34results about How to "Improve anti-slump performance" patented technology

The invention relates to an anti-sloughing diluted filtration reducing agent for drilling fluid and a preparation method thereof. The filtration reducing agent is prepared from the following raw materials by weight portion: 80 to 120 portions of substance containing humic acid, 30 to 80 portions of sodium metabisulfite, 300 to 500 portions of water, 10 to 30 portions of ammonium hydrolyzed polyacrylonitrile, 2 to 15 portions of cross linking agent, 30 to 50 portions of potassium hydroxide, 5 to 20 portions of complexing agent, 1 to 10 portions of urea and 10 to 20 portions of organic siliconeresin. The preparation method comprises the following steps: weighting the water, the potassium hydroxide, lignite or peat or weathered coal and the sodium metabisulfite by weight portion, adding thematerials into a stirred autoclave, sealing the stirred autoclave, raising the temperature, performing reaction and reducing the temperature; adding the ammonium hydrolyzed polyacrylonitrile, the cross linking agent, the complexing agent, the urea and the organic silicone resin by weight portion into the stirred autoclave after the temperature reduction, sealing the stirred autoclave, raising thetemperature and stirring for reaction; and discharging, and performing spray drying on a product to obtain a finished product. The anti-sloughing diluted filtration reducing agent has good comprehensive performance, can prevent slough of mineshafts and reduce the filtration loss and viscosity of slurry, and is easy to realize safe production.

The invention discloses collapse-resistant polymer slurry powder and a preparation method thereof. The collapse-resistant polymer slurry powder is prepared from the following ingredients in parts by weight through compounding: 2.5 to 5 parts of thickening agents, 5 to 10 parts of filtrate loss reducers, 85 to 90 parts of solid phase film-forming agents, 0.05 to 0.1 part of dispersants and 0.1 to 0.2 part of lubricating agents. The collapse-resistant polymer slurry powder provided by the invention has the advantages that slurry prepared from the collapse-resistant polymer slurry powder has the advantages of good homogeneity, thin and compact mud film, low filtration loss, little settled slag, small doping quantity, many cyclic use times, no environment pollution and the like; the technical problems of diameter reduction and hole collapse of the water sensitive geological pile foundation construction are well solved; the pile foundation carrying force of a friction pile is improved by 30 percent or higher; the construction cost is greatly reduced; wide application prospects are realized.

The invention relates to a cutting agent for gas stagnation plugs in the technical field of petroleum drilling chemical materials and a preparation method. The cutting agent for air stagnation plugs is made by grafting polymerized monomers onto the surface of layered chain clay minerals after organic modification; the cutting agent for air stagnation plugs prepared by the method of the present invention has better high temperature resistance Salt resistance, cutting and water loss reducing performance; the temperature resistance of the air stagnation plug cutting agent of the present invention is better than that of organic cutting agents, and the compatibility and water loss performance are better than simple layered chain clay minerals. The excellent properties of polymers for water loss reduction and layered chain clay minerals’ resistance to temperature and shearing are suitable for use in deep high-temperature formations, and can effectively improve the gas retardation capacity of gas stagnation plugs, thereby slowing down the speed of oil and gas upward channeling and prolonging safe operation time.

The invention discloses a construction method of a municipal soft soil roadbed, wherein the roadbed comprises: a road base and an anti-collapse edge, a sand layer is arranged on the road base, a supporting layer is arranged above the sand layer, and a water-conducting layer is arranged on the supporting layer An anti-collapse layer is arranged on the water-guiding layer, a pavement layer is arranged on the anti-collapse layer, a waterproof layer is arranged above the pavement layer, and anti-collapse edges are arranged on both sides of the subgrade. The construction method of a municipal soft soil subgrade described in the present invention can effectively prevent the subgrade from collapsing on both sides after being rolled and used by setting anti-collapse edges on the outside of the subgrade, and the sand layer The supporting layer is set on the ground, which can greatly improve the supporting performance of the entire subgrade, improve its safety in use, and prolong its service life. The setting of the water-conducting layer and waterproof layer can effectively improve the water-conducting effect and waterproof performance of the subgrade. , The setting of the anti-collapse layer can effectively limit the subgrade to a certain extent, avoid its collapse, and greatly improve the stability of its structure and the safety of use.