实验确定碳酸盐岩油气藏酸压裂缝导流能力分布的方法

    公开(公告)号:WO2018121046A1

    公开(公告)日:2018-07-05

    申请号:PCT/CN2017/109019

    申请日:2017-11-02

    IPC分类号: E21B49/00 E21B43/27

    摘要: 一种实验确定碳酸盐岩油气藏酸压裂缝导流能力分布的方法,该方法包括:采用酸压模拟器 FracproPT 模拟酸压过程中井下酸压裂缝延伸扩展、酸刻蚀过程,获取沿着水力缝长方向的缝宽分布、缝高分布、温度分布、酸液质量浓度分布数据;在水力裂缝缝长方向选取酸液质量浓度为初始质量浓度的100%、90%、80%、70%、60%、50%、40%、30%、20%、10%共10个特征点的缝宽、缝高、温度数据;将油田现场尺度的注酸排量转换为实验室尺度的注酸排量;按照10个特征点的酸液质量浓度数据配置实验所用的酸液;模拟酸刻蚀过程,实验测试储层闭合压力条件下的导流能力,绘制储层条件下酸蚀裂缝导流能力沿缝长方向的分布图。该方法原理可靠,操作简便,具有广阔的市场前景。

    DETERMINING ACTIVE CONSTRAINTS IN A NETWORK USING PSEUDO SLACK VARIABLES
    3.
    发明申请
    DETERMINING ACTIVE CONSTRAINTS IN A NETWORK USING PSEUDO SLACK VARIABLES 审中-公开
    利用PSOUDO SLACK VARIABLES确定网络中的主动约束条件

    公开(公告)号:WO2018084850A1

    公开(公告)日:2018-05-11

    申请号:PCT/US2016/060539

    申请日:2016-11-04

    IPC分类号: E21B41/00 G06F17/11 E21B47/00

    摘要: A method for determining active constraint equations in a network of wells and surface facilities includes constructing at least one constraint equation for a connection in the network. Each constraint equation includes a respective slack variable and a respective slack variable multiplier. The method further includes constructing a base equation for the connection. The base equation includes the respective slack variable and another respective slack variable multiplier. The method further includes introducing a pseudo slack variable for another connection in the network such that a Schur complement, of a matrix of constraint and base equations dependent only on slack variable multipliers, is sparse. The method further includes solving for each respective slack variable using the Schur complement matrix. The method further includes adjusting a variable parameter of the network using results from solving for each respective slack variable.

    摘要翻译: 用于确定井和地面设施的网络中的主动约束方程的方法包括构建用于网络中的连接的至少一个约束方程。 每个约束方程包括相应的松弛变量和相应的松弛变量乘数。 该方法还包括构建连接的基础等式。 基本等式包括相应的松弛变量和另一个相应的松弛变量乘数。 该方法还包括为网络中的另一连接引入伪松弛变量,使得仅与松弛变量乘数相关的约束矩阵和基本方程的舒尔补充是稀疏的。 该方法还包括使用Schur补充矩阵求解每个相应的松弛变量。 该方法还包括使用解决每个各自的松弛变量的结果来调整网络的可变参数。

    METHOD AND CONTROL SYSTEM FOR ALLOCATING STEAM TO MULTIPLE WELLS IN STEAM ASSISTED GRAVITY DRAINAGE (SAGD) RECOURCE PRODUCTION
    4.
    发明申请
    METHOD AND CONTROL SYSTEM FOR ALLOCATING STEAM TO MULTIPLE WELLS IN STEAM ASSISTED GRAVITY DRAINAGE (SAGD) RECOURCE PRODUCTION 审中-公开
    在蒸汽辅助重力泄油(SAGD)再生产中分配蒸汽到多个井的方法和控制系统

    公开(公告)号:WO2018044291A1

    公开(公告)日:2018-03-08

    申请号:PCT/US2016/049645

    申请日:2016-08-31

    IPC分类号: E21B43/24

    摘要: A system includes a steam distributor 124 configured to distribute steam received from a steam generator 122 to multiple injection wells 106 in a well pad 102 for steam assisted gravity drainage (SAGD) resource production. The system also includes one or more processors 128 configured to control the steam distributor to distribute the steam to the injection wells according to a resultant scheme including values representing multiple parameters for the SAGD resource production. The parameters include the allocated quantities of steam, pressures within multiple production wells associated with the injection wells, and time periods that the steam is directed into the injection wells. The one or more processors are configured to determine the resultant scheme by performing multiple iterations of a surrogate evaluation process until a stop criterion is met, and identifying the resultant scheme as the sample scheme of a final iteration prior to the stop criterion being met.

    摘要翻译: 系统包括蒸汽分配器124,蒸汽分配器124被配置为将从蒸汽发生器122接收的蒸汽分配到井垫102中的多个注入井106用于蒸汽辅助重力排水(SAGD)资源生产。 该系统还包括一个或多个处理器128,该一个或多个处理器128被配置成根据包括表示用于SAGD资源生产的多个参数的值的结果方案来控制蒸汽分配器将蒸汽分配到注入井。 这些参数包括分配的蒸汽量,与注入井有关的多个生产井内的压力以及蒸汽被引入注入井的时间段。 所述一个或多个处理器被配置为通过执行替代评估过程的多次迭代来确定结果方案,直到满足停止标准,并且在停止标准被满足之前将所得到的方案识别为最终迭代的样本方案。 / p>

    Real-Time Self-Consistency Quality Indicators for Multi-Component Induction Tools
    5.
    发明申请
    Real-Time Self-Consistency Quality Indicators for Multi-Component Induction Tools 审中-公开
    多组件感应工具的实时自我一致性质量指标

    公开(公告)号:WO2018006070A1

    公开(公告)日:2018-01-04

    申请号:PCT/US2017/040489

    申请日:2017-06-30

    IPC分类号: E21B44/00 E21B47/12 G01V11/00

    摘要: According to at least some embodiments, a method of processing inversion results corresponding to a plurality of parameters of a subterranean formation includes obtaining measurements of the subterranean formation from a multi-component induction (MCI) tool. The method further includes inverting the measurements to determine a first estimated value of a parameter of the plurality of parameters. The method further includes determining at least a second estimated value of the parameter, and assessing a quality of the inverted measurements by comparing the first estimated value with the at least a second estimated value.

    摘要翻译: 根据至少一些实施例,处理对应于地下地层的多个参数的反演结果的方法包括从多分量感应(MCI)工具获得地下地层的测量结果。 该方法还包括反转测量以确定多个参数的参数的第一估计值。 该方法还包括确定参数的至少第二估计值,并通过比较第一估计值与至少第二估计值来评估倒置测量的质量。

    SEQUENTIAL FULLY IMPLICIT WELL MODEL WITH TRIDIAGONAL MATRIX STRUCTURE FOR RESERVOIR SIMULATION
    8.
    发明申请
    SEQUENTIAL FULLY IMPLICIT WELL MODEL WITH TRIDIAGONAL MATRIX STRUCTURE FOR RESERVOIR SIMULATION 审中-公开
    含三叠系矩阵结构的顺序全隐含井模型在储层模拟中的应用

    公开(公告)号:WO2017151844A1

    公开(公告)日:2017-09-08

    申请号:PCT/US2017/020327

    申请日:2017-03-02

    发明人: DOGRU, Ali, H.

    IPC分类号: E21B49/00 E21B41/00

    CPC分类号: E21B49/00

    摘要: A subsurface hydrocarbon reservoir with a horizontal well or multiple vertical wells is simulated by sequential solution of reservoir and well equations to simulate fluid flow inside the reservoir and well production rates. Sequential solution of reservoir and well equations treats wells as specified bottom hole pressure wells. This avoids solving large matrices resulting from the simultaneous solution of the reservoir and well equations which can be computationally very expensive for large number of unknowns and require special sparse matrix solvers. Such sequential solution involves regular reservoir system solvers complemented by small matrices for the numerical solution of the well bottom hole pressures. The solution is performed on tridiagonal matrices for the adjacent reservoir cells to the well cells at the perforated well intervals; and a vector of the unknown reservoir potentials for the adjacent reservoir cells.

    摘要翻译: 通过油藏和井方程的顺序求解来模拟具有水平井或多个垂直井的地下油气藏,以模拟油藏内的流体流动和井的生产速率。 水库和井方程的顺序解将井视为指定的井底压力井。 这避免了求解由储层和井方程的同时求解产生的大矩阵,对于大量的未知数而言这在计算上可能非常昂贵并且需要特殊的稀疏矩阵求解器。 这种顺序解决方案涉及常规油藏系统求解器,辅以小型矩阵,用于井底压力的数值解。 该解决方案在相邻的储层单元的三对角矩阵上在穿孔井段处进行到井单元; 以及相邻储层单元的未知储集层电势向量。

    SYSTEM AND METHOD FOR GENERATING A SCHEDULE TO EXTRACT A RESOURCE FLUID FROM A RESERVOIR
    9.
    发明申请
    SYSTEM AND METHOD FOR GENERATING A SCHEDULE TO EXTRACT A RESOURCE FLUID FROM A RESERVOIR 审中-公开
    用于生成从储层中提取资源流体的计划的系统和方法

    公开(公告)号:WO2017143326A1

    公开(公告)日:2017-08-24

    申请号:PCT/US2017/018608

    申请日:2017-02-20

    IPC分类号: G06Q10/06

    摘要: System includes one or more processors that are configured to perform iterations of the following until a predetermined condition is satisfied. The one or more processors are configured to select a modified trial schedule. The modified trial schedule is selected based on initial fluid-extraction data and initial trial schedules and, if available, prior modified trial schedules and prior modified fluid-extraction data from prior iterations. The one or more processors are configured to receive modified fluid-extraction data generated by execution of the modified trial schedule with a designated model of the reservoir. The one or more processors are also configured to update the surrogate model with the modified fluid-extraction data and the modified trial schedule. For at least a plurality of the iterations, the modified trial schedule is selected, at least in part, to reduce uncertainty in a sample space as characterized by the surrogate model.

    摘要翻译: 系统包括一个或多个处理器,其被配置为执行以下的迭代直到满足预定条件。 该一个或多个处理器被配置为选择修改的试验时间表。 根据初始流体提取数据和初始试验计划以及(如果有的话)先前修改的试验计划和事先修改的来自先前迭代的流体提取数据来选择修改的试验计划。 所述一个或多个处理器被配置为接收通过用所述储层的指定模型执行修改的试验时间表而生成的修改的流体提取数据。 该一个或多个处理器还被配置为用修改的流体提取数据和修改的试验计划更新替代模型。 对于至少多次迭代,至少部分地选择修改后的试验时间表,以降低由替代模型表征的样本空间中的不确定性。

    一种岩层应力变化温度响应监测装置

    公开(公告)号:WO2017140007A1

    公开(公告)日:2017-08-24

    申请号:PCT/CN2016/076018

    申请日:2016-03-09

    IPC分类号: G01L1/22 G01K1/08

    摘要: 一种岩层应力变化温度响应监测装置,包括:应力应变传感器(10),置于岩层钻孔(40)底部,用膨胀水泥(50)充填,用于检测岩层的应力变化;温度响应放大组件,安置在钻孔(40)内所述应力应变传感器(10)的上方,也用膨胀水泥(50)充填,用于检测所述应力变化引起的温度变化量,并将该温度变化量进行放大;电源控制与数据采集模块(30),置于钻孔(40)外,用于为所述应力应变传感器(10)和温度响应放大组件供电,并采集所述应力变化及放大后的温度变化量。采用应力-温度响应系数较高的硅胶或橡胶来封装温度传感器(22),使得监测的岩层钻孔应力-温度响应效应得到有效放大,可大大提高应力和温度变化监测的分辨率和灵敏度,而且温度传感器(22)的封装工艺非常简洁,容易制作、成本低。