WTC1井口安装自主研发的毫秒级高频压力设备，实时发送到云端，通过云端处理将相关数据发送到公司的计算中心进行数据解密和数据分发，分发后的数据进入超算中心进行波动分析、渗流分析及数值模拟，根据计算结果自动形成解释报告，发送到施工现场。
在WTC1井注水过程中高频压力监测，得到了测试数据，采用自主研发的高频分析软件进行分析计算。
| 数据 | 类型 | 辰工分析软件 | 备注 |
|---|---|---|---|
| 高频压力波数据 | 倒谱分析数据 | 进液点分析软件 | 注水期间压力分析，评价进液位置和进液量 |
| 压力恢复数据 | 关井压力测试数据 | 试井分析系统 | 获得渗透率、井筒表皮、井筒存储、测试波及范围、原始地层压力等参数 |
本项目对WTC1井干扰测试期间数据实时监测及解释，取得以下测试效果：
通过水击波的倒谱分析得到注入水在地下的分布、吸水层的位置与吸入量等数据。
对压力恢复数据进行解释，得到渗透率、井筒表皮、井筒存储等地层参数，为干扰测试评价提供数据支撑。
WTC1 wellhead is equipped with self-developed millisecond level high-frequency pressure equipment, which is sent to the cloud in real time. Through cloud processing, the relevant data is sent to the company's computing center for data decryption and distribution. The distributed data enters the supercomputing center for fluctuation analysis, seepage analysis, and numerical simulation. Based on the calculation results, an interpretation report is automatically generated and sent to the fracturing site.
High frequency pressure monitoring was conducted during the water injection process in WTC1 well, and test data was obtained. The independently developed high-frequency analysis software was used for analysis and calculation.
| data | type | software | function |
|---|---|---|---|
| High frequency pressure wave data | Cepstral analysis data | Inlet point analysis software | Pressure analysis during water injection to evaluate the inlet position and volume |
| Pressure recovery data | Data from shut in pressure test | Well testing analysis system | Obtain parameters such as permeability, wellbore skin, wellbore storage, test coverage, and original formation pressure |
This project achieved the following testing results by monitoring and interpreting real-time data during the interference testing period of WTC1 well:
Obtain data on the distribution of injected water underground, the location and suction volume of the water absorbing layer through cepstral analysis of water hammer waves.
Interpret pressure recovery data to obtain formation parameters such as permeability, wellbore skin, and wellbore storage, providing data support for interference testing and evaluation.
To verify the change of seepage capacity of gas well water in the
process of stable casing pressure gas release reaching production capacity.
Compare the formation pressure recovery of the same well before
and after casing pressure.
To verify the layered water production capacity of drainage
process before layered combined production and desorption.
Put forward a new concept of pressure-drainage-production whole
process analysis for optimization of CBM drainage system.