271results about How to "Improve oil recovery efficiency" patented technology

The invention relates to a novel oil shale dry distillation and oil refining method and a novel oil shale dry distillation and oil refining device. Firstly, the invention provides the oil shale dry distillation and oil refining method. In the method, oil shale particles with granularity less than 15mm are used as raw materials; and high temperature flue gas generated by burning semicoke and/or dry distillation gas is utilized to indirectly heat the oil shale particles so as to realize dry distillation of oil shale. The invention also provides the novel oil shale dry distillation and oil refining device for the oil shale dry distillation and oil refining method. Due to the adoption of the oil shale dry distillation and oil refining method and the oil shale dry distillation and oil refiningdevice, which are provided by the invention, high shale oil yield can be obtained, recycling of various products can also be realized, the burning utilization effect of the semicoke is high, and the utilization rate of the oil shale can reach 100 percent. The oil shale dry distillation and oil refining method and the oil shale dry distillation and oil refining device are not only beneficial for improving the economic benefits, but also are beneficial for protecting the environment.

The invention discloses an intelligent winch type pulling oil production system. The system comprises a drive assembly (1), a rack (2), an oil pumping rope (3) and a control device (9), wherein the drive assembly is provided with a winding drum (11) and a drive device (12) driving the winding drum (11) to rotate; a pulley (21) is installed on the rack; one end of the oil pumping rope is wound on the winding drum (11) and the other end thereof is connected with an oil production device (4) in an underground oil well pipe (5) by bypassing the pulley (21); the control device is used for controlling the drive device (12) to rotate; the oil production device (4) is provided with an underground liquid column height detector (6); and the underground liquid column height detector (6) transfers the detected liquid column height signal to the control device so that the control device controls the drive device (12) to act when receiving the preset liquid column height signal, thus driving the oil production device (4) to pull the liquid in the oil well pipe (5) out of the well mouth. The system has high oil production efficiency, reduces the energy consumption and reduces equipment wear.

The invention provides a polymer microsphere for oil field profile control and water plugging and a preparation method thereof. The polymer microsphere is of a three-layer spherical structure, and comprises a positive ion inner core, a middle oleophilic casing layer and an outer layer negative ion hydrophilic casing layer, wherein the positive ion inner core comprises acrylamide, cationic monomers and crosslinking agent copolymers; the middle oleophilic casing layer comprises acrylamide, oleophilic monomers and cross linking copolymers; the outer layer negative ion hydrophilic casing layer comprises acrylamide, anionic monomers and crosslinking agent copolymers. The polymer microsphere prepared according to the invention has the advantages that the particle diameter range is controllable in the dimension range of 1 to 500 mu. m; in the use process, the outer hydrophilic casing layer and the middle oleophilic casing layer are gradually degraded along with the prolonging of the water dissolution time; the inner core has good water absorption expansion performance; the dimension after the sufficient expansion reaches 30 to 1500 mu. m; good expansion performance and good plugging performance are realized. The polymer microsphere is solid powder; the storage is convenient; the stability is high; the validity period is 3 to 5 years; in the use process, the addition of other auxiliary agents is not needed; the polymer microsphere can be fast dispersed in the solvent.

Provided is a universal random deviation rectification outside injected magnetic fluid polished rod sealing device applied for oil extraction in the oil field. The universal random deviation rectification outside injected magnetic fluid polished rod sealing device comprises a polished rod sealing culvert at the upper portion, wherein an upper and a lower group of permanent magnets are arranged in the culvert, an injection hole is formed in the middle portion capable of Is capable of injecting and supplying magnetic fluid into a cavity in due time to conduct a dynamic sealing to the polished rod, and a universal-joint mechanism at the lower portion is capable of rectifying deviation randomly in radial and axial three-dimensional space. A polished rod sealing culvert assembly is arranged above the random deviation rectification mechanism. The universal random deviation rectification outside injected magnetic fluid polished rod sealing device thoroughly resolves problems that production halts often occur due to applying packing polished rod sealing device in the existing oil extraction with huge energy consumption and easy damage, causing emitting, dipping and leakage of well mouth pressed oil, gas and water and accompanying serious environmental pollution, potential safety hazard and other world class problems, and can be widely applied in well mouth polished rod sealing of oil field sucker-rod pump oil extractor.

The invention relates to pour point depressing and viscosity reducing composition for heavy oil, a pour point depressing and viscosity reducing agent for the heavy oil and a preparation method of the pour point depressing and viscosity reducing agent, and belongs to the technical field of oil exploitation. The pour point depressing and viscosity reducing composition for the heavy oil comprises components in parts by weight as follows: 25-55 parts of a surfactant, 5-20 parts of a dispersing agent, 15-20 parts of an inhibitor and 20-50 parts of a co-emulsifier, wherein the dispersing agent contains polyoxyethylene alkyl amine, and polyoxyethylene alkyl amine accounts for not lower than 9% of the dispersing agent in percentage by mass. The pour point depressing and viscosity reducing composition for the heavy oil has good emulsifying viscosity reduction functions on the heavy oil with the gum asphalt content of 40% and the freezing point of 40 DEG C, the viscosity reducing rate can be up to 99% or higher and the pour point depressing range can be up to 15 DEG C or higher only through addition of 0.5% by mass of the pour point depressing and viscosity reducing agent product, and the problems of high entering-pump resistance of crude oil and difficulty in shaft lifting can be solved very well.

The invention discloses a main controlling factor analysis for shale oil production and an earthquake prediction method and device. The main controlling factor analysis for shale oil production and the earthquake prediction method and device are characterized in that the main controlling factor analysis for shale oil production is capable of establishing a shale oil and gas reservoir accumulation mode which plagues scientific research workers from a long time by means of analyzing shale oil and gas accumulation conditions, oil and gas geological characteristics and oil and gas accumulation characteristics; the earthquake prediction method and device conducts prediction by selecting a targeted earthquake prediction technique to ultimately realize comprehensive prediction of oil and gas enrichment region of a shale oil reservoir in Langzhong area of Sichuan province; the main controlling factor analysis for shale oil production and the earthquake prediction device mainly comprises a driller, a lifting base, an acoustic detector, a camera, a sensor, an analysis computer and a storage printer. Furthermore, the main controlling factor analysis for shale oil production and the earthquake prediction method and device determines main controlling factors of shale oil drilling production in Daanzhai section of Langzhong area to predict favorable areas for oil and gas via a corresponding earthquake and geological prediction technique, thereby improving oil recovery efficiency and laying the foundation for the further exploration of shale oil and gas in Sichuan area.

The invention provides a magnetofluid polished rod sealer used for oil production in an oil field, comprising a housing; the lower end of the housing is enclosed, the upper end is provided with gram and a gland bush and the gland bush is sheathed on the outside of a polished rod; particularly, a magnetic sleeve gasket is arranged in the housing, the inner ring surface of the magnetic sleeve gasket is provided with a fill area opposite to the polished rod and the fill area is filled with magnetofluid; the upper end and the lower end of the magnetic sleeve gasket are respectively provides with an upper sleeve gasket and a lower sleeve gasket. The invention completely solves the long-standing problems of high power consumption, vulnerableness, 'running', 'emitting', 'dropping' and 'leaking' of oil-gas-water and harm on safety and environment protection of the existing oil producing sealer and the like; the sealer can be widely used for sucker-rod pumping wells in the oil field.

The invention relates to a liquid level-pressure coordinated control method used for a gas-liquid separator, used to set a liquid level-pressure coordinated control device. The method comprises: presetting each target value and opening initial values; determining whether gas-phase pressure is larger than a preset gas-phase pressure target value, calculating a valve opening value of a first pneumatic control valve and feeding back to a valve to operate; determining the relations between the difference value of the maximum value and the minimum value of pressure measuring values and pressure fluctuation errors; determining whether liquid level measuring values are larger than a preset liquid level height target value, calculating the valve opening value of a second pneumatic control valve and feeding back to a valve to operate; determining relations between the difference value of the maximum value and the minimum value of liquid level measuring values and liquid level fluctuation errors; performing simple control on gas-phase pressure and liquid level height in the gas-liquid separator; determining received liquid level height; and a liquid level-pressure operation control module determining whether the received gas-phase pressure exceeds an error range, and determining whether the received liquid level height exceeds an error range.

The invention provides a fabricated rotor rare-earth permanent magnet torque motor. The fabricated rotor rare-earth permanent magnet torque motor comprises a stator, a rotor, an end cover, a hollow rotor shaft, a double-barrel non-magnetic rotor bracket formed by sleeving a small barrel in a big barrel, magnetic pole shoes embedded at the outer edge of the rotor bracket at equal intervals and in a spacing manner and a rare-earth permanent magnet, wherein an upper end plate and a lower end plate both made of a non-magnetic material and used for fixing a permanent magnet are mounted on the two ends of the rotor respectively. Due to such the design, the assembling technology of the motor rotor is better, the rotor is lighter in weight, the rotational inertia is lower, the permanent magnet material is less, the utilization rate of the permanent magnet is higher, the leakage flux is lower, the reliability is higher and permanent demagnetization can be avoided. Therefore, the comprehensive performances of the low-speed high-power torque motor are improved greatly.

The invention relates to the technical field of pumping units, in particular to a lifting platform type pumping unit, which comprises a mounting support, a supporting base, a slider, a scissor type lifting platform, a counterweight sleeve, a counterweight cylinder, a left fixed pulley, a right fixed pulley and a sucker rod; the supporting base is arranged under the mounting support, and a power system is fixedly mounted on the supporting base; a pair of slider rails are fixedly mounted on the inner lower part of the mounting support, and the slider is mounted between the slider rails; the slider can be driven by the power system to move up and down; a crossbeam is fixedly mounted at the middle of the mounting support, and the scissor type lifting platform which can be extended and retracted is mounted on the crossbeam and located in the mounting support. The lifting platform type pumping unit has a reasonable and compact structure, and is convenient to use; the oil-pumping stroke can be increased by the scissor type lifting platform, consequently, the efficiency of oil production can be increased, and the oil output can be increased; the scissor type lifting platform is a link structure, the weight is light, and drive is flexible; the power of a used electromotor is low, consequently, more energy can be saved, and the cost is reduced.

The invention discloses a microbial multi-cycle huff and puff oil production method. The method comprises the following steps that: strains are screened, acclimated, cultivated and produced; determined process of injection parameters which comprise strain liquid injection rate, nutrient solution injection rate, shortest well shutdown time t and multi-cycle huff and puff interval parameters; and an oil-well microbial community is tracked and monitored. In the method, the tracking and the monitoring are performed by molecular biology; a field process is improved by combining the actual production condition and a monitoring result; and the method has the advantages of simple construction process, low cost and high oil production efficiency.

The invention provides a pumping unit fault diagnosis method based on an improved unscented Kalman filter and an RBF neural network. Firstly, modeling is performed on decision parameters by using theRBF neural network; then, the weights, center and width of the hidden layer of a neural network model are updated by using an mproved unscented Kalman filter algorithm in real time to obtain optimal parameters of the neural network; and the pumping unit fault diagnosis method based on the combination of the improved unscented Kalman filter and the RBF neural network is established. The remarkableeffect of the invention lies in that: the accuracy rate of fault diagnosis is improved, and the purpose of real-time detection of the operation condition of a pumping unit is truly achieved.

The invention provides a single-well water-containing-rate remote metering device and a transmission method of single-well water-containing-rate data. The single-well water-containing-rate remote metering device can achieve single-well on-site on-line continuous metering and is small in metering error, low in manufacturing cost, high in metering speed and capable of saving labor and material resources. The device comprises a water-containing analysis instrument composed of a probe, a radio frequency signal generator, a center processor, a data storage and an RS 485 communication port. The center processor is connected with a remote transmission module. According to the transmission method of the single-well water-containing-rate data, the single-well water-containing-rate remote metering device is arranged in each well, the center processor stores a water-containing-rate curve mathematical model in advance, the water-containing-rate in a wellhead production fluid is measured and transmitted to a data center server through the remote transmission module, meanwhile, the measured data are uploaded to a central control room through the RS485 communication port, the measured water-containing-rate data are collected in real time, remote zero calibration and parameter configuration are carried out, then the data are transmitted to a host of a user through the Internet, and a manager can learn about and monitor single-well water-containing metering operations remotely.

The invention discloses a preparation method of long-chain fatty alcohol-polyoxyethyleneether sulfate and amphoteric surfactant as well as an application thereof in tertiary oil recovery. According to the special scheme, long-chain fatty alcohol ether, chlorosulfonic acid and sodium hydroxide are used as main raw materials, and are subjected to sulfonation and neutralization reactions to synthesize a nonionic-anion surfactant. The preparation method has the advantages of simple process, low cost of the raw materials, wide sources, stable product property, environmental friendliness and economical benefits. An oxethyl group is embedded into the long alkyl chain of the anion surfactant, so that the surface activity is high, the thermal stability and the anti-salt capability are good, the compatibility is good and the biodegradation property is good. The preparation method of an oil-displacing agent and the other surfactants provided by the invention has very good coordination effect and is used for preparing the efficient oil-displacing agent in the tertiary oil recovery, so that the ultralow interface tension can be formed on a water-raw oil interface. Furthermore, the interface tension is not influenced by temperature, mineralization degree and calcium-magnesium ion concentration.

The invention discloses an oil pumping unit system with multiple sections of steam injection packer parts. The oil pumping unit system comprises an oil pumping unit body, a steam injection thermal production oil pump and a packer assembly. The oil pumping unit body is connected with the steam injection thermal production oil pump through a traction system of the oil pumping unit body. The steam injection thermal production oil pump is connected with the packer assembly through a release sub. The packer assembly comprises the release sub, a first oil discharging pipe, a first side sealing spindle, a second oil discharging pipe, a second side sealing spindle, a third oil discharging pipe, a third side sealing spindle, a packer body, a one-way valve, a first spraying head, a second spraying head, a sealing ring, a fourth oil discharging pipe, a third side sealing spindle, a fifth oil discharging pipe, a fourth side sealing spindle, a third spraying head, a ventilation pipe, a cable inletguiding part and a side gas pipeline.

The invention discloses an oil shale oven and a carbonification process, wherein the oil shale shale oven comprises feeding equipment, a gas collecting umbrella, an oven body, a carbonification section, a mixing chamber, an arch abutment and a generating section, wherein a wind shoe, an ash exhauster and an cupel are arranged at the bottom of the generating section; the side parts of the mixing chamber are provided with circulating gas inlets; and circulating gas are introduced to the carbonification section to heat oil shale. The invention also relates to the carbonification process of the oil shale, which is characterized by carrying out carbonification stage twice and using full circulating gas for heating so that the oil shale is completely carbonified in the oven body, no incomplete carbonification phenomenon happens and high oil extraction efficiency is achieved. The invention has the advantages of novel structure, ingenious design and easy operation control, and the the carbonification process has high oil extraction efficiency , little environment pollution and high utilization rate of the oil shale.

The invention discloses a floor type multi-rope oil extractor system. The system comprises an oil extractor main body, a gas injection thermal recovery oil extracting pump and a packer module; the oilextractor main body is connected with the gas injection thermal recovery oil extracting pump through a traction system thereof; the gas injection thermal recovery oil extracting pump is connected with the packer module through a hand-free joint; the oil extractor main body comprises a concrete foundation, a shifter guide rail, a rail clamper module, a control cabinet, a bracket, an adjustable balance counterweight, an upper platform, an upper guard combination, a power device, a brake, the traction system and an elevator; the traction system comprises a traction wheel, a steel wire rope, a movable pulley set and a steel wire rope joint; the steel rope is divided into an elevation steel wire rope and a balance steel wire rope; one end of the elevation steel wire rope is fixed on the traction wheel and bypassed through the traction wheel, and the other end is fixedly connected with the steel wire rope joint on the bracket through the elevator and the movable pulley on the elevator; andthe balance steel wire rope is opposite to the elevation steel wire rope, one end is fixed on the traction wheel and bypassed through the traction wheel, and the other end is fixedly connected with the steel wire rope joint on the bracket through the adjustable balance counterweight and the movable pulley on the adjustable balance counterweight.