Abstract: A high temperature and high salinity-resistant complementarily rigid-flexible plugging agent, a method for preparing the same, and a water-based drilling fluid and a use thereof.

Abstract: The present disclosure relates to the technical field of oilfield chemistry, and discloses an anti-sloughing drilling fluid and a use thereof.

Abstract: A nanographene, a preparation method thereof, and uses thereof are disclosed. The method of preparing the nanographene includes the steps: (1) carrying out a first reaction by contacting a raw material graphite and a first oxidizing agent with an intercalating agent to obtain a modified graphite; (2) performing a second reaction by contacting the modified graphite and an acid with a second oxidizing agent to obtain a graphene pre-product; and (3) subjecting the graphene pre-product to an air-flow exfoliation to prepare a nanographene. An oil-based drilling fluid containing the nanographene produced by the method is also disclosed.

Abstract: A nanographene, a preparation method thereof, and uses thereof are disclosed. The method of preparing the nanographene includes the steps: (1) carrying out a first reaction by contacting a raw material graphite and a first oxidizing agent with an intercalating agent to obtain a modified graphite; (2) performing a second reaction by contacting the modified graphite and an acid with a second oxidizing agent to obtain a graphene pre-product; and (3) subjecting the graphene pre-product to an air-flow exfoliation to prepare a nanographene. An oil-based drilling fluid containing the nanographene produced by the method is also disclosed.

Abstract: A high temperature and high salinity-resistant complementarily rigid-flexible plugging agent, a method for preparing the same, and a water-based drilling fluid and a use thereof.

Abstract: A nano-organosilicon film-forming and hydrophobic shale surface hydration inhibitor is obtained by performing hydrophobic modification for nano-particles through long-chain organosilicon together with a surface-active agent. A preparation method of the said hydrophobic shale surface hydration inhibitor comprises steps as follows: nano-particles are added to the solvent under stirring conditions, and then an ultrasonic dispersion is performed; upon the end of the ultrasonic dispersion, the reaction system is adjusted to a pH of 9-11 to obtain mixed solution A; a long-chain organosilicon solution is then dropwise added to the mixed solution A for reaction under stirring conditions to obtain mixed solution B; a surface-active agent is added to the mixed solution B for reaction under stirring conditions; upon the reaction is finished, part of the solvent is removed to obtain the inhibitor.

Abstract: An oil-soluble thermosensitive resin lost circulation material for protecting a reservoir includes the following raw materials in parts by weight: 40-60 parts of resin matrix, 15-40 parts of modified asphalt, 5-12 parts of viscosity modifier, 2-5 parts of cross-linking agent, 6-15 parts of softening point modifier, and 1-3 parts of dispersant; it further provides a method for preparing the resin lost circulation material; the resin lost circulation material can melt and adhere in different temperature ranges, rapid plugging is realized, and the plugging time is long; the oil-soluble thermosensitive resin lost circulation material can be dissolved by oil flow during oil well production, so that the reservoir permeability is recovered, so as to achieve the purpose of protecting the hydrocarbon reservoir.

Abstract: The present disclosure to a cementitious plugging wall solidifier for water-based drilling fluid and a preparation method thereof and a water-based drilling fluid.

Abstract: The present disclosure relates to the technical field of oilfield chemistry. A flocculating agent for removing oil-based drilling fluid rock cuttings and a preparation method and a use thereof.

Abstract: The present discloses a water-based gel-consolidation type lost circulation material system suitable for fractured lost circulation formation, preparation method and use thereof.

Abstract: A high-temperature resistant, high-strength, and thixotropic gel plugging agent is composed of 8-20% of acrylamide monomer, 0.05-0.5% of reactive polymer, 0.1-1.0% of organic polymer cross-linker, 3.0-8.0% of resin toughening agent, 1.0-5.0% of flow pattern regulator, 0.01-0.5% of cross-linking regulator by the weight in the water. The gel solution shows a low apparent viscosity during the shear flow and is easy to be pumped into the wellbore and then into the formation leakage layer; after the pumping stops, the gel solution shows rapidly increased viscosity and strong adhesive force, and form a high-strength barrier between the wellbore and the formation, preventing the drilling fluid from further leaking.

Abstract: A nano-organosilicon film-forming and hydrophobic shale surface hydration inhibitor is obtained by performing hydrophobic modification for nano-particles through long-chain organosilicon together with a surface-active agent. A preparation method of the said hydrophobic shale surface hydration inhibitor comprises steps as follows: nano-particles are added to the solvent under stirring conditions, and then an ultrasonic dispersion is performed; upon the end of the ultrasonic dispersion, the reaction system is adjusted to a pH of 9-11 to obtain mixed solution A; a long-chain organosilicon solution is then dropwise added to the mixed solution A for reaction under stirring conditions to obtain mixed solution B; a surface-active agent is added to the mixed solution B for reaction under stirring conditions; upon the reaction is finished, part of the solvent is removed to obtain the inhibitor.

Abstract: A high temperature-resistant and high oil-absorption resin particle plugging agent suitable for oil-based drilling fluid and its preparation method is prepared from raw materials in parts by mass as follows: 15-30 parts of reaction monomers, 5-12 parts of linear high polymers, 0.1-1.5 parts of cross-linking agents, 0.1-0.5 parts of initiators, 1-3 parts of modified starches, 1-5 parts of filler particles and 1-5 parts of dispersing agents; it has high oil absorption capacity under a high-temperature condition and high toughness after oil-absorbing expansion.

Abstract: The present disclosure provides a preparation method of an environment-friendly high-temperature resistant water-based drilling fluid plugging anti-sloughing agent, the preparation method comprises the following steps: mixing and emulsifying a styrene monomer, an acrylic monomer and an emulsifier MS-1 aqueous solution to prepare a pre-polymerization emulsion; dispersing hydrophilic monomer, cationic monomer and an emulsifier MS-1 in water, adjusting the pH to be within a range of 6.5-8.

Abstract: The present disclosure provides a preparation method of an environment-friendly high-temperature resistant water-based drilling fluid plugging anti-sloughing agent, the preparation method comprises the following steps: mixing and emulsifying a styrene monomer, an acrylic monomer and an emulsifier MS-1 aqueous solution to prepare a pre-polymerization emulsion; dispersing hydrophilic monomer, cationic monomer and an emulsifier MS-1 in water, adjusting the pH to be within a range of 6.5-8.

Abstract: The invention presents a high temperature-resistant and high oil-absorption resin particle plugging agent suitable for oil-based drilling fluid and its preparation method, wherein the plugging agent is prepared from raw materials in parts by mass as follows: 15-30 parts of reaction monomers, 5-12 parts of linear high polymers, 0.1-1.5 parts of cross-linking agents, 0.1-0.5 parts of initiators, 1-3 parts of modified starches, 1-5 parts of filler particles and 1-5 parts of dispersing agents. The resin particle plugging agent presented in the invention not only has high oil absorption capacity under a high-temperature condition, but also has high toughness after oil-absorbing expansion. It is not easy to break by extrusion and stretching and can effectively plug a high-temperature leakage passage. Also, the resin plugging particles in it will not be affected by crack factors.

Abstract: The invention provides a high-temperature resistant, high-strength, and thixotropic gel plugging agent and its preparation method and application. The said gel plugging agent is composed of raw materials in the following mass percent: 8-20% acrylamide monomer, 0.05-0.5% reactive polymer, 0.1-1.0% organic polymer cross-linker, 3.0-8.0% resin toughening agent, 1.0-5.0% flow pattern regulator, 0.01-0.5% cross-linking regulator, and water in the remaining percentage.

Abstract: A data processing apparatus is provided comprising a front-end interface electronically coupled to a main processor. The front-end interface is configured to receive data stored in a repository, in particular an external storage and/or a network, determine whether the data is a single-access data or a multiple-access data by analyzing an access parameter designating the data, route the multiple-access data for processing by the main processor, and route the single-access data for pre-processing by the front-end interface and routing results of the pre-processing to the main processor.

Abstract: A data processing apparatus is provided comprising a front-end interface electronically coupled to a main processor. The front-end interface is configured to receive data stored in a repository, in particular an external storage and/or a network, determine whether the data is a single-access data or a multiple-access data by analyzing an access parameter designating the data, route the multiple-access data for processing by the main processor, and route the single-access data for pre-processing by the front-end interface and routing results of the pre-processing to the main processor.

Abstract: The present invention relates to a device and method for measuring supercritical carbon dioxide fracturing fluid throttling coefficient under different viscosities. The device for measuring supercritical carbon dioxide fracturing fluid throttling coefficient under different viscosities comprises a supercritical carbon dioxide fracturing fluid throttling coefficient measurement system and a supercritical carbon dioxide fracturing fluid viscosity adjustment apparatus; the supercritical carbon dioxide fracturing fluid throttling coefficient measurement system determines throttling coefficient of a high temperature and high pressure supercritical carbon dioxide fracturing fluid, and the supercritical carbon dioxide fracturing fluid viscosity adjustment apparatus determines viscosity of the high temperature and high pressure supercritical carbon dioxide fracturing fluid.