CAJ | 학술논문

辽河油田曙一区杜84块超稠油油藏原油黏度大,采用直井蒸汽吞吐开采,蒸汽波及半径小,周期产油量低,日产油水平低,产量递减快,井间剩余油得不到有效动用。通过开展超稠油水平井热采技术研究,对水平井部署方式、吞吐注采参数及提高采收率的SAGD技术进行了分析论证,明确了水平井开采技术能够缓解油田开发层间、层内和平面上的三大矛盾,是一项非常有潜力、有优势的新技术。水平井吞吐及SAGD技术的应用,使该区块成功地实现了二次开发,油藏开发效果较用直井开发有较大改善。水平井技术已成为提高区块采收率的有效手段。
료하유전서일구두84괴초주유유장원유점도대,채용직정증기탄토개채,증기파급반경소,주기산유량저,일산유수평저,산량체감쾌,정간잉여유득불도유효동용。통과개전초주유수평정열채기술연구,대수평정부서방식、탄토주채삼수급제고채수솔적SAGD기술진행료분석론증,명학료수평정개채기술능구완해유전개발층간、층내화평면상적삼대모순,시일항비상유잠력、유우세적신기술。수평정탄토급SAGD기술적응용,사해구괴성공지실현료이차개발,유장개발효과교용직정개발유교대개선。수평정기술이성위제고구괴채수솔적유효수단。
Du 84 block is a super-heavy oil reservoir in the Shu 1 area, Liaohe Oilfield. When developed by the cyclic steam stimulation in vertical well patterns, the smaller drainage radius, lower oil production per period, lower oil rate per day, higher production decline rate and the inefficient displacement of the interwell remaining oil problems have been encountered. According to the study on the thermal recovery technology for horizontal well of super-heave oil reservoir, the deployment way of the horizontal wells, steam stimulation parameters and enhancing oil recovery with SAGD technology were analyzed. The result shows that the horizontal well development technology is a potential and advantageous new technology to relieve the contradictions between interlayer, endostratic and plane. Horizontal well steam stimulation and SAGD technology have more effectiveness than the vertical well, so the use of horizontal well is coming to be an effective method for enhancing oil recovery.