79results about How to "Increase water injection" patented technology

The invention relates to a nano material-based water-based oil field injection agent and a preparation method thereof. The injection agent consists of 20 to 60 weight percent of diesel oil, 30 to 70 weight percent of surfactant, 1 to 10 weight percent of nano material and 1 to 20 weight percent of auxiliary agent, wherein the nano material is one or more of nano silicon dioxide, nano titanium oxide, nano magnesium oxide and nano aluminum oxide after surface modification. The preparation method thereof comprises the following steps that: firstly, weighing the diesel oil in proportion; secondly, adding the nano material in the diesel oil; thirdly, emulsifying and dispersing the mixture in an emulsifying machine; fourthly, adding the surfactant and the auxiliary agent into the emulsified and dispersed mixture; and finally, mechanically stirring to disperse the mixture at room temperature or in a water bath to obtain stock solution of the nano water-based injection agent. The injection agent can be mixed with water at any proportion to obtain homogeneous emulsified dispersion. After the emulsified dispersion is injected in the oil field through a specific process, the water injection pressure can be obviously reduced, the amount of water injection can be increased and the oil production efficiency can be improved so as to achieve the purpose of energy conservation and injection increase.

The invention relates to a coal seam water infusion device with high ground pressure, low porosity and low permeability, which comprises a static pressure water infusion device and a dynamic pressure water infusion device. The static pressure water infusion device comprises a static pressure water infusion supply pipe, a static pressure main pipeline stop valve, a first differential pressure typepenetrant continuous and quantitative adding pump, a static pressure flow divider, a static pressure branch pipeline, a static pressure branch pipeline stop valve and a static pressure flow meter. The dynamic pressure water infusion device comprises a dynamic pressure water infusion supply pipe, a water storage tank, a second differential pressure type penetrant continuous and quantitative addingpump, a water return pipe, a water infusion pump, a water quality filter, a pressure gauge, a dynamic pressure main pipeline stop valve, a dynamic pressure flow divider, a dynamic pressure branch pipeline, a dynamic pressure branch pipeline stop valve and a dynamic pressure flow meter.

The invention discloses a composite nanometer SiO<2> pressure-lowering and injection-augmenting agent and a preparation method thereof and belongs to the technical field of improvement of the crude oil recovery ratio in the oilfield waterflood recovery process in the petroleum industry. The composite nanometer SiO<2> pressure-lowering and injection-augmenting agent is composed of nanometer SiO<2>, anionic surfactant, surface modification agents and active water. The composite nanometer SiO<2> pressure-lowering and injection-augmenting agent is characterized in that good heat resistance is achieved, a good pressure-lowering and injection-augmenting effect is achieved at the temperature of 120 DEG C, the technological process is simple, operation is convenient, and meanwhile the problems of reduction of the pore diameter, blocking of a pore throat and the like caused by clay swelling and scale formation can be effectively inhibited. The composite nanometer SiO<2> pressure-lowering and injection-augmenting agent can be used for pressure-lowering and injection-augmenting of a low-permeability water injection well and can effectively supplement stratum energy, improve reservoir permeability and comprehensively improve the water injection development effect of an oil field.

The invention relates to a chemical pressure-reducing injection-increasing agent for an injection well and preparation and use thereof. The chemical pressure-reducing injection-increasing agent comprises the following components in percentage by weight: 0.03 to 0.3 percent of hexadecyl trimethyl ammonium bromide surfactant, 0.05 to 0.5 percent of MY/IMC-80BHH corrosion inhibitor, 0.1 to 0.3 percent of polyamino polyether methylene phosphonae, 0.01 to 0.03 percent of polyquaternium, 0.05 to 0.1 percent of citric acid, 0.1 to 0.5 percent of hydrochloric acid and the balance of water. The total amount of the injected water is 100 percent. The pressure-reducing injection-increasing agent is used in an amount which is 0.1 to 0.3 percent based on the weight of injected water. The pressure-reducing injection-increasing agent is added into a medicine adding device in a water injection station, uniformly mixed, pumped into a high-pressure pipe by a high-pressure pump and is injected into stratum with injected water to achieve a chemical pressure-reducing injection-increasing effect. The single-well pressure drop is about 15 percent.

The invention discloses a bridge cantilever box girder construction hanging basket pre-pressing loading device, which comprises a suspended truss, a suspended truss track, a pair of outer sliding girders, an upper cross girder, a suspended truss track movable trolley, a bottom die supporting frame and a plurality of suspended barrels; water is injected into the suspended barrels respectively; the suspended truss is supported against the suspended truss track; the suspended truss track is supported against a cast bridge cantilever box girder section through a plurality of rows of track bearing girders; the bottom die supporting frame comprises a plurality of lower longitudinal girders, and a front lower cross girder and a rear lower cross girder which are fixedly connected with the front and rear ends of the lower longitudinal girders; the two ends of the bottom die supporting frame are suspended below the suspended truss respectively; and the suspended barrels in which the water is injected are suspended below the front lower cross girder. According to the device, the pressing load of the bridge cantilever box girder to be cast on the bottom die supporting frame is simulated by using the water injection suspended barrels suspended below the front lower cross girder, and sectional loading can be flexibly realized; the device is low in use cost and can be repeatedly used, the load simulation test period can be shortened greatly, and the load simulation test cost can be reduced.

The invention discloses an immovable pipe column weak acid acidizing fluid for a water injection well, and relates to the technical field of injection well acidizing fluid formulas and injection well acidizing fluid preparation methods. The immovable pipe column weak acid acidizing fluid comprises the following components in percentage by weight: 10%-30% of acid liquor, 2%-8% of stabilizing agents, 1%-5% of corrosion inhibitors, 6.5%-17% of surface active agents and the balance of distilled water. The invention also provides a preparation method of the immovable pipe column weak acid acidizing fluid for the water injection well. The immovable pipe column weak acid acidizing fluid disclosed by the invention can enlarge the acidifying blocking removal radius of the water injection well, relieve the scaling near the well bore of the water injection well, prolong the effective period of the water injection well, realize the continuous mixing acidification of an immovable pipe column and simplify the construction procedure and not influence the normal production of the water injection well by synchronously carrying out water injection and acidification.

The invention discloses a multi-hydrogen acid construction process suitable for modification of a sandstone reservoir. The multi-hydrogen acid construction process suitable for modification of the sandstone reservoir successively comprises the following steps: step one, carrying out replacing on 10-20 m<3> of a pre-treating solution or a mutual solvent under the conditions that the discharge capacity is 0.1-0.5 m<3>/min, and the pump pressure is 1-34 MPa; step two, carrying out extrusion on 10-20 m<3> of pad-acid under the conditions that the discharge capacity is 0.1-0.5 m<3>/min, and the pump pressure is 1-34 MPa; step three, carrying out extrusion on 20-50 m<3> of main body acid under the conditions that the discharge capacity is 0.1-0.5 m<3>/min, and the pump pressure is 1-34 MPa; andstep four, carrying out extrusion on 5-20 m<3> of water well displacing liquid or oil well displacing liquid under the conditions that the discharge capacity is 0.2-1 m<3>/min and the pump pressure is1-34 MPa to finish acidification modification on the sandstone reservoir under a water well or an oil well. The multi-hydrogen acid construction process suitable for modification of the sandstone reservoir is used for carrying out augmented injection on an acidized horizon, blockage of a pore throat channel of a stratum is relieved, the water injection amount is increased, water injection pressure is reduced, the oil and gas recovery efficiency is improved, and compared with a conventional acidifying process, the multi-hydrogen acid construction process suitable for modification of the sandstone reservoir is more environmentally friendly and safer, and provides a safe operation condition for human beings, equipment and environments.

The invention discloses a three-chamber cervical balloon dilator, comprising: a balloon group, a rubber tube, an injection port and a plug; the first end of the rubber tube is connected to the injection port, the second end of the rubber tube is provided with a balloon group, and the The balloon group consists of a first balloon, a second balloon and a third balloon arranged in sequence at the second end of the rubber tube, the rubber tube is composed of a protective outer tube and an injection inner tube, and the rubber tube is located at the first balloon The first fixed opening, the second fixed opening and the third fixed opening are respectively set at the second balloon and the third balloon, wherein the first fixed opening, the second fixed opening and the third fixed opening are respectively connected with the three injection inner tubes The other ends of the three injection inner tubes pass through the protective outer tube and are fixedly connected to the injection interface, and the injection interface is provided with a needle core. The present invention can improve the ability of dilating the cervix to a greater extent, and has high application value for induction of labor in pregnant women with extremely low cervical score of full-term pregnancy or induction of labor in mid-term pregnancy.

The invention relates to pseudomonas aeruginosa YM4 CGMCC No.5243, and a culture method and application thereof. The culture method for the pseudomonas aeruginosa YM4 comprises the following steps: inoculating the pseudomonas aeruginosa YM4 into a fermentation culture medium; and cultivating in a shaking table at the temperature of 35 or 55 DEG C and at the rotating speed of 120 or 80 rpm, wherein the formula of the fermentation culture medium comprises glucose, peptone, corn paste, sodium nitrate, disodium hydrogen phosphate, potassium dihydrogen phosphate, magnesium sulfate and calcium chloride, and the pH value of the fermentation culture medium is 6.5 to 7.4. A biological surfactant generated by the pseudomonas aeruginosa YM4 can reduce oil water interface tension in the oil field; and after the action, the rheological property of the crude oil is obviously improved, viscosity is reduced, water injection pressure can be effectively reduced, water injection efficiency and recovery ratio of the crude oil can be improved; and large application prospect is achieved in the oil displacement process of the oil field.

The present invention provides a scale remover used for long-acting pressure decrease and injection increase of a water injection well, and the scale remover comprises the following components: 10-12 parts of Tween 80; 25-30 parts of 2-Phosphonobutane-1,2,4-tricarboxylic acid; 5-8 parts of dodecylbenzene sulfonic acid; 3-6 parts of an organosilicon surfactant; 2-5 parts of ethylene glycol butyl ether; 15-18 parts of n-butanol; 13-15 parts of polyamino polyether methylene phosphate and 12-14 parts of water. The scale remover has good anti swelling and swelling shrinkage capability and low surface and interface tension, and the scale remover reduces deformation work when liquid droplets pass through a narrow hole neck, reduces capillary resistance, greatly reduces the deformation work when the liquid droplets in a pore medium are pulled to spread on the surface of a rock so as to increase the moving speed of the liquid droplets in formation pores. After being injected into formation, the scale remover reduces the interfacial tension, meanwhile can restore an original water channel, reduce water injection pressure and improve water injection amount by dissolution of calcium carbonate, calcium sulfate and other precipitates near a wellbore area so as to ensure that the original water injection system is normal.

The invention discloses a low-permeability oil field coupling profile controlling and flooding method. The method comprises the following steps that 1, a water shutoff and profile control agent is taken to be uniformly added into carrying fluid, the addition quantity of the water shutoff and profile control agent accounts for 0.1%-0.3% of the mass of the carrying fluid, and the water shutoff and profile control agent and the carrying fluid are mixed and then stirred to be uniform to form stable suspended emulsion; 2, a well mouth of a measure well is opened, the suspended emulsion is injected into the well through a profile controlling and flooding pump truck; 3, after the injection work is finished, the well is not closed, water injection work continues to be conducted, the suspended emulsion reacts at the longitudinal deep position of a reservoir stratum under driving of succeeding water injection, and then the profile controlling and flooding and injection increasing purposes are achieved; 4, after water injection is conducted for 60 days, when the profile controlling and flooding effect is not obvious, that is to say, the water injection pressure is not decreased, or the water content of a peripheral corresponding oil well is not decreased, or the oil yield is not increased, the step 1 to the step 3 are repeatedly conducted according to the profile controlling and flooding effect and stopped until the profile controlling and flooding effect of a well group is obvious; 5, construction is finished. According to the method, water shutoff and profile control on water logging cracks are achieved, the water injection volume of the matrix reservoir stratum is increased, and the oil displacement effect of the matrix reservoir stratum is improved.

The invention provides a composite modifying and flooding agent. The composite modifying and flooding agent comprises 20-50 parts of a surfactant-type plugging agent, 30-70 parts of a decompression and augmented injection agent and 5-20 parts of a particle blocking agent. The surfactant-type plugging agent is prepared from polyacrylamide, water, a composite crosslinking agent, modified cyclodextrin, m-phenylenediamine, an oxygen scavenger and a carboxylate dimeric surfactant according to a weight ratio of 1: (110-131): (0.05-0.12): (0.2-0.8): (0.1-0.3): (0.05-0.2): (0.3-1). The surfactant-typeplugging agent, the decompression and augmented injection agent and the particle blocking agent are coupling and flooding key materials. Through the combination of a water shut-off and profile control technology and a decompression and augmented injection technology, the water shut-off and profile control, decompression and augmented injection, and oil displacement are effectively unified.

The invention discloses a washing machine water injection control method and a washing machine. According to the washing machine water injection control method, after a washing program starts to run, in response to the requirement of a user, the execution of the washing program can be interrupted at any time, and the next time of water injection is completed. According to the washing machine water injection control method, the requirement of the user can be met that after the washing program starts, that is, the washing machine completes the water injection, water is injected into the washing machine again for a certain time to automatically flush detergent added again into the inner drum, or the water injecting amount is increased to obtain a better clothes washing effect, the flexibility is good, and the experience effect of the user is promoted.

The invention provides a barium sulfate and strontium sulfate scale inhibitor, a preparation method and application thereof. In terms of a total weight of 100%, the scale inhibitor is prepared from the following raw materials by weight percentage: 10%-15% of a chelating agent; 1%-2% of an initiator; 3%-5% of phosphorous acid; 5%-10% of acrylic acid; 1%-2% of a regulator; 1%-2% of formaldehyde; 2%-4% of a surfactant; and the balance water. The scale inhibitor provided by the invention has stable performance and long service life, can be preserved and used for a long term, can effectively prevent shafts, surface pipelines and equipment from scaling, especially has good scale inhibition ability on calcium sulfate, barium sulfate, strontium sulfate, etc., and can ensure pressure-controlled water injection.

The invention discloses a heavy oil extraction system and method. The system includes a pipe column device, a water-injection regulating valve and a temperature controller. The pipe column device includes a sieve tube arranged in a horizontal well section, a water injection pipe, a short pipe and a temperature test tube, wherein the water injection pipe, the short pipe and the temperature test tube are arranged in the sieve tube; a sieve hole is formed in the sieve tube, and the temperature test tube is internally provided with several thermoelectric pairs used for monitoring the temperature of the horizontal well section; the water-injection regulating valve is arranged on the ground and used for adjusting the water injection amount of the water injection pipe; a temperature controller isarranged on the ground and connected with the thermoelectric pairs, and when the temperature of the horizontal well section is not in a preset temperature range, the temperature controller controls the regulating degree of the water-injection regulating valve to adjust the water injection amount of the water injection pipe, so that the temperature is in the preset temperature range. According tothe technical scheme, in the fireflooding combustion process, combustion is stably controlled, and the problems that in the horizontal-well fireflooding process, gas channeling causes burning of firewires and oxygen runs out from the horizontal well are prevented.

The invention discloses a dense single-layer sectional treatment method and a treatment device for a high-pressure under-injection well. The treatment device comprises a construction pipe column and two packers arranged at the lower end of the construction pipe column, and a ball valve is arranged at the lower end of the pipe column; in the treatment process, an oil layer is divided into a plurality of sections, and unblocking is conducted section by section from bottom to top through unblocking liquid; firstly, prepad fluid and the unblocking fluid are injected through the ball valve to unblock the oil layer section on the lowermost layer, then an annulus area of a sleeve corresponding to each oil layer section on the upper layer is repeatedly sealed through two packers, and the unblocking fluid is injected through a pressure valve to unblock the oil layer section until unblocking of each oil layer section is completed. According to the method, the unblocking liquid can be prevented from locally flowing and locally treating, it is ensured that the oil layer is sufficiently treated in the longitudinal and transverse directions, blockage can be removed effectively, the measure effect can be prolonged for a long time after treatment by the method, the water injection profile can be effectively improved, and the water flooding efficiency can be improved.

The invention discloses an acid-free neutral chelation blocking remover for an oil field. The blocking remover comprises, by weight, 6-9 parts of ricinoleic acid, 100-107 parts of a lithium-ion-dopingpolymer emulsion, 0.4-1 part of dichlord isocyanurice acid, 1-2 parts of a penetrating agent, 2-3 parts of 1-N-ethoxy-2-alkyl-imidazoline-ammonium-salt and 0.8-2 parts of a chelating agent. The blocking remover has low corrosivity, no waste acid is discharged in the blocking removal technology, and the blocking remover accords with the clean production principle.

The invention discloses an industrial glass fiber reinforced plastic cooling tower. The industrial glass fiber reinforced plastic cooling tower comprises a tower body, water absorption cotton threads,glass fiber reinforced plastic water baffles, a water spray pipe, spray nozzles and an induced draft fan body, wherein the induced draft fan body is fixed at the top end of the interior of the towerbody, the glass fiber reinforced plastic water baffles are arranged below the induced draft fan body, an embedding module is arranged below a heat dissipation packing layer, and air inlet pipes are arranged in the embedding module. The situations that small particles in air enter water along with the air and reach water spraying holes in the circulation process to result in blockage of the water spraying holes, consequently, a circulation system goes wrong, the cooling efficiency is reduced, water pipe holes are even broken due to blockage of the large amount of water spraying holes, and thenhot water is sprayed and brings threats to other people are avoided; the air inlet pipes can be adjusted up and down, the water injection amount can be increased, and the situation that water coolingis not timely and consequently the cooling tower is full of hot water and the cooling efficiency is reduced and a machine needing to be cooled is damaged to result in economic loss is avoided.

The invention discloses a blocking removal construction process for removing barium strontium calcium compound scale pollution. The process includes the steps: scale removal and blocking removal reverse replacement; clear water reverse replacement; soaking and dissolving; clear water positive extruding; scale removal and blocking removal liquid positive extruding; clear water reverse extruding. According to the process, blocking of near-well-bore areas is removed, pollution caused by inorganic scales such as barium sulfate, strontium sulfate and calcium sulfate with difficultly-dissolved acidis effectively removed by the aid of a non-acid blocking removal liquid system, oil and gas recovery efficiency is improved, blocking of formation pore throat channels can be effectively removed, water injection rate is increased, water injection pressure is reduced, and a foundation is laid for subsequent improvement of oil and gas recovery efficiency.