33results about How to "Increase the range of viscoelastic use" patented technology

The invention provides whole oil-based drilling fluid and a preparation method thereof. The drilling fluid comprises base oil and an additive, and the additive comprises a performance modifier. The performance modifier contains modified high-softening point asphalt composition particles, and the asphalt composition particles comprise the following components in parts by weight: 50-80 parts of high-softening point asphalt, and 20-50 parts of rubber powder particles; the high-softening point asphalt covers the rubber powder particles, and the softening point is 120-220 DEG C. Average particle size of the high-softening point asphalt composition particles is less than 60 mesh. The drilling fluid solves the problems of plugging and bad leak-off reduction effect, because good particle state and high temperature deformation capability cannot be kept due to extra high oil solubility, when the high-softening point asphalt is applied to oil base drilling fluid. The drilling fluid can be widely applied to a deep oil gas drilling operation process.

The invention provides a water-in-oil based drilling fluid. The water-in-oil based drilling fluid comprises 0.5 to 5% of a main emulsifier, 0.1 to 3% of an auxiliary emulsifier, 1 to 3% of organic soil and 1 to 5% of a performance regulator, with the balance being base oil and water, wherein the performance regulator is a modified high-softening-point asphalt particle which comprises a core composed of grafted activated asphalt and a shell formed by a modifying agent; the asphalt particle is obtained through the following steps: respectively spraying melted grafted activated asphalt and meltedsulfur from the upper and lower ends of a reaction tower, carrying out countercurrent contact, spraying a product into a quenching liquid, and carrying out quenching; and the drilling fluid is obtained by mixing the above-mentioned components. The drilling fluid provided by the invention employs the high-softening-point asphalt particle as a regulator, and the high-softening-point asphalt particle can remain good particular state and high-temperature deformability in the water-in-oil based drilling fluid, so the effects of plugging and filtration reduction are improved.

The invention discloses a modified epoxy asphalt particle, a water-in-oil base drilling fluid and a preparation method thereof. The modified epoxy asphalt particles include a core made of epoxy asphalt and a shell formed by a modifier. In parts by mass, the core is 7-9 parts, and the shell is 1-3 parts; the modifier includes Polymerized sulfur and free sulfur, the weight ratio of polymerized sulfur and free sulfur in the modifier is 3:7~7:3. The water-in-oil-based drilling fluid, in terms of mass fraction, includes 0.5% to 5% of the main emulsifier, 0.1% to 3% of the auxiliary emulsifier, 1% to 3% of organic soil, and 1% to 5% of modified epoxy asphalt particles. %, the balance is oil-water base. The water-in-oil drilling fluid of the present invention uses modified epoxy asphalt particles as a performance regulator, which can maintain a good particle state and high-temperature deformation ability in the water-in-oil drilling fluid, and improves plugging and fluid loss reduction Effect.

The invention provides a water-in-oil based drilling fluid. The water-in-oil based drilling fluid comprises the following components by weight: 0 to 3 parts of an emulsifier, 1 to 3 parts of organic soil, 1 to 5 parts of a performance regulator, 100 parts of an oil-water base, and a weighting agent which enables the density of the drilling fluid to reach 1.50 to 2.10 g / cm<3>, wherein the performance regulator is a modified asphalt particle which contains asphalt and a modifier; the modifier contains polymeric sulfur and free sulfur; the content of a sulfur element accounts for 10 to 40% of thetotal amount of the modified asphalt particle by weight; the content of the polymeric sulfur accounts for 30 to 70% of the total amount of the sulfur element by weight; and the total particle size ofthe modified asphalt particle is no more than 150 [mu]m. The drilling fluid provided by the invention utilizes the modified asphalt particle as the regulator, and the asphalt particle with a high softening point can maintain good particle state and high-temperature deformation ability in the water-in-oil based drilling fluid, so the effects of plugging and filtrate loss reduction are improved.

The invention discloses an asphalt composition granule, a preparation method and application thereof, and comprises the following components in parts by weight of the asphalt composition granule: 80-95 parts of modified high-softening-point asphalt granules, and 5-20 parts of latex. The modified high softening point asphalt granule comprises the following components in parts by weight: 50-80 parts of high softening point asphalt, and 20-50 parts of rubber powder particles. The modified high softening point asphalt particles are 60-80 mesh, 80-120 mesh, 120-140 mesh or more than 140 mesh, and the combination of two or more different particle size distributions. The preparation method includes the following contents: evenly spray latex onto the modified high softening point asphalt particles, let it stand for a period of infiltration, and vacuum freeze-dry to obtain the asphalt composition particles. The asphalt composition particles of the invention have higher softening point, better high-temperature performance and deformation ability, simple preparation method and convenient operation, and can have good plugging and fluid loss reduction effects in deep drilling.

The invention provides water-in-oil drilling fluid and a preparation method thereof. The drilling fluid comprises an oil phase, a water phase and an additive; the additive comprises high-softening point asphalt composition particles, a promoter, a modifier, and an emulsifier. Addition of the high-softening point asphalt composition particles is 1-5% of the total mass of the drilling fluid. Average particle size of the high-softening point asphalt composition particles is less than 60 mesh. The drilling fluid solves the problems of plugging and bad leak-off reduction effect, because good particle state and high temperature deformation capability cannot be kept due to extra high oil solubility, when the high-softening point asphalt is applied to oil base drilling fluid. At the same time, heat stability and electrical stability of the water-in-oil drilling fluid are substantially improved, so that the drilling liquid can be widely applied to the process of deep oil gas drilling operation.

The invention discloses a modified epoxy asphalt particle and a full-oil-based drilling fluid, and preparation methods thereof. The modified epoxy asphalt particle comprises a core composed of epoxy asphalt and a shell formed by a modifier. The epoxy asphalt is prepared by subjecting raw asphalt and organic acid anhydride to grafting activation and then carrying out a reaction with epoxy resin anda curing agent. The full-oil-based drilling fluid comprises, by weight, 90 to 95 parts of base oil, 1 to 3 parts of organoclay, 1 to 5 parts of an emulsifier and 1 to 6 parts of the modified epoxy asphalt particle. The modified epoxy asphalt particle is prepared by respectively spraying molten epoxy asphalt and molten sulfur from the upper end and the lower end of a reaction tower for counter-current contact and quenching a product in a quenching solution. The drilling fluid is prepared by mixing all the components. According to the invention, the modified epoxy asphalt particle is used as aperformance regulator and can maintain good particle state and high-temperature deformation capability in the drilling fluid, so plugging and fluid-loss-reducing effects are improved.

The invention discloses a modified asphalt particle and a preparation method thereof. According to the weight part of the modified asphalt particle, it comprises the following components: 15-60 parts of high softening point asphalt I; 10-50 parts of high softening point asphalt II; 20 to 50 parts of powder particles; the high softening point asphalt II is wrapped outside the rubber powder particles, and the high softening point asphalt I is wrapped outside the high softening point asphalt II; wherein the softening of the high softening point asphalt II and the high softening point asphalt I The spread is 10~25℃. The modified asphalt particles of the invention have high softening point, excellent high temperature performance, simple preparation method, can continue to play a role in drilling operation conditions with a wide temperature range during deep drilling, and play a good role in plugging and reducing filtration loss. Effect.

The invention discloses high-softening-point asphalt particles for drilling fluid. The high-softening-point asphalt particles comprise the following components in percentage by weight: 80-95 % of a high-softening-point asphalt composition, and 5-20 % of rubber latex, wherein the high-softening-point asphalt composition is a mixture of two or more than two kinds of high-softening-point asphalt of which the softening point ranges from 120 DEG C to 240 DEG C; the difference between softening points of adjacent high-softening-point asphalt of which the softening points are from low to high is 5-50 DEG C. The high-softening-point asphalt particles have a relatively high softening point and deformation capability, and can play function continuously under drilling operation condition with a relatively wide temperature range.

The invention discloses a modified asphalt composition granule and a preparation method thereof, which comprises the following components in parts by weight of the asphalt composition granule: 50-80 parts by weight of high softening point asphalt, and 20-50 parts by weight of rubber powder particles. The preparation method includes the following steps: heating high-softening-point asphalt to a molten state, uniformly spraying it on rubber powder particles, standing for a period of infiltration, and vibrating and pulverizing in a vibrating sieve after freezing to obtain asphalt composition particles. The asphalt composition particles of the invention have higher softening point, better high-temperature performance and deformability, simple preparation method and convenient operation, and can have good plugging and fluid loss reduction effects in deep drilling.

The invention discloses a method for preparing high softening point asphalt composition particles, which includes the following contents: (1) fully mixing high softening point asphalt and a compatibilizer to prepare asphalt mother liquor, and then evenly spraying the asphalt mother liquor on the glue (2) The material obtained in step (1) is sent to the reactor, and compressed gas is introduced from the bottom of the reactor for blow-off treatment, and the compatibilizer is in gas phase and exits from the upper part of the reactor It is discharged and can be recycled after being cooled. After the stripping is completed, the stripping product is cooled to room temperature, then frozen and pulverized to obtain high softening point asphalt composition particles. The high softening point asphalt composition particles of the present invention have a higher softening point, better high temperature performance and deformation ability, and have better dispersibility, and can be applied to water-based drilling fluids. The preparation method is simple and the operation is convenient. It can play a good plugging and fluid loss reduction effect in deep drilling.

The invention provides a water-in-oil based drilling fluid. The water-in-oil based drilling fluid comprises the following components by weight: 0 to 3 parts of an emulsifier, 1 to 3 parts of organic soil, 1 to 5 parts of a performance regulator, 100 parts of an oil-water base, and a weighting agent which enables the density of the drilling fluid to reach 1.50 to 2.10 g / cm<3>, wherein the performance regulator is a modified asphalt particle which contains asphalt and a modifier; the modifier contains polymeric sulfur and free sulfur; the content of a sulfur element accounts for 10 to 40% of thetotal amount of the modified asphalt particle by weight; the content of the polymeric sulfur accounts for 30 to 70% of the total amount of the sulfur element by weight; and the total particle size ofthe modified asphalt particle is no more than 150 [mu]m. The drilling fluid provided by the invention utilizes the modified asphalt particle as the regulator, and the asphalt particle with a high softening point can maintain good particle state and high-temperature deformation ability in the water-in-oil based drilling fluid, so the effects of plugging and filtrate loss reduction are improved.

The invention provides an all-oil based drilling fluid. The all-oil based drilling fluid comprises 90 to 95 parts of base oil, 1 to 3 parts of organic soil, 1 to 5 parts of an emulsifier and 1 to 6 parts of a performance regulator, wherein the performance regulator is a modified high-softening-point asphalt particle which comprises 7 to 9 parts of a core composed of base asphalt and 1 to 3 parts of a shell formed by a modifying agent in parts by mass; the modifying agent comprises polymeric sulfur and free sulfur with a weight ratio of 3: 7 to 7: 3; the asphalt particle is obtained through thefollowing steps: respectively spraying melted base asphalt and melted sulfur from the upper and lower ends of a reaction tower, carrying out countercurrent contact, spraying a product into a quenching liquid, and carrying out quenching; and the drilling fluid is obtained by mixing the above-mentioned components. The drilling fluid provided by the invention employs the high-softening-point asphaltparticle as a regulator, and the high-softening-point asphalt particle can remain good particular state and high-temperature deformability in the all-oil based drilling fluid, so the effects of plugging and filtration reduction are improved.

The invention discloses an asphalt composition particle and a preparation method thereof. The asphalt composition particle comprises the following components in percentage by weight: 80-95% of high-softening-point asphalt particles and 5-20% of latex. The preparation method of the asphalt composition particle comprises the following steps: the latex is uniformly sprayed onto the high-softening-point asphalt particles, the high-softening-point asphalt particles stand still for a period of time so that the latex can permeate, and then are subjected to vacuum freezing drying, and the asphalt composition particles are obtained. The asphalt composition particles have high softening point, good high-temperature performance, simple preparation method, convenience for operation and good blocking and de-filtration effects during deep drilling.

The invention provides water-in-oil drilling fluid and a preparation method thereof. The drilling fluid comprises an oil phase, a water phase and an additive; the additive comprises high-softening point asphalt composition particles, a promoter, and an emulsifier. Addition of the high-softening point asphalt composition particles is 1-5% of the total mass of the drilling fluid. Average particle size of the high-softening point asphalt composition particles is less than 60 mesh. The drilling fluid solves the problems of plugging and bad leak-off reduction effect, because good particle state and high temperature deformation capability cannot be kept due to extra high oil solubility, when the high-softening point asphalt is applied to oil base drilling fluid. At the same time, when the water content in the water-in-oil drilling fluid is high, the problems that heat stability and electrical stability become bad are solved by means of synergistic effects of the appropriate main emulsifier, the auxiliary emulsifier and the high-softening point asphalt composition particles; the drilling fluid can be widely applied to the deep oil gas drilling operation process.

The invention discloses a latex modified asphalt composition granule and a preparation method thereof. The latex modified asphalt composition granule of the present invention comprises the following components: 80wt%-94wt% of high softening point asphalt granules; 5wt%-20wt% of latex %; wherein, the high softening point asphalt granules, with the high softening point asphalt I as the core phase, the outer layer wraps the high softening point asphalt II, and the softening point difference between the high softening point asphalt II and the high softening point asphalt I is 10-25 ℃. The preparation method is as follows: the latex is uniformly sprayed on the high softening point asphalt composition, allowed to permeate for a period of time, and vacuum freeze-dried to obtain the modified asphalt composition particles. The modified asphalt composition particles of the present invention have a relatively high softening point, excellent high-temperature performance, simple preparation method, and can continue to play a role in drilling operation conditions with a wide temperature range during deep drilling, and play a good role in plugging and reducing filter loss effect.

The invention discloses a modified epoxy asphalt particle, a full oil base drilling fluid and a preparation method thereof. The composition of the modified epoxy asphalt particles includes modified asphalt, epoxy resin and curing agent, wherein the composition of the modified asphalt includes base asphalt, rubber powder and octene polymer rubber reactant. The full oil-based drilling fluid includes base oil, organic soil, emulsifier and the modified epoxy asphalt particles. The invention adopts the modified epoxy asphalt particles as the performance regulator, which can maintain a good particle state and high-temperature deformation ability in the full oil-based drilling fluid, and improves the effects of plugging and fluid loss reduction.

The invention discloses a high-temperature resistant water-based drilling fluid and a preparation method thereof. The high-temperature resistant water-based drilling fluid comprises the following components in percentage by mass: 85%-97% of basic mud and 3%-15% of asphaltic liquid of a high softening point. The preparation method comprises the following steps: (1), adding asphaltic raw materials of a high softening point into water for performing crushing, adding a stable dispersant, and uniformly mixing the crushed asphaltic raw materials and the stable dispersant so as to obtain the asphaltic liquid of the high softening point; (2),uniformly mixing the asphaltic liquid of the high softening point, a performance modifying agent and the basic mud so as to obtain the high-temperature resistant water-based drilling fluid. In the water-based drilling fluid disclosed by the invention, the dispersion of asphaltic particles of a high softening point is uniform and stable; the water-based drilling liquid is high in high temperature resistance and filtration resistance; the preparation method is simple and convenient, the cost is reduced, and the applied range is wide.

The invention provides whole oil-based drilling fluid and a preparation method thereof. The drilling fluid comprises base oil and an additive, and the additive comprises a performance modifier. The performance modifier contains modified high-softening point asphalt composition particles, and the asphalt composition particles comprise the following components in parts by weight: 50-80 parts of high-softening point asphalt, and 20-50 parts of rubber powder particles; the high-softening point asphalt covers the rubber powder particles, and the softening point is 120-220 DEG C. Average particle size of the high-softening point asphalt composition particles is less than 60 mesh. The drilling fluid solves the problems of plugging and bad leak-off reduction effect, because good particle state and high temperature deformation capability cannot be kept due to extra high oil solubility, when the high-softening point asphalt is applied to oil base drilling fluid. The drilling fluid can be widely applied to a deep oil gas drilling operation process.

The invention discloses modified asphalt composition particle and its preparation method. The modified asphalt composition particle comprises the following ingredients (by weight): 15-60 parts of high softening point asphalt I, 10-50 parts of high softening point asphalt II and 20-50 parts of rubber powder granule. The high softening point asphalt II coats the rubber powder granule. The high softening point asphalt I coats the high softening point asphalt II. Softening point difference of the high softening point asphalt I and the high softening point asphalt II is 15-50 DEG C. The modified asphalt composition particle of the invention has high softening point and excellent high temperature performance. The preparation method is simple. The product can continuously play a role in deep well drilling under the drilling operation condition of wide temperature range, and has good plugging and filtration-reducing effects.