通用电气(GE)公司基础设施集团水处理与工艺过程处理公司是一家世界领先的水净化和流体处理公司该公司新近推出一项SWSR纳滤膜技术,可有效除去海上油气生产所注海水中的硫酸盐成分,从而可减少注入井井筒腐蚀结垢现象的发生。
纳滤膜,孔径一般1~2nm,是允许溶剂分子或某些低分子量溶质或低价离子透过的一种功能性的半透膜。它是一种特殊而又很有前途的分离膜品种,它因能截留物质的大小约为纳米而得名,它截留有机物的分子量大约为150~500左右,截留溶解性盐的能力为2~98%之间,对单价阴离子盐溶液的脱盐低于高价阴离子盐溶液。被用于去除地表水的有机物和色度,脱除地下水的硬度,部分去除溶解性盐,浓缩果汁以及分离药品中的有用物质等。
通用电气公司于2015年5月4日对外推出了一项服务于上游油气市场的新型水处理技术。该公司新型的去除海水中硫酸盐(SWSR)的纳滤膜基本上可将用于海上油田生产所用海水中的全部硫酸盐成分都过滤掉。
- 该技术研发目的主要是为上游油气工业生产持续稳定地提供低硫酸盐浓度的海水;
- 新型纳滤膜具有抗污染性能,可减少井筒腐蚀结垢现象发生。
GE的SWSR纳滤膜通过过滤掉海水中的硫酸盐成分可以大幅度降低注入井井筒腐蚀结垢现象发生的概率(井筒腐蚀结垢会造成井眼堵塞并会降低原油采收率)。新型滤膜元件具有独特的三层复合膜结构且表面光滑,因而具备超常的抗污染性能。石油圈原创www.oilsns.com
SWSR纳滤膜系列是通用电气公司DK系列纳滤膜的升级版,对二价和多价阴离子截留,为氯化钠的通过提供了高传输通道,从而使渗透压降至最低。对于海水中的悬浮颗粒,例如细菌、致热源或胶质物,它会构成一个物理屏障。此外,该种新型纳滤膜可有效降低注入井中硫酸锶或硫酸钡结垢概率,并通过过滤硫酸盐来弱化井液酸性。
通用电气公司基础设施集团水处理与工艺过程处理公司的总经理Yuvbir Singh说道:“为服务上游油气产业,我们基于30年的纳滤膜研制经验,最终研发出这一创新型纳滤膜系列。在海上钻井平台,石油生产商通过向注水井中大量注水来驱替原油从生产井中产出。如果注入水的水质较差,则会发生井筒腐蚀结垢,导致井眼堵塞等生产事故。GE的SWSR纳滤膜技术可有效过滤硫酸盐成分,并具备超常的抗污染性能。”
新型的SWSR纳滤膜还可与GE现有的反渗透膜联合应用,可为低盐度水驱、聚合物驱或其他提高采收率技术提供所需水源。石油圈原创www.oilsns.com
通用电气公司的DK系列纳滤膜已经在诸多最具挑战性的项目中得以应用,时间跨度已经超过30年之久。SWSR系列纳滤膜元件则是DK系列膜进一步技术升级的产物,专为油气行业研制,用于除去海水中的硫酸盐成分。它截留分子量为300道尔顿,对海水中任何的悬浮物,包括各种粒子、硅胶或细菌等,它会构成一个绝对的物理屏障。
SWSR纳滤膜特性石油圈原创www.oilsns.com
- 可有效降低注入井井筒内硫酸锶或硫酸钡结垢生成;
- 通过过滤掉注入海水中的硫酸盐成分,可有效弱化井液酸性;
- 非常适用于海水过滤且具备卓越的流体动力学性能,大大了延长纳滤膜的使用寿命;
- 独特且久经考验的三层复合膜结构可最大限度地减弱其表面粗糙度和粘附性;
- 新型纳滤膜面积最大可达440平方英尺,可显著缩短作业时间;
- 具备超强的硬度和硫酸盐过滤属性;
- 与当前行业内使用的清洁剂具有很好地兼容性;
- 创新型的隔圈设计与三层复合膜结构的纳滤膜结合应用,可显著增强系统的抗污染性能。
如需获取关于该技术的更多资料,请联系石油圈技术运营 Demons,QQ:2582825239。
来自/GE 译者/姚园 编辑/Lemon
GE today announced a new water treatment technology for the upstream oil and gas market. GE’s new seawater sulfate removal (SWSR) nanofiltration membrane eliminates almost all sulfate from injection water in offshore oil production.
GE’s SWSR membrane removes sulfate to drastically reduce scale and corrosion in the injection well, which can reduce oil recovery and plug the well. It also has exceptional fouling resistance due to its three-layer membrane design and smooth surface.
The new SWSR series is an advancement of GE’s DK series nanofiltration membrane and provides a high transmission of sodium chloride into the permeate water to minimize operating pressures. It offers a physical barrier for any suspended particles including bacteria, pyrogens and colloids. Additionally, the new membrane will help prevent strontium and barium sulfate scale in injection wells and will better mitigate well souring by reducing sulfate.
“We put our 30 years of experience in nanofiltration membrane manufacturing to use in creating our latest innovation for the upstream oil and gas industry. On oilrigs, oil producers use injection water to flood the field and force oil to the producing wells, but if the water is of poor quality, it causes scale and corrosion that plugs and sours the field. GE’s new seawater sulfate removal membranes provide excellent sulfate removal and have superior fouling resistance,” said Yuvbir Singh, general manager, engineered systems—water and process technologies for GE Power & Water.
The new SWSR membrane also can be used in conjunction with GE’s existing reverse osmosis membranes in order to provide water for low salinity flooding, polymer flooding and other forms of enhanced oil recovery.
SWSR – SeaWater Sulfate Reducing Membrane
Exclusively for the Oil and Gas industry, the SWSR is a Nanofiltration membrane element portfolio developed for seawater sulfate removal. It is built on GE’s robust DK membrane platform, which has been used for over 30 years in some of the most challenging applications. The SWSR NF membrane features a 300 Dalton Molecular Weight cut-off and is an absolute barrier for any suspended matter including particles, colloidal silica, and bacterial matters.
SWSR Nanofiltration Membrane Features:
- Prevents strontium and barium sulfate scale in injection wells
- Better well souring mitigation by reducing the incoming sulfate
- Optimized for use in seawater while providing superior hydrodynamics, which result in longer membrane life
- Unique and long-proven GE 3-layer membrane structure that minimizes surface roughness and adherence
- Available in a 440 sq. ft. version to maximize membrane area for new systems while minimizing footprint
- Superior hardness and sulfate removal properties
- Chemical compatibility with cleaners currently used in the industry
- Innovative spacer design combined with 3-layer membrane allows improved fouling resistance when retrofitting existing installations
未经允许,不得转载本站任何文章: