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7130 results about "Oil field" patented technology
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An "oil field" or "oilfield" is a region with an abundance of oil wells extracting petroleum from below ground. Because the oil reservoirs typically extend over a large area, possibly several hundred kilometres across, full exploitation entails multiple wells scattered across the area. In addition, there may be exploratory wells probing the edges, pipelines to transport the oil elsewhere, and support facilities. Because an oil field may be remote from civilization, establishing a field is often an extremely complicated exercise in logistics. This goes beyond requirements for drilling, to include associated infrastructure. For instance, workers require housing to allow them to work onsite for months or years. In turn, housing and equipment require electricity and water. In cold regions, pipelines may need to be heated. Also, excess natural gas may be burned off if there is no way to make use of it—which requires a furnace, chimney and pipes to carry it from the well to the furnace.
Cold weather package for oil field hydraulics
A hydraulic fracturing system includes an electrically powered pump that pressurizes fluid, which is piped into a wellbore to fracture a subterranean formation. System components include a fluid source, an additive source, a hydration unit, a blending unit, a proppant source, and a fracturing pump. The system includes heaters for warming hydraulic fluid and / or lube oil. The hydraulic fluid is used for operating devices on the blending and hydration units. The lube oil lubricates and cools various moving parts on the fracturing pump.
Owner:US WELL SERVICS LLC
Electromagnetically determining the relative location of a drill bit using a solenoid source installed on a steel casing
Electrically powered electromagnetic field source beacons installed in a reference well in combination with a down-hole measurement while drilling (MWD) electronic survey instrument near the drill bit in the borehole being drilled permit distance and direction measurements for drilling guidance. Each magnetic field source beacon consists of a coil of wire wound on a steel coupling between two lengths of steel tubing in the reference well, and powered by an electronic package. Control circuitry in the electronic package continuously “listens” for, and recognizes, a “start” signal that is initiated by the driller. After a “start” signal has been received, the beacon is energized for a short time interval during which an electromagnetic field is generated, which is measured by the MWD apparatus. The generated magnetic field may be an AC field, or switching circuitry can periodically reverse the direction of a generated DC electromagnetic field, and the measured vector components of the electromagnetic field are used to determine the relative location coordinates of the drilling bit and the beacon using well-known mathematical methods. The magnetic field source and powering electronic packages may be integral parts of the reference well casing or may be part of a temporary work string installed therein. Generally, numerous beacons will be installed along the length of the reference well, particularly in the important oil field application of drilling steam assisted gravity drainage (SAGD) well pairs.
Owner:HALLIBURTON ENERGY SERVICES INC
Fracturing base liquid mixer
PendingCN108371894AAchieve energy efficiency ratioCanto Efficiency RatioFlow mixersTransportation and packagingBusiness efficiencyFracture sites
The invention relates to the technical field of water-powder mixing or liquid mixing equipment in the construction operations of oil and gas fields and particularly relates to a fracturing base liquidmixer used in a construction process of an oil field fracturing site. The fracturing base liquid mixer comprises a rotational flow premixing device which comprises a liquid inlet, a feeding hole, a connecting component and an annulus, wherein the feeding hole is vertically formed, the liquid inlet is horizontally formed, the side wall of the feeding hole is connected with a sleeve, the connectingcomponent is arranged in the sleeve, the annulus is formed by the connecting component and the side wall of the feeding hole and is communicated with the liquid inlet, an oblique side is arranged atthe lower end part of the side wall of the feeding hole, an oblique plane is arranged at the upper part of the connecting component, and the oblique plane and the oblique side form certain angles witha vertical plane and are 0-80 degrees; and a reduced section, a throat pipe and a dispersion pipe are sequentially arranged at the lower part of the feeding hole. The fracturing base liquid mixer canmeet the requirements on the fracturing base liquid during large-scale operations in a fracturing operation site, the blending and mixing efficiencies are improved, the mixing quality of guanidine gum liquid is improved, and the optimal energy efficiency ratio is realized.
Owner:YANTAI JEREH PETROLEUM EQUIP & TECH
Oil field fracturing pumping remote automatic control system
ActiveCN101414171AMonitor and control operationsOrderly and stable operationTotal factory controlProgramme total factory controlAutomatic controlHuman–machine interface
The invention discloses a remote automatic control system of a fracturing pump skid used in an oil field. The system is used for remote automatic control of a well service pump skid and a truck-mounted skid used in the oil field; the remote automatic control system consists of a field control system which consists of Siemens S7-315 series PLCs which are taken as a core, a Siemens MP370 which is taken as a remote control human-machine interface, and Ethernet which is taken as a transmission media; the system can achieve remote control functions such as start, stop and emergency stop of an engine, gear shifting, braking, turning back to a neutral position and idle speed of a gearbox and the like, and the system can modify field running parameters in a remote manner, thus realizing bidirectional transmission between the pump skid and the human-machine interface (HMI); the Ethernet is taken for communication so that the pump skid can transmit the field data to a remote controller or a server at the speed of 100MB / S; an industrial exchanger is taken to connect the devices such as the PLC, the HMI and the like to achieve more group controls; the exchanger can convert the field data into the data formats such as a standard *.CSV format and the like, and directly transmit the data to the server for data processing.
Owner:YANTAI JEREH PETROLEUM EQUIP & TECH CO LTD
System and method for performing oilfield drilling operations using visualization techniques
Owner:SCHLUMBERGER TECH CORP
Frac water heating system and method for hydraulically fracturing a well
InactiveUS20140144641A1Safely and continuously heatingMaximize atomization and combustionInsulationFluid removalCombustion chamberFuel tank
The present invention overcomes many of the disadvantages of prior art mobile oil field heat exchange systems by providing an improved frac water heating system. The present invention is a self-contained unit which is easily transported to remote locations. In one embodiment, the present invention includes a single-pass tubular coil heat exchanger contained within a closed-bottom firebox having a forced-air combustion and cooling system. In another embodiment, the present invention includes multiple, single-pass heat exchanger units arranged in a vertically stacked configuration. The rig also includes integral fuel tanks, hydraulic and pneumatic systems for operating the rig at remote operations in all weather environments. In a preferred embodiment, the improved frac water heating system is used to heat water on-the-fly (i.e., directly from the supply source to the well head) to complete hydraulic fracturing operations. The present invention also includes systems for regulating and adjusting the fuel / air mixture within the firebox to maximize the combustion efficiency. The system includes a novel hood opening mechanism attached to the exhaust stack of the firebox.
Owner:CHANDLER RONALD L
Remote, automatic control system for oil field fracturing pumping
ActiveCN101414171BMonitor and control operationsOrderly and stable operationTotal factory controlProgramme total factory controlAutomatic controlHuman–machine interface
Owner:YANTAI JEREH PETROLEUM EQUIP & TECH CO LTD
Ultrasonic tubulars inspection device
ActiveUS7293461B1Reduce in quantityOptimized areaAnalysing solids using sonic/ultrasonic/infrasonic wavesPiezoelectric/electrostriction/magnetostriction machinesTransducerOil field
A system, method, and apparatus for ultrasonic detection of flaws or defects in oil field tubulars utilizing composite transducers. An array of composite transducers are utilized to detect anomalies in the tubulars, such as transverse, wall or longitudinal defects. The use of the composite transducers allow for a greater inspection area over traditional transducers thereby reducing the number of channels needed for inspection of the tubulars.
Owner:GIRNDT RICHARD
Oil-fired frac water heater
ActiveUS20100000508A1Maximize atomization and combustionMaximize combustionAir-treatment apparatus arrangementsAir heatersFuel tankEngineering
The present invention overcomes many of the disadvantages of prior art mobile oil field heat exchange systems by providing an oil-fired heat exchange system. The present invention is a self-contained unit which is easily transported to remote locations. The present invention includes a single-pass tubular coil heat exchanger contained within a closed-bottom firebox having a forced-air combustion and cooling system. The rig also includes integral fuel tanks, hydraulic and pneumatic systems for operating the rig at remote operations in ail weather environments. In a preferred embodiment, the oil-fired heat exchanger system is used to heat water on-the-fly (i.e., directly from the supply source to the well head) to complete hydraulic fracturing operations. The present invention also includes systems for regulating and adjusting the fuel / air mixture within the firebox to maximize the combustion efficiency. The system includes a novel hood opening mechanism attached to the exhaust stack of the firebox.
Owner:CHANDLER RONALD L
Serialization and database methods for tubulars and oilfield equipment
Methods and apparatus identify downhole equipment and correlate input data with the equipment to improve planning and / or inventory operations. For some embodiments, oilfield equipment or tubular goods such as drill pipe include a shaped recess along an outer circumference for receiving a tag cartridge by shrink fitting. Once tagged, detector system configurations at pipe yards may facilitate logging the presence and location of each drill pipe and correlating specific data, such as inspection data, to each drill pipe. Further, this correlation populates a database utilized to achieve other business functions such as forecasting number of additional drill pipe needed to purchase, invoicing customers according to actual tracked wear / use of the drill pipe being returned, and providing well or job specific drill string population using known history pipe joints.
Owner:WEATHERFORD TECH HLDG LLC
Thermal decomposition device of oil field waste
InactiveCN104402186AImprove heat transfer efficiencyIncrease the effective heat transfer areaWaste water treatment from quariesSpecific water treatment objectivesOil fieldEngineering
The invention discloses a thermal decomposition device of oil field wastes. The thermal decomposition device comprises a casing, wherein a flue and a heating cavity are formed inside the casing; the heating cavity is isolated from the flue; ribs are arranged on the casing with the heating cavity. Fume inside the flue flashes the casing with the heating cavity, so that the heat can be conducted; due to adoption of the ribs on the casing with the heating cavity, the heat exchange area is effectively increased when being compared with that of the prior art, and the heat exchange efficiency of the thermal decomposition device is improved.
Owner:JEREH ENERGY SERVICES
Harmless reinjection treatment method for petroleum exploitation sludge
Relating to the technical field of harmless treatment of petroleum exploitation sludge, the invention provides a harmless reinjection treatment method for petroleum exploitation sludge. By means of a pump station composed of several hydraulic injection pumps in parallel connection, the sludge generated in petroleum exploitation is sent to an abandoned layer of an oil field. The method provided in the invention employs the hydraulic injection pumps with long stroke, low stroke frequency and high pressure to inject the sludge into the abandoned layer of the oil field, therefore, the treatment problem of oilfield exploitation sludge is solved, and simultaneously the sludge is returned to underground, thus realizing recycling of petroleum resources in the sludge, enhancing the petroleum recovery rate of the oil field, and changing the waste petroleum exploitation sludge into things of value.
Owner:DEZHOU UNITED GASOLINEEUM MACHINERY
Apparatus, Pumping System Incorporating Same, and Methods of Protecting Pump Components
Apparatus and pumping systems including the apparatus are described, the apparatus including a protector body comprising a material allowing expansion and contraction of an internal fluid, the body serving as a barrier between fluids external of the body and the internal fluid. The body has first and second ends, at least one end adapted to connect the body to other components, the protector body further comprising structural features permitting facile cleanout and reuse of the protector body. Methods of use of the apparatus and systems are described, particularly in oilfield exploration, testing, and production. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims.
Owner:SCHLUMBERGER TECH CORP
Oil field fracturing system with antifreezing performance
The invention discloses an oil field fracturing system with antifreezing performance. The oil field fracturing system comprises a clear water tank, a mixing vehicle, a buffer tank, a sand mixing vehicle, a fracturing device, a well mouth and a throttling manifold, wherein the outlet of the clear water tank is connected with the inlet of the mixing vehicle, the outlet of the mixing vehicle is connected with the inlet of the buffer tank, and the outlet of the buffer tank is connected with the inlet of the sand mixing vehicle, the outlet of the sand mixing vehicle is connected with an inlet of the fracturing device, a plurality of flanges are arranged at the well mouth, and one flange of the well mouth is connected with the throttling manifold, the other flanges of the well mouth are connected with the outlet of the fracturing device, and the outlet of the throttling manifold flows back to the clear water tank to form a closed circulation system. The oil field fracturing system has the beneficial effects that the liquid can be rapidly heated by adopting a steam automobile, so that the guanidine gum is fully swelled; and when there is no construction at night, the normal operation of the equipment is guaranteed by adopting the full-pipeline circulation and heat preservation, the pipeline is prevented from being disassembled, and equipment freeze-plugging is prevented.
Owner:JEREH ENERGY SERVICES
Use of nanoparticles for labelling oil field injection waters
InactiveUS20130084643A1Effective sizeEasy to implementOptical radiation measurementSurveyInjection wellOrganosilicon
The present invention relates to the development of tracer fluids, more generally, that of aqueous liquids, intended to be injected under pressure in an oil reservoir, for example from an injection well up to a production well.The object of the invention is to propose a new method of study of a solid medium, i.e. an oil reservoir, by diffusion of a liquid (i.e. injection waters) containing tracers, through said solid medium, which is simple to implement and economical and which remedies the drawbacks of the known tracers for injection waters of oil reservoirs.This method essentially consisting of injecting, in this solid medium, an injection liquid comprising a nanoparticle-based tracer having average dimensions comprised between 20 and 200 nm, detectable by means of one or several S signals at dilutions of less than or equal to 10−7, adapted to form a stable colloidal suspension in a saline medium, at least a portion of which is constituted of a core and a coating provided with an adjustable hydrophilic-lipophilic balance (HLB) and comprising at least one organic and / or organosilicon component; recovering the liquid having diffused; and analyzing this liquid having diffused to measure the quantity of tracer by detection of the signal or signals S.
Owner:TOTAL PUTEAUX FR
Method of drilling and production hydrocarbons from subsurface formations
A method associated with the production of hydrocarbons. In one embodiment, a method for drilling a well is described. The method includes identifying a field having hydrocarbons. Then, one or more wells are drilled to a subsurface location in the field to provide fluid flow paths for hydrocarbons to a production facility. The drilling is performed by (i) estimating a drill rate for one of the wells; (ii) determining a difference between the estimated drill rate and an actual drill rate; (iii) obtaining mechanical specific energy (MSE) data and other measured data during the drilling of the one of the wells; (iv) using the obtained MSE data and other measured data to determine one of a plurality of limiters that limit the drill rate; (v) adjusting drilling operations to mitigate one of the plurality of limiters; (vi) and iteratively repeating steps (i)-(v) until the subsurface formation has been reached by the drilling operations.
Owner:EXXONMOBIL UPSTREAM RES CO
Real-time onsite internet communication with well manager for constant well optimization
ActiveUS20090055029A1Eliminate needSurveyTesting/monitoring control systemsInternet communicationTTEthernet
An apparatus and method for well control and monitoring including an independent web server computer integrated with a pump controller located at each well in an oil field. The well controller locally controls the well pump, processes well and pump data, generates surface and downhole cards, and communicates production reports, recommendations for production improvements, and production statistics to remote sites via the internet. The controller can be queried remotely to provide production reports, etc. Furthermore, the controller can initiate alerts via email, text messaging, or internet messaging, for example, during fault conditions.
Owner:LUFKIN INDUSTRIES
High pressure rotating drilling head assembly with hydraulically removable packer
The present invention generally provides a reduced downtime maintenance apparatus and method for replacing and / or repairing a subassembly in sealing equipment for oil field use. The invention allows the removal of rotating portions of a rotary drilling head without having to remove non-rotating portions. The reduction in weight and size allows a more efficient repair and / or replacement of a principal wear component such as a packer. Specifically, the packer in a rotary drilling head can be removed independent of bearings and other portions of the rotary drilling head. Furthermore, because of the relatively small size and light weight, the packer can be removed typically without having to use a crane to lift a rotary BOP and without disassembling portions of the drilling platform. In some embodiments, the packer can be removed with the drill pipe without additional equipment. Furthermore, the packer can be removed remotely without necessitating manual disengagement typically needed below the platform. The invention also provides a fluid actuated system to maintain a pre-load system on the bearing.
Owner:WEATHERFORD TECH HLDG LLC
Thermal decomposition device of oil field waste
InactiveCN104402185AImprove heat transfer efficiencyEnhanced turbulence effectWaste water treatment from quariesSludge treatment by pyrolysisRetention timeOil field
The embodiment of the invention discloses a thermal decomposition device of oil field wastes. The thermal decomposition device comprises a casing, wherein a flue and a heating cavity are formed inside the casing; the heating cavity is isolated from the flue. The oil field waste thermal decomposition device is characterized in that a plurality of partitioning plates are arranged on the inner wall of the casing; the flue is of a snakelike structure through the adoption of the partitioning plates. Through the adoption of the partitioning plates on the inner wall of the casing of the thermal decomposition device disclosed by the invention, the flue inside the casing is of the snakelike structure, so that the flowing direction and the flowing speed of fume are changed, the turbulent flow effect is improved, the retention time is prolonged, and the heat exchange efficiency of the heating cavity and the fume is improved.
Owner:JEREH ENERGY SERVICES
Solar augmented geothermal energy
ActiveUS20060048770A1Maximize oil productionIncrease flow rateSolar heating energyAuxillary drivesHydrocotyle bowlesioidesOil field
An apparatus and a method is disclosed for storage of solar energy in a subsurface geologic reservoir. The method includes transferring concentrated solar thermal energy to a fluid, thereby generating a supercritical fluid. The supercritical fluid is then injected into the subsurface geologic reservoir through at least one injection well. The subsurface geologic reservoir may be a highly permeable and porous sedimentary strata, a depleted hydrocarbon field, a depleting hydrocarbon field, a depleted oil field, a depleting oil field, a depleted gas field, or a depleting gas field. Once charged with the supercritical fluid, the subsurface geologic formation forms a synthetic geothermal reservoir.
Owner:MEKSVANH NINO
Systems and methods for generating in-situ carbon dioxide driver gas for use in enhanced oil recovery
InactiveUS8616294B2Drilling rodsOther gas emission reduction technologiesSteam reformingSuperheated steam
The present invention is an in-situ apparatus for generating carbon dioxide gas at an oil site for use in enhanced oil recovery (EOR). The apparatus includes a steam generator adapted to boil and superheat water to generate a source of superheated steam, as well as a source of essentially pure oxygen. The apparatus also includes a steam reformer adapted to react a carbonaceous material with the superheated steam and the pure oxygen, in an absence of air, to generate a driver gas comprising primarily carbon dioxide gas and hydrogen gas. A separator is adapted to separate at least a portion of the carbon dioxide gas from the rest of the driver gas to generate a carbon dioxide-rich driver gas and a hydrogen-rich fuel gas. A compressor is used for compressing the carbon dioxide-rich driver gas for use in enhanced oil recovery, and the compressed carbon dioxide-rich driver gas, with substantially no oxygen, is injected to a predetermined depth in order to enhance oil recovery at the oil site. Unlike traditional CO2-EOR, which requires large power plants stationed near metropolitan areas and expensive pipeline networks, the in-situ apparatus can be placed or constructed at the site of the oil field, while a portion of the carbonaceous material may be obtained from a site outside the oil field.
Owner:PIONEER ENERGY
Intelligent oil well simulation experiment system and working method
InactiveCN102022112AEasy to operateFast and easy data collection and processingBorehole/well accessoriesTraffic volumeAutomatic control
The invention discloses an intelligent oil well simulation experiment system and a experiment method. The intelligent oil well simulation experiment system comprises a three-dimensional heterogenous reservoir simulating box, a wellbore hole simulator, a fluid injecting module, a fluid generating module, a data acquiring module, an automatic control module, a constant temperature module, a saturation probe, a pressure sensor and a temperature sensor. The wellbore hole simulator is arranged in the three-dimensional heterogenous reservoir simulating box, the automatic control modules realizes the real-time extraction and injection on the wellbore hole simulator through controlling the fluid injecting module and the fluid generating module; and the data acquiring module is used for monitoringinjected and extracted fluid, and monitoring the saturation, the temperature and the pressure in the simulating box in real time, and a computer is used for optimizing and analyzing the monitoring data, controlling the injection and extraction flow in real time through the automatic control module, simulating and realizing multilayer comingling production, sectional extraction of a horizontal well, extraction of a multi-branch well and control strategy of an injection and extracting well, and perfecting the researches of real-time optimization, real-time regulation and the like of the production.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Fiber optic cable for use in harsh environments
Fiber optic cables suitable for use in harsh environments such as down hole oil and gas well applications and methods for fabricating the same have been provided. In one embodiment, an optic cable suitable for down hole oil field applications comprises one or more optical fibers disposed in an inner tube and a corrosion resistant metal outer tube disposed over the inner tube, where the inner and outer tubes make intermittent contact. In another embodiment, an optic cable suitable for down hole oil field applications comprise one or more optical fibers disposed in a polymer tube having fins extending therefrom.
Owner:WEATHERFORD TECH HLDG LLC
Quantitative characterization method of low penetration double-medium sandstone oil reservoir microscopic aperture structure
ActiveCN103278436AIncrease reflectionAvoid one-sidednessPermeability/surface area analysisNMR - Nuclear magnetic resonanceRock core
The invention provides a quantitative characterization method of low penetration double-medium sandstone oil reservoir microscopic aperture structure, which comprises the following steps: selecting experiment samples, effectively combining various experiments, distributing samples, processing and analyzing experiment test data, combining macroscopic background and microscopic rock core, and combining static state analysis and dynamic production reality, thereby realizing quantitative characterization of ultra-low penetration double-medium sandstone oil reservoir microscopic aperture structure from qualitative analysis and semi-quantitative evaluation. The invention has the advantages that more comprehensive influence factors and micro crack, aperture throat parameter and nuclear magnetic resonance movable fluid parameter are considered, so the characterization result can better reflect change characteristics of ultra-low penetration double-medium sandstone oil reservoir microscopic aperture structure, which are consistent to the production exploitation real cases of the oil field, thereby effectively avoiding one-sidedness and limitation of single aspect evaluation result.
Owner:XI'AN PETROLEUM UNIVERSITY
Simultaneous tubular handling system and method
A system and method for building and handling oilfield tubular stands while drilling operations are simultaneously and independently occurring with one drilling deck, one derrick, and one rotary system. An offline guided path horizontal to vertical arm lifts and moves in the same plane tubulars stored horizontally on the catwalk and positions the tubulars vertically directly into a preparation hole for assembling and disassembling tubular stands while online drilling operations are simultaneously being conducted. A stand arm lifts and lowers the tubulars into and out of the adjustable preparation hole, and transports the tubulars for storage to an auxiliary tubular racking station in the upper part of the derrick. A bridge racker crane moves tubular stands from the auxiliary tubular racking station to the top drive or another tubular racking station.
Owner:FRIEDE & GOLDMAN UNITED BV
System and method for performing oilfield simulation operations
The invention relates to a method of performing a gas operation of an oilfield having a subterranean formation with at least one reservoir positioned therein. The method steps include modeling the gas operation of the oilfield using a multi-domain simulator by coupling a static model of the subterranean formation, a dynamic model of the subterranean formation, and a well model, wherein the multi-domain simulator comprises the static model, the dynamic model, and the well model, defining a development plan for the gas operation based on the modeling, and performing gas injection according to the development plan.
Owner:SCHLUMBERGER TECH CORP
Oil field water recycling system and method
InactiveUS20110017677A1Reduce water hardnessReduce chain lengthSpecific water treatment objectivesWater contaminantsChemical treatmentAnaerobic bacteria
The disclosure describes a novel approach for treating water, such as oilfield production waste. The disclosure describes novel methods for chemically treating contaminated water, such as chemical processes for softening water, demulsifying hydrocarbons, destroying a sequestering effect on divalent cations, destroying any detectable amount or over 99% of aerobic and anaerobic bacteria, and breaking long chain polymers. The disclosure further describes novel methods for clarifying contaminated water to remove suspended solids.
Owner:EVANS THOMAS S
Measurement while drilling bi-directional pulser operating in a near laminar annular flow channel
A device, method, and system for creating a pressure pulse from drilling fluid within a drill string in a down hole drill collar for enabling measurement-while drilling. The device and system are designed such that primarily laminar flow exists in the area surrounding the pulser apparatus. The method associated with the reproducible and essentially noise-free pulses occurs when a pulser bell is manipulated in an upward and downward direction by a combination of the solenoid activation of a bi-directional poppet to redirect the fluid flow from the pressure reservoir to and from a sliding pressure chamber and associated upper and lower flow connecting channels. The pulse or non-pulse is converted into a digital signal uphole by a pressure transducer in conjunction with a decoding algorithm. It is then displayed to the driller and oilfield operators as useful directional and formation information that help the oilfield operator for uphole decision making regarding directional drilling. Additional pulsers can be added to the tool so that higher data bit rates can be accomplished. These higher data bit rates will provide for more comprehensive data collection thereby reducing drilling costs and optimizing oil field yields. The higher bit rate allows for more sensors that can send additional and improved information uphole without the use of open hole wire line logging which is impossible to accommodate while drilling horizontally.
Owner:TELEDRILL
Method for analyzing remaining oil distribution of fractured-vuggy reservoir
ActiveCN102339339AScientific and rational developmentAchieve scientific descriptionSpecial data processing applicationsQuantitative determinationOil field
The invention provides a method for analyzing remaining oil distribution of a fractured-vuggy reservoir, belonging to the fields of numerical reservoir simulation and oil-gas field development. In the method, a complex medium consisting of a cave medium, a crack medium and a pore medium is partitioned into a plurality of space unit blocks in a space field; each block consists of V, F and M units which represent a cave, a crack and a substrate in the block respectively and constitute a V-F-M model; the flow of a multi-phase fluid in the complex medium is described by the motion of a fluid among the units in each block and the motion of a fluid among the units of different blocks; and the flow of the fluid among the units can be considered as infiltration flow, pipe flow or laminar flow between parallel walls, Darcy flow or non-Darcy flow. According to the method, scientific description and accurate numerical simulation of the fractured-vuggy reservoir are realized, and technical foundations are laid for the alignment of the remaining oil distribution position of the fractured-vuggy reservoir with a numerical simulation technology, quantitative determination of the reserves abundance of the reservoir, scientific and reasonable development of oil fields provided with the reservoir and final increase in the recovery ratio.
Owner:CHINA PETROLEUM & CHEM CORP +1
Emulsion deep profile/displacement control agent and preparation method of emulsion deep profile/displacement control agent containing gel microspheres of core shell structure
The invention relates to a preparation method of an emulsion deep profile / displacement control agent containing gel microspheres of a core shell structure. According to the method, materials are fed many times to carryout inverse emulsion low-temperature oxidation and reduction to initiate free radical polymerization so that water-solubility monomers (including acrylamide, ionic monomer I, the ionic monomer II and the third monomer) react with a cross-linking agent to generate the emulsion deep profile / displacement control agent containing gel microspheres of a core shell structure. The invention also relates to the emulsion deep profile / displacement control agent containing gel microspheres of a core shell structure, which is prepared by using the method. The profile / displacement control agent is a water-solubility microgel oil displacement material containing gel microspheres from nano scale to micron scale; with small initial grain size, the profile / displacement control agent can enter into the deep part of stratum; in addition, the profile / displacement control agent has high emulsion active component content and good flowability, can have volume expansion and mutual cementation under the actions of formation water and temperature according to the condition whether charges carried by the ionic monomers at a core layer and a shell layer are same or not; therefore the profile / displacement control requirements of different geological oil deposits of oil fields can be met.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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