Quantitative multi-species hydrocarbon metrology in gas pipelines -- enhancing commercialization potential by extension to new laser wavelengths

天然气管道中的定量多物种碳氢化合物计量——通过扩展到新的激光波长来增强商业化潜力

基本信息

批准号：
ST/T003251/1
负责人：
Derryck Reid
金额：
$ 8.85万
依托单位：
Heriot-Watt University
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2019
资助国家：
英国
起止时间：
2019 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FT003251%2F1
关键词：
Quantitative multi species hydrocarbon metrology

项目摘要

SUMMARY OF THE ORIGINAL PROJECT:Accurately monitoring the composition and flow-rate of natural gas from a petroleum reservoir is critical for extraction companies to quantify the productivity of their oil and gas fields. Our new project "Quantitative multi-species hydrocarbon metrology in gas pipelines" (ST/T000635/1) identified an opportunity for a first-to-market system integrating broadband, high-resolution mid-infrared spectroscopy into a conventional gas-flow meter. The project is supported by >£400K direct and in-kind contributions from industrial partners GM Flow Ltd. (a leader in dry-gas metering) and Chromacity Ltd. (a tunable laser manufacturer), and seeks to use fibre-delivered light from a pre-existing 3 - 4um laser to quantify the abundance of gaseous alkanes carried in pipelines from the production reservoir. The project methodology exploits high-resolution Fourier-transform laser spectroscopy and an innovative baseline-extraction algorithm, both emerging from an earlier STFC project (ST/P00699X/1), which resulted in a recent patent application and journal paper. Broadband mid-IR light is modulated by a scanning Michelson interferometer functioning as a high-resolution Fourier-transform spectrometer. This light is then fibre-coupled and used to interrogate gas sampled into a metrology cell at a flow meter. Our unique algorithm is used to extract the concentrations of the multiple gas species present.Heriot-Watt will manage the project and take responsibility for the hardware and software development associated with the multi-species gas spectrometer, and will collaborate with three partners as follows:* GM Flow manufacture flow meters for the "dry gas" market, and will engineer an integrated module that uniquely allows in-situ gas composition sampling and spectroscopy at the flow meter.* Chromacity, a HWU spin-out manufacturing near- to mid-IR femtosecond lasers, will lead the system integration of the laser, spectrometer, delivery-fibre, gas flow meter and software.* Southampton University will provide new "airguided" mid-IR fibres, complementing commercially available solid-core fibres and potentially offering superior long-range transmission characteristics.SUMMARY OF THE PROPOSED CAPITAL EQUIPMENT AND THE ADDED VALUE IT WILL PROVIDE:Our request to STFC is for 65% funding of a variant of a Chromacity Spark-OPO, providing broadband coverage across the 2.4-3.1-um region. Co-funding of 25% from Heriot-Watt and 10% from Chromacity has been secured. A formal quotation is provided.Our original project proposal anticipated re-purposing a 3-4-um broadband laser purchased for an earlier STFC project in atmospheric spectroscopy, where the weak ambient concentrations (e.g. 1.8 ppm CH4) require wavelengths aligned to the strongest molecular cross-sections. While the IPS project could proceed with this laser, there are considerable benefits from replacing the previously earmarked laser with the proposed shorter-wavelength source, namely: a. Avoiding line saturation, due to the 100x lower cross-sections, thus improving measurement accuracy. b. Improving species distinguishability, due to lower spectral interference, again improving accuracy. c. Extending sensitivity to other important species, due to the presence of absorptions for H2S and CO2. d. The added commercial value introduced by these new features, including higher confidence in the concentration data, monitoring of safety critical and highly toxic H2S, and monitoring of reservoir quality through the CO2 information. e. The acceleration of lab research enabled by having a dedicated laser source for the project, rather than one shared with another grant.In summary, moving to this wavelength band would now allow ALL of the main components of natural gas to be analysed, with the exception of N2 (a non-infrared active gas presnt at <5% concentration).

原始项目摘要：准确监测石油储层中天然气的成分和流量对于开采公司量化其油气田的生产力至关重要。我们的新项目“天然气管道中的定量多物种碳氢化合物计量”。 ” (ST/T000635/1) 确定了将宽带、高分辨率中红外光谱集成到传统气体流量计中的第一个上市系统的机会。该项目得到工业合作伙伴 GM Flow Ltd.（干气计量领域的领导者）和 Chromacity Ltd.（可调谐激光器制造商）超过 40 万英镑的直接和实物捐助的支持，并寻求使用来自该项目方法利用高分辨率傅里叶变换激光光谱和创新的基线提取技术，利用现有的 3 - 4um 激光来量化生产储层中管道中携带的气态烷烃的丰度。算法，两者都源于早期的 STFC 项目 (ST/P00699X/1)，该项目最近产生了一项专利申请和期刊论文，宽带中红外光由扫描迈克尔逊干涉仪调制，充当高分辨率傅里叶变换光谱仪。然后，该光被光纤耦合并用于询问流量计计量单元中的气体采样，我们独特的算法用于提取多种气体的浓度。 Heriot-Watt 将管理该项目并负责与多物种气体光谱仪相关的硬件和软件开发，并将与以下三个合作伙伴进行合作：* GM Flow 为“干燥气体”市场制造流量计，并将设计一个集成模块，该模块独特地允许在流量计上进行原位气体成分采样和光谱分析。* Chromacity 是 HWU 的一家分拆制造近中红外飞秒激光器的公司，将领导该系统的系统集成激光、光谱仪、传输光纤、气体流量计和软件。*南安普顿大学将提供新型“空气引导”中红外光纤，补充市售实心光纤，并有可能提供卓越的远程传输特性。拟议资本摘要设备及其将提供的附加值：我们向 STFC 提出的请求是为 Chromacity Spark-OPO 的变体提供 65% 的资金，以提供整个地区的宽带覆盖2.4-3.1 微米区域。Heriot-Watt 提供 25% 的资金，Chromacity 提供 10% 的资金。我们最初的项目提案预计将购买 3-4 微米宽带激光器用于重新用途。大气光谱学领域的早期 STFC 项目，其中弱环境浓度（例如 1.8 ppm CH4）需要与最强分子横截面对齐的波长，而 IPS 项目可以。继续使用这种激光器，用所提出的较短波长源替换先前指定的激光器有相当大的好处，即： a. 由于横截面降低了 100 倍，从而提高了测量精度 b. ，由于较低的光谱干扰，由于 H2S 和 CO2 的吸收，再次提高了准确性。 d． e. 通过为该项目配备专用激光源（而不是与另一项拨款共享）来加速实验室研究。总之，转向该波长带现在可以分析天然气的所有主要成分，但 N2（一种浓度 <5% 的非红外活性气体）除外。