of pipes being crammed with cement arises. There were measures, taken to improve the technology of cementation of quality, liquidate this risk and ensure background for carrying out cementation of quality.
