73 results about "Reservoir management" patented technology

A method of real time field wide reservoir management comprising the steps of processing collected field wide reservoir data in accordance with one or more predetermined algorithms to obtain a resultant desired field wide production / injection forecast, generating a signal to one or more individual well control devices instructing the device to increase or decrease flow through the well control device, transmitting the signal to the individual well control device, opening or closing the well control device in response to the signal to increase or decrease the production for one or more selected wells on a real time basis. The system for field wide reservoir management comprising a CPU for processing collected field wide reservoir data, generating a resultant desired field wide production / injection forecast and calculating a target production rate for one or more wells and one or more down hole production / injection control devices.

The present invention discloses a method for performing a stochastic analysis of one or more hydrocarbon reservoir exploitation strategies taking into consideration one or more uncertain parameters. The method optimizes an objective function that considers the gain in value of a reservoir management goal attributable to these exploitation strategies. The methodology may be used to decide whether or not to implement a strategy. Alternatively, it may be used to decide which competing strategy will yield the maximum benefit. In another embodiment of the present invention, the value of information obtained from the installation of additional sensors or new measurements is also considered.

A system and method monitor a hydrocarbon reservoir for drainage in volumetric three dimensions. Monitoring between wells is imperative for optimum reservoir management and is achieved by mapping the hydrocarbon fluid pathways in a producing reservoir. Unlike conventional 4D or time-lapse reflection seismic imaging systems that use a controlled active seismic source and records reflected seismic energy at receivers, the system and method exploit the minute vibrations, or micro-earthquakes generated in the reservoir layers that are induced by fluid movement. These microseisms are detected as the fluids move in the reservoir.

A method of real time field wide reservoir management comprising the steps of processing collected field wide reservoir data in accordance with one or more predetermined algorithms to obtain a resultant desired field wide production / injection forecast, generating a signal to one or more individual well control devices instructing the device to increase or decrease flow through the well control device, transmitting the signal to the individual well control device, opening or closing the well control device in response to the signal to increase or decrease the production for one or more selected wells on a real time basis. The system for field wide reservoir management comprising a CPU for processing collected field wide reservoir data, generating a resultant desired field wide production / injection forecast and calculating a target production rate for one or more wells and one or more down hole production / injection control devices.

The method of the invention is applicable to oil production to obtain the impact of technical and economic uncertainties on the economic profitability of a reservoir and / or to optimize the position of a new well in order to meet a development strategy. The invention includes in stage 1, uncertain technical parameters having an influence on the reservoir production are selected; in stage 2, an analytic model expressing the reservoir production in the course of time is determined as a function of the parameters selected in stage 1, from production values obtained by means of a flow simulator; and in stage 3, a model expressing the economic profitability of the reservoir is determined as a function of the technical and economic parameters, from the analytic model determined in stage 2.

An overall petroleum reservoir production optimization methodology permits the identification and remediation of unstimulated, under-stimulated, or simply poorly performing reservoir completed intervals in a multilayer commingled reservoir that can be recompleted using any of various recompletion methods (including but not limited to hydraulic fracturing, acidization, re-perforation, or drilling of one or more lateral drain holes) to improve the productivity of the well. This provides an excellent reservoir management tool and includes the overall analysis and remediation methodology that has been developed for commingled reservoirs. The specialized recompletion techniques can be used to improve the productivity of previously completed individual reservoir intervals in a commingled reservoir.

In one embodiment of the present invention, a plunger for use in a plunger lift system of an oil or natural gas well is described. The plunger includes one or more sensor assemblies, each including one or more sensors for measuring various physical and operational conditions during the operation of the well. The data acquired from the sensors is stored in memory within the sensor assemblies and downloaded to the plunger lift system controller when the plunger is located in the catch / lubricator. The data can then be analyzed by the controller or other computer to vary the well's operating parameters to maximize the well's operating efficiency and the data can be used in reservoir management, such as transient testing, reservoir modeling and interference testing.

The present invention discloses a method for performing a stochastic analysis of one or more hydrocarbon reservoir exploitation strategies taking into consideration one or more uncertain parameters. The method optimizes an objective function that considers the gain in value of a reservoir management goal attributable to these exploitation strategies. The methodology may be used to decide whether or not to implement a strategy. Alternatively, it may be used to decide which competing strategy will yield the maximum benefit. In another embodiment of the present invention, the value of information obtained from the installation of additional sensors or new measurements is also considered.

Systems, program product, and methods for providing real-time reservoir management of one or more reservoirs across one or more fields are provided. A system can include multiple monitoring wells and at least one injection well in communication with a central facility including a reservoir management computer or server positioned to provide real-time reservoir management of the one or more reservoirs. The computer can include, stored in memory, reservoir management program code, which when executed, can cause the computer to perform the operations of calibrating an injection well model for each of one or more injection wells positioned in a reservoir responsive to real-time injection rate and wellhead pressure data associated therewith, calculating static reservoir pressure for each of the injection wells responsive to the respective calibrated injection well model and responsive to respective surface injection rate and wellhead pressure data, and generating real-time automated isobaric pressure maps.

Assessing the impact of existing fractures and faults for reservoir management, in one aspect, may comprise employing a numerical mesh to generate a geomechanical model, the numerical mesh representing a geological reservoir and its surrounding regions, the numerical mesh comprising delimitation associated with regions and layering of geology without constraining the numerical mesh to explicitly represent a fault or fracture, initializing the geomechanical model to define initial stress-strain compatible with measured stress in well locations associated with the geological reservoir, generating a fluid-flow model employing the numerical mesh, solving for a coupled solution of the fluid-flow model and the geomechanical model, and employing the solved fluid-flow model and the geomechanical model to assess the impact.

Systems and methods which implement surrogate (e.g., approximation) models to systematically reduce the parameter space in an optimization problem are shown. In certain embodiments, rigorous (e.g., higher fidelity) models are implemented with respect to the reduced parameter space provided by use of surrogate models to efficiently and more rapidly arrive at an optimized solution. Accordingly, certain embodiments build surrogate models of an actual simulation, and systematically reduce the number of design parameters used in the actual simulation to solve optimization problems using the actual simulation. A multi-stage method that facilitates optimization of decisions related to development planning and reservoir management may be provided. Iterative processing may be implemented with respect to a multi-stage optimization method. There may be uncertainty in various parameters, such as in reservoir parameters, which is taken into account according to certain embodiments.

The method of the invention is applicable to oil production to obtain the impact of technical and economic uncertainties on the economic profitability of a reservoir and / or to optimize the position of a new well in order to meet a development strategy. The invention includes in stage 1, uncertain technical parameters having an influence on the reservoir production are selected; in stage 2, an analytic model expressing the reservoir production in the course of time is determined as a function of the parameters selected in stage 1, from production values obtained by means of a flow simulator; and in stage 3, a model expressing the economic profitability of the reservoir is determined as a function of the technical and economic parameters, from the analytic model determined in stage 2.

A plunger for use in a plunger lift system of an oil or natural gas well includes one or more sensor assemblies, each including one or more sensors for measuring various physical and operational conditions during the operation of the well. The data acquired from the sensors is stored in memory within the sensor assemblies and downloaded to the plunger lift system controller when the plunger is located in the catch / lubricator. The data can then be analyzed by the controller or other computer to vary the well's operating parameters to maximize the well's operating efficiency and the data can be used in reservoir management, such as transient testing, reservoir modeling and interference testing.

The present invention is directed to methods for coupling seismometers and seismic sources to the ocean floor that results in improved seismic data quality and repeatability for reservoir management and seismic monitoring activities. Piles are configured with a coupling device and permanently installed on the ocean floor. The seismometers or seismic sources are acoustically coupled to the piles on the ocean floor via the coupling device. The pile, seismometer and seismic source may be surface treated with a material that releases divalent cations to enhance both the acoustic coupling and the load holding capacity of the pile. The pile is permanently imbedded into the seabed while the expensive and high-maintenance seismometers and seismic sources are redeployed on the piles as needed.

The present invention relates to a positron tomography imaging apparatus for a multiphase flow in an oil pipeline, which apparatus utilizes positron and electron annihilation generating a pair of coincidence gamma-rays of 511 keV energy as tomography imaging means and provides an on-line tomography imaging function for metering a multiphase flow in an oil pipeline of an oil field. The apparatus comprises a plurality of sets of parallel high-precision gamma-ray detector arrays with a particular space structure arrangement, a positron radioactive source and a shield, and can acquire a phase fraction of such multiphase flow mixture as oil, gas and water under a condition of a single radioactive source by combining an image processing function. The design of a plurality of sets of high-precision detector arrays also greatly improves accuracy of a multiphase flow metering and its applicability in multiphase flows of different flow patterns. The video information of fluid generated by it will significantly enrich oil, gas metering information for petroleum industry and provide basic data for a more effective reservoir management and production optimization.

Embodiments of the invention include systems, methods, and computer-readable mediums for optimizing the placement of wells in a reservoir. Embodiments include, for example, determining for a reservoir a productivity index for each coordinate of a reservoir using reservoir metrics associated with the reservoir, generating a grid pattern of the reservoir using the productivity index with time values extracted for each coordinate, determining a total dynamic productivity index for each coordinate, and determining placement of one or more wells responsive to the total dynamic productivity index and minimum spacing between the one or more wells. Embodiments further include, for example, generating a production analysis report for the reservoir that includes an assessment of well placement and generating a wells placement map using one or more total dynamic productivity index indicators.

The wettability of a formation may be estimated using a multi-frequency dielectric measurement tool. Multi-frequency dielectric dispersion measurements are made using the multi-frequency dielectric measurement tool on a sample. The bulk density and the total porosity of the sample are also otherwise acquired. The bulk density, matrix permittivity, total porosity, and multi-frequency dielectric dispersion measurements are input into a petrophysical dielectric model and the petrophysical dielectric model is applied to obtain inversion results. A wettability state of the sample is determined using the inversion results and one or more reservoir management decisions are made based on the determined wettability state of the sample. A non-transitory, computer-readable storage medium may be provided that has stored on it one or more programs that provide instructions. The instructions are executed by a processor and cause the processor to develop an estimation of formation wettability that may be used for reservoir management.

A method of improving operation of a petroleum reservoir using geotechnical analysis includes classifying a petroleum reservoir using a Reservoir Ranking Analysis (RRA) and then making one or modifications to the operation of the reservoir. RRA classification includes establishing reservoir classification metrics for at least resource size and recovery potential, and optionally profitability. The reservoir can be classified based on at least one metric in the profitability classification category, and also based on at least one metric in one or more of the resource size classification category or the recovery potential classification category. Classification of reservoirs can aid in reservoir management, planning, and development.

According to the method for well and reservoir management in open hole completions, a data acquisition module (100) is advanced through the wellbore and acquires data providing information revealing fractures in the wall of the wellbore, and at least one blocking system (1002, 3000), on the basis of the data acquired, is placed in the wellbore(199, 2199, 3006) at the location of a fracture in the wall. The data acquisition module (100) is advanced by interaction with a fluid present in the wellbore, and the data acquisition module acquires data providing information on its own position in relation to the wall (3005) of the wellbore (199, 2199, 3006) and is controlled on the basis of said data in order to maintain a distance to the wall of the wellbore during its advancement. A system for well and reservoir management in open hole completions is further disclosed.

The invention discloses a system and method for improving quality of water regimen / water transfer data. The system comprises an SCAD module, a water regimen / water transfer database, a data quality parameter calibration module, a data quality discrimination and analysis module and a data processing module, wherein the water regimen / water transfer database is connected with each of the SCAD module,the data quality parameter calibration module, the data processing module and the data quality discrimination and analysis module; and the data quality discrimination and analysis module is connectedwith the data processing module. The system has the functions of automatic data quality discrimination parameter calibration and updating, online data exception detection and automatic data processing, so that online exception discrimination and processing can be carried out on data, thereby effectively decreasing manual workload in water regimen / water transfer data quality analysis and data exception processing, improving the quality of water regimen / water transfer data and the efficiency of data quality management, and improving the reservoir management level.

The invention discloses a water and rain condition automatic measuring and reporting system. The system comprises a dynamic management application module, a small and medium-sized reservoir dynamic supervision system and an intelligent remote measurement terminal. The dynamic management application module and the small and medium-sized reservoir dynamic supervision system are both connected with adatabase system. The database system is connected with remote data receiving software. The remote data receiving software is connected to the intelligent telemetering terminal. The intelligent telemetering terminal is connected with a rain condition measurement unit, an image acquisition unit and a water level measurement unit. According to the invention, a microprocessor control technology and an embedded operating system are utilized, a complete set of reservoir water and rain condition and work condition information acquisition subsystem is formed. Information is transmitted to a background database management system through a GPRS communication means, and the information is stored, managed, inquired and warned by using a background reservoir management information system, so that a complete set of reservoir dynamic supervision system is formed.

The invention provides a reservoir multi-level management mobile application system based on cloud service. The reservoir multi-level management mobile application system is characterized by comprising a data acquisition layer, a data conversion layer, a cloud service platform layer and a mobile application layer, wherein the data acquisition layer is deployed on a reservoir site, different instruments or devices are installed according to needs to obtain reservoir dam real-time monitoring reservoir information, and the data types of the reservoir information comprise engineering characteristics, water conditions, rain conditions, dam safety monitoring, flood forecasting and dispatching, gate monitoring, video monitoring, personnel materials and operation management information; and storing the reservoir operation original data acquired by the data acquisition layer in an original database. The invention aims to provide a reservoir multi-level management mobile application system basedon cloud service, so as to improve the timeliness and convenience of reservoir dynamic supervision of each level of reservoir management department, break through the limitation of reservoir management in professional technology and time space, and fundamentally solve the problems of reservoir multi-level real-time dynamic supervision and the like.

The invention relates to the field of water environment simulation, and discloses a two-dimensional mesoscopic numerical value simulation method of the water age of surface water. A lattice Boltzmann method is combined with a concept of the water age, the water age can be calculated from the essence of particle movement, and therefore, a model can more accurately and efficiently simulate water quality. A hydrodynamic force-water age model is applied to the Danjiangkou reservoir, so that the water quality variation trend of the Danjiangkou reservoir can be predicted, a relocation diffusion rule of pollutant in a water body can be obtained, an area where eutrophication may happen can be predicted, and a scientific basis is provided for reservoir management; through the cross fusion of the lattice Boltzmann method and water age calculation, two water age simulation methods, i.e., an Eulerian method and a Lagrange method, on the basis of the lattice Boltzmann method are developed; a calculated amount generated when the Lagrange method is used for calculating the water age is lowered, the feasibility of the method is increased, and meanwhile, the development of the lattice Boltzmann method in the field of water quality models can be accelerated; and the lattice Boltzmann method is applied to the calculation of the water age of the Danjiangkou reservoir and is further tightly combined with practical research.

A permanent monitoring tool is provided and disposed in a wellbore. Measurements are made at different times using the permanent monitoring tool on a region of a formation penetrated by the wellbore. One or more properties of the formation are inferred at one or more depths of investigation within the region using the measurements. Any changes in the one or more inferred formation properties are determined and one or more reservoir management decisions are made based on the determined changes. The well may be an observation well, an injector well, or a production well. The permanent monitoring tool may be a magnetic resonance tool or an electromagnetic tool. The measurements may be stacked to improve the signal-to-noise ratio of the signal. Different depths of investigation may be selected using antenna arrays of different lengths. The inferred properties may be saturation or resistivity. Conductive or non-conductive casing may be used.