无土相水基钻井液超分子增黏提切剂的研制  

Research and Development of Supramolecular Rheological Modifier Used for Clay-Free Water Base Drilling Fluid

作　　者：张县民[1] 蒋官澄[1] 付建国 程琳 董腾飞[1] Zhang Xianmin Jiang Guancheng Fu Jianguo Cheng Lin Dong Tengfeil(China University of Petroleum （Beijing） , Beijing 102249, China CNPC Xibu Drilling Engineering Company Limited, Fukang , Xinjiang 831511, China CNPC Bohai Drilling Engineering Company Limited, Renqiu, Hebei 062550, China)

机构地区：[1]中国石油大学(北京),北京102249 [2]中国石油西部钻探工程有限公司,新疆阜康831511 [3]中国石油渤海钻探工程有限公司,河北任丘062550

出　　处：《特种油气藏》2017年第2期160-164,共5页Special Oil & Gas Reservoirs

基　　金：国家自然科学基金"页岩气钻探中的井壁稳定及高效钻完井基础研究"(U1262201);"十三五"国家科技重大专项"非常规油气钻井关键技术与装备--工厂化钻井关键技术研究及应用--页岩气水平井水基钻井液研究与实验"(2016ZX05022-001-001-001)

摘　　要：增黏提切剂是控制无土相水基钻井液流变性能的关键处理剂,通过将超分子网状结构引入聚合物中,利用胶束聚合物合成一种超分子增黏提切剂CZN,并评价其性能。结果表明:CZN具有明显的超分子网状结构,有较好的增黏提切性和剪切稀释性,表观黏度、动塑比要远高于同浓度的PAM;具有较好的抗温性和实用性。以CZN为增黏提切剂配置了无固相聚膜钻井液体系,现场应用表明,该钻井液可有效携带井底岩屑,保证顺利钻进。该技术可为提高复杂地层钻井效率提供技术支撑。Rheological modifier is the key treatment chemical controlling rheological property of clay-flee water base drilling fluid. In this paper, a kind of supramolecular rheological modifier CZN was synthesized from micelle poly- mers by introducing snpramolecular network into polymers. Then, its properties were evaluated. It is indicated that CZN has obvious supramolecular networks, presenting good viscosifying and shear strength improving property, shear thinning property, temperature resistance and practicability. Its apparent viscosity and dynamic plasticity are much higher than those of PAM with the same concentration. Clay-free water base drilling fluid system was pre- pared with CZN as the rheological modifier and it was applied in field. It is shown that this drilling fluid can carry＂ the bottom hole cuttings effectively, so the drilling operation is carried out smoothly. This technology provides the technical support for improving the drilling efficiency in complex strata.

关 键 词：无土相水基钻井液 超分子网状结构 增黏提切剂 剪切稀释性 抗温性 

分 类 号：TE254[石油与天然气工程—油气井工程]