哈拉哈塘地区奥陶系碳酸盐岩保护储层钻井液技术
|
摘要
哈拉哈塘地区奥陶系碳酸盐岩储层缝洞发育,漏失污染及其诱发的储层损害严重制约了油气藏的高效勘探开发。从储层特征和储层损害机理分析出发,明确了储层损害的主控因素,提出了碳酸盐岩储层保护基本思路。针对不同裂缝宽度的碳酸盐岩储层进行了保护储层钻井液技术研究,结果发现:在钻井液中加入随钻矿物纤维可变形粒子,可显著提高裂缝宽度为50μm、75μm储层渗透率恢复值,但对于宽度为105μm的裂缝,尚需加入大颗粒堵漏材料才能在近井壁带形成致密封堵层,此结果对设计保护配方和制定保护措施具有重大指导意义。室内采用随钻防漏堵漏技术和屏蔽暂堵技术相结合方法优化储层保护配方,使钻井液渗透率恢复值得到了较大程度提高。现场应用表明,该配方性能优良,渗透率恢复值能达到67%以上,对储层的保护达到了预期效果。
The fractures of Ordovician carbonate reservoirs in Halahatang area develops highly, and serious pollution by leakage and formation damage restrict reservoir exploration and developments. Aimed at these problems, reservoir characteristics and reservoir damage mechanism were analyzed, main controlling factors were made clear, and basic thinking of carbonate reservoir protection were described. Protections of carbonate reservoirs with different fractures were studied, and results showed the permeability recovery of fractures with50 μm and 75 μm were high improved after adding the fiber deformable particles, but for the fractures with 105 μm, large particle plugging materials were necessary. This result has important guiding significance for designing formulas and developing protective measures.Lost circulation prevention and plugging while drilling and shielding temporary plugging technique were combinated to optimize the protection formula. The field application showed that the optimized formula had excellent performance,the permeability recovery got 67 %above, and achieved the expected protection effect.
The fractures of Ordovician carbonate reservoirs in Halahatang area develops highly, and serious pollution by leakage and formation damage restrict reservoir exploration and developments. Aimed at these problems, reservoir characteristics and reservoir damage mechanism were analyzed, main controlling factors were made clear, and basic thinking of carbonate reservoir protection were described. Protections of carbonate reservoirs with different fractures were studied, and results showed the permeability recovery of fractures with50 μm and 75 μm were high improved after adding the fiber deformable particles, but for the fractures with 105 μm, large particle plugging materials were necessary. This result has important guiding significance for designing formulas and developing protective measures.Lost circulation prevention and plugging while drilling and shielding temporary plugging technique were combinated to optimize the protection formula. The field application showed that the optimized formula had excellent performance,the permeability recovery got 67 %above, and achieved the expected protection effect.
引文
[1]孙崇浩,朱光有,郑多民,等.塔里木盆地哈拉哈塘地区超深碳酸盐岩缝洞型储集层特征与控制因素[J].矿物岩石地球化学通报,2016,35(5):1028-1036.
[2]马奎,胡素云,刘刚,等.塔北哈拉哈塘油田奥陶系岩溶储层类型与特征及控制因素[J].海洋地质与第四纪地质,2016,36(4):119-128.
[3]李贵宾,尤军,王福合,等.哈拉哈塘地区钻井难点分析与提速关键技术[J].石油钻采工艺,2012,34(6):18-22.
[4]何良泉,蒋红梅,王延民,等.裂缝-溶洞型碳酸盐岩储层保护[J].重庆科技学院学报,2008,10(4):19-21.
[5]杨兰田,耿云鹏,牛晓,等.保护缝洞性碳酸盐岩储层的钻井液技术[J].钻井液与完井液,2012,29(6):17-20.
[6]陈利新,程汉列,高春海,等.哈拉哈塘油田碳酸盐岩储层试井特征分析[J].油气井测试,2015,24(2):16-18.
[7]徐同台,卢淑琴,何瑞兵.钻井液用封堵剂的评价方法及影响因素[J].钻井液与完井液,2009,26(2):60-62.
[8]程智,仇盛南,曹靖瑜,等.长裸眼随钻防漏封堵技术在跃满3-3井的应用[J].石油钻采工艺,2016,38(5):612-616.
[9]闫丰明,康毅力,孙凯,等.裂缝-孔洞型碳酸盐岩储层暂堵性堵漏机理研究[J].石油钻探技术,2011,39(2):81-85.
[10]刘大伟,康毅力,雷鸣,等.保护碳酸盐岩储层屏蔽暂堵技术研究进展[J].钻井液与完井液,2008,25(5):57-60.
[11]黄立新,罗平亚.裂缝性储集层的屏蔽式暂堵技术[J].江汉石油学院学报,1993,15(3):53-56.
[12]蒋海军,鄢捷年.架桥粒子粒径与裂缝有效裂缝宽度匹配关系的试验研究[J].钻井液与完井液,2000,17(4):1-3.
[13]杨同玉,张福仁,孙守港.屏蔽暂堵技术中暂堵剂粒径的优化选择[J].断块油气田,1996,3(6):50-53.
[14]魏裕森,韦红术,张俊斌,等.碳酸钙粒径配比对储层保护效果的影响研究[J].长江大学学报(自然科学版),2015,12(14):51-54.
[15] E M.斯麦霍夫.裂缝性油气储集层勘探的基本理论与方法[M].陈定保,译.北京:石油工业出版社,1985.
[16]申本科,薛大伟,赵君怡,等.碳酸盐岩储层常规测井评价方法[J].地球物理进展,2014,29(1):261-270.
[17]李松,康毅力,李大奇,等.缝洞型储层井壁裂缝宽度变化ANSYS模拟研究[J].天然气地球科学,2011,22(2):340-346.
[2]马奎,胡素云,刘刚,等.塔北哈拉哈塘油田奥陶系岩溶储层类型与特征及控制因素[J].海洋地质与第四纪地质,2016,36(4):119-128.
[3]李贵宾,尤军,王福合,等.哈拉哈塘地区钻井难点分析与提速关键技术[J].石油钻采工艺,2012,34(6):18-22.
[4]何良泉,蒋红梅,王延民,等.裂缝-溶洞型碳酸盐岩储层保护[J].重庆科技学院学报,2008,10(4):19-21.
[5]杨兰田,耿云鹏,牛晓,等.保护缝洞性碳酸盐岩储层的钻井液技术[J].钻井液与完井液,2012,29(6):17-20.
[6]陈利新,程汉列,高春海,等.哈拉哈塘油田碳酸盐岩储层试井特征分析[J].油气井测试,2015,24(2):16-18.
[7]徐同台,卢淑琴,何瑞兵.钻井液用封堵剂的评价方法及影响因素[J].钻井液与完井液,2009,26(2):60-62.
[8]程智,仇盛南,曹靖瑜,等.长裸眼随钻防漏封堵技术在跃满3-3井的应用[J].石油钻采工艺,2016,38(5):612-616.
[9]闫丰明,康毅力,孙凯,等.裂缝-孔洞型碳酸盐岩储层暂堵性堵漏机理研究[J].石油钻探技术,2011,39(2):81-85.
[10]刘大伟,康毅力,雷鸣,等.保护碳酸盐岩储层屏蔽暂堵技术研究进展[J].钻井液与完井液,2008,25(5):57-60.
[11]黄立新,罗平亚.裂缝性储集层的屏蔽式暂堵技术[J].江汉石油学院学报,1993,15(3):53-56.
[12]蒋海军,鄢捷年.架桥粒子粒径与裂缝有效裂缝宽度匹配关系的试验研究[J].钻井液与完井液,2000,17(4):1-3.
[13]杨同玉,张福仁,孙守港.屏蔽暂堵技术中暂堵剂粒径的优化选择[J].断块油气田,1996,3(6):50-53.
[14]魏裕森,韦红术,张俊斌,等.碳酸钙粒径配比对储层保护效果的影响研究[J].长江大学学报(自然科学版),2015,12(14):51-54.
[15] E M.斯麦霍夫.裂缝性油气储集层勘探的基本理论与方法[M].陈定保,译.北京:石油工业出版社,1985.
[16]申本科,薛大伟,赵君怡,等.碳酸盐岩储层常规测井评价方法[J].地球物理进展,2014,29(1):261-270.
[17]李松,康毅力,李大奇,等.缝洞型储层井壁裂缝宽度变化ANSYS模拟研究[J].天然气地球科学,2011,22(2):340-346.