46results about How to "No fluorescence" patented technology

The invention discloses a boring well wall stabilizer which is mainly used for solving the technical problem that storage layer is damaged due to unstable well wall and expansion of clay during the boring process; the well wall stabilizer consists of 20-35 parts of diallyldimethylammonium chloride, 2-5 parts of diallyldimethylammonium chloride-acrylamide polymer, 1-5 parts of non-ionic surfactantOP-10, 1-2 parts of fluoride-bearing alkyl ethoxy ether alcohol non-ionic surfactant, 1-3 parts of cellulose, 1-5 parts of KCl and 45-74 parts of water, according to the weight parts. The stabilizer can stabilize the well wall, greatly reduces the expansion rate of the clay at storage layer and eliminates the damages on the storage layer.

The invention provides oil-in-water drilling fluid taking biodiesel as a dispersion phase as well as a preparation method and application thereof. The oil-in-water drilling fluid comprises 40-70 parts by volume of water and 30-60 parts by volume of biodiesel, wherein the total volume of water and biodiesel is 100%; the oil-in-water drilling fluid further comprises the following components: bentonite with the mass-to-volume ratio (g / mL) of 1%-6%, sodium carbonate with the mass-to-volume ratio of 0.05%-0.3%, sodium hydroxide with the mass-to-volume ratio of 0.02%-0.05%, a main emulsifier with the mass-to-volume ratio of 2%-5%, an auxiliary emulsifier with the mass-to-volume ratio of 0.2%-1%, a shale inhibitor with the mass-to-volume ratio of 0.5%-5% and a filtrate reducer with the mass-to-volume ratio of 0.5%-5%. The oil-in-water drilling fluid provided by the invention has the characteristics of being low in cost, non-toxic, non-fluorescent, low in density, adjustable, good in rheological property, low in filter loss, excellent in lubricating property and high in upper temperature resistance limit, and further has advantages of being excellent in antifouling property, shale inhibition property, reservoir protection property and environment acceptability.

The invention discloses a degradable modified starch-based polymer well wall anti-collapse material and a preparation method thereof, which consists of four components: modified starch water-absorbing resin, alkyl glycoside, cross-linking auxiliary agent and defoaming auxiliary agent. The preparation method is to use starch as the skeleton, acrylic acid and acrylamide as the graft comonomer, potassium persulfate as the initiator, N, N'-methylenebisacrylamide as the crosslinking agent, and polymerize in aqueous solution to form a modified Starch water-absorbent resin, mixed with alkyl glucoside, cross-linking aid, and defoaming aid in a weight ratio of 10-14:3-6:2-4:1-2 parts. The degradable modified starch-based polymer well wall anti-slump material synthesized by the present invention is biodegradable and will not cause damage to the stratum; the price is low; the synthesis process is simple; it is not easy to segregate under pressure and has good plugging performance: When the system is added at 3%, the filtration loss reduction rate is 60-80%, and the shale linear expansion inhibition rate is 55-80%; the temperature resistance is 180°C; it is non-toxic and has no fluorescence.

The invention discloses a drill liquid lubricating anti-sloughing agent and preparation method thereof. The lubricating anti-sloughing agent is composed of liquid wax 10 to 30 parts, non-ionic surfaceactivator 1 to 3 parts, polyatomic alcohol 5 to 15 parts, polymer 0.5 to 1 part according to 100 weight parts, and water as residue. The preparation method is: putting liquid wax, non-ionic surface activator, and polyatomic alcohol into reactor, heating the mixture to 60 deg C. to 80 deg C., agitating the mixture for 30min with agitation speed controlled in the ranged of 1000 to 2000 rpm; addingpolymer-dissolved polymer into the reactor, agitating the mixture for 60 to 120 min continuously at 60 to 80 deg C. with agitation speed controlled in 1000 to 2000 rpm, cooling it to room temperature,toobtain the product of lubricating anti-sloughing agent. The lubricating anti-sloughing agent of the invention is provided with good stability, with excellent lubricating, anti-sloughing and oil gas l ayer-protecting effects in drilling liquid, and good environmental protection property without fluorescence, toxic pollution. The adopted materials are easy to obtain. The preparation method is simple, easy to implement with low cost.

The present invention provides a kind of nano high molecular polymer latex, preparation method and application thereof, described nano high molecular polymer latex is made of monomer, initiator, precipitating agent, dispersion stabilizer-polyoxyethylene diamine and hydrolyzing agent It is prepared by chemical hydrolysis in an alcohol-water-oil mixed solvent. The mass percentage of each reactant is: monomer 40-60%, initiator 0.5-2%, precipitant 1-5%, dispersion stabilizer-polyoxygen Ethylenediamine 5-10%, hydrolysis agent 5-10%, alcohol-water-oil mixed solvent 15-40%. The invention provides nano-polymer latex and its preparation method, the process is simple and efficient, can resist saturated brine and compound brine, can resist temperature up to 160°C, is non-toxic, has no fluorescence, is suitable for various water-based drilling fluids and is environmentally friendly The drilling environment is demanding, and the prepared nano-polymer latex has multiple uses, not only as the main component of drilling fluid and completion fluid in oil field production, but also as a film in the leather industry and construction industry agent and coating industry as a dispersant.

The invention discloses an illegal cooking oil lubricant and a preparation method thereof. The illegal cooking oil lubricant comprises the following components in percentage by weight: 40%-60% of illegal cooking oil, 0.5%-1.5% of sodium sulfite, 1%-3% of sorbide oleate, 0.02%-0.04% of antioxidants, 0.2%-0.3% of extreme-pressure antiwear agents, 0.05%-0.1% of formaldehyde, 1.0%-1.2% of sodium hydroxide and the balance of water. Through the illegal cooking oil lubricant disclosed by the invention, the problem that torque and friction resistance are reduced through lubrication in the drilling process of a horizontal well is effectively solved, moreover, a new way is provided for the recycling of the illegal cooking oil, and the preparation cost of the lubricant can be reduced.

The invention relates to a high-temperature-resistant environment-protecting type drilling fluid lubricating agent. The high-temperature-resistant environment-protecting type drilling fluid lubricating agent mainly solves the problems that in the existing drilling process, the lubricating property is not high, high-temperature resistance and high-pressure resistance are low, and the drilling exploitation requirements of a deep well and an extradeep well are difficult to meet. The high-temperature-resistant environment-protecting type drilling fluid lubricating agent is characterized by comprising the following components in percentage by mass: 20 to 35 percent of plant oil, 20 to 40 percent of silicon oil, 5 to 10 percent of an anti-wear agent, 10 to 20 percent of a surfactant and 15 to 30percent of water. The preparation method of the drilling fluid lubricating agent comprises the following steps: (1) adding the silicon oil into the plant oil and performing stirring reaction; (2) mixing the surfactant and the anti-wear agent mixture according to the proportion in advance, performing stirring reaction, and mixing with the base oil in the step (1); (3) adding the water according tothe proportion, continuously performing stirring reaction and filtering to obtain a product. The high-temperature-resistant environment-protecting type drilling fluid lubricating agent can resist 150-DEG C temperature, is simple in synthesis process and convenient for on-site application, meets the environment-protecting requirement and is a high-performance liquid lubricating agent.

The present invention provides a biomass base oil prepared from natural fatty alcohol front distillate as a raw material. The invention provides a method for preparing a biomass base oil, which comprises: reacting a natural fatty alcohol front distillate, an alkyl reagent and an alkaline compound under the action of a catalyst to obtain the biomass base oil. The biomass base oil provided by the invention is a natural aliphatic hydrocarbon mixed ether, which has the characteristics of environmental protection, non-toxicity, strong lubrication, no fluorescence, high temperature resistance, salt resistance, calcium resistance and hydrolysis resistance, and is a lubricant with excellent performance. Use base oil. The preparation method of the biomass base oil provided by the invention has high reaction yield, good product quality, simple preparation method, mild conditions, non-toxicity, high efficiency and environmental protection in the preparation process.