
通用電氣(GE)公司基礎設施集團水處理與工藝過程處理公司是一家世界領先的水凈化和流體處理公司該公司新近推出一項SWSR納濾膜技術,可有效除去海上油氣生產所注海水中的硫酸鹽成分,從而可減少注入井井筒腐蝕結垢現象的發生。
納濾膜,孔徑一般1~2nm,是允許溶劑分子或某些低分子量溶質或低價離子透過的一種功能性的半透膜。它是一種特殊而又很有前途的分離膜品種,它因能截留物質的大小約為納米而得名,它截留有機物的分子量大約為150~500左右,截留溶解性鹽的能力為2~98%之間,對單價陰離子鹽溶液的脫鹽低于高價陰離子鹽溶液。被用于去除地表水的有機物和色度,脫除地下水的硬度,部分去除溶解性鹽,濃縮果汁以及分離藥品中的有用物質等。
通用電氣公司于2015年5月4日對外推出了一項服務于上游油氣市場的新型水處理技術。該公司新型的去除海水中硫酸鹽(SWSR)的納濾膜基本上可將用于海上油田生產所用海水中的全部硫酸鹽成分都過濾掉。
- 該技術研發目的主要是為上游油氣工業生產持續穩定地提供低硫酸鹽濃度的海水;
- 新型納濾膜具有抗污染性能,可減少井筒腐蝕結垢現象發生。
GE的SWSR納濾膜通過過濾掉海水中的硫酸鹽成分可以大幅度降低注入井井筒腐蝕結垢現象發生的概率(井筒腐蝕結垢會造成井眼堵塞并會降低原油采收率)。新型濾膜元件具有獨特的三層復合膜結構且表面光滑,因而具備超常的抗污染性能。石油圈原創www.h29736.cn
SWSR納濾膜系列是通用電氣公司DK系列納濾膜的升級版,對二價和多價陰離子截留,為氯化鈉的通過提供了高傳輸通道,從而使滲透壓降至最低。對于海水中的懸浮顆粒,例如細菌、致熱源或膠質物,它會構成一個物理屏障。此外,該種新型納濾膜可有效降低注入井中硫酸鍶或硫酸鋇結垢概率,并通過過濾硫酸鹽來弱化井液酸性。
通用電氣公司基礎設施集團水處理與工藝過程處理公司的總經理Yuvbir Singh說道:“為服務上游油氣產業,我們基于30年的納濾膜研制經驗,最終研發出這一創新型納濾膜系列。在海上鉆井平臺,石油生產商通過向注水井中大量注水來驅替原油從生產井中產出。如果注入水的水質較差,則會發生井筒腐蝕結垢,導致井眼堵塞等生產事故。GE的SWSR納濾膜技術可有效過濾硫酸鹽成分,并具備超常的抗污染性能?!?/span>
新型的SWSR納濾膜還可與GE現有的反滲透膜聯合應用,可為低鹽度水驅、聚合物驅或其他提高采收率技術提供所需水源。石油圈原創www.h29736.cn
通用電氣公司的DK系列納濾膜已經在諸多最具挑戰性的項目中得以應用,時間跨度已經超過30年之久。SWSR系列納濾膜元件則是DK系列膜進一步技術升級的產物,專為油氣行業研制,用于除去海水中的硫酸鹽成分。它截留分子量為300道爾頓,對海水中任何的懸浮物,包括各種粒子、硅膠或細菌等,它會構成一個絕對的物理屏障。
SWSR納濾膜特性石油圈原創www.h29736.cn
- 可有效降低注入井井筒內硫酸鍶或硫酸鋇結垢生成;
- 通過過濾掉注入海水中的硫酸鹽成分,可有效弱化井液酸性;
- 非常適用于海水過濾且具備卓越的流體動力學性能,大大了延長納濾膜的使用壽命;
- 獨特且久經考驗的三層復合膜結構可最大限度地減弱其表面粗糙度和粘附性;
- 新型納濾膜面積最大可達440平方英尺,可顯著縮短作業時間;
- 具備超強的硬度和硫酸鹽過濾屬性;
- 與當前行業內使用的清潔劑具有很好地兼容性;
- 創新型的隔圈設計與三層復合膜結構的納濾膜結合應用,可顯著增強系統的抗污染性能。
如需獲取關于該技術的更多資料,請聯系石油圈技術運營 Demons,QQ:2582825239。
來自/GE ? ? 譯者/姚園 ? ? ?編輯/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
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