7 results about "Water wet" patented technology

1. Name of the designed product: packing bag (EDI pure water wet tissue). 2. Use of the designed product: for packing. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo best indicating the design points: perspective view.

The inclined water-retaining wet film device comprises the refrigeration core body and the water-retaining wet curtain, the refrigeration core body is arranged in an inclined mode, the included angle between the refrigeration core body and the ground is 45 degrees, the water-retaining wet curtain is arranged on the back portion of the refrigeration core body, the water-retaining wet curtain comprises the first wet curtain paper and the second wet curtain paper, the water-retaining wet curtain is used for replacing a traditional water-retaining plate, and the water-retaining wet curtain is arranged on the back portion of the refrigeration core body. The wet curtain can be mounted on the leeside of the core to replace a water baffle, and the angle of the wet curtain can be flexibly adjusted according to the mounting angle of the core, so that the water retaining effect is optimal; after the water retaining wet curtain is inclined by 45 degrees, two water channels are formed in a water flow channel, water flows to the leeward side of the water channel I, a small amount of water permeates to the air inlet side, the included angle between the water channel I and the horizontal plane is 10 degrees downwards, the angle is gentle, the wet curtain is made of a water absorption material, water can be effectively retained, and wind resistance can be effectively reduced; the water flows to the leeward side of the water channel II, and the included angle between the water channel II and the horizontal plane is 10 degrees downwards. The two water paths guide water flow downwards, and effective water retaining is achieved.

The application discloses a multifunctional plugging removing agent for oil extraction and acidification of oil fields and a preparation method thereof. The plugging removing agent comprises the following raw materials in percentage: 10-15% of hydrochloric acid, 5-8% of formic acid, 5-8% of citric acid, 0.3-0.5% of OP-10 and 1-1.5% of a modified additive, and the balance is water. In the using process of the acidification plugging removing agent, the modified additive can reduce the interfacial tension, change the rock surface into water wettability, make the residual acid after reaction and loose particles more easily carried back, significantly improve the permeability recovery rate, the nano silicon dioxide in the modified additive can fill the cavity of the surface polysiloxane chain segment, can prevent the curling of the polysiloxane chain segment and the collapse of the network structure, and further improve the salt resistance of the modified additive, ensure the penetration effect of the acid liquid, the cage type silsesquioxane structure on the surface can form a dense three-dimensional network, greatly improve the mechanical strength, shear resistance and long-term thermal stability of the oil displacement system, and is not easy to degrade and fail.

The invention relates to a shale oil reservoir rock different-scale pore throat wettability quantitative evaluation method which comprises the following steps: (1) cutting a rock core into two equal-length standard plunger sample rock cores C1 and C2, drying the rock cores C1 and C2, and determining a dry sample nuclear magnetic resonance T2 spectrum of the rock cores C1; (2) respectively saturating the core C1 and the core C2 with oil and heavy water, and then measuring the nuclear magnetic resonance T2 spectrum of the core C1 and the core C2; (3) respectively self-absorbing heavy water and oil by the rock core C1 and the rock core C2, and then measuring the nuclear magnetic resonance T2 spectrum; (4) drying the rock core C2, and measuring the nuclear magnetic resonance T2 spectrum of the rock core C2 after the rock core C2 is saturated with oil; (5) drying the rock core C1 and carrying out a high-pressure mercury injection test on the rock core C1; and (6) quantitatively evaluating the wettability of the whole rock core and pore throats with different scales. The method can quantitatively characterize the proportions of water-wetted, oil-wetted and neutral-wetted pore throats in different scales and the whole pore throats aiming at the pore throats of saturable oil in the rock core, so as to realize wettability evaluation.

The invention relates to the technical field of civil engineering materials, and discloses a low-hydration-heat self-repairing anti-crack concrete composition and a preparation method thereof, and the concrete composition comprises the following components: a composite cementing material system; performing three-stage optimization on an aggregate grading system; a temperature-sensitive phase change microcapsule; the microbial remediation aggregate is internally provided with a hydrogel controlled-release nutrient source; pH response type chemical repair microspheres; a polycarboxylic acid efficient shrinkage reducing agent; the temperature-sensitive phase change microcapsule comprises a shell and an inner core; the preparation method of the concrete composition comprises the following steps: S1, prefabricating the microbial remediation aggregate with the built-in hydrogel; s2, premixing the cementing material and the aggregate; s3, adding functional components at a low speed to prevent damage; and S4, adding water, performing wet mixing, forming and curing. According to the invention, the temperature is cooperatively controlled through the phase change microcapsule and the hydrogel, and a water / pH double-response serialized repairing system is constructed, so that the beneficial effects of low hydration heat, high crack resistance and efficient long-acting self-repairing are achieved.

The present application relates to the technical field of oil and gas well cementing engineering, and particularly relates to a cementing cement microcrack self-repairing material, a preparation method and application thereof. The cementing cement microcrack self-repairing material is prepared by using an emulsion copolymerization method, and the raw material composition comprises the following components in parts by weight: deionized water 30 parts, monomer 3-12 parts, crosslinking agent 0.03-0.09 parts, initiator 0.06-0.3 parts, natural latex 3-20 parts, surfactant 1.5-3 parts, and filler 0.03-1.5 parts. The self-repairing material obtained by the present application has high liquid absorption rate in a weak acid solution, high swelling rate in the presence of carbon dioxide, and excellent mechanical properties. The self-repairing material can be added into a cementing fluid system, and is used in the environment of supercritical CO2 and CO2 formation water, two kinds of corrosive media in a water-wet environment, to seal the leakage channel of a wellbore and improve the sealing integrity of the wellbore.

The present application provides an oil and gas reservoir water lock chemical agent, a preparation method and application thereof. The oil and gas reservoir water lock chemical agent is prepared from raw materials including anionic fluorine surfactant, zwitterionic surfactant, synergistic adjuvant and solvent; the anionic fluorine surfactant is 1-40% of the total weight of the oil and gas reservoir water lock chemical agent; the zwitterionic surfactant is 1-40% of the total weight of the oil and gas reservoir water lock chemical agent; the synergistic adjuvant is 0.5-20% of the total weight of the oil and gas reservoir water lock chemical agent; and the rest is solvent. The prepared water lock chemical agent has mutual interaction and synergistic effect among the components, greatly reduces the surface tension of water, can regulate the surface of strong water-wet matrix to neutral wetting, has low apparent viscosity and low cost, and has better stability.