首页> 外文会议>SPE Asia Pacific improved oil recovery conference (APIORC 01) >Sensitivity Study On Geomechanical Properties To Determine Their Impact On Fracture Dimensions And Gas Production In The Khuff And Pre-Khuff Formations Using A Layered Reservoir System Approach, Ghawar Reservoir, Saudi Arabia
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Sensitivity Study On Geomechanical Properties To Determine Their Impact On Fracture Dimensions And Gas Production In The Khuff And Pre-Khuff Formations Using A Layered Reservoir System Approach, Ghawar Reservoir, Saudi Arabia

机译:沙特阿拉伯Ghawar油藏的层状油藏系统方法确定其对Khuff和Pre-Khuff地层的裂缝尺寸和产气量的地球力学特性的敏感性研究

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A finite-difference hydraulic fracturing simulator has beenrnused to determine fracture growth and geometry in the Khuffrnand Pre-Khuff formations of the Ghawar gas reservoir. Arnlayered reservoir system approach has been used where eachrnreservoir is divided into several layers based on therngeomechanical and flow properties and reservoir lithology.rnSingle and multiple perforated interval scenarios have beenrnstudied to compute fracture growth and proppant transport.rnThe effects of geomechanical properties such as in-situ stress,rnYoung’s modulus, closure pressure, and rock embedmentrnstrength on fracture dimensions have been investigated.rnEffects of fluid properties such as, injected volume,rnpercentage of pad fluid, leakoff coefficient, etc. have also beenrninvestigated.rnSeveral examples with actual field data have beenrnpresented in the paper for reservoirs with multiple producingrnzones in which fracture is initiated in one or many intervalsrnsimultaneously so that the impact of perforations, mechanicalrnproperties, and flow characteristics could be identified andrncalculated. These examples illustrate the importance ofrnknowing the formation properties correctly and choosing thernmost appropriate treatment size and perforation strategy torneffectively fracture a reservoir.rnA sensitivity study on incremental gas production is alsornpresented in the paper. This study illustrates productionrnincrease as functions of reservoir and fracture properties andrnprovides a guideline to optimally choose fracture length andrnconductivity for an economic and efficient fracture treatment.
机译:已使用有限差分水力压裂模拟器来确定Ghawar气藏的Khuffrnand Pre-Khuff地层中的裂缝增长和几何形状。使用了Arnlayered储层系统方法,其中根据地质力学和流动特性以及储层岩性将每个储层划分为几层。研究了单个和多个射孔间隔方案来计算裂缝的增长和支撑剂运移.rnn地质力学特性(例如原位)的影响研究了应力,杨氏模量,闭合压力和岩石嵌入强度对裂缝尺寸的影响.rn对流体性质的影响,例如注入量,垫层流体的百分比,渗漏系数等也进行了研究.rn已经给出了一些具有实际现场数据的示例在本文中,对于具有多个生产区域的油藏,其中以一个或多个间隔同时开始破裂,从而可以识别并计算出射孔,力学性质和流动特性的影响。这些例子说明了正确认识地层性质,选择最合适的处理尺寸和射孔策略以有效地压裂储层的重要性。本文还对增产天然气进行了敏感性研究。这项研究说明了产量随储层和裂缝性质的变化而增加,并为经济有效地进行裂缝处理提供了最佳选择裂缝长度和传导率的指南。

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