第33卷第5期 2016年9月
钻井液与完井液
DRILLINGFLUID&COMPLETIONFLUID
doi: 10.3696/j.issn.1001-5620.2016.05.016
Vol.33 No. 5 Sept.2016
精细动态控压固井技术在顺南区块的应用
郭继刚
（中石化中原石油工程有限公司固井公司，河南濮阳457001）
郭继则，精细动态控压固并技术在顺南区块的应用[].钻井液与完井液，2016，33（5)：76-79.
摘要塔中顺南区块存在油气活跃、后效严重、压力窗口窄、井深、井底温度高、地层承压能力低等固井技术难点。为了解决顺南区块固井作业存在的间题，开展了精细动态控压围井技术现场实践，顺利完成了该区固井作业。该技术通过有效控制井口、井底压力，防止并漏、溢流的发生，在保证施工安全的同时提高了固井质量。目前已在顺南6并、顺南7 并成功应用，效果显著。该技术对压力敏感性地层固井有推广应用前景。
关键词固井；精细控压；井漏；溢流；固井质量：；顺南区块
中图分类号：TE256
文献标识码：A
文章编号：1001-5620（2016）05-0076-04
Application of Precise Dynamic Pressure Control Well Cementing Technology in Block Shunnan
GUO Jigang
(CementingBranch ofZhongyuanPetroleumEngineering Ld.,Sinopec,Puyang,Henan457001)
Abstract Well cementing operations in Block Shunnan has been encountering technical difficulties such as active oil and gas, severe gas cut,narrowdensity window,dep well,highbottom holetemperature,andlow pressure bearing etc.Todeal withthesedificulties,a precise dynamic pressure control well cementing technology was applied in Shunnan, and well cementing was successfully performed. In applying this technology, the pressures at the wellhead and the bottom were carefully controlled to prevent lost circulation and well kick from occurring. The well cementing job was safely performed while the job quality was enhanced. This technology has been successfully applied in cementing the well Shunnan-6 and the well Shunnan-7. This technology is of great importance in cementing wells penetrating pressure-sensitive formations, and is worth applying widely
Key words Precise pressure control well cementing; Lost circulation; Well kick; Job quality of well cementing; Application prospect,; Block Shunnan
塔中顺南区块是中石化西北油田分公司的主要油气勘探区块，该区奥陶系碳酸盐岩储层分为上奥陶统和中下奥陶统。上奥陶统储集空间主要为低孔低渗基质、次生溶蚀孔洞和构造缝。中下奥陶统-间房、鹰山组裂缝、洞穴十分发育，缝洞一体1-2]。本区钻遇碳酸盐岩储层高压气层时，气侵非常严重，后效持续时间长，全烃值居高不下，钻井液进出口密度差较大，若采用提高钻井液密度进行压稳，又会发生漏失。近年来，顺南5、顺南4-1等井采用常规尾管固井方法固井，存在压漏地层或压不住油气上审的风险，导致固井质量较差。因此，针对顺
南区块井深、井底温度高、压力窗口极窄、压稳和防漏难以兼顾的固井难题，采用精细控压固井技术在该区开展了现场固井实践，通过准确计算环空循环摩阻，提高顶替效率，进一步提高了尾管固井质量。
1精细动态控压固并原理及设备
精细动态控压固井技术原理 1.1
精细动态控压固井技术是在精细控压钻井技术的基础上提出的，主要在固井前循环、注固井
基金项目：中国石油化工集团公司项目“中原油田深层水平井关键技术研究”（JP12005)。
作者简介：郭继刚，工程师，1975年生，毕业于中国石油大学（北京)石油工程专业，现在主要从事围井工艺技术相关研究。
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