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1.发明授权公开(公告)号：US11619115B2
公开(公告)日：2023-04-04
申请号：US16311660
申请日：2016-07-27
发明人： Joshua Lane Camp , Tyler Austen Anderson , Aaron Gene Russell , Srinath Madasu , Karan Dhuldhoya , Ubong Inyang
IPC分类号： E21B41/00 , E21B43/267 , E21B47/11 , E21B47/107 , E21B43/26 , E21B47/06 , E21B49/00
摘要： System and methods of controlling fluid flow during reservoir stimulation treatments are provided. A flow distribution of treatment fluid injected into formation entry points along a wellbore path is monitored during a current stage of a multistage stimulation treatment. Upon determining that the monitored flow distribution meets a threshold, a remainder of the current stage is partitioned into a plurality of treatment cycles and at least one diversion phase for diverting the fluid to be injected away from one or more formation entry points between consecutive treatment cycles. A portion of the fluid to be injected into the formation entry points is allocated to each of the treatment cycles of the partitioned stage. The treatment cycles are performed for the remainder of the current stage using the treatment fluid allocated to each treatment cycle, wherein the flow distribution is adjusted so as not to meet the threshold.
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公开(公告)号：US11421515B2
公开(公告)日：2022-08-23
申请号：US16332748
申请日：2016-12-09
发明人： Srinath Madasu , Dipti Singh
摘要： A method comprises: deriving fluid properties that provide for suspension of particulate diverting agents using a 3-dimensional flow model and based on a downhole temperature and at least one size characteristic of the particulate diverting agents; identifying a treatment fluid composition that comprises a nanoparticulate suspending agent and achieves the fluid properties using a relationship between the treatment fluid composition and the fluid properties; and preparing a treatment fluid or a treatment fluid additive based on the treatment fluid composition.
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公开(公告)号：US11187074B2
公开(公告)日：2021-11-30
申请号：US16349385
申请日：2017-01-13
摘要： A system and method to determine closure pressure in a wellbore that can include, flowing a fracturing fluid into the wellbore during a fracturing operation of at least one stage and forming a fracture, sensing fluid pressure and a flow rate of the fracturing fluid during the fracturing operation and communicating the sensed data to a controller, plotting data points of the sensed data to a visualization device which is configured to visually present the data points to an operator as a plot, fitting a curve to the data points which represent statistically-relevant minimum pressure data at various flow rates, determining an intercept of the first curve with a zero flow rate axis of the plot, determining the closure pressure based on a pressure value of the intercept, and determining an average fracture permeability based on the closure pressure.
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公开(公告)号：US10970620B2
公开(公告)日：2021-04-06
申请号：US15699531
申请日：2017-09-08
发明人： Srinath Madasu , Ronald Glen Dusterhoft , Vladimir Nikolayevich Martysevich , Yucel Akkutlu , Brice Y. Kim
摘要： Historical information about a significant input parameter is stored in a data analytics model of a hydrocarbon reservoir. A historical deep recursive neural network (RNN) model is built based on time-series production data from the hydrocarbon reservoir as a function of the significant input parameter in the data analytics model. The historical deep RNN neural network model is stored on a data storage device. An experiment using the historical deep neural network model is designed to predict the significant input parameter. The experiment is run to produce a significant experimental input parameter. The significant experimental input parameter is compared to the significant input parameter stored in the data analytics model to determine a difference. The data analytics model is adjusted to reduce the difference.
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公开(公告)号：US20190309618A1
公开(公告)日：2019-10-10
申请号：US16340441
申请日：2016-11-07
发明人： Ubong Inyang , Srinath Madasu
摘要： A system includes a processor(s), and a memory coupled to the processor(s) having instructions stored therein. When executed by the processor(s), the instructions cause the processor(s) to perform functions to: apply a treatment for stimulating production to at least a first well in a subterranean formation; determine a flow distribution based on at least one of a first-well measurement or a second-well measurement, the first-well measurement taken at the first well, and the second-well measurement taken at a second well; determine a length of a fracture between the first and second wells, based on the determined flow distribution; determine if the applied treatment at the first well interferes with the second well, based on the determined length of the fracture; and apply a diverting material at the first well if it is determined that the applied treatment interferes with the second well, in order to control well bashing.
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6.发明申请公开(公告)号：US20190136680A1
公开(公告)日：2019-05-09
申请号：US16096614
申请日：2016-07-29
发明人： Srinath Madasu , Avi Lin
IPC分类号： E21B43/267 , E21B43/12 , C09K8/62
摘要： A hydraulic fracturing flow simulation method includes identifying one or more reservoir layers contacted by a wellbore, the reservoir layers including a network of fractures. The method further includes determining a current network state that includes flow parameter values at discrete points arranged one-dimensionally along the wellbore and at discrete points arranged one-dimensionally along each fracture, the flow parameter values including concentrations of multiple proppant types or sizes. The method further includes constructing a set of linear equations for deriving a subsequent network state from the current network state while accounting for interaction and settling of the multiple proppant types or sizes. The method further includes repeatedly solving the set of linear equations to obtain a sequence of subsequent network states. The method further includes displaying the time-dependent spatial distribution.
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公开(公告)号：US20180274337A1
公开(公告)日：2018-09-27
申请号：US15762379
申请日：2015-11-12
发明人： Brian A. Freno , Srinath Madasu , Avi Lin
CPC分类号： E21B41/0092 , E21B43/26 , E21B49/00 , E21B49/08
摘要： An illustrative hydraulic fracturing simulation method includes: creating an initial mesh representation of a subterranean formation, the mesh including mesh nodes; determining one or more fracture paths in the formation; for each of the one or more fracture paths, displacing a subset of the mesh nodes into alignment with the fracture path; interpolating from displacements of the aligned mesh nodes to obtain displacements for each non-aligned mesh node in the mesh, thereby obtaining a deformed mesh representation of the formation; using the deformed mesh to construct a linear set of equations representing fracture creation and propagation caused by injection of a hydraulic fracturing fluid; deriving one or more fracture path extensions from the linear set of equations; and displaying the one or more fracture paths with the one or more fracture path extensions accurately representing the fracture propagation path. The interpolation may be performed using radial basis functions.
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8.发明申请CONNECTION CONDITIONS FOR MODELING FLUID TRANSPORT IN A WELL SYSTEM ENVIRONMENT 有权在良好的系统环境中建立流体运输的连接条件公开(公告)号：US20150066446A1
公开(公告)日：2015-03-05
申请号：US14011349
申请日：2013-08-27
发明人： Avi Lin , Srinath Madasu
CPC分类号： E21B43/00 , E21B43/26 , G06F17/5018 , G06F2217/16
摘要： In some aspects, flow path connection conditions are generated for a flow path intersection in a one-dimensional fluid flow model. The one-dimensional fluid flow model represents a flow of well system fluid in a well system environment. The flow path connection conditions conserve fluid momentum among three or more flow path branches that meet at the flow path intersection. Fluid flow is simulated in the fracture network by operating the one-dimensional fluid flow model based on the connection condition.
摘要翻译： 在一些方面，针对一维流体流动模型中的流动路口交叉产生了流动路径连接条件。 一维流体流动模型表示井系统环境中的井系统流体流。 流路连接条件节省了在流路交点处相遇的三个或更多个流路分支之间的流体动量。 通过基于连接条件操作一维流体流动模型，在裂缝网络中模拟流体流动。
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公开(公告)号：US11702931B2
公开(公告)日：2023-07-18
申请号：US16340441
申请日：2016-11-07
发明人： Ubong Inyang , Srinath Madasu
CPC分类号： E21B47/10 , E21B33/13 , E21B43/26 , E21B47/06 , E21B47/07 , E21B47/09 , E21B49/00 , E21B49/006
摘要： A system includes a processor(s), and a memory coupled to the processor(s) having instructions stored therein. When executed by the processor(s), the instructions cause the processor(s) to perform functions to: apply a treatment for stimulating production to at least a first well in a subterranean formation; determine a flow distribution based on at least one of a first-well measurement or a second-well measurement, the first-well measurement taken at the first well, and the second-well measurement taken at a second well; determine a length of a fracture between the first and second wells, based on the determined flow distribution; determine if the applied treatment at the first well interferes with the second well, based on the determined length of the fracture; and apply a diverting material at the first well if it is determined that the applied treatment interferes with the second well, in order to control well bashing.
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10.发明申请公开(公告)号：US20210332684A1
公开(公告)日：2021-10-28
申请号：US16325702
申请日：2016-09-09
IPC分类号： E21B43/267 , E21B49/08 , E21B47/06
摘要： System and methods of controlling diversion for stimulation treatments in real time are provided. Input parameters are determined for a stimulation treatment being performed along a wellbore within a subsurface formation. The input parameters include selected treatment design parameters and formation parameters. A step-down analysis is performed to identify friction components of a total fracture entry friction affecting near-wellbore pressure loss during the stimulation treatment. Efficiency parameters are determined for a diversion phase of the stimulation treatment to be performed along a portion of the wellbore, based on the input parameters and the friction components. An amount of diverter to be injected during the diversion phase of the stimulation treatment is calculated based at least partly on the efficiency parameters. The diversion phase of the stimulation treatment is performed by injecting the calculated amount of diverter into the subsurface formation via perforations along the portion of the wellbore.
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