Drilling cutting treatment agent and preparation method thereof

Abstract

The invention discloses a drilling cutting treatment agent and a preparation method thereof. The treatment agent is prepared from the following raw materials in parts by weight: 10-20 parts of aluminum salts, 3-8 parts of iron salts, 30-40 parts of chlorosilane, 0.2-0.5 part of steric hindrance agent, 0.4-0.8 part of oxidant and 100-1500 parts of water; and the drilling cutting treatment agent isan iron aluminum silicate polymer which is produced by the copolycondensation reaction using high activity silicic acids, aluminum ions and iron ions under the action of the steric hindrance agent andthe oxidant, and provided with a three-dimensional structure. The polymer can not only effectively flocculate various particles in drilling cuttings, but also react with various chemical treatment agents in the drilling cuttings to generate harmless precipitates; and heavy metal ions in the drilling cuttings can further be absorbed and purified to form pores with inert crystals embedded in the drilling cuttings, and thus the compactness and compressive strength of the cuttings are greatly enhanced. According to the drilling cutting treatment agent, the surface hardness of treated cuttings isincreased, the recovery and utilization of the drilling cuttings are convenient, and harmless treatment and recovery of the drilling cuttings are achieved.

Description

technical field

[0001] The invention relates to the field of environmental protection materials, in particular to a drilling cuttings treatment agent and a preparation method thereof. Background technique

[0002] Drilling cuttings produced in the process of oil and gas exploration and development are wastes discharged from the solid control system with the drilling fluid during the drilling process. Sewage, dirty oil and drilling cuttings, etc., also contain heavy metals such as mercury, copper, arsenic, chromium, zinc, lead, etc., which are the main pollutants produced in the process of oil and gas exploration and development, with high pH, ​​high COD, high stability, High salt content, poor biodegradability and other characteristics, direct discharge is more harmful to the ecological environment. Improper disposal and excessive discharge of drilling cuttings can cause serious pollution of various environmental media such as soil, surface water and groundwater. In order ...