摘要
用西南石油学院研制的新型水溶性两性缔合聚合物配制了两性缔合聚合物／ 有机铬冻胶调堵剂，全面考察了成胶体系和形成的冻胶作为调堵剂的性能，探讨了该冻胶的调剖堵水机理。本研究表明，该新型调堵剂具有成胶时间可调、耐盐性极好、抗压强度大、稳定性好等特点，可望在高矿化度和裂缝性复杂油藏条件下使用。
A new chromium gelling fluid for profile modification and water shutoff is formulated on the base of a water soluble amphoteric hydrophobically associating polymer (sample 11.18.11) with an organic chromium salt and a monovalent organic salt as crosslinker and formalin as gel stabilizer. The gelation time of gelling system and the gel strength are investigated as influenced by polymer and crosslinker concentration, NaCl amount added(up to 25%), pH value and temperature. The plygging efficiency of this fluid is determined in core experiments. A comparison is made for this fluid with other, commonly used systems. It is shown that this fluid is characterized by excellent salt tolerency (up to 25% NaCl), very high gel strength and stability, wide working temperature range(30-120℃) and comparatively low cost.
出处
《油田化学》
CAS
CSCD
北大核心
1999年第3期214-216,227,共4页
Oilfield Chemistry
关键词
铬冻胶
调剖堵水剂
油藏
高聚物
缔合两性高聚物
Hydrophobically Associating Polymer
Amphoteric Polymer
Polymer/Chromium Aqueous Gelling System
Profile Modification/Water Shutoff Agent
Performance Properties
High Salinity Reservoirs
