125 results about "Penetrating oil" patented technology

A elongated plunger assembly for pressurized, conduit-enclosed travel utilized in recovery of hydrocarbon deposits in a ground penetrating oil or gas well. The plunger comprises an elongated mandrel, a plurality of radially movable curvilinear wear pads circumferentially disposed adjacent each end of the elongated mandrel, a pad-edge retaining housing extending on at least one end of the elongated mandrel to enclosably retain the longitudinally distal end of a circumferential array of wear pads onto the mandrel, and a centrally disposed wear pad securement ring arrangement to permit release of a worn wear pad, replacement of the worn wear pad at an inner longitudinal edge thereof, thus to permit simple field-accessable removal and replacement of any particular “conduit-worn”“wear” pad from the mandrel of the plunger.

The invention provides a visualized plane sand packing model for oil displacement experiments. The visualized plane sand packing model comprises a bottom plate and a surface plate, wherein the surface plate is arranged at the top end of the bottom plate, a square groove for containing a packing matter is formed in the center of the bottom plate, a first thread hole and a second thread hole are clockwise formed in the side edges of the square groove, a third thread hole and a fourth thread hole are clockwise formed in the opposite edges of the side edges of the square groove, a first two-way joint is externally connected with the first thread hole, a second two-way joint is externally connected with the second thread hole, a third two-way joint is externally connected with the third thread hole, a fourth two-way joint is externally connected with the fourth thread hole, and water flow passages are respectively arranged in the inner ends of the first thread hole, the second thread hole, the third thread hole and the fourth thread hole, are communicated with the first thread hole, the second thread hole, the third thread hole and the fourth thread hole, and extend to the bottom plate of the square groove. The visualized plane sand packing model has the advantages that the visualizing degree is high, the sealing property of the surface plate and the packing sand is good, the model with small leakage rate can be filled to simulate the low-osmosis oil storage environment, the high pressure-resistant property is realized, and the visualized plane sand packing model can be conveniently connected with indoor physical simulation injection and production equipment.

The invention relates to a low permeable oil deposit virtual horizontal well development method, comprising the following process technologies: deploying a developed well pattern, early flooding under nearly high pressure condition, optimizing a perforation well section and a perforation way, designing and deploying the development technology and producing a long slot by ultra large scale fracturing. When the developed well pattern is deployed, the well pattern is designed and deployed in a region with the thickness of an oil layer being higher than a 4m line, the well pattern is a five-spot square one with the distance between an oil well row and a water well row being 490-520m and the distance between an injection well row and an extraction well row being 170-200m, wherein the directionof the oil well row and the water well row is consistent with the direction of the main geostatic stress; the early flooding is carried out under the nearly high pressure condition that the strata pressure coefficient is kept to be 0.9-1.0; at the middle part of the oil layer is perforated for only 2-4 meters, and the perforating is carried out by adopting a multiphase optimized perforation way; the development technology is designed and oil-water wells and capacities of the oil-water wells are deployed in a block; and the slot is produced by adopting the ultra large scale fracturing while monitoring is carried out, wherein average length of half slot is 190-250m, and high delivery volume construction at the speed of high quality fracturing fluid being 5-6m<3>/min is adopted in the whole course. The invention is applied to a low permeable oil deposit development process.

The invention discloses a dication asphalt emulsifier. The molecular structure of the dication asphalt emulsifier is shown in the description, wherein when x is equal to 1, y is equal to 1 and i is equal to 0; when x is equal to 2, y is equal to 0, z is equal to 1 or 0, and i plus z is equal to 1. The dication asphalt emulsifier is prepared from the following raw material in molar ratio: 1 mol of N-Hydrogenated tallow-1, 3-diaminopropane, 6.00-13.00 mol of alcohols solvent, 1.02-3.05 mol of methyl acrylate, and 2.02-2.10 mol of sodium chloroacetate. The alcohols solvent adopts ethyl alcohol, methyl alcohol or isopropyl alcohol. The synthetic raw material of the dication asphalt emulsifier is easy to get, the production cost is low, the technology is simple, and high-temperature reaction is not required. Different types of asphalt can be emulsified, the prepared asphalt emulsifier is exquisite and uniform, the storage stability is good, dication emulsified asphalt can be prepared, and the dication asphalt emulsifier is applied to spreading of road penetrated oil layers or bonding oil as well as slurry surfacing and micro-surfacing parts, and has the characteristics of a medium breaking asphalt emulsifier and a slow breaking asphalt emulsifier.

The invention discloses a method for preparing penetrated emulsified asphalt. The method comprises the following steps of: (1) preparing aqueous solution by using an asphalt emulsifier and a stabilizer; (2) heating and melting asphalt and/or residual oil, and mixing the melt and a diluent; (3) adding cationic styrene butadiene rubber (SBR) latex to increase the adhesiveness of residues; and (4) emulsifying partial materials in the steps (1), (2) and (3) through a colloid mill with a larger mill clearance, filling obtained products into a finished product tank, turning down the mill clearance of the colloid mill, emulsifying the remaining part of the materials through the colloid mill, filling obtain products into the finished product tank, and uniformly mixing the obtained products and the previous products to obtain a final finished product. By the method, an emulsifying machine meets requirements on different mill clearances, equipment cost is saved compared with that of two colloidmills; and the permeability of the prepared high-permeable penetrated emulsified asphalt is improved, and the indexes such as ductility, sticky toughness and the like are improved at the same time. The penetrated emulsified asphalt can be used in the fields of penetrated oil, cold regeneration of asphalt pavements, slurry sealing and the like.

The invention discloses a method for preparing an amphoteric betaine asphalt emulsifier. The method comprises the following steps: by adopting coconut oil acyl propyl dimethyl tertiary amine as a raw material, reacting with epoxy chloropropane to obtain an intermediate in an alcohols solvent; and continuing to react with a dimethylamine aqueous solution and sodium chloroacetate, so as to obtain the amphoteric betaine asphalt emulsifier. The asphalt emulsifier is easily available in synthetic raw material, low in production cost, simple in process, and free of high-temperature reaction. The prepared emulsified asphalt is even, fine and smooth, good in storage stability, and applicable to spreading of penetrated oil or a tack coat for a high-way, and has the characteristics of a medium breaking asphalt emulsifier; each performance of the prepared emulsified asphalt can meet the standard of cationic emulsified asphalt formulated by the China's Ministry of transportation.

A gun oil composition adapted specifically for the needs and requirements of modern firearms. The gun oil composition improves lubricity and gun performance under normal and extreme heat and pressure, minimizes and largely prevents the build-up of carbon and debris fouling on metal and non-metal components of the firearm, and substantially reduces cleaning time, while providing increased protection against environmental components such as dust, dirt and rust. The gun oil composition can include a high viscosity base oil, a medium viscosity oil with detergent additive, and a low viscosity penetrating oil.

A gun oil composition adapted specifically for the needs and requirements of modern firearms. The gun oil composition improves lubricity and gun performance under normal and extreme heat and pressure, minimizes and largely prevents the build-up of carbon and debris fouling on metal and non-metal components of the firearm, and substantially reduces cleaning time, while providing increased protection against environmental components such as dust, dirt and rust. The gun oil composition can include a base oil having at least a high viscosity index, an oil having at least a medium viscosity index with a detergent additive, a low viscosity penetrating oil, and a sulfurized ester.

The invention relates to a method for increasing the yield and the injection of a low-permeability oil field, comprising the following steps of: (1) determining the jet parameters of a horizontal hole; (2) carrying out the jetting of the horizontal hole; (3) carrying out the jetting of the horizontal hole as follows: dividing fractured intervals; selecting a fracturing fluid; determining the half length of a fissure; and selecting a fracturing string. The method combines the horizontal hole with fracture for application, shortens the displacement distance for a first time to play a well pattern regulating role by sufficiently utilizing the advantage that a water-power deep penetration technology is not limited by ground stress, the jet aperture is larger and the jet distance is long, then carries out oil-water well corresponding fracture by utilizing jet holes, forms meshed cracks which mutually communicate by combining with the direction of the ground stress, shortens the displacement distance for a second time to be within a limited well spacing and enlarges the seepage area, thereby fundamentally solving the problem that a yield and injection increase measure of the low-permeability oil field is limited and having great significance on the high-efficiency development of low-permeability oil field.

The invention provides a method for describing low-permeability oil reservoir fluid channeling passages rapidly and quantitatively. The method comprises the following steps: 1, determining the quantitative description range of different types of oil reservoir fluid channeling passages of the low-permeability oil reservoir; 2, counting the permeability of the same type of oil reservoir fluid channeling passage and the changing curve of the thickness, the pore throat radius and the pore volume of the fluid channeling passage; 3, calculating a single-well A type water-driving characteristic curveof a production well and seeking the production well with an upwarped straight section in the water-driving characteristic curve; and 4, taking a water injection well as a center and marking off fluid channeling passages which are developed along different directions along different directions of a development well network. Four parameters, such as the permeability, the pore volume, the pore throat radius and the fluid channeling passage thickness, of the low-permeability oil reservoir fluid channeling passages can be calculated rapidly through low-permeability oil reservoir production dynamic data, so that quantitative identification and quantitative description of the low-permeability oil reservoir fluid channeling passages are realized.

The invention relates to the technical field of geotechnical engineering prospecting, in particular to a static penetrometer. The static penetrometer can be applied to the field of deep hole static penetration tests. The condition that static sounding probing rods can be deviated and even bent when being subjected to excessively-high penetration resistance can be effectively avoided. The static penetrometer comprises a test platform. The test platform is provided with a plurality of sliding rails. Each sliding rail is provided with one static sounding probing rod in a penetrating mode, and thelower end of each static sounding probing rod is connected with a static sounding probe. The upper end of each static sounding probing rod is connected with a ZIGBEE wireless communication module, and each ZIGBEE wireless communication module is in wired connection with the corresponding static sounding probe. Each ZIGBEE wireless communication module is in wireless communication connection witha control terminal of the static penetrometer. A constraint sleeve is arranged on the periphery of each static sounding probing rod, and outer fixing tubes connected through threads are arranged on the peripheries of the corresponding constraint sleeves. The test platform is further provided with a penetrating oil cylinder used for driving and controlling the static sounding probing rods and the constraint sleeves.

The invention discloses a fracturing and tertiary recovery integrated construction method for a low-permeable reservoir. The fracturing and tertiary recovery integrated construction method comprises the following steps that fracturing layer segment dividing is conducted on a target layer, the liquid amount of fracturing for the target fracturing layer segment is determined, the construction displacement of the target fracturing layer segment is determined, and a pump injection construction procedure for the target fracturing layer segment is determined; and hole injecting operating is conducted on the target fracturing layer segment, oil-displace fracturing fluid is injected into the target fracturing layer segment for fracturing construction, and wherein, the oil-displace fracturing fluidis the fracturing fluid with an oil-displacing agent added. Compared with the prior art, the technical scheme of the method has the beneficial effects that by adding the oil-displacing agent into thefracturing fluid, the integrated construction of fracturing and tertiary oil recovery is achieved, so that the production increasing effect of fracturing and tertiary oil recovery is achieved; and meanwhile, the water lock effect of a reservoir layer is also avoided, and the significant progress is achieved compared with an existing first fracturing and then tertiary oil recovery scheme.

The invention relates to a method for equivalently representing threshold pressure gradients in low-permeability oil reservoir numerical simulation. The method comprises the following steps of: 1) obtaining a quantitative relationship between different-permeability reservoirs with and threshold pressure gradients through an experiment; 2) carrying out quantitative calculation on oil reservoir non-homogeneity; 3) setting numerical simulation partitions; and 4) carrying out threshold pressure gradient assignment on meshes formed after the partition setting: 1, reading a permeability value of each mesh, and carrying out assignment on the threshold pressure gradient of each mesh according to the relationship between the permeability and the threshold pressure gradients in the step 1), and 2, setting threshold pressure gradients of the partitions, and for a certain partition, carrying out assignment on a threshold pressure gradient generated in a fluid flow-out process and carrying out carrying out assignment on a threshold pressure gradient generated in a fluid flow-in process.

The invention discloses an oil gas treatment system and a treatment method, and the system comprises a condensation device which is used for carrying out condensation on collected oil gas, so as to obtain condensed liquid and non-condensable gas; a membrane separation assembly which is connected with the condensation device to receive the non-condensable gas, and is used for membrane separation treatment on the non-condensable gas to obtain intercepted oil gas and permeated oil gas with the organic matter concentration larger than that of the intercepted oil gas, wherein the permeated oil gasflows back to the condensation device; and an oxidation reaction device which is connected with the membrane separation assembly so as to receive the intercepted oil gas, and is used for performing oxidation reaction treatment on the intercepted oil gas so as to generate clean gas which can be discharged after reaching the standard. The oil gas treatment system can effectively solve the technicalproblems of strong dependence on the absorbent, substandard exhaust gas and high safety risk in the traditional oil gas treatment method.

The invention relates to a method for adjusting a well group after a lot of oil-displacing fluid is injected into a thin oil reservoir water injection well of a sandstone reservoir. The problem is mainly solved that an existing conventional fracturing well group adjusting method is not suitable for adjusting a measure well group by using the technology that a lot of oil-displacing fluid is injected into the water injection well. The method is characterized by comprising the steps that (1), water-injection profiles of measure wells obtained after a lot of oil-displacing fluid is injected are well monitored periodically, the production profiles of connected oil wells of the measure wells are well monitored periodically, and the measure wells are subjected to subdivision and water lifting; (2), the future production status of the connected oil wells is subjected to numerical simulation tracking and scheme prediction; a normally-closed oil well is subjected to well opening control; a high-flowing-pressure connected oil well is subjected to adjustment of large parameters and changing of a high-capacity pump; a non-measure water injection well is subjected to scheme adjustment; breakthrough layers of the connected oil wells and the connected wells with the breakthrough layers displayed by monitoring data are subjected to water plugging; the connected oil well with the low-permeability oil layer displayed by the monitoring data is subjected to fracturing response. By means of the adjusting method, the oil production speed and the recovery percent of the thin oil reservoir well group are increased.

Disclosed is a method for production of a methyl ester based formulation. The method involves: providing a feedstock containing about 1% to about 100% canola oil; removing water from the feedstock; heating the feedstock to at least about 60° C.; mixing a solution of about 90% to about 100% (v/v) methanol and a strong base with the heated feedstock to produce a mixture containing methyl ester; and allowing the mixture containing methyl ester to rest for at least one hour. The composition of the methanol and strong base solution being calculated based on the free fatty acid content of the feedstock. The methyl ester based formulations produced by the method can be used as ecofriendly penetrating oils, lubricating oils, machining fluid or releasing agents.

The invention relates to the technical field of oilfield development, in particular to a method and a device for predicting CO2 miscible flooding effected oil well gas channeling time of a low-permeability reservoir. A gas channeling early warning chart diagram is established through CMG numerical simulation software simulation, the gas channeling time of an oil well is determined through a Kmeansclustering algorithm, the influence degree of various influence factors of the oil well is judged through a partial correlation analysis method, the influence factors with the small influence degreeare removed, and a gas channeling time sample library is obtained; and a CO2 miscible-phase flooding well gas channeling time prediction model is established by using a multiple linear regression model algorithm. The gas channeling time of the oil well to be measured can be directly and accurately predicted by substituting influence factor data of the oil well to be measured into the CO2 miscible-phase flooding oil well gas channeling time prediction model, complex simulation on the oil well to be measured by using CMG numerical simulation software is skipped, and prediction on a development well is more accurate and faster. Influence factors with small influence degrees are eliminated so that the method is more instructive to the production field of the oil well.

The invention discloses a low-permeability reservoir characteristic main control factor extraction method and device and a readable storage medium. The low-permeability reservoir characteristic main control factor extraction method comprises the following steps: acquiring parameters of a plurality of to-be-classified reservoirs in a research area; screening out a plurality of parameters meeting preset conditions according to the relevancy among the parameters; standardizing the screened parameters; carrying out factor analysis on the parameters after standardization processing, and extractinga plurality of main factors; classifying the to-be-classified reservoirs by taking the extracted main factor as a standard; and determining a main factor with the maximum influence of each type of oilreservoir so as to determine a main control factor of each type of oil reservoir. The technical scheme provided by the invention has the advantages that the low-permeability oil reservoirs are classified through a factor analysis method and a K-mean clustering analysis method, and main control influence factor of each type of oil reservoirs is defined. According to the method, hidden oil reservoir characteristics can be extracted, and main control influence factors of various oil reservoirs are clarified.

The invention relates to a circuit device having at least one circuit carrier package cover, especially a gearbox controller. The circuit device (10, 30, 40, 50, 70), especially the gearbox controller has at least one cover (18, 52) for encapsulating a circuit carrier (12) in which several electrical and electronic components (14) are mounted. An absorber, formed by oil-combined loose materials or forming bodies (76, 78) having several different space geometrical shapes is sealed in inner space (16) for absorbing the penetrated oil from outside. With the absorber, sensitive component (14) will not be wet by oil.