经济极限计算方法:水被洪水井释放的阻塞层
1E&D Research Institute of Daqing Oilfield Company Ltd, Daqing, China.
PloS one
|February 24, 2025
概括
这项研究引入了一种新的公式,用于确定使用水驱动模式解密油库的经济极限. 这些发现有助于通过量化井的选择标准,考虑石油价格和投资回报来优化储备回收.
科学领域:
- 石油工程是石油工程中的一个.
- 储水库工程 储水库工程
- 增强石油回收的方法
背景情况:
- 大庆油田的聚合物泛滥导致了第一个开发层的密封,留下了巨大的未开发储备.
- 截至2021年,在II型油库中超过9603×104原油现场 (OOIP) 仍然封闭.
- 额外的穿孔和水驱动模式用于访问这些密封储备.
研究的目的:
- 建立一个公式来计算使用水驱动井模式解封先前密封的油库层的经济极限.
- 为选择储备释放的井和层提供可量化的标准.
- 为解决这个回收方法缺乏确定的经济边界标准的问题.
主要方法:
- 开发了一种基于平衡原则和漏流理论的公式.
- 为各种解密指数计算经济极限.
- 分析了油价和投资回报率 (ROI) 对生产限制的影响.
- 使用b1-40-527井的实际数据验证了公式.
主要成果:
- 随着石油价格的上,累计和每日石油产量限制下降.
- 经济限制随着投资回报率 (ROI) 的提高而增加.
- 对b1-40-527井的计算显示了基于石油价格和投资回报率的具体累积和每日石油产量限制.
- 实际数据证实,增加释放层厚度以达到计算限制,改善了石油生产,减少了水切割.
结论:
- 开发的公式有效量化了储备释放的经济和工程参数.
- 该方法为解密操作中的层选择提供了可靠的标准.
- 根据计算的经济限制调整释放的层厚度验证了解密策略的有效性.
相关概念视频
01:30Underflow Gates
35
Underflow gates are vital for controlling water flow in irrigation canals. The three main types of underflow gates — vertical, radial, and drum gates — serve different purposes while ensuring effective flow management. Vertical gates move up and down, generating a free-flowing water jet; radial gates pivot to regulate the flow; and drum gates rotate for precise adjustments. The flow through these gates is influenced by downstream conditions, resulting in free or drowned outflow.Free and...
35
01:17Design Example: Analyzing Capacity Contours for Flood Risk Assessment
36
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
36
01:11Design Example: Forces in Sluice Gate
299
In hydraulic engineering, sluice gates are essential for managing water flow through channels, reservoirs, and irrigation systems. Sluice gates, acting as vertical barriers, regulate water by adjusting the gate's opening height, which changes the velocity and pressure of water flowing beneath the gate. Understanding the forces involved is crucial to designing sluice gates that can withstand dynamic pressure differences, especially when the gate is closed or partially open.
Key variables in...
Key variables in...
299
01:04Application of the Energy Equation
535
The application of the energy equation to centrifugal pumps is a fundamental principle in fluid dynamics and engineering. In this scenario, the energy equation is used to calculate the flow rate of a centrifugal pump responsible for transferring water between two reservoirs at different elevations. The pump applies an energy input of 7500 joules per second, and the vertical difference between the lower and upper reservoirs is 10 meters. Additionally, the head loss due to friction and other...
535
01:26Weir: Problem Solving
35
Water flow in open channels is often measured using hydraulic structures such as weirs, which allow precise calculation of discharge. In a rectangular channel, flow rates are measured using three types of weirs: rectangular sharp-crested, triangular sharp-crested, and broad-crested. The weir head is set at a fixed height above the channel bottom, simplifying calculations and enabling the relationship between depth and flow rate to be analyzed.For the rectangular sharp-crested weir, the flow...
35
01:16Hydraulic Jump: Problem Solving
43
To analyze a hydraulic jump in a rectangular channel with a flow speed of 6 meters per second, follow these steps:Calculate Effective Upstream Velocity:When the downstream gate closes, a hydraulic jump forms, traveling upstream at 2 meters per second. This wave speed combines with the initial channel flow velocity, creating an effective upstream velocity.Identify Flow Velocities Before and After the Hydraulic Jump:Upstream of the hydraulic jump, the effective flow velocity includes both the...
43