31results about How to "Strong collapse resistance" patented technology

The invention discloses a product used for forming calcium magnesium injectable bone cement, comprising solid phase powder obtained by uniformly mixing composite phosphoric acid calcium salt and magnesium phosphate powder as well as curing solution obtained by dissolving dextrin and hydrophosphate in water. The invention also discloses a calcium magnesium injectable bone cement and preparation method and application thereof. The curing solution and solid phase powder in the product are uniformly mixed and blended into paste, thus obtaining water phase high efficiency scattering-resistant rapid curing bone cement capable of being injected with calcium magnesium and injectable product used for preparing bone tissue wound repairing. The invention is low in cost of raw materials, preparation method is simple, the obtained calcium magnesium injectable bone cement has strong scattering-resistance and rapid curing speed.

The invention discloses a deepwater drilling fluid. Every 1L of base slurry is composed of 1g of xanthan gum XC, 10-20g of sodium carboxymethyl cellulose, 20-30g of sulfonated phenol formaldehyde resin SMP-2, 30-50g of sodium silicate, 10g of polyvinylpyrrolidone PVP-K90, 15g of high modified asphalt KAHM, 50-100g of sodium chloride, 0.5g of sodium dodecyl benzene sulfonate, 0.5-1g of graphite and 0.2-0.5g of polyformaldehyde. The drilling fluid has the advantages of stable properties under cold conditions, favorable rheological behavior, high debris carrying capacity, excellent mud shale hydration expansion inhibition capacity, excellent hydrate generation inhibition capacity, low economic cost and small environmental pollution, and is especially suitable for deepwater drilling.

The invention provides an inorganic-organic polymer processing agent for drilling fluid polymerized from sulfonic acid monomer, carboxylic acid monomer, nonionic monomer and inorganic material in the presence of initiator, and the inorganic material includes bentonite. The inorganic-organic polymer processing agent for drilling fluid has good effect on filtration reduction effect in fresh water drilling fluid, brine drilling fluid, saturated brine drilling fluid and compound brine drilling fluid. The inorganic-organic polymer processing agent for drilling fluid has strong anti-sloughing capability and high permeability recovery, can control hydration and dispersion of the shale effectively, can control mud making of the clay effectively, and has good effect on hydrocarbon reservoir protection. Moreover, the preparation method is simple, the sources of raw materials are wide, and the promotion prospect is wide. The invention also provides a preparation method of inorganic-organic polymer processing agent for drilling fluid.

The invention relates to a treating agent for a zwitter-ion inorganic-organic monomer polymer drilling fluid and a preparation method of the treating agent, and belongs to the technical field of synthesis and preparation of a water-soluble polymer material. The preparation method comprises the following steps: adopting carboxylic acid monomers A, sulfonic acid monomers B, nonionic monomers C, cationic monomers D and inorganic material monomers E as raw materials; feeding the raw materials, wherein the ratio of the amounts of substances of the carboxylic acid monomers A to the sulfonic acid monomers B to the nonionic monomers C to the cationic monomers D is (5-40):(25-10):(65-35):(5-15), and the dosage of inorganic material monomers E is 5%-25% of the total mass of the carboxylic acid monomers A, the sulfonic acid monomers B, the nonionic monomers C, the cationic monomers D and the inorganic material monomers E; adopting water as a solvent, and initiating polymerization through an oxidation-reduction initiation system to obtain the treating agent. The treating agent has higher anti-collapse ability, can effectively control hydration and dispersion of clay shale and mud making of clay, has a better hydrocarbon reservoir protection effect, and is high in permeability recovering value, simple in production technology, extensive in raw material sources and wide in popularization prospects.

The invention relates to a drilling fluid for drilling of a fractured igneous rock formation and a preparation method of the drilling fluid in the field of petroleum drilling. The drilling fluid is prepared from components in parts by weight as follows: 1,000 parts of water, 3-4 parts of drilling fluid bentonite, 2-3 parts of sodium carbonate, 2-3 parts of a polymer coating agent, 2-3 parts of potassium polyacrylate or a metal cation polymer, 5-10 parts of an organic amine inhibitor, 20-30 parts of an anti-sloughing reinforced wall fixation agent, 20-30 parts of sulfonated phenol formaldehyderesin, 5-10 parts of a sulfonate copolymer filtrate reducer, 20-30 parts of walchowite, 10-20 parts of an anti-salt and temperature-resistant fluid loss agent, 20-40 parts of superfine calcium carbonate, 50-70 parts of potassium chloride, 0-10 parts of an organic anti-friction compound and 10-20 parts of a nano-micro blocking agent, and the weight is increased to 1.30-1.85 g/cm<3> with a density weighting agent. The drilling fluid has good temperature resistance and lubricating property and excellent inhibition property and anti-sloughing wall fixation property and can effectively prevent thefractured igneous rock formation from collapsing; the rock carrying capability of the drilling fluid can be substantially improved, repeated grinding of larger falling blocks nearby a drill bit is prevented, the frictional resistance is reduced, the mechanical drilling speed is increased, and underground safety is guaranteed.

The invention relates to environment-friendly chlorine-free drilling fluid, which is characterized in that the environment-friendly chlorine-free drilling fluid is prepared from the following components in percentages by weight: 8 to 18 percent of chlorine-free strongly inhibitory compound salt; 0.2 to 0.3 percent of drilling fluid tackifier; 1.5 to 3 percent of water-dispersible cationic emulsified asphalt powder; 0.2 to 0.4 percent of salt-resistant and calcium-resistant filtrate reducer; 0.2 to 0.5 percent of natural polymer filtrate reducer; 2 to 4 percent of acid-soluble temporarily plugged reservoir protection agent; 0.1 percent of caustic soda; and the balance of clean water. The environment-friendly, chlorine-free, low-density, low-solid phase, strong-chemical inhibition and anti-collapse drilling fluid can inhibit the collapse of mudstone sections under the condition of low density, and meets the friction drag reduction of long open hole sections with low solid phase.

The invention discloses a positive-charged polyglycol anti-collapse drilling fluid which mainly solves the problems of low anti-collapse capacity and narrow application range in the water-based drilling fluid in the prior art. The positive-charged polyglycol anti-collapse drilling fluid comprises the following components in parts by weight: 2-4 parts of sodium bentonite, 0.1-0.2 part of sodium carbonate, 3-5 parts of positive-charged polyglycol, 2-4 parts of high-molecule inhibitor, 2-4 parts of positive-charged wall protector, 0.5-3 parts of fluid loss additive for drilling fluids, 1-2 parts of plugging agent for drilling fluids, 4-6 parts of low-fluorescence water-based lubricant RY-838, 2-3 parts of low-fluorescence sulfonated asphalt and 100 parts of water. By blending the weighting agent, the density of the drilling fluid reaches 1.30-1.45 g/cm<3>. The positive-charged polyglycol anti-collapse drilling fluid has the advantages of high anti-collapse capacity, longer stability period, high temperature resistance, high solid-phase content, wide application range and the like.

The invention provides a naturally-degradable environment-friendly drilling fluid. The drilling fluid comprises the following components in parts by weight: 3.0%-7.0% of a shale inhibitor, 1.0%-3.0% of a natural anti-sloughing agent, 1.0%-5.0% of a natural blocking agent, 0.3%-0.5% of a natural viscosity-increasing cutting agent, 1.5%-3% of a natural fluid loss agent, 0.5%-4.0% of a lubricant, 0.1%-0.3% of polyhydroxymethyl hydroxyethyl siloxane, 0.02%-0.07% of an antioxidant and the balance of water. The drilling fluid can be applied to safe drilling and completion construction of exploratorywells, special process wells and horizontal wells in Changqing areas, six functions of stabilizing a well wall, preventing leakage and stopping leakage, carrying sand and suspending sand, purifying aborehole, protecting a reservoir and protecting the environment are realized, the drilling fluid has the characteristics of no biotoxicity, no chemical toxicity, biodegradability, environmental protection, strong anti-collapse ability, good plugging effect, effective reduction of stratum collapse ability, smooth and compact mud cake like a film, good lubricity, low damage to a low-porosity, low-permeability and low-abundance oil reservoir, and simple and feasible formula and slurry preparation process.

The invention discloses a multi-flue closed connecting bridge pipe for a clean coke oven. Corundum, mullite, pyrophyllite, boron nitride, cordierite, trace silicon carbide, Al2O3 micro powder, kaolinand a ZrO2 micro powder composite binder are taken as materials, compressive strength MPa is higher than or equal to 10, thermal conductivity at 350 DEG C is lower than or equal to 0.25, and porosity(%) is larger than or equal to 70. A gas collecting pipe is movably supported at the top end of a bridge pipe connecting section of the connecting bridge pipe, a bridge pipe inner masonry wall is built at the lower part of a pipe cavity of a bridge pipe diversion section, at least two high-temperature flue gas channels are formed in the bridge pipe inner masonry wall, and channel gates are inserted into upper openings of the high-temperature flue gas channels; a pipe top insulation layer and a pipe bottom insulation layer which are mutually connected are arranged circumferentially at the crosssection of the gas collecting pipe; gate insertion ports are formed in the pipe wall of an ascending pipe diversion section. The connecting bridge pipe not only has stable structure, low flue gas conveying resistance and high collapse resistance, but also can control the flow and rate of high-temperature flue gas in an ascending pipe, and coke forming quality is high.

The present invention provides an inorganic-organic polymer treatment agent for a drilling fluid, wherein the treatment agent is polymerized and formed by a sulfonic acid monomer, a carboxylic acid monomer, a nonionic monomer and inorganic material under the action of an initiator; and the inorganic material contains an aluminum-magnesium silicate inorganic gel. The inorganic-organic polymer treatment agent provided by the present invention has a relative strong reduction fluid loss effect in a fresh water drilling fluid, a saline water drilling fluid, a saturated saline water drilling fluid and a composite saline water drilling fluid, and further has a relative strong collapse prevention capability to control hydration and dispersion of mud shale and clay mud-making effectively. The recover value of permeability is high. The treatment agent has a relatively good hydrocarbon reservoir protecting effect. The inorganic-organic polymer treatment agent is simple in production process, wide in raw material sources, and vast in popularizing prospect. The present invention further provides a preparation method for the inorganic-organic polymer treatment agent for the drilling fluid.

The invention relates to a reinforcing method for a shield receiving tunnel portal. The reinforcing method comprises the steps that reinforcing piles are constructed in a soil body of a receiving tunnel at the receiving tunnel portal through a horizontal MJS construction method, and the reinforcing piles formed through construction are arranged around the periphery of a to-be-constructed segment so as to form a soil body reinforcing area; and after the to-be-reinforced piles reach certain strength, freezing construction is conducted on the soil body reinforcement area through a freezing method, so that a freezing waterproof curtain is formed on the periphery of the to-be-constructed segment, and reinforcement of the receiving tunnel portal is completed. According to the reinforcing method, the annular soil body reinforcing area is adopted, compared with full-section construction, the number of reinforcing piles is reduced, the cost can be reduced, and the construction period can be shortened. The freezing method is adopted for freezing to form the freezing waterproof curtain, frozen cement soil has high collapse resistance, the bearing capacity of the frozen cement soil is further improved, meanwhile, after cement is mixed into the soil body, the problems of frost heaving and thaw collapse generated in the horizontal freezing process can be effectively solved, and safe operation of surrounding buildings and structures is ensured.