Well cementation working solution system and preparing method thereof

The invention relates a well cementation working solution system and a preparing method thereof. The working solution system is mainly prepared by combining a base solution part and a dry ash part at the mass ratio of 1:(1.4-2.5). The base solution part is prepared from, by weight, 100 parts of water, 0.3-3.5 parts of a stabilizing agent, 1.5-5 parts of a suspending agent, 0-10 parts of a parting agent, 2-12 parts of an activating agent, 0-5 parts of a thickening time control agent and 0-4 parts of a thinning agent. The dry ash part is prepared from, by weight, 30-120 parts of a curing agent and 0-250 parts of a weighting agent. The preparing method comprises the following steps that firstly, the base solution part and the dry ash part are prepared according to the formula dosages respectively; secondly, the base solution part and the dry ash part prepared in the first step are mixed according to the formula dosages according to the construction requirement, and the working solution system is obtained, wherei