CAJ | 학술논문

苏里格气田属典型低压、低渗、低产的“三低”气田,总体上看储层物性较差,常规水平井开发效率较低,中低产井占绝大多数.为了提高苏里格气田水平井单井产量,提高开发效率,降低综合开发成本,针对苏里格气田多套气藏发育的地质特点,开展了分支水平井钻完井技术研究及现场试验.从施工难点、井身结构、侧钻技术、完井方式等方面介绍了苏里格气田首口双分支水平井——T7-14-18H井的钻完井关键技术及现场实施情况.该井成功实现了水平井段裸眼完井+分段压裂增产改造,初步探索出了一套符合苏里格气田开发需要的分支水平井钻完井配套技术,为低渗透油气田经济高效开发探索出了一条新的技术途径.
소리격기전속전형저압、저삼、저산적“삼저”기전,총체상간저층물성교차,상규수평정개발효솔교저,중저산정점절대다수.위료제고소리격기전수평정단정산량,제고개발효솔,강저종합개발성본,침대소리격기전다투기장발육적지질특점,개전료분지수평정찬완정기술연구급현장시험.종시공난점、정신결구、측찬기술、완정방식등방면개소료소리격기전수구쌍분지수평정——T7-14-18H정적찬완정관건기술급현장실시정황.해정성공실현료수평정단라안완정+분단압렬증산개조,초보탐색출료일투부합소리격기전개발수요적분지수평정찬완정배투기술,위저삼투유기전경제고효개발탐색출료일조신적기술도경.
@@@@Sulige?gas?field?is?a?typical?low?permeability,?low?production?&?low?pressure?gas?field,?with?relatively?poor?formation?property,?and?low?efficiency?of?exploration?&?development?for?conventional?horizontal?wells,?and?low-to-moderate?production?wells?take absolutely majority proportion. Considering the formation characteristics of developed multi pay zone, the drilling&completion technology?researches?over?branch?horizontal?wells?and?filed?applications?are?conducted,?to?further?promote?the?individual?production,?to?increase?exploration?efficiency,?and?to?reduce?integrative?exploration?cost.?In?the?paper,?from?the?viewpoint?of?operation?difficulties,?wellbore structure, sidetracking skills, completion method, etc., some key drilling&completion technologies and applications are in-troduced?on?Well?T7-14-18H,?which?is?the?first?double-branch?horizontal?well?in?Sulige?Gas?Field.?It?is?achieved?that?completion?with?openhole horizontal section+sectional fracturing stimulation techniques successfully. A set of branch horizontal drilling&completion technology?is?preliminarily?formed?to?fulfill?the?exploration?requirement?of?Sulige?Gas?Field,?which?provide?a?new?technology?direction?and?measure?to?explore?and?develop?low?permeability?oil?&?gas?fields.