探矿工程-岩土钻掘工程
探礦工程-巖土鑽掘工程
탐광공정-암토찬굴공정
Exploration Engineering (Rock & Soil Drilling and Tunneling)
2015年
10期
11-16
,共6页
致密气藏%深层水平井%双聚胺基钻井液%抑制性%裂缝发育%大庆油田
緻密氣藏%深層水平井%雙聚胺基鑽井液%抑製性%裂縫髮育%大慶油田
치밀기장%심층수평정%쌍취알기찬정액%억제성%렬봉발육%대경유전
tight gas reservoir%deep horizontal well%double poly amine drilling fluid%inhibitory%fracture developing%Daqing oilfield
针对大庆油田深层致密气埋藏深，储层砾岩、火山岩裂缝发育，水敏性强，钻井过程中易发生漏失、垮塌、缩径及高温钻井液性能变差等复杂，且深层水平井钻进会带来摩阻、携岩和储层污染及使用油基钻井液存在成本高、后期环保压力大等难题，在分析总结前人研究成果及经验基础上，从致密气藏地质特征及深层水平井钻井难点出发，明确了钻井液技术对策，通过开展聚胺和聚醚多元醇“双聚”抑制、封堵防塌剂的研究，配合自主研制的新型高效随钻封堵材料，研发出一套适合于深层致密气藏水平井施工的双聚胺基钻井液技术。室内研究及现场应用表明，该钻井液具有较强的封堵防塌、井眼清洁和润滑防卡能力，抗温达180℃以上，有效地解决了深层水平井漏失、垮塌、携屑、润滑问题和储层保护问题，保证了深层水平井的顺利施工，创造了大庆油田深层水平井钻井周期最短（109 d），井深最深（5048 m），水平段最长（969.22 m），井底温度最高（180℃）等几项新纪录，完全满足了徐家围子地区深层致密气藏的钻探需求，为深层水平井安全、快速、高效钻井提供了技术保障。
針對大慶油田深層緻密氣埋藏深，儲層礫巖、火山巖裂縫髮育，水敏性彊，鑽井過程中易髮生漏失、垮塌、縮徑及高溫鑽井液性能變差等複雜，且深層水平井鑽進會帶來摩阻、攜巖和儲層汙染及使用油基鑽井液存在成本高、後期環保壓力大等難題，在分析總結前人研究成果及經驗基礎上，從緻密氣藏地質特徵及深層水平井鑽井難點齣髮，明確瞭鑽井液技術對策，通過開展聚胺和聚醚多元醇“雙聚”抑製、封堵防塌劑的研究，配閤自主研製的新型高效隨鑽封堵材料，研髮齣一套適閤于深層緻密氣藏水平井施工的雙聚胺基鑽井液技術。室內研究及現場應用錶明，該鑽井液具有較彊的封堵防塌、井眼清潔和潤滑防卡能力，抗溫達180℃以上，有效地解決瞭深層水平井漏失、垮塌、攜屑、潤滑問題和儲層保護問題，保證瞭深層水平井的順利施工，創造瞭大慶油田深層水平井鑽井週期最短（109 d），井深最深（5048 m），水平段最長（969.22 m），井底溫度最高（180℃）等幾項新紀錄，完全滿足瞭徐傢圍子地區深層緻密氣藏的鑽探需求，為深層水平井安全、快速、高效鑽井提供瞭技術保障。
침대대경유전심층치밀기매장심，저층력암、화산암렬봉발육，수민성강，찬정과정중역발생루실、과탑、축경급고온찬정액성능변차등복잡，차심층수평정찬진회대래마조、휴암화저층오염급사용유기찬정액존재성본고、후기배보압력대등난제，재분석총결전인연구성과급경험기출상，종치밀기장지질특정급심층수평정찬정난점출발，명학료찬정액기술대책，통과개전취알화취미다원순“쌍취”억제、봉도방탑제적연구，배합자주연제적신형고효수찬봉도재료，연발출일투괄합우심층치밀기장수평정시공적쌍취알기찬정액기술。실내연구급현장응용표명，해찬정액구유교강적봉도방탑、정안청길화윤활방잡능력，항온체180℃이상，유효지해결료심층수평정루실、과탑、휴설、윤활문제화저층보호문제，보증료심층수평정적순리시공，창조료대경유전심층수평정찬정주기최단（109 d），정심최심（5048 m），수평단최장（969.22 m），정저온도최고（180℃）등궤항신기록，완전만족료서가위자지구심층치밀기장적찬탐수구，위심층수평정안전、쾌속、고효찬정제공료기술보장。
According to the complex geological conditions of deep tight gas reservoir in Daqing oilfield, fracture developing in conglomerate and volcano rocks in the reservoir and strong water sensitivity;leakage, collapse, diameter shrinkage and drilling fluid property degradation while drilling at high temperature; friction, cuttings carrying and reservoir pollution in deep horizontal well drilling, as well as the high cost and late environmental protection pressure caused by the use of oil-based drilling fluid, on the basis of the analysis and summary of the previous experience, starting from the geological char-acteristics in tight gas reservoir and difficult points of deep horizontal well drilling, the technical measures for drilling fluid were clear.Though the study on inhibition of polyamine&polyether polyol and anti-sloughing plugging agent and working with new efficient independent developed drilling sealing material, a set of double poly amine drilling fluid technology was developed, which is suitable for horizontal well construction in deep tight gas reservoir.The laboratory studies and field ap-plication show that this drilling fluid system has ability of strong sealing & anti-collapse, hole cleaning, lubricating and sticking prevention, it can be used at the temperature more than 180℃.A series of complex problems and the reservoir protection in deep horizontal well drilling were effectively solved.New records were created for deep horizontal well drilling in Daqing oilfield, the shortest drilling cycle(109 d),the deepest depth(5048 m),the longest horizontal section(969.22 m) and the highest working temperature (180 ℃) at the hole bottom, which completely satisfy the requirements of drilling in deep tight gas reservoir in Xujiaweizi area and provide the technical support for safe, fast and efficient drilling in the deep horizontal well.
