Profile control and sand fixing integrated technology for heat oil production well

Abstract

The invention relates to a kind of integrated technology of profile control and fixing sand in the thermal production well. The invention has adopted proportionate mixture of the blast furnace water garrulous slay (BFS), activator, expanding agent, outer active agent, and dispersed packing, then mix them evenly with mixer thruogh mixing, crushing, finally screen to form to profile control sand-proof agent. Mix with clear water to form 30%-50% floating distributed system when applying, then inject it into the stratum to form integrated technology of profile control and fixing sand in the thermal production well. It is mainly used in the mining of compacted oil gas injection well. It can effectively control the surfacing of thermal production well, adjust gas-absorbing section, plug vapor and water fleeing, meanwhile prevent the oil well from producing sands. It has realized the integration of adjusting plug in high temperature and fixing sands, and solved the contradiction between adjusting plug and helping discharge when the two constructed separately, thus save the costs of the measures.

Description

Technical field:

[0001] The invention relates to a chemical injection agent for profile control operation of heavy oil steam injection production wells in oil fields, in particular to an integrated technology for profile control and sand consolidation of thermal recovery wells. Background technique:

[0002] Heavy oil reservoirs have poor development, loose structure, and poor cementation; domestic and foreign technological measures to solve sand control in heavy oil wells mainly include mechanical and chemical methods. However, due to reasons such as technology and chemicals, there is no ideal sand control process for thermal recovery wells so far. In terms of profile control and plugging, the cost is high, the agent is single, and the effect of the measures is poor. At present, the process of sand control and plugging adjustment in thermal recovery wells is complicated, high in cost and poor in effect. Invention content:

[0003] The object of the present invention is t...